Self-cleaning treatment method for outdoor unit of air conditioner

Abstract

A self-cleaning treatment method for an outdoor unit of an air conditioner. The self-cleaning treatment method for an outdoor unit of an air conditioner comprises: acquiring an indoor ambient temperature T1 and an outdoor ambient temperature T4; determining whether the indoor ambient temperature T1 is lower than the maximum indoor temperature Tmax1 for heating operation and higher than the minimum indoor temperature Tmin1 for heating operation, and simultaneously determining whether the outdoor ambient temperature T4 is lower than the maximum outdoor temperature Tmax2 for heating operation and higher than the minimum outdoor temperature Tmin2 for heating operation; and if the indoor ambient temperature T1 is lower than the maximum indoor temperature Tmax1 for heating operation and higher than the minimum indoor temperature Tmin1 for heating operation, and the outdoor ambient temperature T4 is lower than the maximum outdoor temperature Tmax2 for heating operation and higher than the minimum outdoor temperature Tmin2 for heating operation, a compressor operating, and an air conditioner running in a heating mode.

Description

Self-cleaning method for air conditioner outdoor unit

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based on and claims priority to Chinese Patent Application No. 202410542752.4, filed on April 30, 2024, the entire contents of which is incorporated herein by reference. TECHNICAL FIELD

[0003] The present application mainly relates to the field of air treatment equipment, in particular to a self-cleaning method for an air conditioner outdoor unit. BACKGROUND

[0004] In the prior art, most air conditioner outdoor units are placed in outdoor environments, and dust and impurity particles will adhere to the air conditioner outdoor unit. When the dust and impurity particles accumulate too much, they will cause poor heat exchange of the air conditioner and cause performance degradation of the air conditioner.

[0005] SUMMARY

[0006] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a self-cleaning method for an air conditioner outdoor unit, which facilitates frosting on the outdoor unit, defrosting on the outdoor unit after frosting, and water washing and cleaning of dust on the outdoor unit.

[0007] According to the self-cleaning method for an air conditioner outdoor unit of the present application, the indoor environment temperature T1 and the outdoor environment temperature T4 are obtained; it is determined whether the indoor environment temperature T1 is lower than the maximum indoor temperature T max1 during heating operation and higher than the minimum indoor temperature T min1 during heating operation, and whether the outdoor environment temperature T4 is lower than the maximum outdoor temperature T max2 during heating operation and higher than the minimum outdoor temperature T min2 If the indoor environment temperature T1 is lower than the maximum indoor temperature T max1 during heating operation and higher than the minimum indoor temperature T min1 during heating operation, and the outdoor environment temperature T4 is lower than the maximum outdoor temperature T max2 during heating operation and higher than the minimum outdoor temperature T min2 during heating operation, the compressor is controlled to operate, and the air conditioner operates in heating mode.

[0008] According to the self-cleaning method for an air conditioner outdoor unit of the present application, by satisfying the conditions that the indoor environment temperature T1 is lower than the maximum indoor temperature T max1and higher than the minimum indoor temperature T min1 , the outdoor environment temperature T4 is lower than the maximum outdoor temperature T max2 and higher than the minimum outdoor temperature T min2 , the air conditioner can meet the operation of the heating mode, the outdoor unit can blow out cold air to the outside, which is convenient for the outdoor unit to realize frosting, and the dust on the outdoor unit can be washed away with the water generated during defrosting, thereby achieving the effect of water cleaning.

[0009] In some embodiments of the present application, the air conditioner outdoor unit self-cleaning control method further comprises adjusting the operating frequency f of the compressor according to the outdoor environment temperature T4.

[0010] In some embodiments of the present application, the operating frequency f of the compressor and the outdoor environment temperature T4 are negatively correlated.

[0011] In some embodiments of the present application, the adjusting the operating frequency f of the compressor according to the outdoor environment temperature T4 comprises dividing the outdoor environment temperature T4 into a plurality of temperature intervals, each temperature interval corresponding to a preset compressor frequency value; according to the temperature interval in which the outdoor environment temperature T4 is located, adjusting the compressor frequency to the preset compressor frequency value corresponding to the temperature interval.

[0012] In some embodiments of the present application, the air conditioner outdoor unit self-cleaning control method further comprises controlling the outdoor fan to stop running for a first preset time.

[0013] In some embodiments of the present application, the air conditioner outdoor unit self-cleaning control method further comprises adjusting the first preset time according to the outdoor environment temperature T4.

[0014] In some embodiments of the present application, the air conditioner outdoor unit self-cleaning control method further comprises adjusting the blowing angle of the indoor unit to a straight-blowing-preventing angle.

[0015] In some embodiments of the present application, the air conditioner outdoor unit self-cleaning control method further comprises controlling the indoor fan to run at the highest wind block.

[0016] In some embodiments of the present application, the air conditioner outdoor unit self-cleaning control method further comprises closing the electric auxiliary heating function in the indoor unit and the condenser frosting protection function of the outdoor unit.

[0017] In some embodiments of the present application, the air conditioner outdoor unit self-cleaning control method further comprises determining that the air conditioner operates in the heating mode for a second preset time; and controlling the compressor to stop running.

[0018] In some embodiments of the present application, the air conditioner outdoor unit self-cleaning control method further comprises determining whether the outdoor environment temperature T4 is less than a defrosting temperature Te; if the outdoor environment temperature T4 is less than the defrosting temperature Te, controlling the compressor to operate, and the air conditioner to operate in a cooling mode.

[0019] In some embodiments of the present application, the air conditioner outdoor unit self-cleaning control method further comprises determining that the air conditioner operates in the cooling mode for a third preset time; and controlling the compressor to stop operating.

[0020] In some embodiments of the present application, the air conditioner outdoor unit self-cleaning control method further comprises controlling the outdoor fan to reverse rotation for a fourth preset time.

[0021] In some embodiments of the present application, the air conditioner outdoor unit self-cleaning control method further comprises determining whether the outdoor environment temperature T4 is greater than or equal to the defrosting temperature Te; if the outdoor environment temperature T4 is greater than or equal to the defrosting temperature Te, controlling the outdoor fan to reverse rotation for a fourth preset time.

[0022] In some embodiments of the present application, the air conditioner outdoor unit self-cleaning control method further comprises determining whether the indoor environment temperature T1 is greater than or equal to a maximum indoor temperature T max1 for heating operation, and / or less than or equal to a minimum indoor temperature T min1 for heating operation, and simultaneously determining whether the outdoor environment temperature T4 is greater than or equal to a maximum outdoor temperature T max2 for heating operation, and / or less than or equal to a minimum outdoor temperature T min2 for heating operation; if the indoor environment temperature T1 is greater than or equal to the maximum indoor temperature T max1 for heating operation, and / or the indoor environment temperature T1 is less than or equal to the minimum indoor temperature T min1 for heating operation, and / or the outdoor environment temperature T4 is greater than or equal to the maximum outdoor temperature T max2 for heating operation, and / or the outdoor environment temperature T4 is less than or equal to the minimum outdoor temperature T min2 for heating operation; controlling the outdoor fan to reverse rotation for a fourth preset time.

[0023] In some embodiments of the present application, while controlling the outdoor fan to reverse rotation, the air conditioner outdoor unit self-cleaning control method further comprises controlling an indoor fan to rotate.

[0024] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0025] FIG. 1 is a flowchart of an air conditioner outdoor unit self-cleaning control method according to an embodiment of the present application. DETAILED DESCRIPTION

[0026] Embodiments of the present application are described in detail below with reference to examples thereof shown in the attached drawings, wherein the same or similar components have the same or similar designations throughout the several views and description, which are exemplary only and are intended for the purpose of explanation only and are not intended as limitations on the present application.

[0027] In the description of the present application, it is to be understood that the orientations or positional relationships indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientations or positional relationships shown in the drawings, and are merely for the purpose of facilitating the description of the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be construed as limiting the present application. In addition, features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specified and limited.

[0028] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0029] The air conditioner outdoor unit self-cleaning control method according to an embodiment of the present application is described below with reference to FIG. 1.

[0030] According to the air conditioner outdoor unit self-cleaning control method of the present application, the air conditioner comprises an indoor unit and an outdoor unit.

[0031] Specifically, as shown in FIG. 1, the air conditioner outdoor unit self-cleaning control method comprises obtaining an indoor environment temperature T1 and an outdoor environment temperature T4.

[0032] Then, as shown in FIG. 1, it is determined whether the indoor environment temperature T1 is lower than the maximum indoor temperature T max1 and higher than the minimum indoor temperature T min1simultaneously determine whether the outdoor environment temperature T4 is lower than the maximum outdoor temperature T max2 for heating operation and higher than the minimum outdoor temperature T min2 for heating operation. If the indoor environment temperature T1 is lower than the maximum indoor temperature T max1 for heating operation and higher than the minimum indoor temperature T min1 for heating operation, the outdoor environment temperature T4 is lower than the maximum outdoor temperature T max2 for heating operation and higher than the minimum outdoor temperature T min2 for heating operation, the compressor is controlled to operate, and the air conditioner operates in the heating mode.

[0033] It can be understood that when the indoor environment temperature T1 is higher than the maximum indoor temperature T max1 for heating operation, the indoor temperature is relatively high, and if the air conditioner operates in the heating mode, it can cause a large waste of energy. In addition, if the air conditioner operates in the heating mode for a long time when the indoor temperature is already relatively high, it can cause damage to the parts of the air conditioner and reduce the service life of the air conditioner. When the indoor environment temperature T1 is lower than the minimum indoor temperature T min1 for heating operation, if the air conditioner operates in the heating mode, the heating mode of the air conditioner can not operate stably. For example, it can appear that the heating effect is poor, the temperature fluctuates greatly, or the air conditioner frequently stops, and due to the increase in the load of the air conditioner, the air conditioner operates unstably, and the air conditioner can need more frequent maintenance and maintenance when operating in the heating mode.

[0034] It can be understood that when the outdoor environment temperature T4 is higher than the maximum outdoor temperature T max2 for heating operation, if the air conditioner operates in the heating mode, the compressor needs to bear a greater load to generate heat, and in a high-temperature environment, the compressor can overheat due to excessive work, thereby affecting its performance and service life. In addition, when the outdoor temperature is too high, the efficiency of the refrigerant in the air conditioner can decrease in the process of absorbing and releasing heat. This can cause the heating effect to weaken, and it can even appear that the set temperature cannot be reached. When the outdoor environment temperature T4 is lower than the minimum outdoor temperature T min2 for heating operation, if the air conditioner operates in the heating mode, the air conditioner is difficult to obtain enough heat from the outdoor environment, resulting in poor heating effect, and in a low-temperature environment, the lubricating oil inside the compressor can become viscous, affecting the normal operation of the compressor.

[0035] In order to meet the requirements that the indoor environment temperature T1 is lower than the maximum indoor temperature T max1 for heating operation and higher than the minimum indoor temperature T min1 for heating operation, the outdoor environment temperature T4 is lower than the maximum outdoor temperature T max2 for heating operation and higher than the minimum outdoor temperature T min2When the air conditioner is in heating mode, the outdoor unit can blow out cold air, which facilitates frost formation on the outdoor unit. After the outdoor unit is frosted, it can be defrosted. The dust on the outdoor unit can be washed away with the water generated during the defrosting process, which serves as a water washing and cleaning function.

[0036] According to the self-cleaning control method for the outdoor unit of an air conditioner in this application embodiment, the method ensures that the indoor ambient temperature T1 is lower than the maximum indoor temperature T during heating operation. max1 And higher than the minimum indoor temperature T for heating operation min1 The outdoor ambient temperature T4 is lower than the maximum outdoor temperature T for heating operation. max2 And higher than the minimum outdoor temperature T for heating operation min2 When the air conditioner is in heating mode, the outdoor unit can blow out cold air, which facilitates frost formation on the outdoor unit. After the outdoor unit is frosted, it can be defrosted. The dust on the outdoor unit can be washed away with the water generated during the defrosting process, which serves as a water washing and cleaning function.

[0037] In some embodiments of this application, as shown in Figure 1, the self-cleaning control method for the outdoor unit of an air conditioner further includes adjusting the operating frequency f of the compressor according to the outdoor ambient temperature T4. The operating frequency f of the compressor can be adjusted to a value conducive to frosting based on the outdoor ambient temperature T4, thereby facilitating defrosting of the outdoor unit after frosting. Dust on various parts of the outdoor unit can be washed away with the water generated during defrosting, achieving a water-washing cleaning effect.

[0038] In some embodiments of this application, the compressor's operating frequency f is negatively correlated with the outdoor ambient temperature T4. It is understood that when the outdoor ambient temperature is low, the heating demand increases, and the compressor needs a higher operating frequency to generate sufficient heat; when the outdoor ambient temperature is moderate or high, the heating demand decreases, and the compressor can reduce its operating frequency to save energy.

[0039] In some embodiments of this application, adjusting the compressor's operating frequency f based on the outdoor ambient temperature T4 includes dividing the outdoor ambient temperature T4 into multiple temperature ranges, each temperature range corresponding to a preset compressor frequency value; and adjusting the compressor frequency to the preset compressor frequency value corresponding to the temperature range in which the outdoor ambient temperature T4 falls. This facilitates the data processing device within the air conditioner in processing the current outdoor ambient temperature T4 value, classifying the current outdoor ambient temperature T4 value into the corresponding temperature range, and then changing the compressor's operating frequency f according to the preset compressor frequency value. Changing the compressor's operating frequency f is relatively convenient.

[0040] In some embodiments of the present application, as shown in FIG. 1, the air conditioner outdoor unit self-cleaning control method further comprises controlling the outdoor fan to stop running for a first preset time. The evaporator in the outdoor unit can be prevented from over-evaporating, and the compressor can be protected. In addition, the temperature inside the condenser can be raised during the frosting of the outdoor unit, which can affect the heat exchange effect of the entire air conditioner, avoid the air blown by the indoor unit being too hot, and avoid the user having a poor feeling in the room.

[0041] In the present embodiment, the first preset time can be 3 minutes, 4 minutes, 5 minutes, etc.

[0042] In some embodiments of the present application, as shown in FIG. 1, the air conditioner outdoor unit self-cleaning control method further comprises adjusting the first preset time according to the outdoor environment temperature T4. The first preset time can be adjusted appropriately according to the outdoor environment temperature T4, which can prevent the evaporator in the outdoor unit from over-evaporating, protect the compressor, and raise the temperature inside the condenser during the frosting of the outdoor unit, which can affect the heat exchange effect of the entire air conditioner, avoid the air blown by the indoor unit being too hot, and avoid the user having a poor feeling in the room.

[0043] In some embodiments of the present application, as shown in FIG. 1, the air conditioner outdoor unit self-cleaning control method further comprises adjusting the blowing angle of the indoor unit to a straight-blowing-prevention angle, which can avoid the indoor unit directly blowing on the user during the frosting operation of the outdoor unit, avoid causing the user to feel uncomfortable or dry skin, and make the user have a better use experience.

[0044] In some embodiments of the present application, as shown in FIG. 1, the air conditioner outdoor unit self-cleaning control method further comprises controlling the indoor fan to run at the highest wind resistance. At this time, the amount of air blown by the indoor unit is large, the heat exchange demand of the outdoor unit is large, the frosting effect of the outdoor unit is good, and the blowing angle of the indoor unit is adjusted to a straight-blowing-prevention angle, which can avoid the indoor unit directly blowing on the user during the frosting operation of the outdoor unit, avoid causing the user to feel uncomfortable or dry skin, and make the user have a better use experience.

[0045] In some embodiments of the present application, as shown in FIG. 1, the air conditioner outdoor unit self-cleaning control method further comprises turning off the electric auxiliary heating function in the indoor unit and the condenser frosting protection function of the outdoor unit. It can be understood that when the electric auxiliary heating function in the indoor unit is turned on, the heating can be achieved by electric energy, the frosting effect of the outdoor unit is poor, and the condenser frosting protection function of the outdoor unit can reduce the frosting effect of the outdoor unit. By turning off the electric auxiliary heating function in the indoor unit and the condenser frosting protection function of the outdoor unit, the frosting effect of the outdoor unit can be ensured, so that the outdoor unit can be defrosted after frosting, the dust on the outdoor unit can be removed with the water flow generated during defrosting, and the effect of water cleaning can be achieved.

[0046] In some embodiments of the present application, as shown in FIG. 1, the self-cleaning control method of the outdoor unit of the air conditioner further includes determining that the air conditioner runs in the heating mode for a second preset time, and controlling the compressor to stop running. When the air conditioner runs in the heating mode for the second preset time, the outdoor unit can achieve defrosting, and the compressor can stop running, which can reduce the energy consumption of the air conditioner during operation and achieve a good energy-saving effect.

[0047] In the present embodiment, the second preset time can be 3 minutes, 4 minutes, 5 minutes, etc.

[0048] In some embodiments of the present application, as shown in FIG. 1, the self-cleaning control method of the outdoor unit of the air conditioner further includes determining that the air conditioner runs in the heating mode for a second preset time, and controlling the compressor to stop running. When the air conditioner runs in the heating mode for the second preset time, the outdoor unit can achieve defrosting, and the compressor can stop running, which can reduce the energy consumption of the air conditioner during operation and achieve a good energy-saving effect.

[0049] It can be understood that when the outdoor environment temperature T4 is less than the defrosting temperature Te, the outdoor unit needs to perform defrosting. In the heating mode, the air conditioner makes the refrigerant circulate in the reverse process of the refrigeration process through the action of the electromagnetic four-way reversing valve. The refrigerant releases heat in the indoor heat exchanger and absorbs heat in the outdoor heat exchanger, thereby achieving the purpose of heating. When it is necessary to switch to the cooling mode, the air conditioner adjusts the state of the electromagnetic four-way reversing valve to make the refrigerant flow according to the normal refrigeration cycle. At this time, the compressor compresses the gaseous refrigerant into high-temperature and high-pressure gas, and then sends it to the condenser for cooling. After cooling, the refrigerant becomes liquid at medium temperature and high pressure. The liquid refrigerant is throttled and pressure-reduced by the expansion valve to become a low-temperature and low-pressure gas-liquid mixture, which is vaporized in the evaporator by absorbing heat from the air, thereby achieving the effect of cooling. The outdoor unit blows out hot air, which can melt the frost on the outdoor unit, and the dust on the outdoor unit can be washed away with the water generated during defrosting, thereby achieving the effect of water cleaning.

[0050] In the present embodiment, the defrosting temperature Te can be 0-20℃. For example, the defrosting temperature Te can be 0℃, 1℃, 2℃, 3℃, 4℃, 5℃, 6℃, 7℃, 8℃, 9℃, 10℃, 11℃, 12℃, 13℃, 14℃, 15℃, 16℃, 17℃, 18℃, 19℃ or 20℃.

[0051] In some embodiments of the present application, as shown in FIG. 1, the self-cleaning control method of the outdoor unit of the air conditioner further includes determining that the air conditioner runs in the heating mode for a second preset time, and controlling the compressor to stop running. When the air conditioner runs in the heating mode for the second preset time, the outdoor unit can achieve defrosting, and the compressor can stop running, which can reduce the energy consumption of the air conditioner during operation and achieve a good energy-saving effect.

[0052] In the embodiment, the third preset time can be 3 minutes, 4 minutes, 5 minutes, etc.

[0053] Further, as shown in FIG. 1, the air conditioner outdoor unit self-cleaning control method further comprises controlling the outdoor fan to reverse rotation for a fourth preset time. The outdoor fan reverse rotation can more effectively blow away the pollutants attached to the condenser of the outdoor unit, and in combination with the water washing cleaning effect of defrosting the outdoor unit after frosting, the double self-cleaning effect of the outdoor unit is achieved, and the self-cleaning of the outdoor unit in most cases is realized.

[0054] In the embodiment, the fourth preset time can be 3 minutes, 4 minutes, 5 minutes, etc.

[0055] In some embodiments of the present application, as shown in FIG. 1, the air conditioner outdoor unit self-cleaning control method further comprises judging whether the outdoor environment temperature T4 is greater than or equal to the defrosting temperature Te; if the outdoor environment temperature T4 is greater than or equal to the defrosting temperature Te, controlling the outdoor fan to reverse rotation for a fourth preset time. At this time, the outdoor environment temperature T4 is high, and the frosting on the outdoor unit can be naturally defrosted, and only the outdoor fan needs to be reversed. The outdoor fan reverse rotation can more effectively blow away the pollutants attached to the condenser of the outdoor unit, and in combination with the water washing cleaning effect of defrosting the outdoor unit after frosting, the double self-cleaning effect of the outdoor unit is achieved, and the self-cleaning of the outdoor unit in most cases is realized. And the air conditioner does not need to run in the refrigeration mode, which can reduce the energy consumption of the air conditioner when running, and has a good energy saving effect.

[0056] In some embodiments of the present application, as shown in FIG. 1, the air conditioner outdoor unit self-cleaning control method further comprises judging whether the indoor environment temperature T1 is greater than or equal to the maximum indoor temperature T max1 or less than or equal to the minimum indoor temperature T min1 , and whether the outdoor environment temperature T4 is greater than or equal to the maximum outdoor temperature T max2 or less than or equal to the minimum outdoor temperature T min2 ; if the indoor environment temperature T1 is greater than or equal to the maximum indoor temperature T max1 , and / or the indoor environment temperature T1 is less than or equal to the minimum indoor temperature T min1 , and / or the outdoor environment temperature T4 is greater than or equal to the maximum outdoor temperature T max2 , and / or the outdoor environment temperature T4 is less than or equal to the minimum outdoor temperature T min2 .

[0057] It can be understood that the indoor environment temperature T1 is higher than the maximum indoor temperature T max1When the indoor temperature is high, if the air conditioner runs in the heating mode, it may cause a large waste of energy, and if the air conditioner runs in the heating mode for a long time when the indoor temperature is already high, it may cause damage to the parts of the air conditioner, reducing the service life of the air conditioner. When the indoor environment temperature T1 is lower than the minimum indoor temperature T min1 When the indoor temperature is high, if the air conditioner runs in the heating mode, it may cause a large waste of energy, and if the air conditioner runs in the heating mode for a long time when the indoor temperature is already high, it may cause damage to the parts of the air conditioner, reducing the service life of the air conditioner. When the indoor environment temperature T1 is lower than the minimum indoor temperature T

[0058] It can be understood that when the outdoor environment temperature T4 is higher than the maximum outdoor temperature T max2 When the outdoor temperature is high, if the air conditioner runs in the heating mode, the compressor needs to bear greater load to generate heat, and in a high-temperature environment, the compressor may overheat due to excessive work, thereby affecting its performance and service life; and when the outdoor temperature is too high, the efficiency of the refrigerant in the air conditioner may decrease in the process of absorbing and releasing heat. This will result in a decrease in heating effect, and it may even be impossible to reach the set temperature. When the outdoor environment temperature T4 is lower than the minimum outdoor temperature T min2 When the outdoor temperature is high, if the air conditioner runs in the heating mode, the compressor needs to bear greater load to generate heat, and in a high-temperature environment, the compressor may overheat due to excessive work, thereby affecting its performance and service life; and when the outdoor temperature is too high, the efficiency of the refrigerant in the air conditioner may decrease in the process of absorbing and releasing heat. This will result in a decrease in heating effect, and it may even be impossible to reach the set temperature. When the outdoor environment temperature T4 is lower than the minimum outdoor temperature T

[0059] At this time, the air conditioner is not suitable to run in the heating mode, and the outdoor unit cannot realize frosting. The outdoor fan is controlled to rotate reversely for a fourth preset time. The outdoor fan rotating reversely can effectively blow away the pollutants attached to the condenser of the outdoor unit, realizing self-cleaning of the outdoor unit.

[0060] In some embodiments of the present application, as shown in FIG. 1, the air conditioner outdoor unit self-cleaning control method further comprises controlling the indoor fan to rotate while controlling the outdoor fan to rotate reversely. The indoor fan can supply air to the indoor environment, realizing the purpose of indoor air circulation and ventilation.

[0061] The air conditioner outdoor unit self-cleaning control method according to one specific embodiment of the present application is described below with reference to the accompanying drawings. It should be understood that the following description is exemplary and is intended to explain the present application, but cannot be understood as a limitation of the present application.

[0062] The air conditioner outdoor unit self-cleaning control method according to an embodiment of the present application, the air conditioner comprises an indoor unit and an outdoor unit.

[0063] Specifically, the indoor unit comprises an indoor unit heat exchanger, an indoor fan, etc.; the outdoor unit comprises a compressor, a condenser, an outdoor fan, an evaporator, etc.

[0064] As shown in FIG. 1, the air conditioner outdoor unit self-cleaning control method comprises:

[0065] Obtaining the indoor environment temperature T1 and the outdoor environment temperature T4;

[0066] Judging whether the indoor environment temperature T1 is lower than the maximum indoor temperature T max1 for heating operation and higher than the minimum indoor temperature T min1 for heating operation, and judging whether the outdoor environment temperature T4 is lower than the maximum outdoor temperature T max2 for heating operation and higher than the minimum outdoor temperature T min2 for heating operation; if the indoor environment temperature T1 is lower than the maximum indoor temperature T max1 for heating operation and higher than the minimum indoor temperature T min1 for heating operation, and the outdoor environment temperature T4 is lower than the maximum outdoor temperature T max2 for heating operation and higher than the minimum outdoor temperature T min2 for heating operation, controlling the compressor to operate, and the air conditioner to operate in the heating mode.

[0067] When the compressor operates and the air conditioner operates in the heating mode, the operating frequency f of the compressor is adjusted according to the outdoor environment temperature T4. The operating frequency f of the compressor can be adjusted to a value facilitating frosting according to the outdoor environment temperature T4, so as to facilitate defrosting of the outdoor unit after frosting, and the dust on the outdoor unit can be washed away with the water generated during defrosting, thereby achieving water washing and cleaning. The operating frequency f of the compressor and the outdoor environment temperature T4 are negatively correlated.

[0068] Specifically, adjusting the operating frequency f of the compressor according to the outdoor environment temperature T4 comprises:

[0069] Dividing the outdoor environment temperature T4 into a plurality of temperature intervals, each temperature interval corresponding to a preset compressor frequency value; adjusting the compressor frequency to the preset compressor frequency value corresponding to the temperature interval according to the temperature interval in which the outdoor environment temperature T4 is located. The data processing device in the air conditioner is facilitated to process the value of the current outdoor environment temperature T4, classify the value of the current outdoor environment temperature T4 to the corresponding temperature interval, and change the operating frequency f of the compressor according to the preset compressor frequency value, so that the operating frequency f of the compressor is changed more conveniently.

[0070] Then, the outdoor fan is controlled to stop running for a first preset time. The evaporator in the outdoor unit can be prevented from over-evaporating, and the compressor can be protected. In addition, the temperature inside the condenser can be increased during the frosting of the outdoor unit, which affects the heat exchange effect of the entire air conditioner, avoids the air blown by the indoor unit being too hot, and avoids the user's feeling being poor in the indoor. The first preset time is adjusted according to the outdoor environment temperature T4, which can prevent the evaporator in the outdoor unit from over-evaporating, and can protect the compressor. In addition, the temperature inside the condenser can be increased during the frosting of the outdoor unit, which affects the heat exchange effect of the entire air conditioner, avoids the air blown by the indoor unit being too hot, and avoids the user's feeling being poor in the indoor.

[0071] When the air conditioner operates in the heating mode, the blowing angle of the indoor unit is adjusted to the anti-direct blowing angle, which can avoid the direct blowing of the indoor unit to the user during the frosting operation of the outdoor unit, avoid causing the user to be uncomfortable or dry skin, and make the user's use experience better. In addition, the indoor fan is controlled to operate at the highest wind block. The amount of air blown by the indoor unit is large, the heat exchange demand of the outdoor unit is large, and the frosting effect of the outdoor unit is good. At the same time, the electric auxiliary heating function in the indoor unit and the condenser frosting protection function of the outdoor unit are turned off. The frosting effect of the outdoor unit can be ensured, so that the outdoor unit can be defrosted after frosting, and the dust on the outdoor unit can be removed with the water generated during defrosting, which has a water washing cleaning effect.

[0072] Then, it is determined whether the air conditioner operates in the heating mode for a second preset time; and the compressor is controlled to stop running. At this time, it is judged whether the outdoor environment temperature T4 is less than the defrosting temperature Te; if the outdoor environment temperature T4 is less than the defrosting temperature Te, the compressor is controlled to operate, and the air conditioner operates in the cooling mode. The outdoor unit blows out hot air, which can melt the frost on the outdoor unit, and the dust on the outdoor unit can be removed with the water generated during defrosting, which has a water washing cleaning effect.

[0073] Then, it is determined whether the air conditioner operates in the cooling mode for a third preset time; and the compressor is controlled to stop running. The outdoor fan is controlled to rotate reversely for a fourth preset time. The pollutants attached to the condenser of the outdoor unit can be blown away more effectively, and the water washing cleaning effect of defrosting the outdoor unit after frosting can be combined to achieve the double self-cleaning effect of the outdoor unit, and the self-cleaning of the outdoor unit in most cases can be realized.

[0074] In addition, it determines whether the outdoor ambient temperature T4 is greater than or equal to the defrost temperature Te. If the outdoor ambient temperature T4 is greater than or equal to the defrost temperature Te, it controls the outdoor fan to rotate in reverse for a preset time. At this time, the outdoor ambient temperature T4 is relatively high, and the frost on the outdoor unit can melt naturally. Simply rotating the outdoor fan in reverse can more effectively blow away the contaminants attached to the condenser of the outdoor unit. Combined with the water washing effect of defrosting the outdoor unit after it has frosted, a double self-cleaning effect is achieved, realizing self-cleaning of the outdoor unit in most cases. Moreover, the air conditioner does not need to run in cooling mode, which can reduce the energy consumption of the air conditioner during operation and achieve a better energy-saving effect.

[0075] In addition, determine whether the indoor ambient temperature T1 is greater than or equal to the maximum indoor temperature T during heating operation. max1 or less than or equal to the minimum indoor temperature T for heating operation min1 At the same time, determine whether the outdoor ambient temperature T4 is greater than or equal to the maximum outdoor temperature T during heating operation. max2 or less than or equal to the minimum outdoor temperature T for heating operation min2 ;

[0076] If the indoor ambient temperature T1 is greater than or equal to the maximum indoor temperature T during heating operation max1 And / or the indoor ambient temperature T1 is less than or equal to the minimum indoor temperature T for heating operation. min1 And / or the outdoor ambient temperature T4 is greater than or equal to the maximum outdoor temperature T during heating operation. max2 And / or the outdoor ambient temperature T4 is less than or equal to the minimum outdoor temperature T for heating operation. min2 ;

[0077] Control the outdoor fan to rotate in the opposite direction for the fourth preset time.

[0078] It is understandable that the indoor ambient temperature T1 is higher than the maximum indoor temperature T during heating operation. max1 When the indoor temperature is high, running the air conditioner in heating mode may result in significant energy waste. Furthermore, prolonged operation in heating mode when the indoor temperature is already high may damage the air conditioner's components and shorten its lifespan. The indoor ambient temperature T1 is lower than the minimum indoor temperature T for heating operation. min1 When the air conditioner is running in heating mode, the heating mode may be unstable. For example, problems such as poor heating effect, large temperature fluctuations, or frequent shutdowns may occur. Furthermore, due to the increased load on the air conditioner and its unstable operation, the air conditioner may require more frequent maintenance and upkeep when running in heating mode.

[0079] It is understandable that the outdoor ambient temperature T4 is higher than the maximum outdoor temperature Tm for heating operation. ax2When the air conditioner runs in heating mode, the compressor needs to bear greater load to generate heat. In high-temperature environment, the compressor may overheat due to overwork, thereby affecting its performance and service life. Moreover, when the outdoor temperature is too high, the refrigerant in the air conditioner may have a decreased efficiency in the process of absorbing and releasing heat. This may result in a weakened heating effect, and even the set temperature may not be reached. The outdoor environment temperature T4 is lower than the minimum outdoor temperature T min2 When the air conditioner runs in heating mode, the air conditioner has difficulty in obtaining sufficient heat from the outdoor environment, resulting in poor heating effect. Moreover, in low-temperature environment, the lubricating oil inside the compressor may become viscous, affecting the normal operation of the compressor.

[0080] At this time, the air conditioner is not suitable for running in heating mode, and the outdoor unit cannot realize frosting. The outdoor fan is controlled to rotate reversely for a fourth preset time. The reversely rotating outdoor fan can effectively blow away the pollutants attached to the condenser of the outdoor unit, realizing self-cleaning of the outdoor unit.

[0081] When the outdoor fan rotates reversely for the fourth preset time, the indoor fan is controlled to rotate, so that the indoor fan can supply air to the indoor, realizing the purpose of indoor air circulation and ventilation.

[0082] Finally, the air conditioner is turned off, and the self-cleaning of the air conditioner outdoor unit is completed.

[0083] Other configurations and operations of the air conditioner outdoor unit self-cleaning control method according to the embodiments of the present application are known to those skilled in the art, and will not be described in detail here.

[0084] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0085] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A method for controlling self-cleaning of an air conditioner outdoor unit, wherein, The method comprises the following steps: acquiring an indoor environment temperature T1 and an outdoor environment temperature T4; determining whether the indoor ambient temperature T1 is lower than a maximum indoor temperature T max1 for heating operation and higher than a minimum indoor temperature T min1 for heating operation, and simultaneously determining whether the outdoor ambient temperature T4 is lower than a maximum outdoor temperature T max2 for heating operation and higher than a minimum outdoor temperature T min2 for heating operation; If the indoor ambient temperature T1 is lower than the maximum indoor temperature T during heating operation max1 And higher than the minimum indoor temperature T for heating operation. min1 The outdoor ambient temperature T4 is lower than the maximum outdoor temperature T during heating operation. max2 And higher than the minimum outdoor temperature T for heating operation. min2 ; controlling the compressor to operate, and the air conditioner to operate in a heating mode.

2. The air conditioner outdoor unit self-cleaning control method of claim 1, wherein, The self-cleaning control method of the air conditioner outdoor unit further comprises: adjusting the operating frequency f of the compressor according to the outdoor environment temperature T4. 3.The air conditioner outdoor unit self-cleaning control method of claim 2, wherein, The operating frequency f of the compressor is negatively correlated with the outdoor environment temperature T4. 4.The air conditioner outdoor unit self-cleaning control method of claim 2 or 3, wherein, The step of adjusting the operating frequency f of the compressor according to the outdoor environment temperature T4 comprises: dividing the outdoor environment temperature T4 into a plurality of temperature intervals, each of which corresponds to a preset compressor frequency value; adjusting the compressor frequency to the preset compressor frequency value corresponding to the temperature interval in which the outdoor environment temperature T4 is located. 5.The air conditioner outdoor unit self-cleaning control method of any one of claims 1-4, wherein, The self-cleaning control method of the air conditioner outdoor unit further comprises: controlling the outdoor fan to stop operating for a first preset time. 6.The air-conditioner outdoor unit self-cleaning control method of claim 5, wherein, The self-cleaning control method of the air conditioner outdoor unit further comprises: adjusting the first preset time according to the outdoor environment temperature T4. 7.The air conditioner outdoor unit self-cleaning control method of any one of claims 1-6, wherein, The self-cleaning control method of the air conditioner outdoor unit further comprises: adjusting the blowing angle of the indoor unit to a direct-blowing-preventing angle. 8.The air conditioner outdoor unit self-cleaning control method of any one of claims 1-7, wherein, The self-cleaning control method of the air conditioner outdoor unit further comprises: controlling the indoor fan to operate at the highest wind block. 9.The air conditioner outdoor unit self-cleaning control method of any one of claims 1-8, wherein, The self-cleaning control method of the air conditioner outdoor unit further comprises: turning off the electric auxiliary heating function in the indoor unit and the condenser frosting protection function of the outdoor unit. 10.The air conditioner outdoor unit self-cleaning control method of any one of claims 1-9, wherein, The self-cleaning control method of the air conditioner outdoor unit further comprises: determining that the air conditioner operates in the heating mode for a second preset time; controlling the compressor to stop operating. 11.The air-conditioner outdoor unit self-cleaning control method of claim 10, wherein, The self-cleaning control method of the air conditioner outdoor unit further comprises: determining whether the outdoor environment temperature T4 is less than a defrosting temperature Te; if the outdoor environment temperature T4 is less than the defrosting temperature Te, controlling the compressor to operate, and the air conditioner to operate in a cooling mode. 12.The air-conditioner outdoor unit self-cleaning control method of claim 11, wherein, The self-cleaning control method of the air conditioner outdoor unit further comprises: determining that the air conditioner operates in the cooling mode for a third preset time; controlling the compressor to stop operating. 13.The air conditioner outdoor unit self-cleaning control method of claim 12, wherein, The self-cleaning control method of the air conditioner outdoor unit further comprises: controlling the outdoor fan to rotate reversely for a fourth preset time. 14.The air conditioner outdoor unit self-cleaning control method of any one of claims 11-13, wherein, The self-cleaning control method of the air conditioner outdoor unit further comprises: determining whether the outdoor environment temperature T4 is greater than or equal to the defrosting temperature Te; if the outdoor environment temperature T4 is greater than or equal to the defrosting temperature Te, controlling the outdoor fan to rotate reversely for the fourth preset time. 15.The air conditioner outdoor unit self-cleaning control method of any one of claims 11-14, wherein, The self-cleaning control method of the air conditioner outdoor unit further comprises: determining whether the indoor environment temperature T1 is greater than or equal to the maximum indoor temperature T for the heating operation max1 or less than or equal to the minimum indoor temperature T for the heating operation min1 while determining whether the outdoor environment temperature T4 is greater than or equal to the maximum outdoor temperature T for the heating operation max2 or less than or equal to the minimum outdoor temperature T for the heating operation min2 ; If the indoor environment temperature T1 is greater than or equal to the maximum indoor temperature T max1 for heating operation, and / or the indoor environment temperature T1 is less than or equal to the minimum indoor temperature T min1 for heating operation, and / or the outdoor environment temperature T4 is greater than or equal to the maximum outdoor temperature T max2 for heating operation, and / or the outdoor environment temperature T4 is less than or equal to the minimum outdoor temperature T min2 for heating operation, the control unit 20 controls the heating operation of the air conditioner 1 to be stopped. controlling the outdoor fan to rotate reversely for the fourth preset time. 16.The air conditioner outdoor unit self-cleaning control method of any one of claims 13-15, wherein, While controlling the outdoor fan to rotate reversely, the self-cleaning control method of the air conditioner outdoor unit further comprises: controlling the indoor fan to rotate.

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