WO2021157105A1 - Air conditioning system - Google Patents

Air conditioning system Download PDF

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Publication number
WO2021157105A1
WO2021157105A1 PCT/JP2020/019607 JP2020019607W WO2021157105A1 WO 2021157105 A1 WO2021157105 A1 WO 2021157105A1 JP 2020019607 W JP2020019607 W JP 2020019607W WO 2021157105 A1 WO2021157105 A1 WO 2021157105A1
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WO
WIPO (PCT)
Prior art keywords
indoor
temperature
set temperature
unit
air conditioning
Prior art date
Application number
PCT/JP2020/019607
Other languages
French (fr)
Japanese (ja)
Inventor
貴玄 中村
宣明 田崎
冬樹 佐藤
Original Assignee
三菱電機株式会社
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Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Publication of WO2021157105A1 publication Critical patent/WO2021157105A1/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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • 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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • 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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/38—Failure diagnosis
    • 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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/49—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring ensuring correct operation, e.g. by trial operation or configuration checks
    • 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

Definitions

  • the present disclosure relates to an air conditioning system including a control device.
  • Patent Document 1 discloses an air-conditioning control support device that attempts to identify a time zone in which a complaint is likely to occur based on a complaint from a user and an expected temperature in a region. Specifically, Patent Document 1 describes the time zone during which air conditioning is malfunctioning and users are likely to make complaints, such as past complaint history, outdoor temperature, set temperature, and weather forecast. Use to predict. The prediction result is used as control information for adjusting the indoor temperature to an appropriate temperature.
  • the air conditioning control support device disclosed in Patent Document 1 predicts an air conditioning malfunction by using external information different from the air conditioning system such as past claim history and weather forecast, and uses the prediction result as control information. .. That is, in Patent Document 1, it is complicated to collect information necessary for predicting a malfunction of air conditioning.
  • This disclosure is made to solve the above-mentioned problems, and provides an air conditioning system that makes it easy to collect information necessary for predicting an air conditioning malfunction.
  • the air conditioning system includes an outdoor unit provided outdoors, a plurality of indoor units connected to the outdoor unit, and a plurality of indoor units connected to the outdoor unit to adjust the air in a plurality of air-conditioned spaces so as to reach a set set temperature. It includes an indoor temperature detector that detects the indoor temperature of the air-conditioned space and a control device that controls the operation of the outdoor unit and the indoor unit. The control device includes the indoor temperature and the set temperature detected by the indoor temperature detector. Outputs a calculation means that calculates the set temperature arrival time until the room temperature reaches the set temperature, and a list of a plurality of indoor units arranged in the order of the set temperature arrival time calculated by the calculation means. Means and.
  • the output means outputs a list in which a plurality of indoor units are arranged in the order of the set temperature arrival time calculated based on the indoor temperature and the set temperature.
  • the set temperature arrival time is information on the air conditioning system, that is, the room temperature and the set temperature.
  • the present disclosure predicts the malfunction of air conditioning by using the information of the air conditioning system instead of the external information. Therefore, it is easy to collect the information necessary for predicting the malfunction of the air conditioner.
  • FIG. 1 It is a schematic diagram which shows the air-conditioning system which concerns on Embodiment 1.
  • FIG. It is a circuit diagram which shows the air-conditioning system which concerns on Embodiment 1.
  • FIG. It is a graph explaining the room temperature control which concerns on Embodiment 1.
  • FIG. It is a functional block diagram which shows the control device which concerns on Embodiment 1.
  • FIG. It is a graph which shows the operation of the expansion part at the time of a heating operation which concerns on Embodiment 1.
  • FIG. It is a graph which shows the operation of the expansion part at the time of a cooling operation which concerns on Embodiment 1.
  • FIG. It is a graph which shows the malfunction of the expansion part at the time of a heating operation which concerns on Embodiment 1.
  • FIG. It is a flowchart which shows the operation of the control device which concerns on Embodiment 1.
  • FIG. It is a graph which shows the average value of the set temperature arrival time which concerns on Embodiment 2. It is a graph which shows the number of times of the thermoon which concerns on Embodiment 3. It is a graph which shows the number of times of operation of the indoor unit which concerns on Embodiment 4.
  • FIG. 1 is a schematic view showing an air conditioning system 1 according to the first embodiment.
  • the air conditioning system 1 includes an outdoor unit 2, a plurality of indoor units 3, a display device 5, and a control device 4.
  • the outdoor unit 2 is provided outdoors.
  • the plurality of indoor units 3 are connected to the outdoor unit 2 and adjust the air in the plurality of air-conditioned spaces so as to reach a set set temperature.
  • the case where the number of outdoor units 2 is one is illustrated, but the number of outdoor units 2 may be a plurality of units.
  • the case where the number of indoor units 3 is four is illustrated, but the number of indoor units 3 may be one to three or five or more.
  • FIG. 2 is a circuit diagram showing an air conditioning system 1 according to the first embodiment.
  • the outdoor unit 2 is provided with, for example, a compressor 11, a flow path switching device 12, an outdoor heat exchanger 13, an outdoor blower 14, an outdoor expansion unit 15, an accumulator 19, and a solenoid valve 20.
  • Each indoor unit 3 is provided with, for example, an indoor expansion unit 16, an indoor heat exchanger 17, an indoor blower 18, and an indoor temperature detection unit 7, respectively.
  • the compressor 11, the flow path switching device 12, the outdoor heat exchanger 13, the outdoor expansion unit 15, the plurality of indoor expansion units 16 and the plurality of indoor heat exchangers 17 are connected by a refrigerant pipe 6a to form a refrigerant circuit 6.
  • the flow path switching device 12 and the indoor heat exchanger 17 are connected by a gas pipe 21, and the outdoor expansion portion 15 and the indoor expansion portion 16 are connected by a liquid pipe 22.
  • the compressor 11 sucks in the refrigerant in a low temperature and low pressure state, compresses the sucked refrigerant into a refrigerant in a high temperature and high pressure state, and discharges the refrigerant.
  • the flow path switching device 12 switches the direction in which the refrigerant flows in the refrigerant circuit 6, and is, for example, a four-way valve.
  • the outdoor heat exchanger 13 exchanges heat between, for example, outdoor air and a refrigerant.
  • the outdoor heat exchanger 13 acts as a condenser during the cooling operation and as an evaporator during the heating operation.
  • the outdoor blower 14 is a device that sends outdoor air to the outdoor heat exchanger 13.
  • the outdoor expansion unit 15 is a pressure reducing valve or an expansion valve that decompresses and expands the refrigerant.
  • the outdoor expansion unit 15 is, for example, an electronic expansion valve whose opening degree is adjusted.
  • the accumulator 19 is provided on the suction side of the compressor 11 and stores the liquid-state refrigerant among the refrigerants sucked into the compressor 11 so that only the gas-state refrigerant flows into the compressor 11. be.
  • the solenoid valve 20 eliminates the pressure difference between the discharge side and the suction side when the compressor 11 is stopped, and equalizes the pressure.
  • Each indoor expansion unit 16 is a pressure reducing valve or an expansion valve that decompresses and expands the refrigerant.
  • Each indoor expansion unit 16 is, for example, an electronic expansion valve whose opening degree is adjusted.
  • Each indoor heat exchanger 17 exchanges heat between, for example, indoor air and a refrigerant.
  • Each indoor heat exchanger 17 acts as an evaporator during the cooling operation and as a condenser during the heating operation.
  • Each indoor blower 18 is a device that sends indoor air to the indoor heat exchanger 17.
  • chlorofluorocarbons, alternative chlorofluorocarbons, carbon dioxide and the like are used.
  • Each indoor temperature detection unit 7 is provided at a suction port (not shown) of the indoor unit 3 and detects the indoor temperature of the air-conditioned space.
  • each indoor expansion unit 16 may be provided in the outdoor unit 2.
  • the cooling operation will be described.
  • the refrigerant sucked into the compressor 11 is compressed by the compressor 11 and discharged in a high temperature and high pressure gas state.
  • the high-temperature and high-pressure gas-state refrigerant discharged from the compressor 11 passes through the flow path switching device 12 and flows into the outdoor heat exchanger 13 acting as a condenser, and in the outdoor heat exchanger 13, the outdoor blower It exchanges heat with the outdoor air sent by 14, condenses and liquefies.
  • the condensed liquid refrigerant flows into the outdoor expansion unit 15 and is expanded and depressurized in the outdoor expansion unit 15 to become a low-temperature and low-pressure gas-liquid two-phase state refrigerant.
  • the gas-liquid two-phase state refrigerant flows through the liquid pipe 22 and flows into each of the indoor expansion portions 16.
  • the refrigerant is expanded and depressurized in each indoor expansion unit 16 and flows into each indoor heat exchanger 17 that acts as an evaporator.
  • the refrigerant exchanges heat with the indoor air sent by each indoor blower 18, evaporates and gasifies.
  • the indoor air is cooled, and cooling is performed in each air-conditioned space.
  • the evaporated low-temperature and low-pressure gas-state refrigerant passes through the gas pipe 21 and the flow path switching device 12 and is sucked into the compressor 11.
  • the heating operation In the heating operation, the refrigerant sucked into the compressor 11 is compressed by the compressor 11 and discharged in a high-temperature and high-pressure gas state.
  • the high-temperature and high-pressure gas-state refrigerant discharged from the compressor 11 passes through the flow path switching device 12 and the gas pipe 21 and flows into each indoor heat exchanger 17 acting as a condenser.
  • each indoor heat exchanger 17 the refrigerant exchanges heat with the indoor air sent by each indoor blower 18, condenses and liquefies. At this time, the indoor air is warmed, and heating is performed in each air-conditioned space.
  • the condensed liquid refrigerant passes through the liquid pipe 22 and then flows into the respective indoor expansion portions 16, and is expanded and depressurized in each indoor expansion portion 16 to provide a low-temperature and low-pressure gas-liquid two-phase refrigerant. It becomes.
  • the gas-liquid two-phase state refrigerant flows into the outdoor expansion unit 15, and is expanded and depressurized in the outdoor expansion unit 15.
  • the refrigerant then flows into the outdoor heat exchanger 13 that acts as an evaporator, and in the outdoor heat exchanger 13, heat is exchanged with the outdoor air sent by the outdoor blower 14 to evaporate and gasify.
  • the evaporated low-temperature and low-pressure gas-like refrigerant passes through the flow path switching device 12 and is sucked into the compressor 11.
  • FIG. 3 is a graph illustrating indoor temperature control according to the first embodiment.
  • the horizontal axis represents time and the vertical axis represents the indoor temperature of the air-conditioned space.
  • the temperature control of the air conditioning system 1 is provided with a predetermined upper limit value and lower limit value with respect to the set temperature.
  • the upper limit is 2 ° C higher than the set temperature
  • the lower limit is 2 ° C lower than the set temperature.
  • the control device 4 drives the indoor blower 18 and the refrigerant flows through the indoor heat exchanger 17.
  • This is called a thermoon.
  • the air in the air-conditioned space is heated or cooled, and the room temperature becomes equal to or less than the upper limit value and equal to or more than the lower limit value of the set temperature.
  • the control device 4 stops the indoor blower 18 and the refrigerant flows to the indoor heat exchanger 17. Control so that there is no. This is called thermo-off. At this time, the control device 4 may drive only the indoor blower 18. Further, the control device 4 may open the indoor expansion unit 16 when the thermo is on and close the indoor expansion unit 16 when the thermo is off (see FIG. 5).
  • the time until the room temperature reaches the set temperature is defined as the set temperature arrival time Tset.
  • the set temperature arrival time Tset is the time until the indoor temperature outside the upper limit value returns to the upper limit value, and the time until the room temperature outside the lower limit value returns to the lower limit value. ..
  • the display device 5 is provided in, for example, a management room of a building such as a building, and displays each information of the air conditioning system 1.
  • the display device 5 is, for example, a liquid crystal display, but other devices may also be used. Further, the display device 5 may be provided in a place other than the control room, or may be provided in an air-conditioned space or the like.
  • the control device 4 controls the operations of the outdoor unit 2 and the indoor unit 3, and is a CPU (Central Processing Unit, central processing unit, processing unit, calculation) that executes a program stored in dedicated hardware or a storage device. It is composed of a device, a microprocessor, a microprocessor or a processor).
  • the control device 4 is dedicated hardware, the control device 4 is, for example, a single circuit, a composite circuit, an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a combination thereof. Is applicable.
  • Each of the functional units realized by the control device 4 may be realized by individual hardware, or each functional unit may be realized by one hardware.
  • each function executed by the control device 4 is realized by software, firmware, or a combination of software and firmware.
  • Software and firmware are written as programs.
  • the CPU realizes each function by reading and executing the program. It should be noted that some of the functions of the control device 4 may be realized by dedicated hardware, and some may be realized by software or firmware.
  • FIG. 4 is a functional block diagram showing the control device 4 according to the first embodiment.
  • the control device 4 includes a storage means 31, a determination means 32, a calculation means 33, a writing means 34, and an output means 35.
  • the first embodiment illustrates the case where the control device 4 is connected to the outdoor unit 2, the control device 4 may be provided inside the outdoor unit 2.
  • the storage means 31 stores information required by the air conditioning system 1.
  • the storage means 31 may be configured as a hard disk, or may be configured as a volatile storage means such as a random access memory (RAM) capable of temporarily storing data. Further, the storage means 31 may be configured as a non-volatile storage means such as a flash memory capable of storing data for a long period of time.
  • the storage means 31 is not provided in the control device 4, but may be a memory provided in the indoor unit 3 of the air conditioning system 1, a cloud server on a network outside the control system 1 via a network, or the like. ..
  • the storage means 31 stores the set temperature, the time threshold value, and the temperature threshold value. When the operation of the indoor unit 3 is started, the control device 4 stores the operation start time in the storage means 31.
  • the storage means 31 stores the remote monitoring data of the air conditioning system 1 remotely collected by the control device 4. As remote monitoring data, the temperature and pressure of any place, the operating time of each indoor unit 3, the time when the set temperature is below the upper limit value and above the lower limit value, the set temperature arrival time Tset, the number of thermoons generated or one day The average value of the set temperature arrival time Tset of the above can be mentioned.
  • the determination means 32 determines whether the temperature difference between the indoor temperature detected by the indoor temperature detection unit 7 and the set temperature stored in the storage means 31 is equal to or less than the temperature threshold value stored in the storage means 31. Is.
  • the temperature threshold value is set in advance and is the difference between the upper limit value and the set temperature or the difference between the lower limit value and the set temperature.
  • the calculation means 33 calculates the set temperature arrival time Tset until the room temperature reaches the set temperature based on the room temperature and the set temperature detected by the room temperature detection unit 7. Specifically, the calculation means 33 calculates the set temperature arrival time Tset when the determination means 32 determines that the temperature difference is equal to or less than the temperature threshold value. As described above, the set temperature arrival time Tset is the time until the indoor temperature deviating from the upper limit value or the lower limit value reaches the upper limit value or the lower limit value. When a plurality of indoor units 3 are provided as in the first embodiment, the control device 4 collects the set temperature arrival time Tset of each indoor unit 3.
  • FIG. 5 is a graph showing the operation of the expansion portion during the heating operation according to the first embodiment.
  • the horizontal axis represents time and the vertical axis represents room temperature.
  • the horizontal axis represents time
  • the vertical axis represents the open / close command state of the indoor expansion unit 16.
  • the calculation means 33 calculates the average value of a plurality of set temperature arrival times Tset in one indoor unit 3. First, the heating operation will be described. As shown in FIG. 5, the calculation means 33 calculates Tset1 at the 1st count, Tset2 at the 2nd count, Tset3 at the 3rd count, ... Tsetn at the Nth count.
  • the calculation means 33 adds all of Tset1 to Tsetn and then divides by the count N. As a result, the calculation means 33 calculates the average value.
  • the control device 4 opens the indoor expansion unit 16 when the thermo is on, and closes the indoor expansion unit 16 when the thermo is off.
  • FIG. 6 is a graph showing the operation of the expansion portion during the cooling operation according to the first embodiment.
  • the horizontal axis represents time and the vertical axis represents room temperature.
  • the horizontal axis represents time
  • the vertical axis represents the open / close command state of the indoor expansion unit 16.
  • the calculation means 33 calculates Tset1 at the 1st count, Tset2 at the 2nd count, Tset3 at the 3rd count, ... Tsetn at the Nth count.
  • the calculation means 33 adds all of Tset1 to Tsetn and then divides by the count N. As a result, the calculation means 33 calculates the average value.
  • the control device 4 opens the indoor expansion unit 16 when the thermo is on, and closes the indoor expansion unit 16 when the thermo is off.
  • FIG. 7 is a graph showing a malfunction of the expansion portion during the heating operation according to the first embodiment.
  • the upper figure of FIG. 7 shows the case where the operation of the indoor expansion unit 16 is normal, and the lower figure of FIG. 7 shows the case where the operation of the indoor expansion unit 16 is poor.
  • the horizontal axis represents time and the vertical axis represents room temperature.
  • the horizontal axis indicates time, and the vertical axis indicates the open / close command state of the indoor expansion unit 16.
  • the horizontal axis represents time and the vertical axis represents room temperature.
  • the horizontal axis represents time
  • the vertical axis represents the open / close command state of the indoor expansion unit 16.
  • the control device 4 opens the indoor expansion unit 16 when the thermo is on and closes the indoor expansion unit 16 when the thermo is off.
  • the indoor expansion unit 16 does not operate. It does not react and does not close. Therefore, the refrigerant does not flow through the refrigerant circuit 6, and the indoor unit 3 does not operate for heating. Therefore, the room temperature continues to drop.
  • the writing means 34 writes the indoor unit 3 in the list when the set temperature arrival time Tset calculated by the calculating means 33 exceeds the time threshold value stored in the storage means 31. As shown in FIG. 7, when the indoor expansion unit 16 malfunctions, the indoor temperature continues to decrease, so that the set temperature arrival time Tset becomes long. When the set temperature arrival time Tset exceeds the time threshold value, the writing means 34 writes the indoor unit 3 in the list.
  • the list is an array of indoor units 3 showing signs of malfunction. In the first embodiment, the case where the average value is used as the set temperature arrival time Tset will be illustrated.
  • the output means 35 outputs a list in which the plurality of indoor units 3 are arranged in the order of the set temperature arrival time Tset calculated by the calculation means 33. Specifically, the output means 35 causes the display device 5 to display the list. At this time, the output means 35 may transmit the list to the maintenance service company. As a result, the air conditioning system 1 can appropriately adjust the temperature of each air-conditioned space.
  • the output means 35 may output a list in which a plurality of indoor units 3 are arranged in the order of the set temperature arrival time Tset even if the set temperature arrival time Tset does not exceed the time threshold value. Further, the output means 35 may issue a report when the set temperature arrival time Tset calculated by the calculation means 33 exceeds a preset time threshold value.
  • FIG. 8 is a flowchart showing the operation of the control device 4 according to the first embodiment.
  • the control device 4 first records the operation start time of the indoor unit 3 in the storage means 31 (step ST1).
  • the determination means 32 measures the temperature difference between the indoor temperature and the set temperature detected by the indoor temperature detection unit 7 (step ST2), and determines whether the temperature difference is equal to or less than the temperature threshold value (step ST3). ..
  • the process returns to step ST2.
  • the calculation means 33 calculates the set temperature arrival time Tset (step ST4).
  • the writing means 34 determines whether the calculated set temperature arrival time Tset is larger than the time threshold value (step ST5). When the set temperature arrival time Tset is equal to or less than the time threshold value (NO in step ST5), the process returns to step ST4. On the other hand, when the set temperature arrival time Tset is larger than the time threshold value (YES in step ST5), the writing means 34 writes the indoor unit 3 whose set temperature arrival time Tset is larger than the time threshold value in the list (step ST6).
  • the control device 4 collects the set temperature arrival time Tset of each indoor unit 3 (step ST7).
  • the output means 35 outputs a list of the plurality of indoor units 3 arranged in the order of the set temperature arrival time Tset to the display device 5 (step ST8).
  • the control device 4 transmits the list to the maintenance service company (step ST9).
  • the output means 35 outputs a list in which a plurality of indoor units 3 are arranged in the order of the set temperature arrival time Tset calculated based on the indoor temperature and the set temperature.
  • the set temperature arrival time Tset is information on the air conditioning system of the room temperature and the set temperature.
  • the malfunction of the air conditioning is predicted by using the information of the air conditioning system instead of the external information. Therefore, it is easy to collect the information necessary for predicting the malfunction of the air conditioner.
  • the installation environment of the indoor unit 3 does not change after the indoor unit 3 is installed. Therefore, the set temperature arrival time Tset of the indoor unit 3 placed in the installation environment tends to be substantially constant.
  • a long time for reaching the set temperature Tset means a long time when the space to be air-conditioned is not at the desired environmental temperature. Therefore, if the set temperature arrival time Tset is long, there is a possibility that a complaint from the user will occur.
  • the administrator can prioritize the indoor unit 3 for confirming the situation by referring to the list. Therefore, the manager can check the situation in order from the indoor unit 3 having the highest priority, and can take measures such as repair depending on the situation. Further, when the control device 4 transmits the list to the maintenance service company, the maintenance service company can refer to the list and perform appropriate maintenance on the air conditioning system 1.
  • the output means 35 may issue a report when the set temperature arrival time Tset calculated by the calculation means 33 exceeds a preset time threshold value.
  • the administrator can grasp the indoor unit 3 which has a long set temperature arrival time Tset and is likely to cause a complaint from the user. Therefore, the manager can immediately take measures such as repair.
  • the number of indoor units 3 may be one.
  • the calculation means 33 calculates the ratio of the set temperature arrival time Tset divided by the operating time of the indoor unit 3. Usually, the percentage is 40% or less. That is, when the ratio exceeds 40%, it can be estimated that the air conditioning capacity of the indoor unit 3 is lowered or the air conditioning load is increased.
  • the writing means 34 writes the indoor unit 3 in the list, for example, when the ratio exceeds 40%. As a result, the manager can recognize that the air conditioning capacity of the indoor unit 3 may be lowered or the air conditioning load may be increased.
  • FIG. 9 is a graph showing an average value of the set temperature arrival time Tset according to the second embodiment.
  • the second embodiment is different from the first embodiment in that the output means 35 outputs the average value once a day.
  • the parts common to the first embodiment are designated by the same reference numerals, the description thereof will be omitted, and the differences from the first embodiment will be mainly described.
  • the horizontal axis indicates the date
  • the vertical axis indicates the average value of the set temperature arrival time Tset.
  • the output means 35 outputs the average value of the set temperature arrival time Tset to the display device 5 once a day, and creates a graph as shown in FIG. Then, the output means 35 issues a report when the average value exceeds a predetermined average threshold value.
  • the average value of the set temperature arrival time Tset tends to increase after a certain day, it is highly possible that the indoor unit 3 has malfunctioned after a certain day. In this way, the administrator can immediately grasp the malfunction of the indoor unit 3 by recognizing the time transition of the set temperature arrival time Tset.
  • the control device 4 stores the average value of the set temperature arrival time Tset in the storage means 31 throughout the year.
  • the manager compares the average value of last year's summer with the average value of this year's summer, and if the average value of this year's summer is long, there is a possibility that the air conditioning is performed with the door or window open. Can be grasped.
  • the manager compares the average value of last year's summer with the average value of this year's summer, and if the average value of this year's summer is long, there is a possibility that it is difficult to cool even if it is cooled. You can grasp that there is.
  • the manager can confirm the situation with the maintenance service company and urge the maintenance service company to actively carry out maintenance.
  • FIG. 10 is a graph showing the number of thermoons according to the third embodiment.
  • the third embodiment is different from the first embodiment in that the output means 35 outputs the number of thermoons once a day.
  • the parts common to the first embodiment are designated by the same reference numerals, the description thereof will be omitted, and the differences from the first embodiment will be mainly described.
  • the horizontal axis shows the date and the vertical axis shows the number of thermoons.
  • the output means 35 outputs the number of thermo-ons to the display device 5 once a day, and creates a graph as shown in FIG. Then, the output means 35 issues a report when the number of thermo-ons counted in the preset period falls below the predetermined on-number threshold value. As shown in FIG. 10, when the number of thermo-ons tends to decrease after a certain day, it is highly possible that the indoor unit 3 has malfunctioned after a certain day.
  • thermo-ons are small means that even if the control device 4 instructs the thermo-on when the room temperature deviates from the set temperature, an abnormality occurs in one of the devices of the air conditioning system 1 and it is probable that the thermo-on is not performed. It can be expensive. In this way, the administrator can immediately grasp the malfunction of the indoor unit 3 by recognizing the time transition of the number of thermo-ons.
  • FIG. 11 is a graph showing the number of operations of the indoor unit 3 according to the fourth embodiment.
  • the fourth embodiment is different from the first embodiment in that the output means 35 outputs the number of operations of the indoor unit 3 once a day.
  • the parts common to the first embodiment are designated by the same reference numerals, the description thereof will be omitted, and the differences from the first embodiment will be mainly described.
  • the horizontal axis indicates the date, and the vertical axis indicates the number of times the indoor unit 3 has been operated.
  • the output means 35 outputs the number of operations of the indoor unit 3 to the display device 5 once a day, and creates a graph as shown in FIG. Then, the output means 35 issues a report when the set temperature arrival time Tset exceeds the time threshold value and the number of operations of the indoor unit 3 falls below the predetermined number of times of operation threshold value. As shown in FIG. 11, when the number of operations of the indoor unit 3 tends to decrease after a certain day, it is highly possible that the indoor unit 3 has malfunctioned after a certain day.
  • the set temperature arrival time Tset is within 30 minutes, and the indoor expansion unit 16 provided in the indoor unit 3 operates 5 times or more per day. be.
  • the set temperature arrival time Tset is extended and the number of operations of the indoor expansion unit 16 is also reduced.
  • the administrator can immediately grasp the malfunction of the indoor unit 3 by recognizing the set temperature arrival time Tset and the number of operations of the indoor unit 3.
  • Air conditioning system 2 Outdoor unit, 3 Indoor unit, 4 Control device, 5 Display device, 6 Refrigerant circuit, 6a Refrigerant piping, 7 Indoor temperature detector, 11 Compressor, 12 Flow path switching device, 13 Outdoor heat exchanger , 14 outdoor blower, 15 outdoor expansion part, 16 indoor expansion part, 17 indoor heat exchanger, 18 indoor blower, 19 accumulator, 20 electromagnetic valve, 21 gas pipe, 22 liquid pipe, 31 storage means, 32 judgment means, 33 calculation Means, 34 writing means, 35 output means.

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  • Combustion & Propulsion (AREA)
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  • General Engineering & Computer Science (AREA)
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  • Air Conditioning Control Device (AREA)

Abstract

This air conditioning system includes: an outdoor unit provided outdoors; a plurality of indoor units that are connected to the outdoor unit and that each adjust air in a plurality of spaces that are objects of air conditioning, to be set temperatures that have been set; a room temperature detecting unit that detects room temperatures in the spaces that are the objects of air conditioning; and a control device that controls operations of the outdoor unit and the indoor units. The control device has calculating means that calculates set-temperature-attaining time till the room temperature attains the set temperature, on the basis of room temperature detected by the room temperature detecting unit and the set temperature, and output means that outputs a list of a plurality of indoor units listed in order of the set-temperature-attaining time calculated by the calculating means.

Description

空気調和システムAir conditioning system
　本開示は、制御装置を備える空気調和システムに関する。 The present disclosure relates to an air conditioning system including a control device.
　従来、制御装置を備える空気調和システムが知られている。空気調和システムにおいて、冷房時に室内が適切に冷却されない不冷状態が発生したり、暖房時に室内が適切に加熱されない不暖状態が発生したりして、利用者からクレームが寄せられる場合がある。特許文献１には、利用者からのクレームと、地域の予想温度とに基づいて、クレームが発生し易い時間帯を特定しようとする空調制御支援装置が開示されている。具体的には、特許文献１は、１日のうち空調が不調となって利用者からクレームが発生し易い時間帯を、過去のクレーム履歴と、室外温度と、設定温度と、天気予報とを用いて予測する。予測結果は、室内を適切な温度に調整するための制御情報として利用される。 Conventionally, an air conditioning system equipped with a control device is known. In an air conditioning system, a user may complain because an uncooled state occurs in which the room is not properly cooled during cooling, or an unheated state occurs in which the room is not properly heated during heating. Patent Document 1 discloses an air-conditioning control support device that attempts to identify a time zone in which a complaint is likely to occur based on a complaint from a user and an expected temperature in a region. Specifically, Patent Document 1 describes the time zone during which air conditioning is malfunctioning and users are likely to make complaints, such as past complaint history, outdoor temperature, set temperature, and weather forecast. Use to predict. The prediction result is used as control information for adjusting the indoor temperature to an appropriate temperature.
特開２０１７－８９９６７号公報Japanese Unexamined Patent Publication No. 2017-89967
　しかしながら、特許文献１に開示された空調制御支援装置は、過去のクレーム履歴及び天気予報といった空調系統とは異なる外部情報を用いて空調の不調を予測し、予測結果を制御情報として利用している。即ち、特許文献１は、空調の不調を予測するために必要な情報の収集が煩雑である。 However, the air conditioning control support device disclosed in Patent Document 1 predicts an air conditioning malfunction by using external information different from the air conditioning system such as past claim history and weather forecast, and uses the prediction result as control information. .. That is, in Patent Document 1, it is complicated to collect information necessary for predicting a malfunction of air conditioning.
　本開示は、上記のような課題を解決するためになされたもので、空調の不調を予測するために必要な情報の収集が簡便な空気調和システムを提供するものである。 This disclosure is made to solve the above-mentioned problems, and provides an air conditioning system that makes it easy to collect information necessary for predicting an air conditioning malfunction.
　本開示に係る空気調和システムは、室外に設けられる室外機と、室外機に接続され、複数の空調対象空間の空気を、設定された設定温度になるようにそれぞれ調整する複数の室内機と、空調対象空間の室内温度を検出する室内温度検出部と、室外機及び室内機の動作を制御する制御装置と、を備え、制御装置は、室内温度検出部によって検出された室内温度と設定温度とに基づいて、室内温度が設定温度に到達するまでの設定温度到達時間を算出する算出手段と、複数の室内機を、算出手段によって算出された設定温度到達時間の順に並べたリストを出力する出力手段と、を有する。 The air conditioning system according to the present disclosure includes an outdoor unit provided outdoors, a plurality of indoor units connected to the outdoor unit, and a plurality of indoor units connected to the outdoor unit to adjust the air in a plurality of air-conditioned spaces so as to reach a set set temperature. It includes an indoor temperature detector that detects the indoor temperature of the air-conditioned space and a control device that controls the operation of the outdoor unit and the indoor unit. The control device includes the indoor temperature and the set temperature detected by the indoor temperature detector. Outputs a calculation means that calculates the set temperature arrival time until the room temperature reaches the set temperature, and a list of a plurality of indoor units arranged in the order of the set temperature arrival time calculated by the calculation means. Means and.
　本開示によれば、出力手段は、複数の室内機を、室内温度と設定温度とに基づいて算出された設定温度到達時間の順に並べたリストを出力する。ここで、設定温度到達時間は、室内温度と設定温度という空調系統の情報である。このように、本開示は、外部情報ではなく空調系統の情報を用いて、空調の不調を予測する。従って、空調の不調を予測するために必要な情報の収集が簡便である。 According to the present disclosure, the output means outputs a list in which a plurality of indoor units are arranged in the order of the set temperature arrival time calculated based on the indoor temperature and the set temperature. Here, the set temperature arrival time is information on the air conditioning system, that is, the room temperature and the set temperature. As described above, the present disclosure predicts the malfunction of air conditioning by using the information of the air conditioning system instead of the external information. Therefore, it is easy to collect the information necessary for predicting the malfunction of the air conditioner.
実施の形態１に係る空気調和システムを示す模式図である。It is a schematic diagram which shows the air-conditioning system which concerns on Embodiment 1. FIG. 実施の形態１に係る空気調和システムを示す回路図である。It is a circuit diagram which shows the air-conditioning system which concerns on Embodiment 1. FIG. 実施の形態１に係る室内温度制御について説明するグラフである。It is a graph explaining the room temperature control which concerns on Embodiment 1. FIG. 実施の形態１に係る制御装置を示す機能ブロック図である。It is a functional block diagram which shows the control device which concerns on Embodiment 1. FIG. 実施の形態１に係る暖房運転時の膨張部の動作を示すグラフである。It is a graph which shows the operation of the expansion part at the time of a heating operation which concerns on Embodiment 1. FIG. 実施の形態１に係る冷房運転時の膨張部の動作を示すグラフである。It is a graph which shows the operation of the expansion part at the time of a cooling operation which concerns on Embodiment 1. FIG. 実施の形態１に係る暖房運転時の膨張部の動作不良を示すグラフである。It is a graph which shows the malfunction of the expansion part at the time of a heating operation which concerns on Embodiment 1. FIG. 実施の形態１に係る制御装置の動作を示すフローチャートである。It is a flowchart which shows the operation of the control device which concerns on Embodiment 1. FIG. 実施の形態２に係る設定温度到達時間の平均値を示すグラフである。It is a graph which shows the average value of the set temperature arrival time which concerns on Embodiment 2. 実施の形態３に係るサーモオンの回数を示すグラフである。It is a graph which shows the number of times of the thermoon which concerns on Embodiment 3. 実施の形態４に係る室内機の運転回数を示すグラフである。It is a graph which shows the number of times of operation of the indoor unit which concerns on Embodiment 4.
　以下、本開示の空気調和システムの実施の形態について、図面を参照しながら説明する。なお、本開示は、以下に説明する実施の形態によって限定されるものではない。また、図１を含め、以下の図面では各構成部材の大きさの関係が実際のものとは異なる場合がある。また、以下の開示において、本開示の理解を容易にするために方向を表す用語を適宜用いるが、これは本開示を説明するためのものであって、これらの用語は本開示を限定するものではない。方向を表す用語としては、例えば、「上」、「下」、「右」、「左」、「前」又は「後」等が挙げられる。 Hereinafter, embodiments of the air conditioning system of the present disclosure will be described with reference to the drawings. The present disclosure is not limited to the embodiments described below. Further, in the following drawings including FIG. 1, the relationship between the sizes of the constituent members may differ from the actual one. Also, in the following disclosures, directional terms will be used as appropriate to facilitate understanding of the present disclosure, but these terms are for the purpose of explaining the present disclosure and limit the present disclosure. is not it. Examples of the term indicating the direction include "top", "bottom", "right", "left", "front", "rear", and the like.
実施の形態１．
　図１は、実施の形態１に係る空気調和システム１を示す模式図である。図１に示すように、空気調和システム１は、室外機２と、複数の室内機３と、表示装置５と、制御装置４とを備えている。室外機２は、室外に設けられるものである。複数の室内機３は、室外機２に接続され、複数の空調対象空間の空気を、設定された設定温度になるようにそれぞれ調整する。本実施の形態１では、室外機２が１台である場合について例示しているが、室外機２は複数台であってもよい。また、本実施の形態１では、室内機３が４台である場合について例示しているが、室内機３は１台～３台であってもよく、５台以上であってもよい。 Embodiment 1.
FIG. 1 is a schematic view showing an air conditioning system 1 according to the first embodiment. As shown in FIG. 1, the air conditioning system 1 includes an outdoor unit 2, a plurality of indoor units 3, a display device 5, and a control device 4. The outdoor unit 2 is provided outdoors. The plurality of indoor units 3 are connected to the outdoor unit 2 and adjust the air in the plurality of air-conditioned spaces so as to reach a set set temperature. In the first embodiment, the case where the number of outdoor units 2 is one is illustrated, but the number of outdoor units 2 may be a plurality of units. Further, in the first embodiment, the case where the number of indoor units 3 is four is illustrated, but the number of indoor units 3 may be one to three or five or more.
　図２は、実施の形態１に係る空気調和システム１を示す回路図である。図２に示すように、室外機２には、例えば圧縮機１１、流路切替装置１２、室外熱交換器１３、室外送風機１４、室外膨張部１５、アキュムレータ１９及び電磁弁２０が設けられている。各室内機３には、例えばそれぞれ室内膨張部１６、室内熱交換器１７、室内送風機１８及び室内温度検出部７が設けられている。 FIG. 2 is a circuit diagram showing an air conditioning system 1 according to the first embodiment. As shown in FIG. 2, the outdoor unit 2 is provided with, for example, a compressor 11, a flow path switching device 12, an outdoor heat exchanger 13, an outdoor blower 14, an outdoor expansion unit 15, an accumulator 19, and a solenoid valve 20. .. Each indoor unit 3 is provided with, for example, an indoor expansion unit 16, an indoor heat exchanger 17, an indoor blower 18, and an indoor temperature detection unit 7, respectively.
　圧縮機１１、流路切替装置１２、室外熱交換器１３、室外膨張部１５、複数の室内膨張部１６及び複数の室内熱交換器１７が冷媒配管６ａにより接続されて冷媒回路６が構成されている。ここで、流路切替装置１２と室内熱交換器１７とはガス管２１によって接続されており、室外膨張部１５と室内膨張部１６とは液管２２によって接続されている。 The compressor 11, the flow path switching device 12, the outdoor heat exchanger 13, the outdoor expansion unit 15, the plurality of indoor expansion units 16 and the plurality of indoor heat exchangers 17 are connected by a refrigerant pipe 6a to form a refrigerant circuit 6. There is. Here, the flow path switching device 12 and the indoor heat exchanger 17 are connected by a gas pipe 21, and the outdoor expansion portion 15 and the indoor expansion portion 16 are connected by a liquid pipe 22.
　圧縮機１１は、低温且つ低圧の状態の冷媒を吸入し、吸入した冷媒を圧縮して高温且つ高圧の状態の冷媒にして吐出するものである。流路切替装置１２は、冷媒回路６において冷媒が流れる方向を切り替えるものであり、例えば四方弁である。室外熱交換器１３は、例えば室外空気と冷媒との間で熱交換するものである。室外熱交換器１３は、冷房運転時には凝縮器として作用し、暖房運転時には蒸発器として作用する。室外送風機１４は、室外熱交換器１３に室外空気を送る機器である。 The compressor 11 sucks in the refrigerant in a low temperature and low pressure state, compresses the sucked refrigerant into a refrigerant in a high temperature and high pressure state, and discharges the refrigerant. The flow path switching device 12 switches the direction in which the refrigerant flows in the refrigerant circuit 6, and is, for example, a four-way valve. The outdoor heat exchanger 13 exchanges heat between, for example, outdoor air and a refrigerant. The outdoor heat exchanger 13 acts as a condenser during the cooling operation and as an evaporator during the heating operation. The outdoor blower 14 is a device that sends outdoor air to the outdoor heat exchanger 13.
　室外膨張部１５は、冷媒を減圧して膨張する減圧弁又は膨張弁である。室外膨張部１５は、例えば開度が調整される電子式膨張弁である。アキュムレータ１９は、圧縮機１１の吸入側に設けられており、ガス状態の冷媒のみが圧縮機１１に流入するように、圧縮機１１に吸入される冷媒のうち液状態の冷媒を貯留するものである。電磁弁２０は、圧縮機１１が停止した場合等に吐出側と吸入側との圧力差をなくして均圧化するものである。 The outdoor expansion unit 15 is a pressure reducing valve or an expansion valve that decompresses and expands the refrigerant. The outdoor expansion unit 15 is, for example, an electronic expansion valve whose opening degree is adjusted. The accumulator 19 is provided on the suction side of the compressor 11 and stores the liquid-state refrigerant among the refrigerants sucked into the compressor 11 so that only the gas-state refrigerant flows into the compressor 11. be. The solenoid valve 20 eliminates the pressure difference between the discharge side and the suction side when the compressor 11 is stopped, and equalizes the pressure.
　それぞれの室内膨張部１６は、冷媒を減圧して膨張する減圧弁又は膨張弁である。それぞれの室内膨張部１６は、例えば開度が調整される電子式膨張弁である。それぞれの室内熱交換器１７は、例えば室内空気と冷媒との間で熱交換するものである。それぞれの室内熱交換器１７は、冷房運転時には蒸発器として作用し、暖房運転時には凝縮器として作用する。それぞれの室内送風機１８は、室内熱交換器１７に室内空気を送る機器である。なお、冷媒は、フロン、代替フロン又は二酸化炭素等が用いられる。それぞれの室内温度検出部７は、室内機３の吸込口（図示せず）に設けられ、空調対象空間の室内温度を検出するものである。 Each indoor expansion unit 16 is a pressure reducing valve or an expansion valve that decompresses and expands the refrigerant. Each indoor expansion unit 16 is, for example, an electronic expansion valve whose opening degree is adjusted. Each indoor heat exchanger 17 exchanges heat between, for example, indoor air and a refrigerant. Each indoor heat exchanger 17 acts as an evaporator during the cooling operation and as a condenser during the heating operation. Each indoor blower 18 is a device that sends indoor air to the indoor heat exchanger 17. As the refrigerant, chlorofluorocarbons, alternative chlorofluorocarbons, carbon dioxide and the like are used. Each indoor temperature detection unit 7 is provided at a suction port (not shown) of the indoor unit 3 and detects the indoor temperature of the air-conditioned space.
　なお、本実施の形態１では、各室内機３に室内膨張部１６が設けられた上で、室外機２に室外膨張部１５が設けられている場合について例示しているが、室外膨張部１５が省略されてもよい。この場合、各室内膨張部１６は、室外機２に設けられてもよい。 In the first embodiment, the case where the indoor expansion unit 16 is provided in each indoor unit 3 and the outdoor expansion unit 15 is provided in the outdoor unit 2 is illustrated, but the outdoor expansion unit 15 is illustrated. May be omitted. In this case, each indoor expansion unit 16 may be provided in the outdoor unit 2.
　（運転モード、冷房運転）
　次に、空気調和システム１の運転モードについて説明する。先ず、冷房運転について説明する。冷房運転において、圧縮機１１に吸入された冷媒は、圧縮機１１によって圧縮されて高温且つ高圧のガス状態で吐出する。圧縮機１１から吐出された高温且つ高圧のガス状態の冷媒は、流路切替装置１２を通過して、凝縮器として作用する室外熱交換器１３に流入し、室外熱交換器１３において、室外送風機１４によって送られる室外空気と熱交換されて凝縮して液化する。凝縮された液状態の冷媒は、室外膨張部１５に流入し、室外膨張部１５において膨張及び減圧されて低温且つ低圧の気液二相状態の冷媒となる。 (Operation mode, cooling operation)
Next, the operation mode of the air conditioning system 1 will be described. First, the cooling operation will be described. In the cooling operation, the refrigerant sucked into the compressor 11 is compressed by the compressor 11 and discharged in a high temperature and high pressure gas state. The high-temperature and high-pressure gas-state refrigerant discharged from the compressor 11 passes through the flow path switching device 12 and flows into the outdoor heat exchanger 13 acting as a condenser, and in the outdoor heat exchanger 13, the outdoor blower It exchanges heat with the outdoor air sent by 14, condenses and liquefies. The condensed liquid refrigerant flows into the outdoor expansion unit 15 and is expanded and depressurized in the outdoor expansion unit 15 to become a low-temperature and low-pressure gas-liquid two-phase state refrigerant.
　そして、気液二相状態の冷媒は、液管２２を流れてそれぞれの室内膨張部１６に流入する。冷媒は、それぞれの室内膨張部１６において膨張及び減圧されて、蒸発器として作用するそれぞれの室内熱交換器１７に流入する。冷媒は、それぞれの室内熱交換器１７において、それぞれの室内送風機１８によって送られる室内空気と熱交換されて蒸発してガス化する。このとき、室内空気が冷やされ、各空調対象空間において冷房が実施される。蒸発した低温且つ低圧のガス状態の冷媒は、ガス管２１及び流路切替装置１２を通過して、圧縮機１１に吸入される。 Then, the gas-liquid two-phase state refrigerant flows through the liquid pipe 22 and flows into each of the indoor expansion portions 16. The refrigerant is expanded and depressurized in each indoor expansion unit 16 and flows into each indoor heat exchanger 17 that acts as an evaporator. In each indoor heat exchanger 17, the refrigerant exchanges heat with the indoor air sent by each indoor blower 18, evaporates and gasifies. At this time, the indoor air is cooled, and cooling is performed in each air-conditioned space. The evaporated low-temperature and low-pressure gas-state refrigerant passes through the gas pipe 21 and the flow path switching device 12 and is sucked into the compressor 11.
　（運転モード、暖房運転）
　次に、暖房運転について説明する。暖房運転において、圧縮機１１に吸入された冷媒は、圧縮機１１によって圧縮されて高温且つ高圧のガス状態で吐出する。圧縮機１１から吐出された高温且つ高圧のガス状態の冷媒は、流路切替装置１２及びガス管２１を通過して、凝縮器として作用するそれぞれの室内熱交換器１７に流入する。冷媒は、それぞれの室内熱交換器１７において、それぞれの室内送風機１８によって送られる室内空気と熱交換されて凝縮して液化する。このとき、室内空気が暖められ、各空調対象空間において暖房が実施される。凝縮された液状態の冷媒は、液管２２をとおったのち、それぞれの室内膨張部１６に流入し、それぞれの室内膨張部１６において膨張及び減圧されて低温且つ低圧の気液二相状態の冷媒となる。 (Operation mode, heating operation)
Next, the heating operation will be described. In the heating operation, the refrigerant sucked into the compressor 11 is compressed by the compressor 11 and discharged in a high-temperature and high-pressure gas state. The high-temperature and high-pressure gas-state refrigerant discharged from the compressor 11 passes through the flow path switching device 12 and the gas pipe 21 and flows into each indoor heat exchanger 17 acting as a condenser. In each indoor heat exchanger 17, the refrigerant exchanges heat with the indoor air sent by each indoor blower 18, condenses and liquefies. At this time, the indoor air is warmed, and heating is performed in each air-conditioned space. The condensed liquid refrigerant passes through the liquid pipe 22 and then flows into the respective indoor expansion portions 16, and is expanded and depressurized in each indoor expansion portion 16 to provide a low-temperature and low-pressure gas-liquid two-phase refrigerant. It becomes.
　そして、気液二相状態の冷媒は、室外膨張部１５に流入し、室外膨張部１５において膨張及び減圧される。冷媒は、その後、蒸発器として作用する室外熱交換器１３に流入し、室外熱交換器１３において、室外送風機１４によって送られる室外空気と熱交換されて蒸発してガス化する。蒸発した低温且つ低圧のガス状態の冷媒は、流路切替装置１２を通過して、圧縮機１１に吸入される。 Then, the gas-liquid two-phase state refrigerant flows into the outdoor expansion unit 15, and is expanded and depressurized in the outdoor expansion unit 15. The refrigerant then flows into the outdoor heat exchanger 13 that acts as an evaporator, and in the outdoor heat exchanger 13, heat is exchanged with the outdoor air sent by the outdoor blower 14 to evaporate and gasify. The evaporated low-temperature and low-pressure gas-like refrigerant passes through the flow path switching device 12 and is sucked into the compressor 11.
　図３は、実施の形態１に係る室内温度制御について説明するグラフである。図３において、横軸は時間を示し、縦軸は空調対象空間の室内温度を示す。図３に示すように、空気調和システム１の温度制御は、設定温度に対して所定の上限値及び下限値が設けられている。例えば、上限値は設定温度より２℃高く、下限値は設定温度より２℃低い。室内機３に吸い込まれる空気の温度である室内温度が、上限値より高いか又は下限値より低いとき、制御装置４は、室内送風機１８を駆動し、且つ、室内熱交換器１７に冷媒が流れるように制御する。これをサーモオンと呼称する。これにより、空調対象空間の空気を加熱又は冷却して、室内温度が設定温度の上限値以下且つ下限値以上となる。 FIG. 3 is a graph illustrating indoor temperature control according to the first embodiment. In FIG. 3, the horizontal axis represents time and the vertical axis represents the indoor temperature of the air-conditioned space. As shown in FIG. 3, the temperature control of the air conditioning system 1 is provided with a predetermined upper limit value and lower limit value with respect to the set temperature. For example, the upper limit is 2 ° C higher than the set temperature, and the lower limit is 2 ° C lower than the set temperature. When the indoor temperature, which is the temperature of the air sucked into the indoor unit 3, is higher than the upper limit value or lower than the lower limit value, the control device 4 drives the indoor blower 18 and the refrigerant flows through the indoor heat exchanger 17. To control. This is called a thermoon. As a result, the air in the air-conditioned space is heated or cooled, and the room temperature becomes equal to or less than the upper limit value and equal to or more than the lower limit value of the set temperature.
　一方、室内機３に吸い込まれる空気の温度である室内温度が、上限値以下且つ下限値以上のとき、制御装置４は、室内送風機１８を停止し、且つ、室内熱交換器１７に冷媒が流れないように制御する。これをサーモオフと呼称する。このとき、制御装置４は、室内送風機１８のみを駆動してもよい。また、制御装置４は、サーモオンのとき室内膨張部１６を開き、サーモオフのとき室内膨張部１６を閉じてもよい（図５参照）。ここで、室内温度が設定温度に到達するまでの時間を設定温度到達時間Ｔｓｅｔとする。なお、具体的には、設定温度到達時間Ｔｓｅｔは、上限値から外れた室内温度が上限値に戻るまでの時間であり、下限値から外れた室内温度が、下限値に戻るまでの時間である。 On the other hand, when the indoor temperature, which is the temperature of the air sucked into the indoor unit 3, is equal to or lower than the upper limit value and equal to or higher than the lower limit value, the control device 4 stops the indoor blower 18 and the refrigerant flows to the indoor heat exchanger 17. Control so that there is no. This is called thermo-off. At this time, the control device 4 may drive only the indoor blower 18. Further, the control device 4 may open the indoor expansion unit 16 when the thermo is on and close the indoor expansion unit 16 when the thermo is off (see FIG. 5). Here, the time until the room temperature reaches the set temperature is defined as the set temperature arrival time Tset. Specifically, the set temperature arrival time Tset is the time until the indoor temperature outside the upper limit value returns to the upper limit value, and the time until the room temperature outside the lower limit value returns to the lower limit value. ..
　（表示装置５）
　表示装置５は、例えばビル等の建物の管理室等に設けられており、空気調和システム１の各情報を表示するものである。表示装置５は、例えば液晶ディスプレイであるが、そのほかのものでもよい。また、表示装置５は、管理室ではなく別の場所に設けられてもよく、空調対象空間等に設けられてもよい。 (Display device 5)
The display device 5 is provided in, for example, a management room of a building such as a building, and displays each information of the air conditioning system 1. The display device 5 is, for example, a liquid crystal display, but other devices may also be used. Further, the display device 5 may be provided in a place other than the control room, or may be provided in an air-conditioned space or the like.
　（制御装置４）
　制御装置４は、室外機２及び室内機３の動作を制御するものであり、専用のハードウェア又は記憶装置に格納されるプログラムを実行するＣＰＵ（Ｃｅｎｔｒａｌ　Ｐｒｏｃｅｓｓｉｎｇ　Ｕｎｉｔ、中央処理装置、処理装置、演算装置、マイクロプロセッサ、マイクロコンピュータ又はプロセッサともいう）で構成される。制御装置４が専用のハードウェアである場合、制御装置４は、例えば、単一回路、複合回路、ＡＳＩＣ（Ａｐｐｌｉｃａｔｉｏｎ　Ｓｐｅｃｉｆｉｃ　Ｉｎｔｅｇｒａｔｅｄ　Ｃｉｒｃｕｉｔ）、ＦＰＧＡ（Ｆｉｅｌｄ－Ｐｒｏｇｒａｍｍａｂｌｅ　Ｇａｔｅ　Ａｒｒａｙ）、又は、これらを組み合わせたものが該当する。制御装置４が実現する各機能部のそれぞれを、個別のハードウェアで実現してもよいし、各機能部を一つのハードウェアで実現してもよい。 (Control device 4)
The control device 4 controls the operations of the outdoor unit 2 and the indoor unit 3, and is a CPU (Central Processing Unit, central processing unit, processing unit, calculation) that executes a program stored in dedicated hardware or a storage device. It is composed of a device, a microprocessor, a microprocessor or a processor). When the control device 4 is dedicated hardware, the control device 4 is, for example, a single circuit, a composite circuit, an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a combination thereof. Is applicable. Each of the functional units realized by the control device 4 may be realized by individual hardware, or each functional unit may be realized by one hardware.
　制御装置４がＣＰＵの場合、制御装置４が実行する各機能は、ソフトウェア、ファームウェア、又はソフトウェアとファームウェアとの組み合わせにより実現される。ソフトウェア及びファームウェアはプログラムとして記述される。ＣＰＵは、プログラムを読み出して実行することにより、各機能を実現する。なお、制御装置４の機能の一部を専用のハードウェアで実現し、一部をソフトウェア又はファームウェアで実現するようにしてもよい。 When the control device 4 is a CPU, each function executed by the control device 4 is realized by software, firmware, or a combination of software and firmware. Software and firmware are written as programs. The CPU realizes each function by reading and executing the program. It should be noted that some of the functions of the control device 4 may be realized by dedicated hardware, and some may be realized by software or firmware.
　図４は、実施の形態１に係る制御装置４を示す機能ブロック図である。図４に示すように、制御装置４は、記憶手段３１と、判定手段３２と、算出手段３３と、書込手段３４と、出力手段３５とを有している。なお、本実施の形態１は、制御装置４が室外機２に接続されている場合について例示しているが、制御装置４は室外機２内に設けられてもよい。 FIG. 4 is a functional block diagram showing the control device 4 according to the first embodiment. As shown in FIG. 4, the control device 4 includes a storage means 31, a determination means 32, a calculation means 33, a writing means 34, and an output means 35. Although the first embodiment illustrates the case where the control device 4 is connected to the outdoor unit 2, the control device 4 may be provided inside the outdoor unit 2.
　（記憶手段３１）
　記憶手段３１は、空気調和システム１が必要とする情報を記憶するものである。記憶手段３１は、ハードディスクとして構成されてもよいし、データを一時的に記憶することができるランダムアクセスメモリ（ＲＡＭ）等の揮発性記憶手段として構成されてもよい。また、記憶手段３１は、データを長期的に記憶することができるフラッシュメモリ等の不揮発性記憶手段として構成されてもよい。なお、記憶手段３１は、制御装置４が備えるものではなく、空気調和システム１の室内機３に設けられたメモリでもよいし、ネットワークを介して制御システム１外部のネットワーク上のクラウドサーバ等でもよい。記憶手段３１は、設定温度と、時間閾値と、温度閾値とを記憶している。なお、制御装置４は、室内機３の運転が開始された際、運転開始時刻を記憶手段３１に記憶する。 (Memory means 31)
The storage means 31 stores information required by the air conditioning system 1. The storage means 31 may be configured as a hard disk, or may be configured as a volatile storage means such as a random access memory (RAM) capable of temporarily storing data. Further, the storage means 31 may be configured as a non-volatile storage means such as a flash memory capable of storing data for a long period of time. The storage means 31 is not provided in the control device 4, but may be a memory provided in the indoor unit 3 of the air conditioning system 1, a cloud server on a network outside the control system 1 via a network, or the like. .. The storage means 31 stores the set temperature, the time threshold value, and the temperature threshold value. When the operation of the indoor unit 3 is started, the control device 4 stores the operation start time in the storage means 31.
　記憶手段３１は、制御装置４によって遠隔収集された空気調和システム１の遠隔監視データを記憶する。遠隔監視データとして、任意の場所の温度、圧力、各室内機３の運転時間、設定温度が上限値以下及び下限値以上であるときの時間、設定温度到達時間Ｔｓｅｔ、サーモオンの発生回数又は１日の設定温度到達時間Ｔｓｅｔの平均値等が挙げられる。 The storage means 31 stores the remote monitoring data of the air conditioning system 1 remotely collected by the control device 4. As remote monitoring data, the temperature and pressure of any place, the operating time of each indoor unit 3, the time when the set temperature is below the upper limit value and above the lower limit value, the set temperature arrival time Tset, the number of thermoons generated or one day The average value of the set temperature arrival time Tset of the above can be mentioned.
　（判定手段３２）
　判定手段３２は、室内温度検出部７によって検出された室内温度と、記憶手段３１に記憶された設定温度との温度差が、記憶手段３１に記憶された温度閾値以下であるかを判定するものである。ここで、温度閾値は、予め設定されたものであり、上限値と設定温度との差、又は下限値と設定温度との差である。 (Determining means 32)
The determination means 32 determines whether the temperature difference between the indoor temperature detected by the indoor temperature detection unit 7 and the set temperature stored in the storage means 31 is equal to or less than the temperature threshold value stored in the storage means 31. Is. Here, the temperature threshold value is set in advance and is the difference between the upper limit value and the set temperature or the difference between the lower limit value and the set temperature.
　（算出手段３３）
　算出手段３３は、室内温度検出部７によって検出された室内温度と設定温度とに基づいて、室内温度が設定温度に到達するまでの設定温度到達時間Ｔｓｅｔを算出するものである。具体的には、算出手段３３は、判定手段３２によって温度差が温度閾値以下であると判定された場合、設定温度到達時間Ｔｓｅｔを算出する。設定温度到達時間Ｔｓｅｔは、前述の如く、上限値又は下限値から外れた室内温度が上限値又は下限値に到達するまでの時間である。本実施の形態１のように複数の室内機３が設けられている場合、制御装置４は、各室内機３の設定温度到達時間Ｔｓｅｔを収集する。 (Calculation means 33)
The calculation means 33 calculates the set temperature arrival time Tset until the room temperature reaches the set temperature based on the room temperature and the set temperature detected by the room temperature detection unit 7. Specifically, the calculation means 33 calculates the set temperature arrival time Tset when the determination means 32 determines that the temperature difference is equal to or less than the temperature threshold value. As described above, the set temperature arrival time Tset is the time until the indoor temperature deviating from the upper limit value or the lower limit value reaches the upper limit value or the lower limit value. When a plurality of indoor units 3 are provided as in the first embodiment, the control device 4 collects the set temperature arrival time Tset of each indoor unit 3.
　図５は、実施の形態１に係る暖房運転時の膨張部の動作を示すグラフである。図５の上図において、横軸は時間を示し、縦軸は室内温度を示す。図５の下部において、横軸は時間を示し、縦軸は室内膨張部１６の開閉指令状態を示す。算出手段３３は、１台の室内機３における複数の設定温度到達時間Ｔｓｅｔの平均値を算出する。先ず、暖房運転について説明する。図５に示すように、算出手段３３は、１カウント目のＴｓｅｔ１、２カウント目のＴｓｅｔ２、３カウント目のＴｓｅｔ３、・・・Ｎカウント目のＴｓｅｔｎを算出する。算出手段３３は、Ｔｓｅｔ１からＴｓｅｔｎまでを全て加算した上で、カウントＮで除算する。これにより、算出手段３３は、平均値を算出する。制御装置４は、サーモオンのとき室内膨張部１６を開き、サーモオフのとき室内膨張部１６を閉じる。 FIG. 5 is a graph showing the operation of the expansion portion during the heating operation according to the first embodiment. In the upper view of FIG. 5, the horizontal axis represents time and the vertical axis represents room temperature. In the lower part of FIG. 5, the horizontal axis represents time, and the vertical axis represents the open / close command state of the indoor expansion unit 16. The calculation means 33 calculates the average value of a plurality of set temperature arrival times Tset in one indoor unit 3. First, the heating operation will be described. As shown in FIG. 5, the calculation means 33 calculates Tset1 at the 1st count, Tset2 at the 2nd count, Tset3 at the 3rd count, ... Tsetn at the Nth count. The calculation means 33 adds all of Tset1 to Tsetn and then divides by the count N. As a result, the calculation means 33 calculates the average value. The control device 4 opens the indoor expansion unit 16 when the thermo is on, and closes the indoor expansion unit 16 when the thermo is off.
　図６は、実施の形態１に係る冷房運転時の膨張部の動作を示すグラフである。図６の上図において、横軸は時間を示し、縦軸は室内温度を示す。図６の下部において、横軸は時間を示し、縦軸は室内膨張部１６の開閉指令状態を示す。次に、冷房運転について説明する。図６に示すように、算出手段３３は、１カウント目のＴｓｅｔ１、２カウント目のＴｓｅｔ２、３カウント目のＴｓｅｔ３、・・・Ｎカウント目のＴｓｅｔｎを算出する。算出手段３３は、Ｔｓｅｔ１からＴｓｅｔｎまでを全て加算した上で、カウントＮで除算する。これにより、算出手段３３は、平均値を算出する。制御装置４は、サーモオンのとき室内膨張部１６を開き、サーモオフのとき室内膨張部１６を閉じる。 FIG. 6 is a graph showing the operation of the expansion portion during the cooling operation according to the first embodiment. In the upper view of FIG. 6, the horizontal axis represents time and the vertical axis represents room temperature. In the lower part of FIG. 6, the horizontal axis represents time, and the vertical axis represents the open / close command state of the indoor expansion unit 16. Next, the cooling operation will be described. As shown in FIG. 6, the calculation means 33 calculates Tset1 at the 1st count, Tset2 at the 2nd count, Tset3 at the 3rd count, ... Tsetn at the Nth count. The calculation means 33 adds all of Tset1 to Tsetn and then divides by the count N. As a result, the calculation means 33 calculates the average value. The control device 4 opens the indoor expansion unit 16 when the thermo is on, and closes the indoor expansion unit 16 when the thermo is off.
　図７は、実施の形態１に係る暖房運転時の膨張部の動作不良を示すグラフである。図７の上図は、室内膨張部１６の動作が正常である場合について示し、図７の下図は、室内膨張部１６の動作が不良である場合について示す。図７の上図上段において、横軸は時間を示し、縦軸は室内温度を示す。図７の上図下段において、横軸は時間を示し、縦軸は室内膨張部１６の開閉指令状態を示す。図７の下図上段において、横軸は時間を示し、縦軸は室内温度を示す。図７の下図下段において、横軸は時間を示し、縦軸は室内膨張部１６の開閉指令状態を示す。ここで、室内膨張部１６が動作不良を起こしている場合について説明する。図７の上図に示すように、室内膨張部１６の動作が正常である場合、制御装置４は、サーモオンのとき室内膨張部１６を開き、サーモオフのとき室内膨張部１６を閉じる。これに対し、図７の下図に示すように、室内膨張部１６の動作が不良である場合、制御装置４は、サーモオフのとき室内膨張部１６を閉じるよう指示しても、室内膨張部１６が反応せず閉じない。このため、冷媒回路６に冷媒が流れず、室内機３が暖房運転しない。従って、室内温度が下がり続ける。 FIG. 7 is a graph showing a malfunction of the expansion portion during the heating operation according to the first embodiment. The upper figure of FIG. 7 shows the case where the operation of the indoor expansion unit 16 is normal, and the lower figure of FIG. 7 shows the case where the operation of the indoor expansion unit 16 is poor. In the upper part of the upper figure of FIG. 7, the horizontal axis represents time and the vertical axis represents room temperature. In the lower part of the upper part of FIG. 7, the horizontal axis indicates time, and the vertical axis indicates the open / close command state of the indoor expansion unit 16. In the lower part of FIG. 7, the horizontal axis represents time and the vertical axis represents room temperature. In the lower part of the lower figure of FIG. 7, the horizontal axis represents time, and the vertical axis represents the open / close command state of the indoor expansion unit 16. Here, a case where the indoor expansion portion 16 is malfunctioning will be described. As shown in the upper part of FIG. 7, when the operation of the indoor expansion unit 16 is normal, the control device 4 opens the indoor expansion unit 16 when the thermo is on and closes the indoor expansion unit 16 when the thermo is off. On the other hand, as shown in the lower figure of FIG. 7, when the operation of the indoor expansion unit 16 is poor, even if the control device 4 instructs to close the indoor expansion unit 16 when the thermostat is off, the indoor expansion unit 16 does not operate. It does not react and does not close. Therefore, the refrigerant does not flow through the refrigerant circuit 6, and the indoor unit 3 does not operate for heating. Therefore, the room temperature continues to drop.
　（書込手段３４）
　書込手段３４は、算出手段３３によって算出された設定温度到達時間Ｔｓｅｔが、記憶手段３１に記憶された時間閾値を超えた場合、室内機３をリストに書き込むものである。図７に示すように、室内膨張部１６が動作不良を起こしている場合、室内温度が下がり続けるため、設定温度到達時間Ｔｓｅｔが長くなる。書込手段３４は、設定温度到達時間Ｔｓｅｔが時間閾値を超えた場合、室内機３をリストに書き込む。ここで、リストは、不調の兆しがある室内機３が並べられたものである。なお、本実施の形態１では、設定温度到達時間Ｔｓｅｔとして平均値を用いている場合について例示する。 (Writing means 34)
The writing means 34 writes the indoor unit 3 in the list when the set temperature arrival time Tset calculated by the calculating means 33 exceeds the time threshold value stored in the storage means 31. As shown in FIG. 7, when the indoor expansion unit 16 malfunctions, the indoor temperature continues to decrease, so that the set temperature arrival time Tset becomes long. When the set temperature arrival time Tset exceeds the time threshold value, the writing means 34 writes the indoor unit 3 in the list. Here, the list is an array of indoor units 3 showing signs of malfunction. In the first embodiment, the case where the average value is used as the set temperature arrival time Tset will be illustrated.
　（出力手段３５）
　出力手段３５は、複数の室内機３を、算出手段３３によって算出された設定温度到達時間Ｔｓｅｔの順に並べたリストを出力する。具体的には、出力手段３５は、リストを表示装置５に表示させる。このとき、出力手段３５は、リストを保守サービス会社に送信してもよい。これにより、空気調和システム１が各空調対象空間に対し適切な温度調整を行うことができる。なお、出力手段３５は、設定温度到達時間Ｔｓｅｔが時間閾値を超えていなくても、複数の室内機３を、設定温度到達時間Ｔｓｅｔの順に並べたリストを出力してもよい。また、出力手段３５は、算出手段３３によって算出された設定温度到達時間Ｔｓｅｔが、予め設定された時間閾値を超えた場合、発報するものであってもよい。 (Output means 35)
The output means 35 outputs a list in which the plurality of indoor units 3 are arranged in the order of the set temperature arrival time Tset calculated by the calculation means 33. Specifically, the output means 35 causes the display device 5 to display the list. At this time, the output means 35 may transmit the list to the maintenance service company. As a result, the air conditioning system 1 can appropriately adjust the temperature of each air-conditioned space. The output means 35 may output a list in which a plurality of indoor units 3 are arranged in the order of the set temperature arrival time Tset even if the set temperature arrival time Tset does not exceed the time threshold value. Further, the output means 35 may issue a report when the set temperature arrival time Tset calculated by the calculation means 33 exceeds a preset time threshold value.
　図８は、実施の形態１に係る制御装置４の動作を示すフローチャートである。次に、制御装置４の動作について説明する。図８に示すように、制御装置４は、先ず、室内機３の運転開始時刻を記憶手段３１に記録する（ステップＳＴ１）。次に、判定手段３２は、室内温度検出部７によって検出された室内温度と設定温度との温度差を計測し（ステップＳＴ２）、温度差が温度閾値以下であるかを判定する（ステップＳＴ３）。温度差が温度閾値より大きい場合（ステップＳＴ３のＮＯ）、ステップＳＴ２に戻る。温度差が温度閾値以下の場合（ステップＳＴ３のＹＥＳ）、算出手段３３は、設定温度到達時間Ｔｓｅｔを算出する（ステップＳＴ４）。 FIG. 8 is a flowchart showing the operation of the control device 4 according to the first embodiment. Next, the operation of the control device 4 will be described. As shown in FIG. 8, the control device 4 first records the operation start time of the indoor unit 3 in the storage means 31 (step ST1). Next, the determination means 32 measures the temperature difference between the indoor temperature and the set temperature detected by the indoor temperature detection unit 7 (step ST2), and determines whether the temperature difference is equal to or less than the temperature threshold value (step ST3). .. When the temperature difference is larger than the temperature threshold value (NO in step ST3), the process returns to step ST2. When the temperature difference is equal to or less than the temperature threshold value (YES in step ST3), the calculation means 33 calculates the set temperature arrival time Tset (step ST4).
　そして、書込手段３４は、算出された設定温度到達時間Ｔｓｅｔが時間閾値より大きいかを判定する（ステップＳＴ５）。設定温度到達時間Ｔｓｅｔが時間閾値以下の場合（ステップＳＴ５のＮＯ）、ステップＳＴ４に戻る。一方、設定温度到達時間Ｔｓｅｔが時間閾値より大きい場合（ステップＳＴ５のＹＥＳ）、書込手段３４は、設定温度到達時間Ｔｓｅｔが時間閾値より大きい室内機３をリストに書き込む（ステップＳＴ６）。制御装置４は、各室内機３の設定温度到達時間Ｔｓｅｔを収集する（ステップＳＴ７）。出力手段３５は、複数の室内機３を、設定温度到達時間Ｔｓｅｔの順に並べたリストを表示装置５に出力する（ステップＳＴ８）。制御装置４は、リストを保守サービス会社に送信する（ステップＳＴ９）。 Then, the writing means 34 determines whether the calculated set temperature arrival time Tset is larger than the time threshold value (step ST5). When the set temperature arrival time Tset is equal to or less than the time threshold value (NO in step ST5), the process returns to step ST4. On the other hand, when the set temperature arrival time Tset is larger than the time threshold value (YES in step ST5), the writing means 34 writes the indoor unit 3 whose set temperature arrival time Tset is larger than the time threshold value in the list (step ST6). The control device 4 collects the set temperature arrival time Tset of each indoor unit 3 (step ST7). The output means 35 outputs a list of the plurality of indoor units 3 arranged in the order of the set temperature arrival time Tset to the display device 5 (step ST8). The control device 4 transmits the list to the maintenance service company (step ST9).
　本実施の形態１によれば、出力手段３５は、複数の室内機３を、室内温度と設定温度とに基づいて算出された設定温度到達時間Ｔｓｅｔの順に並べたリストを出力する。ここで、設定温度到達時間Ｔｓｅｔは、室内温度と設定温度という空調系統の情報である。このように、本実施の形態１は、外部情報ではなく空調系統の情報を用いて、空調の不調を予測する。従って、空調の不調を予測するために必要な情報の収集が簡便である。 According to the first embodiment, the output means 35 outputs a list in which a plurality of indoor units 3 are arranged in the order of the set temperature arrival time Tset calculated based on the indoor temperature and the set temperature. Here, the set temperature arrival time Tset is information on the air conditioning system of the room temperature and the set temperature. As described above, in the first embodiment, the malfunction of the air conditioning is predicted by using the information of the air conditioning system instead of the external information. Therefore, it is easy to collect the information necessary for predicting the malfunction of the air conditioner.
　原則として、室内機３が設置されたのちに室内機３の設置環境が変わることはない。このため、設置環境下におかれた室内機３の設定温度到達時間Ｔｓｅｔは、ほぼ一定となる傾向がある。利用者において、設定温度到達時間Ｔｓｅｔが長いことは、空調対象空間が所望の環境温度となっていない時間が長いことを意味する。このため、設定温度到達時間Ｔｓｅｔが長い場合、利用者からのクレームが発生する蓋然性がある。本実施の形態１は、管理者がリストを参照することによって、状況を確認する室内機３に優先順位を付けることができる。従って、管理者は、優先順位が高い室内機３から順に状況を確認し、状況によって修理等の対応を行うことができる。また、制御装置４がリストを保守サービス会社に送信することによって、保守サービス会社がリストを参照して空気調和システム１に対し適切な保全を行うことができる。 As a general rule, the installation environment of the indoor unit 3 does not change after the indoor unit 3 is installed. Therefore, the set temperature arrival time Tset of the indoor unit 3 placed in the installation environment tends to be substantially constant. For the user, a long time for reaching the set temperature Tset means a long time when the space to be air-conditioned is not at the desired environmental temperature. Therefore, if the set temperature arrival time Tset is long, there is a possibility that a complaint from the user will occur. In the first embodiment, the administrator can prioritize the indoor unit 3 for confirming the situation by referring to the list. Therefore, the manager can check the situation in order from the indoor unit 3 having the highest priority, and can take measures such as repair depending on the situation. Further, when the control device 4 transmits the list to the maintenance service company, the maintenance service company can refer to the list and perform appropriate maintenance on the air conditioning system 1.
　また、出力手段３５は、算出手段３３によって算出された設定温度到達時間Ｔｓｅｔが、予め設定された時間閾値を超えた場合、発報するものであってもよい。これにより、管理者は、設定温度到達時間Ｔｓｅｔが長く利用者からのクレームが発生する蓋然性がある室内機３を把握することができる。従って、管理者は、修理等の対応を直ちに行うことができる。この場合、室内機３は１台であってもよい。 Further, the output means 35 may issue a report when the set temperature arrival time Tset calculated by the calculation means 33 exceeds a preset time threshold value. As a result, the administrator can grasp the indoor unit 3 which has a long set temperature arrival time Tset and is likely to cause a complaint from the user. Therefore, the manager can immediately take measures such as repair. In this case, the number of indoor units 3 may be one.
　（変形例）
　変形例において、算出手段３３は、設定温度到達時間Ｔｓｅｔを、室内機３の運転時間で除算した割合を算出する。通例、割合は４０％以下である。即ち、割合が４０％を超えた場合、室内機３の空調能力の低下又は空調負荷の増加が発生していると推定することができる。書込手段３４は、例えば、割合が４０％を超えた場合、室内機３をリストに書き込む。これにより、管理者は、室内機３の空調能力の低下又は空調負荷の増加が発生している可能性があることを認識することができる。 (Modification example)
In the modified example, the calculation means 33 calculates the ratio of the set temperature arrival time Tset divided by the operating time of the indoor unit 3. Usually, the percentage is 40% or less. That is, when the ratio exceeds 40%, it can be estimated that the air conditioning capacity of the indoor unit 3 is lowered or the air conditioning load is increased. The writing means 34 writes the indoor unit 3 in the list, for example, when the ratio exceeds 40%. As a result, the manager can recognize that the air conditioning capacity of the indoor unit 3 may be lowered or the air conditioning load may be increased.
実施の形態２．
　図９は、実施の形態２に係る設定温度到達時間Ｔｓｅｔの平均値を示すグラフである。本実施の形態２は、出力手段３５が平均値を一日に一度出力する点で実施の形態１と相違する。本実施の形態２では、実施の形態１と共通する部分は同一の符号を付して説明を省略し、実施の形態１との相違点を中心に説明する。 Embodiment 2.
FIG. 9 is a graph showing an average value of the set temperature arrival time Tset according to the second embodiment. The second embodiment is different from the first embodiment in that the output means 35 outputs the average value once a day. In the second embodiment, the parts common to the first embodiment are designated by the same reference numerals, the description thereof will be omitted, and the differences from the first embodiment will be mainly described.
　図９において、横軸は日付を示し、縦軸は設定温度到達時間Ｔｓｅｔの平均値を示す。出力手段３５は、設定温度到達時間Ｔｓｅｔの平均値を一日に一度表示装置５に出力し、図９に示すようなグラフを作成する。そして、出力手段３５は、平均値が予め定められた平均閾値を上回った場合、発報するものである。図９に示すように、設定温度到達時間Ｔｓｅｔの平均値が、ある日を境に高くなっている傾向がみられる場合、ある日を境に室内機３が不調となった可能性が高い。このように、管理者は、設定温度到達時間Ｔｓｅｔの時間推移を認識することによって、室内機３の不調を直ちに把握することができる。 In FIG. 9, the horizontal axis indicates the date, and the vertical axis indicates the average value of the set temperature arrival time Tset. The output means 35 outputs the average value of the set temperature arrival time Tset to the display device 5 once a day, and creates a graph as shown in FIG. Then, the output means 35 issues a report when the average value exceeds a predetermined average threshold value. As shown in FIG. 9, when the average value of the set temperature arrival time Tset tends to increase after a certain day, it is highly possible that the indoor unit 3 has malfunctioned after a certain day. In this way, the administrator can immediately grasp the malfunction of the indoor unit 3 by recognizing the time transition of the set temperature arrival time Tset.
　ここで、制御装置４が一年をとおして設定温度到達時間Ｔｓｅｔの平均値を記憶手段３１に記憶している場合について例示する。管理者は、昨年度の夏季の平均値と今年度の夏季の平均値とを比べ、今年度の夏季の平均値が長い場合、扉又は窓等を開けたまま空調している可能性があることを把握することができる。また、管理者は、昨年度の夏季の平均値と今年度の夏季の平均値とを比べ、今年度の夏季の平均値が長い場合、冷房しても冷え難い状況が発生している可能性があることを把握することができる。この場合、管理者は、保守サービス会社に状況を確認し、保守サービス会社における積極的な保全を促すことができる。 Here, an example will be made of a case where the control device 4 stores the average value of the set temperature arrival time Tset in the storage means 31 throughout the year. The manager compares the average value of last year's summer with the average value of this year's summer, and if the average value of this year's summer is long, there is a possibility that the air conditioning is performed with the door or window open. Can be grasped. In addition, the manager compares the average value of last year's summer with the average value of this year's summer, and if the average value of this year's summer is long, there is a possibility that it is difficult to cool even if it is cooled. You can grasp that there is. In this case, the manager can confirm the situation with the maintenance service company and urge the maintenance service company to actively carry out maintenance.
実施の形態３．
　図１０は、実施の形態３に係るサーモオンの回数を示すグラフである。本実施の形態３は、出力手段３５がサーモオンの回数を一日に一度出力する点で実施の形態１と相違する。本実施の形態３では、実施の形態１と共通する部分は同一の符号を付して説明を省略し、実施の形態１との相違点を中心に説明する。 Embodiment 3.
FIG. 10 is a graph showing the number of thermoons according to the third embodiment. The third embodiment is different from the first embodiment in that the output means 35 outputs the number of thermoons once a day. In the third embodiment, the parts common to the first embodiment are designated by the same reference numerals, the description thereof will be omitted, and the differences from the first embodiment will be mainly described.
　図１０において、横軸は日付を示し、縦軸はサーモオンの回数を示す。出力手段３５は、サーモオンの回数を一日に一度表示装置５に出力し、図１０に示すようなグラフを作成する。そして、出力手段３５は、予め設定された期間においてカウントされたサーモオンの回数が予め定められたオン回数閾値を下回った場合、発報するものである。図１０に示すように、サーモオンの回数が、ある日を境に少なくなっている傾向がみられる場合、ある日を境に室内機３が不調となった可能性が高い。サーモオンの回数が少ないということは、室内温度が設定温度から逸脱した場合に制御装置４がサーモオンを指示しても、空気調和システム１のいずれかの機器に異常が生じ、サーモオンしていない蓋然性が高いことが考えられる。このように、管理者は、サーモオンの回数の時間推移を認識することによって、室内機３の不調を直ちに把握することができる。 In FIG. 10, the horizontal axis shows the date and the vertical axis shows the number of thermoons. The output means 35 outputs the number of thermo-ons to the display device 5 once a day, and creates a graph as shown in FIG. Then, the output means 35 issues a report when the number of thermo-ons counted in the preset period falls below the predetermined on-number threshold value. As shown in FIG. 10, when the number of thermo-ons tends to decrease after a certain day, it is highly possible that the indoor unit 3 has malfunctioned after a certain day. The fact that the number of thermo-ons is small means that even if the control device 4 instructs the thermo-on when the room temperature deviates from the set temperature, an abnormality occurs in one of the devices of the air conditioning system 1 and it is probable that the thermo-on is not performed. It can be expensive. In this way, the administrator can immediately grasp the malfunction of the indoor unit 3 by recognizing the time transition of the number of thermo-ons.
実施の形態４．
　図１１は、実施の形態４に係る室内機３の運転回数を示すグラフである。本実施の形態４は、出力手段３５が室内機３の運転回数を一日に一度出力する点で実施の形態１と相違する。本実施の形態４では、実施の形態１と共通する部分は同一の符号を付して説明を省略し、実施の形態１との相違点を中心に説明する。 Embodiment 4.
FIG. 11 is a graph showing the number of operations of the indoor unit 3 according to the fourth embodiment. The fourth embodiment is different from the first embodiment in that the output means 35 outputs the number of operations of the indoor unit 3 once a day. In the fourth embodiment, the parts common to the first embodiment are designated by the same reference numerals, the description thereof will be omitted, and the differences from the first embodiment will be mainly described.
　図１１において、横軸は日付を示し、縦軸は室内機３の運転回数を示す。出力手段３５は、室内機３の運転回数を一日に一度表示装置５に出力し、図１１に示すようなグラフを作成する。そして、出力手段３５は、設定温度到達時間Ｔｓｅｔが時間閾値を超え、且つ、室内機３の運転回数が予め定められた運転回数閾値を下回った場合、発報するものである。図１１に示すように、室内機３の運転回数が、ある日を境に少なくなっている傾向がみられる場合、ある日を境に室内機３が不調となった可能性が高い。 In FIG. 11, the horizontal axis indicates the date, and the vertical axis indicates the number of times the indoor unit 3 has been operated. The output means 35 outputs the number of operations of the indoor unit 3 to the display device 5 once a day, and creates a graph as shown in FIG. Then, the output means 35 issues a report when the set temperature arrival time Tset exceeds the time threshold value and the number of operations of the indoor unit 3 falls below the predetermined number of times of operation threshold value. As shown in FIG. 11, when the number of operations of the indoor unit 3 tends to decrease after a certain day, it is highly possible that the indoor unit 3 has malfunctioned after a certain day.
　室内膨張部１６が正常である場合、空気調和システム１において、設定温度到達時間Ｔｓｅｔは３０分以内であり、室内機３に設けられた室内膨張部１６の一日の動作回数は５回以上である。これに対し、室内膨張部１６に異常が発生して本来の空調能力が発揮されない場合、設定温度到達時間Ｔｓｅｔが伸び、且つ室内膨張部１６の動作回数も減少する。管理者は、設定温度到達時間Ｔｓｅｔ及び室内機３の運転回数を認識することによって、室内機３の不調を直ちに把握することができる。 When the indoor expansion unit 16 is normal, in the air conditioning system 1, the set temperature arrival time Tset is within 30 minutes, and the indoor expansion unit 16 provided in the indoor unit 3 operates 5 times or more per day. be. On the other hand, when an abnormality occurs in the indoor expansion unit 16 and the original air conditioning capacity is not exhibited, the set temperature arrival time Tset is extended and the number of operations of the indoor expansion unit 16 is also reduced. The administrator can immediately grasp the malfunction of the indoor unit 3 by recognizing the set temperature arrival time Tset and the number of operations of the indoor unit 3.
　１　空気調和システム、２　室外機、３　室内機、４　制御装置、５　表示装置、６　冷媒回路、６ａ　冷媒配管、７　室内温度検出部、１１　圧縮機、１２　流路切替装置、１３　室外熱交換器、１４　室外送風機、１５　室外膨張部、１６　室内膨張部、１７　室内熱交換器、１８　室内送風機、１９　アキュムレータ、２０　電磁弁、２１　ガス管、２２　液管、３１　記憶手段、３２　判定手段、３３　算出手段、３４　書込手段、３５　出力手段。 1 Air conditioning system, 2 Outdoor unit, 3 Indoor unit, 4 Control device, 5 Display device, 6 Refrigerant circuit, 6a Refrigerant piping, 7 Indoor temperature detector, 11 Compressor, 12 Flow path switching device, 13 Outdoor heat exchanger , 14 outdoor blower, 15 outdoor expansion part, 16 indoor expansion part, 17 indoor heat exchanger, 18 indoor blower, 19 accumulator, 20 electromagnetic valve, 21 gas pipe, 22 liquid pipe, 31 storage means, 32 judgment means, 33 calculation Means, 34 writing means, 35 output means.

Claims (9)

  1. 　室外に設けられる室外機と、
    　前記室外機に接続され、複数の空調対象空間の空気を、設定された設定温度になるようにそれぞれ調整する複数の室内機と、
    　前記空調対象空間の室内温度を検出する室内温度検出部と、
    　前記室外機及び前記室内機の動作を制御する制御装置と、を備え、
    　前記制御装置は、
    　前記室内温度検出部によって検出された前記室内温度と前記設定温度とに基づいて、前記室内温度が前記設定温度に到達するまでの設定温度到達時間を算出する算出手段と、
    　複数の前記室内機を、前記算出手段によって算出された前記設定温度到達時間の順に並べたリストを出力する出力手段と、を有する
    　空気調和システム。     The outdoor unit installed outdoors and
    A plurality of indoor units connected to the outdoor unit and adjusting the air in a plurality of air-conditioned spaces so as to reach a set set temperature.
    An indoor temperature detection unit that detects the indoor temperature of the air-conditioned space,
    A control device for controlling the operation of the outdoor unit and the indoor unit is provided.
    The control device is
    A calculation means for calculating the set temperature arrival time until the indoor temperature reaches the set temperature based on the indoor temperature and the set temperature detected by the indoor temperature detection unit.
    An air conditioning system including an output means for outputting a list of a plurality of the indoor units arranged in the order of the set temperature arrival time calculated by the calculation means.
  2. 　前記制御装置は、
    　前記算出手段によって算出された前記設定温度到達時間が、予め設定された時間閾値を超えた場合、前記室内機を前記リストに書き込む書込手段を更に有する
    　請求項１記載の空気調和システム。     The control device is
    The air conditioning system according to claim 1, further comprising a writing means for writing the indoor unit to the list when the set temperature arrival time calculated by the calculation means exceeds a preset time threshold value.
  3. 　前記制御装置は、
    　前記室内温度検出部によって検出された前記室内温度と前記設定温度との温度差が、予め設定された温度閾値以下であるかを判定する判定手段を更に有し、
    　前記算出手段は、前記判定手段によって前記温度差が前記温度閾値以下であると判定された場合、前記設定温度到達時間を算出する
    　請求項１又は２記載の空気調和システム。     The control device is
    Further, it has a determination means for determining whether the temperature difference between the indoor temperature and the set temperature detected by the indoor temperature detection unit is equal to or less than a preset temperature threshold value.
    The air conditioning system according to claim 1 or 2, wherein the calculation means calculates the set temperature arrival time when the determination means determines that the temperature difference is equal to or less than the temperature threshold value.
  4. 　前記算出手段は、
    　１台の前記室内機における複数の前記設定温度到達時間の平均値を算出する
    　請求項１～３のいずれか１項に記載の空気調和システム。     The calculation means is
    The air conditioning system according to any one of claims 1 to 3, which calculates an average value of a plurality of set temperature arrival times in one indoor unit.
  5. 　前記出力手段は、
    　前記平均値が予め定められた平均閾値を上回った場合、発報するものである
    　請求項４記載の空気調和システム。     The output means
    The air conditioning system according to claim 4, wherein when the average value exceeds a predetermined average threshold value, an alarm is issued.
  6. 　前記算出手段は、
    　前記設定温度到達時間を、前記室内機の運転時間で除算した割合を算出する
    　請求項１～５のいずれか１項に記載の空気調和システム。     The calculation means is
    The air conditioning system according to any one of claims 1 to 5, which calculates a ratio obtained by dividing the set temperature arrival time by the operating time of the indoor unit.
  7. 　前記制御装置は、
    　前記室内温度検出部によって検出された前記室内温度と前記設定温度との温度差が、予め設定された温度閾値より大きい場合に、前記室内機を運転するサーモオンを行うものであり、
    　前記出力手段は、
    　予め設定された期間においてカウントされた前記サーモオンの回数が予め定められたオン回数閾値を下回った場合、発報するものである
    　請求項１～６のいずれか１項に記載の空気調和システム。     The control device is
    When the temperature difference between the indoor temperature and the set temperature detected by the indoor temperature detection unit is larger than the preset temperature threshold value, the thermo-on for operating the indoor unit is performed.
    The output means
    The air-conditioning system according to any one of claims 1 to 6, which issues a notification when the number of times of the thermo-on counted in a preset period falls below a predetermined on-number-of-times threshold value.
  8. 　前記制御装置は、
    　前記室内温度検出部によって検出された前記室内温度と前記設定温度との温度差が、予め設定された温度閾値より大きい場合に、前記室内機を運転するものであり、
    　前記出力手段は、
    　前記算出手段によって算出された前記設定温度到達時間が、予め設定された時間閾値を超え、且つ、前記室内機の運転回数が予め定められた運転回数閾値を下回った場合、発報するものである
    　請求項１～７のいずれか１項に記載の空気調和システム。     The control device is
    The indoor unit is operated when the temperature difference between the indoor temperature and the set temperature detected by the indoor temperature detection unit is larger than a preset temperature threshold value.
    The output means
    When the set temperature arrival time calculated by the calculation means exceeds the preset time threshold value and the number of operations of the indoor unit falls below the predetermined operation number threshold value, an alarm is issued. The air conditioning system according to any one of claims 1 to 7.
  9. 　室外に設けられる室外機と、
    　前記室外機に接続され、空調対象空間の空気を、設定された設定温度になるように調整する室内機と、
    　前記空調対象空間の室内温度を検出する室内温度検出部と、
    　前記室外機及び前記室内機の動作を制御する制御装置と、を備え、
    　前記制御装置は、
    　前記室内温度検出部によって検出された前記室内温度と前記設定温度とに基づいて、前記室内温度が前記設定温度に到達するまでの設定温度到達時間を算出する算出手段と、
    　前記算出手段によって算出された前記設定温度到達時間が、予め設定された時間閾値を超えた場合、発報する出力手段と、を有する
    　空気調和システム。     The outdoor unit installed outdoors and
    An indoor unit that is connected to the outdoor unit and adjusts the air in the air-conditioned space to a set temperature.
    An indoor temperature detection unit that detects the indoor temperature of the air-conditioned space,
    A control device for controlling the operation of the outdoor unit and the indoor unit is provided.
    The control device is
    A calculation means for calculating the set temperature arrival time until the indoor temperature reaches the set temperature based on the indoor temperature and the set temperature detected by the indoor temperature detection unit.
    An air conditioning system including an output means for issuing a report when the set temperature arrival time calculated by the calculation means exceeds a preset time threshold value.
PCT/JP2020/019607 2020-02-05 2020-05-18 Air conditioning system WO2021157105A1 (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11316043A (en) * 1998-05-07 1999-11-16 Mitsubishi Electric Building Techno Service Co Ltd Abnormality detector for air conditioner
JP2010038471A (en) * 2008-08-06 2010-02-18 Daikin Ind Ltd Air conditioner management device and air conditioner management method
JP2010210121A (en) * 2009-03-09 2010-09-24 Mitsubishi Electric Corp Air conditioner

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11316043A (en) * 1998-05-07 1999-11-16 Mitsubishi Electric Building Techno Service Co Ltd Abnormality detector for air conditioner
JP2010038471A (en) * 2008-08-06 2010-02-18 Daikin Ind Ltd Air conditioner management device and air conditioner management method
JP2010210121A (en) * 2009-03-09 2010-09-24 Mitsubishi Electric Corp Air conditioner

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