Air conditioner control method, device, equipment and storage medium

Abstract

The present invention discloses an air conditioner control method, device, equipment and storage medium, which relate to the field of air conditioning technology. The method includes: obtaining operating parameters and defrost control parameters of the air conditioner during a historical defrost cycle; determining the heating capacity change trend of the air conditioner based on the operating parameters; when the heating capacity change trend is a decreasing trend, compensating the defrost control parameters so that the air conditioner performs a defrost operation based on the compensated defrost control parameters. The change in the heating capacity of the air conditioner is determined based on the historical defrost data of the air conditioner. If the heating capacity of the air conditioner decreases, it indicates that the outdoor unit has an incomplete defrost problem. At this time, by compensating the defrost control parameters in the historical defrost data, a higher defrost capacity is obtained, so that the air conditioner can perform a more thorough defrost the next time it performs a defrost operation.

Description

Technical Field

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

[0002] When an air conditioner is heating in a low-temperature environment, frost easily forms both indoors and outdoors. To prevent frost from affecting the heating effect, the air conditioner needs to be defrosted after a period of operation. However, existing defrost operations only control a single defrost cycle, ignoring the fact that during long-term operation, environmental changes can cause incomplete defrosting. This accumulation of frost over time can lead to ice formation on the outdoor unit. Therefore, how to more thoroughly defrost the air conditioner is a pressing technical issue. Summary of the Invention

[0003] The main purpose of the present invention is to provide an air conditioner control method, device, equipment and storage medium, aiming to solve the technical problem of incomplete defrosting of air conditioners in the prior art.

[0004] To achieve the above object, the present invention provides an air conditioner control method, which includes the following steps:

[0005] Obtain the operating parameters and defrost control parameters of the air conditioner during the historical defrost cycle;

[0006] Determine the heating capacity change trend of the air conditioner based on the operating parameters; and

[0007] When the heating amount change trend is a decreasing trend, the defrost control parameter is compensated so that the air conditioner performs a defrost operation according to the compensated defrost control parameter.

[0008] Optionally, the operating parameters include the indoor unit coil temperature. The heating capacity change trend of the air conditioner is determined based on the operating parameters, including:

[0009] The heating capacity change trend of the air conditioner is determined according to the indoor unit coil temperature change trend corresponding to each historical defrost cycle.

[0010] Optionally, determining a heating amount change trend of the air conditioner based on a change trend of the indoor unit coil temperature corresponding to each historical defrost cycle includes:

[0011] When the historical coil temperatures corresponding to three consecutive historical defrost cycles decrease in sequence, it is determined that the heating amount change trend of the air conditioner is a decreasing trend.

[0012] Optionally, obtain the operating parameters of the air conditioner during historical defrost cycles, including:

[0013] Obtaining a set of indoor unit coil temperatures of the air conditioner within a preset time period of each historical defrost cycle; and

[0014] The average temperature corresponding to the set of indoor unit coil temperatures is determined, and the average temperature is used as the indoor unit coil temperature corresponding to each historical defrost cycle.

[0015] Optionally, the defrost control parameter includes a defrost time, and compensating the defrost control parameter so that the air conditioner performs a defrost operation according to the compensated defrost control parameter includes:

[0016] The defrost time is compensated according to the preset compensation time, so that the air conditioner performs the defrost operation according to the compensated defrost time.

[0017] Optionally, compensating the defrost time according to a preset compensation time so that the air conditioner performs a defrost operation according to the compensated defrost time includes:

[0018] Determine the maximum defrost time within the defrost time corresponding to each historical defrost cycle; and

[0019] The maximum defrost time is added to the preset compensation time to obtain a target defrost time, so that the air conditioner performs a defrost operation according to the target defrost time.

[0020] Optionally, obtain the operating parameters and defrost control parameters of the air conditioner during the historical defrost cycle, including:

[0021] Get the current windshield level of the air conditioner;

[0022] Taking the historical defrost cycle with the same windshield level as the current windshield level as the reference defrost cycle; and

[0023] Get the operating parameters and defrost control parameters corresponding to the reference defrost cycle.

[0024] In addition, to achieve the above-mentioned object, the present invention further provides an air conditioner control device, the air conditioner control device comprising:

[0025] An acquisition module is used to obtain the operating parameters and defrost control parameters of the air conditioner in the historical defrost cycle;

[0026] A judgment module is used to determine the heating amount change trend of the air conditioner according to the operating parameters; and

[0027] The control module is used to compensate the defrost control parameters when the heating amount change trend is a decreasing trend, so that the air conditioner performs a defrost operation according to the compensated defrost control parameters.

[0028] In addition, to achieve the above-mentioned purpose, the present invention also proposes an air conditioner control device, which includes: a memory, a processor, and an air conditioner control program stored in the memory and runnable on the processor. When the air conditioner control program is executed by the processor, the air conditioner control method as described above is implemented.

[0029] In addition, to achieve the above-mentioned purpose, the present invention further proposes a storage medium on which an air conditioner control program is stored. When the air conditioner control program is executed by a processor, the air conditioner control method as described above is implemented.

[0030] In this invention, changes in the air conditioner's heating capacity are determined based on the air conditioner's historical defrost data. If the air conditioner's heating capacity decreases, it indicates that the outdoor unit is not defrosting completely. In this case, the defrost control parameters in the historical defrost data are compensated to achieve a higher defrost capacity, allowing the air conditioner to defrost more thoroughly the next time it performs a defrost operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 1 is a schematic structural diagram of an air conditioner control device in a hardware operating environment according to an embodiment of the present invention;

[0032] Figure 2 1 is a flow chart of a first embodiment of an air conditioner control method according to the present invention;

[0033] Figure 3 1. It is a flow chart of a second embodiment of the air conditioner control method of the present invention;

[0034] Figure 4 1. It is a flow chart of a third embodiment of the air conditioner control method of the present invention;

[0035] Figure 5 1. It is a flowchart of a fourth embodiment of the air conditioner control method of the present invention;

[0036] Figure 6 FIG. 1 is a structural block diagram of a first embodiment of an air conditioner control device according to the present invention.

[0037] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0038] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0039] Reference Figure 1 , Figure 1 This is a schematic diagram of the structure of an air conditioner control device in the hardware operating environment involved in the embodiment of the present invention.

[0040] like Figure 1As shown, the air conditioner control device may include: a processor 1001, such as a central processing unit (CPU), a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display). Optionally, the user interface 1003 may also include a standard wired interface or a wireless interface. The wired interface of the user interface 1003 may be a USB interface in the present invention. The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a wireless fidelity (Wi-Fi) interface). The memory 1005 may be a high-speed random access memory (RAM) memory or a stable memory (NVM), such as a disk memory. The memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0041] Those skilled in the art will understand that Figure 1 The structure shown in the figure does not constitute a limitation on the air conditioner control device, and may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently.

[0042] like Figure 1 As shown, the memory 1005 identified as a computer storage medium may include an operating system, a network communication module, a user interface module, and an air conditioner control program.

[0043] exist Figure 1 In the air conditioner control device shown, the network interface 1004 is mainly used to connect to the background server and communicate data with the background server; the user interface 1003 is mainly used to connect to the user device; the air conditioner control device calls the air conditioner control program stored in the memory 1005 through the processor 1001, and executes the air conditioner control method provided by the embodiment of the present invention.

[0044] Based on the above hardware structure, an embodiment of the air conditioner control method of the present invention is proposed.

[0045] Reference Figure 2 , Figure 2 FIG1 is a flow chart of a first embodiment of an air conditioner control method according to the present invention, and provides a first embodiment of an air conditioner control method according to the present invention.

[0046] In a first embodiment, the air conditioner control method includes the following steps:

[0047] Step S10: Acquire the operating parameters and defrost control parameters of the air conditioner in the historical defrost cycle.

[0048] It should be understood that the executing entity of this embodiment is an air conditioner control device, which has functions such as data processing, data communication and program running. The air conditioner control device can be a server or an integrated controller and other devices. Of course, it can also be other devices with similar functions. This embodiment does not limit this.

[0049] It should be noted that the historical defrost cycle refers to the time period corresponding to the defrost operation performed by the air conditioner in the past period when the air conditioner control device executes the air conditioner control method in this embodiment. Generally, a defrost cycle includes a defrost detection time period and a defrost execution time period. During the defrost detection time period, the air conditioner control device can detect the operating status of the air conditioner, such as parameters such as compressor frequency, coil temperature, or air outlet temperature, and the detected parameters can be used as operating parameters; during the defrost execution time period, the air conditioner control device can control the air conditioner to perform a defrost mode, usually by adjusting the connectivity state of the four-way valve corresponding to the compressor to allow high-temperature refrigerant to enter the evaporator, and by increasing the temperature of the evaporator to eliminate the frost layer on the evaporator surface; wherein, the temperature of the refrigerant or the duration of the defrost mode can be used as a defrost control parameter.

[0050] In a specific implementation, the air conditioner control device executes the air conditioner control method of this embodiment each time the air conditioner exits defrost mode to analyze historical defrost cycles and determine the defrost status of the air conditioner. The air conditioner control device can store the detected operating parameters and defrost control parameters in a preset memory, and then retrieve the operating parameters and defrost control parameters of the historical defrost cycles by reading the memory.

[0051] Step S20: determining a heating amount change trend of the air conditioner according to the operating parameters.

[0052] It is understandable that the logic for air conditioners to determine defrost is usually based on the coil temperature of the outdoor unit heat exchanger. When the coil temperature is low, it indicates that there is a defrost risk, and the air conditioner needs to be put into defrost mode. However, the defrost risk of the same coil temperature varies at different outdoor temperatures. For example, if the coil temperature is 1 degree Celsius, the defrost risk in an outdoor environment of -2°C is different from that in an outdoor environment of 0°C. Obviously, frost is more likely to form in an outdoor environment of -2°C, and the frost layer is thicker. Therefore, if the same defrost mode is used as in an outdoor environment of 0°C, there may be problems with incomplete defrosting, and the outdoor unit may quickly frost again or even freeze.

[0053] In this embodiment, to address the issue of incomplete defrosting, the defrost status of the air conditioner is determined by analyzing the changing trend of the air conditioner's heating capacity. If the outdoor unit is incompletely defrosted, this will affect the outdoor unit's ability to absorb heat from the outside, thereby affecting the indoor unit's heating capacity. If the air conditioner's heating capacity gradually decreases, this indicates incomplete defrosting. If the air conditioner's heating capacity remains unchanged, this indicates complete defrosting.

[0054] It should be noted that operating parameters include parameters of the air conditioner over multiple historical defrost cycles. By comparing the operating parameters of each cycle, the heating capacity trend of the air conditioner can be determined. For example, if the operating parameter is room temperature, as the room temperature gradually decreases from the current time, it can be determined that the heating capacity of the air conditioner is decreasing, showing a decreasing trend.

[0055] Step S30: When the heating amount variation trend is a decreasing trend, the defrost control parameter is compensated so that the air conditioner performs a defrost operation according to the compensated defrost control parameter.

[0056] It is understandable that if the heating amount shows a decreasing trend, it indicates that the outdoor unit is experiencing an incomplete defrost problem. In order to perform a more thorough defrost, the defrost effect needs to be improved. Specifically, the defrost control parameters can be compensated to achieve a higher defrost capacity than the historical defrost operation. For example, the defrost control parameters may include the refrigerant temperature. If the refrigerant temperature during the historical defrost cycle was 20°C, it can be compensated to 25°C or 30°C. By increasing the compressor frequency or the refrigerant temperature, the defrost effect can be improved. The specific compensation amount can be set according to user needs and is not limited in this embodiment.

[0057] It should be noted that after determining the compensated defrost control parameters, the air conditioner control device still needs to perform defrost detection to determine whether defrost is required. If defrost is required, the defrost operation is performed according to the compensated defrost control parameters. If not, the current state of the air conditioner remains unchanged. Specifically, defrost detection and defrost operation are mature technologies and will not be described in detail in this embodiment.

[0058] In the first embodiment, changes in the air conditioner's heating capacity are determined based on the air conditioner's historical defrost data. If the air conditioner's heating capacity decreases, this indicates that the outdoor unit is experiencing incomplete defrosting. In this case, the defrost control parameters in the historical defrost data are compensated to achieve a higher defrost capacity, allowing the air conditioner to defrost more thoroughly the next time it performs a defrost operation.

[0059] Reference Figure 3 , Figure 3 1 is a flow chart of a second embodiment of an air conditioner control method according to the present invention. Based on the above-mentioned first embodiment, the second embodiment of the air conditioner control method according to the present invention is proposed.

[0060] In the second embodiment, to more accurately determine the heating capacity variation trend of the air conditioner, the operating parameters may include the indoor unit coil temperature. Step S20 may include:

[0061] Step S201: determining a heating amount change trend of the air conditioner according to a temperature change trend of the indoor unit coil corresponding to each historical defrost cycle.

[0062] It's understandable that the higher the indoor coil temperature, the higher the air conditioner's heating capacity, and the lower the indoor coil temperature, the lower the air conditioner's heating capacity. Therefore, the heating capacity trend of the air conditioner can be determined based on the indoor coil temperature trend. If the indoor coil temperature trend is decreasing, the air conditioner's heating capacity will also be decreasing; if the indoor coil temperature trend is increasing, the air conditioner's heating capacity will also be increasing.

[0063] In the specific implementation, in order to improve the accuracy of the judgment, the number of historical defrost cycles can be three or more. If the historical coil temperatures corresponding to three consecutive historical defrost cycles decrease successively, it is determined that the heating amount change trend of the air conditioner is a decreasing trend; if the historical coil temperatures corresponding to three consecutive historical defrost cycles increase successively, it is determined that the heating amount change trend of the air conditioner is an increasing trend; if the historical coil temperatures corresponding to three consecutive historical defrost cycles increase and decrease, it is determined that the heating amount change trend of the air conditioner is an uncertain state and needs to be tested.

[0064] For example, K1, K2, and K3 represent three consecutive cycles from the current time, starting from the longest to the most recent. TK1 represents the indoor unit coil temperature corresponding to K1, TK2 represents the indoor unit coil temperature corresponding to K2, and TK3 represents the indoor unit coil temperature corresponding to K3. If K1 > K2 > K3, the air conditioner's heating capacity trend is determined to be decreasing. Alternatively, ΔK1 = K2 - K1 and ΔK2 = K3 - K2. If ΔK1 < 0 and ΔK2 < 0, the air conditioner's heating capacity trend is determined to be decreasing.

[0065] Furthermore, in order to ensure that the collected historical coil temperatures are more accurate, this embodiment may include, when obtaining the historical coil temperatures: obtaining the indoor unit coil temperature set of the air conditioner within a preset time period of each historical defrost cycle; determining the average temperature corresponding to each indoor unit coil temperature set, and using the average temperature as the indoor unit coil temperature corresponding to each historical defrost cycle.

[0066] It should be noted that the indoor unit coil temperature refers to the coil temperature of the indoor unit heat exchanger. The indoor unit heat exchanger is equipped with a temperature sensor that collects the coil temperature of the heat exchanger in real time or intermittently. The temperature sensor generally collects the coil temperature when the air conditioner is in heating mode and not in defrost mode. In other words, the temperature sensor collects the temperature during the defrost detection period within a defrost cycle, which can be the period when the air conditioner is in stable operation.

[0067] In specific implementation, the number of temperature sensors installed on the heat exchanger can be one or more. The temperature sensor can collect multiple temperature data in each defrost cycle to form a temperature set; then the average value corresponding to each temperature set is used as the indoor unit coil temperature corresponding to each defrost cycle.

[0068] In a second embodiment, the operating parameters may include the indoor unit coil temperature. The indoor unit coil temperature can be obtained by a temperature sensor installed on the indoor unit heat exchanger. By judging the indoor unit coil temperature in multiple consecutive cycles, the heating capacity change trend of the air conditioner can be determined more accurately.

[0069] Reference Figure 4 , Figure 4 This is a flow chart of a third embodiment of an air conditioner control method according to the present invention. Based on the first and second embodiments described above, the third embodiment of the air conditioner control method according to the present invention is proposed.

[0070] In the third embodiment, in order to more effectively improve the defrosting effect, the defrosting control parameters include the defrosting time, and step S30 may include:

[0071] Step S301: When the heating amount variation trend is a decreasing trend, the defrost time is compensated according to a preset compensation time, so that the air conditioner performs a defrost operation according to the compensated defrost time.

[0072] It should be noted that this embodiment mainly improves the defrost effect by extending the defrost time, and can be applied to fixed-speed air conditioners. Since the compressor of a fixed-speed air conditioner cannot adjust the frequency and therefore the refrigerant temperature, the defrost capacity can be adjusted by adjusting the defrost time.

[0073] In a specific implementation, the preset compensation time is a user-set duration. The defrost time is compensated by adding the preset compensation time to the defrost time. The defrost time may be the defrost time within the most recent historical defrost cycle. The specific value of the preset compensation time can be set based on user needs and is not limited in this embodiment.

[0074] In this embodiment, in order to further effectively improve the defrost effect, the maximum defrost time within the defrost time corresponding to each historical defrost cycle can be first determined; then the maximum defrost time is added to the preset compensation time to obtain the target defrost time, so that the air conditioner performs the defrost operation according to the target defrost time.

[0075] It's understandable that a longer defrost time results in a more thorough defrost. Therefore, in this embodiment, the compensation time is added to the maximum defrost time in each historical defrost cycle to achieve a more thorough defrost. For example, K1, K2, and K3 represent three consecutive cycles from oldest to most recent since the current time. tK1 represents the defrost time corresponding to K1, tK2 represents the defrost time corresponding to K2, and tK3 represents the defrost time corresponding to K3. Then, the maximum defrost time tmaxK = max{tK1, tK2, tK3}, and the target defrost time t = tmaxK + td, where td is the preset compensation time. The next time the air conditioner enters defrost mode, the defrost duration will be the target defrost time.

[0076] In the third embodiment, the defrost time of the air conditioner is compensated to improve the defrost capacity and completely eliminate the frost layer. This method has wider application. At the same time, the defrost time is taken from the maximum frost time within the historical defrost cycle, so that the compensated target defrost time is long enough to ensure more thorough defrosting.

[0077] Reference Figure 5 , Figure 5 This is a flow chart of a fourth embodiment of a method for controlling an air conditioner according to the present invention. Based on the first, second and third embodiments described above, the fourth embodiment of the method for controlling an air conditioner according to the present invention is proposed.

[0078] In the fourth embodiment, to accurately determine the defrost state of the air conditioner, step S10 may include:

[0079] Step S101: Obtain the current windshield level of the air conditioner.

[0080] It should be noted that the current wind speed level refers to the current wind speed level of the air conditioner. Generally, the wind speed of an air conditioner can be divided into low, medium, and high speeds, and of course other levels can also be included. When using the air conditioner, users usually select the corresponding wind speed level. For example, when rapid heating is required, high wind speed is selected; when maintaining the temperature, low wind speed is selected.

[0081] In specific implementation, the air conditioner control device can determine the current windshield level of the air conditioner by reading the speed of the indoor unit fan, or determine the current windshield level of the air conditioner based on the windshield instruction recently sent by the user. Of course, other methods can also be used, and this embodiment does not limit this.

[0082] Step S102: taking a historical defrost cycle having the same windshield level as the current windshield level as a reference defrost cycle.

[0083] It's understandable that at different wind speed settings, the indoor unit's fan speed varies, and the heat exchange capacity of the heat exchanger also varies. This means the air conditioner's heating capacity also changes, and specifically, the corresponding coil temperature also varies. For example, if the indoor unit coil temperature is 25°C at low wind speed, then at high wind speed, the coil temperature might be 22°C.

[0084] In this embodiment, since different windshield levels also affect the heating capacity of the air conditioner, if the data of all historical defrost cycles is directly used to determine whether the air conditioner outdoor unit has defrosted thoroughly, there may be deviations. Therefore, this embodiment requires filtering historical defrost cycles according to the windshield level to obtain reference operating parameters and defrost control parameters.

[0085] In a specific implementation, a cycle with the same windshield level as the current windshield level is selected from the historical defrost cycles as a reference defrost cycle; the reference defrost cycle is a series of consecutive cycles. For example, K1, K2, K3, K4, and K5 are three consecutive cycles from the oldest to the newest time. The windshield level for K1, K4, and K5 is high speed, while the windshield level for K2 and K3 is low speed. If the current windshield level is high speed, the reference defrost cycles are K4 and K5; if the current windshield level is low speed, the reference defrost cycles are K2 and K3.

[0086] It should be noted that if the reference defrost cycle is not the previous one before the current time, the interval between the reference defrost cycle and the current time must be determined. If the interval is longer than a preset duration, the reference defrost cycle data may be deemed invalid. For example, if K5 is the previous one before the current time, and if the reference defrost cycles are K2 and K3, and the interval between K3 and the current time is longer than 12 hours, the reference defrost cycle determination for K2 and K3 is canceled. Of course, the interval can be set according to user needs and is not limited in this embodiment.

[0087] Step S103: Obtaining operating parameters and defrost control parameters corresponding to a reference defrost cycle.

[0088] It is understandable that the air conditioner control device can store the detected operating parameters and defrost control parameters in a preset memory, and then obtain the operating parameters and defrost control parameters of the historical defrost cycle by reading the memory.

[0089] It should be noted that if there is no data corresponding to the reference defrost cycle, the subsequent step S20 is not executed, and the air conditioner is waited to run for at least two cycles at the current windshield level, and then the operating parameters and defrost control parameters corresponding to the at least two cycles are obtained.

[0090] In the fourth embodiment, by identifying the windshield level of the air conditioner, the operating parameters and defrost control parameters corresponding to the reference defrost cycle with the same windshield level are selected from the historical defrost cycles to more accurately determine whether there is an incomplete defrost condition in the outdoor unit of the air conditioner to avoid misjudgment.

[0091] In addition, an embodiment of the present invention further provides a storage medium storing an air conditioner control program. When executed by a processor, the air conditioner control program implements the steps of the air conditioner control method described above. Since this storage medium can adopt the technical solutions of all the above embodiments, it at least has the beneficial effects brought about by the technical solutions of the above embodiments, and will not be detailed here.

[0092] In addition, refer to Figure 6 , Figure 6 This is a structural block diagram of a first embodiment of an air conditioner control device according to the present invention. The embodiment of the present invention further provides an air conditioner control device.

[0093] In this embodiment, the air conditioner control device includes:

[0094] The acquisition module 100 is used to acquire the operating parameters and defrost control parameters of the air conditioner in the historical defrost cycle.

[0095] It should be noted that the historical defrost cycle refers to the time period corresponding to the defrost operation performed by the air conditioner in the past period when the air conditioner control device executes the air conditioner control method in this embodiment. Generally, a defrost cycle includes a defrost detection time period and a defrost execution time period. During the defrost detection time period, the acquisition module 100 can detect the operating status of the air conditioner, such as parameters such as compressor frequency, coil temperature, or air outlet temperature, and the detected parameters can be used as operating parameters; during the defrost execution time period, the air conditioner control device can control the air conditioner to perform a defrost mode, usually by adjusting the connectivity state of the four-way valve corresponding to the compressor to allow high-temperature refrigerant to enter the evaporator, and by increasing the temperature of the evaporator to eliminate the frost layer on the evaporator surface; wherein, the temperature of the refrigerant or the duration of the defrost mode can be used as a defrost control parameter.

[0096] In a specific implementation, the acquisition module 100 executes the air conditioner control method of this embodiment each time the air conditioner exits defrost mode to analyze historical defrost cycles and determine the defrost status of the air conditioner. The acquisition module 100 can store the detected operating parameters and defrost control parameters in a preset memory, and then retrieve the operating parameters and defrost control parameters of the historical defrost cycles by reading the memory.

[0097] The judgment module 200 is used to determine the heating amount change trend of the air conditioner according to the operating parameters.

[0098] It is understandable that the logic for air conditioners to determine defrost is usually based on the coil temperature of the outdoor unit heat exchanger. When the coil temperature is low, it indicates that there is a defrost risk, and the air conditioner needs to be put into defrost mode. However, the defrost risk of the same coil temperature varies at different outdoor temperatures. For example, if the coil temperature is 1 degree Celsius, the defrost risk in an outdoor environment of -2°C is different from that in an outdoor environment of 0°C. Obviously, frost is more likely to form in an outdoor environment of -2°C, and the frost layer is thicker. Therefore, if the same defrost mode is used as in an outdoor environment of 0°C, there may be problems with incomplete defrosting, and the outdoor unit may quickly frost again or even freeze.

[0099] In this embodiment, to address the issue of incomplete defrosting, the defrost status of the air conditioner is determined by analyzing the changing trend of the air conditioner's heating capacity. If the outdoor unit is incompletely defrosted, this will affect the outdoor unit's ability to absorb heat from the outside, thereby affecting the indoor unit's heating capacity. If the air conditioner's heating capacity gradually decreases, this indicates incomplete defrosting. If the air conditioner's heating capacity remains unchanged, this indicates complete defrosting.

[0100] It should be noted that operating parameters include parameters of the air conditioner over multiple historical defrost cycles. By comparing the operating parameters of each cycle, the heating capacity trend of the air conditioner can be determined. For example, if the operating parameter is room temperature, as the room temperature gradually decreases from the current time, it can be determined that the heating capacity of the air conditioner is decreasing, showing a decreasing trend.

[0101] The control module 300 is used to compensate the defrost control parameters when the heating amount change trend is a decreasing trend, so that the air conditioner performs a defrost operation according to the compensated defrost control parameters.

[0102] It is understandable that if the heating amount shows a decreasing trend, it indicates that the outdoor unit is experiencing an incomplete defrost problem. In order to perform a more thorough defrost, the defrost effect needs to be improved. Specifically, the defrost control parameters can be compensated to achieve a higher defrost capacity than the historical defrost operation. For example, the defrost control parameters may include the refrigerant temperature. If the refrigerant temperature during the historical defrost cycle was 20°C, it can be compensated to 25°C or 30°C. By increasing the compressor frequency or the refrigerant temperature, the defrost effect can be improved. The specific compensation amount can be set according to user needs and is not limited in this embodiment.

[0103] It should be noted that after determining the compensated defrost control parameters, the control module 300 still needs to perform defrost detection to determine whether defrost is required. If defrost is required, the defrost operation is performed according to the compensated defrost control parameters. If not, the current state of the air conditioner remains unchanged. Specifically, defrost detection and defrost operation are well-established technologies and will not be further described in detail in this embodiment.

[0104] In this embodiment, changes in the air conditioner's heating capacity are determined based on the air conditioner's historical defrost data. If the air conditioner's heating capacity decreases, this indicates that the outdoor unit is experiencing incomplete defrosting. In this case, the defrost control parameters in the historical defrost data are compensated to achieve a higher defrost capacity, allowing the air conditioner to defrost more thoroughly the next time it performs a defrost operation.

[0105] Other embodiments or specific implementations of the air conditioner control device of the present invention can refer to the above-mentioned method embodiments, and therefore at least have all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0106] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or system. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or system comprising the element.

[0107] The serial numbers of the embodiments of the present invention are for descriptive purposes only and do not represent superiority or inferiority of the embodiments. In a unit claim that enumerates several means, several of these means may be embodied by the same item of hardware. The use of the terms first, second, and third, etc., does not denote any order; these terms should be interpreted as designations.

[0108] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product, which is stored in a storage medium (such as a read-only memory image (ROM) / random access memory (RAM), a magnetic disk, or an optical disk), and includes a number of instructions for enabling a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods described in each embodiment of the present invention.

[0109] The above are only preferred embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention description and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for controlling an air conditioner, characterized in that: The air conditioner control method comprises the following steps: Obtaining operating parameters and defrost control parameters of the air conditioner in a plurality of consecutive historical defrost cycles having the same windshield level as the current windshield level; Determining a heating capacity change trend of the air conditioner according to the operating parameters; and When the heating amount change trend is a decreasing trend, the defrost control parameter is compensated so that the air conditioner performs a defrost operation according to the compensated defrost control parameter.

2. The air conditioner control method according to claim 1, wherein: The operating parameters include the indoor unit coil temperature, and determining the heating amount change trend of the air conditioner according to the operating parameters includes: The heating amount variation trend of the air conditioner is determined according to the indoor unit coil temperature variation trend corresponding to each historical defrost cycle.

3. The air conditioner control method according to claim 2, wherein: Determining the heating amount change trend of the air conditioner according to the indoor unit coil temperature change trend corresponding to each historical defrost cycle includes: When the historical coil temperatures corresponding to three consecutive historical defrost cycles decrease successively, it is determined that the heating amount change trend of the air conditioner is a decreasing trend.

4. The air conditioner control method according to claim 2, wherein: The obtaining of the operating parameters of the air conditioner in the historical defrost cycle includes: Obtaining a set of indoor unit coil temperatures of the air conditioner within a preset time period of each historical defrost cycle; and An average temperature corresponding to each indoor unit coil temperature set is determined, and the average temperature is used as the indoor unit coil temperature corresponding to each historical defrost cycle.

5. The air conditioner control method according to any one of claims 1 to 4, characterized in that: The defrost control parameter includes a defrost time, and compensating the defrost control parameter so that the air conditioner performs a defrost operation according to the compensated defrost control parameter includes: The defrost time is compensated according to the preset compensation time, so that the air conditioner performs a defrost operation according to the compensated defrost time.

6. The air conditioner control method according to claim 5, wherein: The method of compensating the defrost time according to the preset compensation time so that the air conditioner performs the defrost operation according to the compensated defrost time includes: Determine the maximum defrost time within the defrost time corresponding to each historical defrost cycle; and The maximum defrost time is added to a preset compensation time to obtain a target defrost time, so that the air conditioner performs a defrost operation according to the target defrost time.

7. An air conditioner control device, characterized in that: The air conditioner control device comprises: An acquisition module, configured to acquire operating parameters and defrost control parameters of the air conditioner in a plurality of consecutive historical defrost cycles having the same windshield level as the current windshield level; A judgment module is configured to determine a heating amount change trend of the air conditioner according to the operating parameters; and The control module is used to compensate the defrost control parameter when the heating amount change trend is a decreasing trend, so that the air conditioner performs a defrost operation according to the compensated defrost control parameter.

8. An air conditioner control device, characterized in that: The air conditioner control device includes: a memory, a processor, and an air conditioner control program stored in the memory and executable on the processor. When the air conditioner control program is executed by the processor, the air conditioner control method according to any one of claims 1 to 6 is implemented.

9. A storage medium, characterized in that: The storage medium stores an air conditioner control program, and when the air conditioner control program is executed by the processor, the air conditioner control method according to any one of claims 1 to 6 is implemented.

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