Control method and device of air conditioner, air conditioner and storage medium

Abstract

The application discloses a kind of air conditioner control method, device, air conditioner and storage medium, obtain the outdoor environment temperature of the air conditioner and the evaporation pressure of outdoor heat exchanger;If the outdoor environment temperature and the evaporation pressure meet frost condition, then increase the outdoor fan speed of the air conditioner;If the outdoor fan speed reaches maximum speed, then control the indoor fan speed of the air conditioner and the compressor frequency of the air conditioner, to reduce the frost probability of the outdoor heat exchanger.The present application can effectively prevent frost, improve the comfort of air conditioner.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioner control, and in particular to an air conditioner control method and device, an air conditioner and a storage medium. BACKGROUND

[0002] In an actual heating process of an air conditioner, temperature fluctuation on an outdoor side is likely to cause frosting of an outdoor heat exchanger, and frosting will affect indoor heating capacity. In related technology, defrosting is performed by switching a four-way valve and the like after frosting of the outdoor heat exchanger is detected, and frequent frosting and frequent defrosting will cause frequent fluctuation of indoor temperature, affecting comfort of the air conditioner. SUMMARY

[0003] Embodiments of the present application provide an air conditioner control method and device, an air conditioner and a storage medium, aiming to effectively prevent frosting and improve comfort of the air conditioner.

[0004] In a first aspect, an air conditioner control method is provided, and the air conditioner control method comprises the following steps.

[0005] An outdoor environment temperature of the air conditioner and an evaporation pressure of an outdoor heat exchanger are obtained.

[0006] If the outdoor environment temperature and the evaporation pressure meet frosting conditions, an outdoor fan rotating speed of the air conditioner is increased.

[0007] If the outdoor fan rotating speed reaches a maximum rotating speed, an indoor fan rotating speed of the air conditioner and a compressor frequency of the air conditioner are controlled to reduce a frosting probability of the outdoor heat exchanger.

[0008] Optionally, the controlling of the indoor fan rotating speed of the air conditioner and the compressor frequency of the air conditioner comprises the following steps.

[0009] A first defrosting influence factor of the indoor fan and a second defrosting influence factor of the compressor are obtained.

[0010] If the first defrosting influence factor is greater than the second defrosting influence factor, the indoor fan rotating speed is controlled until the indoor fan rotating speed reaches an adjustment threshold, and then the compressor frequency is controlled.

[0011] If the first defrosting influence factor is less than the second defrosting influence factor, the compressor frequency is controlled until the compressor frequency reaches an adjustment threshold, and then the indoor fan rotating speed is controlled.

[0012] Optionally, the controlling of the indoor fan rotating speed of the air conditioner and the compressor frequency of the air conditioner comprises the following steps.

[0013] obtaining a surface temperature of an indoor heat exchanger of the air conditioner;

[0014] if the surface temperature is greater than a preset limit frequency temperature, controlling a frequency of the compressor;

[0015] if the surface temperature is less than or equal to the preset limit frequency temperature, controlling a rotating speed of an indoor fan until the rotating speed of the indoor fan reaches an adjustment threshold, and then controlling the frequency of the compressor.

[0016] Optionally, the increasing the rotating speed of the outdoor fan of the air conditioner comprises:

[0017] obtaining the rotating speed of the outdoor fan and an ambient humidity of the outdoor heat exchanger;

[0018] determining a rotating speed change value of the rotating speed of the outdoor fan according to the ambient humidity, the rotating speed of the outdoor fan and a preset comparison relationship;

[0019] increasing the rotating speed of the outdoor fan of the air conditioner according to the rotating speed change value.

[0020] Optionally, the increasing the rotating speed of the outdoor fan of the air conditioner comprises:

[0021] obtaining the rotating speed of the outdoor fan;

[0022] determining a plurality of adjustment time points and a rotating speed change value corresponding to each adjustment time point according to a difference between the rotating speed of the outdoor fan and the maximum rotating speed;

[0023] if the adjustment time point is reached, increasing the rotating speed of the outdoor fan of the air conditioner according to the rotating speed change value.

[0024] Optionally, after the controlling the rotating speed of the indoor fan of the air conditioner and the frequency of the compressor of the air conditioner, the method further comprises:

[0025] if the rotating speed of the indoor fan and the frequency of the compressor both reach an adjustment threshold, obtaining a surface image of the outdoor heat exchanger;

[0026] identifying the surface image based on a frosting identification model to obtain a frosting identification result of the outdoor heat exchanger;

[0027] controlling the air conditioner to switch to a refrigeration mode for defrosting according to the frosting identification result, and setting the rotating speed of the outdoor fan, the rotating speed of the indoor fan and the frequency of the compressor to initial values after the defrosting is successful.

[0028] Optionally, after the obtaining the outdoor ambient temperature of the air conditioner and the evaporation pressure of the outdoor heat exchanger, the method further comprises:

[0029] If the outdoor environment temperature is less than or equal to the preset frosting temperature, when the evaporating pressure is detected to be lower than the preset frosting pressure, a duration that the evaporating pressure is lower than the preset frosting pressure is acquired;

[0030] If the duration reaches a preset time length, the frosting condition is met.

[0031] In a second aspect, an embodiment of the present application provides a control device of an air conditioner, the control device of the air conditioner comprising:

[0032] an acquisition module, configured to acquire an outdoor environment temperature of the air conditioner and an evaporating pressure of an outdoor heat exchanger;

[0033] a first control module, configured to increase a rotation speed of an outdoor fan of the air conditioner if the outdoor environment temperature and the evaporating pressure meet a frosting condition;

[0034] a second control module, configured to control a rotation speed of an indoor fan of the air conditioner and a compressor frequency of the air conditioner if the rotation speed of the outdoor fan reaches a maximum rotation speed, so as to reduce a frosting probability of the outdoor heat exchanger.

[0035] In a third aspect, an embodiment of the present application further provides an air conditioner, comprising a memory storing a plurality of instructions; and a processor loading the instructions from the memory to execute steps of any one of the control methods of the air conditioner provided by the embodiments of the present application.

[0036] In a fourth aspect, an embodiment of the present application further provides a computer readable storage medium storing a plurality of instructions, the instructions being adapted to be loaded by a processor to execute steps of any one of the control methods of the air conditioner provided by the embodiments of the present application.

[0037] The application obtains the outdoor environment temperature of the air conditioner and the evaporation pressure of the outdoor heat exchanger; if the outdoor environment temperature and the evaporation pressure meet the frosting condition, the outdoor fan rotating speed of the air conditioner is increased; if the outdoor fan rotating speed reaches the maximum rotating speed, the indoor fan rotating speed of the air conditioner and the compressor frequency of the air conditioner are controlled to reduce the frosting probability of the outdoor heat exchanger. The application pre-judges the frosting condition of the outdoor heat exchanger based on the outdoor environment temperature and the evaporation pressure of the outdoor heat exchanger, and prevents the outdoor heat exchanger from frosting by increasing the outdoor fan rotating speed of the air conditioner. After the outdoor fan rotating speed is increased, the stability of water vapor staying on the fin surface is reduced, more water vapor is taken away by the high-speed airflow, further frosting is avoided, and the airflow turbulence intensity of the outdoor heat exchanger is increased, the heat exchange effect is enhanced, the air-side heat transfer coefficient is increased, and thus the outlet air temperature of the indoor heat exchanger is increased, the indoor comfort is improved. If the outdoor fan rotating speed reaches the maximum rotating speed, the indoor fan rotating speed of the air conditioner and the compressor frequency are controlled to further reduce the frosting probability. The evaporation pressure, the outdoor fan rotating speed, the indoor fan rotating speed and the compressor frequency are combined to reduce the frosting probability of the outdoor heat exchanger of the air conditioner, frequent frosting and defrosting are avoided, the heating effect is improved, and the comfort of the air conditioner is improved. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort.

[0039] Figure 1 is a flowchart of an embodiment of the control method of the air conditioner provided in the embodiments of the present application;

[0040] Figure 2 is a flowchart of another embodiment of the control method of the air conditioner provided in the embodiments of the present application;

[0041] Figure 3 is a flowchart of still another embodiment of the control method of the air conditioner provided in the embodiments of the present application;

[0042] Figure 4 is an experimental data chart provided in the embodiments of the present application;

[0043] Figure 5 is an application scenario flowchart provided in the embodiments of the present application;

[0044] Figure 6 is a structural diagram of the control device of the air conditioner provided in the embodiments of the present application;

[0045] Figure 7 is a structural schematic diagram of an air conditioner provided in an embodiment of the present application. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application. Meanwhile, in the description of the embodiments of the present application, the terms "first", "second", and the like are only used for distinguishing description, and cannot be understood as indicating or implying relative importance. Therefore, the features with "first" and "second" can explicitly or implicitly include one or more features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0047] The embodiments of the present application provide an air conditioner control method and device, an air conditioner and a computer readable storage medium.

[0048] Specifically, the embodiments will be described from the perspective of an air conditioner control device, which can be integrated in an air conditioner, that is, the air conditioner control method of the embodiments of the present application can be executed by an air conditioner.

[0049] The following will be described in detail in conjunction with the drawings, and in the embodiments, the execution subject is taken as an example of an air conditioner. It should be noted that the description order of the following embodiments is not limited as the preferred order of the embodiments. Although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown in the drawings.

[0050] According to the background description, in the related art, defrosting is performed by switching a four-way valve and the like after detecting that frosting occurs on an outdoor heat exchanger. Frequent frosting and frequent defrosting can cause frequent fluctuations in indoor temperature, affecting the comfort of the air conditioner.

[0051] To solve the above problems, the present application discloses an air conditioner control method, please refer to Figure 1 The specific process of the air conditioner control method can be as follows: steps S10-S40, wherein:

[0052] Step S10, obtaining an outdoor environment temperature of the air conditioner and an evaporation pressure of an outdoor heat exchanger;

[0053] In the embodiment, the subject of the air conditioning control method can be an air conditioner, which is often operated in a heating mode to improve the indoor ambient temperature when the outdoor ambient temperature is low in autumn, winter, etc. When the outdoor ambient temperature is low, the outdoor heat exchanger is prone to frosting, and when the air conditioner is operated in the heating mode, the refrigerant in the outdoor heat exchanger needs to be evaporated to absorb heat, so that the temperature of the outdoor heat exchanger is lower and frosting is more likely to occur. After frosting, the cooling effect of the air conditioner is reduced.

[0054] In the embodiment, when the air conditioner is operated in the cooling mode, the outdoor ambient temperature of the air conditioner is obtained, which directly affects the frosting difficulty of the outdoor heat exchanger. In addition, the evaporating pressure of the outdoor heat exchanger is also needed to be obtained, which is the pressure of the refrigerant in the outdoor heat exchanger when evaporating. When the evaporating pressure is higher, the surface refrigerant flow rate is faster, and the temperature of the outdoor heat exchanger is higher. Conversely, when the evaporating pressure is lower, the surface refrigerant flow rate is slower, and the temperature of the outdoor heat exchanger is lower, so that the outdoor heat exchanger is prone to frosting.

[0055] Step S20, if the outdoor ambient temperature and the evaporating pressure meet the frosting condition, the outdoor fan speed of the air conditioner is increased;

[0056] In the embodiment, whether the outdoor heat exchanger meets the frosting condition is determined by the outdoor ambient temperature and the evaporating pressure. When the frosting condition is met, the outdoor heat exchanger can gradually frost. The outdoor ambient temperature is used as one of the frosting conditions because it is the basis for the outdoor heat exchanger to frost. If the outdoor ambient temperature is high, the outdoor heat exchanger will not frost. The evaporating pressure is the cause of the temperature of the outdoor heat exchanger. If the evaporating pressure of the outdoor heat exchanger is low, the temperature of the outdoor heat exchanger will gradually decrease until frosting occurs. The evaporating pressure can be used to predict whether the outdoor heat exchanger will frost, so that the outdoor fan speed of the air conditioner can be increased in advance to prevent frosting.

[0057] Increasing the outdoor fan speed of the air conditioner can prevent the outdoor heat exchanger from frosting. Referring to Figure 4From data 1 and 2, it can be seen that the higher the outdoor fan speed, the higher the outdoor heat exchanger evaporation pressure, and the less likely the outdoor heat exchanger to frost. The reason for no frost is that after the outdoor environment temperature and the evaporation pressure meet the frost condition, it is determined that the outdoor heat exchanger will gradually frost, so before the actual frost, the outdoor fan speed of the air conditioner is increased, so that the airflow turbulence intensity through the outdoor heat exchanger is increased, the stability of the water vapor on the fin surface is reduced, and more water vapor can be taken away by the high-speed airflow, thereby frost can be avoided. Due to the increase of the airflow turbulence intensity through the outdoor heat exchanger, the heat exchange effect of the outdoor heat exchanger is enhanced, the air-side heat transfer coefficient is increased, the outlet temperature of the heat exchanger is increased, and the average temperature of the wall surface of the outdoor heat exchanger fins, copper pipes and the like is also increased, thereby the temperature of the outdoor heat exchanger can be increased, the evaporation pressure is increased, and frost can be better prevented. The enhanced heat exchange effect of the outdoor heat exchanger can also improve the heating effect, increase the indoor temperature, and improve the comfort of the air conditioner.

[0058] In step S30, if the outdoor fan speed reaches the maximum speed, the indoor fan speed of the air conditioner and the compressor frequency of the air conditioner are controlled to reduce the frost probability of the outdoor heat exchanger.

[0059] In this embodiment, since increasing the outdoor fan speed can prevent frost and also improve the comfort of the air conditioner, increasing the outdoor fan speed of the air conditioner is preferred as the operation for preventing frost. If the outdoor fan speed has reached the maximum speed that can be adjusted, but the outdoor environment temperature and the evaporation pressure still meet the frost condition, the indoor fan speed of the air conditioner and the compressor frequency of the air conditioner can be controlled to reduce the frost probability of the outdoor heat exchanger. Alternatively, the indoor fan speed of the air conditioner and / or the compressor frequency of the air conditioner can be reduced to reduce the frost probability of the outdoor heat exchanger.

[0060] Referring to Figure 4 From data 2, 3 and 5, it can be seen that the higher the evaporation pressure of the outdoor heat exchanger, the less likely the outdoor heat exchanger to frost after the indoor fan speed is reduced. The reason is that the refrigerant discharged from the compressor to the indoor heat exchanger is high-temperature and high-pressure gas, and its temperature is generally 30°C higher than the indoor environment temperature. When the indoor fan speed is reduced, the air volume is reduced, the indoor heat exchange effect is poor, the temperature of the refrigerant flowing into the outdoor heat exchanger from the indoor heat exchanger is increased, the condensation pressure of the indoor heat exchanger is increased, the refrigerant flow rate is increased, and the inlet temperature of the outdoor heat exchanger is also increased, thereby the average wall surface temperature and the evaporation pressure of the outdoor heat exchanger are increased, and frost can be effectively prevented.

[0061] From data 5, 6, 7, it can be seen that after reducing the compressor frequency, the higher the evaporation pressure of the outdoor heat exchanger, the less likely the outdoor heat exchanger will frost. The reason is that because the refrigerant flow from the throttling element into the outdoor heat exchanger is small, after the compressor reduces the frequency, it matches the refrigerant flow discharged by the compressor, and the heat absorption effect of the outdoor heat exchanger and the heat load provided by the environment condition are also more matched, thereby causing the outdoor heat exchanger temperature and evaporation pressure to rise, effectively preventing frost.

[0062] It should be noted that in this embodiment, the outdoor fan speed of the air conditioner is preferentially increased, because increasing the outdoor fan speed of the air conditioner can improve the heating effect and effectively prevent frost, so the outdoor fan speed of the air conditioner is preferentially increased in this embodiment, and the beneficial effect of reducing the indoor fan speed and / or reducing the compressor frequency of the air conditioner on the indoor temperature is poorer than increasing the outdoor fan speed of the air conditioner. After the outdoor fan speed reaches the maximum speed, the indoor fan speed and / or the compressor frequency of the air conditioner is selected to be reduced.

[0063] In the technical solution disclosed in this embodiment, the outdoor environment temperature of the air conditioner and the evaporation pressure of the outdoor heat exchanger are obtained; if the outdoor environment temperature and the evaporation pressure meet the frost condition, the outdoor fan speed of the air conditioner is increased; if the outdoor fan speed reaches the maximum speed, the indoor fan speed of the air conditioner and the compressor frequency of the air conditioner are controlled to reduce the frost probability of the outdoor heat exchanger. The present application can pre-judge the frost condition of the outdoor heat exchanger based on the outdoor environment temperature and the evaporation pressure of the outdoor heat exchanger, and prevent the outdoor heat exchanger from frosting by increasing the outdoor fan speed of the air conditioner. When the outdoor fan speed is increased, the stability of water vapor on the fin surface will decrease, and more water vapor will be carried away by the high-speed airflow, thereby avoiding further frosting. In addition, the turbulent intensity of the airflow flowing through the outdoor heat exchanger will increase, the heat exchange effect will be enhanced, and the air-side heat transfer coefficient will increase, thereby increasing the outlet air temperature of the indoor heat exchanger and improving indoor comfort. If the outdoor fan speed reaches the maximum speed, the indoor fan speed and the compressor frequency of the air conditioner can be controlled to further reduce the frost probability. In addition, increasing the indoor fan speed can increase the heat stored in the room, which can cushion the heat loss caused by adjusting the indoor fan speed and the compressor frequency of the air conditioner later, so that reducing the indoor fan speed and / or reducing the compressor frequency of the air conditioner will not cause too much fluctuation of the indoor temperature. By combining the evaporation pressure, the outdoor fan speed, the indoor fan speed and the compressor frequency to reduce the frost probability of the outdoor heat exchanger of the air conditioner, frequent frosting and defrosting can be avoided, thereby improving the heating effect and improving the comfort of the air conditioner.

[0064] Further, after step S10, it further includes:

[0065] If the outdoor ambient temperature is less than or equal to the preset frosting temperature, then when the evaporation pressure is detected to be lower than the preset frosting pressure, the duration of the evaporation pressure being lower than the preset frosting pressure is obtained;

[0066] If the duration reaches the preset duration, the frosting condition is met.

[0067] In this embodiment, the air conditioner can gradually meet the frosting conditions based on the outdoor ambient temperature and the evaporation pressure of the outdoor heat exchanger. After obtaining the outdoor ambient temperature, the relationship between the outdoor ambient temperature and the preset frosting temperature is detected. The preset frosting temperature can generally be set to 4°C. When the outdoor ambient temperature is higher than the preset frosting temperature, it can provide enough heat to the outdoor heat exchanger, making it difficult for it to frost. When it is lower than the preset frosting temperature, the outdoor environment does not provide enough heat to the indoor heat exchanger, making it easy for the indoor heat exchanger to frost. Therefore, if the outdoor ambient temperature is less than or equal to the preset frosting temperature, the evaporation pressure of the outdoor heat exchanger is obtained, and the comparison result between the evaporation pressure and the preset threshold is judged. When the evaporation pressure is detected to be lower than the preset frosting pressure, the timing starts to obtain the duration of the evaporation pressure being lower than the preset frosting pressure. If the evaporation pressure is higher than the preset frosting pressure afterward, the timing stops. If the recorded duration reaches the preset duration, it is considered that the evaporation pressure of the outdoor heat exchanger has been low for a long time, which may lead to the outdoor heat exchanger frosting. To prevent frost formation, the outdoor fan speed of the air conditioner needs to be increased. After increasing the outdoor fan speed, the duration will be reset to zero, and the duration of the evaporation pressure being lower than the preset evaporation pressure after detecting that the outdoor ambient temperature is lower than the preset frost temperature will be re-acquired.

[0068] It should be noted that, referring to Figure 4 By comparing the frosting data with the non-frosting data, it can be found that frosting is more likely to occur at a low pressure of 0.65MPa. Therefore, in this embodiment, the preset frosting pressure can be set to 0.65MPa.

[0069] By combining outdoor ambient temperature, outdoor heat exchanger evaporation pressure, and the duration for which the evaporation pressure is below the preset frosting pressure, it is possible to more accurately predict whether the outdoor heat exchanger is about to frost. This allows for the timely increase of the outdoor fan speed, improving indoor heating efficiency and preventing outdoor heat exchanger frost formation, thus enhancing the comfort of the air conditioner.

[0070] Furthermore, step S20 also includes:

[0071] Obtain the outdoor fan speed and the ambient humidity of the outdoor heat exchanger;

[0072] The change in the outdoor fan speed is determined based on the ambient humidity, the outdoor fan speed, and a preset reference relationship.

[0073] Increase the outdoor fan rotating speed of the air conditioner according to the rotating speed change value.

[0074] In the embodiment, one of the reasons that increasing the outdoor fan rotating speed can prevent frosting is that the stability of water vapor on the surface of the outdoor heat exchanger is reduced, and a large amount of water vapor on the surface of the outdoor heat exchanger is blown away by high-speed airflow. Further, the increasing amount of the outdoor fan rotating speed can be determined more accurately according to the humidity of the outdoor environment. When the outdoor environment temperature and the evaporation pressure meet the frosting condition, and the outdoor fan rotating speed does not reach the maximum rotating speed, the current outdoor fan rotating speed and the current environmental humidity of the outdoor heat exchanger are obtained. The size of the environmental humidity of the outdoor heat exchanger at the current outdoor fan rotating speed is checked. If the outdoor fan rotating speed is small and the environmental humidity is high, it indicates that the adjustable space of the outdoor fan rotating speed is large, and the reducible space of the environmental humidity by increasing the outdoor fan rotating speed is large, so a larger rotating speed change value can be set. If the outdoor fan rotating speed is small and the environmental humidity is low, it indicates that the adjustable space of the outdoor fan rotating speed is large, but the reducible space of the environmental humidity by increasing the outdoor fan rotating speed is small, so a smaller rotating speed change value can be set. If the outdoor fan rotating speed is large and the environmental humidity is still high, it indicates that although the reducible space of the environmental humidity is large, the outdoor fan rotating speed is close to the maximum rotating speed, and the adjustable space of the outdoor fan rotating speed is small, so a smaller rotating speed change value can be set. If the outdoor fan rotating speed is large and the environmental humidity is low, it indicates that the outdoor fan rotating speed is close to the maximum rotating speed, and the adjustable space of the outdoor fan rotating speed is small, and the reducible space of the environmental humidity is small, so a smaller rotating speed change value can be set. The preset comparison relationship between the environmental humidity of the heat exchanger and the outdoor fan rotating speed and the rotating speed change value can be set based on the above reasons or other needs. Based on the preset comparison relationship, the rotating speed change value corresponding to the outdoor fan rotating speed and the environmental temperature of the outdoor heat exchanger when the frosting condition is met and the outdoor fan rotating speed has an adjustable space can be determined, and the outdoor fan rotating speed of the air conditioner is increased by the rotating speed change value to reduce the stability of water vapor on the surface of the outdoor heat exchanger and blow away most of the water vapor. In this way, the environmental humidity and the outdoor fan rotating speed are used to accurately determine the rotating speed change value of the outdoor fan rotating speed when the frosting condition is met, and then a suitable rotating speed change value is selected to increase the outdoor fan rotating speed. This not only saves the energy consumption of the air conditioner, but also prolongs the frosting prevention time when the frosting prevention demand is met, and keeps the indoor environment in a comfortable state for a longer time.

[0075] Further, step S20 comprises:

[0076] obtaining the outdoor fan rotating speed;

[0077] determining a plurality of adjustment time points and a rotating speed change value corresponding to each adjustment time point according to the difference between the outdoor fan rotating speed and the maximum rotating speed;

[0078] If the adjustment time point is reached, the outdoor fan speed of the air conditioner is increased according to the speed change value.

[0079] In the embodiment, the outdoor fan speed of the air conditioner is obtained when it is determined that the frosting condition is met and the outdoor fan speed has not reached the maximum speed, i.e., the current outdoor fan speed. A difference between the outdoor fan speed and the maximum outdoor fan speed is calculated, and the difference is the increment of the outdoor fan speed if the air conditioner always meets the frosting condition. A plurality of adjustment time points after the frosting condition is met can be determined according to the size of the difference or preset information. At each adjustment time point, the outdoor fan speed needs to be increased, and a speed change value corresponding to each adjustment time point is determined according to the difference between the current outdoor fan speed and the maximum speed. The speed change values corresponding to different adjustment time points can be the same, or the speed change values can be determined according to the time interval between the adjustment time point and the next adjustment time point, or the speed change values can be gradually increased or decreased according to the time sequence of the adjustment time points. Alternatively, the later the time sequence of the adjustment time point, the greater the corresponding speed change value can be, because the later the time, the longer the time when the frosting condition is met, and the more serious the frosting trend. Selecting a larger speed change value can help prevent frosting in the later speed adjustment. If any adjustment time point is reached, the outdoor fan speed of the air conditioner is increased by the speed change value corresponding to the adjustment time point.

[0080] It should be noted that the step of increasing the outdoor fan speed of the air conditioner after the frosting condition is met can be performed once or multiple times. When performed once, the outdoor fan speed does not need to be increased to the maximum speed at one time, for example, the outdoor fan speed is increased by one gear, and the outdoor fan speed is increased by one gear again when the frosting condition is met again in the next time. When performed multiple times, the maximum speed can be taken as the target, and a plurality of adjustment time points can be divided to increase the outdoor fan speed. However, this process needs to be performed when the frosting condition is met. If it is detected that the outdoor environment temperature or the evaporation pressure does not meet the frosting condition, the adjustment time points after the detection time when the frosting condition is not met are discarded until the frosting condition is met again, and the adjustment time points and the corresponding speed change values are determined again.

[0081] In this way, after the frosting condition is met, a plurality of adjustment time points are determined in a planned manner, and the outdoor fan speed is gradually increased. If the frosting condition is always met, the outdoor fan speed can be adjusted to the maximum value. Thus, the frosting of the outdoor heat exchanger can be prevented in a planned and more timely manner, and the comfort of the air conditioner can be improved.

[0082] Alternatively, referring to Figure 2 Based on any of the above embodiments, in another embodiment of the control method of the air conditioner, the step further includes:

[0083] Step S31, obtaining a first defrosting influence factor of the indoor fan and a second defrosting influence factor of the compressor;

[0084] In the embodiment, the first defrosting influence factor corresponding to the indoor fan speed and the second defrosting influence factor corresponding to the compressor frequency of the air conditioner are obtained. The defrosting influence factor refers to a parameter capable of representing the influence degree of the defrosting effect of the air conditioner when a single operating parameter is adjusted.

[0085] Step S32, if the first defrosting influence factor is greater than the second defrosting influence factor, the indoor fan speed is controlled until the indoor fan speed reaches the adjustment threshold, and then the compressor frequency is controlled.

[0086] Step S33, if the first defrosting influence factor is less than the second defrosting influence factor, the compressor frequency is controlled until the compressor frequency reaches the adjustment threshold, and then the indoor fan speed is controlled.

[0087] In the embodiment, the indoor fan speed and the compressor frequency can be adjusted step by step, thereby delaying the time of reducing the frosting probability of the outdoor heat exchanger. The first defrosting influence factor and the second defrosting influence factor can be used to determine the priority of controlling the indoor fan speed and the indoor fan speed. If the first defrosting influence factor is greater than the second defrosting influence factor, it indicates that the defrosting effect of adjusting the indoor fan speed is better than that of adjusting the compressor frequency, and the indoor fan speed is controlled first until the indoor fan speed reaches the adjustment threshold, and then the compressor frequency is controlled. If the first defrosting influence factor is less than the second defrosting influence factor, it indicates that the defrosting effect of adjusting the indoor fan speed is worse than that of adjusting the compressor frequency, and the compressor frequency is controlled first until the compressor frequency reaches the adjustment threshold, and then the indoor fan speed is controlled.

[0088] Optionally, the first heating influence factor of the indoor fan and the second heating influence factor of the compressor can also be obtained. If the first heating influence factor is greater than the second heating influence factor, it indicates that the heating effect of adjusting the indoor fan speed is better than that of adjusting the compressor frequency, and the indoor comfort is improved, and the indoor fan speed is controlled first until the indoor fan speed reaches the adjustment threshold, and then the compressor frequency is controlled. If the first heating influence factor is less than the second heating influence factor, it indicates that the heating effect of adjusting the indoor fan speed is worse than that of adjusting the compressor frequency, and the compressor frequency is controlled first until the compressor frequency reaches the adjustment threshold, and then the indoor fan speed is controlled.

[0089] Further, the first defrosting influence factor corresponding to the indoor fan speed and the second defrosting influence factor corresponding to the compressor frequency of the air conditioner can also be obtained, and the first heating influence factor corresponding to the indoor fan speed and the second heating influence factor corresponding to the compressor frequency of the air conditioner can also be obtained. The heating influence factor refers to a parameter capable of representing the influence degree of adjusting a single operating parameter on the comfort of the air conditioner. The heating influence factor and the defrosting influence factor can be determined in advance through experiments or theoretical derivation. The heating influence factors or the defrosting influence factors corresponding to different operating parameters, such as the outdoor fan speed, the indoor fan speed and the compressor frequency, are generally different.

[0090] Different weight values can be set for the heating influence factor and the defrosting influence factor due to different operating requirements. The first heating influence factor and the first defrosting influence factor of the indoor fan speed and the heating influence factor and the defrosting influence factor corresponding to the compressor frequency are weighted and summed by using the preset weight values, the first adjustment priority corresponding to the indoor fan speed and the second adjustment priority corresponding to the compressor frequency are obtained according to the weighted sum result, if the first adjustment priority is greater than the second adjustment priority, the indoor fan speed is controlled until the indoor fan speed reaches the adjustment threshold, and then the compressor frequency is controlled; if the first adjustment priority is less than the second adjustment priority, the compressor frequency is controlled until the compressor frequency reaches the adjustment threshold, and then the indoor fan speed is controlled.

[0091] In the technical solution disclosed in the embodiment, the adjustment priorities of the indoor fan speed and the compressor frequency are determined by the defrosting influence factors corresponding to the indoor fan speed and the compressor frequency, and after the target operation is adjusted to the threshold value according to the adjustment priorities, a new target operation is adjusted. Each time the indoor fan speed and the compressor frequency are controlled, for example, the indoor fan speed or the compressor frequency is reduced once, the frosting probability can be reduced, which can reduce the frosting probability on the one hand and prolong the time for preventing frosting on the other hand, effectively prolong the frosting time and avoid making all operating parameters reach the adjustment threshold value to prevent frosting in advance.

[0092] Optionally, with reference to Figure 3 , based on any of the above embodiments, in another embodiment of the control method of the air conditioner, the step S30 comprises:

[0093] In step S34, the surface temperature of the indoor heat exchanger of the air conditioner is obtained.

[0094] In the embodiment, the surface temperature of the indoor heat exchanger of the air conditioner is obtained. The surface temperature of the indoor heat exchanger of the air conditioner should not be too high, otherwise the reliability of the air conditioner will be affected, causing the air conditioner to stop or malfunction.

[0095] Step S35, if the surface temperature is greater than the preset limit frequency temperature, the compressor frequency is controlled.

[0096] In the embodiment, the surface temperature of the indoor heat exchanger is compared with the preset limit frequency temperature, which is related to the compressor and can be set according to the air conditioner or compressor model. After the compressor exhausts to the indoor heat exchanger, the indoor fan needs to have sufficient speed to dissipate the high-temperature and high-pressure refrigerant. If the surface temperature of the indoor heat exchanger is greater than the limit frequency temperature, the indoor fan speed cannot be reduced to affect the heat dissipation capacity of the indoor unit. Therefore, when the outdoor fan speed reaches the maximum speed and the surface temperature of the indoor heat exchanger is greater than the preset limit frequency temperature, the compressor frequency is controlled to reduce the compressor frequency of the air conditioner, and reducing the compressor frequency of the air conditioner can reduce the exhaust temperature, thereby improving the reliability of the air conditioner.

[0097] Step S36, if the surface temperature is less than or equal to the preset limit frequency temperature, the indoor fan speed is controlled until the indoor fan speed reaches the adjustment threshold, and then the compressor frequency is controlled.

[0098] In the embodiment, if the surface temperature of the indoor heat exchanger is less than or equal to the preset limit frequency temperature, it indicates that the operation of the air conditioner is relatively stable, and the reliability is guaranteed. The indoor fan speed can be controlled to reduce the indoor fan speed of the air conditioner to prevent frosting, and reducing the indoor fan speed of the air conditioner can better guarantee the heating effect than reducing the compressor frequency. After the indoor fan speed reaches the adjustment threshold, the compressor frequency is controlled to reduce the compressor frequency of the air conditioner.

[0099] In order to better understand, some specific application scenarios are provided below:

[0100] Referring to Figure 5 After the air conditioner is operated in heating mode, the outdoor environment temperature is obtained. If the outdoor environment temperature < 4℃, the evaporating pressure of the outdoor heat exchanger is obtained. If the evaporating pressure of the outdoor heat exchanger < 0.65MPa is detected for 3min, it is determined that the frosting condition is met, and the outdoor fan speed is increased by one gear. If the outdoor environment temperature < 4℃, the evaporating pressure of the outdoor heat exchanger < 0.65MPa is detected for 3min, the outdoor fan speed is increased by one gear again, until the outdoor fan speed reaches the maximum speed.

[0101] If the outdoor fan speed reaches the maximum speed, but the outdoor ambient temperature is still less than 4℃, and the outdoor heat exchanger evaporating pressure is less than 0.65MPa for 3 minutes, the indoor fan speed of the air conditioner or the compressor frequency of the air conditioner can be reduced. The surface temperature Tintube of the indoor heat exchanger is obtained. If Tintube is greater than Tlimit frequency temperature, the compressor frequency of the air conditioner is reduced by one gear until the compressor frequency reaches the adjustment threshold. If Tintube is greater than or equal to Tlimit frequency temperature, the indoor fan speed of the air conditioner is reduced by one gear until the indoor fan speed reaches the adjustment threshold. If the indoor fan speed reaches the adjustment threshold, but the outdoor ambient temperature is still less than 4℃, and the outdoor heat exchanger evaporating pressure is less than 0.65MPa for 3 minutes, the indoor fan speed of the air conditioner or the compressor frequency of the air conditioner can be reduced.

[0102] In the technical solution disclosed in the embodiment, before the compressor frequency of the air conditioner is controlled, the size relationship between the surface temperature of the indoor heat exchanger and the preset limit frequency temperature is detected, so as to determine whether the indoor fan speed of the air conditioner can be reduced, thereby preventing frosting under the premise of ensuring safe and reliable operation of the air conditioner.

[0103] Optionally, based on any of the above embodiments, in still another embodiment of the control method of the air conditioner, after the step S30, the method further comprises:

[0104] If the indoor fan speed and the compressor frequency both reach the adjustment threshold, the surface image of the outdoor heat exchanger is obtained.

[0105] The surface image is identified based on a frosting identification model to obtain a frosting identification result of the outdoor heat exchanger.

[0106] According to the frosting identification result, the air conditioner is controlled to switch to the refrigeration mode for defrosting, and after successful defrosting, the outdoor fan speed, the indoor fan speed and the compressor frequency are set to initial values.

[0107] In this embodiment, if the frosting condition is always met, the air conditioner repeatedly performs increasing the outdoor fan speed, controlling the indoor fan speed to decrease or controlling the compressor frequency to decrease to prevent frosting until each of the operating parameters reaches an adjustment threshold. It should be noted that the adjustment threshold refers to the maximum threshold to which the indoor fan speed and the compressor frequency can be adjusted. If the surface temperature of the indoor heat exchanger is greater than the frequency limiting temperature, in order to ensure the reliability of the air conditioner, the indoor fan speed cannot be controlled to decrease, and thus the indoor fan speed has reached the adjustment threshold. After reaching the adjustment threshold, if the air conditioner is still in the frosting environment, frosting may occur. An image acquisition device, such as an infrared image sensor, can be arranged near the outdoor heat exchanger to obtain the image of the surface of the outdoor heat exchanger. Alternatively, the surface image of the outdoor heat exchanger can be obtained at intervals after the indoor fan speed and the compressor frequency both reach the adjustment threshold. A frosting identification model specially used for identifying the frosting condition of the surface of the outdoor heat exchanger is trained, the obtained surface image of the outdoor heat exchanger is input into the frosting identification model for identification, and a frosting identification result of the outdoor heat exchanger at the time of collecting the surface image is obtained. According to the frosting identification result, whether the outdoor heat exchanger is frosted and the frosting severity can be determined. If the outdoor heat exchanger is frosted, the air conditioner can be controlled to switch to the refrigeration mode for defrosting. In the refrigeration mode, the outdoor heat exchanger becomes a condenser and releases heat to the outside, which can quickly melt the surface frosting.

[0108] Further, the frosting severity can also be determined according to the frosting identification result, the compressor frequency, the outdoor fan speed and the indoor fan speed of the refrigeration mode can be determined according to the frosting severity and a preset comparison relationship, and the refrigeration mode is operated according to the compressor frequency, the outdoor fan speed and the indoor fan speed to accurately defrost.

[0109] After the refrigeration mode is operated, the frosting identification result can also be obtained by collecting the surface image of the outdoor heat exchanger, and it is further determined whether the defrosting is successful. After the defrosting is successful, the heating mode is switched back, the outdoor fan speed, the indoor fan speed and the compressor frequency are set to initial values, the initial values are the outdoor fan speed, the indoor fan speed and the compressor frequency when the air conditioner is normally operated before the operations of increasing the outdoor fan speed, controlling the indoor fan speed and controlling the compressor frequency are performed, and step S10 is re-executed.

[0110] In the technical solution disclosed in this embodiment, after each operating parameter reaches the adjustment threshold, the frosting condition of the surface of the outdoor heat exchanger is accurately identified based on the surface image of the outdoor heat exchanger, and then the defrosting is accurately performed. Since the frosting period is delayed by gradually adjusting the outdoor fan speed, the indoor fan speed and the compressor frequency to the threshold to prevent frosting, the defrosting period is prolonged, the defrosting operation is not frequently performed to affect the indoor temperature fluctuation, and the frosting condition is bottomed out for defrosting, thereby improving the comfort of the air conditioner.

[0111] The embodiment also provides a control device of an air conditioner, which can be integrated in the air conditioner. For example, as shown in Figure 6 The control device of the air conditioner can include:

[0112] The acquisition module 1001 is configured to acquire an outdoor environment temperature of the air conditioner and an evaporation pressure of an outdoor heat exchanger;

[0113] The first control module 1002 is configured to increase a rotation speed of an outdoor fan of the air conditioner if the outdoor environment temperature and the evaporation pressure meet a frosting condition.

[0114] The second control module 1003 is configured to control a rotation speed of an indoor fan of the air conditioner and a frequency of a compressor of the air conditioner if the rotation speed of the outdoor fan reaches a maximum rotation speed, so as to reduce a frosting probability of the outdoor heat exchanger.

[0115] The second control module 1003 is further configured to acquire a first defrosting influence factor of the indoor fan and a second defrosting influence factor of the compressor;

[0116] If the first defrosting influence factor is greater than the second defrosting influence factor, the rotation speed of the indoor fan is controlled until the rotation speed of the indoor fan reaches an adjustment threshold, and then the frequency of the compressor is controlled.

[0117] If the first defrosting influence factor is less than the second defrosting influence factor, the frequency of the compressor is controlled until the frequency of the compressor reaches an adjustment threshold, and then the rotation speed of the indoor fan is controlled.

[0118] The second control module 1003 is further configured to

[0119] Acquire a surface temperature of an indoor heat exchanger of the air conditioner;

[0120] If the surface temperature is greater than a preset frequency limiting temperature, the frequency of the compressor is controlled.

[0121] If the surface temperature is less than or equal to the preset frequency limiting temperature, the rotation speed of the indoor fan is controlled until the rotation speed of the indoor fan reaches an adjustment threshold, and then the frequency of the compressor is controlled.

[0122] The first control module 1002 is further configured to acquire the rotation speed of the outdoor fan and an environment humidity of the outdoor heat exchanger;

[0123] Determine a rotation speed change value of the rotation speed of the outdoor fan according to the environment humidity, the rotation speed of the outdoor fan and a preset comparison relationship;

[0124] Increase the rotation speed of the outdoor fan of the air conditioner according to the rotation speed change value.

[0125] The first control module 1002 is also used to acquire the rotational speed of the outdoor fan;

[0126] Based on the difference between the outdoor fan speed and the maximum speed, multiple adjustment time points and the speed change value corresponding to each adjustment time point are determined;

[0127] If the adjustment time point is reached, the outdoor fan speed of the air conditioner is increased according to the change in speed.

[0128] The air conditioner control device also includes a defrosting module, which is used to acquire a surface image of the outdoor heat exchanger if both the indoor fan speed and the compressor frequency reach the adjustment threshold.

[0129] The surface image is identified based on the frost recognition model to obtain the frost recognition result of the outdoor heat exchanger;

[0130] Based on the frost recognition result, the air conditioner is controlled to switch to cooling mode for defrosting, and after successful defrosting, the outdoor fan speed, the indoor fan speed, and the compressor frequency are set to their initial values.

[0131] The acquisition module 1001 is further configured to acquire the duration of the evaporation pressure being lower than the preset frosting pressure when the outdoor ambient temperature is less than or equal to the preset frosting temperature.

[0132] If the duration reaches the preset duration, the frosting condition is met.

[0133] like Figure 7 As shown, Figure 7 This is a schematic diagram of the structure of an air conditioner provided in an embodiment of the present invention. The air conditioner 1100 includes a processor 1101 with one or more processing cores, a memory 1102 with one or more computer-readable storage media, and a computer program stored on the memory 1102 and executable on the processor. The processor 1101 and the memory 1102 are electrically connected. Those skilled in the art will understand that the air conditioner structure shown in the figure does not constitute a limitation on the air conditioner, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0134] The processor 1101 is the control center of the air conditioner 1100, connects various parts of the air conditioner 1100 through various interfaces and lines, executes various functions of the air conditioner 1100 and processes data by running or loading software programs and / or units stored in the memory 1102 and calling data stored in the memory 1102, thereby monitoring the air conditioner 1100 as a whole. The processor 1101 can be a processor CPU, a graphics processor GPU, a network processor (NP), etc., and can implement or execute various methods, steps and logic block diagrams disclosed in the embodiments of the application.

[0135] In the embodiments of the application, the processor 1101 in the air conditioner 1100 loads instructions corresponding to processes of one or more application programs into the memory 1102, and runs the application programs stored in the memory 1102 by the processor 1101, thereby implementing various functions, for example:

[0136] Obtaining the outdoor environment temperature of the air conditioner and the evaporation pressure of the outdoor heat exchanger;

[0137] If the outdoor environment temperature and the evaporation pressure meet the frosting condition, increasing the outdoor fan rotating speed of the air conditioner;

[0138] If the outdoor fan rotating speed reaches the maximum rotating speed, controlling the indoor fan rotating speed of the air conditioner and the compressor frequency of the air conditioner to reduce the frosting probability of the outdoor heat exchanger.

[0139] The specific implementation of each operation can refer to the previous embodiments, which will not be described here.

[0140] Optionally, as shown in Figure 7 The air conditioner 1100 further includes a touch display screen 1103, a radio frequency circuit 1104, an audio circuit 1105, an input unit 1106 and a power supply 1107. The processor 1101 is electrically connected with the touch display screen 1103, the radio frequency circuit 1104, the audio circuit 1105, the input unit 1106 and the power supply 1107 respectively. Those skilled in the art can understand that Figure 7 The air conditioner structure shown in the above embodiments does not constitute a limitation on the air conditioner, and can include more or fewer components than the drawings, or combine certain components, or different component arrangements.

[0141] The touch display screen 1103 can be used to display a graphical user interface and receive operation instructions generated by user acting on the graphical user interface. The touch display screen 1103 can include a display panel and a touch panel. The display panel can be used to display information input by the user or provided to the user and various graphical user interfaces of the air conditioner, which can be composed of graphics, text, icons, videos and any combination thereof. Optionally, the display panel can be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc. The touch panel can be used to collect touch operations of the user thereon or adjacent thereto (such as operations of the user using a finger, a stylus or any suitable object or accessory on or adjacent to the touch panel), and generate corresponding operation instructions, and the operation instructions execute corresponding programs. Optionally, the touch panel can include two parts of a touch detection device and a touch controller. The touch detection device detects the touch position of the user and detects signals generated by the touch operation, and transmits the signals to the touch controller; the touch controller receives the touch information from the touch detection device, and converts it into touch coordinates, and then sends it to the processor 1101, and can also receive commands from the processor 1101 and execute them. The touch panel can cover the display panel, and when the touch panel detects a touch operation thereon or adjacent thereto, it transmits to the processor 1101 to determine the type of the touch event, and then the processor 1101 provides corresponding visual output on the display panel according to the type of the touch event. In the embodiments of the present application, the touch panel and the display panel can be integrated into the touch display screen 1103 to realize the input and output functions. However, in some embodiments, the touch panel and the touch panel can realize the input and output functions as two independent components. That is, the touch display screen 1103 can also realize the input function as part of the input unit 1106.

[0142] The radio frequency circuit 1104 can be used to transceive radio frequency signals to establish wireless communication with network devices or other air conditioners, and transceive signals between network devices or other air conditioners.

[0143] The audio circuit 1105 can be used to provide an audio interface between the user and the air conditioner through the speaker and the microphone. The audio circuit 1105 can convert the received audio data into an electrical signal and transmit it to the speaker, which converts it into a sound signal output. On the other hand, the microphone collects the sound signal and converts it into an electrical signal, which is received by the audio circuit 1105 and converted into audio data. After being processed by the processor 1101, the audio data is transmitted to another air conditioner through the radio frequency circuit 1104, or output to the memory 1102 for further processing. The audio circuit 1105 can also include an earphone jack to provide communication between an external earphone and the air conditioner.

[0144] The input unit 1106 can be configured to receive inputted digital, character information or user feature information (e.g. fingerprint, iris, face information, etc.), and generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control.

[0145] The power supply 1107 is configured to supply power to various components of the air conditioner 1100. Optionally, the power supply 1107 can be logically connected to the processor 1101 through a power management system, so as to realize functions such as management of charging, discharging and power consumption management through the power management system. The power supply 1107 can also include one or more than one direct current or alternating current power supply, a recharging system, a power failure detection circuit, a power converter or inverter, a power state indicator and any other components.

[0146] Although Figure 7 The air conditioner 1100 can also include a camera, a sensor, a wireless fidelity module, a Bluetooth module, etc. which are not shown in the embodiments and will not be described herein.

[0147] In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0148] Those skilled in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructions, or by relevant hardware controlled by the instructions, which can be stored in a computer readable storage medium and loaded and executed by a processor.

[0149] To this end, the embodiments of the present application provide a computer readable storage medium, which stores a plurality of computer programs capable of being loaded by a processor to execute any one of the control methods of the air conditioner provided by the embodiments of the present application. The computer program can execute the steps of the control method of the air conditioner as follows:

[0150] obtaining an outdoor environment temperature of the air conditioner and an evaporation pressure of an outdoor heat exchanger of the air conditioner;

[0151] if the outdoor environment temperature and the evaporation pressure satisfy a frosting condition, increasing a rotation speed of an outdoor fan of the air conditioner;

[0152] if the rotation speed of the outdoor fan reaches a maximum rotation speed, controlling a rotation speed of an indoor fan of the air conditioner and a frequency of a compressor of the air conditioner to reduce a frosting probability of the outdoor heat exchanger.

[0153] The specific implementation of each operation can be referred to the previous embodiments, which will not be described herein.

[0154] The computer readable storage medium can include a read only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, etc.

[0155] Due to the computer program stored in the computer readable storage medium, any of the control methods of the air conditioner provided by the embodiments of the present application can be executed, thus the beneficial effects of any of the control methods of the air conditioner provided by the embodiments of the present application can be achieved, which will be described in detail in the foregoing embodiments and will not be repeated here.

[0156] In the above-mentioned embodiments of the control device of the air conditioner, the computer readable storage medium, the air conditioner and the computer program product, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments. It can be clearly understood by those skilled in the art that, for the convenience and brevity of description, the specific working process of the above-mentioned control device of the air conditioner, computer readable storage medium, computer program product, air conditioner and its corresponding units and the beneficial effects brought by them can be referred to the description of the control method of the air conditioner in the above-mentioned embodiments, and will not be repeated here.

[0157] The above-mentioned control method, device, air conditioner, computer readable storage medium and computer program product of the air conditioner provided by the embodiments of the present application are described in detail, and the principle and implementation manner of the present application are described by applying specific examples; the above-mentioned embodiments are only used to help understand the method of the present application and its core idea; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manner and application range will be changed, and the above-mentioned description should not be understood as the limitation of the present application.

Claims

1. A method for controlling an air conditioner, characterized in that, The air conditioner control method includes: Obtain the outdoor ambient temperature and the evaporation pressure of the outdoor heat exchanger of the air conditioner; If the outdoor ambient temperature and the evaporation pressure meet the frosting conditions, then increase the outdoor fan speed of the air conditioner; If the outdoor fan speed reaches the maximum speed, the indoor fan speed and the compressor frequency of the air conditioner are controlled to reduce the probability of frosting on the outdoor heat exchanger. The control of the indoor fan speed and the compressor frequency of the air conditioner includes: Obtain the first defrosting influence factor of the indoor fan and the second defrosting influence factor of the compressor; If the first defrosting influence factor is greater than the second defrosting influence factor, the indoor fan speed is controlled until the indoor fan speed reaches the adjustment threshold. Then the compressor frequency is controlled. If the first defrosting influence factor is greater than the second defrosting influence factor, it indicates that adjusting the indoor fan speed is better than adjusting the compressor frequency. If the first defrosting influence factor is less than the second defrosting influence factor, the compressor frequency is controlled until the compressor frequency reaches the adjustment threshold, at which point the indoor fan speed is controlled.

2. The air conditioning control method as described in claim 1, characterized in that, The control of the indoor fan speed and the compressor frequency of the air conditioner includes: Obtain the surface temperature of the indoor heat exchanger of the air conditioner; If the surface temperature is greater than the preset frequency limiting temperature, the compressor frequency is controlled. If the surface temperature is less than or equal to the preset frequency limiting temperature, the indoor fan speed is controlled until the indoor fan speed reaches the adjustment threshold, at which point the compressor frequency is controlled.

3. The air conditioning control method as described in claim 1, characterized in that, Increasing the outdoor fan speed of the air conditioner includes: The outdoor fan speed and the ambient humidity of the outdoor heat exchanger are obtained. The change in the outdoor fan speed is determined based on the ambient humidity, the outdoor fan speed, and a preset reference relationship. The outdoor fan speed of the air conditioner is increased according to the change in rotation speed.

4. The air conditioning control method as described in claim 1, characterized in that, The step of increasing the outdoor fan speed of the air conditioner includes: Obtain the outdoor fan speed; Based on the difference between the outdoor fan speed and the maximum speed, multiple adjustment time points and the speed change value corresponding to each adjustment time point are determined; If the adjustment time point is reached, the outdoor fan speed of the air conditioner is increased according to the change in speed.

5. The air conditioning control method as described in claim 1, characterized in that, After controlling the indoor fan speed and compressor frequency of the air conditioner, the method further includes: If both the indoor fan speed and the compressor frequency reach the adjustment threshold, then obtain a surface image of the outdoor heat exchanger; The surface image is identified based on the frost recognition model to obtain the frost recognition result of the outdoor heat exchanger; Based on the frost recognition result, the air conditioner is controlled to switch to cooling mode for defrosting, and after successful defrosting, the outdoor fan speed, the indoor fan speed, and the compressor frequency are set to their initial values.

6. The air conditioning control method according to any one of claims 1-5, characterized in that, After obtaining the outdoor ambient temperature and the evaporation pressure of the outdoor heat exchanger of the air conditioner, the method further includes: If the outdoor ambient temperature is less than or equal to the preset frosting temperature, then when the evaporation pressure is detected to be lower than the preset frosting pressure, the duration of the evaporation pressure being lower than the preset frosting pressure is obtained; If the duration reaches the preset duration, the frosting condition is met.

7. A control device for an air conditioner, characterized in that, The control device for the air conditioner includes: The acquisition module is used to acquire the outdoor ambient temperature and the evaporation pressure of the outdoor heat exchanger of the air conditioner; The first control module is used to increase the outdoor fan speed of the air conditioner if the outdoor ambient temperature and the evaporation pressure meet the frosting conditions. The second control module is used to control the indoor fan speed and the compressor frequency of the air conditioner if the outdoor fan speed reaches the maximum speed, so as to reduce the probability of frosting on the outdoor heat exchanger. The control of the indoor fan speed and the compressor frequency of the air conditioner includes: Obtain the first defrosting influence factor of the indoor fan and the second defrosting influence factor of the compressor; If the first defrosting influence factor is greater than the second defrosting influence factor, the indoor fan speed is controlled until the indoor fan speed reaches the adjustment threshold. Then the compressor frequency is controlled. If the first defrosting influence factor is greater than the second defrosting influence factor, it indicates that adjusting the indoor fan speed is better than adjusting the compressor frequency. If the first defrosting influence factor is less than the second defrosting influence factor, the compressor frequency is controlled until the compressor frequency reaches the adjustment threshold, at which point the indoor fan speed is controlled.

8. An air conditioner, characterized in that, It includes a processor and a memory, the memory storing a computer program that, when executed by the processor, causes the processor to perform the steps of the control method for the air conditioner according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a computer program that, when run on an electronic device, causes the electronic device to perform the steps of the control method for the air conditioner according to any one of claims 1 to 6.

Images