Control method for environmental conditioning system, environmental conditioning system, and storage medium

Abstract

Provided are a control method for an environmental conditioning system, an environmental conditioning system, and a storage medium. In the environmental conditioning system, a first secondary refrigerant circulation loop of a heat pump system (1) and a second secondary refrigerant circulation loop of a gas system (2) are both connected to a first heat exchange device (3), the first secondary refrigerant circulation loop comprises a heat pump temperature regulation device (11) and an indoor terminal device (12), and the second secondary refrigerant circulation loop comprises a gas heating device (21). The method comprises: when the heat pump system (1) is in a heating mode and the gas system (2) is in a heat supplementing mode, acquiring a first liquid inlet temperature of the indoor terminal device (12) and a second liquid inlet temperature of the gas heating device (21); according to the first liquid inlet temperature and the second liquid inlet temperature, determining a target liquid outlet temperature of the gas heating device (21); and, according to the target liquid outlet temperature, controlling the gas heating device (21) to work, wherein in the heat supplementing mode, the heat pump system (1) is supplemented with heat by means of the gas heating device (21).

Description

Control method of environmental regulation system, environmental regulation system and storage medium

[0001] Related applications

[0002] This application claims priority to Chinese patent application No. 202311426762.3, filed on October 30, 2023, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application relates to the technical field of environmental regulation systems, and in particular to a control method for an environmental regulation system, an environmental regulation system, and a storage medium. Background Art

[0004] At present, many indoor heating systems use more than one heat source to provide heat. Some systems use air source heat pumps and gas heat sources. In the process of regulating the indoor environment with a dual heat source system, the air source heat pump and the gas heat source operate independently of each other. When the heat provided by the air source heat pump cannot meet the indoor heating needs, it will switch to the gas heat source to provide heat. This results in the air source heat pump's energy-saving and low-carbon capabilities being unable to be effectively utilized, wasting fuel energy.

[0005] Summary of the Invention

[0006] The main purpose of this application is to provide a control method for an environmental regulation system, an environmental regulation system and a storage medium, aiming to ensure indoor heating comfort while improving energy saving and low carbon effects.

[0007] To achieve the above objectives, the present application provides a control method for an environmental conditioning system, the environmental conditioning system comprising a first heat exchange device, a heat pump system, and a gas system, the heat pump system comprising a first refrigerant circulation loop, the gas system comprising a second refrigerant circulation loop, the first refrigerant circulation loop and the second refrigerant circulation loop both being connected to the first heat exchange device, the first refrigerant circulation loop comprising a heat pump temperature control device and an indoor terminal device, the second refrigerant circulation loop comprising a gas heating device, the control method for the environmental conditioning system comprising the following steps:

[0008] When the heat pump system is in heating mode and the gas system is in supplementary heating mode, obtaining a first inlet liquid temperature of the indoor terminal device and a second inlet liquid temperature of the gas heating device;

[0009] determining a target liquid outlet temperature of the gas heating device according to the first liquid inlet temperature and the second liquid inlet temperature; and

[0010] controlling the operation of the gas heating device according to the target liquid outlet temperature;

[0011] Wherein, in the heating supplement mode, heat is supplemented to the heat pump system through the gas heating device.

[0012] In one embodiment, the step of determining the target liquid outlet temperature of the gas heating device according to the first liquid inlet temperature and the second liquid inlet temperature includes:

[0013] When the first temperature difference between the maximum operating temperature of the gas heating device and the second liquid inlet temperature is greater than or equal to a first preset value, and the second temperature difference between the second liquid inlet temperature and the first liquid inlet temperature is greater than or equal to a second preset value, or when the second temperature difference between the second liquid inlet temperature and the first liquid inlet temperature is greater than or equal to a second preset value, the target value of the current liquid outlet temperature of the gas heating device is reduced to obtain the target liquid outlet temperature.

[0014] In one embodiment, the step of reducing the target value of the current liquid outlet temperature of the gas heating device to obtain the target liquid outlet temperature includes:

[0015] determining a temperature correction value according to the first inlet liquid temperature and the second inlet liquid temperature; and

[0016] The target value is reduced according to the temperature correction value to obtain the target liquid outlet temperature.

[0017] In one embodiment, the step of determining the temperature correction value according to the first inlet liquid temperature and the second inlet liquid temperature includes:

[0018] determining a second temperature difference between the second inlet liquid temperature and the first inlet liquid temperature; and

[0019] The temperature correction value is determined according to the difference between the second temperature difference value and the second preset value.

[0020] In one embodiment, after the step of obtaining the first liquid inlet temperature of the indoor terminal device and the second liquid inlet temperature of the gas heating device, the method further includes:

[0021] When the first temperature difference between the maximum operating temperature and the second liquid inlet temperature is less than the first preset value, or when the third temperature difference between the first liquid inlet temperature and the set temperature of the indoor terminal device is greater than or equal to the third preset value, the gas system is controlled to turn off the supplementary heat mode.

[0022] In one embodiment, the second secondary coolant circulation loop further includes a second fluid pump, and the second fluid pump is turned on in the supplementary heat mode. The step of controlling the gas system to turn off the supplementary heat mode includes:

[0023] The second fluid pump is controlled to be closed.

[0024] In one embodiment, before the step of obtaining the first liquid inlet temperature of the indoor terminal device and the second liquid inlet temperature of the gas heating device, the step further includes:

[0025] When the heat pump system is in heating mode and the gas system starts the supplementary heating mode, the gas heating device is controlled to operate according to the maximum operating temperature of the gas heating device so that the liquid outlet temperature of the gas heating device is greater than the set temperature of the indoor terminal device.

[0026] In one embodiment, the environmental conditioning system further includes a liquid supply module connected to the second refrigerant circulation loop, and before the step of obtaining the first liquid inlet temperature of the indoor terminal device and the second liquid inlet temperature of the gas heating device, the system further includes:

[0027] When the heat pump system is in heating mode, obtaining a state parameter, wherein the state parameter indicates whether the current heat of the indoor terminal device reaches the target heat;

[0028] When the state parameter meets the preset condition, obtaining the demand information of the liquid supply module;

[0029] When the liquid supply module does not have a liquid supply demand, controlling the gas system to start the supplementary heat mode; and

[0030] When the liquid supply module has a liquid supply demand, the gas system is controlled to turn off the heat supply mode, and the gas heating device is controlled to turn on to provide heat to the liquid supply module;

[0031] The preset condition indicates that the current heat does not reach the target heat.

[0032] In one embodiment, the state parameter includes the ambient temperature and the liquid inlet temperature of the indoor terminal device, and the preset condition includes at least one of the following conditions:

[0033] The ambient temperature is less than or equal to a preset ambient temperature; and

[0034] The temperature difference between the set temperature of the indoor terminal device and the inlet temperature of the indoor terminal device is greater than the preset temperature difference, or the temperature difference between the set temperature of the indoor terminal device and the inlet temperature of the indoor terminal device is greater than the preset temperature difference and lasts for a preset time.

[0035] In addition, to achieve the above-mentioned objectives, the present application further proposes an environmental conditioning system, comprising a control device, a first heat exchange device, a heat pump system, and a gas system, wherein the heat pump system comprises a first refrigerant circulation loop, and the gas system comprises a second refrigerant circulation loop, wherein both the first refrigerant circulation loop and the second refrigerant circulation loop are connected to the first heat exchange device, wherein the first refrigerant circulation loop comprises a heat pump temperature control device and an indoor terminal device, and the second refrigerant circulation loop comprises a gas heating device;

[0036] The heat pump system and the gas system are both connected to the control device, which includes: a memory, a processor, and a control program for the environmental conditioning system stored in the memory and runnable on the processor. When the control program for the environmental conditioning system is executed by the processor, the steps of the control method for the environmental conditioning system as described in any one of the above items are implemented.

[0037] In addition, in order to achieve the above-mentioned purpose, the present application also proposes a storage medium, on which a control program of the environmental control system is stored. When the control program of the environmental control system is executed by the processor, the steps of the control method of the environmental control system as described in any of the above items are implemented.

[0038] The present application proposes a control method for an environmental conditioning system, in which a heat pump system and a gas system are respectively provided with a heat exchange connection for a refrigerant circulation loop. When the heat pump system is in a heating mode and the gas system is in a heating supplement mode, in addition to the heat pump temperature control device providing heat for the indoor terminal equipment, the gas system can also supplement heat to the heat pump system. The heat of the gas system and the heat pump system are combined to jointly provide heat for the indoor terminal equipment. In this process, the target liquid outlet temperature is determined by combining the respective liquid inlet temperatures of the indoor terminal equipment and the gas heating device to control the operation of the gas heating device, which can ensure that the heat pump system can be used for heating under any working conditions, avoid using the gas system alone for heating, reduce the fuel resources used by the gas system, and the gas system can accurately provide the heat that is lacking in the indoor terminal equipment of the heat pump system, thereby ensuring the indoor heating comfort while improving energy saving and low carbon effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] FIG1 is a schematic diagram showing the structure and brine flow direction of an embodiment of the present application's environmental conditioning system when a liquid supply module is connected to a second brine circulation loop;

[0040] FIG2 is a schematic diagram of the structure and brine flow direction of another embodiment of the environmental conditioning system of the present application when the liquid supply module is connected to the second brine circulation loop;

[0041] FIG3 is a schematic diagram of the structure and brine flow direction of another embodiment of the environmental conditioning system of the present application when the liquid supply module is connected to the second brine circulation loop;

[0042] FIG4 is a schematic diagram of the structure and brine flow direction of an embodiment of the present application's environmental conditioning system when the liquid supply module is connected to the first brine circulation loop;

[0043] FIG5 is a schematic diagram of the structure and brine flow direction of another embodiment of the environmental conditioning system of the present application when the liquid supply module is connected to the first brine circulation loop;

[0044] FIG6 is a schematic diagram showing the structure and brine flow direction of another embodiment of the environmental conditioning system of the present application when the liquid supply module is connected to the first brine circulation loop;

[0045] FIG7 is a schematic diagram of the structure and brine flow direction of an embodiment of the environmental conditioning system of the present application when the liquid supply module is connected to the gas heating device and the first brine circulation loop;

[0046] FIG8 is a schematic diagram of the structure and brine flow direction of an embodiment of the present application's environmental conditioning system when the liquid supply module is heat-exchange connected to the heat exchange branch in the second brine circulation loop;

[0047] FIG9 is a schematic diagram of the structure and brine flow direction of another embodiment of the environmental conditioning system of the present application when the liquid supply module is heat-exchange connected to the heat exchange branch in the second brine circulation loop;

[0048] FIG10 is a schematic diagram of the structure and brine flow direction of another embodiment of the present application's environmental conditioning system when the liquid supply module is heat-exchange connected to the heat exchange branch in the second brine circulation loop;

[0049] FIG11 is a schematic diagram of the hardware structure involved in the operation of an embodiment of the environmental control system of the present application;

[0050] FIG12 is a flow chart of an embodiment of a control method for an environmental regulation system of the present application;

[0051] FIG13 is a flow chart of another embodiment of a control method for an environmental conditioning system of the present application;

[0052] FIG14 is a flow chart of another embodiment of a control method for an environmental conditioning system of the present application;

[0053] FIG15 is a flow chart of another embodiment of a control method for an environmental conditioning system of the present application;

[0054] FIG16 is a flow chart of another optional embodiment of the control method of the environmental conditioning system of the present application.

[0055] Description of Figure Numbers:

[0056] The realization of the objectives, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0057] It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application.

[0058] The present application proposes an environmental regulation system.

[0059] In one embodiment of the present application, referring to Figures 1 to 11, the environmental conditioning system includes a control device 100, a first heat exchange device 3, a heat pump system 1, and a gas system 2. The heat pump system 1 and the gas system 2 are both connected to the control device 100. The heat pump system 1 includes a first refrigerant circulation loop, which includes a heat pump temperature control device 11 and an indoor terminal device 12. The gas system 2 includes a second refrigerant circulation loop, which includes a gas heating device 21. The pipeline between the heat pump temperature control device 11 and the indoor terminal device 12, as well as the gas heating device 21, are both connected to the first heat exchange device 3.

[0060] The brine filled in the first brine circulation loop and the second brine circulation loop is water. In other embodiments, the first brine circulation loop and / or the second brine circulation loop may also be filled with other types of brine, such as a sodium chloride or calcium chloride saline solution, or an aqueous solution of an organic compound such as ethylene glycol or glycerol, etc.

[0061] The heat pump thermostat 11 utilizes the energy output from the heat pump unit to regulate the refrigerant temperature. It can be connected to a heat exchange component within the heat pump unit that releases cooling or heat. When the heat pump system 1 is turned on and in the heating mode, the heat pump thermostat 11 increases the refrigerant temperature in the first refrigerant circulation loop. When in the cooling mode, the heat pump thermostat 11 decreases the refrigerant temperature in the first refrigerant circulation loop.

[0062] The indoor terminal device 12 is used to adjust the energy output by the flowing refrigerant. The indoor terminal device 12 includes a convection heat exchange device or a radiation heat exchange device. For example, the indoor terminal device 12 may include a fan coil unit, a heat sink, a floor heater, etc.

[0063] The number of indoor terminal devices 12 can be one or more. The multiple indoor terminal devices 12 can be located in different indoor spaces, and the types of indoor terminal devices 12 in different indoor spaces can be the same or different. When there are more than one indoor terminal device 12, the brine flow path where the heat pump temperature control device 11 and the first heat exchange device 3 are located is defined as the main flow path. The multiple indoor terminal devices 12 can be connected to the main flow path via a manifold 7 or a hydraulic balancing distributor to achieve on-off control of the flow paths of each terminal device.

[0064] The gas heating device 21 can be a device that heats the liquid flowing through it by burning gas. The gas heating device 21 can be a gas water heater or a gas wall-mounted boiler.

[0065] In one embodiment, the heat pump temperature control device 11, the first heat exchange device 3 and the indoor terminal equipment 12 are connected in sequence. Specifically, the outlet of the heat pump temperature control device 11, the first inlet of the first heat exchange device 3, the first outlet of the first heat exchange device 3, the inlet of the indoor terminal equipment 12, the outlet of the indoor terminal equipment 12 and the inlet of the heat pump temperature control device 11 are connected in sequence, and the refrigerant in the first refrigerant circulation loop can circulate between the heat pump temperature control device 11, the first heat exchange device 3 and the indoor terminal equipment 12.

[0066] In some embodiments, the heat pump thermostat 11, the indoor terminal device 12, and the first heat exchange device 3 may also be connected in sequence. Specifically, the outlet of the heat pump thermostat 11, the inlet of the indoor terminal device 12, the outlet of the indoor terminal device 12, the first inlet of the first heat exchange device 3, the first outlet of the first heat exchange device 3, and the inlet of the heat pump thermostat 11 are connected in sequence. The brine in the first brine circulation loop may circulate between the heat pump thermostat 11, the first heat exchange device 3, and the indoor terminal device 12. In other embodiments, the first brine circulation loop may include more than one sub-loop, the more than one sub-loops being heat-exchange connected, the more than one sub-loops including a first sub-loop and a second sub-loop, the heat pump thermostat 11 may be provided in the first sub-loop, the indoor terminal device 12 may be provided in the second sub-loop, and the first sub-loop and the second sub-loop may be directly heat-exchange connected or heat-exchange connected through other sub-loops.

[0067] The gas heating device 21 has a brine flow path, one end of which is connected to the second inlet of the first heat exchange device 3, and the other end of which is connected to the second outlet of the first heat exchange device 3. The brine in the second brine circulation loop can circulate between the gas heating device 21 and the first heat exchange device 3. The brine heated by the gas heating device 21 can flow into the first heat exchange device 3 to exchange heat with the first circulation loop. After heat exchange, the brine can flow back to the gas heating device 21 for further heat exchange.

[0068] Based on the above settings, the operating states of the environmental control system include but are not limited to the following:

[0069] In the first state, the heat pump system 1 operates in cooling mode, and the gas system 2 is turned off. The heat pump temperature control device 11 is in cooling mode, which can reduce the temperature of the refrigerant flowing through it. The low-temperature refrigerant can flow into the indoor terminal device 12 and be released into the indoor space to reduce the temperature of the indoor space.

[0070] In the second state, the heat pump system 1 operates in heating mode and the gas system 2 is turned off. The heat pump temperature control device 11 is in the heating state and can increase the temperature of the refrigerant flowing through it. The high-temperature refrigerant can flow into the indoor terminal device 12 and be released into the indoor space to increase the temperature of the indoor space.

[0071] In the third state, the heat pump system 1 operates in heating mode and the gas system 2 starts in supplementary heat mode. The gas heating device 21 is turned on to increase the temperature of the refrigerant. When the high-temperature refrigerant flows into the first heat exchange device 3, heat can be added to the first refrigerant circulation loop. The refrigerant circulating between the heat pump temperature control device 11 and the indoor terminal equipment 12 can absorb the heat added by the gas in the second refrigerant circulation loop when it flows through the first heat exchange device 3. Based on this, the indoor terminal equipment 12 can obtain heat provided by the heat pump and gas at the same time, and use it to increase the temperature of the indoor space.

[0072] The technical solution of the present application is to respectively set a first refrigerant circulation loop and a second refrigerant circulation loop in the heat pump system 1 and the gas system 2 of the environmental conditioning system. When the heat pump temperature control device 11 in the first refrigerant circulation loop is insufficient in the process of supplying heat to the indoor terminal device 12 through the circulating refrigerant, the refrigerant in the second refrigerant circulation loop can be heated by turning on the gas heating device 21. When the refrigerant in the second refrigerant circulation loop flows into the first heat exchange device 3, heat can be added to the heat pump system 1 through heat exchange. Compared with the method of directly switching to the gas heat source, the combined use of the heat of the two heat sources can ensure that sufficient heat is provided for indoor heating while increasing the use time of the heat pump system 1 and reducing the use time of the gas system 2, thereby ensuring that the energy-saving and low-carbon capacity utilization rate of the heat pump system 1 is effectively improved, so as to achieve the goal of ensuring indoor heating comfort while improving energy-saving and low-carbon effects. In addition, in addition to indoor heating, it can also meet indoor cooling needs to effectively improve indoor comfort.

[0073] In one embodiment, a first fluid pump 13 is provided in the first refrigerant circulation loop, and / or a second fluid pump 22 is provided in the second refrigerant circulation loop. When the first fluid pump 13 is turned on, it can drive the refrigerant to circulate in the first refrigerant circulation loop, and when the second fluid pump 22 is turned on, it can drive the refrigerant to circulate in the second refrigerant circulation loop.

[0074] In one embodiment, referring to Figures 1 to 3, the first heat exchange device 3 includes a first cavity 31 and a first coil 32 provided in the first cavity 31, the first coil 32 is connected to the gas heating device 21, and the pipeline between the heat pump temperature control device 11 and the indoor terminal equipment 12 is connected to the first cavity 31.

[0075] In one embodiment, the first heat exchange device 3 is specifically an inner coil water tank.

[0076] The first cavity 31 has a first inlet and a first outlet. The outlet of the heat pump thermostat 11, the first inlet of the first heat exchange device 3, the first outlet of the first heat exchange device 3, the inlet of the indoor terminal device 12, the outlet of the indoor terminal device 12, and the inlet of the heat pump thermostat 11 are sequentially connected. Therefore, the refrigerant flowing out of the heat pump thermostat 11 can flow into the first cavity 31 to exchange heat with the first coil 32. After heat exchange, the refrigerant can flow into the indoor terminal device 12 for further heat exchange. After heat exchange, the refrigerant in the indoor terminal device 12 flows back to the heat pump thermostat 11 for re-temperature adjustment.

[0077] The first coil 32 has a second inlet and a second outlet. The gas heating device 21 has a brine flow path, one end of which is connected to the second inlet of the first heat exchange device 3, and the other end of which is connected to the second outlet of the first heat exchange device 3. Therefore, the brine heated by the gas heating device 21 can flow into the first coil 32 to exchange heat with the brine in the first cavity 31. After the heat exchange, the brine can flow back to the gas heating device 21 to be reheated.

[0078] In one embodiment, through the above-mentioned method, sufficient heat exchange can be achieved between the first refrigerant circulation loop and the second refrigerant circulation loop, and the heat output by the gas heating device 21 can be fully and quickly added to the heat pump system 1 to provide heat for the indoor terminal equipment 12, so as to effectively improve the heat exchange efficiency between the gas system 2 and the heat pump system 1, and effectively improve the heating comfort of the indoor space.

[0079] In other embodiments, the pipeline between the heat pump temperature control device 11 and the indoor terminal equipment 12 may also be connected to the first coil 32 , and the gas heating device 21 is connected to the first cavity 31 .

[0080] In one embodiment, referring to Figures 4 to 6 and Figures 8 to 10, the first heat exchange device 3 includes a liquid mixing chamber 33, and the pipeline between the heat pump temperature control device 11 and the indoor terminal device 12 and the gas heating device 21 are both connected to the liquid mixing chamber 33.

[0081] In one embodiment, the first heat exchange device 3 is specifically a coupling tank.

[0082] In one embodiment, through the provision of the first heat exchange device 3, the refrigerant in the heat pump system 1 and the refrigerant in the gas system 2 can be fully mixed in the mixing chamber 33, so as to effectively improve the heat exchange efficiency between the gas system 2 and the heat pump system 1, thereby effectively improving the heating comfort of the indoor space.

[0083] In one embodiment, referring to FIG. 1 to FIG. 10 , the environmental conditioning system further includes a liquid supply module 4 , and the liquid supply module 4 is connected to the first brine circulation loop or the second brine circulation loop for heat exchange.

[0084] In one embodiment, the liquid supply module 4 is specifically a module for providing domestic water. In other embodiments, the liquid supply module 4 can also be a module for providing other fluids that require temperature regulation.

[0085] The pipeline between the heat pump temperature control device 11 and the first heat exchange device 3, and / or the pipeline between the first heat exchange device 3 and the indoor terminal device 12, and / or the pipeline between the indoor terminal device 12 and the heat pump temperature control device 11 can be connected to the liquid supply module 4 for heat exchange. When the heat pump system 1 operates in the heating mode, the heat of the refrigerant in the first refrigerant circulation loop is used not only to increase the temperature of the space where the indoor terminal device 12 is located, but also to increase the temperature of the liquid in the liquid supply module 4. When the heat pump system 1 operates in the cooling mode, the cooling capacity of the refrigerant in the first refrigerant circulation loop is used not only to reduce the temperature of the space where the indoor terminal device 12 is located, but also to reduce the temperature of the liquid in the liquid supply module 4.

[0086] The pipeline between the gas heating device 21 and the first heat exchange device 3 and / or the gas heating device 21 can be connected to the liquid supply module 4 for heat exchange. When the gas heating device 21 is turned on, the heat released by it can be used to increase the temperature of the liquid in the liquid supply module 4.

[0087] In one embodiment, through the above method, the environmental conditioning system can not only adjust the indoor environmental temperature, but also meet the user's liquid supply needs.

[0088] In one embodiment, referring to Figures 1 to 3, the liquid supply module 4 includes a liquid inlet pipeline 41 and a liquid outlet pipeline 42, the gas heating device 21 has a liquid inlet and a liquid outlet, the first pipeline between the liquid inlet and the first heat exchange device 3 is connected to the liquid inlet pipeline 41, and the second pipeline between the liquid outlet and the first heat exchange device 3 is connected to the liquid outlet pipeline 42.

[0089] It should be noted that the brine in the second brine circulation loop and the liquid in the liquid supply module 4 are of the same type.

[0090] In addition to heating the refrigerant after heat exchange with the first heat exchange device 3, the gas heating device 21 can also be used to heat the liquid that needs to be adjusted in temperature by flowing into the gas heating device 21 from the liquid inlet pipe 41. A portion of the liquid heated by the gas heating device 21 can flow out from the liquid outlet pipe 42 to meet the user's liquid supply needs, and another portion of the liquid heated by the gas heating device 21 can flow into the first heat exchange device 3 to supplement heat for the heat pump system 1.

[0091] In one embodiment, through the above method, the gas heating device 21 can meet the instant heating demand of the liquid supply module 4 and supplement its heat when the heat provided by the heat pump system 1 is insufficient, so as to ensure indoor heating comfort while improving energy saving and low carbon effects.

[0092] In one embodiment, referring to Figures 1 to 3, the connection position between the liquid inlet pipeline 41 and the first pipeline is defined as a first position, and a first one-way valve 51 is provided between the first position and the first heat exchange device 3. The first one-way valve 51 is configured to conduct one-way flow from the first heat exchange device 3 to the first position.

[0093] Under the one-way shut-off action of the first one-way valve 51, the refrigerant flowing out of the first heat exchange device 3 is allowed to flow into the gas heating device 21, and the liquid flowing into the liquid inlet pipe 41 is prohibited from flowing into the first heat exchange device 3, but all flows into the gas heating device 21 for heating. On the one hand, it can avoid the liquid flowing into the liquid inlet pipe 41 flowing into the first heat exchange device 3 and affecting the heat supply to the heat pump system 1. On the other hand, it can enable the liquid flowing into the liquid inlet pipe 41 to quickly flow into the gas heating device 21 for heating, thereby effectively further improving the indoor heating comfort while satisfying the improvement of the heating efficiency of the liquid provided in the liquid supply module 4.

[0094] In one embodiment, referring to FIG. 1 to FIG. 3 , the liquid inlet pipeline 41 is provided with a second one-way valve 52 , and the second one-way valve 52 is configured to be one-way from the inlet of the liquid inlet pipeline 41 to the outlet of the liquid inlet pipeline 41 .

[0095] Through the one-way shut-off function of the second one-way valve 52, the liquid flowing into the liquid inlet pipe 41 is allowed to flow into the second refrigerant circulation loop, and the liquid in the second refrigerant circulation loop is prohibited from flowing out of the liquid inlet pipe 41, thereby avoiding heat loss in the second refrigerant circulation loop, thereby meeting the liquid supply demand while ensuring indoor heating comfort.

[0096] In one embodiment, referring to Figures 4 to 6, the first brine flow path further includes a first fluid regulating assembly 14 and a brine branch 15. The liquid supply module 4 is connected to the brine branch 15 for heat exchange. The brine branch 15 and the indoor terminal device 12 are both connected to the heat pump temperature control device 11. The heat pump temperature control device 11 is connected to the inlet of the first heat exchange device 3.

[0097] The indoor terminal device 12, the refrigerant branch 15 and the outlet of the first heat exchange device 3 are all connected to the first fluid regulating component 14, and the first fluid regulating component 14 is used to regulate the amount of refrigerant flowing out of the first heat exchange device 3 to the refrigerant branch 15 and / or the indoor terminal device 12.

[0098] In one implementation of the present application, the first fluid regulating assembly 14 is a fluid switching assembly that switches the flow direction of the refrigerant flowing out of the first heat exchange device 3 between the brine branch 15 and the indoor terminal device 12. For example, the first fluid regulating assembly 14 may be a three-way valve having a first valve position and a second valve position. The first valve position corresponds to the first heat exchange device 3 being connected to the indoor terminal device 12 and blocked from the brine branch 15. The second valve position corresponds to the first heat exchange device 3 being connected to the brine branch 15 and blocked from the indoor terminal device 12. For another example, the first fluid regulating assembly 14 may include a first control valve located in the branch where the indoor terminal device 12 resides and a second control valve located in the brine branch 15.

[0099] In another embodiment of the present application, the first fluid regulating assembly 14 may be a fluid proportional valve, which may adjust the ratio of the refrigerant flowing from the first heat exchange device 3 into the refrigerant branch 15 and the refrigerant in the indoor terminal equipment 12 .

[0100] Under the regulation of the first fluid regulating component 14 , the refrigerant flowing out of the first heat exchange device 3 can partially or completely flow through the refrigerant branch 15 to exchange heat with the liquid supply module 4 , and the liquid in the liquid supply module 4 can absorb the heat in the refrigerant branch 15 .

[0101] In one embodiment, through the above approach, when heat pump system 1 is in heating mode and gas system 2 is in supplemental heating mode, the liquid in liquid supply module 4 can be heated using both the heat provided by heat pump system 1 and the heat provided by gas system 2. This effectively improves the heating efficiency of liquid supply module 4 while also enhancing energy conservation and low-carbon efficiency. When heat pump system 1 is in cooling mode and gas system 2 is in non-heating mode, the liquid in liquid supply module 4 can be cooled in addition to heating, thus meeting the diverse liquid supply needs of users.

[0102] In other embodiments, the brine branch 15 may also be connected in parallel with the heat pump temperature control device 11 or the first heat exchange device 3 .

[0103] In one embodiment, referring to Figures 4 to 6, the liquid supply module 4 includes a second heat exchange device 43, a liquid inlet pipeline 41 and a liquid outlet pipeline 42, and the refrigerant branch 15, the liquid inlet pipeline 41 and the liquid outlet pipeline 42 are all connected to the second heat exchange device 43.

[0104] In one embodiment, the brine in the first brine circulation loop and the liquid in the liquid supply module 4 are the same liquid, for example, water. In other embodiments, the brine in the first brine circulation loop and the liquid in the liquid supply module 4 may be different liquids, for example, an ethanol solution in the first brine circulation loop and water in the liquid supply module 4.

[0105] In one implementation of the present application, the second heat exchange device 43 includes a second cavity 431 and a second coil 432 disposed within the second cavity 431. The brine branch 15 includes the second coil 432, and both the liquid inlet pipe 41 and the liquid outlet pipe 42 are in communication with the second cavity 431. The brine flowing out of the first heat exchange device 3 can flow into the second coil 432 to exchange heat with the liquid within the second cavity 431. Liquid flowing into the liquid inlet pipe 41 can flow into the second cavity 431, absorb energy from the brine in the second coil 432, and then flow out of the liquid outlet pipe 42 for user use.

[0106] In another implementation of the present application, the second heat exchange device 43 includes a mixing chamber, and the liquid supply module 4 and the refrigerant branch 15 are both connected to the mixing chamber. The liquids in the liquid supply module 4 and the refrigerant branch 15 can be fully mixed and exchanged for heat in the mixing chamber. When the liquid supply module 4 has a liquid supply demand, the liquid in the mixing chamber can flow out for user use.

[0107] In one embodiment, referring to Figure 7, a first refrigerant flow path and a second refrigerant flow path are set in the gas heating device 21, and the liquid supply module 4 includes a liquid inlet pipeline 41 and a liquid outlet pipeline 42. The liquid inlet pipeline 41, the first refrigerant flow path and the liquid outlet pipeline 42 are connected in sequence, and both ends of the second refrigerant flow path are connected to the first heat exchange device 3.

[0108] The outlet of the second brine flow path is communicated with the second inlet of the first heat exchange device 3 , and the inlet of the second brine flow path is communicated with the second outlet of the first heat exchange device 3 .

[0109] The first brine flow path and the second brine flow path are isolated from each other.

[0110] When the gas heating device 21 is turned on, the brine in the first brine flow path and the brine in the second brine flow path can be heated simultaneously.

[0111] In one embodiment, through the above arrangement, the gas heating device 21 can meet the instant heating demand of the liquid supply module 4 while providing supplementary heat to the heat pump system 1, thereby meeting the liquid supply demand while improving indoor heating comfort.

[0112] In one embodiment, referring to FIG. 7 , the liquid inlet pipe 41 is in communication with the first coolant circulation loop.

[0113] In the first refrigerant circulation loop, the first heat exchange device 3, or the pipeline between the first heat exchange device 3 and the heat pump temperature control device 11, or the pipeline between the first heat exchange device 3 and the indoor terminal equipment 12, or the pipeline between the indoor terminal equipment 12 and the heat pump temperature control device 11 can be connected to the liquid inlet pipeline 41.

[0114] In one embodiment, a water supply valve is provided on the pipeline between the liquid inlet pipeline 41 and the first refrigerant circulation loop. The water supply valve can be used to control the water supply from the liquid inlet pipeline 41 to the first refrigerant circulation loop or stop the water supply.

[0115] In one embodiment, the liquid inlet pipe 41 is connected to the first refrigerant circulation loop, which can achieve effective liquid replenishment of the first refrigerant circulation loop, avoiding insufficient refrigerant in the first refrigerant circulation loop resulting in poor heat exchange efficiency of the indoor terminal device 12 and even affecting the system operation reliability, thereby further improving indoor comfort while protecting the system.

[0116] In one embodiment, referring to FIG. 7 , a buffer container 6 is provided in the pipeline between the inlet of the heat pump temperature regulating device 11 and the outlet of the indoor terminal device 12 , and the liquid inlet pipeline 41 is in communication with the buffer container 6 .

[0117] The buffer container 6 can be used to contain the brine and its energy. In one embodiment, the buffer container 6 is a buffer water tank.

[0118] In one embodiment, a buffer container 6 is provided between the indoor terminal device 12 and the heat pump temperature control device 11, and the liquid inlet pipeline 41 is connected to the buffer container 6, which is conducive to achieving liquid replenishment while improving the stability of the refrigerant temperature flowing into the heat pump temperature control device 11, thereby meeting the indoor temperature control requirements while effectively improving the stability of the operation of the heat pump system 1.

[0119] In one embodiment, referring to FIG8 to FIG10 , the second coolant circulation loop further includes a heat exchange branch 23 and a second fluid regulating assembly 24 , the gas heating device 21 is connected in parallel with the heat exchange branch 23 , and the liquid supply module 4 is connected to the heat exchange branch 23 for heat exchange;

[0120] The liquid outlet of the first heat exchange device 3, the gas heating device 21 and the heat exchange branch 23 are all connected to the second fluid regulating component 24, and the second fluid regulating component 24 is used to regulate the refrigerant flow rate flowing from the liquid outlet into the heat exchange branch 23 and the first heat exchange device 3 respectively.

[0121] In one implementation of the present application, the second fluid regulating assembly 24 includes a three-way valve. The three-way valve has a third and fourth valve positions. The third valve position corresponds to a liquid outlet that communicates with the first heat exchange device 3 and blocks the liquid outlet from the heat exchange branch 23. The second valve position corresponds to a liquid outlet that communicates with the heat exchange branch 23 and blocks the liquid outlet from the first heat exchange device 3. By switching the valve position of the three-way valve, the flow direction of the refrigerant outflowing from the gas heating device 21 can be switched.

[0122] In another implementation of the present application, the second fluid component may include a proportional regulating valve, which can adjust the ratio of the refrigerant flowing from the liquid outlet into the heat exchange branch 23 and the refrigerant in the first heat exchange device 3.

[0123] In another implementation of the present application, the second fluid regulating component 24 may include a third control valve arranged in the heat exchange branch 23 and a fourth control valve arranged between the liquid outlet and the first heat exchange device 3. The fourth control valve is located between the heat exchange branch 23 and the first heat exchange device 3. The flow direction of the refrigerant outflowing from the gas heating device 21 is switched by opening and closing the third control valve and the fourth control valve.

[0124] In one embodiment, through the above method, the gas heating device 21 can adapt to the heat supply demand of the heat pump system 1 and the liquid supply demand of the liquid supply module 4 to distribute the heat it provides, thereby effectively balancing the liquid supply demand and the comfort of the indoor section.

[0125] In one embodiment, the heat pump system 1 further includes a refrigerant circulation loop, and the refrigerant circulation loop is connected to the heat pump temperature control device 11 for heat exchange.

[0126] The refrigerant circulation circuit is filled with refrigerant, such as fluorine.

[0127] The refrigerant circulation circuit specifically includes a compressor, a first heat exchange part, a throttling device and a second heat exchange part. The first heat exchange part, the throttling device and the second heat exchange part are connected in sequence. The first heat exchange part and the second heat exchange part are respectively connected to the exhaust port of the compressor and the return air port of the compressor. The first heat exchange part is connected to the heat pump temperature control device 11 for heat exchange.

[0128] In one embodiment, the compressor exhaust port, the first heat exchange unit, the throttling device, the second heat exchange unit, and the compressor return port are sequentially connected. When the compressor is turned on, the heat pump system 1 is in heating mode. The refrigerant discharged from the compressor flows through the first heat exchange unit, the throttling device, the second heat exchange unit, and then returns to the compressor. The first heat exchange unit is in a condensing state, and the second heat exchange unit is in an evaporating state.

[0129] In another embodiment, the refrigerant circulation circuit further includes a reversing assembly, and the compressor exhaust port, the compressor return port, the first heat exchange unit, and the second heat exchange unit are all connected to the reversing assembly. The reversing assembly has a first operating state and a second operating state. The first operating state corresponds to the exhaust port communicating with the first heat exchange unit and the return port communicating with the second heat exchange unit; the second operating state corresponds to the exhaust port communicating with the second heat exchange unit and the return port communicating with the first heat exchange unit. In one embodiment, when the compressor is turned on, the reversing assembly operates in the first operating state, and the heat pump system 1 is in heating mode. The refrigerant discharged from the compressor flows through the first heat exchange unit, the throttling device, and the second heat exchange unit in sequence before returning to the compressor. The first heat exchange unit is in a condensing state, and the second heat exchange unit is in an evaporating state. When the compressor is turned on, the reversing assembly operates in the second operating state, and the heat pump system 1 is in cooling mode. The refrigerant discharged from the compressor flows through the second heat exchange unit, the throttling device, and the first heat exchange unit in sequence before returning to the compressor. The first heat exchange unit is in an evaporating state, and the second heat exchange unit is in a condensing state.

[0130] In one embodiment, through the above arrangement, the energy in the refrigerant can be applied to the environment of the space where the indoor terminal device 12 is located through heat exchange between the refrigerant circulation loop and the heat pump temperature control device 11.

[0131] In other embodiments, the heat pump system 1 may further include a third refrigerant circulation loop, the third refrigerant circulation loop is heat-exchange connected to the refrigerant circulation loop, and the heat pump temperature control device 11 is heat-exchange connected to the third refrigerant circulation loop.

[0132] In one embodiment, referring to FIG. 2 to FIG. 3 , FIG. 5 to FIG. 6 , and FIG. 9 to FIG. 10 , the refrigerant circulation loop further includes a convection heat exchange device 16 .

[0133] In one embodiment, the convection heat exchange device 16 includes an air duct unit or the like.

[0134] The number of convection heat exchange devices 16 can be one or more. More than one convection heat exchange device 16 can be connected in parallel. The convection heat exchange device 16 can be installed in an indoor space, and different convection heat exchange devices 16 can be installed in different indoor spaces. The convection heat exchange device 16 and the indoor terminal device 12 can be installed in the same indoor space.

[0135] In one implementation, the convective heat exchange device 16 is connected in parallel with the first heat exchange portion. In another implementation, the convective heat exchange device 16 may also be the second heat exchange portion mentioned above.

[0136] In one embodiment, a convection heat exchange device 16 is also provided in the refrigerant circulation loop, thereby facilitating a variety of indoor space temperature control methods. Specifically, when the convection heat exchange device 16 serves as the aforementioned second heat exchange portion, the environmental conditioning system is on, the convection heat exchange device 16 is in an evaporating state, and the first heat exchange portion is in a condensing state. When the first fluid pump 13 of the first brine circulation loop is off, the convection heat exchange device 16 can be turned on to cool the indoor space. When the first fluid pump 13 of the first brine circulation loop is on, the convection heat exchange device 16 can be turned off, and the indoor terminal device 12 can be used to heat the indoor space, thereby achieving both cooling and heating of the indoor space through different terminals.

[0137] In one embodiment, as shown in FIG1 to FIG10 , the heat pump system 1 further includes a host 8 , the first coolant circulation loop further includes a first fluid pump 13 , and the refrigerant circulation loop further includes a compressor; the integrated module 9 includes the heat pump temperature control device 11 and the fluid pump;

[0138] The compressor and the integrated module 9 are both arranged in the host 8; or, the compressor is arranged in the host 8, and the integrated module 9 is arranged outside the host 8.

[0139] In one embodiment, the host 8 may be located in an outdoor environment.

[0140] The convection heat exchange device 16 is provided outside the main unit 8. When a second heat exchange unit is included in addition to the convection heat exchange device 16 and the first heat exchange unit, the second heat exchange unit may be provided inside the main unit 8.

[0141] The integrated module 9 can be produced independently as a hydraulic module.

[0142] In one embodiment, when the integrated module 9 and the compressor are both inside the host 8, it is beneficial to improve the convenience of installation; when the compressor is inside the host 8 and the integrated module 9 is outside the host 8, the host 8 and the integrated module 9 can be produced by different professional manufacturers respectively, thereby improving the quality of components and effectively improving the stability of system operation.

[0143] In one embodiment, the heat pump system 1 includes at least two main units 8. This helps improve the output capacity of the environmental conditioning system, thereby facilitating the provision of energy for regulating the indoor environment to more indoor terminal devices 12 or providing more energy for regulating the indoor environment to the indoor terminal devices 12, thereby further improving the comfort of indoor environmental conditioning.

[0144] In one embodiment, referring to FIG11 , the environment control system further includes an environment detection module 01 connected to the control device 100. The environment detection module 01 is disposed in the environment where the environment control system is located to detect the ambient temperature. In one embodiment, the environment detection module 01 is disposed in an outdoor environment to detect the outdoor ambient temperature.

[0145] 11 , the environment conditioning system further includes a first temperature sensor 02 connected to the control device 100 . The first temperature sensor 02 is provided at the inlet side of the indoor terminal device 12 to detect the inlet liquid temperature of the indoor terminal device 12 .

[0146] 11 , the environment conditioning system further includes a second temperature sensor 03 connected to the control device 100 . The second temperature sensor 03 is provided at the liquid inlet side of the gas heating device 21 to detect the liquid inlet temperature of the gas heating device 21 .

[0147] 11 , the environment conditioning system further includes a third temperature sensor 04 connected to the control device 100 . The third temperature sensor 04 is provided at the liquid outlet side of the gas heating device 21 to detect the liquid outlet temperature of the gas heating device 21 .

[0148] In one embodiment of the present application, referring to FIG11 , a control device 100 for an environmental conditioning system includes a processor 1001, such as a CPU, a memory 1002, and a timer 1003. These components communicate with each other via a communication bus. Memory 1002 can be a high-speed RAM memory or a non-volatile memory, such as a disk drive. Memory 1002 can also be a storage device independent of processor 1001.

[0149] Those skilled in the art will understand that the device structure shown in FIG11 does not constitute a limitation on the device, and may include more or fewer components than shown, or a combination of certain components, or a different arrangement of components.

[0150] As shown in FIG. 11 , the memory 1002 as a computer storage medium may include a control program of the environmental conditioning system.

[0151] In the device shown in FIG11 , the processor 1001 can be used to call the control program of the environmental conditioning system stored in the memory 1002 and execute the relevant steps of the control method of the environmental conditioning system in the following embodiments.

[0152] The present application also provides a control method for an environmental regulation system.

[0153] 12 , an embodiment of a control method for an environmental control system of the present application is provided. The control method for an environmental control system includes:

[0154] Step S10, when the heat pump system is in heating mode and the gas system is in supplementary heating mode, obtaining a first liquid inlet temperature of the indoor terminal device and a second liquid inlet temperature of the gas heating device; wherein, in the supplementary heating mode, the gas heating device supplements heat to the heat pump system;

[0155] When the heat pump system starts the heating mode, the gas system can simultaneously start the supplementary heating mode. Alternatively, when the heat pump system's state parameters reach a preset condition of insufficient heat during the heating mode, the gas system can be controlled to start the supplementary heating mode.

[0156] When the heat pump system is in heating mode, the heat pump thermostat is in a heating state, and the temperature of the refrigerant flowing through the heat pump thermostat increases. When the heating mode is turned on, the first fluid pump is turned on to drive the refrigerant to circulate between the heat pump thermostat, the first heat exchange device, and the indoor terminal equipment.

[0157] When the gas system is in supplemental heat mode, the gas heating device is in a heating state, and the coolant flowing through the gas heating device increases in temperature. When the heated coolant flows through the first heat exchange device, it exchanges heat with the coolant in the heat pump system to replenish heat to the heat pump system. When heating mode is activated, the second fluid pump is activated to drive the coolant to circulate between the gas heating device and the first heat exchange device.

[0158] The first liquid inlet temperature is specifically the temperature of the refrigerant flowing into the indoor terminal device, that is, the temperature of the refrigerant flowing out of the first heat exchange device.

[0159] The second liquid inlet temperature is specifically the temperature of the refrigerant flowing into the gas heating device, that is, the temperature of the refrigerant flowing out of the second outlet of the first heat exchange device.

[0160] Step S20, determining a target liquid outlet temperature of the gas heating device according to the first liquid inlet temperature and the second liquid inlet temperature;

[0161] Different first and second inlet liquid temperatures correspond to different target outlet liquid temperatures. The target outlet liquid temperature can be determined based on the relationship between the first and second inlet liquid temperatures. Alternatively, the target outlet liquid temperature can be determined based on the temperature range within which the first and second inlet liquid temperatures fall.

[0162] In one implementation, a correspondence between the first and second liquid inlet temperatures and the target liquid outlet temperature can be preset. The correspondence can be in the form of a calculation formula, a mapping relationship, or the like. Based on this correspondence, the target liquid outlet temperature corresponding to the first and second liquid inlet temperatures can be determined. For example, the target liquid outlet temperature can be calculated by substituting the first and second liquid inlet temperatures into a preset formula. In another example, the target liquid outlet temperature can be obtained by looking up the first and second liquid inlet temperatures in a table.

[0163] In another implementation, a temperature adjustment value may be determined based on the first and second liquid inlet temperatures, and the reference temperature may be adjusted based on the temperature adjustment value to obtain the target liquid outlet temperature. The reference temperature may include a preset fixed temperature, a target value for the current liquid outlet temperature of a gas heating device, or a liquid outlet temperature of a heat pump temperature control device.

[0164] Step S30: Controlling the operation of the gas heating device according to the target liquid outlet temperature.

[0165] In one implementation, the current outlet temperature of the gas heating device can be obtained, and heating control parameters of the gas heating device can be determined based on the relationship, difference, or ratio between the current outlet temperature and a target outlet temperature. The gas heating device can then be controlled according to the determined heating control parameters. For example, when the current outlet temperature is greater than the target outlet temperature, the gas heating device can be controlled to reduce heating power; when the current outlet temperature is less than the target outlet temperature, the gas heating device can be controlled to increase heating power. In another example, the temperature difference between the current outlet temperature and the target outlet temperature can be determined, and a power adjustment value for the heating power can be determined based on the temperature difference. The heating power of the gas heating device can then be increased or decreased based on the power adjustment value.

[0166] In another implementation, a target heating power corresponding to the target liquid outlet temperature can be determined based on a preset correspondence between the target liquid outlet temperature and the heating power of the gas heating device, and the gas heating device can be controlled to operate at the target heating power. The preset correspondence can include a calculation formula or a mapping table.

[0167] The present application proposes a control method for an environmental conditioning system, in which a heat pump system and a gas system are respectively provided with a heat exchange connection for a refrigerant circulation loop. When the heat pump system is in a heating mode and the gas system is in a heating supplement mode, in addition to the heat pump temperature control device providing heat for the indoor terminal equipment, the gas system can also supplement heat to the heat pump system. The heat of the gas system and the heat pump system are combined to jointly provide heat for the indoor terminal equipment. In this process, the target liquid outlet temperature is determined by combining the respective liquid inlet temperatures of the indoor terminal equipment and the gas heating device to control the operation of the gas heating device, which can ensure that the heat pump system can be used for heating under any working conditions, avoid using the gas system alone for heating, reduce the fuel resources used by the gas system, and the gas system can accurately provide the heat that is lacking in the indoor terminal equipment of the heat pump system, thereby ensuring the indoor heating comfort while improving energy saving and low carbon effects.

[0168] Based on the above embodiment, another embodiment of the control method of the environmental control system of the present application is proposed. Referring to FIG13 , the step S20 includes:

[0169] Step S21, when the first temperature difference between the maximum operating temperature of the gas heating device and the second liquid inlet temperature is greater than or equal to a first preset value, and the second temperature difference between the second liquid inlet temperature and the first liquid inlet temperature is greater than or equal to a second preset value, or when the second temperature difference between the second liquid inlet temperature and the first liquid inlet temperature is greater than or equal to a second preset value, reduce the target value of the current liquid outlet temperature of the gas heating device to obtain the target liquid outlet temperature.

[0170] The maximum operating temperature is specifically the maximum operating temperature allowed for reliable operation of the gas heating device. The maximum operating temperature may be a preset fixed value or a temperature value obtained based on environmental parameters of the environment in which the gas heating device is located.

[0171] The first preset value is specifically a preset minimum operating temperature difference. The first preset value may also be a preset fixed value, which is determined based on environmental parameters of the environment in which the gas heating device is located, the type of gas used in the gas heating device, and the amount of gas supplied to the gas heating device. In one embodiment, the first preset value is in the range of [5, 10].

[0172] The first preset value can be used to determine whether the heating function of the gas heating device is effective. If the first temperature difference is greater than or equal to the first preset value, it indicates that the gas heating device can effectively increase the temperature of the incoming coolant when operating at the maximum operating temperature. If the first temperature difference is less than the first preset value, it indicates that the gas heating device cannot further increase the temperature of the incoming coolant when operating at the maximum operating temperature.

[0173] The second preset value is specifically a preset minimum temperature difference between the gas system and the heat pump system. The first preset value can be a preset fixed value, or it can be determined based on environmental parameters of the environment in which the first heat exchange device is located, the temperature difference between the upper and lower areas of the inner cavity of the first heat exchange device, and so on. In one embodiment, the second preset value is in the range of [2, 10].

[0174] The second preset value can be used to determine whether the gas system is effectively supplementing the heat pump system. When the second temperature difference is greater than or equal to the second preset value, it indicates that the heat from the gas system, after heat exchange in the first heat exchange device, can effectively increase the heat of the heat pump system. When the second temperature difference is less than the second preset value, it indicates that the gas system is insufficiently heated and cannot effectively increase the heat of the heat pump system.

[0175] The current target value of the liquid outlet temperature may be the initial target liquid outlet temperature of the gas heating device preset before leaving the factory, or it may be the old target liquid outlet temperature of the gas heating device determined last time before the current moment based on the actual operation of the environmental control system.

[0176] Specifically, the target outlet temperature of the gas heating device is obtained by reducing the target outlet temperature of the gas heating device according to the temperature adjustment value. The temperature adjustment value can be a preset fixed value or a value determined according to the actual operation of the environmental control system.

[0177] In one embodiment, when the first liquid inlet temperature and the second liquid inlet temperature meet the above conditions, it indicates that the gas supply system can provide sufficient heat to meet the heat supplement required for heating of the indoor terminal equipment in the heat pump system. At this time, reducing the target value of the liquid outlet temperature of the gas heating device is beneficial to ensuring that the working temperature difference in the gas heating device and the heat supplement temperature difference of the gas system can meet the design standards. On the one hand, it improves the energy efficiency of the environmental conditioning system. On the other hand, it can ensure that the liquid supply temperature of the indoor terminal equipment gradually reaches a constant temperature state while meeting the indoor heating comfort, thereby ensuring that the indoor heating state can be maintained at a heating state that meets the user's thermal comfort.

[0178] After step S30, the process returns to step S10, where the currently determined target outlet temperature is used as the target value for determining the next target outlet temperature. This allows for dynamic adjustment of the target outlet temperature of the gas heating device to further ensure that the outlet temperature of the indoor terminal device is neither too high nor too low, maintaining a constant temperature that satisfies indoor heating comfort.

[0179] In one embodiment, the step of reducing the target value of the current liquid outlet temperature of the gas heating device to obtain the target liquid outlet temperature includes: determining a temperature correction value based on the first liquid inlet temperature and the second liquid inlet temperature; and reducing the target value based on the temperature correction value to obtain the target liquid outlet temperature.

[0180] The temperature correction value may include a temperature correction amplitude or a temperature correction ratio. When the temperature correction value is the temperature correction amplitude, the difference between the target value and the temperature correction amplitude may be used as the target liquid outlet temperature. When the temperature correction value is the temperature correction ratio, the product of the target value and the temperature correction ratio may be used as the target liquid outlet temperature.

[0181] In one implementation, a second temperature difference between the second inlet temperature and the first inlet temperature can be determined, and the temperature correction amplitude can be determined based on the second temperature difference. In another implementation, a ratio of the first inlet temperature to the second inlet temperature can be determined, and the temperature correction ratio can be determined based on the ratio.

[0182] In one embodiment, the temperature correction value determined in combination with the first liquid inlet temperature and the second liquid inlet temperature is used to reduce the target value, which is beneficial to improving the accuracy of the target liquid outlet temperature and ensuring that when the gas heating device is controlled to operate according to the target liquid outlet temperature, the heat replenishment between the gas system and the heat pump system is precisely regulated to further improve indoor heating comfort.

[0183] In one embodiment, the step of determining the temperature correction value based on the first liquid inlet temperature and the second liquid inlet temperature includes: determining a second temperature difference between the second liquid inlet temperature and the first liquid inlet temperature; and determining the temperature correction value based on the difference between the second temperature difference and the second preset value.

[0184] For example, define the first liquid inlet temperature as T1, the second liquid inlet temperature as T2, the current target value of the liquid outlet temperature as Ts', the second preset value ΔT, and the target liquid outlet temperature as Ts, then Ts = Ts'-(T2-T1-ΔT), where T2-T1 is the second temperature difference value, and (T2-T1-ΔT) is the temperature correction value.

[0185] In one embodiment, determining the temperature correction value in the above manner is conducive to ensuring that when the target liquid outlet temperature is controlled by the gas heating device, the actual heat supplement temperature difference of the gas system can accurately reach the second preset value, thereby effectively improving the system energy efficiency and indoor comfort.

[0186] Based on any of the above embodiments, another embodiment of the control method of the environmental conditioning system of the present application is proposed. Referring to FIG14 , after the step of obtaining the first inlet liquid temperature of the indoor terminal device and the second inlet liquid temperature of the gas heating device, the method further includes:

[0187] Step S40, when the first temperature difference between the maximum operating temperature and the second liquid inlet temperature is less than the first preset value, or when the third temperature difference between the first liquid inlet temperature and the set temperature of the indoor terminal device is greater than or equal to a third preset value, control the gas system to turn off the supplementary heat mode.

[0188] The third preset value is the minimum value that the third temperature difference must reach for the heat exchange capacity of the indoor terminal device to meet indoor heating comfort requirements. In one embodiment, to further improve indoor comfort, the third preset value is greater than 0. For example, the third preset value ranges from [2, 5]. In other embodiments, the third preset value may also be equal to 0.

[0189] If the third temperature difference is greater than or equal to the third preset value, it indicates that the heating supply of the indoor terminal device is sufficient to meet the indoor comfort needs; if the third temperature difference is less than the third preset value, the heating supply of the indoor terminal device is insufficient to meet the indoor comfort needs.

[0190] When the supplementary heating mode is turned off, the gas system stops supplying supplementary heat to the heat pump system.

[0191] In one embodiment, when the first temperature difference is less than a first preset value, it indicates that the gas heating device, even operating at its maximum operating temperature, cannot effectively provide heat to the heat pump system. In this case, the heat supplement mode is disabled, thereby reducing unnecessary fuel consumption. When the third temperature difference is greater than or equal to a third preset value, it indicates that the heat supply from the indoor terminal device is sufficient to meet indoor comfort requirements. In this case, the heat supplement mode is disabled, thereby saving energy and preventing excessive heat from reaching the indoor terminal device. This further contributes to energy conservation and low carbon emissions while improving indoor heating comfort.

[0192] When the first temperature difference is greater than or equal to the first preset value, the second temperature difference is less than the second preset value, and the third temperature difference is less than the third preset value, the operation of the gas heating device can be controlled by maintaining the target value of the current liquid outlet temperature of the gas heating device.

[0193] In one embodiment, the second refrigerant circulation loop further includes a second fluid pump, which is turned on in the heat supplement mode. The step of controlling the gas system to turn off the heat supplement mode includes: controlling the second fluid pump to turn off.

[0194] When the second fluid pump is turned off, the refrigerant stops circulating in the second refrigerant circulation loop, thereby stopping the heat output by the gas heating device from being transported to the first heat exchange device, thereby stopping the heat supply to the heat pump system.

[0195] In one implementation, during the process of shutting down the supplementary heat mode, in addition to shutting down the second fluid pump, when judging whether the gas heating device has other heat requirements in addition to the supplementary heat of the heat pump system, as in the environmental conditioning system in Figures 1 to 3 and 7, when the liquid supply module is connected to the second refrigerant circulation loop, when judging whether the liquid supply module has a heating requirement, if there is no heat requirement, the gas heating device can be controlled to shut down; if there is a heat requirement, the gas heating device can be controlled to remain in the on state.

[0196] In another implementation, during the process of shutting down the supplementary heating mode, the second fluid pump may be controlled to shut down and the gas heating device may be controlled to shut down.

[0197] In one embodiment, the above-mentioned method stops the heat supplement by stopping the circulation of the refrigerant, which is beneficial to improve the timeliness of stopping the heat supplement, further avoid the temperature of the indoor terminal equipment from being too high, and improve indoor comfort.

[0198] In other embodiments, the step of shutting down the supplementary heating mode of the gas system may also include controlling the gas heating device to shut down.

[0199] Based on any of the above embodiments, another embodiment of the control method of the environmental control system of the present application is proposed. Referring to FIG15 , before step S10, the method further includes:

[0200] Step S01, when the heat pump system is in heating mode and the gas system starts the supplementary heating mode, the gas heating device is controlled to operate according to the maximum operating temperature of the gas heating device so that the liquid outlet temperature of the gas heating device is greater than the set temperature of the indoor terminal device.

[0201] The maximum operating temperature is the maximum liquid outlet temperature that the pre-set gas heating device allows to reach.

[0202] After step S01, step S10 can be executed when the gas heating device is controlled to operate at the maximum operating temperature and meets the set conditions. The set conditions here include that the operating time is greater than or equal to the set time, and / or the temperature difference between the inlet temperature of the indoor terminal device and the set temperature of the indoor terminal device is less than the preset value, and / or the temperature difference between the outlet temperature of the gas heating device and the set temperature of the indoor terminal device is greater than or equal to the preset threshold, and / or the temperature difference between the outlet temperature of the gas heating device and the outlet temperature of the heat pump temperature control device is greater than or equal to the preset threshold, and / or the temperature difference between the outlet temperature of the gas heating device and the outlet temperature of the heat pump temperature control device is greater than or equal to the preset threshold, and so on.

[0203] In one embodiment, when the supplementary heat mode is started, the gas heating device is first controlled to operate at the maximum operating temperature, which is conducive to the rapid increase of the refrigerant flowing into the first heat exchange device, thereby improving the supplementary heat efficiency of the gas system and further improving the indoor heating comfort.

[0204] Based on any of the above embodiments, another optional embodiment of the control method of the environmental conditioning system of the present application is proposed. The environmental conditioning system further includes a liquid supply module, which is connected to the second coolant circulation loop. Referring to FIG. 16 , before step S10, the method further includes:

[0205] Step S02: when the heat pump system is in heating mode, obtaining a state parameter, wherein the state parameter indicates whether the current heat of the indoor terminal device reaches the target heat;

[0206] The status parameters may include operating status parameters of the indoor terminal device itself and / or environmental parameters of the environment in which the indoor terminal device resides. The operating status parameters may include at least one of the following parameters: the inlet liquid temperature of the indoor terminal device, the surface temperature of the indoor terminal device, the outlet liquid temperature of the indoor terminal device, etc. The environmental parameters may include at least one of the following parameters: the indoor ambient temperature, the outdoor ambient temperature, the indoor temperature change value, etc.

[0207] The target heat is specifically the target value of the heat output required by the indoor terminal device to meet the heating demand of the indoor environment where the indoor terminal device is located.

[0208] Step S03, when the state parameter meets a preset condition, obtaining demand information of the liquid supply module, wherein the preset condition indicates that the current heat does not reach the target heat;

[0209] The preset condition may be a target parameter range that the state parameter needs to reach, or a target quantity relationship or size relationship that needs to be satisfied between the state parameter and the preset parameter.

[0210] The demand information includes whether the liquid supply module has a liquid supply demand.

[0211] Step S04, when the liquid supply module does not have a liquid supply demand, controlling the gas system to start the supplementary heat mode;

[0212] Here, after step S04, step S01 may be executed.

[0213] Step S05 , when the liquid supply module has a liquid supply demand, the gas system is controlled to turn off the supplementary heat mode, and the gas heating device is controlled to turn on to provide heat to the liquid supply module.

[0214] Here, shutting down the heat supplement mode means controlling the second fluid pump to shut down, while the gas heating device can be turned on to provide the required heat for the liquid supply demand of the liquid supply module.

[0215] In one embodiment, when the heating amount of the heat pump system cannot meet the heating demand of the indoor terminal equipment, it further identifies whether the liquid supply module has a liquid supply demand. When the liquid supply module has a liquid supply demand, the gas system stops the heat supply mode, thereby ensuring that the heat of the gas heating device can first meet the liquid supply demand of the liquid supply module, thereby effectively improving the effect of taking into account both the liquid supply demand and the indoor heating demand.

[0216] In one embodiment, the state parameter includes the ambient temperature and the liquid inlet temperature of the indoor terminal device, and the preset condition includes at least one of the following conditions:

[0217] The ambient temperature is less than or equal to the preset ambient temperature;

[0218] The temperature difference between the set temperature of the indoor terminal device and the inlet temperature of the indoor terminal device is greater than the preset temperature difference, or the temperature difference between the set temperature of the indoor terminal device and the inlet temperature of the indoor terminal device is greater than the preset temperature difference and lasts for a preset time.

[0219] In one embodiment, the ambient temperature is an outdoor ambient temperature. In other embodiments, the ambient temperature may also be an indoor ambient temperature.

[0220] The set temperature of the indoor terminal device is specifically a preset target temperature that the indoor environment where the indoor terminal device is located needs to reach.

[0221] The temperature difference here is the calculated result of subtracting the inlet liquid temperature from the set temperature.

[0222] The preset temperature difference value range is [-15, 5], and the preset time range is [30min, 60min].

[0223] In one embodiment, when the ambient temperature is too low and / or the temperature difference between the set temperature and the inlet liquid temperature is too large, it indicates that the heat pump system alone does not provide enough heat for the indoor terminal equipment and cannot meet the indoor heating comfort. At this time, the heating supplement mode of the gas system is turned on in time to supplement the heat pump system with heat through the gas system, so as to effectively improve the indoor heating comfort.

[0224] Based on any of the above embodiments, in one embodiment, the control method of the environmental conditioning system further includes: when the heat pump system is in the cooling mode, controlling the gas system to turn off the supplementary heating mode.

[0225] In the cooling mode, the heat pump temperature control device is in the cooling state, the temperature of the refrigerant flowing through the heat pump temperature control device drops, and the first fluid pump is turned on to drive the low-temperature refrigerant to flow into the indoor terminal device to lower the indoor space temperature.

[0226] In one embodiment, shutting down the supplementary heat mode includes shutting down the gas heating device in the gas system and shutting down the second fluid pump.

[0227] In other embodiments, when the gas system further includes a liquid supply module, when the supplementary heat mode is turned off and the liquid supply module has a liquid heating demand, the gas heating device may remain on, but the second fluid pump may be turned off.

[0228] In one embodiment, the above-mentioned method can ensure that the indoor terminal equipment can meet both indoor cooling and heating needs, thereby further improving the comfort of the indoor space.

[0229] In addition, the present application also proposes a storage medium on which a control program of an environmental conditioning system is stored. When the control program of the environmental conditioning system is executed by a processor, the relevant steps of any embodiment of the control method of the environmental conditioning system are implemented.

[0230] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or system. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or system comprising the element.

[0231] The serial numbers of the above embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0232] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for enabling a terminal device (which can be a mobile phone, computer, server, environmental control system, or network equipment, etc.) to execute the methods described in each embodiment of the present application.

[0233] The above are merely optional embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A control method for an environmental conditioning system, wherein: The environmental conditioning system comprises a first heat exchange device, a heat pump system and a gas system, the heat pump system comprises a first refrigerant circulation loop, the gas system comprises a second refrigerant circulation loop, the first refrigerant circulation loop and the second refrigerant circulation loop are both connected to the first heat exchange device, the first refrigerant circulation loop comprises a heat pump temperature control device and an indoor terminal device, the second refrigerant circulation loop comprises a gas heating device, and the control method of the environmental conditioning system comprises the following steps: When the heat pump system is in a heating mode and the gas system is in a supplementary heating mode, obtaining a first liquid inlet temperature of the indoor terminal device and a second liquid inlet temperature of the gas heating device; Determining a target liquid outlet temperature of the gas heating device according to the first liquid inlet temperature and the second liquid inlet temperature; and Controlling the operation of the gas heating device according to the target liquid outlet temperature; Wherein, in the supplementary heating mode, heat is supplemented to the heat pump system through the gas heating device.

2. The control method of the environmental conditioning system according to claim 1, wherein: The step of determining the target liquid outlet temperature of the gas heating device according to the first liquid inlet temperature and the second liquid inlet temperature comprises: When the first temperature difference between the maximum operating temperature of the gas heating device and the second liquid inlet temperature is greater than or equal to a first preset value, and the second temperature difference between the second liquid inlet temperature and the first liquid inlet temperature is greater than or equal to a second preset value, or when the second temperature difference between the second liquid inlet temperature and the first liquid inlet temperature is greater than or equal to a second preset value, the target value of the current liquid outlet temperature of the gas heating device is reduced to obtain the target liquid outlet temperature.

3. The control method of the environmental conditioning system according to claim 2, wherein: The step of reducing the target value of the current outlet liquid temperature of the gas heating device to obtain the target outlet liquid temperature comprises: determining a temperature correction value according to the first inlet liquid temperature and the second inlet liquid temperature; and The target value is reduced according to the temperature correction value to obtain the target liquid outlet temperature.

4. The control method of the environmental conditioning system according to claim 3, wherein: The step of determining the temperature correction value according to the first liquid inlet temperature and the second liquid inlet temperature comprises: determining a second temperature difference between the second inlet liquid temperature and the first inlet liquid temperature; and The temperature correction value is determined according to the difference between the second temperature difference value and the second preset value.

5. The control method of the environmental conditioning system according to claim 2, wherein: After the step of obtaining the first liquid inlet temperature of the indoor terminal device and the second liquid inlet temperature of the gas heating device, the control method of the environmental conditioning system further includes: When the first temperature difference between the maximum operating temperature and the second liquid inlet temperature is less than the first preset value, or when the third temperature difference between the first liquid inlet temperature and the set temperature of the indoor terminal device is greater than or equal to a third preset value, the gas system is controlled to close the supplementary heating mode.

6. The control method of the environmental conditioning system according to claim 5, wherein: The second secondary coolant circulation loop further includes a second fluid pump, and the second fluid pump is turned on in the supplementary heat mode. The step of controlling the gas system to close the supplementary heat mode includes: The second fluid pump is controlled to be closed.

7. The control method of the environmental conditioning system according to claim 1, wherein: Before the step of obtaining the first liquid inlet temperature of the indoor terminal device and the second liquid inlet temperature of the gas heating device, the control method of the environmental conditioning system further includes: When the heat pump system is in heating mode and the gas system starts the supplementary heating mode, the gas heating device is controlled to operate according to the maximum operating temperature of the gas heating device so that the liquid outlet temperature of the gas heating device is greater than the set temperature of the indoor terminal equipment.

8. The control method of the environmental conditioning system according to any one of claims 1 to 7, wherein: The environmental conditioning system further includes a liquid supply module, the liquid supply module is connected to the second coolant circulation loop, and before the step of obtaining the first liquid inlet temperature of the indoor terminal device and the second liquid inlet temperature of the gas heating device, the control method of the environmental conditioning system further includes: When the heat pump system is in heating mode, a state parameter is obtained, wherein the state parameter indicates whether the current heat of the indoor terminal device reaches the target heat; When the state parameter meets the preset condition, obtaining the demand information of the liquid supply module; When the liquid supply module has no liquid supply demand, controlling the gas system to start the supplementary heat mode; and When the liquid supply module has a liquid supply demand, the gas system is controlled to turn off the supplementary heat mode, and the gas heating device is controlled to turn on to provide heat to the liquid supply module; The preset condition indicates that the current heat does not reach the target heat.

9. The control method of the environment conditioning system according to claim 8, wherein: The state parameters include the ambient temperature and the liquid inlet temperature of the indoor terminal device, and the preset conditions include at least one of the following conditions: The ambient temperature is less than or equal to a preset ambient temperature; and The temperature difference between the set temperature of the indoor terminal device and the inlet temperature of the indoor terminal device is greater than the preset temperature difference, or the temperature difference between the set temperature of the indoor terminal device and the inlet temperature of the indoor terminal device is greater than the preset temperature difference and lasts for a preset time.

10. An environmental conditioning system, wherein: The environmental conditioning system includes a control device, a first heat exchange device, a heat pump system and a gas system, the heat pump system includes a first refrigerant circulation loop, the gas system includes a second refrigerant circulation loop, the first refrigerant circulation loop and the second refrigerant circulation loop are both connected to the first heat exchange device, the first refrigerant circulation loop includes a heat pump temperature control device and an indoor terminal device, and the second refrigerant circulation loop includes a gas heating device; The heat pump system and the gas system are both connected to the control device, which includes: a memory, a processor, and a control program of the environmental conditioning system stored in the memory and executable on the processor, wherein the control program of the environmental conditioning system, when executed by the processor, implements the steps of the control method of the environmental conditioning system as described in any one of claims 1 to 9.

11. A storage medium, wherein: The storage medium stores a control program of the environmental conditioning system, and when the control program of the environmental conditioning system is executed by the processor, the steps of the control method of the environmental conditioning system according to any one of claims 1 to 9 are implemented.

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