Anti-freezing control method, storage medium, electronic equipment and air conditioner

Abstract

The invention relates to the technical field of air conditioners, in particular to an anti-freezing control method, a storage medium, electronic equipment and an air conditioner. The air conditioner aims at solving the problems that an existing air conditioner is poor in anti-freezing effect and low in heating energy efficiency. In order to achieve the purpose, the anti-freezing control method is provided and used for the air conditioner, the air conditioner comprises an air conditioner outdoor unit and an air conditioner indoor unit, the air conditioner outdoor unit comprises an outdoor heat exchanger and a heating module, at least part of the heating module is arranged on a chassis of the air conditioner outdoor unit, and the anti-freezing control method comprises the steps that the environment temperature and the outlet temperature of the outdoor heat exchanger are obtained; determining an outlet temperature threshold based on the ambient temperature; the outlet temperature and the outlet temperature threshold value are judged; and based on the judgment result, the air conditioner is selectively controlled to operate a defrosting mode and a heating module is selectively controlled to be started. According to the technical scheme, on one hand, original ice on the base plate can be removed, and on the other hand, defrosting water can be prevented from freezing on the base plate.

Description

Technical Field

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

[0002] During the winter heating process of an air conditioner, the low-temperature refrigerant absorbs heat as it passes through the outdoor heat exchanger. At this time, water molecules in the humid outdoor air will precipitate and frost on the surface of the outdoor heat exchanger. In addition, in areas with long winters, frequent snow and wind, and relatively cold and humid conditions, the outdoor unit of the air conditioner is also prone to icing, which affects the heat exchange efficiency of the outdoor heat exchanger and reduces the heating energy efficiency of the air conditioner.

[0003] To address this, defrosting is typically achieved by switching to cooling mode after the air conditioner has been running in heating mode for a certain period. This involves first introducing high-temperature refrigerant into the outdoor heat exchanger to release heat, causing the frost on the surface of the outdoor heat exchanger to melt into water, which is then drained through the drain outlet on the outdoor unit's chassis. However, this defrosting method cannot accurately assess the frost buildup on the outdoor heat exchanger surface, potentially leading to energy waste or reduced heating efficiency. Furthermore, the melted water may freeze due to the low chassis temperature, further hindering drainage and reducing heating efficiency.

[0004] Accordingly, a new technical solution is needed in this field to solve the above problems. Summary of the Invention

[0005] To address at least one of the aforementioned problems in the prior art, namely, the poor antifreeze effect and low heating efficiency of existing air conditioners, this application provides an antifreeze control method for an air conditioner. The air conditioner includes an outdoor unit and an indoor unit. The outdoor unit includes an outdoor heat exchanger and a heating module. A defrost sensor is installed at the outlet of the outdoor heat exchanger, and at least a portion of the heating module is mounted on the chassis of the outdoor unit. The antifreeze control method includes:

[0006] Obtain the ambient temperature and the outlet temperature of the outdoor heat exchanger;

[0007] Based on the ambient temperature, determine the outlet temperature threshold;

[0008] Determine the magnitude of the outlet temperature and the outlet temperature threshold.

[0009] Based on the judgment result, the air conditioner is selectively controlled to operate in defrost mode and the heating module is turned on.

[0010] With the above technical solution, the ambient temperature and the outlet temperature of the outdoor heat exchanger can be used to accurately determine whether the defrosting mode needs to be turned on. When the air conditioner turns on the defrosting mode, the frost on the outdoor heat exchanger melts into water and drips onto the chassis of the outdoor unit. At this time, the heating module on the chassis is also turned on. On the one hand, it can remove the original ice on the chassis, and on the other hand, it can prevent the defrosting water from freezing on the chassis, thereby ensuring the drainage effect of the chassis and the heat exchange efficiency of the outdoor heat exchanger.

[0011] In the preferred embodiment of the above-mentioned antifreeze control method, the step of selectively controlling the air conditioner to operate in defrost mode and the heating module to start based on the judgment result further includes:

[0012] When the outlet temperature is less than or equal to the outlet temperature threshold, the air conditioner is controlled to operate in defrost mode and the heating module is turned on.

[0013] In the preferred embodiment of the above-mentioned antifreeze control method, determining the outlet temperature threshold based on the ambient temperature further includes:

[0014] The calculation formula for determining the outlet temperature threshold is based on the temperature range of the ambient temperature.

[0015] The outlet temperature threshold is determined based on the calculation formula and the ambient temperature.

[0016] In the preferred embodiment of the above-mentioned antifreeze control method, controlling the air conditioner to operate in defrost mode and the heating module to turn on further includes:

[0017] Control the air conditioner to operate in defrost mode and continue for a first preset duration;

[0018] The heating module is controlled to turn on and remain on for a second preset duration;

[0019] Wherein, the first preset duration is less than or equal to the second preset duration.

[0020] When the above technical solution is adopted, turning on the heating module while the air conditioner is in defrost mode can prevent defrost water droplets from freezing on the chassis. Turning on the heating module after the defrost mode is completed can ensure that the ice on the chassis melts completely.

[0021] In a preferred embodiment of the above-mentioned antifreeze control method, the antifreeze control method further includes:

[0022] After the heating module is turned on and maintained for the second preset duration, the heating module is turned off.

[0023] In a preferred embodiment of the above-mentioned antifreeze control method, the antifreeze control method further includes:

[0024] After the heating module is turned on and continues for the second preset duration, it is determined whether there is water accumulation on the chassis;

[0025] When there is no water accumulation on the chassis, the heating module is turned off.

[0026] In the preferred embodiment of the above-mentioned antifreeze control method, some of the heating modules are also disposed on the top cover and / or air outlet grille of the outdoor unit of the air conditioner.

[0027] With the above technical solution, the ice on the top cover and air outlet grille can be melted while the air conditioner is defrosting, thereby avoiding the impact of icing on the stability of the outdoor unit and the heat exchange efficiency of the outdoor heat exchanger.

[0028] This application also provides a computer-readable storage medium storing a plurality of program codes adapted to be loaded and run by a processor to perform the antifreeze control method as described in any of the preceding claims.

[0029] This application also includes an electronic device comprising a processor and a storage device adapted to store a plurality of program codes adapted to be loaded and executed by the processor for the antifreeze control method as described in any of the preceding claims.

[0030] This application also provides an air conditioner, which includes the aforementioned electronic device.

[0031] When the above technical solution is adopted, when the air conditioner is in defrost mode, the frost on the outdoor heat exchanger melts into water and drips onto the chassis of the outdoor unit. At this time, the heating module on the chassis is also in the on state. On the one hand, it can remove the original ice on the chassis, and on the other hand, it can prevent the defrost water from freezing on the chassis, thereby ensuring the drainage effect of the chassis and the heat exchange efficiency of the outdoor heat exchanger. Attached Figure Description

[0032] The antifreeze control method of this application will now be described with reference to the accompanying drawings. In the drawings:

[0033] Figure 1 This is a flowchart illustrating the main steps of an antifreeze control method according to an embodiment of this application;

[0034] Figure 2 This is a flowchart illustrating the steps of determining an outlet temperature threshold based on ambient temperature, according to one embodiment of this application.

[0035] Figure 3 This is a flowchart illustrating the steps of an antifreeze control method according to another embodiment of this application;

[0036] Figure 4This is a schematic diagram of the main structure of an electronic device according to an embodiment of this application.

[0037] List of reference numerals

[0038] 401. Processor; 402. Storage device. Detailed Implementation

[0039] Preferred embodiments of this application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this application and are not intended to limit the scope of protection of this application. For example, although heating modules are provided on the top cover, air outlet grille, and chassis of the air conditioner outdoor unit in this embodiment, this is not intended to limit the scope of protection of this application. Without departing from the principles of this application, those skilled in the art can change the placement of the heating modules as needed. For example, heating modules may be provided only on the air outlet grille and chassis.

[0040] In the description of this application, "processor" can include hardware, software, or a combination of both. A processor can be a central processing unit, a microprocessor, a digital signal processor, or any other suitable processor. A processor has data and / or signal processing capabilities. A processor can be implemented in software, in hardware, or a combination of both. Computer-readable storage media includes any suitable medium capable of storing program code, such as magnetic disks, hard disks, optical disks, flash memory, read-only memory, random access memory, etc.

[0041] As described in the background section, during the winter heating process of an air conditioner, the low-temperature refrigerant absorbs heat when passing through the outdoor heat exchanger. At this time, water molecules in the outdoor humid air will precipitate and frost on the surface of the outdoor heat exchanger. In addition, in areas with long winters, frequent snow and wind, and relatively cold and humid conditions, the outdoor unit of the air conditioner is also prone to icing, which affects the heat exchange efficiency of the outdoor heat exchanger and reduces the heating energy efficiency of the air conditioner.

[0042] To address this, defrosting is typically achieved by switching to cooling mode after the air conditioner has been running in heating mode for a certain period. This involves first introducing high-temperature refrigerant into the outdoor heat exchanger to release heat, causing the frost on the surface of the outdoor heat exchanger to melt into water, which is then drained through the drain outlet on the outdoor unit's chassis. However, this defrosting method cannot accurately assess the frost buildup on the outdoor heat exchanger surface, potentially leading to energy waste or reduced heating efficiency. Furthermore, the melted water may freeze due to the low chassis temperature, further hindering drainage and reducing heating efficiency.

[0043] The air conditioner in this application includes an indoor unit and an outdoor unit. The outdoor unit is connected to the indoor unit. The indoor unit is equipped with an indoor heat exchanger, while the outdoor unit contains an outdoor heat exchanger and a compressor. The outdoor unit is equipped with a temperature sensor to detect the outdoor ambient temperature, and a defrost sensor to detect the outlet temperature is located at the outlet of the outdoor heat exchanger. Heating modules are installed on the top cover, chassis, and air outlet grille of the outdoor unit. During heating operation, the compressor discharges high-temperature, high-pressure refrigerant gas. This gas then enters the indoor heat exchanger where it liquefies and releases heat. Next, the refrigerant enters the outdoor heat exchanger where it absorbs heat and vaporizes. The vaporized, low-temperature, low-pressure refrigerant gas returns to the compressor for the next heating cycle. During this cycle, the outdoor heat exchanger acts as the low-pressure side, and water molecules from the humid air precipitate and frost on its surface. During defrosting operation, the high-temperature, high-pressure refrigerant gas first enters the outdoor heat exchanger where it liquefies and releases heat, melting the frost on its surface.

[0044] See below. Figure 1 The antifreeze control method of this application will now be described. Figure 1 The flowchart below shows the main steps of an antifreeze control method according to an embodiment of this application. To address the problems of poor antifreeze performance and low heating efficiency in existing air conditioners, the antifreeze control method of this application includes the following steps:

[0045] S101, obtain the ambient temperature and the outlet temperature of the outdoor heat exchanger;

[0046] S102, Determine the outlet temperature threshold based on the ambient temperature;

[0047] S103, determine the difference between the outlet temperature and the outlet temperature threshold;

[0048] S104, based on the judgment result, selectively controls the air conditioner to operate in defrost mode and turn on the heating module.

[0049] In this embodiment, the ambient temperature can be detected by a temperature sensor on the outdoor unit of the air conditioner, and the outlet temperature of the outdoor heat exchanger in heating mode can be detected by a defrost sensor. When the detected outlet temperature is less than or equal to the outlet temperature threshold, it indicates that the refrigerant has not fully absorbed the outdoor heat. In other words, the frost on the surface of the outdoor heat exchanger reduces the heat exchange efficiency. At this time, the defrost mode is activated, and the heating module is activated at the same time. The frost on the surface of the outdoor heat exchanger melts and drips onto the chassis and is discharged from the drain.

[0050] It should be explained that in some areas, the cold and damp winters cause air conditioner outdoor units to easily freeze. In areas with heavy snowfall, snow can block the air outlet grille of the outdoor unit, making it difficult for the fan inside the unit to clear the snow. Furthermore, the melting snow can freeze back onto the grille, reducing the heat exchange efficiency of the outdoor heat exchanger and affecting the air conditioner's heating efficiency. Similarly, snow can accumulate on the top cover of the outdoor unit, causing it to freeze and further hindering heat exchange. Therefore, activating the heating module while the air conditioner is in defrost mode prevents the defrost water from refreezing and melts the existing ice on the top cover, air outlet grille, and chassis, ensuring heat exchange efficiency and the stability of the air conditioner. However, the placement of the heating module is not fixed. Those skilled in the art can change its location as needed, for example, omitting the heating module on the top cover and air outlet grille. Additionally, in this embodiment, the heating module is a heating wire, but this is not mandatory and can be modified as needed; for example, a PTC heater can be used.

[0051] See below. Figure 2 , Figure 2 This is a flowchart illustrating the steps of determining an outlet temperature threshold based on ambient temperature, as an embodiment of this application.

[0052] like Figure 2 As shown, the outlet temperature threshold can be determined according to the following steps:

[0053] S201, Calculation formula for determining the outlet temperature threshold based on the ambient temperature range;

[0054] S202, based on the calculation formula and ambient temperature, determine the outlet temperature threshold.

[0055] In one possible implementation, the outlet temperature threshold can be determined in the following way:

[0056] When -15℃≦A≦6℃, B=(13×A-120) / 21;

[0057] When -23℃≦A<-15℃, B=(A-45) / 4;

[0058] When A<-23℃, B=-17℃.

[0059] Where A is the measured ambient temperature and B is the outlet temperature threshold.

[0060] In this embodiment, since the outlet temperature is affected not only by the heat exchange efficiency of the outdoor heat exchanger but also by the ambient temperature, determining the outlet temperature threshold through different temperatures is more conducive to accurately judging the frosting situation of the outdoor heat exchanger. Specifically, after obtaining the ambient temperature and the outlet temperature, the temperature range of the ambient temperature is first determined, and then the calculation formula for the outlet temperature threshold is determined and calculated according to the temperature range. For example, when the ambient temperature is 6℃, the outlet temperature threshold B = (13 × 6 - 120) / 21 = -2℃.

[0061] It should be explained that the method for determining the outlet temperature threshold is not mandatory. In an alternative implementation, a comparison table of ambient temperature and outlet temperature threshold under frost conditions can be determined based on experiments. Then, the outlet temperature threshold is obtained by looking up the table based on the ambient temperature and the comparison table. The outlet temperature threshold is then compared with the measured outlet temperature. When the outlet temperature is less than or equal to the outlet temperature threshold, the air conditioner is controlled to operate in defrost mode and the heating module is turned on.

[0062] In some implementations, step S104, "controlling the air conditioner to operate in defrost mode and turning on the heating module," further includes:

[0063] Control the air conditioner to operate in defrost mode and continue for the first preset duration;

[0064] The heating module is turned on and remains in operation for a second preset duration.

[0065] The first preset duration is less than or equal to the second preset duration.

[0066] In this embodiment, the first preset duration is set to 3 minutes, and the second preset duration is set to 10 minutes. This means that while the air conditioner is in defrost mode, the heating module remains on. After the defrost mode ends, the heating module continues to operate for a certain period to ensure that the ice on the chassis melts completely. Of course, the specific settings of the first and second preset durations are not fixed; those skilled in the art can modify them according to their needs. In an alternative embodiment, the first and second preset durations can be equal; for example, both can be set to 3 minutes.

[0067] Furthermore, in some embodiments, the antifreeze control method further includes:

[0068] After the heating module is turned on and remains so for a second preset duration, the heating module is turned off.

[0069] However, this setting is not mandatory. In an alternative implementation, the antifreeze control method further includes:

[0070] After the heating module is turned on and continues for a second preset time, it is determined whether there is water accumulation on the chassis;

[0071] When there is no water accumulation on the chassis, the heating module is turned off.

[0072] In this embodiment, a water immersion sensor can be installed on the chassis. Its working principle is based on the principle of liquid conductivity; it detects the presence of water through electrodes and then converts the result into a dry contact output. After the heating module is turned on and remains on for a second preset time, the water immersion sensor can detect whether there is water accumulation on the chassis. If water is present, it indicates that the ice on the chassis has not completely melted, causing blockage of the drain outlet. In this case, the heating module remains on and is turned off when no water accumulation is detected.

[0073] It should be explained that the above-described method of controlling the heating module is not fixed. In one alternative embodiment, the heating modules on the top cover, air vent grille, and chassis can be turned on and run continuously for a second preset time. After the second preset time, the heating modules on the top cover and air vent grille are turned off first, and it is determined whether there is water accumulation on the chassis. If there is water accumulation on the chassis, the air vent grille on the chassis remains open until there is no water accumulation on the chassis, at which point the heating modules on the chassis are turned off. In another alternative embodiment, after the air conditioner is running in defrost mode and the heating module is turned on for a first preset time, the air conditioner is first turned on in heating mode, and it is determined whether there is water accumulation on the chassis. In addition, the setting of a water immersion sensor is not mandatory. In one alternative embodiment, a gravity sensor can be set on the chassis, and the presence of ice or water accumulation on the chassis can be detected based on the gravity sensor.

[0074] See below. Figure 3 , Figure 3 This is a flowchart illustrating the steps of an antifreeze control method according to another embodiment of this application.

[0075] like Figure 3 As shown, in one possible implementation, the antifreeze control method includes:

[0076] S301, obtain the ambient temperature and the outlet temperature of the outdoor heat exchanger, and then execute S302;

[0077] S302, determine the calculation formula for the outlet temperature threshold based on the temperature range of the ambient temperature, and then execute S303;

[0078] S303, based on the calculation formula and ambient temperature, determine the outlet temperature threshold, and then execute S304;

[0079] S304, determine whether the outlet temperature is less than or equal to the outlet temperature threshold. If yes, execute S305; otherwise, terminate the execution program.

[0080] S305, control the air conditioner to run in defrost mode for a first preset time, and control the heating module to turn on for a second preset time, and then end the execution program.

[0081] In this embodiment, when the air conditioner is running in heating mode, it can simultaneously acquire the ambient temperature and the outlet temperature of the outdoor heat exchanger. When the ambient temperature is below a certain temperature threshold, the calculation formula for the outlet temperature threshold is determined based on the temperature range of the ambient temperature, and the outlet temperature threshold is calculated based on this formula and the ambient temperature. Then, the measured outlet temperature is compared with the outlet temperature threshold. When the outlet temperature is less than or equal to the outlet temperature threshold, the air conditioner is controlled to operate in defrost mode and the heating module is turned on simultaneously. After a first preset time, the air conditioner is controlled to operate in heating mode, and after a second preset time, all heating modules are turned off.

[0082] It should be noted that the order of the above steps is not fixed. Those skilled in the art can change the order of the steps or delete some steps as needed, as long as it does not affect the achievement of the purpose of this application. In one alternative embodiment, the ambient temperature can be obtained first, and the outlet temperature can be obtained when the ambient temperature is lower than a certain temperature threshold. In another alternative embodiment, the air conditioner can be controlled to run in defrost mode for a first preset time. After the first preset time, the air conditioner can be controlled to run in heating mode, and it can be determined whether there is water accumulation on the chassis. When there is no water accumulation on the chassis, the heating module is turned off.

[0083] Those skilled in the art will understand that all or part of the processes in the method of the above embodiment of the present invention can also be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable file, or some intermediate form. The computer-readable storage medium can include any entity or device capable of carrying the computer program code, a medium, a USB flash drive, a portable hard drive, a magnetic disk, an optical disk, a computer memory, a read-only memory, a random access memory, an electrical carrier signal, a telecommunication signal, and a software distribution medium, etc.

[0084] Furthermore, this application also provides an electronic device. (See appendix) Figure 4 , Figure 4 This is a schematic diagram of the main structure of an electronic device according to an embodiment of this application. Figure 4As shown, the electronic device in this embodiment mainly includes a processor 401 and a storage device 402. The storage device 402 can be configured to store a program for executing the antifreeze control method of the above-described method embodiments. The processor 401 can be configured to execute the program in the storage device 402, which includes, but is not limited to, a program for executing the antifreeze control method of the above-described method embodiments. For ease of explanation, only the parts related to the embodiments of this application are shown. For specific technical details not disclosed, please refer to the method section of the embodiments of this application.

[0085] In some possible embodiments of this application, the electronic device may include multiple processors 401 and multiple storage devices 402. The program executing the program initiation control method of the above-described method embodiments can be divided into multiple subroutines. Each subroutine can be loaded and run by a processor 401 to execute different steps of the program initiation control method of the above-described method embodiments. Specifically, each subroutine can be stored in different storage devices 402, and each processor 401 can be configured to execute programs in one or more storage devices 402 to jointly implement the antifreeze control method of the above-described method embodiments. That is, each processor 401 executes different steps of the program initiation control method of the above-described method embodiments to jointly implement the antifreeze control method of the above-described method embodiments.

[0086] The aforementioned multiple processors 401 can be processors deployed on the same device. For example, the aforementioned electronic device can be a high-performance device composed of multiple processors, and the aforementioned multiple processors 401 can be processors configured on that high-performance device. Alternatively, the aforementioned multiple processors 401 can also be processors deployed on different devices. For example, the aforementioned electronic device can be a server cluster, and the aforementioned multiple processors 401 can be processors on different servers within the server cluster.

[0087] Furthermore, the present invention also provides a computer-readable storage medium. In one embodiment of the computer-readable storage medium according to the present invention, the computer-readable storage medium can be configured to store a program that performs the antifreeze control method of the above-described method embodiments. This program can be loaded and run by a processor to implement the above-described antifreeze control method. For ease of explanation, only the parts related to the embodiments of the present invention are shown; for specific technical details not disclosed, please refer to the method section of the embodiments of this application. The computer-readable storage medium can be a storage device device comprising various electronic devices. Optionally, in the embodiments of this application, the computer-readable storage medium is a non-transitory computer-readable storage medium.

[0088] Furthermore, the present invention also provides an air conditioner. In one embodiment of an air conditioner according to the present invention, the air conditioner may include the electronic equipment described in the above-described electronic equipment embodiments.

[0089] When the above technical solution is adopted, when the air conditioner is in defrost mode, the frost on the outdoor heat exchanger melts into water and drips onto the chassis of the outdoor unit. At this time, the heating module on the chassis is also in the on state. On the one hand, it can remove the original ice on the chassis, and on the other hand, it can prevent the defrost water from freezing on the chassis, thereby ensuring the drainage effect of the chassis and the heat exchange efficiency of the outdoor heat exchanger.

[0090] Those skilled in the art will understand that although some embodiments described herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, any of the claimed embodiments in the claims of this application can be used in any combination.

[0091] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. An antifreeze control method for an air conditioner, characterized in that, The air conditioner includes an outdoor unit and an indoor unit. The outdoor unit includes an outdoor heat exchanger and a heating module. A defrost sensor is installed at the outlet of the outdoor heat exchanger, and at least part of the heating module is mounted on the chassis of the outdoor unit. The antifreeze control method includes: Obtain the ambient temperature and the outlet temperature of the outdoor heat exchanger; Based on the ambient temperature, determine the outlet temperature threshold; Determine the magnitude of the outlet temperature and the outlet temperature threshold. Based on the judgment result, the air conditioner is selectively controlled to operate in defrost mode and the heating module is turned on.

2. The antifreeze control method according to claim 1, characterized in that, The selective control of the air conditioner to operate in defrost mode and the heating module to start based on the judgment result further includes: When the outlet temperature is less than or equal to the outlet temperature threshold, the air conditioner is controlled to operate in defrost mode and the heating module is turned on.

3. The antifreeze control method according to claim 1, characterized in that, The determination of the outlet temperature threshold based on the ambient temperature further includes: The calculation formula for determining the outlet temperature threshold is based on the temperature range of the ambient temperature. The outlet temperature threshold is determined based on the calculation formula and the ambient temperature.

4. The antifreeze control method according to claim 1, characterized in that, The control of the air conditioner to operate in defrost mode and the activation of the heating module further includes: Control the air conditioner to operate in defrost mode and continue for a first preset duration; The heating module is controlled to turn on and remain on for a second preset duration; Wherein, the first preset duration is less than or equal to the second preset duration.

5. The antifreeze control method according to claim 4, characterized in that, The antifreeze control method further includes: After the heating module is turned on and maintained for the second preset duration, the heating module is turned off.

6. The antifreeze control method according to claim 4, characterized in that, The antifreeze control method further includes: After the heating module is turned on and continues for the second preset duration, it is determined whether there is water accumulation on the chassis; When there is no water accumulation on the chassis, the heating module is turned off.

7. The antifreeze control method according to claim 1, characterized in that, Some of the heating modules are also located on the top cover and / or air outlet grille of the outdoor unit of the air conditioner.

8. A computer-readable storage medium storing a plurality of program codes, characterized in that, The program code is adapted to be loaded and run by a processor to perform the antifreeze control method according to any one of claims 1 to 7.

9. An electronic device comprising a processor and a storage device, said storage device being adapted to store a plurality of program codes, characterized in that, The program code is adapted to be loaded and run by the processor to perform the antifreeze control method according to any one of claims 1 to 7.

10. An air conditioner, characterized in that, The air conditioner includes the electronic device as described in claim 9.

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