Heat pump system control method, temperature regulation device and readable storage medium

Abstract

The present application provides a heat pump system control method, temperature regulating device and readable storage medium. The method includes: obtaining the working parameter set of the heat pump system and the target working mode of the heat pump system; determining the target flow rate of the target throttling device for delivering refrigerant corresponding to the target working mode in the heat pump system according to the preset algorithm and the indoor comprehensive temperature in the working parameter set, the current temperature and current pressure at the outlet of the indoor heat exchanger in the heat pump system; and controlling the target throttling device to deliver the refrigerant at the target flow rate. In this solution, by detecting the indoor comprehensive temperature, the current temperature and current pressure at the outlet of the indoor heat exchanger, the target flow rate of the target throttling device for delivering the refrigerant can be determined, and then the target throttling device is controlled to deliver the refrigerant at the target flow rate. In this way, precise control of the heat pump system can be achieved under the target working mode, which is conducive to improving heat exchange efficiency and user experience.

Description

Technical Field

[0001] The present application relates to the field of heat pump control, and more specifically, to a heat pump system control method, a temperature regulating device, and a readable storage medium. Background Art

[0002] In the field of thermal management, heat pump systems offer a more energy-efficient alternative to boilers and air conditioners for temperature regulation when appropriate cooling or heating is required. However, due to limitations in their system architecture, heat pump systems typically roughly adjust temperature based on the difference between the setpoint and the current room temperature, resulting in limited accuracy and low heat exchange efficiency. Summary of the Invention

[0003] The purpose of the embodiments of the present application is to provide a heat pump system control method, a temperature regulation device and a readable storage medium, which can accurately control the heat pump system and help improve the heat exchange efficiency.

[0004] In order to achieve the above objectives, the embodiments of the present application are implemented in the following manner:

[0005] In a first aspect, an embodiment of the present application provides a heat pump system control method, the method comprising:

[0006] Obtaining an operating parameter set of a heat pump system and a target operating mode of the heat pump system;

[0007] determining a target flow rate of refrigerant delivered by a target throttling device in the heat pump system corresponding to the target operating mode based on a preset algorithm, the indoor integrated temperature in the operating parameter set, and the current temperature and current pressure at the outlet of the indoor heat exchanger in the heat pump system;

[0008] The target throttling device is controlled to deliver the refrigerant at the target flow rate.

[0009] In the above-mentioned embodiment, by detecting the comprehensive indoor temperature, the current temperature and the current pressure at the outlet of the indoor heat exchanger, the target flow rate of the refrigerant delivered by the target throttling device can be determined, and then the target throttling device is controlled to deliver the refrigerant at the target flow rate. In this way, precise control of the heat pump system can be achieved under the target working mode, which is beneficial to improving the heat exchange efficiency and user experience.

[0010] In conjunction with the first aspect, in some optional embodiments, the heat pump system includes a compressor, an indoor heat exchanger, an outdoor heat exchanger, and a first common rail pipeline, wherein the inlet of each heat exchanger is selectively connected to the outlet of the compressor or to the outlet throttle of the first common rail pipeline, and the outlet of each heat exchanger is selectively connected to the inlet of the compressor or to the inlet of the first common rail pipeline;

[0011] In cooling mode, the outlet of the compressor is connected to the inlet of the outdoor heat exchanger, the outlet of the outdoor heat exchanger is connected to the inlet of the first common rail pipeline, the outlet of the first common rail pipeline is connected to the inlet of the indoor heat exchanger through the target throttling device, the outlet of the indoor heat exchanger is connected to the inlet of the compressor, and the target throttling device is a throttling device in the heat pump system provided between the outlet of the first common rail pipeline and the inlet of the indoor heat exchanger;

[0012] Determining a target flow rate of refrigerant delivered by a target throttling device in the heat pump system corresponding to the target operating mode based on a preset algorithm, the indoor integrated temperature in the operating parameter set, and the current temperature and current pressure at the outlet of the indoor heat exchanger in the heat pump system, including:

[0013] When the target operating mode is the cooling mode, determining a target superheat temperature corresponding to the current temperature and the current pressure based on a correspondence between temperature, pressure, and the superheat temperature of the indoor heat exchanger;

[0014] The target flow rate of the refrigerant delivered by the target throttling device is determined according to a first preset formula, wherein the first preset formula is:

[0015]

[0016] In the first preset formula, PWM ij refers to the target flow rate;

[0017] PWM cal Refers to the flow rate to be corrected;

[0018] d refers to the first preset coefficient;

[0019] e refers to the second preset coefficient;

[0020] T B refers to the target superheat temperature;

[0021] T Bset Refers to setting the superheat temperature;

[0022] T D Refers to the comprehensive indoor temperature;

[0023] T set Refers to the set temperature.

[0024] In the above embodiment, in the cooling mode, the target flow rate of the refrigerant delivered by the target throttling device can be accurately calculated through the first preset formula, and then the target throttling device is controlled to deliver the refrigerant at the target flow rate, so that the heat pump system can be accurately controlled in the cooling mode, which is conducive to precise temperature regulation.

[0025] In conjunction with the first aspect, in some optional embodiments, the heat pump system includes a compressor, an indoor heat exchanger, an outdoor heat exchanger, and a first common rail pipeline, wherein the inlet of each heat exchanger is selectively connected to the outlet of the compressor or to the outlet throttle of the first common rail pipeline, and the outlet of each heat exchanger is selectively connected to the inlet of the compressor or to the inlet of the first common rail pipeline;

[0026] In the heating mode, the outlet of the compressor is connected to the inlet of the indoor heat exchanger, the outlet of the indoor heat exchanger is connected to the inlet of the first common rail pipeline, the outlet of the first common rail pipeline is connected to the inlet of the outdoor heat exchanger through the target throttling device, the outlet of the outdoor heat exchanger is connected to the inlet of the compressor, and the target throttling device is a throttling device in the heat pump system provided between the outlet of the first common rail pipeline and the inlet of the outdoor heat exchanger;

[0027] Determining a target flow rate of refrigerant delivered by a target throttling device in the heat pump system corresponding to the target operating mode based on a preset algorithm, the indoor integrated temperature in the operating parameter set, and the current temperature and current pressure at the outlet of the indoor heat exchanger in the heat pump system, including:

[0028] When the target operating mode is the heating mode, determining a target subcooling temperature corresponding to the current temperature and the current pressure based on a correspondence between temperature, pressure, and the subcooling temperature of the indoor heat exchanger;

[0029] The target flow rate of the refrigerant delivered by the target throttling device is determined according to a second preset formula, wherein the second preset formula is:

[0030]

[0031] Among them, in the second preset formula, PWM ij refers to the target flow rate;

[0032] PWM cal Refers to the flow rate to be corrected;

[0033] d refers to the first preset coefficient;

[0034] e refers to the second preset coefficient;

[0035] T L refers to the target subcooling temperature;

[0036] T Lset Refers to setting the subcooling temperature;

[0037] T D Refers to the comprehensive indoor temperature;

[0038] T set Refers to the set temperature.

[0039] In the above embodiment, in the heating mode, the target flow rate of the refrigerant delivered by the target throttling device can be accurately calculated through the second preset formula, so that the heat pump system can be accurately controlled in the heating mode, which is conducive to accurate temperature regulation.

[0040] In combination with the first aspect, in some optional embodiments, the number of the indoor heat exchanger is one, and the number of the outdoor heat exchanger is multiple;

[0041] Obtaining a target operating mode of the heat pump system includes:

[0042] obtaining temperatures of a plurality of outdoor heat exchangers in the operating parameter set;

[0043] When the temperatures of the plurality of outdoor heat exchangers meet a preset defrosting condition, determining that the target operating mode is a heating and defrosting mode;

[0044] In the heating and defrosting mode, the outlet of the compressor is respectively connected to the inlet of the indoor heat exchanger and the inlet of part of the outdoor heat exchanger, the outlet of part of the outdoor heat exchanger and the outlet of the indoor heat exchanger are connected to the inlet of the first common rail pipeline, the outlet of the first common rail pipeline and the inlet of another part of the outdoor heat exchanger are throttlingly connected through the target throttling device, the outlet of the other part of the outdoor heat exchanger is connected to the inlet of the compressor, and the target throttling device is a throttling device in the heat pump system arranged between the outlet of the first common rail pipeline and the other part of the outdoor heat exchanger.

[0045] In the above-mentioned embodiment, by detecting whether the outdoor heat exchanger meets the defrost conditions and operating in the heating defrost mode when the defrost conditions are met, the existing frost on the outdoor heat exchanger can be removed, or the outdoor heat exchanger can be heated in advance before it is about to frost to avoid frost on the outdoor heat exchanger.

[0046] In conjunction with the first aspect, in some optional implementations, the method further includes:

[0047] When the temperature of any one of the plurality of outdoor heat exchangers is less than or equal to a first preset temperature, it is determined that the preset defrosting condition is satisfied.

[0048] In conjunction with the first aspect, in some optional embodiments, the heat pump system includes a compressor, an indoor heat exchanger, an outdoor heat exchanger, and a first common rail pipeline, the inlet of each heat exchanger selectively communicates with the outlet of the compressor or with the outlet throttle of the first common rail pipeline, the outlet of each heat exchanger selectively communicates with the inlet of the compressor or with the inlet of the first common rail pipeline, the number of the indoor heat exchangers is multiple, and the number of the outdoor heat exchanger is one;

[0049] In the heating and dehumidification mode, the outlet of the compressor is connected to the inlet of part of the indoor heat exchanger, the outlet of part of the indoor heat exchanger is connected to the inlet of the first common rail pipeline, the outlet of the first common rail pipeline is connected to the inlet of another part of the indoor heat exchanger through the first target throttling device, the outlet of the other part of the indoor heat exchanger is connected to the inlet of the compressor, the outlet of the first common rail pipeline is connected to the inlet of the outdoor heat exchanger through the second target throttling device, and the outlet of the outdoor heat exchanger is connected to the inlet of the compressor;

[0050] The first target throttling device is a throttling device in the heat pump system provided between the outlet of the first common rail pipeline and the inlet of the other part of the indoor heat exchanger;

[0051] The second target throttling device is a throttling device in the heat pump system provided between the outlet of the first common rail pipeline and the inlet of the outdoor heat exchanger;

[0052] The target flow rate includes a first target flow rate corresponding to the first target throttling device and a second target flow rate corresponding to the second target throttling device;

[0053] Determining a target flow rate of refrigerant delivered by a target throttling device in the heat pump system corresponding to the target operating mode based on a preset algorithm, the indoor integrated temperature in the operating parameter set, and the current temperature and current pressure at the outlet of the indoor heat exchanger in the heat pump system, including:

[0054] When the target operating mode is the heating and dehumidification mode, determining a target subcooling temperature corresponding to a current temperature and a current pressure at an outlet of a target indoor heat exchanger based on a correspondence between temperature, pressure, and a subcooling temperature of the indoor heat exchanger, wherein the target indoor heat exchanger is an indoor heat exchanger among the multiple indoor heat exchangers that is connected to an outlet of the compressor;

[0055] Determining a target dew point temperature corresponding to the current indoor temperature and the current indoor humidity based on a correspondence between temperature, humidity, and dew point temperature;

[0056] The first target flow rate of the refrigerant delivered by the first target throttling device and the second target flow rate of the refrigerant delivered by the second target throttling device are determined according to a third preset formula. The third preset formula is:

[0057]

[0058] Among them, in the third preset formula, PWM dew refers to the first target flow rate;

[0059] PWM ij refers to the second target flow rate;

[0060] PWM cal Refers to the flow rate to be corrected;

[0061] d refers to the first preset coefficient;

[0062] e refers to the second preset coefficient;

[0063] f refers to the third preset coefficient;

[0064] g refers to the fourth preset coefficient;

[0065] T L refers to the target subcooling temperature;

[0066] T Lset Refers to setting the subcooling temperature;

[0067] T D Refers to the comprehensive indoor temperature;

[0068] T set Refers to the set temperature;

[0069] T dew refers to the target dew point temperature;

[0070] T in refers to the current indoor temperature;

[0071] TH in Refers to the current indoor humidity;

[0072] TH max Refers to the preset maximum humidity.

[0073] In the above embodiment, in the heating and dehumidification mode, the third preset formula can be used to accurately calculate the corresponding target flow rates of the refrigerant delivered by the first target throttling device and the second target throttling device, and then the first target throttling device and the second target throttling device are controlled to deliver the refrigerant at the corresponding target flow rates, so that the heat pump system can be accurately controlled in the heating and dehumidification mode, which is conducive to the precise adjustment of temperature and humidity.

[0074] In conjunction with the first aspect, in some optional embodiments, the heat pump system includes a compressor, an indoor heat exchanger, an outdoor heat exchanger, and a first common rail pipeline, wherein the inlet of each heat exchanger is selectively connected to the outlet of the compressor or to the outlet throttle of the first common rail pipeline, and the outlet of each heat exchanger is selectively connected to the inlet of the compressor or to the inlet of the first common rail pipeline; the number of the indoor heat exchangers is multiple, and the number of the outdoor heat exchangers is multiple;

[0075] In the dehumidification and defrosting mode, the outlet of the compressor is respectively connected to the inlet of part of the indoor heat exchanger and the inlet of part of the outdoor heat exchanger, the outlets of the part of the indoor heat exchanger and the part of the outdoor heat exchanger are connected to the inlet of the first common rail pipeline, the outlet of the first common rail pipeline is throttled and connected to another part of the indoor heat exchanger through the first target throttling device, the outlet of the first common rail pipeline is also throttled and connected to the inlet of another part of the outdoor heat exchanger through the second target throttling device, and the outlets of the other part of the indoor heat exchanger and the other part of the outdoor heat exchanger are connected to the inlet of the compressor;

[0076] The first target throttling device is a throttling device in the heat pump system provided between the outlet of the first common rail pipeline and the inlet of the other part of the indoor heat exchanger;

[0077] The second target throttling device is a throttling device in the heat pump system provided between the outlet of the first common rail pipeline and the inlet of the other part of the outdoor heat exchanger;

[0078] The target flow rate includes a first target flow rate corresponding to the first target throttling device and a second target flow rate corresponding to the second target throttling device;

[0079] Determining a target flow rate of refrigerant delivered by a target throttling device in the heat pump system corresponding to the target operating mode based on a preset algorithm, the indoor integrated temperature in the operating parameter set, and the current temperature and current pressure at the outlet of the indoor heat exchanger in the heat pump system, including:

[0080] When the target operating mode is the dehumidification and defrosting mode, determining a target subcooling temperature corresponding to the current temperature and the current pressure at the outlet of a target indoor heat exchanger based on a correspondence between temperature, pressure, and the subcooling temperature of the indoor heat exchanger, wherein the target indoor heat exchanger is an indoor heat exchanger among the multiple indoor heat exchangers that is connected to the outlet of the compressor;

[0081] Determining a target dew point temperature corresponding to the current indoor temperature and the current indoor humidity based on a correspondence between temperature, humidity, and dew point temperature;

[0082] The first target flow rate of the refrigerant delivered by the first target throttling device and the second target flow rate of the refrigerant delivered by the second target throttling device are determined according to a fourth preset formula. The fourth preset formula is:

[0083]

[0084] Among them, in the fourth preset formula, PWM dew refers to the first target flow rate;

[0085] PWM ij refers to the second target flow rate;

[0086] PWM cal Refers to the flow rate to be corrected;

[0087] d refers to the first preset coefficient;

[0088] e refers to the second preset coefficient;

[0089] f refers to the third preset coefficient;

[0090] g refers to the fourth preset coefficient;

[0091] T L refers to the target subcooling temperature;

[0092] T Lset Refers to setting the subcooling temperature;

[0093] T D Refers to the comprehensive indoor temperature;

[0094] T set Refers to the set temperature;

[0095] T dew refers to the target dew point temperature;

[0096] T in refers to the current indoor temperature;

[0097] TH in Refers to the current indoor humidity;

[0098] TH max Refers to the preset maximum humidity.

[0099] In the above embodiment, in the dehumidification and defrost mode, the fourth preset formula can be used to accurately calculate the corresponding target flow rates of the refrigerant delivered by the first target throttling device and the second target throttling device, and then the first target throttling device and the second target throttling device are controlled to deliver the refrigerant at the corresponding target flow rates, so that the heat pump system can be accurately controlled in the dehumidification and defrost mode, which is conducive to the precise control of humidity and defrost.

[0100] In conjunction with the first aspect, in some optional embodiments, when the target operating mode is the operating mode to be switched to determined from the received mode switching instruction, before controlling the target throttling device to deliver the refrigerant at the target flow rate, the method further includes:

[0101] The heat pump system is controlled to first enter a standby state, and then switch from the standby state to the target operating mode.

[0102] In the above embodiment, when mode switching is required, the heat pump system is controlled to first enter the standby state and then switch to the target working state. In this way, direct mode switching can be avoided, which may cause the refrigerant to have excessive impact on the pipeline, thereby affecting the service life of the heat pump or damaging the heat pump system.

[0103] In a second aspect, the present application further provides a temperature regulating device, including a control module and a heat pump system;

[0104] The control module is used to obtain the operating parameter set of the heat pump system and the target operating mode of the heat pump system;

[0105] The control module is further configured to determine a target flow rate of refrigerant delivered by a target throttling device in the heat pump system corresponding to the target operating mode based on a preset algorithm, the indoor integrated temperature in the operating parameter set, and the current temperature and current pressure at the outlet of the indoor heat exchanger in the heat pump system;

[0106] The control module is further configured to control the target throttling device to deliver the refrigerant at the target flow rate.

[0107] In conjunction with the second aspect, in some optional embodiments, the heat pump system includes a compressor, an indoor heat exchanger, an outdoor heat exchanger, and a first common rail pipeline, wherein the inlet of each heat exchanger is selectively connected to the outlet of the compressor or to the outlet throttle of the first common rail pipeline, and the outlet of each heat exchanger is selectively connected to the inlet of the compressor or to the inlet of the first common rail pipeline;

[0108] In cooling mode, the outlet of the compressor is connected to the inlet of the outdoor heat exchanger, the outlet of the outdoor heat exchanger is connected to the inlet of the first common rail pipeline, the outlet of the first common rail pipeline is connected to the inlet of the indoor heat exchanger through the target throttling device, the outlet of the indoor heat exchanger is connected to the inlet of the compressor, and the target throttling device is a throttling device in the heat pump system provided between the outlet of the first common rail pipeline and the inlet of the indoor heat exchanger;

[0109] The control module is further configured to:

[0110] When the target operating mode is the cooling mode, determining a target superheat temperature corresponding to the current temperature and the current pressure based on a correspondence between temperature, pressure, and the superheat temperature of the indoor heat exchanger;

[0111] The target flow rate of the refrigerant delivered by the target throttling device is determined according to a first preset formula, wherein the first preset formula is:

[0112]

[0113] In the first preset formula, PWM ij refers to the target flow rate;

[0114] PWM cal Refers to the flow rate to be corrected;

[0115] d refers to the first preset coefficient;

[0116] e refers to the second preset coefficient;

[0117] T B refers to the target superheat temperature;

[0118] T Bset Refers to setting the superheat temperature;

[0119] T D Refers to the comprehensive indoor temperature;

[0120] T set Refers to the set temperature.

[0121] In conjunction with the second aspect, in some optional embodiments, the heat pump system includes a compressor, an indoor heat exchanger, an outdoor heat exchanger, and a first common rail pipeline, wherein the inlet of each heat exchanger is selectively connected to the outlet of the compressor or to the outlet throttle of the first common rail pipeline, and the outlet of each heat exchanger is selectively connected to the inlet of the compressor or to the inlet of the first common rail pipeline;

[0122] In the heating mode, the outlet of the compressor is connected to the inlet of the indoor heat exchanger, the outlet of the indoor heat exchanger is connected to the inlet of the first common rail pipeline, the outlet of the first common rail pipeline is connected to the inlet of the outdoor heat exchanger through the target throttling device, the outlet of the outdoor heat exchanger is connected to the inlet of the compressor, and the target throttling device is a throttling device in the heat pump system provided between the outlet of the first common rail pipeline and the inlet of the outdoor heat exchanger;

[0123] The control module is further configured to:

[0124] When the target operating mode is the heating mode, determining a target subcooling temperature corresponding to the current temperature and the current pressure based on a correspondence between temperature, pressure, and the subcooling temperature of the indoor heat exchanger;

[0125] The target flow rate of the refrigerant delivered by the target throttling device is determined according to a second preset formula, wherein the second preset formula is:

[0126]

[0127] Among them, in the second preset formula, PWM ij refers to the target flow rate;

[0128] PWM cal Refers to the flow rate to be corrected;

[0129] d refers to the first preset coefficient;

[0130] e refers to the second preset coefficient;

[0131] T L refers to the target subcooling temperature;

[0132] T Lset Refers to setting the subcooling temperature;

[0133] T D Refers to the comprehensive indoor temperature;

[0134] T set Refers to the set temperature.

[0135] In conjunction with the second aspect, in some optional implementations, the number of the indoor heat exchanger is one, and the number of the outdoor heat exchangers is multiple; and the control module is further configured to:

[0136] obtaining temperatures of a plurality of outdoor heat exchangers in the operating parameter set;

[0137] When the temperatures of the plurality of outdoor heat exchangers meet a preset defrosting condition, determining that the target operating mode is a heating and defrosting mode;

[0138] In the heating and defrosting mode, the outlet of the compressor is respectively connected to the inlet of the indoor heat exchanger and the inlet of part of the outdoor heat exchanger, the outlet of part of the outdoor heat exchanger and the outlet of the indoor heat exchanger are connected to the inlet of the first common rail pipeline, the outlet of the first common rail pipeline and the inlet of another part of the outdoor heat exchanger are throttlingly connected through the target throttling device, the outlet of the other part of the outdoor heat exchanger is connected to the inlet of the compressor, and the target throttling device is a throttling device in the heat pump system arranged between the outlet of the first common rail pipeline and the other part of the outdoor heat exchanger.

[0139] In conjunction with the second aspect, in some optional implementations, the control module is further configured to:

[0140] When the temperature of any one of the plurality of outdoor heat exchangers is less than or equal to a first preset temperature, it is determined that the preset defrosting condition is satisfied.

[0141] In conjunction with the second aspect, in some optional embodiments, the heat pump system includes a compressor, an indoor heat exchanger, an outdoor heat exchanger, and a first common rail pipeline, the inlet of each heat exchanger selectively communicates with the outlet of the compressor or with the outlet throttle of the first common rail pipeline, the outlet of each heat exchanger selectively communicates with the inlet of the compressor or with the inlet of the first common rail pipeline, the number of the indoor heat exchangers is multiple, and the number of the outdoor heat exchanger is one;

[0142] In the heating and dehumidification mode, the outlet of the compressor is connected to the inlet of part of the indoor heat exchanger, the outlet of part of the indoor heat exchanger is connected to the inlet of the first common rail pipeline, the outlet of the first common rail pipeline is connected to the inlet of another part of the indoor heat exchanger through a first target throttling device, the outlet of the other part of the indoor heat exchanger is connected to the inlet of the compressor, the outlet of the first common rail pipeline is connected to the inlet of the outdoor heat exchanger through a second target throttling device, and the outlet of the outdoor heat exchanger is connected to the inlet of the compressor;

[0143] The target flow rate includes a first target flow rate corresponding to the first target throttling device and a second target flow rate corresponding to the second target throttling device;

[0144] The first target throttling device is a throttling device in the heat pump system provided between the outlet of the first common rail pipeline and the inlet of the other part of the indoor heat exchanger;

[0145] The second target throttling device is a throttling device in the heat pump system provided between the outlet of the first common rail pipeline and the inlet of the outdoor heat exchanger;

[0146] The control module is further configured to:

[0147] When the target operating mode is the heating and dehumidification mode, determining a target subcooling temperature corresponding to a current temperature and a current pressure at an outlet of a target indoor heat exchanger based on a correspondence between temperature, pressure, and a subcooling temperature of the indoor heat exchanger, wherein the target indoor heat exchanger is an indoor heat exchanger among the multiple indoor heat exchangers that is connected to an outlet of the compressor;

[0148] Based on the corresponding relationship between temperature, humidity and dew point temperature, determine the target dew point temperature corresponding to the current indoor temperature and the current indoor humidity;

[0149] The first target flow rate of the refrigerant delivered by the first target throttling device and the second target flow rate of the refrigerant delivered by the second target throttling device are determined according to a third preset formula. The third preset formula is:

[0150]

[0151] Among them, in the third preset formula, PWM dew refers to the first target flow rate;

[0152] PWM ij refers to the second target flow rate;

[0153] PWM cal Refers to the flow rate to be corrected;

[0154] d refers to the first preset coefficient;

[0155] e refers to the second preset coefficient;

[0156] f refers to the third preset coefficient;

[0157] g refers to the fourth preset coefficient;

[0158] T L refers to the target subcooling temperature;

[0159] T Lset Refers to setting the subcooling temperature;

[0160] T D Refers to the comprehensive indoor temperature;

[0161] T set Refers to the set temperature;

[0162] T dew refers to the target dew point temperature;

[0163] T in refers to the current indoor temperature;

[0164] TH in Refers to the current indoor humidity;

[0165] TH max Refers to the preset maximum humidity.

[0166] In conjunction with the second aspect, in some optional embodiments, the heat pump system includes a compressor, an indoor heat exchanger, an outdoor heat exchanger, and a first common rail pipeline, wherein the inlet of each heat exchanger is selectively connected to the outlet of the compressor or to the outlet throttle of the first common rail pipeline, and the outlet of each heat exchanger is selectively connected to the inlet of the compressor or to the inlet of the first common rail pipeline; the number of the indoor heat exchangers is multiple, and the number of the outdoor heat exchangers is multiple;

[0167] In the dehumidification and defrosting mode, the outlet of the compressor is respectively connected to the inlet of part of the indoor heat exchanger and the inlet of part of the outdoor heat exchanger, the outlets of the part of the indoor heat exchanger and the part of the outdoor heat exchanger are connected to the inlet of the first common rail pipeline, the outlet of the first common rail pipeline is throttled and connected to another part of the indoor heat exchanger through a first target throttling device, the outlet of the first common rail pipeline is also throttled and connected to the inlet of another part of the outdoor heat exchanger through a second target throttling device, and the outlets of the other part of the indoor heat exchanger and the other part of the outdoor heat exchanger are connected to the inlet of the compressor;

[0168] The target flow rate includes a first target flow rate corresponding to the first target throttling device and a second target flow rate corresponding to the second target throttling device;

[0169] The first target throttling device is a throttling device in the heat pump system provided between the outlet of the first common rail pipeline and the inlet of the other part of the indoor heat exchanger;

[0170] The second target throttling device is a throttling device in the heat pump system provided between the outlet of the first common rail pipeline and the inlet of the other part of the outdoor heat exchanger;

[0171] The control module is further configured to:

[0172] When the target operating mode is the dehumidification and defrosting mode, determining a target subcooling temperature corresponding to the current temperature and the current pressure at the outlet of a target indoor heat exchanger based on a correspondence between temperature, pressure, and the subcooling temperature of the indoor heat exchanger, wherein the target indoor heat exchanger is an indoor heat exchanger among the multiple indoor heat exchangers that is connected to the outlet of the compressor;

[0173] Based on the corresponding relationship between temperature, humidity and dew point temperature, determine the target dew point temperature corresponding to the current indoor temperature and the current indoor humidity;

[0174] The first target flow rate of the refrigerant delivered by the first target throttling device and the second target flow rate of the refrigerant delivered by the second target throttling device are determined according to a fourth preset formula. The fourth preset formula is:

[0175]

[0176] Among them, in the fourth preset formula, PWM dew refers to the first target flow rate;

[0177] PWM ij refers to the second target flow rate;

[0178] PWM cal Refers to the flow rate to be corrected;

[0179] d refers to the first preset coefficient;

[0180] e refers to the second preset coefficient;

[0181] f refers to the third preset coefficient;

[0182] g refers to the fourth preset coefficient;

[0183] T L refers to the target subcooling temperature;

[0184] T Lset Refers to setting the subcooling temperature;

[0185] T D Refers to the comprehensive indoor temperature;

[0186] T set Refers to the set temperature;

[0187] T dew refers to the target dew point temperature;

[0188] T in refers to the current indoor temperature;

[0189] TH in Refers to the current indoor humidity;

[0190] TH max Refers to the preset maximum humidity.

[0191] In conjunction with the second aspect, in some optional embodiments, when the target operating mode is the operating mode to be switched determined from the received mode switching instruction, before the control module controls the target throttling device to deliver the refrigerant at the target flow rate, the control module is further configured to:

[0192] The heat pump system is controlled to first enter a standby state, and then switch from the standby state to the target operating mode.

[0193] In a third aspect, the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is run on a computer, the computer executes the above method. BRIEF DESCRIPTION OF THE DRAWINGS

[0194] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0195] Figure 1 A flow chart of a heat pump system control method provided in an embodiment of the present application.

[0196] Figure 2 This is one of the schematic diagrams of the refrigerant flow in the cooling mode of the heat pump system provided in an embodiment of the present application.

[0197] Figure 3 This is one of the schematic diagrams of the refrigerant flow in the heat pump system in the heating mode provided in an embodiment of the present application.

[0198] Figure 4 This is one of the schematic diagrams of the refrigerant flow in the dehumidification mode of the heat pump system provided in an embodiment of the present application.

[0199] Figure 5 This is one of the schematic diagrams of the refrigerant flow in the defrost mode of the heat pump system provided in an embodiment of the present application.

[0200] Figure 6 A schematic diagram of the refrigerant flow direction of the heat pump system provided in an embodiment of the present application in the dehumidification and defrosting mode.

[0201] Figure 7 This is the second schematic diagram of the refrigerant flow in the cooling mode of the heat pump system provided in an embodiment of the present application.

[0202] Figure 8 This is the second schematic diagram of the refrigerant flow in the heat pump system in the heating mode provided in an embodiment of the present application.

[0203] Figure 9 This is the second schematic diagram of the refrigerant flow in the dehumidification mode of the heat pump system provided in an embodiment of the present application.

[0204] Figure 10 This is the second schematic diagram of the refrigerant flow direction of the heat pump system in the defrost mode provided in an embodiment of the present application.

[0205] Icons: 10-heat pump system; 20-compressor; 31-second common rail pipeline; 33-first common rail pipeline; 34-third common rail pipeline; 46-check valve; 50-indoor heat exchange assembly; 51-first indoor heat exchanger; 52-second indoor heat exchanger; 60-outdoor heat exchange assembly; 61-first outdoor heat exchanger; 62-second outdoor heat exchanger; 71-indoor fan; 72-outdoor fan; 110-first inlet valve assembly; 111-first inlet; 112-second inlet; 113-outlet; 120-second inlet valve assembly; 121-first inlet; 122-second inlet; 123-outlet; 130-third Inlet valve assembly; 131-first inlet; 132-second inlet; 133-outlet; 140-fourth inlet valve assembly; 141-first inlet; 142-second inlet; 143-outlet; 210-first outlet valve assembly; 211-inlet; 212-first outlet; 213-second outlet; 220-second outlet valve assembly; 221-inlet; 222-first outlet; 223-second outlet; 230-third outlet valve assembly; 231-inlet; 232-first outlet; 233-second outlet; 240-fourth outlet valve assembly; 241-inlet; 242-first outlet; 243-second outlet. DETAILED DESCRIPTION

[0206] The following describes the technical solutions in the embodiments of the present application in conjunction with the accompanying drawings. It should be noted that the terms "first" and "second" are used only to distinguish descriptions and should not be understood as indicating or implying relative importance. The following embodiments and features in the embodiments may be combined with each other unless there is a conflict.

[0207] First embodiment

[0208] The present application provides a temperature regulation device, including a control module and a heat pump system. The control module is used to accurately control the heat pump system to execute the steps in the following heat pump system control method, thereby facilitating improving heat exchange efficiency.

[0209] The control module is configured to obtain a set of operating parameters for the heat pump system and a target for the heat pump system. The temperature control device and heat pump system can be used in vehicles, homes, ships, and other fields for temperature control. The framework structure of the heat pump system can be flexibly determined based on actual circumstances. For details, see the framework structure of the heat pump system described in the implementation of the following method.

[0210] Please refer to Figure 1 and Figure 2 The present application also provides a heat pump system control method, which can be applied to the above-mentioned control module, and the control module executes or implements each step of the method. Figures 2 to 10The arrows shown in the figure are the flow directions of the refrigerant in the corresponding target working mode, and the refrigerant can be selected according to the actual situation. The method may include the following steps:

[0211] Step S310, obtaining an operating parameter set of the heat pump system 10 and a target operating mode of the heat pump system 10;

[0212] Step S320, determining a target flow rate of refrigerant delivered by a target throttling device in the heat pump system 10 corresponding to the target operating mode based on a preset algorithm, the indoor integrated temperature in the operating parameter set, and the current temperature and pressure at the outlet of the indoor heat exchanger in the heat pump system 10;

[0213] Step S330: Control the target throttling device to deliver refrigerant at the target flow rate.

[0214] In the above-mentioned embodiment, by detecting the comprehensive indoor temperature, the current temperature and the current pressure at the outlet of the indoor heat exchanger, the target flow rate of the refrigerant delivered by the target throttling device can be determined, and then the target throttling device is controlled to deliver the refrigerant at the target flow rate. In this way, precise control of the heat pump system 10 can be achieved under the target working mode, which is beneficial to improving the heat exchange efficiency and user experience.

[0215] The following is a detailed description of each step in the method:

[0216] In step S310, the sensor assembly may collect data from corresponding parts of the heat pump system 10 to obtain an operating parameter set for the heat pump system 10. The operating parameter set includes, but is not limited to, data such as indoor temperature, indoor humidity, and the temperature and pressure at the outlet of the indoor heat exchanger. Furthermore, the operating parameter set may also include user-defined data, such as a set indoor temperature, a preset maximum humidity, and a set subcooling temperature and a set superheating temperature for the heat exchanger.

[0217] It is understandable that the sensing components may include but are not limited to indoor temperature sensors, outdoor temperature sensors, heat exchanger temperature sensors, temperature and humidity sensors, light sensors, pressure sensors, and loop temperature sensors.

[0218] The number of each sensor in the sensing assembly can be determined according to actual conditions, and the location of the sensor can be flexibly determined. For example, when the heat pump system 10 is applied to a vehicle, the indoor temperature sensor can be set in the vehicle's cab to detect the temperature of the interior environment (e.g., air) so as to regulate the temperature inside the vehicle; the outdoor temperature sensor can be set outside the vehicle's cab to detect the outdoor temperature. The temperature and humidity sensor can be set in the cab to detect the indoor temperature and humidity so as to regulate the temperature and humidity inside the cab. For example, the temperature and humidity sensor can be used to detect the humidity of the window glass on the inside of the vehicle's interior to determine whether the glass on the inside is fogged. The light sensor can be set in the cab to detect the light intensity in the cab. The heat exchanger temperature sensor and pressure sensor can be set at the outlet end of the indoor heat exchanger of the heat pump system 10 to detect the temperature at the outlet end and the pressure of the refrigerant.

[0219] The target operating mode may be the current operating mode of the heat pump system 10, such as the heating mode or the cooling mode. Alternatively, the target operating mode may be the operating mode to which the heat pump system 10 is to switch during a mode switching process. For example, when switching from the cooling mode to the heating mode is desired, the target operating mode may be the heating mode.

[0220] In step S320, a preset algorithm can be flexibly determined based on the target operating mode, and is used to determine the target flow rate of the refrigerant delivered by the corresponding target throttling device based on various parameters in the operating parameter set. The target throttling device is used to throttle and expand the refrigerant so that the heat pump system 10 can achieve purposes such as cooling or heating. Among them, the target throttling device can be determined based on the framework structure and target operating mode of the heat pump system 10, and is a throttling device that is required to deliver refrigerant during operation of the heat pump system 10. The throttling device is an electric valve that can achieve throttling injection and can deliver refrigerant in a pulsed injection manner. For example, the throttling device can be a throttling injection valve.

[0221] Among them, the throttle injection valve can deliver refrigerant in the form of pulse injection. It is understandable that the control module can adjust the cumulative injection time of the throttle injection valve spraying refrigerant within a preset time period based on pulse width modulation (PWM), thereby realizing the adjustment of the refrigerant flow rate / flow rate. The flow rate of the refrigerant refers to the average flow rate within the preset time period, and the flow rate of the refrigerant refers to the total flow rate within the preset time period. In this way, using the throttle injection valve to deliver refrigerant is conducive to the precise adjustment of the refrigerant flow rate / flow rate. The cumulative injection time can be understood as: the cumulative total time that the channel of the throttle injection valve is in an open state within the preset time period. Within the preset time period, the throttle injection valve can be opened and closed multiple times, and the switching frequency can be flexibly determined according to actual conditions. In addition, the preset time period can be used as a flow rate adjustment cycle, which can be flexibly determined according to actual conditions and is not specifically limited here.

[0222] In this embodiment, the flow rate of refrigerant delivered by the throttling device is positively correlated with the cumulative injection duration within a preset time period. The longer the cumulative injection duration within the preset time period, the higher the flow rate. The control module can adjust the target cumulative injection duration of refrigerant delivered by the throttling device to adjust the flow rate and flow rate of the delivered refrigerant, thereby adjusting the temperature in cooling or heating modes.

[0223] In step S330, the target throttling device delivers refrigerant at the target flow rate to meet the requirements of the current target operating mode. For example, in cooling or heating mode, the indoor temperature can be ensured to be within a corresponding set range, which can be flexibly set according to actual conditions.

[0224] In this embodiment, the heat pump system 10 may include a compressor 20, an indoor heat exchange assembly 50, an outdoor heat exchange assembly 60, a first common rail line 33, a second common rail line 31, a third common rail line 34, an inlet valve assembly, and an outlet valve assembly, and may form a circuit for circulating refrigerant. The indoor heat exchange assembly 50 may include one or more indoor heat exchangers, and the outdoor heat exchange assembly 60 may include one or more outdoor heat exchangers, each heat exchanger corresponding to an inlet valve assembly and an outlet valve assembly. The number of heat exchangers, inlet valve assemblies, and outlet valve assemblies can be flexibly determined and is not specifically limited herein.

[0225] Each inlet valve assembly includes a first flow passage device and a throttling device, and each outlet valve assembly includes a first flow passage device and a second flow passage device. The first flow passage device, the second flow passage device, and the throttling device can each open or close the corresponding valve channel under the control of the control module. The first flow passage device and the second flow passage device can be the same or different. For example, the first flow passage device can be, but is not limited to, a shutoff valve. The second flow passage device can be, but is not limited to, a one-way valve. The throttling device can be, but is not limited to, a throttling injection valve.

[0226] As an optional implementation, please refer to Figure 2 In the heat pump system 10, the indoor heat exchange assembly 50 is a first indoor heat exchanger 51, and the outdoor heat exchange assembly 60 is a first outdoor heat exchanger 61. The inlet of each heat exchanger is selectively connected to the outlet of the compressor 20 or the outlet throttle of the first common rail line 33, and the outlet of each heat exchanger is selectively connected to the inlet of the compressor 20 or the inlet of the first common rail line 33.

[0227] It can be understood that the outlet of the compressor 20 is connected to the inlet of the second common rail pipeline 31, the first inlet 111 of the first inlet valve assembly 110 and the first inlet 131 of the third inlet valve assembly 130 are both connected to the second common rail pipeline 31, and the second inlet 112 of the first inlet valve assembly 110 and the second inlet 132 of the third inlet valve assembly 130 are both connected to the first common rail pipeline 33.

[0228] The outlet 113 of the first inlet valve assembly 110 communicates with the inlet of the first indoor heat exchanger 51, the outlet of the first indoor heat exchanger 51 communicates with the inlet 211 of the first outlet valve assembly 210, the first outlet 212 of the first outlet valve assembly 210 communicates with the first common rail line 33, and the second outlet 213 of the first outlet valve assembly 210 communicates with the third common rail line 34. The outlet of the third common rail line 34 communicates with the inlet of the compressor 20.

[0229] The outlet 133 of the third inlet valve assembly 130 is connected to the inlet of the first outdoor heat exchanger 61, the outlet of the first outdoor heat exchanger 61 is connected to the inlet 231 of the third outlet valve assembly 230, the first outlet 232 of the third outlet valve assembly 230 is connected to the first common rail pipeline 33, and the second outlet 233 of the third outlet valve assembly 230 is connected to the third common rail pipeline 34.

[0230] The first flow passage device is provided between the first inlet 111 and the outlet 113 of the first inlet valve assembly 110, for controlling the opening or closing of the passage between the first inlet 111 and the outlet 113. The throttling device is provided between the second inlet 112 and the outlet 113 of the first inlet valve assembly 110.

[0231] The second flow-through device is provided between the inlet 211 and the first outlet 212 of the first outlet valve assembly 210, and is used to control the opening or closing of the passage between the inlet 211 and the first outlet 212. The first flow-through device is provided between the inlet 211 and the second outlet 213 of the first outlet valve assembly 210.

[0232] The first flow-through device is provided between the first inlet 131 and the outlet 133 of the third inlet valve assembly 130 to control the opening or closing of the passage between the first inlet 131 and the outlet 133. The throttling device is provided between the second inlet 132 and the outlet 133 of the third inlet valve assembly 130.

[0233] The second flow-through device is provided between the inlet 231 and the first outlet 232 of the third outlet valve assembly 230 to control the opening or closing of the passage between the inlet 231 and the first outlet 232. The first flow-through device is provided between the inlet 231 and the second outlet 233 of the third outlet valve assembly 230.

[0234] In the cooling mode, the outlet of the compressor 20 is connected to the inlet of the outdoor heat exchanger, the outlet of the outdoor heat exchanger is connected to the inlet of the first common rail pipeline 33, the outlet of the first common rail pipeline 33 is connected to the inlet of the indoor heat exchanger through the target throttling device, and the outlet of the indoor heat exchanger is connected to the inlet of the compressor 20. The target throttling device is a throttling device in the first inlet valve assembly 110 of the heat pump system 10, which is arranged between the outlet of the first common rail pipeline 33 and the inlet of the indoor heat exchanger.

[0235] It can be understood that in the cooling mode, the control module can control various valve components to be in a state corresponding to the cooling mode.

[0236] For example, in the first inlet valve assembly 110 , the first flow-through device between the first inlet 111 and the outlet 113 closes the passage, and the throttling device between the second inlet 112 and the outlet 113 is in an open state.

[0237] In the first outlet valve assembly 210, the second flow-through device between the inlet 211 and the first outlet 212 is in a closed state to close the passage between the inlet 211 and the first outlet 212. The first flow-through device between the inlet 211 and the second outlet 213 is in an open state to open the passage between the inlet 211 and the second outlet 213.

[0238] In the third inlet valve assembly 130 , the first flow-through device between the first inlet 131 and the outlet 133 opens a passage, and the throttling device between the second inlet 132 and the outlet 133 is in a closed state.

[0239] In the third outlet valve assembly 230, the second flow-through device between the inlet 231 and the first outlet 232 is in an open state to open the passage between the inlet 231 and the first outlet 232. The first flow-through device between the inlet 231 and the second outlet 233 is in a closed state to close the passage between the inlet 231 and the second outlet 233.

[0240] Please refer again Figure 2 , in the refrigeration process of the heat pump system 10, the process of realizing the refrigeration cycle is:

[0241] The low-temperature, low-pressure refrigerant enters the inlet of the compressor 20 and becomes a high-temperature, high-pressure refrigerant after being compressed by the compressor 20. The high-temperature, high-pressure refrigerant flows into the second common rail pipeline 31 from the outlet of the compressor 20; then, it is transported to the inlet of the first outdoor heat exchanger 61 through the third inlet valve assembly 130, and part of the heat of the refrigerant is released by the first outdoor heat exchanger 61. It is then output from the outlet of the first outdoor heat exchanger 61 to the first common rail pipeline 33 through the third outlet valve assembly 230; then, it passes through the throttling device of the first inlet valve assembly 110. The refrigerant is delivered to the first indoor heat exchanger 51 in a pulsed injection manner. During the delivery of the refrigerant to the first indoor heat exchanger 51, the high-temperature, high-pressure refrigerant undergoes throttling expansion (for example, the high-temperature liquid refrigerant is atomized and / or vaporized after throttling expansion, resulting in the refrigerant temperature being much lower than the ambient temperature). Heat from the external environment (such as air) is absorbed through the first indoor heat exchanger 51. At this time, the air, which has been cooled due to the absorption of heat, is blown into the room by the indoor fan 71, thereby achieving indoor cooling. Furthermore, the throttled and expanded refrigerant in the first indoor heat exchanger 51 is output to the third common rail line 34 via the first outlet valve assembly 210. At this time, the refrigerant in the third common rail line 34 is at a low temperature and low pressure. Finally, the refrigerant is delivered to the inlet of the compressor 20 via the third common rail line 34, completing a refrigeration cycle. The next refrigeration cycle will then be carried out during subsequent cooling, which will not be described in detail here.

[0242] In the cooling process, it is necessary to calculate the target flow rate of refrigerant delivered by the target throttling device. Figure 2 In the heat pump system 10 shown, step S320 may include:

[0243] When the target operating mode is the cooling mode, determining a target superheat temperature corresponding to the current temperature and the current pressure based on a correspondence between temperature, pressure, and the superheat temperature of the indoor heat exchanger;

[0244] The target flow rate of the refrigerant delivered by the target throttling device is determined according to a first preset formula, wherein the first preset formula is:

[0245]

[0246] In the first preset formula, PWM ij refers to the target flow rate;

[0247] PWM cal Refers to the flow rate to be corrected;

[0248] d refers to the first preset coefficient, which can be flexibly determined according to actual conditions;

[0249] e refers to the second preset coefficient, which can be flexibly determined according to actual conditions;

[0250] T B Refers to the target superheat temperature;

[0251] T Bset Refers to the set superheat temperature, which can be the superheat temperature of the indoor heat exchanger before the current moment;

[0252] T D Refers to the comprehensive indoor temperature;

[0253] T set Refers to the set temperature, which can be the temperature data set or input by the user and can be flexibly set according to actual conditions.

[0254] Indoor comprehensive temperature T D It can be calculated by the comprehensive temperature calculation formula, the formula is:

[0255] T D =a*T in +b*T out +c*P solar (2)

[0256] In formula (2), a refers to the fifth preset coefficient, b refers to the sixth preset coefficient, and c refers to the seventh preset coefficient, which can all be flexibly determined according to actual conditions;

[0257] T in Refers to the current indoor temperature, which can be collected by the indoor temperature sensor;

[0258] T out Refers to the current outdoor temperature, which can be collected by the outdoor temperature sensor;

[0259] P solar Refers to the current light intensity, which can be collected by the light sensor.

[0260] After calculating the indoor comprehensive temperature, the control module can calculate the flow rate corresponding to the temperature difference based on the difference between the indoor comprehensive temperature and the set temperature expected by the user, which is PWM cal =d*(T set -T D Then, the flow rate is corrected in combination with the target superheat temperature and the set superheat temperature of the indoor heat exchanger. In this way, the target flow rate of the throttling device (i.e., the target throttling device) in the first inlet valve assembly 110 can be obtained, which is PWM ij .

[0261] After obtaining the target flow rate, the control module can control the throttling device in the first inlet valve assembly 110 to deliver refrigerant at the target flow rate to adjust the indoor temperature, ensuring that the difference between the adjusted indoor temperature and the set temperature is within a first preset range. The first preset range can be determined based on actual conditions, and for example, the first preset range can be 0-1°C.

[0262] The control module can pre-store the correspondence between the cumulative injection time of the throttling device within a preset time and the flow rate. When adjusting the flow rate of the refrigerant, the control module can accurately adjust the cumulative injection time of the throttling device within the preset time based on the correspondence to achieve precise adjustment of the flow rate and thus precise adjustment of the temperature. This is conducive to improving the heat exchange efficiency of the heat pump system 10, achieving precise control of the heat pump, and enhancing the user experience.

[0263] When obtaining the target superheat temperature for the indoor heat exchanger, the control module may pre-store a corresponding data table or array. The data table pre-records the correspondence between different temperatures and pressures and the superheat temperature of the indoor heat exchanger. Upon obtaining the current temperature at the outlet of the first indoor heat exchanger 51 and the current refrigerant pressure, the superheat temperature corresponding to these current temperatures and pressures can be obtained through table lookup. This superheat temperature serves as the current target superheat temperature for the first indoor heat exchanger 51.

[0264] Please refer to Figure 3 , the frame structure of the heat pump system 10 in heating mode and Figure 2 The difference is that the flow direction of the refrigerant is different.

[0265] In the heating mode, the outlet of the compressor 20 is connected to the inlet of the indoor heat exchanger, the outlet of the indoor heat exchanger is connected to the inlet of the first common rail pipeline 33, the outlet of the first common rail pipeline 33 is connected to the inlet of the outdoor heat exchanger through the target throttling device, and the outlet of the outdoor heat exchanger is connected to the inlet of the compressor 20. The target throttling device is a throttling device in the heat pump system 10 arranged between the outlet of the first common rail pipeline 33 and the inlet of the outdoor heat exchanger.

[0266] Understandably, in Figure 3 In the heating mode of the heat pump system 10 shown, the control module can control various valve components to be in a switching state corresponding to the heating mode.

[0267] For example, in the first inlet valve assembly 110 , the first flow-through device between the first inlet 111 and the outlet 113 opens the passage, and the throttling device between the second inlet 112 and the outlet 113 is in a closed state;

[0268] In the first outlet valve assembly 210, the second flow-through device between the inlet 211 and the first outlet 212 is in an open state to open the passage between the inlet 211 and the first outlet 212. The first flow-through device between the inlet 211 and the second outlet 213 is in a closed state to close the passage between the inlet 211 and the second outlet 213;

[0269] In the third inlet valve assembly 130 , the first flow-through device between the first inlet 131 and the outlet 133 closes the passage, and the throttling device between the second inlet 132 and the outlet 133 is in an open state;

[0270] In the third outlet valve assembly 230, the second flow-through device between the inlet 231 and the first outlet 232 is in a closed state to close the passage between the inlet 231 and the first outlet 232. The first flow-through device between the inlet 231 and the second outlet 233 is in an open state to open the passage between the inlet 231 and the second outlet 233.

[0271] Please refer again Figure 3 In the heating process of the heat pump system 10, the process of realizing the heating cycle is:

[0272] Low-temperature, low-pressure refrigerant enters the inlet of compressor 20 and, after being compressed by compressor 20, becomes high-temperature, high-pressure refrigerant. This high-temperature, high-pressure refrigerant flows from the outlet of compressor 20 into the second common rail line 31. It is then transported through the first inlet valve assembly 110 to the inlet of the first indoor heat exchanger 51, where it releases heat, warming the external air. The heated air is then blown into the room by the indoor fan 71, thereby achieving indoor heating. The refrigerant is then output from the outlet of the first indoor heat exchanger 51 through the first outlet valve assembly 210 to the first common rail line 33. It is then pulsed through the throttling device of the third inlet valve assembly 130 and transported to the first outdoor heat exchanger 61. During this process, the high-temperature, high-pressure refrigerant undergoes throttling and expansion, thereby absorbing heat from the external environment with the cooperation of the outdoor fan 72. After throttling and expansion, the refrigerant in the first outdoor heat exchanger 61 is output to the third common rail line 34 via the third outlet valve assembly 230. At this point, the refrigerant in the third common rail line 34 is at a low temperature and low pressure. Finally, the refrigerant is delivered to the inlet of the compressor 20 via the third common rail line 34, completing one heating cycle. The next heating cycle begins when heating is performed later, and this process is not further described here.

[0273] During the heating process, the control module may calculate the target flow rate of the refrigerant delivered by the target throttling device. That is, step S320 may include:

[0274] When the target operating mode is the heating mode, determining a target subcooling temperature corresponding to the current temperature and the current pressure based on a correspondence between temperature, pressure, and the subcooling temperature of the indoor heat exchanger;

[0275] The target flow rate of the refrigerant delivered by the target throttling device is determined according to a second preset formula, wherein the second preset formula is:

[0276]

[0277] Among them, in the second preset formula, PWM ij refers to the target flow rate;

[0278] PWM cal Refers to the flow rate to be corrected;

[0279] d refers to the first preset coefficient;

[0280] e refers to the second preset coefficient;

[0281] T L refers to the target subcooling temperature;

[0282] T Lset Refers to setting the subcooling temperature;

[0283] T D Refers to the comprehensive indoor temperature;

[0284] T set Refers to the set temperature.

[0285] In the second preset formula, the indoor comprehensive temperature can be calculated by the above formula (2). After the indoor comprehensive temperature is calculated, the control module can calculate the flow rate corresponding to the temperature difference based on the difference between the indoor comprehensive temperature and the set temperature expected by the user, which is PWM cal =d*(T set -T D Then, the flow rate is corrected in combination with the target subcooling temperature and the set subcooling temperature of the indoor heat exchanger. In this way, the target flow rate of the throttling device (i.e., the target throttling device) in the third inlet valve assembly 130 can be obtained, which is PWM ij .

[0286] After obtaining the target flow rate, the control module can control the throttling device in the third inlet valve assembly 130 to deliver refrigerant at the target flow rate to adjust the indoor comprehensive temperature and ensure that the difference between the adjusted indoor comprehensive temperature and the set temperature is within the first preset range.

[0287] When obtaining the target subcooling temperature of the indoor heat exchanger, the acquisition method is similar to the above-mentioned acquisition of the target subcooling temperature. For example, the control module can pre-store a corresponding data table or array. In the data table, the correspondence between different temperatures, different pressures and the subcooling temperature of the indoor heat exchanger is pre-recorded. When the current temperature of the outlet end of the first indoor heat exchanger 51 and the current pressure of the refrigerant at the outlet end are obtained, the subcooling temperature corresponding to the current temperature and current pressure can be obtained by looking up the table. This subcooling temperature is the current target subcooling temperature of the first indoor heat exchanger 51.

[0288] In the above embodiment, in the heating mode, the target flow rate of the refrigerant delivered by the target throttling device can be accurately calculated through the second preset formula, so that the heat pump system 10 can be accurately controlled in the heating mode, which is conducive to accurate temperature regulation.

[0289] It should be noted that when the frame structure of the heat pump system 10 is different from Figure 2 When controlling the heat pump system 10 , the target throttling device and the target flow rate in step S320 may be determined based on the actual framework structure and working mode of the heat pump system 10 .

[0290] Second embodiment

[0291] Please refer to Figure 4 The heat pump system 10 in the second embodiment has a similar framework structure to that of the heat pump system 10 in the first embodiment, except that, in the second embodiment, the indoor heat exchange assembly 50 further includes a second indoor heat exchanger 52, and the heat pump system 10 further includes a second inlet valve assembly 120 and a second outlet valve assembly 220. The structure of the second inlet valve assembly 120 can be the same as that of the first inlet valve assembly 110, and the structure of the second outlet valve assembly 220 can be the same as that of the first outlet valve assembly 210.

[0292] In the second inlet valve assembly 120, the first inlet 121 is in communication with the second common rail line 31, the second inlet 122 is in communication with the first common rail line 33, and the outlet 123 is in communication with the inlet of the second indoor heat exchanger 52. A first flow-through device is provided between the first inlet 121 and the outlet 123, and a throttling device is provided between the second inlet 122 and the outlet 123.

[0293] In the second outlet valve assembly 220, the inlet 221 is connected to the outlet of the second indoor heat exchanger 52, the first outlet 222 is connected to the first common rail line 33, and the second outlet 223 is connected to the third common rail line 34. A second flow device (such as a one-way valve) is provided between the inlet 221 and the first outlet 222, and a first flow device (such as a stop valve) is provided between the inlet 221 and the second outlet 223.

[0294] In the heating and dehumidification mode, the outlet of the compressor 20 is connected to the inlet of part of the indoor heat exchanger, the outlet of part of the indoor heat exchanger is connected to the inlet of the first common rail pipeline 33, the outlet of the first common rail pipeline 33 is connected to the inlet of another part of the indoor heat exchanger through the first target throttling device, the outlet of the other part of the indoor heat exchanger is connected to the inlet of the compressor 20, the outlet of the first common rail pipeline 33 is connected to the inlet of the outdoor heat exchanger through the second target throttling device, and the outlet of the outdoor heat exchanger is connected to the inlet of the compressor 20.

[0295] The first target throttling device is a throttling device in the heat pump system 10 provided between the outlet of the first common rail pipeline 33 and the inlet of the other part of the indoor heat exchanger;

[0296] The second target throttling device is a throttling device in the heat pump system 10 provided between the outlet of the first common rail pipe 33 and the inlet of the outdoor heat exchanger;

[0297] The target flow rate includes a first target flow rate corresponding to the first target throttling device and a second target flow rate corresponding to the second target throttling device.

[0298] Please refer again Figure 4 During the heating and dehumidification process of the heat pump system 10, the heat exchanger closer to the air duct inlet of the two indoor heat exchangers is used for cooling, and the heat exchanger closer to the air duct outlet is used for heating. The air duct is used to supply air to the room through the indoor fan 71. It can be understood that when the first indoor heat exchanger 51 is closer to the air duct inlet than the second indoor heat exchanger 52, when the ambient temperature is low (for example, the ambient temperature is between 0 and 15°C), when indoor dehumidification is required, the first indoor heat exchanger 51 is used for cooling to condense the water vapor in the air in the air duct to remove some of the water vapor in the air. Then, the indoor fan 71 transports the cooled and dehumidified air to the second indoor heat exchanger 52. The second indoor heat exchanger 52 heats the air in the air duct, and the indoor fan 71 blows the heated and dehumidified air into the room, thereby achieving the purpose of indoor heating and dehumidification. At this time, the first target throttling device is the throttling device provided between the second inlet 112 and the outlet 113 in the first inlet valve assembly 110, and the second target throttling device is the throttling device provided between the second inlet 132 and the outlet 133 in the third inlet valve assembly 130.

[0299] The process of realizing the heating and dehumidification cycle is:

[0300] Low-temperature, low-pressure refrigerant enters the inlet of the compressor 20 and is compressed by the compressor 20, becoming high-temperature, high-pressure refrigerant. This high-temperature, high-pressure refrigerant then flows from the outlet of the compressor 20 into the second common rail 31. It is then transported through the second inlet valve assembly 120 to the inlet of the second indoor heat exchanger 52. The second indoor heat exchanger 52 releases heat from the refrigerant, warming the ambient air. The indoor fan 71 then blows the warmed air into the room, achieving indoor heating. The refrigerant is then output from the outlet of the second indoor heat exchanger 52 through the second outlet valve assembly 220 to the first common rail 33. The refrigerant is then delivered to the first outdoor heat exchanger 61 in a pulsed injection manner through the throttling device of the third inlet valve assembly 130. During this process, the high-temperature, high-pressure refrigerant undergoes throttling and expansion, absorbing heat from the external environment. Furthermore, the refrigerant in the first common rail line 33 is injected into the first indoor heat exchanger 51 through the throttling device of the first inlet valve assembly 110. There, the refrigerant undergoes throttling and expansion, absorbing the heat of the external air, condensing water vapor in the air and achieving dehumidification. The throttled and expanded refrigerant in the first indoor heat exchanger 51 and the first outdoor heat exchanger 61 is then output to the third common rail line 34 via the first outlet valve assembly 210 and the third outlet valve assembly 230, respectively. At this point, the refrigerant in the third common rail line 34 is at a low temperature and low pressure. Finally, the refrigerant is delivered to the inlet of the compressor 20 through the third common rail line 34, completing a heating and dehumidification cycle.

[0301] During the heating and dehumidification process, the control module can calculate the flow rate of the refrigerant delivered by the first target throttling device and the second target throttling device to achieve the purpose of accurately controlling the heating and dehumidification. As an optional embodiment, step S320 may include:

[0302] When the target operating mode is the heating and dehumidification mode, a target subcooling temperature corresponding to the current temperature and current pressure at the outlet of a target indoor heat exchanger is determined based on a correspondence between temperature, pressure, and the subcooling temperature of the indoor heat exchanger. The target indoor heat exchanger is an indoor heat exchanger connected to the outlet of the compressor 20 among the multiple indoor heat exchangers.

[0303] Determining a target dew point temperature corresponding to the current indoor temperature and the current indoor humidity based on a correspondence between temperature, humidity, and dew point temperature;

[0304] The first target flow rate of the refrigerant delivered by the first target throttling device and the second target flow rate of the refrigerant delivered by the second target throttling device are determined according to a third preset formula. The third preset formula is:

[0305]

[0306] Among them, in the third preset formula, PWM dew refers to the first target flow rate;

[0307] PWM ij refers to the second target flow rate;

[0308] PWM cal Refers to the flow rate to be corrected;

[0309] d refers to the first preset coefficient;

[0310] e refers to the second preset coefficient;

[0311] f refers to the third preset coefficient;

[0312] g refers to the fourth preset coefficient;

[0313] T L refers to the target subcooling temperature;

[0314] T Lset Refers to setting the subcooling temperature;

[0315] T D Refers to the comprehensive indoor temperature;

[0316] T set Refers to the set temperature;

[0317] T dew refers to the target dew point temperature;

[0318] T in refers to the current indoor temperature;

[0319] TH in Refers to the current indoor humidity;

[0320] TH max Refers to the preset maximum humidity.

[0321] In the third preset formula, the first preset coefficient, the second preset coefficient, the third preset coefficient and the fourth preset coefficient can all be determined according to actual conditions (for example, obtained through multiple test measurements). The current indoor humidity can be collected by a humidity sensor (or a temperature and humidity sensor). In the dehumidification calculation process, based on the difference between the target dew point temperature and the indoor temperature, and the difference between the indoor humidity and the preset maximum humidity, the target flow rate PWM of the refrigerant transported by the throttling device (i.e., the first target throttling device) in the first inlet valve assembly 110 can be calculated by the above formula (4): dew (That is, the first target flow rate.) The preset maximum humidity can be understood as the maximum suitable humidity value, and can be flexibly set according to actual conditions.

[0322] It should be noted that the control module can adjust the first target flow rate of the first target throttling device based on the humidity data collected by the indoor humidity sensor and the expected humidity data set by the user, so that the difference between the adjusted indoor humidity and the set expected humidity is within a second preset range. The second preset range can be flexibly set according to actual conditions and is not specifically limited here. In this way, the indoor humidity can be precisely controlled to meet user needs and enhance the user experience.

[0323] The dew point temperature refers to the temperature at which air reaches saturation when cooled, while maintaining a constant water vapor content and constant air pressure. This refers to the temperature at which water vapor and water reach equilibrium. Dew point temperature varies at different temperatures and humidities, as is well known to those skilled in the art.

[0324] When obtaining the target indoor dew point temperature, the method is similar to that for obtaining the target subcooling temperature described above. For example, the control module may pre-store a corresponding dew point temperature data table or array. The dew point temperature data table pre-records the corresponding relationships between different temperatures and humidity levels and dew point temperatures. When the current indoor temperature and humidity are obtained, the dew point temperature corresponding to these current indoor temperature and humidity can be obtained by looking up the table. This dew point temperature is then used as the current target dew point temperature.

[0325] In addition, the indoor comprehensive temperature can be calculated by the above formula (2). After the indoor comprehensive temperature is calculated, the control module can calculate the flow rate corresponding to the temperature difference based on the difference between the indoor comprehensive temperature and the set temperature expected by the user, which is PWM. cal =d*(T set -T D Then, the flow rate is corrected in combination with the target subcooling temperature and the set subcooling temperature of the indoor heat exchanger. In this way, the target flow rate (i.e., the second target flow rate) of the throttling device (i.e., the second target throttling device) in the third inlet valve assembly 130 can be obtained, which is PWM ij .

[0326] After obtaining the target flow rate, the control module can control the throttling device in the third inlet valve assembly 130 to deliver refrigerant at the target flow rate to adjust the indoor comprehensive temperature and ensure that the difference between the adjusted indoor comprehensive temperature and the set temperature is within the first preset range.

[0327] When obtaining the target subcooling temperature of the indoor heat exchanger, the acquisition method is similar to the above-mentioned acquisition of the target subcooling temperature. For example, the control module can pre-store a corresponding data table or array. In the data table, the correspondence between different temperatures, different pressures and the subcooling temperature of the indoor heat exchanger is pre-recorded. When the current temperature of the outlet end of the first indoor heat exchanger 51 and the current pressure of the refrigerant at the outlet end are obtained, the subcooling temperature corresponding to the current temperature and current pressure can be obtained by looking up the table. This subcooling temperature is the current target subcooling temperature of the first indoor heat exchanger 51.

[0328] In the above embodiment, in the heating and dehumidification mode, the corresponding target flow rates of the refrigerant delivered by the first target throttling device and the second target throttling device can be accurately calculated through the third preset formula, and then the first target throttling device and the second target throttling device are controlled to deliver the refrigerant at the corresponding target flow rates, so that the heat pump system 10 can be accurately controlled in the heating and dehumidification mode, which is conducive to the precise adjustment of temperature and humidity.

[0329] In other embodiments, the heat pump system 10 may operate only in natural dehumidification mode, that is, dehumidifying the indoor environment while maintaining the same indoor and outdoor temperatures. The dehumidification method is similar to the above-mentioned heating and dehumidification method and will not be repeated here.

[0330] exist Figure 4 Under the structural framework of the heat pump system 10 shown, the control module can also control the heat pump system 10 to enter a heating mode or a cooling mode.

[0331] For example, in the heating mode, the control module controls the switches of the first inlet valve assembly 110, the second inlet valve assembly 120, the third inlet valve assembly 130, the first outlet valve assembly 210, the second outlet valve assembly 220, and the third outlet valve assembly 230 and the flow rate of the target throttle valve, so that the inlet of one or two indoor heat exchangers of the first indoor heat exchanger 51 and the second indoor heat exchanger 52 can be connected to the second common rail pipeline 31, and the outlet of the indoor heat exchanger connected to the second common rail pipeline 31 can be connected to the first common rail pipeline 33; the inlet of the first outdoor heat exchanger 61 is connected to the outlet of the first common rail pipeline 33, and the outlet of the first outdoor heat exchanger 61 is connected to the third common rail pipeline 34. In this way, the indoor heat exchanger connected to the second common rail pipeline 31 can be used to circulate high-temperature and high-pressure refrigerant to heat the room to achieve the heating purpose.

[0332] For another example, in cooling mode, by controlling the switching and flow rate of various valve components, the inlet of the first outdoor heat exchanger 61 can be connected to the outlet of the second common rail pipeline 31, and the outlet of the first outdoor heat exchanger 61 can be connected to the inlet of the first common rail pipeline 33; the inlet of one or both of the first indoor heat exchanger 51 and the second indoor heat exchanger 52 can be connected to the outlet of the first common rail pipeline 33, and the outlet of the indoor heat exchanger connected to the first common rail pipeline 33 can be connected to the third common rail pipeline 34. In this way, the indoor heat exchanger connected to the first common rail pipeline 33 can be used to circulate low-temperature and low-pressure refrigerant to cool the room to achieve the cooling purpose.

[0333] It should be noted that in the second embodiment, in the heating mode, the method for determining the target flow rate of the target throttling device can refer to the method for determining the target flow rate in the heating mode described in the first embodiment. In the cooling mode, the method for determining the target flow rate of the target throttling valve can refer to the method for determining the target flow rate in the cooling mode described in the first embodiment. The control method for the target throttling device can be the same or similar to that of the first embodiment, except that, in the second embodiment, either the first indoor heat exchanger 51 or the second indoor heat exchanger 52 or both can be selected to circulate refrigerant.

[0334] In addition, Figure 4 In the heat pump system 10 shown, the indoor heat exchange assembly 50 can also include a larger number of indoor heat exchangers, for example, a third indoor heat exchanger. In this case, the heat pump system 10 can also include an inlet valve assembly and an outlet valve assembly corresponding to the third indoor heat exchanger. The connection relationship between the inlet valve assembly, the outlet valve assembly, the third indoor heat exchanger, and the common rail pipeline is the same as the connection relationship between a set of first inlet valve assembly 110, first indoor heat exchanger 51, and first outlet valve assembly 210 and the common rail pipeline, and will not be repeated here. In heating or cooling mode, two or more indoor heat exchangers can increase the heat exchange area, which is beneficial to improving the heat exchange efficiency of indoor heating or cooling.

[0335] Third embodiment

[0336] In the heat pump system 10 of the third embodiment, there is one indoor heat exchanger, and there are multiple outdoor heat exchangers. That is, the outdoor heat exchange assembly 60 may include two or more heat exchangers, each corresponding to one inlet valve assembly and one outlet valve assembly. The number of heat exchangers can be flexibly set and is not specifically limited here.

[0337] For example, see Figure 5 The outdoor heat exchange assembly 60 includes a first outdoor heat exchanger 61 and a second outdoor heat exchanger 62 . Figure 5 The heat pump system 10 shown is Figure 3The heat pump system 10 shown has a similar framework structure, except that the outdoor heat exchange assembly 60 further includes a second outdoor heat exchanger 62, and the heat pump system 10 further includes a fourth inlet valve assembly 140 and a fourth outlet valve assembly 240. The structure of the fourth inlet valve assembly 140 can be the same as that of the first inlet valve assembly 110, and the structure of the fourth outlet valve assembly 240 can be the same as that of the first outlet valve assembly 210.

[0338] In the fourth inlet valve assembly 140, the first inlet 141 is in communication with the second common rail line 31, the second inlet 142 is in communication with the first common rail line 33, and the outlet 143 is in communication with the inlet of the second outdoor heat exchanger 62. A first flow-through device is provided between the first inlet 141 and the outlet 143, and a throttling device is provided between the second inlet 142 and the outlet 143.

[0339] In the fourth outlet valve assembly 240, the inlet 241 is connected to the outlet of the second outdoor heat exchanger 62, the first outlet 242 is connected to the first common rail line 33, and the second outlet 243 is connected to the third common rail line 34. A second flow device (such as a one-way valve) is provided between the inlet 241 and the first outlet 242, and a first flow device (such as a stop valve) is provided between the inlet 241 and the second outlet 243.

[0340] When the outdoor heat exchange assembly 60 includes two or more heat exchangers, in the indoor heating mode, if frost is formed in the outdoor heat exchanger, the heat pump system 10 can achieve defrosting without stopping.

[0341] As an optional embodiment, the control module can determine whether it is necessary to enter the defrost mode. For example, obtaining the target operating mode of the heat pump system 10 may include:

[0342] obtaining temperatures of a plurality of outdoor heat exchangers in the operating parameter set;

[0343] When the temperatures of the plurality of outdoor heat exchangers meet a preset defrosting condition, determining that the target operating mode is a heating and defrosting mode;

[0344] In the heating and defrosting mode, the outlet of the compressor 20 is connected to the inlet of the indoor heat exchanger and the inlet of part of the outdoor heat exchanger respectively, the outlet of part of the outdoor heat exchanger and the outlet of the indoor heat exchanger are connected to the inlet of the first common rail pipeline 33, the outlet of the first common rail pipeline 33 and the inlet of another part of the outdoor heat exchanger are throttlingly connected through the target throttling device, the outlet of the other part of the outdoor heat exchanger is connected to the inlet of the compressor 20, and the target throttling device is a throttling device in the heat pump system 10 arranged between the outlet of the first common rail pipeline 33 and the other part of the outdoor heat exchanger.

[0345] The preset defrost conditions can be flexibly determined based on actual conditions. It is understandable that each outdoor heat exchanger can be provided with a corresponding sensor for detecting the temperature of the outdoor heat exchanger and / or the pressure of the refrigerant in the outdoor heat exchanger. The temperature and / or pressure collected by the sensor can be transmitted to the control module. The control module can determine whether the multiple outdoor heat exchangers meet the preset defrost conditions based on temperature, pressure, or both temperature and pressure. As an optional embodiment, the method for determining whether the preset defrost conditions are met can be: when the temperature of any outdoor heat exchanger among the multiple outdoor heat exchangers is less than or equal to a first preset temperature, it is determined that the preset defrost conditions are met. The first preset temperature can be flexibly determined based on actual conditions and can be the critical temperature for frost or slightly higher than the critical temperature for frost (for example, the first preset temperature is 1°C higher than the critical temperature for frost). When using pressure to determine whether the outdoor heat exchanger meets the preset defrost conditions, the judgment method is similar to using temperature to determine whether the outdoor heat exchanger meets the preset defrost conditions, and will not be repeated here.

[0346] It is understandable that when the temperature of one or more of the multiple outdoor heat exchangers is less than or equal to the critical frost temperature, it means that the outdoor heat exchanger has frosted or is about to frost, and the frosted outdoor heat exchanger may cause the heat pump system 10 to not operate normally, so a defrost operation is required. If the first preset temperature is slightly greater than the critical frost temperature, when the temperature of one or more of the multiple outdoor heat exchangers is less than the first preset temperature, it means that the outdoor heat exchanger is about to frost. At this time, the outdoor heat exchanger can be heated to prevent the outdoor heat exchanger from frosting. Based on the above-mentioned first preset temperature, the control module can defrost the frosted outdoor heat exchanger or prevent the outdoor heat exchanger that is about to frost from frosting.

[0347] When the outdoor heat exchanger needs to be defrosted, the indoor heat exchanger is used for heating. Therefore, the heat pump system 10 needs to operate in the heating and defrosting mode.

[0348] Please refer again Figure 5 , assuming that, when determining whether the defrost condition is met, if it is determined that the first outdoor heat exchanger 61 meets the defrost condition and frost is present, the first outdoor heat exchanger 61 is defrosted. In the heating defrost mode, the defrost process can be:

[0349] Low-temperature, low-pressure refrigerant enters the inlet of compressor 20 and, after being compressed by compressor 20, becomes high-temperature, high-pressure refrigerant. This high-temperature, high-pressure refrigerant then flows from the outlet of compressor 20 into the second common rail line 31. It is then transported through the first inlet valve assembly 110 to the inlet of the first indoor heat exchanger 51, where it releases heat to warm the external air. The heated air is then blown into the room by the indoor fan 71, thereby heating the room. Furthermore, the high-temperature, high-pressure refrigerant in the second common rail line 31 is transported through the third inlet valve assembly 130 to the inlet of the first outdoor heat exchanger 61, where it releases heat to warm the first outdoor heat exchanger 61, thereby removing frost from the first outdoor heat exchanger 61.

[0350] Then, the refrigerant is output from the outlet of the first indoor heat exchanger 51 to the first common rail pipeline 33 via the first outlet valve assembly 210, and is output from the outlet of the first outdoor heat exchanger 61 to the first common rail pipeline 33 via the third outlet valve assembly 230; then, the refrigerant in the first common rail pipeline 33 is transported to the second outdoor heat exchanger 62 in a pulse injection manner through the throttling device of the fourth inlet valve assembly 140. In the process of transporting the refrigerant to the second outdoor heat exchanger 62, the high-temperature and high-pressure refrigerant is throttled and expanded, thereby absorbing heat from the external environment with the cooperation of the outdoor fan 72. The refrigerant after throttling and expansion in the second outdoor heat exchanger 62 is output to the third common rail pipeline 34 through the fourth outlet valve assembly 240. At this time, the refrigerant in the third common rail pipeline 34 is in a low-temperature and low-pressure state; finally, the refrigerant is transported to the inlet of the compressor 20 through the third common rail pipeline 34, completing a heating and defrosting cycle. During the defrosting process, the heat pump system 10 can realize the circulation of the refrigerant through the second outdoor heat exchanger 62, thereby achieving defrosting without stopping the machine.

[0351] Among them, the control module can determine whether the first outdoor heat exchanger 61 has completed the defrost operation based on the temperature data collected by the temperature sensor on the outdoor heat exchanger. For example, when the temperature of the outdoor heat exchanger is greater than the second preset temperature, it is determined that the outdoor heat exchanger has completed the defrost operation. The second preset temperature is greater than the first preset temperature, that is, greater than the critical frost temperature, and can be set flexibly. When the defrost operation is completed, the defrost of the first outdoor heat exchanger 61 is stopped, and then it is determined whether other outdoor heat exchangers (such as the second outdoor heat exchanger 62) meet the defrost conditions. When there are still other outdoor heat exchangers that need to be defrosted, the outdoor heat exchangers that meet the defrost conditions are defrosted. When all outdoor heat exchangers do not meet the defrost conditions, at this time, the heat exchanger can directly enter the heating mode without defrosting.

[0352] During the heating process, the control module can calculate the target flow rate of the refrigerant delivered by the target throttling device. The calculation method is the same as the calculation method in the first embodiment under the heating mode, which will not be repeated here.

[0353] exist Figure 5 Under the structural framework of the heat pump system 10 shown, in addition to realizing the above-mentioned non-stop defrosting, the control module can also control the heat pump system 10 to enter a heating mode or a cooling mode.

[0354] For example, in the heating mode, the control module controls the switches of the first inlet valve assembly 110, the third inlet valve assembly 130, the fourth inlet valve assembly 140, the first outlet valve assembly 210, the third outlet valve assembly 230, and the fourth outlet valve assembly 240 and the flow rate of the target throttle valve, so that the inlet of the first indoor heat exchanger 51 is connected to the outlet of the second common rail pipeline 31, the outlet of the first indoor heat exchanger 51 is connected to the first common rail pipeline 33, the inlets of one or two outdoor heat exchangers of the first outdoor heat exchanger 61 and the second outdoor heat exchanger 62 are connected to the first common rail pipeline 33, and the outlet of the outdoor heat exchanger connected to the first common rail pipeline 33 is connected to the third common rail pipeline 34; in this way, the first indoor heat exchanger 51 connected to the second common rail pipeline 31 can be used to circulate high-temperature and high-pressure refrigerant to heat the room to achieve the heating purpose.

[0355] For another example, in cooling mode, by controlling the switching and flow rate of various valve components, the inlets of one or both of the first outdoor heat exchanger 61 and the second outdoor heat exchanger 62 can be connected to the second common rail pipeline 31, and the outlet of the outdoor heat exchanger connected to the second common rail pipeline 31 can be connected to the first common rail pipeline 33; the inlet of the first indoor heat exchanger 51 is connected to the outlet of the first common rail pipeline 33, and the outlet of the first indoor heat exchanger 51 is connected to the third common rail pipeline 34. In this way, the first indoor heat exchanger 51 connected to the first common rail pipeline 33 can be used to circulate low-temperature and low-pressure refrigerant to cool the room to achieve the cooling purpose.

[0356] It should be noted that in the third embodiment, in the heating mode, the method for determining the target flow rate of the target throttling device can refer to the method for determining the target flow rate in the heating mode described in the first embodiment. In the cooling mode, the method for determining the target flow rate of the target throttling valve can refer to the method for determining the target flow rate in the cooling mode described in the first embodiment. The control method for the target throttling device can be the same or similar to that of the first embodiment, except that in the third embodiment, either or both of the first outdoor heat exchanger 61 and the second outdoor heat exchanger 62 can be selected to circulate refrigerant.

[0357] In addition, Figure 5In the illustrated heat pump system 10, the outdoor heat exchange assembly 60 may further include a larger number of outdoor heat exchangers, for example, a third outdoor heat exchanger. In this case, the heat pump system 10 may further include an inlet valve assembly and an outlet valve assembly corresponding to the third outdoor heat exchanger. The connection relationship between the inlet valve assembly, the outlet valve assembly, the third outdoor heat exchanger, and the common rail piping is similar to the connection relationship between a set of third inlet valve assembly 130, the first outdoor heat exchanger 61, and the third outlet valve assembly 230 and the common rail piping, and will not be further described here. In heating or cooling mode, two or more outdoor heat exchangers can increase the heat exchange area, which is beneficial for improving the indoor heating or cooling effect.

[0358] Fourth embodiment

[0359] In the fourth embodiment, the indoor heat exchange assembly 50 may include a plurality of indoor heat exchangers, and the outdoor heat exchange assembly 60 may include a plurality of outdoor heat exchangers, each heat exchanger corresponding to an inlet valve assembly and an outlet valve assembly.

[0360] For example, please refer to Figure 6 The frame structure of the heat pump system 10 in the fourth embodiment is similar to that in the first embodiment. Figure 2 Compared with the heat pump system 10 shown in FIG. 1 , the difference is that, in the fourth embodiment, the indoor heat exchange assembly 50 further includes a second indoor heat exchanger 52, and the outdoor heat exchange assembly 60 further includes a second outdoor heat exchange assembly 60. The heat pump system 10 further includes a second inlet valve assembly 120, a second outlet valve assembly 220, a fourth inlet valve assembly 140, and a fourth outlet valve assembly 240.

[0361] The connection relationship between the second inlet valve assembly 120 and the second outlet valve assembly 220 in the heat pump system 10 refers to the second embodiment, and the connection relationship between the fourth inlet valve assembly 140 and the fourth outlet valve assembly 240 in the heat pump system 10 refers to the third embodiment.

[0362] When there are multiple indoor heat exchangers and multiple outdoor heat exchangers in the heat pump system 10, the working modes of the heat pump system 10 may include a dehumidification and defrost mode in addition to a heating mode, a cooling mode, a heating and dehumidification mode, and a heating and defrost mode.

[0363] In the dehumidification and defrosting mode, the outlet of the compressor 20 is respectively connected to the inlet of part of the indoor heat exchanger and the inlet of part of the outdoor heat exchanger, the outlets of part of the indoor heat exchanger and part of the outdoor heat exchanger are connected to the inlet of the first common rail pipeline 33, the outlet of the first common rail pipeline 33 is throttled and connected to another part of the indoor heat exchanger through the first target throttling device, the outlet of the first common rail pipeline 33 is also throttled and connected to the inlet of another part of the outdoor heat exchanger through the second target throttling device, and the outlets of the other part of the indoor heat exchanger and the other part of the outdoor heat exchanger are connected to the inlet of the compressor 20.

[0364] The first target throttling device is a throttling device in the heat pump system 10 provided between the outlet of the first common rail pipeline 33 and the inlet of the other part of the indoor heat exchanger;

[0365] The second target throttling device is a throttling device in the heat pump system 10 provided between the outlet of the first common rail pipe 33 and the inlet of the other part of the outdoor heat exchanger;

[0366] The target flow rate includes a first target flow rate corresponding to the first target throttling device and a second target flow rate corresponding to the second target throttling device.

[0367] Please refer to Figure 6 In the dehumidification and defrost mode, the implementation process of the heat pump system 10 is a combination of the heating and dehumidification mode described in the second embodiment and the heating and defrost mode described in the third embodiment. Assuming that the first indoor heat exchanger 51 is closer to the air duct inlet than the second indoor heat exchanger 52, and it is determined that the first outdoor heat exchanger 61 meets the frost conditions and is frosted, the first target throttling device is the throttling device disposed between the second inlet 112 and the outlet 113 in the first inlet valve assembly 110, and the second target throttling device is the throttling device disposed between the second inlet 142 and the outlet 143 in the fourth inlet valve assembly 140. The implementation process of the dehumidification and defrost mode can be:

[0368] Low-temperature, low-pressure refrigerant enters the inlet of compressor 20 and, after being compressed by compressor 20, becomes high-temperature, high-pressure refrigerant. This high-temperature, high-pressure refrigerant flows from the outlet of compressor 20 into the second common rail line 31. It is then delivered to the inlet of the second indoor heat exchanger 52 through the second inlet valve assembly 120 and to the inlet of the first outdoor heat exchanger 61 through the third inlet valve assembly 130. The refrigerant releases heat in the second indoor heat exchanger 52, warming the external air. The indoor fan 71 then blows the warmed air into the room, achieving indoor heating. The high-temperature, high-pressure refrigerant in the first outdoor heat exchanger 61 releases heat, removing frost from the first outdoor heat exchanger 61, achieving non-stop defrosting.

[0369] The refrigerant is then output from the outlet of the second indoor heat exchanger 52 and the outlet of the first outdoor heat exchanger 61 via the second outlet valve assembly 220 and the third outlet valve assembly 230, respectively, to the first common rail line 33. The refrigerant in the first common rail line 33 is then pulsed through the throttling device of the fourth inlet valve assembly 140 and delivered to the second outdoor heat exchanger 62. During this process, the high-temperature, high-pressure refrigerant undergoes throttling and expansion, thereby absorbing heat from the external environment. Furthermore, the refrigerant in the first common rail line 33 is also injected into the first indoor heat exchanger 51 through the throttling device of the first inlet valve assembly 110. There, the refrigerant undergoes throttling and expansion, absorbing the heat of the external air, causing water vapor in the air to condense, achieving the purpose of dehumidification. The refrigerant after throttling and expansion in the first indoor heat exchanger 51 and the second outdoor heat exchanger 62 is output to the third common rail pipeline 34 through the first outlet valve assembly 210 and the fourth outlet valve assembly 240, respectively. At this time, the refrigerant in the third common rail pipeline 34 is in a low-temperature and low-pressure state; finally, the refrigerant is transported to the inlet of the compressor 20 through the third common rail pipeline 34, completing a dehumidification and defrosting cycle.

[0370] During the dehumidification and defrosting process, the control module can calculate the flow rate of the refrigerant delivered by the first target throttling device and the second target throttling device to achieve the purpose of accurately controlling the dehumidification and defrosting. As an optional embodiment, step S320 may include:

[0371] When the target operating mode is the dehumidification and defrosting mode, determining a target subcooling temperature corresponding to the current temperature and the current pressure at the outlet of a target indoor heat exchanger based on a correspondence between temperature, pressure, and the subcooling temperature of the indoor heat exchanger, wherein the target indoor heat exchanger is an indoor heat exchanger connected to the outlet of the compressor 20 among the multiple indoor heat exchangers;

[0372] Determining a target dew point temperature corresponding to the current indoor temperature and the current indoor humidity based on a correspondence between temperature, humidity, and dew point temperature;

[0373] The first target flow rate of the refrigerant delivered by the first target throttling device and the second target flow rate of the refrigerant delivered by the second target throttling device are determined according to a fourth preset formula. The fourth preset formula is:

[0374]

[0375] Among them, in the fourth preset formula, PWM dew refers to the first target flow rate;

[0376] PWM ij refers to the second target flow rate;

[0377] PWM cal Refers to the flow rate to be corrected;

[0378] d refers to the first preset coefficient;

[0379] e refers to the second preset coefficient;

[0380] f refers to the third preset coefficient;

[0381] g refers to the fourth preset coefficient;

[0382] T L refers to the target subcooling temperature;

[0383] T Lset Refers to setting the subcooling temperature;

[0384] T D Refers to the comprehensive indoor temperature;

[0385] T set Refers to the set temperature;

[0386] T dew refers to the target dew point temperature;

[0387] T in refers to the current indoor temperature;

[0388] TH in Refers to the current indoor humidity;

[0389] TH max Refers to the preset maximum humidity.

[0390] The calculation method of formula (5) is the same as that of formula (4), which will not be repeated here.

[0391] In the dehumidification and defrost mode, the fourth preset formula can be used to accurately calculate the corresponding target flow rates of the refrigerant delivered by the first target throttling device and the second target throttling device respectively, and then the first target throttling device and the second target throttling device are controlled to deliver the refrigerant at the corresponding target flow rates, so that the heat pump system 10 can be accurately controlled in the dehumidification and defrost mode, which is conducive to the precise control of humidity and defrost.

[0392] exist Figure 6 Under the structural framework of the heat pump system 10 shown in FIG, the heat pump system 10 can not only realize the above-mentioned non-stop defrosting, but the control module can also control the heat pump system 10 to enter the following Figure 7 Cooling mode as shown, or as Figure 8 Heating mode as shown, or as Figure 9 Dehumidification mode as shown, or Figure 10The defrost mode shown in FIG. In the case of multiple indoor heat exchangers and multiple outdoor heat exchangers, the control module can flexibly select corresponding heat exchangers for operation (i.e., the inlet valve assembly and outlet valve assembly of the heat exchanger are selectively connected to the corresponding common rail pipeline to circulate refrigerant) and some heat exchangers for non-operation (i.e., the inlet valve assembly and outlet valve assembly of the heat exchanger are both closed to prevent refrigerant from flowing), thereby achieving flexible control of the heat pump.

[0393] For example, in a scenario with multiple rooms, a heat pump system 10 with multiple indoor heat exchangers and multiple outdoor heat exchangers is deployed, wherein an indoor heat exchanger can be installed in each room. The user can flexibly select the corresponding indoor heat exchanger to operate according to the needs of cooling or heating, and stop the operation of other indoor heat exchangers. In this way, the start and stop control of the indoor heat exchanger can be flexibly realized while sharing the outdoor heat exchange component 60.

[0394] In each of the above embodiments, when the target operating mode is the operating mode to be switched to determined from the received mode switching instruction, before controlling the target throttling device to deliver the refrigerant at the target flow rate, the method further includes:

[0395] The heat pump system 10 is controlled to first enter a standby state and then switch from the standby state to the target operating mode. In the standby mode, the channels of the inlet valve assemblies and outlet valve assemblies connected to all indoor heat exchangers in the heat pump system 10 are closed, and the channels of the inlet valve assemblies and outlet valve assemblies connected to all outdoor heat exchangers are closed (i.e., both the inlet valve assemblies and the outlet valve assemblies are closed). The duration of the standby mode can be flexibly set according to actual conditions and is not specifically limited here.

[0396] For example, when the control module receives a mode switching instruction for switching from heating mode to cooling mode, the control module may first control the heat pump system 10 to enter standby mode from heating mode, and then switch from standby mode to cooling mode. Then, with the target operating mode being cooling mode, the control module opens the corresponding channels of the corresponding inlet valve assembly and outlet valve assembly, thereby achieving the switch from heating mode to cooling mode.

[0397] Please refer again Figure 7 ,exist Figure 7 In the framework of the heat pump system 10 shown, during the switching period from the heating mode to the cooling mode, the channel switch states of the corresponding inlet valve assembly and outlet valve assembly can be as follows:

[0398] First, the control module can control the heat pump system 10 to enter the standby mode from the heating mode. In the standby mode, the first inlet valve assembly 110, the second inlet valve assembly 120, the third inlet valve assembly 130, and the fourth inlet valve assembly 140 are all closed, and the first outlet valve assembly 210, the second outlet valve assembly 220, the third outlet valve assembly 230, and the fourth outlet valve assembly 240 are all closed. Then, the system switches from the standby mode to the cooling mode. In the cooling mode, the opening and closing conditions of the inlet valve assembly and the outlet valve assembly are as follows:

[0399] In the first inlet valve assembly 110, the first flow device between the first inlet 111 and the outlet 113 closes the channel, and the throttling device (such as an injection valve) between the second inlet 112 and the outlet 113 is in an open state, and refrigerant is injected into the first indoor heat exchanger 51 to perform indoor cooling.

[0400] In the first outlet valve assembly 210, the second flow-through device between the inlet 211 and the first outlet 212 is in a closed state to close the passage between the inlet 211 and the first outlet 212. The first flow-through device between the inlet 211 and the second outlet 213 is in an open state to open the passage between the inlet 211 and the second outlet 213.

[0401] In the second inlet valve assembly 120, the first flow device between the first inlet 121 and the outlet 123 closes the channel, and the throttling device between the second inlet 122 and the outlet 123 is in an open state, spraying refrigerant to the second indoor heat exchanger 52 for indoor cooling.

[0402] In the second outlet valve assembly 220, the second flow-through device between the inlet 221 and the first outlet 222 is in a closed state to close the passage between the inlet 221 and the first outlet 222. The first flow-through device between the inlet 221 and the second outlet 223 is in an open state to open the passage between the inlet 221 and the second outlet 223.

[0403] In the third inlet valve assembly 130 , the first flow-through device between the first inlet 131 and the outlet 133 opens a passage, and the throttling device between the second inlet 132 and the outlet 133 is in a closed state.

[0404] In the third outlet valve assembly 230, the second flow-through device between the inlet 231 and the first outlet 232 is in an open state to open the passage between the inlet 231 and the first outlet 232. The first flow-through device between the inlet 231 and the second outlet 233 is in a closed state to close the passage between the inlet 231 and the second outlet 233.

[0405] In the fourth inlet valve assembly 140 , the first flow-through device between the first inlet 141 and the outlet 143 opens a passage, and the throttling device between the second inlet 142 and the outlet 143 is in a closed state.

[0406] In the fourth outlet valve assembly 240, the second flow-through device between the inlet 241 and the first outlet 242 is in an open state to open the passage between the inlet 241 and the first outlet 242. The first flow-through device between the inlet 241 and the second outlet 243 is in a closed state to close the passage between the inlet 241 and the second outlet 243.

[0407] Based on the switch control of the above-mentioned valve assembly channel, the heat pump system 10 can be controlled to switch from heating mode to standby mode, and then from standby mode to cooling mode, thereby realizing mode switching. After entering the cooling mode, the heat pump system 10 collects the corresponding parameters in the cooling mode, and adjusts the flow rate of the throttling device in the first inlet valve assembly 110 and the second inlet valve assembly 120 so that the indoor temperature meets the set temperature input by the user through the panel (or remote control). The processing process of flow rate adjustment can refer to the calculation control process in the cooling mode in the first embodiment. When it is necessary to exit the cooling mode, the heat pump system 10 can be shut down or enter the standby mode.

[0408] In other embodiments, the heat pump system 10 may further include a constant pressure valve or a one-way valve 46 , or include both a constant pressure valve and a one-way valve 46 .

[0409] For example, the constant pressure valve and the check valve 46 can be located between the outlet of the compressor 20 and the inlet of the second common rail line 31. The locations of the constant pressure valve and the check valve 46 can be interchanged and are not specifically limited herein. The constant pressure valve is used to adjust the pressure of the refrigerant released by the compressor 20 to meet the corresponding operating mode. The check valve 46 is used to prevent the refrigerant in the second common rail line 31 from flowing back into the inlet of the compressor 20.

[0410] It should be noted that the heat pump system 10 can close the channels of all valve assemblies and individual valves (such as constant pressure valves and one-way valves 46) during the shutdown process. For example, when the control module of the heat pump system 10 receives a shutdown command, it can control the closure of all channels of the inlet valve assemblies and outlet valve assemblies connected to the inlets and outlets of all indoor heat exchangers, and control the closure of all channels of the inlet valve assemblies and outlet valve assemblies connected to the inlets and outlets of all outdoor heat exchangers, as well as control the closure of channels of individual valves such as one-way valves 46 and constant pressure valves. In addition, during the startup process, the heat pump system 10 can directly enter the target working mode (such as directly entering the heating mode); or, during the startup process, it can first enter the standby mode and then switch from the standby mode to the current target working mode. This is conducive to improving the reliability of the startup operation of the heat pump system 10 and avoiding the existence of unclosed valves in the heat pump system 10 before startup, which affects the normal delivery of the refrigerant and causes the heat pump system 10 to fail to operate normally.

[0411] In the above embodiment, the processing module can be an integrated circuit chip with signal processing capabilities. The above processing module can be a general-purpose processor. For example, the processor can be a central processing unit (CPU), a graphics processing unit (GPU), a network processor (NP), etc.; it can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, which can implement or execute the disclosed methods, steps and logic block diagrams in the embodiments of the present application.

[0412] The storage module may be, but is not limited to, a random access memory, a read-only memory, a programmable read-only memory, an erasable programmable read-only memory, an electrically erasable programmable read-only memory, etc. In this embodiment, the storage module may be used to store operating parameter sets, preset algorithms, etc. Of course, the storage module may also be used to store programs, and the processing module executes the programs after receiving execution instructions.

[0413] It should be noted that those skilled in the art can clearly understand that for the convenience and brevity of description, the specific working process of the control module described above can refer to the corresponding processes of each step in the aforementioned method, and will not be elaborated here.

[0414] The present application also provides a computer-readable storage medium that stores a computer program, which, when executed on a computer, causes the computer to execute the heat pump system control method described in the above embodiment.

[0415] Through the description of the above implementation methods, those skilled in the art can clearly understand that the present application can be implemented through hardware or by means of software plus a necessary general hardware platform. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each implementation scenario of the present application.

[0416] In summary, the present application provides a heat pump system control method, a temperature regulating device, and a readable storage medium. The method includes: obtaining a working parameter set of the heat pump system and a target working mode of the heat pump system; determining a target flow rate of the refrigerant delivered by a target throttling device corresponding to the target working mode in the heat pump system according to a preset algorithm and the indoor comprehensive temperature in the working parameter set, the current temperature and current pressure at the outlet of the indoor heat exchanger in the heat pump system; and controlling the target throttling device to deliver the refrigerant at the target flow rate. In this solution, by detecting the indoor comprehensive temperature, the current temperature and current pressure at the outlet of the indoor heat exchanger, the target flow rate of the refrigerant delivered by the target throttling device can be determined, and then the target throttling device is controlled to deliver the refrigerant at the target flow rate. In this way, precise control of the heat pump system can be achieved under the target working mode, which is beneficial to improving heat exchange efficiency and user experience.

[0417] In the embodiments provided in the present application, it should be understood that the disclosed devices, systems and methods can also be implemented in other ways. The device, system and method embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the systems, methods and computer program products according to the multiple embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of code, and a part of the module, program segment or code includes one or more executable instructions for implementing the specified logical function. It should also be noted that each box in the block diagram and / or flowchart, and the combination of the boxes in the block diagram and / or flowchart can be implemented by a dedicated hardware-based system that performs the specified function or action, or can be implemented by a combination of dedicated hardware and computer instructions. In addition, the functional modules in the various embodiments of the present application can be integrated together to form an independent part, or each module can exist alone, or two or more modules can be integrated to form an independent part.

[0418] The above description is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, various modifications and variations of the present application are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A heat pump system control method, characterized in that: The method comprises: Obtaining an operating parameter set of a heat pump system and a target operating mode of the heat pump system; determining a target flow rate of refrigerant delivered by a target throttling device in the heat pump system corresponding to the target operating mode based on a preset algorithm, the indoor integrated temperature and the set temperature in the operating parameter set, the current temperature and the current pressure at the outlet of the indoor heat exchanger in the heat pump system, and the set temperature; The target throttling device is controlled to deliver the refrigerant at the target flow rate.

2. The method according to claim 1, characterized in that The heat pump system includes a compressor, an indoor heat exchanger, an outdoor heat exchanger and a first common rail pipeline, wherein the inlet of each heat exchanger is selectively connected to the outlet of the compressor or to the outlet throttle of the first common rail pipeline, and the outlet of each heat exchanger is selectively connected to the inlet of the compressor or to the inlet of the first common rail pipeline; In cooling mode, the outlet of the compressor is connected to the inlet of the outdoor heat exchanger, the outlet of the outdoor heat exchanger is connected to the inlet of the first common rail pipeline, the outlet of the first common rail pipeline is connected to the inlet of the indoor heat exchanger through the target throttling device, the outlet of the indoor heat exchanger is connected to the inlet of the compressor, and the target throttling device is a throttling device in the heat pump system provided between the outlet of the first common rail pipeline and the inlet of the indoor heat exchanger; Determining a target flow rate of refrigerant delivered by a target throttling device in the heat pump system corresponding to the target operating mode based on a preset algorithm, the indoor integrated temperature and the set temperature in the operating parameter set, the current temperature and the current pressure at the outlet of the indoor heat exchanger in the heat pump system, and the set temperature, includes: When the target operating mode is the cooling mode, determining a target superheat temperature corresponding to the current temperature and the current pressure based on a correspondence between temperature, pressure, and the superheat temperature of the indoor heat exchanger; The target flow rate of the refrigerant delivered by the target throttling device is determined according to a first preset formula, wherein the first preset formula is: In the first preset formula, refers to the target flow rate; Refers to the flow rate to be corrected; d refers to the first preset coefficient; e refers to the second preset coefficient; refers to the target superheat temperature; Refers to setting the superheat temperature; Refers to the comprehensive indoor temperature; Refers to the set temperature.

3. The method according to claim 1, characterized in that The heat pump system includes a compressor, an indoor heat exchanger, an outdoor heat exchanger and a first common rail pipeline, wherein the inlet of each heat exchanger is selectively connected to the outlet of the compressor or to the outlet throttle of the first common rail pipeline, and the outlet of each heat exchanger is selectively connected to the inlet of the compressor or to the inlet of the first common rail pipeline; In the heating mode, the outlet of the compressor is connected to the inlet of the indoor heat exchanger, the outlet of the indoor heat exchanger is connected to the inlet of the first common rail pipeline, the outlet of the first common rail pipeline is connected to the inlet of the outdoor heat exchanger through the target throttling device, the outlet of the outdoor heat exchanger is connected to the inlet of the compressor, and the target throttling device is a throttling device in the heat pump system provided between the outlet of the first common rail pipeline and the inlet of the outdoor heat exchanger; Determining a target flow rate of refrigerant delivered by a target throttling device in the heat pump system corresponding to the target operating mode based on a preset algorithm, the indoor integrated temperature and the set temperature in the operating parameter set, the current temperature and the current pressure at the outlet of the indoor heat exchanger in the heat pump system, and the set temperature, includes: When the target operating mode is the heating mode, determining a target subcooling temperature corresponding to the current temperature and the current pressure based on a correspondence between temperature, pressure, and the subcooling temperature of the indoor heat exchanger; The target flow rate of the refrigerant delivered by the target throttling device is determined according to a second preset formula, wherein the second preset formula is: Among them, in the second preset formula, refers to the target flow rate; Refers to the flow rate to be corrected; d refers to the first preset coefficient; e refers to the second preset coefficient; refers to the target subcooling temperature; Refers to setting the subcooling temperature; Refers to the comprehensive indoor temperature; Refers to the set temperature.

4. The method according to claim 3, characterized in that The number of the indoor heat exchanger is one, and the number of the outdoor heat exchanger is multiple; Obtaining a target operating mode of the heat pump system includes: obtaining temperatures of a plurality of outdoor heat exchangers in the operating parameter set; When the temperatures of the plurality of outdoor heat exchangers meet a preset defrosting condition, determining that the target operating mode is a heating and defrosting mode; In the heating and defrosting mode, the outlet of the compressor is respectively connected to the inlet of the indoor heat exchanger and the inlet of part of the outdoor heat exchanger, the outlet of part of the outdoor heat exchanger and the outlet of the indoor heat exchanger are connected to the inlet of the first common rail pipeline, the outlet of the first common rail pipeline and the inlet of another part of the outdoor heat exchanger are throttlingly connected through the target throttling device, the outlet of the other part of the outdoor heat exchanger is connected to the inlet of the compressor, and the target throttling device is a throttling device in the heat pump system arranged between the outlet of the first common rail pipeline and the other part of the outdoor heat exchanger.

5. The method according to claim 4, characterized in that The method further comprises: When the temperature of any one of the plurality of outdoor heat exchangers is less than or equal to a first preset temperature, it is determined that the preset defrosting condition is satisfied.

6. The method according to claim 1, wherein The heat pump system includes a compressor, an indoor heat exchanger, an outdoor heat exchanger, and a first common rail pipeline. The inlet of each heat exchanger is selectively connected to the outlet of the compressor or to the outlet throttle of the first common rail pipeline. The outlet of each heat exchanger is selectively connected to the inlet of the compressor or to the inlet of the first common rail pipeline. There are multiple indoor heat exchangers and one outdoor heat exchanger. In the heating and dehumidification mode, the outlet of the compressor is connected to the inlet of part of the indoor heat exchanger, the outlet of part of the indoor heat exchanger is connected to the inlet of the first common rail pipeline, the outlet of the first common rail pipeline is connected to the inlet of another part of the indoor heat exchanger through a first target throttling device, the outlet of the other part of the indoor heat exchanger is connected to the inlet of the compressor, the outlet of the first common rail pipeline is connected to the inlet of the outdoor heat exchanger through a second target throttling device, and the outlet of the outdoor heat exchanger is connected to the inlet of the compressor; The target flow rate includes a first target flow rate corresponding to the first target throttling device and a second target flow rate corresponding to the second target throttling device; The first target throttling device is a throttling device in the heat pump system provided between the outlet of the first common rail pipeline and the inlet of the other part of the indoor heat exchanger; The second target throttling device is a throttling device in the heat pump system provided between the outlet of the first common rail pipeline and the inlet of the outdoor heat exchanger; Determining a target flow rate of refrigerant delivered by a target throttling device in the heat pump system corresponding to the target operating mode based on a preset algorithm, the indoor integrated temperature and the set temperature in the operating parameter set, the current temperature and the current pressure at the outlet of the indoor heat exchanger in the heat pump system, and the set temperature, includes: When the target operating mode is the heating and dehumidification mode, determining a target subcooling temperature corresponding to a current temperature and a current pressure at an outlet of a target indoor heat exchanger based on a correspondence between temperature, pressure, and a subcooling temperature of the indoor heat exchanger, wherein the target indoor heat exchanger is an indoor heat exchanger among the multiple indoor heat exchangers that is connected to an outlet of the compressor; Based on the corresponding relationship between temperature, humidity and dew point temperature, determine the target dew point temperature corresponding to the current indoor temperature and the current indoor humidity; The first target flow rate of the refrigerant delivered by the first target throttling device and the second target flow rate of the refrigerant delivered by the second target throttling device are determined according to a third preset formula. The third preset formula is: Among them, in the third preset formula, refers to the first target flow rate; refers to the second target flow rate; Refers to the flow rate to be corrected; d refers to the first preset coefficient; e refers to the second preset coefficient; f refers to the third preset coefficient; g refers to the fourth preset coefficient; refers to the target subcooling temperature; Refers to setting the subcooling temperature; Refers to the comprehensive indoor temperature; Refers to the set temperature; refers to the target dew point temperature; refers to the current indoor temperature; Refers to the current indoor humidity; Refers to the preset maximum humidity.

7. The method according to claim 1, characterized in that The heat pump system includes a compressor, an indoor heat exchanger, an outdoor heat exchanger, and a first common rail pipeline. The inlet of each heat exchanger is selectively connected to the outlet of the compressor or to the outlet throttle of the first common rail pipeline, and the outlet of each heat exchanger is selectively connected to the inlet of the compressor or to the inlet of the first common rail pipeline. There are multiple indoor heat exchangers and multiple outdoor heat exchangers. In the dehumidification and defrosting mode, the outlet of the compressor is respectively connected to the inlet of part of the indoor heat exchanger and the inlet of part of the outdoor heat exchanger, the outlets of the part of the indoor heat exchanger and the part of the outdoor heat exchanger are connected to the inlet of the first common rail pipeline, the outlet of the first common rail pipeline is throttled and connected to another part of the indoor heat exchanger through a first target throttling device, the outlet of the first common rail pipeline is also throttled and connected to the inlet of another part of the outdoor heat exchanger through a second target throttling device, and the outlets of the other part of the indoor heat exchanger and the other part of the outdoor heat exchanger are connected to the inlet of the compressor; The target flow rate includes a first target flow rate corresponding to the first target throttling device and a second target flow rate corresponding to the second target throttling device; The first target throttling device is a throttling device in the heat pump system provided between the outlet of the first common rail pipeline and the inlet of the other part of the indoor heat exchanger; The second target throttling device is a throttling device in the heat pump system provided between the outlet of the first common rail pipeline and the inlet of the other part of the outdoor heat exchanger; Determining a target flow rate of refrigerant delivered by a target throttling device in the heat pump system corresponding to the target operating mode based on a preset algorithm, the indoor integrated temperature and the set temperature in the operating parameter set, the current temperature and the current pressure at the outlet of the indoor heat exchanger in the heat pump system, and the set temperature, includes: When the target operating mode is the dehumidification and defrosting mode, determining a target subcooling temperature corresponding to the current temperature and the current pressure at the outlet of a target indoor heat exchanger based on a correspondence between temperature, pressure, and the subcooling temperature of the indoor heat exchanger, wherein the target indoor heat exchanger is an indoor heat exchanger among the multiple indoor heat exchangers that is connected to the outlet of the compressor; Based on the corresponding relationship between temperature, humidity and dew point temperature, determine the target dew point temperature corresponding to the current indoor temperature and the current indoor humidity; The first target flow rate of the refrigerant delivered by the first target throttling device and the second target flow rate of the refrigerant delivered by the second target throttling device are determined according to a fourth preset formula. The fourth preset formula is: Among them, in the fourth preset formula, refers to the first target flow rate; refers to the second target flow rate; Refers to the flow rate to be corrected; d refers to the first preset coefficient; e refers to the second preset coefficient; f refers to the third preset coefficient; g refers to the fourth preset coefficient; refers to the target subcooling temperature; Refers to setting the subcooling temperature; Refers to the comprehensive indoor temperature; Refers to the set temperature; refers to the target dew point temperature; refers to the current indoor temperature; Refers to the current indoor humidity; Refers to the preset maximum humidity.

8. The method according to claim 1, characterized in that When the target operating mode is the operating mode to be switched to determined from the received mode switching instruction, before controlling the target throttling device to deliver the refrigerant at the target flow rate, the method further includes: The heat pump system is controlled to first enter a standby state, and then switch from the standby state to the target operating mode.

9. A temperature regulating device, characterized in that: Including control module and heat pump system; The control module is used to obtain the operating parameter set of the heat pump system and the target operating mode of the heat pump system; The control module is further configured to determine a target flow rate of refrigerant delivered by a target throttling device in the heat pump system corresponding to the target operating mode based on a preset algorithm, the indoor integrated temperature and the set temperature in the operating parameter set, the current temperature and the current pressure at the outlet of the indoor heat exchanger in the heat pump system, and the set temperature; The control module is further configured to control the target throttling device to deliver the refrigerant at the target flow rate.

10. The device according to claim 9, characterized in that The heat pump system includes a compressor, an indoor heat exchanger, an outdoor heat exchanger and a first common rail pipeline, wherein the inlet of each heat exchanger is selectively connected to the outlet of the compressor or to the outlet throttle of the first common rail pipeline, and the outlet of each heat exchanger is selectively connected to the inlet of the compressor or to the inlet of the first common rail pipeline; In cooling mode, the outlet of the compressor is connected to the inlet of the outdoor heat exchanger, the outlet of the outdoor heat exchanger is connected to the inlet of the first common rail pipeline, the outlet of the first common rail pipeline is connected to the inlet of the indoor heat exchanger through the target throttling device, the outlet of the indoor heat exchanger is connected to the inlet of the compressor, and the target throttling device is a throttling device in the heat pump system provided between the outlet of the first common rail pipeline and the inlet of the indoor heat exchanger; The control module is further configured to: When the target operating mode is the cooling mode, determining a target superheat temperature corresponding to the current temperature and the current pressure based on a correspondence between temperature, pressure, and the superheat temperature of the indoor heat exchanger; The target flow rate of the refrigerant delivered by the target throttling device is determined according to a first preset formula, wherein the first preset formula is: In the first preset formula, refers to the target flow rate; Refers to the flow rate to be corrected; d refers to the first preset coefficient; e refers to the second preset coefficient; refers to the target superheat temperature; Refers to setting the superheat temperature; Refers to the comprehensive indoor temperature; Refers to the set temperature.

11. The device according to claim 9, characterized in that The heat pump system includes a compressor, an indoor heat exchanger, an outdoor heat exchanger and a first common rail pipeline, wherein the inlet of each heat exchanger is selectively connected to the outlet of the compressor or to the outlet throttle of the first common rail pipeline, and the outlet of each heat exchanger is selectively connected to the inlet of the compressor or to the inlet of the first common rail pipeline; In the heating mode, the outlet of the compressor is connected to the inlet of the indoor heat exchanger, the outlet of the indoor heat exchanger is connected to the inlet of the first common rail pipeline, the outlet of the first common rail pipeline is connected to the inlet of the outdoor heat exchanger through the target throttling device, the outlet of the outdoor heat exchanger is connected to the inlet of the compressor, and the target throttling device is a throttling device in the heat pump system provided between the outlet of the first common rail pipeline and the inlet of the outdoor heat exchanger; The control module is further configured to: When the target operating mode is the heating mode, determining a target subcooling temperature corresponding to the current temperature and the current pressure based on a correspondence between temperature, pressure, and the subcooling temperature of the indoor heat exchanger; The target flow rate of the refrigerant delivered by the target throttling device is determined according to a second preset formula, wherein the second preset formula is: Among them, in the second preset formula, refers to the target flow rate; Refers to the flow rate to be corrected; d refers to the first preset coefficient; e refers to the second preset coefficient; refers to the target subcooling temperature; Refers to setting the subcooling temperature; Refers to the comprehensive indoor temperature; Refers to the set temperature.

12. The device according to claim 11, characterized in that The number of the indoor heat exchanger is one, and the number of the outdoor heat exchanger is multiple; the control module is further used to: obtaining temperatures of a plurality of outdoor heat exchangers in the operating parameter set; When the temperatures of the plurality of outdoor heat exchangers meet a preset defrosting condition, determining that the target operating mode is a heating and defrosting mode; In the heating and defrosting mode, the outlet of the compressor is respectively connected to the inlet of the indoor heat exchanger and the inlet of part of the outdoor heat exchanger, the outlet of part of the outdoor heat exchanger and the outlet of the indoor heat exchanger are connected to the inlet of the first common rail pipeline, the outlet of the first common rail pipeline and the inlet of another part of the outdoor heat exchanger are throttlingly connected through the target throttling device, the outlet of the other part of the outdoor heat exchanger is connected to the inlet of the compressor, and the target throttling device is a throttling device in the heat pump system arranged between the outlet of the first common rail pipeline and the other part of the outdoor heat exchanger.

13. The device according to claim 12, characterized in that The control module is further configured to: When the temperature of any one of the plurality of outdoor heat exchangers is less than or equal to a first preset temperature, it is determined that the preset defrosting condition is satisfied.

14. The device according to claim 9, characterized in that The heat pump system includes a compressor, an indoor heat exchanger, an outdoor heat exchanger, and a first common rail pipeline. The inlet of each heat exchanger is selectively connected to the outlet of the compressor or to the outlet throttle of the first common rail pipeline. The outlet of each heat exchanger is selectively connected to the inlet of the compressor or to the inlet of the first common rail pipeline. There are multiple indoor heat exchangers and one outdoor heat exchanger. In the heating and dehumidification mode, the outlet of the compressor is connected to the inlet of part of the indoor heat exchanger, the outlet of part of the indoor heat exchanger is connected to the inlet of the first common rail pipeline, the outlet of the first common rail pipeline is connected to the inlet of another part of the indoor heat exchanger through a first target throttling device, the outlet of the other part of the indoor heat exchanger is connected to the inlet of the compressor, the outlet of the first common rail pipeline is connected to the inlet of the outdoor heat exchanger through a second target throttling device, and the outlet of the outdoor heat exchanger is connected to the inlet of the compressor; The target flow rate includes a first target flow rate corresponding to the first target throttling device and a second target flow rate corresponding to the second target throttling device; The first target throttling device is a throttling device in the heat pump system provided between the outlet of the first common rail pipeline and the inlet of the other part of the indoor heat exchanger; The second target throttling device is a throttling device in the heat pump system provided between the outlet of the first common rail pipeline and the inlet of the outdoor heat exchanger; The control module is further configured to: When the target operating mode is the heating and dehumidification mode, determining a target subcooling temperature corresponding to a current temperature and a current pressure at an outlet of a target indoor heat exchanger based on a correspondence between temperature, pressure, and a subcooling temperature of the indoor heat exchanger, wherein the target indoor heat exchanger is an indoor heat exchanger among the multiple indoor heat exchangers that is connected to an outlet of the compressor; Based on the corresponding relationship between temperature, humidity and dew point temperature, determine the target dew point temperature corresponding to the current indoor temperature and the current indoor humidity; The first target flow rate of the refrigerant delivered by the first target throttling device and the second target flow rate of the refrigerant delivered by the second target throttling device are determined according to a third preset formula. The third preset formula is: Among them, in the third preset formula, refers to the first target flow rate; refers to the second target flow rate; Refers to the flow rate to be corrected; d refers to the first preset coefficient; e refers to the second preset coefficient; f refers to the third preset coefficient; g refers to the fourth preset coefficient; refers to the target subcooling temperature; Refers to setting the subcooling temperature; Refers to the comprehensive indoor temperature; Refers to the set temperature; refers to the target dew point temperature; refers to the current indoor temperature; Refers to the current indoor humidity; Refers to the preset maximum humidity.

15. The device according to claim 9, characterized in that The heat pump system includes a compressor, an indoor heat exchanger, an outdoor heat exchanger, and a first common rail pipeline. The inlet of each heat exchanger is selectively connected to the outlet of the compressor or to the outlet throttle of the first common rail pipeline, and the outlet of each heat exchanger is selectively connected to the inlet of the compressor or to the inlet of the first common rail pipeline. There are multiple indoor heat exchangers and multiple outdoor heat exchangers. In the dehumidification and defrosting mode, the outlet of the compressor is respectively connected to the inlet of part of the indoor heat exchanger and the inlet of part of the outdoor heat exchanger, the outlets of the part of the indoor heat exchanger and the part of the outdoor heat exchanger are connected to the inlet of the first common rail pipeline, the outlet of the first common rail pipeline is throttled and connected to another part of the indoor heat exchanger through a first target throttling device, the outlet of the first common rail pipeline is also throttled and connected to the inlet of another part of the outdoor heat exchanger through a second target throttling device, and the outlets of the other part of the indoor heat exchanger and the other part of the outdoor heat exchanger are connected to the inlet of the compressor; The target flow rate includes a first target flow rate corresponding to the first target throttling device and a second target flow rate corresponding to the second target throttling device; The first target throttling device is a throttling device in the heat pump system provided between the outlet of the first common rail pipeline and the inlet of the other part of the indoor heat exchanger; The second target throttling device is a throttling device in the heat pump system provided between the outlet of the first common rail pipeline and the inlet of the other part of the outdoor heat exchanger; The control module is further configured to: When the target operating mode is the dehumidification and defrosting mode, determining a target subcooling temperature corresponding to the current temperature and the current pressure at the outlet of a target indoor heat exchanger based on a correspondence between temperature, pressure, and the subcooling temperature of the indoor heat exchanger, wherein the target indoor heat exchanger is an indoor heat exchanger among the multiple indoor heat exchangers that is connected to the outlet of the compressor; Based on the corresponding relationship between temperature, humidity and dew point temperature, determine the target dew point temperature corresponding to the current indoor temperature and the current indoor humidity; The first target flow rate of the refrigerant delivered by the first target throttling device and the second target flow rate of the refrigerant delivered by the second target throttling device are determined according to a fourth preset formula. The fourth preset formula is: Among them, in the fourth preset formula, refers to the first target flow rate; refers to the second target flow rate; Refers to the flow rate to be corrected; d refers to the first preset coefficient; e refers to the second preset coefficient; f refers to the third preset coefficient; g refers to the fourth preset coefficient; refers to the target subcooling temperature; Refers to setting the subcooling temperature; Refers to the comprehensive indoor temperature; Refers to the set temperature; refers to the target dew point temperature; refers to the current indoor temperature; Refers to the current indoor humidity; Refers to the preset maximum humidity.

16. The device according to claim 9, characterized in that When the target operating mode is the operating mode to be switched determined from the received mode switching instruction, before the control module controls the target throttling device to deliver the refrigerant at the target flow rate, the control module is further configured to: The heat pump system is controlled to first enter a standby state, and then switch from the standby state to the target operating mode.

17. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is run on a computer, the computer is caused to execute the method according to any one of claims 1 to 8.

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