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. A refrigerant circulation loop of the heat pump system comprises a compressor, an indoor heat exchanger, a first throttling device and an outdoor heat exchanger, the method comprises the steps that the heat pump system is controlled to operate so that the outdoor heat exchanger can be in a condensation state and the indoor heat exchanger can be in an evaporation state; and the first throttling device and / or the compressor are / is controlled to operate according to the temperature of the outdoor heat exchanger and the outdoor environment temperature detected by an outdoor temperature sensor of the heat pump system. The system reliability is guaranteed, and the refrigerating effect of the heat pump system is improved.

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] A heat pump system can release cooling energy to lower the indoor temperature. When cooling, the system typically uses a temperature sensor on the outdoor unit to detect the ambient temperature and limits the compressor's operation based on that temperature to ensure reliability.

[0003] However, when heat pump systems are used in high-temperature areas, the temperature sensor on the outdoor unit will detect a much higher temperature than the actual air temperature due to ground radiation, solar radiation, and other factors. This can cause the heat pump system to unnecessarily limit its cooling output or even fail to start, thus affecting the cooling effect of the heat pump system. Summary of the Invention

[0004] 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 ensure system reliability and improve the cooling effect of the heat pump system.

[0005] To achieve the above objectives, this application proposes a control method for a heat pump system. The refrigerant circulation loop of the heat pump system includes a compressor and an indoor heat exchanger, a first throttling device, and an outdoor heat exchanger connected in sequence. The method includes:

[0006] The heat pump system is controlled to keep the outdoor heat exchanger in a condensing state and the indoor heat exchanger in an evaporating state.

[0007] The operation of the first throttling device and / or the compressor is controlled based on the outdoor heat exchanger temperature and the outdoor ambient temperature detected by the outdoor temperature sensor of the heat pump system.

[0008] In one embodiment, the refrigerant circulation loop further includes a refrigerant heat dissipation component and a second throttling device. The first throttling device, the refrigerant heat dissipation module, the first throttling device, and the indoor heat exchanger are connected in sequence. The outdoor heat exchanger temperature is detected when the compressor is not turned on. The temperature detected by the outdoor temperature sensor when the compressor is not turned on is defined as the initial ambient temperature. The step of controlling the operation of the first throttling device based on the outdoor heat exchanger temperature and the outdoor ambient temperature detected by the outdoor temperature sensor of the heat pump system includes:

[0009] If the temperature difference between the initial ambient temperature and the outdoor heat exchanger temperature is greater than the first preset temperature difference, the first throttling device is controlled to adjust its operating degree according to the reliability status parameters of the heat pump system.

[0010] When the temperature difference between the initial ambient temperature and the outdoor heat exchanger temperature is less than or equal to the first preset temperature difference, and when the initial ambient temperature is greater than or equal to the outdoor heat exchanger temperature, the first throttling device is controlled to operate in a non-throttling state.

[0011] In one embodiment, the outdoor heat exchanger temperature is detected when the compressor is not turned on, and the temperature detected by the outdoor temperature sensor when the compressor is not turned on is defined as the initial ambient temperature. The step of controlling the compressor operation based on the outdoor heat exchanger temperature and the initial ambient temperature includes:

[0012] Based on the outdoor heat exchanger temperature and the initial ambient temperature, determine the target correspondence between the outdoor ambient temperature change state and the compressor control parameters;

[0013] During the operation of the compressor, the temperature change state of the outdoor environment is determined based on the current ambient temperature detected by the outdoor temperature sensor and the initial ambient temperature.

[0014] The compressor's operating frequency is adjusted based on the temperature change state and the target correspondence.

[0015] In one embodiment, the step of determining the target correspondence between the outdoor ambient temperature change state and the compressor control parameters based on the outdoor heat exchanger temperature and the initial ambient temperature includes:

[0016] If the temperature difference between the initial ambient temperature and the outdoor heat exchanger temperature is greater than a first preset temperature difference, the first correspondence is determined as the target correspondence; and / or,

[0017] If the temperature difference between the initial ambient temperature and the outdoor heat exchanger temperature is less than or equal to the first preset temperature difference, and the initial ambient temperature is greater than or equal to the outdoor heat exchanger temperature, then the second correspondence is determined as the target correspondence.

[0018] The first correspondence includes increasing the compressor frequency when the current ambient temperature is lower than the initial ambient temperature, and maintaining the current frequency or reducing the compressor frequency when the current ambient temperature is greater than or equal to the initial ambient temperature. The second correspondence includes maintaining the current frequency or increasing the compressor frequency when the temperature difference between the current ambient temperature and the initial ambient temperature is less than or equal to a second preset temperature difference, and stopping the compressor or reducing the compressor frequency when the temperature difference between the current ambient temperature and the initial ambient temperature is greater than the second preset temperature difference.

[0019] In one embodiment, when the target correspondence is the first correspondence, the step of controlling the compressor to adjust its operating frequency according to the temperature change state and the target correspondence includes:

[0020] When the current ambient temperature is lower than the initial ambient temperature, the frequency adjustment amplitude is determined based on the relationship between the temperature difference between the initial ambient temperature and the current ambient temperature and the initial ambient temperature.

[0021] The compressor is controlled to increase its operating frequency by adjusting the amplitude according to the frequency.

[0022] In one embodiment, the method further includes:

[0023] The upper limit of the compressor frequency is determined based on the temperature of the outdoor heat exchanger.

[0024] When the target correspondence is the first correspondence, after the step of controlling the compressor to adjust its operating frequency according to the temperature change state and the target correspondence, the method further includes:

[0025] If the operating frequency of the compressor does not reach the upper limit of the frequency, return to the step of determining the temperature change state of the outdoor environment based on the current ambient temperature detected by the outdoor temperature sensor and the initial ambient temperature during the operation of the compressor;

[0026] If the operating frequency of the compressor does not reach the upper frequency limit, the compressor is controlled to maintain operation at the upper frequency limit.

[0027] In one embodiment, when the target correspondence is the first correspondence, after the step of determining the temperature change state of the outdoor environment based on the current ambient temperature detected by the outdoor temperature sensor and the initial ambient temperature during the operation of the compressor, the method further includes:

[0028] When the current ambient temperature is greater than or equal to the initial ambient temperature, the first throttling device is controlled to operate in an unthrottling state.

[0029] In one embodiment, before the step of determining the temperature change state of the outdoor environment based on the current ambient temperature detected by the outdoor temperature sensor and the initial ambient temperature during the operation of the compressor, the method further includes:

[0030] The target duration is determined based on the outdoor heat exchanger temperature and the initial ambient temperature.

[0031] The step of determining the temperature change state of the outdoor environment based on the current ambient temperature detected by the outdoor temperature sensor and the initial ambient temperature during the operation of the compressor includes:

[0032] If the operating time of the compressor after startup is greater than or equal to the target duration, the temperature change state of the outdoor environment is determined based on the current ambient temperature detected by the outdoor temperature sensor and the initial ambient temperature.

[0033] In one embodiment, the step of determining the target duration based on the outdoor heat exchanger temperature and the initial ambient temperature includes:

[0034] If the temperature difference between the initial ambient temperature and the outdoor heat exchanger temperature is greater than a first preset temperature difference, the first duration is determined as the target duration.

[0035] If the temperature difference between the initial ambient temperature and the outdoor heat exchanger temperature is less than or equal to the first preset temperature difference, and the initial ambient temperature is greater than or equal to the outdoor heat exchanger temperature, then the second duration is determined as the target duration.

[0036] Wherein, the first duration is less than or equal to the second duration.

[0037] In one embodiment, the temperature detected by the outdoor temperature sensor when the compressor is not turned on is defined as the initial ambient temperature. After the step of controlling the heat pump system to operate so that the outdoor heat exchanger is in a condensing state and the indoor heat exchanger is in an evaporating state, the method further includes:

[0038] If the initial ambient temperature is higher than the preset ambient temperature, the step of controlling the operation of the first throttling device and / or the compressor based on the outdoor ambient temperature detected by the outdoor temperature sensor of the heat pump system is executed.

[0039] In one embodiment, before the step of controlling the operation of the first throttling device and / or the compressor based on the outdoor heat exchanger temperature and the outdoor ambient temperature detected by the outdoor temperature sensor of the heat pump system, the method further includes:

[0040] When the initial ambient temperature is higher than the preset ambient temperature, the compressor is controlled to operate at a frequency lower than the preset frequency.

[0041] 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, wherein the refrigerant circulation loop includes a compressor and an indoor heat exchanger, a first throttling device and an outdoor heat exchanger connected in sequence.

[0042] Both the first throttling device and the compressor are 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.

[0043] 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.

[0044] The one or more technical solutions proposed in this application have at least the following technical effects: During the evaporation of the indoor heat exchanger and the condensation of the outdoor heat exchanger, the solution combines the outdoor heat exchanger temperature and the ambient temperature detected by the outdoor temperature sensor to control the operating status of the throttling device and / or compressor between the condenser and the evaporator. The outdoor heat exchanger temperature can reflect the deviation between the detected ambient temperature and the actual ambient temperature. Based on this, it is beneficial to improve the accuracy of the control of the first throttling device and / or compressor, ensure the reliability of the system, and reduce unnecessary restrictions on the cooling output or even the inability to start the heat pump system, effectively ensuring the reliability of the system and improving the cooling effect of the heat pump system. Attached Figure Description

[0045] 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.

[0046] 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.

[0047] Figure 1 This is a schematic diagram of the structure of an embodiment of the heat pump system of this application;

[0048] 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;

[0049] Figure 3 A flowchart illustrating an embodiment of the control method for a heat pump system according to this application;

[0050] Figure 4 This is a flowchart illustrating Embodiment 2 of the control method for the heat pump system of this application.

[0051] Figure 5This is a flowchart illustrating a third embodiment of the control method for the heat pump system of this application.

[0052] 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

[0053] 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.

[0054] 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.

[0055] The main solution of this application embodiment is: a control method based on a heat pump system, wherein the refrigerant circulation loop of the heat pump system includes a compressor and an indoor heat exchanger, a first throttling device, a refrigerant heat dissipation assembly, a second throttling device, and an outdoor heat exchanger connected in sequence. The method includes: controlling the operation of the heat pump system to make the outdoor heat exchanger condense in a condensing state and the indoor heat exchanger evaporate in an evaporating state; and controlling the operation of the first throttling device and / or the compressor based on the outdoor heat exchanger temperature and the outdoor ambient temperature detected by the outdoor temperature sensor of the heat pump system.

[0056] In this embodiment, for ease of description, the heat pump system will be used as the main implementation subject in the following description.

[0057] In existing technologies, when heat pump systems are used in high-temperature areas, the temperature sensor on the outdoor unit will detect a much higher temperature than the actual air temperature due to ground radiation, solar radiation, and other factors. This can cause the heat pump system to unnecessarily limit its cooling output or even fail to start, thus affecting the cooling effect of the heat pump system.

[0058] This application provides the above-mentioned solution, which controls the operating status of the throttling device and / or compressor between the condenser and evaporator by combining the outdoor heat exchanger temperature and the ambient temperature detected by the outdoor temperature sensor during the evaporation process of the indoor heat exchanger and the outdoor heat exchanger. The outdoor heat exchanger temperature can reflect the deviation between the detected ambient temperature and the actual ambient temperature. Based on this, it is beneficial to improve the accuracy of the control of the first throttling device and / or compressor, ensure the reliability of the system, and reduce unnecessary limitation of the cooling output or even failure to start the heat pump system, effectively ensuring the reliability of the system and improving the cooling effect of the heat pump system.

[0059] 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.

[0060] 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 an outdoor heat exchanger 3, a first throttling device 4, a refrigerant heat dissipation module 5, and an indoor heat exchanger 6 connected in sequence. The exhaust port of the compressor 1, the return port of the compressor 1, the outdoor heat exchanger 3, and the indoor 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.

[0061] A second throttling device 7 is provided between the refrigerant heat dissipation module 5 and the indoor heat exchanger 6. The second throttling device 7 may include throttling components such as an expansion valve, a throttling pipe, 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 fluid component with a fixed throttling area, such as a capillary tube or a throttling valve.

[0062] 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.

[0063] The second throttling device 7 may have the same structure as the first throttling device 4 or a different structure.

[0064] The reversing assembly 2 (e.g., a four-way valve) has a first state and a second state. When operating in the first state, the reversing assembly 2 connects the exhaust port of the compressor 1 to the indoor heat exchanger 6 and the return port of the compressor 1 to the outdoor heat exchanger 3. When operating in the second state, the reversing assembly 2 connects the exhaust port of the compressor 1 to the outdoor heat exchanger 3 and the return port of the compressor 1 to the indoor 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.

[0065] The second throttling device 7 is configured to not throttle when the commutation assembly 2 is operating in the first state and to throttle when the commutation assembly 2 is operating in the second state.

[0066] Reference Figure 2 The heat pump system also includes an outdoor temperature sensor 01, which is located in the outdoor unit of the heat pump system. The outdoor unit of the heat pump system may include the compressor 1, commutator 2, second throttling device, first throttling device 4, refrigerant heat dissipation module 5, etc. The outdoor temperature sensor is used to detect the outdoor ambient temperature.

[0067] Reference Figure 2 The heat pump system also includes a control device 100, and the compressor 1, commutation assembly 2, outdoor temperature sensor 01 and first throttling device 4 mentioned above are all connected to the control device 100.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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 ensure system reliability and improve the cooling effect of the heat pump system. Compared with the prior art, the beneficial effects of the heat pump system provided in this application are the same as those 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.

[0073] 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.

[0074] 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.

[0075] In this embodiment, the control method of the heat pump system includes steps S10 to S20:

[0076] Step S10: Control the operation of the heat pump system to make the outdoor heat exchanger condense and the indoor heat exchanger evaporate.

[0077] In this embodiment, upon receiving the start command for the first mode, the reversing assembly can be controlled to operate in the second state, the compressor can be started, the outdoor fan corresponding to the outdoor heat exchanger can be turned on, the second throttling device is in a throttling state, and the refrigerant discharged from the compressor flows sequentially through the outdoor heat exchanger, the first throttling device, the refrigerant heat dissipation module, the second throttling device, and the indoor heat exchanger before returning to the compressor. The indoor heat exchanger is in an evaporating state, and the outdoor heat exchanger is in a condensing state. In the first mode, the reversing assembly operates in the second state, the outdoor heat exchanger is set to a condensing state, and the indoor heat exchanger is set to an evaporating state. In the first mode, the indoor heat exchanger can release cooling energy to reduce indoor temperature and / or humidity.

[0078] Step S20: Control the operation of the first throttling device and / or the compressor based on the outdoor heat exchanger temperature and the outdoor ambient temperature detected by the outdoor temperature sensor of the heat pump system.

[0079] The outdoor heat exchanger temperature may include the temperature of the outdoor heat exchanger detected when the compressor is not running and / or running. In this embodiment, the outdoor heat exchanger temperature is the temperature of the outdoor heat exchanger detected when the compressor is not running.

[0080] The outdoor ambient temperature may include the ambient temperature detected by the outdoor temperature sensor when the compressor is not running and / or running.

[0081] In this embodiment, the refrigerant circulation loop of the heat pump system includes the aforementioned refrigerant heat dissipation module and second throttling device. The operating degree of the first throttling device on the refrigerant inflow side of the refrigerant heat dissipation module can be controlled based on the outdoor heat exchanger temperature and the outdoor ambient temperature. In other embodiments, the refrigerant circulation loop may not include a refrigerant heat dissipation module and a second throttling device; in this case, the operating degree of the first throttling device on the refrigerant inflow side of the indoor heat exchanger is controlled based on the outdoor heat exchanger temperature and the outdoor ambient temperature.

[0082] In one implementation, the operating degree of the first throttling device and / or the operating frequency of the compressor can be controlled based on the temperature difference or relationship between the outdoor heat exchanger temperature and the outdoor ambient temperature. In another implementation, the target opening degree of the first throttling device and / or the target operating frequency of the compressor can be calculated by combining the outdoor heat exchanger temperature and the outdoor ambient temperature. In yet another implementation, a first temperature range containing the outdoor heat exchanger temperature and a second temperature range containing the outdoor ambient temperature can be determined, and the target opening degree of the first throttling device and / or the target operating frequency of the compressor can be determined based on the first and second temperature ranges.

[0083] This embodiment provides a control method for a heat pump system. During the evaporation of the indoor heat exchanger and the condensation of the outdoor heat exchanger, this method combines the outdoor heat exchanger temperature and the ambient temperature detected by an outdoor temperature sensor to control the operating status of the throttling device and / or compressor between the condenser and evaporator. The outdoor heat exchanger temperature reflects the deviation between the detected ambient temperature and the actual ambient temperature. Based on this, it is beneficial to improve the accuracy of the control of the first throttling device and / or compressor, reduce unnecessary restrictions on the cooling output of the heat pump system or even prevent it from starting, effectively ensure system reliability, and improve the cooling effect of the heat pump system.

[0084] In one feasible implementation, the temperature detected by the outdoor temperature sensor when the compressor is not turned on is defined as the initial ambient temperature. After step S10, the method further includes:

[0085] If the initial ambient temperature is higher than the preset ambient temperature, the step of controlling the operation of the first throttling device and / or the compressor based on the outdoor ambient temperature detected by the outdoor temperature sensor of the heat pump system is executed.

[0086] In this embodiment, after receiving the start command of the first mode, the initial temperature of the outdoor heat exchanger can be detected as the outdoor heat exchanger temperature before the compressor starts, and the temperature detected by the outdoor temperature sensor can be obtained as the initial ambient temperature.

[0087] The preset ambient temperature is the minimum outdoor ambient temperature that the heat pump system needs to reach when it needs to limit the cooling output. In other words, when the actual ambient temperature is higher than the preset ambient temperature, the system needs to limit the cooling output to improve operational reliability.

[0088] In this embodiment, when the outdoor ambient temperature detection data is too high and affects the system's cooling output capacity, the throttling device and / or compressor operation is controlled by combining the outdoor heat exchanger temperature and the ambient temperature detected by the outdoor temperature sensor. This helps to further improve the system's operational reliability and effectively balance the cooling effect.

[0089] In one feasible implementation, before step S20, if the initial ambient temperature is greater than the preset ambient temperature, the compressor is controlled to operate at a frequency lower than the preset frequency.

[0090] The frequency below the preset frequency here refers to the low frequency. The preset frequency can be 30%-50% of the compressor's maximum frequency.

[0091] In this embodiment, the initial operating frequency of the compressor can be determined within the range of a minimum frequency greater than the oil return requirement and a frequency less than a preset frequency, and the compressor can be controlled to operate at the initial frequency.

[0092] In this embodiment, when the detected outdoor ambient temperature is too high, the compressor first runs at a low frequency, and then the operating frequency of the compressor is further adjusted based on the temperature detected by the outdoor temperature sensor and the outdoor heat exchanger temperature, which helps to improve the cooling effect while ensuring the reliability of the system.

[0093] 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. In addition, the refrigerant circulation loop further includes a refrigerant heat dissipation component and a second throttling device. The first throttling device, the refrigerant heat dissipation module, the first throttling device, and the indoor heat exchanger are connected in sequence. The outdoor heat exchanger temperature is detected when the compressor is not turned on. The temperature detected by the outdoor temperature sensor when the compressor is not turned on is defined as the initial ambient temperature, referring to... Figure 4 The step of controlling the operation of the first throttling device based on the outdoor heat exchanger temperature and the initial ambient temperature includes:

[0094] Step S201: When the temperature difference between the initial ambient temperature and the outdoor heat exchanger temperature is greater than the first preset temperature difference, the first throttling device is controlled to adjust its operating degree according to the reliability status parameters of the heat pump system.

[0095] Step S202: When the temperature difference between the initial ambient temperature and the outdoor heat exchanger temperature is less than or equal to the first preset temperature difference, and when the initial ambient temperature is greater than or equal to the outdoor heat exchanger temperature, the first throttling device is controlled to operate in an unthrottling state.

[0096] The first preset temperature difference is a critical value used to distinguish whether the initial ambient temperature detected by the outdoor temperature sensor is too high.

[0097] The temperature difference between the initial ambient temperature and the outdoor heat exchanger temperature is the calculated result of subtracting the outdoor heat exchanger temperature from the initial ambient temperature.

[0098] State parameters indicating the reliability of a heat pump system include at least one of the following: compressor discharge temperature, refrigerant temperature flowing into the refrigerant heat dissipation module, outdoor heat exchanger temperature, discharge pressure, condensation state parameters of the refrigerant heat dissipation module, etc.

[0099] In this embodiment, the throttling device includes an electronic expansion valve, and the status parameter includes exhaust temperature. When adjusting the operating opening of the electronic expansion valve according to the exhaust temperature, the operating opening is positively correlated with the exhaust temperature; that is, the higher the exhaust temperature, the larger the operating opening. Controlling the first throttling device to operate in an unthrottled state includes controlling the electronic expansion valve to operate at its maximum opening.

[0100] In this embodiment, when the temperature difference is greater than the first preset temperature difference, it indicates that the temperature detected by the outdoor temperature sensor is too high, and the actual ambient temperature is low. At this time, the opening of the first throttling device can be freely adjusted based on the state parameters related to system reliability, which helps to improve the cooling output capacity of the air conditioner while ensuring system reliability. When the temperature difference is less than or equal to the first preset temperature difference and the initial ambient temperature is greater than the outdoor heat exchanger temperature, it indicates that the temperature detected by the outdoor temperature sensor is close to the actual ambient temperature, and the actual ambient temperature is high. At this time, the first throttling device operates in an unthrottling state, which helps to reduce system pressure and reduce the reliability problems caused by excessive pressure, thereby effectively improving system reliability.

[0101] 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. Based on this, please refer to... Figure 5 The step of controlling the compressor operation based on the outdoor heat exchanger temperature and the initial ambient temperature includes:

[0102] Step S21: Determine the target correspondence between the outdoor environment temperature change state and the compressor control parameters based on the outdoor heat exchanger temperature and the initial ambient temperature;

[0103] Different outdoor heat exchanger temperatures and different initial ambient temperatures result in different deviations between the outdoor temperature sensor-detected temperature and the actual ambient temperature, thus leading to different target correspondences.

[0104] The target correspondence can include mapping relationships, relational expressions, and other forms.

[0105] The compressor's control parameters may include at least one of the following: starting the compressor, stopping the compressor, target frequency, frequency adjustment parameters, upper limit frequency, etc. In this embodiment, the control parameters include frequency adjustment parameters.

[0106] In this embodiment, the target correspondence is determined based on the temperature difference between the outdoor heat exchanger temperature and the initial ambient temperature. Different temperature difference values ​​correspond to different target correspondences. In one implementation, the temperature difference range where the temperature difference value lies is determined, and the preset correspondence between the temperature change value corresponding to the temperature difference range and the compressor control parameters is used as the target correspondence. In another implementation, the target correspondence may include a formula, and the calculated coefficient between the temperature change value and the control parameters in the formula can be obtained by calculating the temperature difference value. The target correspondence can be determined based on this calculated coefficient.

[0107] In this embodiment, when the temperature difference between the initial ambient temperature and the outdoor heat exchanger temperature is greater than a first preset temperature difference, a first correspondence is determined as the target correspondence; when the temperature difference between the initial ambient temperature and the outdoor heat exchanger temperature is less than or equal to the first preset temperature difference, and when the initial ambient temperature is greater than or equal to the outdoor heat exchanger temperature, a second correspondence is determined as the target correspondence. The first correspondence includes increasing the compressor frequency when the current ambient temperature is less than the initial ambient temperature, and maintaining the current compressor frequency or decreasing the compressor frequency when the current ambient temperature is greater than or equal to the initial ambient temperature. The second correspondence includes maintaining the current compressor frequency or increasing the compressor frequency when the temperature difference between the current ambient temperature and the initial ambient temperature is less than or equal to a second preset temperature difference, and stopping the compressor or decreasing the compressor frequency when the temperature difference between the current ambient temperature and the initial ambient temperature is greater than the second preset temperature difference. The compressor control parameters include increasing the compressor frequency, decreasing the compressor frequency, stopping the compressor, and maintaining the current compressor frequency.

[0108] The first correspondence and / or the second correspondence may further include the frequency adjustment amplitude or frequency adjustment rate when increasing or decreasing the compressor frequency.

[0109] Step S22: During the operation of the compressor, the temperature change state of the outdoor environment is determined based on the current ambient temperature detected by the outdoor temperature sensor and the initial ambient temperature.

[0110] Temperature change status can include the temperature difference and / or magnitude between the current ambient temperature and the initial ambient temperature.

[0111] In this embodiment, when the duration of compressor operation after startup is greater than or equal to the target duration, the temperature change state of the outdoor environment is determined based on the current ambient temperature detected by the outdoor temperature sensor and the initial ambient temperature.

[0112] Among them, when the temperature difference between the current ambient temperature and the initial ambient temperature is used as the temperature change state, a temperature difference of less than 0 indicates that the temperature detected by the outdoor temperature sensor has dropped due to the outdoor fan being turned on; a temperature difference of more than 0 indicates that the temperature detected by the outdoor temperature sensor has risen due to factors such as the outdoor air temperature rising; and a temperature difference of 0 indicates that the temperature detected by the outdoor temperature sensor has not changed.

[0113] Step S23: Control the compressor to adjust its operating frequency according to the correspondence between the temperature change value and the target.

[0114] When the target correspondence includes the relationship between temperature change value and compressor control parameters, the temperature change value can be substituted into the relationship to calculate the control parameters. When the control parameter is 0, the compressor maintains the current frequency; when the control parameter is negative, the compressor reduces the frequency; and when the control parameter is positive, the compressor increases the frequency.

[0115] The target correspondence includes the mapping relationship between the temperature change value interval and the control parameter. The interval where the temperature change value is located can be determined as the target interval, and the control parameter corresponding to the target interval can be determined as the target control parameter. The compressor can be controlled to adjust its operating frequency according to the target control parameter.

[0116] For example, the target correspondence is the first correspondence mentioned above: when the current ambient temperature is lower than the initial ambient temperature, the compressor is controlled to increase its operating frequency; when the current ambient temperature is greater than or equal to the initial ambient temperature, the compressor is controlled to maintain its current frequency; or, based on the temperature difference between the current ambient temperature and the initial ambient temperature, the target frequency control method is determined between maintaining the current frequency and reducing the frequency of the compressor, and the compressor is controlled to operate using the target frequency control method.

[0117] For example, if the target correspondence is the second correspondence mentioned above, when the temperature difference between the current ambient temperature and the initial ambient temperature is less than or equal to the second preset temperature difference, the compressor is controlled to maintain the current frequency; or, based on the temperature difference between the current ambient temperature and the initial ambient temperature, a target frequency control method is determined between maintaining the current frequency and increasing the compressor frequency, and the compressor is controlled to operate using the target frequency control method. If the initial ambient temperature is greater than the current ambient temperature and the temperature deviation is greater than a preset value, the compressor frequency can be increased; otherwise, the compressor is controlled to maintain the current frequency. If the temperature difference between the current ambient temperature and the initial ambient temperature is greater than the second preset temperature difference, the compressor is controlled to stop; or, based on the temperature difference between the current ambient temperature and the initial ambient temperature, a target frequency control method is determined between stopping the compressor and reducing the compressor frequency, and the compressor is controlled to operate using the target frequency control method.

[0118] In this embodiment, the relationship between the outdoor temperature change value and the compressor control parameters during the subsequent operation of the compressor is determined by first checking whether the temperature detected by the outdoor temperature sensor, which characterizes the initial ambient temperature and the outdoor heat exchanger temperature, is too high. Then, the operation of the compressor is further regulated based on the actual detected outdoor ambient temperature change value. This helps to improve the accuracy of compressor control and achieve an effective balance between ensuring system reliability and cooling effect. A large temperature difference between the initial ambient temperature and the outdoor heat exchanger temperature indicates that the detected outdoor ambient temperature is too high, meaning the actual ambient temperature is low when the compressor starts. As the detected outdoor ambient temperature subsequently decreases, the compressor increases its frequency, improving indoor cooling efficiency while ensuring system reliability. Conversely, if the detected outdoor ambient temperature subsequently rises, it indicates that the actual outdoor temperature is indeed high. In this case, the compressor maintains low-frequency operation or further reduces its frequency to ensure system reliability. A small temperature difference between the initial ambient temperature and the outdoor heat exchanger temperature, with the initial ambient temperature being higher than the outdoor heat exchanger temperature, indicates that the detected outdoor ambient temperature is close to the actual outdoor ambient temperature, meaning the outdoor temperature is high. During subsequent compressor operation, if the detected outdoor ambient temperature does not rise excessively, the compressor maintains low-frequency operation to ensure system reliability under high-temperature conditions. Finally, if the detected outdoor ambient temperature rises excessively during subsequent compressor operation, the compressor shuts down to further protect the system.

[0119] In other embodiments, when the temperature difference between the initial ambient temperature and the outdoor heat exchanger temperature is less than or equal to the first preset temperature difference, and when the initial ambient temperature is greater than or equal to the outdoor heat exchanger temperature, the compressor can maintain operation at a frequency lower than the preset frequency regardless of how the detected outdoor ambient temperature changes.

[0120] In other embodiments, if the temperature difference between the initial ambient temperature and the outdoor heat exchanger temperature is greater than a first preset temperature difference, the compressor may also operate at a frequency greater than a preset frequency.

[0121] In one feasible implementation, when the target correspondence is the first correspondence, the step of controlling the compressor to adjust its operating frequency according to the temperature change value and the target correspondence includes: when the current ambient temperature is lower than the initial ambient temperature, determining the frequency adjustment amplitude based on the relationship between the temperature difference between the initial ambient temperature and the current ambient temperature and the initial ambient temperature; and controlling the compressor to increase its operating frequency according to the frequency adjustment amplitude.

[0122] In this embodiment, the frequency adjustment amplitude is determined based on the relationship between the temperature difference and the initial ambient temperature, as well as the compressor's current operating frequency. Specifically, the ratio of the temperature difference to the initial ambient temperature can be determined, and the product of this ratio and the compressor's current operating frequency can be used as the frequency adjustment amplitude. Alternatively, the difference between the temperature difference and the initial ambient temperature can be determined, and the frequency amplitude corresponding to this difference can be used as the frequency adjustment amplitude.

[0123] In this embodiment, the above method helps to accurately match the compressor frequency increase amplitude with the detected changes in outdoor ambient temperature, avoiding excessive frequency increase from affecting reliability and insufficient frequency increase from affecting cooling effect, thereby achieving an effective balance between system operational reliability and indoor cooling effect.

[0124] In one feasible implementation, the method further includes: determining an upper frequency limit for the compressor based on the outdoor heat exchanger temperature.

[0125] Among them, the outdoor heat exchanger temperature and the upper limit of frequency can be negatively correlated. The higher the outdoor heat exchanger temperature when the compressor is not turned on, the higher the actual room temperature, and the lower the upper limit of frequency.

[0126] When the target correspondence is the first correspondence, after the step of controlling the compressor to adjust its operating frequency according to the temperature change state and the target correspondence, the method further includes: if the compressor's operating frequency does not reach the upper frequency limit, returning to the step of determining the temperature change state of the outdoor environment based on the current ambient temperature detected by the outdoor temperature sensor and the initial ambient temperature during the compressor's operation; and controlling the compressor to maintain operation at the upper frequency limit if the compressor's operating frequency does not reach the upper frequency limit.

[0127] In this embodiment, by means of the above method, within the range of ensuring reliability, the cooling output capacity of the system is gradually increased to the maximum to adapt to the changes in the detected outdoor ambient temperature, thereby ensuring reliability while further improving the cooling effect.

[0128] In one feasible implementation, when the target correspondence is the first correspondence, after the step of determining the temperature change state of the outdoor environment based on the current ambient temperature detected by the outdoor temperature sensor and the initial ambient temperature during the operation of the compressor, the method further includes: when the current ambient temperature is greater than or equal to the initial ambient temperature, controlling the first throttling device to operate in a non-throttling state.

[0129] When the current ambient temperature is greater than or equal to the initial ambient temperature, it can be considered that the actual outdoor temperature is at risk of being too high. In this case, the first throttling device does not throttle, which helps to reduce the system pressure and effectively improve the reliability of system operation.

[0130] In one feasible implementation, before the step of determining the temperature change state of the outdoor environment based on the current ambient temperature detected by the outdoor temperature sensor and the initial ambient temperature during the operation of the compressor, the method further includes: determining a target duration based on the outdoor heat exchanger temperature and the initial ambient temperature; the step of determining the temperature change state of the outdoor environment based on the current ambient temperature detected by the outdoor temperature sensor and the initial ambient temperature during the operation of the compressor includes: determining the temperature change state of the outdoor environment based on the current ambient temperature detected by the outdoor temperature sensor and the initial ambient temperature when the operating time of the compressor after startup is greater than or equal to the target duration.

[0131] The target duration will vary depending on whether the outdoor temperature sensor detects a higher temperature than the outdoor heat exchanger temperature or the initial ambient temperature.

[0132] In this embodiment, the temperature difference between the initial ambient temperature and the outdoor heat exchanger is negatively correlated with the target duration. When the temperature difference between the initial ambient temperature and the outdoor heat exchanger temperature is greater than a first preset temperature difference, a first duration is determined as the target duration. When the temperature difference between the initial ambient temperature and the outdoor heat exchanger temperature is less than or equal to the first preset temperature difference, and the initial ambient temperature is greater than or equal to the outdoor heat exchanger temperature, a second duration is determined as the target duration; wherein the first duration is less than or equal to the second duration.

[0133] In this embodiment, the start time for compressor frequency adjustment is set based on the error between the initial ambient temperature and the temperature detected by the outdoor temperature sensor, which characterizes the outdoor heat exchanger temperature. The target duration is shorter when the detected ambient temperature is higher and longer when the detected ambient temperature is closer to the actual ambient temperature. This helps to further improve the balance between system reliability and cooling effect.

[0134] 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.

[0135] 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.

[0136] 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.

[0137] 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.

[0138] 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 processes: controlling the operation of the heat pump system to put the outdoor heat exchanger in a condensing state and the indoor heat exchanger in an evaporating state; controlling the operation of the first throttling device and / or the compressor based on the outdoor heat exchanger temperature and the outdoor ambient temperature detected by the outdoor temperature sensor of the heat pump system.

[0139] 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).

[0140] 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, which can solve the technical problem of ensuring system reliability and improving the cooling effect of the heat pump system. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in this application are the same as the beneficial effects of the control method of the heat pump system provided in the above embodiments, and will not be repeated here.

[0141] 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.

[0142] 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.

[0143] 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 refrigerant circulation loop of the heat pump system includes a compressor and an indoor heat exchanger, a first throttling device, and an outdoor heat exchanger connected in sequence. The method includes: The heat pump system is controlled to keep the outdoor heat exchanger in a condensing state and the indoor heat exchanger in an evaporating state. The operation of the first throttling device and / or the compressor is controlled based on the outdoor heat exchanger temperature and the outdoor ambient temperature detected by the outdoor temperature sensor of the heat pump system.

2. The method as described in claim 1, characterized in that, The refrigerant circulation loop further includes a refrigerant heat dissipation component and a second throttling device. The first throttling device, the refrigerant heat dissipation module, the first throttling device, and the indoor heat exchanger are connected in sequence. The outdoor heat exchanger temperature is detected when the compressor is not turned on. The temperature detected by the outdoor temperature sensor when the compressor is not turned on is defined as the initial ambient temperature. The step of controlling the operation of the first throttling device based on the outdoor heat exchanger temperature and the outdoor ambient temperature detected by the outdoor temperature sensor of the heat pump system includes: If the temperature difference between the initial ambient temperature and the outdoor heat exchanger temperature is greater than the first preset temperature difference, the first throttling device is controlled to adjust its operating degree according to the reliability status parameters of the heat pump system. When the temperature difference between the initial ambient temperature and the outdoor heat exchanger temperature is less than or equal to the first preset temperature difference, and when the initial ambient temperature is greater than or equal to the outdoor heat exchanger temperature, the first throttling device is controlled to operate in a non-throttling state.

3. The method as described in claim 1, characterized in that, The outdoor heat exchanger temperature is detected when the compressor is not turned on. The temperature detected by the outdoor temperature sensor when the compressor is not turned on is defined as the initial ambient temperature. The step of controlling the compressor operation based on the outdoor heat exchanger temperature and the initial ambient temperature includes: Based on the outdoor heat exchanger temperature and the initial ambient temperature, determine the target correspondence between the outdoor ambient temperature change state and the compressor control parameters; During the operation of the compressor, the temperature change state of the outdoor environment is determined based on the current ambient temperature detected by the outdoor temperature sensor and the initial ambient temperature. The compressor's operating frequency is adjusted based on the temperature change state and the target correspondence.

4. The method as described in claim 3, characterized in that, The step of determining the target correspondence between the outdoor environment temperature change state and the compressor control parameters based on the outdoor heat exchanger temperature and the initial ambient temperature includes: If the temperature difference between the initial ambient temperature and the outdoor heat exchanger temperature is greater than a first preset temperature difference, the first correspondence is determined as the target correspondence; and / or, If the temperature difference between the initial ambient temperature and the outdoor heat exchanger temperature is less than or equal to the first preset temperature difference, and the initial ambient temperature is greater than or equal to the outdoor heat exchanger temperature, then the second correspondence is determined as the target correspondence. The first correspondence includes increasing the compressor frequency when the current ambient temperature is lower than the initial ambient temperature, and maintaining the current frequency or reducing the compressor frequency when the current ambient temperature is greater than or equal to the initial ambient temperature. The second correspondence includes maintaining the current frequency or increasing the compressor frequency when the temperature difference between the current ambient temperature and the initial ambient temperature is less than or equal to a second preset temperature difference, and stopping the compressor or reducing the compressor frequency when the temperature difference between the current ambient temperature and the initial ambient temperature is greater than the second preset temperature difference.

5. The method as described in claim 4, characterized in that, When the target correspondence is the first correspondence, the step of controlling the compressor to adjust its operating frequency according to the temperature change state and the target correspondence includes: When the current ambient temperature is lower than the initial ambient temperature, the frequency adjustment amplitude is determined based on the relationship between the temperature difference between the initial ambient temperature and the current ambient temperature and the initial ambient temperature. The compressor is controlled to increase its operating frequency by adjusting the amplitude according to the frequency.

6. The method as described in claim 4, characterized in that, The method further includes: The upper limit of the compressor frequency is determined based on the temperature of the outdoor heat exchanger. When the target correspondence is the first correspondence, after the step of controlling the compressor to adjust its operating frequency according to the temperature change state and the target correspondence, the method further includes: If the operating frequency of the compressor does not reach the upper limit of the frequency, return to the step of determining the temperature change state of the outdoor environment based on the current ambient temperature detected by the outdoor temperature sensor and the initial ambient temperature during the operation of the compressor; If the operating frequency of the compressor does not reach the upper frequency limit, the compressor is controlled to maintain operation at the upper frequency limit.

7. The method as described in claim 4, characterized in that, When the target correspondence is the first correspondence, after the step of determining the temperature change state of the outdoor environment based on the current ambient temperature detected by the outdoor temperature sensor and the initial ambient temperature during the operation of the compressor, the method further includes: When the current ambient temperature is greater than or equal to the initial ambient temperature, the first throttling device is controlled to operate in an unthrottling state.

8. The method as described in claim 3, characterized in that, Before the step of determining the temperature change state of the outdoor environment based on the current ambient temperature detected by the outdoor temperature sensor and the initial ambient temperature during the operation of the compressor, the method further includes: The target duration is determined based on the outdoor heat exchanger temperature and the initial ambient temperature. The step of determining the temperature change state of the outdoor environment based on the current ambient temperature detected by the outdoor temperature sensor and the initial ambient temperature during the operation of the compressor includes: If the operating time of the compressor after startup is greater than or equal to the target duration, the temperature change state of the outdoor environment is determined based on the current ambient temperature detected by the outdoor temperature sensor and the initial ambient temperature.

9. The method as described in claim 8, characterized in that, The step of determining the target duration based on the outdoor heat exchanger temperature and the initial ambient temperature includes: If the temperature difference between the initial ambient temperature and the outdoor heat exchanger temperature is greater than a first preset temperature difference, the first duration is determined as the target duration. If the temperature difference between the initial ambient temperature and the outdoor heat exchanger temperature is less than or equal to the first preset temperature difference, and the initial ambient temperature is greater than or equal to the outdoor heat exchanger temperature, then the second duration is determined as the target duration. Wherein, the first duration is less than or equal to the second duration.

10. The method according to any one of claims 1 to 9, characterized in that, The initial ambient temperature is defined as the temperature detected by the outdoor temperature sensor when the compressor is not turned on. Following the step of controlling the heat pump system to operate so that the outdoor heat exchanger is in a condensing state and the indoor heat exchanger is in an evaporating state, the system further includes: If the initial ambient temperature is higher than the preset ambient temperature, the step of controlling the operation of the first throttling device and / or the compressor based on the outdoor ambient temperature detected by the outdoor temperature sensor of the heat pump system is executed.

11. The method as described in claim 10, characterized in that, Before the step of controlling the operation of the first throttling device and / or the compressor based on the outdoor heat exchanger temperature and the outdoor ambient temperature detected by the outdoor temperature sensor of the heat pump system, the method further includes: When the initial ambient temperature is higher than the preset ambient temperature, the compressor is controlled to operate at a frequency lower than the preset frequency.

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 an indoor heat exchanger, a first throttling device, and an outdoor heat exchanger connected in sequence. Both the first throttling device and the compressor are 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.

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