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

Abstract

The present disclosure relates to the field of air conditioning, and in particular to an air conditioning defrost control method, device, air conditioner and medium. The method comprises: monitoring temperature parameters related to the operation of the air conditioner; in response to the end of defrosting of the air conditioner, obtaining the duration of the defrosting process; in response to determining that the defrosting compensation condition is met according to the duration and temperature parameters, controlling to reduce the defrost temperature threshold used in the defrost start judgment condition, and / or controlling to increase the defrost temperature difference threshold used in the defrost start judgment condition, the defrost temperature threshold represents the temperature that the outdoor coil temperature required to start the defrost cannot be higher than, and the defrost temperature difference threshold represents the temperature difference that the difference between the outdoor ambient temperature required to start the defrost and the outdoor coil temperature cannot be lower than. In this way, the defrost start judgment condition of the air conditioner can be made stricter in the subsequent process, reduce the possibility of frost-free defrosting of the air conditioner, avoid energy waste, avoid affecting the heating effect of the air conditioner, and thus improve the user experience.

Description

Technical Field

[0001] The present disclosure relates to the field of air conditioning, and in particular to an air conditioning defrost control method, device, air conditioner and medium. Background Art

[0002] With the increasing popularity of air conditioners, people's demands for comfort are also increasing. Frost and freezing can occur on outdoor units when operating in extremely cold climates. To address this issue, existing air conditioners are often equipped with a defrost function. Typically, the outdoor coil temperature is used as the basis for determining whether to activate the defrost function. However, when the outdoor humidity is low, the outdoor coil temperature is also low, which can easily cause the air conditioner to enter the defrost state when it is not frost-proof, affecting the heating effect and reducing the user experience. Summary of the Invention

[0003] In order to overcome the problems existing in the related art, the present disclosure provides an air conditioner defrost control method, device, air conditioner and medium.

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

[0005] monitoring temperature parameters related to the operation of the air conditioner, wherein the temperature parameters include outdoor coil temperature, outdoor ambient temperature, indoor coil temperature, and indoor ambient temperature;

[0006] In response to the air conditioner defrosting being completed, obtaining the duration of the defrosting process;

[0007] In response to determining that the defrost compensation condition is met based on the duration and the temperature parameter, the defrost temperature threshold used in the defrost start judgment condition is controlled to be reduced, and / or the defrost temperature difference threshold used in the defrost start judgment condition is controlled to be increased, the defrost temperature threshold represents the temperature that the outdoor coil temperature required to start defrost cannot be higher than, and the defrost temperature difference threshold represents the temperature difference that the difference between the outdoor ambient temperature required to start defrost and the outdoor coil temperature cannot be lower than.

[0008] Optionally, the defrost compensation condition includes:

[0009] The duration is not greater than a defrost duration threshold corresponding to the outdoor ambient temperature, and the change in the indoor coil temperature is not greater than an indoor coil temperature difference threshold corresponding to the indoor ambient temperature, wherein the change in the indoor coil temperature is a difference between the indoor coil temperature corresponding to a preset time before the air conditioner defrost is turned on and the indoor coil temperature corresponding to the time when the air conditioner defrost is turned on.

[0010] Optionally, the defrost compensation condition further includes:

[0011] The cumulative decrease in the defrost temperature threshold does not reach a preset total decrease, and / or the cumulative increase in the defrost temperature difference threshold does not reach a preset total increase.

[0012] Optionally, there is a negative correlation between the outdoor ambient temperature and the defrost duration threshold.

[0013] Optionally, there is a positive correlation between the indoor ambient temperature and the indoor coil temperature difference threshold.

[0014] Optionally, the controlling to reduce the defrost temperature threshold used in the defrost start judgment condition, and / or the controlling to increase the defrost temperature difference threshold used in the defrost start judgment condition, includes:

[0015] reducing the defrost temperature threshold by a target reduction amount; and / or,

[0016] The defrost temperature difference threshold is increased by a target increase amount.

[0017] Optionally, the method further includes:

[0018] After the air conditioner enters a heating mode, in response to determining that the defrost start judgment condition is satisfied, the air conditioner is controlled to start defrost.

[0019] Optionally, the method further includes:

[0020] In response to the air conditioner exiting the heating mode, the defrost start judgment condition is initialized.

[0021] According to a second aspect of an embodiment of the present disclosure, there is provided an air conditioner defrost control device, comprising:

[0022] a monitoring module for monitoring temperature parameters related to the operation of the air conditioner, wherein the temperature parameters include outdoor coil temperature, outdoor ambient temperature, indoor coil temperature and indoor ambient temperature;

[0023] An acquisition module, configured to acquire a duration of the defrosting process in response to the end of defrosting of the air conditioner;

[0024] The first control module is used for controlling the reduction of the defrost temperature threshold used in the defrost start judgment condition in response to determining that the defrost compensation condition is satisfied according to the duration and the temperature parameter, and / or controlling the increase of the defrost temperature difference threshold used in the defrost start judgment condition, wherein the defrost temperature threshold represents the temperature that the outdoor coil temperature required to start the defrost cannot be higher than, and the defrost temperature difference threshold represents the temperature difference that the difference between the outdoor ambient temperature required to start the defrost and the outdoor coil temperature cannot be lower than.

[0025] According to a third aspect of an embodiment of the present disclosure, there is provided an air conditioner, comprising:

[0026] processor;

[0027] a memory for storing processor-executable instructions;

[0028] The processor is configured to execute the steps of the air conditioner defrost control method provided in the first aspect of the present disclosure.

[0029] According to a fourth aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, on which computer program instructions are stored. When the program instructions are executed by a processor, the steps of the air conditioner defrost control method provided in the first aspect of the present disclosure are implemented.

[0030] The technical solutions provided by the embodiments of the present disclosure may have the following beneficial effects:

[0031] By monitoring the temperature parameters related to the operation of the air conditioner, the real-time changes of the outdoor coil temperature, the outdoor ambient temperature, the indoor coil temperature and the indoor ambient temperature can be determined. By obtaining the duration of the defrost process, it can be determined whether the frosting condition is serious when the air conditioner enters the defrost state. According to the temperature parameters and the duration of the defrost process, it can be determined whether the defrost process of the air conditioner outdoor unit last time was a frost-free defrost, that is, whether the actual frosting condition of the air conditioner outdoor unit before the last defrost is necessary for defrosting. If it is determined that the air conditioner's last defrost process was a frost-free defrost, that is, the defrost compensation condition is met, then the defrost temperature threshold used in the defrost start judgment condition is controlled to be reduced, and / or the defrost temperature difference threshold used in the defrost start judgment condition is controlled to be increased. In this way, the defrost start judgment condition of the air conditioner can be made more stringent in the subsequent process, reducing the possibility of frost-free defrosting of the air conditioner, thereby avoiding energy waste and affecting the heating effect of the air conditioner, thereby improving the user experience.

[0032] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0034] Figure 1 The figure is a flow chart showing a method for controlling defrosting of an air conditioner according to an exemplary embodiment.

[0035] Figure 2 The figure is a block diagram of an air conditioner defrost control device according to an exemplary embodiment.

[0036] Figure 3is a block diagram of an air conditioner according to an exemplary embodiment. DETAILED DESCRIPTION

[0037] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0038] It should be noted that all actions of acquiring signals, information or data in this application are carried out in compliance with the relevant data protection laws and policies of the country where they are located and with the authorization given by the owner of the corresponding device.

[0039] Figure 1 FIG. 1 is a flow chart showing a method for controlling defrosting of an air conditioner according to an exemplary embodiment. The method can be applied to a controller of an air conditioner. Figure 1 As shown, the method may include S101 to S103.

[0040] S101, monitoring temperature parameters related to air conditioning operation.

[0041] The temperature parameters may include outdoor coil temperature, outdoor ambient temperature, indoor coil temperature, and indoor ambient temperature.

[0042] For example, the outdoor ambient temperature can be obtained by a temperature sensor installed outdoors, the indoor ambient temperature can be obtained by a temperature sensor installed indoors, the outdoor coil temperature can be obtained by a temperature sensor installed on the coil (outdoor condenser) of the air conditioner outdoor unit, and the indoor coil temperature can be obtained by a temperature sensor installed on the coil (indoor evaporator) of the air conditioner indoor unit. In this way, the outdoor coil temperature, outdoor ambient temperature, indoor coil temperature, and indoor ambient temperature can be determined in real time by installing the above temperature sensors.

[0043] S102: In response to the air conditioner defrosting being completed, obtaining the duration of the defrosting process.

[0044] For example, to address the issue of frost and freezing on the outdoor unit of an air conditioner operating in severe cold weather, a defrost function can be configured in the air conditioner. When the air conditioner enters heating mode and the defrost activation criteria are met, the air conditioner can initiate defrost. For example, the defrost activation criteria can be determined based on the outdoor ambient temperature and the outdoor coil temperature to control whether the air conditioner is enabled. The obtained defrost duration can be used to determine whether the outdoor unit is severely frosted when defrost is activated. The more severe the frosting, the longer the defrost duration.

[0045] S103, in response to determining that the defrost compensation conditions are met based on the duration and temperature parameters, controlling to reduce the defrost temperature threshold used in the defrost start judgment condition, and / or controlling to increase the defrost temperature difference threshold used in the defrost start judgment condition, the defrost temperature threshold represents the temperature that the outdoor coil temperature required to start defrost cannot be higher than, and the defrost temperature difference threshold represents the temperature difference that the difference between the outdoor ambient temperature required to start defrost and the outdoor coil temperature cannot be lower than.

[0046] Exemplarily, a defrost compensation condition can be pre-set. If the defrost compensation condition is met, it can be determined that although the temperature parameters related to the air conditioner operation before the last defrost was turned on met the defrost turn-on judgment condition, the actual frost situation was relatively light, or no frost had formed. In other words, if the defrost compensation condition is met, it can be determined that the entire defrost process after the last defrost was turned on was actually a frost-free defrost. The frost-free defrost situation can include the situation where the air conditioner turns on the defrost when the outdoor unit of the air conditioner has not yet frosted, and can also include the situation where the air conditioner turns on the defrost when the frost situation is relatively light and no defrost is required. Exemplarily, if the defrost process lasts for a short time and the indoor coil temperature changes little within a certain period of time before the defrost is turned on, it can be determined that the indoor coil temperature did not significantly decrease before the defrost was turned on, the frost situation when the outdoor unit was turned on was not serious, and the defrost process ended quickly. In this way, it can be determined that the last defrost process was actually a frost-free defrost, which not only results in energy waste but also may affect the heating effect of the air conditioner.

[0047] With respect to the defrost temperature threshold and the defrost temperature difference threshold, it can be determined that the defrost start judgment conditions may include: outdoor coil temperature ≤ defrost temperature threshold; outdoor ambient temperature - outdoor coil temperature ≥ defrost temperature difference threshold.

[0048] Taking the outdoor coil temperature as -8°C and the outdoor ambient temperature as -1.6°C as an example, if the defrost temperature threshold required when defrosting was last turned on was -8°C and the defrost temperature difference threshold was 6°C, and the difference between the outdoor ambient temperature and the outdoor coil temperature was 6.4°C, it can be determined that the outdoor coil temperature and the outdoor ambient temperature meet the defrost start judgment conditions, and the air conditioner can start defrosting.

[0049] If the defrost temperature threshold is reduced from -8°C to -8.5°C, under the same temperature conditions, the outdoor coil temperature will be -8°C > -8.5°C, which is higher than the defrost temperature threshold and does not meet the outdoor coil temperature requirement for defrost activation. By reducing the defrost temperature threshold, the air conditioner's defrost activation criteria can be made more stringent in subsequent processes, reducing the possibility of defrosting without frost.

[0050] If the defrost temperature difference threshold is increased from 6°C to 6.5°C, under the same temperature conditions, 6.4°C < 6.5°C, which is lower than the defrost temperature difference threshold and does not meet the defrost activation requirement. In this way, by increasing the defrost temperature threshold, the air conditioner's defrost activation judgment conditions can be made more stringent in the subsequent process, reducing the possibility of the air conditioner defrosting without frost.

[0051] If the defrost temperature threshold is simultaneously reduced to -8.5°C and the defrost temperature difference threshold is increased to 6.5°C, under the same temperature conditions, the outdoor coil temperature is higher than the defrost temperature threshold, and the difference between the outdoor ambient temperature and the outdoor coil temperature is lower than the defrost temperature difference threshold, the defrost activation requirement is not met. By reducing the defrost temperature threshold and increasing the defrost temperature difference threshold, the air conditioner's defrost activation criteria can be made more stringent in subsequent processes, reducing the possibility of defrosting without frost.

[0052] When it is determined that the defrost compensation conditions are met, the defrost temperature threshold used in the defrost start judgment condition can be controlled to be reduced, and / or the defrost temperature difference threshold used in the defrost start judgment condition can be controlled to be increased, so as to make the defrost start judgment condition of the air conditioner more stringent in the subsequent process, reduce the possibility of frost-free defrosting of the air conditioner, avoid energy waste, avoid affecting the heating effect of the air conditioner, and thus improve the user experience.

[0053] By monitoring the temperature parameters related to the operation of the air conditioner, the real-time changes of the outdoor coil temperature, the outdoor ambient temperature, the indoor coil temperature and the indoor ambient temperature can be determined. By obtaining the duration of the defrost process, it can be determined whether the frosting condition is serious when the air conditioner enters the defrost state. According to the temperature parameters and the duration of the defrost process, it can be determined whether the defrost process of the air conditioner outdoor unit last time was a frost-free defrost, that is, whether the actual frosting condition of the air conditioner outdoor unit before the last defrost is necessary for defrosting. If it is determined that the air conditioner's last defrost process was a frost-free defrost, that is, the defrost compensation condition is met, then the defrost temperature threshold used in the defrost start judgment condition is controlled to be reduced, and / or the defrost temperature difference threshold used in the defrost start judgment condition is controlled to be increased. In this way, the defrost start judgment condition of the air conditioner can be made more stringent in the subsequent process, reducing the possibility of frost-free defrosting of the air conditioner, thereby avoiding energy waste and affecting the heating effect of the air conditioner, thereby improving the user experience.

[0054] Optionally, the defrost compensation condition may include:

[0055] The duration is not greater than a defrost duration threshold corresponding to the outdoor ambient temperature, and the change in indoor coil temperature is not greater than an indoor coil temperature difference threshold corresponding to the indoor ambient temperature.

[0056] The change in indoor coil temperature is the difference between the indoor coil temperature at a preset time before the air conditioner defrost is turned on and the indoor coil temperature at the time the air conditioner defrost is turned on. For example, the indoor coil temperature at the preset time can be set to the indoor coil temperature 10 minutes before the air conditioner defrost is turned on.

[0057] Specifically, the duration is not greater than a defrost duration threshold corresponding to the outdoor ambient temperature, which may include:

[0058] The outdoor ambient temperature is greater than or equal to the first temperature threshold, and the defrost duration is not greater than the first defrost duration threshold; or

[0059] The outdoor ambient temperature is greater than or equal to the second temperature threshold and less than the first temperature threshold, and the defrost duration is not greater than the second defrost duration threshold; or

[0060] The outdoor ambient temperature is greater than or equal to the third temperature threshold and less than the second temperature threshold, and the defrost duration is not greater than the third defrost duration threshold; or

[0061] The outdoor ambient temperature is lower than the third temperature threshold, and the defrost duration is no longer than the fourth defrost duration threshold.

[0062] There is a negative correlation between the outdoor ambient temperature and the defrost duration threshold. The first temperature threshold is greater than the second temperature threshold, and the second temperature threshold is greater than the third temperature threshold.

[0063] For example, the first temperature threshold may be preset, for example, to 0° C., the second temperature threshold may be preset, for example, to -5° C., and the third temperature threshold may be preset, for example, to -10° C. The defrost duration thresholds include a first defrost duration threshold having a value range of 3 minutes to 4 minutes, a second defrost duration threshold having a value range of 3.5 minutes to 4.5 minutes, a third defrost duration threshold having a value range of 4 minutes to 5 minutes, and a fourth defrost duration threshold having a value range of 4.5 minutes to 5.5 minutes.

[0064] Specifically, the change in the indoor coil temperature is not greater than the indoor coil temperature difference threshold corresponding to the indoor ambient temperature, which may include:

[0065] The indoor ambient temperature is greater than or equal to the fourth temperature threshold, and the change in the indoor coil temperature is not greater than the first indoor coil temperature difference threshold; or

[0066] The indoor ambient temperature is greater than or equal to the fifth temperature threshold and less than the fourth temperature threshold, and the change in the indoor coil temperature is not greater than the second indoor coil temperature difference threshold; or

[0067] The indoor ambient temperature is greater than or equal to the sixth temperature threshold and less than the fifth temperature threshold, and the change in the indoor coil temperature is not greater than the third indoor coil temperature difference threshold; or

[0068] The indoor ambient temperature is lower than the sixth temperature threshold, and the change in the indoor coil temperature is no greater than the fourth indoor coil temperature difference threshold.

[0069] The fourth temperature threshold is greater than the fifth temperature threshold, the fifth temperature threshold is greater than the sixth temperature threshold, and the sixth temperature threshold is greater than the first temperature threshold; the first indoor coil temperature difference threshold is greater than the second indoor coil temperature difference threshold, the second indoor coil temperature difference threshold is greater than the third indoor coil temperature difference threshold, and the third indoor coil temperature difference threshold is greater than the fourth indoor coil temperature difference threshold. There is a positive correlation between the indoor ambient temperature and the indoor coil temperature difference thresholds.

[0070] For example, the fourth temperature threshold may be preset, for example, to 20° C., the fifth temperature threshold may be preset, for example, to 15° C., and the sixth temperature threshold may be preset, for example, to 10° C. The first indoor coil temperature difference threshold included in the indoor coil temperature difference threshold may be preset, for example, to 3° C., the second indoor coil temperature difference threshold included in the indoor coil temperature difference threshold may be preset, for example, to 2° C., the third indoor coil temperature difference threshold included in the indoor coil temperature difference threshold may be preset, for example, to 1.5° C., and the fourth indoor coil temperature difference threshold included in the indoor coil temperature difference threshold may be preset, for example, to 1° C.

[0071] In this way, different outdoor ambient temperatures correspond to different defrost process duration thresholds, and different indoor ambient temperatures correspond to different indoor coil temperature difference thresholds, which can make the set defrost compensation conditions more accurate, so as to accurately judge whether the last defrost process of the air-conditioning outdoor unit was frost-free defrost, that is, accurately judge whether the actual frost situation of the air-conditioning outdoor unit before the last defrost is necessary for defrosting, thereby avoiding erroneous changes in the defrost temperature threshold and / or the defrost temperature difference threshold.

[0072] Optionally, the defrost compensation condition may further include:

[0073] The cumulative decrease in the defrost temperature threshold does not reach a preset total decrease, and / or the cumulative increase in the defrost temperature difference threshold does not reach a preset total increase.

[0074] For example, the preset total decrement can be pre-set, and its value range can be 1.5°C to 2°C; the preset total increment can also be pre-set, and its value range can be 1.5°C to 2°C. In this way, by setting the preset total increment and the preset total decrement, excessive changes in the defrost temperature threshold and the defrost temperature difference threshold can be avoided, thereby ensuring the stability of the air conditioner operation.

[0075] Optionally, in S103, controlling to reduce the defrost temperature threshold used in the defrost start judgment condition, and / or controlling to increase the defrost temperature difference threshold used in the defrost start judgment condition may include:

[0076] reducing the defrost temperature threshold by a target reduction amount; and / or,

[0077] Increase the defrost temperature difference threshold by the target increase amount.

[0078] For example, the numerical values ​​corresponding to the target decrease amount and / or the target increase amount can be preset, and the numerical values ​​can range from 0.3° C. to 0.5° C. Taking the control of increasing the defrost temperature difference threshold as an example, if after the defrost temperature difference threshold is controlled to increase according to the target increase amount multiple times, the cumulative change of the current defrost temperature difference threshold does not reach the preset total increase, but if it continues to increase according to the target increase amount, the cumulative change of the defrost temperature difference threshold will exceed the preset total increase. To prevent the cumulative increase from exceeding the preset total increase, a new target increase amount can be determined based on the preset total increase and the current cumulative increase amount.

[0079] Optionally, the air conditioner defrost control method provided by the present disclosure may further include:

[0080] After the air conditioner enters the heating mode, in response to determining that the defrost start judgment condition is met, the air conditioner is controlled to start defrost.

[0081] For example, the defrost start judgment condition can be preset:

[0082] The outdoor ambient temperature is greater than or equal to the first temperature threshold, and the duration during which the outdoor coil temperature is not greater than the first defrost temperature threshold reaches a fifth duration threshold; or

[0083] The outdoor ambient temperature is greater than or equal to the second temperature threshold and less than the first temperature threshold, the duration of the outdoor coil temperature not exceeding the second defrost temperature threshold reaches the fifth duration threshold, and the duration of the difference between the outdoor ambient temperature and the outdoor coil temperature not less than the first defrost temperature difference threshold reaches the fifth duration threshold; or

[0084] The outdoor ambient temperature is greater than or equal to the third temperature threshold and less than the second temperature threshold, the duration for which the outdoor coil temperature is not greater than the third defrost temperature threshold reaches a fifth duration threshold, and the duration for which the difference between the outdoor ambient temperature and the outdoor coil temperature is not less than the second defrost temperature difference threshold reaches a fifth duration threshold; or

[0085] The outdoor ambient temperature is lower than the third temperature threshold, the duration for which the outdoor coil temperature is not higher than the fourth defrost temperature threshold reaches the fifth duration threshold, and the duration for which the difference between the outdoor ambient temperature and the outdoor coil temperature is not lower than the third defrost temperature difference threshold reaches the fifth duration threshold.

[0086] For example, the fifth time threshold can be pre-set, for example, can be set to 3 minutes. The first defrost temperature threshold, the second defrost temperature threshold, the third defrost temperature threshold, the fourth defrost temperature threshold, the first defrost temperature difference threshold, the second defrost temperature difference threshold, and the third defrost temperature difference threshold can be pre-calibrated according to an air conditioning operation test.

[0087] The defrost start judgment conditions can be specifically:

[0088] When the outdoor ambient temperature is ≥ 0°C, the outdoor coil temperature is ≤ the first defrost temperature threshold for 3 minutes; or

[0089] When the outdoor ambient temperature is -5°C ≤ outdoor ambient temperature < 0°C, the outdoor coil temperature is ≤ the second defrost temperature threshold for a duration of 3 minutes, and the outdoor ambient temperature - outdoor coil temperature is ≥ the first defrost temperature difference threshold for a duration of 3 minutes; or

[0090] When the outdoor ambient temperature is -10°C ≤ outdoor ambient temperature < -5°C, the outdoor coil temperature is ≤ the third defrost temperature threshold for a duration of 3 minutes, and the outdoor ambient temperature - outdoor coil temperature is ≥ the second defrost temperature difference threshold for a duration of 3 minutes; or

[0091] When the outdoor ambient temperature is less than -10°C, the duration of the outdoor coil temperature ≤ the fourth defrost temperature threshold reaches 3 minutes, and the duration of the outdoor ambient temperature - outdoor coil temperature ≥ the third defrost temperature difference threshold reaches 3 minutes.

[0092] When the duration of the outdoor coil temperature not exceeding the defrost temperature threshold corresponding to the current outdoor ambient temperature reaches the fifth duration threshold, and the duration of the difference between the outdoor ambient temperature and the outdoor coil temperature not exceeding the defrost temperature difference threshold corresponding to the current outdoor ambient temperature reaches the fifth duration threshold, it can be determined that the air conditioner is currently in a stable operating state, and the defrost of the air conditioner can be turned on under the stable operating state.

[0093] Optionally, the air conditioner defrost control method provided by the present disclosure may further include:

[0094] In response to the air conditioner exiting the heating mode, a defrost start judgment condition is initialized.

[0095] In this way, the defrost start judgment conditions can be initialized so that the defrost temperature threshold and defrost temperature difference threshold used in the defrost start judgment conditions are restored to the default values ​​to adapt to different weather conditions and avoid making the air conditioner's defrost start judgment conditions too strict so that the air conditioner cannot start defrosting.

[0096] Based on the same inventive concept, the present disclosure also provides an air conditioner defrost control device. Figure 2 FIG. 2 is a block diagram of an air conditioner defrost control device 200 provided by an exemplary embodiment of the present disclosure. Figure 2 The air conditioner defrost control device 200 may include:

[0097] A monitoring module 201 is configured to monitor temperature parameters related to the operation of the air conditioner, wherein the temperature parameters include outdoor coil temperature, outdoor ambient temperature, indoor coil temperature, and indoor ambient temperature;

[0098] An acquisition module 202 is configured to acquire a duration of the defrosting process in response to the air conditioner defrosting being completed;

[0099] The first control module 203 is used to control the reduction of the defrost temperature threshold used in the defrost start judgment condition in response to determining that the defrost compensation condition is met based on the duration and the temperature parameter, and / or to control the increase of the defrost temperature difference threshold used in the defrost start judgment condition, the defrost temperature threshold represents the temperature that the outdoor coil temperature required to start defrost cannot be higher than, and the defrost temperature difference threshold represents the temperature difference that the difference between the outdoor ambient temperature required to start defrost and the outdoor coil temperature cannot be lower than.

[0100] By monitoring the temperature parameters related to the operation of the air conditioner, the real-time changes of the outdoor coil temperature, the outdoor ambient temperature, the indoor coil temperature and the indoor ambient temperature can be determined. By obtaining the duration of the defrost process, it can be determined whether the frosting condition is serious when the air conditioner enters the defrost state. According to the temperature parameters and the duration of the defrost process, it can be determined whether the defrost process of the air conditioner outdoor unit last time was a frost-free defrost, that is, whether the actual frosting condition of the air conditioner outdoor unit before the last defrost is necessary for defrosting. If it is determined that the air conditioner's last defrost process was a frost-free defrost, that is, the defrost compensation condition is met, then the defrost temperature threshold used in the defrost start judgment condition is controlled to be reduced, and / or the defrost temperature difference threshold used in the defrost start judgment condition is controlled to be increased. In this way, the defrost start judgment condition of the air conditioner can be made more stringent in the subsequent process, reducing the possibility of frost-free defrosting of the air conditioner, thereby avoiding energy waste and affecting the heating effect of the air conditioner, thereby improving the user experience.

[0101] Optionally, the defrost compensation conditions include:

[0102] The duration is not greater than a defrost duration threshold corresponding to the outdoor ambient temperature, and the change in the indoor coil temperature is not greater than an indoor coil temperature difference threshold corresponding to the indoor ambient temperature, wherein the change in the indoor coil temperature is a difference between the indoor coil temperature corresponding to a preset time before the air conditioner defrost is turned on and the indoor coil temperature corresponding to the time when the air conditioner defrost is turned on.

[0103] Optionally, the defrost compensation condition also includes:

[0104] The cumulative decrease in the defrost temperature threshold does not reach a preset total decrease, and / or the cumulative increase in the defrost temperature difference threshold does not reach a preset total increase.

[0105] Optionally, there is a negative correlation between the outdoor ambient temperature and the defrost duration threshold.

[0106] Optionally, there is a positive correlation between the indoor ambient temperature and the indoor coil temperature difference threshold.

[0107] Optionally, the first control module 203 is further configured to reduce the defrost temperature threshold by a target reduction amount; and / or increase the defrost temperature difference threshold by a target increase amount.

[0108] Optionally, the air conditioner defrost control device 200 further includes:

[0109] The second control module is configured to control the air conditioner to start defrosting in response to determining that the defrost start judgment condition is met after the air conditioner enters the heating mode.

[0110] Optionally, the air conditioner defrost control device 200 further includes:

[0111] An initialization module is configured to initialize the defrost start judgment condition in response to the air conditioner exiting the heating mode.

[0112] Regarding the apparatus in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0113] The present disclosure also provides a computer-readable storage medium having computer program instructions stored thereon. When the program instructions are executed by a processor, the steps of the air conditioner defrost control method provided by the present disclosure are implemented.

[0114] Figure 3 FIG. 8 is a block diagram of an air conditioner 800 according to an exemplary embodiment. Figure 3The air conditioner 800 may include one or more of the following components: a processing component 802 , a memory 804 , a power component 806 , a multimedia component 808 , an audio component 810 , an input / output interface 812 , a sensor component 814 , and a communication component 816 .

[0115] The processing component 802 generally controls the overall operation of the air conditioner 800, such as operations associated with display, phone calls, data communications, camera operation, and recording. The processing component 802 may include one or more processors 820 to execute instructions to perform all or part of the steps of the air conditioner defrost control method described above. Furthermore, the processing component 802 may include one or more modules to facilitate interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

[0116] The memory 804 is configured to store various types of data to support the operation of the air conditioner 800. Examples of such data include instructions for any application or method operating on the air conditioner 800. The memory 804 can be implemented by any type of volatile or non-volatile storage device, 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 memory, flash memory, magnetic disk, or optical disk.

[0117] The power supply assembly 806 provides power to the various components of the air conditioner 800. The power supply assembly 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to the air conditioner 800.

[0118] The multimedia component 808 includes a screen that provides an output interface between the air conditioner 800 and the user. In some embodiments, the screen may include 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 the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor can not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation.

[0119] The audio component 810 is configured to output and / or input audio signals. For example, the audio component 810 includes a microphone (MIC), which is configured to receive external audio signals when the air conditioner 800 is in an operating 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 also includes a speaker for outputting audio signals.

[0120] The input / output interface 812 provides an interface between the processing component 802 and peripheral interface modules, such as a keyboard, a click wheel, buttons, etc. These buttons may include but are not limited to: a home button, a volume button, a start button, and a lock button.

[0121] The sensor assembly 814 includes one or more sensors for providing various aspects of the status assessment for the air conditioner 800. For example, the sensor assembly 814 can detect the on / off state of the air conditioner 800, the relative positioning of components, such as the display and keypad of the air conditioner 800. The sensor assembly 814 can also detect changes in the position of the air conditioner 800 or a component of the air conditioner 800, the presence or absence of user contact with the air conditioner 800, the orientation or acceleration / deceleration of the air conditioner 800, and temperature changes of the air conditioner 800. The sensor assembly 814 can include a proximity sensor configured to detect the presence of nearby objects without any physical contact. The sensor assembly 814 can also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 can also include an accelerometer, a gyroscope, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0122] 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.

[0123] In an exemplary embodiment, the air conditioner 800 can be implemented by 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, microcontrollers, microprocessors or other electronic components to perform the above-mentioned air conditioner defrost control method.

[0124] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 804 including instructions. The instructions can be executed by the processor 820 of the air conditioner 800 to implement the air conditioner defrost control method described above. 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 disk, an optical data storage device, etc.

[0125] In another exemplary embodiment, a computer program product is further provided. The computer program product includes a computer program that can be executed by a programmable device. The computer program has a code portion for executing the above air conditioner defrost control method when executed by the programmable device.

[0126] Other embodiments of the present disclosure will readily occur to those skilled in the art after considering the specification and practicing the present disclosure. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0127] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An air conditioner defrosting control method, characterized in that: The method comprises: Monitoring temperature parameters related to the operation of the air conditioner, wherein the temperature parameters include outdoor coil temperature, outdoor ambient temperature, indoor coil temperature and indoor ambient temperature; In response to the air conditioner defrosting being completed, obtaining the duration of the defrosting process; In response to determining that the defrost compensation condition is met according to the duration and the temperature parameter, the defrost temperature threshold used in the defrost start judgment condition is controlled to be reduced, and / or the defrost temperature difference threshold used in the defrost start judgment condition is controlled to be increased, the defrost temperature threshold represents the temperature that the outdoor coil temperature required to start the defrost cannot be higher than, and the defrost temperature difference threshold represents the temperature difference that the difference between the outdoor ambient temperature and the outdoor coil temperature required to start the defrost cannot be lower than; The defrost compensation conditions include: The duration is not greater than a defrost duration threshold corresponding to the outdoor ambient temperature, and the change in the indoor coil temperature is not greater than an indoor coil temperature difference threshold corresponding to the indoor ambient temperature, wherein the change in the indoor coil temperature is a difference between the indoor coil temperature corresponding to a preset time before the air conditioner defrost is turned on and the indoor coil temperature corresponding to the time when the air conditioner defrost is turned on.

2. The method according to claim 1, characterized in that The defrost compensation conditions also include: The cumulative decrease of the defrost temperature threshold value does not reach a preset total decrease, and / or the cumulative increase of the defrost temperature difference threshold value does not reach a preset total increase.

3. The method according to claim 1, characterized in that There is a negative correlation between the outdoor ambient temperature and the defrosting duration threshold.

4. The method according to claim 1, characterized in that There is a positive correlation between the indoor ambient temperature and the indoor coil temperature difference threshold.

5. The method according to claim 1, characterized in that The controlling of reducing the defrost temperature threshold used in the defrost start judgment condition, and / or controlling of increasing the defrost temperature difference threshold used in the defrost start judgment condition, includes: reducing the defrost temperature threshold by a target reduction amount; and / or, The defrost temperature difference threshold is increased by a target increase amount.

6. The method according to claim 1, characterized in that The method further comprises: After the air conditioner enters a heating mode, in response to determining that the defrost start judgment condition is met, the air conditioner is controlled to start defrosting.

7. The method according to claim 1, characterized in that The method further comprises: In response to the air conditioner exiting the heating mode, the defrost start judgment condition is initialized.

8. An air conditioner defrost control device, characterized in that: include: A monitoring module, used for monitoring temperature parameters related to the operation of the air conditioner, wherein the temperature parameters include outdoor coil temperature, outdoor ambient temperature, indoor coil temperature and indoor ambient temperature; An acquisition module, used for acquiring the duration of the defrosting process in response to the end of defrosting of the air conditioner; a first control module, for, in response to determining that a defrost compensation condition is satisfied according to the duration and the temperature parameter, controlling to reduce a defrost temperature threshold used in a defrost start judgment condition, and / or controlling to increase a defrost temperature difference threshold used in a defrost start judgment condition, wherein the defrost temperature threshold represents a temperature that the outdoor coil temperature required to start defrost cannot be higher than, and the defrost temperature difference threshold represents a temperature difference that the difference between the outdoor ambient temperature and the outdoor coil temperature required to start defrost cannot be lower than; Among them, the defrost compensation conditions include: The duration is not greater than a defrost duration threshold corresponding to the outdoor ambient temperature, and the change in the indoor coil temperature is not greater than an indoor coil temperature difference threshold corresponding to the indoor ambient temperature, wherein the change in the indoor coil temperature is a difference between the indoor coil temperature corresponding to a preset time before the air conditioner defrost is turned on and the indoor coil temperature corresponding to the time when the air conditioner defrost is turned on.

9. An air conditioner, characterized in that: include: processor; a memory for storing processor-executable instructions; The processor is configured to execute the method according to any one of claims 1 to 7.

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

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