Heat pump equipment control method and device, medium and heat pump equipment

Abstract

The invention discloses a heat pump equipment control method and device, a medium and heat pump equipment, and relates to the technical field of heat pumps, the method comprises the steps that low pressure, return air temperature, environment temperature and air humidity are received, and the defrosting ending duration from the last defrosting period is determined; determining an evaporation temperature according to the low pressure; when the evaporation temperature and the air return temperature are both lower than the target temperature and the defrosting ending duration is longer than the target interval duration, the heat pump equipment is controlled to enter a defrosting mode; wherein the target temperature is determined according to the environment temperature and the air humidity, and the target interval duration is determined according to the air humidity. Defrosting can be avoided when no frost exists, so that the energy efficiency is improved, defrosting can be carried out in time, and the defrosting cleanliness is improved.

Description

Technical Field

[0001] The present application relates to the field of heat pump technology, and in particular to a heat pump equipment control method, device, storage medium and heat pump equipment. Background Art

[0002] When heat pump equipment (such as air-source heat pump units or heat pump water heaters) operates in low ambient temperature conditions, frost easily forms on the evaporator (e.g., the finned heat exchanger), reducing heating efficiency. To prevent frost from affecting heating performance, heat pump equipment is typically defrosted according to defrost parameters programmed into the unit's control program.

[0003] According to the current defrosting method, when the environment changes complexly, it is easy to perform defrosting when there is no frost, resulting in energy waste; and it is also easy to fail to detect frost in a timely and accurate manner, resulting in insufficient defrosting. Summary of the Invention

[0004] The embodiment of the present application provides a heat pump equipment control solution, which can effectively avoid defrosting when there is no frost, thereby improving energy efficiency, and improve the timeliness and accuracy of frost detection, thereby improving defrosting cleanliness.

[0005] The embodiments of this application provide the following technical solutions:

[0006] According to one embodiment of the present application, a heat pump device control method includes: receiving low pressure, return air temperature, ambient temperature and air humidity, and determining the defrost end time from the previous defrost cycle; determining the evaporation temperature based on the low pressure; when the evaporation temperature and the return air temperature are both less than the target temperature and the defrost end time is longer than the target interval time, controlling the heat pump device to enter the defrost mode; wherein the target temperature is determined based on the ambient temperature and the air humidity, and the target interval time is determined based on the air humidity.

[0007] In some embodiments of the present application, when the evaporation temperature and the return air temperature are both lower than the target temperature and the defrost end time is longer than the target interval time, before controlling the heat pump device to enter the defrost mode, the method further includes: determining a corresponding reference temperature according to the ambient temperature; determining a corresponding temperature adjustment coefficient according to the air humidity; and calculating the target temperature according to the formula A2=A1+K0*A, wherein A2 refers to the target temperature, A is the first preset temperature, A1 refers to the reference temperature, and K0 refers to the temperature adjustment coefficient.

[0008] In some embodiments of the present application, determining the corresponding reference temperature according to the ambient temperature includes: determining the corresponding reference temperature according to the first curve formula A1=a+S1*T 环Determine the reference temperature, where A1 refers to the reference temperature, a is the second preset temperature, a > 0, S1 is the first preset slope, S1 > 0, and T 环 refers to the ambient temperature.

[0009] In some embodiments of the present application, determining the corresponding temperature adjustment coefficient according to the air humidity includes: determining the temperature adjustment coefficient according to the second curve formula K0 = b + S2*X, where K0 refers to the temperature adjustment coefficient, X refers to the air humidity, S2 is the preset second slope, S2 > 0, b is the preset adjustment coefficient, b > 0; when X is equal to X0, K0 is equal to 0, X0 > 0; S2 when X is less than X0 is less than S2 when X is greater than X0.

[0010] In some embodiments of the present application, before controlling the heat pump device to enter the defrosting mode when the evaporation temperature and the suction gas temperature are both less than the target temperature and the defrosting end duration is greater than the target interval duration, the method further includes: determining the corresponding duration correction coefficient according to the air humidity; calculating the target interval duration according to the formula B2 = K1*B1, where B2 refers to the target interval duration, K1 refers to the duration correction coefficient, and B1 is the preset defrosting interval time.

[0011] In some embodiments of the present application, determining the corresponding duration correction coefficient according to the air humidity includes: determining the duration correction coefficient according to the third curve formula K1 = c + S3*X, where K1 refers to the duration correction coefficient, c is the preset correction coefficient, c > 0; S3 is the preset third slope, S3 < 0; X refers to the air humidity; when X is greater than or equal to X1, K1 is equal to 0, X1 > 0.

[0012] In some embodiments of the present application, determining the evaporation temperature according to the low-pressure pressure includes: determining the refrigerant in the heat pump device; determining the evaporation temperature according to the refrigerant and the low-pressure pressure.

[0013] According to an embodiment of the present application, a heat pump device control device includes: a memory storing a computer program; a processor reading the computer program stored in the memory to execute the method described in the embodiments of the present application.

[0014] According to another embodiment of the present application, a storage medium stores a computer program, and when the computer program is executed by the processor of the heat pump device control device, the heat pump device control device is caused to execute the method described in the embodiments of the present application.

[0015] According to another embodiment of the present application, a heat pump device may include the heat pump device control device described in the embodiments of the present application.

[0016] According to another embodiment of the present application, a computer program product or a computer program, the computer program product or the computer program includes computer instructions, and the computer instructions are stored in a computer-readable storage medium. A processor of the heat pump device control device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the heat pump device control device executes the methods provided in the various alternative implementations described in the embodiments of the present application.

[0017] In the embodiments of the present application, the low-pressure pressure, the return air temperature, the ambient temperature, and the air humidity are received, and the defrosting end duration from the previous defrosting cycle is determined; the evaporation temperature is determined according to the low-pressure pressure; when both the evaporation temperature and the return air temperature are lower than the target temperature and the defrosting end duration is greater than the target interval duration, the heat pump device is controlled to enter the defrosting mode; wherein, the target temperature is determined according to the ambient temperature and the air humidity, and the target interval duration is determined according to the air humidity.

[0018] In this way of the embodiments of the present application, the target temperature and the target interval duration are dynamically determined according to the ambient temperature and the air humidity, and the evaporation temperature is determined according to the low-pressure pressure. In the face of complex environmental changes, when both the evaporation temperature and the return air temperature are lower than the target temperature and the defrosting end duration is greater than the target interval duration, it is possible to timely and accurately determine that the evaporator in the heat pump device is frosted, and then control the heat pump device to enter the defrosting mode, that is, it is possible to avoid defrosting when there is no frost, thereby improving energy efficiency, and it is also possible to perform defrosting in a timely manner, thereby improving the defrosting cleanliness. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0020] Figure 1 Shows a flowchart of a heat pump device control method according to an embodiment of the present application.

[0021] Figure 2 Shows a relationship curve diagram according to an embodiment of the present application.

[0022] Figure 3 Shows a relationship curve diagram according to another embodiment of the present application.

[0023] Figure 4 Shows a relationship curve diagram according to another embodiment of the present application.

[0024] Figure 5A block diagram of a heat pump device control apparatus according to an embodiment of the present application is shown.

[0025] Figure 6 A block diagram of a heat pump device according to an embodiment of the present application is shown. Detailed implementation manners

[0026] The present disclosure will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments provided herein are only used to explain the present disclosure and are not used to limit the present disclosure. In addition, the embodiments provided below are partial embodiments for implementing the present disclosure, rather than all embodiments for implementing the present disclosure. Without conflict, the technical solutions described in the embodiments of the present disclosure can be implemented in any combination.

[0027] It should be noted that, in the embodiments of the present disclosure, the term "comprising", "including" or any other variant thereof is intended to cover a non-exclusive inclusion, so that a method or apparatus including a series of elements not only includes the elements specifically recited, but also includes other elements not explicitly listed, or further includes elements inherent to the implementation of the method or apparatus. Without further limitation, an element defined by the statement "comprising a..." does not exclude the existence of additional related elements in the method or apparatus including the element (for example, steps in a method or units in an apparatus, and the unit can be part of a circuit, part of a processor, part of a program or software, etc.).

[0028] For example, the heat pump device control method provided in the embodiments of the present disclosure includes a series of steps, but the heat pump device control method provided in the embodiments of the present disclosure is not limited to the recited steps. Similarly, the heat pump device control apparatus provided in the embodiments of the present disclosure includes a series of units, but the apparatus provided in the embodiments of the present disclosure is not limited to including the explicitly recited units, and may further include units required for obtaining relevant information or processing based on the information.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this disclosure belongs. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0030] It can be understood that, in the specific implementation manners of the present application, when related data is involved, when the embodiments in the present application are applied to specific products or technologies, user permission or consent is required, and the collection, use and processing of the related data need to comply with relevant laws, regulations and standards.

[0031] Figure 1The flowchart of the control method of the heat pump device according to an embodiment of the present application is schematically shown. The execution subject of the control method of the heat pump device can be a heat pump device control device with processing capabilities. The heat pump device control device can be set in devices such as heat pump devices, mobile phones, computers, smart watches, and other household appliances. The heat pump device control device can at least include a memory and a processor.

[0032] In a specific embodiment of the present application, the heat pump device control device, which is the execution subject of the control method of the heat pump device, is specifically set in the heat pump device. The heat pump device control device can include a processor and a memory. A computer program is stored in the memory, and the processor can read the computer program stored in the memory to execute the methods of the various embodiments of the present application.

[0033] As Figure 1 shown, the control method of the heat pump device can include steps S110 to S130. Among them, the heat pump device can be an air source heat pump unit or a heat pump water heater, etc. The heat pump device can include, but is not limited to, a compressor, a fan, a four-way valve, and an evaporator (such as a fin heat exchanger), etc. Among them, a low-pressure sensor can be set on the suction side of the compressor, and a return air temperature sensor can also be set on the suction side of the compressor. Further, an ambient temperature sensor can be set in the environment where the heat pump device is located. A humidity sensor can be set in the environment where the heat pump device is located. The humidity sensor can be placed at the ventilation position of the heat pump device and not close to the heat-generating parts such as the fin heat exchanger, pipeline, and electronic control module in the heat pump device, and at the same time, avoid direct contact between external water and the humidity sensor, so as to ensure the accuracy of air humidity detection.

[0034] Step S110, receive the low-pressure pressure, return air temperature, ambient temperature, and air humidity, and determine the defrosting end duration since the previous defrosting cycle;

[0035] Step S120, determine the evaporation temperature according to the low-pressure pressure;

[0036] Step S130, when both the evaporation temperature and the return air temperature are less than the target temperature and the defrosting end duration is greater than the target interval duration, control the heat pump device to enter the defrosting mode; among them, the target temperature is determined according to the ambient temperature and the air humidity, and the target interval duration is determined according to the air humidity.

[0037] During the operation of the heat pump device, the low-pressure pressure (P 低 ) can be detected in real time through the low-pressure sensor set on the suction side of the compressor, and the return air temperature (T 回 ) can be detected in real time through the return air temperature sensor set on the suction side of the compressor. The ambient temperature (T 环)。The air humidity (X) can be detected in real time through a humidity sensor. Further, the duration between the "current real-time moment" and the "end moment of the previous defrosting cycle" can be determined in real time, and this duration is the defrosting end duration (t 结束 )。

[0038] According to the low-pressure pressure (P 低 ), the evaporation temperature (T 蒸 ) can be determined. The evaporation temperature (T 蒸 ) is the temperature at which the refrigerant undergoes a phase change (from liquid to gas) in the evaporator. For example, the low-pressure pressure (P 低 ) can be converted into the evaporation temperature (T 蒸 ) by means of looking up a table or calculating through a pre-designed formula.

[0039] Further, according to the ambient temperature (T 环 ) and the air humidity (X), a target temperature (A2) can be determined, and according to the air humidity (X), a target interval duration (B2) can be determined. And it is judged whether both the evaporation temperature (T 蒸 ) and the suction gas temperature (T 回 ) are less than the target temperature (A2) and whether the defrosting end duration (t 结束 ) is greater than the target interval duration (B2).

[0040] When both the evaporation temperature and the suction gas temperature are less than the target temperature (i.e., T 蒸 < A2 and T 回 < A2) and the defrosting end duration is greater than the target interval duration (i.e., t 结束 > B2), it can be timely and accurately judged that there is frosting on the evaporator in the heat pump device, and then the heat pump device is controlled to enter the defrosting mode to defrost the evaporator, that is, it can avoid defrosting when there is no frost and can defrost in time to ensure the defrosting cleanliness.

[0041] Among them, in the defrosting mode, the heat pump device switches to refrigeration operation, the compressor keeps working, the four-way valve switches to the refrigeration direction, and the fan stops running. Then, the high-temperature refrigerant flows into the evaporator (such as a fin heat exchanger) to melt the frost layer on the evaporator. In the heating mode, the heat pump device operates for heating, the compressor keeps working, the four-way valve switches to the heating direction, and the fan runs.

[0042] In summary, in the manner of the embodiments of the present application, the target temperature and the target interval duration are dynamically determined according to the environmental temperature and air humidity, and the evaporation temperature is determined according to the low-pressure pressure. When facing complex environmental changes, when both the evaporation temperature and the suction gas temperature are lower than the target temperature and the defrosting end duration is greater than the target interval duration, it is possible to timely and accurately determine that frosting occurs in the evaporator of the heat pump device, and then control the heat pump device to enter the defrosting mode. That is, it is possible to avoid defrosting when there is no frost, thereby improving energy efficiency, and it is also possible to perform defrosting in a timely manner, thereby improving the defrosting cleanliness.

[0043] The following describes Figure 1 Specific embodiments that are further optional under each step when controlling the heat pump device in the embodiments.

[0044] In one embodiment, before step S130, "when both the evaporation temperature and the suction gas temperature are lower than the target temperature and the defrosting end duration is greater than the target interval duration, control the heat pump device to enter the defrosting mode", the heat pump device control method may further include: determining a corresponding reference temperature according to the environmental temperature; determining a corresponding temperature adjustment coefficient according to the air humidity; calculating the target temperature according to the formula A2 = A1 + K0 * A, where A2 refers to the target temperature, A is the first preset temperature, A1 refers to the reference temperature, and K0 refers to the temperature adjustment coefficient.

[0045] According to different environmental temperatures (T 环 ), the corresponding reference temperature (A1) can be determined respectively, and the reference temperatures (A1) corresponding to different environmental temperatures (T 环 ) are different. According to different air humidities (X), the corresponding temperature adjustment coefficients (K0) can be determined respectively, and the temperature adjustment coefficients (K0) corresponding to different air humidities (X) are different.

[0046] After determining the corresponding reference temperature according to the environmental temperature and the corresponding temperature adjustment coefficient according to the air humidity, the target temperature (A2) is calculated according to the formula A2 = A1 + K0 * A. The applicant finds that when the target temperature calculated in this way is used in the relevant embodiments of the present application, it can further ensure the timeliness and accuracy of determining the frosting situation.

[0047] Optionally, in some other embodiments, the target temperature jointly mapped by the environmental temperature and air humidity can be queried from the preset target temperature mapping table.

[0048] Further, in one embodiment, determining the corresponding reference temperature according to the environmental temperature may specifically include: determining the reference temperature according to the first curve formula A1 = a + S1 * T 环 , where A1 refers to the reference temperature, a is the second preset temperature, a > 0, S1 is the first preset slope, S1 > 0, and T 环 refers to the environmental temperature.

[0049] Refer to Figure 2 , such as Figure 2 showing the first relationship curve 210 between A1 and T 环 , and the first curve formula corresponding to the first relationship curve is A1 = a + S1*T 环 , according to the first curve formula A1 = a + S1*T 环 using the ambient temperature (T 环 ) to determine the reference temperature (A1), when the reference temperature (A1) is used in the relevant embodiments of the present application, the timeliness and accuracy of determining the frosting situation can be further ensured.

[0050] Optionally, in some other embodiments, the reference temperature mapped by the ambient temperature can be queried from a preset reference temperature mapping table.

[0051] Furthermore, in one embodiment, determining the corresponding temperature adjustment coefficient according to the air humidity may include: determining the temperature adjustment coefficient according to the second curve formula K0 = b + S2*X, where K0 refers to the temperature adjustment coefficient, X refers to the air humidity, S2 is a preset second slope, S2 is greater than 0, b is a preset adjustment coefficient, b is greater than 0; when X is equal to X0, K0 is equal to 0, X0 is greater than 0; the S2 when X is less than X0 is less than the S2 when X is greater than X0.

[0052] Refer to Figure 3 , such as Figure 3 showing the second relationship curve 310 between K0 and X, and the second curve formula corresponding to the second relationship curve is K0 = b + S2*X. Using the air humidity (X) to determine the temperature adjustment coefficient (K0) according to the second curve formula K0 = b + S2*X, when the temperature adjustment coefficient (K0) is used in the relevant embodiments of the present application, the timeliness and accuracy of determining the frosting situation can be further ensured.

[0053] Optionally, in some other embodiments, the temperature adjustment coefficient mapped by the air humidity can be queried from a preset adjustment coefficient mapping table.

[0054] In one embodiment, before step S130 "when the evaporation temperature and the suction gas temperature are both less than the target temperature and the defrosting end duration is greater than the target interval duration, control the heat pump device to enter the defrosting mode", the heat pump device control method may further include:

[0055] Determining the corresponding duration correction coefficient according to the air humidity; calculating the target interval duration according to the formula B2 = K1*B1, where B2 refers to the target interval duration, K1 refers to the duration correction coefficient, and B1 is a preset defrosting interval time.

[0056] According to different air humidities (X), the corresponding duration correction factor (K1) can be determined respectively, and the duration correction factors (K1) corresponding to different air humidities (X) are different.

[0057] After determining the corresponding duration correction factor according to the air humidity, the target interval duration (B2) is calculated according to the formula B2 = K1 * B1. The applicant finds that when the target interval duration calculated in this way is used in the relevant embodiments of the present application, the timeliness and accuracy of the determination of the frosting situation can be further ensured.

[0058] Optionally, in some other embodiments, the target interval duration mapped by the air humidity can be queried from the preset interval duration mapping table.

[0059] Further, in one embodiment, determining the corresponding duration correction factor according to the air humidity may specifically include: determining the duration correction factor according to the third curve formula K1 = c + S3 * X, where K1 refers to the duration correction factor, c is a preset correction factor, c > 0; S3 is a preset third slope, S3 < 0; X refers to the air humidity; when X ≥ X1, K1 = 0, and X1 > 0.

[0060] Refer to Figure 4 As Figure 4 shown in the third relationship curve 410 between K1 and X, the third curve formula corresponding to the third relationship curve is K1 = c + S3 * X. Using the air humidity (X) to determine the duration correction factor (K1) according to this third curve formula K1 = c + S3 * X, when this duration correction factor (K1) is used in the relevant embodiments of the present application, the timeliness and accuracy of the determination of the frosting situation can be further ensured. Among them, in some embodiments, the value of X1 can be specifically between 60% - 80%.

[0061] Optionally, in some other embodiments, the duration correction factor mapped by the air humidity can be queried from the preset duration correction factor mapping table.

[0062] Further, in one embodiment, determining the evaporation temperature according to the low - pressure pressure may include: determining the refrigerant in the heat pump device; determining the evaporation temperature according to the refrigerant and the low - pressure pressure.

[0063] Different refrigerant types have different temperature - pressure characteristics. The refrigerant used in the heat pump device can be determined from the preset heat pump device information database, and the evaporation temperature can be accurately determined according to the refrigerant and the low - pressure pressure.

[0064] For example, in one way, an evaporation temperature mapping table corresponding to the refrigerant in the heat pump device can be determined from multiple evaporation temperature mapping tables. Then, the evaporation temperature of the low-pressure pressure mapping can be queried from the evaporation temperature mapping table corresponding to the refrigerant, so as to convert the low-pressure pressure into the evaporation temperature. Optionally, in some ways, a preset evaporation temperature calculation formula can be used to calculate the evaporation temperature according to the refrigerant and the low-pressure pressure. Further, in some ways, the evaporation temperature can be further calculated by combining the refrigerant, the low-pressure pressure and other parameters (such as ambient temperature and humidity, etc.).

[0065] In addition, the embodiment of the present application also provides a heat pump device control device. As Figure 5 shown Figure 5 The block diagram of the heat pump device control device according to an embodiment of the present application is shown. Specifically: The heat pump device control device 500 may include a processor 501 with one or more processing cores and a memory 502 with one or more computer-readable storage media.

[0066] The processor 501 can load the executable file corresponding to the process of one or more computer programs into the memory 502 according to the instructions, and the processor 501 runs the computer programs stored in the memory 502, so as to implement various functions in the embodiments of the foregoing heat pump device control method of the present application.

[0067] For example, the processor 501 can execute: receive the low-pressure pressure, the suction gas temperature, the ambient temperature and the air humidity, and determine the defrosting end duration from the previous defrosting cycle; determine the evaporation temperature according to the low-pressure pressure; when both the evaporation temperature and the suction gas temperature are less than the target temperature and the defrosting end duration is greater than the target interval duration, control the heat pump device to enter the defrosting mode; wherein, the target temperature is determined according to the ambient temperature and the air humidity, and the target interval duration is determined according to the air humidity.

[0068] In some embodiments of the present application, before the step of controlling the heat pump device to enter the defrosting mode when both the evaporation temperature and the suction gas temperature are less than the target temperature and the defrosting end duration is greater than the target interval duration, it may further include: determining the corresponding reference temperature according to the ambient temperature; determining the corresponding temperature adjustment coefficient according to the air humidity; calculating the target temperature according to the formula A2 = A1 + K0 * A, where A2 refers to the target temperature, A is the first preset temperature, A1 refers to the reference temperature, and K0 refers to the temperature adjustment coefficient.

[0069] In some embodiments of the present application, the determining the corresponding reference temperature according to the ambient temperature includes: according to the first curve formula A1 = a + S1 * T 环Determine the reference temperature, where A1 refers to the reference temperature, a is the second preset temperature, a>0, S1 is the first preset slope, S1>0, and T 环 refers to the ambient temperature.

[0070] In some embodiments of the present application, the determining the corresponding temperature adjustment coefficient according to the air humidity includes: determining the temperature adjustment coefficient according to the second curve formula K0 = b + S2*X, where K0 refers to the temperature adjustment coefficient, X refers to the air humidity, S2 is the preset second slope, S2>0, b is the preset adjustment coefficient, b>0; when X is equal to X0, K0 is equal to 0, X0>0; S2 when X is less than X0 is less than S2 when X is greater than X0.

[0071] In some embodiments of the present application, before controlling the heat pump device to enter the defrosting mode when the evaporation temperature and the suction gas temperature are both less than the target temperature and the defrosting end duration is greater than the target interval duration, it may further include: determining the corresponding duration correction coefficient according to the air humidity; calculating the target interval duration according to the formula B2 = K1*B1, where B2 refers to the target interval duration, K1 refers to the duration correction coefficient, and B1 is the preset defrosting interval time.

[0072] In some embodiments of the present application, the determining the corresponding duration correction coefficient according to the air humidity includes: determining the duration correction coefficient according to the third curve formula K1 = c + S3*X, where K1 refers to the duration correction coefficient, c is the preset correction coefficient, c>0; S3 is the preset third slope, S3<0; X refers to the air humidity; when X is greater than or equal to X1, K1 is equal to 0, X1>0.

[0073] In some embodiments of the present application, the determining the evaporation temperature according to the low pressure includes: determining the refrigerant in the heat pump device; determining the evaporation temperature according to the refrigerant and the low pressure.

[0074] Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by a computer program, or by a computer program controlling related hardware. The computer program can be stored in a computer-readable storage medium and loaded and executed by a processor.

[0075] Therefore, the embodiments of the present application further provide a storage medium, in which a computer program is stored, and the computer program can be loaded by a processor to execute the steps in any one of the methods provided by the embodiments of the present application.

[0076] Among them, the storage medium may be a computer-readable storage medium, which may include: read-only memory (ROM, Read Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disc, etc.

[0077] Since the computer program stored in the storage medium can execute the steps in any of the methods provided in the embodiments of the present application, the beneficial effects achievable by the methods provided in the embodiments of the present application can be realized. For details, refer to the previous embodiments and will not be elaborated here.

[0078] In addition, referring to Figure 6 , the embodiments of the present application further provide a heat pump device. The heat pump device 600 may include a heat pump device control device 500 as shown in Figure 5 and other modules 700 (for example, a compressor, a fan, a fin heat exchanger, a four-way valve, etc.).

[0079] According to another embodiment of the present application, a computer program product or a computer program includes computer instructions stored in a computer-readable storage medium. The processor of the heat pump device control device reads the computer instructions from the computer-readable storage medium, and the processor executes the computer instructions, so that the heat pump device control device executes the methods provided in various alternative implementation manners described in the embodiments of the present application.

[0080] Those skilled in the art will readily conceive of other implementations of the present application after considering the specification and practicing the disclosed embodiments herein. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include known common knowledge or conventional technical means in the technical field not disclosed in the present application.

[0081] It should be understood that the present application is not limited to the embodiments described above and shown in the drawings, and various modifications and changes can be made without departing from its scope.

Claims

1. A control method for a heat pump device, characterized in that, Comprising: Receiving the low - pressure pressure, the suction gas temperature, the ambient temperature, and the air humidity, and determining the defrosting end duration since the previous defrosting cycle; Determining the evaporation temperature according to the low - pressure pressure; When both the evaporation temperature and the suction gas temperature are lower than the target temperature and the defrosting end duration is greater than the target interval duration, controlling the heat pump device to enter the defrosting mode; Wherein, the target temperature is determined according to the ambient temperature and the air humidity, and the target interval duration is determined according to the air humidity.

2. The method according to claim 1, wherein Before the step of "When both the evaporation temperature and the suction gas temperature are lower than the target temperature and the defrosting end duration is greater than the target interval duration, controlling the heat pump device to enter the defrosting mode", the method further includes: Determining the corresponding reference temperature according to the ambient temperature; Determining the corresponding temperature adjustment coefficient according to the air humidity; Calculating the target temperature according to the formula A2 = A1 + K0 * A, where A2 refers to the target temperature, A is the first preset temperature, A1 refers to the reference temperature, and K0 refers to the temperature adjustment coefficient.

3. The method according to claim 2, wherein The step of "Determining the corresponding reference temperature according to the ambient temperature" includes: According to the first curve formula A1 = a + S1*T 环 to determine the reference temperature, where A1 refers to the reference temperature, a is the second preset temperature, a > 0, S1 is the first preset slope, S1 > 0, and T 环 refers to the ambient temperature.

4. The method according to claim 2, wherein The step of "Determining the corresponding temperature adjustment coefficient according to the air humidity" includes: Determining the temperature adjustment coefficient according to the second curve formula K0 = b + S2 * X, where K0 refers to the temperature adjustment coefficient, X refers to the air humidity, S2 is the preset second slope, S2 > 0, b is the preset adjustment coefficient, b > 0; when X = X0, K0 = 0, X0 > 0; the S2 when X < X0 is less than the S2 when X > X0.

5. The method according to claim 1, wherein Before the step of "When both the evaporation temperature and the suction gas temperature are lower than the target temperature and the defrosting end duration is greater than the target interval duration, controlling the heat pump device to enter the defrosting mode", the method further includes: Determining the corresponding duration correction coefficient according to the air humidity; Calculating the target interval duration according to the formula B2 = K1 * B1, where B2 refers to the target interval duration, K1 refers to the duration correction coefficient, and B1 is the preset defrosting interval time.

6. The method according to claim 5, wherein The step of "Determining the corresponding duration correction coefficient according to the air humidity" includes: Determining the duration correction coefficient according to the third curve formula K1 = c + S3 * X, where K1 refers to the duration correction coefficient, c is the preset correction coefficient, c > 0; S3 is the preset third slope, S3 < 0; X refers to the air humidity; when X ≥ X1, K1 = 0, X1 > 0.

7. The method according to any one of claims 1 to 6, characterized in that, The step of "Determining the evaporation temperature according to the low - pressure pressure" includes: Determining the refrigerant in the heat pump device; Determining the evaporation temperature according to the refrigerant and the low - pressure pressure.

8. A control device for a heat pump device, characterized in that, Comprising: A memory storing a computer program; A processor reading the computer program stored in the memory to execute the method according to any one of claims 1 to 7.

9. A storage medium, characterized in that, A computer program is stored thereon, and when the computer program is executed by the processor of the heat pump device control device, the heat pump device control device is caused to execute the method according to any one of claims 1 to 7.

10. A heat pump device, characterized in that, Comprising the heat pump device control device according to claim 8.

Images