Defrosting control methods, devices, processors, and air conditioning systems for air conditioners

Abstract

This application provides a defrosting control method, apparatus, processor, and air conditioning system for an air conditioner. The method includes: when the air conditioner is in heating mode and the first defrosting has ended, determining a target frost zone based on at least one of the heating duration and defrosting duration, and the outer ambient temperature. The target frost zone is the frost zone to which the air conditioner belongs, and the frost zone characterizes the degree of frost formation on the surface of the outdoor heat exchanger of the air conditioner. The heating duration is the time from the start of heating to the start of the first defrosting, the defrosting duration is the duration of the first defrosting, and the outer ambient temperature is the outer ambient temperature of the air conditioner; determining a corresponding defrosting strategy based on the target frost zone; and controlling the air conditioner to defrost according to the defrosting strategy when the air conditioner starts defrosting again. This application solves the problem in the prior art that it cannot perform differentiated control of air conditioner defrosting, resulting in poor defrosting performance.

Description

Technical Field

[0001] This application relates to the field of air conditioning, and more specifically, to a defrosting control method, apparatus, computer-readable storage medium, processor, and air conditioning system for an air conditioner. Background Technology

[0002] When an air conditioner is running in heating mode in a low-temperature environment, the outdoor heat exchanger is in a low-temperature and high-humidity environment, so the surface of the outdoor heat exchanger is prone to frost. After frost, the heat exchange performance of the outdoor heat exchanger is significantly reduced, which will affect the operation of the air conditioner.

[0003] Currently, there are various methods for defrosting air conditioners. The conventional method is to determine whether the temperature of the air conditioner's external pipes and the heating time have reached certain conditions, and if so, defrosting is initiated. This method is simple and easy to implement, but it still controls the conditions for initiating defrosting in the same way for different outdoor humidity levels, which cannot be differentiated and results in poor defrosting performance.

[0004] The information disclosed above in the background section is only intended to enhance the understanding of the background art of the art described herein. Therefore, the background art may contain certain information that does not constitute prior art known to those skilled in the art in this country. Summary of the Invention

[0005] The main objective of this application is to provide a defrosting control method, device, computer-readable storage medium, processor, and air conditioning system for an air conditioner, in order to solve the problem that the prior art cannot perform differentiated control of defrosting of the air conditioner, resulting in poor defrosting effect.

[0006] According to one aspect of the present invention, a defrosting control method for an air conditioner is provided, comprising: when the air conditioner is in heating mode and the first defrosting has ended, determining a target frost zone based on at least one of heating duration and defrosting duration and an outer ring temperature, wherein the target frost zone is the frost zone to which the air conditioner belongs, the frost zone characterizing the degree of frost on the surface of the outdoor heat exchanger of the air conditioner, the heating duration being the time from the start of heating to the start of the first defrosting, the defrosting duration being the duration of the first defrosting, and the outer ring temperature being the outer ring temperature of the air conditioner; determining a corresponding defrosting strategy based on the target frost zone; and when the air conditioner starts defrosting again, controlling the air conditioner to defrost according to the defrosting strategy.

[0007] Optionally, the frost zone includes a light frost zone, a medium frost zone, and a heavy frost zone, with the degree of frost increasing sequentially. Determining the target frost zone based on at least one of the heating duration and the defrosting duration, and the outer ring temperature, includes: determining a first temperature range to which the outer ring temperature belongs as a target temperature range based on the outer ring temperature; and determining the frost zone corresponding to a first duration range to which the heating duration belongs within the target temperature range as the target frost zone based on the heating duration. Specifically, within the same first temperature range, the maximum value of the first duration range corresponding to the light frost zone, the medium frost zone, and the heavy frost zone decreases sequentially, and the minimum value of the corresponding first duration range decreases sequentially.

[0008] Optionally, the frost zone includes a light frost zone, a medium frost zone, and a heavy frost zone, with the degree of frost increasing sequentially. Determining the target frost zone based on at least one of the heating time and the defrosting time, and the outer ring temperature, includes: determining a second temperature range to which the outer ring temperature belongs as a target temperature range based on the outer ring temperature; and determining the frost zone corresponding to the second time range to which the defrosting time belongs within the target temperature range as the target frost zone based on the defrosting time. Specifically, within the same second temperature range, the maximum value of the second time range corresponding to the light frost zone, the medium frost zone, and the heavy frost zone increases sequentially, and the minimum value of the corresponding second time range also increases sequentially.

[0009] Optionally, the frost zone includes a light frost zone, a medium frost zone, and a heavy frost zone, with the degree of frost increasing sequentially. Determining the target frost zone based on at least one of the heating time and defrosting time, and the outer ring temperature, includes: determining a target ratio as the ratio of the defrosting time to the heating time; determining a target temperature range as the third temperature range to which the outer ring temperature belongs; and determining the frost zone corresponding to the ratio range to which the target ratio belongs within the target temperature range as the target frost zone, wherein, within the same third temperature range, the maximum value of the ratio range corresponding to the light frost zone, the medium frost zone, and the heavy frost zone increases sequentially, and the minimum value of the corresponding ratio range increases sequentially.

[0010] Optionally, a defrosting strategy is determined based on the target frost area, including: when the target frost area is the heavy frost area, the defrosting strategy is to perform a first predetermined number of thin frost defrosting operations followed by a regular defrosting operation, wherein the thin frost defrosting operation is an operation of continuously defrosting for a first preset duration while heating is in progress, and the regular defrosting operation is an operation of stopping heating, continuously defrosting for a second preset duration, and then resuming heating, wherein the first preset duration is less than the second preset duration; when the target frost area is the medium frost area, the defrosting strategy is to perform a second predetermined number of thin frost defrosting operations followed by a regular defrosting operation; when the target frost area is the light frost area, the defrosting strategy is to perform a third predetermined number of thin frost defrosting operations followed by a regular defrosting operation, wherein the first predetermined number, the second predetermined number, and the third predetermined number increase sequentially.

[0011] Optionally, before determining the target defrost zone based on at least one of the heating duration and defrost duration and the outer ring temperature, the method further includes: obtaining a first ring temperature and a second ring temperature, wherein the first ring temperature is the ambient temperature when the air conditioner is turned on, and the second ring temperature is the ambient temperature when the air conditioner begins the first defrost; if the second ring temperature is within a fourth temperature range, and the absolute value of the difference between the second ring temperature and the first ring temperature is less than or equal to a preset value, determining the average value of the second ring temperature and the first ring temperature as the outer ring temperature, wherein the preset value is determined based on the operating time of the air conditioner, and the longer the operating time, the larger the corresponding preset value; if the second ring temperature is within the fourth temperature range, and the absolute value of the difference is greater than the preset value, determining the second ring temperature as the outer ring temperature.

[0012] According to another aspect of the present invention, a defrosting control device for an air conditioner is also provided, comprising: a first determining unit, configured to determine a target frost zone based on at least one of a heating duration and a defrosting duration and an outer ring temperature when the air conditioner is in heating mode and the first defrosting has ended, wherein the target frost zone is the frost zone to which the air conditioner belongs, the frost zone characterizing the degree of frost on the surface of the outdoor heat exchanger of the air conditioner, the heating duration being the duration from the start of heating to the start of the first defrosting, the defrosting duration being the duration of the first defrosting, and the outer ring temperature being the outer ring temperature of the air conditioner; a second determining unit, configured to determine a corresponding defrosting strategy based on the target frost zone; and a control unit, configured to control the air conditioner to defrost according to the defrosting strategy when the air conditioner starts defrosting again.

[0013] According to another aspect of the present invention, a computer-readable storage medium is also provided, the computer-readable storage medium including a stored program, wherein the program executes any one of the methods described.

[0014] According to another aspect of the present invention, a processor is also provided, the processor being configured to run a program, wherein the program runs any one of the methods described.

[0015] According to another aspect of the present invention, an air conditioning system is also provided, comprising: an air conditioner; a controller for the air conditioner, the controller including one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including methods for performing any one of the methods described.

[0016] In this embodiment of the invention, after the air conditioner completes its first defrosting operation, the defrosting zone of the air conditioner is determined based on the outdoor ambient temperature and the air conditioner's heating and / or defrosting duration. A corresponding defrosting strategy is then determined based on this zone, and the air conditioner is controlled to perform subsequent defrosting operations according to this strategy. Since the heating and defrosting durations reflect the outdoor humidity levels, this application effectively determines the defrosting strategy based on the outdoor ambient temperature and humidity, achieving differentiated control of the air conditioner's defrosting based on the external environment. This ensures that subsequent defrosting operations are well-matched to the current outdoor environment, resulting in better defrosting performance. Furthermore, this application eliminates the need for a humidity sensor on the air conditioner to achieve differentiated defrosting control under different ambient temperatures and humidity levels, ensuring low defrosting control costs. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0018] Figure 1 A schematic flowchart of a defrosting control method for an air conditioner according to an embodiment of this application is shown;

[0019] Figure 2 A structural block diagram of a defrosting control device for an air conditioner according to an embodiment of this application is shown. Detailed Implementation

[0020] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0021] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0022] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0023] It should be understood that when an element (such as a layer, film, region, or substrate) is described as being "on" another element, the element may be directly on the other element, or there may be an intermediate element present. Furthermore, in the specification and claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element, or "connected" to the other element via a third element.

[0024] As mentioned in the background section, the prior art cannot differentiate the defrosting control of air conditioners, resulting in poor defrosting performance. In order to solve the aforementioned problem, in a typical embodiment of this application, a defrosting control method, apparatus, computer-readable storage medium, processor, and air conditioning system for air conditioners are provided.

[0025] According to an embodiment of this application, a defrosting control method for an air conditioner is provided.

[0026] Figure 1 This is a flowchart of a defrosting control method for an air conditioner according to an embodiment of this application. Figure 1 As shown, the method includes the following steps:

[0027] Step S101: When the air conditioner is in heating mode and the first defrosting has ended, a target frost zone is determined based on at least one of the heating duration and the defrosting duration, as well as the outer ring temperature. The target frost zone is the frost zone to which the air conditioner belongs. The frost zone characterizes the degree of frost on the surface of the outdoor heat exchanger of the air conditioner. The heating duration is the time from the start of heating to the start of the first defrosting. The defrosting duration is the duration of the first defrosting. The outer ring temperature is the outer ring temperature of the air conditioner.

[0028] Specifically, the first defrosting is when the air conditioner enters the defrosting mode based on preset judgment conditions (such as the temperature of the air conditioner's external pipe reaching the defrosting threshold, the air conditioner's heating time reaching the defrosting threshold, etc.) to perform defrosting operations on the surface of the outdoor heat exchanger.

[0029] In practical applications, those skilled in the art can divide the frost area into multiple frost areas of different degrees according to the actual situation, such as 3 or 4 frost areas. According to a specific embodiment of this application, the frost area includes a light frost area, a medium frost area, and a heavy frost area with the degree of frost increasing sequentially. The target frost area is determined based on at least one of the heating time and the defrosting time and the outer ring temperature, including: determining the first temperature range to which the outer ring temperature belongs as the target temperature range based on the outer ring temperature; and determining the frost area corresponding to the first time range to which the heating time belongs under the target temperature range as the target frost area based on the heating time. Among these, under the same first temperature range, the maximum value of the first time range corresponding to the light frost area, the medium frost area, and the heavy frost area decreases sequentially, and the minimum value of the corresponding first time range decreases sequentially. In the aforementioned embodiment, the frost zone is divided into light frost zone, medium frost zone, and heavy frost zone according to the degree of frost formation from low to high. First, the target temperature range to which it belongs is determined based on the outer ring temperature. Then, the frost zone corresponding to the first duration range of heating time under the target temperature range is determined as the target frost zone. This realizes the determination of the degree of frost formation based on the outer ring temperature and heating time, which further facilitates the subsequent differentiated air conditioning defrosting control based on the degree of frost formation, thereby further ensuring a better defrosting effect.

[0030] The first temperature range can be divided into 2, 3, or 4 intervals, and each first temperature range is further divided into multiple first duration ranges. Different first duration ranges correspond to different frost zones. In one specific embodiment, as shown in Table 1, this application divides the first temperature range into three intervals, each first temperature range corresponding to three first duration ranges, and each first duration range corresponding to one frost zone. Of course, in practice, different interval designs can be made based on the specific outer ring temperature, and it is not limited to 3 intervals and 3 frost zones.

[0031] Table 1

[0032]

[0033] If the temperature is outside the specified range or the heating duration does not meet the first duration range, the air conditioner's original control strategy will be executed. Since the outer ring temperature is outside this range, it indicates a high-temperature or ultra-low-temperature outer ring, making frosting unlikely. When the heating duration does not meet the requirement, one possibility is an exceptionally short heating duration, indicating an even more severe frost zone than the heavy frost zone, leaving no room for optimization. Another possibility is an exceptionally long duration, indicating a situation where frosting is unlikely, thus eliminating the need for optimization.

[0034] When the ambient temperature is within a certain first temperature range, the environmental conditions of the air conditioner are determined based on the duration of its continuous heating. If the heating time is relatively short, it indicates that the air conditioner is operating in the heavy frost zone; if the heating time is relatively long, it indicates that the air conditioner is operating in the light frost zone. This method can determine the frost zone of the air conditioner without adding an additional humidity sensor to the air conditioner.

[0035] Taking interval 1 as an example: when the calculated Ta ≤ Twp ≤ T 预设2 In the case of T 预设2 The value of Ta is located in [3, 5], with a preferred value of 4℃. The value of Ta is located in [-1, 1], with a preferred value of 0℃. Determine the continuous heating time from start-up to defrosting of the air conditioner; if the continuous heating time ta1 ≤ t1 < ta2, the time is relatively short, and it is determined to be a heavy frost zone. If the continuous heating time ta2 ≤ t1 < ta3, the time is relatively moderate, and it is determined to be a medium frost zone. If the continuous heating time ta3 ≤ t1 < ta4, the time is relatively long, and it is determined to be a light frost zone. Specifically, 30min ≤ ta1 < ta2 < ta3 < ta4 ≤ 300min. The value of Tb is located in [-6, -4], with a preferred value of 5℃. T 预设2 The value is located in the range of [-10, -8], with a preferred value of -9℃. Among them, 30min≤tb1<tb2<tb3<tb4≤300min, and 30min≤tc1<tc2<tc3<tc4≤300min.

[0036] In practical applications, those skilled in the art can divide the frost area into multiple frost areas of different degrees according to the degree of frost formation, such as 3 or 4 frost areas. According to another specific embodiment of this application, the frost area includes a light frost area, a medium frost area, and a heavy frost area with the degree of frost formation increasing sequentially. The target frost area is determined based on at least one of the heating time and the defrosting time, as well as the outer ring temperature. This includes: determining the second temperature range to which the outer ring temperature belongs as the target temperature range based on the outer ring temperature; and determining the frost area corresponding to the second time range to which the defrosting time belongs under the target temperature range as the target frost area based on the defrosting time. Among these, under the same second temperature range, the maximum value of the second time range corresponding to the light frost area, the medium frost area, and the heavy frost area increases sequentially, and the minimum value of the corresponding second time range increases sequentially. In the aforementioned embodiment, the frost zone is divided into light frost zone, medium frost zone, and heavy frost zone according to the degree of frost formation from low to high. First, the target temperature range to which it belongs is determined based on the outer ring temperature. Then, the frost zone corresponding to the second time range of the defrosting duration under the target temperature range is determined as the target frost zone. This realizes the determination of the degree of frost formation based on the outer ring temperature and the defrosting duration, which further facilitates the subsequent differentiated air conditioning defrosting control based on the degree of frost formation, thereby further ensuring a better defrosting effect.

[0037] Within the same timeframe, the external pipe temperature of the air conditioner is generally consistent when it enters defrost mode, and the defrosting frequency is also consistent. Therefore, the defrosting time can be used to determine the frost zone of the air conditioner. As shown in Table 2, a longer defrosting time indicates that the frost is thick or dense, making defrosting difficult. A shorter defrosting time indicates that defrosting is easy.

[0038] Table 2

[0039]

[0040] Where 4min≤tj1<tj2<tj3<tj4≤15min, 4min≤tk1<tk2<tk3<tk4≤15min, 4min≤tl1<tl2<tl3<tl4≤15min, Tc can be the same as or different from Ta, and similarly, Td can be the same as or different from Tb. 预设4 Can be with T 预设1 They can be the same, or they can be different; T 预设5 Can be with T 预设2 They can be the same, or they can be different.

[0041] In practical applications, those skilled in the art can divide the frost area into multiple frost areas of different degrees according to the degree of frost formation, such as 3 or 4 frost areas. According to another specific embodiment of this application, the frost area includes a light frost area, a medium frost area, and a heavy frost area with the degree of frost formation increasing sequentially, as shown in Table 3. The target frost area is determined based on at least one of the heating time and the defrosting time, as well as the outer ring temperature. This includes: determining the ratio of the defrosting time to the heating time as a target ratio based on the heating time and the defrosting time; determining the third temperature range to which the outer ring temperature belongs as the target temperature range based on the outer ring temperature; and determining the frost area corresponding to the ratio range to which the target ratio belongs under the target temperature range as the target frost area based on the target ratio. Among these, under the same third temperature range, the maximum value of the ratio range corresponding to the light frost area, the medium frost area, and the heavy frost area increases sequentially, and the minimum value of the corresponding ratio range increases sequentially. In the aforementioned embodiment, the frost zone is divided into light frost zone, medium frost zone, and heavy frost zone according to the degree of frost formation from low to high. First, the target temperature range to which it belongs is determined based on the outer ring temperature. Then, the frost zone corresponding to the third time range to which the target ratio belongs under the target temperature range is determined as the target frost zone. This realizes the determination of the degree of frost formation based on the outer ring temperature and the ratio of defrosting time to heating time, which further facilitates the subsequent differentiated air conditioning defrosting control based on the degree of frost formation, thereby further ensuring a better defrosting effect.

[0042] Table 3

[0043]

[0044]

[0045] Wherein, 0.1≤γ1<γ2<γ3<γ4≤0.5, 0.1≤δ1<δ2<δ3<δ4≤0.5, and 0.1≤η1<η2<η3<η4≤0.5. Of course, the target ratio is not limited to the ratio of defrosting time to heating time; it can also be the ratio of heating time to defrosting time.

[0046] Step S102: Determine the corresponding defrosting strategy based on the target frost area;

[0047] In one specific embodiment of this application, a corresponding defrosting strategy is determined based on the target frost area, including: when the target frost area is the heavy frost area, the defrosting strategy is determined to be to perform a first predetermined number of thin frost defrosting operations followed by a regular defrosting operation, wherein the thin frost defrosting operation is an operation of continuously defrosting for a first preset duration while heating is in progress, and the regular defrosting operation is an operation of stopping heating, continuously defrosting for a second preset duration, and then resuming heating, wherein the first preset duration is less than the second preset duration; when the target frost area is the medium frost area, the defrosting strategy is determined to perform a second predetermined number of thin frost defrosting operations followed by a regular defrosting operation; when the target frost area is the light frost area, the defrosting strategy is determined to perform a third predetermined number of thin frost defrosting operations followed by a regular defrosting operation, wherein the first predetermined number, the second predetermined number, and the third predetermined number increase sequentially.

[0048] In this embodiment, a light frost defrost is performed before the regular defrosting operation. Since heating continues during the light frost defrost process, this ensures a longer continuous heating time for the air conditioner, further improving user heating comfort. The number of light frost defrost operations needs to be determined based on the frost area. If too many light frost defrost operations are performed on heavily frost areas, the air conditioner may not completely remove the frost, leading to worsening of subsequent frost formation and affecting the air conditioner's heating capacity. Therefore, fewer light frost defrost operations are performed in heavily frost areas, and more in light frost areas. This maximizes the continuous heating time for different frost areas, thereby improving user heating comfort.

[0049] In one specific embodiment, the first predetermined number of times is [0, 3], the second predetermined number of times is [1, 4], and the third predetermined number of times is [2, 8].

[0050] Step S103: If the air conditioner starts defrosting again, control the air conditioner to defrost according to the defrosting strategy.

[0051] Furthermore, to further ensure the accuracy of the obtained outer ring temperature, and thus further ensure the accuracy of the target frost zone determined based on the outer ring temperature, in another specific embodiment of this application, before determining the target frost zone based on at least one of the heating duration and defrosting duration and the outer ring temperature, the method further includes: obtaining a first ring temperature and a second ring temperature, wherein the first ring temperature is the ambient temperature when the air conditioner is turned on, and the second ring temperature is the ambient temperature when the air conditioner begins the first defrosting; if the second ring temperature is within a fourth temperature range, and the absolute value of the difference between the second ring temperature and the first ring temperature is less than or equal to a preset value, determining the average value of the second ring temperature and the first ring temperature as the outer ring temperature, wherein the preset value is determined based on the operating time of the air conditioner, and the longer the operating time, the larger the corresponding preset value; if the second ring temperature is within the fourth temperature range, and the absolute value of the difference is greater than the preset value, determining the second ring temperature as the outer ring temperature.

[0052] In another specific embodiment, the relationship between the fourth temperature range and the preset value is shown in Table 4.

[0053] Table 4

[0054] Boot-up runtime Default value ≤2h 3℃ 2 hours or more 5℃

[0055] In the defrosting control method for the air conditioner, firstly, when the air conditioner is in heating mode and the first defrosting has ended, a target frost zone characterizing the degree of frost on the surface of the outdoor heat exchanger of the air conditioner is determined based on the outer ring temperature and one of the following: the heating time from the start of heating to the start of the first defrosting, and the duration of the first defrosting; then, a defrosting strategy is determined based on the target frost zone; finally, when the air conditioner starts defrosting again, the air conditioner is controlled to defrost according to the defrosting strategy. Compared to existing technologies that cannot differentiate defrosting control of air conditioners, resulting in poor defrosting performance, this application determines the defrosting zone of the air conditioner after the first defrosting operation, based on the outdoor ambient temperature and the air conditioner's heating and / or defrosting duration. Then, it determines the corresponding defrosting strategy based on the defrosting zone and controls the air conditioner to perform subsequent defrosting operations according to this strategy. Since the heating and defrosting durations reflect the outdoor humidity, this application effectively determines the defrosting strategy based on the outdoor ambient temperature and humidity, achieving differentiated defrosting control based on the external environment. This ensures that subsequent defrosting operations are well-matched to the current outdoor environment, guaranteeing better defrosting performance. Furthermore, this application eliminates the need for a humidity sensor on the air conditioner to achieve differentiated defrosting control under different ambient temperatures and humidity levels, ensuring lower defrosting control costs.

[0056] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0057] This application also provides a defrosting control device for an air conditioner. It should be noted that the defrosting control device for an air conditioner in this application can be used to execute the defrosting control method for an air conditioner provided in this application. The defrosting control device for an air conditioner provided in this application is described below.

[0058] Figure 2 This is a schematic diagram of a defrosting control device for an air conditioner according to an embodiment of this application. Figure 2 As shown, the device includes:

[0059] The first determining unit 10 is configured to determine a target frost zone based on at least one of the heating duration and the defrosting duration, and the outer ring temperature, when the air conditioner is in heating mode and the first defrosting has ended. The target frost zone is the frost zone to which the air conditioner belongs. The frost zone characterizes the degree of frost on the surface of the outdoor heat exchanger of the air conditioner. The heating duration is the time from the start of heating to the start of the first defrosting. The defrosting duration is the duration of the first defrosting. The outer ring temperature is the outer ring temperature of the air conditioner.

[0060] Specifically, the first defrosting is when the air conditioner enters the defrosting mode based on preset judgment conditions (such as the temperature of the air conditioner's external pipe reaching the defrosting threshold, the air conditioner's heating time reaching the defrosting threshold, etc.) to perform defrosting operations on the surface of the outdoor heat exchanger.

[0061] In practical applications, those skilled in the art can divide the frost area into multiple frost areas of different degrees according to the degree of frost formation, such as 3 or 4 frost areas. According to a specific embodiment of this application, the frost area includes a light frost area, a medium frost area, and a heavy frost area with the degree of frost formation increasing sequentially. The first determining unit includes: a first determining module, used to determine the first temperature range to which the outer ring temperature belongs as the target temperature range based on the outer ring temperature; and a second determining module, used to determine the frost area corresponding to the first duration range to which the heating time belongs under the target temperature range as the target frost area based on the heating time. Among these, under the same first temperature range, the maximum value of the first duration range corresponding to the light frost area, the medium frost area, and the heavy frost area decreases sequentially, and the minimum value of the corresponding first duration range decreases sequentially. In the aforementioned embodiment, the frost zone is divided into light frost zone, medium frost zone, and heavy frost zone according to the degree of frost formation from low to high. First, the target temperature range to which it belongs is determined based on the outer ring temperature. Then, the frost zone corresponding to the first duration range of heating time under the target temperature range is determined as the target frost zone. This realizes the determination of the degree of frost formation based on the outer ring temperature and heating time, which further facilitates the subsequent differentiated air conditioning defrosting control based on the degree of frost formation, thereby further ensuring a better defrosting effect.

[0062] The first temperature range can be divided into 2, 3, or 4 intervals, and each first temperature range is further divided into multiple first duration ranges. Different first duration ranges correspond to different frost zones. In one specific embodiment, as shown in Table 1, this application divides the first temperature range into three intervals, each first temperature range corresponding to three first duration ranges, and each first duration range corresponding to one frost zone. Of course, in practice, different interval designs can be made based on the specific outer ring temperature, and it is not limited to 3 intervals and 3 frost zones.

[0063] If the temperature is outside the specified range or the heating duration does not meet the first duration range, the air conditioner's original control strategy will be executed. Since the outer ring temperature is outside this range, it indicates a high-temperature or ultra-low-temperature outer ring, making frosting unlikely. When the heating duration does not meet the requirement, one possibility is an exceptionally short heating duration, indicating an even more severe frost zone than the heavy frost zone, leaving no room for optimization. Another possibility is an exceptionally long duration, indicating a situation where frosting is unlikely, thus eliminating the need for optimization.

[0064] When the ambient temperature is within a certain first temperature range, the system determines the environmental conditions of the air conditioner based on the duration of its continuous heating. A shorter heating time indicates the air conditioner is operating in a heavy frost zone, while a longer heating time indicates it is operating in a light frost zone. This device can determine the frost zone of the air conditioner without requiring an additional humidity sensor on the unit itself.

[0065] Taking interval 1 as an example: when the calculated Ta ≤ Twp ≤ T 预设2 In the case of T 预设2 The value of Ta is located in [3, 5], with a preferred value of 4℃. The value of Ta is located in [-1, 1], with a preferred value of 0℃. Determine the continuous heating time from start-up to defrosting of the air conditioner; if the continuous heating time ta1 ≤ t1 < ta2, the time is relatively short, and it is determined to be a heavy frost zone. If the continuous heating time ta2 ≤ t1 < ta3, the time is relatively moderate, and it is determined to be a medium frost zone. If the continuous heating time ta3 ≤ t1 < ta4, the time is relatively long, and it is determined to be a light frost zone. Specifically, 30min ≤ ta1 < ta2 < ta3 < ta4 ≤ 300min. The value of Tb is located in [-6, -4], with a preferred value of 5℃. T 预设2 The value is located in the range of [-10, -8], with a preferred value of -9℃. Among them, 30min≤tb1<tb2<tb3<tb4≤300min, and 30min≤tc1<tc2<tc3<tc4≤300min.

[0066] In practical applications, those skilled in the art can divide the frost area into multiple frost areas of different degrees according to the degree of frost formation, such as 3 or 4 frost areas. According to another specific embodiment of this application, the frost area includes a light frost area, a medium frost area, and a heavy frost area with the degree of frost formation increasing sequentially. The first determining unit includes: a third determining module, used to determine the second temperature range to which the outer ring temperature belongs as the target temperature range based on the outer ring temperature; and a fourth determining module, used to determine the frost area corresponding to the second time range to which the defrosting time belongs under the target temperature range as the target frost area based on the defrosting time. Among these, under the same second temperature range, the maximum value of the second time range corresponding to the light frost area, the medium frost area, and the heavy frost area increases sequentially, and the minimum value of the corresponding second time range increases sequentially. In the aforementioned embodiment, the frost zone is divided into light frost zone, medium frost zone, and heavy frost zone according to the degree of frost formation from low to high. First, the target temperature range to which it belongs is determined based on the outer ring temperature. Then, the frost zone corresponding to the second time range of the defrosting duration under the target temperature range is determined as the target frost zone. This realizes the determination of the degree of frost formation based on the outer ring temperature and the defrosting duration, which further facilitates the subsequent differentiated air conditioning defrosting control based on the degree of frost formation, thereby further ensuring a better defrosting effect.

[0067] Within the same timeframe, the external pipe temperature of the air conditioner is generally consistent when it enters defrost mode, and the defrosting frequency is also consistent. Therefore, the defrosting time can be used to determine the frost zone of the air conditioner. As shown in Table 2, a longer defrosting time indicates that the frost is thick or dense, making defrosting difficult. A shorter defrosting time indicates that defrosting is easy.

[0068] Where 4min≤tj1<tj2<tj3<tj4≤15min, 4min≤tk1<tk2<tk3<tk4≤15min, 4min≤tl1<tl2<tl3<tl4≤15min, Tc can be the same as or different from Ta, and similarly, Td can be the same as or different from Tb. 预设4 Can be with T 预设1 They can be the same, or they can be different; T 预设5 Can be with T 预设2 They can be the same, or they can be different.

[0069] In practical applications, those skilled in the art can divide the frost area into multiple frost areas of different degrees according to the degree of frost formation, such as 3 or 4 frost areas. According to another specific embodiment of this application, the frost area includes a light frost area, a medium frost area, and a heavy frost area with the degree of frost formation increasing sequentially, as shown in Table 3. The first determining unit includes: a fifth determining module, used to determine the ratio of the defrosting time to the heating time as a target ratio value based on the heating time and the defrosting time; a sixth determining module, used to determine the third temperature range to which the outer ring temperature belongs as a target temperature range based on the outer ring temperature; and a seventh determining module, used to determine the frost area corresponding to the ratio range to which the target ratio value belongs under the target temperature range as the target frost area based on the target ratio value. Among these, under the same third temperature range, the maximum value of the ratio range corresponding to the light frost area, the medium frost area, and the heavy frost area increases sequentially, and the minimum value of the corresponding ratio range increases sequentially. In the aforementioned embodiment, the frost zone is divided into light frost zone, medium frost zone, and heavy frost zone according to the degree of frost formation from low to high. First, the target temperature range to which it belongs is determined based on the outer ring temperature. Then, the frost zone corresponding to the third time range to which the target ratio belongs under the target temperature range is determined as the target frost zone. This realizes the determination of the degree of frost formation based on the outer ring temperature and the ratio of defrosting time to heating time, which further facilitates the subsequent differentiated air conditioning defrosting control based on the degree of frost formation, thereby further ensuring a better defrosting effect.

[0070] Wherein, 0.1≤γ1<γ2<γ3<γ4≤0.5, 0.1≤δ1<δ2<δ3<δ4≤0.5, and 0.1≤η1<η2<η3<η4≤0.5. Of course, the target ratio is not limited to the ratio of defrosting time to heating time; it can also be the ratio of heating time to defrosting time.

[0071] The second determining unit 20 is used to determine the corresponding defrosting strategy based on the target frost area;

[0072] In one specific embodiment of this application, the second determining unit includes: a seventh determining module, configured to determine, when the target frost area is the heavy frost area, that the defrosting strategy is to perform a regular defrosting operation after repeatedly performing a first predetermined number of thin frost defrosting operations, wherein the thin frost defrosting operation is an operation of continuously defrosting for a first preset duration while heating, and the regular defrosting operation is an operation of stopping heating, continuously defrosting for a second preset duration, and then continuing to heat, wherein the first preset duration is less than the second preset duration; an eighth determining module, configured to determine, when the target frost area is the medium frost area, that the defrosting strategy is to perform the regular defrosting operation after repeatedly performing the thin frost defrosting operations for a second predetermined number of times; and a ninth determining module, configured to determine, when the target frost area is the light frost area, that the defrosting strategy is to perform the regular defrosting operation after repeatedly performing the thin frost defrosting operations for a third predetermined number of times, wherein the first predetermined number of times, the second predetermined number of times, and the third predetermined number of times increase sequentially.

[0073] In this embodiment, a light frost defrost is performed before the regular defrosting operation. Since heating continues during the light frost defrost process, this ensures a longer continuous heating time for the air conditioner, further improving user heating comfort. The number of light frost defrost operations needs to be determined based on the frost area. If too many light frost defrost operations are performed on heavily frost areas, the air conditioner may not completely remove the frost, leading to worsening of subsequent frost formation and affecting the air conditioner's heating capacity. Therefore, fewer light frost defrost operations are performed in heavily frost areas, and more in light frost areas. This maximizes the continuous heating time for different frost areas, thereby improving user heating comfort.

[0074] In one specific embodiment, the first predetermined number of times is [0, 3], the second predetermined number of times is [1, 4], and the third predetermined number of times is [2, 8].

[0075] The control unit 30 is configured to control the air conditioner to defrost according to the defrosting strategy when the air conditioner starts defrosting again.

[0076] In addition, to further ensure the accuracy of the obtained outer ring temperature, and thus further ensure the accuracy of the target frost zone determined based on the outer ring temperature, in another specific embodiment of this application, the device further includes: an acquisition unit, configured to acquire a first ring temperature and a second ring temperature before determining the target frost zone based on at least one of the heating duration and defrosting duration and the outer ring temperature, wherein the first ring temperature is the ambient temperature when the air conditioner is turned on, and the second ring temperature is the ambient temperature when the air conditioner begins the first defrosting; a third determination unit, configured to determine the average of the second ring temperature and the first ring temperature as the outer ring temperature when the second ring temperature is within a fourth temperature range and the absolute value of the difference between the second ring temperature and the first ring temperature is less than or equal to a preset value, wherein the preset value is determined based on the operating time of the air conditioner, and the larger the operating time, the larger the corresponding preset value; and a fourth determination unit, configured to determine the second ring temperature as the outer ring temperature when the second ring temperature is within the fourth temperature range and the absolute value of the difference is greater than the preset value.

[0077] In another specific embodiment, the relationship between the fourth temperature range and the preset value is shown in Table 4.

[0078] In the defrosting control device of the air conditioner, when the air conditioner is in heating mode and the first defrosting has ended, the first determining unit determines the target frost area, which characterizes the degree of frost on the surface of the outdoor heat exchanger of the air conditioner, based on the outer ring temperature and one of the following: the heating time from the start of heating to the start of the first defrosting, and the duration of the first defrosting. The second determining unit determines the defrosting strategy based on the target frost area. When the air conditioner starts defrosting again, the control unit controls the air conditioner to defrost according to the defrosting strategy. Compared to existing technologies that cannot differentiate defrosting control of air conditioners, resulting in poor defrosting performance, this application determines the defrosting zone of the air conditioner after the first defrosting operation, based on the outdoor ambient temperature and the air conditioner's heating and / or defrosting duration. Then, it determines the corresponding defrosting strategy based on the defrosting zone and controls the air conditioner to perform subsequent defrosting operations according to this strategy. Since the heating and defrosting durations reflect the outdoor humidity, this application effectively determines the defrosting strategy based on the outdoor ambient temperature and humidity, achieving differentiated defrosting control based on the external environment. This ensures that subsequent defrosting operations are well-matched to the current outdoor environment, guaranteeing better defrosting performance. Furthermore, this application eliminates the need for a humidity sensor on the air conditioner to achieve differentiated defrosting control under different ambient temperatures and humidity levels, ensuring lower defrosting control costs.

[0079] The defrosting control device of the air conditioner includes a processor and a memory. The first determining unit, the second determining unit, and the control unit are all stored as program units in the memory. The processor executes the program units stored in the memory to realize the corresponding functions.

[0080] The processor contains a kernel, which retrieves the corresponding program unit from memory. One or more kernels can be configured, and adjusting kernel parameters can address the problem in existing technologies where differentiated control of defrosting in air conditioners is not possible, resulting in poor defrosting performance.

[0081] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0082] This invention provides a computer-readable storage medium storing a program thereon, which, when executed by a processor, implements the defrosting control method for the air conditioner.

[0083] This invention provides a processor for running a program, wherein the program executes the defrosting control method of the air conditioner.

[0084] This invention provides a device including a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it performs at least the following steps:

[0085] Step S101: When the air conditioner is in heating mode and the first defrosting has ended, a target frost zone is determined based on at least one of the heating duration and the defrosting duration, as well as the outer ring temperature. The target frost zone is the frost zone to which the air conditioner belongs. The frost zone characterizes the degree of frost on the surface of the outdoor heat exchanger of the air conditioner. The heating duration is the time from the start of heating to the start of the first defrosting. The defrosting duration is the duration of the first defrosting. The outer ring temperature is the outer ring temperature of the air conditioner.

[0086] Step S102: Determine the corresponding defrosting strategy based on the target frost area;

[0087] Step S103: If the air conditioner starts defrosting again, control the air conditioner to defrost according to the defrosting strategy.

[0088] The devices mentioned in this article can be servers, PCs, tablets, mobile phones, etc.

[0089] This application also provides a computer program product, which, when executed on a data processing device, is suitable for executing an initialization program having at least the following method steps:

[0090] Step S101: When the air conditioner is in heating mode and the first defrosting has ended, a target frost zone is determined based on at least one of the heating duration and the defrosting duration, as well as the outer ring temperature. The target frost zone is the frost zone to which the air conditioner belongs. The frost zone characterizes the degree of frost on the surface of the outdoor heat exchanger of the air conditioner. The heating duration is the time from the start of heating to the start of the first defrosting. The defrosting duration is the duration of the first defrosting. The outer ring temperature is the outer ring temperature of the air conditioner.

[0091] Step S102: Determine the corresponding defrosting strategy based on the target frost area;

[0092] Step S103: If the air conditioner starts defrosting again, control the air conditioner to defrost according to the defrosting strategy.

[0093] According to another typical embodiment of this application, an air conditioning system is also provided, comprising: an air conditioner; a controller for the air conditioner, the controller including one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including methods for performing any one of the methods described.

[0094] The air conditioning system includes an air conditioner and its controller, the controller being used to execute any of the methods described. Compared to existing technologies that cannot differentiate defrosting control of the air conditioner, resulting in poor defrosting performance, this method, after the air conditioner completes its first defrosting operation, determines the defrost zone of the air conditioner based on the outdoor ambient temperature and the air conditioner's heating and / or defrosting duration. Then, it determines the corresponding defrosting strategy based on the defrost zone and controls the air conditioner to perform subsequent defrosting operations according to this strategy. Since the heating and defrosting durations reflect the outdoor ambient humidity, this application is equivalent to determining the defrosting strategy based on the outdoor ambient temperature and humidity, achieving differentiated defrosting control of the air conditioner based on the external environment. This ensures that subsequent defrosting operations are well-matched to the current outdoor environment, guaranteeing better defrosting performance. Furthermore, this application eliminates the need to install a humidity sensor on the air conditioner to achieve differentiated defrosting control for air conditioners under different ambient temperatures and humidity levels, ensuring lower defrosting control costs.

[0095] In the embodiments described in this invention, each embodiment has its own emphasis. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0096] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0097] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0098] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0099] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0100] As can be seen from the above description, the embodiments described in this application achieve the following technical effects:

[0101] 1) In the defrosting control method of the air conditioner described in this application, firstly, when the air conditioner is in heating mode and the first defrosting has ended, a target frost zone characterizing the degree of frost on the surface of the outdoor heat exchanger of the air conditioner is determined based on the outer ring temperature and one of the following: the heating time from the start of heating to the start of the first defrosting, and the duration of the first defrosting; then, a defrosting strategy is determined based on the target frost zone; finally, when the air conditioner starts defrosting again, the air conditioner is controlled to defrost according to the defrosting strategy. Compared to existing technologies that cannot differentiate defrosting control of air conditioners, resulting in poor defrosting performance, this application determines the defrosting zone of the air conditioner after the first defrosting operation, based on the outdoor ambient temperature and the air conditioner's heating and / or defrosting duration. Then, it determines the corresponding defrosting strategy based on the defrosting zone and controls the air conditioner to perform subsequent defrosting operations according to this strategy. Since the heating and defrosting durations reflect the outdoor humidity, this application effectively determines the defrosting strategy based on the outdoor ambient temperature and humidity, achieving differentiated defrosting control based on the external environment. This ensures that subsequent defrosting operations are well-matched to the current outdoor environment, guaranteeing better defrosting performance. Furthermore, this application eliminates the need for a humidity sensor on the air conditioner to achieve differentiated defrosting control under different ambient temperatures and humidity levels, ensuring lower defrosting control costs.

[0102] 2) In the defrosting control device for the air conditioner described in this application, when the air conditioner is in heating mode and the first defrosting has ended, the first determining unit determines the target frost area characterizing the degree of frost on the surface of the outdoor heat exchanger of the air conditioner based on the outer ring temperature and one of the following: the heating time from the start of heating to the start of the first defrosting, and the duration of the first defrosting; the second determining unit determines the defrosting strategy based on the target frost area; and the control unit controls the air conditioner to defrost according to the defrosting strategy when the air conditioner starts defrosting again. Compared to existing technologies that cannot differentiate defrosting control of air conditioners, resulting in poor defrosting performance, this application determines the defrosting zone of the air conditioner after the first defrosting operation, based on the outdoor ambient temperature and the air conditioner's heating and / or defrosting duration. Then, it determines the corresponding defrosting strategy based on the defrosting zone and controls the air conditioner to perform subsequent defrosting operations according to this strategy. Since the heating and defrosting durations reflect the outdoor humidity, this application effectively determines the defrosting strategy based on the outdoor ambient temperature and humidity, achieving differentiated defrosting control based on the external environment. This ensures that subsequent defrosting operations are well-matched to the current outdoor environment, guaranteeing better defrosting performance. Furthermore, this application eliminates the need for a humidity sensor on the air conditioner to achieve differentiated defrosting control under different ambient temperatures and humidity levels, ensuring lower defrosting control costs.

[0103] 3) The air conditioning system described in this application includes an air conditioner and its controller, wherein the controller is used to execute any of the methods described. Compared with the prior art, which cannot differentiate the defrosting control of the air conditioner, resulting in poor defrosting effect, this method, after the air conditioner completes the first defrosting operation, determines the defrosting zone to which the air conditioner belongs based on the outdoor ambient temperature and the air conditioner's heating time and / or defrosting time, then determines the corresponding defrosting strategy based on the defrosting zone, and controls the air conditioner to perform subsequent defrosting operations according to the defrosting strategy. Since the heating time and defrosting time can reflect the outdoor ambient humidity of the air conditioner, this application is equivalent to determining the defrosting strategy based on the outdoor ambient temperature and outdoor ambient humidity, achieving the purpose of differentiated control of the air conditioner's defrosting based on the external environment, ensuring that subsequent defrosting operations are well matched with the current outdoor environment, and ensuring a better defrosting effect. Furthermore, this application does not require the installation of a humidity sensor on the air conditioner to achieve differentiated defrosting control of the air conditioner under different ambient temperatures and humidity levels, ensuring low defrosting control costs.

[0104] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A defrosting control method for an air conditioner, characterized in that, include: When the air conditioner is in heating mode and the first defrosting has ended, a target frost zone is determined based on at least one of the heating duration and the defrosting duration, as well as the outer ring temperature. The target frost zone is the frost zone to which the air conditioner belongs. The frost zone characterizes the degree of frost on the surface of the outdoor heat exchanger of the air conditioner. The heating duration is the time from the start of heating to the start of the first defrosting. The defrosting duration is the duration of the first defrosting. The outer ring temperature is the outer ring temperature of the air conditioner. Based on the target frost area, determine the corresponding defrosting strategy; If the air conditioner starts defrosting again, control the air conditioner to defrost according to the defrosting strategy. Before determining the target defrost zone based on at least one of the heating duration and defrost duration, and the outer ring temperature, the method further includes: acquiring a first ring temperature and a second ring temperature, wherein the first ring temperature is the ambient temperature when the air conditioner is turned on, and the second ring temperature is the ambient temperature when the air conditioner begins the first defrost; if the second ring temperature is within a fourth temperature range, and the absolute value of the difference between the second ring temperature and the first ring temperature is less than or equal to a preset value, determining the average of the second ring temperature and the first ring temperature as the outer ring temperature, wherein the preset value is determined based on the operating time of the air conditioner, and the longer the operating time, the larger the corresponding preset value; if the second ring temperature is within the fourth temperature range, and the absolute value of the difference is greater than the preset value, determining the second ring temperature as the outer ring temperature.

2. The method according to claim 1, characterized in that, The frost zone includes a light frost zone, a medium frost zone, and a heavy frost zone, with the degree of frost increasing sequentially. The target frost zone is determined based on at least one of the heating duration and defrosting duration, as well as the outer ring temperature, and includes: Based on the outer ring temperature, the first temperature range to which the outer ring temperature belongs is determined as the target temperature range; Based on the heating duration, the frost zone corresponding to the first duration range to which the heating duration belongs under the target temperature range is determined as the target frost zone. Among them, under the same first temperature range, the maximum value of the first duration range corresponding to the light frost zone, the medium frost zone and the heavy frost zone decreases sequentially, and the minimum value of the corresponding first duration range decreases sequentially.

3. The method according to claim 1, characterized in that, The frost zone includes a light frost zone, a medium frost zone, and a heavy frost zone, with the degree of frost increasing sequentially. The target frost zone is determined based on at least one of the heating duration and defrosting duration, as well as the outer ring temperature, and includes: Based on the outer ring temperature, the second temperature range to which the outer ring temperature belongs is determined as the target temperature range; Based on the defrosting time, the frost area corresponding to the second time range to which the defrosting time belongs under the target temperature range is determined as the target frost area. Among them, under the same second temperature range, the maximum value of the second time range corresponding to the light frost area, the medium frost area and the heavy frost area increases sequentially, and the minimum value of the corresponding second time range increases sequentially.

4. The method according to claim 1, characterized in that, The frost zone includes a light frost zone, a medium frost zone, and a heavy frost zone, with the degree of frost increasing sequentially. The target frost zone is determined based on at least one of the heating duration and defrosting duration, as well as the outer ring temperature, and includes: Based on the heating time and the defrosting time, the ratio of the defrosting time to the heating time is determined as the target ratio. Based on the outer ring temperature, the third temperature range to which the outer ring temperature belongs is determined as the target temperature range; Based on the target ratio, the frost region corresponding to the ratio range to which the target ratio belongs under the target temperature range is determined as the target frost region. Among them, under the same third temperature range, the maximum value of the ratio range corresponding to the light frost region, the medium frost region and the heavy frost region increases sequentially, and the minimum value of the corresponding ratio range increases sequentially.

5. The method according to any one of claims 2 to 4, characterized in that, Based on the target frost area, determine the corresponding defrosting strategy, including: When the target frost area is the heavy frost area, the defrosting strategy is determined to be to perform a first predetermined number of thin frost defrosting operations and then perform a regular defrosting operation. The thin frost defrosting operation is to continuously defrost for a first preset duration while heating, and the regular defrosting operation is to stop heating, continuously defrost for a second preset duration, and then continue heating. The first preset duration is less than the second preset duration. If the target frost area is the medium frost area, the defrosting strategy is determined to be to perform the regular defrosting operation after repeatedly performing the thin frost defrosting operation a second predetermined number of times. When the target frost area is the light frost area, the defrosting strategy is determined to be to perform the light frost defrosting operation a third predetermined number of times and then perform the regular defrosting operation, wherein the first predetermined number of times, the second predetermined number of times, and the third predetermined number of times increase sequentially.

6. A defrosting control device for an air conditioner, characterized in that, include: The first determining unit is configured to determine a target frost zone based on at least one of the heating duration and the defrosting duration, and the outer ring temperature, when the air conditioner is in heating mode and the first defrosting has ended. The target frost zone is the frost zone to which the air conditioner belongs, and the frost zone characterizes the degree of frost on the surface of the outdoor heat exchanger of the air conditioner. The heating duration is the time from the start of heating to the start of the first defrosting, the defrosting duration is the duration of the first defrosting, and the outer ring temperature is the outer ring temperature of the air conditioner. The second determining unit is used to determine the corresponding defrosting strategy based on the target frost area; The control unit is configured to control the air conditioner to defrost according to the defrosting strategy when the air conditioner restarts defrosting. An acquisition unit is configured to acquire a first ambient temperature and a second ambient temperature before determining the target defrost zone based on at least one of heating duration and defrost duration and the outer ambient temperature, wherein the first ambient temperature is the ambient temperature when the air conditioner is turned on, and the second ambient temperature is the ambient temperature when the air conditioner begins the first defrost; a third determination unit is configured to determine the average of the second ambient temperature and the first ambient temperature as the outer ambient temperature when the second ambient temperature is within a fourth temperature range and the absolute value of the difference between the second ambient temperature and the first ambient temperature is less than or equal to a preset value, wherein the preset value is determined based on the operating duration of the air conditioner, and the longer the operating duration, the larger the corresponding preset value; a fourth determination unit is configured to determine the second ambient temperature as the outer ambient temperature when the second ambient temperature is within the fourth temperature range and the absolute value of the difference is greater than the preset value.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein the program performs the method according to any one of claims 1 to 5.

8. A processor, characterized in that, The processor is used to run a program, wherein the program executes the method according to any one of claims 1 to 5 when it runs.

9. An air conditioning system, characterized in that, include: Air conditioner; The controller of the air conditioner includes one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs include methods for performing any one of claims 1 to 5.

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