Air conditioning defrost control method, device, equipment and medium

Abstract

The present application provides an air conditioner defrost control method, device, equipment and medium. The method obtains the real-time heating capacity of the air conditioner, obtains the real-time average heating capacity of the air conditioner according to the real-time heating capacity of the air conditioner, and when the real-time average heating capacity of the air conditioner meets the preset heat exchange condition, fixes the valve opening of the electronic expansion valve of the air conditioner, and obtains the superheat of the outdoor heat exchanger outlet of the air conditioner in real time under the valve opening. When the superheat condition meets the preset superheat condition, the air conditioner is controlled to perform defrost processing. In this way, the defrost timing of the air conditioner can be accurately determined based on the accurately obtained data, thereby meeting the defrost demand of the air conditioner and satisfying the user experience.

Description

Technical Field

[0001] The present application relates to the field of electrical appliances, and in particular to an air-conditioning defrost control method, device, equipment and computer-readable storage medium. Background Art

[0002] During the heating process of an air conditioner with an outdoor unit, as the outdoor ambient temperature drops and the air conditioning load changes, the outdoor unit may be covered with snow or ice. Therefore, it is necessary to defrost the outdoor unit to avoid the outdoor unit being covered with snow or ice, which may cause the air conditioner's heating capacity to decrease, or even cause the air conditioner to shut down, which may affect the normal operation of the air conditioner.

[0003] The related art adopts a variety of methods to determine when to defrost the air conditioner, but the timing of starting defrost is not accurate enough. The defrost may be started when the frost layer is not thick, or the defrost may be started frequently when there is no frost, or the defrost may be started only when the frost layer is too thick, which affects the normal operation of the air conditioner.

[0004] Therefore, the industry is in urgent need of an accurate air conditioning defrost control method. Summary of the invention

[0005] The present application provides an air conditioner defrost control method, which can accurately determine the timing of defrosting. The present application also provides a device, equipment, computer-readable storage medium and computer program product corresponding to the above method.

[0006] In a first aspect, the present application provides an air conditioner defrost control method, the method comprising:

[0007] Get the real-time heating value of the air conditioner;

[0008] According to the real-time heating amount, obtaining the real-time average heating amount of the air conditioner;

[0009] When the real-time average heating capacity of the air conditioner meets the preset heat exchange condition, fixing the valve opening of the electronic expansion valve of the air conditioner;

[0010] Real-time acquisition of the superheat degree at the outlet of the outdoor heat exchanger of the air conditioner;

[0011] When the superheat meets the preset superheat condition, the air conditioner is controlled to perform defrosting processing.

[0012] In some possible implementations, the preset superheat condition includes:

[0013] The rate of change of the superheat degree is higher than a first preset threshold and / or the superheat degree is lower than a second preset threshold.

[0014] In some possible implementations, the method further includes:

[0015] When the supercooling degree of the outdoor heat exchanger of the air conditioner meets a preset supercooling degree condition, the air conditioner is controlled to stop defrosting.

[0016] In some possible implementations, the preset supercooling condition includes:

[0017] The supercooling degree is lower than a third preset threshold and / or the rate of change of the supercooling degree is lower than a fourth preset threshold.

[0018] In some possible implementations, the preset heat exchange condition includes: the real-time average heating capacity of the air conditioner reaches a maximum value.

[0019] In some possible implementations, the method further includes:

[0020] When the defrosting condition is met, the air conditioner is controlled to perform a defrosting process.

[0021] In some possible implementations, the method further includes:

[0022] When the defrost process reaches a preset stop time, the air conditioner is controlled to stop defrosting.

[0023] In a second aspect, the present application provides an air conditioner defrost control device, the device comprising:

[0024] Communication module, used to obtain the real-time heating amount of the air conditioner;

[0025] An acquisition module, used for acquiring the real-time average heating amount of the air conditioner according to the real-time heating amount;

[0026] A fixing module, used for fixing the valve opening of the electronic expansion valve of the air conditioner when the real-time average heating amount of the air conditioner meets the preset heat exchange condition;

[0027] The communication module is also used to obtain the superheat degree of the outdoor heat exchanger outlet of the air conditioner in real time;

[0028] The control module is used to control the air conditioner to perform defrosting when the superheat meets a preset superheat condition.

[0029] In some possible implementations, the preset superheat condition includes:

[0030] The rate of change of the superheat degree is higher than a first preset threshold and / or the superheat degree is lower than a second preset threshold.

[0031] In some possible implementations, the control module is further configured to:

[0032] When the supercooling degree of the outdoor heat exchanger of the air conditioner meets a preset supercooling degree condition, the air conditioner is controlled to stop defrosting.

[0033] In some possible implementations, the preset supercooling condition includes:

[0034] The supercooling degree is lower than a third preset threshold and / or the rate of change of the supercooling degree is lower than a fourth preset threshold.

[0035] In some possible implementations, the preset heat exchange condition includes: the real-time average heating capacity of the air conditioner reaches a maximum value.

[0036] In some possible implementations, the control module is further configured to:

[0037] When the defrosting condition is met, the air conditioner is controlled to perform a defrosting process.

[0038] In some possible implementations, the control module is further configured to:

[0039] When the defrost process reaches a preset stop time, the air conditioner is controlled to stop defrosting.

[0040] In a third aspect, the present application provides a device, the device comprising a processor and a memory. The processor and the memory communicate with each other. The processor is used to execute instructions stored in the memory, so that the device executes the air conditioner defrost control method in the first aspect or any implementation of the first aspect.

[0041] In a fourth aspect, the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores instructions, wherein the instructions instruct a device to execute the air conditioning defrost control method described in the first aspect or any one of the implementations of the first aspect.

[0042] In a fifth aspect, the present application provides a computer program product comprising instructions, which, when executed on a device, enables the device to execute the air conditioning defrost control method described in the first aspect or any one of the implementations of the first aspect.

[0043] Based on the implementations provided in the above aspects, this application can also be further combined to provide more implementations.

[0044] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages:

[0045] An embodiment of the present application provides an air conditioner defrost control method, which obtains the real-time heating capacity of the air conditioner, obtains the real-time average heating capacity of the air conditioner according to the real-time heating capacity of the air conditioner, and when the real-time average heating capacity of the air conditioner meets the preset heat exchange condition, fixes the valve opening of the electronic expansion valve of the air conditioner, and obtains the superheat of the outdoor heat exchanger outlet of the air conditioner in real time under the valve opening, and when the superheat condition meets the preset superheat condition, controls the air conditioner to perform defrost processing. In this way, the defrost timing of the air conditioner can be accurately determined based on the accurately obtained data, thereby meeting the defrost demand of the air conditioner and satisfying the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0047] Figure 1 A schematic diagram of a flow chart of an air conditioning defrost control method provided in an embodiment of the present application;

[0048] Figure 2 A schematic diagram of a curve of real-time heating capacity and time of air conditioner defrosting and a curve of real-time average heating capacity and time provided in an embodiment of the present application;

[0049] Figure 3 A schematic diagram of a curve of superheat and time at an outlet of an outdoor heat exchanger for defrosting an air conditioner provided in an embodiment of the present application;

[0050] Figure 4 A schematic diagram of an outdoor heat exchanger of an air conditioner provided in an embodiment of the present application;

[0051] Figure 5 A schematic structural diagram of an air-conditioning defrost control device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0052] The scheme in the embodiments provided in this application will be described below in conjunction with the drawings in this application.

[0053] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances. This is just a way of distinguishing objects with the same attributes when describing the embodiments of this application.

[0054] In order to facilitate understanding of the technical solution of the present application, some technical terms involved in the present application are introduced below.

[0055] During the heating process of an air conditioner with an outdoor unit, as the outdoor ambient temperature drops and the air conditioning load changes, the outdoor unit may be covered with snow or ice. Therefore, it is necessary to defrost the outdoor unit to avoid the outdoor unit being covered with snow or ice, which may cause the air conditioner's heating capacity to decrease, or even cause the air conditioner to shut down, which may affect the normal operation of the air conditioner.

[0056] In some methods, whether to start defrosting can be judged by outdoor temperature, accumulated heating time of air conditioner and temperature of defrost sensor. However, such judgment based only on temperature and time is not accurate. It may start defrosting when the frost layer is not thick, or start defrosting frequently when there is no frost, or start defrosting only when the frost layer is too thick. That is, the timing of defrosting is not accurately grasped, which reduces the cycle heating capacity of the air conditioner and seriously affects the user comfort when the air conditioner is heating.

[0057] In other methods, whether to defrost can be determined based on the heat exchange per unit area of ​​the air conditioner outdoor unit, and when the heat exchange per unit area is lower than a preset threshold, defrosting is initiated. However, the heat exchange per unit area is determined based on the outdoor heat exchange, outdoor temperature, and heat exchanger temperature, and the outdoor heat exchange cannot be accurately known. Therefore, the heat exchange per unit area determined based on the outdoor heat exchange is difficult to accurately know, and therefore it is still difficult to accurately obtain the defrost timing.

[0058] In view of this, the present application provides an air conditioner defrost control method, which is applied to electronic equipment. The electronic equipment refers to equipment with data processing capabilities, such as a server, or a terminal device such as a desktop, a laptop, or a smart phone.

[0059] Specifically, the electronic device obtains the real-time heating amount of the air conditioner, and obtains the real-time average heating amount of the air conditioner based on the real-time heating amount of the air conditioner. When the real-time average heating amount of the air conditioner meets the preset heat exchange condition, the valve opening of the electronic expansion valve of the air conditioner is fixed. Under the valve opening, the superheat of the outdoor heat exchanger outlet of the air conditioner is obtained in real time. When the superheat condition meets the preset superheat condition, the air conditioner is controlled to perform defrosting. In this way, the defrost timing of the air conditioner can be accurately judged based on the accurately obtained data, thereby meeting the defrost needs of the air conditioner and satisfying the user experience.

[0060] Next, the air conditioner defrost control method provided in the embodiment of the present application will be introduced with reference to the accompanying drawings.

[0061] See also Figure 1 The flowchart of the air conditioner defrosting method shown in FIG. 1 comprises the following steps:

[0062] S102: The electronic device obtains the real-time heating amount of the air conditioner.

[0063] The real-time heating capacity of the air conditioner refers to the heating capacity of the air conditioner at the current moment. The electronic device can obtain the real-time heating capacity of the air conditioner every second. The real-time heating capacity of the air conditioner can be calculated based on the refrigerant circulation volume, the enthalpy value of the refrigerant at the outlet of the outdoor heat exchanger, and the enthalpy value of the refrigerant at the inlet of the outdoor heat exchanger. Specifically, the real-time heating capacity Qh of the air conditioner can be obtained by formula (1):

[0064] Qh=G×(h2-h1) (1)

[0065] Among them, G represents the refrigerant circulation volume, h2 represents the enthalpy value of the refrigerant at the outlet of the outdoor heat exchanger, and h1 represents the enthalpy value of the refrigerant at the inlet of the outdoor heat exchanger.

[0066] like Figure 2 As shown, Figure 2 (A) is a graph showing the change of the real-time heating capacity of the air conditioner over time, which includes two defrosting cycles.

[0067] S104: The electronic device obtains the real-time average heating capacity of the air conditioner according to the real-time heating capacity of the air conditioner.

[0068] The real-time average heating capacity refers to the average heating capacity from the current time to the end of the last defrost. The real-time average heating capacity can be calculated based on the real-time heating capacity.

[0069] like Figure 2 As shown, Figure 2 (B) is a graph showing the change of the real-time average heating capacity of the air conditioner over time. From the last defrost to the start of this defrost, the real-time average heating capacity at the next moment is usually higher than the real-time average heating capacity at the previous moment. Figure 2 (B) before t01. The real-time average heating capacity Qv satisfies: Qv(n)-Qv(n-1)≥K1, where K1 can usually be 0.

[0070] S106: When the real-time average heating amount of the air conditioner meets a preset heat exchange condition, fixing the valve opening of the electronic expansion valve.

[0071] The preset heat exchange condition may be: the real-time average heating capacity Qv satisfies: Qv(n)-Qv(n-1)>0, that is, the real-time average heating capacity at the next moment is lower than the real-time average heating capacity at the previous moment. That is, the real-time average heating capacity of the air conditioner reaches the maximum value. Figure 2 Point A in (B), and point B in the next stage.

[0072] In this way, the highest value of the real-time average heating capacity can be determined, that is, the highest value of the average heating capacity, which is the best time to fix the valve opening of the electronic expansion valve. At this time, the outdoor heat exchanger is in the early and middle stages of frost formation, which generally does not cause excessive wind resistance and the actual fan speed n1 < target speed n0.

[0073] In some other possible implementations, if the air conditioner is a large-capacity outdoor unit, the real-time average heating amount Qv satisfies: Qv(n)-Qv(n-1)>K1, and K1 can take a negative value, that is, the time for determining the valve opening of the fixed electronic expansion valve can be delayed.

[0074] S108: The electronic device obtains the superheat degree of the outdoor heat exchanger outlet of the air conditioner in real time.

[0075] Superheat refers to the difference between the heat exchange intensity on the refrigerant side and the heat exchange intensity on the air side. Normally, when the heat exchange intensity on the refrigerant side is less than that on the air side, the electronic expansion valve needs to be opened, and when the heat exchange intensity on the refrigerant side is greater than that on the air side, the electronic expansion valve needs to be closed. In this solution, when the real-time average heating capacity of the air conditioner meets the preset heat exchange conditions, the current electronic expansion valve opening is fixed.

[0076] Due to the fixed valve opening of the electronic expansion valve, the electronic expansion valve maintains the valve opening at time n-1. Since the compressor frequency will be adjusted according to the indoor side, and the indoor demand is considered constant for a short time, the compressor frequency is also considered constant. Due to the fixed valve opening of the electronic expansion valve, the outdoor air side cannot effectively evaporate the refrigerant in the outdoor heat exchanger completely, and the superheat at the outlet of the outdoor heat exchanger will decrease. The superheat at the outlet of the outdoor heat exchanger changes as follows: Figure 3 As shown, the best defrost timing can be determined according to the superheat at the outlet of the air conditioner outdoor heat exchanger.

[0077] S110: When the superheat meets a preset superheat condition, the electronic device controls the air conditioner to perform defrosting.

[0078] Wherein, the preset superheat condition includes:

[0079] The rate of change of the superheat is higher than a first preset threshold;

[0080] Alternatively, the superheat degree is lower than a second preset threshold;

[0081] Alternatively, the rate of change of the superheat degree is higher than a first preset threshold and the superheat degree is lower than a second preset threshold.

[0082] The first preset threshold is the preset threshold of the superheat change rate at the outlet of the air conditioner outdoor heat exchanger, such as Figure 3As shown, it can be a preset threshold value of the slope of the superheat curve. When the rate of change of the superheat is higher than the first preset threshold value, it indicates that the rate of change of the superheat is high and defrosting is required. It should be noted that the rate of change in this solution is the absolute value of the rate of decline.

[0083] The second preset threshold is the preset threshold of the superheat degree at the outlet of the outdoor heat exchanger of the air conditioner, such as Figure 3 As shown, it can be a preset threshold value of the vertical coordinate of the superheat curve. When the superheat is lower than the second preset threshold value, it indicates that the superheat is low and defrosting is required. The second preset threshold value can be 0.5.

[0084] In this way, when to defrost can be determined based on the superheat at the outlet of the outdoor heat exchanger of the air conditioner under the premise of fixing the valve opening of the electronic expansion valve. Moreover, all the data therein can be accurately obtained, so that the defrost timing can be accurately obtained, and the defrost process can be performed.

[0085] In this scheme, when the outdoor heat exchanger is frosted, the wind resistance increases and the heat transfer coefficient decreases. If the control valve remains open, the heat exchange between the refrigerant side and the air side will inevitably be unequal, resulting in a decrease in the superheat at the heat exchanger outlet. Figure 4 As shown, the relationship between the degree of superheat reduction and time is captured, so as to obtain the best time to start defrosting.

[0086] In some possible implementations, the present solution further includes determining that defrosting begins when a defrosting condition is met. The defrosting condition may be: after one defrosting, the temperature acquired by the defrosting temperature sensor is less than a threshold temperature and accumulated for a period of time. The threshold temperature may be 0, -1 or -2, etc., and the accumulated time may be 10 minutes, 15 minutes or other. The accumulated time is related to the threshold temperature. When the ambient temperature is lower, the accumulated time may be smaller.

[0087] S112: When the degree of subcooling of the outdoor heat exchanger meets a preset degree of subcooling condition, controlling the air conditioner to stop defrosting.

[0088] The subcooling degree of the outdoor heat exchanger can be obtained through the refrigerant pressure sensor (LPS). LPS is used to assist in the calculation of the refrigerant enthalpy value at the inlet and outlet of the outdoor heat exchanger and the calculation of the subcooling degree during the defrosting process, such as Figure 4 Shown in FIG. 1 is a schematic diagram of an outdoor heat exchanger of an air conditioner, including an LPS.

[0089] Among them, the preset subcooling conditions include:

[0090] The supercooling degree is lower than a third preset threshold;

[0091] or, the rate of change of supercooling is lower than a fourth preset threshold;

[0092] Alternatively, the supercooling degree is lower than a third preset threshold and the rate of change of the supercooling degree is lower than a fourth preset threshold.

[0093] In some possible implementations, the degree of supercooling and the corresponding rate of change can be obtained with a detection period of 10 seconds. The degree of supercooling SC can be obtained based on the pressure value and temperature of the refrigerant pressure sensor, as shown in formula (2):

[0094] SC(n)= LPS(t)- Tl (2)

[0095] Wherein, LPS is the pressure value of the refrigerant pressure sensor, and T1 is the temperature at the current moment.

[0096] The rate of change of the supercooling degree can be determined based on the supercooling degree obtained this time and the supercooling degree of the previous cycle.

[0097] When heating and defrosting, the outdoor fan stops running, and the process is heat exchange between the frost layer and the refrigerant (not related to the air side). When the frost layer is thick, the refrigerant can release more heat into the frost, so the refrigerant outlet supercooling SC is relatively large, and the change rate ξ is also large. When there is no frost, SC(n) and ξ will be reduced to the limit, that is, the two values ​​can be stabilized.

[0098] In some other possible implementations, the defrost stop condition may be reaching a preset stop time, wherein the preset stop time may be 10 minutes or 12 minutes, etc., to prevent the defrost process from being unable to exit due to a sensor detection failure.

[0099] Based on the description of the above content, an embodiment of the present application provides an air conditioner defrost control method, which obtains the real-time heating amount of the air conditioner, obtains the real-time average heating amount of the air conditioner based on the real-time heating amount of the air conditioner, and when the real-time average heating amount of the air conditioner meets the preset heat exchange condition, fixes the valve opening of the electronic expansion valve of the air conditioner, and at this valve opening, obtains the superheat of the outdoor heat exchanger outlet of the air conditioner in real time, and when the superheat condition meets the preset superheat condition, controls the air conditioner to perform defrost processing. In this way, the defrost timing of the air conditioner can be accurately judged based on the accurately obtained data, thereby meeting the defrost needs of the air conditioner and satisfying the user experience.

[0100] Combination of the above Figure 1 The air conditioner defrost control method provided in the embodiment of the present application has been introduced in detail. Next, the air conditioner defrost control device provided in the embodiment of the present application will be introduced in conjunction with the accompanying drawings.

[0101] See also Figure 5 The structural diagram of the air conditioning control device shown in the figure, the device 500 includes: a communication module 502, an acquisition module 504, a fixing module 506 and a control module 508.

[0102] Communication module, used to obtain the real-time heating amount of the air conditioner;

[0103] An acquisition module, used for acquiring the real-time average heating amount of the air conditioner according to the real-time heating amount;

[0104] A fixing module, used for fixing the valve opening of the electronic expansion valve of the air conditioner when the real-time average heating amount of the air conditioner meets the preset heat exchange condition;

[0105] The communication module is also used to obtain the superheat degree of the outdoor heat exchanger outlet of the air conditioner in real time;

[0106] The control module is used to control the air conditioner to perform defrosting when the superheat meets a preset superheat condition.

[0107] In some possible implementations, the preset superheat condition includes:

[0108] The rate of change of the superheat degree is higher than a first preset threshold and / or the superheat degree is lower than a second preset threshold.

[0109] In some possible implementations, the control module is further configured to:

[0110] When the supercooling degree of the outdoor heat exchanger of the air conditioner meets a preset supercooling degree condition, the air conditioner is controlled to stop defrosting.

[0111] In some possible implementations, the preset supercooling condition includes:

[0112] The supercooling degree is lower than a third preset threshold and / or the rate of change of the supercooling degree is lower than a fourth preset threshold.

[0113] In some possible implementations, the preset heat exchange condition includes: the real-time average heating capacity of the air conditioner reaches a maximum value.

[0114] In some possible implementations, the control module is further configured to:

[0115] When the defrosting condition is met, the air conditioner is controlled to perform a defrosting process.

[0116] In some possible implementations, the control module is further configured to:

[0117] When the defrost process reaches a preset stop time, the air conditioner is controlled to stop defrosting.

[0118] According to the embodiment of the present application, the air conditioner defrost control device 500 can correspond to the method described in the embodiment of the present application, and the above and other operations and / or functions of each module of the air conditioner defrost control device 500 are respectively to achieve Figure 1For the sake of brevity, the corresponding processes of each method in are not repeated here.

[0119] The present application provides a device for implementing an air conditioner defrost control method. The device includes a processor and a memory. The processor and the memory communicate with each other. The processor is used to execute instructions stored in the memory so that the device executes the air conditioner defrost control method.

[0120] The present application provides a computer-readable storage medium, wherein instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium is run on a device, the device executes the above-mentioned air conditioning defrost control method.

[0121] The present application provides a computer program product including instructions, which, when executed on a device, enables the device to execute the above-mentioned air-conditioning defrost control method.

[0122] It should also be noted that the device embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed over multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. In addition, in the drawings of the device embodiments provided by the present application, the connection relationship between the modules indicates that there is a communication connection between them, which may be specifically implemented as one or more communication buses or signal lines.

[0123] Through the description of the above implementation mode, the technicians in the field can clearly understand that the present application can be implemented by means of software plus necessary general hardware, and of course, it can also be implemented by special hardware including special integrated circuits, special CPUs, special memories, special components, etc. In general, all functions completed by computer programs can be easily implemented by corresponding hardware, and the specific hardware structure used to implement the same function can also be various, such as analog circuits, digital circuits or special circuits. However, for the present application, software program implementation is a better implementation mode in more cases. Based on such an understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a readable storage medium, such as a computer floppy disk, a U disk, a mobile hard disk, a ROM, a RAM, a disk or an optical disk, etc., including a number of instructions to enable a computer device (which can be a personal computer, a training device, or a network device, etc.) to execute the methods described in each embodiment of the present application.

[0124] In the above embodiments, all or part of the embodiments may be implemented by software, hardware, firmware or any combination thereof. When implemented by software, all or part of the embodiments may be implemented in the form of a computer program product.

[0125] The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions may be transmitted from a website site, a computer, a training device, or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, training device, or data center. The computer-readable storage medium may be any available medium that a computer can store or a data storage device such as a training device, a data center, etc. that includes one or more available media integrations. The available medium may be a magnetic medium, (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid-state drive (SSD)), etc.

Claims

1. An air conditioner defrost control method, characterized in that: The method comprises: Get the real-time heating value of the air conditioner; According to the real-time heating amount, obtaining the real-time average heating amount of the air conditioner; When the real-time average heating capacity of the air conditioner meets the preset heat exchange condition, the valve opening of the electronic expansion valve of the air conditioner is fixed; the preset heat exchange condition includes: the real-time average heating capacity of the air conditioner reaches the maximum value; Real-time acquisition of the superheat degree at the outlet of the outdoor heat exchanger of the air conditioner; When the superheat meets the preset superheat condition, the air conditioner is controlled to perform defrosting processing.

2. The method according to claim 1, characterized in that: The preset superheat condition includes: The rate of change of the superheat degree is higher than a first preset threshold and / or the superheat degree is lower than a second preset threshold.

3. The method according to claim 1, characterized in that The method further comprises: When the supercooling degree of the outdoor heat exchanger of the air conditioner meets a preset supercooling degree condition, the air conditioner is controlled to stop defrosting.

4. The method according to claim 3, characterized in that The preset subcooling condition includes: The supercooling degree is lower than a third preset threshold and / or the rate of change of the supercooling degree is lower than a fourth preset threshold.

5. The method according to claim 1, characterized in that The method further comprises: When the defrosting condition is met, the air conditioner is controlled to perform a defrosting process.

6. The method according to claim 1, characterized in that The method further comprises: When the defrost process reaches a preset stop time, the air conditioner is controlled to stop defrosting.

7. An air conditioner defrost control device, characterized in that: The device comprises: Communication module, used to obtain the real-time heating amount of the air conditioner; An acquisition module, used for acquiring the real-time average heating amount of the air conditioner according to the real-time heating amount; A fixing module, used for fixing the valve opening of the electronic expansion valve of the air conditioner when the real-time average heating amount of the air conditioner meets a preset heat exchange condition; the preset heat exchange condition includes: the real-time average heating amount of the air conditioner reaches a maximum value; The communication module is also used to obtain the superheat degree of the outdoor heat exchanger outlet of the air conditioner in real time; The control module is used to control the air conditioner to perform defrosting when the superheat meets a preset superheat condition.

8. A device, characterized in that The device comprises a processor and a memory; The processor is configured to execute instructions stored in the memory, so that the device performs the method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that: The method comprises instructions for instructing a device to execute the method according to any one of claims 1 to 6.

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