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, and relates to the technical field of heat pumps, the heat pump system comprises a refrigerant circulation loop, and the refrigerant circulation loop comprises a compressor, a first heat exchanger, a first throttling device, a refrigerant heat dissipation module and a second heat exchanger, a first throttling device is arranged on the heat pump system, a first temperature sensor is arranged between the first throttling device and the refrigerant heat dissipation module, and the refrigerant heat dissipation module is arranged to exchange heat with a heating component. A first throttling device is controlled to operate in a non-throttling state and / or a compressor is controlled to operate so as to increase the temperature of a refrigerant flowing into the refrigerant heat dissipation module; wherein in the first mode, the first heat exchanger is in a condensation state and the second heat exchanger is in an evaporation state. 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 heat pump technology, and in particular to control methods for heat pump systems, heat pump systems, and storage media. Background Technology

[0002] In heat pump systems such as air conditioners, a refrigerant heat dissipation assembly is installed in the refrigerant circuit to dissipate heat from heat-generating components such as electrical controls. Typically, a temperature sensor is installed between the throttling device and the refrigerant heat dissipation assembly to detect the temperature of the refrigerant flowing into the assembly after throttling, thus controlling system operation to prevent condensation on the heat-generating components. However, if this temperature sensor fails, the system's anti-condensation control fails, potentially leading to excessively low refrigerant temperature flowing into the heat dissipation assembly, causing condensation on the heat-generating components and affecting system reliability. Summary of the Invention

[0003] The main objective of this application is to provide a control method for a heat pump system, a heat pump system, 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 control method for a heat pump system. The heat pump system includes a refrigerant circulation loop, which includes a compressor and a first heat exchanger, a first throttling device, a refrigerant heat dissipation module, and a second heat exchanger connected in sequence. A first temperature sensor is provided between the first throttling device and the refrigerant heat dissipation module. The refrigerant heat dissipation module is configured to exchange heat with a heat-generating component. The method includes:

[0005] When the heat pump system is in the first mode, the status information of the first temperature sensor is acquired, including whether it is in a malfunctioning state.

[0006] In the event that the first temperature sensor is in a malfunctioning state, the first throttling device is controlled to operate in an unthrottling state and / or the compressor is operated to increase the temperature of the refrigerant flowing into the refrigerant heat dissipation module.

[0007] In the first mode, the first heat exchanger is in a condensation state and the second heat exchanger is in an evaporation state.

[0008] In one embodiment, when the first temperature sensor is in a malfunctioning state, the step of controlling the first throttling device to operate in a non-throttling state and / or the compressor to operate in order to increase the temperature of the refrigerant flowing into the refrigerant heat dissipation module includes:

[0009] In the event of a hardware failure in the first temperature sensor, the first throttling device is controlled to operate in an unthrottled state.

[0010] If an installation abnormality occurs when the first temperature sensor hardware is normal, the compressor is controlled to operate in order to increase the temperature of the refrigerant flowing into the refrigerant heat dissipation module.

[0011] The failure states include hardware malfunctions or installation abnormalities.

[0012] In one embodiment, prior to the step of controlling the compressor to operate to increase the temperature of the refrigerant flowing into the refrigerant heat dissipation module, the method further includes:

[0013] When the first temperature sensor hardware is normal, the first temperature detected by the first temperature sensor and the second temperature of the first heat exchanger are obtained within a preset time after the compressor starts.

[0014] If the first temperature and the second temperature meet the loosening condition, it is determined that the first temperature sensor has an installation abnormality;

[0015] The loosening condition indicates that the first temperature sensor is at risk of deviating from its preset installation position.

[0016] In one embodiment, the loosening conditions include the deviation between the first temperature and the preset temperature being less than or equal to a preset value, and the temperature difference between the first temperature and the second temperature being less than a preset temperature difference.

[0017] In one embodiment, after the step of controlling the compressor to increase the temperature of the refrigerant flowing into the refrigerant heat dissipation module when an installation abnormality exists despite the first temperature sensor hardware being normal, the method further includes:

[0018] After a first preset time interval, the process returns to the step of obtaining the first temperature detected by the first temperature sensor and the second temperature of the first heat exchanger within a preset time after the compressor starts, until the heat pump system meets the termination condition. At this point, the first temperature sensor is determined to have deviated from the preset installation position, and a prompt message is output.

[0019] In one embodiment, the termination condition includes the number of times the loosening condition is met after the first mode is initiated being greater than or equal to the target number.

[0020] In one embodiment, after the step of controlling the compressor to increase the temperature of the refrigerant flowing into the refrigerant heat dissipation module when an installation abnormality exists despite the first temperature sensor hardware being normal, the method further includes:

[0021] If no preset instruction is received, the interval is executed for a first preset time period, and the process returns to the step of obtaining the first temperature detected by the first temperature sensor and the second temperature of the first heat exchanger within a preset time period after the compressor starts.

[0022] Upon receiving the preset instruction, the detection of installation abnormality of the first temperature sensor is stopped;

[0023] The preset command includes a shutdown command for the compressor or a start command for a mode other than the first mode.

[0024] In one embodiment, the step of controlling the compressor to operate to increase the temperature of the refrigerant flowing into the refrigerant heat dissipation module includes:

[0025] Control the compressor to stop.

[0026] In one embodiment, a second temperature sensor is installed in the environment where the first heat exchanger is located. After the step of obtaining the status information of the first temperature sensor, the method further includes:

[0027] In the event of a hardware failure in the first temperature sensor, the operating frequency of the compressor is controlled according to the failure status of the second temperature sensor.

[0028] In one embodiment, the step of controlling the operating frequency of the compressor based on the fault state of the second temperature sensor includes:

[0029] In the event of a malfunction in the second temperature sensor, the compressor is controlled to operate at a first target frequency;

[0030] If the second temperature sensor is not faulty, control the compressor to operate at the second target frequency;

[0031] Wherein, the first target frequency is less than the second target frequency.

[0032] In one embodiment, the first target frequency is the minimum operating frequency of the compressor, and before the step of controlling the compressor to operate at the second target frequency, the method further includes:

[0033] If the second temperature sensor is not faulty, the second target frequency is determined based on the ambient temperature detected by the second temperature sensor.

[0034] The second target frequency is negatively correlated with the ambient temperature.

[0035] In addition, to achieve the above objectives, this application also proposes a heat pump system, which includes a control device and a refrigerant circulation loop. The refrigerant circulation loop includes a compressor and a first heat exchanger, a first throttling device, a refrigerant heat dissipation module and a second heat exchanger connected in sequence. A first temperature sensor is provided between the first throttling device and the refrigerant heat dissipation module. The refrigerant heat dissipation module is configured to exchange heat with the heat-generating component.

[0036] The first temperature sensor, the compressor, and the first throttling device are all connected to the control device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor. The computer program is configured to implement the steps of the control method for the heat pump system as described above.

[0037] 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.

[0038] One or more technical solutions proposed in this application have at least the following technical effects: When the refrigerant flows from the first throttling device to the refrigerant heat dissipation module in the heat pump system, if the first temperature sensor fails, the first throttling device does not throttle and / or the temperature of the refrigerant flowing into the refrigerant heat dissipation module is increased by adjusting the operation of the compressor. This helps to avoid the refrigerant temperature flowing into the refrigerant heat dissipation module being too low, effectively reducing the risk of condensation on the heat-generating components and improving the reliability of system operation. Attached Figure Description

[0039] 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.

[0040] 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.

[0041] Figure 1 This is a schematic diagram of the structure of an embodiment of the heat pump system of this application;

[0042] 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;

[0043] Figure 3 A flowchart illustrating an embodiment of the control method for the heat pump system of this application;

[0044] Figure 4 This is a flowchart illustrating Embodiment 2 of the control method for the heat pump system of this application.

[0045] Figure 5 This is a flowchart illustrating a third embodiment of the control method for the heat pump system of this application.

[0046] 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

[0047] 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.

[0048] 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.

[0049] The main solution of this application embodiment is: a control method based on a heat pump system, the heat pump system including a refrigerant circulation loop, the refrigerant circulation loop including a compressor and a first heat exchanger, a first throttling device, a refrigerant heat dissipation module and a second heat exchanger connected in sequence, a first temperature sensor being provided between the first throttling device and the refrigerant heat dissipation module, the refrigerant heat dissipation module being configured to exchange heat with a heat-generating component, the method including: when the heat pump system is in a first mode, acquiring the status information of the first temperature sensor; when the first temperature sensor is in a failure state, controlling the first throttling device to operate in a non-throttling state and / or the compressor to operate to increase the temperature of the refrigerant flowing into the refrigerant heat dissipation module; wherein, in the first mode, the first heat exchanger is in a condensation state and the second heat exchanger is in an evaporation state.

[0050] In this embodiment, for ease of description, the heat pump system will be used as the main implementation subject in the following description.

[0051] In existing technologies, heat pump systems typically use a temperature sensor between the throttling device and the refrigerant heat dissipation component to detect the temperature of the refrigerant flowing into the heat dissipation component after throttling, thus controlling system operation to prevent condensation on the heat-generating components. However, when this temperature sensor fails, the system's anti-condensation control fails, which can easily lead to the refrigerant flowing into the heat dissipation component being too cold, causing condensation on the heat-generating components and affecting the reliability of system operation.

[0052] This application provides the above solution, in which, when the refrigerant flows from the first throttling device to the refrigerant heat dissipation module in the heat pump system, if the first temperature sensor fails, the first throttling device does not throttle and / or the temperature of the refrigerant flowing into the refrigerant heat dissipation module is increased by adjusting the operation of the compressor. This helps to avoid the refrigerant temperature flowing into the refrigerant heat dissipation module being too low, effectively reducing the risk of condensation on the heat-generating components and improving the reliability of system operation.

[0053] This application provides a heat pump system. The heat pump system can be an air conditioner, a heat pump water heater, or a combined heat pump and gas-fired environmental control system, etc.

[0054] In this embodiment, refer to Figure 1The heat pump system includes a refrigerant circulation loop, which includes a compressor 1, a reversing assembly 2, and a first heat exchanger 3, a first throttling device 4, a refrigerant heat dissipation module 5, and a second heat exchanger 6 connected in sequence. The exhaust port of the compressor 1, the return port of the compressor 1, the first heat exchanger 3, and the second heat exchanger 6 are all connected to the reversing assembly 2. The refrigerant heat dissipation module 5 is configured to dissipate heat from the heat-generating component 8.

[0055] In this embodiment, the first heat exchanger 3 is an outdoor heat exchanger, and the second heat exchanger 6 is an indoor heat exchanger. In other embodiments, both the first heat exchanger 3 and the second heat exchanger 6 can be located indoors, such as in a portable air conditioner.

[0056] A second throttling device 7 is provided between the refrigerant heat dissipation module 5 and the second heat exchanger 6. The second throttling device 7 may include throttling components such as an expansion valve, a throttling tube, or a one-way throttling valve. In this embodiment, the second throttling device 7 includes an auxiliary regulating component and a throttling component connected in parallel. The auxiliary regulating component includes a differential pressure throttling valve or a pressure relief valve. The throttling area of ​​the differential pressure throttling valve increases as the pressure difference between the two ends increases, and the pressure relief valve can reduce the load on the system. The throttling component includes a capillary tube or a throttling valve, etc., with a fixed throttling area.

[0057] The heat-generating component 8 may include modules that generate heat in the system, such as the main control board.

[0058] The first throttling device 4 may include a throttling component such as an expansion valve, a throttle valve, or a one-way throttle valve. In this embodiment, the first throttling device 4 includes an electronic expansion valve.

[0059] The second throttling device 7 may include throttling components such as an expansion valve, a throttling valve, or a one-way throttling valve.

[0060] The reversing assembly 2 (e.g., a four-way valve) has a first state and a second state. When the reversing assembly 2 operates in the first state, it connects the exhaust port of the compressor 1 to the second heat exchanger 6 and the return port of the compressor 1 to the first heat exchanger 3. When the reversing assembly 2 operates in the second state, it connects the exhaust port of the compressor 1 to the first heat exchanger 3 and the return port of the compressor 1 to the second heat exchanger 6. In this embodiment, the second state is the default state of the reversing assembly 2 when the heat pump system is shut down.

[0061] The first throttling device 4 is configured to throttle the commutation assembly when it is in a first state. In this embodiment, the second throttling device 7 is configured not to throttle the commutation assembly 2 when it is in the first state and to throttle the commutation assembly 2 when it is in a second state.

[0062] Reference Figure 1 and Figure 2 The heat pump system also includes a first temperature sensor 01, which is located between the first throttling device 4 and the refrigerant heat dissipation module 5.

[0063] Reference Figure 1 and Figure 2 The heat pump system also includes a second temperature sensor 02, which is located in the environment where the first heat exchanger 3 is located, to detect the ambient temperature of the environment where the first heat exchanger 3 is located.

[0064] Reference Figure 1 and Figure 2 The heat pump system also includes a third temperature sensor 03, which is located on the coil of the first heat exchanger 3 to detect the temperature of the first heat exchanger 3.

[0065] Reference Figure 2 The heat pump system also includes a control device 100, and the compressor 1, commutation assembly 2, first temperature sensor 01, second temperature sensor 02, third temperature sensor 03 and first throttling device 4 mentioned above are all connected to the control device 100.

[0066] 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.

[0067] 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.

[0068] like Figure 2As 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] In this embodiment, the control method of the heat pump system includes steps S10 to S20:

[0074] Step S10: When the heat pump system is in the first mode, acquire the status information of the first temperature sensor; wherein, in the first mode, the first heat exchanger is in the condensation state and the second heat exchanger is in the evaporation state.

[0075] In the first mode, the aforementioned reversing component operates in the second state, and the refrigerant discharged from the compressor flows sequentially through the first heat exchanger, the first throttling device, the refrigerant heat dissipation module, the second throttling device, and the second heat exchanger before flowing back to the compressor.

[0076] The status information includes whether the first temperature sensor is in a failed state. The status information may also include the type of failure when it fails (one of the following: temperature detection failure, temperature detection is effective but the temperature is abnormal, or one of the following: hardware failure or installation abnormality).

[0077] In this embodiment, the voltage across the first temperature sensor is detected. If the detected voltage is outside the normal voltage range or is 0, the first temperature sensor is considered to have a hardware fault; if the detected voltage is not 0 but within the normal voltage range, the first temperature sensor is considered to have no hardware fault. In other embodiments, a status command input by a human (e.g., a maintenance personnel) can be obtained, and the presence of a hardware fault or installation abnormality in the first temperature sensor can be determined based on the status command. Alternatively, the failure of the first temperature sensor can be determined based on the relationship between the temperature value detected by the first temperature sensor and a reference temperature value. For example, if the detected temperature value is greater than the reference temperature value, the first temperature sensor is considered to be not faulty; if the detected temperature value is less than or equal to the reference temperature value, the first temperature sensor is considered to be faulty.

[0078] In this embodiment, step S10 is executed upon receiving a start command from the compressor in the heat pump system. In other embodiments, step S10 may also be executed while the compressor is in the on state.

[0079] Step S20: If the first temperature sensor is in a malfunctioning state, control the first throttling device to operate in a non-throttling state and / or the compressor to operate to increase the temperature of the refrigerant flowing into the refrigerant heat dissipation module.

[0080] In this embodiment, the first throttling device includes an electronic expansion valve, which is controlled to operate at its maximum opening when the first temperature sensor is in a malfunctioning state. In other implementations, the first throttling device may include a switching component and a bypass branch and a throttling branch connected in parallel. The bypass branch is a branch that does not throttle the refrigerant flow, and the switching component can be controlled to allow the refrigerant to flow through the bypass branch.

[0081] When the first temperature sensor fails, the compressor can be controlled to operate at a reduced frequency, shut down, or operate at a low frequency lower than a set frequency. In this embodiment, when the first temperature sensor fails, the compressor is controlled to shut down.

[0082] This embodiment provides a control method for a heat pump system. When the refrigerant flows from the first throttling device to the refrigerant heat dissipation module in the heat pump system, if the first temperature sensor fails, the first throttling device does not throttle and / or the temperature of the refrigerant flowing into the refrigerant heat dissipation module is increased by adjusting the operation of the compressor. This helps to avoid the refrigerant temperature flowing into the refrigerant heat dissipation module being too low, effectively reducing the risk of condensation on the heat-generating components and improving the reliability of system operation.

[0083] In one feasible implementation, when the first temperature sensor is in a malfunctioning state, the step of controlling the first throttling device to operate in an unthrottling state and / or the compressor to operate in order to increase the temperature of the refrigerant flowing into the refrigerant heat dissipation module includes:

[0084] In the event of a hardware failure in the first temperature sensor, the first throttling device is controlled to operate in an unthrottled state.

[0085] If an installation abnormality occurs when the first temperature sensor hardware is normal, the compressor is controlled to operate to increase the temperature of the refrigerant flowing into the refrigerant heat dissipation module; wherein, the failure state includes hardware failure or installation abnormality.

[0086] In the event of a hardware failure in the first temperature sensor, the electronic expansion valve is controlled to operate at its maximum opening; in the event of an installation abnormality in the first temperature sensor, the compressor is controlled to shut down.

[0087] In this embodiment, by using the above method, the risk of condensation on the heating component can be effectively reduced regardless of whether the first temperature sensor has a hardware failure or an installation abnormality, thereby effectively improving the reliability of system operation.

[0088] 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 controlling the compressor to operate to increase the temperature of the refrigerant flowing into the refrigerant heat dissipation module, the method further includes:

[0089] Step S201: When the first temperature sensor hardware is normal, acquire the first temperature detected by the first temperature sensor and the second temperature of the first heat exchanger within a preset time after the compressor starts.

[0090] The second temperature is detected by the aforementioned third temperature sensor.

[0091] The preset duration can be a fixed duration set in advance, or it can be determined based on the number of times the compressor started before the current moment when the first temperature sensor hardware was normal.

[0092] Step S202: If the first temperature and the second temperature meet the loosening condition, it is determined that the first temperature sensor has an installation abnormality.

[0093] The loosening condition indicates that the first temperature sensor is at risk of deviating from its preset installation position.

[0094] The preset installation position is the position where the temperature data detected by the first temperature sensor meets the detection accuracy requirements.

[0095] The release conditions may include the target temperature range that the first temperature and the second temperature must respectively meet, or the release conditions may include the target relationship between the first temperature and the second temperature.

[0096] In this embodiment, the loosening conditions include the deviation between the first temperature and the preset temperature being less than or equal to a preset value, and the temperature difference between the first temperature and the second temperature being less than a preset temperature difference. The deviation is the absolute value of the difference between the first temperature and the preset temperature. The temperature difference is the difference between the first temperature and the second temperature.

[0097] In this embodiment, when the air conditioner further includes the aforementioned second temperature sensor, the first temperature and the second temperature can be obtained when both the first temperature sensor and the second temperature sensor are in normal hardware condition.

[0098] In this embodiment, the loosening of the first temperature sensor is accurately identified by combining the first temperature and the second temperature, and the installation abnormality of the first temperature sensor is detected and dealt with in a timely manner, thereby further improving the reliability of system operation.

[0099] In this embodiment, when the first temperature sensor hardware is functioning correctly and the compressor is running, the opening degree of the first throttling device can be controlled based on the temperature detected by the first temperature sensor. Specifically, the target opening degree of the first throttling device is determined based on the temperature detected by the first temperature sensor and the compressor's exhaust temperature, and the first throttling device is controlled to operate at the target opening degree. In other implementations, when the first temperature sensor hardware is functioning correctly and the temperature detected by the first temperature sensor is greater than a first preset temperature, the first throttling device can be controlled to operate in a throttling state (e.g., an electronic expansion valve operating at a throttling opening); when the temperature detected by the first temperature sensor is less than or equal to a second preset temperature, the first throttling device can be controlled to operate in a non-throttling state (e.g., an electronic expansion valve operating at its maximum opening), where the second preset temperature can be less than or equal to the first preset temperature. When the first temperature sensor hardware is normal, the first throttling device can be controlled to operate at the target throttling opening. When the compressor's start-up time is greater than or equal to the set time, the predicted temperature of the refrigerant flowing into the refrigerant heat dissipation module can be determined based on the temperature of the first heat exchanger and the surface temperature of the refrigerant heat dissipation module. The target throttling opening is determined based on the magnitude of the condensation risk of the heating component characterized by the predicted temperature. The first temperature and the second temperature are detected when the first throttling device is operating at the target throttling opening.

[0100] In one feasible implementation, after the step of controlling the compressor to increase the temperature of the refrigerant flowing into the refrigerant heat dissipation module when an installation abnormality exists despite the first temperature sensor hardware being normal, the method further includes:

[0101] After a first preset time interval, the process returns to the step of obtaining the first temperature detected by the first temperature sensor and the second temperature of the first heat exchanger within a preset time after the compressor starts, until the heat pump system meets the termination condition. At this point, the first temperature sensor is determined to have deviated from the preset installation position, and a prompt message is output.

[0102] The termination condition is the condition that must be met when the probability of the first temperature sensor deviating from the preset installation position is greater than a preset probability (e.g., 80%). The termination condition can be a condition set by the user based on their own needs, or it can be a default condition in the system. The termination condition can be a condition that must be met, such as the number of fault determinations and / or the interval between the time when the start command of the first mode is received and the current time, and / or the heat exchanger temperature information.

[0103] In this embodiment, the termination condition includes the number of times the loosening condition is met after the first mode is started being greater than or equal to a target number. The target number can be a pre-set fixed number, such as a target number of 3 times; or, the target number can be a number determined based on the actual operation of the system.

[0104] When the termination conditions are met, the compressor will either stop or remain in a stopped state.

[0105] The notification message includes information about the first temperature sensor being deviated from its preset installation position.

[0106] The prompt message can be output in at least one of the following ways: sound broadcast, indicator light, message push, fault code display, etc.

[0107] In this embodiment, the above method can be used to determine whether the first temperature sensor has an installation abnormality more than once. Only when the installation abnormality is determined more than once is the first temperature sensor identified as having a loose problem. This helps to further improve the accuracy of the first temperature sensor failure identification and effectively balances the risk of condensation on the heating component with the normal operation of the first mode.

[0108] In other embodiments, the termination condition may also include a decrease in the temperature difference between the first temperature and the second temperature exceeding a preset value.

[0109] In one feasible implementation, after the step of controlling the compressor to increase the temperature of the refrigerant flowing into the refrigerant heat dissipation module when there is an installation abnormality even when the first temperature sensor hardware is normal, the method further includes: if no preset instruction is received, executing the step of returning to the step of obtaining the first temperature detected by the first temperature sensor and the second temperature of the first heat exchanger within a preset time after the compressor starts, after an interval of a first preset time, when no preset instruction is received; and stopping the installation abnormality detection of the first temperature sensor when the preset instruction is received; wherein, the preset instruction includes a compressor shutdown instruction or a start instruction of a mode other than the first mode.

[0110] In modes other than the first mode, the commutation assembly operates in the first state described above, with the first heat exchanger in an evaporation state and the second heat exchanger in a condensation state.

[0111] Stopping the installation anomaly detection of the first temperature sensor means ceasing to collect the first and second temperatures and making a judgment based on whether the first and second temperatures meet the loosening conditions.

[0112] In this embodiment, by means of the above method, it can be ensured that the fault detection of the commutation component can be stopped in time when the system does not need to continue running the first mode, so as to ensure the normal operation of other modes or to ensure that the compressor stops in time to meet the user's needs.

[0113] Based on any of the above embodiments, in the third 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. In addition, a second temperature sensor is installed in the environment where the first heat exchanger is located; please refer to... Figure 5A second temperature sensor is installed in the environment where the first heat exchanger is located. After the step of obtaining the status information of the first temperature sensor, the method further includes:

[0114] Step S30: In the event of a hardware failure in the first temperature sensor, control the first throttling device to operate in a non-throttling state and control the operating frequency of the compressor according to the failure state of the second temperature sensor.

[0115] In this embodiment, if the first temperature sensor has a hardware failure, the first throttling device is controlled to operate in a non-throttling state, and the operating frequency of the compressor is controlled according to the failure state of the second temperature sensor.

[0116] Fault status can include whether a fault exists. Furthermore, fault status can also include fault type (such as temperature detection failure, temperature detection being effective but the temperature is abnormal, or hardware failure and installation abnormality).

[0117] Different fault states correspond to different target frequencies or frequency control methods for the compressor.

[0118] In this embodiment, if the second temperature sensor malfunctions, the compressor is controlled to operate at a first target frequency; if the second temperature sensor is not malfunctioning, the compressor is controlled to operate at a second target frequency; wherein the first target frequency is less than the second target frequency.

[0119] The first target frequency and the second target frequency can be preset fixed frequencies, or frequencies determined according to the actual operating conditions of the heat pump system.

[0120] In this embodiment, before the step of controlling the compressor to operate at the second target frequency, the method further includes: determining the second target frequency based on the ambient temperature detected by the second temperature sensor, assuming the second temperature sensor is not faulty; wherein the second target frequency is negatively correlated with the ambient temperature. For example, when the ambient temperature is less than or equal to a preset ambient temperature, the upper limit frequency is determined as the second target frequency; when the ambient temperature is greater than the preset ambient temperature, the upper limit frequency is reduced by a preset coefficient to obtain the second target frequency, in which case the ratio of the second target frequency to the upper limit frequency is greater than a preset ratio (e.g., 70%). Alternatively, the ambient temperature can be substituted into a preset formula to calculate the second target frequency. The upper limit frequency is the frequency limit corresponding to the ambient temperature.

[0121] In this embodiment, the first target frequency is the minimum operating frequency of the compressor, which helps to further improve the reliability of system operation. In other embodiments, if the second temperature sensor malfunctions, the first target frequency can also be determined based on the type of malfunction.

[0122] In this embodiment, when the first temperature sensor is in a fault state, the compressor operating frequency is controlled based on the fault status of the second temperature sensor. This facilitates further reduction of the condensation risk on the heat-generating components through the cooperation of the compressor and the first throttling device. Specifically, when a fault occurs, the compressor operates at a lower frequency to further reduce the condensation risk on the heat-generating components and improve system reliability. When there is no fault, the compressor operates at a higher frequency to ensure the heat exchange effect of the system. The second target frequency is negatively correlated with the ambient temperature. Since the higher the ambient temperature, the higher the condensation risk, this method can ensure the heat exchange effect of the system while further reducing the condensation risk on the heat-generating components.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] 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: when the heat pump system is in a first mode, acquire the status information of the first temperature sensor, the status information including whether it is in a failed state; when the first temperature sensor is in a failed state, control the first throttling device to operate in a non-throttling state and / or the compressor to operate to increase the temperature of the refrigerant flowing into the refrigerant heat dissipation module; wherein, in the first mode, the first heat exchanger is in a condensing state and the second heat exchanger is in an evaporating state.

[0128] 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).

[0129] 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.

[0130] 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.

[0131] 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.

[0132] The above descriptions are merely some embodiments of this application and do not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the content of this specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application. Therefore, the protection scope of this application should be determined by the scope of the claims.

Claims

1. A control method for a heat pump system, characterized in that, The heat pump system includes a refrigerant circulation loop, which includes a compressor and a first heat exchanger, a first throttling device, a refrigerant heat dissipation module, and a second heat exchanger connected in sequence. A first temperature sensor is installed between the first throttling device and the refrigerant heat dissipation module. The refrigerant heat dissipation module is configured to exchange heat with a heat-generating component. The method includes: When the heat pump system is in the first mode, the status information of the first temperature sensor is acquired, including whether it is in a malfunctioning state. In the event that the first temperature sensor is in a malfunctioning state, the first throttling device is controlled to operate in an unthrottling state and / or the compressor is operated to increase the temperature of the refrigerant flowing into the refrigerant heat dissipation module. In the first mode, the first heat exchanger is in a condensation state and the second heat exchanger is in an evaporation state.

2. The method as described in claim 1, characterized in that, When the first temperature sensor is in a malfunctioning state, the steps of controlling the first throttling device to operate in an unthrottling state and / or the compressor to operate in order to increase the temperature of the refrigerant flowing into the refrigerant heat dissipation module include: In the event of a hardware failure in the first temperature sensor, the first throttling device is controlled to operate in an unthrottled state. If an installation abnormality occurs when the first temperature sensor hardware is normal, the compressor is controlled to operate in order to increase the temperature of the refrigerant flowing into the refrigerant heat dissipation module. The failure states include hardware malfunctions or installation abnormalities.

3. The method as described in claim 2, characterized in that, Before the step of controlling the compressor to operate to increase the temperature of the refrigerant flowing into the refrigerant heat dissipation module, the method further includes: When the first temperature sensor hardware is functioning normally, the first temperature detected by the first temperature sensor and the second temperature of the first heat exchanger are obtained within a preset time after the compressor starts. If the first temperature and the second temperature meet the loosening condition, it is determined that the first temperature sensor has an installation abnormality; The loosening condition indicates that the first temperature sensor is at risk of deviating from its preset installation position.

4. The method as described in claim 3, characterized in that, The loosening conditions include the deviation between the first temperature and the preset temperature being less than or equal to a preset value, and the temperature difference between the first temperature and the second temperature being less than a preset temperature difference.

5. The method as described in claim 3, characterized in that, Following the step of controlling the compressor to increase the temperature of the refrigerant flowing into the refrigerant heat dissipation module when there is an installation abnormality even when the first temperature sensor hardware is normal, the method further includes: After a first preset time interval, the process returns to the step of obtaining the first temperature detected by the first temperature sensor and the second temperature of the first heat exchanger within a preset time after the compressor starts, until the heat pump system meets the termination condition. At this point, the first temperature sensor is determined to have deviated from the preset installation position, and a prompt message is output.

6. The method as described in claim 5, characterized in that, The termination condition includes the number of times the loosening condition is met after the first mode is started being greater than or equal to the target number.

7. The method as described in claim 5, characterized in that, Following the step of controlling the compressor to increase the temperature of the refrigerant flowing into the refrigerant heat dissipation module when there is an installation abnormality even when the first temperature sensor hardware is normal, the method further includes: If no preset instruction is received, the interval is executed for a first preset time period, and the process returns to the step of obtaining the first temperature detected by the first temperature sensor and the second temperature of the first heat exchanger within a preset time period after the compressor starts. Upon receiving the preset instruction, the detection of installation abnormality of the first temperature sensor is stopped; The preset command includes a shutdown command for the compressor or a start command for a mode other than the first mode.

8. The method as described in claim 2, characterized in that, The steps of controlling the compressor to increase the temperature of the refrigerant flowing into the refrigerant heat dissipation module include: Control the compressor to stop.

9. The method according to any one of claims 1 to 8, characterized in that, A second temperature sensor is installed in the environment where the first heat exchanger is located. After the step of obtaining the status information of the first temperature sensor, the method further includes: In the event of a hardware failure in the first temperature sensor, the first throttling device is controlled to operate in an unthrottling state, and the operating frequency of the compressor is controlled according to the failure status of the second temperature sensor.

10. The method as described in claim 9, characterized in that, The step of controlling the operating frequency of the compressor based on the fault status of the second temperature sensor includes: In the event of a malfunction in the second temperature sensor, the compressor is controlled to operate at a first target frequency; If the second temperature sensor is not faulty, control the compressor to operate at the second target frequency; Wherein, the first target frequency is less than the second target frequency.

11. The method as described in claim 9, characterized in that, The first target frequency is the minimum operating frequency of the compressor. Before the step of controlling the compressor to operate at the second target frequency, the method further includes: If the second temperature sensor is not faulty, the second target frequency is determined based on the ambient temperature detected by the second temperature sensor. The second target frequency is negatively correlated with the ambient temperature.

12. A heat pump system, characterized in that, The heat pump system includes a control device and a refrigerant circulation loop. The refrigerant circulation loop includes a compressor and a first heat exchanger, a first throttling device, a refrigerant heat dissipation module, and a second heat exchanger connected in sequence. A first temperature sensor is provided between the first throttling device and the refrigerant heat dissipation module. The refrigerant heat dissipation module is configured to exchange heat with the heat-generating components. The first temperature sensor, the compressor, and the first throttling device are all connected to the control device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor. The computer program is configured to implement the steps of the control method for the heat pump system as described in any one of claims 1 to 11.

13. 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 1 to 11.

Images