Air conditioning system, control method of air conditioning system, program, and control device

Abstract

The present disclosure provides a technique for reducing power consumption in an indoor unit included in an air conditioner in an air conditioning system including a plurality of air processing devices that process air in a target space including at least the air conditioner including the indoor unit and air-conditioning the target space.SOLUTION: An air processing device including an indoor unit including a first fan, a first thermometer, and a refrigerant circuit including a heat exchanger, the indoor unit being configured to perform a cooling operation or a heating operation for a target space, a second fan, and a second thermometer configured to measure a temperature in the target space; A control unit configured to resume the operation of the first fan provided in the indoor unit when a second temperature measured by the second thermometer in the air treatment apparatus in which the second fan is operating satisfies a second predetermined condition while the first fan is stopped.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to an air conditioning system, a control method for an air conditioning system, a program, and a control device. [Background technology]

[0002] Patent Document 1 discloses an indoor unit having a room temperature sensor, an indoor heat exchanger, an indoor fan, and an indoor control unit. Patent Document 1 also discloses that the indoor control unit determines whether or not the conditions for starting room temperature monitoring by the room temperature sensor are met, and drives the indoor fan if room temperature monitoring is to be performed when the thermostat is off during heating operation. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2003-287258 Summary of the Invention [Problem to be solved by the invention]

[0004] When the thermostat is off, the indoor fan runs primarily for the purpose of monitoring the room temperature. When the indoor fan is running, electricity is consumed to operate the indoor fan. On the other hand, if the indoor fan is stopped, accurate temperature monitoring cannot be obtained.

[0005] Therefore, there is a need to reduce power consumption by stopping the fan when the thermostat is off, while also being able to accurately obtain the indoor temperature.

[0006] The present disclosure provides a technique for reducing power consumption in an air conditioning system that includes a plurality of air processing devices that process air in a target space, including at least an air conditioner that has an indoor unit and conditions the target space. [Means for solving the problem]

[0007] The first aspect of the air conditioning system is an indoor unit that includes a first fan, a first thermometer, and a refrigerant circuit including a heat exchanger, and that performs cooling or heating operation for a target space; an air treatment device including a second fan and a second thermometer for measuring a temperature in the target space; a control unit that controls the first fan included in the indoor unit to stop when a first temperature measured by the first thermometer satisfies a first predetermined condition, and controls the first fan included in the indoor unit to resume operation when a second temperature measured by the second thermometer in the air processing device in which the second fan is operating while the first fan is stopped satisfies a second predetermined condition; Equipped with It is an air conditioning system.

[0008] According to the air conditioning system of the first aspect, the power consumption in the air conditioning system can be reduced by stopping the first fan provided in the indoor unit that satisfies the first predetermined condition.

[0009] The second aspect of the air conditioning system is A plurality of the air treatment devices are provided, When an average value of the second temperatures acquired from each of the plurality of air treatment devices satisfies the second predetermined condition, the control unit controls the first fan provided in the indoor unit to resume operation. This is the first perspective of the air conditioning system.

[0010] According to the air conditioning system of the second aspect, the temperature of the target space can be measured more accurately by averaging the second temperatures acquired from each of the multiple air processing devices.

[0011] The third perspective of the air conditioning system is A plurality of the air treatment devices are provided, When the second temperature measured by the second thermometer provided in the air processing device closest to the indoor unit among the plurality of air processing devices satisfies the second predetermined condition, the control unit controls the first fan provided in the indoor unit to resume operation. This is the first perspective of the air conditioning system.

[0012] According to the air conditioning system of the third aspect, the room temperature is measured by the second thermometer provided in the air processing device closest to the indoor unit, so that the temperature around the indoor unit in the target space can be measured more accurately.

[0013] The fourth perspective of the air conditioning system is A plurality of the air treatment devices are provided, The control unit controls the first fan of the indoor unit to resume operation when the second temperature measured by the second thermometer provided in the air processing device, the second thermometer being provided 1.5 meters or less from the floor, satisfies the second predetermined condition, in the plurality of air processing devices. This is the first perspective of the air conditioning system.

[0014] According to the air conditioning system of the fourth aspect, the temperature experienced by a person in the target space can be measured by measuring the room temperature using a second thermometer installed 1.5 meters or less from the floor.

[0015] The fifth aspect of the air conditioning system is The air treatment device is a ventilation device, When the second fan included in the ventilation device is operating, the control unit controls the first fan included in the indoor unit to resume operation when the second temperature measured by the second thermometer included in the ventilation device satisfies the second predetermined condition. This is the first perspective of the air conditioning system.

[0016] According to the air conditioning system of the fifth aspect, the power consumption of the air conditioning system can be reduced by measuring the room temperature using a thermometer of the ventilation device when the fan is operating.

[0017] The sixth aspect of the air conditioning system is The air treatment device is an air purifier, When the second fan included in the air purifier is operating, the control unit controls the first fan included in the indoor unit to resume operation when the second temperature measured by the second thermometer included in the air purifier satisfies the second predetermined condition. This is the first perspective of the air conditioning system.

[0018] According to the air conditioning system of the sixth aspect, the power consumption of the air conditioning system can be reduced by measuring the room temperature using the thermometer of the air purifier when the fan is operating.

[0019] The seventh aspect of the air conditioning system is A plurality of the air treatment devices are provided, Each of the plurality of air treatment devices is a second indoor unit, the control unit controls the plurality of second indoor units to resume operation of the first fan provided in the indoor unit when the second temperature measured by the second thermometer in the second indoor unit in which the second fan is operating satisfies the second predetermined condition. This is the first perspective of the air conditioning system.

[0020] According to the air conditioning system of the seventh aspect, the power consumption of the air conditioning system can be reduced by measuring the room temperature using a thermometer in the indoor unit in which the fan is operating.

[0021] The eighth aspect of the air conditioning system is A plurality of the air treatment devices are provided, When all the second fans in the plurality of air processing devices are not operating, the control unit operates the second fan in any of the air processing devices, and when the second temperature measured by the second thermometer in the air processing device having the operating second fan satisfies the second predetermined condition, controls to resume operation of the first fan provided in the indoor unit. This is the first perspective of the air conditioning system.

[0022] According to the air conditioning system of the eighth aspect, the power consumption of the air conditioning system can be reduced by operating the fan of any one of the air processing devices.

[0023] The ninth aspect of the air conditioning system is A plurality of the air treatment devices are provided, Each of the plurality of air treatment devices is a second indoor unit, When the first predetermined condition is satisfied in the indoor unit and all of the plurality of second indoor units, the control unit identifies a representative indoor unit from among the indoor units and the plurality of second indoor units, stops the fans of the indoor units other than the representative indoor unit, and, when the second temperature measured by a thermometer provided in the representative indoor unit satisfies the second predetermined condition, controls the fans provided in the indoor units other than the representative indoor unit to resume operation. This is the first perspective of the air conditioning system.

[0024] According to the air conditioning system of the ninth aspect, the power consumption of the air conditioning system can be reduced by stopping the fans of all indoor units other than the representative indoor unit.

[0025] The 10th aspect of the air conditioning system is The control unit calculates the power consumption when the second fan provided in each of the plurality of air treatment devices is operated, and when the second temperature measured by the second thermometer provided in the air treatment device with the lowest power consumption satisfies the second predetermined condition, controls the operation of the first fan provided in the indoor unit to resume. An air conditioning system according to an eighth or ninth aspect.

[0026] According to the air conditioning system of the tenth aspect, the power consumption of the air conditioning system can be reduced by using an air processing device that consumes the least amount of power.

[0027] The 11th aspect of the air conditioning system is the control unit controls the first fan provided in the indoor unit to continue operating for a predetermined period after restarting operation of the first fan, The air conditioning system according to any one of the first aspect to the tenth aspect.

[0028] According to the air conditioning system of the eleventh aspect, by continuing to operate the first fan for a predetermined period after restarting the operation of the first fan, it is possible to discharge heat that has accumulated in the indoor unit while the first fan was stopped.

[0029] The 12th aspect of the air conditioning system is The control unit controls the indoor unit based on a third temperature measured by the second thermometer included in the air treatment device during a predetermined period after restarting operation of the first fan included in the indoor unit. The air conditioning system according to any one of the first aspect to the eleventh aspect.

[0030] According to the air conditioning system of the twelfth aspect, by measuring the room temperature with the second thermometer provided in the air treatment device, it is possible to control the indoor unit using a more accurate temperature measurement value.

[0031] A first aspect of the air conditioning system control method includes: A control method for an air conditioning system including an indoor unit that performs cooling or heating operation for a target space, the indoor unit including a first fan, a first thermometer, and a refrigerant circuit including a heat exchanger, and an air processing device that includes a second fan and a second thermometer that measures a temperature in the target space, When a first temperature measured by the first thermometer satisfies a first predetermined condition, controlling the first fan provided in the indoor unit to stop; When a second temperature measured by the second thermometer in the air treatment device in which the second fan is operating satisfies a second predetermined condition while the first fan is stopped, controlling the operation of the first fan provided in the indoor unit to resume; Including, A method for controlling an air conditioning system.

[0032] According to the control method for an air conditioning system of the first aspect, the power consumption in the air conditioning system can be reduced by stopping the first fan provided in the indoor unit that satisfies the first predetermined condition.

[0033] The first perspective program is A computer that controls an air conditioning system that includes an indoor unit that has a first fan, a first thermometer, and a refrigerant circuit including a heat exchanger and performs cooling or heating operation for a target space, and an air processing device that has a second fan and a second thermometer that measures the temperature in the target space, a step of controlling the first fan of the indoor unit to stop when a first temperature measured by the first thermometer satisfies a first predetermined condition; a control procedure for restarting operation of the first fan provided in the indoor unit when a second temperature measured by the second thermometer in the air treatment device in which the second fan is operating satisfies a second predetermined condition while the first fan is stopped; This is a program for executing the above.

[0034] According to the program of the first aspect, it is possible to reduce power consumption in the air conditioning system by stopping the first fan provided in the indoor unit that satisfies the first predetermined condition.

[0035] A control device according to a first aspect includes: A control device for controlling an air conditioning system including an indoor unit that performs cooling or heating operation for a target space, the indoor unit including a first fan, a first thermometer, and a refrigerant circuit including a heat exchanger, and an air treatment device that includes a second fan and a second thermometer that measures the temperature in the target space, When a first temperature measured by the first thermometer satisfies a first predetermined condition, the first fan provided in the indoor unit is controlled to be stopped, and when a second temperature measured by the second thermometer in the air treatment device in which the second fan is operating while the first fan is stopped satisfies a second predetermined condition, the operation of the first fan provided in the indoor unit is controlled to be resumed. It is a control device.

[0036] According to the control device of the first aspect, it is possible to reduce power consumption in the air conditioning system by stopping the first fan provided in the indoor unit that satisfies the first predetermined condition. [Brief explanation of the drawings]

[0037] [Figure 1] FIG. 1 is a diagram showing an outline of the configuration of an air conditioning system according to this embodiment. [Figure 2] FIG. 2 is a diagram showing an outline of the configuration of the air conditioning system according to this embodiment. [Figure 3] FIG. 3 is a diagram showing the hardware configuration of the control unit provided in the air conditioning system according to this embodiment. [Figure 4] FIG. 4 is a flow diagram illustrating the processing in the air conditioning system according to this embodiment. [Figure 5] FIG. 5 is a diagram illustrating the positional relationship between the indoor units and the air processing device in the processing in the air conditioning system according to this embodiment. [Figure 6] FIG. 6 is a flow diagram illustrating the processing in the air conditioning system according to this embodiment. [Figure 7] FIG. 7 is a flow diagram illustrating the processing in the air conditioning system according to this embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0038] Hereinafter, embodiments will be described with reference to the accompanying drawings. In the description of each embodiment and the drawings, components having substantially the same or corresponding functional configurations may be designated by the same reference numerals, and redundant explanations may be omitted. Furthermore, to facilitate understanding, the scale of each part in the drawings may differ from the actual scale.

[0039] An air conditioning system according to this embodiment will be described. The air conditioning system according to this embodiment includes an indoor unit, an air treatment device, and a control unit. The indoor unit of the air conditioning system according to this embodiment includes a first fan, a first thermometer, and a refrigerant circuit including a heat exchanger, and performs cooling or heating operation on a target space. The air treatment device of the air conditioning system according to this embodiment also includes a second fan and a second thermometer that measures the temperature in the target space. The control unit of the air conditioning system according to this embodiment controls the indoor unit to stop the first fan when a first temperature measured by the first thermometer satisfies a first predetermined condition. The control unit of the air conditioning system according to this embodiment also controls the indoor unit to resume operation of the first fan when a second temperature measured by a second thermometer in the air treatment device in which the second fan is operating while the first fan is stopped satisfies a second predetermined condition.

[0040] The air conditioning system according to this embodiment will be described in detail with reference to the drawings. Figures 1 and 2 each show an outline of the configuration of an air conditioning system 1, which is an example of the air conditioning system according to this embodiment.

[0041] [Air conditioning system 1] As shown in FIG. 1, the air conditioning system 1 includes a plurality of air processing devices and a control device 40. The air conditioning system 1 includes a ventilation device 10, an air conditioner 20, and an air purifier 30 as examples of air processing devices that process air in the target space RM. The ventilation device 10 ventilates the target space RM. The air conditioner 20 heats or cools the target space RM. The air purifier 30 purifies the air in the target space RM. The air conditioner 20 includes an indoor unit 21 and an outdoor unit 22. The number of ventilation devices 10, air conditioners 20, and air purifiers 30 is not limited to the example of FIG. 1 and may be determined appropriately depending on the target space RM. Furthermore, in the air conditioning system 1, the number of indoor units 21 included in the air conditioner 20 may be two or more. Furthermore, the air conditioning system 1 may include one air conditioner 20 and at least one of the ventilation device 10 and the air purifier 30.

[0042] (Ventilation equipment 10) The ventilation device 10 performs a humidification operation to humidify the target space RM based on the humidity of the target space RM. The ventilation device 10 also performs a ventilation operation to ventilate the target space RM. The ventilation device 10 ventilates the target space RM by supplying outside air OA to the target space RM as supply air SA and exhausting return air RA as exhaust air EA. The ventilation device 10 also humidifies the target space RM by adsorbing moisture contained in the return air RA and releasing it into the supply air SA.

[0043] The ventilation device 10 detects the humidity in the target space RM, and humidifies the target space RM so that the humidity in the target space RM reaches a predetermined desired humidity (target humidity).

[0044] The ventilation device 10 includes a moisture absorbent 10d, a heater 10h, a fan 10f1, a fan 10f2, a thermometer 10t, a hygrometer 10s, and a control circuit 10c.

[0045] (moisture absorbent 10d) The moisture absorbent 10d adsorbs moisture contained in the return air RA. The moisture adsorbed by the moisture absorbent 10d is released into the outside air OA passing through the moisture absorbent 10d. The outside air OA from which the moisture adsorbed by the moisture absorbent 10d has been released is then supplied to the target space RM as supply air SA.

[0046] In the ventilation device 10, in order to interchange the part of the moisture absorbent 10d that adsorbs moisture contained in the return air RA with the part that releases the adsorbed moisture into the outside air OA, for example, the position of the moisture absorbent 10d may be changed or the flow path may be changed.

[0047] The moisture absorbent material 10d is, for example, a desiccant material.

[0048] (Heater 10h) The heater 10h heats the moisture absorbent 10d. When the outside air OA passes through the heated moisture absorbent 10d, the moisture contained in the moisture absorbent 10d is released into the outside air OA.

[0049] (Fan 10f1 and Fan 10f2) The fan 10f1 draws in return air RA that has been drawn in from the target space RM and passed through the moisture absorbent 10d, and discharges it to the outside as exhaust air EA. The fan 10f2 draws in outside air OA that has been drawn in from the outside and passed through the heater 10h and the moisture absorbent 10d, and supplies it to the target space RM as supply air SA.

[0050] Each of the fan 10f1 and the fan 10f2 is, for example, a sirocco fan. Each of the fan 10f1 and the fan 10f2 may be, for example, an axial flow fan.

[0051] (Thermometer 10t) The thermometer 10t detects the temperature of the return air RA. The temperature of the return air RA measured by the thermometer 10t is output to the control circuit 10c. The ventilation device 10 detects the temperature of the target space RM by detecting the temperature of the return air RA with the thermometer 10t.

[0052] (Hygrometer 10s) The hygrometer 10s detects the humidity of the return air RA. The humidity of the return air RA measured by the hygrometer 10s is output to the control circuit 10c.

[0053] (Control circuit 10c) The control circuit 10c controls the ventilation device 10. The control circuit 10c controls the heater 10h, the fan 10f1, and the fan 10f2. The control circuit 10c also controls the moisture absorbent 10d to change the positions at which adsorption and desorption occur. The control circuit 10c also acquires measurement results from the thermometer 10t and the hygrometer 10s. The control circuit 10c also communicates with the control device 40.

[0054] The control circuit 10c controls the heater 10h, the fan 10f1, and the fan 10f2 so that the humidity in the target space RM measured by the hygrometer 10s becomes the target humidity.

[0055] In the humidification operation, the control circuit 10c drives the absorbent 10d, the heater 10h, the fan 10f1, and the fan 10f2. In the humidification operation, the moisture in the return air RA is absorbed by the absorbent 10d, and the return air RA from which the moisture has been absorbed is exhausted as exhaust air EA. In the humidification operation, the outside air OA is humidified by the absorbent 10d, and the humidified outside air OA is released into the target space RM as supply air SA.

[0056] In ventilation operation, the control circuit 10c drives the fans 10f1 and 10f2 without driving the moisture absorbent 10d and the heater 10h. In ventilation operation, the return air RA is exhausted as exhaust air EA. Also, in ventilation operation, the outside air OA is released into the target space RM as supply air SA without being humidified by the moisture absorbent 10d. The volume of air supplied as supply air SA by the fan 10f2 is set to be greater than the volume of air discharged as exhaust air EA by the fan 10f1. Therefore, the target space RM becomes positive pressure. When the target space RM becomes positive pressure, the air in the target space RM leaks out of the target space RM, thereby ventilating the target space RM.

[0057] The ventilation device 10 may include, for example, a filter for removing dust and the like contained in each of the return air RA and the outside air OA, and a total heat exchanger. The hygrometer 10s is not limited to being provided inside the ventilation device 10, and may be provided, for example, in the target space RM. The ventilation device 10 does not need to be configured to perform a humidifying operation.

[0058] (Air conditioner 20) The air conditioner 20 performs a heating operation to heat the target space RM or a cooling operation to cool the target space RM based on the temperature of the target space RM. The air conditioner 20 draws in intake air IA from the target space RM. The air conditioner 20 then adjusts the temperature of the intake air IA and supplies it to the target space RM as temperature-controlled air CA. The air conditioner 20 includes an indoor unit 21, an outdoor unit 22, and a control circuit 20c. The control circuit 20c has a control circuit 21c built in the indoor unit and a control circuit 22c built in the outdoor unit. The control circuit 20c controls the air conditioner 20 so that the temperature of the target space RM becomes a set temperature. Specifically, when a set temperature is input by a user using a remote control or the like (not shown), the control circuit 20c determines a target temperature and controls the air conditioner 20 so that the temperature of the target space RM becomes the set temperature. The target temperature may be the same as the set temperature.

[0059] (indoor unit 21) The indoor unit 21 includes a heat exchanger 21a, a fan 21f, an indoor expansion valve 21v, thermometers 21t1 and 21t2, and a control circuit 21c.

[0060] The indoor unit 21 heats or cools the intake air IA by heat exchange with the refrigerant RF in the heat exchanger 21a. Then, the indoor unit 21 supplies the heated or cooled intake air IA to the target space RM as temperature-controlled air CA.

[0061] The fan 21f draws in intake air IA from the target space RM and discharges it toward the heat exchanger 21a. The intake air IA that has passed through the heat exchanger 21a is discharged into the target space RM as temperature-controlled air CA. The fan 21f is, for example, a sirocco fan. The fan 21f may also be, for example, an axial fan or a centrifugal fan.

[0062] The thermometer 21t1 measures the temperature of the intake air IA. By measuring the temperature of the intake air IA, the indoor unit 21 measures the temperature in the target space RM. The temperature measured by the thermometer 21t1 is output to the control circuit 21c. The thermometer 21t2 measures the temperature of the heat exchanger 21a. The evaporation temperature of the refrigerant RF in the air conditioner 20, more specifically, in the heat exchanger 21a provided in the indoor unit 21 of the air conditioner 20, is calculated from the temperature of the heat exchanger 21a measured by the thermometer 21t2. The temperature measured by the thermometer 21t2 is output to the control circuit 21c.

[0063] The control circuit 21c controls the indoor unit 21. The control circuit 21c controls the fan 21f and the indoor expansion valve 21v. The control circuit 21c also acquires measurement results from the thermometer 21t1 and the thermometer 21t2. The control circuit 21c also communicates with the control device 40 and the outdoor unit 22.

[0064] The control circuit 21c controls the fan 21f and the indoor expansion valve 21v so that the temperature of the target space RM measured by the thermometer 21t1 becomes the set temperature.

[0065] (Outdoor unit 22) The outdoor unit 22 includes a heat exchanger 22a, a fan 22f, an outdoor expansion valve 22v, a compressor 22b, a four-way valve 22d, and a control circuit 22c.

[0066] The outdoor unit 22 exchanges heat between the refrigerant RF and the outside air OA1 in the heat exchanger 22a. Then, the outdoor unit 22 discharges the outside air OA1 cooled or heated through the heat exchange to the outside as outside air OA2.

[0067] The fan 22f discharges the outside air OA1 that has passed through the heat exchanger 22a to the outside of the outdoor unit 22. The compressor 22b compresses the refrigerant RF. The four-way valve 22d switches the path of the refrigerant RF depending on the operating state of the air conditioner 20. The fan 22f is, for example, an axial flow fan.

[0068] The control circuit 22c controls the outdoor unit 22. The control circuit 22c controls each of the fan 22f, the compressor 22b, and the four-way valve 22d. The control circuit 22c also communicates with the indoor unit 21. More specifically, the control circuit 22c communicates with the control circuit 21c.

[0069] The control circuit 22c controls the outdoor unit 22 so that the temperature of the target space RM measured by the thermometer 21t1 becomes the set temperature.

[0070] The air conditioner 20 includes a refrigerant circuit 20r including a compressor 22b, a heat exchanger 22a, an outdoor expansion valve 22v, an indoor expansion valve 21v, and a heat exchanger 21a.

[0071] The operation of the air conditioner 20 will now be described. Figure 2 shows the cooling operation state.

[0072] First, a cooling operation in which the air conditioner 20 cools the target space RM will be described. When the air conditioner 20 is in a cooling operation in which it cools the target space RM, the control circuit 22c controls the four-way valve 22d so that the refrigerant RF discharged from the compressor 22b flows to the heat exchanger 22a. The high-pressure refrigerant RF discharged from the compressor 22b passes through the four-way valve 22d and is supplied to the heat exchanger 22a. The refrigerant RF supplied to the heat exchanger 22a undergoes heat exchange in the heat exchanger 22a. The refrigerant RF that has undergone heat exchange in the heat exchanger 22a is decompressed by the outdoor expansion valve 22v and the indoor expansion valve 21v, and is supplied to the heat exchanger 21a. Then, in the heat exchanger 21a, the refrigerant RF exchanges heat with the intake air IA, thereby cooling the intake air IA. The cooled intake air IA is discharged into the target space RM as temperature-controlled air CA. The refrigerant RF that has undergone heat exchange in the heat exchanger 21a passes through the four-way valve 22d, and is sucked into the compressor 22b where it is compressed.

[0073] Next, a heating operation in which the air conditioner 20 heats the target space RM will be described. When the air conditioner 20 is in heating operation in which it heats the target space RM, the control circuit 22c controls the four-way valve 22d so that the refrigerant RF discharged from the compressor 22b flows to the heat exchanger 21a. The high-pressure refrigerant RF discharged from the compressor 22b passes through the four-way valve 22d and is supplied to the heat exchanger 21a. The refrigerant RF supplied to the heat exchanger 21a exchanges heat with the intake air IA in the heat exchanger 21a. Then, in the heat exchanger 21a, the refrigerant RF exchanges heat with the intake air IA, heating the intake air IA. The heated intake air IA is discharged to the target space RM as temperature-controlled air CA. The refrigerant RF that has exchanged heat in the heat exchanger 21a is depressurized by the indoor expansion valve 21v and the outdoor expansion valve 22v, and is supplied to the heat exchanger 22a. Then, in the heat exchanger 22a, the refrigerant RF exchanges heat. The refrigerant RF that has undergone heat exchange in the heat exchanger 22a passes through the four-way valve 22d, and is sucked into the compressor 22b where it is compressed.

[0074] (Air purifier 30) The air purifier 30 purifies the air in the target space RM. The air purifier 30 purifies intake air DA drawn in from the target space RM and exhausts it to the target space RM as clean air PA.

[0075] The air purifier 30 includes a fan 30f, a filter 30p, a thermometer 30t, and a control circuit 30c.

[0076] The fan 30f draws the intake air DA in the target space RM into the air purifier 30. The fan 30f then discharges the drawn intake air DA to the filter 30p.

[0077] The filter 30p captures dust and other particles contained in the intake air DA supplied from the fan 30f to purify the intake air DA. The air discharged from the filter 30p is then discharged to the outside of the air purifier 30 as purified air PA.

[0078] The filter 30p is, for example, a HEPA (High Efficiency Particulate Air) filter. The filter 30p may also be, for example, a ULPA (Ultra Low Penetration Air) filter, a high-performance filter lower in rank than a HEPA filter, or a filter made of high-density nonwoven fabric. The filter 30p may also be an electrostatic filter of an electric dust collection type. Furthermore, the filter 30p may also include, for example, a deodorizing filter.

[0079] The thermometer 30t detects the temperature of the purified air PA. The temperature of the purified air PA measured by the thermometer 30t is output to the control circuit 30c. The thermometer 30t may also detect the temperature of the intake air DA. The air purifier 30 detects the temperature of the target space RM by detecting the temperature of the purified air PA or the intake air DA using the thermometer 30t.

[0080] The control circuit 30c controls the air purifier 30. The control circuit 30c controls the fan 30f. The control circuit 30c also acquires measurement results from the thermometer 30t. The control circuit 30c also communicates with the control device 40.

[0081] (Control device 40) The control device 40 controls each of the ventilation device 10, the air conditioner 20, and the air purifier 30. Fig. 3 is a hardware configuration diagram showing the hardware configuration of the control device 40 provided in the air conditioning system 1, which is an example of the air conditioning system according to this embodiment.

[0082] The control device 40 includes a control unit 41, a RAM (Random Access Memory) 42, and a ROM (Read Only Memory) 43. The control device 40 also includes a storage I / F (Interface) 44 and an external I / F 45. The control unit 41, the RAM 42, the ROM 43, the storage I / F 44, and the external I / F 45 are each connected to a bus B1.

[0083] For example, a storage medium 44a is connected to the storage I / F 44. For example, the ventilation device 10, the air conditioner 20, and the air purifier 30 are connected to the external I / F 45.

[0084] The control unit 41 is a processor such as a CPU (Central Processing Unit) or an MPU (Micro Processing Unit). The control unit 41 may be an ASIC (Application Specific Integrated Circuit) or an FPGA (Field-Programmable Gate Array). The control unit 41 executes a program to perform each process described in this specification. The control unit 41 is a computing device that reads a program (app, application) from a storage device such as the ROM 43 or a storage medium 44a onto the RAM 42 and executes the process. The control unit 41, the RAM 42, and the ROM 43 constitute a computer that controls the air conditioning system 1.

[0085] The RAM 42 is a volatile semiconductor memory that temporarily stores, for example, programs (applications) and the like.

[0086] The ROM 43 is, for example, a non-volatile semiconductor memory that can retain programs (apps, applications) even when the power is turned off. The ROM 43 stores programs such as the BIOS (Basic Input / Output System) that is executed at startup, and various settings such as OS (Operating System) settings and network settings.

[0087] The storage I / F 44 is an interface with an external storage device such as a storage medium 44a.

[0088] The storage medium 44a is, for example, a Secure Digital (SD) memory card, a Universal Serial Bus (USB) memory, a Hard Disk Drive (HDD), or a Solid State Drive (SSD).

[0089] The external I / F 45 is an interface that connects the control unit 41 with each of the ventilation device 10 and the air conditioner 20. The control unit 41 connects with each of the ventilation device 10, the air conditioner 20, and the air purifier 30 via the external I / F 45.

[0090] When a first temperature T1 measured by the thermometer 21t1 satisfies a first predetermined condition, the control unit 41 controls the fan 21f provided in the indoor unit 21 to stop. Furthermore, while the fan 21f is stopped, the control unit 41 determines whether a second temperature T2 measured by a thermometer in the air processing device in which the fan is operating satisfies a second predetermined condition. Then, when the second temperature T2 satisfies the second predetermined condition, the control unit 41 controls the fan 21f provided in the indoor unit 21 to resume operation.

[0091] The processing of the control unit in the air conditioning system according to this embodiment will be described in detail. By describing the processing of the control unit in the air conditioning system according to this embodiment, the control method for the air conditioning system according to this embodiment and the steps or procedures of the program executed by a computer that controls the air conditioning system will be described. Furthermore, by describing the processing of the control unit in the air conditioning system according to this embodiment, the processing of the control device that controls the air conditioning system will be described.

[0092] The processing in the air conditioning system according to this embodiment will be described using the air conditioning system 1, which is an example of the air conditioning system according to this embodiment. Fig. 4 is a flow diagram illustrating the processing in the air conditioning system 1, which is an example of the air conditioning system according to this embodiment.

[0093] (Step S10) First, the control unit 41 determines whether the indoor unit 21 satisfies a first predetermined condition. The first predetermined condition is a condition determined based on the relationship between the indoor temperature and the target temperature of the air conditioner 20. For example, when the air conditioner 20 is in cooling operation, the condition is that "the indoor temperature becomes lower than the target temperature." When the first predetermined condition is satisfied, the indoor unit 21 transitions to a so-called thermo-off state.

[0094] The control unit 41 acquires the temperature in the indoor unit 21 from each of the multiple indoor units 21. The control circuit 21c of the indoor unit 21 detects the temperature using the thermometer 21t1. The control circuit 21c then transmits the temperature detected by the thermometer 21t1 to the control unit 41.

[0095] The control unit 41 determines whether the temperature in the indoor unit 21 satisfies a first predetermined condition, for example, a thermo-off condition. If the temperature in the indoor unit 21 satisfies the first predetermined condition (YES in step S10), the control unit 41 proceeds to step S20. If the first predetermined condition is not satisfied (NO in step S10), the control unit 41 returns to step S10 and repeats the process.

[0096] If the air conditioning system 1 includes a plurality of indoor units 21, the control unit 41 performs the process of step S10 for each of the plurality of indoor units 21.

[0097] (Step S20) If the temperature in the indoor unit 21 satisfies the first predetermined condition (YES in step S10), the control unit 41 controls the air conditioner 20 to reduce or stop the supply of refrigerant to the indoor unit 21 that satisfies the first predetermined condition. Specifically, the control circuit 21c of the indoor unit 21 controls the indoor expansion valve 21v to reduce the opening. As a result, the indoor unit 21 enters a so-called thermo-off state. The indoor unit 21 that satisfies the first predetermined condition is referred to as indoor unit A.

[0098] (Step S25) Next, the control unit 41 determines whether the indoor unit 21 (indoor unit A) that satisfies the first predetermined condition has been set as the representative unit. The representative unit setting is, for example, a setting for specifying the indoor unit 21 that will operate the fan 21f preferentially among the multiple indoor units 21. The indoor unit 21 that has been set as the representative unit operates the fan 21f even when the thermostat is off. The representative unit setting is set in advance by a user input operation or the like.

[0099] If indoor unit A is not set as the representative unit (YES in step S25), the control unit 41 proceeds to step S30. If indoor unit A is set as the priority unit (NO in step S25), the control unit 41 proceeds to step S180.

[0100] (Step S30) Next, the control unit 41 determines whether there is a ventilation device 10 or an air purifier 30 whose fan is operating. The control unit 41 determines that the fan is operating when each of the ventilation devices 10 and each of the air purifiers 30 are operating. The control circuit 10c of the ventilation device 10 transmits the operating status of the ventilation device 10 or the operating state of the fan 10f1 to the control unit 41. In addition, the control circuit 30c of the air purifier 30 transmits the operating status of the air purifier 30 or the operating state of the fan 30f to the control unit 41.

[0101] If there is a ventilation device 10 or an air purifier 30 with an operating fan (YES in step S30), the control unit 41 proceeds to step S40. If there is no ventilation device 10 or air purifier 30 with an operating fan (NO in step S30), the control unit 41 proceeds to step S110.

[0102] (Step S40) If there is a ventilation device 10 or air purifier 30 whose fan is operating (YES in step S30), the control unit 41 controls the air conditioner 20 to stop the fan 21f of the indoor unit 21 (indoor unit A) that satisfies the first predetermined condition. As a result, the operation of indoor unit A is stopped.

[0103] (Step S50) Then, the control unit 41 acquires the temperature from the thermometer in the ventilation device 10 or the air purifier 30 whose fan is operating. Specifically, the control unit 41 acquires the temperature from the thermometer 10t of the ventilation device 10 whose fan 10f1 is operating. The control unit 41 also acquires the temperature from the thermometer 30t of the air purifier 30 whose fan 30f is operating.

[0104] For example, if there are multiple ventilation devices 10 and air purifiers 30 with operating fans, the control unit 41 may acquire measurement results from the thermometers of each of the multiple ventilation devices 10 and air purifiers 30. The control unit 41 may then average the acquired measurement results and perform processing using the average value. In other words, the control unit 41 may perform the subsequent steps S60 and S70 using the average value of the temperatures acquired from each of the multiple ventilation devices 10 and air purifiers 30, and control the fan 21f provided in the indoor unit 21 to resume operation.

[0105] (Step S60) Next, the control unit 41 reads the temperature from the thermometer in the ventilation device 10 or air purifier 30 whose fan is operating, and determines whether a second predetermined condition is met. The second predetermined condition is a condition determined based on the relationship between the indoor temperature and the target temperature of the air conditioner 20. For example, when the air conditioner 20 is in cooling operation, the condition is that "the indoor temperature becomes higher than the target temperature." When the indoor unit 21 meets the second predetermined condition, the air conditioner A transitions to a so-called thermo-on state.

[0106] The control unit 41 determines whether the temperature in the ventilation device 10 or the air purifier 30 in which the fan is operating satisfies a second predetermined condition, for example, a thermo-on condition. If the second predetermined condition is satisfied (YES in step S60), the control unit 41 proceeds to step S70. If the second predetermined condition is not satisfied (NO in step S60), the control unit 41 returns to step S50 and repeats the process.

[0107] (Step S70) In step S40, the control unit 41 resumes the operation of the indoor unit 21 (indoor unit A) that has stopped operating. Specifically, the control unit 41 controls the air conditioner 20 to operate the fan 21f and to supply the refrigerant RF to the indoor unit 21 that has stopped operating.

[0108] (Step S80) The control unit 41 determines whether or not to stop the operation. If the operation is to be stopped (YES in step S80), the control unit 41 ends the process. If the operation is not to be stopped (NO in step S80), the control unit 41 returns to step S10 and repeats the process.

[0109] As described above, the air conditioning system 1 has the effect of reducing the power consumption of the indoor unit 21 by stopping the fan 21f provided in the indoor unit 21.

[0110] <When there is no ventilation device or air purifier with a fan running> (Step S110) If there is no ventilation device 10 or air purifier 30 with an operating fan (NO in step S30), the control unit 41 determines whether there is any other indoor unit 21 (an example of a second indoor unit) that does not satisfy the first predetermined condition. The other indoor unit 21 that does not satisfy the first predetermined condition will be referred to as indoor unit B.

[0111] If there is another indoor unit 21 (indoor unit B) that does not satisfy the first predetermined condition (YES in step S110), the control unit 41 proceeds to step S120. If there is no other indoor unit 21 (indoor unit B) that does not satisfy the first predetermined condition (NO in step S110), the control unit 41 proceeds to step S150.

[0112] (Step S120) If there are other indoor units 21 that do not satisfy the first predetermined condition (YES in step S110), the control unit 41 controls the air conditioner 20 to stop the fan of the indoor unit 21 (indoor unit A) that satisfies the first predetermined condition.

[0113] (Step S130) The control unit 41 acquires the temperature from the thermometer 21t1 in the other indoor unit 21 (indoor unit B) that does not satisfy the first predetermined condition.

[0114] For example, if there are multiple other indoor units 21 (indoor unit B) that do not satisfy the first predetermined condition, i.e., if there are multiple other indoor units 21 with their fans operating, the control unit 41 may acquire measurement results from the thermometer 21t1 from each of the multiple other indoor units 21. The control unit 41 may then average the acquired measurement results and perform processing using the average value. In other words, the control unit 41 may process the subsequent steps S140 and S70 using the average value of the temperatures acquired from each of the multiple other indoor units 21. In other words, the control unit 41 may control the fan 21f provided in the indoor unit 21 that satisfied the first predetermined condition and stopped its fan to resume operation, using the average value of the temperatures acquired from each of the multiple other indoor units 21.

[0115] (Step S140) Next, the control unit 41 reads the temperature from the thermometer 21t1 in another indoor unit 21 (indoor unit B) that does not satisfy the first predetermined condition, and determines whether or not it satisfies a second predetermined condition, for example, a thermo-on condition.

[0116] The control unit 41 determines whether the temperature on the thermometer 21t1 of another indoor unit 21 (indoor unit B) that does not satisfy the first predetermined condition satisfies a second predetermined condition, for example, a thermo-on condition. If the second predetermined condition is satisfied (YES in step S140), the control unit 41 proceeds to step S70. If the second predetermined condition is not satisfied (NO in step S140), the control unit 41 returns to step S130 and repeats the process.

[0117] In the indoor units 21 that do not satisfy the first predetermined condition, the fan 21f is operating. Therefore, the indoor units 21 that do not satisfy the first predetermined condition are indoor units 21 that have the fan 21f operating, and the temperature of the target space RM can be accurately measured by the thermometer 21t1.

[0118] <<When there are no other indoor units 21 that do not satisfy the first predetermined condition>> (Step S150) If there are no other indoor units 21 that do not satisfy the first predetermined condition (NO in step S110), the control unit identifies a representative indoor unit from among the other multiple indoor units 21, and controls the fans 21f of the indoor units 21 other than the representative indoor unit to stop. For example, the control unit 41 determines whether there are other indoor units 21 among the other indoor units 21 that satisfy the first predetermined condition whose fan 21f has less power consumption than indoor unit A. Among the other indoor units 21 that satisfy the first predetermined condition, another indoor unit 21 whose fan 21f has less power consumption than indoor unit A will be referred to as indoor unit C. If there are other indoor units 21 among the other indoor units 21 that satisfy the first predetermined condition whose fan 21f has less power consumption than indoor unit A (YES in step S150), the control unit 41 proceeds to step S152. If there are no other indoor units 21 among the other indoor units 21 that satisfy the first predetermined condition whose fan 21f has less power consumption than indoor unit A (NO in step S150), the control unit 41 proceeds to step S180.

[0119] If there are multiple other indoor units 21 with low power consumption of the fans 21f among the other indoor units 21 that satisfy the first predetermined condition, for example, the other indoor unit 21 with the lowest power consumption may be selected.

[0120] (Step S152) If there is another indoor unit 21 (indoor unit C) among the other indoor units 21 that satisfy the first predetermined condition, and the power consumption of the fan 21f is less than that of indoor unit A (YES in step S150), the control unit 41 controls the air conditioner 20 to operate the fan of indoor unit C.

[0121] (Step S180) If there is no indoor unit 21 whose fan 21f power consumption is less than that of indoor unit A among the other indoor units 21 that satisfy the first predetermined condition (NO in step S150), the control unit 41 acquires the temperature from the thermometer 21t1 in the indoor unit 21 (indoor unit A) that satisfies the first predetermined condition. Here, the indoor unit 21 (indoor unit A) that satisfies the first predetermined condition is set to a state in which the fan 21f is operating.

[0122] This identifies the representative indoor unit when all indoor units 21 satisfy the first predetermined condition, and operates only the fan 21f of the identified indoor unit 21. The processing of step S180 is also performed when indoor unit A is set as the representative unit in step S25.

[0123] (Step S154) If indoor unit C is the representative indoor unit, the control unit 41 controls the air conditioner 20 to stop the fan of indoor unit A in addition to the processing of step S152.

[0124] (Step S160) The control unit 41 acquires the temperature from the thermometer 21t1 in another indoor unit 21 (indoor unit C) whose fan 21f consumes less power than indoor unit A among the other indoor units 21 that satisfy the first predetermined condition.

[0125] (Step S170) Next, the control unit 41 reads the temperature from the thermometer 21t1 in another indoor unit 21 (indoor unit C) among the other indoor units 21 that satisfy the first predetermined condition and whose fan 21f consumes less power than indoor unit A, and determines whether the second predetermined condition, for example, the thermo-on condition, is satisfied.

[0126] The control unit 41 determines whether the temperature on the thermometer 21t1 of another indoor unit 21 (indoor unit C) that satisfies the first predetermined condition satisfies a second predetermined condition, for example, a thermo-on condition. If the second predetermined condition is satisfied (YES in step S170), the control unit 41 proceeds to step S70. If the second predetermined condition is not satisfied (NO in step S170), the control unit 41 returns to step S160 and repeats the process.

[0127] (Step S190) When indoor unit A is the representative indoor unit, the control unit 41 reads the temperature from the thermometer 21t1 in the indoor unit 21 (indoor unit A) that satisfies the first predetermined condition, and determines whether or not it satisfies a second predetermined condition, for example, a thermo-on condition.

[0128] The control unit 41 determines whether the temperature on the thermometer 21t1 in the indoor unit 21 (indoor unit A) that satisfies the first predetermined condition satisfies a second predetermined condition, for example, a thermo-on condition. If the second predetermined condition is satisfied (YES in step S190), the control unit 41 proceeds to step S70. If the second predetermined condition is not satisfied (NO in step S190), the control unit 41 returns to step S180 and repeats the process.

[0129] When the indoor unit 21 of the air conditioner 20 satisfies a first predetermined condition, the indoor unit 21 of the air conditioner 20 stops operating. However, when the indoor unit 21 of the air conditioner 20 stops operating, the fan 21f continues to operate in order to accurately measure the temperature in the target space RM. When the fan 21f is operated, power is consumed to operate the fan 21f. Furthermore, when the fan 21f is stopped, the temperature in the target space RM cannot be measured correctly due to the influence of the temperature inside the indoor unit 21.

[0130] The air conditioning system according to this embodiment controls the air conditioning device using the temperature measurement results of the target space in the air processing device with the fan operating. By controlling the air conditioning device using the temperature measurement results of the target space in the air processing device with the fan operating, the air conditioning system according to this embodiment can accurately measure the temperature of the target space even if the fan in the indoor unit stops operating when the air conditioning device's thermostat is turned off. The air conditioning system according to this embodiment can reduce power consumption by stopping the fan in the indoor unit when the thermostat is turned off.

[0131] In steps S110 and S150, if there are multiple target indoor units 21 (indoor units B or indoor units C), the control unit 41 may obtain the temperature using a thermometer provided in the target indoor unit 21 with the lowest power consumption.

[0132] (Variation 1) For example, the process when the fans of all the ventilation devices 10, air purifiers 30, and other indoor units 21 in the air conditioning system are not operating (e.g., NO in step S110) will be described. When the fans of all the ventilation devices 10, air purifiers 30, and other indoor units 21 are not operating, the control unit 41 may operate the fans of any of the ventilation devices 10, air purifiers 30, and other indoor units 21. The control unit 41 may then perform the process using the thermometers of the operating ventilation devices 10, air purifiers 30, and other indoor units 21. Alternatively, the control unit 41 may calculate the power consumption when the fans of the air processing devices are operated, and perform the process using the thermometer provided in the air processing device with the lowest power consumption.

[0133] (Variation 2) A case where fans of multiple air processing devices are operating in step S50 or step S130 will be described. Fig. 5 is a diagram illustrating the positional relationship between the indoor unit 21, the ventilation device 10, and the air purifier 30 in the process in the air conditioning system 1, which is an example of the air conditioning system according to this embodiment.

[0134] In step S50, if the fans of multiple air processing devices are operating, it is desirable to measure the temperature using the thermometer of the air processing device that is closest to the indoor unit that satisfies the first predetermined condition. When measuring the distance between the indoor unit 21 and the air processing device, for example, in the case of the ventilation device 10, it is desirable to set the distance between the indoor unit 21 and the ventilation device 10 as the distance between the indoor unit 21 and the position of the intake port 11 that draws in return air RA in the ventilation device 10.

[0135] Also, for example, if areas dividing the interior of the target space RM are set in advance, as shown in Figure 5, the air treatment device closest to the indoor unit that satisfies the first predetermined condition within the set area may be selected.

[0136] (Variation 3) In the target space RM, an air processing device in which a thermometer is installed 1.5 meters or less from the floor may be preferentially selected because the thermometer is located at a height close to where people are present. For example, if the thermometer 30t included in the air purifier 30 is installed 1.5 meters or less from the floor, the control unit 41 may perform processing using the measurement results measured by the thermometer 30t included in the air purifier 30.

[0137] <Indoor unit operation resumes> An example of the processing when the operation is resumed in step S70 will be described. Fig. 6 is a flow diagram illustrating the processing in the air conditioning system 1, which is an example of the air conditioning system according to this embodiment. Here, the case of cooling will be described.

[0138] When the air conditioner A resumes operation through the processing of step S70, it operates with the temperature of the target space RM detected by the thermometer (10t, 21t, 30t) provided in the air treatment device (10, 21, 30) that was used to determine whether to resume operation as the set temperature.

[0139] (Step S210) First, the control unit 41 determines whether the temperature of the target space RM detected by the thermometer (10t, 21t, 30t) provided in the air treatment device (10, 21, 30) is equal to or greater than a first threshold. The first threshold is, for example, a temperature that is significantly higher than the target temperature. If the temperature is equal to or greater than the first threshold (YES in step S210), the control unit 41 proceeds to step S220. If the temperature is less than the first threshold (NO in step S210), the control unit 41 proceeds to step S240.

[0140] (Step S220) If the temperature is equal to or higher than the first threshold value (YES in step S210), the control unit 41 lowers the set temperature of the indoor unit 21 by a predetermined value.

[0141] (Step S230) The control unit 41 waits for a predetermined time, and then returns to step S210 to repeat the process.

[0142] (Step S240) If the temperature is less than the first threshold (NO in step S210), the control unit 41 determines whether the temperature is less than the first threshold and greater than or equal to the second threshold. The second threshold is, for example, a temperature higher than the target temperature and lower than the first threshold. If the temperature is less than the first threshold and greater than or equal to the second threshold (YES in step S240), the control unit 41 proceeds to step S250. If the temperature is less than the second threshold (NO in step S240), the control unit 41 proceeds to step S260.

[0143] (Step S250) The control unit 41 maintains the set temperature at the current setting. Then, the control unit 41 advances the process to step S230.

[0144] (Step S260) The control unit 41 changes the set temperature to the set temperature that was set when the air conditioner was operating before the operation was restarted, and then the control unit 41 ends the process.

[0145] In Figure 4, if the fan of indoor unit A is stopped, a situation will likely occur in which the temperature inside indoor unit A differs from the temperature of the target space RM. Therefore, if the thermometer of indoor unit A is used to operate indoor unit A when the operation of indoor unit A resumes, the first predetermined condition will immediately be met and the fan will stop again.

[0146] Therefore, by changing the set temperature of the indoor unit A as described above, it is possible to maintain an appropriate temperature in the target space RM without frequently stopping the operation of the indoor unit A.

[0147] FIG. 7 is a flow diagram illustrating another example of processing when restarting the operation of an air conditioner.

[0148] (Step S310) First, the control unit 41 determines whether the operation mode is heating operation. If the operation mode is heating operation (YES in step S310), the control unit 41 proceeds to step S320. If the operation mode is not heating operation (NO in step S310), the control unit 41 proceeds to step S340.

[0149] (Step S320) If the operation mode is heating operation (YES in step S310), the control unit 41 determines whether the airflow direction change setting is enabled. If the airflow direction change setting is enabled (YES in step S320), the control unit 41 proceeds to step S330. If the airflow direction change setting is not enabled (NO in step S330), the control unit 41 proceeds to step S340.

[0150] (Step S330) The control unit 41 changes the airflow direction downward.

[0151] (Step S340) The control unit 41 controls the indoor unit 21 so that it performs air blowing operation at a high setting for a predetermined time.

[0152] (Step S350) The control unit 41 controls the indoor unit 21 to transition to normal operation.

[0153] In Figure 4, if the fan of indoor unit A is stopped, a situation will likely occur in which the temperature inside indoor unit A differs from the temperature of the target space RM. Therefore, if the thermometer of indoor unit A is used to operate indoor unit A when the operation of indoor unit A resumes, the first predetermined condition will immediately be met and the fan will stop again.

[0154] Therefore, by performing the air blowing operation by the indoor unit A as described above, the temperature of the target space RM can be maintained at an appropriate level without frequently stopping the operation of the indoor unit A.

[0155] Furthermore, immediately after the operation of the indoor unit 21 is resumed, the temperature measurement by the thermometer 21t1 of the indoor unit 21 may not be accurate due to the influence of the time when the indoor unit 21 was stopped. Therefore, until a predetermined time has elapsed, control may be performed using the measurement results (third temperature) of the thermometer of the air processing device used in steps S50, S130, and S160. By controlling using the third temperature until the predetermined time has elapsed, control can be performed using the correct temperature measurement value.

[0156] In the above example, the control device in the air conditioning system according to this embodiment executes the processing in this embodiment, but the above processing may also be executed in a control circuit in, for example, a ventilation device or an air conditioning device.

[0157] Although the embodiments have been described above, it will be understood that various changes in form and details are possible without departing from the spirit and scope of the claims. Various modifications and improvements, such as combinations and substitutions with part or all of other embodiments, are possible. [Explanation of symbols]

[0158] 1. Air conditioning system 10. Ventilation equipment 10c Control circuit 10f1, 10f2 fans 10t thermometer 20 Air conditioner 20c Control circuit 20r refrigerant circuit 21 Indoor unit 21a heat exchanger 21f Fan 21t1, 21t2 thermometer 22 Outdoor unit 30. Air Purifier 30c Control circuit 30f fan 30t thermometer 40 Control device 41 Control Unit

Claims

1. an indoor unit (21) that includes a first fan (21f), a first thermometer (21t1), and a refrigerant circuit (20r) including a heat exchanger (21a), and that performs a cooling operation or a heating operation for a target space (RM); an air treatment device (10, 21, 30) including a second fan (10f1, 21f, 30f) and a second thermometer (10t, 21t1, 30t) for measuring the temperature in the target space (RM); a control unit (41) that controls the first fan (21f) included in the indoor unit (21) to stop when a first temperature measured by the first thermometer (21t1) satisfies a first predetermined condition, and controls the first fan (21f) included in the indoor unit (21) to resume operation when a second temperature measured by the second thermometer (10t, 21t1, 30t) in the air processing device (10, 21, 30) in which the second fan (10f1, 21f, 30f) is operating while the first fan (21f) is stopped satisfies a second predetermined condition; Equipped with Air conditioning system (1).

2. A plurality of the air treatment devices (10, 21, 30) are provided, When an average value of the second temperatures acquired from each of the plurality of air treatment devices (10, 21, 30) satisfies the second predetermined condition, the control unit (41) controls the first fan (21f) of the indoor unit (21) to resume operation. An air conditioning system (1) according to claim 1.

3. A plurality of the air treatment devices (10, 21, 30) are provided, When the second temperature measured by the second thermometer (10t, 21t1, 30t) provided in the air processing device (10, 21, 30) that is closest to the indoor unit (21) among the plurality of air processing devices (10, 21, 30) satisfies the second predetermined condition, the control unit (41) controls the first fan (21f) provided in the indoor unit (21) to resume operation. An air conditioning system (1) according to claim 1.

4. A plurality of the air treatment devices (10, 21, 30) are provided, The control unit (41) controls the first fan (21f) of the indoor unit (21) to resume operation when the second temperature measured by the second thermometer (30t), which is provided in the plurality of air processing devices (10, 21, 30) and is located 1.5 meters or less from the floor, satisfies the second predetermined condition. An air conditioning system (1) according to claim 1.

5. The air treatment device (10, 21, 30) is a ventilation device (10), When the second fan (10f1) of the ventilation device (10) is operating, the control unit (41) controls the first fan (21f) of the indoor unit (21) to resume operation when the second temperature measured by the second thermometer (10t) of the ventilation device (10) satisfies the second predetermined condition. An air conditioning system (1) according to claim 1.

6. The air treatment device (10, 21, 30) is an air purifier (30), When the second fan (30f) included in the air purifier (30) is operating, the control unit (41) controls the first fan (21f) included in the indoor unit (21) to resume operation when the second temperature measured by the second thermometer (30t) included in the air purifier (30) satisfies the second predetermined condition. An air conditioning system (1) according to claim 1.

7. A plurality of the air treatment devices (10, 21, 30) are provided, Each of the plurality of air treatment devices (10, 21, 30) is a second indoor unit (21), When the second temperature measured by the second thermometer (21t1) in the second indoor unit (21) in which the second fan (21f) is operating satisfies the second predetermined condition, the control unit (41) controls the first fan (21f) included in the indoor unit (21) to resume operation. An air conditioning system (1) according to claim 1.

8. A plurality of the air treatment devices (10, 21, 30) are provided, When all of the second fans (10f1, 21f, 30f) are not operating in the plurality of air processing devices (10, 21, 30), the control unit (41) operates the second fan (10f1, 21f, 30f) of any of the air processing devices (10, 21, 30), and when the second temperature measured by the second thermometer (10t, 21t1, 30t) in the air processing device (10, 21, 30) including the operating second fan (10f1, 21f, 30f) satisfies the second predetermined condition, controls to resume operation of the first fan (21f) included in the indoor unit (21). An air conditioning system (1) according to claim 1.

9. A plurality of the air treatment devices (10, 21, 30) are provided, Each of the plurality of air treatment devices (10, 21, 30) is a second indoor unit (21), When the indoor unit (21) and all of the plurality of second indoor units (21) satisfy a first predetermined condition, The control unit (41) identifies a representative indoor unit (21) from among the indoor unit (21) and the plurality of second indoor units (21), stops the fans (21f) of the indoor units (21) other than the representative indoor unit (21), and controls the fans (21f) of the indoor units (21) other than the representative indoor unit (21) to resume operation when the second temperature measured by the thermometer (21t1) provided in the representative indoor unit (21) satisfies the second predetermined condition. An air conditioning system (1) according to claim 1.

10. The control unit (41) calculates the power consumption when the second fans (10f1, 21f, 30f) provided in each of the plurality of air treatment devices (10, 21, 30) are operated, and when the second temperature measured by the second thermometer (10t, 21t1, 30t) provided in the air treatment device (10, 21, 30) having the lowest power consumption satisfies the second predetermined condition, controls the first fan (21f) provided in the indoor unit (21) to resume operation. An air conditioning system (1) according to claim 8.

11. The control unit (41) controls the first fan (21f) included in the indoor unit (21) so as to operate the first fan (21f) continuously for a predetermined period after restarting the operation of the first fan (21f). An air conditioning system (1) according to any one of claims 1 to 10.

12. The control unit (41) controls the indoor unit (21) based on a third temperature measured by the second thermometer (10t, 21t1, 30t) provided in the air treatment device (10, 21, 30) during a predetermined period after restarting the operation of the first fan (21f) provided in the indoor unit (21). An air conditioning system (1) according to any one of claims 1 to 10.

13. A control method for an air conditioning system (1) including an indoor unit (21) that is equipped with a refrigerant circuit (20c) including a first fan (21f), a first thermometer (21t1), and a heat exchanger (21a) and performs a cooling operation or a heating operation for a target space (RM), and an air processing device (10, 21, 30) that is equipped with second fans (10f1, 21f, 30f) and second thermometers (10t, 21t1, 30t) that measure a temperature in the target space (RM), controlling the first fan (21f) of the indoor unit (21) to stop when a first temperature measured by the first thermometer (21t1) satisfies a first predetermined condition; a step of controlling the first fan (21f) of the indoor unit (21) to resume operation when a second temperature measured by the second thermometer (10t, 21t1, 30t) in the air treatment device (10, 21, 30) in which the second fan (10f1, 21f, 30f) is operating satisfies a second predetermined condition while the first fan (21f) is stopped; Including, A method for controlling an air conditioning system (1).

14. a computer (41, 42, 43) for controlling an air conditioning system (1) including an indoor unit (21) that includes a first fan (21f), a first thermometer (21t1), and a refrigerant circuit (20c) including a heat exchanger (21a) and performs cooling or heating operation on a target space (RM), and an air processing device (10, 21, 30) that includes second fans (10f1, 21f, 30f) and second thermometers (10t, 21t1, 30t) that measure the temperature in the target space (RM); a step of controlling the first fan (21f) of the indoor unit (21) to stop when a first temperature measured by the first thermometer (21t1) satisfies a first predetermined condition; a control procedure for restarting operation of the first fan (21f) provided in the indoor unit (21) when a second temperature measured by the second thermometer (10t, 21t1, 30t) in the air treatment device (10, 21, 30) in which the second fan (10f1, 21f, 30f) is operating satisfies a second predetermined condition while the first fan (21f) is stopped; A program to execute.

15. A control device for controlling an air conditioning system (1) including an indoor unit (21) that is equipped with a first fan (21f), a first thermometer (21t1), and a refrigerant circuit (20c) including a heat exchanger (21a) and performs a cooling operation or a heating operation for a target space (RM), and an air processing device (10, 21, 30) that is equipped with second fans (10f1, 21f, 30f) and second thermometers (10t, 21t1, 30t) that measure a temperature in the target space (RM), When a first temperature measured by the first thermometer (21t1) satisfies a first predetermined condition, the first fan (21f) provided in the indoor unit (21) is controlled to be stopped, and when a second temperature measured by the second thermometer (10t, 21t1, 30t) in the air treatment device (10, 21, 30) in which the second fan (10f1, 21f, 30f) is operating while the first fan (21f) is stopped satisfies a second predetermined condition, the operation of the first fan (21f) provided in the indoor unit (21) is controlled to be resumed. A control device (40).

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