Control method of an environmental conditioning system, environmental conditioning system and storage medium

Abstract

This application discloses a control method, an environmental control system, and a storage medium for an environmental control system, relating to the field of electrical technology. The environmental control system includes a heat pump device, a gas device, and a refrigerant circulation loop. The refrigerant circulation loop includes indoor terminal equipment. Both the heat pump device and the gas device are connected to the refrigerant circulation loop for heat exchange. The method includes: controlling the environmental control system to adjust the heat supply of the heat pump device according to a first target refrigerant temperature corresponding to the heat pump device, and obtaining a first actual refrigerant temperature of the refrigerant circulation loop; when the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature, controlling the operation of the environmental control system to make the gas device supply heat with a heat less than a preset heat; wherein the system target refrigerant temperature is greater than or equal to the first target refrigerant temperature. This application aims to improve the reliability of heat pump operation in the system and save overall system energy costs.

Description

Technical Field

[0001] This application relates to the field of electrical technology, and in particular to control methods for environmental control systems, environmental control systems, and storage media. Background Technology

[0002] In the process of regulating the indoor environment, many environmental control systems use a combination of heat pumps and gas appliances as dual heat sources to provide heating at the indoor terminals in refrigerant flow paths such as water circuits. Each has its own advantages and disadvantages as a heat source. Gas appliances heat up much faster than heat pumps, but the gas cost for gas appliances is higher than the electricity cost for heat pumps.

[0003] Currently, in systems that combine gas-fired equipment and heat pump equipment as heat sources, excessive output from the gas-fired equipment during heating can cause the water temperature in the flow path to rise too quickly, leading to reliability issues with the heat pump and resulting in excessively high system energy costs. Summary of the Invention

[0004] The main objective of this application is to provide a control method, an environmental control system, and a storage medium for an environmental control system, which aims to improve the reliability of heat pump operation in the system and save the overall energy cost of the system.

[0005] To achieve the above objectives, this application proposes a control method for an environmental control system. The environmental control system includes a heat pump device, a gas device, and a refrigerant circulation loop. The refrigerant circulation loop includes indoor terminal equipment. Both the heat pump device and the gas device are connected to the refrigerant circulation loop for heat exchange. The method includes:

[0006] Based on the first target refrigerant temperature corresponding to the heat pump equipment, the environmental conditioning system is controlled to adjust the heat supply of the heat pump equipment, and the first actual refrigerant temperature of the refrigerant circulation loop is obtained.

[0007] When the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature, the environmental control system is controlled to operate so that the gas equipment provides heat with a heat value less than the preset heat value.

[0008] Wherein, the target refrigerant temperature of the system is greater than or equal to the first target refrigerant temperature.

[0009] In one embodiment, the step of controlling the operation of the environmental conditioning system to enable the gas appliance to provide heat at a level less than a preset heat value includes:

[0010] Control the gas proportional valve of the gas equipment to operate at an opening degree less than a preset degree; and / or,

[0011] The number of burners controlling the combustion of the gas equipment is less than a preset number; and / or,

[0012] The fan in the gas equipment is controlled to operate at a speed lower than the preset speed.

[0013] In one embodiment, the preset heat is the maximum heat, the preset opening degree is the maximum opening degree of the gas proportional valve; and / or, the preset quantity is the maximum number of burners in the gas equipment; and / or, the preset speed is the maximum speed of the fan in the gas equipment.

[0014] In one embodiment, after the step of controlling the operation of the environmental conditioning system to enable the gas appliance to provide heat at a level less than a preset heat value, the method further includes:

[0015] Obtain the second actual refrigerant temperature of the refrigerant circulation loop;

[0016] The environmental control system adjusts the heat supply of the gas equipment based on the second actual refrigerant temperature and the system target refrigerant temperature.

[0017] In one embodiment, the step of controlling the environmental conditioning system to adjust the heat supply of the gas equipment based on the second actual refrigerant temperature and the system target refrigerant temperature includes:

[0018] Determine a first temperature difference between the second actual refrigerant temperature and the system target refrigerant temperature;

[0019] When the first temperature difference is less than the first preset temperature difference, the environmental control system is controlled to operate to increase the heat supply of the gas equipment;

[0020] When the first temperature difference is greater than or equal to the first preset temperature difference and less than the second preset temperature difference, the environmental control system is controlled to maintain the current heat supply of the gas equipment.

[0021] When the first temperature difference is greater than or equal to the second preset temperature difference, the environmental control system is controlled to reduce the heat supply of the gas equipment.

[0022] Wherein, the first preset temperature difference is less than the second preset temperature difference.

[0023] In one embodiment, the step of controlling the operation of the environmental conditioning system to increase the heat supply of the gas-fired equipment includes:

[0024] Control the gas proportional valve of the gas equipment to increase its opening; and / or,

[0025] Control the gas equipment to increase the number of combustion burners; and / or,

[0026] Control the fan in the gas equipment to increase its speed.

[0027] In one embodiment, the step of controlling the operation of the environmental conditioning system to reduce the heat supply of the gas-fired equipment includes:

[0028] Control the gas proportional valve of the gas equipment to reduce its opening; and / or,

[0029] Control the gas equipment to reduce the number of combustion burners; and / or,

[0030] Control the fan in the gas equipment to reduce its operating speed.

[0031] In one embodiment, the first heat exchange section in the refrigerant circulation loop is connected to the heat pump device for heat exchange, and the step of controlling the environmental conditioning system to adjust the heat supply of the heat pump device according to the first target refrigerant temperature corresponding to the heat pump device includes:

[0032] When the temperature difference between the actual refrigerant temperature of the first heat exchange section and the first target refrigerant temperature is less than or equal to the third preset temperature difference, the environmental control system is controlled to operate in order to improve the heat supply of the heat pump equipment.

[0033] When the temperature difference between the actual refrigerant temperature in the first heat exchange section and the first target refrigerant temperature is greater than the third preset temperature difference, the environmental control system is controlled to reduce the heat supply of the heat pump equipment.

[0034] In one embodiment, the step of controlling the operation of the environmental conditioning system to enable the gas-fired equipment to provide heat at a rate less than a preset heat value when the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature includes:

[0035] If the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature and the heat pump equipment does not meet the defrosting conditions, the environmental control system is controlled to operate so that the gas equipment provides heat with a heat value less than the preset heat value.

[0036] In one embodiment, after the step of obtaining the first actual refrigerant temperature of the refrigerant circulation loop, the method further includes:

[0037] When the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature and the heat pump equipment meets the defrosting conditions, the environmental control system is controlled to operate so that the gas equipment provides heat with a heat level greater than or equal to the preset heat level.

[0038] In one embodiment, the method further includes:

[0039] The second target refrigerant temperature of the gas equipment is determined based on the system target refrigerant temperature and the first target refrigerant temperature.

[0040] After the step of controlling the operation of the environmental control system to enable the gas equipment to provide heat with a heat value greater than or equal to the preset heat value when the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature and the heat pump equipment meets the defrosting conditions, the method further includes:

[0041] The environmental control system is operated to adjust the heat supply of the gas equipment based on the second target refrigerant temperature.

[0042] In one embodiment, the second heat exchange section in the refrigerant circulation loop is connected to the gas equipment for heat exchange, and the step of controlling the operation of the environmental control system to adjust the heat supply of the gas equipment according to the second target refrigerant temperature includes:

[0043] When the temperature difference between the actual refrigerant temperature in the second heat exchange section and the second target refrigerant temperature is greater than or equal to the sixth preset temperature difference, the environmental control system is controlled to reduce the heat supply of the gas equipment.

[0044] In one embodiment, the step of controlling the operation of the environmental conditioning system to reduce the heat supply of the gas-fired equipment includes:

[0045] Control the gas proportional valve of the gas equipment to reduce its opening; and / or,

[0046] Control the gas equipment to reduce the number of combustion burners; and / or,

[0047] Control the fan in the gas equipment to reduce its operating speed.

[0048] In one embodiment, prior to the step of controlling the operation of the environmental conditioning system to enable the gas appliance to provide heat at a level less than a preset heat value, the method further includes:

[0049] When the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature, and the temperature difference between the first actual refrigerant temperature and the system target refrigerant temperature is less than or equal to a fourth preset temperature difference, the environmental control system is controlled to start the heating of the gas equipment; or,

[0050] When the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature and the temperature difference between the first actual refrigerant temperature and the first target refrigerant temperature is less than or equal to a fifth preset temperature difference, the environmental control system is controlled to start the heating of the gas equipment.

[0051] In one embodiment, the first heat exchange section in the refrigerant circulation loop is connected to the heat pump device for heat exchange. Before the step of controlling the operation of the environmental conditioning system to enable the gas equipment to provide heat with a heat value less than a preset heat value, the method further includes:

[0052] When the temperature difference between the actual refrigerant temperature of the first heat exchange section and the first target refrigerant temperature is less than or equal to a third preset temperature difference, the step of controlling the environmental conditioning system to start the heating of the gas equipment when the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature and the temperature difference between the first actual refrigerant temperature and the system target refrigerant temperature is less than or equal to a fourth preset temperature difference is executed.

[0053] If the temperature difference between the actual refrigerant temperature and the first target refrigerant temperature in the first heat exchange section is greater than a third preset temperature difference, the step of controlling the environmental control system to start the heating of the gas equipment is executed when the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature and the temperature difference between the first actual refrigerant temperature and the first target refrigerant temperature is less than or equal to a fifth preset temperature difference.

[0054] In addition, to achieve the above objectives, this application also proposes an environmental control system, which includes a control device, a heat pump device, a gas device, and a refrigerant circulation loop. The refrigerant circulation loop includes indoor terminal devices, and both the heat pump device and the gas device are connected to the refrigerant circulation loop for heat exchange.

[0055] The gas equipment, the gas equipment, and the refrigerant circulation loop are all connected to the control device. The control device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. The computer program is configured to implement the steps of the control method for the environmental conditioning system as described above.

[0056] In addition, to achieve the above objectives, this application also proposes a storage medium, which is a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, it implements the steps of the control method of the environmental control system as described above.

[0057] One or more technical solutions proposed in this application have at least the following technical effects: In this solution, after the heat pump equipment adapts to the first target refrigerant temperature and adjusts the heat supply, if the actual refrigerant temperature in the refrigerant circulation loop does not reach the system target refrigerant temperature, the gas equipment supplements the heat with heat less than the preset heat. This can avoid the gas equipment's excessive heat output causing the refrigerant temperature to rise too quickly, affecting the operational reliability of the heat pump equipment. It can also maximize the performance of the heat pump equipment for efficient heating, thereby reducing the gas cost required for gas heating, thus improving the operational reliability of the heat pump in the system and saving the overall energy cost of the system. Attached Figure Description

[0058] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0059] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0060] Figure 1 This is a schematic diagram of the system structure of an embodiment of the environmental control system of this application;

[0061] Figure 2 This is a schematic diagram of the system structure of another embodiment of the environmental control system of this application;

[0062] Figure 3 This is a schematic diagram of the equipment structure of the hardware operating environment involved in the control method of the environmental regulation system in the embodiments of this application;

[0063] Figure 4 A flowchart illustrating the control method of the environmental control system of this application (Example 1);

[0064] Figure 5 This is a flowchart illustrating Embodiment 2 of the control method for the environmental control system of this application.

[0065] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0066] It should be understood that the specific embodiments described herein are merely illustrative of the technical solutions of this application and are not intended to limit this application.

[0067] To better understand the technical solution of this application, a detailed description will be provided below in conjunction with the accompanying drawings and specific implementation methods.

[0068] The main solution of this application embodiment is: a control method based on an environmental control system, the environmental control system including a heat pump device, a gas device, and a refrigerant circulation loop, the refrigerant circulation loop including indoor terminal devices, the heat pump device and the gas device being heat exchanged with the refrigerant circulation loop, the method including: controlling the environmental control system to adjust the heat supply of the heat pump device according to a first target refrigerant temperature corresponding to the heat pump device, obtaining a first actual refrigerant temperature of the refrigerant circulation loop; when the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature, controlling the environmental control system to operate so that the gas device supplies heat with less than a preset heat amount.

[0069] In this embodiment, for ease of description, the environmental control system will be used as the implementing entity for the following description.

[0070] In related technologies, in systems where a combination of gas equipment and heat pump equipment is used as a heat source, if the gas equipment outputs too much heat when it is turned on, the water temperature in the flow path will rise too quickly, causing reliability issues with the heat pump and resulting in excessively high system energy costs.

[0071] This application provides the above-mentioned solution. After the heat pump equipment adapts to the first target refrigerant temperature and adjusts its heat supply, if the actual refrigerant temperature in the refrigerant circulation loop does not reach the system's target refrigerant temperature, the gas equipment supplements the heat with heat less than the preset heat. This avoids the gas equipment's excessive heat output causing the refrigerant temperature to rise too quickly, affecting the operational reliability of the heat pump equipment. It also allows the heat pump equipment to perform more efficiently, reducing the gas cost required for gas heating, thereby improving the operational reliability of the heat pump in the system and saving the overall energy cost of the system.

[0072] In this embodiment of the invention, reference is made to Figures 1 to 2 The environmental control system includes indoor terminal devices 400, which are installed in an indoor space to regulate the air. In this embodiment, the indoor terminal device 400 includes a convection heat exchange device 41 and / or a radiant terminal device 42. The number of indoor terminal devices 400 can be one or more, and more than one indoor terminal device 400 can be installed in different indoor spaces. When the number of indoor terminal devices 400 is more than one, more than one convection terminal device and more than one radiant terminal device 42 are connected in parallel.

[0073] The convection heat exchange device 41 includes a heat exchanger and a corresponding fan. The fan can drive the air in its environment to exchange heat with the heat exchanger, such as a fan coil unit or a ducted air conditioner.

[0074] The radiant terminal device 42 may include radiators, underfloor heating, etc.

[0075] The environmental control system may also include energy supply equipment, which provides energy for the indoor terminal equipment 400 to regulate the indoor environment.

[0076] In this embodiment, the energy supply equipment includes a heat pump device 200 and a gas device 300. The heat pump device 200 provides energy to the indoor terminal device 400 through refrigerant circulation, and the gas device 300 provides heat to the indoor terminal device 400 by burning gas. The gas device 300 may include a gas water heater or a gas wall-hung boiler, etc.

[0077] The environmental control system also includes a refrigerant circulation loop, a radiant terminal device 42 and / or a convective heat exchange device 41 located in the refrigerant circulation loop, and a heat pump device 200 and / or a gas device 300 connected to the refrigerant circulation loop for heat exchange.

[0078] The refrigerant circulation loop is filled with refrigerant, which circulates within the loop to provide energy to the radiant terminal device 42 and / or the convective heat exchange device 41. In this embodiment, the refrigerant is water. In other embodiments, the refrigerant may also be an aqueous solution of sodium chloride or calcium chloride salt, or an aqueous solution of an organic compound such as ethylene glycol or glycerol, etc.

[0079] A heat exchange module 500 can be installed in the refrigerant circulation loop. The refrigerant can circulate between the heat exchange module 500 and the indoor terminal device 400. The heat pump device 200 and / or the gas device 300 can supply energy to the heat exchange module 500 to regulate the indoor space energy supply for the indoor terminal device 400. The gas device 300 and / or the gas device 301 can be directly connected to the heat exchange module 500 for heat exchange, or the gas device 300 and / or the gas device 302 can be connected to the heat exchange module 500 for heat exchange through a circulation branch.

[0080] A fluid drive module can be installed in the refrigerant circulation loop to drive the flow of refrigerant in the loop.

[0081] When there are more than one indoor terminal device 400, a fluid regulation module 600 can be provided in the refrigerant circulation loop. The fluid regulation module 600 can be used to control the flow of refrigerant from the heat exchange module 500 into or stop the flow into each indoor terminal device 400. The fluid regulation module 600 can also be used to control the flow rate of refrigerant from the heat exchange module 500 into each indoor terminal device 400. In this embodiment, the fluid regulation module 600 includes at least two sub-regulation modules, each corresponding to one of the indoor terminal devices 400. The sub-regulation modules are configured to control the flow of refrigerant from the heat exchange module 500 into or stop the flow into the corresponding indoor terminal device 400. When the sub-regulation module is open, the refrigerant from the heat exchange module 500 is allowed to flow into the corresponding indoor terminal device 400; when the sub-regulation module is closed, the refrigerant from the heat exchange module 500 stops flowing into the corresponding indoor terminal device 400. In this embodiment, the fluid regulation module 600 is a manifold, and the sub-regulation modules are the water distribution valves in the manifold.

[0082] The heat pump device 200 includes a refrigerant circulation loop, which includes a compressor and a first heat exchanger, a throttling device, and a second heat exchanger connected in sequence.

[0083] In one implementation, the compressor's discharge port, second heat exchanger, throttling device, first heat exchanger, and compressor return port are sequentially connected. When the compressor is turned on, the refrigerant discharged by the compressor flows sequentially through the second heat exchanger, throttling device, and first heat exchanger before returning to the compressor. The second heat exchanger is in a condensing state, and the first heat exchanger is in an evaporating state.

[0084] In another implementation, the refrigerant circulation loop also includes a reversing assembly. The compressor's discharge port, return port, first heat exchanger, and second heat exchanger are all connected to the reversing assembly. The reversing assembly has a first operating state and a second operating state: When the reversing assembly is in the first operating state, the compressor's discharge port is connected to the second heat exchanger and the compressor's return port is connected to the first heat exchanger. When the compressor is turned on, the refrigerant discharged by the compressor flows sequentially through the second heat exchanger, the throttling device, and the first heat exchanger before returning to the compressor. The second heat exchanger is in a condensing state, and the first heat exchanger is in an evaporating state. When the reversing assembly is in the second operating state, the compressor's discharge port is connected to the first heat exchanger and the compressor's return port is connected to the second heat exchanger. When the compressor is turned on, the refrigerant discharged by the compressor flows sequentially through the first heat exchanger, the throttling device, and the second heat exchanger before returning to the compressor. The first heat exchanger is in a condensing state, and the second heat exchanger is in an evaporating state.

[0085] In this embodiment, both the radiant terminal device 42 and the convection heat exchange device 41 are located in the refrigerant circulation loop. The gas equipment 300 and the heat pump equipment 200 are both connected to the refrigerant circulation loop for heat exchange, so as to regulate the energy supply of the indoor space for the radiant terminal device 42 and the convection heat exchange device 41. When there is more than one radiant terminal device 42, the more than one radiant terminal device 42 can be connected in parallel; when there is more than one convection heat exchange device 41, the more than one convection heat exchange device 41 can be connected in parallel.

[0086] When the heat pump device 200 and / or the gas device 300 are turned on, the temperature of the refrigerant in the heat exchange module 500 in the refrigerant circulation loop can be adjusted. The heat carried by the refrigerant flowing out of the heat exchange module 500 can provide energy to the space where the radiant terminal device 42 and / or the convection heat exchange device 41 are located. The refrigerant flowing out of the radiant terminal device 42 and / or the convection heat exchange device 41 can flow back to the heat exchange module 500 to readjust the temperature.

[0087] In the first embodiment of the environmental control system, referring to Figure 1 The refrigerant circulation loop includes a third loop, a fourth loop, and a fifth loop. The second heat exchanger in the heat pump device 200 is connected to the third loop for heat exchange, and the gas device 300 is connected to the fourth loop for heat exchange. The radiant terminal device 42, the convection heat exchange device 41, and the heat exchange module 500 are all located in the fifth loop. Both the third and fourth loops are connected to the heat exchange module 500 for heat exchange. The corresponding heat exchange sections in the second and third loops can be integrated into the hydraulic module 800 for heat exchange. The aforementioned fluid drive module may include fluid pumps respectively installed in the third, fourth, and fifth loops.

[0088] In this embodiment, the heat exchange module 500 may include a coupling tank, a buffer tank, or a water pipe assembly, etc. The third and / or fourth loops may be connected to the heat exchange module 500, allowing the refrigerants in the third, fourth, and fifth loops to mix and exchange heat within the heat exchange module 500. The third and / or fourth loops are connected to the heat exchange module 500 via different flow paths, and the refrigerants in the third and / or fourth loops do not mix during heat exchange.

[0089] In the second embodiment of the environmental control system, referring to Figure 2The refrigerant circulation loop includes a sixth loop and a seventh loop. The radiant terminal device 42, the convection heat exchange device 41, and the heat exchange module 500 are all located in the sixth loop. The gas equipment 300 is connected to the seventh loop for heat exchange. The heat exchange module 500 includes a first heat exchange module and a second heat exchange module. The first heat exchange module is connected to the second heat exchanger in the heat pump device 200, and the second heat exchange module is connected to the seventh loop for heat exchange. The second heat exchanger and the first heat exchange module can be integrated into the hydraulic module 800 for heat exchange. The aforementioned fluid drive module may include fluid pumps respectively located in the sixth and seventh loops.

[0090] In this embodiment, the second heat exchange module may include a coupling tank, a buffer tank, or a water pipe assembly, etc. The seventh loop may be connected to the second heat exchange module, so that the refrigerant in the sixth and seventh loops can mix and exchange heat in the second heat exchange module; the seventh loop and the second heat exchange module may also be connected through different flow paths for heat exchange, and the refrigerant in the seventh loop and the second heat exchange module does not mix during the heat exchange process.

[0091] Based on the above-mentioned environmental control system, the operating modes of the environmental control system include at least the following:

[0092] In the first temperature control mode, at least one of the following is activated: the heat pump device 200 is in heating mode (the compressor's exhaust port is connected to the second heat exchanger) and the gas device 300 is activated. The fan in the convection heat exchange device 41 is activated, the sub-regulation module corresponding to the radiant terminal device 42 is activated, and the sub-regulation module corresponding to the convection heat exchange device 41 is activated. Both the convection heat exchange device 41 and the radiant terminal device 42 release heat to their respective spaces.

[0093] In the second temperature control mode, at least one of the following is activated: the heat pump device 200 operates in heating mode (the compressor's exhaust port is connected to the second heat exchanger) and the gas device 300. The fan in the convection heat exchange device 41 is turned off, the sub-regulation module corresponding to the radiant terminal device 42 is turned on, the sub-regulation module corresponding to the convection heat exchange device 41 is turned off, the convection heat exchange device 41 stops heat exchange, and the radiant terminal device 42 releases heat to its space.

[0094] In the third temperature control mode, at least one of the following is activated: the heat pump device 200 operates in heating mode (the compressor's exhaust port is connected to the second heat exchanger and the compressor's return port is connected to the first heat exchanger) and the gas device 300. The fan in the convection heat exchange device 41 is activated, the sub-regulation module corresponding to the radiant terminal device 42 is deactivated, the sub-regulation module corresponding to the convection heat exchange device 41 is activated, the convection heat exchange device 41 releases heat to its space, and the radiant terminal device 42 stops heat exchange.

[0095] In defrosting mode, the heat pump equipment 200 operates in defrosting mode (the compressor's exhaust port is connected to the first heat exchanger and the compressor's return port is connected to the second heat exchanger). When the fan in the convection heat exchange device 41 is turned on and the corresponding sub-regulation module is turned on, the convection heat exchange device 41 can release heat to its space. When the fan in the convection heat exchange device 41 is turned off and the corresponding sub-regulation module is turned off, the convection heat exchange device 41 can stop heat exchange. When the sub-regulation module corresponding to the radiant terminal device 42 is turned on, the radiant terminal device 42 releases heat to its space. When the sub-regulation module corresponding to the radiant terminal device 42 is turned off, the radiant terminal device 42 stops heat exchange. The heating capacity of the gas equipment 300 is greater than or equal to the cooling capacity released by the second heat exchanger. When at least one of the convection heat exchanger 41 and the radiant terminal device 42 is in a heat release state, the heating capacity of the gas equipment 300 is greater than the cooling capacity released by the second heat exchanger. When both the convection heat exchanger 41 and the radiant terminal device 42 stop heat exchange, the heating capacity of the gas equipment 300 may be greater than or equal to the cooling capacity released by the second heat exchanger.

[0096] In one feasible implementation, refer to Figures 1 to 2 The heat pump device 200 (such as an outdoor unit and / or a hydraulic module 800) can communicate with the gas appliance 300, the gas appliance 300 can communicate with the fluid regulating module 600, and the convection heat exchange device 41 can communicate with the gas appliance 300. When the heat pump device 200 includes an outdoor unit, the aforementioned first heat exchanger, throttling device, and compressor can be located in the outdoor unit.

[0097] Each indoor space regulated by the environmental control system can be equipped with a wired controller 700. The convection heat exchange device 41 and the sub-controller module can be bound and communicated with the wired controller 700 in a one-to-one correspondence. The wired controller 700 can control at least one of the following: the sub-controller module, the fluid pump, the gas equipment 300, the total target refrigerant temperature, the set temperature of the indoor space, etc.

[0098] Reference Figure 3 The environmental control system also includes an environmental detection module 01, which can be used to detect environmental parameters of the environment in which the environmental control system is located (e.g., at least one of the following: ambient temperature, ambient humidity, ambient enthalpy, ambient dew point temperature). The environmental detection module 01 may include an indoor detection module and / or an outdoor detection module. The indoor detection module may be located in the indoor space regulated by the environmental control system (e.g., on the wired controller 700 or the return air vent of the convection heat exchange device 41), and the outdoor detection module may be located in the outdoor environment where the environmental control system is located.

[0099] Reference Figure 3The environmental control system may also include a temperature detection module 02. The temperature detection module 02 can be used in the refrigerant circulation loop to detect and control the required refrigerant temperature. For example, the temperature detection module 02 may be set in at least one of the following locations: the liquid outlet of the heat exchange module 500, the liquid return port of the heat exchange module 500, the liquid outlet of the gas equipment 300, the liquid return port of the gas equipment 300, the liquid outlet of the hydraulic module 800, the liquid return port of the hydraulic module 800, the main liquid supply port of the fluid regulation module 600, the main liquid return port of the fluid regulation module 600, etc.

[0100] Reference Figure 3 The environmental control system also includes a control device 100. The aforementioned heat pump equipment 200, gas equipment 300, convection heat exchange device 41, environmental detection module 01, temperature detection module 02, and refrigerant circulation loop (such as fluid regulation module 600, fluid drive module, etc.) are all connected to the control device 100.

[0101] The control device 100 includes: at least one processor 1001; and a memory 1002 communicatively connected to the at least one processor 1001, and a timer 1003, etc.; wherein the memory 1002 stores instructions that can be executed by the at least one processor 1001, the instructions being executed by the at least one processor 1001 to enable the at least one processor 1001 to execute the control method of the environmental regulation system in the following embodiment.

[0102] The following is for reference. Figure 3 The diagram illustrates a structural schematic of a control device 100 suitable for implementing embodiments of this application. The environmental control system in the embodiments of this application may include, but is not limited to, mobile terminals such as mobile phones, laptops, digital radio receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Description), PMPs (Portable Media Players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computers. Figure 3 The control device 100 shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments of this application.

[0103] like Figure 3As shown, the control device 100 may include a processor 1001 (e.g., a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to a program stored in memory 1002. The program in memory 1002 may be a program in read-only memory (ROM) or a program loaded from a storage device into random access memory (RAM). The RAM also stores various programs and data required for the operation of the control device 100. The processor 1001 and memory 1002 (ROM and RAM) are interconnected via a bus. Input / output (I / O) interfaces are also connected to the bus. Typically, the following systems can be connected to the I / O interface: input devices including, for example, touchscreens, touchpads, keyboards, mice, image sensors, microphones, accelerometers, gyroscopes, etc.; output devices including, for example, liquid crystal displays (LCDs), speakers, vibrators, etc.; storage devices including, for example, magnetic tapes, hard disks, etc.; and communication devices. The communication device allows the control device 100 to communicate wirelessly or wiredly with other devices to exchange data. Although the control unit 100 with various systems is shown in the figure, it should be understood that it is not required to implement or have all of the systems shown. More or fewer systems may be implemented or have alternatively.

[0104] Specifically, according to the embodiments disclosed in this application, the method flow described in the following embodiments can be implemented as a computer software program. For example, the embodiments disclosed in this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from a network via a communication device, or installed from memory 1002. When the computer program is executed by processor 1001, it performs the functions defined in the control method of the environmental control system of the embodiments disclosed in this application.

[0105] The environmental control system provided in this application, employing the control method of the environmental control system in the following embodiments, can solve the technical problem of how to improve the operational reliability of the heat pump in the system and save the overall energy cost of the system. Compared with the prior art, the beneficial effects of the environmental control system provided in this application are the same as the beneficial effects of the control method of the environmental control system provided in the following embodiments, and other technical features of this environmental control system are the same as those disclosed in the method of the following embodiments, and will not be repeated here.

[0106] It should be noted that the executing entity in this embodiment can be a computing service device with data processing, network communication, and program execution functions, such as a tablet computer, personal computer, or mobile phone, or an electronic device or environmental control system capable of performing the above functions. The following description uses an environmental control system as an example to illustrate this embodiment and the subsequent embodiments.

[0107] Based on this, embodiments of this application provide a control method for an environmental control system, referring to... Figure 4 , Figure 4 This is a flowchart illustrating the first embodiment of the control method for the environmental control system of this application.

[0108] In this embodiment, the environmental control system includes a heat pump device, a gas device, and a refrigerant circulation loop. The refrigerant circulation loop includes indoor terminal devices. Both the heat pump device and the gas device are connected to the refrigerant circulation loop for heat exchange. The control method of the environmental control system includes steps S10 to S20:

[0109] Step S10: Control the environmental conditioning system to adjust the heat supply of the heat pump device according to the first target refrigerant temperature corresponding to the heat pump device, and obtain the first actual refrigerant temperature of the refrigerant circulation loop.

[0110] In this embodiment, when the preset function is enabled, the environmental control system is in a supplementary energy mode (e.g., a supplementary heating mode), and step S10 is executed in the supplementary energy mode. The preset function is enabled or disabled in response to user commands. The supplementary energy mode is configured to cooperate between the convective heat exchange device and the radiant terminal device to meet the temperature comfort requirements of the target space.

[0111] The first target refrigerant temperature is the target value of the refrigerant temperature in the first heat exchange section of the heat pump equipment, which is connected in the refrigerant circulation loop. The first target refrigerant temperature is the maximum target refrigerant temperature allowed for efficient heating by the heat pump equipment. The first target refrigerant temperature may include at least one of the following: the target outlet temperature of the first heat exchange section, the target return temperature of the first heat exchange section, or the target refrigerant temperature within the first heat exchange section.

[0112] The environmental control system is operated to increase or decrease the heat supply of the heat pump equipment based on the first target refrigerant temperature and the actual refrigerant temperature of the first heat exchange section.

[0113] The methods to increase the heat output of a heat pump device may include at least one of the following: increasing the frequency of the compressor, increasing the speed of the fan corresponding to the first heat exchanger and / or the second heat exchanger, increasing the refrigerant flow rate of the first heat exchanger section by the fluid drive module, turning on the heat pump device, etc.

[0114] Methods to reduce the heat output of a heat pump device may include at least one of the following: reducing the compressor frequency, reducing the speed of the fan corresponding to the first heat exchanger and / or the second heat exchanger, reducing the refrigerant flow rate of the first heat exchanger section by the fluid drive module, shutting down the heat pump device, etc.

[0115] During the process of obtaining the actual refrigerant temperature, the heat pump equipment can be in heating mode or in a non-heating mode.

[0116] The first actual refrigerant temperature is the actual refrigerant temperature at the target location in the refrigerant circulation loop. The first actual refrigerant temperature can be one of the following parameters: the actual refrigerant temperature inside the heat exchange module (e.g., a buffer tank or coupling tank), the actual outlet temperature of the heat exchange module (e.g., a buffer tank, coupling tank, or hydraulic module), the actual return temperature of the aforementioned heat exchange module (e.g., a buffer tank, coupling tank, or hydraulic module), the actual outlet temperature of the fluid regulating module, the actual return temperature of the fluid regulating module, etc. In this embodiment, the first actual refrigerant temperature is the refrigerant temperature after absorbing heat from the heat pump equipment and the gas equipment in the refrigerant circulation loop, such as the actual refrigerant temperature of the heat exchange module or the actual outlet temperature of the fluid regulating module.

[0117] Step S20: When the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature, control the operation of the environmental conditioning system to make the gas equipment provide heat with less than the preset heat, wherein the system target refrigerant temperature is greater than or equal to the first target refrigerant temperature.

[0118] The system target refrigerant temperature represents the total heat demand of the environmental control system. The system target refrigerant temperature is the target temperature that the refrigerant at the target location in the pre-set refrigerant circulation loop needs to reach. The system target refrigerant temperature can be a user-set temperature or a temperature obtained by correcting a user-set temperature.

[0119] The target refrigerant temperature of the system can be one of the following parameters: the target refrigerant temperature in the heat exchange module (e.g., buffer tank or coupling tank), the target outlet temperature of the heat exchange module (e.g., buffer tank or coupling tank or hydraulic module), the target return temperature of the aforementioned heat exchange module (e.g., buffer tank or coupling tank or hydraulic module), the target outlet temperature of the fluid conditioning module, the target return temperature of the fluid conditioning module, etc.

[0120] The first target refrigerant temperature can be determined based on the system target refrigerant temperature and the ambient temperature, and the first target refrigerant temperature can be positively correlated with the ambient temperature.

[0121] In this embodiment, the heat can be a pre-set fixed heat value. The pre-set heat value can also be determined based on the actual operating conditions of the environmental control system, such as based on the first target refrigerant temperature, the system target refrigerant temperature, and / or the ambient temperature and / or the current temperature of the refrigerant in the heat exchange module.

[0122] The heat output of a gas-fired appliance can be limited by at least one of the following parameters: the opening degree of the gas proportional valve, the speed of the fan in the gas-fired appliance, the number of combustion burners, the flow rate of the refrigerant exchanging heat with the gas-fired appliance, and the on / off state of the gas-fired appliance, etc. Among these, adjusting the fan speed can adjust the amount of air circulating during the combustion process of the gas-fired appliance.

[0123] In this embodiment, the heat supply of the gas equipment is made less than the preset heat supply through at least one of the following methods:

[0124] Control the gas proportional valve of the gas equipment to operate at an opening degree less than a preset degree; and / or,

[0125] The number of burners controlling the combustion of the gas equipment is less than a preset number; and / or,

[0126] The fan in the gas equipment is controlled to operate at a speed lower than the preset speed.

[0127] In this embodiment, the preset heat capacity is the maximum heat capacity of the gas equipment, the preset opening degree is the maximum opening degree of the gas proportional valve; and / or, the preset quantity is the maximum number of burners in the gas equipment; and / or, the preset speed is the maximum speed of the fan in the gas equipment. Based on this, the gas equipment can be restricted from outputting maximum heat capacity during supplementary heating.

[0128] In other implementations, if the heat supply of the gas equipment is less than the preset heat supply, the heat supply of the gas equipment can also be controlled by a target refrigerant temperature that is lower than the preset target refrigerant temperature. The preset target refrigerant temperature can be determined based on the system target refrigerant temperature and the first target refrigerant temperature.

[0129] This embodiment provides a control method for an environmental control system. After the heat pump equipment adapts to the first target refrigerant temperature and adjusts its heat supply, if the actual refrigerant temperature in the refrigerant circulation loop does not reach the system's target refrigerant temperature, the gas equipment supplements the heat with a heat less than the preset heat. This avoids excessive heat output from the gas equipment, which could cause the refrigerant temperature to rise too quickly and affect the operational reliability of the heat pump equipment. It also allows the heat pump equipment to perform more efficiently, reducing the gas cost required for gas heating, thereby improving the operational reliability of the heat pump in the system and saving overall system energy costs.

[0130] Based on any of the above embodiments, in the second embodiment of this application, the same or similar content as the above embodiments can be referred to the above description, and will not be repeated hereafter. Based on this, refer to... Figure 5 After the step of controlling the operation of the environmental conditioning system to enable the gas equipment to provide heat at a level lower than the preset heat value, the method further includes:

[0131] Step S30: Obtain the second actual refrigerant temperature of the refrigerant circulation loop;

[0132] The second actual refrigerant temperature is the current refrigerant temperature at the target location mentioned above.

[0133] Step S40: Control the environmental conditioning system to adjust the heat supply of the gas equipment according to the second actual refrigerant temperature and the system target refrigerant temperature.

[0134] Adjusting the heating capacity of a gas appliance may include maintaining the heating capacity of the gas appliance, reducing the heating capacity of the gas appliance, or increasing the heating capacity of the gas appliance.

[0135] The environmental control system can adjust the gas equipment to adjust the heating supply based on the temperature difference or magnitude between the second actual refrigerant temperature and the system target refrigerant temperature.

[0136] In this embodiment, a first temperature difference value is determined between the second actual refrigerant temperature and the system target refrigerant temperature; when the first temperature difference value is less than a first preset temperature difference, the environmental control system is controlled to operate to increase the heat supply of the gas equipment; when the first temperature difference value is greater than or equal to the first preset temperature difference and less than a second preset temperature difference, the environmental control system is controlled to maintain the current heat supply of the gas equipment; when the first temperature difference value is greater than or equal to the second preset temperature difference, the environmental control system is controlled to operate to reduce the heat supply of the gas equipment; wherein, the first preset temperature difference is less than the second preset temperature difference.

[0137] In this embodiment, the step of controlling the operation of the environmental conditioning system to increase the heat supply of the gas equipment includes at least one of the following: controlling the gas proportional valve of the gas equipment to increase its opening degree; controlling the gas equipment to increase the number of combustion burners; and controlling the fan in the gas equipment to increase its operating speed.

[0138] In this embodiment, the step of controlling the operation of the environmental conditioning system to reduce the heat supply of the gas equipment includes at least one of the following: controlling the gas proportional valve of the gas equipment to reduce its opening; controlling the gas equipment to reduce the number of combustion burners; and controlling the fan in the gas equipment to reduce its operating speed.

[0139] During the process of increasing or decreasing the heating capacity of the gas equipment, the corresponding operating adjustment parameters (such as at least one of the following: opening adjustment value, number of burners adjustment value, and fan speed adjustment value) can be fixed parameters that are set in advance, or parameters that are determined according to the actual operating conditions of the environmental control system. For example, the operating adjustment parameters can be determined according to the temperature difference between the system refrigerant temperature and the second actual refrigerant temperature.

[0140] In this embodiment, during the execution of steps S20 to S40, the heat pump equipment can maintain or stop heating, or adjust the heat output of the heat pump equipment according to the first target refrigerant temperature control environment regulation device. After step S40, the execution can return to step S30 or step S10, thereby realizing the gradual adjustment of the heating output of the gas equipment.

[0141] In this embodiment, when the refrigerant temperature in the refrigerant circulation loop is too low and the gas equipment needs to supplement the heat, the gas equipment first supplements the heat with a low output, and then gradually adjusts the output of the gas equipment based on the actual refrigerant temperature. This allows the heat pump and the gas equipment to have sufficient response time, which is conducive to giving full play to the high-efficiency heating performance of the heat pump equipment. This ensures the reliability of the heat pump equipment, saves system energy costs, and effectively improves the system's energy efficiency.

[0142] In other embodiments, the heating capacity of the gas equipment can also be adjusted by controlling the environmental conditioning system based on the system target refrigerant temperature, the first target refrigerant temperature, and the second actual refrigerant temperature.

[0143] Based on any of the above embodiments, in this embodiment, the first heat exchange section in the refrigerant circulation loop is connected to the heat pump device for heat exchange, and the step of controlling the environmental conditioning system to adjust the heat supply of the heat pump device according to the first target refrigerant temperature corresponding to the heat pump device includes:

[0144] When the temperature difference between the actual refrigerant temperature of the first heat exchange section and the first target refrigerant temperature is less than or equal to the third preset temperature difference, the environmental control system is controlled to operate in order to improve the heat supply of the heat pump equipment.

[0145] When the temperature difference between the actual refrigerant temperature in the first heat exchange section and the first target refrigerant temperature is greater than the third preset temperature difference, the environmental control system is controlled to reduce the heat supply of the heat pump equipment.

[0146] The actual refrigerant temperature of the first heat exchange section may include at least one of the following: the actual return liquid temperature of the first heat exchange section, the actual outlet liquid temperature of the first heat exchange section, and the actual refrigerant temperature inside the first heat exchange section.

[0147] In this embodiment, when the compressor in the heat pump device is in the on state, step S10 is executed and then step S20 is executed; when the compressor is in the off state, step S20 is executed after obtaining the first actual refrigerant temperature of the refrigerant circulation loop.

[0148] In the process of increasing the heat output of a heat pump, the compressor frequency of the heat pump can be increased and / or the fan speed of the heat pump can be increased and / or the corresponding fluid pump of the heat pump can be increased based on the first temperature difference value.

[0149] During the process of reducing the heat supply of the heat pump equipment, the compressor of the heat pump equipment is controlled to reduce its frequency and / or the fan of the heat pump equipment is controlled to reduce its speed and / or the corresponding fluid pump of the heat pump equipment is controlled to reduce its speed, or the heat pump equipment is stopped from supplying heat, based on the first temperature difference value.

[0150] In this embodiment, the above method ensures that the heat pump equipment can accurately regulate the heating according to the required heat, thereby effectively improving the system's energy efficiency.

[0151] In other embodiments, the heat pump equipment can also be controlled to adjust the heat supply based on the actual refrigerant temperature of the first heat exchange section, the first target refrigerant temperature, and the system target refrigerant temperature.

[0152] Based on any of the above embodiments, in this embodiment, before the step of controlling the operation of the environmental conditioning system to enable the gas equipment to provide heat at a temperature less than a preset heat value, the method further includes:

[0153] When the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature, and the temperature difference between the first actual refrigerant temperature and the system target refrigerant temperature is less than or equal to a fourth preset temperature difference, the environmental control system is controlled to start the heating of the gas equipment; or,

[0154] When the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature and the temperature difference between the first actual refrigerant temperature and the first target refrigerant temperature is less than or equal to a fifth preset temperature difference, the environmental control system is controlled to start the heating of the gas equipment.

[0155] In this embodiment, both the fourth preset temperature difference and the fifth preset temperature difference are less than 0, and the fourth preset temperature difference is less than the fifth preset temperature difference.

[0156] In this embodiment, the heat pump equipment is in heating mode before the gas equipment starts supplying heat.

[0157] After the gas-fired equipment starts supplying heat, the step of controlling the operation of the environmental regulation system can be executed to enable the gas-fired equipment to supply heat at a rate lower than the preset heat value.

[0158] In this embodiment, the temperature difference between the system refrigerant temperature and the first actual refrigerant temperature accurately reflects the deviation between the heat pump equipment's heating supply and the heating demand. When this temperature difference is less than or equal to the fourth preset temperature difference, it indicates that the gas equipment has a high heat demand and the heat pump equipment has insufficient heat. At this time, the gas equipment is activated for heat compensation, thereby enabling the system to quickly and accurately reach the target refrigerant temperature while ensuring system energy efficiency through the cooperation of the heat pump equipment and the gas equipment. In addition, the temperature difference between the first actual refrigerant temperature and the first target refrigerant temperature accurately reflects the deviation between the actual refrigerant temperature in the refrigerant circulation loop under the current heat pump equipment regulation and the target temperature that can be achieved under the heat pump equipment regulation. When the system's actual refrigerant temperature has not reached the system's target refrigerant temperature, the system's actual refrigerant temperature is much lower than the heat pump equipment's target refrigerant temperature, indicating that the current output of the heat pump equipment cannot adjust the system's refrigerant temperature to the system's target refrigerant temperature, and the demand for supplementary heat from the gas equipment is large. At this time, the gas equipment is activated for heating, which is beneficial to ensuring the improvement of the system's heating efficiency.

[0159] In this embodiment, when the temperature difference between the first actual refrigerant temperature and the system target refrigerant temperature is greater than a fourth preset temperature difference, or when the first actual refrigerant temperature is greater than the system target refrigerant temperature, or when the temperature difference between the first actual refrigerant temperature and the first target refrigerant temperature is greater than a fifth preset temperature difference, the environmental control system is controlled to stop the gas equipment from supplying heat.

[0160] In one feasible implementation of this embodiment, the first heat exchange section in the refrigerant circulation loop is connected to the heat pump device for heat exchange. Before the step of controlling the operation of the environmental conditioning system to enable the gas equipment to provide heat with a temperature less than a preset heat value, the method further includes:

[0161] When the temperature difference between the actual refrigerant temperature of the first heat exchange section and the first target refrigerant temperature is less than or equal to a third preset temperature difference, the step of controlling the environmental conditioning system to start the heating of the gas equipment when the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature and the temperature difference between the first actual refrigerant temperature and the system target refrigerant temperature is less than or equal to a fourth preset temperature difference is executed.

[0162] If the temperature difference between the actual refrigerant temperature and the first target refrigerant temperature in the first heat exchange section is greater than a third preset temperature difference, the step of controlling the environmental control system to start the heating of the gas equipment is executed when the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature and the temperature difference between the first actual refrigerant temperature and the first target refrigerant temperature is less than or equal to a fifth preset temperature difference.

[0163] When the temperature difference between the actual refrigerant temperature of the first heat exchange section and the first target refrigerant temperature is less than or equal to a third preset temperature difference, after controlling the operation of the environmental control system to increase the heat supply of the heat pump equipment, the following steps are performed: when the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature and the temperature difference between the first actual refrigerant temperature and the system target refrigerant temperature is less than or equal to a fourth preset temperature difference, the following steps are performed: when the temperature difference between the actual refrigerant temperature of the first heat exchange section and the first target refrigerant temperature is greater than a third preset temperature difference, after controlling the operation of the environmental control system to reduce the heat supply of the heat pump equipment, the following steps are performed: when the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature and the temperature difference between the first actual refrigerant temperature and the first target refrigerant temperature is less than or equal to a fifth preset temperature difference, the following steps are performed:

[0164] In this embodiment, when the refrigerant temperature of the first heat exchange section is low under the heat pump regulation, starting the gas equipment when the first actual refrigerant temperature is significantly lower than the system target refrigerant temperature ensures that the gas equipment can fully compensate for heat, enabling the temperature of the refrigerant circulation loop to quickly and accurately reach the system target refrigerant temperature. When the refrigerant temperature of the first heat exchange section is high under the heat pump regulation, when the first actual refrigerant temperature is significantly lower than the system target refrigerant temperature, it indicates that the output of the heat pump equipment under its current high-efficiency heating mode cannot adjust the system refrigerant temperature to the system target refrigerant temperature, resulting in a large demand for supplemental heating from the gas equipment. In this case, starting the gas equipment for heating is beneficial to ensuring the improvement of system energy efficiency and heating efficiency.

[0165] Based on any of the above embodiments, in this embodiment, step S20 includes: when the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature and the heat pump equipment does not meet the defrosting conditions, controlling the operation of the environmental conditioning system to make the gas equipment provide heat with less than the preset heat.

[0166] In one implementation, when the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature and the temperature difference between the first actual refrigerant temperature and the system target refrigerant temperature is less than or equal to a fourth preset temperature difference, if the heat pump equipment does not meet the defrosting conditions after the gas equipment starts heating, the environmental control system can be controlled to operate so that the gas equipment provides heating with a heat value less than the preset heat value.

[0167] In another implementation, when the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature and the temperature difference between the first actual refrigerant temperature and the first target refrigerant temperature is less than or equal to a fifth preset temperature difference, if the heat pump equipment does not meet the defrosting conditions after the gas equipment starts heating, the environmental control system can be controlled to operate so that the gas equipment provides heating with a heat value less than the preset heat value.

[0168] In this embodiment, since the heat pump equipment can provide heat normally when there is no need for defrosting, limiting the heat supply of the gas equipment when the system refrigerant temperature has not reached the required temperature is beneficial to ensuring the reliable operation of the heat pump equipment under normal heating conditions.

[0169] In one feasible implementation of this embodiment, after step S10, the method further includes:

[0170] When the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature and the heat pump equipment meets the defrosting conditions, the environmental control system is controlled to operate so that the gas equipment provides heat with a heat level greater than or equal to the preset heat level.

[0171] When the defrosting conditions are met, the heat pump equipment can start defrosting operation. During the defrosting operation of the heat pump equipment, the second heat exchanger mentioned above is in an evaporation state. During the defrosting operation of the heat pump equipment, the environmental conditioning system is controlled to operate so that the gas equipment provides heat with a heat value greater than or equal to the preset heat value.

[0172] The gas equipment can provide heat with a heat value greater than or equal to a preset heat value through at least one of the following methods: controlling the gas proportional valve of the gas equipment to operate at an opening value greater than or equal to a preset opening value; controlling the number of burners in the gas equipment to be greater than or equal to a preset number; controlling the fan in the gas equipment to operate at a speed greater than or equal to a preset speed.

[0173] In this embodiment, when the heat pump equipment has a defrosting requirement, the heat supply of the gas equipment is not limited, and a large heat output is made. It can provide heat for indoor heating and defrosting at the same time, meeting the indoor heating demand while improving defrosting efficiency.

[0174] In one feasible implementation, the method further includes: determining a second target refrigerant temperature for the gas appliance based on the system target refrigerant temperature and the first target refrigerant temperature. Here, the system heating capacity can be determined based on the system target refrigerant temperature, the heat pump heating capacity can be determined based on the first target refrigerant temperature, the target heating capacity of the gas appliance can be determined based on the difference between the system heating capacity and the heat pump heating capacity, and the second target refrigerant temperature can be determined based on the target heating capacity.

[0175] After the step of controlling the operation of the environmental control system to enable the gas equipment to provide heat with a heat value greater than or equal to the preset heat value when the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature and the heat pump equipment meets the defrosting conditions, the method further includes: controlling the operation of the environmental control system to adjust the heat supply of the gas equipment according to the second target refrigerant temperature.

[0176] In this embodiment, the second heat exchange section in the refrigerant circulation loop is connected to the gas equipment for heat exchange. The step of controlling the operation of the environmental control system to adjust the heat supply of the gas equipment according to the second target refrigerant temperature includes: when the temperature difference between the actual refrigerant temperature of the second heat exchange section and the second target refrigerant temperature is greater than or equal to a sixth preset temperature difference, controlling the operation of the environmental control system to reduce the heat supply of the gas equipment; when the temperature difference between the actual refrigerant temperature of the second heat exchange section and the second target refrigerant temperature is less than the sixth preset temperature difference, controlling the operation of the environmental control system to maintain the heat supply of the gas equipment.

[0177] The actual refrigerant temperature of the second heat exchange section includes at least one of the following: the actual inlet temperature of the second heat exchange section, the actual outlet temperature of the second heat exchange section, and the actual refrigerant temperature inside the second heat exchange section.

[0178] In this embodiment, the step of controlling the operation of the environmental conditioning system to reduce the heat supply of the gas equipment includes: controlling the gas proportional valve of the gas equipment to reduce its opening; and / or controlling the gas equipment to reduce the number of combustion burners; and / or controlling the fan in the gas equipment to reduce its operating speed.

[0179] In this embodiment, after the heat pump equipment has a defrosting requirement and the gas equipment outputs a large amount of heat, the heat supply of the gas equipment is further adjusted based on the target refrigerant temperature and the actual refrigerant temperature for its heat replenishment requirement. This effectively ensures that the heat output of the gas equipment is not too large, thereby saving gas costs while ensuring indoor heating comfort and reliability.

[0180] It should be noted that the above examples are only for understanding this application and do not constitute a limitation on the control method of the environmental control system of this application. Any simple modifications based on this technical concept are within the protection scope of this application.

[0181] This application provides a computer-readable storage medium having computer-readable program instructions (i.e., a computer program) stored thereon, the computer-readable program instructions being used to execute the control method of the environmental control system in the above embodiments.

[0182] The computer-readable storage medium provided in this application may be, for example, a USB flash drive, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, system, or device. The program code contained on the computer-readable storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0183] The aforementioned computer-readable storage medium may be included in the environmental control system; or it may exist independently and not be assembled into the environmental control system.

[0184] The aforementioned computer-readable storage medium carries one or more programs that, when executed by the environmental control system, cause the environmental control system to perform the following process: controlling the environmental control system to adjust the heat supply of the heat pump device according to the first target refrigerant temperature corresponding to the heat pump device, and obtaining the first actual refrigerant temperature of the refrigerant circulation loop; when the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature, controlling the environmental control system to operate so that the gas device supplies heat with a heat less than a preset heat.

[0185] Computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a Local Area Network (LAN) or a Wide Area Network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0186] The readable storage medium provided in this application is a computer-readable storage medium that stores computer-readable program instructions (i.e., a computer program) for executing the control method of the above-described environmental control system. This addresses the technical problem of improving the reliability of heat pump operation and saving overall system energy costs. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in this application are the same as those of the control method of the environmental control system provided in the above embodiments, and will not be elaborated upon here.

[0187] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0188] It should be understood that the various parts disclosed in this application can be implemented using hardware, software, firmware, or a combination thereof. Modules described in the embodiments of this application can be implemented in software or hardware. The names of modules do not necessarily limit the specific unit itself. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0189] The above descriptions are merely some embodiments of this application and do not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the content of this specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application. Therefore, the protection scope of this application should be determined by the scope of the claims.

Claims

1. A control method for an environmental control system, characterized in that, The environmental control system includes a heat pump device, a gas equipment, and a refrigerant circulation loop. The refrigerant circulation loop includes indoor terminal equipment. Both the heat pump device and the gas equipment are connected to the refrigerant circulation loop for heat exchange. The method includes: Based on the first target refrigerant temperature corresponding to the heat pump equipment, the environmental conditioning system is controlled to adjust the heat supply of the heat pump equipment, and the first actual refrigerant temperature of the refrigerant circulation loop is obtained. When the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature, the environmental control system is controlled to operate so that the gas equipment provides heat with a heat value less than the preset heat value. Wherein, the target refrigerant temperature of the system is greater than or equal to the first target refrigerant temperature.

2. The method as described in claim 1, characterized in that, The step of controlling the operation of the environmental conditioning system to enable the gas equipment to provide heat at a rate less than a preset heat value includes: Control the gas proportional valve of the gas equipment to operate at an opening degree less than a preset degree; and / or, The number of burners controlling the combustion of the gas equipment is less than a preset number; and / or, The fan in the gas equipment is controlled to operate at a speed lower than the preset speed.

3. The method as described in claim 2, characterized in that, The preset heat is the maximum heat, the preset opening degree is the maximum opening degree of the gas proportional valve; and / or, the preset quantity is the maximum number of burners in the gas equipment; and / or, the preset speed is the maximum speed of the fan in the gas equipment.

4. The method as described in claim 1, characterized in that, After the step of controlling the operation of the environmental conditioning system to enable the gas equipment to provide heat at a level lower than a preset heat value, the method further includes: Obtain the second actual refrigerant temperature of the refrigerant circulation loop; The environmental control system adjusts the heat supply of the gas equipment based on the second actual refrigerant temperature and the system target refrigerant temperature.

5. The method as described in claim 4, characterized in that, The step of controlling the environmental conditioning system to adjust the heat supply of the gas equipment based on the second actual refrigerant temperature and the system target refrigerant temperature includes: Determine a first temperature difference between the second actual refrigerant temperature and the system target refrigerant temperature; When the first temperature difference is less than the first preset temperature difference, the environmental control system is controlled to operate to increase the heat supply of the gas equipment; When the first temperature difference is greater than or equal to the first preset temperature difference and less than the second preset temperature difference, the environmental control system is controlled to maintain the current heat supply of the gas equipment. When the first temperature difference is greater than or equal to the second preset temperature difference, the environmental control system is controlled to reduce the heat supply of the gas equipment. Wherein, the first preset temperature difference is less than the second preset temperature difference.

6. The method as described in claim 5, characterized in that, The step of controlling the operation of the environmental control system to increase the heat supply of the gas equipment includes: Control the gas proportional valve of the gas equipment to increase its opening; and / or, Control the gas equipment to increase the number of combustion burners; and / or, Control the fan in the gas equipment to increase its speed.

7. The method as described in claim 5, characterized in that, The step of controlling the operation of the environmental control system to reduce the heat supply of the gas equipment includes: Control the gas proportional valve of the gas equipment to reduce its opening; and / or, Control the gas equipment to reduce the number of combustion burners; and / or, Control the fan in the gas equipment to reduce its operating speed.

8. The method as described in claim 1, characterized in that, The first heat exchange section in the refrigerant circulation loop is connected to the heat pump device for heat exchange. The step of controlling the environmental conditioning system to adjust the heat supply of the heat pump device according to the first target refrigerant temperature corresponding to the heat pump device includes: When the temperature difference between the actual refrigerant temperature of the first heat exchange section and the first target refrigerant temperature is less than or equal to the third preset temperature difference, the environmental control system is controlled to operate in order to improve the heat supply of the heat pump equipment. When the temperature difference between the actual refrigerant temperature in the first heat exchange section and the first target refrigerant temperature is greater than the third preset temperature difference, the environmental control system is controlled to reduce the heat supply of the heat pump equipment.

9. The method as described in claim 1, characterized in that, The step of controlling the operation of the environmental conditioning system to enable the gas equipment to provide heat at a rate less than the preset heat value when the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature includes: If the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature and the heat pump equipment does not meet the defrosting conditions, the environmental control system is controlled to operate so that the gas equipment provides heat with a heat value less than the preset heat value.

10. The method as described in claim 9, characterized in that, After the step of obtaining the first actual refrigerant temperature of the refrigerant circulation loop, the method further includes: When the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature and the heat pump equipment meets the defrosting conditions, the environmental control system is controlled to operate so that the gas equipment provides heat with a heat level greater than or equal to the preset heat level.

11. The method as described in claim 10, characterized in that, The method further includes: The second target refrigerant temperature of the gas equipment is determined based on the system target refrigerant temperature and the first target refrigerant temperature. After the step of controlling the operation of the environmental control system to enable the gas equipment to provide heat with a heat value greater than or equal to the preset heat value when the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature and the heat pump equipment meets the defrosting conditions, the method further includes: The environmental control system is operated to adjust the heat supply of the gas equipment based on the second target refrigerant temperature.

12. The method as described in claim 11, characterized in that, The second heat exchange section in the refrigerant circulation loop is connected to the gas equipment for heat exchange. The step of controlling the operation of the environmental control system and adjusting the heat supply of the gas equipment according to the second target refrigerant temperature includes: When the temperature difference between the actual refrigerant temperature in the second heat exchange section and the second target refrigerant temperature is greater than or equal to the sixth preset temperature difference, the environmental control system is controlled to reduce the heat supply of the gas equipment.

13. The method as described in claim 12, characterized in that, The step of controlling the operation of the environmental control system to reduce the heat supply of the gas equipment includes: Control the gas proportional valve of the gas equipment to reduce its opening; and / or, Control the gas equipment to reduce the number of combustion burners; and / or, Control the fan in the gas equipment to reduce its operating speed.

14. The method according to any one of claims 1 to 13, characterized in that, Before the step of controlling the operation of the environmental conditioning system to enable the gas equipment to provide heat at a level lower than a preset heat value, the method further includes: When the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature, and the temperature difference between the first actual refrigerant temperature and the system target refrigerant temperature is less than or equal to a fourth preset temperature difference, the environmental control system is controlled to start the heating of the gas equipment; or, When the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature and the temperature difference between the first actual refrigerant temperature and the first target refrigerant temperature is less than or equal to a fifth preset temperature difference, the environmental control system is controlled to start the heating of the gas equipment.

15. The method as described in claim 14, characterized in that, The first heat exchange section in the refrigerant circulation loop is connected to the heat pump equipment for heat exchange. Before the step of controlling the operation of the environmental conditioning system to enable the gas equipment to provide heat with a temperature less than a preset heat value, the method further includes: When the temperature difference between the actual refrigerant temperature of the first heat exchange section and the first target refrigerant temperature is less than or equal to a third preset temperature difference, the step of controlling the environmental conditioning system to start the heating of the gas equipment when the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature and the temperature difference between the first actual refrigerant temperature and the system target refrigerant temperature is less than or equal to a fourth preset temperature difference is executed. If the temperature difference between the actual refrigerant temperature and the first target refrigerant temperature in the first heat exchange section is greater than a third preset temperature difference, the step of controlling the environmental control system to start the heating of the gas equipment is executed when the first actual refrigerant temperature is less than or equal to the system target refrigerant temperature and the temperature difference between the first actual refrigerant temperature and the first target refrigerant temperature is less than or equal to a fifth preset temperature difference.

16. An environmental control system, characterized in that, The environmental control system includes a control device, a heat pump device, a gas device, and a refrigerant circulation loop. The refrigerant circulation loop includes indoor terminal devices. Both the heat pump device and the gas device are connected to the refrigerant circulation loop for heat exchange. The gas equipment, the gas equipment, and the refrigerant circulation loop are all connected to the control device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor. The computer program is configured to implement the steps of the control method for the environmental conditioning system as described in any one of claims 1 to 15.

17. A storage medium, characterized in that, The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, it implements the steps of the control method of the environmental control system as described in any one of claims 1 to 15.

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