Control method and device of air conditioner, storage medium and electronic equipment, air conditioner

CN117404769BActive Publication Date: 2026-08-21GD MIDEA AIR CONDITIONING EQUIP CO LTD
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Patent Information

Application Number
CN202210806489.6
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-07-08
Publication Date
2026-08-21
Estimated Expiration
2042-07-08

AI Technical Summary

Technical Problem

[0002]相关技术中,采用逆循环对室外机进行除霜,在除霜前后切换四通阀时,会出现较大的四通阀切换的异响,且除霜过程中存在较大的冷媒音

Benefits of technology

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, one objective of this invention is to propose a control method for an air conditioner that employs segmented control for defrosting, balancing system pressure and defrosting effect according to each stage of the defrosting process, thereby optimizing refrigerant noise during defrosting and reducing abnormal noise generated by switching the four-way valve before and after defrosting.

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Abstract

The application discloses a control method and device of an air conditioner, a storage medium, an electronic device and the air conditioner. The method comprises the following steps: when a defrosting signal is received in the heating operation of the air conditioner, the air conditioner is controlled to enter a defrosting mode, and an expansion valve of the air conditioner is adjusted to a first preset opening degree; after a first preset time, the air conditioner is controlled to switch a four-way valve; whether the air conditioner exits the defrosting mode is determined according to the outdoor coil temperature of the air conditioner; if yes, the air conditioner is controlled to exit the defrosting mode. The defrosting is performed in a segmented control mode, the system pressure and the defrosting effect are balanced according to each link of the defrosting process, so that the refrigerant sound in the defrosting process and the abnormal sound generated by switching the four-way valve before and after defrosting are optimized.
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Description

Technical Field

[0001] This invention relates to the field of air conditioner technology, and more particularly to an air conditioner control method, device and storage medium, electronic device and air conditioner. Background Technology

[0002] In related technologies, reverse circulation is used to defrost the outdoor unit. When switching the four-way valve before and after defrosting, there will be a loud abnormal noise from the four-way valve switching, and there will be a loud refrigerant noise during the defrosting process. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, one objective of this invention is to propose a control method for an air conditioner that employs segmented control for defrosting, balancing system pressure and defrosting effect according to each stage of the defrosting process, thereby optimizing refrigerant noise during defrosting and reducing abnormal noise generated by switching the four-way valve before and after defrosting.

[0004] The second objective of this invention is to provide a control device for an air conditioner.

[0005] A third objective of this invention is to provide a computer-readable storage medium.

[0006] The fourth objective of this invention is to provide an electronic device.

[0007] The fifth objective of this invention is to provide an air conditioner.

[0008] To achieve the above objectives, a first aspect of the present invention provides a control method for an air conditioner, the method comprising: when the air conditioner receives a defrost signal during heating operation, controlling the air conditioner to enter a defrost mode and adjusting the expansion valve of the air conditioner to a first preset opening degree; after a first preset time, controlling the air conditioner to switch a four-way valve; determining whether the air conditioner should exit the defrost mode based on the outdoor coil temperature of the air conditioner; if so, controlling the air conditioner to exit the defrost mode.

[0009] According to the control method of the air conditioner of the present invention, a segmented control method is adopted for defrosting. The system pressure and defrosting effect are balanced according to each stage of the defrosting process, so as to optimize the refrigerant noise during the defrosting process and the abnormal noise generated by the four-way valve before and after defrosting.

[0010] In addition, the air conditioner control method proposed in the above embodiments of the present invention may also have the following additional technical features:

[0011] According to one embodiment of the present invention, while controlling the expansion valve to open to the first preset opening degree, the method further includes: adjusting the operating frequency of the air conditioner compressor to a first preset frequency, adjusting the operating speed of the indoor fan to a first preset speed, adjusting the operating speed of the outdoor fan to 0, and maintaining this for a second preset time, and then adjusting the operating speed of the indoor fan to 0 and maintaining this for a third preset time; wherein, the first preset time is the sum of the second preset time and the third preset time.

[0012] According to one embodiment of the present invention, after switching the four-way valve, the method further includes: waiting for a fourth preset time, adjusting the operating frequency of the compressor to a second preset frequency, and adjusting the opening degree of the expansion valve to a second preset opening degree, wherein the second preset frequency is greater than or equal to the first preset frequency, and the second preset opening degree is less than the first preset opening degree.

[0013] According to one embodiment of the present invention, determining whether the air conditioner exits the defrosting mode based on the outdoor coil temperature includes: when the outdoor coil temperature is greater than a first preset temperature, adjusting the operating frequency of the compressor to a third preset frequency and adjusting the opening degree of the expansion valve to a third preset opening degree, wherein the third preset frequency is less than the second preset frequency and the third preset opening degree is less than the second preset opening degree; when the outdoor coil temperature is greater than the second preset temperature, adjusting the operating frequency of the compressor to 0 and adjusting the opening degree of the expansion valve to the first preset opening degree, and maintaining this for a fifth preset time, determining that the air conditioner exits the defrosting mode, wherein the second preset temperature is greater than the first preset temperature.

[0014] According to one embodiment of the present invention, the second preset frequency is negatively correlated with the outdoor ambient temperature.

[0015] According to one embodiment of the present invention, during the second preset time period, when the outdoor coil temperature is greater than the second preset temperature, the air conditioner is controlled to exit the defrosting mode.

[0016] To achieve the above objectives, a second aspect of the present invention provides a control device for an air conditioner, the device comprising: a first control module, configured to control the air conditioner to enter a defrost mode and adjust the expansion valve of the air conditioner to a first preset opening degree when a defrost signal is received during heating operation; a second control module, configured to control the air conditioner to switch a four-way valve after a first preset time; a determination module, configured to determine whether the air conditioner has exited the defrost mode based on the outdoor coil temperature of the air conditioner; and a third control module, configured to control the air conditioner to exit the defrost mode if the defrost mode is exited.

[0017] To achieve the above objectives, a third aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the air conditioner control method as proposed in the first aspect of the present invention.

[0018] To achieve the above objectives, a fourth aspect of the present invention provides an electronic device including a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, it implements the control method for an air conditioner as proposed in the first aspect of the embodiment.

[0019] To achieve the above objectives, a fifth aspect of the present invention provides an air conditioner, including a control device for an air conditioner as provided in the second aspect of the present invention, or an electronic device as provided in the fourth aspect of the present invention.

[0020] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] Figure 1 This is a flowchart of an air conditioner control method according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of an air conditioner according to an embodiment of the present invention;

[0023] Figure 3 This is a flowchart of a control method for an air conditioner according to a specific embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the control device of an air conditioner according to an embodiment of the present invention;

[0025] Figure 5 This is a schematic diagram of an air conditioner according to an embodiment of the present invention. Detailed Implementation

[0026] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0027] The following will refer to the instruction manual appendix. Figure 1-5 The present invention provides a detailed description of the control method, device, storage medium, electronic device, and air conditioner of the present invention, as well as specific implementation methods.

[0028] Figure 1This is a flowchart of an air conditioner control method according to an embodiment of the present invention. Figure 1 As shown, the control method for an air conditioner may include:

[0029] S1, when the air conditioner receives a defrost signal during heating operation, control the air conditioner to enter defrost mode and adjust the air conditioner's expansion valve to the first preset opening degree.

[0030] Specifically, when the air conditioner receives a defrost signal during heating operation, it is controlled to enter defrost mode. To avoid significant noise from the four-way valve switching before and after entering defrost mode, the expansion valve of the air conditioner is adjusted to the first preset opening degree before switching the four-way valve. For better results, the first preset opening degree can be the maximum opening degree when the expansion valve is fully open, so as to utilize the hot air after the refrigerant is slightly throttled to perform defrosting operation on the outdoor unit.

[0031] In embodiments of the present invention, such as Figure 3 As shown, while controlling the expansion valve to open to the first preset opening degree, the control method of the air conditioner may also include:

[0032] Adjust the operating frequency of the air conditioner compressor to the first preset frequency, adjust the operating speed of the indoor fan to the first preset speed, adjust the operating speed of the outdoor fan to 0, and maintain it for the second preset time. Then, adjust the operating speed of the indoor fan to 0 and maintain it for the third preset time. The first preset time is the sum of the second preset time and the third preset time.

[0033] Specifically, while adjusting the expansion valve of the air conditioner to its maximum opening when fully open, the operating frequency of the air conditioner's compressor is adjusted to a first preset frequency, the operating speed of the indoor fan is adjusted to a first preset speed, wherein the first preset speed is the speed value of the indoor fan in silent mode, and the operating speed of the outdoor fan is adjusted to 0. The states of the expansion valve, compressor, indoor fan and outdoor fan of the air conditioner are maintained unchanged for a second preset time, so as to use the hot air after the refrigerant is slightly throttled to perform defrosting operation on the outdoor unit.

[0034] The first preset frequency can be 60Hz, and the second preset time is 1 minute. It should be noted that the first preset frequency and the first preset speed can be set to corresponding values ​​according to different air conditioner models.

[0035] More specifically, after the second preset time, the indoor fan's operating speed is adjusted to 0, the expansion valve remains at its maximum opening, the compressor's operating frequency remains at the first preset frequency, and the outdoor fan's operating speed remains at 0. The states of the air conditioner's expansion valve, compressor, indoor fan, and outdoor fan remain unchanged for a third preset time, so that the air conditioner pressure drops smoothly, making full use of the residual heat during the air conditioner's heating operation while reducing the valve reversing noise caused by switching the four-way valve. For example, the third preset time can be 30 seconds.

[0036] In an embodiment of the present invention, during a second preset time period, when the outdoor coil temperature is greater than the second preset temperature, the air conditioner is controlled to exit the defrosting mode.

[0037] Specifically, when the expansion valve of the air conditioner is adjusted to its maximum opening when fully open, the operating frequency of the air conditioner's compressor is adjusted to the first preset frequency, the operating speed of the indoor fan is adjusted to the silent mode speed value of the indoor fan, and the operating speed of the outdoor fan is adjusted to 0, and the states of the expansion valve, compressor, indoor fan, and outdoor fan of the air conditioner remain unchanged for a second preset time, when the outdoor coil temperature is detected to be higher than the second preset temperature, that is, when the frost on the outdoor unit is removed by the residual heat during the heating operation of the air conditioner, the air conditioner is controlled to exit the defrosting mode and enter the normal heating mode.

[0038] S2, after the first preset time, control the air conditioner to switch the four-way valve.

[0039] Specifically, after the first preset time, that is, while using the residual heat of the air conditioner during heating to defrost the outdoor unit and allowing the pressure of the internal system of the air conditioner to drop steadily, if the frost on the outdoor unit has not been removed by the residual heat of the air conditioner during heating, the four-way valve is switched to effectively reduce the valve reversal noise caused by switching the four-way valve.

[0040] In an embodiment of the present invention, as shown in 3, after switching the four-way valve, the method may further include: waiting for a fourth preset time, adjusting the operating frequency of the compressor to a second preset frequency, and adjusting the opening of the expansion valve to a second preset opening, wherein the second preset frequency is greater than or equal to the first preset frequency, and the second preset opening is less than the first preset opening.

[0041] In an embodiment of the present invention, the second preset frequency is negatively correlated with the outdoor ambient temperature.

[0042] If the frost on the outdoor unit is not removed by the residual heat during the air conditioner's heating operation within the first preset period, reverse circulation defrosting is used. Specifically, after switching the four-way valve, wait for the fourth preset time. The fourth preset time can be 10 seconds.

[0043] More specifically, after the fourth preset time, the compressor's operating frequency is adjusted to the second preset frequency, the expansion valve's opening is adjusted to the second preset opening, and the indoor fan's operating speed and the outdoor fan's operating speed remain at 0. The second preset frequency is negatively correlated with the outdoor ambient temperature; that is, appropriately reducing the defrosting frequency when the outdoor ambient temperature is high can effectively improve refrigerant noise during the defrosting process.

[0044] As a specific embodiment, the relationship between the second preset frequency f2 and the outdoor ambient temperature T4 can be: f2 = a1(T4-2) + b1. Where a1 = -2.2, b1 = 60, meaning b1 can be the value of the first preset frequency. When a1 = -2.2, b1 = 60, and f2 = -2.2(T4-2) + 60, the range of f2 can be 60 ≤ f2 ≤ 80.

[0045] It should be noted that the second preset frequency can be set to a corresponding value according to different air conditioner models.

[0046] S3 determines whether the air conditioner should exit defrost mode based on the outdoor coil temperature.

[0047] Specifically, during the reverse-cycle defrosting process, the outdoor unit can be completely defrosted based on the detected outdoor coil temperature. If the outdoor unit is not completely defrosted, the defrosting operation continues. Once the outdoor unit is defrosted, the air conditioner is controlled to exit defrosting mode.

[0048] S4, if yes, then control the air conditioner to exit defrost mode.

[0049] Specifically, after confirming that the outdoor unit has been completely defrosted, control the air conditioner to exit defrosting mode.

[0050] In an embodiment of the present invention, as shown in 3, determining whether the air conditioner should exit defrost mode based on the outdoor coil temperature may include:

[0051] When the outdoor coil temperature is higher than the first preset temperature, the compressor operating frequency is adjusted to the third preset frequency and the expansion valve opening is adjusted to the third preset opening. The third preset frequency is lower than the second preset frequency and the third preset opening is lower than the second preset opening.

[0052] When the outdoor coil temperature is higher than the second preset temperature, the compressor's operating frequency is adjusted to 0, the expansion valve opening is adjusted to the first preset opening, and after maintaining this for a fifth preset time, the air conditioner is confirmed to exit the defrosting mode. The second preset temperature is higher than the first preset temperature.

[0053] Specifically, when the outdoor coil temperature is higher than the first preset temperature but lower than the second preset temperature, it indicates that the outdoor unit has been basically defrosted. At this time, the compressor's operating frequency is adjusted to a third preset frequency, where the third preset frequency is lower than the second preset frequency (i.e., the compressor's operating frequency is reduced), and the expansion valve opening is adjusted to a third preset opening, where the third preset opening is lower than the second preset opening (i.e., the expansion valve opening is reduced). The indoor fan speed and the outdoor fan speed remain at 0, reducing the internal system pressure of the air conditioner and minimizing the valve reversal noise caused by subsequent switching of the four-way valve. For example, the third preset frequency can be 0.85 times the second preset frequency, the third preset opening can be 0.9 times the second preset opening, and the first preset temperature can be 0°C. It should be noted that the third preset frequency can be set to a corresponding value according to different air conditioner models.

[0054] More specifically, when the outdoor coil temperature exceeds the second preset temperature, it indicates that the outdoor unit has been completely defrosted. The compressor's operating frequency is adjusted to 0, meaning the compressor's operating frequency is reduced and adjusted to zero. The expansion valve opening is adjusted to the first preset opening, i.e., the expansion valve is adjusted to its maximum opening when fully open. The indoor fan speed and outdoor fan speed remain at 0. This state of the air conditioner is maintained for the fifth preset time, reducing the internal system pressure of the air conditioner and minimizing the valve reversal noise caused by subsequent switching of the four-way valve. After the fifth preset time, the air conditioner exits defrost mode. For example, the fifth preset time can be 30 seconds, and the second preset temperature can be 12°C.

[0055] The air conditioner control method of this invention adopts a segmented control approach for defrosting. It balances system pressure and defrosting effect according to each stage of the defrosting process to optimize refrigerant noise during defrosting and reduce abnormal noise generated by switching the four-way valve before and after defrosting.

[0056] The present invention also proposes a control device for an air conditioner.

[0057] Figure 4 This is a schematic diagram of the control device of an air conditioner according to an embodiment of the present invention. Figure 4 As shown, the control device 100 of the air conditioner may include a first control module 10, a second control module 20, a determination module 30, and a third control module 40.

[0058] The first control module 10 is used to control the air conditioner to enter the defrost mode when it receives a defrost signal during heating operation, and to adjust the expansion valve of the air conditioner to the first preset opening degree; the second control module 20 is used to control the air conditioner to switch the four-way valve after a first preset time; the determination module 30 is used to determine whether the air conditioner should exit the defrost mode based on the outdoor coil temperature of the air conditioner; and the third control module 40 is used to control the air conditioner to exit the defrost mode if the temperature is the same.

[0059] It should be noted that other specific embodiments of the control device of the air conditioner in the embodiments of the present invention can be found in the specific embodiments of the control method of the air conditioner in the above embodiments of the present invention.

[0060] The control device of the air conditioner in this embodiment of the invention adopts a segmented control method for defrosting. It balances the system pressure and defrosting effect according to each stage of the defrosting process, so as to optimize the refrigerant noise during the defrosting process and the abnormal noise generated by the four-way valve before and after defrosting.

[0061] The present invention also proposes a computer-readable storage medium.

[0062] In this embodiment, a computer program is stored on a computer-readable storage medium. The computer program corresponds to the control method of the air conditioner described above. When executed by a processor, the control method of the air conditioner described above is implemented.

[0063] The present invention also proposes an electronic device.

[0064] In this embodiment, the electronic device includes a processor, a memory, and a computer program stored in the memory. When the processor executes the computer program, it implements the above-described air conditioner control method.

[0065] The present invention also proposes an air conditioner.

[0066] Figure 5 This is a schematic diagram of an air conditioner according to an embodiment of the present invention. Figure 5 As shown, the air conditioner 200 may include the control device 100 of the air conditioner as described above.

[0067] In another embodiment of the invention, the air conditioner 200 may include electronic devices as described above.

[0068] The air conditioner 200 of this embodiment of the invention uses the control device 100 or electronic device of the air conditioner to perform defrosting in a segmented control manner. The system pressure and defrosting effect are balanced according to each stage of the defrosting process, so as to optimize the refrigerant noise during the defrosting process and the abnormal noise generated by the four-way valve before and after defrosting.

[0069] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0070] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0071] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0072] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0073] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0074] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0075] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0076] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A control method for an air conditioner, characterized in that, The method includes: When the air conditioner receives a defrost signal during heating operation, it controls the air conditioner to enter defrost mode and adjusts the expansion valve of the air conditioner to the first preset opening degree. After the first preset time, control the air conditioner to switch the four-way valve; Determine whether the air conditioner should exit the defrost mode based on the outdoor coil temperature of the air conditioner; If so, then control the air conditioner to exit the defrosting mode; While controlling the expansion valve to open to the first preset opening degree, the method further includes: The operating frequency of the air conditioner compressor is adjusted to a first preset frequency, the operating speed of the indoor fan is adjusted to a first preset speed, the operating speed of the outdoor fan is adjusted to 0, and maintained for a second preset time. Then the operating speed of the indoor fan is adjusted to 0 and maintained for a third preset time. Wherein, the first preset time is the sum of the second preset time and the third preset time, wherein the second preset time is 1 minute; After switching the four-way valve, the following is also included: After waiting for a fourth preset time, the operating frequency of the compressor is adjusted to a second preset frequency, and the opening of the expansion valve is adjusted to a second preset opening, wherein the second preset frequency is greater than or equal to the first preset frequency, and the second preset opening is less than the first preset opening; The step of determining whether the air conditioner should exit the defrost mode based on the outdoor coil temperature includes: When the outdoor coil temperature is greater than the first preset temperature, the operating frequency of the compressor is adjusted to the third preset frequency, and the opening degree of the expansion valve is adjusted to the third preset opening degree, wherein the third preset frequency is less than the second preset frequency, and the third preset opening degree is less than the second preset opening degree; When the outdoor coil temperature is greater than the second preset temperature, the compressor operating frequency is adjusted to 0, the expansion valve opening is adjusted to the first preset opening, and after maintaining this for a fifth preset time, the air conditioner is determined to exit the defrosting mode, wherein the second preset temperature is greater than the first preset temperature.

2. The control method for an air conditioner according to claim 1, characterized in that, The second preset frequency is negatively correlated with the outdoor ambient temperature.

3. The control method for an air conditioner according to claim 1, characterized in that, During the second preset time period, when the outdoor coil temperature is greater than the second preset temperature, the air conditioner is controlled to exit the defrosting mode.

4. A control device for an air conditioner, suitable for use with the control method of any one of claims 1-3, characterized in that, The device includes: The first control module is used to control the air conditioner to enter the defrost mode when it receives a defrost signal during heating operation, and to adjust the expansion valve of the air conditioner to a first preset opening degree. The second control module is used to control the air conditioner to switch the four-way valve after a first preset time. The determination module is used to determine whether the air conditioner has exited defrost mode based on the outdoor coil temperature of the air conditioner. The third control module is used to control the air conditioner to exit the defrosting mode if the condition is met.

5. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the control method for the air conditioner as described in any one of claims 1-3.

6. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the computer program is executed by the processor, it implements the control method for the air conditioner as described in any one of claims 1-3.

7. An air conditioner, characterized in that, Includes the control device for an air conditioner as described in claim 4, or the electronic device as described in claim 6.

Citation Information

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