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

Abstract

The present disclosure provides a technique for controlling a target space to an appropriate temperature and humidity by causing a humidifier and an air conditioner to operate in cooperation with each other in an air conditioning system including the humidifier and the air conditioner.SOLUTION: An air conditioning system comprising: a humidifier configured to perform a humidifying operation to humidify a target space based on a humidity of the target space; an air conditioner configured to perform a heating operation to heat the target space or a cooling operation to cool the target space based on a temperature of the target space; and a controller configured to control the cooling operation of the air conditioner based on the humidity of the target space when the humidifier is performing the humidifying operation and the temperature of the target space is equal to or greater than a set temperature.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 air conditioning system including temperature sensors that measure the temperature of each of a plurality of rooms in a building, air conditioners that condition each of the rooms, and humidity sensors that measure the humidity near the air conditioner's air intake. Patent Document 1 also discloses that the air conditioner in the air conditioning system includes a determination means that determines an operation mode based on the difference between the temperature measured by the temperature sensor and a target temperature, and the difference between the humidity measured by the humidity sensor and the target humidity. Patent Document 1 also discloses that the air conditioner operates by switching to one of the following operation modes: cooling, dehumidification, humidification, ventilation, and heating. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-188811 Summary of the Invention [Problem to be solved by the invention]

[0004] In an air conditioning system equipped with a humidifier and an air conditioner, the humidifier and the air conditioner may operate simultaneously, making it impossible to control the temperature and humidity of a target space to appropriate levels.

[0005] The present disclosure provides a technique for controlling a target space to an appropriate temperature and humidity by operating the humidifier and air conditioner in coordination in an air conditioning system including the humidifier and air conditioner. [Means for solving the problem]

[0006] The first aspect of the air conditioning system is a humidifier that performs a humidification operation to humidify the target space based on the humidity of the target space; an air conditioning device that performs a heating operation to heat the target space or a cooling operation to cool the target space based on the temperature of the target space; a control unit that controls a cooling operation of the air conditioner based on the humidity of the target space when the humidifier is in a humidifying operation and the temperature of the target space is equal to or higher than a set temperature; Equipped with It is an air conditioning system.

[0007] According to the air conditioning system of the first aspect, the humidifier and the air conditioner are operated in coordination to maintain the target space at an appropriate temperature and humidity.

[0008] The second aspect of the air conditioning system is When the humidity in the target space is equal to or lower than a target humidity, the control unit controls the humidifier to perform a humidifying operation and controls the air conditioner to switch to a cooling operation. This is the first perspective of the air conditioning system.

[0009] According to the air conditioning system of the second aspect, the temperature of the target space can be lowered by the cooling operation of the air conditioner while the humidity of the target space is increased by the humidifying operation of the humidifier.

[0010] The third perspective of the air conditioning system is When the humidity in the target space is equal to or lower than a target humidity, the control unit controls the air conditioner to switch to a cooling operation in which an evaporation temperature in the air conditioner is equal to or higher than a dew point temperature. This is the second perspective of the air conditioning system.

[0011] According to the air conditioning system of the third aspect, by switching the air conditioner to cooling operation at a temperature equal to or higher than the dew point, the cooling operation can be continued without dehumidifying the air humidified by the humidifier.

[0012] The fourth perspective of the air conditioning system is The control unit controls the humidifier to perform humidifying operation and the air conditioner to switch to cooling operation when the humidity in the target space is equal to or lower than a target humidity in a state where humidity priority control is set, which prioritizes humidity between the temperature and humidity of the target space. An air conditioning system according to the second or third aspect.

[0013] According to the air conditioning system of the fourth aspect, when humidity-priority control is selected, the temperature of the target space can be lowered by cooling operation of the air conditioner while the humidity of the target space is increased by humidifying operation of the humidifier.

[0014] The fifth aspect of the air conditioning system is When the humidity in the target space is equal to or lower than a target humidity in a state in which the humidity priority control is not set, the control unit controls the humidifier to switch to a ventilation operation for ventilating the target space, and controls the air conditioner to switch to a cooling operation. This is the fourth perspective of the air conditioning system.

[0015] According to the air conditioning system of the fifth aspect, when humidity-priority control is not selected, the humidifier is switched to ventilation operation, thereby making it possible to suppress a temperature rise that would otherwise accompany the humidifying operation of the humidifier.

[0016] The sixth aspect of the air conditioning system is The cooling operation includes a first cooling operation and a second cooling operation in which an evaporation temperature in the air conditioner is set to a dew point temperature or higher, The air conditioner is configured to perform heating operation when the room temperature is lower than a first temperature, and to perform the first cooling operation when the room temperature is equal to or higher than the first temperature, The control unit When the humidity in the target space is equal to or lower than a target humidity and the set temperature is equal to or higher than the first temperature, control is performed to switch the air conditioner from the first cooling operation to the second cooling operation; When the humidity in the target space is equal to or lower than a target humidity and the set temperature is lower than the first temperature, the air conditioner is controlled to switch from a heating operation to the first cooling operation or the second cooling operation. The air conditioning system according to any one of the first aspect to the fifth aspect.

[0017] According to the air conditioning system of the sixth aspect, when the humidity in the target space is equal to or lower than the target humidity and the set temperature is equal to or higher than the first temperature, the air conditioning device is switched to cooling operation at a temperature equal to or higher than the dew point temperature, thereby allowing cooling operation to continue without dehumidifying the air humidified by the humidifier.

[0018] The seventh aspect of the air conditioning system is The cooling operation includes a first cooling operation and a second cooling operation in which an evaporation temperature in the air conditioner is set to a dew point temperature or higher, the air conditioner is configured to perform heating operation when the room temperature is lower than a second temperature, to perform the first cooling operation when the room temperature is equal to or higher than a third temperature, and to perform fan operation when the room temperature is equal to or higher than the second temperature and lower than the third temperature, The control unit When the humidity in the target space is equal to or lower than a target humidity and the set temperature is equal to or higher than the third temperature, the air conditioner is controlled to switch from the first cooling operation to the second cooling operation; When the humidity in the target space is equal to or lower than a target humidity and the set temperature is lower than the third temperature, the air conditioner is controlled to switch from the heating operation to the first cooling operation or the second cooling operation. The air conditioning system according to any one of the first aspect to the fifth aspect.

[0019] According to the air conditioning system of the seventh aspect, when the humidity in the target space is below the target humidity and the set temperature is above the third temperature, the air conditioning device is switched to cooling operation at a temperature above the dew point temperature, thereby allowing cooling operation to continue without dehumidifying the air humidified by the humidifier.

[0020] The eighth aspect of the air conditioning system is A plurality of the humidifying devices is provided, the control unit controls the operation states of the plurality of humidifiers based on a total value of minimum humidification capacities of the plurality of humidifiers and a required humidification amount for the target space. The air conditioning system according to any one of the first aspect to the fifth aspect.

[0021] According to the air conditioning system of the eighth aspect, when multiple humidifiers are present, the operating state of each humidification operation can be controlled based on the required humidification amount of the target space, thereby achieving energy savings while maintaining an appropriate humidity level in the target space.

[0022] A first aspect of the air conditioning system control method includes: a humidifier that performs a humidification operation to humidify the target space based on the humidity of the target space; an air conditioning apparatus that performs a heating operation to heat the target space or a cooling operation to cool the target space based on a temperature of the target space, When the humidifier is in humidifying operation and the temperature of the target space is equal to or higher than a set temperature, the cooling operation of the air conditioner is controlled based on the humidity of the target space. A method for controlling an air conditioning system.

[0023] According to the control method for an air conditioning system of the first aspect, the humidifier and the air conditioner are operated in coordination to maintain the target space at an appropriate temperature and humidity.

[0024] The first perspective program is A computer that controls an air conditioning system including a humidifier that performs a humidifying operation to humidify a target space based on the humidity of the target space, and an air conditioner that performs a heating operation to heat the target space or a cooling operation to cool the target space based on the temperature of the target space, This is a program for executing a procedure for controlling the cooling operation of the air conditioner based on the humidity of the target space when the humidifier is in humidifying operation and the temperature of the target space is above a set temperature.

[0025] According to the program of the first aspect, the humidifier and the air conditioner are operated in coordination to maintain the target space at an appropriate temperature and humidity.

[0026] A control device according to a first aspect includes: A control device for controlling an air conditioning system including a humidifier that performs a humidifying operation to humidify a target space based on the humidity of the target space, and an air conditioner that performs a heating operation to heat the target space or a cooling operation to cool the target space based on the temperature of the target space, When the humidifier is in humidifying operation and the temperature of the target space is equal to or higher than a set temperature, the cooling operation of the air conditioner is controlled based on the humidity of the target space. It is a control device.

[0027] According to the control device of the first aspect, the humidifier and the air conditioner are operated in coordination to maintain the target space at an appropriate temperature and humidity. [Brief explanation of the drawings]

[0028] [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 device provided in the air conditioning system according to this embodiment. [Figure 4] FIG. 4 is a diagram illustrating temperatures in the first process in the air conditioning system according to this embodiment. [Figure 5] FIG. 5 is a flow diagram illustrating the first process in the air conditioning system according to this embodiment. [Figure 6] FIG. 6 is a flow diagram illustrating the process of controlling the humidifier in the air conditioning system according to this embodiment. [Figure 7] FIG. 7 is a diagram illustrating the temperature in the second process in the air conditioning system according to this embodiment. [Figure 8] FIG. 8 is a flowchart illustrating the second process in the air conditioning system according to this embodiment. [Figure 9] FIG. 9 is a diagram illustrating temperatures in the third process in the air conditioning system according to this embodiment. [Figure 10] FIG. 10 is a flowchart illustrating the third process in the air conditioning system according to this embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0029] 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.

[0030] An air conditioning system according to the present embodiment will be described. The air conditioning system according to the present embodiment includes a humidifier that performs a humidifying operation to humidify a target space based on the humidity of the target space, and an air conditioner that performs a heating operation to heat the target space or a cooling operation to cool the target space based on the temperature of the target space. The air conditioning system according to the present embodiment also includes a control unit that controls the cooling operation of the air conditioner based on the humidity of the target space when the humidifier is performing a humidifying operation and the temperature of the target space is equal to or higher than a set temperature.

[0031] 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.

[0032] [Air conditioning system 1] The air conditioning system 1 is a system that conditions the air of a target space RM using a humidifier 10 and an air conditioner 20. The target space RM is an indoor space, such as a space in an office, a space in a commercial facility, a school classroom, or a hotel guest room.

[0033] The air conditioning system 1 includes a humidifier 10, an air conditioner 20, and a control device 30. The humidifier 10 humidifies the target space RM. The air conditioner 20 heats or cools the target space RM. The air conditioner 20 includes an indoor unit 21 and an outdoor unit 22. The control device 30 controls the air conditioning system including the humidifier 10 and the air conditioner 20. The control device 30 is communicatively connected to the humidifier 10 and the air conditioner 20. As shown in FIG. 2, the air conditioning system 1 includes a plurality of humidifiers 10 and a plurality of air conditioners 20. The number of humidifiers 10 and air conditioners 20 is not limited to the example of FIG. 2 and may be determined appropriately depending on the target space RM. Furthermore, in the air conditioning system 1, the number of each of the humidifiers 10 and air conditioners 20 may be one.

[0034] (humidifier 10) The humidifier 10 performs a humidification operation to humidify the target space RM based on the humidity of the target space RM. The humidifier 10 also performs a ventilation operation to ventilate the target space RM. The humidifier 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 humidifier 10 also humidifies the target space RM by adsorbing moisture contained in the return air RA and releasing it into the supply air SA.

[0035] The humidifier 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).

[0036] The humidifier 10 includes a moisture absorbent 10d, a heater 10h, blowers 10f1 and 10f2, a humidity sensor 10s, and a control circuit 10c.

[0037] (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.

[0038] In the humidifier 10, in order to interchange the part of the absorbent material 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 absorbent material 10d may be changed or the flow path may be changed.

[0039] The moisture absorbent material 10d is, for example, a desiccant material.

[0040] (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.

[0041] (Blower 10f1 and Blower 10f2) The blower 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 blower 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.

[0042] Each of the blowers 10f1 and 10f2 is, for example, a sirocco fan. Each of the blowers 10f1 and 10f2 may be, for example, an axial flow fan.

[0043] (humidity sensor 10s) The humidity sensor 10s detects the humidity in the return air RA. The humidity of the return air RA measured by the humidity sensor 10s is output to the control circuit 10c. The humidifier 10 detects the humidity in the return air RA using the humidity sensor 10s, thereby detecting the humidity in the target space RM.

[0044] (Control circuit 10c) The control circuit 10c controls the humidifier 10. The control circuit 10c controls the heater 10h, the blower 10f1, and the blower 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 humidity sensor 10s. The control circuit 10c also communicates with the control device 30.

[0045] The control circuit 10c controls the heater 10h, the blower 10f1, and the blower 10f2 so that the humidity in the target space RM measured by the humidity sensor 10s becomes the target humidity.

[0046] In the humidification operation, the control circuit 10c drives the absorbent 10d, the heater 10h, the blower 10f1, and the blower 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.

[0047] In ventilation operation, the control circuit 10c drives the blowers 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 blower 10f2 is set to be greater than the volume of air discharged as exhaust air EA by the blower 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.

[0048] The humidifier 10 may include, for example, a filter for removing dust and the like contained in the return air RA and the outside air OA, and a total heat exchanger. The humidity sensor 10s is not limited to being provided inside the humidifier 10, and may be provided, for example, in the target space RM.

[0049] (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 and an outdoor unit 22.

[0050] (indoor unit 21) The indoor unit 21 includes a heat exchanger 21a, a fan 21f, an indoor expansion valve 21v, a temperature sensor 21t1 and a temperature sensor 21t2, and a control circuit 21c.

[0051] 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.

[0052] 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.

[0053] The temperature sensor 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 temperature sensor 21t1 is output to the control circuit 21c. The temperature sensor 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 based on the temperature of the heat exchanger 21a measured by the temperature sensor 21t2. The temperature measured by the temperature sensor 21t2 is output to the control circuit 21c.

[0054] The control circuit 21c controls the indoor unit 21. The control circuit 21c controls the fan 21f. The control circuit 21c also acquires measurement results from the temperature sensor 21t1 and the temperature sensor 21t2. The control circuit 21c also communicates with the control device 30 and the outdoor unit 22.

[0055] The control circuit 21c controls the fan 21f and the outdoor unit 22 so that the temperature of the target space RM measured by the temperature sensor 21t1 becomes the set temperature.

[0056] (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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] The control circuit 10c controls the outdoor unit 22 so that the indoor unit 21 and the outdoor unit 22 operate in conjunction with each other, and the temperature of the target space RM measured by the temperature sensor 21t1 becomes the set temperature.

[0061] The operation of the air conditioner 20 will now be described. Fig. 1 shows the cooling operation state.

[0062] 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.

[0063] 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.

[0064] (Control device 30) The control device 30 controls each of the humidifier 10 and the air conditioner 20. Fig. 3 is a hardware configuration diagram showing the hardware configuration of the control device 30 provided in the air conditioning system 1, which is an example of the air conditioning system according to this embodiment.

[0065] The control device 30 includes a control unit 31, a RAM (Random Access Memory) 32, and a ROM (Read Only Memory) 33. The control device 30 also includes a storage I / F (Interface) 34 and an external I / F 35. The control unit 31, the RAM 32, the ROM 33, the storage I / F 34, and the external I / F 35 are each connected to a bus B1.

[0066] For example, a storage medium 34a is connected to the storage I / F 34. For example, a humidifier 10 and an air conditioner 20 are connected to the external I / F 35.

[0067] The control unit 31 is a CPU (Central Processing Unit) or an MPU (Micro Processing Unit), etc. The control unit 31 may be an ASIC (Application Specific Integrated Circuit) or an FPGA (Field-Programmable Gate Array). The control unit 31 executes a program to perform each process described in this specification. The control unit 31 is a computing device that reads a program (app, application) from a storage device such as the ROM 33 or a storage medium 34a onto the RAM 32 and executes the process. The control unit 31, the RAM 32, and the ROM 33 constitute a computer that controls the air conditioning system 1.

[0068] The RAM 32 is a volatile semiconductor memory that temporarily stores, for example, programs (applications) and the like.

[0069] The ROM 33 is, for example, a non-volatile semiconductor memory that can retain programs (apps, applications) even when the power is turned off. The ROM 33 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.

[0070] The storage I / F 34 is an interface with an external storage device such as a storage medium 34a.

[0071] The storage medium 34a 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).

[0072] The external I / F 35 is an interface that connects the humidifier 10 and the air conditioner 20 to the control device 30. The control device 30 is connected to the humidifier 10 and the air conditioner 20 via the external I / F 35.

[0073] When the humidifier 10 is in humidifying operation and the temperature of the target space RM is equal to or higher than the set temperature, the control unit 31 controls the cooling operation of the air conditioner 20 based on the humidity of the target space RM. Furthermore, when the humidity of the target space RM is equal to or lower than the target humidity, the control unit 31 may control the humidifier 10 to perform humidifying operation and control the air conditioner 20 to switch to cooling operation. Hereinafter, normal cooling operation will be referred to as first cooling operation. Furthermore, when the humidity of the target space RM is equal to or lower than the target humidity, the control unit 31 may control the air conditioner 20 to switch to cooling operation in which the evaporation temperature of the air conditioner 20 is equal to or higher than the dew point temperature. Hereinafter, cooling operation in which the evaporation temperature of the air conditioner 20 is equal to or higher than the dew point temperature will be referred to as second cooling operation.

[0074] Furthermore, in a state where humidity priority control is set, which prioritizes humidity out of the temperature and humidity of the target space RM, if the humidity of the target space RM is equal to or lower than the target humidity, the control unit 31 may control the humidifier 10 to perform humidification operation and switch the air conditioner 20 to cooling operation (for example, first cooling operation). Furthermore, in a state where humidity priority control is not set, if the humidity of the target space RM is equal to or lower than the target humidity, the control unit 31 may control the humidifier 10 to switch to ventilation operation for ventilating the target space RM, and control the air conditioner 20 to switch to cooling operation (for example, first cooling operation).

[0075] Furthermore, the air conditioner 20 may be configured to operate in heating mode when the room temperature is lower than a first temperature, and to operate in first cooling mode when the room temperature is equal to or higher than the first temperature. Furthermore, the control unit 31 may control the air conditioner to switch from first cooling mode to second cooling mode when the set temperature is equal to or higher than the first temperature. Furthermore, the control unit 31 may control the air conditioner to switch from heating mode to first cooling mode or second cooling mode when the set temperature is lower than the first temperature.

[0076] 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, a control method for the air conditioning system according to this embodiment and a program procedure 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.

[0077] [First process] Regarding the processing of the air conditioning system 1, which is an example of the air conditioning system according to this embodiment, a case where the set temperature in the air conditioner 20 is equal to the cooling / heating switching temperature will be described as the first processing. Fig. 4 is a diagram illustrating temperatures in the first processing of the air conditioning system 1, which is an example of the air conditioning system according to this embodiment.

[0078] As shown in FIG. 4, a case will be described in which the set temperature Tset in the target space RM is equal to the cooling / heating switching temperature Tmd in the air conditioning system 1. The set temperature Tset is the set temperature when the air conditioner 20 heats or cools the target space RM. The cooling / heating switching temperature Tmd is the temperature at which the air conditioner 20 switches between a heating operation for heating the target space RM and a cooling operation for cooling the target space RM. When the room temperature is lower than the cooling / heating switching temperature Tmd, the air conditioner 20 performs a heating operation for heating the target space RM. When the room temperature is higher than the cooling / heating switching temperature Tmd, the air conditioner 20 performs a cooling operation (e.g., a first cooling operation) for cooling the target space RM.

[0079] In FIG. 4, for example, the set temperature Tset and the cooling / heating switching temperature Tmd are 23°C. The humidifier 10 performs humidification operation when the humidity in the target space does not reach the target humidity. Because the humidifier 10 supplies supply air SA heated by the heater 10h to the target space RM, it is expected that the room temperature will be higher than the set temperature Tset. In the air conditioning system 1, when the air conditioner 20 performs cooling operation while humidifying with the humidifier 10, dehumidification may occur due to the cooling operation of the air conditioner 20. Therefore, in the air conditioning system 1, when the air conditioner 20 performs cooling operation while humidifying with the humidifier 10, a second cooling operation is performed to prevent dehumidification due to the cooling operation of the air conditioner 20.

[0080] FIG. 5 is a flow diagram illustrating the first process in the air conditioning system 1, which is an example of the air conditioning system according to this embodiment.

[0081] (Step S10) First, the control unit 31 determines whether the room temperature is equal to or higher than the set temperature. In the first process, since the set temperature and the cooling / heating switching temperature are equal, the control unit 31 determines whether the room temperature is equal to or higher than the set temperature, thereby determining whether the room temperature is equal to or higher than the cooling / heating switching temperature.

[0082] If the room temperature is equal to or higher than the set temperature (YES in step S10), the control unit 31 proceeds to step S20. If the room temperature is lower than the set temperature (NO in step S10), the control unit 31 proceeds to step S25.

[0083] (Step S20) If the room temperature is equal to or higher than the set temperature (YES in step S10), the control unit 31 determines whether the humidity is equal to or higher than the target humidity.

[0084] If the humidity is equal to or higher than the target humidity (YES in step S20), the control unit 31 proceeds to step S30. If the humidity is lower than the target humidity (NO in step S20), the control unit 31 proceeds to step S40.

[0085] (Step S30) If the humidity is equal to or higher than the target humidity (YES in step S20), the control unit 31 controls the humidifier 10 to perform ventilation operation (normal ventilation). In the case of normal ventilation, the humidifier 10 does not perform humidification.

[0086] (Step S35) Next, the control unit 31 controls the air conditioner 20 to turn off the heating thermostat or to perform the second cooling operation. By turning off the heating thermostat or performing the second cooling operation, the air conditioner 20 can prevent the humidity humidified by the humidifier 10 from being dehumidified. Then, the control unit 31 proceeds to step S80.

[0087] (Step S40) If the humidity is less than the target humidity (NO in step S20), the control unit 31 determines whether the humidity priority mode is set, which prioritizes humidity over the temperature and humidity of the target space RM. In other words, the control unit 31 determines whether humidity priority control is set, which prioritizes humidity over the temperature and humidity of the target space RM. If the humidity priority mode is set (YES in step S40), the control unit 31 proceeds to step S50. If the humidity priority mode is not set (NO in step S40), the control unit 31 proceeds to step S30.

[0088] (Step S50) If the humidity priority mode is selected (YES in step S40), the control unit 31 controls the humidifier 10 to perform the humidifying operation.

[0089] (Step S55) Next, the control unit 31 controls the air conditioner 20 to perform the second cooling operation. By having the air conditioner 20 perform the second cooling operation, it is possible to prevent the humidity added by the humidifier 10 from being dehumidified. Then, the control unit 31 proceeds to step S80.

[0090] (Step S25) If the room temperature is lower than the set temperature (NO in step S10), the control unit 31 determines whether the humidity is equal to or higher than the target humidity.

[0091] If the humidity is equal to or higher than the target humidity (YES in step S25), the control unit 31 proceeds to step S60. If the humidity is lower than the target humidity (NO in step S25), the control unit 31 proceeds to step S45.

[0092] (Step S60) If the humidity is equal to or higher than the target humidity (YES in step S25), the control unit 31 controls the humidifier 10 based on the required humidification amount. Details of the humidifier control performed by the control unit 31 will be described. Fig. 6 is a flow diagram illustrating the process of humidifier control based on the required humidification amount in the air conditioning system 1, which is an example of an air conditioning system according to this embodiment.

[0093] (Step S61) First, the control unit 31 acquires the humidity in the target space RM.

[0094] (Step S62) Next, the control unit 31 calculates a required humidification amount, which is the amount of humidification required to humidify the target space RM. The control unit 31 calculates the required humidification amount, which is the amount of humidification required to humidify the target space RM, based on, for example, the humidity measured by the humidity sensor 10s and specifications such as the size of the target space RM.

[0095] (Step S63) Next, the control unit 31 calculates the minimum humidifying capacity of the humidifier 10. For example, if the air conditioning system 1 includes multiple humidifiers 10, the control unit 31 calculates the minimum humidifying capacity by adding up the minimum humidifying capacity of each of the multiple humidifiers 10.

[0096] (Step S64) Next, the control unit 31 determines whether the minimum humidification capacity calculated in step S63 is equal to or greater than the required humidification amount calculated in step S62. If the minimum humidification capacity is equal to or greater than the required humidification amount (YES in step S64), the control unit 31 proceeds to step S65. If the minimum humidification capacity is less than the required humidification amount (NO in step S64), the control unit 31 returns to step S61 and repeats the process.

[0097] (Step S65) The control unit 31 determines the operating state of the humidifiers 10. For example, the control unit 31 determines whether to perform humidification operation or ventilation operation for each of the multiple humidifiers 10. The control unit 31 also determines the humidification capacity with which the target space RM should be humidified for the humidifiers 10 that perform humidification operation. The control unit 31 determines the operating state of the multiple humidifiers 10 so that the required amount of humidification calculated in step S62 is achieved. The control unit 31 controls the humidifiers 10 so that the determined operating state is achieved.

[0098] (Step S66) If there are multiple humidifiers 10, the control unit 31 sets some of the humidifiers 10 to ventilation operation and stops humidification based on the determination in step S65.

[0099] The control unit 31 executes the processes from step S61 to step S66 as humidifier control. Next, returning to FIG.

[0100] (Step S68) Next, the control unit 31 controls the air conditioner 20 to perform heating operation. Then, the control unit 31 advances the process to step S80.

[0101] As described above, when multiple humidifiers 10 are provided, the control unit 31 may control the operating state of the multiple humidifiers 10 based on the total value of the minimum humidification capacities of the multiple humidifiers 10 and the required humidification amount of the target space RM.

[0102] (Step S45) If the humidity is less than the target humidity (NO in step S25), the control unit 31 determines whether the mode is humidity priority mode. If the mode is humidity priority mode (YES in step S45), the control unit 31 proceeds to step S70. If the mode is not humidity priority mode (NO in step S45), the control unit 31 proceeds to step S60.

[0103] (Step S70) If the humidity priority mode is selected (YES in step S45), the control unit 31 controls the humidifier 10 to perform the humidifying operation.

[0104] (Step S75) Next, the control unit 31 controls the air conditioner 20 to perform heating operation. Then, the control unit 31 advances the process to step S80.

[0105] (Step S80) The control unit 31 determines whether or not to stop the operation. If the operation is to be stopped (YES in step S80), the control unit 31 ends the process. If the operation is not to be stopped (NO in step S80), the control unit 31 returns to step S10 and repeats the process.

[0106] The cooling / heating switching temperature Tmd is an example of the first temperature.

[0107] [Second process] Regarding the processing of the air conditioning system 1, which is an example of the air conditioning system according to this embodiment, a case where the set temperature and the cooling / heating switching temperature in the air conditioner 20 are different will be described as the second processing. Fig. 7 is a diagram explaining the temperature in the second processing in the air conditioning system 1, which is an example of the air conditioning system according to this embodiment.

[0108] As shown in FIG. 7, unlike the first process, a case will be described in which the set temperature Tset and the cooling / heating switching temperature Tmd in the target space RM in the air conditioning system 1 differ.

[0109] 7, for example, the set temperature Tset is 20° C. and the cooling / heating switching temperature Tmd is 23° C. When the humidifier 10 performs a humidifying operation, the humidifier 10 supplies supply air SA heated by the heater 10h to the target space RM, and it is therefore expected that the room temperature will be higher than the set temperature Tset.

[0110] In the second process, the operation mode differs depending on whether the room temperature is equal to or higher than the cooling / heating switching temperature. For example, when the room temperature is lower than the cooling / heating switching temperature, the control unit switches the air conditioner from heating operation to first cooling operation or second cooling operation. When the room temperature is equal to or higher than the cooling / heating switching temperature, the control unit switches the air conditioner from first cooling operation to second cooling operation.

[0111] FIG. 8 is a flow diagram illustrating the second process in the air conditioning system 1, which is an example of the air conditioning system according to this embodiment.

[0112] (Step S105) First, the control unit 31 determines whether the room temperature is equal to or higher than the set temperature. If the room temperature is equal to or higher than the set temperature (YES in step S105), the control unit 31 proceeds to step S110. If the room temperature is lower than the set temperature (NO in step S105), the control unit 31 proceeds to step S128.

[0113] (Step S110) Next, the control unit 31 determines whether the room temperature is equal to or higher than the cooling / heating switching temperature. If the room temperature is equal to or higher than the cooling / heating switching temperature (YES in step S110), the control unit 31 proceeds to step S120. If the room temperature is lower than the cooling / heating switching temperature (NO in step S110), the control unit 31 proceeds to step S125.

[0114] (Step S120) If the room temperature is equal to or higher than the cooling switching temperature (YES in step S110), the control unit 31 determines whether the humidity is equal to or higher than the target humidity.

[0115] If the humidity is equal to or higher than the target humidity (YES in step S120), the control unit 31 proceeds to step S130. If the humidity is lower than the target humidity (NO in step S120), the control unit 31 proceeds to step S140.

[0116] (Step S130) If the humidity is equal to or higher than the target humidity (YES in step S120), the control unit 31 controls the humidifier 10 to perform ventilation operation (normal ventilation). In the case of normal ventilation, the humidifier 10 does not perform humidification.

[0117] (Step S135) Next, the control unit 31 controls the air conditioner 20 to perform the second cooling operation. By having the air conditioner 20 perform the second cooling operation, it is possible to prevent the humidity humidified by the humidifier 10 from being dehumidified. Then, the control unit 31 proceeds to step S200.

[0118] (Step S140) If the humidity is less than the target humidity (NO in step S120), the control unit 31 determines whether the humidity priority mode is selected. If the humidity priority mode is selected (YES in step S140), the control unit 31 proceeds to step S150. If the humidity priority mode is not selected (NO in step S140), the control unit 31 proceeds to step S130.

[0119] (Step S150) If the humidity priority mode is selected (YES in step S140), the control unit 31 controls the humidifier 10 to perform the humidifying operation.

[0120] (Step S155) Next, the control unit 31 controls the air conditioner 20 to perform the second cooling operation. By performing the second cooling operation by the air conditioner 20, even when a humidification operation is being performed by the humidifier 10, it is possible to suppress an increase in temperature in the target space RM and to suppress dehumidification of the humidity humidified by the humidifier 10. Then, the control unit 31 proceeds to step S200.

[0121] (Step S125) If the room temperature is below the cooling switching temperature (NO in step S110), the control unit 31 determines whether the humidity is equal to or higher than the target humidity.

[0122] If the humidity is equal to or higher than the target humidity (YES in step S125), the control unit 31 proceeds to step S160. If the humidity is lower than the target humidity (NO in step S125), the control unit 31 proceeds to step S145.

[0123] (Step S160) If the humidity is equal to or higher than the target humidity (YES in step S125), the control unit 31 controls the humidifier 10 to perform ventilation operation (normal ventilation). In the case of normal ventilation, the humidifier 10 does not perform humidification.

[0124] (Step S165) Next, the control unit 31 controls the air conditioner 20 to perform the first cooling operation or the second cooling operation. By having the air conditioner 20 perform the first cooling operation or the second cooling operation, it is possible to prevent the temperature in the target space RM from rising even when a humidifying operation is being performed by the humidifier 10. Then, the control unit 31 proceeds to step S200.

[0125] (Step S145) If the humidity is less than the target humidity (NO in step S125), the control unit 31 determines whether the mode is humidity priority mode. If the mode is humidity priority mode (YES in step S145), the control unit 31 proceeds to step S170. If the mode is not humidity priority mode (NO in step S145), the control unit 31 proceeds to step S160.

[0126] (Step S170) If the humidity priority mode is selected (YES in step S145), the control unit 31 controls the humidifier 10 to perform the humidifying operation.

[0127] (Step S175) Next, the control unit 31 controls the air conditioner 20 to perform the first cooling operation or the second cooling operation. By having the air conditioner 20 perform the first cooling operation or the second cooling operation, it is possible to prevent the temperature in the target space RM from rising even when a humidifying operation is being performed by the humidifier 10. Then, the control unit 31 proceeds to step S200.

[0128] (Step S128) If the room temperature is lower than the set temperature (NO in step S105), the control unit 31 determines whether the humidity is equal to or higher than the target humidity.

[0129] If the humidity is equal to or higher than the target humidity (YES in step S128), the control unit 31 proceeds to step S180. If the humidity is lower than the target humidity (NO in step S128), the control unit 31 proceeds to step S148.

[0130] (Step S180) If the humidity is equal to or higher than the target humidity (YES in step S128), the control unit 31 controls the humidifier 10 based on the required humidification amount. The control unit 31 controls the humidifier 10 so that the control unit 31 performs the same processing as in step S60 described above. For details of the processing in step S180, refer to the processing in step S60, and a detailed description thereof will be omitted here.

[0131] (Step S185) Next, the control unit 31 controls the air conditioner 20 to perform heating operation. Then, the control unit 31 advances the process to step S200.

[0132] (Step S148) If the humidity is less than the target humidity (NO in step S128), the control unit 31 determines whether the mode is humidity priority mode. If the mode is humidity priority mode (YES in step S148), the control unit 31 proceeds to step S190. If the mode is not humidity priority mode (NO in step S148), the control unit 31 proceeds to step S180.

[0133] (Step S190) If the humidity priority mode is selected (YES in step S148), the control unit 31 controls the humidifier 10 to perform the humidifying operation.

[0134] (Step S195) Next, the control unit 31 controls the air conditioner 20 to perform heating operation. Then, the control unit 31 advances the process to step S200.

[0135] (Step S200) The control unit 31 determines whether or not to stop the operation. If the operation is to be stopped (YES in step S200), the control unit 31 ends the process. If the operation is not to be stopped (NO in step S200), the control unit 31 returns to step S105 and repeats the process.

[0136] The cooling / heating switching temperature Tmd is an example of the first temperature.

[0137] [Third Processing] Regarding the processing of the air conditioning system 1, which is an example of the air conditioning system according to this embodiment, a case will be described in which there is a cooling switchover temperature and a heating switchover temperature in the air conditioner 20 as the third processing. Fig. 9 is a diagram for explaining temperatures in the third processing in the air conditioning system 1, which is an example of the air conditioning system according to this embodiment.

[0138] As shown in Fig. 9, unlike the first and second processes, in the air conditioning system 1, the cooling switchover temperature Tmdc at which the operation mode is switched to cooling is different from the heating switchover temperature Tmdh at which the operation mode is switched to heating. However, the cooling switchover temperature Tmdc is higher than the heating switchover temperature Tmdh. When the room temperature is between the cooling switchover temperature Tmdc and the heating switchover temperature Tmdh, the air conditioner 20 performs the fan operation. In addition, the set temperature Tset, the cooling switchover temperature Tmdc, and the heating switchover temperature Tmdh are different from one another.

[0139] 9, for example, the set temperature Tset is 22° C., the cooling switchover temperature Tmdc is 20° C., and the heating switchover temperature Tmdh is 25° C. When the humidifier 10 performs a humidifying operation, the humidifier 10 supplies supply air SA heated by the heater 10h to the target space RM, and it is therefore expected that the room temperature will be higher than the set temperature Tset.

[0140] In the third process, the operation mode differs depending on whether the room temperature is equal to or higher than the cooling switchover temperature. For example, when the room temperature is lower than the cooling switchover temperature, the control unit switches the air conditioner from heating operation or fan operation to first cooling operation or second cooling operation. When the room temperature is equal to or higher than the cooling / heating switchover temperature, the control unit switches the air conditioner from first cooling operation to second cooling operation.

[0141] As described above, the air conditioner 20 may be configured to perform heating operation when the room temperature is lower than the second temperature, to perform first cooling operation when the room temperature is equal to or higher than the third temperature, and to perform fan operation when the room temperature is equal to or higher than the second temperature but lower than the third temperature. The control unit 31 may then control the air conditioner 20 to switch from the first cooling operation to the second cooling operation when the set temperature is equal to or higher than the third temperature. The control unit 31 may also control the air conditioner 20 to switch from heating operation to the first cooling operation or the second cooling operation when the set temperature is lower than the third temperature.

[0142] FIG. 10 is a flow diagram illustrating the third process in the air conditioning system 1, which is an example of the air conditioning system according to this embodiment.

[0143] (Step S205) First, the control unit 31 determines whether the room temperature is equal to or higher than the set temperature. If the room temperature is equal to or higher than the set temperature (YES in step S205), the control unit 31 proceeds to step S210. If the room temperature is lower than the set temperature (NO in step S205), the control unit 31 proceeds to step S228.

[0144] (Step S210) Next, the control unit 31 determines whether the room temperature is equal to or higher than the cooling switching temperature. If the room temperature is equal to or higher than the cooling switching temperature (YES in step S210), the control unit 31 proceeds to step S220. If the room temperature is lower than the cooling switching temperature (NO in step S210), the control unit 31 proceeds to step S225.

[0145] (Step S220) If the room temperature is equal to or higher than the cooling switching temperature (YES in step S210), the control unit 31 determines whether the humidity is equal to or higher than the target humidity.

[0146] If the humidity is equal to or greater than the target humidity (YES in step S220), the control unit 31 proceeds to step S230. If the humidity is less than the target humidity (NO in step S220), the control unit 31 proceeds to step S240.

[0147] (Step S230) If the humidity is equal to or higher than the target humidity (YES in step S220), the control unit 31 controls the humidifier 10 to perform normal ventilation operation (normal ventilation). In the case of normal ventilation, the humidifier 10 does not perform humidification.

[0148] (Step S235) Next, the control unit 31 controls the air conditioner 20 to perform the second cooling operation. By having the air conditioner 20 perform the second cooling operation, it is possible to prevent the humidity humidified by the humidifier 10 from being dehumidified. Then, the control unit 31 proceeds to step S300.

[0149] (Step S240) If the humidity is less than the target humidity (NO in step S220), the control unit 31 determines whether the humidity priority mode is selected. If the humidity priority mode is selected (YES in step S240), the control unit 31 proceeds to step S250. If the humidity priority mode is not selected (NO in step S240), the control unit 31 proceeds to step S230.

[0150] (Step S250) If the humidity priority mode is selected (YES in step S240), the control unit 31 controls the humidifier 10 to perform the humidifying operation.

[0151] (Step S255) Next, the control unit 31 controls the air conditioner 20 to perform the second cooling operation. By having the air conditioner 20 perform the second cooling operation, it is possible to prevent the humidity humidified by the humidifier 10 from being dehumidified. Then, the control unit 31 proceeds to step S300.

[0152] (Step S225) If the room temperature is below the cooling switching temperature (NO in step S210), the control unit 31 determines whether the humidity is equal to or higher than the target humidity.

[0153] If the humidity is equal to or greater than the target humidity (YES in step S225), the control unit 31 proceeds to step S260. If the humidity is less than the target humidity (NO in step S225), the control unit 31 proceeds to step S245.

[0154] (Step S260) If the humidity is equal to or higher than the target humidity (YES in step S225), the control unit 31 controls the humidifier 10 to perform normal ventilation operation (normal ventilation). In the case of normal ventilation, the humidifier 10 does not perform humidification.

[0155] (Step S265) Next, the control unit 31 controls the air conditioner 20 to perform the first cooling operation or the second cooling operation. By having the air conditioner 20 perform the first cooling operation or the second cooling operation, it is possible to prevent the temperature in the target space RM from rising even when a humidifying operation is being performed by the humidifier 10. Then, the control unit 31 proceeds to step S300.

[0156] (Step S245) If the humidity is less than the target humidity (NO in step S225), the control unit 31 determines whether the mode is humidity priority mode. If the mode is humidity priority mode (YES in step S245), the control unit 31 proceeds to step S270. If the mode is not humidity priority mode (NO in step S245), the control unit 31 proceeds to step S260.

[0157] (Step S270) If the humidity priority mode is selected (YES in step S245), the control unit 31 controls the humidifier 10 to perform the humidifying operation.

[0158] (Step S275) Next, the control unit 31 controls the air conditioner 20 to perform the first cooling operation or the second cooling operation. By having the air conditioner 20 perform the first cooling operation or the second cooling operation, it is possible to prevent the temperature in the target space RM from rising even when a humidifying operation is being performed by the humidifier 10. Then, the control unit 31 proceeds to step S300.

[0159] (Step S228) If the room temperature is lower than the set temperature (NO in step S205), the control unit 31 determines whether the humidity is equal to or higher than the target humidity.

[0160] If the humidity is equal to or greater than the target humidity (YES in step S228), the control unit 31 proceeds to step S280. If the humidity is less than the target humidity (NO in step S228), the control unit 31 proceeds to step S248.

[0161] (Step S280) If the humidity is equal to or higher than the target humidity (YES in step S228), the control unit 31 controls the humidifier 10. The control unit 31 controls the humidifier 10 so that the control unit 31 performs the same processing as in step S60 described above. For details of the processing in step S280, refer to the processing in step S60, and a detailed description thereof will be omitted here.

[0162] (Step S285) Next, the control unit 31 controls the air conditioner 20 to perform heating operation or fan operation. That is, when the room temperature is equal to or higher than the heating switchover temperature, the air conditioner 20 is controlled to perform fan operation. When the room temperature is lower than the heating switchover temperature, the air conditioner 20 is controlled to perform heating operation. Then, the control unit 31 proceeds to step S300.

[0163] (Step S248) If the humidity is less than the target humidity (NO in step S228), the control unit 31 determines whether the mode is humidity priority mode. If the mode is humidity priority mode (YES in step S248), the control unit 31 proceeds to step S290. If the mode is not humidity priority mode (NO in step S248), the control unit 31 proceeds to step S280.

[0164] (Step S290) If the humidity priority mode is selected (YES in step S248), the control unit 31 controls the humidifier 10 to perform the humidifying operation.

[0165] (Step S295) Next, the control unit 31 controls the air conditioner 20 to perform heating operation or fan operation. That is, when the room temperature is equal to or higher than the heating switchover temperature, the air conditioner 20 is controlled to perform fan operation. When the room temperature is lower than the heating switchover temperature, the air conditioner 20 is controlled to perform heating operation. Then, the control unit 31 proceeds to step S300.

[0166] (Step S300) The control unit 31 determines whether or not to stop the operation. If the operation is to be stopped (YES in step S300), the control unit 31 ends the process. If the operation is not to be stopped (NO in step S300), the control unit 31 returns to step S205 and repeats the process.

[0167] According to the air conditioning system of this embodiment, in an air conditioning system equipped with a humidifier and an air conditioner, the humidifier and the air conditioner can operate in coordination. Also, according to the air conditioning system of this embodiment, by coordinating the humidifier and the air conditioner, it is possible to prevent the air conditioner from dehumidifying the humidity humidified by the humidifier. Furthermore, according to the air conditioning system of this embodiment, by coordinating the humidifier and the air conditioner, it is possible to suppress an increase in the temperature of the target space RM due to the humidifying operation of the humidifier.

[0168] The heating switchover temperature Tmdh is an example of the second temperature, and the cooling switchover temperature Tmdc is an example of the third temperature.

[0169] 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 humidifier or an air conditioning device.

[0170] 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]

[0171] 1. Air conditioning system 10 Humidifier 20 Air conditioner 21 Indoor unit 21a heat exchanger 22 Outdoor unit 22a heat exchanger 30 Control device 31 Control Unit 32 RAM 33 ROM 34 Storage I / F 34a Storage medium 35 External I / F B1 Bus

Claims

1. a humidifier (10) that performs a humidification operation to humidify a target space (RM) based on the humidity of the target space (RM); an air conditioner (20) that performs a heating operation for heating the target space (RM) or a cooling operation for cooling the target space (RM) based on the temperature of the target space (RM); a control unit (31) that controls the cooling operation of the air conditioner (20) based on the humidity of the target space (RM) when the humidifier (10) is in humidification operation and the temperature of the target space (RM) is equal to or higher than a set temperature; Equipped with Air conditioning system (1).

2. When the humidity in the target space (RM) is equal to or lower than a target humidity, the control unit (31) controls the humidifier (10) to perform a humidifying operation and controls the air conditioner (20) to switch to a cooling operation. An air conditioning system (1) according to claim 1.

3. When the humidity in the target space (RM) is equal to or lower than a target humidity, the control unit (31) controls the air conditioner (20) to switch to a cooling operation in which an evaporation temperature in the air conditioner (20) is equal to or higher than a dew point temperature. An air conditioning system (1) according to claim 2.

4. The control unit (31) controls the humidifier (10) to perform humidifying operation and the air conditioner (20) to switch to cooling operation when the humidity of the target space (RM) is equal to or lower than a target humidity in a state where humidity priority control is set, which prioritizes humidity between the temperature and humidity of the target space (RM). An air conditioning system (1) according to any one of claims 2 and 3.

5. When the humidity of the target space (RM) is equal to or lower than a target humidity in a state in which the humidity priority control is not set, the control unit (31) controls the humidifier (10) to switch to a ventilation operation for ventilating the target space (RM), and controls the air conditioner (20) to switch to a cooling operation. An air conditioning system (1) according to claim 4.

6. The cooling operation includes a first cooling operation and a second cooling operation in which an evaporation temperature in the air conditioner (20) is set to a dew point temperature or higher, The air conditioner (20) is configured to perform heating operation when the room temperature is lower than a first temperature, and to perform first cooling operation when the room temperature is equal to or higher than the first temperature, The control unit (31) When the humidity in the target space (RM) is equal to or lower than a target humidity and the set temperature is equal to or higher than the first temperature, the air conditioner (20) is controlled to switch from the first cooling operation to the second cooling operation; When the humidity in the target space (RM) is equal to or lower than a target humidity and the set temperature is lower than the first temperature, the air conditioner (20) is controlled to switch from a heating operation to the first cooling operation or the second cooling operation. An air conditioning system (1) according to any one of claims 1 to 3.

7. The cooling operation includes a first cooling operation and a second cooling operation in which an evaporation temperature in the air conditioner (20) is set to a dew point temperature or higher, the air conditioner (20) is configured to perform heating operation when the room temperature is lower than a second temperature, to perform the first cooling operation when the room temperature is equal to or higher than a third temperature, and to perform fan operation when the room temperature is equal to or higher than the second temperature and lower than the third temperature; The control unit (31) When the humidity in the target space (RM) is equal to or lower than a target humidity and the set temperature is equal to or higher than the third temperature, the air conditioner (20) is controlled to switch from the first cooling operation to the second cooling operation; When the humidity in the target space (RM) is equal to or lower than a target humidity and the set temperature is lower than the third temperature, the air conditioner (20) is controlled to switch from a heating operation to the first cooling operation or the second cooling operation. An air conditioning system (1) according to any one of claims 1 to 3.

8. A plurality of the humidifying devices (10) are provided, The cooling operation includes a first cooling operation and a second cooling operation in which an evaporation temperature in the air conditioner (20) is set to a dew point temperature or higher, The control unit (31) controls the operating states of the plurality of humidifiers (10) based on a total value of the minimum humidification capacities of the plurality of humidifiers (10) and a required humidification amount of the target space (RM). An air conditioning system (1) according to any one of claims 1 to 3.

9. a humidifier (10) that performs a humidification operation to humidify a target space (RM) based on the humidity of the target space (RM); and an air conditioning device (20) that performs a heating operation to heat the target space (RM) or a cooling operation to cool the target space (RM) based on a temperature of the target space (RM), When the humidifier (10) is in humidification operation and the temperature of the target space (RM) is equal to or higher than a set temperature, the cooling operation of the air conditioner (20) is controlled based on the humidity of the target space (RM). A method for controlling an air conditioning system (1).

10. A computer (31, 32, 33) controls an air conditioning system (1) including a humidifier (10) that performs a humidifying operation to humidify a target space (RM) based on the humidity of the target space (RM), and an air conditioner (20) that 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), A program for executing a procedure for controlling the cooling operation of the air conditioner (20) based on the humidity of the target space (RM) when the humidifier (10) is in humidification operation and the temperature of the target space (RM) is equal to or higher than a set temperature.

11. A control device (30) including a control unit (31) for controlling an air conditioning system (1) including a humidifier (10) that performs a humidifying operation to humidify a target space (RM) based on the humidity of the target space (RM), and an air conditioner (20) that 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), When the humidifier (10) is in humidification operation and the temperature of the target space (RM) is equal to or higher than a set temperature, the control unit (31) controls the cooling operation of the air conditioner (20) based on the humidity of the target space (RM). A control device (30).

Images