Air conditioner defrosting control method and device, air conditioner and storage medium

Abstract

The present disclosure relates to the field of air conditioner control, and particularly relates to an air conditioner defrosting control method and device, an air conditioner and a storage medium. The method comprises: in the heating mode of the air conditioner, monitoring a temperature parameter related to the operation of the air conditioner, wherein the temperature parameter comprises an outdoor environment temperature, an indoor environment temperature and an outdoor heat exchanger tube temperature; controlling air conditioner defrosting according to the temperature parameter and an air conditioner defrosting start condition; determining a defrosting duration of each defrosting operation of the air conditioner in the current heating mode; and controlling to reduce the outdoor heat exchanger tube temperature threshold used in the air conditioner defrosting start condition according to the defrosting duration. In this way, the frost layer on the outdoor heat exchanger can be effectively reduced or melted, and the influence on the operation effect of the subsequent heating period is avoided. If it is determined that the previous defrosting operation can not be performed, the outdoor heat exchanger tube temperature threshold is reduced, so that the defrosting start condition of the air conditioner is more stringent in the subsequent process, the frequent start and stop of the air conditioner compressor is avoided, and the service life of the air conditioner is prolonged.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of air conditioner control, and particularly relates to an air conditioner defrosting control method and device, an air conditioner and a storage medium. BACKGROUND

[0002] When the air conditioner is in heating operation, under certain humidity conditions, if the outdoor coil temperature is too low, frost will occur, and the frost on the outdoor coil will reduce the heat exchange efficiency of the outdoor heat exchanger, affecting the subsequent period of heating operation effect and user experience. SUMMARY

[0003] To overcome the problems in the related art, the present disclosure provides an air conditioner defrosting control method and device, an air conditioner and a storage medium.

[0004] According to a first aspect of the embodiments of the present disclosure, an air conditioner defrosting control method is provided, comprising:

[0005] In the air conditioner heating mode, a temperature parameter related to the operation of the air conditioner is monitored, wherein the temperature parameter includes an outdoor environment temperature, an indoor environment temperature and an outdoor heat exchanger tube temperature;

[0006] According to the temperature parameter and an air conditioner defrosting opening condition, the air conditioner defrosting is controlled.

[0007] The defrosting duration of each defrosting operation of the air conditioner in the current heating mode is determined.

[0008] According to the defrosting duration, the outdoor heat exchanger tube temperature threshold used in the air conditioner defrosting opening condition is controlled to be reduced.

[0009] Optionally,

[0010] According to the defrosting duration, the outdoor heat exchanger tube temperature threshold used in the air conditioner defrosting opening condition is controlled to be reduced.

[0011] If the number of continuous defrosting operations of the air conditioner in the current heating mode, whose defrosting duration is less than a defrosting duration threshold, is less than a first number threshold, the outdoor heat exchanger tube temperature threshold used in the air conditioner defrosting opening condition is controlled to be reduced.

[0012] Optionally, according to the temperature parameter and the air conditioner defrosting opening condition, the air conditioner defrosting is controlled, comprising:

[0013] If the indoor environment temperature reaches an indoor target temperature threshold, the compressor of the air conditioner is controlled to be stopped and the heating operation duration of the compressor in the current heating is determined, wherein the indoor target temperature threshold is the sum of the current air conditioner set temperature and a temperature correction value, and the heating in the process from the start of the compressor to the stop of the compressor is one compressor heating.

[0014] in response to determining that the temperature parameter and the heating operation duration satisfy the air conditioner defrosting opening condition, allowing the defrosting operation to be performed in the current air conditioner defrosting and the compressor shutdown duration reaching the delay duration threshold, controlling the air conditioner defrosting.

[0015] Optionally, before the compressor shutdown duration reaches the delay duration threshold, the method further comprises:

[0016] If it is determined that the difference between the indoor environment temperature and the set temperature is less than or equal to a temperature difference threshold, a first defrosting prohibition instruction is generated, wherein the first defrosting prohibition instruction is used to instruct the air conditioner not to allow the defrosting operation to be performed in the current and M times of defrosting after the current defrosting, M is a second number threshold, and the temperature difference threshold is less than the temperature correction value.

[0017] Optionally, the method further comprises:

[0018] In the M+1th defrosting after the current defrosting, if it is determined that the difference between the indoor environment temperature and the set temperature is greater than the temperature difference threshold before the shutdown duration reaches the delay duration threshold, it is determined that the air conditioner allows the defrosting operation to be performed in the M+1th defrosting.

[0019] In the M+1th defrosting after the current defrosting, if it is determined that the difference between the indoor environment temperature and the set temperature is less than or equal to the temperature difference threshold before the shutdown duration reaches the delay duration threshold, a second defrosting prohibition instruction is generated, and the second defrosting prohibition instruction is used to instruct the air conditioner not to allow the defrosting operation to be performed in the defrosting before the heating mode is exited.

[0020] Optionally, the air conditioner defrosting opening condition comprises a first condition and a second condition:

[0021] The first condition is that the outdoor environment temperature is less than a first outdoor environment temperature threshold and greater than a second outdoor environment temperature threshold, the indoor environment temperature is greater than a first indoor environment temperature threshold, the heating operation duration is greater than a first duration, and the outdoor heat exchanger pipe temperature is less than a first outdoor heat exchanger pipe temperature threshold.

[0022] The second condition is that the outdoor environment temperature is less than or equal to the second outdoor environment temperature threshold, the indoor environment temperature is greater than a second indoor environment temperature threshold, the heating operation duration is greater than a second duration, and the outdoor heat exchanger pipe temperature is less than a second outdoor heat exchanger pipe temperature threshold.

[0023] In a case where the air conditioner defrosting opening condition includes a first condition and a second condition, the air conditioner defrosting opening condition is determined to be met when any one of the first condition and the second condition is met, the first indoor environment temperature threshold is less than the second indoor environment temperature threshold, the first time length is less than the second time length, and the first outdoor heat exchanger pipe temperature threshold is greater than the second outdoor heat exchanger pipe temperature threshold.

[0024] Optionally, the control includes reducing an outdoor heat exchanger pipe temperature threshold used in the air conditioner defrosting opening condition.

[0025] The first outdoor heat exchanger pipe temperature threshold and the second outdoor heat exchanger pipe temperature threshold are controlled to be reduced, and the reduced first outdoor heat exchanger pipe temperature threshold is greater than the reduced second outdoor heat exchanger pipe temperature threshold.

[0026] Optionally, the method further includes:

[0027] In response to receiving an air conditioner shutdown instruction, the air conditioner defrosting opening condition is initialized.

[0028] According to a second aspect of the embodiments of the present disclosure, an air conditioner defrosting control device is provided, including:

[0029] A monitoring module is configured to monitor temperature parameters related to operation of the air conditioner in a heating mode of the air conditioner, wherein the temperature parameters include an outdoor environment temperature, an indoor environment temperature, and an outdoor heat exchanger pipe temperature.

[0030] A first control module is configured to control defrosting of the air conditioner according to the temperature parameters and an air conditioner defrosting opening condition.

[0031] A first determination module is configured to determine a defrosting time length of each defrosting operation performed by the air conditioner in a current heating mode.

[0032] A second control module is configured to control reduction of an outdoor heat exchanger pipe temperature threshold used in the air conditioner defrosting opening condition according to the defrosting time length.

[0033] Optionally, the second control module is configured to control reduction of the outdoor heat exchanger pipe temperature threshold used in the air conditioner defrosting opening condition according to the defrosting time length in the following manner:

[0034] If a continuous number of defrosting operations performed by the air conditioner in the current heating mode, in which a defrosting time length is less than a defrosting time length threshold, is less than a first number threshold, the outdoor heat exchanger pipe temperature threshold used in the air conditioner defrosting opening condition is controlled to be reduced.

[0035] Optionally, the first control module includes:

[0036] The first control submodule is configured to control the compressor of the air conditioner to stop running and determine a heating operation duration of the compressor for this time of heating if the indoor environment temperature reaches an indoor target temperature threshold value, wherein the indoor target temperature threshold value is a sum of a set temperature of the current air conditioner and a temperature correction value, and the heating in a process from the start of the compressor to the stop of the compressor is one time of compressor heating.

[0037] The second control submodule is configured to control the air conditioner to perform defrosting operation in this time of defrosting and the stop duration of the compressor reaches a delay duration threshold value, in response to determining that the temperature parameter and the heating operation duration satisfy the air conditioner defrosting start condition.

[0038] Optionally, the first control module further comprises:

[0039] The first instruction generation submodule is configured to generate a first defrosting prohibition instruction if it is determined that the difference between the indoor environment temperature and the set temperature is less than or equal to a temperature difference threshold value, wherein the first defrosting prohibition instruction is used to instruct the air conditioner to not perform defrosting operation in this time of defrosting and M times of defrosting after this time of defrosting, M is a second number threshold value, and the temperature difference threshold value is less than the temperature correction value.

[0040] Optionally, the first control module further comprises:

[0041] The determination submodule is configured to determine that the air conditioner is allowed to perform the defrosting operation in the M+1th time of defrosting after this time of defrosting if it is determined that the difference between the indoor environment temperature and the set temperature is greater than the temperature difference threshold value before the stop duration reaches the delay duration threshold value.

[0042] The second instruction generation submodule is configured to generate a second defrosting prohibition instruction if it is determined that the difference between the indoor environment temperature and the set temperature is less than or equal to the temperature difference threshold value before the stop duration reaches the delay duration threshold value in the M+1th time of defrosting after this time of defrosting, wherein the second defrosting prohibition instruction is used to instruct the air conditioner to not perform the defrosting operation in the defrosting before exiting the heating mode.

[0043] Optionally, the air conditioner defrosting start condition comprises a first condition and a second condition.

[0044] The first condition is that the outdoor environment temperature is less than a first outdoor environment temperature threshold value and greater than a second outdoor environment temperature threshold value, the indoor environment temperature is greater than a first indoor environment temperature threshold value, the heating operation duration is greater than a first duration, and the outdoor heat exchanger pipe temperature is less than a first outdoor heat exchanger pipe temperature threshold value.

[0045] the second condition is that the outdoor environment temperature is less than or equal to the second outdoor environment temperature threshold, the indoor environment temperature is greater than a second indoor environment temperature threshold, the length of the heating operation is greater than a second length, and the outdoor heat exchanger tube temperature is less than a second outdoor heat exchanger tube temperature threshold;

[0046] In a case where the air conditioner defrosting opening condition includes a first condition and a second condition, the air conditioner defrosting opening condition is determined to be met when any one of the first condition and the second condition is met, the first indoor environment temperature threshold is less than the second indoor environment temperature threshold, the first length is less than the second length, and the first outdoor heat exchanger tube temperature threshold is greater than the second outdoor heat exchanger tube temperature threshold.

[0047] Optionally, the second control module is configured to control the outdoor heat exchanger tube temperature threshold used in the air conditioner defrosting opening condition to decrease in the following manner:

[0048] The first outdoor heat exchanger tube temperature threshold and the second outdoor heat exchanger tube temperature threshold are controlled to decrease, and the decreased first outdoor heat exchanger tube temperature threshold is greater than the decreased second outdoor heat exchanger tube temperature threshold.

[0049] Optionally, the apparatus further includes:

[0050] An initialization module configured to initialize the air conditioner defrosting opening condition in response to receiving an air conditioner shutdown instruction.

[0051] According to a third aspect of embodiments of the present disclosure, an air conditioner is provided, including:

[0052] a processor;

[0053] a memory for storing processor-executable instructions;

[0054] The processor is configured to perform the steps of the air conditioner defrosting control method provided in the first aspect of the present disclosure.

[0055] According to a fourth aspect of embodiments of the present disclosure, a computer-readable storage medium is provided, which stores computer program instructions, and the program instructions are executed by a processor to implement the steps of the air conditioner defrosting control method provided in the first aspect of the present disclosure.

[0056] The technical solutions provided by the embodiments of the present disclosure can include the following beneficial effects:

[0057] In the above technical solution, in the case that the air conditioner is in the heating mode, the defrosting of the air conditioner is controlled according to the obtained temperature parameter and the air conditioner defrosting opening condition, which can effectively reduce or melt the frost layer on the outdoor heat exchanger, avoid affecting the operation effect of the subsequent heating period, improve the heating effect of the air conditioner, and further improve the user experience. The defrosting duration of the defrosting operation of the air conditioner in the current heating mode is determined each time, and thus, based on the defrosting duration, it can be judged whether the defrosting operation performed by the air conditioner before is necessary. If the defrosting duration is short, it can be determined that the frost layer that can be removed by the defrosting operation is thin, and the influence on the subsequent heating is small, and thus it is determined that the defrosting operation performed before can not be performed, and the outdoor heat exchanger tube temperature threshold used in the air conditioner defrosting opening condition is reduced. In this way, the defrosting opening condition of the air conditioner can be made more stringent in the subsequent process, avoiding waste of energy, while avoiding frequent start and stop of the air conditioner compressor, prolonging the service life of the air conditioner.

[0058] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0059] The accompanying drawings, which are incorporated into and form part of the specification, illustrate an embodiment consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure.

[0060] Figure 1 is a flow chart of an air conditioner defrosting control method according to an exemplary embodiment.

[0061] Figure 2 is a block diagram of an air conditioner defrosting control device according to an exemplary embodiment.

[0062] Figure 3 is a block diagram of an air conditioner according to an exemplary embodiment. DETAILED DESCRIPTION

[0063] The exemplary embodiments will be described in detail herein with reference to the accompanying drawings. In the following description, the same numbers refer to the same elements throughout the drawings, unless otherwise represented. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present disclosure. Instead, they are merely examples of apparatuses and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0064] It should be noted that all actions of obtaining signals, information or data in the present disclosure are carried out in accordance with the corresponding data protection regulations and policies of the country where the device is located, and with the authorization given by the corresponding device owner.

[0065] Figure 1 is a flow chart of an air conditioner defrosting control method according to an exemplary embodiment. The method can be applied to a controller of a variable frequency air conditioner. As shown in Figure 1 , the method can include S101-S104.

[0066] S101, in the heating mode of the air conditioner, monitoring temperature parameters related to the operation of the air conditioner.

[0067] Among them, the temperature parameters can include outdoor environment temperature, indoor environment temperature and outdoor heat exchanger tube temperature.

[0068] For example, whether the air conditioner is in heating mode can be set by the user. The outdoor environment temperature can be obtained by the temperature sensor arranged outdoors, the indoor environment temperature can be obtained by the temperature sensor arranged indoors, and the outdoor coil temperature can be obtained by the temperature sensor arranged on the outdoor heat exchanger coil of the air conditioner outdoor unit. In this way, the outdoor environment temperature, indoor environment temperature and outdoor heat exchanger tube temperature can be obtained in real time through the arrangement of the above temperature sensors. Through the monitored temperature parameters related to the operation of the air conditioner, the current running state of the air conditioner can be determined to provide data support for subsequent air conditioner control.

[0069] S102, controlling the air conditioner defrosting according to the temperature parameters and the air conditioner defrosting start condition.

[0070] For example, the air conditioner defrosting start condition can include that the outdoor heat exchanger tube temperature is less than the corresponding outdoor heat exchanger tube temperature threshold, and the difference between the indoor environment temperature and the outdoor environment temperature is greater than the preset temperature difference. In this way, whether the air conditioner needs defrosting can be determined by the temperature parameters.

[0071] For example, to solve the problem of frost freezing on the outdoor unit of the air conditioner in the heating mode, the air conditioner can be configured with a defrosting function. In the case of the air conditioner entering the heating mode, if the indoor environment temperature reaches the indoor target temperature threshold (for example, the indoor target temperature threshold is the sum of the set temperature of the current air conditioner and the temperature correction value), the compressor of the air conditioner can be stopped to pause heating; at this time, if it is judged that the temperature parameters meet the air conditioner defrosting start condition, the compressor can be started to perform defrosting operation to achieve the purpose of defrosting until the temperature parameters meet the defrosting exit condition (for example, the outdoor heat exchanger tube temperature reaches the preset defrosting exit temperature), and the compressor can be stopped again; if the indoor environment temperature and the indoor target temperature threshold meet the heating condition, for example, the difference between the set temperature and the indoor environment temperature is greater than the preset heating start temperature difference, the compressor can be restarted to heat. In this way, in the heating mode of the air conditioner, the running state of the air conditioner can be controlled according to the obtained temperature parameters to meet the needs of air conditioner heating and defrosting.

[0072] S103, determining the defrosting time length of each defrosting operation in the current heating mode of the air conditioner.

[0073] For example, in the case that the air conditioner enters the heating mode, the defrosting duration of each defrosting operation can be recorded. For example, the defrosting duration of the current defrosting operation can be recorded by starting the timer when the air conditioner starts the current defrosting operation and stopping the timer when the air conditioner stops the current defrosting operation. Until the instruction of controlling the air conditioner to exit the heating mode is received, the recorded data can be cleared before the air conditioner exits the heating mode, so as to avoid occupying the resource storage space in the air conditioner.

[0074] In S104, the outdoor heat exchanger tube temperature threshold used in the defrosting start condition of the air conditioner is controlled to be reduced according to the defrosting duration.

[0075] For example, the outdoor heat exchanger tube temperature threshold used in the defrosting start condition of the air conditioner can be controlled to be reduced based on the defrosting duration of the current defrosting operation. For example, the outdoor heat exchanger tube temperature threshold used in the defrosting start condition of the air conditioner can be controlled to be reduced when the defrosting duration of the current defrosting operation is less than a defrosting duration threshold.

[0076] The defrosting duration of each defrosting operation in the current heating mode of the air conditioner can be used to determine whether the defrosting operation is necessary. If the defrosting duration of the defrosting operation is short, it can be determined that the frost layer removed by the current defrosting operation is thin, and the frost layer has little effect on subsequent heating, or even the frost layer can be self-melted due to the influence of the ambient temperature. Therefore, if the defrosting duration of the defrosting operation is short, it can be considered that the current defrosting operation is not necessary from the perspective of the effect on subsequent heating and power consumption, that is, the current defrosting operation is an inefficient or even ineffective defrosting operation. In this case, the outdoor heat exchanger tube temperature threshold used in the defrosting start condition of the air conditioner can be controlled to be reduced, and the defrosting start condition of the air conditioner can be made more stringent in the subsequent process, so as to avoid energy waste.

[0077] If the variable frequency air conditioner is in the heating mode, the compressor of the air conditioner will stop when the indoor ambient temperature reaches a preset value. When the defrosting function is started, the compressor of the air conditioner is restarted to perform the defrosting operation. If the air conditioner meets the requirement of starting the defrosting function repeatedly in a short time, the unnecessary defrosting process will waste the energy of the air conditioner, and the frequent start and stop of the compressor will affect the service life of the air conditioner.

[0078] To improve the accuracy of control and avoid reducing the outdoor heat exchanger tube temperature threshold used in the air conditioner defrosting opening condition, the outdoor heat exchanger tube temperature threshold used in the air conditioner defrosting opening condition can be controlled based on the defrosting time corresponding to the defrosting operation performed continuously for multiple times. In this way, the outdoor heat exchanger tube temperature threshold is adjusted in the case where the frost level is determined to be small for the previous few times. Thus, the updated air conditioner defrosting opening condition is more difficult to meet, so that the air conditioner defrosting is performed when the frost level is large, and the air conditioner defrosting can not be performed when the frost level is small, thereby realizing reasonable control of the air conditioner defrosting while ensuring stable operation of the air conditioner. Before exiting the heating mode, if the air conditioner performs heating once between two defrosting operations, the two defrosting operations can still be referred to as two continuous defrosting operations.

[0079] For example, according to the defrosting time, the control of reducing the outdoor heat exchanger tube temperature threshold used in the air conditioner defrosting opening condition can include: if the number of defrosting operations with a defrosting time less than a defrosting time threshold in the current heating mode is less than a first number threshold, the outdoor heat exchanger tube temperature threshold used in the air conditioner defrosting opening condition is controlled to be reduced.

[0080] The first number threshold can be pre-set, for example, it can be set to 3 times, and the defrosting time threshold can be pre-set, for example, it can be set to 1 min. That is, if the defrosting time of the defrosting operation continuously performed 3 times in the current heating mode is less than 1 min, the outdoor heat exchanger tube temperature threshold used in the air conditioner defrosting opening condition can be controlled to be reduced.

[0081] If the number of defrosting operations with a defrosting time less than a defrosting time threshold in the current heating mode is less than a first number threshold, it can be determined that the frost layers removed continuously for multiple times are thin frost layers. Even if the air conditioner does not perform multiple defrosting operations before, the frost layer is difficult to thicken to the extent that can affect the subsequent heating in a short time, and even the frost layer can melt by itself due to the influence of the environment temperature. That is, it can be determined that the defrosting operation performed continuously for the previous few times is unnecessary. To reduce the possibility of frequent and inefficient defrosting of the air conditioner, the outdoor heat exchanger tube temperature threshold used in the air conditioner defrosting opening condition can be controlled to be reduced, so that the condition for starting defrosting of the air conditioner in the subsequent process is more stringent, thereby avoiding waste of energy and frequent start-stop of the air conditioner compressor, and prolonging the service life of the air conditioner.

[0082] For another example, according to the defrosting duration, the control of reducing the outdoor heat exchanger tube temperature threshold used in the air conditioner defrosting opening condition can include: if it is determined that the sum of the defrosting durations of the air conditioner in the current heating mode is less than a total defrosting duration threshold corresponding to the accumulated defrosting number, the outdoor heat exchanger tube temperature threshold used in the air conditioner defrosting opening condition is controlled to be reduced. The total defrosting duration threshold can be determined based on the accumulated defrosting number, and the two are in a positive correlation relationship. The accumulated defrosting number refers to the accumulated defrosting number of the air conditioner in the current heating mode.

[0083] If it is determined that the sum of the defrosting durations of the air conditioner in the current heating mode is less than a total defrosting duration threshold corresponding to the accumulated defrosting number, it can be determined that the frosting condition of the air conditioner in a period of time is lighter, and it is difficult to generate a thicker frost layer in a short period of time. In order to avoid the frequent start and stop of the air conditioner compressor and the waste of energy, the outdoor heat exchanger tube temperature threshold used in the air conditioner defrosting opening condition can be controlled to be reduced.

[0084] In the above technical solution, under the condition that the air conditioner is in the heating mode, the air conditioner defrosting is controlled according to the obtained temperature parameter and the air conditioner defrosting opening condition, which can effectively reduce or melt the frost layer on the outdoor heat exchanger, avoid affecting the operation effect of the subsequent heating period, improve the heating effect of the air conditioner, and further improve the user experience. The defrosting duration of each defrosting operation of the air conditioner in the current heating mode is determined. In this way, based on the defrosting duration, it can be judged whether the defrosting operation performed by the air conditioner before is necessary. If the defrosting duration is short, it can be determined that the frost layer that can be removed by the defrosting operation is thin, and the influence on the subsequent heating is small. It is further determined that the defrosting operation performed before can not be executed, and the outdoor heat exchanger tube temperature threshold used in the air conditioner defrosting opening condition is controlled to be reduced. In this way, the defrosting opening condition of the air conditioner in the subsequent process can be made more stringent, the waste of energy can be avoided, the frequent start and stop of the air conditioner compressor can be avoided, and the service life of the air conditioner can be prolonged.

[0085] Optionally, in S102, controlling the air conditioner defrosting according to the temperature parameter and the air conditioner defrosting opening condition includes:

[0086] If the indoor environment temperature reaches the indoor target temperature threshold, the compressor of the air conditioner is controlled to stop and the heating operation duration of the current compressor heating is determined.

[0087] The indoor target temperature threshold is the sum of the current set temperature of the air conditioner and the temperature correction value. The heating from the start of the compressor to the stop of the compressor is one compressor heating.

[0088] For example, the set temperature of the current air conditioner can be set by the user based on his own needs, and the temperature correction value can also be pre-set, for example, it can be set to 3℃. In this way, in the case that the indoor environment temperature reaches the set temperature of the current air conditioner, the air conditioner still maintains heating for a short period of time, improves the indoor environment temperature and the stability of the air conditioner running state, fully guarantees that the indoor environment temperature reaches the set temperature before performing subsequent operations, and avoids affecting the indoor user comfort.

[0089] In the heating mode, if the air conditioner meets the heating condition as described above, the air conditioner can perform one heating, and in the process of air conditioner heating, the compressor runs until the indoor environment temperature reaches the indoor target temperature threshold, and the compressor of the air conditioner is stopped. The heating in the process of starting the compressor to stopping the compressor in the process of air conditioner heating is referred to as this time compressor heating, and the heating running time of this time compressor heating can be determined.

[0090] In response to determining that the temperature parameter and the heating running time meet the air conditioner defrosting opening condition, when the air conditioner allows the defrosting operation to be performed in this time defrosting and the stop time of the compressor reaches the delay time threshold, the air conditioner is controlled to defrost.

[0091] For example, the delay time threshold can be pre-set, for example, it can be set to 30s, and through the setting of the delay time threshold, the air conditioner can perform the defrosting operation after the running tends to be stable. If the air conditioner does not receive the first defrosting prohibition instruction, or the received first defrosting prohibition instruction has been invalidated, or does not receive the second defrosting prohibition instruction, it can be determined that the air conditioner allows the defrosting operation to be performed in this time defrosting.

[0092] Optionally, before the stop time of the compressor reaches the delay time threshold, the air conditioner defrosting control method provided by the present disclosure further comprises:

[0093] If it is determined that the difference between the indoor environment temperature and the set temperature is less than or equal to the temperature difference threshold, a first defrosting prohibition instruction is generated.

[0094] The first defrosting prohibition instruction is used to indicate that the air conditioner does not allow the defrosting operation to be performed in M times of defrosting after this time, M is a second number threshold, and the temperature difference threshold is less than the temperature correction value.

[0095] For example, the temperature difference threshold can be preset, for example, can be set to 1℃, if the user adjusts the set temperature or the indoor environment loses heat, the set temperature and the indoor environment temperature can be very close. At this time, if the compressor is started to perform defrosting operation, the defrosting operation can cause the indoor environment to fluctuate, and the air conditioner can quickly meet the start condition of the compressor (such as meeting the heating condition again) after completing defrosting. The control of the compressor starts again in a short time, which is easy to make the air conditioner enter the state of short-time frequent heating and defrosting, and the compressor frequently starts and stops. In order to avoid the occurrence of the above condition, the first defrosting prohibition instruction can be generated to avoid the frequent start and stop of the compressor in a short time. Therefore, in the case that the indoor environment does not lose heat and the user does not adjust the set temperature, when the compressor downtime reaches the delay duration threshold, the change of the indoor temperature is usually small, that is, the difference between the indoor environment temperature and the set temperature is greater than the temperature difference threshold. At this time, the first defrosting prohibition instruction is not generated, and at this time the compressor is restarted, and the defrosting operation can be performed.

[0096] The second number threshold can be preset, for example, also can be set to 3 times. Then the air conditioner can be controlled by the first defrosting prohibition instruction not to perform defrosting operation in the next 3 defrosting after this time, so as to avoid the frequent start and stop of the compressor in a short time.

[0097] Optionally, the air conditioner defrosting control method provided by the present disclosure further comprises:

[0098] In the M+1th defrosting after this time, if it is determined that the difference between the indoor environment temperature and the set temperature is greater than the temperature difference threshold before the downtime reaches the delay duration threshold, it is determined that the air conditioner is allowed to perform defrosting operation in the M+1th defrosting.

[0099] In the M+1th defrosting after this time, if it is determined that the difference between the indoor environment temperature and the set temperature is less than or equal to the temperature difference threshold before the downtime reaches the delay duration threshold, the second defrosting prohibition instruction is generated.

[0100] The second defrosting prohibition instruction is used to indicate that the air conditioner is not allowed to perform defrosting operation in the defrosting before the heating mode is exited.

[0101] Still taking the second number threshold preset to 3 times as an example, the air conditioner is controlled by the first defrosting prohibition instruction not to perform defrosting operation in the next 3 defrosting after this time, and in the 4th defrosting after this time, if it is determined that the difference between the indoor environment temperature and the set temperature is greater than the temperature difference threshold before the downtime reaches the delay duration threshold, it is determined that the air conditioner is allowed to perform defrosting operation in the 4th defrosting after this time, that is, the first defrosting prohibition instruction is invalid. In this way, after avoiding the frequent start and stop of the compressor in a short time, the air conditioner can be restored to the state of allowing defrosting operation to avoid affecting the operation effect of the subsequent heating period.

[0102] If it is determined that the difference between the indoor ambient temperature and the set temperature is less than or equal to the temperature difference threshold before the length of time when the air conditioner is stopped reaches the delay length threshold, it can be determined that the indoor ambient temperature and the set temperature are always in a very close state for a long period of time. If the compressor is started for defrosting at this time, the air conditioner is likely to enter a state of short-time and frequent heating and defrosting. To avoid the occurrence of this state, a second defrosting prohibition instruction can be generated to prevent the air conditioner from performing defrosting operation in defrosting before the heating mode is exited.

[0103] Optionally, the air conditioner defrosting start condition comprises a first condition and a second condition.

[0104] The first condition is that the outdoor ambient temperature is less than a first outdoor ambient temperature threshold and greater than a second outdoor ambient temperature threshold, the indoor ambient temperature is greater than a first indoor ambient temperature threshold, the heating operation length is greater than a first length, and the outdoor heat exchanger tube temperature is less than a first outdoor heat exchanger tube temperature threshold.

[0105] The second condition is that the outdoor ambient temperature is less than or equal to the second outdoor ambient temperature threshold, the indoor ambient temperature is greater than a second indoor ambient temperature threshold, the heating operation length is greater than a second length, and the outdoor heat exchanger tube temperature is less than a second outdoor heat exchanger tube temperature threshold.

[0106] In the case where the air conditioner defrosting start condition comprises the first condition and the second condition, when any one of the first condition and the second condition is met, it is determined that the air conditioner defrosting start condition is met. The first indoor ambient temperature threshold is less than the second indoor ambient temperature threshold, the first length is less than the second length, and the first outdoor heat exchanger tube temperature threshold is greater than the second outdoor heat exchanger tube temperature threshold.

[0107] For example, the first outdoor ambient temperature threshold T W1 and the second outdoor ambient temperature threshold T W2 can be preset, wherein the first outdoor ambient temperature threshold T W1 is greater than the second outdoor ambient temperature threshold T W2 . For example, the first outdoor ambient temperature threshold T W1 can be set to -5℃, and the second outdoor ambient temperature threshold T W2 can be set to -10℃.

[0108] The first indoor ambient temperature threshold T n1 and the second indoor ambient temperature threshold T n2 can be preset, wherein the first indoor ambient temperature threshold T n1 is less than the second indoor ambient temperature threshold T n2 . For example, the first indoor ambient temperature threshold T n1It can be set to 16℃, the second indoor ambient temperature threshold T n2 It can be set to 21℃.

[0109] First outdoor heat exchanger tube temperature threshold T wh1 Second outdoor heat exchanger tube temperature threshold T wh2 The temperature threshold T of the first outdoor heat exchanger tube can be preset. wh1 Greater than the second outdoor heat exchanger tube temperature threshold T wh2 For example, the first outdoor heat exchanger tube temperature threshold T wh1 It can be set to -8℃, the second outdoor heat exchanger tube temperature threshold T wh2 It can be set to -13℃.

[0110] The first duration t1 and the second duration t2 are preset, wherein the first duration t1 is shorter than the second duration t2. For example, the first duration t1 can be set to 8 minutes and the second duration t2 can be set to 10 minutes.

[0111] Compared to the first condition, the second condition has a lower outdoor ambient temperature range and a higher indoor ambient temperature range, resulting in a longer time required for frosting and a lower outdoor heat exchanger pipe temperature during frosting. Therefore, by setting the first and second conditions, it is possible to more accurately determine whether the air conditioner needs to activate defrosting.

[0112] Accordingly, in S104, controlling the reduction of the outdoor heat exchanger pipe temperature threshold used in the air conditioning defrost activation conditions may include:

[0113] The temperature thresholds of the first outdoor heat exchanger tube and the second outdoor heat exchanger tube are controlled to decrease, and the reduced temperature threshold of the first outdoor heat exchanger tube is greater than the reduced temperature threshold of the second outdoor heat exchanger tube.

[0114] For example, the temperature threshold values ​​of the first and second outdoor heat exchanger tubes can be reduced by the same amount. After the temperature threshold values ​​of the first and second outdoor heat exchanger tubes are reduced, it becomes more difficult for the obtained temperature parameters related to air conditioner operation to meet the first or second condition. This makes the conditions for starting defrosting in the air conditioner more stringent in subsequent processes, avoiding energy waste and frequent start-stop of the air conditioner compressor, thus extending the service life of the air conditioner.

[0115] Optionally, the air conditioning defrosting control method provided in this disclosure further includes:

[0116] In response to receiving the air conditioner shutdown command, the defrosting start conditions of the air conditioner are initialized.

[0117] For example, if the outdoor heat exchanger pipe temperature threshold is reduced during the heating mode of the air conditioner, when the air conditioner shutdown instruction issued by the user is received, the reduced outdoor heat exchanger pipe temperature threshold can be restored to the value before the reduction before the air conditioner is controlled to shut down, that is, the defrosting opening condition of the air conditioner is initialized. In this way, the defrosting opening condition of the air conditioner can be adaptively adjusted based on the obtained temperature parameters related to the operation of the air conditioner after each start of the air conditioner, so as to improve the accuracy of the defrosting opening condition.

[0118] Based on the same inventive concept, the disclosure also provides an air conditioner defrosting control device. Figure 2 is a block diagram of an air conditioner defrosting control device 200 according to an exemplary embodiment. Referring to Figure 2 , the air conditioner defrosting control device 200 can include:

[0119] a monitoring module 201 for monitoring temperature parameters related to the operation of the air conditioner in the heating mode of the air conditioner, wherein the temperature parameters include outdoor environment temperature, indoor environment temperature and outdoor heat exchanger pipe temperature;

[0120] a first control module 202 for controlling defrosting of the air conditioner according to the temperature parameters and the defrosting opening condition of the air conditioner;

[0121] a first determination module 203 for determining the defrosting duration of each defrosting operation of the air conditioner in the current heating mode;

[0122] a second control module 204 for controlling reduction of the outdoor heat exchanger pipe temperature threshold used in the defrosting opening condition of the air conditioner according to the defrosting duration.

[0123] In the above technical solution, when the air conditioner is in the heating mode, the defrosting of the air conditioner is controlled according to the obtained temperature parameters and the defrosting opening condition of the air conditioner, which can effectively reduce or melt the frost layer on the outdoor heat exchanger, avoid affecting the operation effect of the subsequent heating period, improve the heating effect of the air conditioner, and further improve the user experience. The defrosting duration of each defrosting operation of the air conditioner in the current heating mode is determined, so that based on the defrosting duration, it can be judged whether the previous defrosting operation of the air conditioner is necessary. If the defrosting duration is short, it can be determined that the frost layer that can be removed by the defrosting operation is thin, and the influence on the subsequent heating is small, and it is determined that the previous defrosting operation can not be performed. The outdoor heat exchanger pipe temperature threshold used in the defrosting opening condition of the air conditioner is reduced, so that the defrosting opening condition of the air conditioner can be more stringent in the subsequent process, avoiding waste of energy, and avoiding frequent start and stop of the air conditioner compressor, prolonging the service life of the air conditioner.

[0124] Optionally, the second control module 204 is configured to control the outdoor heat exchanger pipe temperature threshold used in the air conditioner defrosting opening condition to decrease according to the defrosting duration in the following manner:

[0125] If the number of continuous defrosting operations in the current heating mode of the air conditioner, in which the defrosting duration is less than the defrosting duration threshold, is less than the first number threshold, the outdoor heat exchanger pipe temperature threshold used in the air conditioner defrosting opening condition is controlled to decrease.

[0126] Optionally, the first control module 202 comprises:

[0127] A first control submodule is configured to, if the indoor environment temperature reaches an indoor target temperature threshold, control the compressor of the air conditioner to stop and determine a heating operation duration of the current compressor heating, wherein the indoor target temperature threshold is the sum of the current set temperature of the air conditioner and a temperature correction value, and the heating from the start of the compressor to the stop of the compressor is one compressor heating.

[0128] A second control submodule is configured to, in response to determining that the temperature parameter and the heating operation duration satisfy the air conditioner defrosting opening condition, control the air conditioner to defrost when the defrosting operation is allowed to be performed in the current defrosting of the air conditioner and the stop duration of the compressor reaches a delay duration threshold.

[0129] Optionally, the first control module 202 further comprises:

[0130] A first instruction generation submodule is configured to, if it is determined that the difference between the indoor environment temperature and the set temperature is less than or equal to a temperature difference threshold, generate a first defrosting prohibition instruction, wherein the first defrosting prohibition instruction is used to indicate that the air conditioner is not allowed to perform the defrosting operation in the current and M times of defrosting after the current defrosting, M is a second number threshold, and the temperature difference threshold is less than the temperature correction value.

[0131] Optionally, the first control module 202 further comprises:

[0132] A determination submodule is configured to, in the M+1th defrosting after the current defrosting of the air conditioner, if it is determined that the difference between the indoor environment temperature and the set temperature is greater than a temperature difference threshold before the stop duration reaches a delay duration threshold, determine that the air conditioner is allowed to perform the defrosting operation in the M+1th defrosting.

[0133] The second instruction generating submodule is configured to generate a second defrosting prohibition instruction if it is determined that the difference between the indoor environment temperature and the set temperature is less than or equal to the temperature difference threshold before the shutdown duration reaches the delay duration threshold during the M+1th defrosting after the current defrosting, and the second defrosting prohibition instruction is configured to indicate that the air conditioner is not allowed to perform the defrosting operation in the defrosting before the air conditioner exits the heating mode.

[0134] Optionally, the air conditioner defrosting start condition comprises a first condition and a second condition.

[0135] The first condition is that the outdoor environment temperature is less than a first outdoor environment temperature threshold and greater than a second outdoor environment temperature threshold, the indoor environment temperature is greater than a first indoor environment temperature threshold, the heating operation duration is greater than a first duration, and the outdoor heat exchanger pipe temperature is less than a first outdoor heat exchanger pipe temperature threshold.

[0136] The second condition is that the outdoor environment temperature is less than or equal to the second outdoor environment temperature threshold, the indoor environment temperature is greater than a second indoor environment temperature threshold, the heating operation duration is greater than a second duration, and the outdoor heat exchanger pipe temperature is less than a second outdoor heat exchanger pipe temperature threshold.

[0137] In the case where the air conditioner defrosting start condition comprises the first condition and the second condition, it is determined that the air conditioner defrosting start condition is met when any one of the first condition and the second condition is met, the first indoor environment temperature threshold is less than the second indoor environment temperature threshold, the first duration is less than the second duration, and the first outdoor heat exchanger pipe temperature threshold is greater than the second outdoor heat exchanger pipe temperature threshold.

[0138] Optionally, the second control module 204 is configured to control the outdoor heat exchanger pipe temperature threshold used in the air conditioner defrosting start condition to decrease in the following manner:

[0139] The first outdoor heat exchanger pipe temperature threshold and the second outdoor heat exchanger pipe temperature threshold are controlled to decrease, and the decreased first outdoor heat exchanger pipe temperature threshold is greater than the decreased second outdoor heat exchanger pipe temperature threshold.

[0140] Optionally, the device 200 further comprises:

[0141] The initialization module is configured to initialize the air conditioner defrosting start condition in response to receiving an air conditioner shutdown instruction.

[0142] As to the device in the above embodiments, the specific manners in which various modules perform operations have been described in detail in the embodiments of the method, and thus will not be described in detail here.

[0143] The present disclosure also provides a computer readable storage medium, having stored thereon computer program instructions, which when executed by a processor implement the steps of the air conditioner defrosting control method provided by the present disclosure.

[0144] Figure 3 is a block diagram of an air conditioner 800 according to an exemplary embodiment. For example, the air conditioner 800 can be a variable frequency air conditioner.

[0145] Referring to Figure 3 , the air conditioner 800 can include one or more of the following components: a processing component 802, a memory 804, a power supply component 806, a multimedia component 808, an audio component 810, an input / output (I / O) interface 812, a sensor component 814, and a communication component 816.

[0146] The processing component 802 usually controls overall operations of the air conditioner 800, such as operations associated with displaying, making phone calls, data communications, camera operations and recording operations. The processing component 802 can include one or more processors 820 to execute instructions to complete all or part of the steps of the air conditioner defrosting control method described above. In addition, the processing component 802 can include one or more modules to facilitate the interaction between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate the interaction between the multimedia component 808 and the processing component 802.

[0147] The memory 804 is configured to store various types of data to support operations of the air conditioner 800. Examples of these data include instructions for any application or method operating on the air conditioner 800, contact data, phonebook data, messages, pictures, videos, etc. The memory 804 can be implemented by any type of volatile or non-volatile storage devices or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk or optical disk.

[0148] The power supply component 806 provides power to various components of the air conditioner 800. The power supply component 806 can include a power supply management system, one or more power supplies, and other components associated with generating, managing and distributing power for the air conditioner 800.

[0149] The multimedia component 808 includes a screen to provide an output interface between the air conditioner 800 and a user. In some embodiments, the screen includes a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen can be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touch, swiping, and gestures on the touch panel. The touch sensors can not only sense a boundary of a touching or swiping action, but also detect duration and pressure related to the touching or swiping action. In some embodiments, the multimedia component 808 includes a front camera and / or a back camera. The front and / or back camera can receive external multimedia data when the air conditioner 800 is in an operation mode, such as a shooting mode or a video mode. Each of the front and back camera can be a fixed optical lens system or have a focal length and optical zoom capability.

[0150] The audio component 810 is configured to output and / or input audio signals. For example, the audio component 810 includes a microphone (MIC) to receive an external audio signal when the air conditioner 800 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal can be further stored in the memory 804 or transmitted via the communication component 816. In some embodiments, the audio component 810 further includes a speaker to output audio signals.

[0151] The input / output interface 812 provides an interface between the processing component 802 and peripheral interface modules, which can be a keypad, a click wheel, buttons, and the like. The buttons can include, but are not limited to, a home button, a volume button, a start button, and a lock button.

[0152] The sensor component 814 includes one or more sensors to provide various aspects of state assessment for the air conditioner 800. For example, the sensor component 814 can detect an open / close state of the air conditioner 800, relative positioning of components, such as a display and a keypad of the air conditioner 800, a change in position of the air conditioner 800 or a component of the air conditioner 800, presence or absence of user contact with the air conditioner 800, orientation or acceleration / deceleration of the air conditioner 800, and a change in temperature of the air conditioner 800. The sensor component 814 can include a proximity sensor configured to detect presence of a nearby object without any physical contact. The sensor component 814 can further include a light sensor, such as a CMOS or CCD image sensor, for use in an imaging application. In some embodiments, the sensor component 814 can further include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0153] The communication component 816 is configured to facilitate wired or wireless communication between the air conditioner 800 and other devices. The air conditioner 800 can access a wireless network based on a communication standard, such as WiFi, 2G, or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 also includes a Near Field Communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on Radio Frequency Identification (RFID) technology, Infrared Data Association (IrDA) technology, Ultra-WideBand (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0154] In an exemplary embodiment, the air conditioner 800 can be implemented with one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, micro-controllers, microprocessors, or other electronic elements for executing the above-described air conditioner defrosting control method.

[0155] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions, such as the memory 804 including instructions, is also provided, which can be executed by the processor 820 of the air conditioner 800 to perform the above-described air conditioner defrosting control method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disc, and an optical data storage device, etc.

[0156] In another exemplary embodiment, a computer program product including a computer program capable of being executed by a programmable device is also provided, which has a code portion for executing the above-described air conditioner defrosting control method when executed by the programmable device.

[0157] Other embodiments of the present disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the present disclosure. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure following the general principles thereof and including modifications and equivalents of the present disclosure. The specification and examples are to be regarded as illustrative only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0158] It should be understood that the present disclosure is not limited to the precise construction that has been described above and shown in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the present disclosure. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An air conditioner defrosting control method, characterized in that, include: In the air conditioning heating mode, temperature parameters related to the operation of the air conditioner are monitored, including outdoor ambient temperature, indoor ambient temperature and outdoor heat exchanger tube temperature. The air conditioner defrosts according to the temperature parameters and the defrosting activation conditions. Determine the defrosting duration of each defrosting operation performed by the air conditioner in the current heating mode; Based on the defrosting duration, control the reduction of the outdoor heat exchanger tube temperature threshold used in the air conditioner defrosting activation conditions; The step of controlling the air conditioner defrosting according to the temperature parameters and the air conditioner defrosting activation conditions includes: If the indoor ambient temperature reaches the indoor target temperature threshold, the compressor of the air conditioner is controlled to stop and the heating operation time of the compressor is determined. The indoor target temperature threshold is the sum of the current air conditioner's set temperature and temperature correction value. The heating process from the compressor starting up to the compressor stopping is one compressor heating cycle. In response to determining that the temperature parameter and the heating operation duration meet the air conditioner defrosting start conditions, when defrosting is allowed during the current defrosting operation of the air conditioner and the compressor shutdown duration reaches the delay duration threshold, the air conditioner is controlled to defrost.

2. The air conditioning defrosting control method according to claim 1, characterized in that, The step of controlling and reducing the outdoor heat exchanger pipe temperature threshold used in the air conditioner defrosting activation conditions based on the defrosting duration includes: If, in the current heating mode, the number of consecutive defrosting operations with a defrosting duration less than the defrosting duration threshold is less than the first time threshold, then the outdoor heat exchanger pipe temperature threshold used in the defrosting start condition of the air conditioner is reduced.

3. The air conditioning defrosting control method according to claim 1, characterized in that, Before the compressor shutdown duration reaches the delay duration threshold, the method further includes: If the difference between the indoor ambient temperature and the set temperature is determined to be less than or equal to a temperature difference threshold, a first defrost prohibition instruction is generated. The first defrost prohibition instruction is used to instruct the air conditioner not to perform defrost operation in the M defrost operations after this one, where M is the second number threshold and the temperature difference threshold is less than the temperature correction value.

4. The air conditioning defrosting control method according to claim 3, characterized in that, The method further includes: If, during the (M+1)th defrost cycle after this cycle, it is determined that the difference between the indoor ambient temperature and the set temperature is greater than the temperature difference threshold before the shutdown duration reaches the delay duration threshold, then it is determined that the air conditioner is allowed to perform the defrost operation during the (M+1)th defrost cycle. If, during the (M+1)th defrost cycle following this cycle, it is determined that the difference between the indoor ambient temperature and the set temperature is less than or equal to the temperature difference threshold before the shutdown duration reaches the delay duration threshold, a second defrost prohibition command is generated. The second defrost prohibition command is used to instruct the air conditioner not to perform the defrost operation during the defrost cycle before exiting the heating mode.

5. The air conditioning defrosting control method according to claim 1, characterized in that, The conditions for starting the air conditioner defrost include a first condition and a second condition: The first condition is that the outdoor ambient temperature is less than a first outdoor ambient temperature threshold and greater than a second outdoor ambient temperature threshold, the indoor ambient temperature is greater than a first indoor ambient temperature threshold, the heating operation duration is greater than a first duration, and the outdoor heat exchanger tube temperature is less than a first outdoor heat exchanger tube temperature threshold. The second condition is that the outdoor ambient temperature is less than or equal to the second outdoor ambient temperature threshold, the indoor ambient temperature is greater than the second indoor ambient temperature threshold, the heating operation duration is greater than the second duration, and the outdoor heat exchanger tube temperature is less than the second outdoor heat exchanger tube temperature threshold. Wherein, when the air conditioner defrost activation conditions include a first condition and a second condition, the air conditioner defrost activation conditions are determined to be met when either the first condition or the second condition is met, wherein the first indoor ambient temperature threshold is less than the second indoor ambient temperature threshold, the first duration is less than the second duration, and the first outdoor heat exchanger tube temperature threshold is greater than the second outdoor heat exchanger tube temperature threshold.

6. The air conditioning defrosting control method according to claim 5, characterized in that, The control of reducing the outdoor heat exchanger pipe temperature threshold used in the air conditioner defrosting activation condition includes: The temperature threshold values ​​of the first outdoor heat exchanger tube and the second outdoor heat exchanger tube are controlled to decrease, and the reduced temperature threshold value of the first outdoor heat exchanger tube is greater than the reduced temperature threshold value of the second outdoor heat exchanger tube.

7. The air conditioning defrosting control method according to claim 1, characterized in that, The method further includes: In response to receiving an air conditioner shutdown command, the defrosting start conditions of the air conditioner are initialized.

8. An air conditioner defrosting control device, characterized in that, include: The monitoring module is used to monitor temperature parameters related to the operation of the air conditioner in the air conditioning heating mode, wherein the temperature parameters include outdoor ambient temperature, indoor ambient temperature and outdoor heat exchanger tube temperature. The first control module is used to control the air conditioner to defrost based on the temperature parameters and the air conditioner defrosting activation conditions. The first determining module is used to determine the defrosting duration of each defrosting operation performed by the air conditioner in the current heating mode; The second control module is used to control and reduce the outdoor heat exchanger tube temperature threshold used in the air conditioner defrosting start condition according to the defrosting duration. The first control module includes: The first control submodule is used to control the compressor of the air conditioner to stop and determine the heating operation duration of the compressor heating if the indoor ambient temperature reaches the indoor target temperature threshold. The indoor target temperature threshold is the sum of the current air conditioner's set temperature and temperature correction value. The heating process from the compressor starting up to the compressor stopping is one compressor heating cycle. The second control submodule is used to control the air conditioner to defrost when, in response to determining that the temperature parameter and the heating operation duration meet the air conditioner defrosting start conditions, the defrosting operation is allowed to be performed in the current defrosting of the air conditioner and the shutdown duration of the compressor reaches the delay duration threshold.

9. An air conditioner, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to implement the steps of the method according to any one of claims 1-7.

10. A computer-readable storage medium having computer program instructions stored thereon, characterized in that, When executed by a processor, the program instructions implement the steps of the method described in any one of claims 1-7.

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