CN110736196A - Control method and device for self-cleaning of air conditioner, air conditioner - Google Patents

Abstract

The present application relates to the technical field of air-conditioning self-cleaning, and discloses a control method for air-conditioning self-cleaning, including: obtaining the humidity level of the environment around a heat exchanger; In the condensation stage, the condensation operation is performed according to the condensation time. During the self-cleaning process of the air conditioner, the condensation time of the air conditioner self-cleaning is determined according to the humidity level of the surrounding environment of the air conditioner heat exchanger, and the air conditioner is controlled to perform the condensation operation according to the condensation time during the condensation phase of the self-cleaning, so as to realize the anti-condensation operation. Intelligent adjustment of exposure time. While increasing the amount of condensation on the surface of the heat exchanger to improve the cleanliness of the heat exchanger, the self-cleaning cycle of the air conditioner is shortened as much as possible. The application also discloses a control device and an air conditioner for the self-cleaning of the air conditioner.

Description

Control method and device for self-cleaning of air conditioner, air conditioner

technical field

The present application relates to the technical field of air-conditioning self-cleaning, for example, to a control method and device for air-conditioning self-cleaning, and an air conditioner.

Background technique

At present, the air conditioner has become a necessary electrical appliance in life. After the air conditioner works for a long time, the heat exchanger of the air conditioner is easy to accumulate dust. The accumulation of dust on the heat exchanger of the air conditioner can easily reduce the heat exchange capacity of the heat exchanger, and even cause the growth of bacteria and dust pollution in the air blowing, which is harmful to the health of the user. In this case, the air-conditioning self-cleaning technology can be used to automatically clean the heat exchanger. The existing self-cleaning technology is mainly realized through the process of condensation-frost-defrosting.

In the process of implementing the embodiments of the present disclosure, it is found that there are at least the following problems in the related art: in the process of self-cleaning of the air conditioner, the duration of condensation is fixed, and the duration of condensation cannot be adjusted intelligently. If the condensation time is too short and the surface of the heat exchanger has too little condensation, the heat exchanger will not be cleaned completely due to the limited water flow during defrosting. It greatly affects the normal air conditioning of the air conditioner.

SUMMARY OF THE INVENTION

In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended to be an extensive review, nor to identify key/critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

The embodiments of the present disclosure provide a control method and device for self-cleaning of an air conditioner, and an air conditioner, so as to solve the technical problem that the duration of condensation cannot be intelligently adjusted during the self-cleaning process of the air conditioner.

In some embodiments, the control method for air conditioning self-cleaning includes:

Obtain the humidity level of the surrounding environment of the heat exchanger;

Determine the condensation duration of the air conditioner self-cleaning according to the humidity level;

Control the air conditioner to perform condensation operation according to the condensation time in the condensation stage of self-cleaning.

In some embodiments, a control device for air conditioner self-cleaning includes a processor and a memory storing program instructions, and the processor is configured to execute the above control method for air conditioner self-cleaning when executing the program instructions.

In some embodiments, the air conditioner includes the above-mentioned control device for air conditioner self-cleaning.

The control method and device for air conditioner self-cleaning, and the air conditioner provided by the embodiments of the present disclosure can achieve the following technical effects:

During the self-cleaning process of the air conditioner, the condensation time of the air conditioner self-cleaning is determined according to the humidity level of the surrounding environment of the air conditioner heat exchanger, and the air conditioner is controlled to perform the condensation operation according to the condensation time during the condensation phase of the self-cleaning, so as to realize the anti-condensation operation. Intelligent adjustment of exposure time. While increasing the amount of condensation on the surface of the heat exchanger to improve the cleanliness of the heat exchanger, the self-cleaning cycle of the air conditioner is shortened as much as possible.

The foregoing general description and the following description are exemplary and explanatory only and are not intended to limit the application.

Description of drawings

One or more embodiments are exemplified by the accompanying drawings, which are not intended to limit the embodiments, and elements with the same reference numerals in the drawings are shown as similar elements, The drawings do not constitute a limitation of scale, and in which:

1 is a schematic flowchart of a control method for air conditioner self-cleaning provided by an embodiment of the present disclosure;

2 is a schematic flowchart of a control method for air-conditioning self-cleaning provided by an embodiment of the present disclosure;

3 is a schematic flowchart of a control method for air conditioner self-cleaning provided by an embodiment of the present disclosure;

FIG. 4 is a schematic structural diagram of a control device for air conditioning self-cleaning provided by an embodiment of the present disclosure.

Detailed ways

In order to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings, which are for reference only and are not intended to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, numerous details are provided to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawings.

The self-cleaning process of the air conditioner includes the condensation stage, the frosting stage and the defrosting stage. In the condensation stage, the fan brings the moisture near the heat exchanger to be cleaned to the surface of the heat exchanger to condense the heat exchanger; in the frosting stage, the condensation on the surface of the heat exchanger will adhere to the heat exchanger during the frosting process. The ash deposits on the surface of the heat exchanger are picked up; in the defrosting stage, the frost mixed with ash deposits melts, and the ash deposits are carried away from the surface of the heat exchanger along with the melted frost water to complete the self-cleaning of the heat exchanger.

An embodiment of the present disclosure provides a control method for air conditioner self-cleaning, as shown in FIG. 1 , including the following steps:

S101: Obtain the humidity level of the surrounding environment of the heat exchanger.

Here, the surrounding environment of the heat exchanger refers to the environment within a radius of 2 m (meters) with the heat exchanger to be cleaned as the center of the sphere. Since the condensation phase of the air conditioner self-cleaning mainly brings the moisture near the heat exchanger to the surface of the heat exchanger for condensation, the humidity level within the radius of 2m with the heat exchanger as the center of the sphere is used as the condensation duration of the air conditioner condensation phase. Judgment basis, the determination of condensation duration is more accurate.

In some embodiments, the humidity level may be determined according to a first correlation between the number of times of self-cleaning of the air conditioner within the first preset time period and the humidity level.

The first preset time period is a first preset time period before the current time. Optionally, the first preset duration is in hours (h). Optionally, the value range of the first preset duration is [3h, 7h], for example, 3h, 4h, 5h, 6h, 7h. The first association relationship includes one or more correspondence between the number of self-cleaning times and the humidity level. For example, Table 1 shows an optional first association relationship when the first preset duration is 4h (N is the number of self-cleaning times):

Table 1: First Association Relationship

Self-cleaning times (unit: times) Humidity level 0≤N≤2 Ultra high humidity 2<N≤4 high humidity 4<N≤6 medium wet N>6 low humidity

In the first association relationship, the more the self-cleaning times of the air conditioner within the first preset time period, the lower the humidity level. Since the condensation stage consumes moisture in the surrounding environment of the heat exchanger for condensation, the more the air conditioner performs self-cleaning within the first preset time period, the lower the humidity of the surrounding environment of the heat exchanger and the lower the humidity level.

The humidity level is determined by the number of self-cleaning times of the air conditioner within the first preset period, and a method for indirectly obtaining the humidity level of the surrounding environment of the heat exchanger is provided, and the obtaining method is more convenient and simple.

In some embodiments, the humidity level may be determined according to a second correlation between the ambient humidity of the environment surrounding the heat exchanger and the humidity level.

The second association relationship includes one or more corresponding relationships between ambient humidity and humidity levels. For example, Table 2 shows an optional second association relationship (Rh is the ambient humidity):

Table 2: Second Association Relationship

environment humidity Humidity level Rh>80% Ultra high humidity 70%<Rh≤80% high humidity 40%<Rh≤70% medium wet Rh<40% low humidity

In practical applications, the ambient humidity can be obtained by a humidity sensor arranged in the surrounding environment of the heat exchanger. Since the ambient humidity is the real-time relative humidity obtained by the humidity sensor, it is more accurate to use the ambient humidity to determine the humidity level.

S102: Determine the condensation duration of the air conditioner self-cleaning according to the humidity level.

Here, the dew condensation duration is the duration of the dew condensation operation (ie the dew condensation stage) during the self-cleaning process of the air conditioner.

In some embodiments, according to the humidity level, the corresponding condensation duration is obtained from the condensation duration correlation.

The condensation duration association relationship includes the correspondence between one or more humidity levels and condensation duration. For example, Table 3 shows an optional condensation duration relationship:

Table 3: Correlation of condensation duration

Humidity level Condensation time (unit: minutes) Ultra high humidity 2 high humidity 4 medium wet 6 low humidity 10

Since the higher the humidity level, the easier it is to form condensation on the surface of the heat exchanger. Therefore, in the correlation relationship between the condensation duration, the condensation duration is negatively correlated with the humidity level. The higher the humidity level, the shorter the condensation time; the lower the humidity level, the longer the condensation time.

S103: Control the air conditioner to perform a condensation operation according to the condensation duration in the condensation stage of self-cleaning.

After determining the condensation duration of the air conditioner self-cleaning, control the air conditioner to perform condensation operation according to the determined condensation duration in the condensation stage of self-cleaning, so that condensation occurs on the surface of the heat exchanger.

Optionally, the dew condensation operation includes: adjusting the operating state of the expansion valve so that the temperature of the surface of the heat exchanger drops below the dew point temperature, and adjusting the operating state of the fan on the side of the heat exchanger so that the moisture in the air is on the surface of the heat exchanger. Condensation.

The heat exchanger in the embodiments of the present disclosure refers to the heat exchanger to be cleaned, which may be an indoor heat exchanger or an outdoor heat exchanger. When the heat exchanger is an indoor heat exchanger, the method for air-conditioning self-cleaning can clean the indoor heat exchanger; when the heat exchanger is an outdoor heat exchanger, the method for air-conditioning self-cleaning can clean the outdoor Heat Exchanger.

When the heat exchanger to be cleaned is an indoor heat exchanger, adjust the operation mode of the air conditioner to the cooling mode, reduce the opening of the expansion valve, and reduce the temperature of the surface of the indoor heat exchanger to below the dew point; The speed of the fan on the side of the heat exchanger (that is, the indoor fan) slowly brings the moisture in the air around the indoor heat exchanger to the surface of the indoor heat exchanger for condensation.

When the heat exchanger to be cleaned is an outdoor heat exchanger, adjust the operation mode of the air conditioner to the heating mode, reduce the opening of the expansion valve, and reduce the temperature of the surface of the outdoor heat exchanger to below the dew point; The speed of the fan on the side of the outdoor heat exchanger (that is, the outdoor fan) slowly brings the moisture in the air around the outdoor heat exchanger to the surface of the outdoor heat exchanger for condensation.

In the embodiment of the present disclosure, when the air conditioner is self-cleaning, the condensation duration of the air conditioner self-cleaning is determined according to the humidity level of the surrounding environment of the heat exchanger of the air conditioner, and the air conditioner is controlled to perform the condensation operation according to the condensation duration during the condensation phase of self-cleaning, and then Realize the control of the amount of condensation on the surface of the heat exchanger. The humidity level of the environment around the heat exchanger is different, and the condensation time is also different. The higher the humidity level, the shorter the condensation time; the lower the humidity level, the longer the condensation time. While increasing the amount of condensation on the surface of the heat exchanger to improve the cleanliness of the heat exchanger, the self-cleaning cycle of the air conditioner is shortened as much as possible, reducing the impact on the normal air conditioning of the air conditioner, making it more flexible and intelligent.

An embodiment of the present disclosure provides a control method for air conditioner self-cleaning, as shown in FIG. 2 , including the following steps:

S201: Obtain the humidity level of the environment around the heat exchanger.

S202: Adjust the operating parameters of the condensation stage of the air conditioner self-cleaning according to the humidity level.

Optionally, the operating parameters include one or more of the frequency of the compressor, the opening of the expansion valve, the rotational speed of the cleaning side blower and the rotational speed of the heat exchange side blower.

Here, the cleaning side fan is the fan on the side of the heat exchanger to be cleaned; the heat exchange side fan is the fan on the side of the heat exchanger not to be cleaned. For example, when the heat exchanger to be cleaned is an indoor heat exchanger, the cleaning side fan is an indoor fan, and the heat exchange side fan is an outdoor fan; when the heat exchanger to be cleaned is an outdoor heat exchanger, the cleaning side fan is an outdoor fan The fan, the heat exchange side fan is an indoor fan.

When the heat exchanger to be cleaned is an indoor heat exchanger, the operation mode of the air conditioner is adjusted to the cooling mode (the indoor heat exchanger is kept at a low temperature); when the heat exchanger to be cleaned is an outdoor heat exchanger, the operation of the air conditioner is set to The mode is adjusted to the heating mode (the outdoor heat exchanger is kept at a low temperature) to better complete the condensation-frosting-defrosting process of the air conditioner self-cleaning.

Optionally, the higher the humidity level, the less variety of operating parameters to adjust.

During the self-cleaning process of the air conditioner, adjusting the frequency of the compressor, the opening of the expansion valve, the speed of the cleaning side fan or the speed of the heat exchange side fan can change the heat exchange state of the air conditioner, reduce the temperature of the heat exchanger to be cleaned, and then The effect of condensation on the surface of the heat exchanger. However, the more operating parameters that are adjusted, the greater the impact on the normal air conditioning of the air conditioner and the greater the damage to the air conditioner. Under normal circumstances, the higher the humidity level of the environment around the heat exchanger, the easier it is to form the surface of the heat exchanger. Condensation. Therefore, when the humidity level of the surrounding environment of the heat exchanger is relatively high, the types of operating parameters to be adjusted can be adaptively reduced. Under the condition of a certain amount of condensation on the heat exchanger, the influence on the normal air conditioning of the air conditioner can be reduced, and the use of the air conditioner can be prolonged. life.

In some embodiments, when the humidity level is ultra-high humidity, any one of the compressor frequency, the opening degree of the expansion valve, the rotational speed of the cleaning side fan and the rotational speed of the heat exchange side fan is adjusted.

Optionally, when the humidity level is ultra-high humidity, the frequency of the compressor is increased, the temperature of the heat exchanger is lowered, and condensation is formed on the surface of the heat exchanger.

Optionally, when the humidity level is ultra-high humidity, the opening degree of the expansion valve is reduced, the temperature of the heat exchanger is lowered, and condensation is formed on the surface of the heat exchanger.

Optionally, when the humidity level is ultra-high humidity, the rotation speed of the cleaning side fan is increased to increase the air exchange volume to cause condensation on the surface of the heat exchanger.

Optionally, when the humidity level is ultra-high humidity, the rotational speed of the heat exchange side fan is increased, the heat exchange is increased, and the temperature of the heat exchanger is decreased, so that the surface of the heat exchanger is condensed.

In some embodiments, when the humidity level is high humidity, any two of the compressor frequency, the expansion valve opening, the rotational speed of the cleaning side fan and the rotational speed of the heat exchange side fan are adjusted.

Optionally, when the humidity level is high humidity, the frequency of the compressor is increased, the opening degree of the expansion valve is decreased, and the temperature of the heat exchanger is decreased, so that condensation on the surface of the heat exchanger is made.

Optionally, when the humidity level is high humidity, the frequency of the compressor is increased to reduce the temperature of the heat exchanger, and the rotational speed of the cleaning side fan is increased to increase the amount of air exchange and cause condensation on the surface of the heat exchanger.

Optionally, when the humidity level is high humidity, the frequency of the compressor is increased to reduce the temperature of the heat exchanger, and the rotational speed of the fan on the heat exchange side is increased to increase the heat exchange, thereby reducing the temperature of the heat exchanger and causing condensation on the surface of the heat exchanger.

Optionally, when the humidity level is high humidity, the opening degree of the expansion valve is reduced to reduce the temperature of the heat exchanger, and the rotational speed of the cleaning side fan is increased to increase the amount of air exchange, so that the surface of the heat exchanger is condensed.

Optionally, when the humidity level is high humidity, reduce the opening degree of the expansion valve to reduce the temperature of the heat exchanger, and increase the speed of the fan on the heat exchange side to increase the heat exchange, thereby reducing the temperature of the heat exchanger and causing condensation on the surface of the heat exchanger. dew.

Optionally, when the humidity level is high humidity, the rotation speed of the cleaning side fan is increased to increase the air exchange volume, and the rotation speed of the heat exchange side fan is increased to increase the heat exchange, thereby reducing the temperature of the heat exchanger and causing condensation on the surface of the heat exchanger.

In some embodiments, when the humidity level is medium humidity, any three of the compressor frequency, the expansion valve opening, the rotational speed of the cleaning side fan and the rotational speed of the heat exchange side fan are adjusted.

Optionally, when the humidity level is medium humidity, increase the frequency of the compressor, decrease the opening degree of the expansion valve to reduce the temperature of the heat exchanger, and increase the rotational speed of the cleaning side fan to increase the air exchange volume and cause condensation on the surface of the heat exchanger.

Optionally, when the humidity level is medium humidity, increase the frequency of the compressor, reduce the opening of the expansion valve to reduce the temperature of the heat exchanger, and increase the speed of the heat exchange side fan to increase the heat exchange, thereby reducing the temperature of the heat exchanger, so that the Condensation on the heat exchanger surface.

Optionally, when the humidity level is medium humidity, increase the compressor frequency, increase the heat exchange side fan speed to increase heat exchange, reduce the heat exchanger temperature, and increase the clean side fan speed to increase the air exchange volume, so that the heat exchanger Surface condensation.

Optionally, when the humidity level is medium humidity, reduce the opening of the expansion valve, increase the rotation speed of the heat exchange side fan to increase heat exchange, reduce the temperature of the heat exchanger, and increase the rotation speed of the clean side fan to increase the amount of air exchange, so that the Condensation on the heater surface.

In some embodiments, when the humidity level is low humidity, the compressor frequency, the expansion valve opening, the rotational speed of the cleaning side fan and the rotational speed of the heat exchange side fan are adjusted.

Optionally, when the humidity level is low humidity, increase the compressor frequency, decrease the expansion valve opening, increase the heat exchange side fan speed to increase heat exchange, decrease the heat exchanger temperature, and increase the clean side fan speed to increase air exchange amount to cause condensation on the surface of the heat exchanger.

S203: Control the operation of the air conditioner according to the adjusted operation parameters in the condensation stage of self-cleaning.

After determining the adjusted operating parameters of the air conditioner self-cleaning, control the air conditioner to control the operation of the air conditioner according to the adjusted operating parameters in the condensation stage of self-cleaning (ie, perform a dew condensation operation) to condense the surface of the heat exchanger.

In the embodiment of the present disclosure, during self-cleaning, the air conditioner adjusts the operation parameters of the air conditioner during the condensation phase of self-cleaning according to the humidity level of the surrounding environment of the air conditioner heat exchanger, and controls the air conditioner to follow the adjusted operation parameters during the condensation phase of self-cleaning. run. The humidity levels of the surrounding environment of the heat exchanger are different, and the adjusted operating parameters are also different. While increasing the amount of condensation on the surface of the heat exchanger to improve the cleanliness of the heat exchanger, it can reduce the impact on the normal air conditioning of the air conditioner, making it more flexible and efficient. intelligent.

An embodiment of the present disclosure provides a control method for air conditioner self-cleaning, as shown in FIG. 3 , including the following steps:

S301: Perform a condensation operation.

S302: After condensation on the surface of the heat exchanger, adjust the operation state of the expansion valve and the fan on the side of the heat exchanger to make frost on the surface of the heat exchanger.

After condensation on the surface of the heat exchanger, continue to reduce the opening of the expansion valve, reduce the temperature of the heat exchanger, and reduce the speed of the fan (cleaning side fan) on the heat exchanger side to avoid blowing the condensation away from the heat exchange the surface of the heat exchanger, which in turn causes frost on the surface of the heat exchanger.

In some embodiments, step S302 may be replaced by: adjusting the operating states of the compressor and the fan to form frost on the surface of the heat exchanger.

After condensation on the surface of the heat exchanger, continue to increase the frequency of the compressor, reduce the temperature of the heat exchanger, and reduce the speed of the fan (clean side fan) to avoid blowing the condensation off the surface of the heat exchanger, thereby making the heat exchanger Frost on the surface.

In some embodiments, step S302 may be replaced by: adjusting the operating states of the expansion valve, the compressor and the fan to form frost on the surface of the heat exchanger.

After condensation on the surface of the heat exchanger, continue to reduce the opening of the expansion valve, increase the frequency of the compressor, reduce the temperature of the heat exchanger, and reduce the speed of the fan (clean side fan) to avoid blowing condensation away from the heat exchange the surface of the heat exchanger, which in turn causes frost on the surface of the heat exchanger.

S303: After the surface of the heat exchanger is frosted, adjust the operation state of the expansion valve and the fan on the side of the heat exchanger to defrost the surface of the heat exchanger.

After the surface of the heat exchanger is frosted, increase the opening of the expansion valve, increase the temperature of the heat exchanger, and then defrost the surface of the heat exchanger, and increase the speed of the fan (cleaning side fan) on the heat exchanger side to melt the heat. The frost water is blown away from the surface of the heat exchanger to complete a self-cleaning of the heat exchanger.

In some embodiments, step S303 may be replaced by: adjusting the operating states of the compressor and the fan to defrost the surface of the heat exchanger.

After the surface of the heat exchanger is frosted, reduce the frequency of the compressor, increase the temperature of the heat exchanger, and then defrost the surface of the heat exchanger, and increase the speed of the fan (cleaning side fan) to blow the melted frost water away from the heat exchanger surface to complete a self-cleaning of the heat exchanger.

In some embodiments, step S303 may be replaced by: adjusting the operating states of the expansion valve, the compressor and the fan to defrost the surface of the heat exchanger.

After the surface of the heat exchanger is frosted, reduce the frequency of the compressor, increase the opening of the expansion valve, and speed up the temperature of the heat exchanger, thereby defrosting the surface of the heat exchanger, and increasing the speed of the fan (cleaning side fan), so that the The melted frost water is blown off the surface of the heat exchanger to complete the self-cleaning of the heat exchanger.

S304: Obtain the dust thickness on the surface of the heat exchanger within a second preset period of time after the surface of the heat exchanger is defrosted.

The second preset time period is a second preset time period after the time when the surface of the heat exchanger is defrosted. Optionally, the second preset duration is in minutes (min). Optionally, the value range of the second preset duration is [1min, 7min] (min: minutes), for example, 1min, 3min, 5min, 7min. After the surface of the heat exchanger is defrosted, the heat exchanger completes a self-cleaning. In order to detect the cleaning degree of the self-cleaning of the heat exchanger, the dust thickness on the surface of the heat exchanger is obtained for verification.

In some embodiments, the dust thickness is determined from the difference between the measured distance from the measurement launch point to the fin surface of the heat exchanger and the first preset distance.

An infrared distance measuring device (eg, an infrared distance measuring sensor) is used to measure the distance from the emission point to the fin surface of the heat exchanger, and the measurement emission point can be the installation position of the infrared distance measuring device. The first preset distance is the distance from the measured emission point to the surface of the fins of the heat exchanger when there is no dust on the surface of the heat exchanger. The greater the difference between the distance from the measured emission point to the fin surface of the heat exchanger and the first preset distance, the thicker the dust is.

In some embodiments, the dust thickness is determined from the difference between the measured distance between the two fins of the heat exchanger and the second predetermined distance.

The distance between the two fins of the heat exchanger is measured using an infrared distance measuring device. The second preset distance is the distance between the two fins when no dust is deposited on the surface of the heat exchanger. The larger the difference between the distance between the two fins of the heat exchanger and the second preset distance is, the thicker the dust is.

S305: Determine whether the dust thickness satisfies a preset condition.

Optionally, the preset condition is that the dust thickness is greater than or equal to the preset dust thickness. The preset dust thickness is the dust thickness that has little effect on the normal heating/cooling performance of the air conditioner. Optionally, the value of the preset dust thickness is [0, 2mm] (mm:mm), for example, 0, 0.5mm, 1mm, 2mm. The dust thickness meets the preset conditions, indicating that the presence of dust on the surface of the heat exchanger will greatly affect the normal heating performance of the air conditioner.

S306: When the dust thickness satisfies the preset condition, perform the self-cleaning operation of the heat exchanger again.

When the dust thickness satisfies the preset condition, that is, when the obtained dust thickness is greater than or equal to the preset dust thickness, it indicates that there is still dust on the surface of the heat exchanger, which will greatly affect the normal heating/cooling performance of the air conditioner, and the heat exchange is performed again. The self-cleaning operation of the air conditioner is carried out continuously until it is determined that the self-cleaning of the air conditioner has reached the standard.

S307: When the dust thickness does not meet the preset condition, perform the self-cleaning operation of other heat exchangers of the air conditioner.

When the dust thickness does not meet the preset conditions, that is, when the obtained dust thickness is less than the preset dust thickness, it indicates that the dust on the surface of the heat exchanger will not have a great impact on the normal heating/cooling performance of the air conditioner, and other Self-cleaning operation of heat exchangers. For example, the self-cleaning operation of the indoor heat exchanger is currently performed. When the dust thickness does not meet the preset conditions, the self-cleaning operation of the outdoor heat exchanger is performed; the self-cleaning operation of the outdoor heat exchanger is currently performed. When the conditions are set, the self-cleaning operation of the indoor heat exchanger is carried out.

The method for self-cleaning of air conditioners implemented in the present disclosure can be used to clean indoor heat exchangers and outdoor heat exchangers; the method for self-cleaning of air conditioners can also be used to clean indoor heat exchangers first, and then reuse them after cleaning. The method for air-conditioning self-cleaning cleans the outdoor heat exchanger; the method for air-conditioning self-cleaning can also be used to clean the outdoor heat exchanger, and after the cleaning is completed, the indoor heat exchanger can be cleaned by the method for air-conditioning self-cleaning Heater.

In the embodiment of the present disclosure, whether the self-cleaning of the heat exchanger meets the standard is determined according to the thickness of the dust on the surface of the heat exchanger. In the case that the self-cleaning of the heat exchanger fails to meet the standard, the continuous self-cleaning of the heat exchanger is carried out; when the self-cleaning of the heat exchanger meets the standard, the self-cleaning of other heat exchangers of the air conditioner is continuously carried out, and the self-cleaning effect of the air conditioner is improved. good.

In some embodiments, within a third preset period of time after the surface of the heat exchanger is defrosted, the four-way valve is controlled to change direction to perform the self-cleaning operation of other heat exchangers of the air conditioner.

The third preset time period is the third preset time period after the time when the surface of the heat exchanger is defrosted, and the value range of the third preset time period is [5min, 8min], for example, 5min, 6min, 7min, 8min . After the defrosting of the surface of the heat exchanger is completed, the heat exchanger completes a self-cleaning operation, and the four-way valve is controlled to change the direction to perform the self-cleaning operation of other heat exchangers of the air conditioner.

When performing the self-cleaning operation of different heat exchangers of the air conditioner (such as indoor heat exchanger and outdoor heat exchanger), the heating mode of the air conditioner is usually adjusted so as to better complete the condensation-frosting- The process of defrosting. For example, when the heat exchanger to be cleaned is an indoor heat exchanger, the operation mode of the air conditioner is adjusted to the cooling mode; when the heat exchanger to be cleaned is an outdoor heat exchanger, the operation mode of the air conditioner is adjusted to the heating mode . When the air conditioner switches between cooling mode and heating mode, first reduce the operating frequency of the compressor, then control the four-way valve to quickly reverse the direction, and finally increase the operating frequency of the compressor. It can better perform the self-cleaning operation of different heat exchangers of the air conditioner.

An embodiment of the present disclosure provides a control device for air conditioning self-cleaning, the structure of which is shown in FIG. 4 , and includes:

A processor (processor) 40 and a memory (memory) 41 may also include a communication interface (Communication Interface) 42 and a bus 43 . The processor 40 , the communication interface 42 , and the memory 41 can communicate with each other through the bus 43 . The communication interface 42 may be used for information transfer. The processor 40 may invoke the logic instructions in the memory 41 to execute the control method for air conditioner self-cleaning in the above-mentioned embodiments.

In addition, the above-mentioned logic instructions in the memory 41 can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.

As a computer-readable storage medium, the memory 41 can be used to store software programs and computer-executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 40 executes the function application and data processing by running the program instructions/modules stored in the memory 41 , that is, to implement the control method for air conditioner self-cleaning in the above method embodiments.

The memory 41 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. In addition, the memory 41 may include high-speed random access memory, and may also include non-volatile memory.

An embodiment of the present disclosure provides an air conditioner, including basic components of the air conditioner, such as a compressor, an expansion valve, an indoor heat exchanger, an outdoor heat exchanger, an indoor fan, and an outdoor fan, and also includes the above-mentioned control device for air conditioner self-cleaning .

An embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, where the computer-executable instructions are configured to execute the above-mentioned control method for air conditioner self-cleaning.

An embodiment of the present disclosure provides a computer program product, where the computer program product includes a computer program stored on a computer-readable storage medium, and the computer program includes program instructions that, when executed by a computer, cause all The computer executes the above control method for air conditioner self-cleaning.

The above-mentioned computer-readable storage medium may be a transient computer-readable storage medium, and may also be a non-transitory computer-readable storage medium.

The technical solutions of the embodiments of the present disclosure may be embodied in the form of software products, and the computer software products are stored in a storage medium and include one or more instructions to enable a computer device (which may be a personal computer, a server, or a network equipment, etc.) to execute all or part of the steps of the methods described in the embodiments of the present disclosure. The aforementioned storage medium may be a non-transitory storage medium, including: U disk, removable hard disk, Read-Only Memory (ROM, Read-Only Memory), Random Access Memory (RAM, Random Access Memory), magnetic disk or optical disk, etc. A medium that can store program codes, and can also be a transient storage medium.

The foregoing description and drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, process, and other changes. The examples are only representative of possible variations. Unless expressly required, individual components and functions are optional and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. The scope of the disclosed embodiments includes the full scope of the claims, along with all available equivalents of the claims. As used in this application, "plurality" means two or more (inclusive), and further, although the terms "first", "second", etc. may be used in this application to describe various elements, However, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, without changing the meaning of the description, a first element could be termed a second element, and similarly, a second element could be termed a first element, so long as all occurrences of "the first element" were consistently renamed and all occurrences of "the first element" were named consistently The "second element" can be renamed consistently. The first element and the second element are both elements, but may not be the same element. Also, the terms used in this application are used to describe the embodiments only and not to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a" (a), "an" (an) and "the" (the) are intended to include the plural forms as well, unless the context clearly dictates otherwise. . Similarly, the term "and/or" as used in this application is meant to include any and all possible combinations of one or more of the associated listings. Additionally, when used in this application, the term "comprise" and its variations "comprises" and/or including and/or the like refer to stated features, integers, steps, operations, elements, and/or The presence of a component does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groupings of these. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in the process, method, or device that includes the element. Herein, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, reference may be made to the description of the method section for relevant parts.

Those skilled in the art can realize that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. Skilled artisans may use different methods for implementing the described functionality for each particular application, but such implementations should not be considered beyond the scope of the disclosed embodiments. The skilled person can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units can refer to the corresponding processes in the foregoing method embodiments, and details are not repeated here.

In the embodiments disclosed herein, the disclosed methods and products (including but not limited to apparatuses, devices, etc.) may be implemented in other ways. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units may only be a logical function division. In actual implementation, there may be other division methods, for example, multiple units or components may be combined Either it can be integrated into another system, or some features can be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. This embodiment may be implemented by selecting some or all of the units according to actual needs. In addition, each functional unit in the embodiment of the present disclosure may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

The flowchart and block diagrams in the Figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code that contains one or more functions for implementing the specified logical function(s) executable instructions. In some alternative implementations, the functions noted in the blocks may occur out of the order noted in the figures. For example, two blocks in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, operations or steps corresponding to different blocks may also occur in different sequences than those disclosed in the description, and sometimes there is no specific relationship between different operations or steps. order. For example, two consecutive operations or steps may, in fact, be performed substantially concurrently, or they may sometimes be performed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented in special purpose hardware-based systems that perform the specified functions or actions, or special purpose hardware implemented in combination with computer instructions.

Claims (10)

1. a control method for air-conditioning self-cleaning, is characterized in that, comprises: Obtain the humidity level of the environment around the heat exchanger; Determine the condensation duration of the air conditioner self-cleaning according to the humidity level; The air conditioner is controlled to perform the condensation operation according to the condensation duration in the condensation stage of self-cleaning. 2. The control method according to claim 1, wherein the obtaining the humidity level of the surrounding environment of the heat exchanger comprises: The humidity level is determined according to the first correlation between the self-cleaning times of the air conditioner within the first preset time period and the humidity level; or, The humidity level is determined according to a second correlation relationship between the ambient humidity of the environment surrounding the heat exchanger and the humidity level. 3. The control method according to claim 1, wherein the condensation operation comprises: The operating state of the expansion valve is adjusted so that the temperature of the surface of the heat exchanger falls below the dew point temperature, and the operating state of the fan on the side of the heat exchanger is adjusted to condense the moisture in the air on the surface of the heat exchanger. 4. The control method according to claim 1, 2 or 3, characterized in that, after the dew condensation operation is performed, further comprising: Adjust the operating state of the expansion valve and the fan on the side of the heat exchanger to make the surface of the heat exchanger frost; or, Adjust the operating state of the compressor and the fan to form frost on the surface of the heat exchanger; or, The operating states of the expansion valve, the compressor and the fan are adjusted to form frost on the surface of the heat exchanger. 5. The control method according to claim 4, wherein after the surface of the heat exchanger is frosted, the method further comprises: Adjust the operating state of the expansion valve and the blower on the side of the heat exchanger to defrost the surface of the heat exchanger; or, Adjust the operating state of the compressor and the fan to defrost the surface of the heat exchanger; or, The operating states of the expansion valve, the compressor and the fan are adjusted to defrost the surface of the heat exchanger. 6. The control method according to claim 5, further comprising: obtaining the dust thickness on the surface of the heat exchanger within a second preset period of time after the surface of the heat exchanger is defrosted; When the dust thickness satisfies the preset condition, the self-cleaning operation of the heat exchanger is performed again. 7. The control method according to claim 6, wherein the dust thickness satisfies a preset condition, comprising: The dust thickness is greater than or equal to a preset dust thickness. 8. The control method according to claim 6, further comprising: When the dust thickness does not meet the preset condition, the self-cleaning operation of other heat exchangers of the air conditioner is performed. 9. A control device for air conditioner self-cleaning, comprising a processor and a memory storing program instructions, wherein the processor is configured to, when executing the program instructions, execute the The control method for air conditioner self-cleaning according to any one of claims 1 to 8. 10. An air conditioner, characterized by comprising the control device for air conditioner self-cleaning as claimed in claim 9.

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