WO2022054126A1 - Air-conditioning system - Google Patents

Air-conditioning system Download PDF

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Publication number
WO2022054126A1
WO2022054126A1 PCT/JP2020/033926 JP2020033926W WO2022054126A1 WO 2022054126 A1 WO2022054126 A1 WO 2022054126A1 JP 2020033926 W JP2020033926 W JP 2020033926W WO 2022054126 A1 WO2022054126 A1 WO 2022054126A1
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WO
WIPO (PCT)
Prior art keywords
temperature
temperature difference
indoor
floor
air
Prior art date
Application number
PCT/JP2020/033926
Other languages
French (fr)
Japanese (ja)
Inventor
春実 加藤
怜司 森岡
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to CN202080103735.0A priority Critical patent/CN116018480A/en
Priority to EP20953194.6A priority patent/EP4212787A4/en
Priority to JP2022548266A priority patent/JP7415023B2/en
Priority to PCT/JP2020/033926 priority patent/WO2022054126A1/en
Priority to US18/003,181 priority patent/US20230243540A1/en
Publication of WO2022054126A1 publication Critical patent/WO2022054126A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0057—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in or on a wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature

Definitions

  • This disclosure relates to an air conditioning system.
  • Patent Document 1 describes an air conditioner that efficiently air-conditions a room by detecting the height of the ceiling and the presence of lighting and lintels attached to the ceiling and controlling the airflow so as to avoid the lighting and lintels. ..
  • the object of the present disclosure is to reliably detect the existence of a high ceiling in a room provided with a high ceiling in which a part of the ceiling is raised, and further, a temperature difference occurs between the high ceiling space and the space where people live.
  • the air conditioning system includes an indoor unit, a distance measuring means for measuring the distance from the indoor unit to the ceiling and the distance from the indoor unit to the floor, and the distance from the indoor unit to the ceiling measured by the distance measuring means. Based on this, when there are multiple ceilings with different heights in the room, a high ceiling detecting means that detects the high ceiling space at a position higher than the lowest ceiling among the multiple ceilings, and an indoor unit measured by the distance measuring means. Based on the distance from the floor to the floor and the distance from the indoor unit to the wall, the floor detecting means for detecting the floor, the temperature measuring means for measuring the surface temperature of the high ceiling space and the floor, and the temperature measuring means detect the floor.
  • the first operation condition is determined in advance. Control to generate a second airflow that satisfies either the temperature is at least lower than the first airflow or the velocity component in the vertical direction is large when the temperature difference is equal to or greater than the first threshold value. It is provided with a control means for performing.
  • the air conditioning system of the present disclosure detects the existence of a high ceiling in a room, and when there is a difference between the air temperature near the high ceiling and the air temperature near the floor, the air near the high ceiling and the vicinity of the floor By mixing with the air of the above, the above temperature difference is eliminated. As a result, the comfort of people in the room is improved and energy saving is achieved.
  • FIG. It is a figure which shows the structure of the air-conditioning system of Embodiment 1.
  • FIG. It is a figure of the room where the indoor unit of Embodiment 1 is installed. It is a figure which shows the structure of the indoor unit of Embodiment 1.
  • FIG. It is a figure which shows the function of the wind direction adjusting means of Embodiment 1.
  • FIG. It is a figure which shows the structure of the distance measuring means of Embodiment 1.
  • FIG. It is a figure which shows the structure of the control means of Embodiment 1.
  • FIG. It is a figure which shows the measurement result of the distance measuring means of Embodiment 1.
  • FIG. It is a flowchart which shows the operation example of the air-conditioning system of Embodiment 1.
  • FIG. It is a figure which shows the implementation condition of the temperature difference reduction mode of Embodiment 1.
  • FIG. It is a figure which shows the detail of the implementation condition of the temperature difference reduction mode of Embodiment 1.
  • FIG. It is a figure which shows the control target and the change value of the operation mode of Embodiment 1.
  • FIG. It is a figure which shows the function of the temperature difference reduction mode of Embodiment 1.
  • FIG. It is a figure which shows another function of the temperature difference reduction mode of Embodiment 1.
  • FIG. It is a figure which shows the structure of the control means of Embodiment 2.
  • It is a flowchart which shows the operation example of the air-conditioning system of Embodiment 2.
  • FIG. It is a flowchart which shows the operation example of the air-conditioning system of Embodiment
  • FIG. 1 is a diagram showing a configuration of an air conditioning system 1000 according to the present embodiment.
  • the air conditioning system 1000 is a so-called separate type heat pump type air conditioning system.
  • the air conditioning system 1000 includes an indoor unit 100, an outdoor unit 101, and a terminal 70 for human operation.
  • the indoor unit 100 and the outdoor unit 101 are connected by a pipe such as a copper pipe to form a refrigerant circuit.
  • a pipe such as a copper pipe to form a refrigerant circuit.
  • an HFC (HydroFluoroCarbons) refrigerant such as R32 (difluoromethane)
  • R290 propane
  • the type of the refrigerant flowing in the refrigerant circuit is not particularly limited.
  • the structure and function of each component of the air conditioning system 1000 will be described focusing on the heating operation in which a difference is likely to occur between the air temperature of the high ceiling space 300 and the air temperature near the floor 206.
  • the outdoor unit 101 includes a compressor 1 that compresses the refrigerant, an outdoor heat exchanger 2 that exchanges heat between the outside air and the refrigerant, an outdoor air blowing means 3 that sends the outside air to the outdoor heat exchanger 2, and a variable opening degree. It has an expansion valve 4 and.
  • the compressor 1 and the outdoor heat exchanger 2 and the outdoor heat exchanger 2 and the expansion valve 4 are connected by a copper tube or the like.
  • the outdoor unit 101 has a control means 50.
  • the control means 50 includes a high ceiling detecting means 51, a floor detecting means 52, a temperature difference calculating means 53, a storage means 54, and an operation control means 55.
  • the indoor unit 100 includes an indoor heat exchanger 5 that exchanges heat between indoor air and a refrigerant, an indoor air blowing means 6 that sends indoor air to the indoor heat exchanger 5, and an air flow blown from the indoor unit. It has a wind direction adjusting means 7 for adjusting the direction.
  • the indoor heat exchanger 5 is connected to the compressor 1 and the expansion valve 4 of the outdoor unit 101 by a copper tube or the like.
  • the indoor unit 100 includes a distance measuring means 10 for measuring the distance in the room, a temperature measuring means 11 for measuring the temperature distribution in the room, and a suction temperature measuring means 12 for measuring the temperature of the air sucked into the indoor unit 100.
  • the indoor air blowing means 6, the wind direction adjusting means 7, the distance measuring means 10, the temperature measuring means 11, and the suction temperature measuring means 12 are controlled by the control means 50.
  • the compressor 1 is a device that compresses the refrigerant by, for example, a scroll compressor, a rotary compressor, or another method.
  • the compressor 1 compresses the inflowing low-pressure refrigerant vapor and discharges the high-temperature and high-pressure refrigerant vapor.
  • the refrigerant vapor discharged by the compressor 1 flows into the indoor heat exchanger 5 of the indoor unit 100.
  • the indoor heat exchanger 5 heat exchange is performed between the indoor air and the refrigerant.
  • the indoor heat exchanger 5 functions as a condenser, and the inflowing high-temperature and high-pressure refrigerant vapor is condensed and changed into a high-pressure liquid refrigerant.
  • the liquid refrigerant flowing out of the indoor heat exchanger 5 flows into the expansion valve 4.
  • the expansion valve 4 is a pressure reducing device that can continuously change the opening degree.
  • the expansion valve 4 decompresses the liquid refrigerant flowing from the indoor heat exchanger 5 and changes it into a low-pressure low-temperature steam-liquid two-phase refrigerant.
  • the two-phase refrigerant flowing out of the expansion valve 4 flows into the outdoor heat exchanger 2.
  • the outdoor heat exchanger 2 heat exchange is performed between the outside air and the refrigerant.
  • the outdoor heat exchanger 2 functions as an evaporator, and the inflowing low-temperature low-pressure two-phase refrigerant evaporates and changes to low-pressure refrigerant vapor.
  • the refrigerant vapor flowing out of the outdoor heat exchanger 2 flows into the compressor 1.
  • the inflowing low-pressure refrigerant vapor is again converted into high-temperature and high-pressure refrigerant vapor and discharged to the indoor heat exchanger 5.
  • the refrigerant circulates between the indoor unit 100 and the outdoor unit 101. That is, when the heating operation is executed in the air conditioning system 1000, the refrigerant passes through the compressor 1, the indoor heat exchanger 5, the expansion valve 4, and the outdoor heat exchanger 2 in this order and circulates.
  • the outdoor ventilation means 3 is, for example, a propeller fan.
  • the outdoor air blowing means 3 is arranged in the vicinity of the outdoor heat exchanger 2. When the outdoor air blowing means 2 operates, the outside air is sucked into the outdoor unit 101, passes through the outdoor heat exchanger 2, and then blown out from the outdoor unit 101.
  • the terminal 70 is a remote control terminal for a person to operate the air conditioning system 1000.
  • the terminal 70 is a remote controller, a smartphone, a wearable terminal, a smart speaker, or the like.
  • the terminal 70 receives a target temperature, a wind direction setting, a time reservation, etc. input from a person, and transmits a signal for controlling the air conditioning system 1000 to the operation control unit 55.
  • FIGS. 2A and 2B are diagrams showing an example of an air-conditioned room in which the indoor unit 100 is installed.
  • 2 (a) and 2 (b) are rooms having the same shape, and are spaces surrounded by walls 200, 202, 204 and 205, ceilings 201 and 203, and a floor 206.
  • the heights of the ceiling 201 and the ceiling 203 are different, and the ceiling 201 is lower than the ceiling 203.
  • the line 207 is an extension line formed by horizontally extending the ceiling 201.
  • the space surrounded by the wall 202, the ceiling 203, the wall 204, and the line 207 is defined as the high ceiling space 300.
  • the high ceiling space 300 is not a space where people actually live, but a space for improving the feeling of openness in the room and installing a window for daylighting. Since the high ceiling space 300 is not a space where people live, it is not necessary to perform air conditioning. However, when the air conditioning system 1000 is operated in the heating operation, warm and low-density air tends to stay in the high ceiling space 300. Further, the space surrounded by the wall 200, the ceiling 201, the line 207, the wall 205, and the floor 206 is defined as a living space 301.
  • the indoor unit 100 is installed on the wall 200.
  • the dotted lines L30 and L40 are lines showing the arrival path of the ultrasonic wave when the vertical angle of the distance measuring means 10 described later is set to 30 degrees and 40 degrees in the upward direction.
  • the dotted lines L-60, L-30 and L-20 indicate the arrival path of ultrasonic waves when the vertical angle of the distance measuring means 10 described later is set to 60 degrees, 30 degrees and 20 degrees downward. It is a line to show.
  • the installation position of the indoor unit 100 is not particularly limited.
  • the indoor unit 100 is installed on the wall 200 in FIG. 2A, it may be installed on the wall 205 as shown in FIG. 2B.
  • the relative positions of the high ceiling space 300 and the indoor unit 100 are different.
  • the indoor unit 100 may be a wall-embedded built-in type embedded in a wall surface or a floor-standing type placed on the floor 206 as shown in FIG. 2 (c).
  • the outlet is often located in front of the indoor unit housing, and in some cases, the airflow can be blown upward from the outlet of the indoor unit. be. Even in such a case, the structure and operation of the air conditioning system 1000 described below are the same.
  • the use of the indoor space is not particularly limited.
  • the room in which the indoor unit 100 is installed may be a residential living room, an office, or a factory.
  • windows, doors, ventilation openings and the like may be attached to any wall and ceiling.
  • FIG. 3 is a diagram showing the structure of the indoor unit 100 in the present embodiment.
  • the indoor unit 100 has a housing 30.
  • the housing 30 is provided with a suction port 31 and an outlet 32.
  • a suction temperature measuring means 12 is attached to the suction port 31.
  • the suction temperature measuring means 12 is, for example, a thermistor.
  • a wind direction adjusting means 7 is attached to the outlet 32.
  • the indoor heat exchanger 5 and the indoor air blowing means 6 are housed inside the housing 30.
  • a distance measuring means 10 and a temperature measuring means 11 are attached to the lower right portion of the housing 30.
  • the mounting positions of the distance measuring means 10 and the temperature measuring means 11 are not limited to the lower right portion of the housing, and may be mounted at any position of the housing 30, or may be embedded in the housing 30.
  • the indoor ventilation means 6 is, for example, a cross flow fan.
  • the indoor blower means 6 is arranged in the vicinity of the indoor heat exchanger 5. When the indoor air blowing means 6 operates, the air in the room is sucked into the indoor unit 100 from the suction port 31, passes through the indoor heat exchanger 5, and then blown out into the room from the outlet 32.
  • the indoor ventilation means 6 may be a propeller fan, a sirocco fan, or the like, or a plurality of them may be arranged.
  • the wind direction adjusting means 7 is composed of, for example, a plate-shaped flap and a vane.
  • the wind direction adjusting means 7 is composed of flaps 7a, 7b, 7c, and 7d, and vanes 7e and 7f.
  • the flaps 7a, 7b, 7c, and 7d each have an independent rotation mechanism, and the flaps 7a, 7b, 7c, and 7d rotate to change the angle, so that the airflow blown from the indoor unit 100 is blown out.
  • the vertical direction of is changed.
  • the vanes 7e and 7f also have independent rotation mechanisms, and when the vanes 7e and 7f rotate and the angle changes, the left-right direction of the airflow blown from the indoor unit 100 changes.
  • FIG. 4 is a diagram showing changes in the angles of the flaps 7a, 7b, 7c, and 7d.
  • the flaps 7a, 7b, 7c, and 7d are controlled to any one of five stages from the horizontal "vertical wind direction 1" to the vertically downward “vertical wind direction 5". Will be done.
  • the flaps 7a, 7b, 7c, and 7d are controlled to the "up and down wind direction 4" when the flaps 7a, 7b, 7c, and 7d are lowered by one step from the "up and down wind direction 3".
  • the vertical direction of the airflow blown from the indoor unit 100 changes.
  • the change in the angle of the flaps 7a, 7b, 7c, and 7d is shown in 5 steps in FIG. 4, the change in the angle is not limited to the 5 steps and may be more or less than this.
  • the angles of the vanes 7e and 7f also change in the left-right direction in the same manner.
  • the indoor air blowing means 6 when the indoor air blowing means 6 operates, the indoor air is sucked from the suction port 31, and the air is heated by the indoor heat exchanger 5. The heated air is blown out from the outlet 32, and the wind direction thereof is adjusted by the wind direction adjusting means 7. As a result, the temperature of the air in the room is adjusted, and air conditioning is performed by the heating operation.
  • the positions of the suction port 31 and the outlet 32 are not limited to the example shown in FIG.
  • the suction port 31 may be provided at the lower portion or the side portion of the housing 30.
  • the outlet 32 may be provided on the upper portion or the side portion of the housing 30.
  • the shape and number of the suction port 31 and the outlet 32 may be arbitrary.
  • circular suction ports may be provided on both sides of the housing 30, and a plurality of outlets having different sizes may be provided on the housing 30. It may be provided side by side at the bottom of.
  • the shapes and arrangements of the indoor heat exchanger 5, the indoor blower means 6, and the wind direction adjusting means 7 are appropriately changed according to the positions and shapes of the suction port 31 and the blowout port 32.
  • the distance measuring means 10 scans the room and acquires distance data. It is desirable that the distance measuring means 10 measures the distance at a wide angle in the vertical direction as much as possible with the indoor unit 100 as a reference.
  • the distance data measured by the distance measuring means 10 is transmitted to the high ceiling detecting means 51, the floor detecting unit 52, and the storage means 54.
  • the high ceiling detecting means 51 analyzes the distance data when the distance measuring means 10 is facing upward from the horizontal, and depending on whether the distance data is divided into a plurality of groups, the height is high indoors. Detects whether the ceiling space 300 exists. When the high ceiling space 300 exists, the high ceiling detecting means 51 further detects the range of the high ceiling space 300.
  • the floor detecting means 52 analyzes the distance data measured by the distance measuring means 10 especially when the distance measuring means 10 is facing downward from the horizontal, and the floor 206 is determined by the tendency of the distance to increase or decrease. Detect the range. The details of the distance data analysis method of the high ceiling detecting means 51 and the floor detecting means 52 will be described later.
  • the distance measuring means 10 is composed of, for example, an ultrasonic distance sensor (hereinafter referred to as an ultrasonic sensor) and a drive mechanism.
  • An ultrasonic sensor emits an ultrasonic pulse in a specific direction and receives a reflected wave that hits a wall, ceiling, or the like and is reflected.
  • the distance from the ultrasonic sensor to the wall or ceiling is obtained by multiplying the time from the transmission of the ultrasonic pulse to the reception and the speed of sound and dividing by 2.
  • the distance measuring means 10 may be composed of a laser type distance sensor or an infrared type distance sensor and a drive mechanism.
  • the ultrasonic sensor can be rotated at least in the vertical direction by the drive mechanism.
  • the drive mechanism is, for example, a stepping motor, the direction of the motor shaft is horizontal, and an ultrasonic sensor is attached to the motor shaft via a support member.
  • FIG. 5 schematically shows an example of the drive mechanism.
  • a support member 23 is attached to a motor shaft 22 extending from a motor main body 21, and an ultrasonic sensor 24 is attached to the support member 23.
  • the ultrasonic sensor 24 rotates in the vertical direction.
  • the ultrasonic sensor can be rotated in the vertical and horizontal directions by adding another stepping motor. If the ultrasonic sensor can rotate in the vertical and horizontal directions, it is desirable that the presence of the high ceiling space 300 in the room can be detected more reliably.
  • the ultrasonic sensor will be described as being rotatable in the vertical and horizontal directions.
  • the temperature measuring means 11 scans the room and measures the temperature distribution of the floor, the wall, and the ceiling.
  • the temperature measuring means 11 measures the temperature in a range including at least the floor 206 and the ceiling 203 and the wall 204 constituting the high ceiling space 300.
  • the temperature measuring means 11 measures the temperature of the wall 204, it is desirable to measure the temperature at the highest possible position. This is to enable the temperature difference calculating means 53, which will be described later, to more reliably calculate the temperature difference in the vertical direction in the room.
  • the temperature measuring means 11 transmits the measured temperature distribution to the temperature difference calculating means 53 and the storage means 54.
  • the temperature difference calculating means 53 calculates the temperature difference between the high ceiling space 300 and the floor 206.
  • the temperature measuring means 11 is composed of, for example, a thermopile in which infrared sensors are arranged in a grid pattern and a drive mechanism. Thermopile measures temperature based on infrared rays emitted from floors, walls, and ceilings.
  • the temperature measuring means 11 may be composed of an uncooled infrared image sensor or the like and a drive mechanism.
  • the drive mechanism of the temperature measuring means 11 may be the same mechanism as the driving mechanism of the distance measuring means 10 shown in FIG. 5, and the distance measuring means 10 and the temperature measuring means 11 may share one driving mechanism.
  • FIGS. 2A, 2B and 3 the distance measuring means 10 and the temperature measuring means 11 are illustrated as being driven by one driving mechanism.
  • the distance measuring means 10 and the temperature measuring means 11 share one drive mechanism that can be driven vertically and horizontally.
  • the suction temperature measuring means 12 is attached between the suction port 31 and the indoor heat exchanger 5 in the indoor unit 100.
  • the suction temperature measuring means 12 measures the temperature of the air in the room sucked from the suction port 31.
  • the suction temperature measuring means 12 transmits the measured temperature to the storage means 54 and the operation control means 55.
  • the control means 50 is, for example, between a CPU (Central Processing Unit), a storage medium such as a ROM (Read Only Memory) storing a control program, a working memory such as a RAM (Random Access Memory), and a CPU, ROM, and RAM. It consists of a signal circuit that exchanges signals.
  • a CPU Central Processing Unit
  • ROM Read Only Memory
  • RAM Random Access Memory
  • control means 50 may be provided with a communication means for communicating with an external cloud server.
  • control means 50 can send and receive various information to and from the cloud server via the communication means. Specifically, the update data of the control program is received from the cloud server, and the operation history of the air conditioning system 1000 is transmitted to the cloud server.
  • the control means 50 receives the measurement results of the distance measuring means 10, the temperature measuring means 11, and the suction temperature measuring means 12, and the input result of a person to the terminal 70.
  • the control means 50 stores a control program for exerting the functions of the air conditioning system 1000, and based on the reception result and the control program, the compressor 1, the outdoor air blowing means 3, the expansion valve 4, and the indoor blowing means are stored. 6 and a command for operating the wind direction adjusting means 7 are issued.
  • FIG. 6 is a diagram showing the configuration of the control means 50.
  • the control means 50 includes a high ceiling detecting means 51, a floor detecting means 52, a temperature difference calculating means 53, a storage means 54, and an operation control means 55.
  • the high ceiling detecting means 51 detects whether or not the high ceiling space 300 exists based on the distance data measured by the distance measuring means 10, and if the high ceiling space 300 exists, further detects the range thereof.
  • the high ceiling detecting means 51 transmits the result of the above processing to the temperature difference calculating unit 53, the storage means 54, and the operation control unit 55.
  • the high ceiling detecting means 51 detects whether or not the high ceiling space 300 exists by, for example, the following method.
  • the high ceiling detecting means 51 first extracts the distance data measured by the distance measuring means 10 when the vertical angle of the distance measuring means 10 is upward.
  • the vertical angle of the distance measuring means 10 is upward means above the horizontal direction.
  • the high ceiling detecting means 51 detects whether or not the high ceiling space 300 exists in the extracted data depending on whether or not a significantly different data group exists.
  • FIGS. 7A and 7B are examples of extracting the distance data measured by the distance measuring means 10 when the vertical angle of the distance measuring means 10 is upward.
  • the left-right angle of the distance measuring means 10 of 0 degrees means the front direction of the indoor unit 100.
  • the distance is large when the vertical angle of the distance measuring means 10 is 30 degrees or less, and the distance is small when the vertical angle is larger than 30 degrees.
  • the distance measuring means 10 measures the distance from the indoor unit 100 to the wall 204 as shown by the line L30.
  • the distance data can be divided into groups that are significantly different from the change in the vertical angle of the distance measuring means 10 in this way. In this way, the high ceiling detecting means 51 detects that the high ceiling space 300 exists.
  • FIG. 7B is an example of partially extracting the distance data measured by the distance measuring means 10 when the high ceiling space 300 is above the indoor unit 100 as shown in FIG. 2B.
  • the horizontal angle and the vertical angle of the distance measuring means 10 change in a range of 0 to 80 degrees in 10 degree increments, which is the distance measuring means 10. It does not limit the measurement range and measurement interval.
  • the criteria for whether the distance data measured by the distance measuring means 10 can be divided into a plurality of significant groups may be arbitrarily set. For example, when the distance data shown in FIGS. 7 (a) and 7 (b) are arranged in order from the one with the largest value, a predetermined distance is specified between the N (integer) th distance data and the N + 1th distance data from the top. When there is a decrease of the value of (for example, 100 [cm]) or more, it may be possible to divide into a plurality of significant groups.
  • the high ceiling detecting means 51 may select the distance data by, for example, the following method. Select one of the distance data extracted as shown in FIGS. 7A and 7B, and another distance within a predetermined value (for example, 50 [cm]) from the distance data. In the absence of data, the selected distance data is considered to be due to erroneous measurement. The distance data considered to be due to erroneous measurement is removed, and it is determined whether the other distance data can be divided into a plurality of significant groups by the above method.
  • the method described above is an example of a method in which the high ceiling detecting means 51 detects the presence or absence of the high ceiling space 300, and the high ceiling detecting means 51 may detect the presence or absence of the high ceiling space 300 by any other method. good.
  • a method of detecting the presence or absence of a step on the floor surface from distance data is disclosed as a known technique, but it is also possible to detect the presence or absence of a high ceiling space 300 by applying the same method to the air conditioning system 1000. be.
  • the high ceiling detecting means 51 detects a range of the high ceiling space 300 in the left-right direction. Specifically, the high ceiling detecting means 51 ranges from the distance from the indoor unit 100 to the boundary between the ceiling 201 and the high ceiling space 300 and the distance from the indoor unit 100 to the wall 205 to the high ceiling space 300. Is detected. First, the high ceiling detecting means 51 calculates the distance from the indoor unit 100 to the boundary between the ceiling 201 and the high ceiling space 300 in each of the left and right directions by the following calculation formula (i). D ⁇ cos ⁇ ⁇ ⁇ ⁇ (i)
  • ⁇ is the vertical angle of the distance measuring means 10 immediately after the ceiling 201 and the high ceiling space 300 are switched, and is 40 degrees in FIG. 7A.
  • D is the distance data in that case.
  • the calculation result of the calculation formula (i) is 133 [cm] (175 ⁇ cos40 °).
  • the high ceiling detecting means 51 calculates that the distance from the indoor unit 100 to the boundary between the ceiling 201 and the high ceiling space 300 is 133 [cm] or more in the front direction of the indoor unit 100.
  • the distance to the boundary between the ceiling 201 and the high ceiling space 300 is calculated by the same method. Strictly speaking, in the above method, the distance to a little before the boundary between the ceiling 201 and the high ceiling space 300 is calculated. Therefore, the value obtained by adding a predetermined value (for example, 30 [cm]) to the above calculation result is referred to as the ceiling 201. It may be the distance to the boundary of the high ceiling space 300.
  • the high ceiling detection unit 51 further acquires the distance from the indoor unit 100 to the wall 205 from the distance data when the vertical angle of the distance measuring means 10 is 0 degrees. In FIG. 7A, it is 525 [cm].
  • the high ceiling detection unit 51 detects the range of the high ceiling space 300 by reducing the distance from the distance to the wall 205 to the boundary between the ceiling 201 and the high ceiling space 300.
  • the high ceiling detecting means 51 As a method for the high ceiling detecting means 51 to detect the range of the high ceiling space 300, a method other than that described above can be used. For example, a method of detecting a recess on the floor surface from distance data and detecting the size thereof is disclosed as a known technique. By applying the same method to the air conditioning system 1000, it is possible to detect the range of the high ceiling space 300.
  • the floor detecting means 52 identifies the boundary between the floor 206 and the wall 205 based on the indoor distance data measured by the distance measuring means 10, and detects the range in the left-right direction of the floor 206. Specifically, among the distance data measured by the distance measuring means 10, the distance data when the vertical angle of the distance measuring means 10 is downward is extracted. Here, the downward angle of the distance measuring means 10 in the vertical direction means that the angle is lower than the horizontal direction.
  • the floor detecting means 52 detects the floor 206 as the range in which the distance from the indoor unit 100 continues to increase when the angle of the distance measuring means 10 is changed from the lower direction to the upper direction while keeping the left-right direction constant. ..
  • the floor detecting means 52 transmits the result of the above processing to the temperature difference calculating unit 53, the storage means 54, and the operation control unit 55.
  • a method of detecting the range of the floor using the distance data is disclosed as a known technique.
  • the floor detecting means 52 may detect the range of the floor 206 by using those known techniques.
  • the floor detecting means 52 may detect the range of the floor 206 by the following method.
  • the floor detecting means 52 detects the range of the floor 206 based on the temperature data measured by the temperature measuring means 11. It is known that in a general building, the temperature distribution of the floor differs from the temperature distribution of the wall. For example, it is known that the temperature distribution of the floor is often close to uniform, but the temperature distribution of the wall is difficult to be uniform. There is a known technique for specifying a floor by utilizing such a difference in tendency. Also in this embodiment, the range of the floor 206 may be detected by the same method.
  • the temperature difference calculating means 53 determines the temperature of the high ceiling space 300 and the temperature of the floor 206 from the result of the processing performed by the high ceiling detecting means 51 and the floor detecting means 52 and the temperature data measured by the temperature measuring means 11. get. Next, the indoor temperature difference is calculated by reducing the temperature of the floor 206 from the temperature of the high ceiling space 300. The temperature difference calculating means 53 transmits the calculated indoor temperature difference to the storage means 54 and the operation control means 55.
  • the temperature difference calculating means 53 sets the average value or the median value of the plurality of measurement results to the high ceiling. It may be the temperature of the space 300. Furthermore, the standard deviation is calculated from multiple measurement results, and the value considered to be an erroneous measurement is excluded by the conditions determined based on the standard deviation (for example, the difference from the average value is three times or more the standard deviation). Then, processing such as calculating the average value may be performed. If there are temperature measurement results at a plurality of positions on the floor 206, the above processing may be applied to the temperature on the floor 206 as well.
  • the storage means 54 stores a control program for operating the air conditioning system 1000. More specifically, the storage means 54 includes a compressor 1, an outdoor blowing means 3, an expansion valve 4, an indoor blowing means 6, a wind direction setting means 7, a distance measuring means 10, a temperature measuring means 11, and a suction temperature measuring means 12. Remembers the program that runs. In addition, the storage means 54 includes the measurement results of the distance measuring means 10, the temperature measuring means 11, and the suction temperature measuring means 12, and the processing results of the high ceiling detecting means 51, the floor detecting means 52, and the temperature difference calculating means 53. , The input result of the person to the terminal 70 is also stored.
  • the operation control means 55 issues a command to each element constituting the air conditioning system 1000 in order to control the overall operation operation of the air conditioning system 1000.
  • the operation control means 55 includes a compressor 1, an outdoor blower means 3, an expansion valve 4, an indoor blower means 6, a wind direction adjusting means 7, a distance measuring means 10, a temperature measuring means 11, and a suction temperature measuring means 12. Issue a command to it.
  • each element constituting the air conditioning system 1000 operates, and the function of the air conditioning system 1000 is exhibited.
  • the contents of the command issued by the operation control means 55 are at least the processing results of the high ceiling detecting means 51, the floor detecting means 52, and the temperature difference calculating means 53, the input of a person to the terminal 70, and the storage means 54. It is determined based on the control program stored in.
  • FIG. 8 is a flowchart showing an operation example of the air conditioning system 1000. The duplicated explanation will be simplified or omitted as appropriate.
  • the operation of the air conditioning system 1000 shown in FIG. 8 is started when a command for starting the heating operation is input to the terminal 70 by a person. At this time, at least the target temperature for adjusting the temperature of the indoor air is specified by a person. The target temperature is stored in the storage means 54. Then, S101 is started immediately.
  • the suction temperature measuring means 12 measures the temperature of the indoor air sucked into the indoor unit 100.
  • the temperature measured by the suction temperature measuring means 12 is stored in the storage means 54.
  • the high ceiling detecting means 51 detects the presence or absence of the high ceiling space 300 and detects the range thereof. Further, the floor detecting means 52 detects the range of the floor 206.
  • the distance measuring means 10 scans the room and acquires distance data. The acquired distance data is transmitted to the high ceiling detecting means 51 and the floor detecting means 52.
  • the high ceiling detecting means 51 analyzes the above distance data. Specifically, the data when the vertical angle of the distance measuring means 10 is upward is extracted from the above distance data, and the presence or absence of the high ceiling space 300 is determined by whether the data is divided into a significant number of significant groups. Detect. When the high ceiling space 300 exists, the high ceiling detecting means 51 determines the high ceiling space from the distance from the indoor unit 100 to the wall 205 and the distance from the upper indoor unit 100 to the boundary between the ceiling 201 and the high ceiling space 300. It also detects a range of 300.
  • the air conditioning system 1000 continues to operate even when the high ceiling space 300 does not exist in the room and there is only a ceiling of a single height. Since there are parts that are common to the operation depending on whether the high ceiling space 300 exists or not, the following description will be given only to the necessary parts.
  • the floor detecting means 52 detects the range of the floor 206.
  • the floor detecting means 52 specifies the range of the floor 206 from the distance data measured by the distance measuring means 10. Specifically, when the data when the vertical angle of the distance measuring means 10 is downward is extracted and the vertical angle is changed upward, the distance from the indoor unit 100 increases. The range to be continued is detected as the floor 206.
  • the processing results of the high ceiling detecting means 51 and the floor detecting means 52 are transmitted to the temperature difference calculating means 53, the storage means 54, and the operation control means 55.
  • the temperature measuring means 11 scans the room and measures the temperature distribution.
  • the temperature measuring means 11 measures at least the temperature of the high ceiling space 300 and the floor 206.
  • the temperature data measured by the temperature measuring means 11 is transmitted to the temperature difference calculating means 53, the storage means 54, and the operation control means 55.
  • the temperature measuring means 11 measures the temperature of the ceiling.
  • the temperature of the high ceiling space 300 is used in the operation of the air conditioning system 1000 such as S111 described later, the temperature of the ceiling is used instead.
  • the temperature difference calculating means 53 calculates the indoor temperature difference, which is the temperature difference between the high ceiling space 300 and the floor 206.
  • the temperature difference calculating means 53 extracts the temperatures of the high ceiling space 300 and the floor 206 from the processing results of the high ceiling detecting means 51 and the floor detecting means 52 and the measurement results of the temperature measuring means 11.
  • the temperature difference calculating means 53 calculates the indoor temperature difference by subtracting the temperature of the floor 206 from the temperature of the extracted high ceiling space 300.
  • the calculated indoor temperature difference is transmitted to the storage means 54 and the operation control means 55.
  • the room temperature difference is calculated by subtracting the floor temperature from the ceiling temperature.
  • the indoor temperature difference when the high ceiling space 300 is present and the indoor temperature difference when the high ceiling space 300 is not present are not distinguished from each other in terms of the operation of the air conditioning system 1000.
  • the operation control means 55 determines whether indoor temperature control is necessary. First, the suction temperature measuring means 12 measures the temperature of the air in the room sucked into the indoor unit 100. The measured temperature is transmitted to the storage means 54 and the operation control means 55. Next, the operation control means 55 refers to the storage means 54 and compares the target temperature set at the start with the temperature of the indoor air measured in S101. If the temperature of the indoor air is lower than the target temperature, the operation control means 55 determines that temperature control is necessary, and proceeds to S106. On the other hand, if the temperature of the indoor air is equal to or higher than the target temperature, the operation control means 55 determines that the temperature control is not necessary, and proceeds to S107.
  • the operation control means 55 operates the air conditioning system 1000 in a heating operation with temperature control.
  • the operation control means 55 operates the compressor 1, the outdoor air blowing means 3, the expansion valve 4, the indoor blowing means 6, and the wind direction adjusting means 7, and is heated so that the room temperature becomes equal to the target temperature. Supply air to the room.
  • the operation control means 55 operates the air conditioning system 1000 without temperature control.
  • the operation without temperature control is, for example, a blower operation.
  • the operation control means 55 operates only the indoor blower means 6 and the wind direction adjusting means 7. As a result, an air flow having the same temperature as the indoor air is blown out from the indoor unit 100.
  • the operation control means 55 continues the operation of the air conditioning system 1000 executed in S106 or S107 for a predetermined time.
  • the predetermined time may be any time, for example, 10 seconds, 1 minute or 10 minutes. After a predetermined time has elapsed, the process proceeds to S109.
  • the suction temperature measuring means 12 measures the temperature of the indoor air sucked into the indoor unit 100 again.
  • the measured temperature is transmitted to the storage means 54 and the operation control means 55.
  • the storage means 54 stores both the temperature measured in S101 and the temperature measured in S109.
  • the operation control means 55 determines whether the air conditioning system 1000 is operating in the heating operation with temperature control. Specifically, the operation control means 55 refers to the control state of the compressor 1 and the like, and determines whether the air conditioning system 1000 is operating in the heating operation with temperature control. If it is determined that the air conditioning system 1000 is operating in the heating operation with temperature control, the process proceeds to S111. On the other hand, if it is determined that the air conditioning system 1000 is not operating in the heating operation with temperature control, the process proceeds to S120.
  • the temperature measuring means 11 again measures the temperature of the high ceiling space 300 and the floor 206. At this time, it is desirable that the positions where the temperatures of the high ceiling space 300 and the floor 206 are measured are the same as the positions where the temperatures are measured in S103. The measured temperature is transmitted to the storage means 54 and the operation control means 55.
  • the temperature difference calculating means 53 calculates the time change of the indoor temperature difference.
  • the temperature difference calculating means 53 first calculates the indoor temperature difference by subtracting the temperature of the floor 206 from the temperature of the high ceiling space 300 measured in S111. This indoor temperature difference is compared with the indoor temperature difference calculated in S104 stored in the storage means 54, and the time change of the indoor temperature difference is calculated.
  • the temperature difference calculating means 53 sets the indoor temperature difference calculated based on the temperature of S111 as ⁇ T (n + 1), and the indoor temperature difference calculated in S104 as ⁇ T (n) and ⁇ T (n + 1). With the calculated time as t (n + 1) and the time when ⁇ T (n) is calculated as t (n), the time change of the indoor temperature difference is calculated by the following formula (ii). ( ⁇ T (n + 1) - ⁇ T (n)) / (t (n + 1) -t (n)) ... (ii) The calculated time change of the indoor temperature difference is transmitted to the storage means 54 and the operation control means 55.
  • the operation control means 55 determines whether the time change of the indoor temperature difference calculated in S112 is equal to or greater than the predetermined first threshold value ⁇ Th1. If the time change of the indoor temperature difference is ⁇ Th1 or more, the process proceeds to S117. In S117, the air conditioning system 1000 operates in the temperature difference reduction mode 1. The details of the temperature difference reduction mode 1 will be described later. On the other hand, if the time change of the indoor temperature difference is less than ⁇ Th1, the process proceeds to S114.
  • the operation control means 55 determines whether the time change of the indoor temperature difference calculated in S112 is equal to or greater than a predetermined second threshold value ⁇ Th2.
  • the second threshold value ⁇ Th2 is smaller than the first threshold value ⁇ Th1. If the time change of the indoor temperature difference is ⁇ Th2 or more, the process proceeds to S118.
  • the air conditioning system 1000 operates in the temperature difference reduction mode 2. The details of the temperature difference reduction mode 2 will be described later. On the other hand, if the time change of the indoor temperature difference is less than ⁇ Th2, the process proceeds to S115.
  • the operation control means 54 determines whether the indoor temperature difference calculated in S112 is equal to or greater than a predetermined third threshold value ⁇ Ts1. If the indoor temperature difference is ⁇ Ts1 or more, the process proceeds to S119. In S119, the air conditioning system 1000 operates in the temperature difference reduction mode 3. The details of the temperature difference reduction mode 3 will be described later. On the other hand, if the indoor temperature difference is less than ⁇ Ts1, the process proceeds to S116.
  • S113, S114, and S115 described above detect whether the temperature difference between the high ceiling space 300 and the floor 206 is expanding with the passage of time, and if it is expanding, how fast it is expanding. It is a process to do. For example, in S113, it is determined whether the indoor temperature difference is rapidly expanding. On the other hand, in S114 and S115, it is determined whether the indoor temperature difference is gradually increasing or whether the indoor temperature difference is present but not increasing. This is because, as will be described later, the operation of the air conditioning system 1000 is changed according to the degree of expansion of the indoor temperature difference.
  • the processing such as S113, S114, and S115 does not necessarily have to be performed in three stages, but it is desirable that there are a plurality of stages because the air conditioning system 1000 can be controlled by reflecting the state of the room.
  • the operation control means 55 operates the air conditioning system 1000 in a heating operation with temperature control.
  • the operation of the air conditioning system 1000 at this time is the same as the operation of S106.
  • the processing of S105 may be performed based on the temperature of the indoor air measured in S109 and the target temperature determined at the start. In this case, the operation without temperature control may be performed according to the result of the treatment.
  • the operation of the air conditioning system 1000 After the execution of S116, S117, S118, or S119, the operation of the air conditioning system 1000 returns to S109 after a predetermined time has elapsed. After returning to S109, the air conditioning system 1000 repeats the operation described above.
  • the process proceeds to S120.
  • S120 it is determined whether the temperature of the indoor air measured in S109 immediately before is lower than the temperature of the indoor air measured immediately before. For example, when S109 is executed a total of three times, it is determined whether the temperature of the indoor air measured in the third S109 is lower than the temperature of the indoor air measured in the second S109. If the temperature of the indoor air measured in S109 immediately before is lower than the temperature of the indoor air measured immediately before, the process proceeds to S121. On the other hand, if the temperature of the indoor air measured in S109 immediately before is not lower than the temperature of the indoor air measured immediately before, the process proceeds to S111.
  • the operation of the air conditioning system 1000 of S111 or less is as described above.
  • the operation control means 55 operates the air conditioning system 1000 in a heating operation with priority on temperature control.
  • priority is given to bringing the temperature of the indoor air to the target temperature. The details of the heating operation with priority on temperature control will be described later.
  • the temperature difference reduction modes 1 to 3 executed in S117, S118, and S119 are aimed at reducing the indoor temperature difference. As described above, which of S117, S118, and S119 is executed depends on the determination results of S113, S114, and S115. In addition, heating that prioritizes temperature control prioritizes reaching the target temperature at room temperature rather than reducing the indoor temperature difference.
  • FIG. 9 is a diagram showing the determination conditions of S113 in which the temperature difference reduction mode 1 is implemented.
  • FIG. 10 is a diagram showing the conditions under which the temperature difference reduction modes 1 to 3 are executed in relation to the indoor temperature difference and the elapsed time.
  • FIG. 11 is a diagram showing temperature difference reduction modes 1 to 3, conditions under which heating operation with priority on temperature control is performed, control targets in each operation, and control contents.
  • the conditions under which each operation mode is implemented will be described in detail, and then the control targets and control contents of the temperature difference reduction modes 1 to 3 and the heating operation with priority on temperature control will be described.
  • FIG. 9 is a diagram showing the time since the heating operation was started by a person, the temperature of the high ceiling space 300, the temperature of the floor 206, and the temperature difference in the room. In addition, FIG. 9 also shows the change in the indoor temperature difference per hour obtained from the above values.
  • the indoor temperature difference is 1.5 ° C. when the heating operation starts, 2.0 ° C. 15 minutes after the start of the heating operation, and 2.5 ° C. 30 minutes after the start of the heating operation. ..
  • the change in indoor temperature difference per hour is 2.0 ° C./h.
  • the first threshold value ⁇ Th1 is 1.5 ° C./h
  • the time change of the indoor temperature difference is larger than ⁇ Th1.
  • the above determination may be made by comparing the indoor temperature difference 1 hour after the start of the heating operation with the indoor temperature difference 2 hours later. Further, the temperature difference reduction mode 2 is executed when the time change of the indoor temperature difference is equal to or greater than the second threshold value ⁇ Th2.
  • FIG. 10 is a diagram showing the relationship between the time since the heating operation was started by a person and the indoor temperature difference.
  • Lines S1 and S2 in FIG. 10 show examples of a case where the indoor temperature difference rapidly increases with time and a case where the indoor temperature difference gradually increases, respectively. Further, the line S11 shows the case where the time change of the indoor temperature difference is equal to ⁇ Th1, and the line S12 shows the case where the time change of the indoor temperature difference is equal to ⁇ Th2.
  • the indoor temperature difference is rapidly expanding in the region A1 with the thin hatching above the line S11.
  • the temperature difference reduction mode 1 is executed because the time change of the indoor temperature difference is larger than ⁇ Th1.
  • the indoor temperature difference gradually increases.
  • the temperature difference reduction mode 2 is executed when the indoor temperature difference changes as shown by the line S2.
  • the temperature difference reduction mode 3 or the heating operation with temperature control is carried out.
  • the time change of the indoor temperature difference is small, and it does not mean that there is no indoor temperature difference.
  • the temperature difference reduction mode 3 is executed when the time change of the indoor temperature difference is small, but the indoor temperature difference itself is equal to or larger than the third threshold value ⁇ Ts1. Further, in the heating operation in which the temperature control is prioritized with respect to the implementation conditions of the temperature difference reduction modes 1 to 3, the temperature of the indoor air is changed with reference to the time change of the indoor air temperature measured by the suction temperature measuring means 12. Executed when it is decreasing over time.
  • the control targets and control contents of the temperature difference reduction modes 1 to 3 and the heating operation with priority on temperature control will be described.
  • the operation control means 55 lowers the frequency of the compressor 1 by F1.
  • the heating capacity of the air conditioning system 1000 is reduced, so that the temperature of the air blown from the indoor unit 100 is lowered.
  • the indoor temperature difference increases with time is that the warm air blown out from the indoor unit 100 is blown up due to the density difference with the indoor air.
  • the density difference with the indoor air becomes smaller, so that warm air reaches the vicinity of the floor 206, and the indoor temperature difference is reduced.
  • the operation control means 55 increases the rotation speed of the indoor blower means 6 by f1. Further, the operation control means 55 controls the wind direction adjusting means 7 to change the vertical direction of the airflow blown from the indoor unit 100 downward by at least one step or more. As a result, a stronger airflow is generated in the downward direction than before the temperature difference reduction mode 1 is executed, and warm air can easily reach the vicinity of the floor 206. Further, a strong downward air flow is blown out from the indoor unit 100, so that a vertical air flow is generated in the entire room. As a result, the air in the high ceiling space 300 having a high temperature and the air in the vicinity of the floor 206 having a low temperature are agitated, and the indoor temperature difference is further reduced.
  • the change value of the control target may be determined by the mounting position of the indoor unit 100 or the position of the high ceiling space 300.
  • the high ceiling space 300 exists at a position away from the indoor unit 100
  • the high ceiling space 300 exists above the indoor unit 100.
  • the direction of the airflow may be changed by only one step
  • the direction of the airflow may be changed by two or more steps.
  • the operation control means 55 lowers the frequency of the compressor 1 by F2. At this time, F2 is smaller than F1. This is because when the temperature difference reduction mode 2 is executed, the indoor temperature difference gradually increases with the passage of time, and the indoor temperature difference can be reduced without significantly changing the operating state of the air conditioning system 1000. By reducing the degree of decrease in the frequency of the compressor 1, the temperature of the airflow blown from the indoor unit 100 is not lowered more than necessary.
  • the rotation speed of the indoor blower means 6 is increased by f2, and the wind direction adjusting means 7 is controlled to change the vertical direction of the airflow blown from the indoor unit 100 downward by at least one step or more.
  • f2 is smaller than f1. This is because the indoor temperature difference gradually increases with the passage of time, so the wind speed is not increased more than necessary.
  • the operation control means 55 lowers the frequency of the compressor 1 by F3. At this time, F3 is smaller than F2.
  • the temperature difference reduction mode 3 it is considered that the time change of the indoor temperature difference is small and the state of the air in the room is stable. Therefore, the indoor temperature difference can be reduced by breaking the stable state without significantly changing the operating state of the air conditioning system 1000.
  • the operation control means 55 increases the rotation speed of the indoor blower means 6 by f3, controls the wind direction adjusting means 7, and changes the vertical direction of the airflow blown from the indoor unit 100 downward by at least one step or more. ..
  • f3 is smaller than f2. This is because the indoor temperature difference is reduced even if the air agitation in the vertical direction is weak.
  • the process returns to S109 after a predetermined time has elapsed.
  • the processing of S112 is performed again, the time change of the indoor temperature difference described above is determined again, and any one of the temperature difference reduction modes 1 to 3 or the heating operation with temperature control is executed. By repeating this, the optimum operation is appropriately executed based on the time change of the indoor temperature difference.
  • FIG. 12 (a) and 12 (b) are diagrams showing an example of the indoor state when the air conditioning system 1000 is operating in the temperature difference reduction modes 1 to 3.
  • the downward airflow 400 is blown out from the indoor unit 100 in the temperature difference reduction modes 1 to 3.
  • the airflow 400 causes strong vertical air agitation throughout the room.
  • the warm air 500 staying in the high ceiling space 300 is mixed with the air in the living space 301. This reduces the indoor temperature difference.
  • the indoor unit 100 is a wall-embedded built-in type.
  • the change value of the control target in the temperature difference reduction modes 1 to 3 may be determined by the relative positions of the indoor unit 100 and the high ceiling space 300.
  • the direction of the airflow is changed downward by one step, as shown in FIG. 12B.
  • the direction of the airflow may be changed upward by two or more steps.
  • FIG. 12A an airflow reaching the high ceiling space 300 at a distance from the indoor unit 100 is formed, and in FIG.
  • a particularly strong vertical airflow is formed in the high ceiling space 300.
  • the operation of the temperature difference reduction modes 1 to 3 is the same. In this case, the warm air accumulated near the ceiling is mixed with the air in the living space, and the temperature difference in the vertical direction in the room is reduced.
  • the operation control means 55 raises the frequency of the compressor 1 by F4.
  • the heating capacity of the air conditioning system 1000 increases, and the temperature of the airflow blown from the indoor unit rises. This high temperature airflow warms the indoor air and avoids a drop in room temperature.
  • the frequency of the indoor blower 6 and the direction of the wind direction adjusting means 7 do not have to be changed.
  • the air conditioning system 1000 calculates the temperature difference between the high ceiling space 300 and the floor 206 as the indoor temperature difference. Further, if the calculated indoor temperature difference is less than the third threshold value ⁇ Ts1, the heating operation with temperature control is executed. On the other hand, if the indoor temperature difference is equal to or greater than the third threshold value ⁇ Ts1, the air conditioning system 1000 executes the temperature difference reduction mode 3. As a result, air is agitated in the vertical direction in the room, and the warm air 500 staying in the high ceiling space 300 is mixed with the air in the living space 301. As a result, the indoor temperature difference can be reduced, and human comfort is improved and energy saving is achieved.
  • the air conditioning system 1000 calculates the time change of the indoor temperature difference.
  • the air conditioning system 1000 operates in the temperature difference reduction mode 1 when the time change of the indoor temperature difference is the first threshold value ⁇ Th1 or more, and operates in the temperature difference reduction mode 2 when the second threshold value ⁇ Th2 or more.
  • the air conditioning system 1000 executes a heating operation with priority on temperature control. As a result, it is possible to prevent the temperature of the air in the room from being lowered and the comfort of the person from being impaired.
  • the air conditioning system 1000 described above is merely an example, and can be variously modified without departing from the gist of the present disclosure.
  • this embodiment can be applied even if the indoor unit 100 is a floor-standing type.
  • FIG. 13 is a diagram showing the functions of the air conditioning system 1000 when the indoor unit 100 is a floor-standing type.
  • the upward airflow 401 is blown out from the indoor unit 100 arranged on the floor 206, and the warm air 500 staying in the high ceiling space 300 is mixed with the air in the living space 301 by the upward airflow 401.
  • the air conditioning system 1000 may be provided with a notification means for notifying the current operating state.
  • the notification means displays, for example, on the terminal 70 whether the air conditioning system 1000 is operating in the temperature difference reduction modes 1 to 3, the heating operation with temperature control, the heating operation without temperature control, or the heating operation with priority on temperature control. do. This allows a person to know the operating status of the air conditioning system 1000.
  • the terminal 70 may be provided with a function that allows a person to switch the operating state of the air conditioning system 1000.
  • the air conditioning system 1000 operates in an operating state selected by a person. As a result, the air conditioning system 1000 can be operated according to human intentions.
  • Embodiment 2 Embodiment 2 of the present disclosure will be described with reference to FIGS. 14, 15, and 16.
  • the air conditioning system 1000 according to the present embodiment will be described focusing on the differences from the first embodiment.
  • the configuration in which the description is omitted is the same as that in the first embodiment.
  • FIG. 14 is a diagram showing the configuration of the control means 50 in the present embodiment.
  • the control means 50 in the present embodiment includes a person detecting means 56 for detecting a person in the room in addition to the configuration of the control means 50 of the first embodiment shown in FIG.
  • the temperature measuring means 11 has the floor 206 and the high ceiling space 300 in order to detect a person in addition to the temperature in the range including the floor 206 and the ceiling 203 and the wall 204 constituting the high ceiling space 300.
  • the temperature of the living space 301 in between is also measured.
  • the temperature measuring means 11 also measures the temperature of the hand from the boundary between the wall 204 and the wall 205 to the boundary between the wall 205 and the floor 206.
  • the measured temperature is transmitted to the temperature difference calculating means 53, the operation control means 54, the storage means 55, and the person detecting means 56.
  • the person detecting means 56 detects a person based on the above temperature measured by the temperature measuring means 11.
  • the technique of detecting a person from the temperature distribution in the room is disclosed as a known technique. For example, a person's head is often exposed indoors, and its temperature is less affected by age and gender and is about 36 degrees Celsius. Therefore, a technique for detecting a person using this is disclosed. In the present embodiment as well, a person may be detected by the same method.
  • the person detecting means 56 detects that there is a person in the room, it also detects the direction in which the person is seen from the indoor unit 100. This is to prevent the airflow from directly hitting a person and reducing the comfort when the temperature difference reduction modes 1 to 3 are carried out, as will be described later.
  • the detection result of the human detection means 56 is transmitted to the operation control means 54 and the storage means 55.
  • FIG. 15 is a flowchart showing the operation of the air conditioning system 1000 according to the present embodiment. Comparing with the flowchart in FIG. 8, in FIG. 15, S111 is replaced with S201, and S202 is added after S211.
  • the temperature measuring means 11 also measures the temperature of the high ceiling space 300, the temperature of the floor 206, and the temperature of the living space 300.
  • the measured temperature is transmitted to the temperature difference calculating means 53, the operation control means 54, the storage means 55, and the person detecting means 56.
  • the person detecting means 56 detects a person from the temperature of the living space 300 measured in S201.
  • the human detection means 56 detects a person based on, for example, whether or not a portion of the room that is considered to be a human head exists based on the measured temperature. Further, at this time, the person detecting means 56 also detects the direction in which the person exists as seen from the indoor unit 100.
  • the detection result of the human detection means 56 is transmitted to the operation control means 54 and the storage means 55.
  • the temperature difference reduction modes 1 to 3 are executed as in the first embodiment.
  • the controlled objects and changed values of the temperature difference reduction modes 1 to 3 in the present embodiment are different from those in the first embodiment.
  • FIG. 16 is a diagram showing control targets and change values of the temperature difference reduction modes 1 to 3 in the present embodiment.
  • the operation control means 55 controls the wind direction adjusting means 7 to change the left-right direction of the airflow blown from the indoor unit 100 to a direction in which no one is present.
  • the other control targets and the changed values may be the same as those in the first embodiment.
  • the air conditioning system 1000 of the present embodiment detects that there is a person in the room and adjusts the left-right direction of the airflow in the temperature difference reduction modes 1 to 3 so that there is no person. As a result, when the temperature difference reduction modes 1 to 3 are executed, the high-speed airflow does not directly hit the person, and the comfort of the person is improved.
  • the air conditioning system 1000 may operate as follows. In the flowchart shown in FIG. 15, if the person detecting means 56 detects a person in S202, the process may proceed to S116, and if no person is detected, the process may proceed to S112. In this case, when a person is present in the room, the temperature difference elimination modes 1 to 3 are not executed. As a result, when the temperature difference reduction modes 1 to 3 are executed, it is more certain that the high-speed airflow does not directly hit the person, and the comfort of the person is improved.
  • Embodiment 3 Embodiment 3 of the present disclosure will be described with reference to FIGS. 17 and 18.
  • the air conditioning system 1000 according to the present embodiment will be described focusing on the differences from the first embodiment.
  • the configuration in which the description is omitted is the same as that in the first embodiment.
  • FIG. 17 is a diagram showing the configuration of the control means 50 in the present embodiment.
  • the control means 50 in the present embodiment includes an entry prediction means 57 for predicting the entry of a person.
  • the room entry prediction means 57 can communicate with, for example, a smartphone or a wearable terminal owned by a person, and detects the position of a person who is not in the room where at least the indoor unit 100 is installed by using GPS (trademark registration) or the like. do. Further, from the time change of the detected position of the person, it is predicted that the person will enter the room in which the indoor unit 100 is installed.
  • GPS trademark registration
  • the room entry prediction means 57 detects the position of a person at a predetermined time interval (for example, 5 minutes). At this time, when the person is within a predetermined distance (for example, 5 [km]) from the room where the indoor unit 100 is installed and is approaching the room, the room entry predicting means 57 predicts that the person will enter the room. do. The foreseeable result is transmitted to the operation control means 54 and the storage means 55.
  • FIG. 18 is a flowchart showing the operation of the air conditioning system 1000 according to the present embodiment.
  • the room entry prediction means 57 predicts that a person will enter the room. Specifically, the room entry predictor 57 detects the position of a person at at least two different times, and when the person is at a predetermined distance from the room and is approaching the room over time, the person enters the room. Foresee.
  • the room entry prediction means 57 predicts the entry of a person
  • the process proceeds to S102.
  • the room entry prediction means 57 does not predict the entry of a person, the process of S301 is repeated at a predetermined time interval (for example, 10 minutes).
  • the operation control means 54 stops the operation of the air conditioning system 1000. At this time, the operation control means 54 stops the operations of the compressor 1, the outdoor blower means 3, the expansion valve 4, the indoor blower means 6, and the wind direction adjusting means 7, while at least the temperature measuring means 11 and the temperature difference calculating means 53. Operation continues. After the operation of the air conditioning system 1000 is stopped, the process returns to S103.
  • the air conditioning system 1000 operates in the temperature difference reduction mode 4.
  • the operation control means 54 operates the indoor blower means 6 and the wind direction adjusting means 7.
  • the rotation speed of the indoor fan of the indoor blower means 6 is not particularly limited, and may be, for example, a predetermined constant value, and may be determined according to the distance from the indoor unit 100 to the high ceiling space 300.
  • the wind direction adjusting means 7 is controlled so that the airflow is blown out at least in a direction other than horizontal. In the example of FIG. 4, the wind direction adjusting means 7 is controlled to any of the vertical wind directions 2 to 5.
  • the direction of the wind direction adjusting means 7 may be determined according to the distance between the indoor unit 100 and the high ceiling space 300.
  • the room entry prediction means 57 determines whether a person has entered the room. Specifically, when the person is in front of the indoor unit 100 and within a predetermined distance (for example, 5 [m]) from the indoor unit 100, it is determined that the person has entered the room.
  • a predetermined distance for example, 5 [m]
  • the operation of the air conditioning system 1000 is switched to the operation of the first embodiment shown in FIG. 8 in S306.
  • the target temperature of the air conditioning system 1000 may be, for example, the target temperature when the air conditioning system 1000 is operated in the operation of the previous embodiment 1.
  • the process returns to S103.
  • the air conditioning system 1000 of the present embodiment predicts that a person will enter the room.
  • the air conditioning system 1000 executes the temperature difference reduction mode 3.
  • the air conditioning system 1000 previously mixes the warm air staying in the high ceiling space 300 with the air in the living space 300.
  • the temperature of the air in the living space 300 has already risen when the person returns home, so that the comfort of the person is improved.
  • the operation of the air conditioning system 1000 in the present embodiment with the operation of the air conditioning system 1000 in the second embodiment.
  • the operation of the air conditioning system 1000 is switched to the operation of the second embodiment shown in FIG.
  • the person detecting means 56 may be used to determine whether or not a person has entered the room in S305.

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Abstract

An air-conditioning system according to the present disclosure comprises: an indoor machine; a distance measurement means; a high ceiling detection means; a floor detection means; a temperature measurement means; a temperature difference calculation means for calculating a temperature difference between the temperature of a high ceiling space and the surface temperature of a floor; and a control means for executing control so as to generate a first airflow in accordance with a preset operation condition when the temperature difference calculated by the temperature difference calculation means is less than a first threshold, and to generate a second airflow, which satisfies a condition that the temperature thereof is at least less than that of the first airflow or a condition that a speed component thereof in the vertical direction is larger than that of the first airflow, when the temperature difference is not less than the first threshold.

Description

空調システムAir conditioning system
　本開示は空調システムに関するものである。 This disclosure relates to an air conditioning system.
　特許文献１に、天井の高さと、天井に付随する照明や鴨居の存在を検知し、照明や鴨居を避けるように気流を制御することで室内を効率よく空調する空気調和機が記載されている。 Patent Document 1 describes an air conditioner that efficiently air-conditions a room by detecting the height of the ceiling and the presence of lighting and lintels attached to the ceiling and controlling the airflow so as to avoid the lighting and lintels. ..
特開２０１２－５２６８０号公報Japanese Unexamined Patent Publication No. 2012-52680
　ところで、近年は室内の解放感の向上や、採光用の窓の設置を目的として、天井面のうち一部を高くした高天井を設けるケースが多くなりつつある。このような室内では、冬季に暖房を行っても暖かい空気が高天井付近に集中してしまい、人が生活する空間が思うように暖まらないことがある。結果、人の快適性の低下や、エネルギーの無駄といった課題が生じる。上記課題を解決するためには、高天井の有無と位置を検知し、高天井付近に暖かい空気が集中したときに、それを人が生活する空間に導くことが必要になる。しかしながら特許文献１に記載された空気調和機においては、天井面に付随する照明や鴨居を検出し、それらの障害物をよける気流を発生させることが可能であるものの、高天井を検出し、高天井付近と人が生活する空間で温度差が生じた場合の空調方法は考慮していない。 By the way, in recent years, there are increasing cases of installing a high ceiling with a part of the ceiling surface raised for the purpose of improving the feeling of openness in the room and installing windows for daylighting. In such a room, even if heating is performed in winter, warm air will be concentrated near the high ceiling, and the space where people live may not warm up as expected. As a result, problems such as deterioration of human comfort and waste of energy arise. In order to solve the above problems, it is necessary to detect the presence and position of a high ceiling, and when warm air is concentrated near the high ceiling, guide it to the space where people live. However, in the air conditioner described in Patent Document 1, although it is possible to detect the lighting and the duck that accompany the ceiling surface and generate an air flow that avoids these obstacles, the high ceiling is detected. The air conditioning method when there is a temperature difference between the vicinity of the high ceiling and the space where people live is not considered.
　本開示は、上記のような課題を解決するためになされた。本開示の目的は、天井の一部が高くなっている高天井を設けた室内において、高天井が存在することを確実に検知し、さらに高天井空間と人が生活する空間で温度差が発生したときに、上記温度差を解消できる空調システムを提案するものである。 This disclosure was made to solve the above problems. The object of the present disclosure is to reliably detect the existence of a high ceiling in a room provided with a high ceiling in which a part of the ceiling is raised, and further, a temperature difference occurs between the high ceiling space and the space where people live. When this happens, we propose an air conditioning system that can eliminate the above temperature difference.
　本開示に係る空調システムは、室内機と、室内機から天井までの距離及び室内機から床までの距離を計測する距離計測手段と、距離計測手段が計測した、室内機から天井までの距離に基づき、室内に高さが異なる複数の天井が存在する場合に、複数の天井のうち最も低い天井より高い位置の高天井空間を検知する高天井検知手段と、距離計測手段が計測した、室内機から床までの距離と、室内機から壁までの距離と、に基いて、床を検知する床検知手段と、高天井空間及び床の表面温度を計測する温度計測手段と、温度計測手段が検知した、高天井空間の温度と床の表面温度の温度差を算出する温度差算出手段と、温度差算出手段が算出した温度差が、第１閾値未満の場合あらかじめ定められた運転条件に従って第１気流を発生させ、温度差が第１閾値以上の場合、少なくとも第１気流より温度が低いか、あるいは、上下方向の速度成分が大きいかのいずれかの条件を満たす第２気流を生成する制御を行う制御手段と、を備える。 The air conditioning system according to the present disclosure includes an indoor unit, a distance measuring means for measuring the distance from the indoor unit to the ceiling and the distance from the indoor unit to the floor, and the distance from the indoor unit to the ceiling measured by the distance measuring means. Based on this, when there are multiple ceilings with different heights in the room, a high ceiling detecting means that detects the high ceiling space at a position higher than the lowest ceiling among the multiple ceilings, and an indoor unit measured by the distance measuring means. Based on the distance from the floor to the floor and the distance from the indoor unit to the wall, the floor detecting means for detecting the floor, the temperature measuring means for measuring the surface temperature of the high ceiling space and the floor, and the temperature measuring means detect the floor. When the temperature difference calculated by the temperature difference calculation means for calculating the temperature difference between the temperature of the high ceiling space and the surface temperature of the floor is less than the first threshold value, the first operation condition is determined in advance. Control to generate a second airflow that satisfies either the temperature is at least lower than the first airflow or the velocity component in the vertical direction is large when the temperature difference is equal to or greater than the first threshold value. It is provided with a control means for performing.
　本開示の空調システムは、室内に高天井が存在していることを検知し、さらに高天井付近の空気温度と床付近の空気温度に差が生じたときに、高天井付近の空気と床付近の空気とを混合させることで、上記温度差を解消する。これにより、室内の人の快適性の向上や省エネが達成される。 The air conditioning system of the present disclosure detects the existence of a high ceiling in a room, and when there is a difference between the air temperature near the high ceiling and the air temperature near the floor, the air near the high ceiling and the vicinity of the floor By mixing with the air of the above, the above temperature difference is eliminated. As a result, the comfort of people in the room is improved and energy saving is achieved.
実施の形態１の空調システムの構成を示す図である。It is a figure which shows the structure of the air-conditioning system of Embodiment 1. FIG. 実施の形態１の室内機が設置された室内の図である。It is a figure of the room where the indoor unit of Embodiment 1 is installed. 実施の形態１の室内機の構造を示す図であるIt is a figure which shows the structure of the indoor unit of Embodiment 1. FIG. 実施の形態１の風向調整手段の機能を示す図である。It is a figure which shows the function of the wind direction adjusting means of Embodiment 1. FIG. 実施の形態１の距離計測手段の構造を示す図である。It is a figure which shows the structure of the distance measuring means of Embodiment 1. FIG. 実施の形態１の制御手段の構成を示す図である。It is a figure which shows the structure of the control means of Embodiment 1. FIG. 実施の形態１の距離計測手段の計測結果を示す図である。It is a figure which shows the measurement result of the distance measuring means of Embodiment 1. FIG. 実施の形態１の空調システムの動作例を示すフローチャートである。It is a flowchart which shows the operation example of the air-conditioning system of Embodiment 1. 実施の形態１の温度差低減モードの実施条件を示す図である。It is a figure which shows the implementation condition of the temperature difference reduction mode of Embodiment 1. FIG. 実施の形態１の温度差低減モードの実施条件の詳細を示す図である。It is a figure which shows the detail of the implementation condition of the temperature difference reduction mode of Embodiment 1. FIG. 実施の形態１の運転モードの制御対象と変更値を示す図である。It is a figure which shows the control target and the change value of the operation mode of Embodiment 1. FIG. 実施の形態１の温度差低減モードの機能を示す図である。It is a figure which shows the function of the temperature difference reduction mode of Embodiment 1. FIG. 実施の形態１の温度差低減モードの別の機能を示す図である。It is a figure which shows another function of the temperature difference reduction mode of Embodiment 1. FIG. 実施の形態２の制御手段の構成を示す図である。It is a figure which shows the structure of the control means of Embodiment 2. 実施の形態２の空調システムの動作例を示すフローチャートである。It is a flowchart which shows the operation example of the air-conditioning system of Embodiment 2. 実施の形態２の運転モードの制御対象と変更値を示す図である。It is a figure which shows the control target and the change value of the operation mode of Embodiment 2. 実施の形態３の制御手段の構成を示す図である。It is a figure which shows the structure of the control means of Embodiment 3. FIG. 実施の形態３の空調システムの動作例を示すフローチャートである。It is a flowchart which shows the operation example of the air-conditioning system of Embodiment 3.
　以下、添付の図面を参照して、本開示を実施するための形態について説明する。各図における同一の符号は、同一の部分または相当する部分を示し、当該部分の重複する説明は適宜簡略化または省略する。なお本開示は、以下の実施の形態に限定されるものではなく、その趣旨を逸脱しない範囲において、以下の各実施の形態の構成の種々の変形が含まれ得る。 Hereinafter, a mode for carrying out the present disclosure will be described with reference to the attached drawings. The same reference numerals in the respective figures indicate the same parts or corresponding parts, and duplicate description of the parts will be simplified or omitted as appropriate. It should be noted that the present disclosure is not limited to the following embodiments, and may include various modifications of the configuration of each of the following embodiments without departing from the spirit thereof.
実施の形態１．
　図１は、本実施の形態における空調システム１０００の構成を示す図である。空調システム１０００は、所謂セパレートタイプのヒートポンプ式空調システムである。図１に示すように空調システム１０００は、室内機１００と、室外機１０１と、人が操作を行うための端末７０を有する。室内機１００と室外機１０１とは銅管などの配管で接続され、冷媒回路を構成する。冷媒回路内には例えばＲ３２(ジフルオロメタン)などのＨＦＣ（Ｈｙｄｒｏ　Ｆｌｕｏｒｏ　Ｃａｒｂｏｎｓ）冷媒やＲ２９０（プロパン）などの自然冷媒が循環している。本実施の形態では、冷媒回路内に流れる冷媒の種類は特に限定しない。以下では空調システム１０００の各構成要素の構造及び機能について、高天井空間３００の空気温度と床２０６付近の空気温度とに差が生じやすい暖房運転を中心に説明する。 Embodiment 1.
FIG. 1 is a diagram showing a configuration of an air conditioning system 1000 according to the present embodiment. The air conditioning system 1000 is a so-called separate type heat pump type air conditioning system. As shown in FIG. 1, the air conditioning system 1000 includes an indoor unit 100, an outdoor unit 101, and a terminal 70 for human operation. The indoor unit 100 and the outdoor unit 101 are connected by a pipe such as a copper pipe to form a refrigerant circuit. For example, an HFC (HydroFluoroCarbons) refrigerant such as R32 (difluoromethane) and a natural refrigerant such as R290 (propane) circulate in the refrigerant circuit. In the present embodiment, the type of the refrigerant flowing in the refrigerant circuit is not particularly limited. Hereinafter, the structure and function of each component of the air conditioning system 1000 will be described focusing on the heating operation in which a difference is likely to occur between the air temperature of the high ceiling space 300 and the air temperature near the floor 206.
　室外機１０１は、冷媒を圧縮する圧縮機１と、外気と冷媒との間で熱交換を行う室外熱交換器２と、室外熱交換器２に外気を送る室外送風手段３と、開度可変の膨張弁４と、を有する。圧縮機１と室外熱交換器２、及び室外熱交換器２と膨張弁４とは銅管などで接続される。また室外機１０１は、制御手段５０を有する。制御手段５０は後述するように高天井検知手段５１、床検知手段５２、温度差算出手段５３、記憶手段５４、及び運転制御手段５５を有する。 The outdoor unit 101 includes a compressor 1 that compresses the refrigerant, an outdoor heat exchanger 2 that exchanges heat between the outside air and the refrigerant, an outdoor air blowing means 3 that sends the outside air to the outdoor heat exchanger 2, and a variable opening degree. It has an expansion valve 4 and. The compressor 1 and the outdoor heat exchanger 2 and the outdoor heat exchanger 2 and the expansion valve 4 are connected by a copper tube or the like. Further, the outdoor unit 101 has a control means 50. As will be described later, the control means 50 includes a high ceiling detecting means 51, a floor detecting means 52, a temperature difference calculating means 53, a storage means 54, and an operation control means 55.
　室内機１００は、室内の空気と冷媒との間で熱交換を行う室内熱交換器５と、室内熱交換器５に室内の空気を送る室内送風手段６と、室内機から吹き出される気流の方向を調整する風向調整手段７と、を有する。室内熱交換器５は銅管などで室外機１０１の圧縮機１及び膨張弁４と接続される。また室内機１００には室内の測距を行う距離計測手段１０と、室内の温度分布を計測する温度計測手段１１と、室内機１００に吸い込まれる空気の温度を計測する吸い込み温度計測手段１２と、を有する。なお、室内送風手段６、風向調整手段７、距離計測手段１０、温度計測手段１１、及び吸い込み温度計測手段１２は制御手段５０で制御される。 The indoor unit 100 includes an indoor heat exchanger 5 that exchanges heat between indoor air and a refrigerant, an indoor air blowing means 6 that sends indoor air to the indoor heat exchanger 5, and an air flow blown from the indoor unit. It has a wind direction adjusting means 7 for adjusting the direction. The indoor heat exchanger 5 is connected to the compressor 1 and the expansion valve 4 of the outdoor unit 101 by a copper tube or the like. Further, the indoor unit 100 includes a distance measuring means 10 for measuring the distance in the room, a temperature measuring means 11 for measuring the temperature distribution in the room, and a suction temperature measuring means 12 for measuring the temperature of the air sucked into the indoor unit 100. Have. The indoor air blowing means 6, the wind direction adjusting means 7, the distance measuring means 10, the temperature measuring means 11, and the suction temperature measuring means 12 are controlled by the control means 50.
　圧縮機１は、例えばスクロール圧縮機、ロータリー圧縮機、その他の方式で冷媒を圧縮する装置である。圧縮機１は流入した低圧の冷媒蒸気を圧縮して、高温高圧の冷媒蒸気を吐出する。圧縮機１が吐出した冷媒蒸気は室内機１００の室内熱交換器５に流入する。 The compressor 1 is a device that compresses the refrigerant by, for example, a scroll compressor, a rotary compressor, or another method. The compressor 1 compresses the inflowing low-pressure refrigerant vapor and discharges the high-temperature and high-pressure refrigerant vapor. The refrigerant vapor discharged by the compressor 1 flows into the indoor heat exchanger 5 of the indoor unit 100.
　室内熱交換器５では、室内の空気と冷媒との間で熱交換が行われる。暖房運転時、室内熱交換器５は凝縮器として機能し、流入した高温高圧の冷媒蒸気は凝縮し高圧の液冷媒に変化する。室内熱交換器５から流出した液冷媒は膨張弁４に流入する。 In the indoor heat exchanger 5, heat exchange is performed between the indoor air and the refrigerant. During the heating operation, the indoor heat exchanger 5 functions as a condenser, and the inflowing high-temperature and high-pressure refrigerant vapor is condensed and changed into a high-pressure liquid refrigerant. The liquid refrigerant flowing out of the indoor heat exchanger 5 flows into the expansion valve 4.
　膨張弁４は、開度を連続的に変更可能な減圧装置である。膨張弁４は、室内熱交換器５から流入した液冷媒を減圧し、低圧低温の蒸気－液の二相冷媒に変化させる。膨張弁４から流出した二相冷媒は室外熱交換器２に流入する。 The expansion valve 4 is a pressure reducing device that can continuously change the opening degree. The expansion valve 4 decompresses the liquid refrigerant flowing from the indoor heat exchanger 5 and changes it into a low-pressure low-temperature steam-liquid two-phase refrigerant. The two-phase refrigerant flowing out of the expansion valve 4 flows into the outdoor heat exchanger 2.
　室外熱交換器２では、外気と冷媒との間で熱交換が行われる。暖房運転時、室外熱交換器２は蒸発器として機能し、流入した低温低圧の二相冷媒は蒸発して低圧の冷媒蒸気に変化する。室外熱交換器２から流出した冷媒蒸気は圧縮機１に流入する。 In the outdoor heat exchanger 2, heat exchange is performed between the outside air and the refrigerant. During the heating operation, the outdoor heat exchanger 2 functions as an evaporator, and the inflowing low-temperature low-pressure two-phase refrigerant evaporates and changes to low-pressure refrigerant vapor. The refrigerant vapor flowing out of the outdoor heat exchanger 2 flows into the compressor 1.
　圧縮機１では、流入した低圧の冷媒蒸気を再び高温高圧の冷媒蒸気とし室内熱交換器５に吐出する。このようにして、室内機１００と室外機１０１の間を冷媒が循環する。つまり、空調システム１０００において暖房運転が実行されるとき、冷媒は圧縮機１、室内熱交換器５、膨張弁４、室外熱交換器２の順に通過して循環する。 In the compressor 1, the inflowing low-pressure refrigerant vapor is again converted into high-temperature and high-pressure refrigerant vapor and discharged to the indoor heat exchanger 5. In this way, the refrigerant circulates between the indoor unit 100 and the outdoor unit 101. That is, when the heating operation is executed in the air conditioning system 1000, the refrigerant passes through the compressor 1, the indoor heat exchanger 5, the expansion valve 4, and the outdoor heat exchanger 2 in this order and circulates.
　室外送風手段３は、例えばプロペラファンである。室外送風手段３は、室外熱交換器２の近傍に配置される。室外送風手段２が動作することで、外気が室外機１０１に吸い込まれ、室外熱交換器２を通過した後、室外機１０１から吹き出される。 The outdoor ventilation means 3 is, for example, a propeller fan. The outdoor air blowing means 3 is arranged in the vicinity of the outdoor heat exchanger 2. When the outdoor air blowing means 2 operates, the outside air is sucked into the outdoor unit 101, passes through the outdoor heat exchanger 2, and then blown out from the outdoor unit 101.
　端末７０は、人が空調システム１０００を操作するための遠隔操作端末である。端末７０は、リモコン、スマートフォン、ウェアラブル端末、あるいはスマートスピーカーなどである。端末７０は、人から入力された目標温度、風向設定、時間予約などを受け付けて、空調システム１０００を制御するための信号を運転制御部５５に送信する。 The terminal 70 is a remote control terminal for a person to operate the air conditioning system 1000. The terminal 70 is a remote controller, a smartphone, a wearable terminal, a smart speaker, or the like. The terminal 70 receives a target temperature, a wind direction setting, a time reservation, etc. input from a person, and transmits a signal for controlling the air conditioning system 1000 to the operation control unit 55.
　図２（ａ）、（ｂ）は室内機１００が設置された空調対象の室内の例を表す図である。図２（ａ）、（ｂ）は同一の形状の室内であり、壁２００、２０２、２０４及び２０５と、天井２０１及び２０３と、床２０６とに囲まれた空間である。ここで天井２０１と天井２０３とは高さが異なり、天井２０１の方が天井２０３より低い。また線２０７は天井２０１を水平に延長してなる延長線である。本実施の形態では、壁２０２、天井２０３、壁２０４及び線２０７とで囲まれる空間を高天井空間３００と規定する。高天井空間３００は実際に人が生活する空間でなく、室内の解放感を向上させたり、採光用の窓を設置するための空間である。高天井空間３００は人が生活する空間でないため空調を行う必要はない。しかしながら、空調システム１０００を暖房運転で動作させた場合、暖かく密度の小さい空気が高天井空間３００に滞留する傾向がある。また、壁２００、天井２０１、線２０７、壁２０５、及び床２０６で囲まれる空間を生活空間３０１と規定する。 FIGS. 2A and 2B are diagrams showing an example of an air-conditioned room in which the indoor unit 100 is installed. 2 (a) and 2 (b) are rooms having the same shape, and are spaces surrounded by walls 200, 202, 204 and 205, ceilings 201 and 203, and a floor 206. Here, the heights of the ceiling 201 and the ceiling 203 are different, and the ceiling 201 is lower than the ceiling 203. Further, the line 207 is an extension line formed by horizontally extending the ceiling 201. In the present embodiment, the space surrounded by the wall 202, the ceiling 203, the wall 204, and the line 207 is defined as the high ceiling space 300. The high ceiling space 300 is not a space where people actually live, but a space for improving the feeling of openness in the room and installing a window for daylighting. Since the high ceiling space 300 is not a space where people live, it is not necessary to perform air conditioning. However, when the air conditioning system 1000 is operated in the heating operation, warm and low-density air tends to stay in the high ceiling space 300. Further, the space surrounded by the wall 200, the ceiling 201, the line 207, the wall 205, and the floor 206 is defined as a living space 301.
　図２（ａ）において室内機１００は壁２００に設置されている。また点線Ｌ３０及びＬ４０は、後述する距離計測手段１０の上下方向の角度を、上方向に３０度及び４０度にした場合の超音波の到達経路を示す線である。同様に点線Ｌー６０、Ｌー３０及びＬ―２０は、後述する距離計測手段１０の上下方向の角度を、下方向に６０度、３０度及び２０度にした場合の超音波の到達経路を示す線である。 In FIG. 2A, the indoor unit 100 is installed on the wall 200. Further, the dotted lines L30 and L40 are lines showing the arrival path of the ultrasonic wave when the vertical angle of the distance measuring means 10 described later is set to 30 degrees and 40 degrees in the upward direction. Similarly, the dotted lines L-60, L-30 and L-20 indicate the arrival path of ultrasonic waves when the vertical angle of the distance measuring means 10 described later is set to 60 degrees, 30 degrees and 20 degrees downward. It is a line to show.
　また本開示においては室内機１００の設置位置は特に限定しない。室内機１００は、図２（ａ）では壁２００に設置されているが、図２（ｂ）のように壁２０５に設置されていてもよい。この場合、図２（ａ）と図２（ｂ）に示す例では、高天井空間３００と室内機１００の相対的な位置が異なる。さら室内機１００はに図２（ｃ）のように、壁面に埋め込まれる壁埋ビルトイン型であってもよく、床２０６上に置かれる床置き型であってもよい。なお、壁埋ビルトイン型や、床置き型の室内機では、吹き出し口が室内機の筐体の正面にある場合も多く、さらに室内機の吹き出し口から上方向に気流を吹き出すことができる場合もある。このような場合でも、以下で説明する空調システム１０００の構造及び動作は同じである。 Further, in this disclosure, the installation position of the indoor unit 100 is not particularly limited. Although the indoor unit 100 is installed on the wall 200 in FIG. 2A, it may be installed on the wall 205 as shown in FIG. 2B. In this case, in the examples shown in FIGS. 2A and 2B, the relative positions of the high ceiling space 300 and the indoor unit 100 are different. Further, the indoor unit 100 may be a wall-embedded built-in type embedded in a wall surface or a floor-standing type placed on the floor 206 as shown in FIG. 2 (c). In the wall-embedded built-in type or floor-standing indoor unit, the outlet is often located in front of the indoor unit housing, and in some cases, the airflow can be blown upward from the outlet of the indoor unit. be. Even in such a case, the structure and operation of the air conditioning system 1000 described below are the same.
　なお本開示においては、上記のような高天井空間３００が存在するならば、室内空間の用途は特に限定しない。例えば、室内機１００を設置する室内は居住用リビングでも、オフィスでも、工場であってもよい。また任意の壁及び天井には、窓、ドア、及び換気口などが取り付けられていてもよい。 In this disclosure, if the high ceiling space 300 as described above exists, the use of the indoor space is not particularly limited. For example, the room in which the indoor unit 100 is installed may be a residential living room, an office, or a factory. Further, windows, doors, ventilation openings and the like may be attached to any wall and ceiling.
　図３は本実施の形態における室内機１００の構造を示す図である。室内機１００は、筐体３０を有する。筐体３０には吸い込み口３１及び吹き出し口３２が設けられている。吸い込み口３１には、吸い込み温度計測手段１２が取り付けられている。吸い込み温度計測手段１２は、例えばサーミスタである。吹き出し口３２には、風向調整手段７が取り付けられている。また、筐体３０内部には室内熱交換器５及び室内送風手段６が収められている。さらに、筐体３０右下部には距離計測手段１０及び温度計測手段１１が取り付けられている。なお距離計測手段１０及び温度計測手段１１の取り付け位置は上記筐体の右下部に限定せず、例えば筐体３０の任意の位置に取り付けてもよいし、筐体３０に埋め込んでもよい。 FIG. 3 is a diagram showing the structure of the indoor unit 100 in the present embodiment. The indoor unit 100 has a housing 30. The housing 30 is provided with a suction port 31 and an outlet 32. A suction temperature measuring means 12 is attached to the suction port 31. The suction temperature measuring means 12 is, for example, a thermistor. A wind direction adjusting means 7 is attached to the outlet 32. Further, the indoor heat exchanger 5 and the indoor air blowing means 6 are housed inside the housing 30. Further, a distance measuring means 10 and a temperature measuring means 11 are attached to the lower right portion of the housing 30. The mounting positions of the distance measuring means 10 and the temperature measuring means 11 are not limited to the lower right portion of the housing, and may be mounted at any position of the housing 30, or may be embedded in the housing 30.
　室内送風手段６は例えばクロスフローファンである。室内送風手段６は、室内熱交換器５の近傍に配置される。室内送風手段６が動作することで、室内の空気が吸い込み口３１から室内機１００に吸い込まれ、室内熱交換器５を通過した後、吹き出し口３２から室内に吹き出される。なお室内送風手段６は、プロペラファン及びシロッコファンなどでもよく、それらを複数配置したものであってもよい。 The indoor ventilation means 6 is, for example, a cross flow fan. The indoor blower means 6 is arranged in the vicinity of the indoor heat exchanger 5. When the indoor air blowing means 6 operates, the air in the room is sucked into the indoor unit 100 from the suction port 31, passes through the indoor heat exchanger 5, and then blown out into the room from the outlet 32. The indoor ventilation means 6 may be a propeller fan, a sirocco fan, or the like, or a plurality of them may be arranged.
　風向調整手段７は例えば板状のフラップとベーンから構成される。図３においては、風向調整手段７はフラップ７ａ、７ｂ、７ｃ、及び７ｄと、ベーン７ｅ及び７ｆから構成される。フラップ７ａ、７ｂ、７ｃ、及び７ｄはそれぞれ独立した回動機構を有しており、フラップ７ａ、７ｂ、７ｃ、及び７ｄが回動し角度が変化することで、室内機１００から吹き出される気流の上下方向が変化する。同様にベーン７ｅ及び７ｆもそれぞれ独立した回動機構を有しており、ベーン７ｅ及び７ｆが回動し角度が変化することで、室内機１００から吹き出される気流の左右方向が変化する。 The wind direction adjusting means 7 is composed of, for example, a plate-shaped flap and a vane. In FIG. 3, the wind direction adjusting means 7 is composed of flaps 7a, 7b, 7c, and 7d, and vanes 7e and 7f. The flaps 7a, 7b, 7c, and 7d each have an independent rotation mechanism, and the flaps 7a, 7b, 7c, and 7d rotate to change the angle, so that the airflow blown from the indoor unit 100 is blown out. The vertical direction of is changed. Similarly, the vanes 7e and 7f also have independent rotation mechanisms, and when the vanes 7e and 7f rotate and the angle changes, the left-right direction of the airflow blown from the indoor unit 100 changes.
　図４はフラップ７ａ、７ｂ、７ｃ、及び７ｄの角度の変化を表す図である。図４に示されるように、フラップ７ａ、７ｂ、７ｃ、及び７ｄは水平方向である「上下風向１」から鉛直下方である「上下風向５」までの５段階のうちいずれか１つの状態に制御される。例えば、フラップ７ａ、７ｂ、７ｃ、及び７ｄは「上下風向３」から１段階下がると、「上下風向４」に制御される。これにより、室内機１００から吹き出される気流の上下方向が変化する。なお、図４ではフラップ７ａ、７ｂ、７ｃ、及び７ｄの角度の変化を５段階で示しているが、角度の変化は５段階に限らず、これよりも多くても少なくてもよい。また、図示はしないがベーン７ｅ及び７ｆの角度も同様にして左右方向に変化する。 FIG. 4 is a diagram showing changes in the angles of the flaps 7a, 7b, 7c, and 7d. As shown in FIG. 4, the flaps 7a, 7b, 7c, and 7d are controlled to any one of five stages from the horizontal "vertical wind direction 1" to the vertically downward "vertical wind direction 5". Will be done. For example, the flaps 7a, 7b, 7c, and 7d are controlled to the "up and down wind direction 4" when the flaps 7a, 7b, 7c, and 7d are lowered by one step from the "up and down wind direction 3". As a result, the vertical direction of the airflow blown from the indoor unit 100 changes. Although the change in the angle of the flaps 7a, 7b, 7c, and 7d is shown in 5 steps in FIG. 4, the change in the angle is not limited to the 5 steps and may be more or less than this. Although not shown, the angles of the vanes 7e and 7f also change in the left-right direction in the same manner.
　以上のような室内機１００において、室内送風手段６が動作することで、吸い込み口３１から室内の空気が吸い込まれ、室内熱交換器５によって空気が加熱される。加熱された空気は吹き出し口３２から吹き出され、その風向は風向調整手段７によって調整される。これにより室内の空気の温度が調整され、暖房運転による空気調和が行われる。 In the indoor unit 100 as described above, when the indoor air blowing means 6 operates, the indoor air is sucked from the suction port 31, and the air is heated by the indoor heat exchanger 5. The heated air is blown out from the outlet 32, and the wind direction thereof is adjusted by the wind direction adjusting means 7. As a result, the temperature of the air in the room is adjusted, and air conditioning is performed by the heating operation.
　なお吸い込み口３１及び吹き出し口３２の位置は図３に示した例に限らない。例えば吸い込み口３１は筐体３０の下部あるいは側部に設けられていてもよい。同様に吹き出し口３２は筐体３０の上部あるいは側部に設けられていてもよい。さらに、吸い込み口３１及び吹き出し口３２の形状や数は任意としてよく、例えば円形の吸い込み口を筐体３０の側部両方に設けてもよいし、大きさの異なる複数の吹き出し口を筐体３０の下部に並べて設けてもよい。なお、室内熱交換器５、室内送風手段６、及び風向調整手段７の形状や配置は、吸い込み口３１及び吹き出し口３２の位置や形状に応じて適宜変更される。 The positions of the suction port 31 and the outlet 32 are not limited to the example shown in FIG. For example, the suction port 31 may be provided at the lower portion or the side portion of the housing 30. Similarly, the outlet 32 may be provided on the upper portion or the side portion of the housing 30. Further, the shape and number of the suction port 31 and the outlet 32 may be arbitrary. For example, circular suction ports may be provided on both sides of the housing 30, and a plurality of outlets having different sizes may be provided on the housing 30. It may be provided side by side at the bottom of. The shapes and arrangements of the indoor heat exchanger 5, the indoor blower means 6, and the wind direction adjusting means 7 are appropriately changed according to the positions and shapes of the suction port 31 and the blowout port 32.
　距離計測手段１０は、室内を走査し距離データを取得する。距離計測手段１０は室内機１００を基準として、可能な限り上下方向に広い角度で測距を行うことが望ましい。距離計測手段１０が計測した距離データは、高天井検知手段５１、床検知部５２、及び記憶手段５４に送信される。高天井検知手段５１は上記距離データのうち、特に距離計測手段１０が水平より上方向を向いていた時の距離データを分析し、上記距離データが複数の群に分けられるかによって、室内に高天井空間３００が存在するかを検知する。高天井空間３００が存在する場合、高天井検知手段５１はさらに高天井空間３００の範囲を検知する。また床検知手段５２は、距離計測手段１０が計測した距離データのうち、特に距離計測手段１０が水平より下方向を向いていた時の距離データを分析し、距離の増減の傾向によって床２０６の範囲を検知する。高天井検知手段５１及び床検知手段５２の距離データの分析方法の詳細については後述する。 The distance measuring means 10 scans the room and acquires distance data. It is desirable that the distance measuring means 10 measures the distance at a wide angle in the vertical direction as much as possible with the indoor unit 100 as a reference. The distance data measured by the distance measuring means 10 is transmitted to the high ceiling detecting means 51, the floor detecting unit 52, and the storage means 54. Among the distance data, the high ceiling detecting means 51 analyzes the distance data when the distance measuring means 10 is facing upward from the horizontal, and depending on whether the distance data is divided into a plurality of groups, the height is high indoors. Detects whether the ceiling space 300 exists. When the high ceiling space 300 exists, the high ceiling detecting means 51 further detects the range of the high ceiling space 300. Further, the floor detecting means 52 analyzes the distance data measured by the distance measuring means 10 especially when the distance measuring means 10 is facing downward from the horizontal, and the floor 206 is determined by the tendency of the distance to increase or decrease. Detect the range. The details of the distance data analysis method of the high ceiling detecting means 51 and the floor detecting means 52 will be described later.
　距離計測手段１０は、例えば超音波式距離センサ（以下超音波センサと記載）と駆動機構から構成される。超音波センサは、特定の方向に超音波パルスを放出し、壁や天井等に当たり反射した反射波を受信する。超音波パルスを送信してから受信するまでの時間と音速とを乗じ、さらに２で除することで超音波センサから壁や天井までの距離を取得する。なお、距離計測手段１０はレーザー式距離センサあるいは赤外線式距離センサと駆動機構から構成されていてもよい。 The distance measuring means 10 is composed of, for example, an ultrasonic distance sensor (hereinafter referred to as an ultrasonic sensor) and a drive mechanism. An ultrasonic sensor emits an ultrasonic pulse in a specific direction and receives a reflected wave that hits a wall, ceiling, or the like and is reflected. The distance from the ultrasonic sensor to the wall or ceiling is obtained by multiplying the time from the transmission of the ultrasonic pulse to the reception and the speed of sound and dividing by 2. The distance measuring means 10 may be composed of a laser type distance sensor or an infrared type distance sensor and a drive mechanism.
　超音波センサは、駆動機構により少なくとも上下方向に回動可能である。駆動機構は例えばステッピングモータであり、モータ軸の方向は水平であり、超音波センサは支持部材を介してモータ軸に取り付けられている。図５は駆動機構の一例を模式的に示したものである。図５においては、モータ本体２１から延びるモータ軸２２に支持部材２３が取り付けられており、支持部材２３に超音波センサ２４が取り付けられている。このような駆動機構により、超音波センサ２４は上下方向に回動する。 The ultrasonic sensor can be rotated at least in the vertical direction by the drive mechanism. The drive mechanism is, for example, a stepping motor, the direction of the motor shaft is horizontal, and an ultrasonic sensor is attached to the motor shaft via a support member. FIG. 5 schematically shows an example of the drive mechanism. In FIG. 5, a support member 23 is attached to a motor shaft 22 extending from a motor main body 21, and an ultrasonic sensor 24 is attached to the support member 23. By such a drive mechanism, the ultrasonic sensor 24 rotates in the vertical direction.
　なお図５に示す距離計測手段１０の構成において、ステッピングモータをもう一つ追加すれば超音波センサを上下左右方向に回動できる。超音波センサが上下左右方向に回動可能であれば、室内に高天井空間３００が存在するかをより確実に検知でき望ましい。以下では、超音波センサは上下左右方向に回動可能であるとして説明を行う。 In the configuration of the distance measuring means 10 shown in FIG. 5, the ultrasonic sensor can be rotated in the vertical and horizontal directions by adding another stepping motor. If the ultrasonic sensor can rotate in the vertical and horizontal directions, it is desirable that the presence of the high ceiling space 300 in the room can be detected more reliably. Hereinafter, the ultrasonic sensor will be described as being rotatable in the vertical and horizontal directions.
　温度計測手段１１は、室内を走査し床、壁及び天井の温度分布を計測する。温度計測手段１１は、少なくとも床２０６と、高天井空間３００を構成する天井２０３や壁２０４を含む範囲の温度を計測する。なお温度計測手段１１が壁２０４の温度を計測する場合、できるだけ高い位置の温度を計測することが望ましい。これは後述する温度差算出手段５３が、室内の上下方向の温度差をより確実に算出できるようにするためである。このとき天井２０３や壁２０４の温度は、概ね高天井空間３００の空気温度に等しく、床２０６の温度は、概ね床２０６付近の空気の温度に等しいと考えられる。温度計測手段１１は計測した温度分布を温度差算出手段５３及び記憶手段５４に送信する。温度差算出手段５３は、高天井空間３００と床２０６との温度差を算出する。 The temperature measuring means 11 scans the room and measures the temperature distribution of the floor, the wall, and the ceiling. The temperature measuring means 11 measures the temperature in a range including at least the floor 206 and the ceiling 203 and the wall 204 constituting the high ceiling space 300. When the temperature measuring means 11 measures the temperature of the wall 204, it is desirable to measure the temperature at the highest possible position. This is to enable the temperature difference calculating means 53, which will be described later, to more reliably calculate the temperature difference in the vertical direction in the room. At this time, it is considered that the temperature of the ceiling 203 and the wall 204 is substantially equal to the air temperature of the high ceiling space 300, and the temperature of the floor 206 is substantially equal to the temperature of the air near the floor 206. The temperature measuring means 11 transmits the measured temperature distribution to the temperature difference calculating means 53 and the storage means 54. The temperature difference calculating means 53 calculates the temperature difference between the high ceiling space 300 and the floor 206.
　温度計測手段１１は、例えば赤外線センサを格子状に配置したサーモパイルと駆動機構から構成される。サーモパイルは床、壁、天井から放射される赤外線に基いて温度を計測する。なお、温度計測手段１１は非冷却赤外線イメージセンサ等と駆動機構から構成されていてもよい。 The temperature measuring means 11 is composed of, for example, a thermopile in which infrared sensors are arranged in a grid pattern and a drive mechanism. Thermopile measures temperature based on infrared rays emitted from floors, walls, and ceilings. The temperature measuring means 11 may be composed of an uncooled infrared image sensor or the like and a drive mechanism.
　温度計測手段１１の駆動機構は、図５に示す距離計測手段１０の駆動機構と同等の機構でよく、さらに距離計測手段１０と温度計測手段１１とは一つの駆動機構を共有してもよい。図２（ａ）、（ｂ）及び図３では、距離計測手段１０と温度計測手段１１とが一つの駆動機構で駆動するとして例示している。以下では、距離計測手段１０と温度計測手段１１とが一つの上下左右に駆動可能な駆動機構を共有するとして説明を行う。 The drive mechanism of the temperature measuring means 11 may be the same mechanism as the driving mechanism of the distance measuring means 10 shown in FIG. 5, and the distance measuring means 10 and the temperature measuring means 11 may share one driving mechanism. In FIGS. 2A, 2B and 3, the distance measuring means 10 and the temperature measuring means 11 are illustrated as being driven by one driving mechanism. Hereinafter, it will be described that the distance measuring means 10 and the temperature measuring means 11 share one drive mechanism that can be driven vertically and horizontally.
　吸い込み温度計測手段１２は、室内機１００において、吸い込み口３１から室内熱交換器５の間に取り付けられる。吸い込み温度計測手段１２は、吸い込み口３１から吸い込まれる室内の空気の温度を計測する。吸い込み温度計測手段１２は計測した温度を記憶手段５４及び運転制御手段５５に送信する。 The suction temperature measuring means 12 is attached between the suction port 31 and the indoor heat exchanger 5 in the indoor unit 100. The suction temperature measuring means 12 measures the temperature of the air in the room sucked from the suction port 31. The suction temperature measuring means 12 transmits the measured temperature to the storage means 54 and the operation control means 55.
　制御手段５０は、例えばＣＰＵ（Ｃｅｎｔｒａｌ　Ｐｒｏｃｅｓｓｉｉｉｎｇ　Ｕｎｉｉｉｔ）、制御プログラムを格納したＲＯＭ（Ｒｅａｄ　Ｏｎｌｙ　Ｍｅｍｏｒｙ）等の記憶媒体、ＲＡＭ（Ｒａｎｄｏｍ　Ａｃｃｅｓｓ　Ｍｅｍｏｒｙ）等の作業用メモリ、およびＣＰＵ、ＲＯＭ，及びＲＡＭ間で信号をやり取りする信号回路から構成される。 The control means 50 is, for example, between a CPU (Central Processing Unit), a storage medium such as a ROM (Read Only Memory) storing a control program, a working memory such as a RAM (Random Access Memory), and a CPU, ROM, and RAM. It consists of a signal circuit that exchanges signals.
　さらに制御手段５０は、外部のクラウドサーバと通信を行うための通信手段を備えていてもよい。この場合制御手段５０は上記通信手段を介して、各種情報をクラウドサーバとの間で送受信することができる。具体的にはクラウドサーバから制御プログラムの更新データを受信したり、空調システム１０００の運転履歴をクラウドサーバへ送信する。 Further, the control means 50 may be provided with a communication means for communicating with an external cloud server. In this case, the control means 50 can send and receive various information to and from the cloud server via the communication means. Specifically, the update data of the control program is received from the cloud server, and the operation history of the air conditioning system 1000 is transmitted to the cloud server.
　制御手段５０は、距離計測手段１０、温度計測手段１１、及び吸い込み温度計測手段１２の計測結果と、端末７０への人の入力結果を受信する。制御手段５０には空調システム１０００の機能を発揮させるための制御プログラムが記憶されており、上記受信結果と、上記制御プラグラムを元に圧縮機１、室外送風手段３、膨張弁４、室内送風手段６、及び風向調整手段７を動作させるための指令を発する。 The control means 50 receives the measurement results of the distance measuring means 10, the temperature measuring means 11, and the suction temperature measuring means 12, and the input result of a person to the terminal 70. The control means 50 stores a control program for exerting the functions of the air conditioning system 1000, and based on the reception result and the control program, the compressor 1, the outdoor air blowing means 3, the expansion valve 4, and the indoor blowing means are stored. 6 and a command for operating the wind direction adjusting means 7 are issued.
　図６は制御手段５０の構成を示す図である。制御手段５０は、高天井検知手段５１、床検知手段５２、温度差算出手段５３、記憶手段５４、及び運転制御手段５５を有する。 FIG. 6 is a diagram showing the configuration of the control means 50. The control means 50 includes a high ceiling detecting means 51, a floor detecting means 52, a temperature difference calculating means 53, a storage means 54, and an operation control means 55.
　高天井検知手段５１は、距離計測手段１０が計測した距離データをもとに、高天井空間３００が存在するかを検知し、高天井空間３００が存在する場合、さらにその範囲を検知する。高天井検知手段５１は上記処理の結果を温度差算出部５３、記憶手段５４及び運転制御部５５に送信する。 The high ceiling detecting means 51 detects whether or not the high ceiling space 300 exists based on the distance data measured by the distance measuring means 10, and if the high ceiling space 300 exists, further detects the range thereof. The high ceiling detecting means 51 transmits the result of the above processing to the temperature difference calculating unit 53, the storage means 54, and the operation control unit 55.
　高天井検知手段５１は例えば以下の方法で高天井空間３００が存在するかを検知する。高天井検知手段５１は、まず距離計測手段１０が計測した距離データのうち、距離計測手段１０の上下方向角度が上方向であったときの距離データを抽出する。ここで距離計測手段１０の上下方向角度が上方向とは水平方向より上を意味する。高天井検知手段５１は抽出したデータについて、有意に異なるデータ群が存在するか否かによって、高天井空間３００が存在するかを検知する。 The high ceiling detecting means 51 detects whether or not the high ceiling space 300 exists by, for example, the following method. The high ceiling detecting means 51 first extracts the distance data measured by the distance measuring means 10 when the vertical angle of the distance measuring means 10 is upward. Here, the vertical angle of the distance measuring means 10 is upward means above the horizontal direction. The high ceiling detecting means 51 detects whether or not the high ceiling space 300 exists in the extracted data depending on whether or not a significantly different data group exists.
　図７（ａ）、（ｂ）は距離計測手段１０が計測した距離データのうち、距離計測手段１０の上下方向角度が上方向であったときの距離データを抽出した一例である。図７（ａ）、（ｂ）で距離計測手段１０の左右方向角度が０度とは室内機１００の正面方向を意味する。図７（ａ）に示す例では、距離計測手段１０の上下方向角度が３０度以下の場合は距離が大きく、上下方向角度が３０度より大きい場合は距離が小さい。これは図２（ａ）に示すように、距離計測手段１０の上下方向角度が３０度の場合は、距離計測手段１０は線Ｌ３０が示すように室内機１００から壁２０４までの距離を計測し、上下方向角度が３０度より大きい場合は線Ｌ４０が示すように天井２０１までの距離を計測するからである。高天井空間３００が存在する場合、このように距離計測手段１０の上下方向角度の変化に対して、距離データが有意に異なる群に分けられる。このようにして、高天井検知手段５１は高天井空間３００が存在すると検知する。 FIGS. 7A and 7B are examples of extracting the distance data measured by the distance measuring means 10 when the vertical angle of the distance measuring means 10 is upward. In FIGS. 7A and 7B, the left-right angle of the distance measuring means 10 of 0 degrees means the front direction of the indoor unit 100. In the example shown in FIG. 7A, the distance is large when the vertical angle of the distance measuring means 10 is 30 degrees or less, and the distance is small when the vertical angle is larger than 30 degrees. As shown in FIG. 2A, when the vertical angle of the distance measuring means 10 is 30 degrees, the distance measuring means 10 measures the distance from the indoor unit 100 to the wall 204 as shown by the line L30. This is because when the vertical angle is larger than 30 degrees, the distance to the ceiling 201 is measured as shown by the line L40. When the high ceiling space 300 exists, the distance data can be divided into groups that are significantly different from the change in the vertical angle of the distance measuring means 10 in this way. In this way, the high ceiling detecting means 51 detects that the high ceiling space 300 exists.
　また図７（ｂ）は図２（ｂ）のように室内機１００の上方に高天井空間３００がある場合の、距離計測手段１０が計測した距離データを一部抽出した例である。なお図７（ａ）、（ｂ）において距離計測手段１０の左右方向角度と上下方向角度は、０度から８０度の範囲で１０度刻みで変化しているが、これは距離計測手段１０の計測範囲及び計測間隔を限定するものではない。 Further, FIG. 7B is an example of partially extracting the distance data measured by the distance measuring means 10 when the high ceiling space 300 is above the indoor unit 100 as shown in FIG. 2B. In FIGS. 7A and 7B, the horizontal angle and the vertical angle of the distance measuring means 10 change in a range of 0 to 80 degrees in 10 degree increments, which is the distance measuring means 10. It does not limit the measurement range and measurement interval.
　なお距離計測手段１０が計測した距離データを、有意な複数の群に分けることができるかの基準は任意に設定してよい。例えば、図７（ａ）、（ｂ）に示す距離データを値の大きなものから順に並べた場合に、上からＮ(ある整数)番目の距離データと、Ｎ＋１番目の距離データの間に、所定の値（例えば１００［ｃｍ］）以上の減少があったとき、有意な複数の群に分けることができるとしてもよい。 The criteria for whether the distance data measured by the distance measuring means 10 can be divided into a plurality of significant groups may be arbitrarily set. For example, when the distance data shown in FIGS. 7 (a) and 7 (b) are arranged in order from the one with the largest value, a predetermined distance is specified between the N (integer) th distance data and the N + 1th distance data from the top. When there is a decrease of the value of (for example, 100 [cm]) or more, it may be possible to divide into a plurality of significant groups.
　なお距離計測手段１０の誤計測により、極端に大きいあるいは小さい距離データや、室内機１００から高天井空間３００までの距離と、室内機１００から天井２０１までの距離の中間的な距離データが計測される可能性がある。この場合、高天井空間３００の存在の有無を見誤る虞がある。誤計測の影響を低減するため、高天井検知手段５１は例えば下記のような方法により距離データを選別してもよい。図７（ａ）、（ｂ）のように抽出された距離データのうちある一つの距離データを選択し、その距離データとの差が所定の値（例えば５０［ｃｍ］）以内の別の距離データが存在しない場合、選択された距離データは誤計測によるものと見做す。誤計測によるものと見做された距離データは除去され、それ以外の距離データに対し、上記の方法で有意な複数の群に分けることができるかを判断する。 Due to the erroneous measurement of the distance measuring means 10, extremely large or small distance data and intermediate distance data between the distance from the indoor unit 100 to the high ceiling space 300 and the distance from the indoor unit 100 to the ceiling 201 are measured. There is a possibility. In this case, there is a risk of mistaking the existence of the high ceiling space 300. In order to reduce the influence of erroneous measurement, the high ceiling detecting means 51 may select the distance data by, for example, the following method. Select one of the distance data extracted as shown in FIGS. 7A and 7B, and another distance within a predetermined value (for example, 50 [cm]) from the distance data. In the absence of data, the selected distance data is considered to be due to erroneous measurement. The distance data considered to be due to erroneous measurement is removed, and it is determined whether the other distance data can be divided into a plurality of significant groups by the above method.
　なお、上記説明した方法は高天井検知手段５１が高天井空間３００の有無を検知する方法の一例であり、高天井検知手段５１はこれ以外の方法で高天井空間３００の有無を検知してもよい。例えば、距離データから床面の段差の有無を検知する方法が公知技術として開示されているが、同様の方法を空調システム１０００に適用することでも高天井空間３００の有無を検知することは可能である。 The method described above is an example of a method in which the high ceiling detecting means 51 detects the presence or absence of the high ceiling space 300, and the high ceiling detecting means 51 may detect the presence or absence of the high ceiling space 300 by any other method. good. For example, a method of detecting the presence or absence of a step on the floor surface from distance data is disclosed as a known technique, but it is also possible to detect the presence or absence of a high ceiling space 300 by applying the same method to the air conditioning system 1000. be.
　さらに高天井検知手段５１は、高天井空間３００の左右方向の範囲を検知する。具体的には、高天井検知手段５１は室内機１００から見た場合の天井２０１と高天井空間３００の境目までの距離と、室内機１００から壁２０５までの距離とから高天井空間３００の範囲を検知する。まず、高天井検知手段５１は左右の各方向において、下記計算式（ｉ）により、室内機１００から天井２０１と高天井空間３００の境目までの距離を算出する。

Ｄ×ｃｏｓα・・・（ｉ）

ここでαは天井２０１と高天井空間３００とが切り替わった直後の距離計測手段１０の上下方向の角度であり、図７（ａ）では４０度である。またＤはその場合の距離データである。図７（ａ）において距離計測手段１０の左右方向角度が０度の場合は、計算式（ｉ）の計算結果は、１３３［ｃｍ］（１７５×ｃｏｓ４０°）である。この場合、高天井検知手段５１は室内機１００の正面方向において、室内機１００から天井２０１と高天井空間３００の境目までの距離は１３３［ｃｍ］以上であると算出する。 Further, the high ceiling detecting means 51 detects a range of the high ceiling space 300 in the left-right direction. Specifically, the high ceiling detecting means 51 ranges from the distance from the indoor unit 100 to the boundary between the ceiling 201 and the high ceiling space 300 and the distance from the indoor unit 100 to the wall 205 to the high ceiling space 300. Is detected. First, the high ceiling detecting means 51 calculates the distance from the indoor unit 100 to the boundary between the ceiling 201 and the high ceiling space 300 in each of the left and right directions by the following calculation formula (i).

D × cosα ・ ・ ・ (i)

Here, α is the vertical angle of the distance measuring means 10 immediately after the ceiling 201 and the high ceiling space 300 are switched, and is 40 degrees in FIG. 7A. Further, D is the distance data in that case. In FIG. 7A, when the angle in the left-right direction of the distance measuring means 10 is 0 degrees, the calculation result of the calculation formula (i) is 133 [cm] (175 × cos40 °). In this case, the high ceiling detecting means 51 calculates that the distance from the indoor unit 100 to the boundary between the ceiling 201 and the high ceiling space 300 is 133 [cm] or more in the front direction of the indoor unit 100.
　室内機１００の正面方向以外の方向についても、同様の方法で天井２０１と高天井空間３００の境目までの距離を算出する。なお、上記方法では厳密には天井２０１と高天井空間３００の境目のやや手前までの距離を算出するので、上記計算結果に所定の値（例えば３０［ｃｍ］）を足した値を天井２０１と高天井空間３００の境目までの距離としてもよい。 For directions other than the front direction of the indoor unit 100, the distance to the boundary between the ceiling 201 and the high ceiling space 300 is calculated by the same method. Strictly speaking, in the above method, the distance to a little before the boundary between the ceiling 201 and the high ceiling space 300 is calculated. Therefore, the value obtained by adding a predetermined value (for example, 30 [cm]) to the above calculation result is referred to as the ceiling 201. It may be the distance to the boundary of the high ceiling space 300.
　高天井検知部５１は、さらに距離計測手段１０の上下方向角度が０度であった場合の距離データから、室内機１００から壁２０５までの距離を取得する。図７（ａ）では５２５［ｃｍ］である。高天井検知部５１は、上記壁２０５までの距離から、上記天井２０１と高天井空間３００の境目までの距離を減ずることによって高天井空間３００の範囲を検知する。 The high ceiling detection unit 51 further acquires the distance from the indoor unit 100 to the wall 205 from the distance data when the vertical angle of the distance measuring means 10 is 0 degrees. In FIG. 7A, it is 525 [cm]. The high ceiling detection unit 51 detects the range of the high ceiling space 300 by reducing the distance from the distance to the wall 205 to the boundary between the ceiling 201 and the high ceiling space 300.
　なお、高天井検知手段５１が高天井空間３００の範囲を検知する方法についても、上記説明した以外の方法を用いることができる。例えば、距離データから床面の凹部を検出しその大きさを検知する方法が公知技術として開示されている。これと同様の方法を空調システム１０００に適用することで、高天井空間３００の範囲を検知することも可能である。 As a method for the high ceiling detecting means 51 to detect the range of the high ceiling space 300, a method other than that described above can be used. For example, a method of detecting a recess on the floor surface from distance data and detecting the size thereof is disclosed as a known technique. By applying the same method to the air conditioning system 1000, it is possible to detect the range of the high ceiling space 300.
　床検知手段５２は、距離計測手段１０が計測した室内の距離データを基に床２０６と、壁２０５との境界を特定し、床２０６の左右方向の範囲を検知する。具体的には、距離計測手段１０が計測した距離データのうち、距離計測手段１０の上下方向角度が下向きのときの距離データを抽出する。ここで距離計測手段１０の上下方向角度が下方向とは水平方向より下を意味する。床検知手段５２は、左右方向を一定として、距離計測手段１０の角度を下方向から上方向に変更していったときに、室内機１００からの距離が大きくなり続ける範囲を床２０６と検知する。床検知手段５２は、上記処理の結果を温度差算出部５３、記憶手段５４及び運転制御部５５に送信する。 The floor detecting means 52 identifies the boundary between the floor 206 and the wall 205 based on the indoor distance data measured by the distance measuring means 10, and detects the range in the left-right direction of the floor 206. Specifically, among the distance data measured by the distance measuring means 10, the distance data when the vertical angle of the distance measuring means 10 is downward is extracted. Here, the downward angle of the distance measuring means 10 in the vertical direction means that the angle is lower than the horizontal direction. The floor detecting means 52 detects the floor 206 as the range in which the distance from the indoor unit 100 continues to increase when the angle of the distance measuring means 10 is changed from the lower direction to the upper direction while keeping the left-right direction constant. .. The floor detecting means 52 transmits the result of the above processing to the temperature difference calculating unit 53, the storage means 54, and the operation control unit 55.
　上記の方法を図２（ａ）の例で説明する。距離計測手段１０の角度が、例えば下方向に６０度から下方向に３０度まで変化するとき、線Ｌ－６０と線Ｌ－３０が示すように室内機１００からの距離は大きくなる。一方、距離計測手段１０の角度が下方向に２０度になると、線Ｌ－２０が示すように、室内機１００からの距離は小さくなり始める。これにより距離計測手段１０から見て、下方向に３０度と、下方向に２０度との間に床２０６と、壁２０５との境界が存在し、少なくとも下方向に３０度の範囲までは床２０６であると検知できる。 The above method will be described with the example of FIG. 2 (a). When the angle of the distance measuring means 10 changes from, for example, 60 degrees downward to 30 degrees downward, the distance from the indoor unit 100 becomes large as shown by the lines L-60 and L-30. On the other hand, when the angle of the distance measuring means 10 becomes 20 degrees downward, the distance from the indoor unit 100 starts to decrease as shown by the line L-20. As a result, when viewed from the distance measuring means 10, there is a boundary between the floor 206 and the wall 205 between 30 degrees downward and 20 degrees downward, and the floor is at least up to a range of 30 degrees downward. It can be detected as 206.
　なお高天井空間３００の有無を検知した場合と同様、距離データを使用して床の範囲を検知する方法は公知技術として開示されている。床検知手段５２は、それらの公知技術を用いて床２０６の範囲を検知してもよい。 As in the case of detecting the presence or absence of the high ceiling space 300, a method of detecting the range of the floor using the distance data is disclosed as a known technique. The floor detecting means 52 may detect the range of the floor 206 by using those known techniques.
　また床検知手段５２は下記の方法で床２０６の範囲を検知してもよい。床検知手段５２は、温度計測手段１１が計測した温度データを基に床２０６の範囲を検知する。一般的な建物において、床の温度分布は、壁の温度分布と傾向が異なることが知られている。例えば、床の温度分布は均一に近くなることが多いが、壁の温度分布は均一となりにくいことが知られている。このような傾向の違いを利用して床を特定している公知技術がある。本実施の形態においても、同様の方法により床２０６の範囲を検知してもよい。 Further, the floor detecting means 52 may detect the range of the floor 206 by the following method. The floor detecting means 52 detects the range of the floor 206 based on the temperature data measured by the temperature measuring means 11. It is known that in a general building, the temperature distribution of the floor differs from the temperature distribution of the wall. For example, it is known that the temperature distribution of the floor is often close to uniform, but the temperature distribution of the wall is difficult to be uniform. There is a known technique for specifying a floor by utilizing such a difference in tendency. Also in this embodiment, the range of the floor 206 may be detected by the same method.
　温度差算出手段５３は、高天井検知手段５１及び床検知手段５２で行われた処理の結果と、温度計測手段１１が計測した温度データとから、高天井空間３００の温度と床２０６の温度を取得する。次いで、上記高天井空間３００の温度から、上記床２０６の温度を減ずることによって室内温度差を算出する。温度差算出手段５３は、算出した室内温度差を記憶手段５４及び運転制御手段５５に送信する。 The temperature difference calculating means 53 determines the temperature of the high ceiling space 300 and the temperature of the floor 206 from the result of the processing performed by the high ceiling detecting means 51 and the floor detecting means 52 and the temperature data measured by the temperature measuring means 11. get. Next, the indoor temperature difference is calculated by reducing the temperature of the floor 206 from the temperature of the high ceiling space 300. The temperature difference calculating means 53 transmits the calculated indoor temperature difference to the storage means 54 and the operation control means 55.
　なお温度計測手段１１が高天井空間３００の温度を、天井２０３や壁２０４の複数の位置で計測しているとき、温度差算出手段５３はその複数の計測結果の平均値あるいは中央値を高天井空間３００の温度としてよい。さらに複数の計測結果から標準偏差を算出し、その標準偏差に基いて決定される条件(例えば、平均値からの差が標準偏差の三倍以上)によって、誤計測と考えられる値を排除し、そのうえで平均値を算出するなどの処理を行ってもよい。なお床２０６の複数の位置での温度の計測結果がある場合、上記処理は床２０６の温度に対しても適用してよい。 When the temperature measuring means 11 measures the temperature of the high ceiling space 300 at a plurality of positions of the ceiling 203 and the wall 204, the temperature difference calculating means 53 sets the average value or the median value of the plurality of measurement results to the high ceiling. It may be the temperature of the space 300. Furthermore, the standard deviation is calculated from multiple measurement results, and the value considered to be an erroneous measurement is excluded by the conditions determined based on the standard deviation (for example, the difference from the average value is three times or more the standard deviation). Then, processing such as calculating the average value may be performed. If there are temperature measurement results at a plurality of positions on the floor 206, the above processing may be applied to the temperature on the floor 206 as well.
　記憶手段５４は、空調システム１０００を動作させるための制御プログラムを記憶している。より具体的には、記憶手段５４は、圧縮機１、室外送風手段３、膨張弁４、室内送風手段６、風向設定手段７、距離計測手段１０、温度計測手段１１、及び吸い込み温度計測手段１２を動作させるプログラムを記憶している。加えて記憶手段５４は、距離計測手段１０、温度計測手段１１、及び吸い込み温度計測手段１２の計測結果と、高天井検知手段５１、床検知手段５２、及び温度差算出手段５３の処理の結果と、端末７０への人の入力結果も記憶している。 The storage means 54 stores a control program for operating the air conditioning system 1000. More specifically, the storage means 54 includes a compressor 1, an outdoor blowing means 3, an expansion valve 4, an indoor blowing means 6, a wind direction setting means 7, a distance measuring means 10, a temperature measuring means 11, and a suction temperature measuring means 12. Remembers the program that runs. In addition, the storage means 54 includes the measurement results of the distance measuring means 10, the temperature measuring means 11, and the suction temperature measuring means 12, and the processing results of the high ceiling detecting means 51, the floor detecting means 52, and the temperature difference calculating means 53. , The input result of the person to the terminal 70 is also stored.
　運転制御手段５５は、空調システム１０００の運転動作全般を制御するために、空調システム１０００を構成する各要素に対し指令を発する。具体的には、運転制御手段５５は圧縮機１、室外送風手段３、膨張弁４、室内送風手段６、風向調整手段７、距離計測手段１０、温度計測手段１１、及び吸い込み温度計測手段１２に対して指令を発する。これにより空調システム１０００を構成する各要素が動作し、空調システム１０００の機能が発揮される。 The operation control means 55 issues a command to each element constituting the air conditioning system 1000 in order to control the overall operation operation of the air conditioning system 1000. Specifically, the operation control means 55 includes a compressor 1, an outdoor blower means 3, an expansion valve 4, an indoor blower means 6, a wind direction adjusting means 7, a distance measuring means 10, a temperature measuring means 11, and a suction temperature measuring means 12. Issue a command to it. As a result, each element constituting the air conditioning system 1000 operates, and the function of the air conditioning system 1000 is exhibited.
　このとき、運転制御手段５５が発する指令の内容は、少なくとも高天井検知手段５１、床検知手段５２、及び温度差算出手段５３の処理の結果と、端末７０への人の入力と、記憶手段５４に記憶された制御プログラムとに基いて決定される。 At this time, the contents of the command issued by the operation control means 55 are at least the processing results of the high ceiling detecting means 51, the floor detecting means 52, and the temperature difference calculating means 53, the input of a person to the terminal 70, and the storage means 54. It is determined based on the control program stored in.
　続いて、空調システム１０００の動作について説明する。図８は空調システム１０００の動作例を表すフローチャートである。なお重複する説明は適宜簡略化或いは省略する。 Next, the operation of the air conditioning system 1000 will be described. FIG. 8 is a flowchart showing an operation example of the air conditioning system 1000. The duplicated explanation will be simplified or omitted as appropriate.
　図８に示される空調システム１０００の動作は、人によって端末７０に暖房運転開始の指令が入力されることで開始される。このとき、人により少なくとも室内空気の温度調整の目標温度が指定される。目標温度は記憶手段５４に記憶される。その後、直ちにＳ１０１が開始される。 The operation of the air conditioning system 1000 shown in FIG. 8 is started when a command for starting the heating operation is input to the terminal 70 by a person. At this time, at least the target temperature for adjusting the temperature of the indoor air is specified by a person. The target temperature is stored in the storage means 54. Then, S101 is started immediately.
　Ｓ１０１では、吸い込み温度計測手段１２が室内機１００に吸い込まれる室内空気の温度を計測する。吸い込み温度計測手段１２が計測した温度は記憶手段５４に記憶される。 In S101, the suction temperature measuring means 12 measures the temperature of the indoor air sucked into the indoor unit 100. The temperature measured by the suction temperature measuring means 12 is stored in the storage means 54.
　Ｓ１０２では、高天井検知手段５１が高天井空間３００の有無を検知し、その範囲を検知する。さらに床検知手段５２が床２０６の範囲を検知する。まず距離計測手段１０が、室内を走査し距離データを取得する。取得された距離データは高天井検知手段５１と床検知手段５２に送信される。 In S102, the high ceiling detecting means 51 detects the presence or absence of the high ceiling space 300 and detects the range thereof. Further, the floor detecting means 52 detects the range of the floor 206. First, the distance measuring means 10 scans the room and acquires distance data. The acquired distance data is transmitted to the high ceiling detecting means 51 and the floor detecting means 52.
　次に高天井検知手段５１は、上記距離データを分析する。具体的には、上記距離データのうち距離計測手段１０の上下方向角度が上向きであった場合のデータを抽出し、そのデータが有意な複数の群に分けられるかで高天井空間３００の有無を検知する。高天井空間３００が存在する場合、高天井検知手段５１は、室内機１００から壁２０５までの距離と、上室内機１００から天井２０１と高天井空間３００の境目までの距離とから、高天井空間３００の範囲も検知する。 Next, the high ceiling detecting means 51 analyzes the above distance data. Specifically, the data when the vertical angle of the distance measuring means 10 is upward is extracted from the above distance data, and the presence or absence of the high ceiling space 300 is determined by whether the data is divided into a significant number of significant groups. Detect. When the high ceiling space 300 exists, the high ceiling detecting means 51 determines the high ceiling space from the distance from the indoor unit 100 to the wall 205 and the distance from the upper indoor unit 100 to the boundary between the ceiling 201 and the high ceiling space 300. It also detects a range of 300.
　なお、Ｓ１０２で室内に高天井空間３００が存在せず単一高さの天井しかない場合でも空調システム１０００は動作を継続する。高天井空間３００が存在する場合と、存在しない場合とでは、動作に共通する部分があるため以下説明は必要な部分についてのみ行う。 In S102, the air conditioning system 1000 continues to operate even when the high ceiling space 300 does not exist in the room and there is only a ceiling of a single height. Since there are parts that are common to the operation depending on whether the high ceiling space 300 exists or not, the following description will be given only to the necessary parts.
　続いて床検知手段５２は、床２０６の範囲を検知する。床検知手段５２は、距離計測手段１０が計測した距離データから床２０６の範囲を特定する。具体的には、距離計測手段１０の上下方向角度が下方向であった時のデータを抽出し、上下方向角度を上方向に変更していったときに、室内機１００からの距離が増加し続ける範囲を床２０６だと検知する。高天井検知手段５１と床検知手段５２の処理の結果は温度差算出手段５３、記憶手段５４及び運転制御手段５５に送信される。 Subsequently, the floor detecting means 52 detects the range of the floor 206. The floor detecting means 52 specifies the range of the floor 206 from the distance data measured by the distance measuring means 10. Specifically, when the data when the vertical angle of the distance measuring means 10 is downward is extracted and the vertical angle is changed upward, the distance from the indoor unit 100 increases. The range to be continued is detected as the floor 206. The processing results of the high ceiling detecting means 51 and the floor detecting means 52 are transmitted to the temperature difference calculating means 53, the storage means 54, and the operation control means 55.
　Ｓ１０３では、温度計測手段１１は室内を走査し温度分布を計測する。温度計測手段１１は、少なくとも高天井空間３００と床２０６の温度を計測する。温度計測手段１１が計測した温度データは温度差算出手段５３、記憶手段５４、及び運転制御手段５５に送信される。 In S103, the temperature measuring means 11 scans the room and measures the temperature distribution. The temperature measuring means 11 measures at least the temperature of the high ceiling space 300 and the floor 206. The temperature data measured by the temperature measuring means 11 is transmitted to the temperature difference calculating means 53, the storage means 54, and the operation control means 55.
　なお高天井空間３００が存在しない場合、温度計測手段１１は天井の温度を計測する。後述するＳ１１１などの空調システム１０００の動作で、高天井空間３００の温度を用いる場合には、代わりに上記天井の温度を用いる。 If the high ceiling space 300 does not exist, the temperature measuring means 11 measures the temperature of the ceiling. When the temperature of the high ceiling space 300 is used in the operation of the air conditioning system 1000 such as S111 described later, the temperature of the ceiling is used instead.
　Ｓ１０４では温度差算出手段５３が、高天井空間３００と床２０６の温度差である室内温度差を算出する。温度差算出手段５３は、高天井検知手段５１及び床検知手段５２の処理の結果と、温度計測手段１１の計測結果から、高天井空間３００及び床２０６の温度を抽出する。温度差算出手段５３は抽出した高天井空間３００の温度から床２０６の温度を減じることで、室内温度差を算出する。算出された室内温度差は、記憶手段５４及び運転制御手段５５に送信される。 In S104, the temperature difference calculating means 53 calculates the indoor temperature difference, which is the temperature difference between the high ceiling space 300 and the floor 206. The temperature difference calculating means 53 extracts the temperatures of the high ceiling space 300 and the floor 206 from the processing results of the high ceiling detecting means 51 and the floor detecting means 52 and the measurement results of the temperature measuring means 11. The temperature difference calculating means 53 calculates the indoor temperature difference by subtracting the temperature of the floor 206 from the temperature of the extracted high ceiling space 300. The calculated indoor temperature difference is transmitted to the storage means 54 and the operation control means 55.
　なお室内に高天井空間３００が存在しない場合、天井の温度から床の温度を減じることで室内温度差を算出する。後述するＳ１１２などで、高天井空間３００が存在する場合の室内温度差と、存在しない場合の室内温度差とは、空調システム１０００の動作上区別はされない。 If the high ceiling space 300 does not exist in the room, the room temperature difference is calculated by subtracting the floor temperature from the ceiling temperature. In S112 or the like described later, the indoor temperature difference when the high ceiling space 300 is present and the indoor temperature difference when the high ceiling space 300 is not present are not distinguished from each other in terms of the operation of the air conditioning system 1000.
　Ｓ１０５では、運転制御手段５５が室内の温調が必要か判断する。まず吸い込み温度計測手段１２が室内機１００に吸い込まれる室内の空気の温度を計測する。計測された温度は記憶手段５４及び運転制御手段５５に送信される。次に運転制御手段５５は、記憶手段５４を参照し、スタート時に設定された目標温度とＳ１０１で計測された室内空気の温度を比較する。室内空気の温度が目標温度未満であれば、運転制御手段５５は温調が必要と判断し、Ｓ１０６に進む。一方、室内空気の温度が目標温度以上であれば、運転制御手段５５は温調が必要ないと判断し、Ｓ１０７に進む。 In S105, the operation control means 55 determines whether indoor temperature control is necessary. First, the suction temperature measuring means 12 measures the temperature of the air in the room sucked into the indoor unit 100. The measured temperature is transmitted to the storage means 54 and the operation control means 55. Next, the operation control means 55 refers to the storage means 54 and compares the target temperature set at the start with the temperature of the indoor air measured in S101. If the temperature of the indoor air is lower than the target temperature, the operation control means 55 determines that temperature control is necessary, and proceeds to S106. On the other hand, if the temperature of the indoor air is equal to or higher than the target temperature, the operation control means 55 determines that the temperature control is not necessary, and proceeds to S107.
　Ｓ１０６では、運転制御手段５５は、空調システム１０００を温調有り暖房運転で動作させる。温調有り暖房運転では、運転制御手段５５は圧縮機１、室外送風手段３、膨張弁４、室内送風手段６、及び風向調整手段７を動作させ、室温が目標温度に等しくなるよう加熱された空気を室内に供給する。 In S106, the operation control means 55 operates the air conditioning system 1000 in a heating operation with temperature control. In the heating operation with temperature control, the operation control means 55 operates the compressor 1, the outdoor air blowing means 3, the expansion valve 4, the indoor blowing means 6, and the wind direction adjusting means 7, and is heated so that the room temperature becomes equal to the target temperature. Supply air to the room.
　Ｓ１０７では、運転制御手段５５は、空調システム１０００を温調無し運転で動作させる。温調無し運転とは、例えば送風運転である。送風運転では、運転制御手段５５は室内送風手段６と風向調整手段７だけを動作させる。これにより、室内機１００から室内空気と同じ温度の気流が吹き出される。 In S107, the operation control means 55 operates the air conditioning system 1000 without temperature control. The operation without temperature control is, for example, a blower operation. In the blower operation, the operation control means 55 operates only the indoor blower means 6 and the wind direction adjusting means 7. As a result, an air flow having the same temperature as the indoor air is blown out from the indoor unit 100.
　Ｓ１０８では、運転制御手段５５は、Ｓ１０６あるいはＳ１０７で実行された空調システム１０００の運転を所定の時間継続する。ここで所定の時間とは任意の時間でよく、例えば１０秒間、１分間又は１０分間である。所定の時間が経過後、Ｓ１０９に進む。 In S108, the operation control means 55 continues the operation of the air conditioning system 1000 executed in S106 or S107 for a predetermined time. Here, the predetermined time may be any time, for example, 10 seconds, 1 minute or 10 minutes. After a predetermined time has elapsed, the process proceeds to S109.
　Ｓ１０９では、吸い込み温度計測手段１２は再び室内機１００に吸い込まれる室内の空気の温度を計測する。計測された温度は記憶手段５４及び運転制御手段５５に送信される。なお、このとき記憶手段５４はＳ１０１で計測された温度と、Ｓ１０９で計測された温度との両方を記憶する。 In S109, the suction temperature measuring means 12 measures the temperature of the indoor air sucked into the indoor unit 100 again. The measured temperature is transmitted to the storage means 54 and the operation control means 55. At this time, the storage means 54 stores both the temperature measured in S101 and the temperature measured in S109.
　Ｓ１１０では運転制御手段５５は、空調システム１０００が温調有り暖房運転で動作しているかを判定する。具体的には、運転制御手段５５は圧縮機１などの制御状態を参照し、空調システム１０００が温調有り暖房運転で動作しているかを判断する。空調システム１０００が温調有り暖房運転で動作していると判断された場合、Ｓ１１１に進む。一方、空調システム１０００が温調有り暖房運転で動作していないと判断された場合、Ｓ１２０に進む。 In S110, the operation control means 55 determines whether the air conditioning system 1000 is operating in the heating operation with temperature control. Specifically, the operation control means 55 refers to the control state of the compressor 1 and the like, and determines whether the air conditioning system 1000 is operating in the heating operation with temperature control. If it is determined that the air conditioning system 1000 is operating in the heating operation with temperature control, the process proceeds to S111. On the other hand, if it is determined that the air conditioning system 1000 is not operating in the heating operation with temperature control, the process proceeds to S120.
　Ｓ１１１では、温度計測手段１１は再び高天井空間３００と床２０６の温度を計測する。このとき、高天井空間３００と床２０６の温度を計測する位置は、Ｓ１０３で温度の計測を行った位置と同一にすることが望ましい。計測された温度は記憶手段５４及び運転制御手段５５に送信される。 In S111, the temperature measuring means 11 again measures the temperature of the high ceiling space 300 and the floor 206. At this time, it is desirable that the positions where the temperatures of the high ceiling space 300 and the floor 206 are measured are the same as the positions where the temperatures are measured in S103. The measured temperature is transmitted to the storage means 54 and the operation control means 55.
　Ｓ１１２では、温度差算出手段５３は室内温度差の時間変化を算出する。温度差算出手段５３は、まずＳ１１１で計測された高天井空間３００の温度から床２０６の温度を減じ室内温度差を算出する。この室内温度差と、記憶手段５４に記憶されたＳ１０４で算出された室内温度差とを比較し、室内温度差の時間変化を算出する。 In S112, the temperature difference calculating means 53 calculates the time change of the indoor temperature difference. The temperature difference calculating means 53 first calculates the indoor temperature difference by subtracting the temperature of the floor 206 from the temperature of the high ceiling space 300 measured in S111. This indoor temperature difference is compared with the indoor temperature difference calculated in S104 stored in the storage means 54, and the time change of the indoor temperature difference is calculated.
　より具体的には、温度差算出手段５３は、Ｓ１１１の温度を基に算出された室内温度差をΔＴ（ｎ＋１）、Ｓ１０４で算出された室内温度差をΔＴ（ｎ）、ΔＴ（ｎ＋１）を算出した時刻をｔ（ｎ＋１）、ΔＴ（ｎ）を算出した時刻をｔ（ｎ）として、下記計算式（ｉｉ）により室内温度差の時間変化を算出する。

（ΔＴ（ｎ＋１）-ΔＴ（ｎ））／（ｔ（ｎ＋１）-ｔ（ｎ））・・・（ｉｉ）

算出された室内温度差の時間変化は、記憶手段５４及び運転制御手段５５に送信される。 More specifically, the temperature difference calculating means 53 sets the indoor temperature difference calculated based on the temperature of S111 as ΔT (n + 1), and the indoor temperature difference calculated in S104 as ΔT (n) and ΔT (n + 1). With the calculated time as t (n + 1) and the time when ΔT (n) is calculated as t (n), the time change of the indoor temperature difference is calculated by the following formula (ii).

(ΔT (n + 1) -ΔT (n)) / (t (n + 1) -t (n)) ... (ii)

The calculated time change of the indoor temperature difference is transmitted to the storage means 54 and the operation control means 55.
　Ｓ１１３では、運転制御手段５５はＳ１１２で算出された室内温度差の時間変化が、所定の第１閾値ΔＴｈ１以上であるかを判定する。室内温度差の時間変化がΔＴｈ１以上である場合、Ｓ１１７に進む。Ｓ１１７では、空調システム１０００は温度差低減モード１で動作する。なお温度差低減モード１の詳細は後述する。一方、室内温度差の時間変化がΔＴｈ１未満である場合、Ｓ１１４に進む。 In S113, the operation control means 55 determines whether the time change of the indoor temperature difference calculated in S112 is equal to or greater than the predetermined first threshold value ΔTh1. If the time change of the indoor temperature difference is ΔTh1 or more, the process proceeds to S117. In S117, the air conditioning system 1000 operates in the temperature difference reduction mode 1. The details of the temperature difference reduction mode 1 will be described later. On the other hand, if the time change of the indoor temperature difference is less than ΔTh1, the process proceeds to S114.
　Ｓ１１４では、運転制御手段５５はＳ１１２で算出された室内温度差の時間変化が、所定の第２閾値ΔＴｈ２以上であるかを判定する。ここで第２閾値ΔＴｈ２は、第１閾値ΔＴｈ１より小さい。室内温度差の時間変化がΔＴｈ２以上である場合、Ｓ１１８に進む。Ｓ１１８では、空調システム１０００は温度差低減モード２で動作する。なお温度差低減モード２の詳細は後述する。一方、室内温度差の時間変化がΔＴｈ２未満である場合、Ｓ１１５に進む。 In S114, the operation control means 55 determines whether the time change of the indoor temperature difference calculated in S112 is equal to or greater than a predetermined second threshold value ΔTh2. Here, the second threshold value ΔTh2 is smaller than the first threshold value ΔTh1. If the time change of the indoor temperature difference is ΔTh2 or more, the process proceeds to S118. In S118, the air conditioning system 1000 operates in the temperature difference reduction mode 2. The details of the temperature difference reduction mode 2 will be described later. On the other hand, if the time change of the indoor temperature difference is less than ΔTh2, the process proceeds to S115.
　Ｓ１１５では、運転制御手段５４はＳ１１２で算出された室内温度差が、所定の第３閾値ΔＴｓ１以上であるかを判定する。室内温度差がΔＴｓ１以上である場合、Ｓ１１９に進む。Ｓ１１９では、空調システム１０００は温度差低減モード３で動作する。なお温度差低減モード３の詳細は後述する。一方、室内温度差がΔＴｓ１未満である場合、Ｓ１１６に進む。 In S115, the operation control means 54 determines whether the indoor temperature difference calculated in S112 is equal to or greater than a predetermined third threshold value ΔTs1. If the indoor temperature difference is ΔTs1 or more, the process proceeds to S119. In S119, the air conditioning system 1000 operates in the temperature difference reduction mode 3. The details of the temperature difference reduction mode 3 will be described later. On the other hand, if the indoor temperature difference is less than ΔTs1, the process proceeds to S116.
　上記説明したＳ１１３、Ｓ１１４、及びＳ１１５は、高天井空間３００と床２０６の間の温度差が時間経過とともに拡大しているか、拡大しているならばどの程度の速さで拡大しているかを検知するための処理である。例えば、Ｓ１１３では室内温度差が急速に拡大しているかが判断される。一方、Ｓ１１４とＳ１１５ではそれぞれ室内温度差が緩やかに拡大しているか、室内温度差はあるが拡大していないかが判断される。これは後述するように、室内温度差の拡大度合に応じて、空調システム１０００の動作を変更するためである。Ｓ１１３、Ｓ１１４、及びＳ１１５のような処理は、必ずしも３段階で行う必要はないが、室内の状態を反映して空調システム１０００を制御することができるので、複数段階あることが望ましい。 S113, S114, and S115 described above detect whether the temperature difference between the high ceiling space 300 and the floor 206 is expanding with the passage of time, and if it is expanding, how fast it is expanding. It is a process to do. For example, in S113, it is determined whether the indoor temperature difference is rapidly expanding. On the other hand, in S114 and S115, it is determined whether the indoor temperature difference is gradually increasing or whether the indoor temperature difference is present but not increasing. This is because, as will be described later, the operation of the air conditioning system 1000 is changed according to the degree of expansion of the indoor temperature difference. The processing such as S113, S114, and S115 does not necessarily have to be performed in three stages, but it is desirable that there are a plurality of stages because the air conditioning system 1000 can be controlled by reflecting the state of the room.
　Ｓ１１６では、運転制御手段５５は、空調システム１０００を温調有り暖房運転で動作させる。このときの空調システム１０００の動作はＳ１０６の動作と同じである。またＳ１１６では、Ｓ１０９で計測された室内の空気の温度とスタート時に定められた目標温度とに基いて、Ｓ１０５の処理を行ってもよい。この場合、処理の結果に応じて温調無し運転を行うようにしてもよい。 In S116, the operation control means 55 operates the air conditioning system 1000 in a heating operation with temperature control. The operation of the air conditioning system 1000 at this time is the same as the operation of S106. Further, in S116, the processing of S105 may be performed based on the temperature of the indoor air measured in S109 and the target temperature determined at the start. In this case, the operation without temperature control may be performed according to the result of the treatment.
　Ｓ１１６、Ｓ１１７、Ｓ１１８，あるいはＳ１１９が実行された後、所定の時間経過後に空調システム１０００の動作はＳ１０９に戻る。Ｓ１０９に戻った後、空調システム１０００は上記説明した動作を繰り返す。 After the execution of S116, S117, S118, or S119, the operation of the air conditioning system 1000 returns to S109 after a predetermined time has elapsed. After returning to S109, the air conditioning system 1000 repeats the operation described above.
　Ｓ１１０で運転制御手段５５が、空調システム１０００が温調有り暖房運転で動作していないと判断した場合、Ｓ１２０に進む。Ｓ１２０では直前のＳ１０９で計測された室内の空気の温度が、一つ前に計測された室内の空気の温度未満であるかを判定する。例えば、Ｓ１０９が合計三回実行されている場合は、三回目のＳ１０９で計測された室内の空気の温度が、二回目のＳ１０９で計測された室内の空気の温度未満であるかを判定する。直前のＳ１０９で計測された室内の空気の温度が、一つ前に計測された室内の空気の温度未満である場合、Ｓ１２１に進む。一方、直前のＳ１０９で計測された室内の空気の温度が、一つ前に計測された室内の空気の温度未満でない場合、Ｓ１１１に進む。Ｓ１１１以下の空調システム１０００の動作は上記説明したとおりである。 If the operation control means 55 determines in S110 that the air conditioning system 1000 is not operating in the heating operation with temperature control, the process proceeds to S120. In S120, it is determined whether the temperature of the indoor air measured in S109 immediately before is lower than the temperature of the indoor air measured immediately before. For example, when S109 is executed a total of three times, it is determined whether the temperature of the indoor air measured in the third S109 is lower than the temperature of the indoor air measured in the second S109. If the temperature of the indoor air measured in S109 immediately before is lower than the temperature of the indoor air measured immediately before, the process proceeds to S121. On the other hand, if the temperature of the indoor air measured in S109 immediately before is not lower than the temperature of the indoor air measured immediately before, the process proceeds to S111. The operation of the air conditioning system 1000 of S111 or less is as described above.
　Ｓ１２１では、運転制御手段５５は、空調システム１０００を温調優先の暖房運転で動作させる。温調優先の暖房運転は、室内の空気の温度を目標温度に到達させることを優先する。なお温調優先の暖房運転の詳細は後述する。Ｓ１２１が実行された後、処理はＳ１０９に戻る。 In S121, the operation control means 55 operates the air conditioning system 1000 in a heating operation with priority on temperature control. In the heating operation that prioritizes temperature control, priority is given to bringing the temperature of the indoor air to the target temperature. The details of the heating operation with priority on temperature control will be described later. After S121 is executed, the process returns to S109.
　続いて、Ｓ１１７、Ｓ１１８、及びＳ１１９における温度差低減モード１～３と、Ｓ１２１における温調優先の暖房運転について説明する。Ｓ１１７、Ｓ１１８、及びＳ１１９で実行される温度差低減モード１～３は、室内温度差を低減することを目的としている。なお、上記説明したように、Ｓ１１７、Ｓ１１８、及びＳ１１９のいずれが実行されるかは、Ｓ１１３、Ｓ１１４、及びＳ１１５の判定結果に依る。また温調優先の暖房は、室内温度差の低減よりも室温を目標温度に到達させることを優先している。 Subsequently, the temperature difference reduction modes 1 to 3 in S117, S118, and S119 and the heating operation in which the temperature control is prioritized in S121 will be described. The temperature difference reduction modes 1 to 3 executed in S117, S118, and S119 are aimed at reducing the indoor temperature difference. As described above, which of S117, S118, and S119 is executed depends on the determination results of S113, S114, and S115. In addition, heating that prioritizes temperature control prioritizes reaching the target temperature at room temperature rather than reducing the indoor temperature difference.
　図９は、温度差低減モード１が実施されるＳ１１３の判定条件を示す図である。また、図１０は室内温度差と経過時間との関係において、温度差低減モード１～３が実施される条件を示す図である。また、図１１は温度差低減モード１～３と、温調優先の暖房運転が実施される条件、各運転での制御対象、及び制御内容を示す図である。以下では、各運転モードが実施される条件について詳細に説明した後、温度差低減モード１～３及び温調優先の暖房運転の制御対象及び制御内容を説明する。 FIG. 9 is a diagram showing the determination conditions of S113 in which the temperature difference reduction mode 1 is implemented. Further, FIG. 10 is a diagram showing the conditions under which the temperature difference reduction modes 1 to 3 are executed in relation to the indoor temperature difference and the elapsed time. Further, FIG. 11 is a diagram showing temperature difference reduction modes 1 to 3, conditions under which heating operation with priority on temperature control is performed, control targets in each operation, and control contents. In the following, the conditions under which each operation mode is implemented will be described in detail, and then the control targets and control contents of the temperature difference reduction modes 1 to 3 and the heating operation with priority on temperature control will be described.
　図９は、人により暖房運転が開始されてからの時間と、高天井空間３００の温度、床２０６の温度、及び室内温度差とを示す図である。また、図９には上記の値から求められる１時間当たりの室内温度差の変化も示している。 FIG. 9 is a diagram showing the time since the heating operation was started by a person, the temperature of the high ceiling space 300, the temperature of the floor 206, and the temperature difference in the room. In addition, FIG. 9 also shows the change in the indoor temperature difference per hour obtained from the above values.
　図９では、室内温度差は暖房運転が開始したとき１．５℃であり、暖房運転開始１５分後では２．０℃になり、暖房運転開始後３０分では２．５℃になっている。ここで、時間あたりの室内温度差変化は２．０℃／ｈとなる。ここで例えば第１閾値ΔＴｈ１が１．５℃／ｈであるならば、上記室内温度差の時間変化はΔＴｈ１より大きい。このような条件が満たされた場合、温度差低減モード１が実行される。なお図９に示す値は一例であり、温度差低減モード１が実施される条件は図９の例に限らない。例えば、暖房運転が開始されてから１時間後の室内温度差と、２時間後の室内温度差とを比較して上記判断を行ってもよい。また温度差低減モード２は、室内温度差の時間変化が第２閾値ΔＴｈ２以上の場合に実行される。 In FIG. 9, the indoor temperature difference is 1.5 ° C. when the heating operation starts, 2.0 ° C. 15 minutes after the start of the heating operation, and 2.5 ° C. 30 minutes after the start of the heating operation. .. Here, the change in indoor temperature difference per hour is 2.0 ° C./h. Here, for example, if the first threshold value ΔTh1 is 1.5 ° C./h, the time change of the indoor temperature difference is larger than ΔTh1. When such a condition is satisfied, the temperature difference reduction mode 1 is executed. The values shown in FIG. 9 are examples, and the conditions under which the temperature difference reduction mode 1 is implemented are not limited to the example of FIG. For example, the above determination may be made by comparing the indoor temperature difference 1 hour after the start of the heating operation with the indoor temperature difference 2 hours later. Further, the temperature difference reduction mode 2 is executed when the time change of the indoor temperature difference is equal to or greater than the second threshold value ΔTh2.
　図１０は、人により暖房運転が開始されてからの時間と、室内温度差の関係を示す図である。図１０の線Ｓ１、Ｓ２はそれぞれ室内温度差が時間とともに急速に拡大している場合と、緩やかに拡大している場合の例を示している。また線Ｓ１１は室内温度差の時間変化がΔＴｈ１に等しい場合を示し、線Ｓ１２は室内温度差の時間変化がΔＴｈ２に等しい場合を示す。 FIG. 10 is a diagram showing the relationship between the time since the heating operation was started by a person and the indoor temperature difference. Lines S1 and S2 in FIG. 10 show examples of a case where the indoor temperature difference rapidly increases with time and a case where the indoor temperature difference gradually increases, respectively. Further, the line S11 shows the case where the time change of the indoor temperature difference is equal to ΔTh1, and the line S12 shows the case where the time change of the indoor temperature difference is equal to ΔTh2.
　図１０において、線Ｓ１１より上側の薄いハッチングが付された領域Ａ１内では、室内温度差が急速に拡大している。室内温度差が線Ｓ１のように変化した場合は、室内温度差の時間変化がΔＴｈ１より大きいため、温度差低減モード１が実行される。一方、線Ｓ１１と線Ｓ１２に挟まれた濃いハッチングが付された領域Ａ２内では、室内温度差は緩やかに拡大していく。このとき、室内温度差の時間変化はΔＴｈ１より小さく、ΔＴｈ２より大きいので、室内温度差が線Ｓ２のように変化した場合は、温度差低減モード２が実行される。さらに、線Ｓ１２より下側の領域Ａ３内で室内温度差が変化する場合、温度差低減モード３又は温調有り暖房運転が実施される。 In FIG. 10, the indoor temperature difference is rapidly expanding in the region A1 with the thin hatching above the line S11. When the indoor temperature difference changes as shown by the line S1, the temperature difference reduction mode 1 is executed because the time change of the indoor temperature difference is larger than ΔTh1. On the other hand, in the region A2 with dark hatching sandwiched between the lines S11 and S12, the indoor temperature difference gradually increases. At this time, since the time change of the indoor temperature difference is smaller than ΔTh1 and larger than ΔTh2, the temperature difference reduction mode 2 is executed when the indoor temperature difference changes as shown by the line S2. Further, when the indoor temperature difference changes in the region A3 below the line S12, the temperature difference reduction mode 3 or the heating operation with temperature control is carried out.
　なお、領域Ａ３ではあくまでも室内温度差の時間変化が小さい場合であって、室内温度差が無いことを示すわけではない。温度差低減モード３は、室内温度差の時間変化が小さいが、室内温度差自体は第３閾値ΔＴｓ１以上の場合に実行される。また上記温度差低減モード１～３の実施条件に対し、温調優先の暖房運転は、吸い込み温度計測手段１２によって計測される室内の空気の温度の時間変化を参照し、室内の空気の温度が時間とともに低下している場合に実行される。 Note that in region A3, the time change of the indoor temperature difference is small, and it does not mean that there is no indoor temperature difference. The temperature difference reduction mode 3 is executed when the time change of the indoor temperature difference is small, but the indoor temperature difference itself is equal to or larger than the third threshold value ΔTs1. Further, in the heating operation in which the temperature control is prioritized with respect to the implementation conditions of the temperature difference reduction modes 1 to 3, the temperature of the indoor air is changed with reference to the time change of the indoor air temperature measured by the suction temperature measuring means 12. Executed when it is decreasing over time.
　続いて図１１を参照し、温度差低減モード１～３と、温調優先の暖房運転の制御対象及び制御内容について説明する。Ｓ１１７の温度差低減モード１では、運転制御手段５５は圧縮機１の周波数をＦ１だけ低下させる。これにより、空調システム１０００の暖房能力が小さくなるので、室内機１００から吹き出される空気の温度が低下する。室内温度差が時間とともに増大する理由の一つは、室内機１００から吹き出される暖かい空気が、室内の空気との密度差により吹き上がってしまうことである。室内機１００から吹き出される空気の温度が低下すると、室内の空気との密度差が小さくなるので、床２０６付近まで暖かい空気が届くようになり室内温度差の低減が達成される。 Subsequently, with reference to FIG. 11, the control targets and control contents of the temperature difference reduction modes 1 to 3 and the heating operation with priority on temperature control will be described. In the temperature difference reduction mode 1 of S117, the operation control means 55 lowers the frequency of the compressor 1 by F1. As a result, the heating capacity of the air conditioning system 1000 is reduced, so that the temperature of the air blown from the indoor unit 100 is lowered. One of the reasons why the indoor temperature difference increases with time is that the warm air blown out from the indoor unit 100 is blown up due to the density difference with the indoor air. When the temperature of the air blown out from the indoor unit 100 decreases, the density difference with the indoor air becomes smaller, so that warm air reaches the vicinity of the floor 206, and the indoor temperature difference is reduced.
　さらにＳ１１７では、運転制御手段５５は室内送風手段６の回転数をｆ１だけ増加させる。また運転制御手段５５は風向調整手段７を制御し、室内機１００から吹き出す気流の上下方向を、下方向に少なくとも１段階以上変更する。これにより、温度差低減モード１の実行前よりも下方向に強い気流が生成され、暖かい空気が床２０６付近に到達しやすくなる。さらに、室内機１００から下方向に強い気流が吹き出されることで、室内全体に上下方向の空気の流れが生成される。これにより、温度の高い高天井空間３００の空気と、温度の低い床２０６付近の空気とが攪拌され室内温度差のさらなる低減が達成される。 Further, in S117, the operation control means 55 increases the rotation speed of the indoor blower means 6 by f1. Further, the operation control means 55 controls the wind direction adjusting means 7 to change the vertical direction of the airflow blown from the indoor unit 100 downward by at least one step or more. As a result, a stronger airflow is generated in the downward direction than before the temperature difference reduction mode 1 is executed, and warm air can easily reach the vicinity of the floor 206. Further, a strong downward air flow is blown out from the indoor unit 100, so that a vertical air flow is generated in the entire room. As a result, the air in the high ceiling space 300 having a high temperature and the air in the vicinity of the floor 206 having a low temperature are agitated, and the indoor temperature difference is further reduced.
　なお、Ｓ１１７において制御対象の変更値は室内機１００の取り付け位置や高天井空間３００の位置によって決定するようにしてもよい。例えば、図２（ａ）では室内機１００にから離れた位置に高天井空間３００が存在し、図２（ｃ）では室内機１００の上に高天井空間３００が存在する。このとき、図２（ａ）のような場合は、気流の方向を１段階だけ変化させ、図２（ｃ）のような場合は、気流の方向を２段階以上変化させるようにしてもよい。上記のような制御を行うことで、図１２（ａ）、（ｂ）で後述するように高天井空間３００と床２０６付近の空気をより効率的に混合させることができる。 In S117, the change value of the control target may be determined by the mounting position of the indoor unit 100 or the position of the high ceiling space 300. For example, in FIG. 2A, the high ceiling space 300 exists at a position away from the indoor unit 100, and in FIG. 2C, the high ceiling space 300 exists above the indoor unit 100. At this time, in the case of FIG. 2A, the direction of the airflow may be changed by only one step, and in the case of FIG. 2C, the direction of the airflow may be changed by two or more steps. By performing the above control, the air in the vicinity of the high ceiling space 300 and the floor 206 can be mixed more efficiently as described later in FIGS. 12 (a) and 12 (b).
　Ｓ１１８の温度差低減モード２では、運転制御手段５５は圧縮機１の周波数をＦ２だけ低下させる。このとき、Ｆ２はＦ１より小さい。これは温度差低減モード２が実行される場合、時間経過による室内温度差の拡大は緩やかであり、空調システム１０００の動作状態を大きく変えなくても室内温度差の低減が達成できるからである。圧縮機１の周波数の低下度合を小さくすることで、室内機１００から吹き出される気流の温度を必要以上に低下させることがなくなる。 In the temperature difference reduction mode 2 of S118, the operation control means 55 lowers the frequency of the compressor 1 by F2. At this time, F2 is smaller than F1. This is because when the temperature difference reduction mode 2 is executed, the indoor temperature difference gradually increases with the passage of time, and the indoor temperature difference can be reduced without significantly changing the operating state of the air conditioning system 1000. By reducing the degree of decrease in the frequency of the compressor 1, the temperature of the airflow blown from the indoor unit 100 is not lowered more than necessary.
　さらにＳ１１８では、室内送風手段６の回転数をｆ２だけ増加させるとともに、風向調整手段７を制御して室内機１００から吹き出す気流の上下方向を下方向に少なくとも１段階以上変更する。このとき、ｆ２はｆ１より小さい。これは時間経過による室内温度差の拡大が緩やかなので、必要以上に風速を上げすぎないためである。 Further, in S118, the rotation speed of the indoor blower means 6 is increased by f2, and the wind direction adjusting means 7 is controlled to change the vertical direction of the airflow blown from the indoor unit 100 downward by at least one step or more. At this time, f2 is smaller than f1. This is because the indoor temperature difference gradually increases with the passage of time, so the wind speed is not increased more than necessary.
　Ｓ１１９の温度差低減モード３では、運転制御手段５５は、圧縮機１の周波数をＦ３だけ低下させる。このとき、Ｆ３はＦ２より小さい。温度差低減モード３が実行される場合、室内温度差の時間変化は小さく、室内の空気の状態は安定していると考えられる。そのため、空調システム１０００の動作状態を大きく変更せずとも、安定した状態を崩すことによって室内温度差が低減できるからである。 In the temperature difference reduction mode 3 of S119, the operation control means 55 lowers the frequency of the compressor 1 by F3. At this time, F3 is smaller than F2. When the temperature difference reduction mode 3 is executed, it is considered that the time change of the indoor temperature difference is small and the state of the air in the room is stable. Therefore, the indoor temperature difference can be reduced by breaking the stable state without significantly changing the operating state of the air conditioning system 1000.
　同様にＳ１１９では、運転制御手段５５は室内送風手段６の回転数をf３だけ増加させ、風向調整手段７を制御して室内機１００から吹き出す気流の上下方向を下方向に少なくとも１段階以上変更する。このとき、ｆ３はｆ２より小さい。これは上下方向の空気の攪拌が弱くても室内温度差が低減されるからである。 Similarly, in S119, the operation control means 55 increases the rotation speed of the indoor blower means 6 by f3, controls the wind direction adjusting means 7, and changes the vertical direction of the airflow blown from the indoor unit 100 downward by at least one step or more. .. At this time, f3 is smaller than f2. This is because the indoor temperature difference is reduced even if the air agitation in the vertical direction is weak.
　なお、上記説明した温度差低減モード１～３が実行される際、必ずしも圧縮機１の周波数の低下と、室内送風手段６の回転数の増加と、風向調整手段７の方向の変化とのすべてを実行する必要はない。例えば、まず室内送風手段６の回転数の増加と、風向調整手段７の方向の変化だけを行い、室内温度差が低減されるかを判定するようにしてもよい。この場合、室内温度差が十分低減されれば、圧縮機１の周波数を低下させる必要はない。また圧縮機１、室内送風手段６、及び風向調整手段７の設計上、条件を変更できない場合は条件を変更しなくともよい。 When the temperature difference reduction modes 1 to 3 described above are executed, all of the decrease in the frequency of the compressor 1, the increase in the rotation speed of the indoor blower means 6, and the change in the direction of the wind direction adjusting means 7. There is no need to execute. For example, first, only the increase in the rotation speed of the indoor air blowing means 6 and the change in the direction of the wind direction adjusting means 7 may be performed to determine whether the indoor temperature difference is reduced. In this case, if the indoor temperature difference is sufficiently reduced, it is not necessary to reduce the frequency of the compressor 1. Further, if the conditions cannot be changed due to the design of the compressor 1, the indoor air blowing means 6, and the wind direction adjusting means 7, it is not necessary to change the conditions.
　空調システム１０００がＳ１１７～Ｓ１１９の温度差低減モード１～３のいずれかで動作している場合、所定の時間経過後に処理はＳ１０９に戻る。Ｓ１１２の処理が再び行われると、上記説明した室内温度差の時間変化について改めて判定を行い、温度差低減モード１～３のいずれかあるいは温調有り暖房運転が実行される。これを繰り返すことによって、室内温度差の時間変化に基づいて、適宜最適な運転が実行される。 When the air conditioning system 1000 is operating in any of the temperature difference reduction modes 1 to 3 of S117 to S119, the process returns to S109 after a predetermined time has elapsed. When the processing of S112 is performed again, the time change of the indoor temperature difference described above is determined again, and any one of the temperature difference reduction modes 1 to 3 or the heating operation with temperature control is executed. By repeating this, the optimum operation is appropriately executed based on the time change of the indoor temperature difference.
　図１２（ａ）、（ｂ）は空調システム１０００が温度差低減モード１～３で動作しているときの、室内の状態の一例を示す図である。図１２（ａ）のような場合、温度差低減モード１～３では、室内機１００から下向きの気流４００が吹き出される。気流４００は、室内全体で強い上下方向の空気の攪拌を発生させる。これにより高天井空間３００に滞留していた暖気５００が生活空間３０１の空気と混合される。これにより室内温度差が低減される。 12 (a) and 12 (b) are diagrams showing an example of the indoor state when the air conditioning system 1000 is operating in the temperature difference reduction modes 1 to 3. In the case of FIG. 12A, the downward airflow 400 is blown out from the indoor unit 100 in the temperature difference reduction modes 1 to 3. The airflow 400 causes strong vertical air agitation throughout the room. As a result, the warm air 500 staying in the high ceiling space 300 is mixed with the air in the living space 301. This reduces the indoor temperature difference.
　また図１２（ｂ）では室内機１００は壁埋ビルトイン型である。この場合、温度差低減モード１～３の制御対象の変更値を、室内機１００と高天井空間３００相対的な位置によって決定するようにしてもよい。例えば気流の方向でいえば、図１２（ａ）のように室内機１００と高天井空間３００が離れているときは気流の方向を下方向に１段階だけ変更し、図１２（ｂ）のように室内機１００と高天井空間３００が近い場合は、気流の方向を上方向に２段階以上変更するようにしてもよい。このとき図１２（ａ）では室内機１００から距離のある高天井空間３００まで届く気流が形成され、図１２（ｂ）では高天井空間３００に特に強い上下方向の気流が形成される。このように温度差低減モード１～３の制御対象の変更値を、室内機１００と高天井空間３００相対的な位置によって決定することで、高天井空間３００の暖気と床２０６付近の空気が効率よく混合する。 Further, in FIG. 12B, the indoor unit 100 is a wall-embedded built-in type. In this case, the change value of the control target in the temperature difference reduction modes 1 to 3 may be determined by the relative positions of the indoor unit 100 and the high ceiling space 300. For example, in terms of the direction of the airflow, when the indoor unit 100 and the high ceiling space 300 are separated as shown in FIG. 12A, the direction of the airflow is changed downward by one step, as shown in FIG. 12B. When the indoor unit 100 and the high ceiling space 300 are close to each other, the direction of the airflow may be changed upward by two or more steps. At this time, in FIG. 12A, an airflow reaching the high ceiling space 300 at a distance from the indoor unit 100 is formed, and in FIG. 12B, a particularly strong vertical airflow is formed in the high ceiling space 300. By determining the change value of the controlled object in the temperature difference reduction modes 1 to 3 based on the relative positions of the indoor unit 100 and the high ceiling space 300, the warm air of the high ceiling space 300 and the air near the floor 206 are efficient. Mix well.
　なお高天井空間３００が存在しない場合についても、温度差低減モード１～３の動作は同じである。この場合、天井付近に溜まっていた暖気が生活空間の空気と混合されることになり、室内の上下方向の温度差は低減される。 Even when the high ceiling space 300 does not exist, the operation of the temperature difference reduction modes 1 to 3 is the same. In this case, the warm air accumulated near the ceiling is mixed with the air in the living space, and the temperature difference in the vertical direction in the room is reduced.
　再び図１１を参照すると、Ｓ１２１において空調システム１０００が温調優先の暖房運転で動作する場合、運転制御手段５５は圧縮機１の周波数をＦ４だけ上昇させる。これにより、空調システム１０００の暖房能力が上昇し、室内機から吹き出される気流の温度が高くなる。この温度が高い気流によって、室内の空気が温められ室温の低下を回避することができる。なお温調優先の暖房運転において、室内送風機６の周波数及び風向調整手段７の方向は変化させなくともよい。 Referring to FIG. 11 again, when the air conditioning system 1000 operates in the heating operation with priority on temperature control in S121, the operation control means 55 raises the frequency of the compressor 1 by F4. As a result, the heating capacity of the air conditioning system 1000 increases, and the temperature of the airflow blown from the indoor unit rises. This high temperature airflow warms the indoor air and avoids a drop in room temperature. In the heating operation with priority on temperature control, the frequency of the indoor blower 6 and the direction of the wind direction adjusting means 7 do not have to be changed.
　以上説明したように、空調システム１０００は高天井空間３００と床２０６との温度差を室内温度差として算出する。さらに、算出した室内温度差が第３閾値ΔＴｓ１未満であれば、温調有り暖房運転を実行する。一方、室内温度差が第３閾値ΔＴｓ１以上であれば、空調システム１０００は温度差低減モード３を実行する。これにより、室内において上下方向に空気の攪拌が発生し、高天井空間３００に滞留していた暖気５００が生活空間３０１の空気と混合される。結果、室内温度差を低減することができ、人の快適性の向上や省エネが達成される。 As described above, the air conditioning system 1000 calculates the temperature difference between the high ceiling space 300 and the floor 206 as the indoor temperature difference. Further, if the calculated indoor temperature difference is less than the third threshold value ΔTs1, the heating operation with temperature control is executed. On the other hand, if the indoor temperature difference is equal to or greater than the third threshold value ΔTs1, the air conditioning system 1000 executes the temperature difference reduction mode 3. As a result, air is agitated in the vertical direction in the room, and the warm air 500 staying in the high ceiling space 300 is mixed with the air in the living space 301. As a result, the indoor temperature difference can be reduced, and human comfort is improved and energy saving is achieved.
　さらに空調システム１０００は室内温度差の時間変化を算出する。空調システム１０００は室内温度差の時間変化が第１閾値ΔＴｈ１以上の場合は温度差低減モード１で動作し、第２閾値ΔＴｈ２以上の場合は温度差低減モード２で動作する。これにより室内温度差が時間とともに拡大しているときは、室内の上下方向の空気の攪拌がより強くなり、室内温度差を効率よく低減することができる。結果、人の快適性の向上や省エネが達成される。 Further, the air conditioning system 1000 calculates the time change of the indoor temperature difference. The air conditioning system 1000 operates in the temperature difference reduction mode 1 when the time change of the indoor temperature difference is the first threshold value ΔTh1 or more, and operates in the temperature difference reduction mode 2 when the second threshold value ΔTh2 or more. As a result, when the indoor temperature difference increases with time, the agitation of the air in the vertical direction in the room becomes stronger, and the indoor temperature difference can be efficiently reduced. As a result, improvement of human comfort and energy saving are achieved.
　加えて、空調システム１０００は室内の空気の温度が時間とともに低下した場合は、温調優先の暖房運転を実行する。これにより、室内の空気の温度が低下し、人の快適性が損なわれることを回避することができる。 In addition, when the temperature of the air in the room drops with time, the air conditioning system 1000 executes a heating operation with priority on temperature control. As a result, it is possible to prevent the temperature of the air in the room from being lowered and the comfort of the person from being impaired.
　なお以上説明した空調システム１０００はあくまでも一例であり、本開示の趣旨を逸脱しない範囲で種々変形することが可能である。 The air conditioning system 1000 described above is merely an example, and can be variously modified without departing from the gist of the present disclosure.
　例えば、本実施の形態は室内機１００が床置き型であっても適用可能である。 For example, this embodiment can be applied even if the indoor unit 100 is a floor-standing type.
　図１３は室内機１００が床置き型である場合の空調システム１０００の機能を示す図である。床２０６上に配置された室内機１００から上向き気流４０１が吹き出されており、上向き気流４０１により高天井空間３００に滞留する暖気５００が生活空間３０１の空気と混合される。 FIG. 13 is a diagram showing the functions of the air conditioning system 1000 when the indoor unit 100 is a floor-standing type. The upward airflow 401 is blown out from the indoor unit 100 arranged on the floor 206, and the warm air 500 staying in the high ceiling space 300 is mixed with the air in the living space 301 by the upward airflow 401.
　さらに、空調システム１０００には現在の運転状態を知らせる報知手段を備えてもよい。この場合、報知手段は例えば端末７０に、空調システム１０００が温度差低減モード１～３、温調有り暖房運転、温調無し暖房運転、温調優先の暖房運転のいずれで動作しているかを表示する。これにより人は空調システム１０００の動作状況を知ることができる。 Further, the air conditioning system 1000 may be provided with a notification means for notifying the current operating state. In this case, the notification means displays, for example, on the terminal 70 whether the air conditioning system 1000 is operating in the temperature difference reduction modes 1 to 3, the heating operation with temperature control, the heating operation without temperature control, or the heating operation with priority on temperature control. do. This allows a person to know the operating status of the air conditioning system 1000.
　さらにこの場合、人が空調システム１０００の運転状態を切り替えられるようにする機能を端末７０に持たせてもよい。空調システム１０００は、人に選択された運転状態で動作する。これにより、空調システム１０００はより人の意に沿った運転をすることが可能となる。 Further, in this case, the terminal 70 may be provided with a function that allows a person to switch the operating state of the air conditioning system 1000. The air conditioning system 1000 operates in an operating state selected by a person. As a result, the air conditioning system 1000 can be operated according to human intentions.
　実施の形態２
　図１４、図１５、及び図１６を参照しながら、本開示の実施の形態２について説明する。以下では、本実施の形態に係る空調システム１０００について、実施の形態１との相違点を中心に説明する。説明を省略した構成については実施の形態１と同一である。 Embodiment 2
Embodiment 2 of the present disclosure will be described with reference to FIGS. 14, 15, and 16. Hereinafter, the air conditioning system 1000 according to the present embodiment will be described focusing on the differences from the first embodiment. The configuration in which the description is omitted is the same as that in the first embodiment.
　図１４は本実施の形態における制御手段５０の構成を示す図である。本実施の形態における制御手段５０は、図６に示す実施の形態１の制御手段５０の構成に加えて、室内にいる人を検知するための人検知手段５６を備える。 FIG. 14 is a diagram showing the configuration of the control means 50 in the present embodiment. The control means 50 in the present embodiment includes a person detecting means 56 for detecting a person in the room in addition to the configuration of the control means 50 of the first embodiment shown in FIG.
　また本実施の形態では温度計測手段１１は、床２０６と、高天井空間３００を構成する天井２０３や壁２０４を含む範囲の温度に加え、人を検知するために、床２０６と高天井空間３００の間の生活空間３０１の温度についても計測を行う。具体的には、温度計測手段１１は壁２０４と壁２０５の境目から壁２０５と床２０６の境目まで手についても温度を計測する。計測された温度は温度差算出手段５３、運転制御手段５４、記憶手段５５、及び人検知手段５６に送信される。 Further, in the present embodiment, the temperature measuring means 11 has the floor 206 and the high ceiling space 300 in order to detect a person in addition to the temperature in the range including the floor 206 and the ceiling 203 and the wall 204 constituting the high ceiling space 300. The temperature of the living space 301 in between is also measured. Specifically, the temperature measuring means 11 also measures the temperature of the hand from the boundary between the wall 204 and the wall 205 to the boundary between the wall 205 and the floor 206. The measured temperature is transmitted to the temperature difference calculating means 53, the operation control means 54, the storage means 55, and the person detecting means 56.
　人検知手段５６は、温度計測手段１１が計測した上記温度を基に人を検知する。なお、室内の温度分布から人を検知する技術は公知技術として開示されている。例えば、人の頭部は室内では露出されることが多く、その温度は年齢、性別による影響が少なくほぼ３６度程度であるため、これを利用して人を検知する技術が開示されている。本実施の形態においても同様の方法により人を検知してもよい。 The person detecting means 56 detects a person based on the above temperature measured by the temperature measuring means 11. The technique of detecting a person from the temperature distribution in the room is disclosed as a known technique. For example, a person's head is often exposed indoors, and its temperature is less affected by age and gender and is about 36 degrees Celsius. Therefore, a technique for detecting a person using this is disclosed. In the present embodiment as well, a person may be detected by the same method.
　また人検出手段５６は、室内に人がいると検出した場合、室内機１００から見た上記人がいる方向も検知する。これは後述するように、温度差低減モード１～３を実施する場合に、人に気流が直接当たって快適性を低下させることを防止するためである。人検知手段５６の検知結果は、運転制御手段５４及び記憶手段５５に送信される。 Further, when the person detecting means 56 detects that there is a person in the room, it also detects the direction in which the person is seen from the indoor unit 100. This is to prevent the airflow from directly hitting a person and reducing the comfort when the temperature difference reduction modes 1 to 3 are carried out, as will be described later. The detection result of the human detection means 56 is transmitted to the operation control means 54 and the storage means 55.
　続いて、本実施の形態における空調システム１０００の動作を説明する。図１５は本実施の形態における空調システム１０００の動作を示すフローチャートである。図８にフローチャートと比較すると、図１５ではＳ１１１がＳ２０１に置き換えられ、さらにＳ２１１の後にＳ２０２が追加されている。 Subsequently, the operation of the air conditioning system 1000 in the present embodiment will be described. FIG. 15 is a flowchart showing the operation of the air conditioning system 1000 according to the present embodiment. Comparing with the flowchart in FIG. 8, in FIG. 15, S111 is replaced with S201, and S202 is added after S211.
　Ｓ２０１では温度計測手段１１は、高天井空間３００の温度、床２０６の温度、及び生活空間３００の温度も計測する。計測した温度は温度差算出手段５３、運転制御手段５４、記憶手段５５、及び人検知手段５６に送信される。 In S201, the temperature measuring means 11 also measures the temperature of the high ceiling space 300, the temperature of the floor 206, and the temperature of the living space 300. The measured temperature is transmitted to the temperature difference calculating means 53, the operation control means 54, the storage means 55, and the person detecting means 56.
　Ｓ２０２では人検知手段５６はＳ２０１で計測された生活空間３００の温度から、人を検知する。人検知手段５６は例えば、上記計測された温度を基に室内に人の頭部と思われる部位が存在しているかによって、人を検知する。さらにこの時、人検知手段５６は室内機１００から見た、人が存在する方向も検知する。人検知手段５６の検知結果は運転制御手段５４及び記憶手段５５に送信される。 In S202, the person detecting means 56 detects a person from the temperature of the living space 300 measured in S201. The human detection means 56 detects a person based on, for example, whether or not a portion of the room that is considered to be a human head exists based on the measured temperature. Further, at this time, the person detecting means 56 also detects the direction in which the person exists as seen from the indoor unit 100. The detection result of the human detection means 56 is transmitted to the operation control means 54 and the storage means 55.
　Ｓ１１７、Ｓ１１８、及びＳ１１９では実施の形態１と同様に、温度差低減モード１～３が実行される。ただし、本実施の形態における温度差低減モード１～３の制御対象及び変更値は、実施の形態１と異なる。 In S117, S118, and S119, the temperature difference reduction modes 1 to 3 are executed as in the first embodiment. However, the controlled objects and changed values of the temperature difference reduction modes 1 to 3 in the present embodiment are different from those in the first embodiment.
　図１６は、本実施の形態における温度差低減モード１～３の制御対象と変更値を示す図である。本実施の形態では、Ｓ２０２において人が検出された場合、温度差低減モード１～３で気流の上下方向に加えて、気流の左右方向も変更する。具体的には、温度差低減モード１～３において、運転制御手段５５は風向調整手段７を制御して、室内機１００から吹き出す気流の左右方向を人がいない方向に変更する。なおこのとき、そのほかの制御対象と変更値は実施の形態１と同様でよい。 FIG. 16 is a diagram showing control targets and change values of the temperature difference reduction modes 1 to 3 in the present embodiment. In the present embodiment, when a person is detected in S202, the left-right direction of the airflow is changed in addition to the up-down direction of the airflow in the temperature difference reduction modes 1 to 3. Specifically, in the temperature difference reduction modes 1 to 3, the operation control means 55 controls the wind direction adjusting means 7 to change the left-right direction of the airflow blown from the indoor unit 100 to a direction in which no one is present. At this time, the other control targets and the changed values may be the same as those in the first embodiment.
　以上説明したように、本実施の形態の空調システム１０００は、室内に人がいることを検知し、温度差低減モード１～３での気流の左右方向を人がいない方向に調整する。これにより、温度差低減モード１～３を実行する場合に、速度の大きい気流が人に直接あたることがなくなり、人の快適性が向上する。 As described above, the air conditioning system 1000 of the present embodiment detects that there is a person in the room and adjusts the left-right direction of the airflow in the temperature difference reduction modes 1 to 3 so that there is no person. As a result, when the temperature difference reduction modes 1 to 3 are executed, the high-speed airflow does not directly hit the person, and the comfort of the person is improved.
　また、本実施の形態において空調システム１０００は下記のような動作をしてもよい。図１５に示すフローチャートにおいて、Ｓ２０２で人検知手段５６が人を検知した場合、Ｓ１１６に進み、人を検知しなかった場合Ｓ１１２に進むようにしてもよい。この場合、室内に人が存在する場合温度差解消モード１～３は実行されなくなる。これにより、温度差低減モード１～３を実行する場合に、速度の大きい気流が人に直接あたることがより確実になくなり、人の快適性が向上する。 Further, in the present embodiment, the air conditioning system 1000 may operate as follows. In the flowchart shown in FIG. 15, if the person detecting means 56 detects a person in S202, the process may proceed to S116, and if no person is detected, the process may proceed to S112. In this case, when a person is present in the room, the temperature difference elimination modes 1 to 3 are not executed. As a result, when the temperature difference reduction modes 1 to 3 are executed, it is more certain that the high-speed airflow does not directly hit the person, and the comfort of the person is improved.
実施の形態３
　図１７、１８を参照しながら、本開示の実施の形態３について説明する。以下では、本実施の形態に係る空調システム１０００について、実施の形態１との相違点を中心に説明する。説明を省略した構成については実施の形態１と同一である。 Embodiment 3
Embodiment 3 of the present disclosure will be described with reference to FIGS. 17 and 18. Hereinafter, the air conditioning system 1000 according to the present embodiment will be described focusing on the differences from the first embodiment. The configuration in which the description is omitted is the same as that in the first embodiment.
　図１７は本実施の形態における制御手段５０の構成を示す図である。本実施の形態における制御手段５０は、実施の形態１における制御手段５０の構成に加え、人の入室を予見する入室予見手段５７を有する。 FIG. 17 is a diagram showing the configuration of the control means 50 in the present embodiment. In addition to the configuration of the control means 50 in the first embodiment, the control means 50 in the present embodiment includes an entry prediction means 57 for predicting the entry of a person.
　入室予見手段５７は、例えば人が所有するスマートフォンやウェアラブル端末と通信することが可能で、ＧＰＳ(商標登録)などを利用して、少なくとも室内機１００が設置された室内にいない人の位置を検知する。さらに、検知した人の位置の時間変化から、室内機１００が設置された室内に人が入室することを予見する。 The room entry prediction means 57 can communicate with, for example, a smartphone or a wearable terminal owned by a person, and detects the position of a person who is not in the room where at least the indoor unit 100 is installed by using GPS (trademark registration) or the like. do. Further, from the time change of the detected position of the person, it is predicted that the person will enter the room in which the indoor unit 100 is installed.
　具体的には、入室予見手段５７は所定の時間間隔（例えば５分）で、人の位置を検知する。このとき、人が室内機１００の設置された室内から所定の距離（例えば５［ｋｍ］）以内におり、かつ室内に近づいているとき、入室予見手段５７は人が室内に入室することを予見する。予見された結果は、運転制御手段５４及び記憶手段５５に送信される。 Specifically, the room entry prediction means 57 detects the position of a person at a predetermined time interval (for example, 5 minutes). At this time, when the person is within a predetermined distance (for example, 5 [km]) from the room where the indoor unit 100 is installed and is approaching the room, the room entry predicting means 57 predicts that the person will enter the room. do. The foreseeable result is transmitted to the operation control means 54 and the storage means 55.
　続いて、本実施の形態の空調システム１０００の動作について説明する。図１８は本実施の形態における空調システム１０００の動作を示すフローチャートである。 Subsequently, the operation of the air conditioning system 1000 of the present embodiment will be described. FIG. 18 is a flowchart showing the operation of the air conditioning system 1000 according to the present embodiment.
　Ｓ３０１では、入室予見手段５７は人が室内に入室することを予見する。具体的には、入室予見手段５７は少なくとも２つの異なる時刻で人の位置を検知し、人が室内から所定の距離に存在し、かつ時間経過とともに室内に近づいているとき人が室内に入室すると予見する。入室予見手段５７が人の入室を予見した場合、Ｓ１０２に進む。一方、入室予見手段５７が人の入室を予見しなかった場合、所定の時間間隔（例えば１０分）でＳ３０１の処理を繰り返す。 In S301, the room entry prediction means 57 predicts that a person will enter the room. Specifically, the room entry predictor 57 detects the position of a person at at least two different times, and when the person is at a predetermined distance from the room and is approaching the room over time, the person enters the room. Foresee. When the room entry prediction means 57 predicts the entry of a person, the process proceeds to S102. On the other hand, when the room entry prediction means 57 does not predict the entry of a person, the process of S301 is repeated at a predetermined time interval (for example, 10 minutes).
　Ｓ３０２では、Ｓ１０４で温度差算出手段５３が算出した室内温度差が、第３閾値ΔＴｓ１以上であった場合、Ｓ３０４に進む。一方、上記室内温度差が第３閾値ΔＴｓ１未満であった場合、Ｓ３０３に進む。なおＳ３０２においては、必ずしも第３閾値ΔＴｓ１と室内温度差とによって判断を行う必要はなく、第３閾値ΔＴｓ１と異なる所定の第４閾値ΔＴｓ２と室内温度差とによって判断を行ってもよい。 In S302, if the indoor temperature difference calculated by the temperature difference calculating means 53 in S104 is equal to or greater than the third threshold value ΔTs1, the process proceeds to S304. On the other hand, if the indoor temperature difference is less than the third threshold value ΔTs1, the process proceeds to S303. In S302, it is not always necessary to make a judgment based on the third threshold value ΔTs1 and the indoor temperature difference, and the judgment may be made based on a predetermined fourth threshold value ΔTs2 different from the third threshold value ΔTs1 and the indoor temperature difference.
　Ｓ３０３では、運転制御手段５４は空調システム１０００の動作を停止する。なおこの時運転制御手段５４は、圧縮機１、室外送風手段３、膨張弁４、室内送風手段６、及び風向調整手段７の動作を停止させる一方、少なくとも温度計測手段１１、温度差算出手段５３の動作は継続する。空調システム１０００の動作が停止した後、Ｓ１０３に戻る。 In S303, the operation control means 54 stops the operation of the air conditioning system 1000. At this time, the operation control means 54 stops the operations of the compressor 1, the outdoor blower means 3, the expansion valve 4, the indoor blower means 6, and the wind direction adjusting means 7, while at least the temperature measuring means 11 and the temperature difference calculating means 53. Operation continues. After the operation of the air conditioning system 1000 is stopped, the process returns to S103.
　Ｓ３０４では、空調システム１０００は温度差低減モード４で動作する。温度差低減モード４では、運転制御手段５４は室内送風手段６及び風向調整手段７を動作させる。このとき、室内送風手段６の室内ファン回転数は特に限定せず、例えば所定の一定の値でもよく、室内機１００から高天井空間３００までの距離に応じて決定するようにしてもよい。さらに風向調整手段７は、少なくとも水平以外の方向に向けて気流が吹き出されるよう制御される。図４の例でいえば、風向調整手段７は上下風向２～５のいずれかの状態に制御される。なお、実施の形態１の温度差低減モード１～３と同様に、風向調整手段７の向きを室内機１００と高天井空間３００の間の距離に応じて決定するようにしてもよい。 In S304, the air conditioning system 1000 operates in the temperature difference reduction mode 4. In the temperature difference reduction mode 4, the operation control means 54 operates the indoor blower means 6 and the wind direction adjusting means 7. At this time, the rotation speed of the indoor fan of the indoor blower means 6 is not particularly limited, and may be, for example, a predetermined constant value, and may be determined according to the distance from the indoor unit 100 to the high ceiling space 300. Further, the wind direction adjusting means 7 is controlled so that the airflow is blown out at least in a direction other than horizontal. In the example of FIG. 4, the wind direction adjusting means 7 is controlled to any of the vertical wind directions 2 to 5. As in the temperature difference reduction modes 1 to 3 of the first embodiment, the direction of the wind direction adjusting means 7 may be determined according to the distance between the indoor unit 100 and the high ceiling space 300.
　これにより、温度差低減モード４においては室内機１００から下方向の気流が吹き出され、さらに室内全体に上下方向の空気の流れが生成される。これにより、高天井空間３００の暖気と生活空間３０１空気とが混同され、室内温度差が解消する。 As a result, in the temperature difference reduction mode 4, a downward air flow is blown out from the indoor unit 100, and a vertical air flow is further generated in the entire room. As a result, the warm air in the high ceiling space 300 and the air in the living space 301 are confused, and the indoor temperature difference is eliminated.
　Ｓ３０５では、入室予見手段５７は人が室内に入室したかを判断する。具体的には、人が室内機１００の前方かつ室内機１００から所定の距離（例えば５［ｍ］）以内にいる場合に人が室内に入室したと判断する。室内に人が入室した場合、空調システム１０００の動作はＳ３０６で図８に示す実施の形態１の動作に切り替わる。このとき、空調システム１０００の目標温度は、例えば前回実施の形態１の動作で空調システム１０００が動作した時の目標温度などとしてもよい。一方、室内に人が入室していない場合、Ｓ１０３に戻る。 In S305, the room entry prediction means 57 determines whether a person has entered the room. Specifically, when the person is in front of the indoor unit 100 and within a predetermined distance (for example, 5 [m]) from the indoor unit 100, it is determined that the person has entered the room. When a person enters the room, the operation of the air conditioning system 1000 is switched to the operation of the first embodiment shown in FIG. 8 in S306. At this time, the target temperature of the air conditioning system 1000 may be, for example, the target temperature when the air conditioning system 1000 is operated in the operation of the previous embodiment 1. On the other hand, if no person has entered the room, the process returns to S103.
　以上説明したように、本実施の形態の空調システム１０００は、人が室内に入室することを予見する。人の入室が予見され、かつ室内温度差が第３閾値ΔＴｓ１以上であるとき、空調システム１０００は温度差低減モード３を実行する。これにより、例えば人が外出先から室内に戻ってくるとき、空調システム１０００はあらかじめ高天井空間３００に滞留している暖かい空気と、生活空間３００の空気とを混合させておく。これにより、人が帰宅したとき生活空間３００の空気の温度はすでに上昇しているので、人の快適性が向上する。 As described above, the air conditioning system 1000 of the present embodiment predicts that a person will enter the room. When a person is foreseen to enter the room and the room temperature difference is equal to or greater than the third threshold value ΔTs1, the air conditioning system 1000 executes the temperature difference reduction mode 3. As a result, for example, when a person returns to the room from outside, the air conditioning system 1000 previously mixes the warm air staying in the high ceiling space 300 with the air in the living space 300. As a result, the temperature of the air in the living space 300 has already risen when the person returns home, so that the comfort of the person is improved.
　なお、本実施の形態における空調システム１０００の動作を、実施の形態２における空調システム１０００の動作と組み合わせることも可能である。この場合、Ｓ３０６では空調システム１０００の動作は、図１５に示す実施の形態２の動作に切り替わる。また、この場合Ｓ３０５において人が入室したかの判断は、人検知手段５６により行ってもよい　 It is also possible to combine the operation of the air conditioning system 1000 in the present embodiment with the operation of the air conditioning system 1000 in the second embodiment. In this case, in S306, the operation of the air conditioning system 1000 is switched to the operation of the second embodiment shown in FIG. Further, in this case, the person detecting means 56 may be used to determine whether or not a person has entered the room in S305.
１　圧縮機、　２　室外熱交換器、　３　室外送風手段、　４　膨張弁
５　室内熱交換器、　６　室内送風手段、　７　風向調整手段、　１０　距離計測手段
１１　温度計測手段、　１２　吸い込み温度計測手段、　２１　モータ本体　
２２　モータ軸、　２３　支持部材、　２４　超音波式距離センサ、　３０　筐体
３１　吸い込み口、　３２　吹き出し口、　５０　制御手段、　５１　高天井検知手段
５２　床検知手段、　５３　温度差算出手段、　５４　記憶手段、　５５　運転制御手段
５６　人検知手段　　７０　端末、　１００　室内機、　１０１　室外機
２００、２０２、２０４、２０５　壁　２０１、２０３　天井、　２０６　床
２０７　天井２０１の水平延長線、　３００　高天井空間、　３０１　生活空間
４００ 　気流、　４０１　上向きの気流、５００　暖気、　１０００　空調システム 1 Compressor, 2 Outdoor heat exchanger, 3 Outdoor air blower means, 4 Expansion valve 5 Indoor heat exchanger, 6 Indoor air blower means, 7 Wind direction adjusting means, 10 Distance measuring means 11 Temperature measuring means, 12 Suction temperature measuring means, 21 Motor body
22 Motor shaft, 23 Support member, 24 Ultrasonic distance sensor, 30 Housing 31 Suction port, 32 Outlet port, 50 Control means, 51 High ceiling detection means 52 Floor detection means, 53 Temperature difference calculation means, 54 Storage means, 55 Operation control means 56 Person detection means 70 Terminal, 100 Indoor unit, 101 Outdoor unit 200, 202, 204, 205 Wall 201, 203 Ceiling, 206 Floor 207 Horizontal extension of ceiling 201, 300 High ceiling space, 301 Living space 400 Airflow, 401 upward airflow, 500 warm air, 1000 air conditioning system

Claims (7)

  1. 　室内機と、
    　前記室内機から天井までの距離及び前記室内機から床までの距離を計測する距離計測手段と、
    　前記距離計測手段が計測した、前記室内機から天井までの距離に基づき、室内に高さが異なる複数の天井が存在する場合に、前記複数の天井のうち最も低い天井より高い位置の高天井空間を検知する高天井検知手段と、
    　前記距離計測手段が計測した、前記室内機から床までの距離と、前記室内機から壁までの距離と、に基いて、前記床を検知する床検知手段と、
    　前記高天井空間及び前記床の表面温度を計測する温度計測手段と、
    　前記温度計測手段が検知した、前記高天井空間の温度と前記床の表面温度の温度差を算出する温度差算出手段と、
    　前記温度差算出手段が算出した前記温度差が、第１閾値未満の場合あらかじめ定められた運転条件に従って第１気流を発生させ、前記温度差が前記第１閾値以上の場合、少なくとも前記第１気流より温度が低いか、あるいは、上下方向の速度成分が大きいかのいずれかの条件を満たす第２気流を生成する制御を行う制御手段と、
    　を備えることを特徴とする空調システム。     Indoor unit and
    A distance measuring means for measuring the distance from the indoor unit to the ceiling and the distance from the indoor unit to the floor, and
    When there are a plurality of ceilings having different heights in the room based on the distance from the indoor unit to the ceiling measured by the distance measuring means, the high ceiling space at a position higher than the lowest ceiling among the plurality of ceilings. High ceiling detection means to detect
    A floor detecting means for detecting the floor based on the distance from the indoor unit to the floor and the distance from the indoor unit to the wall measured by the distance measuring means.
    A temperature measuring means for measuring the surface temperature of the high ceiling space and the floor,
    A temperature difference calculating means for calculating the temperature difference between the temperature of the high ceiling space and the surface temperature of the floor detected by the temperature measuring means, and
    When the temperature difference calculated by the temperature difference calculating means is less than the first threshold value, a first air flow is generated according to a predetermined operating condition, and when the temperature difference is equal to or more than the first threshold value, at least the first air flow is generated. A control means for controlling to generate a second airflow satisfying either a lower temperature or a larger velocity component in the vertical direction.
    An air conditioning system characterized by being equipped with.
  2. 　前記温度差算出手段は、少なくとも異なる２つ以上の時刻で前記温度差を計測し、前記異なる時刻で計測した前記温度差から、前記温度差の時間変化を算出し、
    　前記制御手段は、前記温度差の時間変化が前記第１閾値と異なる第２閾値以上の場合に、少なくとも前記第２気流より温度が低いか、あるいは、上下方向の速度成分が大きいかのいずれかの条件を満たす第３気流を生成する制御を行う
    　ことを特徴とする請求項１に記載の空調システム。     The temperature difference calculating means measures the temperature difference at at least two or more different times, and calculates the time change of the temperature difference from the temperature difference measured at the different times.
    The control means either has a lower temperature than the second air flow or a larger velocity component in the vertical direction when the time change of the temperature difference is equal to or higher than the second threshold value different from the first threshold value. The air conditioning system according to claim 1, wherein the control for generating a third air flow satisfying the above conditions is performed.
  3. 　前記制御手段は、前記温度差の時間変化が前記第２閾値未満であり、少なくとも異なる２つ以上の時刻で計測された前記温度差のうち、最も後に計測された前記温度差が前記第１閾値以上の場合に前記第２気流を生成する制御を行う
    　ことを特徴とする請求項２に記載の空調システム。     In the control means, the time change of the temperature difference is less than the second threshold value, and the temperature difference measured at the latest among the temperature differences measured at at least two or more different times is the first threshold value. The air conditioning system according to claim 2, wherein the control for generating the second airflow is performed in the above cases.
  4. 　ユーザーが設定した目標温度を取得する目標温度取得手段と、
    　前記室内機に吸い込まれる室内の空気の温度を計測する吸い込み温度の計測手段と、を備え、
    　前記制御手段は、前記第２気流もしくは前記第３気流のいずれかが生成されているときに、前記目標温度取得手段が取得した目標温度より前記吸い込み温度の計測手段が計測した室内の空気の温度が低い場合、前記第１気流より温度が高い第４気流を生成する制御を行う
    　ことを特徴とする請求項２または３に記載の空調システム。     The target temperature acquisition means for acquiring the target temperature set by the user,
    A suction temperature measuring means for measuring the temperature of the indoor air sucked into the indoor unit is provided.
    The control means is the temperature of the indoor air measured by the suction temperature measuring means from the target temperature acquired by the target temperature acquisition means when either the second air flow or the third air flow is generated. The airflow system according to claim 2 or 3, wherein when the temperature is low, control is performed to generate a fourth airflow having a temperature higher than that of the first airflow.
  5. 　前記制御手段は、前記室内機と前記高天井との距離に応じて、前記第２気流及び前記第３気流の上下方向を変化させる制御を行う
    　ことを特徴とする請求項２から４のいずれかに記載の空調システム。     Any of claims 2 to 4, wherein the control means controls to change the vertical direction of the second airflow and the third airflow according to the distance between the indoor unit and the high ceiling. The air conditioning system described in.
  6. 　前記温度計測手段は、前記床と前記高天井との間の空間に存在する物体の表面温度を計測し、
    　前記温度計測手段が計測した物体の表面温度から室内の人の存在を検知し、さらに、前記室内機から見た場合の人がいる方向を検知する人検知手段を備え、
    　前記制御手段は室内に人が存在する場合、前記第２気流あるいは前記第３気流の左右方向を、前記人検知手段が検知した人がいる方向以外の方向に制御する
    　ことを特徴とする請求項２から５のいずれかに記載の空調システム。     The temperature measuring means measures the surface temperature of an object existing in the space between the floor and the high ceiling, and measures the surface temperature.
    A person detecting means for detecting the presence of a person in a room from the surface temperature of an object measured by the temperature measuring means and further detecting the direction of the person when viewed from the indoor unit is provided.
    The control means is characterized in that when a person is present in the room, the left-right direction of the second airflow or the third airflow is controlled in a direction other than the direction in which the person is detected by the person detecting means. The air conditioning system according to any one of 2 to 5.
  7. 　室外にいる人の位置を検知し、前記室外にいる人の位置の時間変化から、室内に人が入室することを予見する入室予見手段を備え、
    　前記制御手段は、前記入室予見手段が室内に人が入室することを予見し、かつ、前記温度差算出手段が算出した前記温度差が前記第１閾値より大きい場合、温度調整を行わず送風のみを行う第５気流を生成する制御を行う
    　ことを特徴とする請求項１から６のいずれかに記載の空調システム。     It is equipped with an entry prediction means that detects the position of a person outside the room and predicts that a person will enter the room from the time change of the position of the person outside the room.
    When the control means predicts that a person will enter the room and the temperature difference calculated by the temperature difference calculation means is larger than the first threshold value, the control means blows air without adjusting the temperature. The air conditioning system according to any one of claims 1 to 6, wherein the control for generating a fifth airflow is performed.
PCT/JP2020/033926 2020-09-08 2020-09-08 Air-conditioning system WO2022054126A1 (en)

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EP20953194.6A EP4212787A4 (en) 2020-09-08 2020-09-08 Air-conditioning system
JP2022548266A JP7415023B2 (en) 2020-09-08 2020-09-08 air conditioning system
PCT/JP2020/033926 WO2022054126A1 (en) 2020-09-08 2020-09-08 Air-conditioning system
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007322062A (en) * 2006-05-31 2007-12-13 Daikin Ind Ltd Air conditioner
JP2012021735A (en) * 2010-07-16 2012-02-02 Mitsubishi Electric Corp Air conditioner
JP2012052680A (en) 2010-08-31 2012-03-15 Panasonic Corp Air conditioner
JP2017101871A (en) * 2015-12-01 2017-06-08 株式会社富士通ゼネラル Air conditioner
JP2019045057A (en) * 2017-08-31 2019-03-22 旭化成ホームズ株式会社 Air conditioning system, building with the air conditioning system, and method for operating the air conditioning system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120018519A (en) * 2010-08-23 2012-03-05 엘지전자 주식회사 An indoor unit of air conditioner and a control method the same
KR101823208B1 (en) * 2015-12-04 2018-01-29 엘지전자 주식회사 Air conditioner and the method controlling the same
JP6719660B2 (en) 2017-04-07 2020-07-08 三菱電機株式会社 Air conditioner
KR102168705B1 (en) * 2018-05-15 2020-10-22 엘지전자 주식회사 Method for controlling a ceiling type air conditioner
JP7361277B2 (en) * 2018-08-30 2023-10-16 パナソニックＩｐマネジメント株式会社 Droplet reach range control system and droplet reach range control method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007322062A (en) * 2006-05-31 2007-12-13 Daikin Ind Ltd Air conditioner
JP2012021735A (en) * 2010-07-16 2012-02-02 Mitsubishi Electric Corp Air conditioner
JP2012052680A (en) 2010-08-31 2012-03-15 Panasonic Corp Air conditioner
JP2017101871A (en) * 2015-12-01 2017-06-08 株式会社富士通ゼネラル Air conditioner
JP2019045057A (en) * 2017-08-31 2019-03-22 旭化成ホームズ株式会社 Air conditioning system, building with the air conditioning system, and method for operating the air conditioning system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP4212787A4

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