JP2005172284A - Air conditioning system, air conditioning control device and control method of air conditioning system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioning system, an air conditioning control device and a control method of the air conditioning system, improving certainty of air conditioning. <P>SOLUTION: This air conditioning system 13 includes: an air conditioning part 14; first detecting parts 50, 53; second detecting parts 55, 56, 63, 64; and an air conditioning control part 31. The air conditioning part 14 introduces the return air from the interior 80 of a house, denatures the conditioned air, and supplies the same to the interior of a house. The first detecting parts 50, 53 detect the air state of the conditioned air supplied into the interior 80, and the second detecting parts 55, 56, 63, 64 detect the air state of the air of the interior 80 or the return air. When the detecting parts 50, 53 detect the normal condition, the air conditioning part 14 is controlled on the basis of the detection results of the first detecting parts 50, 53, and when they detect the abnormal condition, it is controlled on the basis of the detection results of the second detecting parts 55, 56, 63, 64. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an air conditioning system, an air conditioning control device, and an air conditioning system control method.

2. Description of the Related Art Conventionally, an air conditioning system that improves comfort in a building by supplying conditioned air into the building such as a building or a house is known (for example, Patent Document 1).
This air conditioning system is a system that harmonizes air in an air conditioning target area by supplying conditioned air to an indoor air conditioning target area. This air conditioning system includes an air conditioner, a supply air temperature sensor, a return air temperature sensor, and an air conditioning control device. The air conditioner is an air conditioner for harmonizing the mixed air of outside air introduced from the outside and the return air from the air conditioning target area and then supplying the mixed air to the air conditioning target area. This air conditioner has an air conditioner and a blower. The air conditioner changes the air condition such as the temperature and humidity of the mixed air. The blower supplies mixed air after conditioning from the air conditioner to the air conditioning target area. The supply air temperature sensor detects the temperature of the mixed air supplied from the air conditioner to the air-conditioning target area. The return air temperature sensor detects the temperature of the return air from the air conditioning target area. The air conditioning control device is configured to supply the mixed air having a desired temperature to the air-conditioning target area based on the temperature of the mixed air detected by the supply air temperature sensor or the temperature of the return air detected by the return air temperature sensor. Control the operation of the air conditioner.
JP 2002-333190 A

  By the way, in such an air conditioning system, the operation of the air conditioner is controlled based on the air state of the mixed air supplied to the air conditioning target area or the air state of the return air from the air conditioning target area. Therefore, when the sensor for detecting the air state of the mixed air or the return air is damaged, the operation of the air conditioner cannot be controlled properly. Therefore, in the conventional air conditioning system, when the sensor is abnormal, control for stopping the operation of the air conditioner is performed. In such a case, the supply of conditioned air into the room stops.

For this reason, it is difficult to say that the conventional air conditioning system has sufficient certainty to harmonize indoor air.
Accordingly, an object of the present invention is to provide an air conditioning system, an air conditioning control device, and an air conditioning system control method that can improve the reliability of air conditioning.

  The air conditioning system according to claim 1 is an air conditioning system for conditioning indoor air, and includes an air conditioning unit, a first detection unit, a second detection unit, and an air conditioning control unit. Yes. The air conditioning section introduces return air from the room. Moreover, the air conditioning unit harmonizes the return air and transforms the return air into conditioned air. Furthermore, the air conditioning unit supplies conditioned air to the room. The 1st detection part is detecting the air state of the conditioned air supplied indoors. This air state is information indicating the state of the air to be detected, and is, for example, the temperature and humidity of the air to be detected. The 2nd detection part has detected the air state of indoor air or return air. The air conditioning control unit controls the air conditioning unit based on the detection result of the first detection unit when the first detection unit is normal. Further, the air conditioning control unit controls the air conditioning unit based on the detection result of the second detection unit when the first detection unit is abnormal.

  In this air conditioning system, return air from the room is introduced into the air conditioning unit. The return air is harmonized by the air conditioning unit and transformed into conditioned air. The conditioned air is supplied indoors by the air conditioning unit. The air state of the conditioned air supplied to the room is detected by the first detector. The air condition of indoor air or return air is detected by the second detection unit. The air conditioning unit is controlled by the air conditioning control unit based on the detection result of the first detection unit when the first detection unit is normal. When the first detection unit is abnormal, the air conditioning unit is controlled by the air conditioning control unit based on the detection result of the second detection unit.

  Here, when the first detection unit is abnormal, the air conditioning unit is controlled by the air conditioning control unit based on the detection result of the second detection unit. In a conventional air conditioning system, control is performed to stop the operation of the air conditioning unit when the first detection unit is abnormal. Therefore, in the conventional air conditioning system, when the first detection unit is abnormal, the supply of conditioned air to the indoor is stopped. However, in this air conditioning system, when the first detection unit is abnormal, the air conditioning unit is controlled based on the detection result of the second detection unit instead of the detection result of the first detection unit. Therefore, even when the first detection unit is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, in this air conditioning system, the reliability of air conditioning can be improved.

An air conditioning system according to a second aspect is the air conditioning system according to the first aspect, wherein the first detection unit detects the temperature of the conditioned air. Moreover, the 2nd detection part has detected the temperature of indoor air or return air.
Here, the temperature of the conditioned air is detected by the first detector. Moreover, the temperature of indoor air or return air is detected by the second detection unit. When the first detector that detects the temperature of the conditioned air supplied from the air conditioner is abnormal, the air conditioner is controlled by the air conditioning controller based on the temperature of the indoor air or the return air detected by the second detector. Be controlled. In a conventional air conditioning system, control is performed to stop the operation of the air conditioning unit when the first detection unit is abnormal. Therefore, in the conventional air conditioning system, when the first detection unit is abnormal, the supply of conditioned air to the indoor is stopped. However, in this air conditioning system, when the first detection unit is abnormal, the air conditioning unit is controlled based on the temperature of indoor air or return air instead of the temperature of the conditioned air. Therefore, even when the first detection unit is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, in this air conditioning system, the reliability of air conditioning can be further improved.

An air conditioning system according to a third aspect is the air conditioning system according to the second aspect, wherein the second detection unit detects the temperature of the return air.
Here, the temperature of the return air is detected by the second detector. When the first detection unit that detects the temperature of the conditioned air supplied from the air conditioning unit is abnormal, the air conditioning unit is controlled by the air conditioning control unit based on the return air temperature detected by the second detection unit. In a conventional air conditioning system, control is performed to stop the operation of the air conditioning unit when the first detection unit is abnormal. Therefore, in the conventional air conditioning system, when the first detection unit is abnormal, the supply of the conditioned air to the indoor is stopped. However, in this air conditioning system, when the first detection unit is abnormal, the air conditioning unit is controlled based on the temperature of the return air instead of the temperature of the conditioned air. Therefore, even when the first detection unit is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, in this air conditioning system, the reliability of air conditioning can be further improved.

An air conditioning system according to a fourth aspect is the air conditioning system according to the second or third aspect, further comprising an air volume adjusting unit. The air volume adjusting unit adjusts the air volume of the conditioned air supplied to the room. The air volume adjusting unit sets the air volume of the conditioned air supplied to the room to a constant amount when the first detecting unit is abnormal.
Here, when the first detection unit is abnormal, the air volume of the conditioned air supplied to the room is set to a constant level by the air volume control unit. Therefore, indoor air can be harmonized only by controlling the supply amount of conditioned air in the air conditioner without adjusting the supply amount of conditioned air in the air amount adjuster. That is, indoor air can be harmonized by considering only the supply amount of conditioned air in the air conditioning unit without considering the adjustment of the conditioned air amount in the air volume adjusting unit. For this reason, in this air conditioning system, indoor air can be easily harmonized.

An air conditioning system according to a fifth aspect is the air conditioning system according to the fourth aspect, wherein the second detection unit detects the temperature of the indoor air in the vicinity of the air volume adjustment unit.
Here, the temperature of the indoor air in the vicinity of the air volume adjusting unit that adjusts the amount of the conditioned air supplied to the room is detected by the second detecting unit. When the first detection unit that detects the temperature of the conditioned air supplied from the air conditioning unit is abnormal, the air conditioning unit controls the air conditioning based on the temperature of the indoor air in the vicinity of the air volume adjustment unit detected by the second detection unit. Controlled by the unit. In a conventional air conditioning system, control is performed to stop the operation of the air conditioning unit when the first detection unit is abnormal. Therefore, in the conventional air conditioning system, when the first detection unit is abnormal, the supply of conditioned air to the indoor is stopped. However, in this air conditioning system, when the first detection unit is abnormal, the air conditioning unit is controlled based on the temperature of indoor air in the vicinity of the air volume adjusting unit instead of the temperature of the conditioned air. Therefore, even when the first detection unit is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, in this air conditioning system, the reliability of air conditioning can be further improved.

An air conditioning system according to a sixth aspect is the air conditioning system according to any one of the second to fifth aspects, further comprising a fan coil unit. The fan coil unit harmonizes indoor air. The second detector detects the temperature of indoor air in the vicinity of the fan coil unit.
Here, the temperature of the indoor air in the vicinity of the fan coil unit that harmonizes the indoor air is detected by the second detector. When the first detection unit that detects the temperature of the conditioned air supplied from the air conditioning unit is abnormal, the air conditioning unit controls the air conditioning based on the temperature of the indoor air in the vicinity of the fan coil unit detected by the second detection unit. Controlled by the unit. In a conventional air conditioning system, control is performed to stop the operation of the air conditioning unit when the first detection unit is abnormal. Therefore, in the conventional air conditioning system, when the first detection unit is abnormal, the supply of conditioned air to the indoor is stopped. However, in this air conditioning system, when the first detection unit is abnormal, the air conditioning unit is controlled based on the temperature of indoor air in the vicinity of the fan coil unit instead of the temperature of the conditioned air. Therefore, even when the first detection unit is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, in this air conditioning system, the reliability of air conditioning can be further improved.

An air conditioning system according to a seventh aspect is the air conditioning system according to any one of the second to sixth aspects, wherein the first detection unit further detects the humidity of the conditioned air. The second detector further detects the humidity of the return air.
Here, the humidity of the conditioned air supplied from the air conditioning unit is detected by the first detection unit. Further, the humidity of the return air is detected by the second detection unit. When the first detection unit that detects the humidity of the conditioned air supplied from the air conditioning unit is abnormal, the air conditioning unit is controlled by the air conditioning control unit based on the humidity of the return air detected by the second detection unit. In a conventional air conditioning system, control is performed to stop the operation of the air conditioning unit when the first detection unit is abnormal. Therefore, in the conventional air conditioning system, when the first detection unit is abnormal, the supply of conditioned air to the indoor is stopped. However, in this air conditioning system, when the first detection unit is abnormal, the air conditioning unit is controlled based on the humidity of the return air instead of the humidity of the conditioned air. Therefore, even when the first detection unit is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, in this air conditioning system, the reliability of air conditioning can be further improved.

  The air-conditioning control apparatus according to claim 8 is an air-conditioning control apparatus connected to the air-conditioning apparatus, the first detection apparatus, and the second detection apparatus in order to condition indoor air, and includes a determination unit and a control unit. And. The air conditioner introduces return air from the room. In addition, the air conditioner harmonizes the return air and transforms it into conditioned air. Furthermore, the air conditioning apparatus supplies conditioned air to the room. The 1st detection part is detecting the air state of the conditioned air supplied indoors. This air state is information indicating the state of the air to be detected, and is, for example, the temperature and humidity of the air to be detected. The 2nd detection part has detected the air state of indoor air or return air. The determination unit determines whether or not the first detection device is normal. When the first detection device is normal, the control unit controls the air conditioner based on the detection result of the first detection device. Furthermore, the control unit controls the air conditioner based on the detection result of the second detection device when the first detection device is abnormal.

  Here, the return air from the room is introduced into the air conditioner. The return air is harmonized by the air conditioner and transformed into conditioned air. The conditioned air is supplied indoors by an air conditioner. The air condition of the conditioned air supplied to the room is detected by the first detection device. The air condition of indoor air or return air is detected by the second detection device. The air conditioner is controlled by the air conditioning control device based on the detection result of the first detection device when the first detection unit is normal. When the first detection device is abnormal, the air conditioner is controlled by the air conditioning control device based on the detection result of the second detection device.

  Here, when the first detection device is abnormal, the air conditioning device is controlled by the air conditioning control unit based on the detection result of the second detection device. In the conventional air conditioning control device, control is performed to stop the operation of the air conditioner when the first detection device is abnormal. Therefore, when the first detection device is abnormal, the supply of conditioned air to the indoor is stopped. However, in this air conditioning control device, when the first detection device is abnormal, the air conditioning device is controlled based on the detection result of the second detection device instead of the detection result of the first detection device. Therefore, even when the first detection device is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, if this air-conditioning control apparatus is used, the reliability of air conditioning can be improved.

  A control method for an air conditioning system according to claim 9 is a control method for an air conditioning system including an air conditioning device, a first detection device, and a second detection device for conditioning indoor air, wherein One step and a second step are provided. The air conditioner introduces return air from the room. In addition, the air conditioner harmonizes the return air and transforms it into conditioned air. Furthermore, the air conditioning apparatus supplies conditioned air to the room. The 1st detection part is detecting the air state of the conditioned air supplied indoors. This air state is information indicating the state of the air to be detected, and is, for example, the temperature and humidity of the air to be detected. The 2nd detection part has detected the air state of indoor air or return air. In the first step, it is determined whether or not the first detection device is normal. In the second step, when the first detection device is normal, the air conditioning device is controlled based on the detection result of the first detection device. Further, in the second step, when the first detection device is abnormal, the air conditioner is controlled based on the detection result of the second detection device.

  Here, when the first detection device is abnormal, the air conditioning device is controlled by the air conditioning control unit based on the detection result of the second detection device. In the control method of the conventional air conditioning system, control is performed to stop the operation of the air conditioning apparatus when the first detection device is abnormal. Therefore, when the first detection device is abnormal, the supply of conditioned air to the indoor is stopped. However, in this air conditioning system control method, when the first detection device is abnormal, the air conditioning device is controlled based on the detection result of the second detection device instead of the detection result of the first detection device. Therefore, even when the first detection device is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, if the control method of this air conditioning system is used, the reliability of air conditioning can be improved.

  The air conditioning system according to claim 10 is an air conditioning system for conditioning indoor air, and includes an air conditioning unit, a first detection unit, a second detection unit, and an air conditioning control unit. Yes. The air conditioner introduces return air from the room. Moreover, the air conditioning unit harmonizes the return air and transforms the return air into conditioned air. Furthermore, the air conditioning unit supplies conditioned air to the room. The first detection unit detects the air state of the return air. This air state is information indicating the state of the air to be detected, and is, for example, the temperature and humidity of the air to be detected. The 2nd detection part is detecting the air state of the conditioned air supplied indoors, or indoor air. The air conditioning control unit controls the air conditioning unit based on the detection result of the first detection unit when the first detection unit is normal. Further, the air conditioning control unit controls the air conditioning unit based on the detection result of the second detection unit when the first detection unit is abnormal.

  In this air conditioning system, return air from the room is introduced into the air conditioning unit. The return air is harmonized by the air conditioning unit and transformed into conditioned air. The conditioned air is supplied indoors by the air conditioning unit. The air state of the return air is detected by the first detection unit. The conditioned air supplied to the room or the air state of the room air is detected by the second detection unit. The air conditioning unit is controlled by the air conditioning control unit based on the detection result of the first detection unit when the first detection unit is normal. When the first detection unit is abnormal, the air conditioning unit is controlled by the air conditioning control unit based on the detection result of the second detection unit.

  Here, when the first detection unit is abnormal, the air conditioning unit is controlled by the air conditioning control unit based on the detection result of the second detection unit. In a conventional air conditioning system, control is performed to stop the operation of the air conditioning unit when the first detection unit is abnormal. Therefore, in the conventional air conditioning system, when the first detection unit is abnormal, the supply of conditioned air to the indoor is stopped. However, in this air conditioning system, when the first detection unit is abnormal, the air conditioning unit is controlled based on the detection result of the second detection unit instead of the detection result of the first detection unit. Therefore, even when the first detection unit is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, in this air conditioning system, the reliability of air conditioning can be improved.

An air conditioning system according to an eleventh aspect is the air conditioning system according to the tenth aspect, in which the first detector detects the temperature of the return air. The second detector detects the temperature of the conditioned air or the indoor air.
The temperature of the return air is detected by the first detector. Moreover, the temperature of the conditioned air or the indoor air is detected by the second detection unit. When the first detection unit that detects the temperature of the return air is abnormal, the air conditioning unit is controlled by the air conditioning control unit based on the temperature of the conditioned air or indoor air detected by the second detection unit. In a conventional air conditioning system, control is performed to stop the operation of the air conditioning unit when the first detection unit is abnormal. Therefore, in the conventional air conditioning system, when the first detection unit is abnormal, the supply of conditioned air to the indoor is stopped. However, in this air conditioning system, when the first detection unit is abnormal, the air conditioning unit is controlled based on the temperature of conditioned air or indoor air instead of the temperature of the return air. Therefore, even when the first detection unit is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, in this air conditioning system, the reliability of air conditioning can be further improved.

An air conditioning system according to a twelfth aspect is the air conditioning system according to the eleventh aspect, further including a fan coil unit. The fan coil unit harmonizes indoor air. The second detector detects the temperature of indoor air in the vicinity of the fan coil unit.
Here, the temperature of the indoor air in the vicinity of the fan coil unit that harmonizes the indoor air is detected by the second detector. When the first detection unit that detects the temperature of the return air is abnormal, the air conditioning unit is controlled by the air conditioning control unit based on the temperature of the indoor air in the vicinity of the fan coil unit detected by the second detection unit. In a conventional air conditioning system, control is performed to stop the operation of the air conditioning unit when the first detection unit is abnormal. Therefore, in the conventional air conditioning system, when the first detection unit is abnormal, the supply of conditioned air to the indoor is stopped. However, in this air conditioning system, when the first detection unit is abnormal, the air conditioning unit is controlled based on the temperature of indoor air in the vicinity of the fan coil unit instead of the temperature of the return air. Therefore, even when the first detection unit is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, in this air conditioning system, the reliability of air conditioning can be further improved.

An air conditioning system according to a thirteenth aspect is the air conditioning system according to any one of the tenth to twelfth aspects, wherein the first detection unit further detects the humidity of the return air. The second detector further detects the humidity of the conditioned air.
The humidity of the return air is detected by the first detector. Further, the humidity of the conditioned air supplied from the air conditioning unit is detected by the second detection unit. When the first detection unit that detects the humidity of the return air is abnormal, the air conditioning unit is controlled by the air conditioning control unit based on the humidity of the conditioned air detected by the second detection unit. In the conventional air conditioning system, control is performed to stop the operation of the air conditioning unit when the first detection unit is abnormal. Therefore, in the conventional air conditioning system, when the first detection unit is abnormal, the supply of conditioned air to the indoor is stopped. However, in this air conditioning system, when the first detection unit is abnormal, the air conditioning unit is controlled based on the humidity of the conditioned air instead of the humidity of the return air. Therefore, even when the first detection unit is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, in this air conditioning system, the reliability of air conditioning can be further improved.

  The air-conditioning control apparatus according to claim 14 is an air-conditioning control apparatus connected to the air-conditioning apparatus, the first detection apparatus, and the second detection apparatus in order to condition indoor air, and includes a determination unit and a control unit. And. The air conditioner introduces return air from the room. In addition, the air conditioner harmonizes the return air and transforms it into conditioned air. Furthermore, the air conditioning apparatus supplies conditioned air to the room. The first detection unit detects the air state of the return air. This air state is information indicating the state of the air to be detected, and is, for example, the temperature and humidity of the air to be detected. The 2nd detection part is detecting the air state of the conditioned air supplied indoors, or indoor air. The determination unit determines whether or not the first detection device is normal. When the first detection device is normal, the control unit controls the air conditioner based on the detection result of the first detection device. Furthermore, the control unit controls the air conditioner based on the detection result of the second detection device when the first detection device is abnormal.

  Here, the return air from the room is introduced into the air conditioner. The return air is harmonized by the air conditioner and transformed into conditioned air. The conditioned air is supplied indoors by an air conditioner. The air state of the return air is detected by the first detection device. The conditioned air supplied to the room or the air state of the room air is detected by the second detection device. The air conditioner is controlled by the air conditioning control device based on the detection result of the first detection device when the first detection unit is normal. When the first detection device is abnormal, the air conditioner is controlled by the air conditioning control device based on the detection result of the second detection device.

  Here, when the first detection device is abnormal, the air conditioner is controlled by the air conditioning control unit based on the detection result of the second detection device. In the conventional air conditioning control device, control is performed to stop the operation of the air conditioner when the first detection device is abnormal. Therefore, when the first detection device is abnormal, the supply of conditioned air to the indoor is stopped. However, in this air conditioning control device, when the first detection device is abnormal, the air conditioning device is controlled based on the detection result of the second detection device instead of the detection result of the first detection device. Therefore, even when the first detection device is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, if this air-conditioning control apparatus is used, the reliability of air conditioning can be improved.

  A control method for an air conditioning system according to claim 15 is a control method for an air conditioning system including an air conditioning device, a first detection device, and a second detection device to harmonize indoor air. One step and a second step are provided. The air conditioner introduces return air from the room. In addition, the air conditioner harmonizes the return air and transforms it into conditioned air. Furthermore, the air conditioning apparatus supplies conditioned air to the room. The first detection unit detects the air state of the return air. This air state is information indicating the state of the air to be detected, and is, for example, the temperature and humidity of the air to be detected. The second detector detects an air condition of the conditioned air supplied to the room or the air in the room. In the first step, it is determined whether or not the first detection device is normal. In the second step, when the first detection device is normal, the air conditioning device is controlled based on the detection result of the first detection device. Further, in the second step, when the first detection device is abnormal, the air conditioner is controlled based on the detection result of the second detection device.

  Here, when the first detection device is abnormal, the air conditioner is controlled by the air conditioning control unit based on the detection result of the second detection device. In the control method of the conventional air conditioning system, control is performed to stop the operation of the air conditioning apparatus when the first detection device is abnormal. Therefore, when the first detection device is abnormal, the supply of conditioned air to the indoor is stopped. However, in this air conditioning system control method, when the first detection device is abnormal, the air conditioning device is controlled based on the detection result of the second detection device instead of the detection result of the first detection device. Therefore, even when the first detection device is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, if the control method of this air conditioning system is used, the reliability of air conditioning can be improved.

As described above, according to the present invention, the following effects can be obtained.
In the air conditioning system according to the first aspect, even when the first detection unit is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, in this air conditioning system, the reliability of air conditioning can be improved.
In the air conditioning system according to claim 2, even when the first detection unit is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, in this air conditioning system, the reliability of air conditioning can be further improved.

In the air conditioning system according to the third aspect, even when the first detection unit is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, in this air conditioning system, the reliability of air conditioning can be further improved.
In the air conditioning system according to the fourth aspect, the indoor air can be harmonized by considering only the supply amount of the conditioned air in the air conditioning unit without considering the adjustment of the conditioned air amount in the air volume adjusting unit. For this reason, in this air conditioning system, indoor air can be easily harmonized.

In the air conditioning system according to the fifth aspect, even when the first detection unit is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, in this air conditioning system, the reliability of air conditioning can be further improved.
In the air conditioning system according to the sixth aspect, even when the first detection unit is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, in this air conditioning system, the reliability of air conditioning can be further improved.

In the air conditioning system according to the seventh aspect, even when the first detection unit is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, in this air conditioning system, the reliability of air conditioning can be further improved.
In the air conditioning control device according to the eighth aspect, even when the first detection device is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, if this air-conditioning control apparatus is used, the reliability of air conditioning can be improved.

In the control method of the air conditioning system according to the ninth aspect, even when the first detection device is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, if the control method of this air conditioning system is used, the reliability of air conditioning can be improved.
In the air conditioning system according to the tenth aspect, even when the first detection unit is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, in this air conditioning system, the reliability of air conditioning can be improved.

In the air conditioning system according to the eleventh aspect, even when the first detection unit is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, in this air conditioning system, the reliability of air conditioning can be further improved.
In the air conditioning system according to the twelfth aspect, even when the first detection unit is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, in this air conditioning system, the reliability of air conditioning can be further improved.

In the air conditioning system according to the thirteenth aspect, even when the first detection unit is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, in this air conditioning system, the reliability of air conditioning can be further improved.
In the air conditioning control device according to the fourteenth aspect, even when the first detection device is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, if this air-conditioning control apparatus is used, the reliability of air conditioning can be improved.

  In the control method of the air conditioning system according to the fifteenth aspect, even when the first detection device is abnormal, the possibility that supply of conditioned air into the room stops is reduced. For this reason, if the control method of this air conditioning system is used, the reliability of air conditioning can be improved.

One embodiment of the present invention is employed.
<Configuration of air conditioning system>
The air conditioning system 13 which consists of a some installation apparatus provided with the controller 31 which concerns on one Embodiment of this invention is shown in FIG. 1 and FIG. The air conditioning system 13 is a package system in which the air han 14, the VAV 16 and the exhaust fan 51 are made into one pack. The controller 31 in the air han 14 can complete the control in the pack. In addition, the controller 31 of the air conditioning system 13 is connected to a BAS (building automation system) which is a host system through a LonWorks network.

  The air han 14 is an air conditioner unit that has a main function of cooling or warming air supplied to the VAV 16 by obtaining cold water or hot water from a heat source device (not shown) and also has a humidifying function. The air han 14 includes a cooling unit 41, a heating unit 42, and a humidifying unit 43. The cooling unit 41 is supplied with cold water having a flow rate adjusted by the cold water valve 44. Hot water having a flow rate adjusted by the hot water valve 45 is passed through the heating unit 42. The humidifying unit 43 has a plurality of nozzles and sprays the steam adjusted by the humidifying valve 46.

Further, a controller 31 for controlling the valves 44, 45, 46, fans 47, 51, dampers 48, 49, 52, etc. of the air han 14 is disposed in the air han 14. The controller 31 further controls the VAV damper 62 and receives room temperature data from the VAV 16 via the VAV controller 61 of the VAV 16 described later.
An air supply fan 47 for sending out air conditioned by the cooling unit 41, the heating unit 42, and the humidifying unit 43 to the VAV 16, and an exhaust fan 51 for exhausting air from the room 80, the hallway, the toilet, etc. The inverter is controlled by 31. Further, the outside air introduction damper 48 for introducing outside air, the return air damper 49 provided in the duct for returning the air in the room 80 to the upstream side such as the cooling unit 41, and the exhaust amount are adjusted on the upstream side of the exhaust fan 51. The opening degree of the exhaust damper 52 is also adjusted by the controller 31.

  The VAV 16 is a facility device that adjusts the amount of air-conditioned air sent by the air supply fan 47 in the air han 14 and blows it out to the room 80. Here, a plurality of VAVs 16 are connected to one air hanger 14. The VAV 16 includes a VAV controller 61, a VAV damper 62, an indoor temperature sensor 63, an indoor humidity sensor 64, an air volume sensor (not shown), and the like. The VAV controller 61 is connected to the controller 31 via the local communication line 20 described later, and transmits the state of the VAV damper 62 and the like to the controller 31.

<Connection between Controller 31 in Air Hann 14 and VAV Controller 61>
The VAV controller 61 includes a communication IC corresponding to a LonWorks network called a “neuron chip”, and is connected to the local communication line 20 by a connection port 61a using the network function of the communication IC. That is, the VAV 16 is a facility device corresponding to the LonWorks network that is becoming an international standard for open control networks.

  The local communication line 20 is a twisted pair cable extending from the local communication connection port 31b among the two connection ports 31a and 31b of the controller 31. Communication using the local communication line 20 is based on the LonTalk protocol. Therefore, the VAV 16 can be adopted regardless of the manufacturer as long as it is compatible with the LonWorks network.

  The controller 31 includes the above-described local communication connection port 31b separately from the upper communication connection port 31a for communication with the higher system. Therefore, the VAV 16 is locally connected to the controller 31 in the air han 14 without going through the communication line 10 of the BAS LonWorks network, and constitutes the air conditioning system 13 in one pack together with the air han 14.

<Communication between the controller 31 in the air hung 14 and the VAV controller 61>
The controller 31 in the air han 14 transmits control data to the VAV controller 61 and receives monitoring data transmitted from the VAV controller 61. The control data includes start / stop commands, room temperature settings, air conditioning mode commands, and the like. The monitoring data is data such as indoor temperature measurement values, indoor humidity measurement values, VAV status, VAV required air volume, VAV measurement air volume, and VAV opening state.

The controller 31 receives status data from the valves 44, 45, 46, the dampers 48, 49, 52, and the fans 47, 51, as well as temperature sensors 50, 55, Predetermined data is sent from humidity sensors 53 and 56 (not shown).
<BAS including air conditioning system 13>
As described above, the air conditioning system 13 including the controller 31 can control and monitor the air han 14 and the VAV 16 independently. However, when viewed from a host system called BAS, it is one of many subsystems. The BAS is an open system using the technology of the LonWorks network, and a configuration in which a plurality of subsystems such as an air conditioning system 13 and a building management equipment management device 12 are connected to a communication line 10 via a gateway 12a. It has become. Subsystems such as the air conditioning system 13 are controlled and monitored by the facility management device 12. The facility management apparatus 12 is connected to an outside air temperature sensor 71 and an outside air humidity sensor 72 installed outside the building in order to acquire the outside air temperature and the outside air humidity necessary for controlling the outside air cooling.

  The controller 31 of the air conditioning system 13 is connected to the communication line 10 of the LonWorks network through a higher communication connection port 31a for communication with the higher system. The host communication connection port 31a is a connection port that uses the network function of the communication IC corresponding to the LonWorks network, like the local communication connection port 31b and the connection port 61a of the VAV controller 61 described above. The controller 31 connected to the facility management apparatus 12 via the communication line 10 and the gateway 12a by the upper communication connection port 31a exchanges the following information with the facility management apparatus 12.

  First, the controller 31 receives a command to the air han 14 or VAV 16 sent from the facility management apparatus 12 (see the white arrow 91 in FIG. 1). Specific commands include a start / stop command for the air hanger 14, a warm-up command, a cold / hot water valve control command, a humidification valve control command, an outdoor air cooling command, an indoor temperature measurement command, and the like. In response to such a command, the controller 31 controls the air han 14 and the VAV 16 and collects necessary monitoring data.

  In addition, the controller 31 transmits monitoring data related to the state and settings of the air han 14 and the VAV 16 to the facility management apparatus 12 (see the white arrow 92 in FIG. 1). Specifically, operation mode state, supply fan operation state, supply fan alarm state, supply air inverter output, supply air temperature measurement value, return air damper opening, cold water valve opening, indoor measurement temperature, indoor measurement humidity And monitoring data such as VAV status.

<Control of the air conditioning system 13>
In the air conditioning system 13, the controller 31 issues an on / off command, a warming up command, a cold / hot water valve control command, a humidifying valve control command, an outside air cooling command, an indoor temperature measurement command, and the like. After being connected to the higher-level equipment management apparatus 12 via the communication line 10 and the gateway 12a of the LonWorks network, the controller 31 performs various controls according to commands from the equipment management apparatus 12. Even in a state where it is not connected to the system, the controller 31 can independently execute various controls. In this case, various controls are executed in accordance with operation inputs to the controller 31 from a remote controller (not shown) or a main body operation switch.

Hereinafter, the cold / hot water valve control, the humidification valve control, and the outside air cooling control will be described in detail.
[Cold / hot water valve control]
In the present air conditioning system 13, the opening degree of the cold water valve 44 or the hot water valve 45 is normally controlled so that the measured value of the supply air temperature sensor 50 becomes equal to the supply air temperature set value. However, when an abnormality occurs in the supply air temperature sensor 50, the opening degree of the cold water valve 44 or the hot water valve 45 is controlled according to the flowchart shown in FIG.

  In FIG. 3, in step S <b> 11, the controller 31 confirms whether the return air temperature sensor 55 is normal. As a result of the confirmation in step S11, if the return air temperature sensor 55 is normal, the process proceeds to step S12. As a result of the confirmation in step S11, if the return air temperature sensor 55 is not normal, the process proceeds to step S16. In step S12, the controller 31 calculates the average of the temperature setting values of all the VAVs 16. In step S13, the controller 31 sets the average value as the return air temperature set value. In step S14, the controller 31 forcibly lowers the temperature setting value of each VAV 16 by 5 ° C. in the case of cooling, and forcibly increases the temperature setting value of each room 80 by 5 ° C. in the case of heating. Fully open the VAV damper 62. In step S15, the controller 31 controls the opening degree of the cold water valve 44 or the hot water valve 45 so that the measured value of the return air temperature sensor 55 becomes equal to the return air temperature set value. In step S16, the controller 31 confirms which of the indoor temperature sensors 63 provided in each VAV 16 is normal. As a result of the confirmation in step S16, if any of the indoor temperature sensors 63 provided in each VAV 16 is normal, the process proceeds to step S17. If none of the indoor temperature sensors 63 provided in each VAV 16 is normal as a result of the confirmation in step S16, the process proceeds to step S21. In step S <b> 17, the controller 31 selects the normal room temperature sensor 63 having the smallest address number. In step S18, the controller 31 sets the temperature setting value of the VAV 16 corresponding to the indoor temperature sensor 63 as the return air temperature setting value. In step S19, the controller 31 forcibly lowers the temperature setting value of each VAV 16 by 5 ° C. in the case of cooling, and forcibly increases the temperature setting value of each room 80 by 5 ° C. in the case of heating. Fully open the VAV damper 62. In step S20, the controller 31 controls the opening degree of the cold water valve 44 or the hot water valve 45 so that the measured value of the indoor temperature sensor 63 becomes equal to the return air temperature set value. In step S21, the controller 31 stops the air hung 14.

[Humidification valve control]
In the present air conditioning system 13, the humidifying valve 46 is usually set so that the supply air dew point temperature set value becomes equal to the supply air dew point temperature obtained from the measurement value of the supply air temperature sensor 50 and the measurement value of the supply air humidity sensor 53. Be controlled. However, if an abnormality occurs in at least one of the supply air temperature sensor 50 and the supply air humidity sensor 53, the return air humidity setting value set in advance for the sensor failure is obtained from the measurement value of the return air humidity sensor 56. The humidification valve 46 is controlled to be equal to the humidity. Further, when an abnormality occurs in the return air humidity sensor 56, the indoor humidity set value (which is also set in advance in the event of a sensor failure) in any of the rooms 80 is obtained from the measured value of the indoor humidity sensor 64. The humidification valve 46 is controlled so as to be equal to.

[Outside air cooling control]
In the air conditioning system 13, the return air enthalpy is normally calculated from the measured value of the return air temperature sensor 55 and the measured value of the return air humidity sensor 56, and the measured value of the outside air temperature sensor 71 and the measurement of the outside air humidity sensor 72 are calculated. The enthalpy of outside air is calculated from the value. When the return air enthalpy is larger than the outside air enthalpy, the outside air cooling control is performed. However, if an abnormality occurs in at least one of the return air temperature sensor 55 and the return air humidity sensor 56, the outside air cooling control is performed according to the flowchart shown in FIG. In the outside air cooling control, the controller 31 controls the opening degree of the outside air introduction damper 48 so that the supply air temperature setting value is equal to the measured value of the supply air temperature sensor 50. At this time, the cold water valve 44 is fully closed.

  In FIG. 4, in step S <b> 31, the controller 31 confirms whether both the indoor temperature sensor 63 and the indoor humidity sensor 64 provided in any one of the VAVs 16 are normal. As a result of the confirmation in step S31, if both the sensors 63 and 64 provided in any one of the VAVs 16 are normal, the process proceeds to step S32. As a result of the confirmation in step S31, if both the sensors 63 and 64 provided in any VAV 16 are not normal, the process is terminated. In step S <b> 32, the controller 31 selects the sensors 63 and 64 that are provided in the VAV 16 having the normal sensors 63 and 64 with the smallest address number. In step S33, the controller 31 calculates the enthalpy of room air from the measured value of the indoor temperature sensor 63 and the measured value of the indoor humidity sensor 64. In step S34, the enthalpy of the room air is compared with the enthalpy of the outside air to determine whether or not the outside air cooling is performed.

Further, if an abnormality occurs in at least one of the outside air temperature sensor 71 and the outside air humidity sensor 72, the outside air cooling control is prohibited. The abnormality of the outside air temperature sensor 71 and the outside air humidity sensor 72 is determined when the outside air temperature measurement value and the outside air humidity measurement value exceed the specified ranges.
<Characteristics of the air conditioning system 13>
(1)
In the air conditioning system 13 according to the present embodiment, when the supply air temperature sensor 50 is abnormal, the air han 14 is controlled based on the detection result of the return air temperature sensor 55 instead of the detection result of the supply air temperature sensor 50. The When the return air temperature sensor 55 is abnormal, the cold water valve 44 or the hot water valve 45 is controlled based on the detection result of the indoor temperature sensor 63 instead of the detection result of the return air temperature sensor 55. Therefore, even when the supply air temperature sensor 50 is abnormal, and even when the return air temperature sensor 55 is abnormal, the possibility of stopping the supply of conditioned air into the room is reduced. For this reason, in this air conditioning system 13, the reliability of air conditioning can be improved.

(2)
In the air conditioning system 13 according to the present embodiment, when the supply air temperature sensor 50 is abnormal, the VAV damper 62 is fully opened, and the air volume of the conditioned air supplied to the room 80 is a constant amount. Therefore, the air in the room 80 can be harmonized only by controlling the return air temperature in the air hanger 14. That is, the air in the room 80 can be harmonized by considering only the return air temperature in the air han 14 without considering the adjustment of the conditioned air volume in the VAV damper 62. For this reason, in this air conditioning system 13, the air in the room 80 can be easily harmonized.

(3)
In the air conditioning system 13 according to the present embodiment, when the supply air humidity sensor 53 is abnormal, the air han 14 is controlled based on the return air humidity of the return air humidity sensor 56 instead of the humidity of the conditioned air. Therefore, even when the supply air humidity sensor 53 is abnormal, the possibility that supply of conditioned air to the room 80 stops is reduced. For this reason, in this air conditioning system 13, the reliability of air conditioning can be further improved.

(4)
In the air conditioning system 13 according to the present embodiment, when an abnormality occurs in at least one of the return air temperature sensor 55 and the return air humidity sensor 56, is the outside air cooling control performed based on the indoor temperature sensor 63 and the indoor humidity sensor 64? Judgment is made. For this reason, in this air conditioning system 13, the reliability of air conditioning can be further improved.

<Other embodiments>
Although the present invention has been described above, the specific configuration is not limited to the above embodiment, and can be changed without departing from the scope of the invention.
(A)
In the air conditioning system 13 according to the previous embodiment, the VAV damper 62 is fully opened by operating the temperature setting value of the VAV 16, but the controller 31 has a function of forcibly opening the VAV damper 62 fully. If so, the VAV damper 62 may be fully opened by the function. In this way, control can be performed more easily.

(B)
In the air conditioning system 13 according to the previous embodiment, the indoor temperature sensor 63 provided in the return air temperature sensor 55 and the VAV 16 is substituted for the supply air temperature sensor 50, but the air conditioning system includes a fan coil unit. If the air temperature sensor 50 is abnormal, the indoor temperature sensor of the fine coil unit may be substituted. In this way, the reliability of the air conditioning system 13 can be further improved.

(C)
In the cold / hot water valve control of the air conditioning system 13 according to the previous embodiment, the average of the temperature setting values of all the VAVs 16 is set as the return air temperature setting value in step S13. The temperature setting value may be the return air temperature setting value. In this way, when the supply air temperature sensor 50 is abnormal, the cold / hot water valve control can be performed more simply.

(D)
In the cold / hot water valve control of the air conditioning system 13 according to the previous embodiment, in step S18, the temperature setting value of the VAV 16 corresponding to the normal indoor temperature sensor 63 having the smallest address number is set as the return air temperature setting value. However, instead of this, the temperature setting value of the VAV 16 corresponding to the one with the largest address number may be set as the return air temperature setting value, or the temperature setting value of a specific VAV may be set as the return air temperature setting value. Further, an average value of the temperature setting values of all the VAVs 16 may be set as the return air temperature setting value.

(E)
In the outside air cooling control of the air conditioning system 13 according to the previous embodiment, when an abnormality occurs in at least one of the return air temperature sensor 55 and the return air humidity sensor 56, the indoor temperature sensor 63 and the indoor humidity sensor 64 are replaced. However, when a relatively large difference is observed between the return air temperature sensor 55 and the room temperature sensor 63, a correction value for correcting the difference may be taken into account. In this way, even when at least one of the return air temperature sensor 55 and the return air humidity sensor 56 has an abnormality, the outside air can be cooled at a more appropriate timing.

  INDUSTRIAL APPLICABILITY The air conditioning system and the air conditioning control device according to the present invention can improve the reliability of air conditioning and are useful for air conditioning such as buildings and improvements.

1 is a schematic diagram of an air conditioning system and a building network system including a controller according to an embodiment of the present invention. The instrumentation block schematic of an air conditioning system. The flowchart showing the flow of the cold / hot water valve control at the time of supply air temperature sensor abnormality. The flowchart showing the flow which performs the external air cooling control judgment at the time of abnormality in a return air temperature sensor and a return air humidity sensor.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Communication line 12 Building management equipment 12a Gateway 13 Air conditioning system 14 Air Han 16 VAV
20 Local communication line 31 Controller 31a, 31b, 61a Connection port 41 Cooling part 42 Heating part 43 Humidifying part 44 Chilled water valve 45 Hot water valve 46 Humidifying valve 47 Supply air fan 48 Outside air introduction damper 49 Return air damper 50 Supply air temperature sensor 51 Exhaust Fan 52 Exhaust damper 53 Supply air humidity sensor 55 Return air temperature sensor 56 Return air humidity sensor 61 VAV controller 62 VAV damper 63 Indoor temperature sensor 64 Indoor humidity sensor 71 Outside air temperature sensor 72 Outside air humidity sensor 80 Room

Claims (15)

An air conditioning system (13) for conditioning the air in the room (80),
An air conditioner (14) for introducing return air from the room (80), harmonizing and converting the return air into conditioned air, and supplying the conditioned air to the room (80);
A first detector (50, 53) for detecting an air state of the conditioned air supplied to the room (80);
A second detector (55, 56, 63, 64) for detecting the air state of the room (80) or the return air;
When the first detector (50, 53) is normal, the air conditioner (14) is controlled based on the detection result of the first detector (50, 53), and the first detector (50, 53). An air conditioning control unit (31) for controlling the air conditioning unit (14) based on the detection result of the second detection unit (55, 56, 63, 64) when
An air conditioning system (13) comprising: The first detector (50) detects the temperature of the conditioned air,
The second detector (55, 63) detects the temperature of the air in the room (80) or the return air.
The air conditioning system (13) according to claim 1. The second detector (55) detects the temperature of the return air.
The air conditioning system (13) according to claim 2. An air volume adjusting unit (62) for adjusting the air volume of the conditioned air supplied to the room (80);
The air volume adjustment unit (62) sets the air volume of the conditioned air supplied to the room (80) to a constant amount when the first detection unit (50) is abnormal.
The air conditioning system (13) according to claim 2 or 3. The second detector (63) detects the temperature of the air in the room (80) in the vicinity of the air volume adjuster (62).
The air conditioning system (13) according to claim 4. A fan coil unit that harmonizes the air in the room (80);
The second detector detects a temperature of the indoor air in the vicinity of the fan coil unit;
The air conditioning system (13) according to any one of claims 2 to 5. The first detection unit (53) further detects the humidity of the conditioned air,
The second detector (56, 64) further detects the humidity of the return air.
The air conditioning system (13) according to any one of claims 2 to 6. In order to harmonize the air in the room (80), an air conditioner that introduces return air from the room (80), harmonizes the return air and transforms it into conditioned air, and supplies the conditioned air to the room (80). (14) and a first detection device (50, 53) for detecting an air state of the conditioned air supplied to the room (80) and a second detection device for detecting an air state of the indoor air or the return air. An air conditioning control device (31) connected to (55, 56, 63, 64),
A determination unit for determining whether or not the first detection device (50, 53) is normal;
When the first detection device (50, 53) is normal, the air conditioner (14) is controlled based on the detection result of the first detection device (50, 53), and the first detection device (50, 53) is abnormal. A controller that controls the air conditioner (14) based on detection results of the second detection devices (55, 56, 63, 64),
An air conditioning control device (31). In order to harmonize the air in the room (80), an air conditioner that introduces return air from the room (80), harmonizes the return air and transforms it into conditioned air, and supplies the conditioned air to the room (80). (14) and a first detection device (50, 53) for detecting an air state of the conditioned air supplied to the room (80) and a first detector for detecting an air state of the room (80) or the return air. A control method of an air conditioning system comprising two detection devices (55, 56, 63, 64),
A first step of determining whether the first detection device (50, 53) is normal;
When the first detection device (50, 53) is normal, the air conditioner (14) is controlled based on the detection result of the first detection device (50, 53), and the first detection device (50, 53) is abnormal. Sometimes a second step of controlling the air conditioner (14) based on the detection result of the second detector (55, 56, 63, 64);
An air conditioning system control method comprising: An air conditioning system (13) for conditioning the air in the room (80),
An air conditioner (14) for introducing return air from the room (80), harmonizing and converting the return air into conditioned air, and supplying the conditioned air to the room (80);
A first detector (55, 56) for detecting the air state of the return air;
A second detector (63, 64) for detecting an air condition of the conditioned air supplied to the room (80) or the air in the room (80);
When the first detector (55, 56) is normal, the air conditioner (14) is controlled based on the detection result of the first detector (55, 56), and the first detector (55, 56). An air conditioning control unit (31) for controlling the air conditioning unit (14) based on the detection result of the second detection unit (63, 64) at the time of abnormality,
An air conditioning system (13) comprising: The first detector (55) detects the temperature of the return air,
The second detector (63) detects the temperature of the conditioned air or the indoor air.
The air conditioning system (13) according to claim 10. A fan coil unit that harmonizes the air in the room (80);
The second detector detects a temperature of the indoor air in the vicinity of the fan coil unit;
The air conditioning system (13) according to claim 11. The first detector (56) detects the humidity of the return air,
The second detector (64) detects the humidity of the conditioned air;
Air conditioning system (13) according to any of claims 10 to 12. In order to harmonize the air in the room (80), an air conditioner that introduces return air from the room (80), harmonizes the return air and transforms it into conditioned air, and supplies the conditioned air to the room (80). (14) and a first detection device (55, 56) for detecting an air state of the return air and a first detector for detecting an air state of the conditioned air supplied to the room (80) or the air in the room (80). An air conditioning control device (31) connected to the two detection devices (63, 64),
A determination unit for determining whether or not the first detection device (55, 56) is normal;
When the first detector (55, 56) is normal, the air conditioner (14) is controlled based on the detection result of the first detector (55, 56), and the first detector (55, 56) is abnormal. Sometimes a control unit for controlling the air conditioner (14) based on the detection result of the second detection device (63, 64);
An air conditioning control device (31). In order to harmonize the air in the room (80), an air conditioner that introduces return air from the room (80), harmonizes the return air and transforms it into conditioned air, and supplies the conditioned air to the room (80). (14) and a first detection device (55, 56) for detecting the air state of the return air, and a first detector for detecting the air state of the conditioned air supplied to the room (80) or the air in the room (80). A control method of an air conditioning system comprising two detection devices (63, 64),
A first step of determining whether the first detection device (55, 56) is normal;
When the first detector (55, 56) is normal, the air conditioner (14) is controlled based on the detection result of the first detector (55, 56), and the first detector (55, 56) is abnormal. Sometimes a second step of controlling the air conditioner (14) based on the detection results of the second detectors (63, 64);
An air conditioning system control method comprising:

Images