A control method of an air conditioner and an air conditioner

Abstract

The application provides a control method of an air conditioner and the air conditioner, and the control method of the air conditioner comprises the following steps: starting the air conditioner for heating; controlling the air conditioner to run for a first time length, and obtaining a first inner disc temperature and a first outer disc temperature after the first time length; when the air conditioner is in a defrosting working condition, obtaining a second outer disc temperature in real time, and controlling the air conditioner to exit defrosting according to the size relationship between the second outer disc temperature and an outer disc temperature threshold; controlling the air conditioner to run for the first time length, and obtaining a third inner disc temperature and a third outer disc temperature after the first time length; and correcting the outer disc temperature threshold according to the third inner disc temperature, the third outer disc temperature, the first inner disc temperature and the first outer disc temperature. The application solves the technical problem of incomplete defrosting of the air conditioner in the related art.

Description

Technical Field

[0001] This invention relates to the field of air conditioner technology, and more specifically, to an air conditioner control method and an air conditioner. Background Technology

[0002] With the improvement of people's living standards, air conditioners have become an indispensable household appliance for every family. After an air conditioner has been running continuously in heating mode for a period of time, frost will form on the outdoor heat exchanger. The frost layer will prevent heat transfer, and the heating performance of the air conditioner will decrease, affecting its performance. Therefore, when the frost layer on the outdoor heat exchanger reaches a certain thickness, it needs to be defrosted.

[0003] However, most air conditioners currently suffer from incomplete defrosting during heating, leaving residual frost and ice water on the condenser, resulting in poor heating performance during secondary heating. As air conditioners operate in heating mode for extended periods, the frost on the outdoor unit thickens, affecting comfort and the lifespan of the air conditioner. Summary of the Invention

[0004] To address the technical problem of incomplete defrosting in air conditioners, this invention provides a control method for an air conditioner. The control method includes: turning on the air conditioner for heating; controlling the air conditioner to operate in heating mode for a first duration, and acquiring a first inner plate temperature and a first outer plate temperature after the first duration; when the air conditioner is in defrosting mode, acquiring a second outer plate temperature in real time, and controlling the air conditioner to exit defrosting mode based on the relationship between the second outer plate temperature and an outer plate temperature threshold; controlling the air conditioner to operate in heating mode for the first duration, and acquiring a third inner plate temperature and a third outer plate temperature after the first duration; and correcting the outer plate temperature threshold based on the third inner plate temperature, the third outer plate temperature, the first inner plate temperature, and the first outer plate temperature.

[0005] Compared with existing technologies, the technical effects achieved by this solution are as follows: By acquiring the first inner and outer wall temperatures after the first heating cycle of the air conditioner, and the third inner and outer wall temperatures after the first defrosting cycle ends, the system can determine whether the first defrosting operation was thorough and whether there is residual frost on the condenser side based on the first inner wall temperature, the first outer wall temperature, the third inner wall temperature, and the third outer wall temperature. This allows for the adjustment of the outer wall temperature threshold for the next defrosting cycle based on the actual defrosting results of the first operation, ensuring that the next defrosting cycle can completely remove residual frost from the condenser side. This prevents incomplete defrosting from causing increasingly thick frost on the outdoor heat exchanger, which would affect user comfort and the lifespan of the air conditioner.

[0006] In one embodiment of the present invention, the step of correcting the outer disk temperature threshold based on the third inner disk temperature, the third outer disk temperature, the first inner disk temperature, and the first outer disk temperature includes: correcting the outer disk temperature threshold based on the difference between the first inner disk temperature and the third inner disk temperature, and the difference between the first outer disk temperature and the third outer disk temperature.

[0007] Compared with existing technologies, the technical effects achieved by this technical solution are as follows: by calculating the temperature difference between the first inner plate temperature and the third inner plate temperature, and the temperature difference between the first outer plate temperature and the third inner plate temperature, it is possible to determine whether the air conditioner has defrosted thoroughly during its first defrosting operation, and whether there is residual frost and ice water on the condenser.

[0008] In one embodiment of the present invention, the step of correcting the outer disk temperature threshold based on the difference between the first inner disk temperature and the third inner disk temperature, and the difference between the first outer disk temperature and the third outer disk temperature, includes: if T wp1 -T wp3 ≥T1 and T np1 -T np3 If T ≥ T2, then T wp阈1 =T wp阈0 +n; where T wp1 The first outer plate temperature; T wp3 The temperature of the third outer disk; T np1 The temperature of the first inner plate; T np3 The temperature of the third inner plate; T wp阈0 The outer disk temperature threshold; T wp阈1 The corrected outer disk temperature threshold is n, where n is the correction value; n > 0.

[0009] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: If T wp1 -T wp3 ≥T1 and T np1 -T np3 If the value is ≥T2, it indicates that the defrosting was incomplete during the first defrosting run of the air conditioner, and there is residual frost and ice water on the condenser. Therefore, the outdoor coil temperature threshold is adjusted by increasing the outdoor coil temperature threshold to raise the outdoor coil temperature at the end of defrosting, extend the defrosting time, and make the defrosting more thorough.

[0010] In one embodiment of the present invention, the control method of the air conditioner further includes: if T is not satisfied... wp1 -T wp3 ≥T1 and T np1 -T np3 If the value is ≥T2, then there is no need to correct the outer disk temperature threshold.

[0011] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: if T is not satisfied... wp1 -T wp3 ≥T1 and T np1 -T np3 If ≥T2, it means that the defrosting was thorough during the first defrosting run of the air conditioner, and there was no residual frost or ice water on the condenser. Therefore, there is no need to adjust the external plate temperature threshold.

[0012] In one embodiment of the present invention, controlling the air conditioner to exit defrost mode based on the relationship between the second outer disk temperature and the outer disk temperature threshold includes: if T wp2 ≥T wp阈0 Then, the air conditioner will stop defrosting and continue heating operation; among which, T wp2 The temperature of the second outer plate; T wp阈0 This is the outer disk temperature threshold.

[0013] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: If T wp2 ≥T wp阈0 If the current temperature of the second outer coil is greater than or equal to the outer coil temperature threshold, the current outdoor coil temperature is relatively high, and the frost on the outdoor heat exchanger has been completely removed. Therefore, the air conditioner is controlled to stop defrosting and continue heating operation.

[0014] In one embodiment of the present invention, controlling the air conditioner to exit defrost mode based on the relationship between the second outer disk temperature and the outer disk temperature threshold further includes: if T wp2 <T wp阈0 Then the air conditioner will continue defrosting until T wp2 ≥T wp阈0 The system will stop defrosting and resume heating operation.

[0015] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: If T wp2 <T wp阈0 This indicates that the current temperature of the second outdoor coil is lower than the outdoor coil temperature threshold, the current outdoor coil temperature is relatively low, the frost on the outdoor heat exchanger has not been completely removed, and there is residual frost and ice water on the condenser. Therefore, the air conditioner is controlled to continue defrosting until T. wp2 ≥T wp阈0 Then, control the air conditioner to stop defrosting and switch to heating operation.

[0016] In one embodiment of the present invention, after correcting the outer disk temperature threshold based on the difference between the first inner disk temperature and the third inner disk temperature, and the difference between the first outer disk temperature and the third outer disk temperature, the control method of the air conditioner further includes: when the air conditioner is in defrosting mode, acquiring the fourth outer disk temperature in real time, and controlling the air conditioner to exit defrosting mode based on the relationship between the fourth outer disk temperature and the corrected outer disk temperature threshold.

[0017] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: by acquiring the fourth outer plate temperature in real time and controlling the air conditioner to defrost based on the fourth outer plate temperature and the corrected outer plate temperature threshold, it is possible to more accurately determine whether the outdoor heat exchanger has been defrosted thoroughly and whether there is residual frost and ice water on the outdoor heat exchanger based on the actual defrosting situation during the first defrosting operation and the corrected outer plate temperature threshold.

[0018] In one embodiment of the present invention, controlling the air conditioner to exit defrost mode based on the relationship between the fourth outer disk temperature and the corrected outer disk temperature threshold includes: if T wp4 ≥T wp阈1 If T wp4 <T wp阈1 Then, the air conditioner will continue defrosting; among them, T wp4 The fourth outer disk temperature; T wp阈1 This is the corrected outer disk temperature threshold.

[0019] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: If T wp4 ≥T wp阈1 This indicates that the air conditioner has completely defrosted during this defrosting operation, and there is no residual frost or ice water on the condenser. Therefore, the air conditioner is controlled to end defrosting and continue heating operation. If T wp4 <T wp阈1 If the defrost is not complete during this defrosting operation, there is residual frost and ice water on the condenser. Therefore, the air conditioner is controlled to continue defrosting until the frost on the outdoor heat exchanger is completely removed, and then the defrosting operation is switched to heating operation.

[0020] This invention provides an air conditioner that implements the control method for an air conditioner as described in any of the preceding embodiments. The air conditioner includes: a first control module for controlling the air conditioner to start heating; a first acquisition module for controlling the air conditioner to operate in heating mode for a first duration and acquiring a first inner plate temperature and a first outer plate temperature after the first duration; a second control module for acquiring a second outer plate temperature in real time when the air conditioner is in defrosting mode and controlling the air conditioner to exit defrosting mode according to the relationship between the second outer plate temperature and an outer plate temperature threshold; a second acquisition module for controlling the air conditioner to operate in heating mode for the first duration and acquiring a third inner plate temperature and a third outer plate temperature after the first duration; and a correction module for correcting the outer plate temperature threshold according to the third inner plate temperature, the third outer plate temperature, the first inner plate temperature, and the first outer plate temperature.

[0021] This invention provides an air conditioner comprising: a computer-readable storage medium storing a computer program and a packaged IC, wherein the computer program is read and executed by the packaged IC, and the air conditioner performs the control method of the air conditioner as described in any of the preceding embodiments.

[0022] By adopting the technical solution of the present invention, the following technical effects can be achieved:

[0023] (1) By obtaining the first inner and outer wall temperatures after the first heating cycle of the air conditioner, and the third inner and outer wall temperatures after the first defrosting cycle of the air conditioner ends, the first inner and outer wall temperatures can be obtained based on the first inner wall temperature, the first outer wall temperature, the third inner wall temperature and the third outer wall temperature. It is possible to determine whether the first defrosting operation of the air conditioner is thorough and whether there is residual frost on the condenser side based on the first inner wall temperature, the first outer wall temperature, the third inner wall temperature and the third outer wall temperature. Thus, the outer wall temperature threshold of the next defrosting cycle can be corrected based on the actual defrosting situation of the first defrosting operation, so as to ensure that the defrosting operation of the next cycle can completely remove the residual frost on the condenser side and avoid the frost on the outdoor heat exchanger becoming thicker and thicker due to incomplete defrosting, which affects user comfort and the service life of the air conditioner.

[0024] (2) By calculating the temperature difference between the first inner plate temperature and the third inner plate temperature, and the temperature difference between the first outer plate temperature and the third outer plate temperature, it is possible to determine whether the air conditioner defrosts completely during its first defrosting operation and whether there is residual frost and ice water on the condenser.

[0025] (3) If T wp1 -T wp3 ≥0 and T np1 -T np3If the value is ≥0, it indicates that the defrosting was incomplete during the first defrosting run of the air conditioner, and there is residual frost and ice water on the condenser. Therefore, the outdoor coil temperature threshold is adjusted by increasing the outdoor coil temperature threshold to raise the outdoor coil temperature at the end of defrosting, extend the defrosting time, and make the defrosting more thorough. Attached Figure Description

[0026] Figure 1 This is a flowchart illustrating a control method for an air conditioner provided in an embodiment of the present invention.

[0027] Figure 2 This is a schematic diagram of an air conditioner module provided in an embodiment of the present invention. Detailed Implementation

[0028] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] See Figure 1 This is a flowchart illustrating a control method for an air conditioner provided by an embodiment of the present invention. The control method includes, for example, the following steps: turning on the air conditioner for heating; controlling the air conditioner to operate in heating mode for a first duration, and acquiring the first inner and outer panel temperatures after the first duration; when the air conditioner is in defrosting mode, acquiring the second outer panel temperature in real time, and controlling the air conditioner to exit defrosting mode based on the relationship between the second outer panel temperature and an outer panel temperature threshold; controlling the air conditioner to operate in heating mode for the first duration, and acquiring the third inner and third outer panel temperatures after the first duration; correcting the outer panel temperature threshold based on the third inner panel temperature, the third outer panel temperature, the first inner panel temperature, and the first outer panel temperature. The outer panel temperature threshold ranges from 0-60℃, with a preferred value of 15℃. The preferred first duration is 15 minutes.

[0030] Understandably, by acquiring the first inner and outer wall temperatures after the air conditioner has been running in heating mode for the first time, and the third inner and outer wall temperatures after the air conditioner has exited defrosting mode for the first time after the first defrosting operation, it is possible to determine whether the first defrosting operation was thorough and whether there is residual frost on the condenser side based on the first inner wall temperature, the first outer wall temperature, the third inner wall temperature, and the third outer wall temperature. This allows for the adjustment of the outer wall temperature threshold for the next defrosting cycle based on the actual defrosting situation of the first defrosting operation, ensuring that the next defrosting operation can thoroughly remove residual frost on the condenser side and avoid incomplete defrosting leading to increasingly thick frost on the outdoor heat exchanger, which affects user comfort and the service life of the air conditioner.

[0031] Furthermore, the step of correcting the outer disk temperature threshold based on the third inner disk temperature, the third outer disk temperature, the first inner disk temperature, and the first outer disk temperature includes: correcting the outer disk temperature threshold based on the difference between the first inner disk temperature and the third inner disk temperature, and the difference between the first outer disk temperature and the third outer disk temperature.

[0032] Understandably, by calculating the temperature difference between the first inner plate temperature and the third inner plate temperature, as well as the temperature difference between the first outer plate temperature and the third inner plate temperature, it is possible to determine whether the air conditioner has defrosted thoroughly during its first defrosting run, and whether there is residual frost and ice water on the condenser.

[0033] Furthermore, the step of correcting the outer disk temperature threshold based on the difference between the first inner disk temperature and the third inner disk temperature, and the difference between the first outer disk temperature and the third outer disk temperature, includes: if T wp1 -T wp3 ≥T1 and T np1 -T np3 If T ≥ T2, then T wp阈1 =T wp阈0 +n; where T wp1 The first outer plate temperature; T wp3 The temperature of the third outer disk; T np1 The temperature of the first inner plate; T np3 The temperature of the third inner plate; T wp阈0 The outer disk temperature threshold; T wp阈1 The corrected outer plate temperature threshold is denoted by n, where n is the correction value; n > 0. The value range of T1 is -25℃ to 60℃; the preferred value of T1 is 0℃. The value range of T2 is -25℃ to 30℃; the preferred value of T2 is 0℃.

[0034] In one specific embodiment, when the air conditioner is turned on and operates in heating mode for 15 minutes, the first outer plate temperature and the first inner plate temperature are obtained. For example, the first inner plate temperature is 50°C and the first outer plate temperature is 5°C. When the air conditioner reaches the defrosting condition, it enters the defrosting process. During the defrosting process, the second outer plate temperature is obtained in real time. If the second outer plate temperature is 10°C, which is lower than the outer plate temperature threshold of 15°C, the air conditioner is controlled to continue defrosting while the outer plate temperature is continuously monitored.

[0035] If the second outer plate temperature is 15℃, the air conditioner will stop defrosting and enter heating mode. After the air conditioner has been running in heating mode for 15 minutes, the third outer plate temperature and the third inner plate temperature will be obtained. If the third inner plate temperature is 52℃ and the third outer plate temperature is 7℃, it indicates that T... wp1 -T wp3 <0 and Tnp1 -T np3 <0, therefore the air conditioner is controlled to continue heating operation and return to the initial heating mode.

[0036] It is understandable that if T wp1 -T wp3 ≥T1 and T np1 -T np3 If the value is ≥T2, it indicates that the defrosting was incomplete during the first defrosting run of the air conditioner, and there is residual frost and ice water on the condenser. Therefore, the outdoor coil temperature threshold is adjusted by increasing the outdoor coil temperature threshold to raise the outdoor coil temperature at the end of defrosting, extend the defrosting time, and make the defrosting more thorough.

[0037] Furthermore, the control method for the air conditioner also includes: if T is not satisfied... wp1 -T wp3 ≥T1 and T np1 -T np3 If the value is ≥T2, then there is no need to correct the outer disk temperature threshold.

[0038] It is understandable that if T is not satisfied... wp1 -T wp3 ≥T1 and T np1 -T np3 If ≥T2, it means that the defrosting was thorough during the first defrosting run of the air conditioner, and there was no residual frost or ice water on the condenser. Therefore, there is no need to adjust the external plate temperature threshold.

[0039] Furthermore, controlling the air conditioner to exit defrost mode based on the relationship between the second outer disk temperature and the outer disk temperature threshold includes: if T wp2 ≥T wp阈0 Then, the air conditioner will stop defrosting and continue heating operation; among which, T wp2 The temperature of the second outer plate; T wp阈0 This is the outer disk temperature threshold.

[0040] It is understandable that if T wp2 ≥T wp阈0 If the current temperature of the second outer coil is greater than or equal to the outer coil temperature threshold, the current outdoor coil temperature is relatively high, and the frost on the outdoor heat exchanger has been completely removed. Therefore, the air conditioner is controlled to stop defrosting and continue heating operation.

[0041] Furthermore, the step of controlling the air conditioner to exit defrost mode based on the relationship between the second outer disk temperature and the outer disk temperature threshold also includes: if T wp2 <T wp阈0 Then the air conditioner will continue defrosting until T wp2 ≥T wp阈0 The system will stop defrosting and resume heating operation.

[0042] It is understandable that if T wp2 <T wp阈0 This indicates that the current temperature of the second outdoor coil is lower than the outdoor coil temperature threshold, the current outdoor coil temperature is relatively low, the frost on the outdoor heat exchanger has not been completely removed, and there is residual frost and ice water on the condenser. Therefore, the air conditioner is controlled to continue defrosting until T. wp2 ≥T wp阈0 Then, control the air conditioner to stop defrosting and switch to heating operation.

[0043] Furthermore, after correcting the outer disk temperature threshold based on the difference between the first inner disk temperature and the third inner disk temperature, and the difference between the first outer disk temperature and the third outer disk temperature, the control method of the air conditioner further includes: when the air conditioner is in defrosting mode, acquiring the fourth outer disk temperature in real time, and controlling the air conditioner to exit defrosting mode based on the relationship between the fourth outer disk temperature and the corrected outer disk temperature threshold.

[0044] Understandably, by acquiring the fourth external circuit temperature in real time and controlling the air conditioner to defrost based on the fourth external circuit temperature and the corrected external circuit temperature threshold, it is possible to more accurately determine whether the outdoor heat exchanger has defrosted completely and whether there is residual frost and ice water on the outdoor heat exchanger, based on the actual defrosting situation during the first defrosting operation and the corrected external circuit temperature threshold.

[0045] Furthermore, controlling the air conditioner to exit defrost mode based on the relationship between the fourth outer disk temperature and the corrected outer disk temperature threshold includes: if T wp4 ≥T wp阈1 If T wp4 <T wp阈1 Then, the air conditioner will continue defrosting; among them, T wp4 The fourth outer disk temperature; T wp阈1 This is the corrected outer disk temperature threshold.

[0046] It is understandable that if T wp4 ≥T wp阈1 This indicates that the air conditioner has completely defrosted during this defrosting operation, and there is no residual frost or ice water on the condenser. Therefore, the air conditioner is controlled to end defrosting and continue heating operation. If T wp4 <T wp阈1 If the defrost is not complete during this defrosting operation, there is residual frost and ice water on the condenser. Therefore, the air conditioner is controlled to continue defrosting until the frost on the outdoor heat exchanger is completely removed, and then the defrosting operation is switched to heating operation.

[0047] Furthermore, this invention provides an air conditioner that implements the control method for air conditioners as described in any of the preceding embodiments. In conjunction with... Figure 2The air conditioner 200 includes, for example, a first control module 210, a first acquisition module 220, a second control module 230, a second acquisition module 240, and a correction module 250. Specifically, the first control module 210 controls the air conditioner to start heating; the first acquisition module 220 controls the air conditioner to operate in heating mode for a first duration and acquires the first inner and outer plate temperatures after the first duration; the second control module 230 acquires the second outer plate temperature in real time when the air conditioner is in defrosting mode and controls the air conditioner to exit defrosting mode based on the relationship between the second outer plate temperature and an outer plate temperature threshold; the second acquisition module 240 controls the air conditioner to operate in heating mode for the first duration and acquires the third inner and third outer plate temperatures after the first duration; and the correction module 250 corrects the outer plate temperature threshold based on the third inner plate temperature, the third outer plate temperature, the first inner plate temperature, and the first outer plate temperature.

[0048] In one specific embodiment, the first control module 210, the first acquisition module 220, the second control module 230, the second acquisition module 240, and the correction module 250 cooperate with each other to implement the control method of the air conditioner as described in any of the previous examples, and can achieve the same effect. To avoid repetition, it will not be described again here.

[0049] Furthermore, this invention provides an air conditioner comprising: a computer-readable storage medium storing a computer program and a packaged IC. When the computer program is read and executed by the packaged IC, the air conditioner performs the control method of the air conditioner as described in any of the preceding embodiments and achieves the same effect. To avoid repetition, further details are omitted here.

[0050] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A control method for an air conditioner, characterized in that, The control method for the air conditioner includes: The air conditioner is turned on for heating. Control the air conditioner to operate in heating mode for a first duration, and obtain the first inner panel temperature and the first outer panel temperature after the first duration; When the air conditioner is in defrosting mode, the second external circuit temperature is acquired in real time, and the air conditioner is controlled to exit defrosting mode based on the relationship between the second external circuit temperature and the external circuit temperature threshold. Control the air conditioner to operate in heating mode for the first duration, and obtain the temperature of the third inner panel and the temperature of the third outer panel after the first duration; The outer disk temperature threshold is corrected based on the difference between the temperature of the first inner disk and the temperature of the third inner disk, and the difference between the temperature of the first outer disk and the temperature of the third outer disk.

2. The control method for an air conditioner according to claim 1, characterized in that, The step of correcting the outer disk temperature threshold based on the difference between the first inner disk temperature and the third inner disk temperature, and the difference between the first outer disk temperature and the third outer disk temperature, includes: If T wp1 -T wp3 ≥T1 and T np1 -T np3 If T ≥ T2, then T wp阈1 =T wp阈0 +n; Among them, T wp1 The first outer plate temperature; T wp3 The temperature of the third outer disk; T np1 The temperature of the first inner plate; T np3 The temperature of the third inner plate; T wp阈0 The outer disk temperature threshold; T wp阈1 The corrected outer disk temperature threshold is n, where n is the correction value; n > 0.

3. The control method for an air conditioner according to claim 1, characterized in that, The control method for the air conditioner also includes: If T is not satisfied wp1 -T wp3 ≥T1 and T np1 -T np3 If the value is ≥T2, then there is no need to correct the outer disk temperature threshold.

4. The control method for an air conditioner according to claim 1, characterized in that, The step of controlling the air conditioner to exit defrost mode based on the relationship between the second outer disk temperature and the outer disk temperature threshold includes: If T wp2 ≥T wp阈0 If the defrosting is stopped, the air conditioner will resume heating operation. Among them, T wp2 The temperature of the second outer plate; T wp阈0 This is the outer disk temperature threshold.

5. The control method for an air conditioner according to claim 1, characterized in that, The step of controlling the air conditioner to exit defrost based on the relationship between the second outer disk temperature and the outer disk temperature threshold also includes: If T wp2 <T wp阈0 Then the air conditioner will continue defrosting until T wp2 ≥T wp阈0 The system will stop defrosting and resume heating operation.

6. The control method for an air conditioner according to claim 2, characterized in that, After correcting the outer disk temperature threshold based on the difference between the first inner disk temperature and the third inner disk temperature, and the difference between the first outer disk temperature and the third outer disk temperature, the control method of the air conditioner further includes: When the air conditioner is in defrosting mode, the fourth outer plate temperature is acquired in real time, and the air conditioner is controlled to exit defrosting mode based on the relationship between the fourth outer plate temperature and the corrected outer plate temperature threshold.

7. The control method for an air conditioner according to claim 6, characterized in that, The step of controlling the air conditioner to exit defrost mode based on the relationship between the fourth outer disk temperature and the corrected outer disk temperature threshold includes: If T wp4 ≥T wp阈1 If the defrosting is stopped, the air conditioner will resume heating operation. If T wp4 <T wp阈1 Then the air conditioner will continue to defrost. Among them, T wp4 The fourth outer disk temperature; T wp阈1 This is the corrected outer disk temperature threshold.

8. An air conditioner, characterized in that, The air conditioner implements the control method for an air conditioner as described in any one of claims 1-7, and the air conditioner includes: The first control module is used to control the air conditioner to start heating mode. The first acquisition module is used to control the air conditioner to operate in heating mode for a first duration, and to acquire the first inner plate temperature and the first outer plate temperature after the first duration. The second control module is used to acquire the second external plate temperature in real time when the air conditioner is in defrosting mode, and control the air conditioner to exit defrosting according to the relationship between the second external plate temperature and the external plate temperature threshold. The second acquisition module is used to control the air conditioner to operate in heating mode for the first duration, and to acquire the temperature of the third inner plate and the temperature of the third outer plate after the first duration. The correction module is used to correct the outer disk temperature threshold based on the difference between the first inner disk temperature and the third inner disk temperature, and the difference between the first outer disk temperature and the third outer disk temperature.

9. An air conditioner, characterized in that, The air conditioner includes: a computer-readable storage medium storing a computer program and a packaged IC, wherein the computer program is read and executed by the packaged IC, and the air conditioner performs the control method of the air conditioner as described in any one of claims 1-7.

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