Air conditioner and anti-condensation control method thereof, computer device and readable storage medium

Abstract

The present invention provides an air conditioner and an anti-condensation control method thereof, a computer device and a readable storage medium. The air conditioner comprises an indoor heat exchanger, a heat dissipation module and an outdoor heat exchanger connected in sequence through a pipeline; the pipeline comprises a first branch pipe and a second branch pipe arranged in parallel, and the heat dissipation module is connected to the first branch pipe; the first branch pipe is also connected to a first flow control component, and the second branch pipe is connected to a throttling component. The air conditioner can prevent the electric box from generating condensation water and thus causing a short circuit and burning of a driving board, improve the heat dissipation reliability of the controller, and at the same time increase the temperature adjustment range of the radiator, thereby improving applicability.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to an air conditioner and an anti-condensation control method thereof, a computer device and a readable storage medium. Background Art

[0002] Refrigerant heat dissipation is increasingly used in the field of air conditioning due to its good heat dissipation effect and low cost compared to air cooling. In order to reduce the temperature rise of the controller in the electrical box, a refrigerant pipe is added to dissipate the heat of the controller. However, when the temperature of the refrigerant passing through the radiator is lower than 0°C, the temperature of the heat dissipation module is too low, resulting in condensation and damage to the controller.

[0003] like Figure 1 As shown, in the existing air conditioner, after the refrigerant is discharged from the compressor 10, it is condensed by the condenser 101, passes through the first throttling device 102, and is introduced into the heat dissipation module 103 of the controller to dissipate the heat of the controller, and then passes through the second throttling device 104, enters the evaporator 105 for evaporation, and finally flows into the compressor 10 to enter the next cycle. In the case of low-temperature refrigeration, the temperature of the refrigerant after condensation from the condenser 101 is generally 3°C to 5°C higher than the ambient temperature. Even if the first throttling device 102 is adjusted to the maximum flow rate, the temperature after passing through the heat dissipation module 103 is only 3°C to 5°C higher than the outdoor ambient temperature. The ambient temperature for the equipment is generally 25°C to 35°C. Therefore, when the outdoor ambient temperature is low, especially below 0°C, the heat dissipation module is very likely to produce condensation water on the surface due to the low temperature of the refrigerant, which may burn the motherboard. On the other hand, in the case of low-temperature refrigeration, since the operating frequency of the compressor 10 is generally not high and the heat generated by the controller is not high, the temperature of the heat dissipation module 103 is generally not high. In this case, the temperature of the heat dissipation module 103 after cooling by the refrigerant drops relatively low, which is prone to condensation and damage to the controller.

[0004] Currently, most practices do not turn on refrigeration under low temperature conditions. Since some special places, such as equipment rooms, still need refrigeration to cool the space under low temperature conditions, a new solution is needed to solve the problem of condensation caused by refrigerant heat dissipation under low temperature refrigeration.

[0005] In addition, there is an air conditioner that can implement a control method to prevent condensation from forming in the electrical box. The air conditioner controls the on-off of a refrigerant flow path by directly connecting a refrigerant flow path in parallel at both ends of the radiator and setting an electromagnetic valve on the refrigerant flow path. However, since the electromagnetic valve controls the refrigerant in the pipeline where it is located, the adjustment range of the refrigerant flow in the pipeline where the radiator is located is limited, and the radiator temperature cannot be quickly adjusted. Summary of the invention

[0006] The first object of the present invention is to provide an air conditioner that can prevent condensation water from being generated in the electrical box and thus causing the driver board to short-circuit and burn, improve the heat dissipation reliability of the controller, and at the same time increase the temperature adjustment range of the radiator to improve applicability.

[0007] The second object of the present invention is to provide an anti-condensation control method for an air conditioner that can prevent condensation from forming in the electrical box and causing a short circuit and burning of the driving board, thereby improving the heat dissipation reliability of the controller, while increasing the temperature adjustment range of the radiator and improving applicability.

[0008] A third object of the present invention is to provide an air conditioner that implements the above-mentioned anti-condensation control method.

[0009] A fourth object of the present invention is to provide a computer device for implementing the above-mentioned anti-condensation control method.

[0010] A fifth object of the present invention is to provide a readable storage medium for implementing the above-mentioned anti-condensation control method.

[0011] To achieve the above-mentioned first purpose, the present invention provides an air conditioner, comprising an indoor heat exchanger, a heat dissipation module and an outdoor heat exchanger connected in sequence through pipelines; the pipeline comprises a first pipe branch and a second pipe branch arranged in parallel, and the heat dissipation module is connected to the first pipe branch; the first pipe branch is also connected to a first flow control component, and the second pipe branch is connected to a throttling component.

[0012] It can be seen from the above scheme that in an air conditioner that uses refrigerant heat dissipation, a second pipe branch is provided in parallel with the first pipe branch where the heat dissipation module is located to shunt the first pipe branch, and a first flow control component is provided on the first pipe branch to further accurately control the amount of refrigerant passing through the heat dissipation module. Since the first flow control component can shut off the first pipe branch, the radiator temperature adjustment range can be increased, the applicability of the air conditioner can be improved, and the reliability of the air conditioner operation can be improved. When the first pipe branch is shut off, the throttling effect of the air conditioner pipeline can be achieved through the throttling component through which the refrigerant flowing through the second pipe branch passes.

[0013] A preferred solution is that a second flow control component is also connected to the first pipe branch, and the second flow control component is located on the downstream side of the heat dissipation module; at least one of the first flow control component and the second flow control component is an electronic expansion valve.

[0014] A preferred solution is that the throttling component is an electronic expansion valve.

[0015] It can be seen that by arranging the electronic expansion valve on the second pipe branch, when the flow of the refrigerant in the first pipe branch is cut off, the throttling effect can be achieved through the electronic expansion valve on the second pipe branch.

[0016] To achieve the above-mentioned second purpose, the present invention provides an anti-condensation control method for an air conditioner, the air conditioner comprising: an indoor heat exchanger, a heat dissipation module and an outdoor heat exchanger connected in sequence through pipelines; the pipeline comprises a first pipe branch and a second pipe branch arranged in parallel, and the heat dissipation module is connected to the first pipe branch; the first pipe branch is also connected with a first electronic expansion valve and a second electronic expansion valve, along the flow direction of the refrigerant, the first electronic expansion valve is located on the upstream side of the heat dissipation module, and the second electronic expansion valve is located on the downstream side of the heat dissipation module; the second pipe branch is connected with a third electronic expansion valve; the anti-condensation control method comprises: judging whether there is a condensation risk according to the ambient temperature and the temperature of the heat dissipation module, if the temperature of the heat dissipation module is lower than the sum of the ambient temperature and the first correction temperature, it is judged that there is a condensation risk and the opening of the third electronic expansion valve is increased.

[0017] It can be seen from the above scheme that in the operation of the air conditioner using refrigerant heat dissipation, the opening of the third electronic expansion valve is adjusted by detecting the ambient temperature around the air conditioner and the temperature of the heat dissipation module and comparing them, so as to keep the temperature of the heat dissipation module of the air conditioner always greater than the ambient temperature. The anti-condensation control method can prevent the refrigerant heat dissipation from causing the temperature of the heat dissipation module to be lower than the ambient temperature, causing condensation water to be generated in the electrical box, and then causing short circuit and burning, thereby improving the reliability of the air conditioner operation. At the same time, the setting of the first flow control component further accurately controls the amount of refrigerant passing through the heat dissipation module, increases the radiator temperature adjustment range, improves the applicability of the air conditioner, and improves the reliability of the air conditioner operation.

[0018] A preferred solution is to increase the opening of the third electronic expansion valve and continue it for a first preset time period, and then determine whether the temperature of the heat dissipation module after heating is greater than the sum of the ambient temperature and the second corrected temperature; if not, reduce the opening of the second electronic expansion valve and / or reduce the speed of the external fan.

[0019] A further solution is that, in the step of reducing the opening of the second electronic expansion valve, the rate of reducing the first preset opening value is adjusted every second preset time period until the temperature of the heat dissipation module is greater than the sum of the ambient temperature and the second correction temperature; and / or in the step of reducing the speed of the external fan, the rate of reducing the first preset speed value is adjusted every third preset time period until the temperature of the heat dissipation module is greater than the sum of the ambient temperature and the second correction temperature, or until the speed of the external fan reaches the lower limit of the operational speed.

[0020] A further solution is that the second preset time period is 10 seconds to 60 seconds, the third preset time period is 30 seconds to 120 seconds; and / or the first correction temperature is in the range of 0 to 5°C; and / or the second correction temperature is in the range of 1°C to 20°C.

[0021] A preferred solution is, in the step of judging whether the temperature of the heat dissipation module after heating is greater than the sum of the ambient temperature and the second corrected temperature; if so, then judging whether the temperature of the heat dissipation module after heating is greater than the difference between the preset temperature value and the third corrected temperature, the preset temperature value being the upper limit temperature value for long-term reliable operation of the heat dissipation module; if the temperature of the heat dissipation module is greater than the difference between the preset temperature value and the third corrected temperature, then adjusting the opening of the second electronic expansion valve at a rate of increasing the second preset opening value every fourth preset time period until the temperature of the heat dissipation module is less than the difference between the preset temperature value and the third corrected temperature; and / or adjusting the speed of the external fan at a rate of increasing the second preset speed value every fifth preset time period until the temperature of the heat dissipation module is less than the difference between the preset temperature value and the third corrected temperature, or until the speed of the external fan reaches the upper limit speed that can be operated.

[0022] A further solution is that the preset temperature value is 90°C, the third correction temperature is in the range of 1°C to 20°C; and / or the fourth preset time period is 10 seconds to 60 seconds, and the fifth preset time period is 30 seconds to 120 seconds.

[0023] A preferred solution is that if the temperature of the heat dissipation module is greater than or equal to the difference between the preset temperature value and the third correction temperature, and less than or equal to the sum of the ambient temperature and the second correction temperature, the opening of the second electronic expansion valve and the speed of the external fan remain unchanged.

[0024] To achieve the third objective, the present invention provides an air conditioner, the air conditioner comprising a processor, the processor being configured to implement the above-mentioned anti-condensation control method for the air conditioner when executing a program stored in a memory.

[0025] To achieve the fourth objective, the present invention provides a computer device, which includes a processor, and the processor is used to implement the above-mentioned anti-condensation control method for an air conditioner when executing a program stored in a memory.

[0026] To achieve the fifth objective, the present invention provides a readable storage medium having a program stored thereon, and when the program is executed by a processor, the above-mentioned anti-condensation control method for an air conditioner is implemented. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a system block diagram of an existing air conditioner.

[0028] Figure 2 1 is a system block diagram of an air conditioner embodiment of the present invention.

[0029] Figure 3 It is a flowchart of an embodiment of the anti-condensation control method of the present invention.

[0030] The present invention is further described below in conjunction with the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0031] Air conditioner and anti-condensation control method thereof embodiment:

[0032] See also Figure 2 In this embodiment, the air conditioner includes an indoor unit 1 and an outdoor unit 2. The indoor unit 1 includes a compressor 11, an indoor heat exchanger 12, an indoor fan 14, a controller and a heat dissipation module 13. The outdoor unit 2 includes an outdoor heat exchanger 21 and an outdoor fan 22. The compressor 11, the indoor heat exchanger 12, the heat dissipation module 13 and the outdoor heat exchanger 21 are connected in sequence through pipelines. The heat dissipation module 13 is installed on the controller to cool the controller through a refrigerant.

[0033] The pipeline includes a main pipeline 31 and a first branch pipeline 32 and a second branch pipeline 33 arranged in parallel. Both ends of the first branch pipeline 32 and the second branch pipeline 33 are connected to the main pipeline 31. The indoor heat exchanger 12 and the outdoor heat exchanger 21 are both connected to the main pipeline 31. The heat dissipation module 13 is connected to the first branch pipeline 32. The first electronic expansion valve 4 and the second electronic expansion valve 5 are also connected to the first branch pipeline 32. Along the flow direction of the refrigerant in the cooling state, the first electronic expansion valve 4 is located on the upstream side of the heat dissipation module 13, and the second electronic expansion valve 5 is located on the downstream side of the heat dissipation module 13. The second branch pipeline 33 is connected to a throttling component 6, which is an electronic expansion valve. The second electronic expansion valve 5 is used to control the refrigerant flow of the first branch pipeline 32. In extreme cases, after the second electronic expansion valve 5 is closed, the third electronic expansion valve 6 on the second branch pipeline 33 acts as a throttling component to achieve throttling of the refrigerant in the pipeline.

[0034] The working process of the air conditioner is as follows. During cooling, under normal circumstances, the third electronic expansion valve 6 is at the minimum opening, that is, closed. After the refrigerant is discharged from the compressor 11, it is condensed by the outdoor heat exchanger 21 as a condenser, throttled by the first electronic expansion valve 4, introduced into the heat dissipation module 13 to dissipate heat for the controller, and then throttled by the second electronic expansion valve 5, enters the indoor heat exchanger 12 as an evaporator for evaporation, and finally flows into the compressor 11 to enter the next cycle. When it is detected that the temperature of the heat dissipation module 13 is too low, the third electronic expansion valve 6 can be opened, and the opening of the second electronic expansion valve 5 can be adjusted at the same time. By adjusting the flow of the refrigerant flowing through the heat dissipation module 13, the purpose of adjusting the temperature of the heat dissipation module 13 is achieved. In order to achieve a better adjustment effect, the speed of the external fan 22 can be reduced synchronously to increase the temperature of the refrigerant. In extreme cases, the opening of the second electronic expansion valve 5 can even be controlled to be closed to the minimum, that is, the second pipe branch 33 is in a closed state. When it is detected that the temperature of the heat dissipation module 13 is high, the second electronic expansion valve 5 can be opened again and adjusted to a suitable opening to achieve the effect of cooling the controller.

[0035] The air conditioner further includes a processor, which is used to implement the following anti-condensation control method when executing the program stored in the memory. The anti-condensation control method specifically includes the following steps:

[0036] See also Figure 2 and 3 During cooling, the third electronic expansion valve 6 is in a closed state. After the operating frequency of the compressor 11 reaches the target frequency and runs stably for 10 minutes, step S11 is executed to detect the temperature of the heat dissipation module 13, and determine whether there is a condensation risk according to the indoor ambient temperature and the temperature of the heat dissipation module 13. If the temperature (Tdissipation) of the heat dissipation module 13 is less than the sum of the indoor ambient temperature (Tinner) and the first correction temperature T1, it is determined that there is a condensation risk and the opening of the third electronic expansion valve 6 is increased to the initial opening K0. Thereafter, the opening is increased or decreased according to the difference between the current exhaust temperature and the target exhaust temperature. The first correction temperature T1 is in the range of 0 to 5°C, and preferably, the first correction temperature T1 is 3°C. The initial opening K0 can be formulated according to experimental fitting, or it can be converted by the flow curve characteristics of the second electronic expansion valve 5 and the third electronic expansion valve 6 to ensure that after the third electronic expansion valve 6 is opened, the circulation flow of the main pipe 31 will not be increased excessively, so that the refrigerant enters the evaporator without throttling, so that the evaporation is incomplete and the suction liquid is carried with liquid and liquid hammer occurs.

[0037] Next, step S12 is executed to increase the opening of the third electronic expansion valve 6 for a first preset time period, and then step S13 is executed to determine whether the temperature of the heat dissipation module 13 after heating is greater than the sum of the ambient temperature and the second corrected temperature T2. The first preset time period is in the range of 10 seconds to 60 seconds, and preferably, the first preset time period is 30 seconds.

[0038] If not, step S14 is executed to adjust the opening of the second electronic expansion valve 5 at a rate of reducing the first preset opening value K1 per second preset time period until the temperature of the heat dissipation module 13 is greater than the sum of the ambient temperature and the second correction temperature T2. Preferably, the second preset time period is in the range of 10 seconds to 60 seconds, and the second correction temperature is in the range of 1°C to 20°C. More preferably, the second preset time period is 30 seconds, and the second correction temperature is 10°C. The first preset opening value K1 is taken according to Table 1.

[0039] Table 1

[0040]

[0041] At the same time, the speed of the outdoor fan 22 is adjusted at a rate of reducing the first preset speed value R1 every third preset time period until the temperature of the heat dissipation module 13 is greater than the sum of the ambient temperature and the second correction temperature T2, or until the speed of the outdoor fan 22 reaches the lower limit speed Rmin that can be operated. The third preset time period is in the range of 30 seconds to 120 seconds, and preferably, the third preset time period is 60 seconds. Rmin can take different values ​​according to different outdoor ambient temperatures, and the first preset speed value R1 is taken according to Table 2.

[0042] Table 2

[0043]

[0044] If yes, then step S15 is executed to determine whether the temperature of the heat dissipation module 13 after heating is greater than the difference between the preset temperature value (T preset) and the third correction temperature (T3), and the preset temperature value is the upper limit temperature value of the long-term reliable operation of the heat dissipation module 13. The preset temperature value is 90°C, and the third correction temperature is in the range of 1°C to 20°C. Preferably, the third correction temperature is 10°C.

[0045] If so, that is, Tscatter>Tpreset-T3, then step S16 is executed to reduce the opening of the second electronic expansion valve 5 at a rate of increasing the second preset opening value K2 per fourth preset time period until the temperature of the heat dissipation module 13 is less than the difference between the preset temperature value and the third correction temperature. The fourth preset time period is 10 seconds to 60 seconds, preferably, the fourth preset time is 30 seconds. The second preset opening value K2 is taken according to Table 3.

[0046] Table 3

[0047]

[0048] At the same time, the speed of the outdoor fan 22 is adjusted at a rate of increasing the second preset speed value R2 every fifth preset time period until the temperature of the heat dissipation module 13 is less than the difference between the preset temperature value and the third correction temperature, or until the speed of the outdoor fan 22 reaches the upper limit speed Rmax that can be operated. The fifth preset time period is 30 seconds to 120 seconds, preferably, the fifth preset time period is 30 seconds. Rmax can take different values ​​according to different outdoor ambient temperatures. The first preset speed value R2 is taken according to Table 4.

[0049] Table 4

[0050]

[0051] If not, that is, Tinnerloop+T2≤Tscatter≤Tpreset-T3, it is determined that there is no risk of condensation. At this time, the opening degree of the second electronic expansion valve 5 and the rotation speed of the external fan 22 remain unchanged.

[0052] As can be seen from the above, in the air conditioner using refrigerant heat dissipation, a second pipe branch is set in parallel with the first pipe branch where the heat dissipation module is located to shunt the first pipe branch, and at the same time, a second electronic expansion valve as a first flow control component is set on the first pipe branch to further accurately control the amount of refrigerant passing through the heat dissipation module. Since the second electronic expansion valve can shut off the first pipe branch, the radiator temperature adjustment range can be increased, the applicability of the air conditioner can be improved, and the reliability of the air conditioner operation can be improved. When the first pipe branch is shut off, the throttling effect of the air conditioner pipeline can be achieved through the throttling component through which the refrigerant flowing through the second pipe branch passes. In addition, during the operation of the air conditioner using refrigerant heat dissipation, the opening of the third electronic expansion valve is adjusted by detecting and comparing the ambient temperature around the air conditioner and the temperature of the heat dissipation module, so as to keep the temperature of the heat dissipation module of the air conditioner always greater than the ambient temperature. The anti-condensation control method can prevent the heat dissipation of the refrigerant from causing the temperature of the heat dissipation module to be lower than the ambient temperature, causing condensation water to be generated in the electrical box, and then causing short circuit burning, thereby improving the reliability of the air conditioner operation. At the same time, the second electronic expansion valve is set to further accurately control the amount of refrigerant passing through the heat dissipation module, increase the temperature adjustment range of the radiator, improve the applicability of the air conditioner, and improve the reliability of the air conditioner operation. In addition, the margin is increased by setting the correction temperature. In this embodiment, the temperature of the radiator is compared with the ambient temperature, but in actual use, it should be more accurate to compare it with the dew point temperature. Since the dew point temperature requires a humidity sensor, it will increase the cost. In this embodiment, by setting the correction temperature, the problem of abnormal control caused by detection deviation can be avoided.

[0053] In addition, the detection of the temperature of the radiator can also be replaced by the detection of the temperature of the refrigerant; a humidity sensor can also be added to detect the humidity of the indoor environment, so as to achieve more accurate control; in step S13 and step S15, only the opening of the second electronic expansion valve or only the speed of the external fan can be adjusted. The above changes can also achieve the purpose of the present invention.

[0054] Computer device embodiment:

[0055] The computer device of the present invention is a controller arranged inside the outdoor unit, including a processor and a memory, such as a single chip microcomputer including a central processing unit, etc. Moreover, the processor is used to implement the steps of the above-mentioned anti-condensation control method of the air conditioner when executing the computer program stored in the memory.

[0056] The processor may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0057] The memory may mainly include a program storage area and a data storage area, wherein the program storage area may store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.; the data storage area may store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), etc. In addition, the memory may include a high-speed random access memory, and may also include a non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash card (Flash Card), at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.

[0058] Computer readable storage medium embodiment:

[0059] The computer-readable storage medium of the present invention can be any form of storage medium that can be read by a processor of a computer device, including but not limited to non-volatile memory, volatile memory, ferroelectric memory, etc. A computer program is stored on the computer-readable storage medium. When the processor of the computer device reads and executes the computer program stored in the memory, the steps of the above-mentioned anti-condensation control method for an air conditioner can be implemented.

[0060] A computer program includes computer program code, which may be in source code form, object code form, executable file or some intermediate form, etc. Computer readable media may include: any entity or device capable of carrying computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium, etc. It should be noted that the content contained in the computer readable medium may be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer readable media do not include electric carrier signals and telecommunication signals.

[0061] Finally, it should be emphasized that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An anti-condensation control method for an air conditioner, the air conditioner comprising: An indoor heat exchanger, a heat dissipation module and an outdoor heat exchanger connected in sequence through pipelines; The pipeline includes a first pipe branch and a second pipe branch arranged in parallel, and the heat dissipation module is connected to the first pipe branch; Features: The first branch pipe is also connected to a first electronic expansion valve and a second electronic expansion valve. Along the flow direction of the refrigerant, the first electronic expansion valve is located on the upstream side of the heat dissipation module, and the second electronic expansion valve is located on the downstream side of the heat dissipation module. The second pipe branch is connected to a third electronic expansion valve; The anti-condensation control method comprises: Determine whether there is a condensation risk according to the ambient temperature and the temperature of the heat dissipation module; if the temperature of the heat dissipation module is less than the sum of the ambient temperature and the first correction temperature, determine that there is a condensation risk and increase the opening of the third electronic expansion valve to an initial opening, and then increase or decrease the opening according to the difference between the current exhaust temperature and the target exhaust temperature; After increasing the opening of the third electronic expansion valve for a first preset period of time, determining the temperature T of the heat dissipation module after the temperature rises 散 Is it greater than the ambient temperature T 内环 and the second corrected temperature T2; If not, reducing the opening of the second electronic expansion valve and / or reducing the speed of the external fan; In the step of reducing the opening of the second electronic expansion valve, the first preset opening value is reduced at a rate of every second preset time period until the temperature of the heat dissipation module is greater than the sum of the ambient temperature and the second correction temperature, and the temperature is searched in the first table and T 散 -(T 内环 +T2) corresponds to a first preset opening value, wherein the first preset opening value is equal to T 散 -(T 内环 +T2) negative correlation; and / or In the step of reducing the speed of the external fan, the speed is adjusted according to the rate of reducing the first preset speed value every third preset time period until the temperature of the heat dissipation module is greater than the sum of the ambient temperature and the second correction temperature, or until the speed of the external fan reaches the lower limit speed that can be operated, and the second table is searched and the T 散 -(T 内环 +T2) corresponds to a first preset speed value, wherein the first preset speed value is equal to T 散 -(T 内环 +T2) negatively correlated.

2. The anti-condensation control method according to claim 1, characterized in that: The second preset time period is 10 seconds to 60 seconds, and the third preset time period is 30 seconds to 120 seconds; and / or The first correction temperature is in the range of 0 to 5°C; and / or The second correction temperature is in the range of 1°C to 20°C.

3. The anti-condensation control method according to claim 1, characterized in that: In the step of determining whether the temperature of the heat dissipation module after heating is greater than the sum of the ambient temperature and the second corrected temperature; If yes, then determine whether the temperature of the heat dissipation module after heating is greater than the difference between a preset temperature value and a third correction temperature, wherein the preset temperature value is an upper limit temperature value for long-term reliable operation of the heat dissipation module; If the temperature of the heat dissipation module is greater than the difference between the preset temperature value and the third correction temperature, the opening of the second electronic expansion valve is adjusted at a rate of increasing the second preset opening value every fourth preset time period until the temperature of the heat dissipation module is less than the difference between the preset temperature value and the third correction temperature; and / or the speed of the external fan is adjusted at a rate of increasing the second preset speed value every fifth preset time period until the temperature of the heat dissipation module is less than the difference between the preset temperature value and the third correction temperature, or until the speed of the external fan reaches the upper limit of the operable speed.

4. The anti-condensation control method according to claim 3, characterized in that: The preset temperature value is 90° C., and the third correction temperature is in the range of 1° C. to 20° C.; and / or The fourth preset time period is from 10 seconds to 60 seconds, and the fifth preset time period is from 30 seconds to 120 seconds.

5. The anti-condensation control method according to claim 3 or 4, characterized in that: If the temperature of the heat dissipation module is greater than or equal to the difference between the preset temperature value and the third correction temperature, and less than or equal to the sum of the ambient temperature and the second correction temperature, the opening of the second electronic expansion valve and the speed of the external fan remain unchanged.

6. An air conditioner, characterized in that: The air conditioner comprises a processor, and the processor is used to implement the anti-condensation control method of the air conditioner as claimed in any one of claims 1 to 5 when executing the program stored in the memory.

7. A computer device, characterized in that: The computer device includes a processor, and the processor is used to implement the anti-condensation control method of the air conditioner as described in any one of claims 1 to 5 when executing the program stored in the memory.

8. A readable storage medium having a program stored thereon, characterized in that: When the program is executed by a processor, an anti-condensation control method for an air conditioner as described in any one of claims 1 to 5 is implemented.

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