Heat pump system, control method of heat pump system, electric appliance and storage medium

Abstract

The invention discloses a heat pump system, a control method of the heat pump system, an electric appliance and a storage medium, and relates to the technical field of electric appliances, the heat pump system comprises a refrigerant circulation loop, and the refrigerant circulation loop comprises a first heat exchanger, a first throttling device, a refrigerant heat dissipation module and a second heat exchanger which are connected in sequence; the refrigerant heat dissipation module is arranged to dissipate heat with a heating component; the first throttling device comprises a refrigerant switching assembly, a throttling branch and a bypass branch, the throttling branch and the bypass branch are both connected with the refrigerant switching assembly, and the refrigerant switching assembly is arranged to switch the refrigerant flow direction between the throttling branch and the bypass branch. The refrigerant switching assembly is arranged to control a refrigerant to flow through the bypass branch when the heating component has the condensation risk and control the refrigerant to flow through the throttling branch when the heating component does not have the condensation risk. The invention aims to reduce the condensation risk of the heating component and improve the operation reliability of the system.

Description

Technical Field

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

[0002] Many heat pump systems incorporate a refrigerant cooling module in the refrigerant flow path to dissipate heat from components such as the electronic control unit. However, if this module has a throttling device at its inlet, and the refrigerant temperature after throttling is too low, condensation can easily occur on the heat-generating components, affecting the system's operational reliability. Summary of the Invention

[0003] The main objective of this application is to provide a heat pump system, a control method for the heat pump system, electrical components, and a storage medium, which aims to reduce the risk of condensation on the heating components and improve the reliability of system operation.

[0004] To achieve the above objectives, this application proposes a heat pump system, which includes a refrigerant circulation loop. The refrigerant circulation loop includes a first heat exchanger, a first throttling device, a refrigerant heat dissipation module, and a second heat exchanger connected in sequence. The refrigerant heat dissipation module is configured to dissipate heat from the heat-generating components.

[0005] The first throttling device includes a refrigerant switching component, a throttling branch, and a bypass branch. Both the throttling branch and the bypass branch are connected to the refrigerant switching component. The refrigerant switching component is configured to switch the refrigerant flow direction between the throttling branch and the bypass branch.

[0006] The refrigerant switching component is configured to control the refrigerant flow through the bypass branch when the heating element has a risk of condensation, and to control the refrigerant flow through the throttling branch when the heating element does not have a risk of condensation.

[0007] In one embodiment, the refrigerant switching assembly includes a three-way valve;

[0008] The first heat exchanger, the first end of the throttling branch and the first end of the bypass branch are respectively connected to different valve ports of the three-way valve, and the second end of the throttling branch and the second end of the bypass branch are both connected to the refrigerant heat dissipation module.

[0009] In one embodiment, a throttling component with a fixed throttling area is provided on the throttling branch.

[0010] Furthermore, to achieve the above objectives, this application also proposes a control method for a heat pump system, applied to the heat pump system described in any of the preceding claims, the method comprising:

[0011] Obtain status parameters that indicate the condensation risk of the heating element;

[0012] When the state parameters meet the preset conditions, the refrigerant switching component is controlled to operate so that the refrigerant flows through the bypass branch;

[0013] If the state parameters do not meet the preset conditions, control the refrigerant switching component to operate so that the refrigerant flows through the throttling branch;

[0014] The preset condition indicates that the heating element is at risk of condensation.

[0015] In one embodiment, before the step of obtaining the state parameter representing the condensation risk of the heating component, the method further includes: controlling the heat pump system to operate in a preset mode, wherein the first heat exchanger is in a condensation state and the second heat exchanger is in an evaporation state;

[0016] The status parameters include the first ambient temperature of the environment where the heat pump system is located and the first refrigerant temperature into which the refrigerant flows into the refrigerant heat dissipation module. The preset conditions include a first temperature difference between the first ambient temperature and the first refrigerant temperature that is greater than a first preset temperature difference.

[0017] In one embodiment, applied to the heat pump system described above, the step of controlling the operation of the refrigerant switching assembly to cause refrigerant to flow through the bypass branch includes:

[0018] The three-way valve is controlled to operate in the second valve position so that the first heat exchanger, the bypass branch and the refrigerant heat dissipation module are connected in sequence.

[0019] The step of controlling the operation of the refrigerant switching component to make the refrigerant flow through the throttling branch includes:

[0020] The three-way valve is controlled to operate in the first valve position so that the first heat exchanger, the throttling branch, and the refrigerant heat dissipation module are connected in sequence.

[0021] In one embodiment, before the step of obtaining the state parameter representing the condensation risk of the heating element, the method further includes:

[0022] Receive a start command for a preset mode and obtain the second ambient temperature of the environment where the heat pump system is located;

[0023] The refrigerant switching component is controlled to operate according to the second ambient temperature, and the heat pump system is controlled to start the preset mode.

[0024] In the preset mode, the first heat exchanger is in a condensation state and the second heat exchanger is in an evaporation state.

[0025] In one embodiment, the step of controlling the operation of the refrigerant switching component according to the second ambient temperature includes:

[0026] When the second ambient temperature is lower than the preset ambient temperature, the refrigerant switching component is controlled to operate so that the refrigerant flows through the bypass branch, and the heat pump is controlled to start the preset mode.

[0027] When the second ambient temperature is greater than or equal to the preset ambient temperature, the refrigerant switching component is controlled to operate so that the refrigerant flows through the throttling branch, and the heat pump system is controlled to start the preset mode.

[0028] Furthermore, to achieve the above objectives, this application also proposes an electrical appliance comprising a control device and a heat pump system as described in any of the preceding claims.

[0029] The heat pump system is 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 heat pump system as described above.

[0030] 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 for the heat pump system as described above.

[0031] One or more technical solutions proposed in this application have at least the following technical effects: When a first throttling device is provided between the first heat exchanger and the refrigerant heat dissipation module in the refrigerant circulation loop of the system, in addition to the throttling branch that can achieve throttling through the throttling component, the first throttling device is also provided with a bypass branch. Through the switching action of the refrigerant switching component, when there is no risk of condensation on the heating component, the refrigerant can flow through the throttling branch to reduce pressure and ensure the heat exchange effect of the system. When there is a risk of condensation on the heating component, the refrigerant flows through the bypass branch and flows into the refrigerant heat dissipation module without throttling. This can avoid the temperature of the refrigerant flowing into the refrigerant heat dissipation module being too low, effectively reduce the risk of condensation on the heating component, and improve the reliability of system operation. Attached Figure Description

[0032] 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.

[0033] 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.

[0034] Figure 1 This is a schematic diagram of the system structure of an embodiment of the heat pump system of this application;

[0035] Figure 2 This is a schematic diagram of the equipment structure of the hardware operating environment involved in the control method of the heat pump system in the embodiments of this application;

[0036] Figure 3 A flowchart illustrating an embodiment of the control method for the heat pump system of this application;

[0037] Figure 4 This is a flowchart illustrating a second embodiment of the control method for a heat pump system in this application.

[0038] 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

[0039] 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.

[0040] 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.

[0041] The main solution of this application embodiment is: to propose a heat pump system, the heat pump system including a refrigerant circulation loop, the refrigerant circulation loop including a first heat exchanger, a first throttling device, a refrigerant heat dissipation module and a second heat exchanger connected in sequence, the refrigerant heat dissipation module being configured to dissipate heat from the heat-generating component; the first throttling device including a refrigerant switching component, a throttling branch and a bypass branch, the throttling branch and the bypass branch being both connected to the refrigerant switching component, the refrigerant switching component being configured to switch the refrigerant flow direction between the throttling branch and the bypass branch; the refrigerant switching component being configured to control the refrigerant flow through the bypass branch when the heat-generating component has a risk of condensation, and to control the refrigerant flow through the throttling branch when the heat-generating component does not have a risk of condensation.

[0042] In this embodiment, for ease of description, the heat pump system will be used as the main implementation subject in the following description.

[0043] In existing technologies, when a throttling device is installed at the front end of the refrigerant heat dissipation module, if the temperature of the refrigerant after throttling is too low, condensation may easily occur on the heat-generating components, affecting the reliability of system operation.

[0044] This application provides the above-mentioned solution. When a first throttling device is provided between the first heat exchanger and the refrigerant heat dissipation module in the refrigerant circulation loop, the first throttling device, in addition to the throttling branch that can achieve throttling through the throttling component, also provides a bypass branch. Through the switching action of the refrigerant switching component, when there is no risk of condensation on the heating component, the refrigerant can flow through the throttling branch to reduce pressure and ensure the heat exchange effect of the system. When there is a risk of condensation on the heating component, the refrigerant flows through the bypass branch and flows into the refrigerant heat dissipation module without throttling. This can avoid the temperature of the refrigerant flowing into the refrigerant heat dissipation module being too low, effectively reduce the risk of condensation on the heating component, and improve the reliability of system operation.

[0045] This application provides a heat pump system 200. The heat pump system 200 can be an air conditioner, a heat pump water heater, or an environmental control system that combines heat pump and gas, etc.

[0046] In this embodiment, refer to Figure 1 The heat pump system 200 includes a refrigerant circulation loop, which includes a compressor 21 and a first heat exchanger 22, a first throttling device 23, a refrigerant heat dissipation module 24 and a second heat exchanger 25 connected in sequence. The refrigerant heat dissipation module 24 is configured to dissipate heat from the heat-generating component 300.

[0047] The first throttling device 23 includes a refrigerant switching component 231, a throttling branch 232, and a bypass branch 233. The throttling branch 232 and the bypass branch 233 are both connected to the refrigerant switching component 231. The refrigerant switching component 231 is configured to switch the refrigerant flow direction between the throttling branch 232 and the bypass branch 233.

[0048] The refrigerant switching component 231 is configured to control the refrigerant flow through the bypass branch 233 when the heating element 300 has a risk of condensation, and to control the refrigerant flow through the throttling branch 232 when the heating element 300 does not have a risk of condensation.

[0049] A second throttling device 28 is provided between the refrigerant heat dissipation module 24 and the second heat exchanger 25. The second throttling device 28 may include throttling components such as an expansion valve or a throttling pipe, or the second throttling device 28 may have the same structure as the first throttling device 23. When the refrigerant flows from the first heat exchanger 22 to the second heat exchanger 25, the second throttling device 28 can throttle and reduce the pressure of the refrigerant flowing through it.

[0050] The refrigerant switching component 231 can switch between a first state and a second state. When the refrigerant switching component 231 is in the first state, the refrigerant flows through the throttling branch 232 and stops flowing through the bypass branch 233. When the refrigerant switching component 231 is in the second state, the refrigerant flows through the bypass branch 233 and stops flowing through the throttling branch 232.

[0051] The refrigerant switching assembly 231 may include a multi-way valve or a solenoid valve installed on the bypass branch 233 and the throttling branch 232 respectively, or a one-way valve installed on the bypass branch 233 and the throttling branch 232 respectively.

[0052] The heat-generating component 300 may include components that generate heat from electronic control components (such as a main control board).

[0053] One of the first heat exchanger 22 and the second heat exchanger 25 is connected to the exhaust port of the compressor 21, and the other of the first heat exchanger 22 and the second heat exchanger 25 is connected to the return port of the compressor 21.

[0054] In this embodiment, the second heat exchanger 25 is an indoor heat exchanger, and the first heat exchanger 22 is an outdoor heat exchanger. In other embodiments, both the first heat exchanger 22 and the second heat exchanger 25 can be located indoors, such as in a portable air conditioner.

[0055] In one implementation, the exhaust port of compressor 21, first heat exchanger 22, first throttling device 23, refrigerant heat dissipation module 24, second throttling device 28, second heat exchanger 25 and return port of compressor 21 are connected in sequence. When compressor 21 is turned on, second throttling device 28 is in throttling state, first heat exchanger 22 is in condensation state, and second heat exchanger 25 is in evaporation state.

[0056] In another implementation, the heat pump system 200 may further include a reversing assembly 26 (e.g., a four-way valve), with the exhaust port of the compressor 21, the return port of the compressor 21, the first heat exchanger 22, and the second heat exchanger 25 all connected to the reversing assembly 26. The reversing assembly 26 has a first operating state and a second operating state. When the reversing assembly 26 operates in the first operating state, the exhaust port of the compressor 21 is connected to the first heat exchanger 22, and the return port of the compressor 21 is connected to the second heat exchanger 25. When the reversing assembly 26 operates in the second operating state, the exhaust port of the compressor 21 is connected to the second heat exchanger 25, and the return port of the compressor 21 is connected to the first heat exchanger 22. When the reversing assembly 26 operates in the first operating state, the second throttling device 28 is in a throttling state, the first heat exchanger 22 is in a condensing state, and the second heat exchanger 25 is in an evaporating state. When the reversing assembly 26 operates in the second operating state, the first throttling device 23 is in a throttling state, the first heat exchanger 22 is in an evaporating state, and the second heat exchanger 25 is in a condensing state.

[0057] The refrigerant switching component 231 is configured to operate in a second state when the heating element 300 has a condensation risk, and in a first state when the heating element 300 does not have a condensation risk. Specifically, the heating element 300 is considered to have a condensation risk when the refrigerant flows from the first heat exchanger 22 to the second heat exchanger 25; or, the refrigerant heat dissipation module 24 is considered to have a condensation risk when the refrigerant flows from the first heat exchanger 22 to the second heat exchanger 25 and the state parameters of the heat pump system 200 itself and / or its environment meet the condensation risk conditions; the heating element 300 is considered not to have a condensation risk when the refrigerant flows from the second heat exchanger 25 to the first heat exchanger 22; or, the heating element 300 is considered not to have a condensation risk when the refrigerant flows from the second heat exchanger 25 to the first heat exchanger 22 and the state parameters of the heat pump system 200 itself and / or its environment do not meet the condensation risk conditions.

[0058] This application provides a heat pump system 200. In this system, a first throttling device 23 is provided between the first heat exchanger 22 and the refrigerant heat dissipation module 24 in the refrigerant circulation loop. In addition to the throttling branch 232 that can achieve throttling through the throttling component, the first throttling device 23 also provides a bypass branch 233. Through the switching action of the refrigerant switching component 231, when there is no risk of condensation on the heating component 300, the refrigerant can flow through the throttling branch 232 to reduce pressure and ensure the heat exchange effect of the system. When there is a risk of condensation on the heating component 300, the refrigerant flows through the bypass branch 233. The refrigerant can flow into the refrigerant heat dissipation module 24 without throttling, which can avoid the temperature of the refrigerant flowing into the refrigerant heat dissipation module 24 being too low, effectively reducing the risk of condensation on the heating component 300 and improving the reliability of system operation.

[0059] In one feasible implementation, the refrigerant switching component 231 includes a three-way valve; the first heat exchanger 22, the first end of the throttling branch 232 and the first end of the bypass branch 233 are respectively connected to different valve ports of the three-way valve, and the second end of the throttling branch 232 and the second end of the bypass branch 233 are both connected to the refrigerant heat dissipation module 24.

[0060] The three-way valve has a first valve position and a second valve position. When the three-way valve is in the first valve position, the first heat exchanger 22 is connected to the throttling branch 232 and blocked from the bypass branch 233. The first throttling device 23 can throttle the refrigerant flowing through it. When the three-way valve is in the second valve position, the first heat exchanger 22 is connected to the bypass branch 233 and blocked from the throttling branch 232. The first throttling device 23 will not throttle the refrigerant flowing through it.

[0061] In this embodiment, the refrigerant switching component 231 is configured as a three-way valve, which is beneficial to the efficiency and control accuracy of refrigerant flow switching, and helps to further reduce the risk of condensation on the heating component 300.

[0062] In other embodiments, the refrigerant switching assembly 231 may also include a first solenoid valve located in the throttling branch 232 and a second solenoid valve located in the bypass branch 233.

[0063] In one feasible implementation, a throttling component with a fixed throttling area is provided on the throttling branch 232.

[0064] In this embodiment, the throttling component is a capillary tube.

[0065] In this embodiment, by means of the above method, it can be ensured that when the throttling effect of the throttling component cannot be adjusted, the refrigerant switching component 231 can also be used to adjust whether the first throttling device 23 throttles, thereby ensuring the heat exchange effect of the system while effectively improving the reliability of the system operation.

[0066] In other embodiments, the throttling component may also be a component that adaptively adjusts the throttling area based on the pressure difference at both ends. It should be noted that the adaptive adjustment here is an internal adjustment of the throttling component rather than an external control.

[0067] In other embodiments, the throttling component may also be a component whose throttling area can be electrically controlled and adjusted, such as an electronic expansion valve. In this case, the efficiency of the refrigerant switching component 231 in switching the refrigerant flow direction is greater than that of the electronic expansion valve in switching the refrigerant flow direction.

[0068] The heat pump system 200 may also include an environmental monitoring module (not shown), which may be located in the environment where the heat pump system 200 is located to monitor the ambient temperature.

[0069] The heat pump system 200 may also include a temperature sensor 27, which is located between the first throttling device 23 and the refrigerant heat dissipation module 24 and can detect the temperature of the refrigerant flowing into the refrigerant heat dissipation module 24.

[0070] This application also proposes an electrical appliance. The electrical appliance may include an air conditioner, a heat pump water heater, or an environmental control system combining heat pump and gas heating.

[0071] Reference Figure 2 The electrical components may include the aforementioned heat pump system 200200 and control device 100, wherein the aforementioned heat pump system 200200 is connected to the control device 100.

[0072] 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 heat pump system in the following embodiment.

[0073] The following is for reference. Figure 2 The diagram illustrates a structural schematic of a control device 100 suitable for implementing embodiments of this application. The heat pump 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 Descriptions), PMPs (Portable Media Players), in-vehicle terminals (e.g., in-vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computers. Figure 2 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.

[0074] like Figure 2 As 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.

[0075] 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 heat pump system of the embodiments disclosed in this application.

[0076] The heat pump system provided in this application, employing the control method of the heat pump system in the following embodiments, can solve the technical problem of how to reduce the risk of condensation on the heating components and improve the reliability of system operation. Compared with the prior art, the beneficial effects of the heat pump system provided in this application are the same as the beneficial effects of the control method of the heat pump system provided in the following embodiments, and other technical features of this heat pump system are the same as those disclosed in the method of the following embodiments, and will not be repeated here.

[0077] 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 heat pump system capable of performing the above functions. The following description uses a heat pump system as an example to illustrate this embodiment and the subsequent embodiments.

[0078] Based on this, embodiments of this application provide a control method for a heat pump system, referring to... Figure 3 , Figure 3 This is a flowchart illustrating the first embodiment of the control method for the heat pump system of this application.

[0079] In this embodiment, the control method of the heat pump system includes steps S10 to S30:

[0080] Step S10: Obtain a status parameter representing the condensation risk of the heating component;

[0081] The status parameter indicates the risk of condensation on the heating element.

[0082] The status parameters may include the first status parameters of the heat pump system itself (e.g., temperature and / or operating mode) and / or the second status parameters of the environment in which the heat pump system is located (e.g., temperature and / or humidity and / or dew point temperature) and / or the third status parameters of the refrigerant heat dissipation module itself (e.g., temperature), etc.

[0083] Step S20: When the state parameters meet the preset conditions, control the refrigerant switching component to operate so that the refrigerant flows through the bypass branch;

[0084] Preset conditions may include the target range that the state parameters need to reach, or the target relationship that the parameters in the state parameters need to satisfy, or the target relationship that the state parameters and preset parameters need to satisfy, and so on.

[0085] When the status parameters meet the preset conditions, it indicates that there is a risk of condensation on the heating component.

[0086] When the state parameters meet the preset conditions, the refrigerant switching component switches from the first state to the second state when it is in the first state; when it is in the second state, it maintains the operation of the second state.

[0087] During the operation of the refrigerant switching component in the second state, the refrigerant flowing out after condensation in the first heat exchanger flows into the refrigerant heat dissipation module without being throttled.

[0088] In this embodiment, the refrigerant switching assembly includes the aforementioned three-way valve. Controlling the operation of the refrigerant switching assembly to allow refrigerant to flow through the bypass branch includes controlling the three-way valve to operate in the second valve position, thereby sequentially connecting the first heat exchanger, the bypass branch, and the refrigerant heat dissipation module. In other embodiments, when the refrigerant switching assembly includes the aforementioned first solenoid valve and second solenoid valve, the second solenoid valve can be controlled to open, and the first solenoid valve can be controlled to close.

[0089] Step S30: If the state parameter does not meet the preset conditions, control the refrigerant switching component to operate so that the refrigerant flows through the throttling branch;

[0090] The preset condition indicates that the heating element is at risk of condensation.

[0091] When the status parameters do not meet the preset conditions, it indicates that there is no risk of condensation on the heating element.

[0092] If the state parameters do not meet the preset conditions, when the refrigerant switching component is in the first state, the refrigerant switching component will maintain the operation of the first state; when the refrigerant switching component is in the second state, the refrigerant switching component will switch from the second state to the first state.

[0093] When the refrigerant switching component is operating in the first state, the refrigerant flowing out after condensation in the first heat exchanger flows into the refrigerant heat dissipation module after being throttled. At this time, the temperature of the refrigerant flowing into the refrigerant heat dissipation module is lower than the temperature of the refrigerant flowing into the refrigerant heat dissipation module when the refrigerant switching component is operating in the second state.

[0094] In this embodiment, the refrigerant switching assembly includes the aforementioned three-way valve. Controlling the operation of the refrigerant switching assembly to allow refrigerant to flow through the bypass branch includes controlling the three-way valve to operate in a first valve position, thereby sequentially connecting the first heat exchanger, the throttling branch, and the refrigerant heat dissipation module. In other embodiments, when the refrigerant switching assembly includes the aforementioned first solenoid valve and second solenoid valve, the second solenoid valve can be controlled to close and the first solenoid valve can be controlled to open.

[0095] This embodiment provides a control method for a heat pump system. Based on the aforementioned heat pump system, this scheme utilizes the switching function of the refrigerant switching component. When there is no risk of condensation on the heating components, the refrigerant can flow through the throttling branch to reduce pressure and ensure the heat exchange effect of the system. When there is a risk of condensation on the heating components, the refrigerant flows through the bypass branch, allowing it to flow into the refrigerant heat dissipation module without throttling. This avoids the refrigerant entering the heat dissipation module at an excessively low temperature, effectively reducing the risk of condensation on the heating components and improving the reliability of system operation.

[0096] In one feasible implementation, before the step of obtaining the state parameter representing the condensation risk of the heating component, the method further includes: controlling the heat pump system to operate in a preset mode, wherein the first heat exchanger is in a condensation state and the second heat exchanger is in an evaporation state; the step of obtaining the state parameter representing the condensation risk of the heating component includes: obtaining the condensation state parameter of the heating component, wherein the state parameter includes the condensation state parameter.

[0097] Preset modes may include cooling mode or dehumidification mode, etc.

[0098] In one implementation, the compressor's exhaust port, first heat exchanger, first throttling device, refrigerant heat dissipation module, second throttling device, second heat exchanger, and compressor return port are connected in sequence. When the compressor is turned on, the second throttling device is in a throttling state, the first heat exchanger is in a condensing state, the second heat exchanger is in an evaporating state, and the heat pump system is in a preset mode.

[0099] In another implementation, the heat pump system may also include the aforementioned reversing assembly. The reversing assembly operates in a first operating state. When the compressor is turned on, the compressor's exhaust port is connected to the first heat exchanger, the compressor's return port is connected to the second heat exchanger, the second throttling device is in a throttling state, the first heat exchanger is in a condensing state, the second heat exchanger is in an evaporating state, and the heat pump system is in a preset mode.

[0100] The state parameters in the preset mode include the first ambient temperature of the environment where the heat pump system is located and the first refrigerant temperature into which the refrigerant flows into the refrigerant heat dissipation module. The preset conditions include a first temperature difference between the first ambient temperature and the first refrigerant temperature that is greater than a first preset temperature difference.

[0101] In this embodiment, both the refrigerant heat dissipation module and the heat-generating component are located in the outdoor environment, so the first ambient temperature may include the outdoor ambient temperature. Alternatively, the first ambient temperature may include the air temperature of the area where the heat-generating component is located. Or, the first ambient temperature may also include the indoor temperature of the indoor space regulated by the heat pump system when it is not turned on, and so on.

[0102] The temperature of the first refrigerant can be detected by the temperature sensor mentioned above.

[0103] The first preset temperature difference is a critical temperature difference value used to distinguish whether the heating element has a risk of condensation. The first preset temperature difference can be a fixed temperature difference set in advance, or it can be a temperature difference determined according to the current operating state of the refrigerant switching component. For example, the first preset temperature difference when the refrigerant switching component is operating in the first state is greater than the first preset temperature difference when the refrigerant switching component is operating in the second state. The first preset temperature difference when the refrigerant switching component is operating in the first state is the maximum temperature difference allowed for the heating element to have no risk of condensation, and the first preset temperature difference when the refrigerant switching component is operating in the second state is the difference between this maximum temperature difference and the preset value. Based on this, it is beneficial to further reduce the risk of condensation.

[0104] The preset conditions may further include a first temperature difference value being greater than a first preset temperature difference and lasting for a preset duration.

[0105] In this embodiment, the risk of condensation on the heating component can be accurately identified based on the first temperature difference value in the preset mode, thereby enabling timely and accurate control of the refrigerant switching component, further reducing the risk of condensation on the heating component and improving the reliability of system operation.

[0106] In other embodiments, the preset mode can also determine whether the heating component has a condensation risk solely based on the first refrigerant temperature. Alternatively, the preset mode can combine the surface temperature of the refrigerant heat dissipation module and the dew point temperature of the environment where the heating component is located to determine whether the heating component has a condensation risk. Alternatively, the preset conditions in the preset mode include a first temperature difference value greater than a first preset temperature difference and an indoor temperature difference value less than or equal to a set temperature difference, thereby improving the reliability of system operation while ensuring indoor comfort.

[0107] In other embodiments, the state parameters may include the heat pump system being in a set mode, in which the first heat exchanger is in an evaporation state and the second heat exchanger is in a condensation state. When the heat pump system includes the aforementioned reversing component, the reversing component operates in a second operating state in the set mode.

[0108] In one feasible implementation, after controlling the refrigerant switching component to operate so that the refrigerant flows through the bypass branch when the state parameters meet the preset conditions, the method further includes: controlling the refrigerant switching component to operate so that the refrigerant flows through the throttling branch when the temperature difference between the current ambient temperature of the heat pump system environment and the current refrigerant temperature flowing into the refrigerant in the refrigerant heat dissipation module is less than or equal to a second preset temperature difference; wherein, the second preset temperature difference is less than the first preset temperature difference.

[0109] Based on this, it is beneficial to ensure that the condensation risk of the heating component is reduced to a reliable range before switching to throttling mode, which is conducive to further reducing the condensation risk of the heating component and improving the stability of system operation.

[0110] In one feasible implementation, after the step of controlling the refrigerant switching component to operate so that the refrigerant flows through the throttling branch when the state parameter does not meet the preset conditions, the method further includes: if the increase in the temperature difference between the current ambient temperature of the heat pump system environment and the current refrigerant temperature flowing into the refrigerant in the refrigerant heat dissipation module is greater than a preset increase, controlling the refrigerant switching component to operate so that the refrigerant flows through the bypass branch.

[0111] The preset amplitude can be a fixed value set in advance, or it can be determined according to the actual operation of the heat pump system. For example, the preset amplitude can be determined according to the temperature difference between the ambient temperature of the second heat exchanger and the set temperature, as well as the current frequency change trend of the compressor.

[0112] Based on this, the system can be switched to non-throttling mode in a timely manner when there is a tendency for condensation on the heating components, which helps to further reduce the risk of condensation and improve the reliability of system operation.

[0113] 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, please refer to... Figure 4 Before the step of obtaining the state parameter representing the condensation state of the heating element, the method further includes:

[0114] Step S01: Receive the start command of the preset mode and obtain the second ambient temperature of the environment where the heat pump system is located; wherein, in the preset mode, the first heat exchanger is in a condensing state and the second heat exchanger is in an evaporating state;

[0115] In this embodiment, both the refrigerant heat dissipation module and the heat-generating component are located in the outdoor environment, so the second ambient temperature may include the outdoor ambient temperature. Alternatively, the second ambient temperature may include the air temperature of the area where the heat-generating component is located. Or, the second ambient temperature may also include the indoor temperature of the indoor space regulated by the heat pump system when it is not turned on, and so on.

[0116] Step S02: Control the operation of the refrigerant switching component according to the second ambient temperature, and control the heat pump system to start the preset mode;

[0117] The refrigerant switching component is controlled based on the relationship between the second ambient temperature and the corresponding temperature threshold, or based on the temperature range in which the second ambient temperature falls.

[0118] In this embodiment, when the second ambient temperature is lower than the preset ambient temperature, the refrigerant switching component is controlled to operate so that the refrigerant flows through the bypass branch, and the heat pump is controlled to start the preset mode; when the second ambient temperature is greater than or equal to the preset ambient temperature, the refrigerant switching component is controlled to operate so that the refrigerant flows through the throttling branch, and the heat pump system is controlled to start the preset mode.

[0119] The preset ambient temperature reflects the cooling demand of the space where the second heat exchanger is located and the effectiveness of the aforementioned preset conditions in determining the risk of condensation. The preset ambient temperature can be a fixed temperature set in advance, or it can be a temperature determined according to the actual operating status of the system. For example, it can be a second temperature difference between the first temperature of the environment where the first heat exchanger is located and the second temperature of the environment where the second heat exchanger is located; the preset ambient temperature can be determined based on the second temperature difference, and so on.

[0120] In this embodiment, the refrigerant switching component includes the aforementioned three-way valve. Controlling the operation of the refrigerant switching component to allow refrigerant to flow through the bypass branch includes: controlling the three-way valve to operate in the second valve position; controlling the operation of the refrigerant switching component to allow refrigerant to flow through the throttling branch includes: controlling the three-way valve to operate in the first valve position.

[0121] In this embodiment, before the preset mode is activated, the initial state of the first throttling device is determined based on the cooling demand characterized by the ambient temperature and the validity of the condensation determination. This is beneficial to improving the system's operational reliability and heat exchange effect. Specifically, when the second ambient temperature is lower than the preset ambient temperature, it indicates that the cooling demand is small and the temperature of the refrigerant flowing into the refrigerant heat dissipation module needs to be very low to be considered as having a condensation risk. At this time, the first throttling device does not throttle, which can avoid the second heat exchanger temperature from being too low, thereby improving the comfort of the space where the second heat exchanger is located and the system's heat exchange effect. Furthermore, it effectively prevents condensation on the heat-generating components when there may be a deviation between the condensation risk characterized by the ambient temperature and the actual condensation risk, further improving the system's operational reliability. When the second ambient temperature is greater than or equal to the preset ambient temperature, it indicates that the cooling demand is large and the condensation determination is valid. At this time, the first throttling device operates in a throttling state, and the condensation risk characterized by the state parameters is used to further control whether the first throttling device throttles, thereby helping to reduce the condensation risk while improving the system's heat exchange effect.

[0122] Based on any of the above embodiments, after the step of controlling the operation of the refrigerant switching component to make the refrigerant flow through the throttling branch, or after the step of controlling the operation of the refrigerant switching component to make the refrigerant flow through the bypass branch, the method further includes: after an interval of a target time, returning to the step of obtaining the state parameter representing the condensation state of the heating element.

[0123] The target duration can be a preset fixed duration, such as 2 seconds or 5 seconds; the target duration can also be determined according to the actual operating conditions of the heat pump system.

[0124] In this embodiment, the target duration is determined based on the aforementioned first temperature difference value. When the refrigerant flows through the throttling branch, the target duration is negatively correlated with the first temperature difference value, which helps to further reduce the risk of condensation. When the refrigerant flows through the bypass branch, the target duration is positively correlated with the first temperature difference value, which helps to ensure the reliability of system operation while improving the stability of system operation.

[0125] Based on any of the above embodiments, during the execution of step S20 or step S30, the compressor is controlled to maintain operation at the target frequency corresponding to the outdoor ambient temperature.

[0126] 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 heat pump system of this application. Any simple modifications based on this technical concept are within the protection scope of this application.

[0127] 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 heat pump system in the above embodiments.

[0128] 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.

[0129] The aforementioned computer-readable storage medium may be included in the heat pump system or may exist independently without being assembled into the heat pump system.

[0130] The aforementioned computer-readable storage medium carries one or more programs that, when executed by the heat pump system, cause the heat pump system to perform the following process: controlling the heat pump system to operate in a preset mode, acquiring state parameters representing the condensation state of the heating element; and, when the state parameters meet preset conditions, controlling the refrigerant switching component to operate so that the refrigerant flows through the bypass branch; wherein, in the preset mode, the first heat exchanger is in a condensation state and the second heat exchanger is in an evaporation state, and the preset conditions indicate that the heating element has a risk of condensation.

[0131] 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).

[0132] 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 heat pump system. This solves the technical problem of how to reduce the risk of condensation on heating components and improve the reliability of system operation. 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 heat pump system provided in the above embodiments, and will not be repeated here.

[0133] 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.

[0134] 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.

[0135] 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 heat pump system, characterized in that, The heat pump system includes a refrigerant circulation loop, which includes a first heat exchanger, a first throttling device, a refrigerant heat dissipation module, and a second heat exchanger connected in sequence. The refrigerant heat dissipation module is configured to dissipate heat from the heat-generating components. The first throttling device includes a refrigerant switching component, a throttling branch, and a bypass branch. Both the throttling branch and the bypass branch are connected to the refrigerant switching component. The refrigerant switching component is configured to switch the refrigerant flow direction between the throttling branch and the bypass branch. The refrigerant switching component is configured to control the refrigerant flow through the bypass branch when the heating element has a risk of condensation, and to control the refrigerant flow through the throttling branch when the heating element does not have a risk of condensation.

2. The heat pump system as described in claim 1, characterized in that, The refrigerant switching component includes a three-way valve; The first heat exchanger, the first end of the throttling branch and the first end of the bypass branch are respectively connected to different valve ports of the three-way valve, and the second end of the throttling branch and the second end of the bypass branch are both connected to the refrigerant heat dissipation module.

3. The heat pump system as described in claim 1 or 2, characterized in that, A throttling component with a fixed throttling area is installed on the throttling branch.

4. A control method for a heat pump system, characterized in that, Applied to a heat pump system as described in any one of claims 1 to 3, the method comprises: Obtain status parameters that indicate the condensation risk of the heating element; When the state parameters meet the preset conditions, the refrigerant switching component is controlled to operate so that the refrigerant flows through the bypass branch; If the state parameters do not meet the preset conditions, control the refrigerant switching component to operate so that the refrigerant flows through the throttling branch; The preset condition indicates that the heating element is at risk of condensation.

5. The method as described in claim 4, characterized in that, Before the step of obtaining the state parameter representing the condensation risk of the heating component, the method further includes: controlling the heat pump system to operate in a preset mode, wherein the first heat exchanger is in a condensation state and the second heat exchanger is in an evaporation state in the preset mode; The status parameters include the first ambient temperature of the environment where the heat pump system is located and the first refrigerant temperature into which the refrigerant flows into the refrigerant heat dissipation module. The preset conditions include a first temperature difference between the first ambient temperature and the first refrigerant temperature that is greater than a first preset temperature difference.

6. The method as described in claim 4, characterized in that, Applied to the heat pump system as described in claim 2 or 3, the step of controlling the operation of the refrigerant switching component to cause refrigerant to flow through the bypass branch includes: The three-way valve is controlled to operate in the second valve position so that the first heat exchanger, the bypass branch and the refrigerant heat dissipation module are connected in sequence. The step of controlling the operation of the refrigerant switching component to make the refrigerant flow through the throttling branch includes: The three-way valve is controlled to operate in the first valve position so that the first heat exchanger, the throttling branch, and the refrigerant heat dissipation module are connected in sequence.

7. The method according to any one of claims 4 to 6, characterized in that, Before the step of obtaining the state parameter representing the condensation risk of the heating element, the method further includes: Receive a start command for a preset mode and obtain the second ambient temperature of the environment where the heat pump system is located; The refrigerant switching component is controlled to operate according to the second ambient temperature, and the heat pump system is controlled to start the preset mode. In the preset mode, the first heat exchanger is in a condensation state and the second heat exchanger is in an evaporation state.

8. The method as described in claim 7, characterized in that, The step of controlling the operation of the refrigerant switching component according to the second ambient temperature includes: When the second ambient temperature is lower than the preset ambient temperature, the refrigerant switching component is controlled to operate so that the refrigerant flows through the bypass branch, and the heat pump is controlled to start the preset mode. When the second ambient temperature is greater than or equal to the preset ambient temperature, the refrigerant switching component is controlled to operate so that the refrigerant flows through the throttling branch, and the heat pump system is controlled to start the preset mode.

9. An electrical appliance, characterized in that, The electrical appliance includes a control device and a heat pump system as described in any one of claims 1 to 3; The heat pump system is 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 heat pump system as described in any one of claims 4 to 8.

10. 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 for the heat pump system as described in any one of claims 4 to 8.

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