A heating defrosting control method, apparatus, air conditioner, and readable storage medium.

Abstract

This invention provides a heating defrosting control method, device, air conditioner, and readable storage medium. The control method includes: activating the defrosting mode of the air conditioner, stopping the outdoor fan, monitoring the outdoor fan speed in real time, and entering the heating defrosting control mode when the fan speed meets a first preset condition. The outdoor fan is then controlled according to a preset control method. This heating defrosting control mode is used to eliminate the negative impact of the external environment on defrosting. By setting the heating defrosting control mode, this invention monitors the impact of the external environment on the air conditioner's defrosting process in real time. When the outdoor ambient temperature is low and the outdoor fan is running stably at a relatively high speed, it indicates that the outside natural wind is steadily blowing across the outdoor heat exchanger, carrying away a large amount of heat from the surface of the heat exchanger and severely affecting the defrosting efficiency of the air conditioner. At this time, activating the outdoor fan and controlling it to run at the same speed in the opposite direction can effectively counteract the pressure difference caused by the natural wind, ensuring the defrosting efficiency of the air conditioner.

Description

Technical Field

[0001] This invention relates to the field of air conditioners, and more specifically, to a heating defrosting control method, apparatus, air conditioner, and readable storage medium. Background Technology

[0002] When an air conditioner is in heating mode, frost will form on the outdoor heat exchanger in low-temperature, high-humidity outdoor conditions. When the frost layer reaches a certain thickness, it will affect the heating effect and even the reliability of the air conditioner's operation, thus requiring defrosting. Current inverter air conditioners generally use a four-way valve to switch directions, stopping the indoor and outdoor fans to defrost the outdoor unit's condenser. When the frost on the outdoor unit's condenser is completely melted, the outdoor unit's surface temperature will rise. By sampling the outdoor unit's surface temperature, it can be determined whether the frost has completely melted, and the defrosting process can be stopped, resuming heating.

[0003] However, to avoid excessively long defrosting times, insufficient room heat, and excessive temperature drops, a maximum defrosting time is usually set. Once this time is exceeded, defrosting will stop even if the outdoor coil temperature has not reached the defrosting exit temperature. In most scenarios, defrosting can be completed within the maximum defrosting time. However, when the outdoor temperature is very low and there is natural wind blowing across the outdoor condenser, the heat generated during defrosting is quickly carried away, resulting in poor defrosting efficiency and preventing defrosting from being completed within the maximum time. Ultimately, frost accumulates, causing reliability issues with the air conditioner's operation. Summary of the Invention

[0004] The problem solved by this invention is that in the prior art, when the outdoor temperature is very low and there is a natural wind blowing over the outdoor condenser, the heat for defrosting is quickly carried away, resulting in a poor defrosting effect. Defrosting cannot be completed within the longest possible time, and eventually, frost accumulates, causing reliability issues in the operation of the air conditioner.

[0005] To address the above problems, this invention provides a heating defrosting control method for an air conditioner, the air conditioner including an outdoor fan, the control method comprising:

[0006] When the air conditioner starts the defrosting mode, the outdoor fan stops running. The speed of the outdoor fan is monitored in real time. When the speed meets the first preset condition, the air conditioner enters the heating defrosting control mode and controls the operation of the outdoor fan according to the preset control method. The heating defrosting control mode is used to eliminate the negative impact of the external environment on defrosting.

[0007] By monitoring changes in the outdoor fan speed, the system determines whether the air conditioner is defrosting smoothly. If defrosting is not smooth, the heating defrosting control mode is activated. This mode eliminates the negative impact of the external environment on defrosting, ensuring the defrosting efficiency of the air conditioner and enabling it to complete the defrosting process smoothly within the preset maximum defrosting time. This prevents frost from accumulating thicker and thicker in the new operating cycle, thereby ensuring the heating effect of the air conditioner and improving the user experience.

[0008] Furthermore, the first preset condition includes: within a first preset time period, the change in the rotational speed of the external fan is less than or equal to a first preset value.

[0009] When the air conditioner is in defrost mode, the outdoor fan stops running. When natural wind blows, it can easily cause the outdoor fan to rotate. At this time, the reason for the rotation can be preliminarily judged by the change in the outdoor fan speed. If natural wind blows continuously for a long time, it will cause the outdoor fan to rotate at a relatively stable speed. In this case, under the combined action of natural wind and outdoor fan, the heat used for defrosting on the outdoor heat exchanger will be carried away, which will seriously affect its defrosting efficiency and defrosting speed. Therefore, when the change in outdoor fan speed is less than or equal to the first preset value, it means that there is continuous natural wind blowing on the outdoor heat exchanger. If the outdoor temperature is low at this time, it will seriously affect the defrosting of the outdoor heat exchanger. It is necessary to enter the heating defrosting control mode to eliminate the impact of natural wind on defrosting efficiency, so as to complete the defrosting work smoothly within the longest time and ensure the user experience.

[0010] Furthermore, the first preset time ranges from 3 to 7 seconds, and the first preset value ranges from 8 to 12 RPM.

[0011] When the speed of the outdoor fan changes between 8 and 12 RPM within a time range of 3-7 seconds, it indicates that the outdoor unit of the air conditioner is under stable natural wind blowing and the surface of the outdoor heat exchanger is being blown by the wind. This poses a serious risk to the defrosting efficiency of the air conditioner and needs to be controlled.

[0012] Furthermore, "controlling the operation of the external fan according to the preset control method" includes:

[0013] Detect the outdoor ambient temperature and compare it with a preset temperature threshold;

[0014] When the outdoor ambient temperature is greater than or equal to the preset temperature threshold, the outdoor fan remains in a stopped state;

[0015] When the outdoor ambient temperature is lower than the preset temperature threshold, the outdoor fan speed is continuously monitored, and the operating status of the outdoor fan is controlled according to the monitoring results.

[0016] When the outdoor temperature is high, even if natural wind blows across the outdoor unit of the air conditioner, causing the outdoor fan to rotate, it will only accelerate the defrosting speed of the air conditioner and will not have a negative impact on defrosting. In this case, the outdoor fan does not need to run and can remain in a stopped state to achieve high defrosting efficiency, allowing the air conditioner to complete defrosting within the preset maximum defrosting time and then switch to heating mode, thus improving the user experience. However, when the temperature is low, natural wind will carry away a large amount of heat used for defrosting, seriously affecting defrosting efficiency and speed, and impacting the user experience. Appropriate technical means need to be adopted to eliminate the negative impact of natural wind in order to ensure the user experience.

[0017] Furthermore, the preset temperature threshold value ranges from 3 to 5°C.

[0018] When the outdoor ambient temperature is greater than or equal to the preset temperature threshold, natural wind blowing over the outdoor heat exchanger can still play a corresponding defrosting role, allowing the defrosting mode to operate smoothly. At this time, there is no need to turn on the outdoor fan, saving energy while ensuring the defrosting efficiency of the air conditioner. When the outdoor ambient temperature is less than the preset temperature threshold, it means that the outdoor ambient temperature is low. At this time, natural wind blowing over the outdoor heat exchanger will take away a large amount of heat, resulting in a longer defrosting time required by the air conditioner and seriously reducing the defrosting efficiency of the air conditioner. Appropriate measures need to be taken to reduce the impact of natural wind.

[0019] Furthermore, "controlling the operating status of the external fan based on the monitoring results of the external fan speed" includes:

[0020] The monitored external fan speed V 测 With preset speed V 预 Compare;

[0021] When V 测 ≤V 预 At this time, the external fan remains stopped.

[0022] When V 测 >V 预 At this time, start the outdoor fan and control its speed V1 = -V 测 ;

[0023] Where V1 is the operating speed of the external fan after startup, V1 = -V 测 This refers to the difference between the outdoor fan speed V after startup and the monitored outdoor fan speed. 测 Rotate in opposite directions at the same speed.

[0024] When V 测 ≤V 预When V indicates that the outdoor fan is rotating at a low speed under the influence of natural wind, the natural wind is weak, and there is no wind blowing over the surface of the outdoor heat exchanger. This has almost no impact on the defrosting efficiency of the air conditioner, and the air conditioner can complete defrosting within the preset maximum defrosting time. At this time, it is not necessary to start the outdoor fan; maintaining the normal defrosting program is sufficient to ensure reliable defrosting. 测 >V 预 When the natural wind is strong, it indicates a significant pressure difference between the inside and outside of the outdoor unit, causing the outdoor fan to rotate at a high speed. At this time, the outdoor fan and the natural wind carry away a large amount of heat from the surface of the outdoor heat exchanger, resulting in a decrease in the defrosting efficiency of the air conditioner, preventing it from completing defrosting within the preset maximum defrosting time. In this situation, the outdoor fan is started and runs at the same speed in the opposite direction of the natural wind, offsetting the pressure difference between the inside and outside of the outdoor unit caused by the natural wind. This also minimizes the wind speed at the outdoor heat exchanger, allowing it to complete defrosting within the preset maximum defrosting time, ensuring the reliability of the air conditioner's defrosting and guaranteeing the user experience.

[0025] Furthermore, the preset rotational speed V 预 The value range is 80-120 RPM.

[0026] When the monitored outdoor fan speed is less than or equal to the preset speed, it indicates that the natural wind is weak, the pressure difference between the inside and outside of the outdoor unit is not large, and there is no wind blowing over the surface of the outdoor heat exchanger. The natural wind has almost no impact on the defrosting of the air conditioner. At this time, it is sufficient to keep the outdoor fan in a stopped state, which saves energy while ensuring the defrosting efficiency of the air conditioner. When the monitored outdoor fan speed is greater than the preset speed, it indicates that the natural wind is strong, the pressure difference between the inside and outside of the outdoor unit is large, and there is wind blowing over the surface of the outdoor heat exchanger, which will take away the heat used for defrosting. At this time, turning on the outdoor fan can offset the pressure difference of the natural wind, minimize the wind speed at the outdoor heat exchanger, and ensure the defrosting efficiency of the air conditioner.

[0027] The present invention also discloses a heating defrosting control device, comprising:

[0028] The outdoor fan speed monitoring module is used to monitor the speed of the outdoor fan in real time.

[0029] The calculation module is used at least for calculating the change in the external fan speed;

[0030] The judgment module is used to determine whether the speed of the external fan meets the first preset condition.

[0031] Through the collaboration between the above modules, the defrosting of the air conditioner is controlled. When the outside natural wind has a negative effect on the defrosting efficiency of the air conditioner, even if the corresponding external fan control method is adopted, the impact of the natural wind on the defrosting mode of the air conditioner is minimized, so that the defrosting of the air conditioner can be completed smoothly within the preset maximum defrosting time, ensuring the user experience.

[0032] The present invention also discloses an air conditioner, including a computer-readable storage medium storing a computer program and a processor, wherein the computer program is read and executed by the processor to implement a heating and defrosting control method as described above.

[0033] The advantages of the air conditioner and the above-mentioned heating and defrosting control method compared to the prior art are the same, and will not be repeated here.

[0034] The present invention also discloses a computer-readable storage medium storing a computer program, which is read and executed by a processor to implement a heating defrosting control method as described above.

[0035] Compared with the prior art, the heating defrosting control method, device, air conditioner, and readable storage medium described in this invention have the following advantages:

[0036] This invention monitors the impact of the external environment on defrosting in real time by setting a heating defrosting control mode. When the outdoor ambient temperature is low and the outdoor fan is running at a relatively fast and stable speed, it indicates that the outside natural wind is steadily blowing over the outdoor heat exchanger, carrying away a large amount of heat from the surface of the outdoor heat exchanger and severely affecting the defrosting efficiency of the air conditioner. At this time, starting the outdoor fan and controlling it to run at the same speed in reverse can effectively counteract the pressure difference caused by the natural wind, minimizing the wind speed on the surface of the outdoor heat exchanger and ensuring the defrosting efficiency of the air conditioner. The control method provided by this invention is simple and effective, effectively controlling the impact of natural wind on the defrosting of the air conditioner, ensuring defrosting efficiency, and improving the user experience. Attached Figure Description

[0037] Figure 1 This is a schematic flowchart of the heating and defrosting control method according to an embodiment of the present invention. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are only some, not all, of the embodiments of this invention. The specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0039] The following describes in detail, with reference to the accompanying drawings, a heating defrosting control method, apparatus, air conditioner, and readable storage medium according to an embodiment of the present invention.

[0040] Example 1

[0041] This embodiment provides a heating defrosting control method for an air conditioner, the air conditioner including an outdoor fan, such as... Figure 1 As shown, the control method includes:

[0042] When the air conditioner starts the defrosting mode, the outdoor fan stops running. The speed of the outdoor fan is monitored in real time. When the speed meets the first preset condition, the air conditioner enters the heating defrosting control mode and controls the operation of the outdoor fan according to the preset control method. The heating defrosting control mode is used to eliminate the negative impact of the external environment on defrosting.

[0043] In existing technology, during the defrosting operation of an air conditioner, both the indoor and outdoor fans are stopped. The connection between the indoor and outdoor heat exchangers and the four-way valve is switched, and the high-temperature, high-pressure gas generated by the compressor directly enters the outdoor heat exchanger to remove the frost. However, when the outdoor ambient temperature is low and the natural wind is strong, it blows across the surface of the outdoor heat exchanger, quickly carrying away the heat. This severely affects the defrosting effect and speed, and may result in the air conditioner switching back to heating mode before defrosting can be completed within the preset maximum defrosting time. In this case, new frost will continue to form on the unmelted frost layer, and this cycle will cause the frost layer to become thicker and thicker, seriously affecting the stability of the air conditioner's operation. In this embodiment, the defrosting status of the air conditioner is determined by monitoring the changes in the speed of the outdoor fan. If defrosting is not smooth, the heating defrosting control mode is activated. The heating defrosting control mode is used to eliminate the negative impact of the external environment on defrosting, such as the impact of low outdoor temperature and strong natural wind on defrosting efficiency. This ensures the defrosting efficiency of the air conditioner, allowing it to complete the defrosting work smoothly within the preset maximum defrosting time, preventing the frost layer from accumulating thicker and thicker in the new operating cycle, thereby ensuring the heating effect of the air conditioner and improving the user experience.

[0044] In this embodiment, the first preset condition includes: within a first preset time period, the change in the rotational speed of the external fan is less than or equal to a first preset value. In existing technology, when an air conditioner is in defrosting mode, the outdoor fan stops running. When natural wind blows, it can easily cause the outdoor fan to rotate. At this time, the reason for the rotation can be initially judged by the change in the outdoor fan speed. If it is manually turned, its speed will change drastically within a certain period of time. If it is a short-term natural wind, the change in the outdoor fan speed will be large, but since the duration is short, the impact on the defrosting of the outdoor heat exchanger is limited and can be temporarily ignored. If the natural wind blows continuously for a long time, it will cause the outdoor fan to rotate continuously at a relatively stable speed. At this time, under the combined action of natural wind and outdoor fan, the heat used for defrosting on the outdoor heat exchanger will be carried away, which will seriously affect its defrosting efficiency and defrosting speed. Therefore, when the change in the outdoor fan speed is less than or equal to the first preset value, it indicates that there is a continuous natural wind blowing on the outdoor heat exchanger. If the outdoor temperature is low at this time, it will seriously affect the defrosting of the outdoor heat exchanger. It is necessary to enter the heating defrosting control mode to eliminate the impact of natural wind on defrosting efficiency, so as to complete the defrosting work smoothly within the longest defrosting time and ensure the user experience.

[0045] As one optional example, the first preset time ranges from 3 to 7 seconds, and the first preset value ranges from 8 to 12 RPM. When the outdoor fan speed changes between 8 and 12 RPM within the 3-7 second time range, it indicates that the outdoor unit of the air conditioner is under stable natural wind blowing, and the surface of the outdoor heat exchanger is being blown by the wind, which poses a serious risk of affecting the defrosting efficiency of the air conditioner and needs to be controlled. As a preferred example, the first preset time is preferably 5 seconds, and the first preset value is preferably 10 RPM.

[0046] As one embodiment of the present invention, "controlling the operation of the external fan according to a preset control method" includes:

[0047] Detect the outdoor ambient temperature and compare it with a preset temperature threshold;

[0048] When the outdoor ambient temperature is greater than or equal to the preset temperature threshold, the outdoor fan remains in a stopped state;

[0049] When the outdoor ambient temperature is lower than the preset temperature threshold, the outdoor fan speed is continuously monitored, and the operating status of the outdoor fan is controlled according to the monitoring results.

[0050] It should be understood that when the outdoor temperature is high, even if natural wind blows across the outdoor unit of the air conditioner, causing the outdoor fan to rotate, it will only accelerate the defrosting speed of the air conditioner and will not have a negative impact on defrosting. In this case, the outdoor fan does not need to run and can remain in a stopped state to achieve high defrosting efficiency, allowing the air conditioner to complete defrosting within the preset maximum defrosting time and then switch to heating mode, thus improving the user experience. However, when the temperature is low, natural wind will carry away a large amount of heat used for defrosting, seriously affecting defrosting efficiency and speed, and impacting the user experience. Appropriate technical means need to be adopted to eliminate the negative impact of natural wind in order to ensure the user experience.

[0051] As one optional example, the preset temperature threshold ranges from 3 to 5°C. When the outdoor ambient temperature is greater than or equal to the preset temperature threshold, natural wind blowing across the outdoor heat exchanger can still achieve the corresponding defrosting effect, allowing the defrosting mode to operate smoothly. In this case, there is no need to turn on the outdoor fan, saving energy while ensuring the defrosting efficiency of the air conditioner. When the outdoor ambient temperature is less than the preset temperature threshold, it indicates that the outdoor ambient temperature is low. In this case, natural wind blowing across the outdoor heat exchanger will carry away a large amount of heat, resulting in a longer defrosting time for the air conditioner and severely reducing its defrosting efficiency. Appropriate measures need to be taken to reduce the impact of natural wind. As one preferred embodiment, the preset temperature threshold is 4°C.

[0052] As one embodiment of the present invention, "controlling the operating status of the external fan based on the external fan speed monitoring result" includes:

[0053] The monitored external fan speed V 测 With preset speed V 预 Compare;

[0054] When V 测 ≤V 预 At this time, the external fan remains stopped.

[0055] When V 测 >V 预 At this time, start the outdoor fan and control its speed V1 = -V 测 ;

[0056] Where V1 is the operating speed of the external fan after startup, V1 = -V 测 This refers to the difference between the outdoor fan speed V after startup and the monitored outdoor fan speed. 测 Rotate in opposite directions at the same speed.

[0057] It should be understood that when V 测 ≤V 预When V indicates that the outdoor fan is rotating at a low speed under the influence of natural wind, the natural wind is weak, and there is no wind blowing over the surface of the outdoor heat exchanger. This has almost no impact on the defrosting efficiency of the air conditioner, and the air conditioner can complete defrosting within the preset maximum defrosting time. At this time, it is not necessary to start the outdoor fan; maintaining the normal defrosting program is sufficient to ensure reliable defrosting. 测 >V 预 When the natural wind is strong, it indicates a significant pressure difference between the inside and outside of the outdoor unit, causing the outdoor fan to rotate at a high speed. At this time, the outdoor fan and the natural wind carry away a large amount of heat from the surface of the outdoor heat exchanger, resulting in a decrease in the defrosting efficiency of the air conditioner, preventing defrosting from completing within the preset maximum defrosting time. In this situation, the outdoor fan is started and runs at the same speed in the opposite direction of the natural wind, offsetting the pressure difference between the inside and outside of the outdoor unit caused by the natural wind. This also minimizes the wind speed at the outdoor heat exchanger, allowing defrosting to complete within the preset maximum defrosting time, ensuring the reliability of the air conditioner's defrosting process and guaranteeing the user experience. Specifically, when V... 测 ≤V 预 During this period, the outdoor fan remains stopped, and its speed is continuously monitored until the air conditioner exits defrost mode; once the outdoor fan starts, its speed is controlled to V1 = -V 测 Continue until the air conditioner exits defrost mode.

[0058] As one possible example, the preset rotational speed V 预 The value range is 80-120 RPM.

[0059] When the monitored outdoor fan speed is less than or equal to the preset speed, it indicates that the natural wind is weak, the pressure difference between the inside and outside of the outdoor unit is small, and there is no wind blowing over the surface of the outdoor heat exchanger. Natural wind has almost no impact on the defrosting of the air conditioner. In this case, keeping the outdoor fan off is sufficient, saving energy while ensuring the defrosting efficiency of the air conditioner. When the monitored outdoor fan speed is greater than the preset speed, it indicates that the natural wind is strong, the pressure difference between the inside and outside of the outdoor unit is large, and there is wind blowing over the surface of the outdoor heat exchanger, which will carry away the heat used for defrosting. In this case, turning on the outdoor fan can counteract the pressure difference of the natural wind, minimizing the wind speed at the outdoor heat exchanger and ensuring the defrosting efficiency of the air conditioner. As one preferred embodiment, the preset speed V... 预 The value is 100 RPM.

[0060] Example 2

[0061] This embodiment provides a method for controlling defrosting during heating, including the following steps:

[0062] Step S1: The air conditioner enters defrosting mode, and the indoor and outdoor fans stop running;

[0063] Step S2: Monitor the speed of the outdoor fan and determine whether the change in the speed of the outdoor fan meets the first preset condition. If yes, proceed to step S3; otherwise, proceed to step S6.

[0064] Step S3: Detect the outdoor ambient temperature and determine whether it is lower than the preset temperature threshold. If yes, proceed to step S4; otherwise, proceed to step S6.

[0065] Step S4: Determine the monitored external fan speed V 测 Is it greater than the preset speed V? 预 If yes, proceed to step S5; otherwise, proceed to step S6.

[0066] Step S5: Start the outdoor fan and control its speed V1 = -V 测 ;

[0067] Step S6: Keep the external fan stopped.

[0068] In step S6, the process returns to step S2 until the air conditioner exits the defrosting mode, thereby achieving full monitoring of the defrosting process and minimizing the impact of natural wind on defrosting efficiency.

[0069] Specifically, step S2 includes:

[0070] Step S201: Monitor the outdoor unit wind speed;

[0071] Step S202: Calculate the change in the external fan speed within the first preset time period in real time;

[0072] Step S203: Compare the change value of the external fan speed with the first preset value. If the change value is greater than the first preset value, it is determined that the first preset condition is not met, and step S6 is executed. If the change value is less than or equal to the first preset value, it is determined that the first preset condition is met, and step S3 is executed.

[0073] The above control methods can monitor the impact of natural wind on the defrosting of the air conditioner in real time, and take corresponding measures to minimize the impact of natural wind on the defrosting process, thus ensuring the defrosting efficiency of the air conditioner and guaranteeing the user experience.

[0074] It should be noted that, in the embodiments of the present invention, the first preset time, the first preset value, the preset temperature threshold, and the preset rotational speed V are... 预 The corresponding preset parameters have been preset in advance.

[0075] Example 3

[0076] This embodiment discloses a heating defrosting control device, which is used to implement a heating defrosting control method as described in Embodiment 1 or Embodiment 2.

[0077] The heating defrosting control device includes:

[0078] The outdoor fan speed monitoring module is used to monitor the speed of the outdoor fan in real time.

[0079] The calculation module is used at least for calculating the change in the external fan speed;

[0080] The judgment module is used to determine whether the speed of the external fan meets the first preset condition.

[0081] Through the collaboration between the above modules, the defrosting of the air conditioner is controlled. When the outside natural wind has a negative effect on the defrosting efficiency of the air conditioner, even if the corresponding external fan control method is adopted, the impact of the natural wind on the defrosting mode of the air conditioner is minimized, so that the defrosting of the air conditioner can be completed smoothly within the preset maximum defrosting time, ensuring the user experience.

[0082] Example 4

[0083] This embodiment discloses an air conditioner, which includes the heating and defrosting control device described in Embodiment 3.

[0084] The air conditioner disclosed in this embodiment includes a computer-readable storage medium storing a computer program and a processor. The computer program is read and executed by the processor to implement a heating defrosting control method as described in Embodiment 1 or Embodiment 2.

[0085] The air conditioner described herein has the same advantages over the prior art as the heating and defrosting control method described in Embodiment 1 or Embodiment 2, and will not be repeated here.

[0086] Example 5

[0087] This embodiment discloses a computer-readable storage medium storing a computer program, which is read and executed by a processor to implement a heating defrosting control method as described in Embodiment 1 or Embodiment 2.

[0088] While the present invention has been disclosed above, it is not limited thereto. In the description of this specification, references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A heating defrosting control method for an air conditioner, the air conditioner including an outdoor fan, characterized in that, The control method includes: When the air conditioner starts the defrosting mode, the outdoor fan stops running. The speed of the outdoor fan is monitored in real time. When the speed meets the first preset condition, the air conditioner enters the heating defrosting control mode and controls the operation of the outdoor fan according to the preset control method. The heating defrosting control mode is used to eliminate the negative impact of the external environment on defrosting. The first preset condition includes: within a first preset time period, the change in the rotational speed of the external fan is less than or equal to a first preset value; "Controlling the operation of the external fan according to the preset control method" includes: Detect the outdoor ambient temperature and compare it with a preset temperature threshold; When the outdoor ambient temperature is greater than or equal to the preset temperature threshold, the outdoor fan remains in a stopped state; When the outdoor ambient temperature is lower than the preset temperature threshold, the outdoor fan speed is continuously monitored, and the operating status of the outdoor fan is controlled according to the monitoring results. "Controlling the operating status of the external fan based on the monitoring results of the external fan speed" includes: The monitored external fan speed V 测 With preset speed V 预 Compare; When V 测 ≤V 预 At this time, the external fan remains stopped. When V 测 >V 预 At this time, start the outdoor fan and control its speed V1 = -V 测 ; Where V1 is the operating speed of the external fan after startup, V1 = -V 测 This refers to the difference between the outdoor fan speed V after startup and the monitored outdoor fan speed. 测 Rotate in opposite directions at the same speed.

2. The heating defrosting control method as described in claim 1, characterized in that, The first preset time ranges from 3 to 7 seconds, and the first preset value ranges from 8 to 12 RPM.

3. The heating defrosting control method as described in claim 1, characterized in that, The preset temperature threshold value ranges from 3 to 5℃.

4. The heating defrosting control method as described in claim 1, characterized in that, The preset rotational speed V 预 The value range is 80-120 RPM.

5. A heating defrosting control device, used to execute a heating defrosting control method as described in any one of claims 1-4, characterized in that, include: The outdoor fan speed monitoring module is used to monitor the speed of the outdoor fan in real time. The calculation module is used at least for calculating the change in the external fan speed; The judgment module is used to determine whether the speed of the external fan meets the first preset condition.

6. An air conditioner, characterized in that, The method includes a computer-readable storage medium storing a computer program and a processor, wherein the computer program is read and executed by the processor to implement a heating defrosting control method as described in any one of claims 1-4.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, which is read and executed by a processor to implement a heating defrosting control method as described in any one of claims 1-4.

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