Air conditioning system

Abstract

An air conditioning system includes: a temperature adjustment section configured to adjust a temperature of a first heat medium and to adjust a temperature of a second heat medium to a target temperature by exchanging heat between the first heat medium and the second heat medium; a plurality of thermal appliances supplied with the second heat medium from the temperature adjustment section and each configured to cool or heat a space; a plurality of flow regulators respectively connected to the plurality of thermal appliances, and configured to control flow rates of the second heat medium flowing through the plurality of connected thermal appliances such that an indoor temperature of a target space reaches a set temperature; and a controller configured to monitor load factors of the plurality of flow regulators, the load factors corresponding to the flow rates of the second heat medium, and control the target temperature such that a load factor of at least one flow regulator among the plurality of flow regulators is greater than or equal to a target load factor.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to an air conditioning system.BACKGROUND ART

[0002] Patent Document 1 discloses a heating apparatus including a heat pump unit, a heating unit connected to the heat pump unit and configured to adjust the temperature of temperature-controlled water, and a floor heating panel to which the temperature-controlled water is supplied from the heating unit.RELATED-ART DOCUMENTSPATENT DOCUMENTS

[0003] Patent Document 1: Japanese Laid-Open Patent Publication No. 2012-172933SUMMARY OF THE INVENTIONPROBLEM TO BE SOLVED BY THE INVENTION

[0004] As described in Patent Document 1 with respect to the floor heating panel to which temperature-controlled water is supplied, in an air conditioning system configured to cool or heat a space by supplying a heat medium from a single heat source to a plurality of thermal appliances, it has been studied to control the plurality of thermal appliances such that the temperature of each of the plurality of thermal appliances becomes a set temperature. However, a technology for controlling the supply temperature of a heat medium to improve operating efficiency has not been studied.

[0005] The present disclosure provides an air conditioning system that improves operating efficiency by efficiently supplying a heat medium to thermal appliances.MEANS TO SOLVE THE PROBLEM

[0006] An air conditioning system according to a first aspect includes a temperature adjustment section configured to adjust a temperature of a first heat medium and to adjust a temperature of a second heat medium to a target temperature by exchanging heat between the first heat medium and the second heat medium; a plurality of thermal appliances supplied with the second heat medium from the temperature adjustment section and each configured to cool or heat a space; a plurality of flow regulators respectively connected to the plurality of thermal appliances, and configured to control flow rates of the second heat medium flowing through the plurality of connected thermal appliances such that an indoor temperature of a target space reaches a set temperature; and a controller configured to monitor load factors of the plurality of flow regulators, the load factors corresponding to the flow rates of the second heat medium, and control the target temperature such that a load factor of at least one flow regulator among the plurality of flow regulators is greater than or equal to a target load factor.

[0007] In the air conditioning system according to the first aspect, operating efficiency can be improved by efficiently supplying the heat medium to the thermal appliances.

[0008] An air conditioning system according to a second aspect is the air conditioning system according to the first aspect, further including a plurality of temperature regulators connected to the plurality of flow regulators and configured to control the plurality of connected flow regulators, wherein each of the plurality of thermal appliances may be configured to cool or heat a different target space.

[0009] An air conditioning system according to a third aspect is the air conditioning system according to the first aspect, further including a plurality of temperature regulators connected to the plurality of flow regulators and configured to control the plurality of connected flow regulators, wherein at least two thermal appliances among the plurality of thermal appliances may be configured to cool or heat a same target space.

[0010] An air conditioning system according to a fourth aspect is the air conditioning system according to the first aspect, further including a temperature regulator configured to control at least two flow regulators connected to respective thermal appliances of the plurality of thermal appliances.

[0011] An air conditioning system according to a fifth aspect is the air conditioning system according to any one of the first to fourth aspects, wherein, in a case where none of the load factors of the plurality of flow regulators reaches the target load factor, the controller may perform control such that the target temperature increases in a cooling operation and the target temperature decreases in a heating operation.

[0012] An air conditioning system according to a sixth aspect is the air conditioning system according to any one of the first to fifth aspects, wherein, in a case where at least one of the load factors of the plurality of flow regulators reaches the target load factor and the indoor temperature of the target space does not reach the set temperature, the controller may perform control such that the target temperature decreases in a cooling operation and the target temperature increases in a heating operation.

[0013] An air conditioning system according to a seventh aspect is the air conditioning system according to any one of the first to sixth aspects, wherein, in a case where an indoor temperature of a first target space cooled or heated by a thermal appliance, to which a flow regulator whose load factor is greater than or equal to the target load factor is connected, does not reach the set temperature, the controller may perform control such that a load factor of a flow regulator connected to a thermal appliance in a second target space adjacent to the first target space increases.

[0014] An air conditioning system according to an eighth aspect is the air conditioning system according to the seventh aspect, wherein, in a case where the indoor temperature of the first target space does not reach the set temperature after the controller performs control such that the load factor of the flow regulator connected to the thermal appliance in the second target space increases, the controller may perform control such that the target temperature decreases in a cooling operation and the target temperature increases in a heating operation.

[0015] An air conditioning system according to a ninth aspect is the air conditioning system according to the first aspect, wherein the controller may control the target temperature in a case where an indoor temperature of a first target space cooled or heated by a thermal appliance to which a flow regulator whose load factor is greater than or equal to the target load factor is connected does not reach the set temperature and a rate of change of the indoor temperature of the first target space is less than or equal to a first rate of change.

[0016] An air conditioning system according to a tenth aspect is the air conditioning system according to the first aspect, wherein a first thermal appliance and a second thermal appliance of the plurality of thermal appliances may cool or heat a same target space that is a third target space, and in a case where a load factor of a flow regulator connected to the first thermal appliance is greater than or equal to the target load factor, a load factor of a flow regulator connected to the second thermal appliance is less than the target load factor, and an indoor temperature of the third target space does not reach the set temperature, the controller may perform control such that the load factor of the flow regulator connected to the second thermal appliance increases.

[0017] An air conditioning system according to an eleventh aspect is the air conditioning system according to any one of the first to tenth aspects, wherein, when the set temperature in the target space is changed to a high temperature value in a heating operation, when the set temperature in the target space is changed to a low temperature value in a cooling operation, or when a stopped thermal appliance starts operating, the controller may determine an adjustment range of the temperature adjustment section for the target temperature based on a temperature difference between the temperature of the target space and the set temperature.BRIEF DESCRIPTION OF THE DRAWINGS

[0018] [FIG. 1] FIG. 1 is a diagram illustrating an outline of a configuration of an air conditioning system according to an embodiment; [FIG. 2] FIG. 2 is a flow diagram illustrating processing performed by the air conditioning system according to the embodiment; [FIG. 3] FIG. 3 is a diagram illustrating an outline of a configuration of an air conditioning system according to a first modification of the embodiment; [FIG. 4] FIG. 4 is a diagram illustrating an outline of a configuration of an air conditioning system according to a second modification of the embodiment; and [FIG. 5] FIG. 5 is a flow diagram illustrating processing according to a third modification of the embodiment. MODE FOR CARRYING OUT THE INVENTION

[0019] Embodiments will be described below with reference to the accompanying drawings. Note that, in the specification and the drawings of the embodiments, components having substantially the same or corresponding functional configurations are denoted by the same reference numerals, and redundant descriptions thereof may be omitted. For ease of understanding, the scale of each part in the drawings may be different from the actual scale.

[0020] An air conditioning system according to an embodiment will be described. The air conditioning system according to the embodiment includes a temperature adjustment section configured to adjust a temperature of a first heat medium and to adjust a temperature of a second heat medium to a target temperature by exchanging heat between the first heat medium and the second heat medium. Further, the air conditioning system according to the embodiment includes a plurality of thermal appliances supplied with the second heat medium from the temperature adjustment section and each configured to cool or heat a space. Further, the air conditioning system according to the embodiment includes a plurality of flow regulators respectively connected to the plurality of thermal appliances, and configured to control flow rates of the second heat medium flowing through the plurality of connected thermal appliances such that an indoor temperature of a target space reaches a set temperature. Further, the air conditioning system according to the embodiment includes a controller configured to monitor load factors of the plurality of flow regulators, the load factors corresponding to the flow rates of the second heat medium, and control the target temperature such that a load factor of at least one flow regulator among the plurality of flow regulators is greater than or equal to a target load factor. The controller of the air conditioning system according to the embodiment controls the target temperature such that the load factor of the at least one valve among the plurality of flow regulators is greater than or equal to the target load factor, thereby allowing a total load factor obtained by adding the load factors of the respective flow regulators to be increased.

[0021] Further, the air conditioning system according to the embodiment includes a plurality of temperature regulators connected to the plurality of flow regulators and configured to control the plurality of connected flow regulators. Further, in the air conditioning system according to the embodiment, each of the plurality of thermal appliances is configured to cool or heat a different target space.

[0022] Further, the air conditioning system according to the embodiment will be described from another aspect. The air conditioning system according to the embodiment includes a temperature adjustment section configured to adjust a temperature of a heat medium to a target temperature. Further, the air conditioning system according to the embodiment includes a plurality of thermal appliances supplied with the heat medium from the temperature adjustment section and each configured to cool or heat a space. Further, the air conditioning system according to the embodiment includes a plurality of valves respectively connected to the plurality of thermal appliances, and configured to control flow rates of the heat medium flowing through the plurality of connected thermal appliances such that an indoor temperature of a target space reaches a set temperature. Further, the air conditioning system according to the embodiment includes a controller configured to monitor load factors of the plurality of valves, the load factors corresponding to the flow rates of the heat medium, and control the target temperature such that a load factor of at least one valve among the plurality of valves is greater than or equal to a target load factor. The controller of the air conditioning system according to the embodiment controls the target temperature such that the load factor of the at least one valve among the plurality of valves is greater than or equal to the target load factor, thereby allowing a total load factor obtained by adding the load factors of the respective valves to be increased.

[0023] Further, the air conditioning system according to the embodiment includes a plurality of temperature regulators connected to the plurality of valves and configured to control the plurality of connected valves. Further, in the air conditioning system according to the embodiment, each of the plurality of thermal appliances is configured to cool or heat a different target space.

[0024] FIG. 1 is a diagram illustrating an outline of a configuration of an air conditioning system 1, which is an example of the air conditioning system according to the present embodiment. The air conditioning system 1 is an air conditioning system configured to adjust the temperatures of respective spaces RM1, RM2, and RM3 in a building H.

[0025] The building H is, for example, a building or a general house. Further, each of the space RM1, the space RM2, and the space RM3 is, for example, a room. Note that, in the air conditioning system according to the present embodiment, each of the spaces to be cooled or air-conditioned are, for example, a living room, a kitchen, a toilet, a hallway, a conference room, a hall, or the like.

[0026] The air conditioning system 1 includes a temperature adjustment section 10, a thermal appliance 21, a thermal appliance 22, a thermal appliance 23, a valve 31, a valve 32, a valve 33, a controller 40, a temperature regulator 51, a temperature regulator 52, and a temperature regulator 53. Further, the valve 31, the valve 32, and the valve 33 are controlled by the temperature regulator 51, the temperature regulator 52, and the temperature regulator 53, respectively. Further, the thermal appliance 21, the thermal appliance 22, and the thermal appliance 23 cool or heat different spaces in the building H. Components of the air conditioning system 1 will be described in detail. The air conditioning system 1 cools or heats each space with a heat medium RF1 heat-exchanged with the heat medium RF2. In other words, the air conditioning system 1 is an indirect-expansion-type air conditioning system.[Temperature Adjustment Section 10]

[0027] The temperature adjustment section 10 adjusts the temperature of the heat medium RF1 to a target temperature Thw and supplies the heat medium RF1. The temperature adjustment section 10 includes an outdoor unit 11, a heat exchanger 12, and a pump 13.(Outdoor Unit 11)

[0028] The outdoor unit 11 supplies the heat medium RF2 adjusted to a predetermined temperature to the heat exchanger 12. The outdoor unit 11 includes a compressor, an expansion valve, and a heat exchanger. The outdoor unit 11 is provided outside the building H. The outdoor unit 11 cools or heats the heat medium RF2 by exchanging heat with air outside the building H.

[0029] The heat medium RF2 is a refrigerant such as a fluorocarbon refrigerant represented by, for example, a hydrochlorofluorocarbon (HCFC) or a hydrofluorocarbon (HFC).

[0030] In a case where the outdoor unit 11 supplies the high-temperature heat medium RF2 to the heat exchanger 12, that is, in the case of a heating operation, the heat medium RF2 in a gaseous state is compressed by the compressor and supplied to the heat exchanger 12. Then, the outdoor unit 11 recovers the heat medium RF2 that has turned into a liquid state after being subjected to heat exchange in the heat exchanger 12. The outdoor unit 11 reduces the pressure of the liquid-state heat medium RF2 by the expansion valve, exchanges heat with outside air by the heat exchanger to obtain the heat medium RF2 in a gaseous state, and compresses the gaseous-state heat medium RF2 again by the compressor.

[0031] In a case where the outdoor unit 11 supplies the low-temperature heat medium RF2 to the heat exchanger 12, that is, in the case of a cooling operation, the heat medium RF2 in a gaseous state is compressed by the compressor and supplied to the heat exchanger of the outdoor unit 11. Then, the outdoor unit 11 performs heat exchange in its heat exchanger, reduces the pressure of the liquid-state heat medium RF2 by the expansion valve, and supplies it to the heat exchanger 12. The outdoor unit 11 recovers the heat medium RF2 that has turned into a gaseous state after being subjected to heat exchange in the heat exchanger 12. The outdoor unit 11 compresses the heat medium RF2 in a gaseous state again by the compressor.

[0032] The outdoor unit 11 is controlled by the controller 40. In the outdoor unit 11, for example, a target temperature and a flow rate of the heat medium RF2 are set by the controller 40.(Heat Exchanger 12)

[0033] The heat exchanger 12 exchanges heat between the heat medium RF1 and the heat medium RF2. The heat medium RF2 is, for example, water. Note that the heat medium RF1 is not limited to water and may be, for example, a liquid including antifreeze solution or the like. The heat medium RF1 may be gas such as air. The heat exchanger 12 is, for example, a plate-type, a spiral-type, or a double-tube-type heat exchanger.

[0034] The high-temperature heat medium RF2 supplied from the outdoor unit 11 to the heat exchanger 12 is cooled by the heat medium RF1 and returns to the outdoor unit 11. The heat medium RF1 is heated through heat exchange with the high-temperature heat medium RF2 and discharged from the heat exchanger 12.

[0035] The low-temperature heat medium RF2 supplied from the outdoor unit 11 to the heat exchanger 12 is heated by the heat medium RF1 and returns to the outdoor unit 11. The heat medium RF1 is cooled through heat exchange with the low-temperature heat medium RF2 and discharged from the heat exchanger 12.(Pump 13)

[0036] The pump 13 sends the heat medium RF1 to each of the thermal appliance 21, the thermal appliance 22, and the thermal appliance 23. The pump 13 is, for example, an axial flow pump.

[0037] The pump 13 is controlled by the controller 40. The flow rate and the like of the pump 13 is controlled, for example, by the controller 40.

[0038] The heat exchanger 12, the pump 13, and the controller 40 may be provided inside the outdoor unit 11.[Thermal Appliance 21, Thermal Appliance 22, and Thermal Appliance 23]

[0039] The thermal appliance 21, the thermal appliance 22, and the thermal appliance 23 cools or heats the spaces where they are respectively installed. Each of the thermal appliance 21, the thermal appliance 22, and the thermal appliance 23 is supplied with the heat medium RF1 from the temperature adjustment section 10. The thermal appliance 21, the thermal appliance 22, and the thermal appliance 23 use the supplied heat medium RF1 to cool or heat the spaces where they are respectively installed. Each of the thermal appliance 21, the thermal appliance 22, and the thermal appliance 23 is, for example, a radiator, a fan convector, a floor heating panel, or the like.

[0040] The thermal appliance 21 is provided in the space RM1. The thermal appliance 21 cools or heats the space RM1. The flow rate of the heat medium RF1 in the thermal appliance 21 is adjusted by the valve 31 provided between the thermal appliance 21 and the temperature adjustment section 10. When the flow rate of the heat medium RF1 is reduced by the valve 31, the cooling capacity or the heating capacity of the thermal appliance 21 decreases. Further, when the flow rate of the heat medium RF1 is increased by the valve 31, the cooling capacity or heating capacity of the thermal appliance 21 increases.

[0041] The thermal appliance 22 is provided in the space RM2. The thermal appliance 22 cools or heats the space RM2. The flow rate of the heat medium RF1 in the thermal appliance 22 is adjusted by the valve 32 provided between the thermal appliance 22 and the temperature adjustment section 10. When the flow rate of the heat medium RF1 is reduced by the valve 32, the cooling capacity or the heating capacity of the thermal appliance 22 decreases. Further, when the flow rate of the heat medium RF1 is increased by the valve 32, the cooling capacity or heating capacity of the thermal appliance 22 increases.

[0042] The thermal appliance 23 is provided in the space RM3. The thermal appliance 23 cools or heats the space RM3. The flow rate of the heat medium RF1 in the thermal appliance 23 is adjusted by the valve 33 provided between the thermal appliance 23 and the temperature adjustment section 10. When the flow rate of the heat medium RF1 is reduced by the valve 33, the cooling capacity or the heating capacity of the thermal appliance 23 decreases. Further, when the flow rate of the heat medium RF1 is increased by the valve 33, the cooling capacity or heating capacity of the thermal appliance 23 increases.[Valve 31, Valve 32, and Valve 33]

[0043] Each of the valve 31, the valve 32 and the valve 33 adjusts the flow rate of the heat medium RF1 flowing through a corresponding connected thermal appliance. Each of the valve 31, the valve 32 and the valve 33 is, for example, a control valve.

[0044] Each of the valve 31, the valve 32 and the valve 33 is an example of a flow regulator configured to control the flow rate of the heat medium RF1 flowing through the corresponding connected thermal appliance. For example, when the heat medium RF1 is gas such as air, the flow regulator configured to control the flow rate of the heat medium RF1 may be a damper.[Temperature Regulator 51, Temperature Regulator 52, and Temperature Regulator 53]

[0045] Each of the temperature regulator 51, the temperature regulator 52, and the temperature regulator 53 controls a corresponding valve such that an indoor temperature of a target space reaches a set temperature. Further, each of the temperature regulator 51, the temperature regulator 52, and the temperature regulator 53 transmits data to the controller 40. For example, the data may be transmitted from each of the temperature regulator 51, the temperature regulator 52, and the temperature regulator 53 to the controller 40 in a wired manner or wireless manner.

[0046] The temperature regulator 51 measures an indoor temperature Trm1 of the space RM1. Then, the temperature regulator 51 controls the valve 31 such that the measured indoor temperature Trm1 of the space RM1 becomes a set temperature Ttg1. For example, the temperature regulator 51 controls the opening degree of the valve 31 such that the indoor temperature Trm1 of the space RM1 becomes the set temperature Ttg1. Further, the temperature regulator 51 may control the opening and closing of the valve 31 such that the indoor temperature Trm1 of the space RM1 is within a range including the set temperature Ttg1. Further, the temperature regulator 51 acquires a load factor Pv1 of the valve 31. The load factor Pv1 is, for example, the opening degree of the valve 31 or the ratio of time during which the valve 31 is open per unit time. Then, the temperature regulator 51 transmits the acquired load factor Pv1 of the valve 31 to the controller 40.

[0047] The temperature regulator 52 measures an indoor temperature Trm2 of the space RM2. Then, the temperature regulator 52 controls the valve 32 such that the measured indoor temperature Trm2 of the space RM2 becomes a set temperature Ttg2. For example, the temperature regulator 52 controls the opening degree of the valve 32 such that the indoor temperature Trm2 of the space RM2 becomes the set temperature Ttg2. Further, the temperature regulator 52 may control the opening and closing of the valve 32 such that the indoor temperature Trm2 of the space RM2 is within a range including the set temperature Ttg2. Further, the temperature regulator 52 acquires a load factor Pv2 of the valve 32. The load factor Pv2 is, for example, the opening degree of the valve 32 or the ratio of time during which the valve 32 is open per unit time. Then, the temperature regulator 52 transmits the acquired load factor Pv2 of the valve 32 to the controller 40.

[0048] The temperature regulator 53 measures an indoor temperature Trm3 of the space RM3. Then, the temperature regulator 53 controls the valve 33 such that the measured indoor temperature Trm3 of the space RM3 becomes a set temperature Ttg3. For example, the temperature regulator 53 controls the opening degree of the valve 33 such that the indoor temperature Trm3 of the space RM3 becomes the set temperature Ttg3. Further, the temperature regulator 53 may control the opening and closing of the valve 33 such that the indoor temperature Trm3 of the space RM3 is within a range including the set temperature Ttg3. Further, the temperature regulator 53 acquires a load factor Pv3 of the valve 33. The load factor Pv3 is, for example, the opening degree of the valve 33 or the ratio of time during which the valve 33 is open per unit time. Then, the temperature regulator 53 transmits the acquired load factor Pv3 of the valve 33 to the controller 40.

[0049] The valve 31 adjusts the flow rate of the heat medium RF1 flowing through the thermal appliance 21. The valve 31 is controlled by the temperature regulator 51. The valve 31 is, for example, subjected to opening degree control or on / off control by the temperature regulator 51. The valve 31 receives valve opening degree information or an on / off signal from the temperature regulator 51 and operates.

[0050] The valve 32 adjusts the flow rate of the heat medium RF1 flowing through the thermal appliance 22. The valve 32 is controlled by the temperature regulator 52. The valve 32 is, for example, subjected to opening degree control or on / off control by the temperature regulator 52. The valve 32 receives valve opening degree information or an on / off signal from the temperature regulator 52 and operates.

[0051] The valve 33 adjusts the flow rate of the heat medium RF1 flowing through the thermal appliance 23. The valve 33 is controlled by the temperature regulator 53. The valve 33 is, for example, subjected to opening degree control or on / off control by the temperature regulator 53. The valve 33 receives valve opening degree information or an on / off signal from the temperature regulator 53 and operates.[Controller 40]

[0052] The controller 40 controls the air conditioning system 1. Specifically, the controller 40 performs control such that a set amount of the heat medium RF1 adjusted to the target temperature Thw is supplied from the temperature adjustment section 10. Specifically, the controller 40 sets the output of the outdoor unit 11 and the flow rate of the pump 13. Further, the controller 40 sets the target temperature Thw to a suitable value based on the load factor Pv1, the load factor Pv2, and the load factor Pv3. The controller 40 controls the target temperature Thw such that at least one of the load factor Pv1, the load factor Pv2, or the load factor Pv3 is greater than or equal to a target load factor Ptg.

[0053] The controller 40 collects the load factors of the valve 31, the valve 32 and the valve 33 from the temperature regulator 51, the temperature regulator 52 and the temperature regulator 53, respectively. The controller 40 monitors the load factors of the valve 31, the valve 32 and the valve 33 by collecting the load factors of the valve 31, the valve 32 and the valve 33 from the temperature regulator 51, the temperature regulator 52 and the temperature regulator 53, respectively. Specifically, the controller 40 acquires the load factor Pv1 of the valve 31 from the temperature regulator 51. Further, the controller 40 acquires the load factor Pv2 of the valve 32 from the temperature regulator 52. Further, the controller 40 acquires the load factor Pv3 of the valve 33 from the temperature regulator 53.

[0054] Note that the load factors of all the valve 31, the valve 32 and the valve 33 are monitored in the above example, but load factors of some of the valves may be monitored. For example, the controller of the air conditioning system according to the present embodiment may monitor load factors of some of a plurality of flow regulators. The controller of the air conditioning system according to the present embodiment may determine a flow regulator to be monitored based on a setting, for example.

[0055] The controller 40 controls the target temperature Thw such that at least one of the acquired load factor Pv1, the acquired load factor Pv2, or the acquired load factor Pv3 is greater than or equal to the target load factor Ptg.<Processing Performed by Air Conditioning System According to Embodiment>

[0056] Processing performed by the air conditioning system according to the present embodiment will be described in detail by using the air conditioning system 1, which is the example of the air conditioning system according to the present embodiment. FIG. 2 is a flow diagram illustrating the processing performed by the air conditioning system 1, which is the example of the air conditioning system according to the present embodiment.

[0057] The controller 40 of the air conditioning system 1 controls the target temperature Thw to be adjusted by the temperature adjustment section 10 such that a load factor of at least one valve of the plurality of valves is greater than or equal to the target load factor. Specifically, the controller 40 decreases the output of the temperature adjustment section 10 if none of the load factors of the valves reaches the target load factor. Specifically, the controller 40 performs control such that the target temperature Thw increases in the cooling operation and the target temperature Twh decreases in the heating operation.

[0058] Further, in a case where a load factor of at least one valve of the plurality of valves is greater than or equal to the target load factor and the indoor temperature of a target space having a thermal appliance installed, to which the valve whose load is greater than or equal to the target load factor is connected, does not reach a target temperature, the controller 40 increases the output of the temperature adjustment section 10. Specifically, the controller 40 performs control such that the target temperature Thw decreases in the cooling operation and the target temperature Twh increases in the heating operation.(Step S10)

[0059] When the processing is started, the controller 40 of the air conditioning system 1 acquires the load factors of the valve 31, the valve 32 and the valve 33 from the temperature regulator 51, the temperature regulator 52, and the temperature regulator 53, respectively. Specifically, the controller 40 acquires the load factor Pv1 of the valve 31 from the temperature regulator 51. Further, the controller 40 acquires the load factor Pv2 of the valve 32 from the temperature regulator 52. Further, the controller 40 acquires the load factor Pv3 of the valve 33 from the temperature regulator 53.(Step S20)

[0060] Next, the controller 40 determines whether at least one of the acquired load factor Pv1, the acquired load factor Pv2, or the acquired load factor Pv3 continues to be greater than or equal to the target load factor Ptg. In other words, the controller 40 determines whether load factors of one or more valves continue to be greater than or equal to the target load factor Ptg. Note that, in FIG. 2, an example in which the target load factor is 100% will be described. In a case where at least one of the load factor Pv1, the load factor Pv2, or the load factor Pv3 is greater than or equal to the target load factor Ptg (YES in step S20), the controller 40 causes the processing to proceed to step S30. If at least one of the load factor Pv1, the load factor Pv2, or the load factor Pv3 is not greater than or equal to the target load factor Ptg (NO in step S20), the controller 40 causes the processing to proceed to step S40. Although the target load factor Ptg is set to 100% in the flow, the target load factor Ptg is not necessarily 100% because of system restrictions or the like. The target load factor Ptg is not limited to 100% and may be set appropriately. For example, the target load factor Ptg may be set appropriately in a range of 80% to 100%. Further, for each of the load factor Pv1, the load factor Pv2, and the load factor Pv3, an average value over a predetermined period of time or the like may be used.(Step S30)

[0061] Next, the controller 40 determines whether the indoor temperature of a target space cooled or heated via a valve whose load factor continues to be greater than or equal to the target load factor has reached a target temperature. If the indoor temperature of the target space cooled or heated via the valve whose load factor continues to be greater than or equal to the target load factor has reached the target temperature (YES in step S30), the controller 40 causes the processing to proceed to step S80. If the indoor temperature of the target space cooled or heated via the valve whose load factor continues to be greater than or equal to the target load factor has not reached the target temperature (NO in step S30), the controller 40 causes the processing to proceed to step S50.(Step S40)

[0062] The controller 40 decreases the output of the temperature adjustment section 10. Specifically, in the heating operation, in order to decrease the output of the temperature adjustment section 10, the controller 40 decreases the target temperature Thw to be adjusted by the temperature adjustment section 10. In the cooling operation, in order to decrease the output of the temperature adjustment section 10, the controller 40 increases the target temperature Thw to be adjusted by the temperature adjustment section 10. After increasing the output of the temperature adjustment section 10, the controller 40 causes the processing to proceed to step S80.(Step S50)

[0063] The controller 40 determines whether there is a margin to increase a load factor of a valve in a target space (an adjacent space) (a second target space) that is adjacent to the target space (a first target space) cooled or heated via the valve whose load factor continues to be greater than or equal to the target load factor. In a case where there is the margin to increase the load factor of the valve in the target space (the adjacent space) (the second target space) that is adjacent to the target space (the first target space) (YES in step S50), the controller 40 causes the processing to proceed to step S60. In a case where there is no margin to increase the load factor of the valve in the target space (the adjacent space) (the second target space) that is adjacent to the target space (the first target space) (NO in step S50), the controller 40 causes the processing to proceed to step S70.(Step S60)

[0064] In a case where there is the margin to increase the load factor of the valve in the target space (the adjacent space) (the second target space) that is adjacent to the target space (the first target space) (YES in step S50), the controller 40 increases the load factor of the valve connected to a thermal appliance that cools or heats the target space (the adjacent space) (the second target space) that is adjacent to the target space (the first target space). Then, the controller 40 causes the processing to proceed to step S80.(Step S70)

[0065] In a case where there is no margin to increase the load factor of the valve in the target space (the adjacent space) (the second target space) that is adjacent to the target space (the first target space) (NO in step S50), the controller 40 increases the output of the temperature adjustment section 10. Specifically, in the case of the heating operation, in order to increase the output of the temperature adjustment section 10, the controller 40 increases the target temperature Thw to be adjusted by the temperature adjustment section 10. In the case of the cooling operation, in order to increase the output of the temperature adjustment section 10, the controller 40 decreases the target temperature Thw to be adjusted by the temperature adjustment section 10. After increasing the output of the temperature adjustment section 10, the controller 40 causes the processing to proceed to step S80.(Step S80)

[0066] The controller 40 determines whether to end the processing. If the controller 40 determines to end the processing (YES in step S80), the controller 40 ends the processing. If the controller 40 determines not to end the processing, that is, determines to continue the processing (NO in step S80), the controller 40 causes the processing to return to step S10 and repeats the processing.

[0067] As described above, in step S20 and the subsequent steps, the target temperature Thw to be adjusted by the temperature adjustment section 10 is set such that at least one of the load factors in the thermal appliances is greater than or equal to the target load factor. Thus, the temperature of the heat medium RF1 supplied from the temperature adjustment section 10 can be optimized. By optimizing the temperature of the heat medium RF1 supplied from the temperature adjustment section 10, the output of the temperature adjustment section 10 can be optimized.

[0068] Even if at least one of the load factor Pv1, the load factor Pv2, or the load factor Pv3 is greater than or equal to the target load factor Ptg in step S20, there may be a case where the indoor temperature of the first target space, which is the space RM1, the space RM2, or the RM3, does not reach the set temperature of the first target space. In the first target space, if the indoor temperature of the first target space does not reach the set temperature, the controller 40 may cause the indoor temperature of the first target space to reach the set temperature by performing control such that the load factor of the valve connected to the thermal appliance in the second target space that is adjacent to the first target space increases. Further, if the indoor temperature of the first target space does not reach the set temperature even after the controller 40 performs control such that the load factor of the valve connected to the thermal appliance in the second target space that is adjacent to the first target space increases, the controller 40 may increase the output of the temperature adjustment section 10.

[0069] Further, when a set temperature in any of the space RM1, the space RM2, and the space RM3 is changed to a high temperature value in the heating operation, the controller 40 may increase an adjustment range of the temperature adjustment section 10 for the target temperature Thw of the heat medium RF1. Further, when the set temperature in any of the space RM1, the space RM2, and the space RM3 is changed to a low temperature value in the cooling operation, the controller 40 may increase the adjustment range of the temperature adjustment section 10 for the target temperature Thw of the heat medium RF1. Further, when a stopped thermal appliance starts operating, the controller 40 may increase the adjustment range of the temperature adjustment section 10 for the target temperature Thw of the heat medium RF1.

[0070] Further, when the set temperature in any of the space RM1, the space RM2, and the space RM3 is changed to a high temperature value in the heating operation, the controller 40 may increase the target temperature Thw of the heat medium RF1 to be adjusted by the temperature adjustment section 10 by a predetermined value. Further, when a stopped thermal appliance starts operating in the heating operation, the controller 40 may increase the target temperature Thw of the heat medium RF1 to be adjusted by the temperature adjustment section 10 by a predetermined value.

[0071] Further, when a set temperature in a target space is changed to a low temperature value in the cooling operation, the controller 40 may decrease the target temperature Thw of the heat medium RF1 to be adjusted by the temperature adjustment section 10 by a predetermined value. Further, when a stopped thermal appliance starts operating in the cooling operation, the controller 40 may decrease the target temperature Thw of the heat medium RF1 to be adjusted by the temperature adjustment section 10 by a predetermined value. Each of the predetermined values may be determined based on a heat load and a heat dissipation characteristic in a space heated by a corresponding thermal appliance.

[0072] In other words, when a set temperature in a target space RM is changed to a high temperature value in the heating operation, when the set temperature in the target space RM is changed to a low temperature value in the cooling operation, or when a stopped thermal appliance starts operating, the controller 40 may determine the adjustment range of the temperature adjustment section 10 for the target temperature Thw based on a temperature difference between the temperature of the target space RM and the set temperature.

[0073] In the air conditioning system according to the present embodiment, the temperature of the thermal medium supplied from the temperature adjustment section can be optimized based on the load factors in the thermal appliances. Thus, the thermal medium can be efficiently supplied to the thermal appliances.

[0074] In the air conditioning system 1, which is the example of the air conditioning system according to the present embodiment, an example in which the three target spaces, the space RM1, the space RM2, and the space RM3, are air-conditioned has been described, but the number of target spaces to be air-conditioned by the air conditioning system according to the present embodiment is not limited to three. For example, the number of target spaces to be air-conditioned by the air conditioning system according to the present embodiment may be two or four or more. The same applies to the number of thermal appliances, the number of valves, and the number of temperature regulators of the air conditioning system according to the present embodiment.

[0075] Note that the heat medium RF2 is an example of a first heat medium and the heat medium RF1 is an example of a second heat medium.<Air Conditioning System According to First Modification of Embodiment>

[0076] In the air conditioning system 1, which is an example of the air conditioning system according to the embodiment, an example in which each of a plurality of thermal appliances cools or heats a different target space has been described. However, at least two thermal appliances of a plurality of thermal appliances may be configured to cool or heat the same target space.

[0077] FIG. 3 is a diagram illustrating an outline of a configuration of an air conditioning system 2, which is an example of an air conditioning system according to a first modification of the embodiment. In the following, configurations of the air conditioning system 2 different from those of the air conditioning system 1 will be mainly described, and the description of the air conditioning system 1 will be referred to for common matters and thus redundant description will be omitted.

[0078] The air conditioning system 2 cools or heats a space RM11 in a building H1 by a thermal appliance 121 and a thermal appliance 122. The thermal appliance 121 and the thermal appliance 122 are provided in the same space RM11. The thermal appliance 121 and the thermal appliance 122 cool or heat the same space RM11.

[0079] The flow rate of a heat medium RF1 flowing through the thermal appliance 121 is controlled by a valve 131 controlled by a temperature regulator 151. The flow rate of the heat medium RF1 flowing through the thermal appliance 122 is controlled by a valve 132 controlled by a temperature regulator 152.

[0080] The temperature regulator 151 measures an indoor temperature Trm11 of the space RM11. Then, the temperature regulator 151 controls the valve 131 such that the measured indoor temperature Trm11 of the space RM11 becomes a set temperature Ttg11. The temperature regulator 152 measures an indoor temperature Trm12 of the space RM11. The temperature regulator 152 controls the valve 132 such that the measured indoor temperature Trm12 of the space RM11 becomes a set temperature Ttg12.

[0081] Note that the set temperature Ttg12 may be the same as or different from the set temperature Ttg11.

[0082] A controller 140 acquires a load factor Pv11 of the valve 131, a load factor Pv12 of the valve 132, and a load factor Pv3 of a valve 33 from the temperature regulator 151, the temperature regulator 152, and a temperature regulator 53, respectively. Then, the controller 140 sets a target temperature Thw to a suitable value based on the load factor Pv11, the load factor Pv12, and the load factor Pv3.

[0083] In the air conditioning system according to the first modification of the embodiment, at least two thermal appliances of the plurality of thermal appliances cool or heat the same target space. Thus, a wider target space can be air-conditioned. In addition, the air conditioning system according to the first modification of the embodiment can form a temperature distribution in the target space. Further, in the target space having the temperature distribution, the air conditioning system according to the first modification of the embodiment can air-condition the target space with a suitable output.<Air Conditioning System According to Second Modification of Embodiment>

[0084] In the air conditioning system 2, which is an example of an air conditioning system according to the first modification of the embodiment, the thermal appliances are respectively connected to the plurality of valves. However, a thermal appliance may control at least two valves of a plurality of valves.

[0085] FIG. 4 is a diagram illustrating an outline of a configuration of an air conditioning system 3, which is an example of an air conditioning system according to a second modification of the embodiment. In the following, configurations of the air conditioning system 3 different from those of the air conditioning system 1 or the air conditioning system 2 will be mainly described, and the description of the air conditioning system 1 or the air conditioning system 2 will be referred to for common matters and thus redundant description will be omitted.

[0086] The air conditioning system 3 cools or heats a space RM11 in a building H1 by a thermal appliance 221 and a thermal appliance 222. The thermal appliance 221 and the thermal appliance 222 are provided in the same space RM11. The thermal appliance 221 and the thermal appliance 222 cool or heat the same space RM11.

[0087] The flow rate of a heat medium RF1 flowing through the thermal appliance 221 is controlled by a valve 231 controlled by a temperature regulator 251. The flow rate of the heat medium RF1 flowing through the thermal appliance 222 is controlled by a valve 232 controlled by the temperature regulator 251.

[0088] The temperature regulator 251 measures an indoor temperature Trm21 of the space RM11. The temperature regulator 251 controls each of the valve 231 and the valve 232 such that the measured indoor temperature Trm21 of the space RM11 becomes a set temperature Ttg21.

[0089] A controller 240 acquires a load factor Pv21 of the valve 231 and a load factor Pv22 of the valve 232 from the temperature regulator 251, and a load factor Pv3 of a valve 33 from a temperature regulator 53. Then, the controller 240 sets a target temperature Thw to a suitable value based on the load factor Pv21, the load factor Pv22, and the load factor Pv3.

[0090] In the air conditioning system according to the second modification of the embodiment, the temperature regulator controls at least two valves of the plurality of valves, and thus the system can be simplified.

[0091] In the processing performed by the air conditioning system 1 illustrated in FIG. 2, step S50 is performed for a valve provided in an adjacent space. However, step S50 may be performed in a similar manner for a valve of a thermal appliance configured to cool or heat the same target space as in the first modification or the second modification.

[0092] For example, the first modification will be described as an example. With respect to the thermal appliance 121 and the thermal appliance 122 configured to cool or heat the same target space RM11 (a third target space), for example, it is assumed that the load factor of the valve 131 connected to the thermal appliance 121 is greater than or equal to the target load factor and the load factor of the valve 132 connected to the thermal appliance 122 is less than the target load factor. In this case, if the indoor temperature of the target space RM11 (the third target space) does not reach the set temperature, the controller 140 may perform control such that the load factor of the valve 132 connected to the thermal appliance 122 increases. In the above example, the thermal appliance 121 is an example of a first thermal appliance, and the thermal appliance 122 is an example of a second thermal appliance. Note that the relationship between the thermal appliance 121 and the thermal appliance 122 may be reversed.

[0093] For example, the second modification will be described as an example. With respect to the thermal appliance 221 and the thermal appliance 222 configured to cool or heat the same target space RM11 (the third target space), for example, it is assumed that the load factor of the valve 231 connected to the thermal appliance 221 is greater than or equal to the target load factor and the load factor of the valve 232 connected to the thermal appliance 222 is less than the target load factor. In this case, if the indoor temperature of the target space RM11 (the third target space) does not reach the set temperature, the controller 240 may perform control such that the load factor of the valve 232 connected to the thermal appliance 222 increases. In the above example, the thermal appliance 221 is an example of the first thermal appliance, and the thermal appliance 222 is an example of the second thermal appliance. Note that the relationship between the thermal appliance 221 and the thermal appliance 222 may be reversed.<Air Conditioning System According to Third Modification of Embodiment>

[0094] Processing according to a third modification of the embodiment will be described in detail by using the air conditioning system 1, which is an example of the air conditioning system according to the embodiment. FIG. 5 is a flow diagram illustrating the processing according to the third modification of the embodiment.

[0095] In the air conditioning system 1, the processing according to the third modification includes step S150, instead of step S50 of the processing illustrated in FIG. 2. Note that the description of the steps other than step 150 will be omitted by referring to the foregoing description.(Step S150)

[0096] The controller 40 determines whether a rate of change (a time rate of change) of an indoor temperature of a target space RM is less than or equal to a first rate of change. If the rate of change (the time rate of change) of the indoor temperature of the target space RM is less than or equal to the first rate of change (YES in step S150), the controller 40 causes the processing to proceed to step S70 and increases the output of the temperature adjustment section 10. If the rate of change (time rate of change) of the indoor temperature of the target space RM is greater than the first rate of change (NO in step S150), the controller 40 causes the processing to proceed to step S80 and repeats the processing.

[0097] If the rate of change (time rate of change) of the indoor temperature of the target space RM is less than or equal to the first rate of change, for example, the temperature is considered to be stable. For example, the temperature of the target space RM changes not only by the amount of heat supplied from a thermal appliance provided in the target space RM, but also by the amount of heat supplied from a thermal appliance provided in an adjacent space or from another thermal appliance provided in the same target space RM. Therefore, by increasing the output of the temperature adjustment section 10 after the rate of change (the time rate of change) of the indoor temperature in the target space RM becomes less than or equal to the first rate of change, the amount of heat supplied from the thermal appliance provided in the adjacent space or from the other thermal appliance provided in the same target space RM can be effectively utilized.

[0098] The embodiment disclosed above includes, for example, the following aspects.

[0099] [Clause 1] An air conditioning system including: a temperature adjustment section configured to adjust a temperature of a heat medium to a target temperature; a plurality of thermal appliances supplied with the heat medium from the temperature adjustment section and each configured to cool or heat a space; a plurality of valves respectively connected to the plurality of thermal appliances, and configured to control flow rates of the heat medium flowing through the plurality of connected thermal appliances such that an indoor temperature of a target space reaches a set temperature; and a controller configured to monitor load factors of the plurality of valves, the load factors corresponding to the flow rates of the heat medium, and control the target temperature such that a load factor of at least one valve among the plurality of valves is greater than or equal to a target load factor.

[0100] [Clause 2] The air conditioning system according to clause 1, further including: a plurality of temperature regulators connected to the plurality of valves and configured to control the plurality of connected valves, wherein each of the plurality of thermal appliances is configured to cool or heat a different target space.

[0101] [Clause 3] The air conditioning system according to clause 1, further including: a plurality of temperature regulators connected to the plurality of valves and configured to control the plurality of connected valves, wherein at least two thermal appliances among the plurality of thermal appliances are configured to cool or heat a same target space.

[0102] [Clause 4] The air conditioning system according to clause 1, further including: a temperature regulator configured to control at least two valves of the plurality of valves.

[0103] [Clause 5] The air conditioning system according to clause 1, wherein, in a case where none of the load factors of the plurality of valves reaches the target load factor, the controller performs control such that the target temperature increases in a cooling operation and the target temperature decreases in a heating operation.

[0104] [Clause 6] The air conditioning system according to clause 1, wherein, in a case where at least one of the load factors of the plurality of valves reaches the target load factor and the indoor temperature of the target space does not reach the set temperature, the controller performs control such that the target temperature decreases in a cooling operation and the target temperature increases in a heating operation.

[0105] [Clause 7] The air conditioning system according to clause 1, wherein, in a case where an indoor temperature of a first target space cooled or heated by a thermal appliance, to which a valve whose load factor is greater than or equal to the target load factor is connected, does not reach the set temperature, the controller performs control such that a load factor of a valve connected to a thermal appliance in a second target space adjacent to the first target space increases.

[0106] [Clause 8] The air conditioning system according to clause 7, wherein, in a case where the indoor temperature of the first target space does not reach the set temperature after the controller performs control such that the load factor of the valve increases, the controller performs control such that the target temperature decreases in a cooling operation and the target temperature increases in a heating operation.

[0107] [Clause 9] The air conditioning system according to clause 1, wherein, when the set temperature in the target space is changed to a high temperature value in a heating operation, when the set temperature in the target space is changed to a low temperature value in a cooling operation, or when a stopped thermal appliance starts operating, the controller increases an adjustment range of the temperature adjustment section for the target temperature.

[0108] [Clause 10] The air conditioning system according to clause 1, wherein in a heating operation, when the set temperature in the target space is changed to a high temperature value or when a stopped thermal appliance starts operating, the controller increases the target temperature by a predetermined value, and in a cooling operation, when the set temperature in the target space is changed to a low temperature value or when the stopped thermal appliance starts operating, the controller decreases the target temperature by a predetermined value.

[0109] [Clause 11] The air conditioning system according to clause 10, wherein each of the predetermined values is determined based on a heat load and a heat dissipation characteristic in a space cooled or heated by a corresponding thermal appliance of the plurality of thermal appliances.

[0110] Although the embodiment has been described above, it will be understood that various changes can be made to the configurations and details without departing from the spirit and scope of the claims. Various modifications and improvements such as combinations or substitutions with some or all of other embodiments are possible.

[0111] This application is based on and claims priority to Japanese Patent Application No. 2023-170861, filed on September 29, 2023, the entire contents of which are incorporated herein by reference.DESCRIPTION OF THE REFERENCE NUMERALS

[0112] 1, 2, 3 air conditioning system 10 temperature adjustment section 11 outdoor unit 12 heat exchanger 13 pump 21, 22, 23, 121, 122, 221, 222 thermal appliance 31, 32, 33, 131, 132, 231, 232 valve 40, 140, 240 controller 51, 52, 53, 151, 152, 251 temperature regulator Pv1, Pv2, Pv3, Pv11, Pv12, Pv21, Pv22 load factor RF1, RF2 heat medium RM1, RM2, RM3, RM11 space Thw target temperature Trm1, Trm2, Trm3, Trm11, Trm12, Trm21 indoor temperature Ttg1, Ttg2, Ttg3, Ttg11, Ttg12, Ttg21 set temperature

Claims

1. An air conditioning system (1, 2, 3) comprising: a temperature adjustment section (10) configured to adjust a temperature of a first heat medium (RF2) and to adjust a temperature of a second heat medium (RF1) to a target temperature by exchanging heat between the first heat medium (RF2) and the second heat medium (RF1); a plurality of thermal appliances (21, 22, 23, 121, 122, 221, 222) supplied with the second heat medium (RF1) from the temperature adjustment section (10) and each configured to cool or heat a space; a plurality of flow regulators (31, 32, 33, 131, 132, 231, 232) respectively connected to the plurality of thermal appliances (21, 22, 23, 121, 122, 221, 222), and configured to control flow rates of the second heat medium (RF1) flowing through the plurality of connected thermal appliances (21, 22, 23, 121, 122, 221, 222) such that an indoor temperature of a target space reaches a set temperature; and a controller (40, 140, 240) configured to monitor load factors of the plurality of flow regulators (31, 32, 33, 131, 132, 231, 232), the load factors corresponding to the flow rates of the second heat medium (RF1), and control the target temperature such that a load factor of at least one flow regulator (31, 32, 33, 131, 132, 231, 232) among the plurality of flow regulators (31, 32, 33, 131, 132, 231, 232) is greater than or equal to a target load factor.

2. The air conditioning system (1) according to claim 1, further comprising: a plurality of temperature regulators (51, 52, 53) connected to the plurality of flow regulators (31, 32, 33) and configured to control the plurality of connected flow regulators (31, 32, 33), wherein each of the plurality of thermal appliances (21, 22, 23) is configured to cool or heat a different target space.

3. The air conditioning system (2, 3) according to claim 1, further comprising: a plurality of temperature regulators (53, 151, 152, 251, 252) connected to the plurality of flow regulators (33, 131, 132, 231, 232) and configured to control the plurality of connected flow regulators (33, 131, 132, 231, 232), wherein at least two thermal appliances (121, 122, 221, 222) among the plurality of thermal appliances (23, 121, 122, 221, 222) are configured to cool or heat a same target space.

4. The air conditioning system (3) according to claim 1, further comprising: a temperature regulator (251) configured to control at least two flow regulators (231, 232) connected to respective thermal appliances (221, 222) of the plurality of thermal appliances.

5. The air conditioning system (1, 2, 3) according to any one of claims 1 to 4, wherein, in a case where none of the load factors of the plurality of flow regulators (31, 32, 33, 131, 132, 231, 232) reaches the target load factor, the controller (40, 140, 240) performs control such that the target temperature increases in a cooling operation and the target temperature decreases in a heating operation.

6. The air conditioning system (1, 2, 3) according to any one of claims 1 to 5, wherein, in a case where at least one of the load factors of the plurality of flow regulators (31, 32, 33, 131, 132, 231, 232) reaches the target load factor and the indoor temperature of the target space does not reach the set temperature, the controller (40, 140, 240) performs control such that the target temperature decreases in a cooling operation and the target temperature increases in a heating operation.

7. The air conditioning system (1) according to any one of claims 1 to 6, wherein, in a case where an indoor temperature of a first target space cooled or heated by a thermal appliance to which a flow regulator (31, 32, 33) whose load factor is greater than or equal to the target load factor is connected does not reach the set temperature, the controller (40) performs control such that a load factor of a flow regulator (31, 32, 33) connected to a thermal appliance in a second target space adjacent to the first target space increases.

8. The air conditioning system (1) according to claim 7, wherein, in a case where the indoor temperature of the first target space does not reach the set temperature after the controller (40) performs control such that the load factor of the flow regulator (31, 32, 33) connected to the thermal appliance in the second target space increases, the controller (40) performs control such that the target temperature decreases in a cooling operation and the target temperature increases in a heating operation.

9. The air conditioning system (1, 2, 3) according to claim 1, wherein the controller (40, 140, 240) controls the target temperature in a case where an indoor temperature of a first target space cooled or heated by a thermal appliance to which a flow regulator (31, 32, 33, 131, 132, 231, 232) whose load factor is greater than or equal to the target load factor is connected does not reach the set temperature and a rate of change of the indoor temperature of the first target space is less than or equal to a first rate of change.

10. The air conditioning system (3) according to claim 1, wherein a first thermal appliance and a second thermal appliance of the plurality of thermal appliances cool or heat a same target space that is a third target space, and in a case where a load factor of a flow regulator (231, 232) connected to the first thermal appliance is greater than or equal to the target load factor, a load factor of a flow regulator (231, 232) connected to the second thermal appliance is less than the target load factor, and an indoor temperature of the third target space does not reach the set temperature, the controller (240) performs control such that the load factor of the flow regulator (231, 232) connected to the second thermal appliance increases.

11. The air conditioning system (1, 2, 3) according to any one of claims 1 to 10, wherein, when the set temperature in the target space is changed to a high temperature value in a heating operation, when the set temperature in the target space is changed to a low temperature value in a cooling operation, or when a stopped thermal appliance starts operating, the controller (40, 140, 240) determines an adjustment range of the temperature adjustment section (10) for the target temperature based on a temperature difference between the temperature of the target space and the set temperature.

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