WO2020003529A1 - Air conditioning system, air conditioning method, and program - Google Patents

Air conditioning system, air conditioning method, and program Download PDF

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Publication number
WO2020003529A1
WO2020003529A1 PCT/JP2018/024920 JP2018024920W WO2020003529A1 WO 2020003529 A1 WO2020003529 A1 WO 2020003529A1 JP 2018024920 W JP2018024920 W JP 2018024920W WO 2020003529 A1 WO2020003529 A1 WO 2020003529A1
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WO
WIPO (PCT)
Prior art keywords
air
heat exchanger
indoor
heat exchange
control unit
Prior art date
Application number
PCT/JP2018/024920
Other languages
French (fr)
Japanese (ja)
Inventor
隼人 森
内藤　宏治
浦田　和幹
Original Assignee
日立ジョンソンコントロールズ空調株式会社
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Application filed by 日立ジョンソンコントロールズ空調株式会社 filed Critical 日立ジョンソンコントロールズ空調株式会社
Priority to JP2020527158A priority Critical patent/JP6971400B2/en
Priority to PCT/JP2018/024920 priority patent/WO2020003529A1/en
Publication of WO2020003529A1 publication Critical patent/WO2020003529A1/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
    • F24F11/62—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
    • F24F11/64—Electronic processing using pre-stored data
    • 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
    • F24F11/65—Electronic processing for selecting an operating mode
    • 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

Definitions

  • the present invention relates to an air conditioning system and the like.
  • Patent Literature 1 describes an air conditioner in which a temperature and humidity sensor is provided in an indoor unit.
  • Patent Document 1 it is possible to perform highly comfortable air conditioning based on the detection value of the temperature and humidity sensor.
  • the manufacturing cost is increased because the sensor elements for detecting the temperature and the humidity are provided. Considering such a situation, if a configuration is adopted in which only the temperature of the indoor air is detected without detecting the humidity of the indoor air, the comfort of the air conditioning may be reduced.
  • an object of the present invention is to provide an air-conditioning system or the like having high comfort and low manufacturing cost.
  • the present invention provides a method for controlling the temperature of air flowing to an indoor heat exchanger when the amount of heat exchanged on the air side is smaller than the amount of heat exchanged on the refrigerant side.
  • the controller estimates the humidity of the air heading to the indoor heat exchanger based on the temperature of the refrigerant, the refrigerant-side heat exchange amount, and the air-side heat exchange amount, and performs air conditioning control based on the humidity.
  • FIG. 1 is a schematic configuration diagram including an air conditioning system according to an embodiment of the present invention.
  • 1 is a configuration diagram including an air conditioner of an air conditioning system according to an embodiment of the present invention.
  • It is a functional block diagram of an air-conditioning management device of an air-conditioning system concerning an embodiment of the present invention.
  • FIG. 4 is an explanatory diagram showing a refrigerant-side heat exchange amount Q ref and an air-side heat exchange amount Q air when heat exchange of air in an indoor heat exchanger is only a sensible heat load in the air conditioning system according to the embodiment of the present invention.
  • It is a flowchart which shows the process of the control part with which the air-conditioning management apparatus of the air-conditioning system concerning embodiment of this invention is provided.
  • FIG. 4 is an air line diagram relating to temperature and humidity of air on the suction side and the air outlet side of the indoor heat exchanger in the air conditioning system according to the embodiment of the present invention. It is a schematic structure figure containing an air-conditioning system concerning a modification of the present invention.
  • FIG. 1 is a schematic configuration diagram including an air conditioning system W according to the embodiment.
  • the illustration of the pipe J is simplified, and the pipe that guides the refrigerant from the outdoor unit Uo to the four indoor units Ui and the pipe that guides the refrigerant from the four indoor units Ui to the outdoor unit Uo are common. This is shown by a solid line (pipe J).
  • the air conditioning system W is a system for performing air conditioning, and includes an air conditioner 100 and an air conditioning management device 200.
  • the air-conditioning management device 200 may include a plurality of servers.
  • the mobile terminal 300 illustrated in FIG. 1 is a terminal such as a smartphone, a tablet, and a mobile phone owned by a user of the air conditioner 100, and can communicate with the air conditioning management device 200 via the network N. ing.
  • the air conditioner 100 is a device that performs air conditioning such as a cooling operation and a heating operation.
  • FIG. 1 illustrates, as an example, a multi-type air conditioner 100 in which an outdoor unit Uo of a top blowing type and four indoor units Ui of a ceiling embedded type are connected via a pipe J. .
  • the outdoor unit Uo is connected to the indoor unit Ui via the communication line M, and is also connected to the air conditioning management device 200 via the communication line M.
  • FIG. 2 is a configuration diagram including the refrigerant circuit F of the air conditioner 100.
  • FIG. 2 two of the four indoor units Ui (see FIG. 1) are illustrated, and illustration of the remaining two units is omitted.
  • FIG. 2 the flow of air in the outdoor heat exchanger 12 and the indoor heat exchanger 16 is indicated by outline arrows.
  • the air conditioner 100 includes a compressor 11, an outdoor heat exchanger 12, an outdoor fan 13, an outdoor expansion valve 14, and a four-way valve 15 as devices provided in the outdoor unit Uo.
  • the compressor 11 is a device that compresses a low-temperature and low-pressure gas refrigerant and discharges it as a high-temperature and high-pressure gas refrigerant.
  • a compressor 11 for example, a scroll compressor or a rotary compressor is used.
  • the outdoor heat exchanger 12 is a heat exchanger in which heat exchange is performed between the refrigerant flowing through the heat transfer tube (not shown) and the outside air sent from the outdoor fan 13.
  • One end g1 of the outdoor heat exchanger 12 is connected to the suction side or the discharge side of the compressor 11 by switching the four-way valve 15, and the other end g2 is connected to the liquid side pipe J1.
  • the outdoor fan 13 is a fan that sends outside air to the outdoor heat exchanger 12.
  • the outdoor fan 13 includes an outdoor fan motor 13a as a driving source, and is arranged near the outdoor heat exchanger 12.
  • the outdoor expansion valve 14 is an electronic expansion valve that adjusts the flow rate of the refrigerant flowing through the outdoor heat exchanger 12 and reduces the pressure of the refrigerant when the outdoor heat exchanger 12 functions as an evaporator. It is provided in.
  • the four-way valve 15 is a valve that switches the flow path of the refrigerant according to the operation mode during air conditioning.
  • the air conditioner 100 includes an indoor heat exchanger 16, an indoor fan 17, an air filter 18, and an indoor expansion valve 19 as devices provided in the indoor unit Ui.
  • the indoor heat exchanger 16 is a heat exchanger in which heat is exchanged between a refrigerant flowing through a heat transfer tube (not shown) and indoor air (air in a space to be air-conditioned) sent from an indoor fan 17. It is.
  • One end h1 of the indoor heat exchanger 16 is connected to the gas side pipe J2, and the other end h2 is connected to the liquid side pipe J3.
  • the indoor fan 17 is a fan that sends indoor air to the indoor heat exchanger 16.
  • the indoor fan 17 has an indoor fan motor 17a as a driving source, and is arranged near the indoor heat exchanger 16.
  • the air filter 18 is a filter that collects dust from air flowing toward the indoor heat exchanger 16 as the indoor fan 17 is driven, and is arranged near the indoor heat exchanger 16 (air suction side).
  • the indoor expansion valve 19 is an electronic expansion valve that adjusts the flow rate of the refrigerant flowing through the indoor heat exchanger 16 and reduces the pressure of the refrigerant when the indoor heat exchanger 16 functions as an evaporator. It is provided in.
  • the other indoor units Ui have the same configuration.
  • the liquid-side connection part K1 connects the plurality of liquid-side pipes J3 connected one-to-one to each indoor unit Ui, and the liquid-side pipes J1 connected to the other end g2 of the outdoor heat exchanger 12. It is.
  • the gas side connection part K2 connects a plurality of gas side pipes J2 connected one-to-one to each indoor unit Ui, and a gas side pipe J4 connected to the four-way valve 15 of the outdoor unit Uo. .
  • the refrigerant circulates in the refrigerant circuit F in a well-known heat pump cycle in accordance with the operation mode during air conditioning.
  • the compressor 11, the outdoor heat exchanger 12 (condenser), the outdoor expansion valve 14 (expansion valve), the indoor expansion valve 19 (expansion valve), and the indoor heat exchanger 16 (evaporator) are sequentially operated.
  • the refrigerant circulates through.
  • the compressor 11, the indoor heat exchanger 16 (condenser), the indoor expansion valve 19 (expansion valve), the outdoor expansion valve 14 (expansion valve), and the outdoor heat exchanger 12 (evaporator) are sequentially operated.
  • the refrigerant circulates through.
  • the air conditioning system W includes the refrigerant circuit F in which the refrigerant circulates sequentially through the compressor 11, the “condenser”, the “expansion valve”, and the “evaporator”.
  • One of the units is an outdoor heat exchanger 12 and the other is an indoor heat exchanger 16.
  • the outdoor unit Uo is provided with a suction pressure sensor 21, a suction temperature sensor 22, a discharge pressure sensor 23, and a discharge temperature sensor 24.
  • the suction pressure sensor 21 is a sensor that detects the pressure (suction pressure) of the refrigerant on the suction side of the compressor 11.
  • the suction temperature sensor 22 is a sensor that detects the temperature of the refrigerant (suction temperature) on the suction side of the compressor 11.
  • the discharge pressure sensor 23 is a sensor that detects the pressure (discharge pressure) of the refrigerant on the discharge side of the compressor 11.
  • the discharge temperature sensor 24 is a sensor that detects the temperature (discharge temperature) of the refrigerant on the discharge side of the compressor 11. The detection values of the suction pressure sensor 21, the suction temperature sensor 22, the discharge pressure sensor 23, and the discharge temperature sensor 24 are output to the air conditioning management device 200 via the outdoor control circuit 31.
  • the indoor unit Ui is provided with refrigerant temperature sensors 25 and 26, an intake air temperature sensor 27, and an outlet air temperature sensor 28.
  • the refrigerant temperature sensor 25 is a sensor that detects the temperature of the refrigerant flowing near one end h1 of the indoor heat exchanger 16.
  • the other refrigerant temperature sensor 26 is a sensor that detects the temperature of the refrigerant flowing near the other end h2 of the indoor heat exchanger 16.
  • the suction air temperature sensor 27 is a sensor that detects the temperature of air on the air suction side (inlet side) of the indoor heat exchanger 16.
  • the blowout air temperature sensor 28 is a sensor that detects the temperature of air on the air blowout side (outlet side) of the indoor heat exchanger 16. Respective detection values of the refrigerant temperature sensors 25 and 26, the suction air temperature sensor 27, and the blow-off air temperature sensor 28 are output to the outdoor control circuit 31 and the air conditioning management device 200 via the indoor control circuit 32.
  • the outdoor unit Uo is provided with an outdoor control circuit 31, and the indoor unit Ui is provided with an indoor control circuit 32.
  • the outdoor control circuit 31 and the indoor control circuit 32 include electronic circuits such as a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and various interfaces. . Then, the program stored in the ROM is read out and expanded in the RAM, and the CPU executes various processes.
  • a CPU Central Processing Unit
  • ROM Read Only Memory
  • RAM Random Access Memory
  • the outdoor control circuit 31 controls the compressor 11, the outdoor fan 13, the outdoor expansion valve 14, and the like based on the detection value of each sensor and a command from the air conditioning management device 200, and outputs a predetermined signal to the indoor control circuit 32.
  • the indoor control circuit 32 controls the indoor fan 17 and the indoor expansion valve 19 based on a signal received from the outdoor control circuit 31 and a command from the air conditioning management device 200.
  • the remote controller Re exchanges predetermined information with the indoor control circuit 32 by infrared communication or the like. For example, signals related to the operation / stop of the air conditioning, the setting of the operation mode, the timer, and the change of the set temperature are transmitted from the remote controller Re to the indoor control circuit 32.
  • the signal transmitted from the indoor control circuit 32 to the remote controller Re includes, for example, information on the temperature and humidity of indoor air.
  • the air conditioning management device 200 illustrated in FIG. 2 has a function of managing air conditioning by the air conditioner 100 and, as described later, estimating the humidity of indoor air based on a detection value of each sensor. .
  • the air-conditioning management device 200 is configured to include electronic circuits such as a CPU, a ROM, a RAM, and various interfaces, and is connected to the outdoor control circuit 31 and the indoor control circuit 32 via a communication line.
  • FIG. 3 is a functional block diagram of the air conditioning management device 200 (see FIG. 2 as appropriate).
  • the air conditioning management device 200 includes a storage unit 210, a control unit 220, and a notification unit 230.
  • the storage unit 210 stores rotation speed-design airflow information 211, design volumetric efficiency information 212, and sensible heat load information 213 in addition to a predetermined program.
  • the rotation speed-design airflow information 211 is information indicating a predetermined design airflow corresponding to the rotation speed of the indoor fan 17.
  • the “design airflow” described above is an airflow of the indoor unit Ui obtained by a preliminary experiment or the like based on the specifications of the indoor fan 17 and the indoor heat exchanger 16.
  • the design volumetric efficiency information 212 shown in FIG. 3 is information indicating the design volumetric efficiency of the compressor 11 (see FIG. 2).
  • the “design volumetric efficiency” is a volumetric efficiency based on the specifications of the compressor 11, and is calculated based on a rotation speed of a motor (not shown) of the compressor 11 and the like.
  • the sensible heat load information 213 stored in the storage unit 210 will be described later.
  • the control unit 220 performs a predetermined process based on a detection value of each sensor, data of the storage unit 210, and the like. As illustrated in FIG. 3, the control unit 220 includes a refrigerant-side heat exchange amount estimating unit 221, an air-side heat exchange amount estimating unit 222, a learning unit 223, a comparing unit 224, a determining unit 225, and a humidity estimating unit. 226 and an air-conditioning control unit 227.
  • the “refrigerant side” of the refrigerant side heat exchange amount Qref means a heat exchange amount estimated based on a detected value such as a temperature and a pressure of the refrigerant.
  • the air-side heat exchange amount estimating unit 222 determines the indoor temperature based on the rotation speed-design airflow information 211 in addition to the temperature of the air on the suction side and the air outlet side of the indoor heat exchanger 16 and the rotation speed of the indoor fan 17. It is estimated as the air-side heat exchange amount Q air in the heat exchanger 16.
  • the “air side” of the air side heat exchange amount Q air means a heat exchange amount estimated based on the air temperature or the like.
  • the temperature of the heat transfer tubes (not shown) of the indoor heat exchanger 16 may fall below the dew point.
  • a latent heat load is generated that changes the state of water vapor in the air into water. Since this latent heat load is not reflected in the temperature change of the air, the air-side heat exchange amount Q air (sensible heat) based on the temperature difference between the suction side and the blow-out side air is larger than the refrigerant side heat exchange amount Q ref (total heat). Is also smaller.
  • the presence or absence of latent heat is determined based on the magnitude relationship between the refrigerant-side heat exchange amount Qref and the air-side heat exchange amount Qair .
  • Learning unit 223 shown in FIG. 3 does not contain latent heat exchange of the air in the indoor heat exchanger 16 when (sensible heat in which only) It is known, air to refrigerant heat exchange quantity Q ref The ratio (Q air / Q ref ) of the side heat exchange amount Q air is learned.
  • Figure 4 is an explanatory diagram showing a refrigerant-side heat exchange quantity Q ref and the air-side heat exchange rate Q air when the heat exchange of the air in the indoor heat exchanger is only the sensible heat load.
  • the horizontal axis of FIG. 4 is a refrigerant-side heat exchange quantity Q ref estimated by the refrigerant side heat exchange amount estimating unit 221 (see FIG. 3).
  • the vertical axis in FIG. 4 is the air-side heat exchange amount Q air estimated by the air-side heat exchange amount estimation unit 222 (see FIG. 3).
  • a plurality of points shown in FIG. 4 are data obtained during a learning period in which it is known that the heat exchange of air in the indoor heat exchanger 16 is only a sensible heat load and there is almost no latent heat load.
  • a cooling operation in which the set temperature is equal to or higher than a predetermined value is given.
  • the learning unit 223 uses a plurality of refrigerant-side heat exchange amounts Qref and air-side heat exchange amounts Q air obtained during a predetermined learning period, for example, based on the least squares method, as shown in FIG.
  • the mathematical formula of the straight line L1 shown is derived. Note that the learning unit 223 may calculate the moving average of the ratio (Q air / Q ref ) obtained in time series instead of the mathematical expression of the straight line L1.
  • the total heat is substantially equal to the sensible heat.
  • the refrigerant side heat exchange amount Q ref (total heat) and the air side heat exchange amount Q air (sensible heat) become substantially equal, and the slope of the straight line L1 becomes a value close to “1”.
  • the learning unit 223 determines, for example, that the predetermined range is lower than the straight line L11 having the slope (a + b1) and higher than the straight line L12 having the slope (a ⁇ b1). To learn. To explain from another viewpoint, the learning unit 223 determines that the ratio (Q air / Q ref ) when the heat exchange in the indoor heat exchanger 16 is almost only sensible heat is (a ⁇ b 1) ⁇ (Q air / Sensible heat load information 213 (see FIG. 3) indicating the range of (Q ref ) ⁇ (a + b1) is stored in the storage unit 210.
  • the comparison unit 224 illustrated in FIG. 3 compares the magnitude of the refrigerant-side heat exchange amount Qref with the magnitude of the air-side heat exchange amount Qair during the air-conditioning operation.
  • the determination unit 225 determines the presence or absence of latent heat with respect to the heat exchange of the air in the indoor heat exchanger 16 based on the comparison result of the comparison unit 224.
  • the humidity estimating unit 226 estimates the humidity of the air going to the indoor heat exchanger 16.
  • the air-conditioning control unit 227 performs a predetermined air-conditioning control based on the estimation result of the humidity estimating unit 226 and the like.
  • the notifying unit 230 notifies the estimation result of the humidity estimating unit 226 and the like.
  • a display is an example of such a notification unit 230.
  • the notification unit 230 may have a predetermined communication function, and may notify the remote controller Re (see FIG. 2) and the user's portable terminal 300 (see FIG. 1) of the estimation result and the like of the humidity estimation unit 226.
  • FIG. 5 is a flowchart showing the processing of the control unit 220 provided in the air-conditioning management device 200 (see FIGS. 2 and 3 as appropriate). At the time of "START" in FIG. 5, it is assumed that the sensible heat load information 213 has already been learned. Also, it is assumed that the air conditioner 100 is performing the cooling operation based on a command from the remote controller Re during the processing in FIG.
  • the control unit 220 when estimating the humidity of the indoor air (that is, when performing the processing of S101 to S106), the control unit 220 causes the heat exchange of the air in the indoor heat exchanger 16 to include the latent heat (the indoor heat exchanger 16). It is preferable to perform a process of making the indoor heat exchanger 16 function as an evaporator so that the temperature of the indoor heat exchanger 16 falls below the dew point. For example, the control unit 220 may start the cooling operation at a set temperature lower than a predetermined temperature based on a command from the remote controller Re. This is because, as described later, the humidity of the room air can be estimated without a humidity sensor (not shown) (S106).
  • the refrigerant-side heat exchange amount estimating unit 221 estimates the refrigerant side heat exchange amount Q ref of the indoor heat exchanger 16 (the refrigerant heat exchanger estimation step). More specifically, the control unit 220 firstly controls the compressor 11 based on the detection value of the suction pressure sensor 21, the detection value of the suction temperature sensor 22, and the degree of superheat of the refrigerant on the suction side of the compressor 11. Calculate the refrigerant density on the suction side. It is assumed that a predetermined value of the refrigerant superheat degree on the suction side of the compressor 11 is stored in advance based on a previous experiment.
  • control unit 220 determines the refrigerant density on the suction side of the compressor 11, the stroke volume of the compressor 11, the rotation speed of the compressor motor (not shown), and the designed volumetric efficiency of the compressor 11.
  • the refrigerant circulation amount per unit time in the refrigerant circuit F is calculated. It is assumed that the stroke volume of the compressor 11 is known. Further, the design volumetric efficiency of the compressor 11 is estimated based on the above-described design volumetric efficiency information 212 (see FIG. 3).
  • control unit 220 determines one end and the other end of the indoor heat exchanger 16 (that is, the inlet side and the outlet side) based on the detection value of the discharge pressure sensor 23 and the detection values of the refrigerant temperature sensors 25 and 26. Side), the difference in specific enthalpy of the refrigerant is calculated.
  • the control unit 220 determines the refrigerant-side heat exchange amount Q of the indoor heat exchanger 16 based on the specific enthalpy difference of the refrigerant at one end and the other end of the indoor heat exchanger 16 and the above-described refrigerant circulation amount. Estimate ref . As described above, the control unit 220 estimates the refrigerant-side heat exchange amount Qref in the indoor heat exchanger 16 based on the information including the temperatures of the refrigerant at one end and the other end of the indoor heat exchanger 16.
  • step S102 the control unit 220 estimates the air-side heat exchange amount Q air of the indoor heat exchanger 16 by the air-side heat exchange amount estimation unit 222 (air-side heat exchange amount estimation step). More specifically, the control unit 220 first calculates the design airflow corresponding to the rotation speed of the indoor fan 17 with reference to the rotation speed-design airflow information 211. Then, the control unit 220 determines the air-side heat exchange amount Q air of the indoor heat exchanger 16 based on the design air volume, the detection value of the intake air temperature sensor 27, and the detection value of the blow-out air temperature sensor 28. Is estimated.
  • control unit 220 determines the temperature of the air flowing toward the indoor heat exchanger 16, the temperature of the air that has exchanged heat in the indoor heat exchanger 16, and the design airflow corresponding to the rotation speed of the indoor fan 17.
  • the air-side heat exchange amount Q air in the indoor heat exchanger 16 is estimated.
  • step S103 the control unit 220 causes the comparing unit 224 to determine whether the air-side heat exchange amount Q air is smaller than the refrigerant-side heat exchange amount Q ref .
  • FIG. 6 is an explanatory diagram showing an example of points (Q ref , Q air ) in the case where latent heat is included in heat exchange in the indoor heat exchanger.
  • the horizontal axis in FIG. 6 is the refrigerant-side heat exchange amount Qref
  • the vertical axis is the air-side heat exchange amount Qair .
  • the hatched area shown in FIG. 6 is a range in which the heat exchange of the air in the indoor heat exchanger 16 is assumed to be only the sensible heat load.
  • the air-side heat exchange amount Q1 air is smaller than the refrigerant-side heat exchange amount Q1 ref , and the point (Q1 ref , Q1 air ) deviates from a predetermined range of a hatched portion.
  • latent heat was included in the heat exchange of air in the indoor heat exchanger 16. That is, when the water vapor contained in the air sucked into the indoor unit Ui (see FIG. 2) condenses on the indoor heat exchanger 16 (see FIG. 2), latent heat is generated.
  • step S104 the control unit 220 determines whether or not the ratio (Q air / Q ref ) is outside a predetermined range.
  • FIG. 7 is an explanatory diagram showing an example of a temporal transition of the ratio (Q air / Q ref ).
  • the horizontal axis represents time
  • the vertical axis represents the ratio (Q air / Q ref ).
  • ⁇ ⁇ (Q air / Q ref ) ⁇ ⁇ is the range of the ratio (Q air / Q ref ) when the heat exchange of the air in the indoor heat exchanger 16 is only the sensible heat load. Is set. This is the sensible heat load information 213 (see FIG. 3).
  • the ratio (Q air / Q ref ) is smaller than the predetermined value ⁇ at each of the times t1, t2, and t3.
  • the control unit 220 calculates a moving average of a plurality of ratios (Q air / Q ref ) calculated in time series, and determines whether the moving average deviates from a predetermined range ⁇ ⁇ (Q air / Q ref ) ⁇ ⁇ . The determination may be made (S104). In addition, when the control unit 220 calculates the ratio (Q air / Q ref ), the approximate straight line L2 of the plurality of points (Q ref , Q air ) shown in FIG. 6 is calculated by the least square method, and the approximate straight line L2 is calculated. It may be determined whether the inclination is out of the predetermined range ⁇ ⁇ (Q air / Q ref ) ⁇ ⁇ (S104).
  • step S104 the process of the control unit 220 proceeds to step S105.
  • the control unit 220 causes the determination unit 225 to determine that the heat exchange of the air in the indoor heat exchanger 16 includes latent heat ("latent heat is present").
  • step S106 the control unit 220 causes the humidity estimating unit 226 to estimate the humidity of the air flowing toward the indoor heat exchanger 16 (humidity estimating step).
  • FIG. 8 is an air line diagram relating to the temperature and humidity of the air on the suction side and the air outlet side of the indoor heat exchanger.
  • the horizontal axis in FIG. 8 is the dry-bulb temperature of the air, and the vertical axis is the absolute humidity of the air.
  • a curve R is a curve indicating a state where the relative humidity is 100 [%].
  • point P2 is an example of the temperature and humidity of the suction air flowing toward the indoor heat exchanger 16
  • point P3 indicates the temperature and humidity of the blown air after the suction air exchanges heat with the indoor heat exchanger 16. I have.
  • the temperature of the air on the blow-out side falls below the dew point. That is, on the psychrometric chart, the point P3 indicating the state of the blown air is on the curve R at a relative humidity of 100%. Therefore, based on the detection value of the blow-off air temperature sensor 28 (see FIG. 2) (at the point P3, the dry-bulb temperature is 10 ° C.) and the determination result of “latent heat” (S105), the air-line diagram is used. The position of the point P3 is determined.
  • the control unit 220 determines the suction air based on the ratio (Q air / Q ref ) of the air side heat exchange amount Q air (sensible heat) to the refrigerant side heat exchange amount Q ref (total heat: sensible heat + latent heat). (The position of the point P2) is estimated. It is assumed that data corresponding to the psychrometric chart in FIG. 8 is stored in advance in the storage unit 210 (see FIG. 3) as a data table, for example.
  • the control unit 220 estimates the humidity of the indoor air (S106). That is, the control unit 220 determines the temperature of the air going to the indoor heat exchanger 16, the temperature of the air that has exchanged heat in the indoor heat exchanger 16, the refrigerant-side heat exchange amount Q ref , and the air-side heat exchange amount Q air. Then, the humidity of the air going to the indoor heat exchanger 16 is estimated (S106). Thereby, the humidity of the indoor air can be estimated even if the humidity sensor is not provided in the indoor unit Ui (see FIG. 2), so that the manufacturing cost of the air conditioner 100 can be reduced.
  • step S107 of FIG. 5 the control unit 220 determines whether the humidity (for example, relative humidity) calculated in step S106 is equal to or more than a predetermined value.
  • This predetermined value is a threshold value serving as a criterion for determining whether or not to perform the dehumidifying operation (S108), and is set in advance. If the humidity is equal to or higher than the predetermined value (S107: Yes), the process of the control unit 220 proceeds to step S108.
  • control unit 220 executes a dehumidifying operation (air conditioning control step). For example, when performing the dehumidifying operation, the control unit 220 generates a command signal for reducing the opening degree of the indoor expansion valve 19 and transmits the command signal to the air conditioner 100. Thereby, the evaporation temperature of the refrigerant flowing into the indoor heat exchanger 16 (evaporator) decreases, and the degree of superheat of the refrigerant increases, so that the dehumidifying operation can be performed.
  • a dehumidifying operation air conditioning control step
  • control unit 220 may generate a command signal for decreasing the rotation speed of the indoor fan 17 and transmit the command signal to the air conditioner 100. Even with such control, the degree of superheat of the refrigerant flowing into the indoor heat exchanger 16 (evaporator) increases, so that the dehumidifying operation can be performed. After performing the dehumidifying operation (S108) for a predetermined time, the control unit 220 may perform the cooling operation again.
  • step S107 If the humidity is less than the predetermined value in step S107 (S107: No), the control unit 220 ends the series of processes without performing the dehumidifying operation (END). That is, the control unit 220 continues the cooling operation without performing the dehumidifying operation. This is because when the humidity is low, it is not particularly necessary to perform the dehumidifying operation.
  • step S103 When Q ref ⁇ Q air is satisfied in step S103 (S103: No), or when the ratio (Q air / Q ref ) is within a predetermined range in step S104 (S104: No), the process of the control unit 220 is performed. Proceed to step S109.
  • step S109 the control unit 220 determines by the determination unit 225 that the heat exchange of the air in the indoor heat exchanger 16 does not include latent heat (“no latent heat”). In this case, since the humidity of the room air is not so high, it is not particularly necessary to perform the dehumidification operation.
  • the control unit 220 ends a series of processes (END).
  • the history information of the humidity estimated in step S106 may be stored in the storage unit 210 (see FIG. 3). It is preferable that the control unit 220 transmits the humidity history information stored in the storage unit 210 to the remote controller Re (see FIG. 2) or the portable terminal 300 (terminal: see FIG. 1). Thereby, the user can easily grasp the temporal change of the humidity of the indoor air. Further, the control unit 220 may transmit the history information of the humidity and the ratio (Q air / Q ref ) of the indoor air to a remote monitoring center (not shown). The computer (not shown) of the remote monitoring center is also included in the “terminal”.
  • the air flow in the indoor heat exchanger 16 is determined.
  • the control unit 220 determines whether or not latent heat is included in the heat exchange (S105, S109). When it is determined that latent heat is included in the heat exchange (S105), the control unit 220 estimates the humidity of the room air (S106).
  • the controller 220 appropriately performs the dehumidifying operation based on the humidity of the indoor air (S108 in FIG. 5), so that highly comfortable air conditioning can be performed.
  • the control of the present embodiment is effective.
  • the air conditioning system W according to the present invention has been described in the embodiments, but the present invention is not limited to these descriptions, and various changes can be made.
  • the air-side heat exchange amount Q air is smaller than the refrigerant-side heat exchange amount Q ref (S103: Yes in FIG. 5), and the ratio (Q air / Q ref ) is out of the predetermined range.
  • the control unit 220 estimates the humidity (S106) has been described, but the present invention is not limited to this.
  • step S105 determines whether the air-side heat exchange amount Q air is smaller than the refrigerant-side heat exchange amount Q ref .
  • the control unit 220 estimates the humidity of the air flowing toward the indoor heat exchanger 16. You may do so. Even in such processing, it is possible to appropriately calculate the humidity of the room air.
  • the control unit 220 includes the learning unit 223 (see FIG. 3) has been described, but the learning unit 223 may be omitted.
  • the ratio (Q air / Q ref ) is substantially equal to “1” in the case where the air conditioning is performed under the operating condition that the latent heat is not included in the heat exchange of the air in the indoor heat exchanger 16, the control is performed.
  • the unit 220 may estimate the humidity of the room air.
  • the control unit 220 estimates the humidity of the indoor air. As a result, the error relating to the estimation of the humidity of the indoor air can be further reduced.
  • the control unit 220 may perform the following process regarding the process of estimating the humidity of the room air.
  • the control unit 220 determines whether one of the refrigerant-side heat exchange amount Qref and the air-side heat exchange amount Qair is larger than the other.
  • the aforementioned “predetermined range” may be corrected. That is, the control unit 220 corrects (learns) the “predetermined range” based on the ratio (Q air / Q ref ) when latent heat is not included in the heat exchange of the air in the indoor heat exchanger 16. You may make it. Thereby, even if dust adheres to the indoor heat exchanger 16 or the like or the compressor 11 deteriorates, the control unit 220 can estimate the humidity of the indoor air with high accuracy.
  • the configuration in which the air-conditioning management device 200 outputs a command signal to the air conditioner 100 has been described.
  • the configuration is not limited to this.
  • the air conditioning management device 200 may be configured to output a command signal to both the air conditioner 100 and the dehumidifier 400 (see FIG. 9).
  • FIG. 9 is a schematic configuration diagram including an air conditioning system WA according to a modification.
  • the air conditioning system WA includes an air conditioner 100, an air conditioning management device 200, and a dehumidifier 400.
  • the air conditioning management device 200 is connected to the outdoor unit Uo and the indoor unit Ui via the communication line M, and is also connected to the dehumidifier 400 via the communication line M. That is, the dehumidifier 400 provided in the air-conditioned space from which the air-conditioned air is blown out with the driving of the indoor fan 17 and the control unit 220 (see FIG. 3) of the air-conditioning management device 200 can communicate with each other.
  • the dehumidifier 400 shown in FIG. 9 is a device that mainly performs dehumidification. Since the configuration of the dehumidifier 400 is well known, a detailed description is omitted.
  • the control unit 220 (see FIG. 3) of the air conditioning management device 200 outputs a signal for performing the dehumidifying operation to the dehumidifier 400 when the humidity of the room air is less than the predetermined value.
  • the dehumidifying operation is performed only by the dehumidifier 400, so that the efficiency of the air conditioning can be increased.
  • the air conditioner 100 may be in a stopped state, or may be performing a cooling operation or the like.
  • the control unit 220 outputs a signal for performing the dehumidifying operation to the dehumidifier 400, and performs the dehumidifying operation using the refrigerant circuit F (see FIG. 2). Do.
  • the operation of the air conditioner 100 can compensate for the dehumidification that the dehumidifier 400 lacks.
  • the control unit 220 May be performed. That is, the control unit 220 predicts the future humidity based on the history information of the indoor air humidity, and determines the set temperature of the cooling operation when performing the above-described processing in the future based on the prediction result. You may. As an example, the control unit 220 calculates a moving average of the indoor air humidity estimated in the last several days, and based on this moving average, sets the temperature at the time of the cooling operation when estimating the humidity next time. To determine. As a result, it is possible to prevent the set temperature of the cooling operation when estimating the humidity from being too high or too low.
  • control unit 220 may reduce the air volume as compared with the normal cooling operation, or It is preferable to make the wind direction in the vertical direction of the machine Ui (see FIG. 2) more horizontal than in the normal cooling operation. Thereby, when estimating the humidity of the indoor air, it is possible to suppress the cool air from being blown down, and thereby to improve the comfort for the user.
  • the control unit 220 when performing the process of making the indoor heat exchanger 16 function as an evaporator so that latent heat is included in the heat exchange of air, the control unit 220 causes the indoor heat exchanger 16 to function as an evaporator, Preferably, the vessel 16 is frozen. More specifically, in response to a command from the control unit 220, the outdoor control circuit 31 and the indoor control circuit 32 drive the compressor 11, and further increase the opening degree of the indoor expansion valve 19 as compared with a normal cooling operation. Make it smaller. As a result, the refrigerant having a low pressure and a low evaporation temperature flows into the indoor heat exchanger 16, so that moisture in the air is frosted on the indoor heat exchanger 16, and the frost and ice easily grow. At this time, since the latent heat is reliably included in the heat exchange of the air in the indoor heat exchanger 16, the humidity of the indoor air can be estimated with high accuracy.
  • the outdoor control circuit 31 and the indoor control circuit 32 defrost the indoor heat exchanger 16 after freezing the indoor heat exchanger 16.
  • frost and ice of the indoor heat exchanger 16 are naturally thawed at room temperature, and a large amount of the frost and ice travel along the fins (not shown) of the indoor heat exchanger 16. Water runs down. As a result, dust in the indoor heat exchanger 16 is washed away.
  • Such a method of cleaning the indoor heat exchanger 16 is referred to as “freeze cleaning”. Instead of the above-mentioned "freeze washing", the indoor heat exchanger 16 may be made to function as an evaporator, and the indoor heat exchanger 16 may be condensed.
  • the dust of the indoor heat exchanger 16 is also washed away by such “condensation washing”. Further, it is preferable that the control unit 220 estimates the humidity of the indoor air when performing the “condensation cleaning”. Even with such a method, the humidity of the room air can be estimated with high accuracy.
  • the control unit 220 may start the process of estimating the humidity of the room air in response to a command from the remote controller Re or the portable terminal 300.
  • the estimation result of the indoor air humidity can be displayed on the remote controller Re or the like.
  • the configuration in which the air-conditioning system W includes the air-conditioning management device 200 has been described, but is not limited thereto.
  • the air-conditioning management device 200 may be omitted, and the outdoor control circuit 31 (control unit) or the indoor control circuit 32 (control unit) may perform a series of processes related to estimation of humidity.
  • the multi-type air conditioner 100 provided with the plurality of indoor units Ui has been described, but the present invention is not limited to this.
  • the embodiments can be applied to various types of air conditioners, in addition to a wall-mounted air conditioner (not shown) provided with one indoor unit and one outdoor unit.
  • a program for causing a computer to execute processing such as estimation of humidity can be provided via a communication line, and can be written and distributed on a recording medium such as a CD-ROM. Is also possible.

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Abstract

An air conditioning system is provided which has excellent comfort and low manufacturing cost. This air conditioning system is provided with a refrigerant circuit and with a control unit (220) which controls air conditioning. When the air-side heat exchange amount is lower than the refrigerant-side heat exchange amount, the control unit (220) estimates the humidity of air moving towards an indoor heat exchanger on the basis of the temperature of the air moving towards the indoor heat exchanger, the temperature of air that has undergone heat exchange in the indoor heat exchanger, the refrigerant-side heat exchange amount and the air-side heat exchange amount, and controls air conditioning on the basis of said humidity.

Description

空調システム、空調方法、及びプログラムAir conditioning system, air conditioning method, and program
　本発明は、空調システム等に関する。 The present invention relates to an air conditioning system and the like.
　空気調和機による空調に関して、室内空気（空調対象空間）の温度の他に、室内空気の湿度も空調の快適性に影響を及ぼすことが知られている。例えば、特許文献１には、室内機に温湿度センサが設けられた空気調和機について記載されている。 空調 Regarding air conditioning by an air conditioner, it is known that, in addition to the temperature of the room air (the space to be air-conditioned), the humidity of the room air also affects the comfort of the air conditioning. For example, Patent Literature 1 describes an air conditioner in which a temperature and humidity sensor is provided in an indoor unit.
特開２０１７－１５０７６４号公報JP 2017-150764 A
　特許文献１に記載の技術では、温湿度センサの検出値に基づき、快適性の高い空調を行うことが可能になる。しかしながら、特許文献１に記載の技術では、温度・湿度のそれぞれを検出するセンサ素子が設けられる分、製造コストの増加を招く。このようなことを考慮して、室内空気の湿度を検出せずに、室内空気の温度のみを検出する構成にすると、空調の快適性が低くなる可能性がある。 According to the technique described in Patent Document 1, it is possible to perform highly comfortable air conditioning based on the detection value of the temperature and humidity sensor. However, according to the technology described in Patent Literature 1, the manufacturing cost is increased because the sensor elements for detecting the temperature and the humidity are provided. Considering such a situation, if a configuration is adopted in which only the temperature of the indoor air is detected without detecting the humidity of the indoor air, the comfort of the air conditioning may be reduced.
　そこで、本発明は、快適性が高く、製造コストが安い空調システム等を提供することを課題とする。 Therefore, an object of the present invention is to provide an air-conditioning system or the like having high comfort and low manufacturing cost.
　前記課題を解決するために、本発明は、冷媒側熱交換量よりも空気側熱交換量の方が小さい場合、室内熱交換器に向かう空気の温度、前記室内熱交換器で熱交換した空気の温度、前記冷媒側熱交換量、及び前記空気側熱交換量に基づいて、前記室内熱交換器に向かう空気の湿度を制御部が推定し、当該湿度に基づいて空調制御を行うことを特徴とする。 In order to solve the above-mentioned problem, the present invention provides a method for controlling the temperature of air flowing to an indoor heat exchanger when the amount of heat exchanged on the air side is smaller than the amount of heat exchanged on the refrigerant side. The controller estimates the humidity of the air heading to the indoor heat exchanger based on the temperature of the refrigerant, the refrigerant-side heat exchange amount, and the air-side heat exchange amount, and performs air conditioning control based on the humidity. And
　本発明によれば、快適性が高く、製造コストが安い空調システム等を提供できる。 According to the present invention, it is possible to provide an air conditioning system or the like with high comfort and low manufacturing cost.
本発明の実施形態に係る空調システムを含む概略的な構成図である。1 is a schematic configuration diagram including an air conditioning system according to an embodiment of the present invention. 本発明の実施形態に係る空調システムの空気調和機を含む構成図である。1 is a configuration diagram including an air conditioner of an air conditioning system according to an embodiment of the present invention. 本発明の実施形態に係る空調システムの空調管理装置の機能ブロック図である。It is a functional block diagram of an air-conditioning management device of an air-conditioning system concerning an embodiment of the present invention. 本発明の実施形態に係る空調システムにおいて、室内熱交換器における空気の熱交換が顕熱負荷のみであるときの冷媒側熱交換量Ｑref及び空気側熱交換量Ｑairを示す説明図である。FIG. 4 is an explanatory diagram showing a refrigerant-side heat exchange amount Q ref and an air-side heat exchange amount Q air when heat exchange of air in an indoor heat exchanger is only a sensible heat load in the air conditioning system according to the embodiment of the present invention. . 本発明の実施形態に係る空調システムの空調管理装置が備える制御部の処理を示すフローチャートである。It is a flowchart which shows the process of the control part with which the air-conditioning management apparatus of the air-conditioning system concerning embodiment of this invention is provided. 本発明の実施形態に係る空調システムにおいて、室内熱交換器での熱交換に潜熱が含まれる場合の点（Ｑref，Ｑair）の例を示す説明図である。It is an explanatory view showing an example of a point ( Qref , Qair ) when latent heat is included in heat exchange in an indoor heat exchanger in an air-conditioning system concerning an embodiment of the present invention. 本発明の実施形態に係る空調システムにおいて、比率（Ｑair／Ｑref）の時間的推移の例を示す説明図である。It is an explanatory view showing an example of a temporal transition of ratio ( Qair / Qref ) in an air- conditioning system concerning an embodiment of the present invention. 本発明の実施形態に係る空調システムにおいて、室内熱交換器の吸込側・吹出側の空気の温湿度に関する空気線図である。FIG. 4 is an air line diagram relating to temperature and humidity of air on the suction side and the air outlet side of the indoor heat exchanger in the air conditioning system according to the embodiment of the present invention. 本発明の変形例に係る空調システムを含む概略的な構成図である。It is a schematic structure figure containing an air-conditioning system concerning a modification of the present invention.
≪実施形態≫
　図１は、実施形態に係る空調システムＷを含む概略的な構成図である。
　なお、図１では配管Ｊの図示を簡略化し、室外機Ｕｏから４台の室内機Ｕｉに冷媒を導く配管と、４台の室内機Ｕｉから室外機Ｕｏに冷媒を導く配管と、を共通の実線（配管Ｊ）で図示している。 << embodiment >>
FIG. 1 is a schematic configuration diagram including an air conditioning system W according to the embodiment.
In FIG. 1, the illustration of the pipe J is simplified, and the pipe that guides the refrigerant from the outdoor unit Uo to the four indoor units Ui and the pipe that guides the refrigerant from the four indoor units Ui to the outdoor unit Uo are common. This is shown by a solid line (pipe J).
　空調システムＷは、空調を行うためのシステムであり、空気調和機１００と、空調管理装置２００と、を備えている。なお、空調管理装置２００が複数のサーバを含む構成であってもよい。図１に示す携帯端末３００は、空気調和機１００のユーザが所持しているスマートフォン、タブレット、携帯電話等の端末機であり、空調管理装置２００との間でネットワークＮを介して通信可能になっている。 The air conditioning system W is a system for performing air conditioning, and includes an air conditioner 100 and an air conditioning management device 200. The air-conditioning management device 200 may include a plurality of servers. The mobile terminal 300 illustrated in FIG. 1 is a terminal such as a smartphone, a tablet, and a mobile phone owned by a user of the air conditioner 100, and can communicate with the air conditioning management device 200 via the network N. ing.
＜空気調和機の構成＞
　空気調和機１００は、冷房運転や暖房運転等の空調を行う機器である。図１では、一例として、上吹きタイプの室外機Ｕｏと、天井埋込タイプの４台の室内機Ｕｉと、が配管Ｊを介して接続されたマルチ型の空気調和機１００を図示している。図１に示すように、室外機Ｕｏは、通信線Ｍを介して室内機Ｕｉに接続されるとともに、通信線Ｍを介して空調管理装置２００にも接続されている。 <Configuration of air conditioner>
The air conditioner 100 is a device that performs air conditioning such as a cooling operation and a heating operation. FIG. 1 illustrates, as an example, a multi-type air conditioner 100 in which an outdoor unit Uo of a top blowing type and four indoor units Ui of a ceiling embedded type are connected via a pipe J. . As shown in FIG. 1, the outdoor unit Uo is connected to the indoor unit Ui via the communication line M, and is also connected to the air conditioning management device 200 via the communication line M.
　図２は、空気調和機１００の冷媒回路Ｆを含む構成図である。
　なお、図２では、４台の室内機Ｕｉ（図１参照）のうち２台を図示し、残りの２台については図示を省略している。また、図２では、室外熱交換器１２や室内熱交換器１６における空気の流れを白抜き矢印で示している。 FIG. 2 is a configuration diagram including the refrigerant circuit F of the air conditioner 100.
In FIG. 2, two of the four indoor units Ui (see FIG. 1) are illustrated, and illustration of the remaining two units is omitted. In FIG. 2, the flow of air in the outdoor heat exchanger 12 and the indoor heat exchanger 16 is indicated by outline arrows.
　空気調和機１００は、室外機Ｕｏに設けられる機器として、圧縮機１１と、室外熱交換器１２と、室外ファン１３と、室外膨張弁１４と、四方弁１５と、を備えている。
　圧縮機１１は、低温低圧のガス冷媒を圧縮し、高温高圧のガス冷媒として吐出する機器である。このような圧縮機１１として、例えば、スクロール式圧縮機やロータリ式圧縮機が用いられる。 The air conditioner 100 includes a compressor 11, an outdoor heat exchanger 12, an outdoor fan 13, an outdoor expansion valve 14, and a four-way valve 15 as devices provided in the outdoor unit Uo.
The compressor 11 is a device that compresses a low-temperature and low-pressure gas refrigerant and discharges it as a high-temperature and high-pressure gas refrigerant. As such a compressor 11, for example, a scroll compressor or a rotary compressor is used.
　室外熱交換器１２は、その伝熱管（図示せず）を通流する冷媒と、室外ファン１３から送り込まれる外気と、の間で熱交換が行われる熱交換器である。室外熱交換器１２の一端ｇ１は、四方弁１５の切替えによって、圧縮機１１の吸入側又は吐出側に接続され、他端ｇ２は液側配管Ｊ１に接続されている。 The outdoor heat exchanger 12 is a heat exchanger in which heat exchange is performed between the refrigerant flowing through the heat transfer tube (not shown) and the outside air sent from the outdoor fan 13. One end g1 of the outdoor heat exchanger 12 is connected to the suction side or the discharge side of the compressor 11 by switching the four-way valve 15, and the other end g2 is connected to the liquid side pipe J1.
　室外ファン１３は、室外熱交換器１２に外気を送り込むファンである。室外ファン１３は、駆動源である室外ファンモータ１３ａを備え、室外熱交換器１２の付近に配置されている。
　室外膨張弁１４は、室外熱交換器１２に流れる冷媒の流量を調整したり、室外熱交換器１２を蒸発器として機能させる際に冷媒を減圧したりする電子膨張弁であり、液側配管Ｊ１に設けられている。
　四方弁１５は、空調時の運転モードに応じて、冷媒の流路を切り替える弁である。 The outdoor fan 13 is a fan that sends outside air to the outdoor heat exchanger 12. The outdoor fan 13 includes an outdoor fan motor 13a as a driving source, and is arranged near the outdoor heat exchanger 12.
The outdoor expansion valve 14 is an electronic expansion valve that adjusts the flow rate of the refrigerant flowing through the outdoor heat exchanger 12 and reduces the pressure of the refrigerant when the outdoor heat exchanger 12 functions as an evaporator. It is provided in.
The four-way valve 15 is a valve that switches the flow path of the refrigerant according to the operation mode during air conditioning.
　また、空気調和機１００は、室内機Ｕｉに設けられる機器として、室内熱交換器１６と、室内ファン１７と、エアフィルタ１８と、室内膨張弁１９と、を備えている。
　室内熱交換器１６は、その伝熱管（図示せず）を通流する冷媒と、室内ファン１７から送り込まれる室内空気（空調対象空間の空気）と、の間で熱交換が行われる熱交換器である。室内熱交換器１６の一端ｈ１はガス側配管Ｊ２に接続され、他端ｈ２は液側配管Ｊ３に接続されている。 In addition, the air conditioner 100 includes an indoor heat exchanger 16, an indoor fan 17, an air filter 18, and an indoor expansion valve 19 as devices provided in the indoor unit Ui.
The indoor heat exchanger 16 is a heat exchanger in which heat is exchanged between a refrigerant flowing through a heat transfer tube (not shown) and indoor air (air in a space to be air-conditioned) sent from an indoor fan 17. It is. One end h1 of the indoor heat exchanger 16 is connected to the gas side pipe J2, and the other end h2 is connected to the liquid side pipe J3.
　室内ファン１７は、室内熱交換器１６に室内空気を送り込むファンである。室内ファン１７は、駆動源である室内ファンモータ１７ａを有し、室内熱交換器１６の付近に配置されている。
　エアフィルタ１８は、室内ファン１７の駆動に伴って室内熱交換器１６に向かう空気から塵埃を捕集するフィルタであり、室内熱交換器１６の付近（空気吸込側）に配置されている。 The indoor fan 17 is a fan that sends indoor air to the indoor heat exchanger 16. The indoor fan 17 has an indoor fan motor 17a as a driving source, and is arranged near the indoor heat exchanger 16.
The air filter 18 is a filter that collects dust from air flowing toward the indoor heat exchanger 16 as the indoor fan 17 is driven, and is arranged near the indoor heat exchanger 16 (air suction side).
　室内膨張弁１９は、室内熱交換器１６に流れる冷媒の流量を調整したり、室内熱交換器１６を蒸発器として機能させる際に冷媒を減圧したりする電子膨張弁であり、液側配管Ｊ３に設けられている。なお、他の室内機Ｕｉも同様の構成を備えている。 The indoor expansion valve 19 is an electronic expansion valve that adjusts the flow rate of the refrigerant flowing through the indoor heat exchanger 16 and reduces the pressure of the refrigerant when the indoor heat exchanger 16 functions as an evaporator. It is provided in. The other indoor units Ui have the same configuration.
　液側接続部Ｋ１は、それぞれの室内機Ｕｉに一対一で接続された複数の液側配管Ｊ３と、室外熱交換器１２の他端ｇ２に接続された液側配管Ｊ１と、を接続するものである。
　ガス側接続部Ｋ２は、それぞれの室内機Ｕｉに一対一で接続された複数のガス側配管Ｊ２と、室外機Ｕｏの四方弁１５に接続されたガス側配管Ｊ４と、を接続するものである。 The liquid-side connection part K1 connects the plurality of liquid-side pipes J3 connected one-to-one to each indoor unit Ui, and the liquid-side pipes J1 connected to the other end g2 of the outdoor heat exchanger 12. It is.
The gas side connection part K2 connects a plurality of gas side pipes J2 connected one-to-one to each indoor unit Ui, and a gas side pipe J4 connected to the four-way valve 15 of the outdoor unit Uo. .
　そして、空調時の運転モードに応じて、冷媒回路Ｆにおいて周知のヒートポンプサイクルで冷媒が循環するようになっている。例えば、冷房運転時には、圧縮機１１、室外熱交換器１２（凝縮器）、室外膨張弁１４（膨張弁）、室内膨張弁１９（膨張弁）、及び室内熱交換器１６（蒸発器）を順次に介して冷媒が循環する。
　一方、暖房運転時には、圧縮機１１、室内熱交換器１６（凝縮器）、室内膨張弁１９（膨張弁）、室外膨張弁１４（膨張弁）、及び室外熱交換器１２（蒸発器）を順次に介して冷媒が循環する。 The refrigerant circulates in the refrigerant circuit F in a well-known heat pump cycle in accordance with the operation mode during air conditioning. For example, during the cooling operation, the compressor 11, the outdoor heat exchanger 12 (condenser), the outdoor expansion valve 14 (expansion valve), the indoor expansion valve 19 (expansion valve), and the indoor heat exchanger 16 (evaporator) are sequentially operated. The refrigerant circulates through.
On the other hand, during the heating operation, the compressor 11, the indoor heat exchanger 16 (condenser), the indoor expansion valve 19 (expansion valve), the outdoor expansion valve 14 (expansion valve), and the outdoor heat exchanger 12 (evaporator) are sequentially operated. The refrigerant circulates through.
　すなわち、空調システムＷは、圧縮機１１、「凝縮器」、「膨張弁」、及び「蒸発器」を順次に介して冷媒が循環する冷媒回路Ｆを備え、前記した「凝縮器」及び「蒸発器」の一方は室外熱交換器１２であり、他方は室内熱交換器１６である。 That is, the air conditioning system W includes the refrigerant circuit F in which the refrigerant circulates sequentially through the compressor 11, the “condenser”, the “expansion valve”, and the “evaporator”. One of the units is an outdoor heat exchanger 12 and the other is an indoor heat exchanger 16.
　その他、室外機Ｕｏには、吸入圧力センサ２１と、吸入温度センサ２２と、吐出圧力センサ２３と、吐出温度センサ２４と、が設けられている。
　吸入圧力センサ２１は、圧縮機１１の吸入側における冷媒の圧力（吸入圧力）を検出するセンサである。吸入温度センサ２２は、圧縮機１１の吸入側における冷媒の温度（吸入温度）を検出するセンサである。 In addition, the outdoor unit Uo is provided with a suction pressure sensor 21, a suction temperature sensor 22, a discharge pressure sensor 23, and a discharge temperature sensor 24.
The suction pressure sensor 21 is a sensor that detects the pressure (suction pressure) of the refrigerant on the suction side of the compressor 11. The suction temperature sensor 22 is a sensor that detects the temperature of the refrigerant (suction temperature) on the suction side of the compressor 11.
　吐出圧力センサ２３は、圧縮機１１の吐出側における冷媒の圧力（吐出圧力）を検出するセンサである。吐出温度センサ２４は、圧縮機１１の吐出側における冷媒の温度（吐出温度）を検出するセンサである。
　吸入圧力センサ２１、吸入温度センサ２２、吐出圧力センサ２３、及び吐出温度センサ２４の各検出値は、室外制御回路３１を介して空調管理装置２００に出力される。 The discharge pressure sensor 23 is a sensor that detects the pressure (discharge pressure) of the refrigerant on the discharge side of the compressor 11. The discharge temperature sensor 24 is a sensor that detects the temperature (discharge temperature) of the refrigerant on the discharge side of the compressor 11.
The detection values of the suction pressure sensor 21, the suction temperature sensor 22, the discharge pressure sensor 23, and the discharge temperature sensor 24 are output to the air conditioning management device 200 via the outdoor control circuit 31.
　一方、室内機Ｕｉには、冷媒温度センサ２５，２６と、吸込空気温度センサ２７と、吹出空気温度センサ２８と、が設けられている。
　冷媒温度センサ２５は、室内熱交換器１６の一端ｈ１の付近を通流する冷媒の温度を検出するセンサである。他方の冷媒温度センサ２６は、室内熱交換器１６の他端ｈ２の付近を通流する冷媒の温度を検出するセンサである。 On the other hand, the indoor unit Ui is provided with refrigerant temperature sensors 25 and 26, an intake air temperature sensor 27, and an outlet air temperature sensor 28.
The refrigerant temperature sensor 25 is a sensor that detects the temperature of the refrigerant flowing near one end h1 of the indoor heat exchanger 16. The other refrigerant temperature sensor 26 is a sensor that detects the temperature of the refrigerant flowing near the other end h2 of the indoor heat exchanger 16.
　吸込空気温度センサ２７は、室内熱交換器１６の空気吸込側（入口側）における空気の温度を検出するセンサである。吹出空気温度センサ２８は、室内熱交換器１６の空気吹出側（出口側）における空気の温度を検出するセンサである。
　冷媒温度センサ２５，２６、吸込空気温度センサ２７、及び吹出空気温度センサ２８の各検出値は、室内制御回路３２を介して室外制御回路３１や空調管理装置２００に出力される。 The suction air temperature sensor 27 is a sensor that detects the temperature of air on the air suction side (inlet side) of the indoor heat exchanger 16. The blowout air temperature sensor 28 is a sensor that detects the temperature of air on the air blowout side (outlet side) of the indoor heat exchanger 16.
Respective detection values of the refrigerant temperature sensors 25 and 26, the suction air temperature sensor 27, and the blow-off air temperature sensor 28 are output to the outdoor control circuit 31 and the air conditioning management device 200 via the indoor control circuit 32.
　また、室外機Ｕｏには室外制御回路３１が設けられ、室内機Ｕｉには室内制御回路３２が設けられている。室外制御回路３１や室内制御回路３２は、図示はしないが、ＣＰＵ（Central Processing Unit）、ＲＯＭ（Read Only Memory）、ＲＡＭ（Random Access Memory）、各種インタフェース等の電子回路を含んで構成されている。そして、ＲＯＭに記憶されたプログラムを読み出してＲＡＭに展開し、ＣＰＵが各種処理を実行するようになっている。 The outdoor unit Uo is provided with an outdoor control circuit 31, and the indoor unit Ui is provided with an indoor control circuit 32. Although not shown, the outdoor control circuit 31 and the indoor control circuit 32 include electronic circuits such as a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and various interfaces. . Then, the program stored in the ROM is read out and expanded in the RAM, and the CPU executes various processes.
　室外制御回路３１は、各センサの検出値や空調管理装置２００からの指令に基づき、圧縮機１１、室外ファン１３、室外膨張弁１４等を制御し、また、所定の信号を室内制御回路３２に送信する。一方、室内制御回路３２は、室外制御回路３１から受信する信号や空調管理装置２００からの指令に基づき、室内ファン１７や室内膨張弁１９を制御する。 The outdoor control circuit 31 controls the compressor 11, the outdoor fan 13, the outdoor expansion valve 14, and the like based on the detection value of each sensor and a command from the air conditioning management device 200, and outputs a predetermined signal to the indoor control circuit 32. Send. On the other hand, the indoor control circuit 32 controls the indoor fan 17 and the indoor expansion valve 19 based on a signal received from the outdoor control circuit 31 and a command from the air conditioning management device 200.
　リモコンＲｅは、赤外線通信等によって、室内制御回路３２との間で所定の情報をやり取りする。例えば、空調の運転／停止、運転モードの設定、タイマ、設定温度の変更等に関する信号が、リモコンＲｅから室内制御回路３２に送信される。一方、室内制御回路３２からリモコンＲｅに送信される信号として、例えば、室内空気の温度や湿度に関する情報が挙げられる。 (4) The remote controller Re exchanges predetermined information with the indoor control circuit 32 by infrared communication or the like. For example, signals related to the operation / stop of the air conditioning, the setting of the operation mode, the timer, and the change of the set temperature are transmitted from the remote controller Re to the indoor control circuit 32. On the other hand, the signal transmitted from the indoor control circuit 32 to the remote controller Re includes, for example, information on the temperature and humidity of indoor air.
＜空調管理装置の構成＞
　図２に示す空調管理装置２００は、空気調和機１００による空調を管理したり、後記するように、各センサの検出値に基づいて、室内空気の湿度を推定したりする機能を有している。空調管理装置２００は、図示はしないが、ＣＰＵ、ＲＯＭ、ＲＡＭ、各種インタフェース等の電子回路を含んで構成され、通信線を介して室外制御回路３１や室内制御回路３２に接続されている。 <Configuration of air conditioning management device>
The air conditioning management device 200 illustrated in FIG. 2 has a function of managing air conditioning by the air conditioner 100 and, as described later, estimating the humidity of indoor air based on a detection value of each sensor. . Although not shown, the air-conditioning management device 200 is configured to include electronic circuits such as a CPU, a ROM, a RAM, and various interfaces, and is connected to the outdoor control circuit 31 and the indoor control circuit 32 via a communication line.
　図３は、空調管理装置２００の機能ブロック図である（適宜、図２を参照）。
　図３に示すように、空調管理装置２００は、記憶部２１０と、制御部２２０と、報知部２３０と、を備えている。
　記憶部２１０には、所定のプログラムの他、回転速度－設計風量情報２１１と、設計体積効率情報２１２と、顕熱負荷情報２１３と、が格納されている。回転速度－設計風量情報２１１とは、室内ファン１７の回転速度に対応する所定の設計風量を示す情報である。前記した「設計風量」とは、室内ファン１７や室内熱交換器１６の仕様に基づき、事前の実験等で得られる室内機Ｕｉの風量である。 FIG. 3 is a functional block diagram of the air conditioning management device 200 (see FIG. 2 as appropriate).
As shown in FIG. 3, the air conditioning management device 200 includes a storage unit 210, a control unit 220, and a notification unit 230.
The storage unit 210 stores rotation speed-design airflow information 211, design volumetric efficiency information 212, and sensible heat load information 213 in addition to a predetermined program. The rotation speed-design airflow information 211 is information indicating a predetermined design airflow corresponding to the rotation speed of the indoor fan 17. The “design airflow” described above is an airflow of the indoor unit Ui obtained by a preliminary experiment or the like based on the specifications of the indoor fan 17 and the indoor heat exchanger 16.
　なお、室内ファン１７の回転速度が大きいほど、設計風量も大きくなる。そして、室内ファン１７の回転速度に対応する設計風量を算出するための数式等が、回転速度－設計風量情報２１１として、予め記憶部２１０に格納されている。 (4) The higher the rotation speed of the indoor fan 17, the larger the design air volume. Then, a mathematical expression or the like for calculating the design airflow corresponding to the rotation speed of the indoor fan 17 is stored in the storage unit 210 in advance as the rotation speed-design airflow information 211.
　図３に示す設計体積効率情報２１２とは、圧縮機１１（図２参照）の設計体積効率を示す情報である。前記した「設計体積効率」とは、圧縮機１１の仕様に基づく体積効率であり、圧縮機１１のモータ（図示せず）の回転速度等に基づいて算出される。
　なお、記憶部２１０に格納されている顕熱負荷情報２１３については後記する。 The design volumetric efficiency information 212 shown in FIG. 3 is information indicating the design volumetric efficiency of the compressor 11 (see FIG. 2). The “design volumetric efficiency” is a volumetric efficiency based on the specifications of the compressor 11, and is calculated based on a rotation speed of a motor (not shown) of the compressor 11 and the like.
The sensible heat load information 213 stored in the storage unit 210 will be described later.
　制御部２２０は、各センサの検出値や記憶部２１０のデータ等に基づき、所定の処理を実行する。図３に示すように、制御部２２０は、冷媒側熱交換量推定部２２１と、空気側熱交換量推定部２２２と、学習部２２３と、比較部２２４と、判定部２２５と、湿度推定部２２６と、空調制御部２２７と、を備えている。 The control unit 220 performs a predetermined process based on a detection value of each sensor, data of the storage unit 210, and the like. As illustrated in FIG. 3, the control unit 220 includes a refrigerant-side heat exchange amount estimating unit 221, an air-side heat exchange amount estimating unit 222, a learning unit 223, a comparing unit 224, a determining unit 225, and a humidity estimating unit. 226 and an air-conditioning control unit 227.
　冷媒側熱交換量推定部２２１は、冷媒の温度や圧力等の検出値に基づいて、室内熱交換器１６における冷媒側熱交換量Ｑrefを推定する。この冷媒側熱交換量Ｑrefの「冷媒側」とは、冷媒の温度や圧力等の検出値に基づいて推定された熱交換量であることを意味している。 Refrigerant heat exchange amount estimating unit 221, based on the detected value of temperature, pressure, etc. of the refrigerant, estimates the refrigerant side heat exchange quantity Q ref in the indoor heat exchanger 16. The “refrigerant side” of the refrigerant side heat exchange amount Qref means a heat exchange amount estimated based on a detected value such as a temperature and a pressure of the refrigerant.
　空気側熱交換量推定部２２２は、室内熱交換器１６の吸込側・吹出側の空気の温度や、室内ファン１７の回転速度の他、前記した回転速度－設計風量情報２１１に基づいて、室内熱交換器１６における空気側熱交換量Ｑairとして推定する。この空気側熱交換量Ｑairの「空気側」とは、空気の温度等に基づいて推定された熱交換量であることを意味している。 The air-side heat exchange amount estimating unit 222 determines the indoor temperature based on the rotation speed-design airflow information 211 in addition to the temperature of the air on the suction side and the air outlet side of the indoor heat exchanger 16 and the rotation speed of the indoor fan 17. It is estimated as the air-side heat exchange amount Q air in the heat exchanger 16. The “air side” of the air side heat exchange amount Q air means a heat exchange amount estimated based on the air temperature or the like.
　ところで、室内空気の湿度が高いときに冷房運転が行われると、室内熱交換器１６の伝熱管（図示せず）の温度が露点を下回ることがある。その結果、空気中の水蒸気を水に状態変化させる潜熱負荷が生じる。この潜熱負荷は空気の温度変化に反映されないため、吸込側・吹出側の空気の温度差に基づく空気側熱交換量Ｑair（顕熱）が、冷媒側熱交換量Ｑref（全熱）よりも小さくなる。本実施形態では、このような冷媒側熱交換量Ｑrefと空気側熱交換量Ｑairとの大小関係に基づいて、潜熱の有無を判定するようにしている。 By the way, if the cooling operation is performed when the humidity of the indoor air is high, the temperature of the heat transfer tubes (not shown) of the indoor heat exchanger 16 may fall below the dew point. As a result, a latent heat load is generated that changes the state of water vapor in the air into water. Since this latent heat load is not reflected in the temperature change of the air, the air-side heat exchange amount Q air (sensible heat) based on the temperature difference between the suction side and the blow-out side air is larger than the refrigerant side heat exchange amount Q ref (total heat). Is also smaller. In the present embodiment, the presence or absence of latent heat is determined based on the magnitude relationship between the refrigerant-side heat exchange amount Qref and the air-side heat exchange amount Qair .
　図３に示す学習部２２３は、室内熱交換器１６における空気の熱交換に潜熱が含まれていない（顕熱のみである）ことが既知であるときに、冷媒側熱交換量Ｑrefに対する空気側熱交換量Ｑairの比率（Ｑair／Ｑref）を学習する。 Learning unit 223 shown in FIG. 3, does not contain latent heat exchange of the air in the indoor heat exchanger 16 when (sensible heat in which only) It is known, air to refrigerant heat exchange quantity Q ref The ratio (Q air / Q ref ) of the side heat exchange amount Q air is learned.
　図４は、室内熱交換器における空気の熱交換が顕熱負荷のみであるときの冷媒側熱交換量Ｑref及び空気側熱交換量Ｑairを示す説明図である。
　なお、図４の横軸は、冷媒側熱交換量推定部２２１（図３参照）によって推定された冷媒側熱交換量Ｑrefである。図４の縦軸は、空気側熱交換量推定部２２２（図３参照）によって推定された空気側熱交換量Ｑairである。 Figure 4 is an explanatory diagram showing a refrigerant-side heat exchange quantity Q ref and the air-side heat exchange rate Q air when the heat exchange of the air in the indoor heat exchanger is only the sensible heat load.
The horizontal axis of FIG. 4 is a refrigerant-side heat exchange quantity Q ref estimated by the refrigerant side heat exchange amount estimating unit 221 (see FIG. 3). The vertical axis in FIG. 4 is the air-side heat exchange amount Q air estimated by the air-side heat exchange amount estimation unit 222 (see FIG. 3).
　図４に示す複数の点は、室内熱交換器１６における空気の熱交換が顕熱負荷のみであって、潜熱負荷がほとんどないことが既知の学習期間に得られたデータである。このような学習期間での運転モードとして、例えば、暖房運転の他、設定温度が所定値以上の冷房運転が挙げられる。 複数 A plurality of points shown in FIG. 4 are data obtained during a learning period in which it is known that the heat exchange of air in the indoor heat exchanger 16 is only a sensible heat load and there is almost no latent heat load. As an operation mode in such a learning period, for example, in addition to the heating operation, a cooling operation in which the set temperature is equal to or higher than a predetermined value is given.
　学習部２２３（図３参照）は、所定の学習期間に得られた複数の冷媒側熱交換量Ｑrefや空気側熱交換量Ｑairを用いて、例えば、最小二乗法に基づき、図４に示す直線Ｌ１の数式を導く。なお、直線Ｌ１の数式に代えて、時系列的に得られる比率（Ｑair／Ｑref）の移動平均を学習部２２３が算出するようにしてもよい。 The learning unit 223 (see FIG. 3) uses a plurality of refrigerant-side heat exchange amounts Qref and air-side heat exchange amounts Q air obtained during a predetermined learning period, for example, based on the least squares method, as shown in FIG. The mathematical formula of the straight line L1 shown is derived. Note that the learning unit 223 may calculate the moving average of the ratio (Q air / Q ref ) obtained in time series instead of the mathematical expression of the straight line L1.
　学習期間においては、前記したように、室内熱交換器１６における空気の熱交換において潜熱がほとんど含まれないため、その全熱が顕熱に略等しくなる。その結果、冷媒側熱交換量Ｑref（全熱）と空気側熱交換量Ｑair（顕熱）とが略等しくなり、直線Ｌ１の傾きが“１”に近い値になる。 During the learning period, since the latent heat is hardly included in the heat exchange of the air in the indoor heat exchanger 16 as described above, the total heat is substantially equal to the sensible heat. As a result, the refrigerant side heat exchange amount Q ref (total heat) and the air side heat exchange amount Q air (sensible heat) become substantially equal, and the slope of the straight line L1 becomes a value close to “1”.
　この直線Ｌ１の傾きをａとすると、学習部２２３は、例えば、傾きが（ａ＋ｂ１）の直線Ｌ１１よりも下側であり、かつ、傾きが（ａ－ｂ１）の直線Ｌ１２よりも上側の所定範囲を学習する。別の観点から説明すると、学習部２２３は、室内熱交換器１６での熱交換がほとんど顕熱のみであるときの比率（Ｑair／Ｑref）に関して、（ａ－ｂ１）≦（Ｑair／Ｑref）≦（ａ＋ｂ１）の範囲を示す顕熱負荷情報２１３（図３参照）を記憶部２１０に格納する。 Assuming that the slope of the straight line L1 is a, the learning unit 223 determines, for example, that the predetermined range is lower than the straight line L11 having the slope (a + b1) and higher than the straight line L12 having the slope (a−b1). To learn. To explain from another viewpoint, the learning unit 223 determines that the ratio (Q air / Q ref ) when the heat exchange in the indoor heat exchanger 16 is almost only sensible heat is (a−b 1) ≦ (Q air / Sensible heat load information 213 (see FIG. 3) indicating the range of (Q ref ) ≦ (a + b1) is stored in the storage unit 210.
　図３に示す比較部２２４は、空調運転中に、冷媒側熱交換量Ｑrefと空気側熱交換量Ｑairとの大小を比較する。
　判定部２２５は、比較部２２４の比較結果に基づき、室内熱交換器１６での空気の熱交換に関して、潜熱の有無を判定する。 The comparison unit 224 illustrated in FIG. 3 compares the magnitude of the refrigerant-side heat exchange amount Qref with the magnitude of the air-side heat exchange amount Qair during the air-conditioning operation.
The determination unit 225 determines the presence or absence of latent heat with respect to the heat exchange of the air in the indoor heat exchanger 16 based on the comparison result of the comparison unit 224.
　湿度推定部２２６は、室内熱交換器１６での空気の熱交換に潜熱が含まれる場合、室内熱交換器１６に向かう空気の湿度を推定する。
　空調制御部２２７は、湿度推定部２２６の推定結果等に基づいて、所定の空調制御を実行する。 When the latent heat is included in the heat exchange of the air in the indoor heat exchanger 16, the humidity estimating unit 226 estimates the humidity of the air going to the indoor heat exchanger 16.
The air-conditioning control unit 227 performs a predetermined air-conditioning control based on the estimation result of the humidity estimating unit 226 and the like.
　報知部２３０は、湿度推定部２２６の推定結果等を報知する。このような報知部２３０として、例えば、ディスプレイが挙げられる。その他、報知部２３０が所定の通信機能を有し、湿度推定部２２６の推定結果等をリモコンＲｅ（図２参照）やユーザの携帯端末３００（図１参照）に報知するようにしてもよい。 The notifying unit 230 notifies the estimation result of the humidity estimating unit 226 and the like. A display is an example of such a notification unit 230. In addition, the notification unit 230 may have a predetermined communication function, and may notify the remote controller Re (see FIG. 2) and the user's portable terminal 300 (see FIG. 1) of the estimation result and the like of the humidity estimation unit 226.
＜空調管理装置の処理＞
　図５は、空調管理装置２００が備える制御部２２０の処理を示すフローチャートである（適宜、図２、図３を参照）。
　なお、図５の「ＳＴＡＲＴ」時には、前記した顕熱負荷情報２１３が既に学習されているものとする。また、図５の処理中、リモコンＲｅからの指令に基づき、空気調和機１００が冷房運転を実行しているものとする。 <Processing of air conditioning management device>
FIG. 5 is a flowchart showing the processing of the control unit 220 provided in the air-conditioning management device 200 (see FIGS. 2 and 3 as appropriate).
At the time of "START" in FIG. 5, it is assumed that the sensible heat load information 213 has already been learned. Also, it is assumed that the air conditioner 100 is performing the cooling operation based on a command from the remote controller Re during the processing in FIG.
　また、室内空気の湿度を推定する際（つまり、Ｓ１０１～１０６の処理を行う際）、制御部２２０が、室内熱交換器１６での空気の熱交換に潜熱が含まれる（室内熱交換器１６の温度が露点を下回る）ように、室内熱交換器１６を蒸発器として機能させる処理を行うことが好ましい。例えば、制御部２２０が、リモコンＲｅからの指令に基づく所定温度よりも低い設定温度で冷房運転を開始させてもよい。これによって、後記するように、湿度センサ（図示せず）がなくても、室内空気の湿度を推定できるからである（Ｓ１０６）。 Further, when estimating the humidity of the indoor air (that is, when performing the processing of S101 to S106), the control unit 220 causes the heat exchange of the air in the indoor heat exchanger 16 to include the latent heat (the indoor heat exchanger 16). It is preferable to perform a process of making the indoor heat exchanger 16 function as an evaporator so that the temperature of the indoor heat exchanger 16 falls below the dew point. For example, the control unit 220 may start the cooling operation at a set temperature lower than a predetermined temperature based on a command from the remote controller Re. This is because, as described later, the humidity of the room air can be estimated without a humidity sensor (not shown) (S106).
　ステップＳ１０１において制御部２２０は、冷媒側熱交換量推定部２２１によって、室内熱交換器１６の冷媒側熱交換量Ｑrefを推定する（冷媒側熱交換量推定ステップ）。具体的に説明すると、制御部２２０は、まず、吸入圧力センサ２１の検出値と、吸入温度センサ２２の検出値と、圧縮機１１の吸入側の冷媒過熱度と、に基づいて、圧縮機１１の吸入側の冷媒密度を算出する。なお、圧縮機１１の吸入側の冷媒過熱度は、事前の実験に基づき、所定の値が予め記憶されているものとする。 Control unit 220 in step S101, the refrigerant-side heat exchange amount estimating unit 221 estimates the refrigerant side heat exchange amount Q ref of the indoor heat exchanger 16 (the refrigerant heat exchanger estimation step). More specifically, the control unit 220 firstly controls the compressor 11 based on the detection value of the suction pressure sensor 21, the detection value of the suction temperature sensor 22, and the degree of superheat of the refrigerant on the suction side of the compressor 11. Calculate the refrigerant density on the suction side. It is assumed that a predetermined value of the refrigerant superheat degree on the suction side of the compressor 11 is stored in advance based on a previous experiment.
　そして、制御部２２０は、圧縮機１１の吸入側の冷媒密度と、圧縮機１１の行程容積と、圧縮機モータ（図示せず）の回転速度と、圧縮機１１の設計体積効率と、に基づいて、冷媒回路Ｆにおける単位時間当たりの冷媒循環量を算出する。なお、圧縮機１１の行程容積は、既知であるものとする。また、圧縮機１１の設計体積効率は、前記した設計体積効率情報２１２（図３参照）に基づいて推定される。 Then, the control unit 220 determines the refrigerant density on the suction side of the compressor 11, the stroke volume of the compressor 11, the rotation speed of the compressor motor (not shown), and the designed volumetric efficiency of the compressor 11. Thus, the refrigerant circulation amount per unit time in the refrigerant circuit F is calculated. It is assumed that the stroke volume of the compressor 11 is known. Further, the design volumetric efficiency of the compressor 11 is estimated based on the above-described design volumetric efficiency information 212 (see FIG. 3).
　さらに、制御部２２０は、吐出圧力センサ２３の検出値と、冷媒温度センサ２５，２６の検出値と、に基づいて、室内熱交換器１６の一端側・他端側（つまり、入口側・出口側）における冷媒の比エンタルピ差を算出する。 Further, the control unit 220 determines one end and the other end of the indoor heat exchanger 16 (that is, the inlet side and the outlet side) based on the detection value of the discharge pressure sensor 23 and the detection values of the refrigerant temperature sensors 25 and 26. Side), the difference in specific enthalpy of the refrigerant is calculated.
　そして、制御部２２０は、室内熱交換器１６の一端側・他端側における冷媒の比エンタルピ差と、前記した冷媒循環量と、に基づいて、室内熱交換器１６の冷媒側熱交換量Ｑrefを推定する。このように、制御部２２０は、室内熱交換器１６の一端側・他端側の冷媒の温度を含む情報に基づき、室内熱交換器１６における冷媒側熱交換量Ｑrefを推定する。 Then, the control unit 220 determines the refrigerant-side heat exchange amount Q of the indoor heat exchanger 16 based on the specific enthalpy difference of the refrigerant at one end and the other end of the indoor heat exchanger 16 and the above-described refrigerant circulation amount. Estimate ref . As described above, the control unit 220 estimates the refrigerant-side heat exchange amount Qref in the indoor heat exchanger 16 based on the information including the temperatures of the refrigerant at one end and the other end of the indoor heat exchanger 16.
　次に、ステップＳ１０２において制御部２２０は、空気側熱交換量推定部２２２によって、室内熱交換器１６の空気側熱交換量Ｑairを推定する（空気側熱交換量推定ステップ）。具体的に説明すると、制御部２２０は、まず、回転速度－設計風量情報２１１を参照し、室内ファン１７の回転速度に対応する設計風量を算出する。そして、制御部２２０は、前記した設計風量と、吸込空気温度センサ２７の検出値と、吹出空気温度センサ２８の検出値と、に基づいて、室内熱交換器１６の空気側熱交換量Ｑairを推定する。 Next, in step S102, the control unit 220 estimates the air-side heat exchange amount Q air of the indoor heat exchanger 16 by the air-side heat exchange amount estimation unit 222 (air-side heat exchange amount estimation step). More specifically, the control unit 220 first calculates the design airflow corresponding to the rotation speed of the indoor fan 17 with reference to the rotation speed-design airflow information 211. Then, the control unit 220 determines the air-side heat exchange amount Q air of the indoor heat exchanger 16 based on the design air volume, the detection value of the intake air temperature sensor 27, and the detection value of the blow-out air temperature sensor 28. Is estimated.
　このように、制御部２２０は、室内熱交換器１６に向かう空気の温度、室内熱交換器１６で熱交換した空気の温度、及び、室内ファン１７の回転速度に対応する設計風量に基づいて、室内熱交換器１６における空気側熱交換量Ｑairを推定する。 As described above, the control unit 220 determines the temperature of the air flowing toward the indoor heat exchanger 16, the temperature of the air that has exchanged heat in the indoor heat exchanger 16, and the design airflow corresponding to the rotation speed of the indoor fan 17. The air-side heat exchange amount Q air in the indoor heat exchanger 16 is estimated.
　次に、ステップＳ１０３において制御部２２０は、比較部２２４によって、冷媒側熱交換量Ｑrefよりも空気側熱交換量Ｑairのほうが小さいか否かを判定する。 Next, in step S103, the control unit 220 causes the comparing unit 224 to determine whether the air-side heat exchange amount Q air is smaller than the refrigerant-side heat exchange amount Q ref .
　図６は、室内熱交換器での熱交換に潜熱が含まれる場合の点（Ｑref，Ｑair）の例を示す説明図である。
　なお、図６の横軸は冷媒側熱交換量Ｑrefであり、縦軸は空気側熱交換量Ｑairである。また、図６に示す斜線部分は、室内熱交換器１６での空気の熱交換が顕熱負荷のみであると想定される範囲である。 FIG. 6 is an explanatory diagram showing an example of points (Q ref , Q air ) in the case where latent heat is included in heat exchange in the indoor heat exchanger.
The horizontal axis in FIG. 6 is the refrigerant-side heat exchange amount Qref , and the vertical axis is the air-side heat exchange amount Qair . The hatched area shown in FIG. 6 is a range in which the heat exchange of the air in the indoor heat exchanger 16 is assumed to be only the sensible heat load.
　例えば、点Ｐ１に着目すると、冷媒側熱交換量Ｑ１refよりも空気側熱交換量Ｑ１airのほうが小さく、さらに、点（Ｑ１ref，Ｑ１air）が斜線部分の所定範囲から逸脱している。これは、室内熱交換器１６における空気の熱交換に潜熱が含まれていたからである。つまり、室内機Ｕｉ（図２参照）に吸い込まれた空気に含まれる水蒸気が室内熱交換器１６（図２参照）に結露する際、潜熱が生じたからである。なお、図６に示す他の点についても同様である。 For example, focusing on the point P1, the air-side heat exchange amount Q1 air is smaller than the refrigerant-side heat exchange amount Q1 ref , and the point (Q1 ref , Q1 air ) deviates from a predetermined range of a hatched portion. This is because latent heat was included in the heat exchange of air in the indoor heat exchanger 16. That is, when the water vapor contained in the air sucked into the indoor unit Ui (see FIG. 2) condenses on the indoor heat exchanger 16 (see FIG. 2), latent heat is generated. The same applies to other points shown in FIG.
　図５のステップＳ１０３において冷媒側熱交換量Ｑrefよりも空気側熱交換量Ｑairのほうが小さい場合（Ｓ１０３：Ｙｅｓ）、制御部２２０の処理はステップＳ１０４に進む。
　ステップＳ１０４において制御部２２０は、比率（Ｑair／Ｑref）が所定範囲外であるか否かを判定する。 If the air-side heat exchange amount Q air is smaller than the refrigerant-side heat exchange amount Q ref in step S103 of FIG. 5 (S103: Yes), the process of the control unit 220 proceeds to step S104.
In step S104, the control unit 220 determines whether or not the ratio (Q air / Q ref ) is outside a predetermined range.
　図７は、比率（Ｑair／Ｑref）の時間的推移の例を示す説明図である。
　なお、図７の横軸は時刻であり、縦軸は比率（Ｑair／Ｑref）である。図７の例では、室内熱交換器１６での空気の熱交換が顕熱負荷のみであるときの比率（Ｑair／Ｑref）の範囲として、α≦（Ｑair／Ｑref）≦βが設定されている。これが、前記した顕熱負荷情報２１３（図３参照）である。また、図７の例では、時刻ｔ１，ｔ２，ｔ３のそれぞれにおいて、比率（Ｑair／Ｑref）が、所定値αよりも小さくなっている。 FIG. 7 is an explanatory diagram showing an example of a temporal transition of the ratio (Q air / Q ref ).
In FIG. 7, the horizontal axis represents time, and the vertical axis represents the ratio (Q air / Q ref ). In the example of FIG. 7, α ≦ (Q air / Q ref ) ≦ β is the range of the ratio (Q air / Q ref ) when the heat exchange of the air in the indoor heat exchanger 16 is only the sensible heat load. Is set. This is the sensible heat load information 213 (see FIG. 3). In the example of FIG. 7, the ratio (Q air / Q ref ) is smaller than the predetermined value α at each of the times t1, t2, and t3.
　なお、時系列的に算出された複数の比率（Ｑair／Ｑref）の移動平均を制御部２２０が算出し、この移動平均が所定範囲α≦（Ｑair／Ｑref）≦βから外れたか否かを判定するようにしてもよい（Ｓ１０４）。
　その他、比率（Ｑair／Ｑref）を制御部２２０が算出する際、図６に示す複数の点（Ｑref，Ｑair）の近似直線Ｌ２を最小二乗法で算出し、この近似直線Ｌ２の傾きが所定範囲α≦（Ｑair／Ｑref）≦βから外れているか否かを判定するようにしてもよい（Ｓ１０４）。 The control unit 220 calculates a moving average of a plurality of ratios (Q air / Q ref ) calculated in time series, and determines whether the moving average deviates from a predetermined range α ≦ (Q air / Q ref ) ≦ β. The determination may be made (S104).
In addition, when the control unit 220 calculates the ratio (Q air / Q ref ), the approximate straight line L2 of the plurality of points (Q ref , Q air ) shown in FIG. 6 is calculated by the least square method, and the approximate straight line L2 is calculated. It may be determined whether the inclination is out of the predetermined range α ≦ (Q air / Q ref ) ≦ β (S104).
　図５のステップＳ１０４において比率（Ｑair／Ｑref）が所定範囲外である場合（Ｓ１０４：Ｙｅｓ）、制御部２２０の処理はステップＳ１０５に進む。
　ステップＳ１０５において制御部２２０は、判定部２２５によって、室内熱交換器１６における空気の熱交換に潜熱が含まれている（「潜熱あり」）と判定する。 When the ratio (Q air / Q ref ) is out of the predetermined range in step S104 of FIG. 5 (S104: Yes), the process of the control unit 220 proceeds to step S105.
In step S105, the control unit 220 causes the determination unit 225 to determine that the heat exchange of the air in the indoor heat exchanger 16 includes latent heat ("latent heat is present").
　次に、ステップＳ１０６において制御部２２０は、湿度推定部２２６によって、室内熱交換器１６に向かう空気の湿度を推定する（湿度推定ステップ）。 Next, in step S106, the control unit 220 causes the humidity estimating unit 226 to estimate the humidity of the air flowing toward the indoor heat exchanger 16 (humidity estimating step).
　図８は、室内熱交換器の吸込側・吹出側の空気の温湿度に関する空気線図である。
　なお、図８の横軸は、空気の乾球温度であり、縦軸は、空気の絶対湿度である。また、曲線Ｒは、相対湿度が１００［％］の状態を示す曲線である。また、点Ｐ２は、室内熱交換器１６に向かう吸込空気の温湿度の例であり、点Ｐ３は、この吸込空気が室内熱交換器１６で熱交換した後の吹出空気の温湿度を示している。 FIG. 8 is an air line diagram relating to the temperature and humidity of the air on the suction side and the air outlet side of the indoor heat exchanger.
The horizontal axis in FIG. 8 is the dry-bulb temperature of the air, and the vertical axis is the absolute humidity of the air. A curve R is a curve indicating a state where the relative humidity is 100 [%]. Further, point P2 is an example of the temperature and humidity of the suction air flowing toward the indoor heat exchanger 16, and point P3 indicates the temperature and humidity of the blown air after the suction air exchanges heat with the indoor heat exchanger 16. I have.
　冷房運転中、室内熱交換器１６での空気の熱交換に潜熱が含まれる場合には、吹出側の空気の温度が露点を下回る。つまり、空気線図上では、吹出空気の状態を示す点Ｐ３が相対湿度１００％の曲線Ｒ上にある。したがって、吹出空気温度センサ２８（図２参照）の検出値（点Ｐ３では、乾球温度１０℃）と、「潜熱あり」との判定結果（Ｓ１０５）と、に基づき、空気線図上での点Ｐ３の位置が確定される。 During the cooling operation, if the heat exchange of the air in the indoor heat exchanger 16 includes latent heat, the temperature of the air on the blow-out side falls below the dew point. That is, on the psychrometric chart, the point P3 indicating the state of the blown air is on the curve R at a relative humidity of 100%. Therefore, based on the detection value of the blow-off air temperature sensor 28 (see FIG. 2) (at the point P3, the dry-bulb temperature is 10 ° C.) and the determination result of “latent heat” (S105), the air-line diagram is used. The position of the point P3 is determined.
　一方、吸込側の空気に関しては、吸込空気温度センサ２７（図２参照）の検出値（点Ｐ２では、乾球温度が約２７℃）に基づき、点Ｐ２が破線Ｌ３上に存在することが分かる。そこで、制御部２２０は、冷媒側熱交換量Ｑref（全熱：顕熱＋潜熱）に対する空気側熱交換量Ｑair（顕熱）の比率（Ｑair／Ｑref）に基づいて、吸込空気の湿度（点Ｐ２の位置）を推定する。なお、図８の空気線図に相当するデータが、例えば、データテーブルとして記憶部２１０（図３参照）に予め格納されているものとする。 On the other hand, regarding the air on the suction side, it is understood that the point P2 exists on the broken line L3 based on the detection value of the suction air temperature sensor 27 (see FIG. 2) (at the point P2, the dry bulb temperature is about 27 ° C.). . Therefore, the control unit 220 determines the suction air based on the ratio (Q air / Q ref ) of the air side heat exchange amount Q air (sensible heat) to the refrigerant side heat exchange amount Q ref (total heat: sensible heat + latent heat). (The position of the point P2) is estimated. It is assumed that data corresponding to the psychrometric chart in FIG. 8 is stored in advance in the storage unit 210 (see FIG. 3) as a data table, for example.
　このように制御部２２０は、室内熱交換器１６における空気の熱交換に潜熱が含まれる場合には（図５のＳ１０５）、室内空気の湿度を推定する（Ｓ１０６）。つまり、制御部２２０は、室内熱交換器１６に向かう空気の温度、室内熱交換器１６で熱交換した空気の温度、冷媒側熱交換量Ｑref、及び空気側熱交換量Ｑairに基づいて、室内熱交換器１６に向かう空気の湿度を推定する（Ｓ１０６）。これによって、室内機Ｕｉ（図２参照）に湿度センサが設けられていなくても室内空気の湿度を推定できるため、空気調和機１００の製造コストを削減できる。 As described above, when the latent heat is included in the heat exchange of the air in the indoor heat exchanger 16 (S105 in FIG. 5), the control unit 220 estimates the humidity of the indoor air (S106). That is, the control unit 220 determines the temperature of the air going to the indoor heat exchanger 16, the temperature of the air that has exchanged heat in the indoor heat exchanger 16, the refrigerant-side heat exchange amount Q ref , and the air-side heat exchange amount Q air. Then, the humidity of the air going to the indoor heat exchanger 16 is estimated (S106). Thereby, the humidity of the indoor air can be estimated even if the humidity sensor is not provided in the indoor unit Ui (see FIG. 2), so that the manufacturing cost of the air conditioner 100 can be reduced.
　図５のステップＳ１０７において制御部２２０は、ステップＳ１０６で算出した湿度（例えば、相対湿度）が所定値以上であるか否かを判定する。この所定値は、除湿運転（Ｓ１０８）を行うか否かの判定基準となる閾値であり、予め設定されている。前記した湿度が所定値以上である場合（Ｓ１０７：Ｙｅｓ）、制御部２２０の処理はステップＳ１０８に進む。 In step S107 of FIG. 5, the control unit 220 determines whether the humidity (for example, relative humidity) calculated in step S106 is equal to or more than a predetermined value. This predetermined value is a threshold value serving as a criterion for determining whether or not to perform the dehumidifying operation (S108), and is set in advance. If the humidity is equal to or higher than the predetermined value (S107: Yes), the process of the control unit 220 proceeds to step S108.
　ステップＳ１０８において制御部２２０は、除湿運転を実行する（空調制御ステップ）。例えば、制御部２２０は、除湿運転を行う際、室内膨張弁１９の開度を小さくする指令信号を生成し、空気調和機１００に送信する。これによって、室内熱交換器１６（蒸発器）に流入する冷媒の蒸発温度が低くなり、この冷媒の過熱度が大きくなるため、除湿運転を行うことができる。 に お い て In step S108, control unit 220 executes a dehumidifying operation (air conditioning control step). For example, when performing the dehumidifying operation, the control unit 220 generates a command signal for reducing the opening degree of the indoor expansion valve 19 and transmits the command signal to the air conditioner 100. Thereby, the evaporation temperature of the refrigerant flowing into the indoor heat exchanger 16 (evaporator) decreases, and the degree of superheat of the refrigerant increases, so that the dehumidifying operation can be performed.
　その他、除湿運転を行う際、制御部２２０が、室内ファン１７の回転速度を小さくする指令信号を生成し、空気調和機１００に送信するようにしてもよい。このような制御でも、室内熱交換器１６（蒸発器）に流入する冷媒の過熱度が大きくなるため、除湿運転を行うことができる。なお、除湿運転（Ｓ１０８）を所定時間行った後、制御部２２０が再び冷房運転を行うようにしてもよい。 In addition, when performing the dehumidifying operation, the control unit 220 may generate a command signal for decreasing the rotation speed of the indoor fan 17 and transmit the command signal to the air conditioner 100. Even with such control, the degree of superheat of the refrigerant flowing into the indoor heat exchanger 16 (evaporator) increases, so that the dehumidifying operation can be performed. After performing the dehumidifying operation (S108) for a predetermined time, the control unit 220 may perform the cooling operation again.
　また、ステップＳ１０７において湿度が所定値未満である場合（Ｓ１０７：Ｎｏ）、制御部２２０は、除湿運転を行うことなく、一連の処理を終了する（ＥＮＤ）。つまり、制御部２２０は、除湿運転を行わずに、冷房運転を継続する。湿度が低い場合には、除湿運転を行う必要は特にないからである。 If the humidity is less than the predetermined value in step S107 (S107: No), the control unit 220 ends the series of processes without performing the dehumidifying operation (END). That is, the control unit 220 continues the cooling operation without performing the dehumidifying operation. This is because when the humidity is low, it is not particularly necessary to perform the dehumidifying operation.
　また、ステップＳ１０３においてＱref≦Ｑairである場合や（Ｓ１０３：Ｎｏ）、ステップＳ１０４において比率（Ｑair／Ｑref）が所定範囲内である場合（Ｓ１０４：Ｎｏ）、制御部２２０の処理はステップＳ１０９に進む。 When Q ref ≦ Q air is satisfied in step S103 (S103: No), or when the ratio (Q air / Q ref ) is within a predetermined range in step S104 (S104: No), the process of the control unit 220 is performed. Proceed to step S109.
　ステップＳ１０９において制御部２２０は、判定部２２５によって、室内熱交換器１６における空気の熱交換に潜熱が含まれていない（「潜熱なし」）と判定する。この場合には、室内空気の湿度がそれほど高くないため、除湿運転を行う必要は特にない。
　ステップＳ１０９の処理を行った後、制御部２２０は、一連の処理を終了する（ＥＮＤ）。 In step S109, the control unit 220 determines by the determination unit 225 that the heat exchange of the air in the indoor heat exchanger 16 does not include latent heat (“no latent heat”). In this case, since the humidity of the room air is not so high, it is not particularly necessary to perform the dehumidification operation.
After performing the process of step S109, the control unit 220 ends a series of processes (END).
　なお、図５では省略しているが、ステップＳ１０６で推定された湿度の履歴情報が記憶部２１０（図３参照）に記憶されるようにしてもよい。そして、記憶部２１０に記憶された湿度の履歴情報を制御部２２０がリモコンＲｅ（図２参照）又は携帯端末３００（端末機：図１参照）に送信するようにすることが好ましい。これによって、室内空気の湿度の時間的な変化をユーザが容易に把握できる。また、制御部２２０が、室内空気の湿度や比率（Ｑair／Ｑref）の履歴情報を遠隔監視センタ（図示せず）に送信するようにしてもよい。この遠隔監視センタのコンピュータ（図示せず）も「端末機」に含まれる。 Although omitted in FIG. 5, the history information of the humidity estimated in step S106 may be stored in the storage unit 210 (see FIG. 3). It is preferable that the control unit 220 transmits the humidity history information stored in the storage unit 210 to the remote controller Re (see FIG. 2) or the portable terminal 300 (terminal: see FIG. 1). Thereby, the user can easily grasp the temporal change of the humidity of the indoor air. Further, the control unit 220 may transmit the history information of the humidity and the ratio (Q air / Q ref ) of the indoor air to a remote monitoring center (not shown). The computer (not shown) of the remote monitoring center is also included in the “terminal”.
＜効果＞
　本実施形態によれば、冷媒側熱交換量Ｑrefと、空気側熱交換量Ｑairと、の大小関係等に基づいて（図５のＳ１０３，Ｓ１０４）、室内熱交換器１６での空気の熱交換に潜熱が含まれているか否かを制御部２２０が判定する（Ｓ１０５，Ｓ１０９）。そして、前記した熱交換に潜熱が含まれると判定した場合（Ｓ１０５）、制御部２２０は、室内空気の湿度を推定する（Ｓ１０６）。 <Effect>
According to the present embodiment, based on the magnitude relationship between the refrigerant-side heat exchange amount Qref and the air-side heat exchange amount Qair (S103, S104 in FIG. 5), the air flow in the indoor heat exchanger 16 is determined. The control unit 220 determines whether or not latent heat is included in the heat exchange (S105, S109). When it is determined that latent heat is included in the heat exchange (S105), the control unit 220 estimates the humidity of the room air (S106).
　これによって、室内機Ｕｉに湿度センサ（図示せず）が設けられていなくても、室内空気の湿度を正確に推定できるため、空気調和機１００の製造コストを削減できる。また、室内空気の湿度に基づき、制御部２２０が除湿運転を適宜に行うことで（図５のＳ１０８）、快適性の高い空調を行うことができる。特に、高温多湿の地域に空気調和機１００が設けられる場合には、本実施形態の制御が有効である。 (4) With this, even if the indoor unit Ui is not provided with a humidity sensor (not shown), the humidity of the indoor air can be accurately estimated, so that the manufacturing cost of the air conditioner 100 can be reduced. In addition, the controller 220 appropriately performs the dehumidifying operation based on the humidity of the indoor air (S108 in FIG. 5), so that highly comfortable air conditioning can be performed. In particular, when the air conditioner 100 is provided in a hot and humid area, the control of the present embodiment is effective.
≪変形例≫
　以上、本発明に係る空調システムＷについて実施形態で説明したが、本発明はこれらの記載に限定されるものではなく、種々の変更を行うことができる。
　例えば、実施形態では、冷媒側熱交換量Ｑrefよりも空気側熱交換量Ｑairのほうが小さく（図５のＳ１０３：Ｙｅｓ）、かつ、比率（Ｑair／Ｑref）が所定範囲外である場合（Ｓ１０４：Ｙｅｓ）、制御部２２０が湿度を推定する処理（Ｓ１０６）について説明したが、これに限らない。例えば、ステップＳ１０５の判定処理を省略し、冷媒側熱交換量Ｑrefよりも空気側熱交換量Ｑairの方が小さい場合、室内熱交換器１６に向かう空気の湿度を制御部２２０が推定するようにしてもよい。このような処理でも、室内空気の湿度を適切に算出することが可能である。 ≪Modified example≫
As described above, the air conditioning system W according to the present invention has been described in the embodiments, but the present invention is not limited to these descriptions, and various changes can be made.
For example, in the embodiment, the air-side heat exchange amount Q air is smaller than the refrigerant-side heat exchange amount Q ref (S103: Yes in FIG. 5), and the ratio (Q air / Q ref ) is out of the predetermined range. In the case (S104: Yes), the process in which the control unit 220 estimates the humidity (S106) has been described, but the present invention is not limited to this. For example, if the determination process of step S105 is omitted and the air-side heat exchange amount Q air is smaller than the refrigerant-side heat exchange amount Q ref , the control unit 220 estimates the humidity of the air flowing toward the indoor heat exchanger 16. You may do so. Even in such processing, it is possible to appropriately calculate the humidity of the room air.
　また、実施形態では、制御部２２０（図３参照）が学習部２２３（図３参照）を備える構成について説明したが、この学習部２２３を省略してもよい。そして、室内熱交換器１６での空気の熱交換に潜熱が含まれないような運転条件で空調が行われた場合において、比率（Ｑair／Ｑref）が“１”に略等しいとき、制御部２２０が、室内空気の湿度を推定するようにしてもよい。具体的には、暖房運転中、又は、設定温度が所定値以上である冷房運転中、冷媒側熱交換量Ｑrefと空気側熱交換量Ｑairとが略等しい場合において、その後に設定温度が前記した所定値未満である冷房運転を行うとき、制御部２２０が、室内空気の湿度を推定する。これによって、室内空気の湿度の推定に関する誤差をさらに小さくすることができる。 In the embodiment, the configuration in which the control unit 220 (see FIG. 3) includes the learning unit 223 (see FIG. 3) has been described, but the learning unit 223 may be omitted. When the ratio (Q air / Q ref ) is substantially equal to “1” in the case where the air conditioning is performed under the operating condition that the latent heat is not included in the heat exchange of the air in the indoor heat exchanger 16, the control is performed. The unit 220 may estimate the humidity of the room air. Specifically, during the heating operation, or during the cooling operation in which the set temperature is equal to or higher than the predetermined value, when the refrigerant-side heat exchange amount Qref and the air-side heat exchange amount Qair are substantially equal, the set temperature is thereafter When performing the cooling operation that is less than the predetermined value, the control unit 220 estimates the humidity of the indoor air. As a result, the error relating to the estimation of the humidity of the indoor air can be further reduced.
　また、例えば、室内熱交換器１６やエアフィルタ１８に塵埃が付着していると、室内ファン１７の回転速度に対応する設計風量よりも実際の風量の方が小さくなる。その結果、冷媒側熱交換量Ｑrefよりも空気側熱交換量Ｑairの方が大きくなることがある。
　また、圧縮機１１において圧縮室（図示せず）のシール性が低下すると、圧縮室から冷媒が漏れやすくなるため、冷媒側熱交換量Ｑrefよりも空気側熱交換量Ｑairの方が小さくなることもある。
　そこで、比率（Ｑair／Ｑref）が「所定範囲」内である場合に制御部２２０が室内空気の湿度を推定する処理に関して、さらに次の処理を行うようにしてもよい。すなわち、暖房運転中、又は、設定温度が所定値以上である冷房運転中、冷媒側熱交換量Ｑref及び空気側熱交換量Ｑairのうち一方が他方よりも大きい場合、制御部２２０が、前記した「所定範囲」を補正するようにしてもよい。つまり、室内熱交換器１６での空気の熱交換に潜熱が含まれていないと想定されるときの比率（Ｑair／Ｑref）に基づき、制御部２２０が「所定範囲」を補正（学習）するようにしてもよい。これによって、室内熱交換器１６等に塵埃が付着していたり、圧縮機１１が劣化したりしても、制御部２２０が、室内空気の湿度を高精度で推定できる。 Further, for example, when dust adheres to the indoor heat exchanger 16 and the air filter 18, the actual air volume is smaller than the designed air volume corresponding to the rotation speed of the indoor fan 17. As a result, the air side heat exchange amount Q air may be larger than the refrigerant side heat exchange amount Q ref .
Further, when the sealing performance of the compression chamber (not shown) in the compressor 11 is reduced, the refrigerant is likely to leak from the compression chamber, so that the air-side heat exchange amount Q air is smaller than the refrigerant-side heat exchange amount Q ref. It can be.
Therefore, when the ratio (Q air / Q ref ) is within the “predetermined range”, the control unit 220 may perform the following process regarding the process of estimating the humidity of the room air. That is, during the heating operation, or during the cooling operation in which the set temperature is equal to or higher than the predetermined value, when one of the refrigerant-side heat exchange amount Qref and the air-side heat exchange amount Qair is larger than the other, the control unit 220: The aforementioned “predetermined range” may be corrected. That is, the control unit 220 corrects (learns) the “predetermined range” based on the ratio (Q air / Q ref ) when latent heat is not included in the heat exchange of the air in the indoor heat exchanger 16. You may make it. Thereby, even if dust adheres to the indoor heat exchanger 16 or the like or the compressor 11 deteriorates, the control unit 220 can estimate the humidity of the indoor air with high accuracy.
　また、実施形態では、空調管理装置２００が空気調和機１００に指令信号を出力する構成について説明したが、これに限らない。例えば、次に説明するように、空調管理装置２００が、空気調和機１００及び除湿機４００（図９参照）の両方に指令信号を出力する構成であってもよい。 In the embodiment, the configuration in which the air-conditioning management device 200 outputs a command signal to the air conditioner 100 has been described. However, the configuration is not limited to this. For example, as described below, the air conditioning management device 200 may be configured to output a command signal to both the air conditioner 100 and the dehumidifier 400 (see FIG. 9).
　図９は、変形例に係る空調システムＷＡを含む概略的な構成図である。
　図９に示すように、空調システムＷＡは、空気調和機１００と、空調管理装置２００と、除湿機４００と、を備えている。空調管理装置２００は、通信線Ｍを介して室外機Ｕｏや室内機Ｕｉに接続されるとともに、通信線Ｍを介して除湿機４００にも接続されている。つまり、室内ファン１７の駆動に伴って空気調和された空気が吹き出される空調対象空間に設けられる除湿機４００と、空調管理装置２００の制御部２２０（図３参照）と、が互いに通信可能になっている。図９に示す除湿機４００は、主に除湿を行う機器である。なお、除湿機４００の構成について周知であるから、詳細な説明を省略する。 FIG. 9 is a schematic configuration diagram including an air conditioning system WA according to a modification.
As shown in FIG. 9, the air conditioning system WA includes an air conditioner 100, an air conditioning management device 200, and a dehumidifier 400. The air conditioning management device 200 is connected to the outdoor unit Uo and the indoor unit Ui via the communication line M, and is also connected to the dehumidifier 400 via the communication line M. That is, the dehumidifier 400 provided in the air-conditioned space from which the air-conditioned air is blown out with the driving of the indoor fan 17 and the control unit 220 (see FIG. 3) of the air-conditioning management device 200 can communicate with each other. Has become. The dehumidifier 400 shown in FIG. 9 is a device that mainly performs dehumidification. Since the configuration of the dehumidifier 400 is well known, a detailed description is omitted.
　このような構成において、空調管理装置２００の制御部２２０（図３参照）は、室内空気の湿度が所定値未満である場合には、除湿運転を行わせる信号を除湿機４００に出力する。このように、室内空気の湿度がそれほど高くない場合には、除湿機４００のみに除湿運転を行わせることで、空調の高効率化を図ることができる。なお、前記した場合において、空気調和機１００は停止状態であってもよいし、また、冷房運転等を行っていてもよい。
　一方、室内空気の湿度が前記した所定値以上である場合、制御部２２０は、除湿運転を行わせる信号を除湿機４００に出力するとともに、冷媒回路Ｆ（図２参照）を用いて除湿運転を行う。これによって、除湿機４００では足りない分の除湿を空気調和機１００の運転で補うことができる。 In such a configuration, the control unit 220 (see FIG. 3) of the air conditioning management device 200 outputs a signal for performing the dehumidifying operation to the dehumidifier 400 when the humidity of the room air is less than the predetermined value. As described above, when the humidity of the room air is not so high, the dehumidifying operation is performed only by the dehumidifier 400, so that the efficiency of the air conditioning can be increased. In the above case, the air conditioner 100 may be in a stopped state, or may be performing a cooling operation or the like.
On the other hand, when the humidity of the indoor air is equal to or higher than the predetermined value, the control unit 220 outputs a signal for performing the dehumidifying operation to the dehumidifier 400, and performs the dehumidifying operation using the refrigerant circuit F (see FIG. 2). Do. Thus, the operation of the air conditioner 100 can compensate for the dehumidification that the dehumidifier 400 lacks.
　また、空気の熱交換に潜熱が含まれるように室内熱交換器１６を蒸発器として機能させる処理中、室内空気の湿度の履歴情報が記憶部２１０に記憶される場合において、制御部２２０が次の処理を行うようにしてもよい。すなわち、制御部２２０が、室内空気の湿度の履歴情報に基づいて、将来の湿度を予測し、その予測結果に基づいて、前記した処理を将来に行う際の冷房運転の設定温度を決めるようにしてもよい。その一例を挙げると、制御部２２０は、直近の数日間に推定した室内空気の湿度の移動平均を算出し、この移動平均に基づいて、次回に湿度を推定する際の冷房運転時の設定温度を決定する。これによって、湿度を推定する際の冷房運転の設定温度が高すぎたり、また、低すぎたりすることを防止できる。 Also, during the process of making the indoor heat exchanger 16 function as an evaporator so that latent heat is included in the heat exchange of air, when the history information of the humidity of the indoor air is stored in the storage unit 210, the control unit 220 May be performed. That is, the control unit 220 predicts the future humidity based on the history information of the indoor air humidity, and determines the set temperature of the cooling operation when performing the above-described processing in the future based on the prediction result. You may. As an example, the control unit 220 calculates a moving average of the indoor air humidity estimated in the last several days, and based on this moving average, sets the temperature at the time of the cooling operation when estimating the humidity next time. To determine. As a result, it is possible to prevent the set temperature of the cooling operation when estimating the humidity from being too high or too low.
　また、空気の熱交換に潜熱が含まれるように室内熱交換器１６を蒸発器として機能させる処理を行う際、制御部２２０が、通常の冷房運転時よりも風量を小さくするか、又は、室内機Ｕｉ（図２参照）の上下方向の風向を通常の冷房運転時よりも水平に近づけることが好ましい。これによって、室内空気の湿度を推定する際、冷風が下方に吹き降ろされることを抑制し、ひいては、ユーザにとっての快適性を高めることができる。 Further, when performing the process of causing the indoor heat exchanger 16 to function as an evaporator so that latent heat is included in the heat exchange of the air, the control unit 220 may reduce the air volume as compared with the normal cooling operation, or It is preferable to make the wind direction in the vertical direction of the machine Ui (see FIG. 2) more horizontal than in the normal cooling operation. Thereby, when estimating the humidity of the indoor air, it is possible to suppress the cool air from being blown down, and thereby to improve the comfort for the user.
　また、空気の熱交換に潜熱が含まれるように室内熱交換器１６を蒸発器として機能させる処理を行う際、制御部２２０が、室内熱交換器１６を蒸発器として機能させ、この室内熱交換器１６を凍結させることが好ましい。より詳しく説明すると、制御部２２０からの指令に応じて、室外制御回路３１や室内制御回路３２が、圧縮機１１を駆動し、さらに、通常の冷房運転時よりも室内膨張弁１９の開度を小さくする。これによって、低圧で蒸発温度の低い冷媒が室内熱交換器１６に流入するため、空気中の水分が室内熱交換器１６に着霜し、その霜や氷が成長しやすくなる。このとき、室内熱交換器１６での空気の熱交換には潜熱が確実に含まれるため、室内空気の湿度を高精度で推定できる。 Further, when performing the process of making the indoor heat exchanger 16 function as an evaporator so that latent heat is included in the heat exchange of air, the control unit 220 causes the indoor heat exchanger 16 to function as an evaporator, Preferably, the vessel 16 is frozen. More specifically, in response to a command from the control unit 220, the outdoor control circuit 31 and the indoor control circuit 32 drive the compressor 11, and further increase the opening degree of the indoor expansion valve 19 as compared with a normal cooling operation. Make it smaller. As a result, the refrigerant having a low pressure and a low evaporation temperature flows into the indoor heat exchanger 16, so that moisture in the air is frosted on the indoor heat exchanger 16, and the frost and ice easily grow. At this time, since the latent heat is reliably included in the heat exchange of the air in the indoor heat exchanger 16, the humidity of the indoor air can be estimated with high accuracy.
　そして、室外制御回路３１や室内制御回路３２は、室内熱交換器１６を凍結させた後、室内熱交換器１６を解凍する。例えば、圧縮機１１や室内ファン１７が停止状態にされることで、室内熱交換器１６の霜や氷が室温で自然解凍され、室内熱交換器１６のフィン（図示せず）を伝って多量の水が流れ落ちる。その結果、室内熱交換器１６の塵埃が洗い流される。このような室内熱交換器１６の洗浄方法を「凍結洗浄」という。
　なお、前記した「凍結洗浄」に代えて、室内熱交換器１６を蒸発器として機能させ、この室内熱交換器１６を結露させてもよい。このような「結露洗浄」によっても、室内熱交換器１６の塵埃が洗い流される。また、「結露洗浄」を行っているときに制御部２２０が室内空気の湿度を推定することが好ましい。このような方法でも、室内空気の湿度を高精度で推定できる。 Then, the outdoor control circuit 31 and the indoor control circuit 32 defrost the indoor heat exchanger 16 after freezing the indoor heat exchanger 16. For example, when the compressor 11 and the indoor fan 17 are stopped, frost and ice of the indoor heat exchanger 16 are naturally thawed at room temperature, and a large amount of the frost and ice travel along the fins (not shown) of the indoor heat exchanger 16. Water runs down. As a result, dust in the indoor heat exchanger 16 is washed away. Such a method of cleaning the indoor heat exchanger 16 is referred to as “freeze cleaning”.
Instead of the above-mentioned "freeze washing", the indoor heat exchanger 16 may be made to function as an evaporator, and the indoor heat exchanger 16 may be condensed. The dust of the indoor heat exchanger 16 is also washed away by such “condensation washing”. Further, it is preferable that the control unit 220 estimates the humidity of the indoor air when performing the “condensation cleaning”. Even with such a method, the humidity of the room air can be estimated with high accuracy.
　また、リモコンＲｅや携帯端末３００の指令に応じて、制御部２２０が、室内空気の湿度を推定する処理を開始するようにしてもよい。これによって、空気調和機１００の湿度をユーザが確かめたいとき、室内空気の湿度の推定結果をリモコンＲｅ等に表示させることができる。 (4) The control unit 220 may start the process of estimating the humidity of the room air in response to a command from the remote controller Re or the portable terminal 300. Thus, when the user wants to check the humidity of the air conditioner 100, the estimation result of the indoor air humidity can be displayed on the remote controller Re or the like.
　また、各実施形態では、空調システムＷ（図２参照）が空調管理装置２００を備える構成について説明したが、これに限らない。例えば、空調管理装置２００を省略し、湿度の推定に関する一連の処理を室外制御回路３１（制御部）や室内制御回路３２（制御部）が行うようにしてもよい。 In each embodiment, the configuration in which the air-conditioning system W (see FIG. 2) includes the air-conditioning management device 200 has been described, but is not limited thereto. For example, the air-conditioning management device 200 may be omitted, and the outdoor control circuit 31 (control unit) or the indoor control circuit 32 (control unit) may perform a series of processes related to estimation of humidity.
　また、各実施形態では、複数の室内機Ｕｉ（図１参照）が設けられるマルチ型の空気調和機１００について説明したが、これに限らない。例えば、室内機と室外機とが一台ずつ設けられた壁掛型の空気調和機（図示せず）の他、さまざまな種類の空気調和機に各実施形態を適用可能である。 In each embodiment, the multi-type air conditioner 100 provided with the plurality of indoor units Ui (see FIG. 1) has been described, but the present invention is not limited to this. For example, the embodiments can be applied to various types of air conditioners, in addition to a wall-mounted air conditioner (not shown) provided with one indoor unit and one outdoor unit.
　なお、湿度の推定等の処理（図５参照）をコンピュータに実行させるためのプログラムを通信回線を介して提供することが可能であり、また、ＣＤ－ＲＯＭ等の記録媒体に書き込んで配布することも可能である。 A program for causing a computer to execute processing such as estimation of humidity (see FIG. 5) can be provided via a communication line, and can be written and distributed on a recording medium such as a CD-ROM. Is also possible.
　また、各実施形態は本発明を分かりやすく説明するために詳細に記載したものであり、必ずしも説明した全ての構成を備えるものに限定されない。また、各実施形態の構成の一部について、他の構成の追加・削除・置換をすることが可能である。
　また、前記した機構や構成は説明上必要と考えられるものを示しており、製品上必ずしも全ての機構や構成を示しているとは限らない。 Each embodiment has been described in detail in order to explain the present invention in an easily understandable manner, and is not necessarily limited to one having all the described configurations. Also, for a part of the configuration of each embodiment, it is possible to add, delete, or replace another configuration.
In addition, the above-described mechanisms and configurations are shown to be necessary for the description, and do not necessarily indicate all the mechanisms and configurations on the product.
　１１　　圧縮機
　１２　　室外熱交換器（凝縮器／蒸発器）
　１３　　室外ファン
　１４　　室外膨張弁（膨張弁）
　１５　　四方弁
　１６　　室内熱交換器（蒸発器／凝縮器）
　１７　　室内ファン
　１８　　エアフィルタ
　１９　　室内膨張弁（膨張弁）
　３１　　室外制御回路（制御部）
　３２　　室内制御回路（制御部）
　５３　　フィルタ清掃部
　１００　空気調和機
　２００　空調管理装置
　２１０　記憶部
　２２０　制御部
　２３０　報知部
　３００　携帯端末（端末機）
　４００　除湿機
　Ｆ　　　冷媒回路
　Ｒｅ　　リモコン
　Ｗ，ＷＡ　空調システム 11 Compressor 12 Outdoor heat exchanger (condenser / evaporator)
13 outdoor fan 14 outdoor expansion valve (expansion valve)
15 Four-way valve 16 Indoor heat exchanger (evaporator / condenser)
17 indoor fan 18 air filter 19 indoor expansion valve (expansion valve)
31 Outdoor control circuit (control unit)
32 Indoor control circuit (control unit)
53 Filter cleaning unit 100 Air conditioner 200 Air conditioning management device 210 Storage unit 220 Control unit 230 Notification unit 300 Portable terminal (terminal)
400 Dehumidifier F Refrigerant circuit Re Remote controller W, WA Air conditioning system

Claims (14)

  1. 　圧縮機、凝縮器、膨張弁、及び蒸発器を順次に介して冷媒が循環する冷媒回路を備え、
    　前記凝縮器及び前記蒸発器の一方は室外熱交換器であり、他方は室内熱交換器であり、
    　前記室内熱交換器の付近に配置される室内ファンと、
    　前記室内ファンの回転速度に対応する所定の設計風量が記憶されている記憶部と、
    　空調制御を行う制御部と、をさらに備え、
    　前記制御部は、
    　前記室内熱交換器の一端側・他端側の冷媒の温度を含む情報に基づき、前記室内熱交換器における冷媒側熱交換量を推定するとともに、
    　前記室内熱交換器に向かう空気の温度、前記室内熱交換器で熱交換した空気の温度、及び、前記室内ファンの回転速度に対応する前記設計風量に基づいて、前記室内熱交換器における空気側熱交換量を推定し、
    　前記冷媒側熱交換量よりも前記空気側熱交換量の方が小さい場合、前記室内熱交換器に向かう空気の温度、前記室内熱交換器で熱交換した空気の温度、前記冷媒側熱交換量、及び前記空気側熱交換量に基づいて、前記室内熱交換器に向かう空気の湿度を推定し、当該湿度に基づいて空調制御を行う空調システム。     A compressor, a condenser, an expansion valve, and a refrigerant circuit in which the refrigerant circulates sequentially through the evaporator,
    One of the condenser and the evaporator is an outdoor heat exchanger, the other is an indoor heat exchanger,
    An indoor fan arranged near the indoor heat exchanger,
    A storage unit in which a predetermined design airflow corresponding to the rotation speed of the indoor fan is stored,
    A control unit for performing air conditioning control,
    The control unit includes:
    Based on information including the temperature of the refrigerant at one end and the other end of the indoor heat exchanger, and estimating a refrigerant-side heat exchange amount in the indoor heat exchanger,
    Based on the temperature of the air flowing toward the indoor heat exchanger, the temperature of the air that has exchanged heat in the indoor heat exchanger, and the design airflow corresponding to the rotation speed of the indoor fan, the air side in the indoor heat exchanger Estimate the amount of heat exchange,
    When the air-side heat exchange amount is smaller than the refrigerant-side heat exchange amount, the temperature of the air flowing to the indoor heat exchanger, the temperature of the air that has exchanged heat in the indoor heat exchanger, the refrigerant-side heat exchange amount And an air conditioning system for estimating the humidity of air heading toward the indoor heat exchanger based on the air-side heat exchange amount, and performing air-conditioning control based on the humidity.
  2. 　前記制御部は、前記湿度が所定値以上である場合、除湿運転を行うこと
    　を特徴とする請求項１に記載の空調システム。     The air conditioning system according to claim 1, wherein the control unit performs a dehumidification operation when the humidity is equal to or more than a predetermined value.
  3. 　前記制御部は、前記除湿運転を行う際、前記膨張弁の開度を小さくすること
    　を特徴とする請求項２に記載の空調システム。     The air conditioning system according to claim 2, wherein the control unit reduces the opening of the expansion valve when performing the dehumidifying operation.
  4. 　前記制御部は、前記除湿運転を行う際、前記室内ファンの回転速度を小さくすること
    　を特徴とする請求項２に記載の空調システム。     The air conditioning system according to claim 2, wherein the control unit reduces the rotation speed of the indoor fan when performing the dehumidifying operation.
  5. 　暖房運転中、又は、設定温度が所定値以上である冷房運転中、前記冷媒側熱交換量と前記空気側熱交換量とが等しい場合において、その後に設定温度が前記所定値未満である冷房運転を行うとき、前記制御部は、前記湿度を推定すること
    　を特徴とする請求項１に記載の空調システム。     During the heating operation, or during the cooling operation in which the set temperature is equal to or higher than the predetermined value, when the refrigerant-side heat exchange amount is equal to the air-side heat exchange amount, thereafter, the cooling operation in which the set temperature is lower than the predetermined value The air conditioning system according to claim 1, wherein, when performing the control, the control unit estimates the humidity.
  6. 　前記制御部は、前記冷媒側熱交換量に対する前記空気側熱交換量の比率が所定範囲内である場合、前記湿度を推定し、
    　暖房運転中、又は、設定温度が所定値以上である冷房運転中、前記冷媒側熱交換量及び前記空気側熱交換量のうち一方が他方よりも大きい場合、前記所定範囲を補正すること
    　を特徴とする請求項１に記載の空調システム。     When the ratio of the air-side heat exchange amount to the refrigerant-side heat exchange amount is within a predetermined range, the control unit estimates the humidity,
    During the heating operation, or during the cooling operation in which the set temperature is equal to or higher than a predetermined value, when one of the refrigerant-side heat exchange amount and the air-side heat exchange amount is larger than the other, the predetermined range is corrected. The air conditioning system according to claim 1, wherein:
  7. 　前記室内ファンの駆動に伴って空気調和された空気が吹き出される空調対象空間に設けられる除湿機をさらに備え、
    　前記除湿機は、前記制御部と通信可能であり、
    　前記制御部は、
    　前記湿度が所定値未満である場合には、除湿運転を行わせる信号を前記除湿機に出力し、
    　前記湿度が前記所定値以上である場合には、除湿運転を行わせる信号を前記除湿機に出力するとともに、前記冷媒回路を用いて除湿運転を行うこと
    　を特徴とする請求項１に記載の空調システム。     Further provided is a dehumidifier provided in an air-conditioned space in which air-conditioned air is blown out with the driving of the indoor fan,
    The dehumidifier can communicate with the control unit,
    The control unit includes:
    If the humidity is less than a predetermined value, a signal for performing a dehumidification operation is output to the dehumidifier,
    If the humidity is equal to or higher than the predetermined value, a signal for performing a dehumidifying operation is output to the dehumidifier, and the dehumidifying operation is performed using the refrigerant circuit. system.
  8. 　前記制御部は、前記湿度を推定する際、前記室内熱交換器での空気の熱交換に潜熱が含まれるように、前記室内熱交換器を前記蒸発器として機能させる処理を行うこと
    　を特徴とする請求項１に記載の空調システム。     The controller, when estimating the humidity, performs a process of causing the indoor heat exchanger to function as the evaporator such that latent heat is included in heat exchange of air in the indoor heat exchanger. The air-conditioning system according to claim 1.
  9. 　前記処理中に前記制御部によって推定された前記湿度の履歴情報が、前記記憶部に記憶され、
    　前記制御部は、前記記憶部に記憶された前記湿度の履歴情報をリモコン又は端末機に送信すること
    　を特徴とする請求項８に記載の空調システム。     History information of the humidity estimated by the control unit during the processing is stored in the storage unit,
    The air conditioning system according to claim 8, wherein the control unit transmits the humidity history information stored in the storage unit to a remote control or a terminal.
  10. 　前記処理中に前記制御部によって推定された前記湿度の履歴情報が、前記記憶部に記憶され、
    　前記制御部は、前記湿度の履歴情報に基づいて、将来の前記湿度を予測し、その予測結果に基づいて、将来に前記処理を行う際の冷房運転の設定温度を決めること
    　を特徴とする請求項８に記載の空調システム。     History information of the humidity estimated by the control unit during the processing is stored in the storage unit,
    The control unit predicts the future humidity based on the history information of the humidity, and determines a set temperature of a cooling operation when performing the process in the future based on the prediction result. Item 9. An air conditioning system according to item 8.
  11. 　前記制御部は、前記処理を行う際、通常の冷房運転時よりも風量を小さくするか、又は、室内機の上下方向の風向を通常の冷房運転時よりも水平に近づけること
    　を特徴とする請求項８に記載の空調システム。     The control unit, when performing the process, makes the air volume smaller than in a normal cooling operation, or makes the vertical wind direction of the indoor unit closer to horizontal than in a normal cooling operation. Item 9. An air conditioning system according to item 8.
  12. 　前記制御部は、前記処理を行う際、前記室内熱交換器を蒸発器として機能させ、当該室内熱交換器を凍結又は結露させること
    　を特徴とする請求項８に記載の空調システム。     The air conditioning system according to claim 8, wherein, when performing the processing, the control unit causes the indoor heat exchanger to function as an evaporator and causes the indoor heat exchanger to freeze or dew.
  13. 　空気調和機の室内熱交換器の一端側・他端側の冷媒の温度を含む情報に基づき、前記室内熱交換器における冷媒側熱交換量を制御部が推定する冷媒側熱交換量推定ステップと、
    　前記室内熱交換器に向かう空気の温度、前記室内熱交換器で熱交換した空気の温度、及び、前記室内熱交換器の付近に配置された室内ファンの回転速度に対応する所定の設計風量に基づいて、前記室内熱交換器における空気側熱交換量を前記制御部が推定する空気側熱交換量推定ステップと、
    　前記冷媒側熱交換量よりも前記空気側熱交換量の方が小さい場合、前記室内熱交換器に向かう空気の温度、前記室内熱交換器で熱交換した空気の温度、前記冷媒側熱交換量、及び前記空気側熱交換量に基づいて、前記室内熱交換器に向かう空気の湿度を前記制御部が推定する湿度推定ステップと、
    　前記湿度に基づいて、前記制御部が空調制御を行う空調制御ステップと、を含む空調方法。     Based on information including the temperature of the refrigerant at one end and the other end of the indoor heat exchanger of the air conditioner, a refrigerant-side heat exchange amount estimating step in which the control unit estimates a refrigerant-side heat exchange amount in the indoor heat exchanger. ,
    The temperature of the air flowing toward the indoor heat exchanger, the temperature of the air that has exchanged heat in the indoor heat exchanger, and a predetermined design airflow corresponding to the rotation speed of an indoor fan disposed near the indoor heat exchanger. An air-side heat exchange amount estimation step in which the control unit estimates an air-side heat exchange amount in the indoor heat exchanger,
    When the air-side heat exchange amount is smaller than the refrigerant-side heat exchange amount, the temperature of the air flowing to the indoor heat exchanger, the temperature of the air that has exchanged heat in the indoor heat exchanger, the refrigerant-side heat exchange amount And, based on the air-side heat exchange amount, a humidity estimation step in which the control unit estimates the humidity of air heading for the indoor heat exchanger,
    An air conditioning control step, wherein the control unit performs air conditioning control based on the humidity.
  14. 　請求項１３に記載の空調方法をコンピュータに実行させるためのプログラム。 A program for causing a computer to execute the air conditioning method according to claim 13.
PCT/JP2018/024920 2018-06-29 2018-06-29 Air conditioning system, air conditioning method, and program WO2020003529A1 (en)

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