Deicing control method and control device, deicing structure, air conditioner and outdoor unit, storage medium

Abstract

This invention discloses a defrosting control method and device, a defrosting structure, an air conditioner and an outdoor unit, and a storage medium. The outdoor unit of the air conditioner includes a heat transfer device configured to conduct waste heat from the heating element in the outdoor unit for defrosting the outdoor heat exchanger. The defrosting control method includes: during the air conditioner's heating operation, determining whether preset defrosting conditions are met, the preset defrosting conditions including the temperature of the heating element reaching a set temperature; and when the preset defrosting conditions are met, controlling the heat transfer device to start heat transfer. During the air conditioner's heating operation, the waste heat from the heating element in the outdoor unit is used to defrost the outdoor heat exchanger, preventing frost buildup on the chassis of the outdoor unit and thus affecting its normal and safe operation.

Description

Technical Field

[0001] This invention relates to, but is not limited to, the field of air conditioner technology, and particularly to, but is not limited to, a defrosting control method for an air conditioner, a defrosting control device for an air conditioner, a defrosting structure for an outdoor unit, an outdoor unit of an air conditioner, an air conditioner, and a storage medium. Background Technology

[0002] Superhydrophobic coating technology, applied to the surface of the heat exchanger in the outdoor unit of an air conditioner, brings many benefits such as delaying the frosting cycle, accelerating defrosting, increasing low-temperature heating capacity, and improving low-temperature heating performance. However, it also introduces some new problems. Due to the low surface tension of the superhydrophobic surface of the heat exchanger, during the defrosting process, the frost layer does not have enough time to completely melt into water before flakes off in patches and accumulates on the chassis of the outdoor unit. If this frost is not removed in time, the ice buildup on the chassis will increase, affecting the normal and safe operation of the outdoor unit.

[0003] Currently, the industry lacks effective solutions to the problem of chassis ice buildup caused by defrosting of superhydrophobic outdoor heat exchangers.

[0004] In some technologies, the use of chassis electric heating belts for de-icing is mainly to solve the problem that defrosting water from outdoor heat exchangers coated with hydrophilic coatings freezes in low-temperature environments, thereby blocking the chassis drain outlet and causing poor chassis drainage.

[0005] The chassis electric heating defrosting method is not suitable for defrosting superhydrophobic outdoor heat exchangers, and electric heating defrosting also has problems such as low efficiency, high energy consumption, and poor safety. Summary of the Invention

[0006] The main objective of this invention is to provide a defrosting control method for air conditioners, which solves the problem that the superhydrophobic outdoor heat exchanger cannot drain water due to frost shedding off in large pieces and accumulating on the chassis of the outdoor unit, blocking the drain hole. At the same time, it also solves the problems of high energy consumption and poor safety associated with using electric heating for defrosting.

[0007] The technical solution of the present invention is as follows:

[0008] A defrosting control method for an air conditioner, wherein the outdoor unit of the air conditioner includes a heat transfer device, the heat transfer device being configured to conduct waste heat from the heating device in the outdoor unit for defrosting of the outdoor unit;

[0009] The control method includes:

[0010] During the heating operation of the air conditioner, it is determined whether the preset defrosting conditions are met. The preset defrosting conditions include the temperature of the heating device reaching the set temperature.

[0011] When the preset de-icing conditions are met, the heat transfer device is controlled to start heat transfer.

[0012] A defrosting control device for an air conditioner includes a processor, a memory, and a computer program stored in the memory and executable on the processor. When the computer program is executed by the processor, it implements the steps of the defrosting control method described above.

[0013] An outdoor unit de-icing structure includes: an outdoor heat exchanger and a heat transfer device. The heat transfer device is configured to conduct waste heat from the heating element in the outdoor unit for de-icing. A first end of the heat transfer device is configured to contact the heating element, and a second end is configured at one end of the outdoor heat exchanger near the chassis of the outdoor unit.

[0014] An outdoor unit of an air conditioner includes a defrosting control device, a heating element, a temperature sensor, and the aforementioned defrosting structure of the outdoor unit.

[0015] The temperature sensor is configured to detect the temperature of the heating device;

[0016] The de-icing control device is configured to control the operation of the heat transfer device of the de-icing structure based on the detection results of the temperature sensor.

[0017] An air conditioner, comprising the outdoor unit of the air conditioner described above.

[0018] A non-transient computer-readable storage medium storing a computer program executable on a processor, wherein the computer program, when executed by the processor, implements the steps of the above-described de-icing control method.

[0019] In this embodiment of the invention, during the heating operation of the air conditioner, the temperature of the heating device in the outdoor unit is obtained and it is determined whether the temperature of the heating device has reached the set temperature. When the temperature of the heating device reaches the set temperature, the heat transfer device is controlled to start heat transfer, and the residual heat of the heating device in the outdoor unit is transferred to the outdoor unit for de-icing, so as to prevent the frost falling off the outdoor heat exchanger from accumulating on the chassis of the outdoor unit and thus affecting the normal and safe operation of the outdoor unit.

[0020] Other features and advantages of this application will be set forth in the following description. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0022] Figure 1This is a flowchart of an air conditioner defrosting control method according to an embodiment of the present invention;

[0023] Figure 2 This is a flowchart of a defrosting control method for an air conditioner according to another embodiment of the present invention;

[0024] Figure 3 This is a partial structural schematic diagram of the outdoor unit of an air conditioner according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of another partial structure of the outdoor unit of an air conditioner according to an embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the heat transfer device of an air conditioner according to an embodiment of the present invention.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1-Compressor, 2-Electrical control module, 3-Outdoor heat exchanger, 31-Windward side, 32-Leisure side, 4-Heat transfer device, 40-Heat pipe, 41-First heat transfer device, 42-Second heat transfer device, 43-Evaporation section, 44-Intermediate section, 45-Condensation section, 46-Heat pipe shell, 47-Liquid wick, 5-Guide component, 51-Guide plate, 511-Guide surface, 52-Support plate, 6-Frost collector, 61-Frost collection groove, 62-First plate, 621-Ventilation hole, 63-Second plate, 71-First temperature sensor, 72-Second temperature sensor. Detailed Implementation

[0029] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0030] This invention provides a method for controlling the defrosting of an air conditioner.

[0031] like Figure 3 As shown, the air conditioner includes an outdoor unit, which includes a heat transfer device 4. The heat transfer device 4 is configured to conduct waste heat from the heating element in the outdoor unit for de-icing, i.e., removing frost, frost, etc., that has detached from the outdoor heat exchanger 3. This detached frost or frost typically accumulates at the bottom of the outdoor heat exchanger 3 or on the chassis of the outdoor unit. In some exemplary embodiments, a first end of the heat transfer device 4 is in contact with the heating element, and a second end is located at one end of the outdoor heat exchanger 3 near the chassis of the outdoor unit. This end of the outdoor heat exchanger 3 near the chassis of the outdoor unit is the lower end (or bottom end) of the outdoor heat exchanger 3. The surface (e.g., fins) of the outdoor heat exchanger 3 is coated with a hydrophobic coating (e.g., a superhydrophobic coating).

[0032] like Figure 1As shown, the de-icing control method includes steps S102-S104:

[0033] Step S102: During the heating operation of the air conditioner, determine whether the preset defrosting conditions are met. The preset defrosting conditions include the heating element reaching the set temperature.

[0034] Step S104: When the preset de-icing conditions are met, control the heat transfer device to start heat transfer.

[0035] In this embodiment of the invention, during the heating operation of the air conditioner, the operating parameters of the outdoor unit (including the temperature of the heating element in the outdoor unit) are acquired, and it is determined whether the outdoor unit meets the preset defrosting conditions. The preset defrosting conditions include the heating element temperature reaching a set temperature, i.e., it is necessary to determine whether the heating element temperature has reached the set temperature. When the preset defrosting conditions are met, the heating element temperature reaches the set temperature, indicating that the heating element temperature is high and waste heat can be recovered and utilized. At this time, the heat transfer device 4 is controlled to start heat transfer, transferring the waste heat of the heating element to the outdoor unit for defrosting, preventing frost that has fallen off the outdoor heat exchanger 3 from accumulating at the bottom of the outdoor heat exchanger 3 or on the chassis of the outdoor unit, thereby affecting the normal and safe operation of the outdoor unit.

[0036] This invention proposes a solution that uses a heat transfer device 4 to recover heat from the heating element in the outdoor unit to prevent ice buildup on the outdoor unit chassis. This ensures that the bottom area of ​​the outdoor heat exchanger 3 is heated during operation, thereby preventing frost from accumulating on the bottom of the outdoor heat exchanger 3 or on the outdoor unit chassis during defrosting, which would affect the safety and reliability of the entire unit. Compared with electric heating defrosting, the defrosting method of this invention is more efficient, energy-saving, and safer.

[0037] It should be noted that during heating operation, the air conditioner can be in either heating mode or defrost mode. In heating mode, the air conditioner switches the reversing valve and changes the refrigerant flow direction to enter defrost mode. In this mode, the heat from the refrigerant is used to remove the frost buildup on the outdoor heat exchanger 3, causing the frost layer to detach from the outdoor heat exchanger 3. Regardless of whether the air conditioner is in heating or defrost mode, it can utilize the waste heat from the outdoor unit's heating element for defrosting.

[0038] It should be noted that the preset defrosting conditions may only include the heating element reaching the set temperature. That is, during the heating operation of the air conditioner, as long as the temperature of the heating element reaches the set temperature, the heat transfer device is used to remove the residual heat of the heating element for defrosting. Alternatively, the preset defrosting conditions may include not only the heating element reaching the set temperature, but also the outdoor ambient temperature reaching the third set temperature and / or the outdoor heat exchanger reaching the fourth set temperature. In this case, the icing status of the outdoor unit can be determined by judging whether the outdoor ambient temperature reaches the third set temperature and / or whether the outdoor heat exchanger reaches the fourth set temperature, and then the heat transfer device can be used to remove the residual heat of the heating element for defrosting.

[0039] In some exemplary embodiments, such as Figure 3 As shown, the heating device includes at least one of a compressor 1 and an electronic control module 2, and the heat transfer device 4 includes at least one of a first heat transfer device 41 and a second heat transfer device 42. The first heat transfer device 41 is configured to conduct the waste heat of the compressor 1 for de-icing of the outdoor unit, and the second heat transfer device 42 is configured to conduct the waste heat of the electronic control module 2 for de-icing of the outdoor unit.

[0040] Based on this, the temperature of the heating device in the preset de-icing conditions reaches the set temperature, including: the temperature of the compressor reaches the first set temperature; or, the temperature of the electronic control module reaches the second set temperature.

[0041] In this de-icing control method, the step of controlling the heat transfer device to start heat transfer when the preset de-icing conditions are met includes:

[0042] When the compressor temperature reaches the first set temperature, control the first heat transfer device to start heat transfer; and / or

[0043] When the temperature of the electronic control module reaches the second set temperature, the second heat transfer device is controlled to start heat transfer.

[0044] When the air conditioner is in heating mode, due to the large temperature difference between indoors and outdoors, the compressor 1 has a high pressure ratio and therefore high power. The surface temperature of the compressor casing can remain between 70℃ and 90℃, or even exceed 100℃, during operation. Therefore, the compressor 1 is a huge heat source during heating operation, and this heat will be wasted if it is not used properly. During heating operation, the electronic control module 2 also generates a large amount of heat, which needs to be dissipated promptly to prevent damage to the electronic control module 2 due to high temperatures.

[0045] When the temperature of the compressor casing reaches the set temperature, the first heat transfer device 41 is activated to transfer the heat from the compressor 1 to the bottom of the outdoor heat exchanger 3 for de-icing of the outdoor unit; when the temperature of the electronic control module 2 reaches the set temperature, the second heat transfer device 42 is activated to transfer the heat from the electronic control module 2 to the bottom of the outdoor heat exchanger 3 for de-icing of the outdoor unit.

[0046] The de-icing control method of this invention uses a first heat transfer device 41 and a second heat transfer device 42 to recover and utilize the high-temperature heat from the surface of the compressor housing and / or the heat generated by the electronic control module 2 during compression. The high-temperature heat from the surface of the compressor housing and / or the heat generated by the electronic control module 2 can be conducted to the lower side of the outdoor heat exchanger 3 for de-icing of the outdoor unit. This saves energy and solves the problem of ice accumulation on the chassis of the outdoor unit as well as the heat dissipation problem of the electronic control module 2 and the compressor 1.

[0047] This invention proposes a method to prevent ice buildup on the outdoor unit chassis by utilizing the waste heat of compressor 1 and / or the waste heat of electronic control module 2. This method solves the problem that the superhydrophobic outdoor heat exchanger 3 cannot drain water due to frost layer falling off in whole pieces and accumulating on the outdoor unit chassis, blocking the drain hole. The method can quickly melt and remove the fallen frost layer, ensuring the normal operation of the air conditioner. At the same time, it solves the problems of high energy consumption and poor safety caused by using electric heating for defrosting.

[0048] In some exemplary embodiments, the de-icing control method further includes:

[0049] During the heating operation of the air conditioner, if the temperature of the heating device does not reach the set temperature, and / or if the air conditioner compressor stops or the operating frequency is lower than the preset frequency, the heat transfer device shall be controlled to stop working.

[0050] When the temperature of the heating element does not reach the set temperature, it indicates that the temperature of the heating element is still relatively low and has not yet reached the state of waste heat recovery and utilization. At this time, the heat transfer device 4 is controlled not to transfer heat. For example, when the temperature of the compressor housing surface does not reach the set temperature, it indicates that the temperature of the compressor 1 is still relatively low and has not yet reached the state of waste heat recovery and utilization. At this time, the first heat transfer device 41 is controlled not to transfer heat. When the air conditioner compressor 1 is stopped, or when the operating frequency of the compressor 1 is less than the preset frequency, the temperature of the compressor housing surface is low, and the heat cannot reach the state of recovery and utilization. Therefore, the first heat transfer device 41 is controlled not to transfer heat at this time.

[0051] When the temperature of the electronic control module 2 has not reached the set temperature, it means that the temperature of the electronic control module 2 is still relatively low and has not yet reached the state of waste heat recovery and utilization. At this time, the second heat transfer device 42 is controlled not to transfer heat.

[0052] In some exemplary embodiments, the set temperature ranges from 20°C to 100°C. That is, the first set temperature and the second set temperature range from 20°C to 100°C.

[0053] Of course, the set temperature is not limited to the above range and can be adjusted according to the actual situation.

[0054] In some exemplary embodiments, before determining whether preset de-icing conditions are met, the de-icing control method further includes:

[0055] The air conditioner starts heating and runs for the set duration.

[0056] After the air conditioner has been running in heating mode for the set time, that is, after the compressor 1 has been running for the set time, both the compressor 1 and the electronic control module 2 have been running for a period of time and have generated a certain amount of heat. It can detect whether the temperature of the compressor housing surface and / or the temperature of the electronic control module 2 have reached the set temperature. When the temperature of the compressor housing surface and / or the temperature of the electronic control module 2 reach the set temperature, the waste heat is recovered and utilized. The heat transfer device 4 is controlled to start heat transfer and conduct the waste heat to the bottom of the outdoor heat exchanger 3 for de-icing of the outdoor unit.

[0057] In some exemplary embodiments, the set duration ranges from 1 minute to 10 minutes.

[0058] Of course, the duration is not limited to the above range and can be adjusted according to the actual situation.

[0059] The following is combined Figure 2 This describes the de-icing control method for an air conditioner according to an embodiment of the present invention.

[0060] Step S202: The air conditioner starts heating mode;

[0061] Step S204: Determine whether the compressor has run for the set duration t, that is, whether the air conditioner has been in heating mode for the set duration t. If it has, proceed to step S206; otherwise, continue to run in the current state.

[0062] Step S206: Detect the temperature TY of the compressor housing surface and the temperature TK of the electronic control module;

[0063] Step S208: Compare TY and TK with the set temperature TR to determine whether TY ≥ TR or TK ≥ TR. If TY < TR and TK < TR, it means that the compressor has been running for a short time, the temperature of the compressor casing surface is still relatively low, and the temperature of the electronic control module is also relatively low. It has not yet reached the state of waste heat recovery and utilization. Continue to operate in the original state and return to step S206. If TY ≥ TR or TK ≥ TR, it means that the temperature of the compressor casing surface or the temperature of the electronic control module has reached the set temperature TR. At this time, the heat on the compressor casing surface or the heat of the electronic control module is sufficient for recovery and utilization. At this time, proceed to step S210.

[0064] Step S210: The heat transfer device starts working, outputting the heat from the surface of the compressor housing or the heat from the electronic control module, thereby preventing ice buildup on the chassis of the outdoor unit;

[0065] Step S212: Continuously acquire TY and TK, and compare the values ​​of TY and TK with TR. Determine whether TY < TR and whether TK < TR. If TY ≥ TR or TK ≥ TR, it indicates that the temperature of the compressor casing surface and the temperature of the electronic control module are still at a relatively high level, and waste heat recovery and utilization can continue. At this time, return to step S210. If TY < TR and TK < TR, it indicates that the compressor has stopped or is in another frequency reduction state, the temperature of the compressor casing surface is already very low, and the temperature of the electronic control module is also low, so the state of recovery and utilization cannot be achieved. At this time, execute step S214.

[0066] Step S214: The heat transfer device stops working and the next cycle begins.

[0067] This invention also provides a de-icing control device for an air conditioner, including a processor, a memory, and a computer program stored in the memory and executable on the processor. When the computer program is executed by the processor, it implements the steps of the de-icing control method provided in any of the above embodiments.

[0068] like Figure 3 As shown, this embodiment of the invention also provides a de-icing structure for an outdoor unit, including: an outdoor heat exchanger 3 and a heat transfer device 4.

[0069] The heat transfer device 4 is used to conduct waste heat from the heating element in the outdoor unit for de-icing. The first end of the heat transfer device 4 can contact the heating element, and the second end is located at the end of the outdoor heat exchanger 3 near the chassis of the outdoor unit, that is, the second end of the heat transfer device 4 is located at the lower / bottom end of the outdoor heat exchanger 3. The second end of the heat transfer device 4 can be arranged around the lower end of the outdoor heat exchanger 3 and can be directly or indirectly fixed to the outdoor heat exchanger 3 or the chassis.

[0070] During the heating operation of the air conditioner, the heating element in the outdoor unit generates heat. The heat transfer device 4 comes into contact with the heating element and can recover and utilize the waste heat of the heating element. The waste heat of the heating element can be conducted to the lower side of the outdoor heat exchanger 3 for de-icing of the outdoor unit, preventing frost from accumulating at the bottom of the outdoor heat exchanger 3 or on the chassis of the outdoor unit, thus affecting the normal and safe operation of the outdoor unit.

[0071] In some exemplary embodiments, such as Figure 3 As shown, the heating device includes at least one of a compressor 1 and an electronic control module 2. The waste heat from the compressor 1 and / or the electronic control module 2 can be used for de-icing to prevent ice buildup on the outdoor unit chassis. The electronic control module 2 can control the operation of the compressor 1 (e.g., control the operating frequency of the compressor 1).

[0072] Accordingly, the heat transfer device 4 includes at least one of a first heat transfer device 41 and a second heat transfer device 42. The first end of the first heat transfer device 41 is in contact with the compressor 1, and the second end is located at the bottom of the outdoor heat exchanger 3 and can be arranged around the bottom of the outdoor heat exchanger 3. Therefore, the first heat transfer device 41 can conduct heat from the compressor 1 to the lower side of the outdoor heat exchanger 3 for de-icing. The first end of the second heat transfer device 42 is in contact with the electronic control module 2, and the second end is located at the bottom of the outdoor heat exchanger 3 and can be arranged around the bottom of the outdoor heat exchanger 3. Therefore, the second heat transfer device 42 can conduct heat from the electronic control module 2 to the lower side of the outdoor heat exchanger 3 for de-icing.

[0073] In some exemplary embodiments, the heat transfer device 4 includes a heat pipe 40, and a schematic diagram of the structure of the heat pipe 40 is shown below. Figure 5 As shown. The heat pipe 40 may include a heat pipe housing 46 and a wick 47. The heat pipe housing 46 may be a double-layer structure, and the wick 47 may be disposed within the double-layer structure of the heat pipe housing 46. The heat pipe housing 46 may be filled with a working medium.

[0074] The heat pipe 40 can be divided into an evaporation section 43, a condensation section 45, and an intermediate section 44. The evaporation section 43 can be located at the first end of the heat pipe 40 and is positioned at the heating element, allowing it to contact the heating element. Figure 3 As shown, the evaporation section 43 of the heat pipe of the first heat transfer device 41 can contact the compressor housing, and the evaporation section 43 of the heat pipe of the second heat transfer device 42 can contact the electronic control module 2. The condensation section 45 can be located at the second end of the heat pipe 40 and is arranged near the bottom end of the outdoor heat exchanger 3. The condensation section 45 can be arranged around the bottom end of the outdoor heat exchanger 40 so as to conduct the heat on the surface of the compressor housing and / or the heat generated by the electronic control module 2 to the lower side of the outdoor heat exchanger 3. The intermediate section 44 is used to connect the evaporation section 43 and the condensation section 45 so that the working medium can flow between the evaporation section 43 and the condensation section 45.

[0075] The working principle of a heat pipe is as follows: rapid heat transfer is achieved through the evaporation and condensation of the working medium within the heat pipe casing 46. Specifically, during operation, the working medium in the evaporation section 43 absorbs heat from the heating device and evaporates. Driven by a small pressure difference within the heat pipe casing 46, the evaporated vapor flows to the condensation section 45, where it releases heat and condenses into a liquid. The condensed liquid then flows back to the evaporation section 43 under the capillary force of the wick 47 (the flow direction of the working medium within the heat pipe is as follows). Figure 5 (As indicated by the middle arrow). This cycle continues, achieving rapid heat transfer through the phase change of the working medium. The working medium inside the heat pipe is independent of the refrigerant inside the air conditioner and is not connected to it.

[0076] It should be understood that the heat transfer device 4 is not limited to a heat pipe, but can also be other forms; the heat pipe is not limited to Figure 5 The structure shown can also be other structures.

[0077] In some exemplary embodiments, the middle section 44 of the heat pipe 40 is wrapped with a heat insulation layer to reduce heat loss of the working medium as it flows through the middle section 44.

[0078] In some exemplary embodiments, such as Figure 4 As shown, the condenser section 45 of the heat pipe is located on the windward side and / or leeward side of the outdoor heat exchanger 3. Figure 4 The horizontal arrow pointing to the left indicates the wind direction.

[0079] The condensing section 45 of the heat pipe is located on the windward side of the outdoor heat exchanger 3, which can heat and melt the frost accumulated on the windward side of the outdoor heat exchanger 3 to achieve de-icing on the windward side; the condensing section 45 of the heat pipe is located on the leeward side of the outdoor heat exchanger 3, which can heat and melt the frost accumulated on the leeward side of the outdoor heat exchanger 3 to achieve de-icing on the leeward side.

[0080] In some exemplary embodiments, the evaporation section 43 of the heat pipe is curved and can be wound around the heating device.

[0081] The evaporation section 43 of the heat pipe is wrapped around the heating device, which can fix the evaporation section 43 to the heating device to ensure good contact and heat conduction between the evaporation section 43 and the heating device. In addition, the evaporation section 43 is wrapped around the heating device, which can increase the contact area between the evaporation section 43 and the heating device, and increase the heat conduction efficiency and thermal conductivity.

[0082] In some exemplary embodiments, the outdoor heat exchanger 3 is L-shaped, and the condensing section 45 of the heat pipe is L-shaped, such as... Figure 3 As shown.

[0083] The outdoor heat exchanger 3 is L-shaped, and the condensing section 45 of the heat pipe is also L-shaped and is located on the lower side of the outdoor heat exchanger 3. The shape of the condensing section 45 is adapted to the shape of the outdoor heat exchanger 3 so that the condensing section 45 can effectively heat the lower side of the outdoor unit's heat exchange efficiency and prevent frost accumulation.

[0084] Of course, the outdoor heat exchanger 3 can also be in other shapes, such as U-shaped or straight. Correspondingly, the condensing section 45 of the heat pipe can also be U-shaped or straight, so that the shape of the outdoor heat exchanger 3 matches the shape of the condensing section 45.

[0085] In some exemplary embodiments, the evaporation section 43 of the heat pipe of the first heat transfer device 41 is wound around the outside of the compressor housing, and the evaporation section 43 of the heat pipe of the second heat transfer device 42 is wound around the outside of the electronic control module 2 (such as wound around the bottom of the electronic control module 2 or other locations). The condensation section 45 of the heat pipes of the first heat transfer device 41 and the second heat transfer device 42 is placed on the lower side of the outdoor heat exchanger 3, thereby conducting the heat from the surface of the compressor housing and the heat generated by the electronic control module 2 during the operation of the compressor 1 to the lower side of the outdoor heat exchanger 3 for de-icing at the bottom of the outdoor unit, which saves energy and solves the problem of ice accumulation on the chassis of the outdoor unit.

[0086] In some exemplary embodiments, the windward side 31 of the outdoor heat exchanger 3 is exposed and can be used as the exterior surface of the outdoor unit to reduce the amount of material used in the outdoor unit's casing, simplify the structure of the outdoor unit, and thus reduce the overall cost and weight of the unit.

[0087] In some exemplary embodiments, such as Figure 4 As shown, the de-icing structure of the outdoor unit also includes a guide member 5, which is located on the windward side of the outdoor heat exchanger 3. The guide member 5 includes a guide surface 511, which is used to guide away the frost that falls off the windward surface 31 of the outdoor heat exchanger 3, accelerate the shedding of the frost layer on the windward surface 31 of the outdoor heat exchanger 3, and prevent the frost that falls off the windward surface 31 of the outdoor heat exchanger 3 from accumulating on the windward side.

[0088] The guide surface 511 includes one end away from the chassis of the outdoor unit (i.e., the upper end) and one end close to the chassis of the outdoor unit (i.e., the lower end). The upper end of the guide surface 511 abuts against the windward surface 31 of the outdoor heat exchanger 3, and the lower end of the guide surface 511 extends toward the side away from the windward surface 31 of the outdoor heat exchanger 3, so that the guide surface 511 is an inclined surface, which can guide away the frost falling off the windward surface 31 of the outdoor heat exchanger 3.

[0089] In some exemplary embodiments, such as Figure 4 As shown, the angle α between the guide surface 511 and the windward surface 31 of the outdoor heat exchanger 3 is 30° to 60°. For example, the angle α can be 35°, 40°, 45°, 50°, 55°, etc.

[0090] Of course, the angle α between the guide surface 511 and the windward surface 31 of the outdoor heat exchanger 3 is not limited to the above range and can be adjusted according to the actual situation.

[0091] In some exemplary embodiments, such as Figure 4 As shown, the guide member 5 includes a guide plate 51 and a support plate 52. The guide plate 51 is inclined, with its upper end abutting against the windward surface 31 of the outdoor heat exchanger 3 and its lower end away from the windward surface 31 of the outdoor heat exchanger 3. The support plate 52 is supported between the guide plate 51 and the windward surface 31 of the outdoor heat exchanger 3. The support plate 52 can be horizontally positioned, and its two ends can be fixedly connected to the lower side of the guide plate 51 and the lower side of the windward surface 31 of the outdoor heat exchanger 3, respectively. The upper side of the guide plate 51 can be fixedly connected to the windward surface 31 of the outdoor heat exchanger 3. The support plate 52 supports and fixes the guide plate 51 to enhance its structural strength.

[0092] It should be understood that a separate support plate 52 can be installed, or the chassis of the outdoor unit can be used as a support plate to support the guide plate 51.

[0093] The guide plate 51 has a guide surface 511 formed on the side of the guide plate 51 facing away from the windward side 31 of the outdoor heat exchanger 3.

[0094] like Figure 4 As shown, the second end of the heat transfer device 4 (i.e., the condensation section 45) is located within the space enclosed by the guide member 5, the support plate 52, and the windward side 31 of the outdoor heat exchanger 3, to prevent the heat transfer device 4 from being exposed and easily damaged. The second end of the heat transfer device 4 can be fixedly connected to the guide plate 51 so that the heat from the heat transfer device 4 can be conducted to the guide plate 51, melting the frost on the guide plate 51 and preventing frost from condensing on the guide plate 51.

[0095] A hydrophobic coating can be applied to the guide surface 511. In this way, under the action of heat conducted by the heat transfer device 4, the frost can be completely detached from the guide surface 511, preventing frost from condensing on the guide surface 511.

[0096] In some exemplary embodiments, the condenser section 45 of the heat pipe is welded and fixed to the inner plate surface of the guide plate 51 (i.e., the plate surface facing the windward side 31 of the outdoor heat exchanger 3). When the air conditioner is in defrost mode, the frost layer can fall off the outdoor heat exchanger 3 and onto the guide plate 511 when defrosting. At this time, the guide plate 51 is heated, which can accelerate the melting of the frost layer. Under the action of the inclined guide plate 511, the frost layer flows out of the outdoor unit.

[0097] In some exemplary embodiments, such as Figure 4As shown, the de-icing structure of the outdoor unit also includes a defrosting component 6, which is located on the leeward side of the outdoor heat exchanger 3 and is mounted on the chassis of the outdoor unit. A defrosting trough 61 for collecting frost is formed between the defrosting component 6 and the outdoor heat exchanger 3.

[0098] The frost layer that falls off from the leeward side 32 of the outdoor heat exchanger 3 can fall into the frost collection tank 61, preventing the frost layer from scattering inside the outdoor unit and interfering with other components of the outdoor unit (such as the fan), thus affecting the operation of the whole unit.

[0099] In some exemplary embodiments, such as Figure 4 As shown, the defrosting component 6 includes a first plate 62 and a second plate 63 connected to each other, and the first plate 62 and the second plate 63 can be perpendicular to each other. The first plate 62 can be a vertical plate and can be arranged opposite to the leeward side 32 of the outdoor heat exchanger 3, and the first plate 62 can be parallel to the leeward side 32 of the outdoor heat exchanger 3; the second plate 63 can be a horizontal plate and is located between the first plate 62 and the outdoor heat exchanger 3, and the first plate 62, the second plate 63 and the leeward side 32 of the outdoor heat exchanger 3 cooperate to form a defrosting groove 61. The second plate 63 can serve to fix and support the first plate 62 to strengthen the structural strength of the first plate 62.

[0100] It should be understood that the second plate 63 can be set separately, or the chassis of the outdoor unit can be used as the second plate 63 to fix the first plate 62.

[0101] In some exemplary embodiments, such as Figure 4 As shown, the second end (i.e., the condensing section 45) of the heat transfer device 4 is located in the defrosting tank 61. The condensing section 45 of the heat pipe can be welded and fixed to the first plate 62 and / or the second plate 63 of the defrosting component 6 so as to heat the detached frost layer, melt the frost layer into water and drain it away, and prevent the frost layer from accumulating and affecting the heat exchange efficiency of the outdoor heat exchanger 3 and from interfering with the outdoor unit's fan and other components.

[0102] In some exemplary embodiments, such as Figure 4 As shown, the first plate 62 is provided with ventilation holes 621. The diameter of the ventilation holes 621 can be 3mm-5mm. Of course, the diameter of the ventilation holes 621 is not limited to this range and can be adjusted according to the actual situation.

[0103] Ventilation holes 621 are provided on the first plate 62 to reduce the obstruction of the heat exchange area of ​​the outdoor heat exchanger 3 by the first plate 62, so as to ensure the heat exchange of the outdoor heat exchanger 3 when the frost-free layer accumulates.

[0104] In some exemplary embodiments, such as Figure 4 As shown, along the height direction of the outdoor heat exchanger 3, the height H of the first plate 62 is 5cm to 20cm. For example, the height H of the first plate 62 can be 8cm, 10cm, 12cm, 15cm, 18cm, etc.

[0105] The height H of the first plate 62 is 5cm to 20cm, which ensures that the frost collection groove 61 has sufficient height to prevent the falling frost layer from scattering and interfering with other components, while also preventing the height H of the first plate 62 from being too large and thus affecting the heat exchange efficiency of the outdoor heat exchanger 3.

[0106] In some exemplary embodiments, such as Figure 4 As shown, along the direction perpendicular to the leeward side 32 of the outdoor heat exchanger 3, the width W of the second plate 63 is 3cm to 5cm. For example, the width W of the second plate 63 can be 3.5cm, 3.8cm, 4cm, 4.2cm, 4.5cm, 4.8cm, etc.

[0107] The height H of the first plate 62 is 5cm to 20cm, and the width W of the second plate 63 is 3cm to 5cm, so that the frost collection groove 61 formed is large enough to accommodate the falling frost layer and avoid the frost layer from interfering with other components.

[0108] Of course, the height H of the first plate 62 and the width W of the second plate 63 are not limited to the above ranges and can be adjusted according to the actual situation.

[0109] In some exemplary embodiments, the second plate 63 is provided with a drain hole, or there is a drain gap between the second plate 63 and the outdoor heat exchanger 3.

[0110] The second plate 63 is provided with a drain hole, which can directly drain the water after the frost layer in the frost collection tank 61 is melted down through the drain hole. Alternatively, the second plate 63 is not provided with a drain hole, but a drain gap is provided between the second plate 63 and the outdoor heat exchanger 3, through which the melted water can be drained from the bottom of the outdoor heat exchanger 3 to the outside of the casing.

[0111] like Figure 3 As shown in the figure, this embodiment of the invention also provides an outdoor unit of an air conditioner, including: a defrosting control device, a heating device, a temperature sensor, and a defrosting structure.

[0112] The surface of the outdoor heat exchanger 3 may be coated with a hydrophobic coating. For example, the outdoor heat exchanger 3 may be a finned heat exchanger, and its fins may be coated with a hydrophobic coating.

[0113] In the de-icing structure, the first end of the heat transfer device 4 is in contact with the heating device, and the second end is located at one end of the outdoor heat exchanger 3 near the chassis of the outdoor unit (i.e., the bottom or lower end of the outdoor heat exchanger 3), and can be arranged around the end of the outdoor heat exchanger 3 near the chassis of the outdoor unit. When the heating device is working, it generates heat. The heat transfer device 4 is in contact with the heating device, so it can conduct the heat away from the heating device and conduct it to the lower side of the outdoor heat exchanger 3.

[0114] The temperature sensor is set to detect the temperature of the heating device.

[0115] The temperature sensor is electrically connected to the de-icing control device, which is configured to control the operation of the heat transfer device 4 based on the detection results of the temperature sensor.

[0116] During the heating operation of the air conditioner, the defrosting control device controls the temperature sensor to detect the temperature of the heating element in the outdoor unit. The detection result of the temperature sensor can be sent to the defrosting control device, which compares the temperature detected by the temperature sensor with the preset set temperature. When the detected temperature of the heating element reaches the set temperature, it indicates that the temperature of the heating element is high enough to recover and utilize waste heat. At this time, the defrosting control device controls the heat transfer device 4 to start heat transfer, transferring the waste heat of the heating element to the lower side of the outdoor heat exchanger 3 for defrosting of the outdoor unit, preventing frost from accumulating on the bottom of the outdoor heat exchanger 3 or the chassis of the outdoor unit, thus affecting the normal and safe operation of the outdoor unit. When the detected temperature of the heating element does not reach the set temperature, it indicates that the temperature of the heating element is low enough not to reach the state of waste heat recovery and utilization. At this time, the defrosting control device controls the heat transfer device 4 not to start heat transfer.

[0117] In some exemplary embodiments, such as Figure 3 As shown, the heating device includes at least one of a compressor 1 and an electronic control module 2. The waste heat from the compressor 1 and / or the electronic control module 2 can be used for de-icing to prevent ice buildup on the outdoor unit chassis. The electronic control module 2 can control the operation of the compressor 1 (e.g., control the operating frequency of the compressor 1).

[0118] Accordingly, the temperature sensor includes at least one of a first temperature sensor 71 and a second temperature sensor 72. The first temperature sensor 71 can be installed on the compressor housing and is used to detect the temperature of the compressor 1; the second temperature sensor 72 can be installed on the electronic control module 2 and is used to detect the temperature of the electronic control module 2.

[0119] When the first temperature sensor 71 detects that the temperature of the compressor housing has reached the set temperature, the de-icing control device controls the first heat transfer device 41 of the de-icing structure to start heat transfer, so as to conduct the heat of the compressor 1 to the bottom of the outdoor heat exchanger 3 for de-icing of the outdoor unit; when the second temperature sensor 72 detects that the temperature of the electronic control module 2 has reached the set temperature, the de-icing control device controls the second heat transfer device 42 of the de-icing structure to start heat transfer, so as to conduct the heat of the electronic control module 2 to the bottom of the outdoor heat exchanger 3 for de-icing of the outdoor unit.

[0120] In some exemplary embodiments, the de-icing control device and the electronic control module 2 may both be integrated on a single circuit board to form a main control circuit board; or, the de-icing control device and the electronic control module 2 may be integrated on different circuit boards to form two control circuit boards, each implementing different control functions.

[0121] In some exemplary embodiments, the outdoor unit of the air conditioner also includes a control valve disposed on the heat transfer device 4. The control valve may be a solenoid valve and may be electrically connected to a defrosting control device. The defrosting control device can control the operation of the heat transfer device by controlling the on / off state of the solenoid valve, such as controlling the heat pipe 40 to perform or stop heat transfer.

[0122] This invention also provides an air conditioner, including the outdoor unit of the air conditioner provided in any of the above embodiments.

[0123] This invention also provides a non-transient computer-readable storage medium storing a computer program that can run on a processor. When the computer program is executed by the processor, it implements the steps of the de-icing control method provided in any of the above embodiments.

[0124] 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 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.

[0125] 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.

[0126] 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.

[0127] 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 horizontal level less than or equal to the second feature.

[0128] In the description of this specification, the 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 present 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0129] 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.

[0130] 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 above 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 components may be implemented as software executed by a processor, such as a 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.

[0131] Furthermore, in describing representative embodiments, the specification may have presented methods and / or processes as a specific sequence of steps. However, the method or process should not be limited to the specific order of steps described herein, to the extent that it does not depend on such a specific order. As will be understood by those skilled in the art, other sequences of steps are also possible. Therefore, the specific order of steps set forth in the specification should not be construed as a limitation of the claims. Moreover, the claims relating to the method and / or process should not be limited to the steps performed in the order written, and those skilled in the art will readily understand that these orders can be varied and still remain within the spirit and scope of the embodiments of the invention.

Claims

1. A defrosting control method for an air conditioner, characterized in that, The outdoor unit of the air conditioner includes a heat transfer device, which is configured to conduct the waste heat from the heating element in the outdoor unit for de-icing of the outdoor unit. The control method includes: During the heating operation of the air conditioner, it is determined whether the preset defrosting conditions are met. The preset defrosting conditions include the temperature of the heating device reaching the set temperature, the outdoor ambient temperature reaching the third set temperature, and the temperature of the outdoor heat exchanger reaching the fourth set temperature. When the preset de-icing conditions are met, the heat transfer device is controlled to start heat transfer; The heat transfer device has a first end in contact with the heating device and a second end connected to a guide and a defrosting device. The guide is located on the windward side of the outdoor heat exchanger and includes a guide surface that is inclined. The guide surface is used to guide away the frost that falls off the windward side of the outdoor heat exchanger. The defrosting element is located on the leeward side of the outdoor heat exchanger, and a defrosting groove for collecting frost is formed between the defrosting element and the outdoor heat exchanger. The windward side of the outdoor heat exchanger is exposed and serves as the exterior surface of the outdoor unit, while the leeward side of the outdoor heat exchanger is located inside the outdoor unit.

2. The defrosting control method for an air conditioner according to claim 1, characterized in that, The heating device includes a compressor, and the heat transfer device includes a first heat transfer device that conducts the waste heat of the compressor for de-icing of the outdoor unit. The heating device reaches a set temperature, including: The compressor reaches the first set temperature; The step of controlling the heat transfer device to start heat transfer when the preset de-icing conditions are met includes: When the temperature of the compressor reaches the first set temperature, the first heat transfer device is controlled to start heat transfer.

3. The defrosting control method for an air conditioner according to claim 1, characterized in that, The heating device includes an electronic control module, and the heat transfer device includes a second heat transfer device that conducts the waste heat of the electronic control module for de-icing of the outdoor unit. The heating device reaches a set temperature, including: The temperature of the electronic control module reaches the second set temperature; The step of controlling the heat transfer device to start heat transfer when the preset de-icing conditions are met includes: When the temperature of the electronic control module reaches the second set temperature, the second heat transfer device is controlled to start heat transfer.

4. The defrosting control method for an air conditioner according to any one of claims 1 to 3, characterized in that, Also includes: During the heating operation of the air conditioner, if the temperature of the heating device fails to reach the set temperature, and / or if the air conditioner compressor stops or its operating frequency is lower than the preset frequency, the heat transfer device shall be controlled to stop working.

5. The defrosting control method for an air conditioner according to any one of claims 1 to 3, characterized in that, Before determining whether the preset de-icing conditions are met, the control method further includes: The air conditioner starts heating operation for a set duration.

6. A defrosting control device for an air conditioner, characterized in that, It includes a processor, a memory, and a computer program stored in the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the steps of the de-icing control method as described in any one of claims 1 to 5.

7. A de-icing structure for an outdoor unit, characterized in that, include: An outdoor heat exchanger and a heat transfer device, wherein the heat transfer device is configured to conduct waste heat from the heating element in the outdoor unit for de-icing of the outdoor unit, and a first end of the heat transfer device is configured to contact the heating element, and a second end is configured at one end of the outdoor heat exchanger near the chassis of the outdoor unit. The de-icing structure also includes a guide member disposed on the windward side of the outdoor heat exchanger, the guide member including an inclined guide surface for guiding away the frost that falls off the windward side of the outdoor heat exchanger. The de-icing structure also includes a frost collector disposed on the leeward side of the outdoor heat exchanger, and a frost collection groove for collecting frost is formed between the frost collector and the outdoor heat exchanger. The second end of the heat transfer device is connected to the guide and the defrosting device. The windward side of the outdoor heat exchanger is exposed and serves as the exterior surface of the outdoor unit. The leeward side of the outdoor heat exchanger is located inside the outdoor unit.

8. The de-icing structure of the outdoor unit according to claim 7, characterized in that, The heating device is configured to include a compressor, and the heat transfer device includes a first heat transfer device for conducting the waste heat of the compressor for de-icing of the outdoor unit, wherein a first end of the first heat transfer device is configured to contact the compressor. and / or The heating device is configured to include an electronic control module, and the heat transfer device includes a second heat transfer device that conducts the waste heat of the electronic control module for de-icing of the outdoor unit, wherein the first end of the second heat transfer device is configured to contact the electronic control module.

9. The de-icing structure of the outdoor unit according to claim 7, characterized in that, The heat transfer device includes a heat pipe, which includes an evaporation section at a first end, a condensation section at a second end, and an intermediate section connecting the evaporation section and the condensation section. The evaporation section is configured to contact the heating device, and the condensation section is located at one end of the outdoor heat exchanger near the chassis and on the windward and / or leeward side of the outdoor heat exchanger. The intermediate section is covered with a heat insulation layer.

10. The de-icing structure of the outdoor unit according to claim 9, characterized in that, The evaporation section is curved and configured to wrap around the heating device; and / or The outdoor heat exchanger is L-shaped, and the condensation section is L-shaped.

11. The de-icing structure of the outdoor unit according to claim 7, characterized in that, One end of the guide surface away from the chassis of the outdoor unit abuts against the windward side of the outdoor heat exchanger, and the other end of the guide surface near the chassis of the outdoor unit extends toward the windward side away from the outdoor heat exchanger.

12. The de-icing structure of the outdoor unit according to claim 11, characterized in that, The angle between the guide surface and the windward side of the outdoor heat exchanger is 30° to 60°.

13. The de-icing structure of the outdoor unit according to claim 11, characterized in that, The guide component includes a guide plate and a support plate. The guide plate is inclined and the support plate is supported between the guide plate and the windward side of the outdoor heat exchanger. The guide surface is formed on the side of the guide plate away from the windward side of the outdoor heat exchanger. The second end of the heat transfer device is located within the space enclosed by the guide member, the support plate, and the windward side of the outdoor heat exchanger, and is fixedly connected to the guide plate.

14. The de-icing structure of the outdoor unit according to claim 7, characterized in that, The defrosting unit is mounted on the chassis of the outdoor unit.

15. The de-icing structure of the outdoor unit according to claim 14, characterized in that, The defrosting component includes a first plate and a second plate connected to each other. The first plate and the leeward side of the outdoor heat exchanger are arranged opposite each other. The second plate is located between the first plate and the outdoor heat exchanger. The first plate, the second plate and the leeward side of the outdoor heat exchanger cooperate to form the defrosting groove. The second end of the heat transfer device is disposed in the defrosting groove.

16. The de-icing structure of the outdoor unit according to claim 15, characterized in that, Along the height direction of the outdoor heat exchanger, the height of the first plate is 5cm to 20cm; and / or Along the direction perpendicular to the leeward side of the outdoor heat exchanger, the width of the second plate is 3cm to 5cm.

17. The de-icing structure of the outdoor unit according to claim 15, characterized in that, The first plate is provided with ventilation holes; and / or The second plate is provided with drainage holes, or there is a drainage gap between the second plate and the outdoor heat exchanger; The second end of the heat transfer device is configured to be fixed to the first plate and / or the second plate.

18. The de-icing structure of the outdoor unit according to any one of claims 7 to 17, characterized in that, The surface of the outdoor heat exchanger is coated with a hydrophobic coating.

19. An outdoor unit of an air conditioner, characterized in that, include: The de-icing control device, heating device, temperature sensor, and de-icing structure of the outdoor unit according to any one of claims 7 to 18 The temperature sensor is configured to detect the temperature of the heating device; The de-icing control device is configured to control the operation of the heat transfer device of the de-icing structure based on the detection results of the temperature sensor.

20. The outdoor unit of the air conditioner according to claim 19, characterized in that, The de-icing structure is the de-icing structure as described in claim 8. The heating device includes a compressor, and the temperature sensor includes a first temperature sensor for detecting the temperature of the compressor; and / or The heating device includes an electronic control module for controlling the operation of the compressor, and the temperature sensor includes a second temperature sensor for detecting the temperature of the electronic control module.

21. The outdoor unit of the air conditioner according to claim 19 or 20, characterized in that, It also includes a control valve, which is disposed on the heat transfer device, and the de-icing control device is configured to control the operation of the heat transfer device by controlling the control valve.

22. An air conditioner, characterized in that, The outdoor unit of the air conditioner as described in any one of claims 19 to 21.

23. A non-transient computer-readable storage medium, characterized in that, The storage medium stores a computer program that can run on a processor, which, when executed by the processor, implements the steps of the de-icing control method as described in any one of claims 1 to 5.

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