Air conditioner control method, storage medium, electronic equipment and air conditioner

Abstract

The invention relates to the technical field of air conditioners, particularly provides an air conditioner control method, a storage medium, electronic equipment and an air conditioner, and aims to solve the problem of poor stability after a frequency reduction mode is started in an existing air conditioner. In order to achieve the purpose, the control method of the air conditioner comprises the steps that within the preset duration, the first entering frequency of the actual exhaust temperature of a compressor entering a preset temperature threshold interval is determined; if the first entering frequency is larger than or equal to the target frequency, the current operation frequency of the compressor is obtained and defined as the initial frequency; according to the current operation frequency and the use habit level of the user, an operation strategy of a compressor and a rotating speed adjusting strategy of an outdoor fan are determined; the compressor is controlled to operate in a frequency-increasing mode according to the operation strategy, and the rotating speed of the outdoor fan is adjusted according to the rotating speed adjusting strategy. The compressor frequency and the outdoor fan rotating speed are controlled through the use habit level of a user, frequent adjustment of the opening degree of an expansion valve is avoided, and stability is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and specifically provides a control method, a storage medium, an electronic device and an air conditioner for an air conditioner. Background Art

[0002] Air conditioners can adjust the comfort of the indoor environment and have become an essential household appliance in today's home life. In order to meet people's increasingly high comfort standards, variable-frequency air conditioners have gradually become the mainstream technology in the air-conditioning industry due to their advantages such as energy conservation, high efficiency, and accurate temperature control. Compared with traditional fixed-frequency air conditioners, variable-frequency air conditioners can adjust the operating frequency of the compressor and can adjust the cooling or heating capacity in real time according to the changes in the indoor and outdoor environments, thereby significantly reducing energy consumption and improving user comfort. With the promotion of intelligent control technology and energy conservation and environmental protection requirements, variable-frequency air conditioners have made significant progress in energy efficiency ratio, response speed, and intelligence. When the variable-frequency air conditioner operates at a low frequency, by controlling the opening degree of the expansion valve as a throttling element, the refrigerant flow rate entering the evaporator is controlled, thereby reducing the cooling capacity and maintaining the room temperature.

[0003] In the related art, an air conditioner usually increases or decreases the opening degree of the expansion valve according to the difference between the current exhaust temperature of the compressor and the target exhaust temperature to maintain the temperature stability. However, when the air conditioner operates at a low temperature and low frequency, the opening degree of the expansion valve is usually small. To maintain the corresponding refrigerant flow rate, the opening degree of the expansion valve is increased or decreased according to the difference between the current exhaust temperature of the compressor and the target exhaust temperature to maintain the temperature stability. However, when the opening degree of the expansion valve changes, even if the change is very small, it will cause the exhaust temperature to not reach the stable range of the target exhaust temperature, resulting in the valve opening fluctuating back and forth between opening wide and closing small, that is, the throttling and pressure-reducing effect of the expansion valve also fluctuates, resulting in fluctuations in the temperature and output heat of the evaporator. Especially when heating at a low temperature and low frequency, the expansion valve is more likely to have the problem of air conditioner instability caused by continuous changes in the expansion valve. Summary of the Invention

[0004] The present invention aims to solve the above technical problems, that is, to solve the problem of poor stability after the existing air conditioner starts to operate in the frequency reduction mode.

[0005] The present invention provides a control method for an air conditioner, comprising: determining a first number of times that an actual exhaust temperature of a compressor enters a preset temperature threshold interval within a preset time length; if the first number of times of entry is greater than or equal to a target number of times, obtaining a current operating frequency of the compressor and defining it as an initial frequency; determining an operating strategy of the compressor and a speed adjustment strategy of an outdoor fan according to the current operating frequency and a user's usage habit level; controlling the compressor to increase its frequency according to the operating strategy, and adjusting the speed of the outdoor fan according to the speed adjustment strategy; wherein the usage habit level is predetermined based on the user's historical usage habits.

[0006] In the case of adopting the above technical solution, the operation strategy of the compressor and the speed adjustment strategy of the outdoor fan can be determined by the user's usage habit level and the first number of times the actual exhaust temperature of the compressor enters the preset temperature threshold interval. That is, according to the user's usage habit level, the compressor frequency and the outdoor fan speed can be accurately controlled to match the flow of the refrigerant with the opening of the expansion valve, avoid frequent adjustment of the opening of the expansion valve, and then match the flow of the refrigerant with the heating / cooling capacity of the air conditioner, stabilize the heat exchange temperature and heat exchange of the heat exchanger, reduce unnecessary energy consumption to improve the energy efficiency ratio of the system, improve user comfort, and reduce system failures to improve system reliability and extend service life.

[0007] In an optional implementation scheme of the above-mentioned air-conditioning control method, the operation strategy of the compressor and the outdoor fan speed adjustment strategy are determined according to the initial frequency and the usage habit level, including: determining the number of frequency increases and the frequency increase operation duration of the compressor according to a preset frequency increase amount according to the usage habit level; within each frequency increase operation duration, determining the second entry number of the actual exhaust gas temperature of the compressor into the preset temperature threshold interval; within the last frequency increase operation duration, if the second entry number is less than 1, determining that the compressor is operated at the increased frequency and controlling the outdoor fan to operate at the current speed; if the second entry number is greater than or equal to 1, determining the speed adjustment strategy of the outdoor fan according to the usage habit level; wherein the preset frequency increase amount is less than 1Hz.

[0008] In the case of adopting the above technical solution, through the second entry number of the actual exhaust temperature of the compressor into the preset temperature threshold interval, it can be determined that the expansion valve opening is continuously changing, so the actual exhaust temperature does not reach the target exhaust temperature, and the target exhaust temperature fluctuates frequently. Therefore, at this time, the frequency of the compressor can be adjusted by less than 1Hz according to the user's usage habits, so as to ensure the stability of the expansion valve opening through fine adjustment of the frequency and adjustment of the speed of the outdoor fan.

[0009] In an alternative implementation of the above air conditioner control method, the usage habit levels include a first level and a second level; according to the usage habit levels, determining the frequency increase times and the frequency increase operation duration of the compressor according to a preset frequency increase amount includes: if the usage habit level is the first level, determining the frequency increase times as the first number of times and the frequency increase operation duration as the first preset duration; if the usage habit level is the second level, determining the frequency increase times as the second number of times and the frequency increase operation duration as the first preset duration; where the second number of times is greater than the first number of times.

[0010] In the case of adopting the above technical solution, by determining the first level and the second level of the usage habit, the adjustment of the operating frequency of the compressor can be realized more accurately, so as to ensure the stability of the system operation under different usage habits.

[0011] In an alternative implementation of the above air conditioner control method, if the second entry count is greater than or equal to 1, determining the rotation speed adjustment strategy of the outdoor fan according to the usage habit level includes: determining the preset speed increase amount and the speed increase operation duration of the outdoor fan rotation speed according to the first level or the second level; controlling the rotation speed of the outdoor fan to increase by the preset speed increase amount on the initial rotation speed and operate for the speed increase operation duration; determining the third entry count when the actual exhaust temperature of the compressor enters the preset temperature threshold range; if the third entry count is less than 1, determining to control the outdoor fan to operate at the increased rotation speed; if the third entry count is greater than or equal to 1, repeatedly increasing the rotation speed of the outdoor fan by the preset speed increase amount and operating for the speed increase operation duration until the adjustment count reaches the preset count and then stopping the adjustment, controlling the outdoor fan to operate at the initial rotation speed, and controlling the compressor to operate at the initial frequency; where the initial rotation speed is determined based on the usage habit level, and the preset speed increase amount is less than the initial rotation speed.

[0012] In the case of adopting the above technical solution, through the third entry count when the actual exhaust temperature of the compressor enters the preset temperature threshold range, it can be determined that at this time, the expansion valve still has a continuously changing opening degree, which results in the actual exhaust temperature not reaching the target exhaust temperature and the target exhaust temperature still fluctuating frequently. At this time, the rotation speed of the outdoor fan can be accurately adjusted slightly according to the user's usage habit to maintain the opening degree of the expansion valve and the stability of the system. After the adjustment count reaches the preset count, it means that at this time, it is necessary to stop regulating the compressor and the outdoor fan to avoid energy and equipment losses.

[0013] In an alternative implementation of the above air conditioner control method, the first level includes at least a first habit and a second habit, and the second level includes at least a third habit and a fourth habit; the initial speed is determined based on the following method: if the usage habit level is the first habit or the third habit, it is determined that the initial speed of the outdoor fan is the first speed; if the usage habit level is the second habit or the fourth habit, it is determined that the initial speed of the outdoor fan is the second speed; wherein, the first speed is less than the second speed.

[0014] In the case of adopting the above technical solution, through the specific habits in the first level and the second level, the adjustment of the speed of the outdoor fan can be realized more accurately, so as to ensure the stability of the system operation under different usage habits.

[0015] In an alternative implementation of the above air conditioner control method, the usage habit level is determined according to the following method: obtain the historical frequency reduction transition duration of the air conditioner; according to the corresponding relationship between the historical frequency reduction transition duration and the usage habit level in the frequency reduction transition time table, determine the usage habit level.

[0016] In the case of adopting the above technical solution, by matching the historical frequency reduction transition duration with the frequency reduction transition time table, the user's usage habit can be quickly and accurately determined as the basis for air conditioner adjustment.

[0017] In an alternative implementation of the above air conditioner control method, the historical frequency reduction transition duration is determined according to the following method: obtain the actual operating frequency of the compressor in the initial operating stage after the air conditioner is turned on; if the actual operating frequency of the compressor is less than the maximum operating frequency, determine the first duration as the historical frequency reduction transition duration; if the actual operating frequency of the compressor is equal to the maximum operating frequency, obtain the frequency reduction transition durations of a preset number of times before the air conditioner is turned on this time, and determine the average value of the multiple frequency reduction transition durations as the historical frequency reduction transition duration.

[0018] In the case of adopting the above technical solution, after the air conditioner is turned on, when the actual operating frequency of the compressor is less than the maximum operating frequency, the first duration is used as the historical frequency reduction transition duration to improve the response speed when the load of the air conditioner is light; at the same time, after the air conditioner is turned on, when the compressor operates at the maximum operating frequency, by calculating the average value of multiple frequency reduction transition durations, to more accurately match the current operating conditions when the load is large, improve the accuracy of the historical frequency reduction transition duration, and thus improve the control accuracy.

[0019] The present invention also provides a computer-readable storage medium, in which multiple program codes are stored, and the program codes are adapted to be loaded and run by a processor to execute any one of the above air conditioner control methods.

[0020] The present application also provides an electronic device, including a processor and a storage device. The storage device is adapted to store multiple program codes, and the program codes are adapted to be loaded and run by the processor to execute any one of the aforementioned air conditioner control methods.

[0021] The present application also provides an air conditioner, which includes the aforementioned electronic device. Description of the Drawings

[0022] The preferred embodiments of the present invention will be described below with reference to the drawings. In the drawings:

[0023] Figure 1 is a schematic flowchart of a control method for an air conditioner provided by an embodiment of the present disclosure;

[0024] Figure 2 is a schematic flowchart of another control method for an air conditioner provided by an embodiment of the present disclosure;

[0025] Figure 3 is a schematic flowchart of another control method for an air conditioner provided by an embodiment of the present disclosure;

[0026] Figure 4 is a schematic flowchart of another control method for an air conditioner provided by an embodiment of the present disclosure;

[0027] Figure 5 is a schematic flowchart of another control method for an air conditioner provided by an embodiment of the present disclosure;

[0028] Figure 6 is a schematic structural diagram of an electronic device provided by an embodiment of the present disclosure. Detailed Embodiments

[0029] The preferred embodiments of the present application will be described below with reference to the drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principle of the present application and are not intended to limit the protection scope of the present application.

[0030] In the description of the present application, the "processor" may include hardware, software, or a combination of both. The processor may be a central processing unit, a microprocessor, a digital signal processor, or any other suitable processor. The processor has data and / or signal processing functions. The processor may be implemented in software, in hardware, or in a combination of both. The computer-readable storage medium includes any suitable medium for storing program codes, such as magnetic disks, hard disks, optical discs, flash memories, read-only memories, random access memories, and so on.

[0031] At present, during the operation of an air conditioner, in the case of low temperature and low frequency, the opening degree of the expansion valve is usually small. In order to maintain the corresponding refrigerant flow rate, the opening degree of the expansion valve is increased or decreased according to the difference between the current exhaust temperature of the compressor and the target exhaust temperature, so as to maintain the temperature stability. However, when the opening degree of the expansion valve changes, even if the change is very small, it will cause the exhaust temperature not to reach the stable range of the target exhaust temperature, resulting in the fluctuation of the valve opening degree between opening wide and closing small. That is, the throttling and pressure-reducing effect of the expansion valve also fluctuates, resulting in the fluctuation of the temperature and output heat of the evaporator.

[0032] Therefore, in order to solve the problem of poor stability after the existing air conditioner starts to operate in the frequency reduction mode, the present invention provides a control method for an air conditioner. Next, refer to Figures 1 to 6 and introduce the control method of the air conditioner of the present invention.

[0033] Figure 1 is a schematic flow chart of a control method for an air conditioner provided by the present invention. Combining Figure 1 as shown, the control method for an air conditioner provided by the present invention includes:

[0034] S11, within a preset time period, determine the first entry times when the actual exhaust temperature of the compressor enters a preset temperature threshold range.

[0035] S12, if the first entry times are greater than or equal to the target times, obtain the current operating frequency of the compressor and determine it as the initial frequency.

[0036] S13, according to the initial frequency and the usage habit level, determine the operating strategy of the compressor and the rotational speed adjustment strategy of the outdoor fan.

[0037] S14, control the compressor to operate at an increased frequency according to the operating strategy, and adjust the rotational speed of the outdoor fan according to the rotational speed adjustment strategy.

[0038] The usage habit level is pre-determined based on the user's historical usage habits.

[0039] In this solution, the control system of the air conditioner determines the target exhaust temperature T 目标 of the compressor according to the target operating temperature set by the user, and the preset temperature threshold range is determined according to the target exhaust temperature T 目标 of the compressor. Specifically, the preset temperature threshold range is set as (T 目标 - 1, T 目标 + 1).

[0040] Optionally, in order to improve the accuracy of the first preset times, when the actual exhaust temperature T 实际 of the compressor first enters the preset temperature threshold range (T 目标 - 1, T 目标When it is +1), start counting the first preset number of times.

[0041] Within the preset duration, if the first entry count is greater than or equal to the target count, it is determined that the opening degree of the expansion valve of the air-conditioning system has entered the stage of frequent increase / decrease. Therefore, certain measures need to be taken to stabilize the opening degree of the expansion valve.

[0042] Optionally, the preset duration remains the setting at the factory. Or, it can be determined according to the duration of the expansion valve being in an unstable state statistically during the actual operation process. Specifically, the preset duration is set to 20 min. The preset number of times can be set to 5 times. Alternatively, the preset number of times is greater than 5 times.

[0043] Optionally, since the parameters such as the target operating temperature of the air conditioner and the indoor fan speed set by the user each time of use are all different. The user here refers to the same person or multiple people. Therefore, the usage habit level can be determined according to the user's historical usage habits, so that the control system automatically determines the operation strategy of the compressor and the speed adjustment strategy of the outdoor fan according to the usage habit level. By controlling the compressor to run at an increased frequency according to the operation strategy and adjusting the speed of the outdoor fan according to the speed adjustment strategy. In this way, it is possible to avoid the frequent change of the opening degree of the expansion valve resulting in the frequent change of the operating temperature of the air conditioner, thereby avoiding being in an environment of sudden cold and sudden heat. This can not only improve the comfort of the user, but also improve the energy efficiency ratio during the operation of the air conditioner, reduce energy consumption, and extend the service life.

[0044] In the case of adopting the above technical solution, through the usage habit level of the user and the first entry count of the actual exhaust temperature of the compressor entering the preset temperature threshold range, the operation strategy of the compressor and the speed adjustment strategy of the outdoor fan can be determined. That is, through the usage habit level of the user, precisely controlling the compressor frequency and the outdoor fan speed, making the refrigerant flow match the opening degree of the expansion valve, avoiding the frequent adjustment of the opening degree of the expansion valve, and then making the refrigerant flow match the heating / cooling capacity of the air conditioner, stabilizing the heat exchange temperature and heat exchange amount of the heat exchanger, reducing unnecessary energy consumption to improve the energy efficiency ratio of the system, enhancing the comfort of the user, and being able to reduce system failures to improve system reliability and extend the service life.

[0045] Figure 2 is a schematic flowchart of a control method for an air conditioner provided by the present invention. Combining Figure 2 As shown, according to the initial frequency and the usage habit level, determining the operation strategy of the compressor and the speed adjustment strategy of the outdoor fan includes:

[0046] S21, according to the usage habit level, determining the number of times of frequency increase of the compressor according to the preset frequency increase amount and the duration of frequency increase operation.

[0047] S22. During each frequency increase operation duration, determine the second entry count of the actual exhaust temperature of the compressor entering the preset temperature threshold range.

[0048] S23. During the last frequency increase operation duration, if the second entry count is less than 1, determine that the compressor operates at the increased frequency and control the outdoor fan to operate at the current speed.

[0049] S24. If the second entry count is greater than or equal to 1, determine the rotational speed adjustment strategy of the outdoor fan according to the usage habit level.

[0050] Among them, the preset frequency increase amount is less than 1 Hz.

[0051] In this solution, for different user usage habit levels, determine the preset frequency increase amount and the number of frequency increases of the compressor. During the operation of the air conditioner, it cannot be infinitely regulated. On the one hand, to avoid waste of energy, on the other hand, it is necessary to ensure the stability of the current operating parameters of the air conditioner. Among them, during each frequency increase operation duration, if the second entry count is less than 1, it means that the opening of the expansion valve tends to be stable at this time. Therefore, there is no need to further regulate the rotational speed of the outdoor fan. At this time, the compressor operates at the increased frequency and controls the outdoor fan to operate at the current speed.

[0052] During the last frequency increase operation duration and each frequency increase operation duration, if the second entry count is less than 1, it means that the regulation of the compressor frequency at this time cannot stabilize the expansion valve. Therefore, further regulate the rotational speed of the outdoor fan. The rotational speed adjustment strategy of the outdoor fan is determined according to the usage habit to reduce energy consumption.

[0053] Optionally, the preset frequency increase amount is less than 1 Hz. In this way, fine adjustment of the compressor can be achieved to avoid excessive changes in the frequency of the compressor, resulting in excessive changes in the refrigerant flow rate, thereby ensuring the stability of the air conditioner operation.

[0054] Alternatively, the count threshold of the second usage count can be set to the value N1, and N1 is greater than 1.

[0055] In the case of adopting the above technical solution, through the second entry count of the actual exhaust temperature of the compressor entering the preset temperature threshold range, it can be determined that when the opening of the expansion valve continuously changes at this time, which causes the actual exhaust temperature not to reach the target exhaust temperature and the target exhaust temperature fluctuates frequently. Therefore, at this time, the frequency of the compressor can be adjusted by less than 1 Hz according to the user's usage habit, so as to ensure the stability of the expansion valve opening through the fine adjustment of the frequency and the rotational speed adjustment of the outdoor fan.

[0056] In an alternative embodiment of the above air conditioner control method, the usage habit levels include a first level and a second level; according to the usage habit level, the number of frequency increases and the frequency increase operation duration of the compressor according to a preset frequency increase amount are determined, including: if the usage habit level is the first level, determining that the number of frequency increases is the first number, and the frequency increase operation duration is the first preset duration; if the usage habit level is the second level, determining that the number of frequency increases is the second number, and the frequency increase operation duration is the first preset duration; wherein, the second number is greater than the first number.

[0057] Optionally, the frequency increase operation duration of the first level is equal to that of the second level, that is, both are the first preset duration. Optionally, the first preset duration is set to 20 min.

[0058] Alternatively, the frequency increase operation duration of the first level is not equal to that of the second level, that is, the frequency increase operation duration of the first level is the first preset duration, and the frequency increase operation duration of the second level is the second preset duration, where the second preset duration is greater than the first preset duration; or, the second preset duration is less than the first preset duration. Based on the fact that the second number is greater than the first number, it shows that at the second level, the frequency of the compressor is adjusted more times, that is, multiple adjustments are required to achieve the stable operation of the air conditioner. Therefore, preferably, the second preset duration is greater than the first preset duration.

[0059] Alternatively, the second preset duration can also be determined according to actual test data or the user's historical usage data.

[0060] Optionally, the set value of the first number is 1; the set value of the second number is 2.

[0061] Alternatively, the set value of the first number is greater than 1, and the set value of the second number is greater than the set value of the first number.

[0062] In the case of adopting the above technical solution, by determining the first level and the second level of the usage habit level, the adjustment of the operating frequency of the compressor can be realized more accurately, so as to ensure the stability of the system operation under different usage habits.

[0063] Figure 3 It is a schematic flowchart of a control method for an air conditioner provided by the present invention. Combining Figure 3 As shown, if the second entry number is greater than or equal to 1, then according to the usage habit level, the speed regulation strategy of the outdoor fan is determined, including:

[0064] S31, according to the first level or the second level, determine the preset speed increase amount and the speed increase operation duration of the outdoor fan speed.

[0065] S32, control the speed of the outdoor fan to increase by the preset speed increase amount on the basis of the initial speed and operate for the speed increase operation duration.

[0066] S33. Determine the third entry count when the actual exhaust temperature of the compressor enters the preset temperature threshold range.

[0067] S341. If the third entry count is less than 1, determine to control the outdoor fan to operate at the increased speed.

[0068] S342. If the third entry count is greater than or equal to 1, repeatedly increase the speed of the outdoor fan by the preset speed increase amount and run for the speed increase operation duration until the adjustment count reaches the preset count, then stop the adjustment and control the outdoor fan to operate at the initial speed, and control the compressor to operate at the initial frequency.

[0069] Wherein, the initial speed is determined based on the usage habit level, and the preset speed increase amount is less than the initial speed.

[0070] In this solution, for different user usage habit levels, the preset speed increase amount and the speed increase operation duration of the outdoor fan speed are determined. During each speed increase operation duration, if the third entry count is less than 1, it indicates that the opening degree of the expansion valve tends to be stable at this time. Therefore, there is no need to further regulate the speed of the outdoor fan. At this time, determine to control the outdoor fan to operate at the increased speed.

[0071] If the second entry count is greater than or equal to 1, it indicates that the current speed of the outdoor fan cannot meet the requirement of stabilizing the expansion valve. Therefore, next, first determine the preset speed increase amount and the speed increase operation duration of the outdoor fan speed, and control the speed of the outdoor fan to increase by the preset speed increase amount based on the initial speed and run for the speed increase operation duration. During a speed increase operation duration, determine the third entry count. If the third entry count obtained again is less than 1, it indicates that the system area is stable, and operate at the speed of the outdoor fan after the second increase. If the third entry count obtained again is greater than or equal to 1, it indicates that the current system is still in an unstable state, and the opening degree of the expansion valve reciprocates between increasing and decreasing. Therefore, repeatedly increase the speed of the outdoor fan by the preset speed increase amount and the preset speed increase duration.

[0072] Until the adjustment count reaches the preset count, it indicates that the regulation of the outdoor fan speed at this time cannot achieve the stability of the expansion valve either. Therefore, stop the frequency adjustment of the compressor and the adjustment of the outdoor fan speed, control the outdoor fan to operate at the initial speed, and control the compressor to operate at the initial frequency to avoid waste of energy and excessive total adjustment amounts of the compressor frequency and the outdoor fan speed.

[0073] Optionally, the preset speed increase amount is less than the initial speed. Alternatively, it is at least 1 / 3 of the initial speed to achieve fine adjustment of the outdoor fan speed.

[0074] Optionally, the initial rotational speed is determined based on the usage habit level, and intelligent adjustment of the air conditioner is achieved according to the user's usage habit, improving system stability while reducing energy consumption.

[0075] Alternatively, the number threshold for the third usage times can be set to N2, where N2 is greater than 1.

[0076] Optionally, the preset number of times is at least 3.

[0077] In the case of adopting the above technical solution, through the third entry times when the actual exhaust temperature of the compressor enters the preset temperature threshold range, it can be determined that when the expansion valve still has a continuously changing opening degree, which results in the actual exhaust temperature not reaching the target exhaust temperature and the target exhaust temperature still fluctuating frequently. At this time, the rotational speed of the outdoor fan can be precisely adjusted slightly according to the user's usage habit to maintain the opening degree of the expansion valve and the stability of the system. When the adjustment times reach the preset number of times, it indicates that it is necessary to stop regulating the compressor and the outdoor fan to avoid energy and equipment losses.

[0078] Optionally, if the third entry times is greater than or equal to 1, the rotational speed adjustment strategy of the outdoor fan is determined according to the usage habit level, and it further includes: after the adjustment times reach the preset number of times, controlling the outdoor fan to operate at the initial rotational speed and controlling the compressor to operate at the initial frequency; obtaining the adjustment interval duration of the opening degree of the expansion valve when the air conditioner enters the low-frequency operation mode; controlling the adjustment interval duration to increase by a preset interval amount.

[0079] In the case of adopting the above technical solution, when the fine adjustment of the frequency of the compressor and the rotational speed of the outdoor fan cannot achieve the effect of stabilizing the expansion valve, the opening degree of the expansion valve can be adjusted with a time delay, so as to avoid frequent adjustment of the expansion valve in a short time and maintain the stability of the system and the constancy of the output heat.

[0080] In the optional implementation of the above air conditioner control method, the first level at least includes the first habit and the second habit, and the second level at least includes the third habit and the fourth habit; the initial rotational speed is determined based on the following method: if the usage habit level is the first habit or the third habit, it is determined that the initial rotational speed of the outdoor fan is the first rotational speed; if the usage habit level is the second habit or the fourth habit, it is determined that the initial rotational speed of the outdoor fan is the second rotational speed; where the first rotational speed is less than the second rotational speed.

[0081] Optionally, the first level includes at least a first habit and a second habit; the second level includes at least a third habit and a fourth habit. The up-frequency operation duration in the first level matches the up-frequency operation duration in the second level, and the number of up-frequency times in the first level is less than the number of up-frequency times in the second level. In the same level, the first rotational speed is less than the second rotational speed; in the first habit or the third habit, this represents that the user is more inclined to low-frequency heating / cooling, or more inclined to small heating capacity / small cooling capacity; in the second habit or the fourth habit, this represents that the user is more inclined to large heating capacity / large cooling capacity.

[0082] Optionally, the preset speed increase amount in the first habit is equal to the preset speed increase amount in the second habit. Alternatively, the preset speed increase amount in the first habit is less than the preset speed increase amount in the second habit.

[0083] In the case of adopting the above technical solution, through the specific habits in the first level and the second level, the adjustment of the outdoor fan rotational speed can be realized more accurately, so as to ensure the stability of the system operation under different usage habits.

[0084] Figure 4 It is a schematic flow chart of a control method for an air conditioner provided by the present invention. Combined with Figure 4 as shown, the usage habit level is determined according to the following method:

[0085] S41, obtain the historical frequency reduction transition duration of the air conditioner.

[0086] S42, determine the usage habit level according to the corresponding relationship between the historical frequency reduction transition duration in the frequency reduction transition time table and the usage habit level.

[0087] In this solution, the usage habit level corresponding to the historical frequency reduction transition duration can be determined according to the frequency reduction transition time table. Among them, the historical frequency reduction transition duration is the duration from the start of the air conditioner operation to the start of the compressor frequency reduction operation.

[0088] Table 1-1 is the frequency reduction transition time table. Combined with Table 1-1 shown, for example, when the historical frequency reduction transition duration is 25 min, then, the usage habit level that matches the preset frequency reduction duration range (30 - 60] can be obtained in the frequency reduction transition time table as the second habit in the first level. Table 1-1

[0089] In the case of adopting the above technical solution, through the matching of the historical frequency reduction transition duration and the frequency reduction transition time table, the user's usage habit can be quickly and accurately determined as the basis for air conditioner adjustment.

[0090] Figure 5It is a schematic flow diagram of a control method for an air conditioner provided by the present invention. Combined with Figure 5 As shown, the historical frequency reduction transition duration is determined in the following manner:

[0091] S51, Obtain the actual operating frequency of the compressor during the initial operating stage after the air conditioner is turned on.

[0092] S521, If the actual operating frequency of the compressor is less than the maximum operating frequency, determine the first duration as the historical frequency reduction transition duration.

[0093] S522, If the actual operating frequency of the compressor is equal to the maximum operating frequency, obtain the frequency reduction transition durations for a preset number of times before the air conditioner is turned on this time, and determine the average value of the multiple frequency reduction transition durations as the historical frequency reduction transition duration.

[0094] In this solution, if during the initial operating stage after the air conditioner is turned on, the actual operating frequency of the compressor is less than the maximum operating frequency, it indicates that the load of the air conditioner is relatively light, and the frequency reduction transition duration does not need to be too long. Therefore, it is set to a fixed first duration to improve the response speed. Optionally, the first duration is 20 min. Alternatively, the first duration is set to any value less than 30 min.

[0095] If during the initial operating stage after the air conditioner is turned on, the actual operating frequency of the compressor matches the maximum operating frequency, that is, the compressor operates at the maximum operating frequency, it indicates that the load of the air conditioner is relatively large. Therefore, the frequency reduction transition duration is dynamically obtained and adjusted according to historical data, and the average value of the previous several times is obtained to avoid the contingency and limitations of individual data, thereby improving the control accuracy.

[0096] Optionally, the preset number of times is at least 5 times. When performing statistics, the system stores the values of the 5 historical frequency reduction durations before the air conditioner is turned on this time. Starting from the 6th time, the statistical value of the 6th time covers the 1st one, the 7th statistical value covers the 2nd statistical value... and so on. Calculate the average value of the 5 statistical values to obtain the historical transition duration.

[0097] Furthermore, the obtained historical transition duration covers and removes the maximum and minimum values in the statistical values, and is used as the initial 5 values for the next time the air conditioner is turned on. Since the maximum and minimum values may be abnormal data caused by accidental factors (such as sudden environmental changes, abnormal user operations, etc.), removing these extreme values can make the statistical result of the historical transition duration more accurate, and the remaining data can better reflect the operating law of the air conditioner under normal conditions, thereby making the operation control of the air conditioner more stable, avoiding frequent adjustments caused by data fluctuations, improving user comfort, and reducing energy consumption.

[0098] Alternatively, determine the frequency reduction transition duration after the previous time the air conditioner was turned on as the historical frequency reduction transition duration.

[0099] In the case of adopting the above technical solution, after the device is powered on, when the actual operating frequency of the compressor is less than the maximum operating frequency, the first duration is used as the historical frequency reduction transition duration to improve the response speed when the load of the air conditioner is light; at the same time, after the device is powered on, when the compressor operates at the maximum operating frequency, by calculating the average value of multiple frequency reduction transition durations, it is possible to more accurately match the current operating conditions when the load is large, improve the accuracy of the historical frequency reduction transition duration, and thus improve the control accuracy.

[0100] Combined with Figure 6 As shown, the present application also provides an electronic device, including a processor and a storage device. In some possible implementation manners of the present application, the electronic device may further include a plurality of processors 601 and a plurality of storage devices 602. The storage device 602 is adapted to store multiple program codes, and the program codes are adapted to be loaded and run by the processor 601 to execute any one of the control methods of the air conditioner as described above. The program for starting the control method of the above method embodiment can be divided into multiple sub-programs, and each sub-program can be loaded and run by the processor 601 respectively to execute different steps of the control method for starting the program of the above method embodiment. Specifically, each sub-program can be stored in different storage devices 602 respectively, and each processor 601 can be configured to execute the programs in one or more storage devices 602 to jointly implement the control method of the air conditioner in the above method embodiment, that is, each processor 601 respectively executes different steps of the control method for starting the program of the above method embodiment to jointly implement the control method of the air conditioner in the above method embodiment.

[0101] The above-mentioned plurality of processors 601 may be processors deployed on the same device. For example, the above-mentioned electronic device may be a high-performance device composed of multiple processors, and the above-mentioned plurality of processors 601 may be the processors configured on the high-performance device. In addition, the above-mentioned plurality of processors 601 may also be processors deployed on different devices. For example, the above-mentioned electronic device may be a server cluster, and the above-mentioned plurality of processors 601 may be the processors on different servers in the server cluster.

[0102] The present invention also provides a computer-readable storage medium. In an embodiment of the computer-readable storage medium according to the present invention, the computer-readable storage medium may be configured to store a program for executing the control method of the air conditioner in the above method embodiment. This program can be loaded and run by a processor to implement the control method of the air conditioner. For ease of description, only the parts related to the embodiments of the present invention are shown. For the specific technical details not disclosed, please refer to the method part of the embodiments of this application. The computer-readable storage medium may be a storage device formed by various electronic devices. Optionally, in the embodiments of this application, the computer-readable storage medium is a non-transitory computer-readable storage medium.

[0103] The present invention also provides an air conditioner. In an embodiment of the air conditioner according to the present invention, the air conditioner may include the electronic device in the above embodiment of the electronic device.

[0104] Those skilled in the art can understand that all or part of the processes in the method of implementing the above embodiments of the present invention can also be completed by instructing relevant hardware through a computer program. The above computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, the steps of the above method embodiments can be implemented. Among them, the above computer program includes computer program code, and the above computer program code can be in the form of source code, object code, executable file, or some intermediate form, etc. The above computer-readable storage medium may include: any entity or device, medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory, random access memory, electrical carrier signal, telecommunication signal, and software distribution medium that can carry the above computer program code.

[0105] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A control method for an air conditioner, characterized in that Including: Within a preset time duration, determining the first entry count of the actual exhaust temperature of the compressor entering a preset temperature threshold range; If the first entry count is greater than or equal to a target count, obtaining the current operating frequency of the compressor and defining it as the initial frequency; Determining the operating strategy of the compressor and the rotational speed adjustment strategy of the outdoor fan according to the current operating frequency and the user's usage habit level; Controlling the compressor to operate with frequency increase according to the operating strategy, and adjusting the rotational speed of the outdoor fan according to the rotational speed adjustment strategy; Wherein, the usage habit level is predetermined based on the user's historical usage habits.

2. The control method according to claim 1, wherein Determining the operating strategy of the compressor and the outdoor fan rotational speed adjustment strategy according to the initial frequency and the usage habit level, including: Determining the frequency increase count and the frequency increase operating duration of the compressor according to a preset frequency increase amount according to the usage habit level; Within each frequency increase operating duration, determining the second entry count of the actual exhaust temperature of the compressor entering the preset temperature threshold range; Within the last frequency increase operating duration, if the second entry count is less than 1, determining that the compressor operates at the increased frequency and controlling the outdoor fan to operate at the current rotational speed; if the second entry count is greater than or equal to 1, determining the rotational speed adjustment strategy of the outdoor fan according to the usage habit level; Wherein, the preset frequency increase amount is less than 1 Hz.

3. The control method according to claim 2, wherein The usage habit level includes a first level and a second level; Determining the frequency increase count and the frequency increase operating duration of the compressor according to a preset frequency increase amount according to the usage habit level, including: If the usage habit level is the first level, determining that the frequency increase count is the first count and the frequency increase operating duration is the first preset duration; If the usage habit level is the second level, determining that the frequency increase count is the second count and the frequency increase operating duration is also the first preset duration; Wherein, the second count is greater than the first count.

4. The control method according to claim 3, characterized in that, If the second entry count is greater than or equal to 1, determining the rotational speed adjustment strategy of the outdoor fan according to the usage habit level, including: Determining the preset speed increase amount and the speed increase operating duration of the outdoor fan rotational speed according to the first level or the second level; Controlling the rotational speed of the outdoor fan to increase by the preset speed increase amount on the basis of the initial rotational speed and operating for the speed increase operating duration; Determining the third entry count of the actual exhaust temperature of the compressor entering the preset temperature threshold range; If the third entry count is less than 1, determining to control the outdoor fan to operate at the increased rotational speed; If the third entry count is greater than or equal to 1, repeatedly increasing the rotational speed of the outdoor fan by the preset speed increase amount and operating for the speed increase operating duration until the adjustment count reaches a preset count, then stopping the adjustment and controlling the outdoor fan to operate at the initial rotational speed, and controlling the compressor to operate at the initial frequency; Wherein, the initial rotational speed is determined based on the usage habit level, and the preset speed increase amount is less than the initial rotational speed.

5. The control method according to claim 4, wherein The first level includes a first habit and a second habit, and the second level includes a third habit and a fourth habit; The initial rotational speed is determined based on the following method: If the usage habit level is the first habit or the third habit, determine that the initial speed of the outdoor fan is the first speed; If the usage habit level is the second habit or the fourth habit, determine that the initial speed of the outdoor fan is the second speed; Wherein, the first speed is less than the second speed.

6. The control method according to any one of claims 1 to 5, characterized in that, The usage habit level is determined according to the following method: Obtain the historical frequency reduction transition duration of the air conditioner; Determine the usage habit level according to the corresponding relationship between the historical frequency reduction transition duration and the usage habit level in the frequency reduction transition time table.

7. The control method according to claim 6, characterized in that The historical frequency reduction transition duration is determined according to the following method: Obtain the actual operating frequency of the compressor in the initial operation stage after the air conditioner is turned on; If the actual operating frequency of the compressor is less than the maximum operating frequency, determine that the first duration is the historical frequency reduction transition duration; If the actual operating frequency of the compressor is equal to the maximum operating frequency, obtain the frequency reduction transition durations of a preset number of times before the air conditioner is turned on this time, and determine the average value of the multiple frequency reduction transition durations as the historical frequency reduction transition duration.

8. A computer-readable storage medium storing multiple program codes, characterized in that, The program code is adapted to be loaded and run by a processor to execute the control method of the air conditioner according to any one of claims 1 to 7.

9. An electronic device, comprising a processor and a storage device, the storage device being adapted to store a plurality of program codes, characterized in that, The program code is adapted to be loaded and run by the processor to execute the control method of the air conditioner according to any one of claims 1 to 7.

10. An air conditioner, characterized in that, The air conditioner includes the electronic device according to claim 9.

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