Defrosting control method, device, apparatus and computer storage medium

Abstract

The application belongs to the field of air conditioners, and particularly relates to a defrosting control method, device, equipment and computer storage medium. The defrosting control method provided by the application comprises the following steps: continuously acquiring the condensing pressure of an air conditioner; controlling the fan speed according to the condensing pressure, wherein if the condensing pressure is greater than a first preset condensing pressure, the fan speed is increased; and when it is determined that the condensing pressure is less than a second preset condensing pressure, a four-way valve is reversed, and the four-way valve is used for switching between heating and cooling. The defrosting control method provided by the application detects the condensing pressure of the air conditioner, and increases the fan speed when the condensing pressure is greater than the first preset condensing pressure, so that the waiting time for reversing the four-way valve is shortened, the heating cycle of the air conditioner is increased, and the user experience is improved.

Description

Technical Field

[0001] This application belongs to the field of air conditioning, and specifically relates to a defrosting control method, device, equipment, and computer storage medium. Background Technology

[0002] Air conditioners, as cooling or heating devices, have become an integral part of people's lives, improving their comfort. When an air conditioner is operating at low temperatures for heating, frost will form on its outdoor unit's heat exchanger. As the frost thickness increases, the heat exchange efficiency of the outdoor unit's heat exchanger decreases, thus reducing the heating effect. Therefore, defrosting is necessary.

[0003] Normally, during defrosting, the four-way valve is de-energized and reversed. The outdoor unit's heat exchanger acts as a condenser. The high-temperature refrigerant discharged from the compressor releases heat through the outdoor unit's heat exchanger, causing the frost on the heat exchanger to melt into water and flow away, thus achieving the defrosting effect. Current technology typically requires a fan to blow air to cool the system and reduce the pressure, which is necessary to complete the four-way valve reversal.

[0004] However, in existing technologies, the waiting time for the four-way valve to switch during the defrosting process is fixed, for example, the fan blowing time is fixed. This results in a long waiting time for the four-way valve to switch, affecting the user experience. Summary of the Invention

[0005] This application provides a defrosting control method, apparatus, device, and computer storage medium to address the shortcomings of the long defrosting process in the prior art.

[0006] On the one hand, this application provides a defrosting control method, including:

[0007] Continuously obtain the condensing pressure of the air conditioner;

[0008] The fan speed is controlled according to the condensation pressure, wherein if the condensation pressure is greater than the first preset condensation pressure, the fan speed is increased.

[0009] When the condensing pressure is determined to be less than the second preset condensing pressure, the four-way valve reverses, and the four-way valve is used to switch between heating and cooling.

[0010] Optionally, if the condensing pressure is between the first preset condensing pressure and the second preset condensing pressure, the fan is controlled to maintain its original speed.

[0011] Optionally, continuously acquiring the condensing pressure of the air conditioner includes:

[0012] When a defrosting start signal is detected, the condensing pressure of the air conditioner is continuously acquired. The condensing pressure of the air conditioner is determined based on the temperature of the outdoor unit's coil.

[0013] Optionally, after determining that the condensing pressure is less than the second preset condensing pressure, the method further includes:

[0014] The fan is stopped and the defrosting process begins.

[0015] Optionally, continuously acquiring the condensing pressure of the air conditioner includes:

[0016] When the defrosting end signal is detected, the condensing pressure of the air conditioner is continuously acquired. The condensing pressure of the air conditioner is determined based on the indoor unit coil temperature.

[0017] Optionally, after determining that the condensing pressure is less than the second preset condensing pressure, the method further includes:

[0018] Start the compressor to enter heating mode.

[0019] Optionally, continuously acquiring the condensing pressure of the air conditioner includes:

[0020] The condensing pressure of the air conditioner is continuously measured at a preset cycle.

[0021] Secondly, this application provides a defrosting control device, comprising:

[0022] The acquisition module is used to continuously acquire the condensing pressure of the air conditioner;

[0023] The control module is used to control the fan speed according to the condensing pressure, wherein if the condensing pressure is greater than a first preset condensing pressure, the fan speed is increased;

[0024] When the condensing pressure is determined to be less than the second preset condensing pressure, the four-way valve reverses, and the four-way valve is used to switch between heating and cooling.

[0025] Optionally, the control module is specifically used to control the fan to maintain the original wind speed when the condensing pressure is between the first preset condensing pressure and the second preset condensing pressure.

[0026] Optionally, the acquisition module is specifically used to continuously acquire the condensing pressure of the air conditioner when a defrosting start signal is detected, wherein the condensing pressure of the air conditioner is determined based on the temperature of the outdoor unit coil.

[0027] Optionally, the control module is further configured to control the fan to stop running and enter the defrosting operation after determining that the condensing pressure is less than the second preset condensing pressure.

[0028] Optionally, the acquisition module is specifically used to continuously acquire the condensing pressure of the air conditioner when a defrosting end signal is detected, wherein the condensing pressure of the air conditioner is determined based on the indoor unit coil temperature.

[0029] Optionally, the control module is further configured to start the compressor and enter the heating mode after determining that the condensing pressure is less than the second preset condensing pressure.

[0030] Optionally, the acquisition module is specifically used to continuously acquire the condensing pressure of the air conditioner through a preset period.

[0031] Thirdly, this application provides a defrosting control device, comprising:

[0032] include:

[0033] Memory;

[0034] processor;

[0035] The memory stores computer-executed instructions;

[0036] The processor executes computer execution instructions stored in the memory to implement the defrosting control method as described in the first aspect and various possible implementations of the first aspect.

[0037] Fourthly, this application provides a computer storage medium storing computer execution instructions thereon, which are executed by a processor to implement the defrosting control method as described in the first aspect and various possible implementations of the first aspect.

[0038] The defrosting control method provided in this embodiment continuously acquires the condensing pressure of the air conditioner; controls the fan speed according to the condensing pressure, wherein if the condensing pressure is greater than a first preset condensing pressure, the fan speed is increased; when the condensing pressure is determined to be less than a second preset condensing pressure, the four-way valve is switched, the four-way valve is used for switching between heating and cooling, thereby shortening the waiting time for the four-way valve to switch, increasing the heating cycle of the air conditioner, and improving the user experience. Attached Figure Description

[0039] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0040] Figure 1 This is the process of the defrosting control method provided in this application. Figure 1 ;

[0041] Figure 2 This is the process of the defrosting control method provided in this application. Figure 2 ;

[0042] Figure 3 This is the process of the defrosting control method provided in this application. Figure 3 ;

[0043] Figure 4This is a schematic diagram of the defrosting control device provided in this application;

[0044] Figure 5 This is a structural schematic diagram of the defrosting control device provided in this application.

[0045] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0046] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0047] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented, for example, in orders other than those illustrated or described herein.

[0048] First, the terms used in this application will be explained.

[0049] A four-way valve is a control valve with four ports. By switching the four-way valve, the air conditioner can switch between cooling and heating modes.

[0050] Compressor: A driven fluid machine that raises low-pressure gas to high-pressure gas; it is the heart of a refrigeration system.

[0051] Air conditioners, as cooling or heating devices, have become an integral part of people's lives, improving their comfort. When an air conditioner is operating at a low temperature for heating, frost will form on its outdoor unit's heat exchanger, requiring defrosting.

[0052] Normally, during defrosting, the four-way valve is de-energized and reversed. The outdoor unit's heat exchanger acts as a condenser. The high-temperature refrigerant discharged from the compressor releases heat through the outdoor unit's heat exchanger. Therefore, the frost on the outdoor unit's heat exchanger absorbs heat and melts into water, which then flows away, thus achieving the defrosting effect.

[0053] In existing technologies, the air conditioning system pressure needs to be reduced to complete the switching of the four-way valve. Generally, the system is designed so that after the compressor stops for a certain period of time, a fan is used to blow air to cool the system, thereby reducing the air conditioning system pressure and completing the switching of the four-way valve.

[0054] However, in the existing technology, because the compressor needs to wait for a certain period of time after it stops, and the fan blows air for a fixed period of time, the waiting time for the four-way valve to switch is relatively long.

[0055] Meanwhile, because the compressor stops during the defrosting process, the air conditioner will not heat up quickly, and the indoor temperature will hardly rise at this time. The air conditioner will only enter heating mode again after defrosting is complete. Therefore, if the waiting time for the four-way valve to switch is long, the heating cycle of the air conditioner will be shortened, thus affecting the user experience.

[0056] This application provides a defrosting control method that detects the condensing pressure of the air conditioner and controls the fan speed based on the condensing pressure, thereby shortening the waiting time for the four-way valve to switch, increasing the heating cycle of the air conditioner, and improving the user experience.

[0057] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0058] Figure 1 Flowchart of the defrosting control method provided in the embodiments of this application Figure 1 .like Figure 1 As shown in this embodiment, the defrosting control method includes:

[0059] S101: Continuously obtain the condensing pressure of the air conditioner.

[0060] The condensing pressure is the pressure at which the refrigerant condenses from gas to liquid within the condenser, generally referring to high pressure. This application does not impose any special limitations on the specific implementation method for obtaining the condensing pressure of the air conditioner.

[0061] In this step, for example, the condensing pressure of the air conditioner can be continuously obtained according to a preset cycle.

[0062] S102: Control the fan speed according to the condensing pressure, wherein if the condensing pressure is greater than the first preset condensing pressure, the fan speed is increased.

[0063] The air conditioner is pre-set with a first preset condensing pressure. When the current condensing pressure is determined to be greater than the first preset condensing pressure, the fan speed can be increased to enhance the fan's heat dissipation and cooling effect.

[0064] S103: When it is determined that the condensing pressure is less than the second preset condensing pressure, the four-way valve is switched, and the four-way valve is used for switching between heating and cooling.

[0065] The air conditioner has a second preset condensing pressure. When the current condensing pressure is determined to be less than the second preset condensing pressure, the four-way valve switches.

[0066] Specifically, the principle of a four-way valve is to change the flow direction of the refrigerant in the system, thereby altering the functions of the air conditioner's two components and switching between cooling, heating, or defrosting. The basic condition for the four-way valve to switch is that the pressure difference (f1-f2) across the piston must be greater than the frictional resistance f. In the above steps, the fan's role is to cool the air, thus changing the pressure across the piston of the four-way valve, making the current condensing pressure lower than the second preset condensing pressure. At this point, the four-way valve will complete the switching based on the pressure difference across the piston.

[0067] For example, the second preset condensing pressure is less than the first preset condensing pressure.

[0068] The defrosting control method provided in this embodiment includes: continuously acquiring the condensing pressure of the air conditioner; controlling the fan speed according to the condensing pressure, wherein if the condensing pressure is greater than a first preset condensing pressure, the fan speed is increased; and when the condensing pressure is determined to be less than a second preset condensing pressure, a four-way valve is switched, the four-way valve being used for switching between heating and cooling. The defrosting control method provided in this embodiment, by detecting the condensing pressure of the air conditioner and increasing the fan speed when the condensing pressure is greater than the first preset condensing pressure, shortens the waiting time for the four-way valve to switch, increases the heating cycle of the air conditioner, and improves the user experience.

[0069] Figure 2 Flowchart of the defrosting control method provided in the embodiments of this application Figure 2 The execution timing of this embodiment is when defrosting is about to begin. In this embodiment, the air conditioner determines that frost has formed on the outdoor unit's heat exchanger and sends a defrosting start message. Figure 2 As shown in this embodiment, the defrosting control method includes:

[0070] S201: When a defrosting start signal is detected, the condensing pressure of the air conditioner is continuously acquired. The condensing pressure of the air conditioner is determined based on the temperature of the outdoor unit coil.

[0071] The defrost start signal indicates that defrosting is required. Upon detecting the defrost start information, the compressor stops running to perform the defrosting operation.

[0072] At this point, the condensing pressure of the air conditioner can be determined based on the outdoor unit's coil temperature. For example, the coil temperature of the outdoor unit can be obtained using a temperature sensor, and the current condensing pressure can be determined based on the coil temperature. Generally speaking, the outdoor unit's coil temperature and condensing temperature are directly proportional.

[0073] S202: Control the fan speed according to the condensation pressure.

[0074] S203: Determine whether the condensing pressure is greater than the first preset condensing pressure; if yes, proceed to step S204; if no, proceed to step S205.

[0075] S204: Increase fan speed.

[0076] Once the condensing pressure is obtained, the fan speed can be controlled based on this pressure. If the current condensing pressure is greater than the first preset condensing pressure, the fan speed can be increased to enhance the fan's heat dissipation and cooling effect, thereby accelerating the reduction of the air conditioner's condensing pressure. If the current condensing pressure is not greater than the first preset condensing pressure, further judgment is required.

[0077] Understandably, when the current condensing pressure is high, a higher fan speed can be used to speed up the pressure reduction process, thereby shortening the waiting time for the four-way valve to switch and increasing the heating cycle of the air conditioner.

[0078] For example, the increased wind speed can be a fixed value or it can vary with changes in condensing pressure. This application does not impose any particular limitation on this.

[0079] S205: Determine whether the condensing pressure is between the first preset condensing pressure and the second preset condensing pressure; if yes, proceed to step S206; if no, proceed to step S207.

[0080] S206: Control the fan to maintain the original wind speed.

[0081] If the current condensing pressure is between the first preset condensing pressure and the second preset condensing pressure, the fan will be controlled to maintain its original speed.

[0082] The original wind speed refers to the wind speed of the fan when it is not increased. For example, if the original wind speed of the fan is n, when the condensing pressure is greater than the first preset condensing pressure, the wind speed is increased by Δn (i.e., the increased fan speed is n + Δn); when the condensing pressure is between the first preset condensing pressure and the second preset condensing pressure, the fan is controlled to maintain the original wind speed n and continue to operate (i.e., the wind speed decreases from n + Δn to n).

[0083] The purpose of controlling the fan to maintain its original speed here is as follows: If the current condensing pressure is between the first and second preset condensing pressures, it indicates that the current outdoor unit coil temperature is not high, and the current condensing pressure is not very high either; it simply hasn't reached the condition for the four-way valve to complete its reversal. Therefore, there is no need to keep the fan running at high power (i.e., increase the fan speed); it is only necessary to control the fan to maintain its original speed to cool down the unit, thus reducing the power consumption of the air conditioner.

[0084] For example, the second preset condensing pressure is less than the first preset condensing pressure.

[0085] S207: Determine that the condensing pressure is less than the second preset condensing pressure.

[0086] S208: Control the fan to stop running, switch the four-way valve, and enter the defrosting operation.

[0087] Since the detected signal is the start of defrosting, the execution timing is before defrosting begins. Once it is determined that the condensing pressure is less than the second preset condensing pressure, it indicates that the pressure at both ends of the four-way valve piston is sufficient to cause the four-way valve to switch, thus initiating the defrosting operation. Therefore, after confirming that the condensing pressure is less than the second preset condensing pressure, the fan is stopped, and the defrosting operation begins.

[0088] The defrosting control method provided in this embodiment continuously acquires the condensing pressure of the air conditioner determined based on the outdoor unit coil temperature when a defrosting start signal is detected, and controls the fan speed according to the current condensing pressure, thereby shortening the waiting time for the four-way valve to switch before entering the defrosting operation, increasing the heating cycle of the air conditioner, and improving the user experience.

[0089] Figure 3 Flowchart of the defrosting control method provided in the embodiments of this application Figure 3 The execution timing of this embodiment is after the air conditioner has completed defrosting. In this embodiment, the air conditioner will send a defrosting completion message after determining that the defrosting operation has been completed. Figure 3 As shown in this embodiment, the defrosting control method includes:

[0090] S301: When a defrosting end signal is detected, the condensing pressure of the air conditioner is continuously acquired. The condensing pressure of the air conditioner is determined based on the temperature of the outdoor unit coil.

[0091] The defrosting end signal indicates that defrosting has ended and heating can resume. Upon detecting the defrosting end signal, the fan starts, allowing the four-way valve to switch and initiate heating operation.

[0092] At this point, the condensing pressure of the air conditioner can be determined based on the indoor unit's coil temperature. For example, the coil temperature of the indoor unit can be obtained using a temperature sensor, and the current condensing pressure of the air conditioner can be determined based on the coil temperature. Generally speaking, the indoor unit's coil temperature and condensing temperature are directly proportional.

[0093] S302: Control the fan speed according to the condensation pressure.

[0094] S303: Determine whether the condensing pressure is greater than the first preset condensing pressure; if yes, proceed to step S304; if no, proceed to step S305.

[0095] S304: Increase fan speed.

[0096] S305: Determine whether the condensing pressure is between the first preset condensing pressure and the second preset condensing pressure; if yes, proceed to step S306; if no, proceed to step S307.

[0097] S306: Control the fan to maintain the original wind speed.

[0098] Steps S302-S306 are similar to steps S202-S206 above, and will not be repeated here.

[0099] S307: Determine that the condensing pressure is less than the second preset condensing pressure.

[0100] S308: The four-way valve reverses, starts the compressor, and enters the heating mode.

[0101] In this embodiment, since the detected signal is the end of defrosting, the execution timing is after defrosting is complete and before entering heating mode. When it is determined that the condensing pressure is less than the second preset condensing pressure, it indicates that the pressure at both ends of the four-way valve piston is sufficient to cause the four-way valve to switch, thereby starting the compressor to continue heating. Therefore, after determining that the condensing pressure is less than the second preset condensing pressure, the compressor is started, and heating mode is entered.

[0102] The defrosting control method provided in this embodiment continuously acquires the condensing pressure of the air conditioner determined based on the indoor unit coil temperature when the defrosting end signal is detected, and controls the fan speed according to the current condensing pressure, thereby shortening the waiting time for the four-way valve to switch before entering the heating mode after defrosting is completed, increasing the heating cycle of the air conditioner, and improving the user experience.

[0103] Those skilled in the art will recognize that, in one or more of the above examples, the method described in the embodiments of the present invention can be applied to the same air conditioner or to different air conditioners. When applied to the same air conditioner, if the current execution time is when the air conditioner is preparing for defrosting, then it can be used... Figure 2The method shown can be used if the current execution time is when the air conditioner has completed defrosting and is preparing to continue heating. Figure 3 The method shown.

[0104] Figure 4 This is a schematic diagram of the defrosting control device provided in this application. Figure 4 As shown, this application provides a defrosting control device, the defrosting control device 300 including:

[0105] The acquisition module 301 is used to continuously acquire the condensing pressure of the air conditioner;

[0106] The control module 302 is used to control the fan speed according to the condensing pressure, wherein if the condensing pressure is greater than a first preset condensing pressure, the fan speed is increased.

[0107] When the condensing pressure is determined to be less than the second preset condensing pressure, the four-way valve reverses, and the four-way valve is used to switch between heating and cooling.

[0108] Optionally, the control module 302 is specifically used to control the fan to maintain the original wind speed when the condensing pressure is between the first preset condensing pressure and the second preset condensing pressure.

[0109] Optionally, the acquisition module 301 is specifically used to continuously acquire the condensing pressure of the air conditioner when a defrosting start signal is detected. The condensing pressure of the air conditioner is determined based on the temperature of the outdoor unit coil.

[0110] Optionally, the control module 302 is further configured to control the fan to stop running and enter the defrosting operation after determining that the condensing pressure is less than the second preset condensing pressure.

[0111] Optionally, the acquisition module 301 is specifically used to continuously acquire the condensing pressure of the air conditioner when a defrosting end signal is detected. The condensing pressure of the air conditioner is determined based on the indoor unit coil temperature.

[0112] Optionally, the control module 302 is further configured to start the compressor and enter the heating mode after determining that the condensing pressure is less than the second preset condensing pressure.

[0113] Optionally, the acquisition module 301 is specifically used to continuously acquire the condensing pressure of the air conditioner through a preset period.

[0114] Figure 5 This is a structural schematic diagram of the defrosting control device provided in this application. Figure 5 As shown, this application provides a defrosting control device 400, which includes: a receiver 401, a transmitter 402, a processor 403, and a memory 404.

[0115] Receiver 401 is used to receive instructions and data;

[0116] Transmitter 402 is used to send commands and data;

[0117] Memory 404 is used to store instructions executed by the computer;

[0118] The processor 403 is used to execute computer execution instructions stored in the memory 404 to implement the various steps of the defrosting control method in the above embodiments. For details, please refer to the relevant descriptions in the foregoing embodiments of the defrosting control method.

[0119] Alternatively, the memory 404 can be either standalone or integrated with the processor 403.

[0120] When the memory 404 is set up independently, the electronic device also includes a bus for connecting the memory 404 and the processor 403.

[0121] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the defrosting control method performed by the defrosting control device described above.

[0122] It will be understood by those skilled in the art that all or some of the steps, systems, or apparatuses disclosed above, and their functional modules / units, can be implemented as software, firmware, hardware, or suitable combinations thereof. In hardware implementations, the division between functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed collaboratively by several physical components. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit (ASIC). Such software may be distributed on a computer-readable medium, which may include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0123] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it is readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. The above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A defrosting control method, characterized in that, include: When a defrosting start signal is detected, the condensing pressure corresponding to the outdoor unit coil temperature of the air conditioner is continuously acquired. The fan speed is controlled according to the condensing pressure; wherein, if the condensing pressure is greater than a first preset condensing pressure, the fan speed is increased; the increased fan speed varies with the condensing pressure. If the condensing pressure is between the first preset condensing pressure and the second preset condensing pressure, the fan is controlled to maintain the original air speed; the original air speed is the air speed of the fan when the air speed is not increased. When the condensing pressure is determined to be less than the second preset condensing pressure, the four-way valve reverses to enter the defrosting operation; the four-way valve is used for switching between heating and cooling. When the defrosting end signal is detected, the condensing pressure corresponding to the indoor unit coil temperature of the air conditioner is continuously acquired. Repeat the step of controlling the fan speed according to the condensing pressure, so that when the condensing pressure is determined to be less than the second preset condensing pressure, the compressor is started and the heating mode is entered.

2. The method according to claim 1, characterized in that, After determining that the condensing pressure is less than the second preset condensing pressure, the method further includes: The fan is stopped and the defrosting process begins.

3. The method according to claim 1, characterized in that, The continuous acquisition of the condensing pressure of the air conditioner includes: The condensing pressure of the air conditioner is continuously measured at a preset cycle.

4. A defrosting control device, characterized in that, include: The acquisition module is used to continuously acquire the condensing pressure corresponding to the outdoor unit coil temperature of the air conditioner when a defrosting start signal is detected. The control module is used to control the fan speed according to the condensing pressure; wherein, if the condensing pressure is greater than a first preset condensing pressure, the fan speed is increased; the increased fan speed changes with the condensing pressure. If the condensing pressure is between the first preset condensing pressure and the second preset condensing pressure, the fan is controlled to maintain the original air speed; the original air speed is the air speed of the fan when the air speed is not increased. When the condensing pressure is determined to be less than the second preset condensing pressure, the four-way valve reverses to enter the defrosting operation; the four-way valve is used for switching between heating and cooling. The acquisition module is also used to continuously acquire the condensing pressure corresponding to the indoor unit coil temperature of the air conditioner when a defrosting end signal is detected. The control module is also used to repeatedly execute the step of controlling the fan speed according to the condensing pressure, so as to start the compressor and enter the heating mode when it is determined that the condensing pressure is less than the second preset condensing pressure.

5. A defrosting control device, characterized in that, include: Memory; processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory to implement the defrosting control method as described in any one of claims 1-3.

6. A computer storage medium, characterized in that, The computer storage medium stores computer execution instructions, which, when executed by a processor, are used to implement the defrosting control method as described in any one of claims 1-3.

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