Control method of heat pump system, heat pump system and storage medium

Abstract

The invention discloses a control method of a heat pump system, the heat pump system and a storage medium. The heat pump system comprises an energy storage device, a compressor, a reversing assembly, an indoor heat exchanger and an outdoor heat exchanger, the compressor, the energy storage device, the reversing assembly, the indoor heat exchanger and the outdoor heat exchanger are sequentially connected to form a refrigerant loop, and the energy storage device is arranged between an exhaust port of the compressor and the reversing assembly. The heat pump system further comprises a driving component arranged corresponding to the outdoor heat exchanger and / or the indoor heat exchanger, the driving component is used for driving fluid to exchange heat with the corresponding heat exchanger, and the method comprises the steps that when the energy storage device is in a heat storage state, the first temperature of a refrigerant flowing out of the energy storage device is obtained; and according to the first temperature, driving parts corresponding to condensers in the indoor heat exchanger and the outdoor heat exchanger are controlled to operate. The condensation effect of the heat pump system is improved, and the energy efficiency of the system is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of heat pumps, and in particular to a control method for a heat pump system, a heat pump system, and a storage medium. Background Art

[0002] In addition to using the output energy to adjust the environment of the indoor space, a heat pump system can also be provided with an energy storage device to store energy to meet other usage requirements.

[0003] Currently, during the heat storage process of the energy storage device in the heat pump system, in addition to being dissipated into the energy storage device for storage, the heat in the system will also be dissipated to the space where the condenser is located through the condenser. However, when the coordination of these two heat dissipation processes is not good, it is likely to affect the condensation heat dissipation effect of the heat pump system and reduce the system energy efficiency. Summary of the Invention

[0004] The main purpose of the present invention is to provide a control method for a heat pump system, a heat pump system, and a storage medium, aiming to improve the condensation effect of the heat pump system and improve the system energy efficiency.

[0005] To achieve the above object, the present invention provides a control method for a heat pump system. The heat pump system includes an energy storage device, a compressor, a reversing component, an indoor heat exchanger, and an outdoor heat exchanger. The compressor, the energy storage device, the reversing component, the indoor heat exchanger, and the outdoor heat exchanger are sequentially connected to form a refrigerant circuit. The energy storage device is disposed between the exhaust port of the compressor and the reversing component. The heat pump system further includes a driving component corresponding to the outdoor heat exchanger and / or the indoor heat exchanger. The driving component is used to drive a fluid to exchange heat with the corresponding heat exchanger. The control method of the heat pump system includes the following steps:

[0006] When the energy storage device is in a heat storage state, obtain the first temperature of the refrigerant flowing out of the energy storage device;

[0007] Control the driving component corresponding to the condenser in the indoor heat exchanger and the outdoor heat exchanger to operate according to the first temperature. <(

[0008] Optionally, the step of controlling the driving component corresponding to the condenser in the indoor heat exchanger and the outdoor heat exchanger to operate according to the first temperature includes:

[0009] When the first temperature meets the first preset condition, control the driving component to close;

[0010] When the first temperature does not meet the first preset condition, control the driving component to turn on;

[0011] Among them, the first preset condition includes that the first temperature is less than the first preset temperature or the deviation value between the first temperature and the current ambient temperature of the environment where the heat pump system is located is not greater than the preset value.

[0012] Optionally, after the step of controlling the driving component to be turned on, the following steps are further included:

[0013] Obtain the second temperature of the refrigerant flowing out of the condenser;

[0014] Adjust the operating parameters of the driving component according to the second temperature.

[0015] Optionally, the step of adjusting the operating parameters of the driving component according to the second temperature includes:

[0016] Obtain the ambient temperature of the environment where the condenser is located, the current temperature of the energy storage medium in the energy storage device, and the continuous on-time of the driving component;

[0017] Obtain the target correspondence relationship between the second temperature and the adjustment parameter of the driving component according to the ambient temperature, the current temperature, and the continuous on-time;

[0018] Determine the target adjustment parameter corresponding to the second temperature based on the target correspondence relationship;

[0019] Adjust the operating parameters of the driving component according to the target adjustment parameter.

[0020] Optionally, after the step of controlling the driving component to be turned off, the following steps are further included:

[0021] Obtain the third temperature of the refrigerant flowing out of the energy storage device or the first medium temperature of the energy storage medium in the energy storage device;

[0022] When the third temperature is not greater than the second preset temperature, or when the temperature difference value between the set medium temperature of the energy storage device and the first medium temperature is not less than the first preset temperature difference, control the compressor to operate at an increased frequency;

[0023] Among them, the second preset temperature is greater than the first preset temperature.

[0024] Optionally, after the step of controlling the compressor to operate at an increased frequency, the following steps are further included:

[0025] Obtain the fourth temperature of the refrigerant flowing out of the energy storage device or the second medium temperature of the energy storage medium in the energy storage device;

[0026] When the fourth temperature is not less than the third preset temperature, or when the temperature difference value between the set medium temperature of the energy storage device and the second medium temperature is not greater than the second preset temperature difference, control the compressor to stop operating at an increased frequency;

[0027] Wherein, the third preset temperature is greater than the second preset temperature, and the second preset temperature difference is less than the first preset temperature difference.

[0028] Optionally, the heat pump system further includes a refrigerant regulating component and a refrigerant branch parallel to the energy storage device. The refrigerant regulating component is used to switch the refrigerant flow direction between the energy storage device and the refrigerant branch. Before the step of obtaining the first temperature of the refrigerant flowing out of the energy storage device when the energy storage device is in the heat storage state, the method further includes:

[0029] Obtaining the target operation mode of the heat pump system;

[0030] When the target operation mode is the first mode, controlling the refrigerant regulating component to operate in the first state so that the refrigerant discharged from the compressor flows through the energy storage device, and controlling the reversing component to operate in the third state so that the refrigerant flowing out of the energy storage device sequentially flows through the indoor heat exchanger, the outdoor heat exchanger and then flows into the compressor;

[0031] When the target operation mode is the second mode, controlling the refrigerant regulating component to operate in the first state so that the refrigerant discharged from the compressor flows through the energy storage device, and controlling the reversing component to operate in the fourth state so that the refrigerant flowing out of the energy storage device sequentially flows through the outdoor heat exchanger, the indoor heat exchanger and then flows into the compressor.

[0032] Optionally, after the step of obtaining the target operation mode of the heat pump system, the method further includes:

[0033] When the target operation mode is the third mode, controlling the refrigerant regulating component to operate in the second state so that the refrigerant discharged from the compressor flows through the refrigerant branch, and controlling the reversing component to operate in the third state so that the refrigerant flowing out of the refrigerant branch sequentially flows through the indoor heat exchanger, the outdoor heat exchanger and then flows into the compressor.

[0034] In addition, to achieve the above object, the present application further provides a heat pump system, which includes a control device, an energy storage device, a compressor, a reversing component, an indoor heat exchanger, and an outdoor heat exchanger. The compressor, the energy storage device, the reversing component, the indoor heat exchanger, and the outdoor heat exchanger are sequentially connected to form a refrigerant circuit. The energy storage device is disposed between the exhaust port of the compressor and the reversing component. The heat pump system further includes a driving component corresponding to the outdoor heat exchanger and / or the indoor heat exchanger. The driving component is used to drive a fluid to exchange heat with the corresponding heat exchanger;

[0035] The commutation component, the driving component, and the compressor are all connected to the control device, which includes: a memory, a processor, and a control program of the heat pump system stored on the memory and executable on the processor. When the control program of the heat pump system is executed by the processor, the steps of the control method of the heat pump system described in any one of the above are implemented.

[0036] In addition, to achieve the above object, the present application also proposes a storage medium on which a control program of the heat pump system is stored. When the control program of the heat pump system is executed by a processor, the steps of the control method of the heat pump system described in any one of the above are implemented.

[0037] A control method of a heat pump system proposed by the present invention. In this heat pump system, the heat discharged from the compressor can be stored in the energy storage device and then flow into the indoor heat exchanger or the outdoor heat exchanger for heat exchange. When the energy storage device is in the heat storage state, the temperature of the refrigerant flowing out of the energy storage device can accurately reflect the condensation heat dissipation effect of the energy storage device. Based on the temperature of the refrigerant flowing out of the energy storage device, the driving components corresponding to the condensers in the indoor heat exchanger and the outdoor heat exchanger are operated and regulated, so as to realize the regulation of the fluid volume exchanging heat with the condenser, ensure that the condensation heat dissipation process of the condenser can be coordinated with the condensation heat dissipation effect of the energy storage device, thereby improving the condensation effect of the heat pump system and the system energy efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic structural diagram of an embodiment of the heat pump system of the present invention and a schematic diagram of the refrigerant flow direction in the first mode;

[0039] Figure 2 It is a schematic structural diagram of an embodiment of the heat pump system of the present invention and a schematic diagram of the refrigerant flow direction in the second mode;

[0040] Figure 3 It is a schematic structural diagram of an embodiment of the heat pump system of the present invention and a schematic diagram of the refrigerant flow direction in the third mode;

[0041] Figure 4 It is a schematic diagram of the hardware structure involved in the operation of an embodiment of the heat pump system of the present invention;

[0042] Figure 5 It is a schematic flowchart of an embodiment of the control method of the heat pump system of the present invention;

[0043] Figure 6 It is a schematic flowchart of another embodiment of the control method of the heat pump system of the present invention;

[0044] Figure 7 It is a schematic flowchart of still another embodiment of the control method of the heat pump system of the present invention.

[0045] The realization, functional features and advantages of the present invention will be further described with reference to the embodiments and the accompanying drawings. Specific Embodiments

[0046] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0047] An embodiment of the present invention provides a heat pump system.

[0048] In the embodiment of the present invention, referring to Figures 1 to 4 , the heat pump system includes a control device 100, an energy storage device 200, a compressor 300, a reversing assembly 700, an indoor heat exchanger 400 and an outdoor heat exchanger 600. The return air ports of the indoor heat exchanger 400, the outdoor heat exchanger 600, the energy storage device 200 and the compressor 300 are all connected to the reversing assembly 700. The compressor 300, the reversing assembly 700, the indoor heat exchanger 400 and the outdoor heat exchanger 600 are sequentially connected to form a refrigerant circuit. The energy storage device 200 is arranged between the exhaust port of the compressor 300 and the reversing assembly 700. The heat pump system further includes a driving component corresponding to the indoor heat exchanger 400 and the outdoor heat exchanger 600, and the driving component is used to drive the corresponding heat exchanger to exchange heat with the fluid in the regulating space. Wherein, the compressor 300, the reversing assembly 700 and the driving component are all connected to the control device 100.

[0049] The energy storage device 200 is loaded with an energy storage medium (such as water, etc.), and the energy storage device 200 is also provided with a refrigerant pipeline for the refrigerant to flow through and is heat exchange connected to the energy storage medium. For example, the energy storage device 200 can be a water heater or the like for supplying domestic hot water.

[0050] In this embodiment, the heat pump system includes an indoor heat exchanger 400, a throttling device 500 and an outdoor heat exchanger 600 connected in sequence. In one implementation, the refrigerant discharged by the compressor 300 can flow through the indoor heat exchanger 400, the throttling device 500 and the outdoor heat exchanger 600 in sequence and then return to the compressor 300. During this process, the indoor heat exchanger 400 is in a condensation state; in another implementation, the refrigerant discharged by the compressor 300 can also flow through the outdoor heat exchanger 600, the throttling device 500 and the indoor heat exchanger 400 in sequence and then return to the compressor 300. During this process, the outdoor heat exchanger 600 is in a condensation state. In other embodiments, the heat pump system may also include more than two heat exchangers, for example, including a first indoor heat exchanger, a first throttling device, a second indoor heat exchanger, a second throttling device and an outdoor heat exchanger 600 connected in sequence.

[0051] The reversing assembly 700 can be used to switch the connection states of the indoor heat exchanger 400 and the outdoor heat exchanger 600 with the compressor 300, so as to switch the refrigerant flow direction in the refrigerant circuit. In this embodiment, the reversing assembly 700 is a four-way valve. In other embodiments, the reversing assembly 700 can also be a valve body combination with the same refrigerant regulation function.

[0052] The operating states of the reversing assembly 700 include a third state and a fourth state.

[0053] When the reversing assembly 700 operates in the third state, the pipeline between the exhaust port of the compressor 300 and the reversing assembly 700 is communicated with the indoor heat exchanger 400, the suction port of the compressor 300 is communicated with the outdoor heat exchanger, the refrigerant discharged by the compressor 300 flows through the indoor heat exchanger 400, the throttling device 500, and the outdoor heat exchanger 600 in sequence and then returns to the compressor 300. The indoor heat exchanger 400 is in a condensation state, and the outdoor heat exchanger 600 is in an evaporation state.

[0054] When the reversing assembly 700 operates in the fourth state, the pipeline between the discharge port of the compressor 300 and the reversing assembly 700 is communicated with the outdoor heat exchanger 600, the suction port of the compressor 300 is communicated with the indoor heat exchanger 400, the refrigerant discharged by the compressor 300 flows through the outdoor heat exchanger 600, the throttling device 500, and the indoor heat exchanger 400 in sequence and then returns to the compressor 300. The indoor heat exchanger 400 is in an evaporation state, and the outdoor heat exchanger 600 is in a condensation state.

[0055] The high-temperature refrigerant discharged by the compressor 300 can flow through the energy storage device 200 and then flow into the indoor heat exchanger 400 or the outdoor heat exchanger 600. After the high-temperature refrigerant flows through the energy storage device 200, the heat can be stored in the energy storage medium of the energy storage device 200.

[0056] When the driving component is turned on, it drives the fluid in its space to exchange heat with the corresponding heat exchanger. When the driving component is turned off, the fluid in its space stops exchanging heat with the corresponding heat exchanger. The driving component can include a fan or a water pump, and is specifically set according to the type of the corresponding heat exchanger. Among them, the driving component corresponding to the air-cooled heat exchanger is a fan. When the fan is turned on, it can drive the air in the space where the heat exchanger is located to exchange heat with the heat exchanger; the driving component corresponding to the liquid-cooled heat exchanger is a liquid pump. When the liquid pump is turned on, it can drive the liquid in the space where the heat exchanger is located to exchange heat with the heat exchanger. The driving components corresponding to different heat exchangers can be the same or different.

[0057] In this embodiment, the indoor heat exchanger 400 is an air-cooled heat exchanger or a water-cooled heat exchanger. The outdoor heat exchanger 600 is an air-cooled heat exchanger.

[0058] Further, in this embodiment, with reference to Figures 1 to 3, the heat pump system further includes a refrigerant regulating assembly 800 and a refrigerant branch in parallel with the energy storage device 200, and the refrigerant regulating assembly 800 is used to switch the refrigerant flow direction between the energy storage device 200 and the refrigerant branch.

[0059] The operating state of the refrigerant regulating assembly 800 has a first state and a second state. When the refrigerant regulating assembly 800 operates in the first state, the refrigerant discharged from the compressor 300 flows through the energy storage device 200 and stops flowing through the refrigerant branch. When the refrigerant regulating assembly 800 operates in the second state, the refrigerant discharged from the compressor 300 flows through the refrigerant branch and stops flowing through the energy storage device 200. Among them, when the refrigerant flows through the energy storage device 200, the energy storage device 200 is in a heat storage state, and when the refrigerant stops flowing through the energy storage device 200, the energy storage device 200 is in a state of stopping energy storage.

[0060] In one implementation manner of this embodiment, the refrigerant regulating assembly 800 includes a first control valve 801 connected in series with the energy storage device 200 and a second control valve 802 provided in the refrigerant branch. The first state includes the first control valve 801 being opened and the second control valve 802 being closed, and the second state includes the first control valve 801 being closed and the second control valve 802 being opened.

[0061] In another implementation manner of this embodiment, the refrigerant regulating assembly 800 includes a three-way valve. The energy storage device 200, the refrigerant branch, and the exhaust port of the compressor 300 are sequentially connected to the first valve port, the second valve port, and the third valve port of the four-way valve. The first state includes the three-way valve operating in the first valve position to connect the first valve port and the third valve port, and the second state includes the three-way valve operating in the second valve position to connect the second valve port and the third valve port.

[0062] Based on the operation cooperation between the refrigerant regulating assembly 800 and the commutation assembly 700, the operation modes of the heat pump system include but are not limited to the following several modes:

[0063] The first mode, referring to Figure 1 , the refrigerant regulating assembly 800 operates in the first state, the commutation assembly 700 operates in the third state, the refrigerant discharged from the compressor 300 sequentially flows through the energy storage device 200, the commutation assembly 700, the indoor heat exchanger 400, the throttling device 500, the outdoor heat exchanger 600, the commutation assembly 700 and then returns to the compressor 300. The indoor heat exchanger 400 is in a condensation state, the outdoor heat exchanger 600 is in an evaporation state, the energy storage device 200 is in a heat storage state, and the heat pump system can realize heat storage while heating the indoor environment.

[0064] The second mode, referring to Figure 2, the refrigerant regulation assembly 800 operates in the first state, and the commutation assembly 700 operates in the fourth state. The refrigerant discharged from the compressor 300 sequentially flows through the energy storage device 200, the commutation assembly 700, the outdoor heat exchanger 600, the throttling device 500, the indoor heat exchanger 400, and the commutation assembly 700 and then returns to the compressor 300. The indoor heat exchanger 400 is in the evaporation state, the outdoor heat exchanger 600 is in the condensation state, and the energy storage device 200 is in the heat storage state. The heat pump system can realize heat storage while cooling the indoor environment. In the second mode, the heat absorbed by the indoor heat exchanger 400 from its space can be stored in the energy storage device 200 to achieve heat recovery.

[0065] The third mode, referring to Figure 3 , the refrigerant regulation assembly 800 operates in the second state, and the commutation assembly 700 operates in the third state. The refrigerant discharged from the compressor 300 does not flow through the energy storage device 200 but directly flows into the commutation assembly 700, and then sequentially flows through the indoor heat exchanger 400, the throttling device 500, the outdoor heat exchanger 600, and the commutation assembly 700 and then returns to the compressor 300. The indoor heat exchanger 400 is in the condensation state, the outdoor heat exchanger 600 is in the evaporation state, and the energy storage device 200 is in the state of stopping heat storage. The heat pump system can realize independent heating of the indoor environment.

[0066] The fourth mode, the refrigerant regulation assembly 800 operates in the second state, and the commutation assembly 700 operates in the fourth state. The refrigerant discharged from the compressor 300 does not flow through the energy storage device 200 but directly flows into the commutation assembly 700, and then sequentially flows through the outdoor heat exchanger 600, the throttling device 500, the indoor heat exchanger 400, and the commutation assembly 700 and then returns to the compressor 300. The indoor heat exchanger 400 is in the evaporation state, the outdoor heat exchanger 600 is in the condensation state, and the energy storage device 200 is in the state of stopping heat storage. The heat pump system can realize independent cooling of the indoor environment.

[0067] Furthermore, in one embodiment, referring to Figure 4 , the heat pump system further includes a first temperature sensor 01 connected to the control device 100. The first temperature sensor 01 is arranged at the refrigerant outlet of the energy storage device 200 to detect the temperature of the refrigerant flowing out of the energy storage device 200.

[0068] Furthermore, in one embodiment, referring to Figure 4 , the heat pump system further includes a second temperature sensor 02 connected to the control device 100. The second temperature sensor 02 is arranged inside the energy storage device 200 and in contact with the energy storage medium to detect the temperature of the energy storage medium in the energy storage device 200.

[0069] Furthermore, in one embodiment, referring to Figure 4, the heat pump system further includes a third temperature sensor 03 connected to the control device 100. The third temperature sensor 03 is disposed at the refrigerant outlet of the heat exchanger to detect the temperature of the refrigerant flowing out of the heat exchanger.

[0070] In the embodiment of the present invention, referring to Figure 4 , the control device 100 of the heat pump system includes: a processor 1001, such as a CPU, a memory 1002, and a timer 1003. Among them, these components are connected and communicate with each other through a communication bus. The memory 1002 can be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory. Optionally, the memory 1002 can also be a storage device independent of the aforementioned processor 1001.

[0071] Those skilled in the art can understand that Figure 4 the device structure shown in

[0072] does not constitute a limitation on the device, and may include more or fewer components than shown in the figure, or combine certain components, or have different component arrangements. Figure 4 As shown in

[0073] In Figure 4 the device shown, the processor 1001 can be used to call the control program of the heat pump system stored in the memory 1002 and execute the relevant step operations of the control method of the heat pump system in the following embodiments.

[0074] The embodiment of the present invention also provides a control method for a heat pump system, which is applied to the above heat pump system.

[0075] Referring to Figure 5 , an embodiment of the control method of the heat pump system of the present application is proposed. In this embodiment, the control method of the heat pump system includes:

[0076] Step S10, when the energy storage device is in the heat storage state, obtain the first temperature of the refrigerant flowing out of the energy storage device;

[0077] In one implementation, when the heat pump system includes the above-mentioned refrigerant branch and refrigerant adjustment component, when the compressor is turned on and the refrigerant adjustment component operates in the first state, the refrigerant discharged by the compressor flows through the energy storage device, and the energy storage device is in the heat storage state.

[0078] In another implementation, when the heat pump system does not have the above-mentioned refrigerant branch, when the compressor is turned on, the refrigerant discharged by the compressor flows through the energy storage device, and the energy storage device is in the heat storage state.

[0079] Obtain the temperature data currently detected by the above-mentioned first temperature sensor to determine the first temperature. Specifically, the first temperature can be detected at intervals of a set duration or in real time.

[0080] Step S20, control the driving component corresponding to the condenser in the indoor heat exchanger and the outdoor heat exchanger to operate according to the first temperature.

[0081] The heat exchanger in the indoor heat exchanger and the outdoor heat exchanger in the condensing state is the condenser here.

[0082] Determine the operation control parameters of the driving component according to the first temperature, and control the driving component corresponding to the condenser to operate according to the operation control parameters. The operation control parameters here include, but are not limited to, one of the following parameters: turn on the driving component, turn off the driving component, increase the operation parameters of the driving component, and decrease the operation parameters of the driving component.

[0083] In one implementation manner of this embodiment, determine the operation control parameters of the driving component according to the temperature range where the first temperature is located. In another implementation manner of this embodiment, the operation control parameters of the driving component can also be determined according to the relationship value (such as the temperature difference value or the ratio, etc.) between the first temperature and the preset temperature.

[0084] A control method for a heat pump system proposed in an embodiment of the present invention is based on the above-mentioned heat pump system. When the energy storage device is in the heat storage state, the temperature of the refrigerant flowing out of the energy storage device can accurately reflect the condensation heat dissipation effect of the energy storage device. Based on the temperature of the refrigerant flowing out of the energy storage device, the driving components corresponding to the condensers in the indoor heat exchanger and the outdoor heat exchanger are regulated to operate, so as to realize the regulation of the fluid volume exchanging heat with the condenser, ensure that the condensation heat dissipation process of the condenser can be coordinated with the condensation heat dissipation effect of the energy storage device, thereby improving the condensation effect of the heat pump system and improving the system energy efficiency.

[0085] Further, in this embodiment, before the step of obtaining the first temperature of the refrigerant flowing out of the energy storage device when the energy storage device is in the heat storage state, it further includes: obtaining the target operation mode of the heat pump system; when the target operation mode is the first mode, control the refrigerant regulating component to operate in the first state so that the refrigerant discharged from the compressor flows through the energy storage device, and control the reversing component to operate in the third state so that the refrigerant flowing out of the energy storage device flows through the indoor heat exchanger, the outdoor heat exchanger in sequence and then flows into the compressor; when the target operation mode is the second mode, control the refrigerant regulating component to operate in the first state so that the refrigerant discharged from the compressor flows through the energy storage device, and control the reversing component to operate in the fourth state so that the refrigerant flowing out of the energy storage device flows through the outdoor heat exchanger, the indoor heat exchanger in sequence and then flows into the compressor.

[0086] The target operating mode here can be determined by obtaining user instructions or by monitoring the current operating state parameters of the heat pump system.

[0087] In the first mode, the refrigerant discharged from the compressor flows through the energy storage device, the commutation component, the indoor heat exchanger, the throttling device, the outdoor heat exchanger, and the commutation component in sequence and then returns to the compressor. The indoor heat exchanger is in the condensation state, the outdoor heat exchanger is in the evaporation state, and the energy storage device is in the heat storage state. The heat pump system can realize heat storage while heating the indoor environment.

[0088] In the second mode, the refrigerant discharged from the compressor flows through the energy storage device, the commutation component, the outdoor heat exchanger, the throttling device, the indoor heat exchanger, and the commutation component in sequence and then returns to the compressor. The indoor heat exchanger is in the evaporation state, the outdoor heat exchanger is in the condensation state, and the energy storage device is in the heat storage state. The heat pump system can realize heat storage while cooling the indoor environment. In the second mode, the heat absorbed by the indoor heat exchanger from its space can be stored in the energy storage device to realize heat recovery.

[0089] In this embodiment, when the heat pump system operates in the above first mode or second mode, the energy storage device is in the heat storage state. Based on the above method, the heat pump system is controlled, so as to effectively ensure that the operation of the heat pump system can effectively balance indoor heat exchange and heat storage of the energy storage device, improve the overall condensation effect of the system and improve the system energy efficiency.

[0090] Further, in this embodiment, after the step of obtaining the target operating mode of the heat pump system, it further includes: when the target operating mode is the third mode, controlling the refrigerant regulating component to operate in the second state so that the refrigerant discharged from the compressor flows through the refrigerant branch, and controlling the commutation component to operate in the third state so that the refrigerant flowing out of the refrigerant branch flows through the indoor heat exchanger and the outdoor heat exchanger in sequence and then flows into the compressor.

[0091] In the third mode, the refrigerant discharged from the compressor does not flow through the energy storage device but directly flows through the refrigerant branch into the commutation component. The refrigerant flowing out of the refrigerant branch flows through the indoor heat exchanger, the throttling device, the outdoor heat exchanger, and the commutation component in sequence and then returns to the compressor. The indoor heat exchanger is in the condensation state, the outdoor heat exchanger is in the evaporation state, and the energy storage device is in the stopped heat storage state. The heat pump system can realize independent heating of the indoor environment.

[0092] In the third mode, the driving components corresponding to each heat exchanger remain in the on state.

[0093] In this embodiment, through the cooperation of the refrigerant regulating component and the commutation component, the heat pump system can realize independent heating of the indoor environment and improve the heating effect.

[0094] Further, based on the above embodiments, another embodiment of the control method of the heat pump system of the present application is proposed. In this embodiment, referring to Figure 6 , the step S20 includes:

[0095] Step S21, when the first temperature meets the first preset condition, control the driving component to turn off;

[0096] Step S22, when the first temperature does not meet the first preset condition, control the driving component to turn on;

[0097] Wherein, the first preset condition includes that the first temperature is less than the first preset temperature or the deviation value between the first temperature and the current ambient temperature of the environment where the heat pump system is located is not greater than the preset value.

[0098] The first preset condition is the condition that the first temperature needs to meet when the condensation heat dissipation effect of the refrigerant in the energy storage device reaches a better state.

[0099] The first preset temperature or the preset value can be a fixed parameter set in advance (such as 32 °C, etc.), or a parameter obtained according to the actual operating state of the heat pump system. For example, the first preset temperature or the preset value here can be determined according to the set temperature of the energy storage device, the ambient temperature of the space where the energy storage device is located, and the current water inlet and outlet rate of the energy storage device. Among them, different operating modes of the heat pump system can correspond to different first preset temperatures or preset values.

[0100] When the driving component is a fan, when the first temperature meets the first preset condition, control the fan to turn off; when the first temperature does not meet the first preset condition, control the fan to turn on.

[0101] When the driving component is a liquid pump, when the first temperature meets the first preset condition, control the liquid pump to turn off; when the first temperature does not meet the first preset condition, control the liquid pump to turn on.

[0102] In this embodiment, when the heat pump system enters the first mode, the refrigerant regulating component and the commutation component are regulated in the manner mentioned above. At this time, the energy storage device is in the heat storage state, and the first temperature is monitored. When the first temperature is lower than the first preset temperature, the condensation and heat dissipation effect of the refrigerant in the energy storage device is better at this time. The fan or water pump corresponding to the indoor heat exchanger can be controlled to turn off. At this time, the energy storage device maintains the heat storage state, and the indoor heat exchanger stops heating the room. All the heat in the system is efficiently condensed and dissipated in the energy storage device, so as to ensure that the condensation effect of the system is in a better state, and at the same time, it is avoided that the indoor comfort is reduced by using the refrigerant with too low temperature to exchange heat with the indoor environment (such as blowing cold air, etc.). When the first temperature is not lower than the first preset temperature, the condensation and heat dissipation effect of the refrigerant in the energy storage device is poor at this time. The fan or water pump corresponding to the indoor heat exchanger can be controlled to turn on, and heat is dissipated by condensing through the energy storage device and the condenser at the same time, ensuring that the system has enough heat for condensation and dissipation, effectively improving the condensation and heat dissipation effect of the heat pump system. At the same time, only the refrigerant with a high enough temperature will exchange heat with the indoor fluid, thus effectively improving the heating comfort.

[0103] In this embodiment, when the heat pump system enters the second mode, the refrigerant regulating group and the commutation component are regulated in the manner mentioned above. At this time, the energy storage device is in the heat storage state, and the first temperature is monitored. When the deviation value between the first temperature and the current ambient temperature of the environment where the heat pump system is located is not greater than the preset value, it indicates that the temperature of the medium in the energy storage device is relatively low at this time, and the condensation and heat dissipation effect of the refrigerant in the energy storage device is better. The fan corresponding to the outdoor heat exchanger can be controlled to turn off. At this time, the energy storage device maintains the heat storage state, and the outdoor heat exchanger stops dissipating heat to the environment. All the heat in the system is efficiently condensed and dissipated in the energy storage device, so as to ensure that the condensation effect of the system is in a better state, and at the same time, it is avoided that too much heat loss of the system reduces the energy efficiency of the system, thus effectively improving the condensation and heat dissipation effect of the system and the energy efficiency of the system. When the deviation value between the first temperature and the current ambient temperature of the environment where the heat pump system is located is greater than the preset value, it indicates that the temperature of the medium in the energy storage device is relatively high at this time, and the condensation and heat dissipation effect of the refrigerant in the energy storage device is poor at this time. The fan corresponding to the outdoor heat exchanger can be controlled to turn on, and heat is dissipated by condensing through the energy storage device and the condenser at the same time, ensuring that the system has enough heat for condensation and dissipation, effectively improving the condensation and heat dissipation effect of the heat pump system, and at the same time, avoiding the system having too much heat, thus effectively improving the refrigeration comfort.

[0104] In other embodiments, when the first temperature meets the first preset condition, the driving component can be controlled to reduce the operating power; when the first temperature does not meet the first preset condition, the driving component can be controlled to maintain the current operating power or increase the operating power.

[0105] In other embodiments, the first preset condition in the first mode of the heat pump system may also include that the deviation value between the first temperature and the current ambient temperature of the environment where the heat pump system is located is not greater than a preset value, and the first preset condition in the second mode of the heat pump system may also include that the first temperature is less than the first preset temperature.

[0106] Further, in this embodiment, after the step of controlling the driving component to be turned on, the method further includes: obtaining a second temperature of the refrigerant flowing out of the condenser; adjusting an operating parameter of the driving component according to the second temperature.

[0107] Detect the second temperature here when the driving component is in the on state.

[0108] The corresponding relationship between the second temperature and the adjustment parameter of the driving component may be preset, and may include forms such as calculation formulas, mapping relationships, etc. Based on this corresponding relationship, the corresponding relationship between the second temperature and the adjustment parameter can be determined, and the operating parameter of the driving component can be adjusted according to the adjustment parameter.

[0109] Determine the adjustment parameter of the driving component according to the relationship value or magnitude relationship between the second temperature and the preset refrigerant temperature. The preset refrigerant temperature is the target temperature required for the condenser to be in a better condensation and heat dissipation state in the current environment. The preset refrigerant temperature may be a preset fixed value, or a value determined according to the actual state parameters of the energy storage device. For example, the preset refrigerant temperature here is determined according to the temperature of the refrigerant flowing into the energy storage device currently, the temperature of the refrigerant flowing out of the energy storage device currently, and the current medium temperature in the energy storage device, so as to further ensure that the condensation and heat dissipation effect of the system can reach the best state when the condenser and the energy storage device condense and dissipate heat simultaneously.

[0110] For example, in the above second mode, when the driving component is a fan, if the second temperature is greater than the preset refrigerant temperature, the fan speed can be controlled to increase; if the second temperature is less than the preset refrigerant temperature, the fan speed can be controlled to decrease. Or, when the temperature difference value between the second temperature and the preset refrigerant temperature is not greater than a set value, the fan speed can be controlled to decrease; when the temperature difference value between the second temperature and the preset refrigerant temperature is greater than the set value, the fan speed can be controlled to increase.

[0111] In this embodiment, adjusting the operating parameter of the driving component according to the temperature of the refrigerant flowing out of the condenser is beneficial to improving the condensation and heat dissipation effect of the condenser, thereby improving the overall condensation and heat dissipation effect of the system.

[0112] Further, in this embodiment, the step of adjusting the operating parameters of the driving component according to the second temperature includes: obtaining the ambient temperature of the environment where the condenser is located, the current temperature of the energy storage medium in the energy storage device, and the continuous on-time of the driving component; obtaining the target correspondence between the second temperature and the adjustment parameters of the driving component according to the ambient temperature, the current temperature, and the continuous on-time; determining the target adjustment parameter corresponding to the second temperature based on the target correspondence; and adjusting the operating parameters of the driving component according to the target adjustment parameter.

[0113] Different combinations of ambient temperature, current temperature, and continuous on-time result in different target correspondences.

[0114] The target correspondence can include forms such as mapping relationships, calculation formulas, etc.

[0115] When the target correspondence is a preset formula, the second temperature can be substituted into the preset formula to calculate the adjustment parameter.

[0116] When the target correspondence is a preset mapping relationship, the parameter mapped by the second temperature in the preset mapping relationship can be used as the adjustment parameter.

[0117] In this embodiment, the ambient temperature, the current temperature, and the continuous on-time can accurately characterize the overall condensation heat dissipation effect of the system when the condenser and the energy storage device condense simultaneously. Based on this, determining the target correspondence for regulating the driving component by combining these parameters is beneficial to ensuring that the condensation effects of the condenser and the energy storage device can be coordinated after the fan is turned on, and effectively improving the overall condensation heat dissipation effect of the system.

[0118] Further, based on any of the above embodiments, another embodiment of the control method of the heat pump system of the present application is proposed. In this embodiment, referring to Figure 7 , after the step of controlling the driving component to turn off, the following steps are further included:

[0119] Step S211, obtaining the third temperature of the refrigerant flowing out of the energy storage device or the first medium temperature of the energy storage medium in the energy storage device;

[0120] In this embodiment, when the heat pump system is in the above first mode, the condenser is the indoor heat exchanger, and step S211 is executed at this time.

[0121] Detect the third temperature or the first medium temperature here when the driving component is in the off state.

[0122] Step S212, when the third temperature is not greater than the second preset temperature, or when the temperature difference between the set medium temperature of the energy storage device and the first medium temperature is not less than the first preset temperature difference, control the compressor to increase the frequency of operation; wherein, the second preset temperature is lower than the first preset temperature.

[0123] The set medium temperature is a preset target temperature that the energy storage medium in the energy storage device needs to reach.

[0124] The second preset temperature is specifically a preset minimum temperature allowed for the refrigerant outlet temperature to reach when the heat storage efficiency of the energy storage device is poor. When the third temperature is not greater than the second preset temperature, it indicates that the heat storage efficiency of the energy storage device is poor.

[0125] In this embodiment, the compressor is controlled to operate at an increasing frequency at a rate greater than a preset rate.

[0126] In this embodiment, after the driving component is turned off, when the third temperature or the first medium temperature is too low, it indicates that the system output capacity is low, the energy efficiency is poor, and the indoor heating effect is not good. At this time, the compressor is operated at a higher frequency to rapidly increase the temperature in the energy storage device and the inlet temperature of the indoor heat exchanger in the condensing state, thereby effectively improving the system energy efficiency while ensuring the indoor heating effect after the driving component is turned on.

[0127] Furthermore, in this embodiment, after step S212, the step further includes: obtaining a fourth temperature of the refrigerant flowing out of the energy storage device or a second medium temperature of the energy storage medium in the energy storage device; when the fourth temperature is not less than a third preset temperature, or when the temperature difference between the set medium temperature of the energy storage device and the second medium temperature is not greater than a second preset temperature difference, controlling the compressor to stop the frequency increase operation; wherein the third preset temperature is greater than the second preset temperature, and the second preset temperature difference is less than the first preset temperature difference.

[0128] In this embodiment, after the compressor frequency is increased, when the fourth temperature or the second medium temperature rises to a higher temperature, it indicates that the system output capacity is good and the indoor heating effect is better. At this time, the compressor frequency is stopped from being increased, thereby effectively improving the system energy efficiency while ensuring the indoor heating effect after the driving component is turned on.

[0129] In addition, an embodiment of the present invention further provides a storage medium storing a control program of a heat pump system. When the control program of the heat pump system is executed by a processor, the relevant steps of any embodiment of the control method of the heat pump system are implemented.

[0130] It should be noted that in this article, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method, article or system. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or system including such an element.

[0131] The serial numbers of the above embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0132] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-described embodiment methods can be implemented by means of software plus a necessary general hardware platform. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. The computer software product is stored in a storage medium as described above (such as ROM / RAM, magnetic disk, optical disk), and includes several instructions for causing a terminal device (which can be a mobile phone, computer, server, heat pump system, or network device, etc.) to execute the methods described in various embodiments of the present invention.

[0133] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural or equivalent process transformation made by using the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A control method for a heat pump system, characterized in that, The heat pump system includes an energy storage device, a compressor, a reversing component, an indoor heat exchanger, and an outdoor heat exchanger. The compressor, the energy storage device, the reversing component, the indoor heat exchanger, and the outdoor heat exchanger are sequentially connected to form a refrigerant circuit. The energy storage device is disposed between the exhaust port of the compressor and the reversing component. The heat pump system further includes a driving component corresponding to the outdoor heat exchanger and / or the indoor heat exchanger. The driving component is used to drive a fluid to exchange heat with the corresponding heat exchanger. The control method of the heat pump system includes the following steps: When the energy storage device is in a heat storage state, obtain a first temperature of the refrigerant flowing out of the energy storage device; Control the driving component corresponding to the condenser in the indoor heat exchanger and the outdoor heat exchanger to operate according to the first temperature.

2. The control method of the heat pump system according to claim 1, wherein The step of controlling the driving component corresponding to the condenser in the indoor heat exchanger and the outdoor heat exchanger to operate according to the first temperature includes: When the first temperature meets a first preset condition, control the driving component to close; When the first temperature does not meet the first preset condition, control the driving component to turn on; Wherein, the first preset condition includes that the first temperature is less than a first preset temperature or the deviation value between the first temperature and the current ambient temperature of the environment where the heat pump system is located is not greater than a preset value.

3. The control method of the heat pump system according to claim 2, characterized in that, After the step of controlling the driving component to turn on, it further includes: Obtain a second temperature of the refrigerant flowing out of the condenser; Adjust the operating parameters of the driving component according to the second temperature.

4. The control method of the heat pump system according to claim 3, characterized in that, The step of adjusting the operating parameters of the driving component according to the second temperature includes: Obtain the ambient temperature of the environment where the condenser is located, the current temperature of the energy storage medium in the energy storage device, and the continuous on-time of the driving component; Obtain a target correspondence relationship between the second temperature and the adjustment parameter of the driving component according to the ambient temperature, the current temperature, and the continuous on-time; Determine the target adjustment parameter corresponding to the second temperature based on the target correspondence relationship; Adjust the operating parameters of the driving component according to the target adjustment parameter.

5. The control method of the heat pump system according to claim 2, characterized in that, After the step of controlling the driving component to close, it further includes: Obtain a third temperature of the refrigerant flowing out of the energy storage device or a first medium temperature of the energy storage medium in the energy storage device; When the third temperature is not greater than a second preset temperature, or when the temperature difference value between the set medium temperature of the energy storage device and the first medium temperature is not less than a first preset temperature difference, control the compressor to operate at an increased frequency; Wherein, the second preset temperature is greater than the first preset temperature.

6. The control method of the heat pump system according to claim 5, characterized in that, After the step of controlling the compressor to operate at an increased frequency, it further includes: Obtain a fourth temperature of the refrigerant flowing out of the energy storage device or a second medium temperature of the energy storage medium in the energy storage device; When the fourth temperature is not less than a third preset temperature, or when the temperature difference value between the set medium temperature of the energy storage device and the second medium temperature is not greater than a second preset temperature difference, control the compressor to stop operating at an increased frequency; Wherein, the third preset temperature is greater than the second preset temperature, and the second preset temperature difference is less than the first preset temperature difference.

7. The control method of the heat pump system according to any one of claims 1 to 6, characterized in that The heat pump system further includes a refrigerant regulating component and a refrigerant branch parallel to the energy storage device. The refrigerant regulating component is configured to switch the refrigerant flow direction between the energy storage device and the refrigerant branch. Before the step of obtaining the first temperature of the refrigerant flowing out of the energy storage device when the energy storage device is in the heat storage state, the method further includes: Obtaining a target operation mode of the heat pump system; When the target operation mode is the first mode, controlling the refrigerant regulating component to operate in a first state so that the refrigerant discharged from the compressor flows through the energy storage device, and controlling the reversing component to operate in a third state so that the refrigerant flowing out of the energy storage device sequentially flows through the indoor heat exchanger, the outdoor heat exchanger, and then flows into the compressor; When the target operation mode is the second mode, controlling the refrigerant regulating component to operate in a first state so that the refrigerant discharged from the compressor flows through the energy storage device, and controlling the reversing component to operate in a fourth state so that the refrigerant flowing out of the energy storage device sequentially flows through the outdoor heat exchanger, the indoor heat exchanger, and then flows into the compressor.

8. The control method of the heat pump system according to claim 7, characterized in that, After the step of obtaining the target operation mode of the heat pump system, the method further includes: When the target operation mode is the third mode, controlling the refrigerant regulating component to operate in a second state so that the refrigerant discharged from the compressor flows through the refrigerant branch, and controlling the reversing component to operate in the third state so that the refrigerant flowing out of the refrigerant branch sequentially flows through the indoor heat exchanger, the outdoor heat exchanger, and then flows into the compressor.

9. A heat pump system, characterized in that, The heat pump system includes a control device, an energy storage device, a compressor, a reversing component, an indoor heat exchanger, and an outdoor heat exchanger. The compressor, the energy storage device, the reversing component, the indoor heat exchanger, and the outdoor heat exchanger are sequentially connected to form a refrigerant circuit. The energy storage device is disposed between the exhaust port of the compressor and the reversing component. The heat pump system further includes a driving component corresponding to the outdoor heat exchanger and / or the indoor heat exchanger. The driving component is configured to drive a fluid to exchange heat with the corresponding heat exchanger; The reversing component, the driving component, and the compressor are all connected to the control device. The control device includes: a memory, a processor, and a control program of the heat pump system stored on the memory and executable on the processor. When the control program of the heat pump system is executed by the processor, the steps of the control method of the heat pump system according to any one of claims 1 to 8 are implemented.

10. The heat pump system according to claim 9, characterized in that, The heat pump system further includes a refrigerant regulating component and a refrigerant branch parallel to the energy storage device. The refrigerant regulating component is configured to switch the refrigerant flow direction between the energy storage device and the refrigerant branch.

11. A storage medium, characterized in that, A control program of the heat pump system is stored on the storage medium. When the control program of the heat pump system is executed by a processor, the steps of the control method of the heat pump system according to any one of claims 1 to 8 are implemented.

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