WO2023082639A1

WO2023082639A1 - Method and apparatus for cleaning filter screen, and air conditioner

Info

Publication number: WO2023082639A1
Application number: PCT/CN2022/099330
Authority: WO
Inventors: 宋龙; 吕福俊
Original assignee: 青岛海尔空调器有限总公司; 青岛海尔空调电子有限公司; 海尔智家股份有限公司
Priority date: 2021-11-09
Filing date: 2022-06-17
Publication date: 2023-05-19
Also published as: CN114251739B; CN114251739A

Abstract

Disclosed is a method for cleaning a filter screen (1). The method comprises: measuring the light transmittance of a filter screen (1); and if the light transmittance is less than or equal to a set threshold value, starting a cleaning apparatus, and controlling the filter screen (1) to cyclically rotate. The cleanliness of a filter screen (1) is determined by measuring the light transmittance of the filter screen (1), and if it is determined that the filter screen (1) needs to be cleaned, a cleaning apparatus is started, and the filter screen (1) is controlled to cyclically rotate for all-round cleaning of the filter screen (1), such that after an air conditioner runs self-cleaning of the filter screen (1), the cleanliness of the filter screen (1) can be improved to the maximum extent. Further disclosed are an apparatus for cleaning a filter screen (1), and an air conditioner.

Description

Method and device for cleaning filter, air conditioner

This application is based on a Chinese patent application with application number 202111320869.0 and a filing date of November 9, 2021, and claims the priority of this Chinese patent application. The entire content of this Chinese patent application is hereby incorporated by reference into this application.

technical field

The present application relates to the technical field of smart home appliances, for example, to a method and device for cleaning a filter, and an air conditioner.

Background technique

At present, air conditioners are all equipped with filter screens. And as the use time increases, the filter screen will accumulate a large amount of dust, making the air circulation in the indoor unit of the air conditioner worse. As the air volume at the air outlet of the air conditioner decreases, the corresponding cooling effect will also decrease, and even cause the air blown by the air conditioner into the room to contain dust.

In the prior art, in order to solve the above problems, it is usually used to set the time length to judge whether there is dust clogging the filter screen, and the cleaning method for the clogged filter screen is generally to prompt the user to clean it manually or use a vacuum cleaner pre-installed in the indoor unit, etc. equipment for automatic cleaning.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in related technologies:

The air conditioner uses a built-in vacuum cleaner and other cleaning equipment to self-clean the filter screen. After cleaning, the cleanliness of the filter screen is poor, requiring multiple cleanings by the equipment or secondary cleaning by the user.

Contents of the invention

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

Embodiments of the present disclosure provide a method and device for cleaning a filter, and an air conditioner, so as to improve the cleanliness of the filter after the self-cleaning of the filter in operation of the air conditioner.

In some embodiments, the method includes: the above method is applied to an air conditioner, the air conditioner includes a cyclically rotating filter screen and a cleaning device, and the cleaning device is used for cleaning the filter screen; the above method includes: detecting the light transmission of the filter screen rate; when the light transmittance is less than or equal to the set threshold, the cleaning device is turned on and the filter screen is controlled to cycle.

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

In some embodiments, the air conditioner includes: a filter screen that can circulate and rotate; a cleaning device that includes a water pump, a liquid storage device, and a spraying device. The liquid storage device has a self-heating function and is used for storing the cleaning solution and cleaning The solution is preheated; the spray device has a self-heating function, which is used to heat the cleaning solution and clean the filter screen; the water pump can suck the cleaning solution into the liquid storage device from the liquid collection port or pump the cleaning solution from the liquid storage device to the cleaning device for cleaning. cleaning said filter screen; and, the above-mentioned device for filter screen cleaning.

The method and device for cleaning the filter screen and the air conditioner provided in the embodiments of the present disclosure can achieve the following technical effects:

The cleanliness of the filter is determined by detecting the light transmittance of the filter. When it is judged that the filter needs to be cleaned, the cleaning device is turned on and the filter is cleaned in all directions by controlling the circular rotation of the filter. Through the above method, the cleanliness of the filter screen after the self-cleaning of the air conditioner running filter screen can be improved to the greatest extent.

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 corresponding drawings, and these exemplifications and drawings do not constitute a limitation to the embodiments, and elements with the same reference numerals in the drawings are shown as similar elements, The drawings are not limited to scale and in which:

Fig. 1 is a schematic cross-sectional structure diagram of an air conditioner provided by an embodiment of the present disclosure;

Fig. 2 is a schematic cross-sectional structure diagram of another air conditioner provided by an embodiment of the present disclosure;

3 is a schematic cross-sectional view of an air conditioner provided by an embodiment of the present disclosure;

Fig. 4 is a partially enlarged schematic diagram of a spraying device provided by an embodiment of the present disclosure;

Fig. 5 is a schematic diagram of a method for cleaning a filter provided by an embodiment of the present disclosure;

Fig. 6 is a schematic diagram of another method for cleaning a filter screen provided by an embodiment of the present disclosure;

Fig. 7 is a schematic diagram of another method for cleaning a filter screen provided by an embodiment of the present disclosure;

Fig. 8 is a schematic diagram of another method for cleaning a filter provided by an embodiment of the present disclosure;

Fig. 9 is a schematic diagram of another method for cleaning a filter provided by an embodiment of the present disclosure;

Fig. 10 is a schematic diagram of another method for cleaning a filter screen provided by an embodiment of the present disclosure;

Fig. 11 is a schematic diagram of another method for cleaning a filter screen provided by an embodiment of the present disclosure;

Fig. 12 is a schematic diagram of another method for cleaning a filter provided by an embodiment of the present disclosure;

Fig. 13 is a schematic diagram of another method for cleaning a filter provided by an embodiment of the present disclosure;

Fig. 14 is a schematic diagram of another method for cleaning a filter provided by an embodiment of the present disclosure;

Fig. 15 is a schematic diagram of another method for cleaning a filter provided by an embodiment of the present disclosure;

Fig. 16 is a schematic diagram of another device for cleaning a filter provided by an embodiment of the present disclosure.

Reference signs:

1: Filter screen; 2: Heat exchanger; 3: Fan; 4: First liquid outlet; 5: Second liquid outlet; 6: Rack; 7: Gear; 8: Water pump; 9: Liquid storage device; 10: spraying device; 11: filter; 12: water storage one-way valve; 13: cleaning one-way valve; 14: cleaning nozzle; 15: liquid collection port; 151: indoor liquid collection port; 152: outdoor liquid collection port; 16: light transmittance detection equipment; 161: light irradiator; 162: light sensor.

Detailed ways

In order to understand the characteristics and technical content 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 in conjunction with the accompanying drawings. The attached drawings are only for reference and description, and are not intended to limit the embodiments of the present disclosure. In the following technical description, for purposes of explanation, numerous details are set forth in order 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 terms "first", "second" and the like in the description and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It should be understood that the data so used may be interchanged under appropriate circumstances so as to facilitate the embodiments of the disclosed embodiments described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion.

Unless stated otherwise, the term "plurality" means two or more.

In the embodiments of the present disclosure, the character "/" indicates that the preceding and following objects are an "or" relationship. For example, A/B means: A or B.

The term "and/or" is an associative relationship describing objects, indicating that there can be three relationships. For example, A and/or B means: A or B, or, A and B, these three relationships.

The term "correspondence" may refer to an association relationship or a binding relationship, and the correspondence between A and B means that there is an association relationship or a binding relationship between A and B.

As shown in FIG. 1 , FIG. 2 and FIG. 3 , an embodiment of the present disclosure provides an air conditioner, including a filter screen 1 , a cleaning device, a heat exchanger 2 and a fan 3 . The air conditioner realizes the interaction with the air outside the air conditioner through the fan 3 , and realizes the heat exchange between the indoor air and the outdoor air through the heat exchanger 2 . Wherein, the fan 3 may be a cross flow fan, an axial flow fan or other fans, which are not specifically limited here. The air conditioner is also provided with a liquid injection port for adding cleaning solution into the liquid storage device 9 when the capacity of the cleaning solution in the liquid storage device 9 is insufficient. The air conditioner is also provided with a first liquid discharge port 4 and a second liquid discharge port 5 , wherein the cleaning solution after cleaning the filter screen 1 is discharged through the first liquid discharge port 4 . When the cleaning solution is water and the condensed water stored in the liquid storage device 9 reaches the storage upper limit, the excess condensed water collected through the liquid collection port 15 is discharged through the second liquid discharge port 5 . The liquid collection port 15 includes an indoor liquid collection port 151 and an outdoor liquid collection port 152. The indoor liquid collection port 151 is used to collect the condensed water generated in the indoor unit, and the outdoor liquid collected port 152 is used to collect the condensed water generated in the outdoor unit.

The upper and lower ends of the filter screen 1 are provided with a rack 6 and a gear 7 meshed with the rack 6, and the rotation of the gear 7 is controlled to make the filter screen 1 rotate along the central axis of the air conditioner. When the filter screen 1 needs to be cleaned, the filter screen 1 is kept away from the air inlet by controlling the rotation of the gear 7, and at the same time, the cleaning device is opened to clean the filter screen 1. When the filter screen 1 rotates to the maximum angle, by controlling the rotation of the gear 7 again and controlling the cleaning device to continue cleaning the filter screen 1 until the filter screen 1 is reset, the single cycle rotation of the filter screen 1 is completed.

The cleaning device includes a water pump 8 , a liquid storage device 9 and a spraying device 10 . The liquid storage device 9 has a self-heating function and is used for storing the cleaning solution and preheating the cleaning solution. The spraying device 10 has a self-heating function for heating the cleaning solution and cleaning the filter screen 1 . The water pump 8 can draw the cleaning solution from the liquid storage device 9 to the cleaning device to clean the filter screen 1 . When the cleaning solution is water, the water pump 8 can suck the condensed water from the liquid collecting port 15 into the liquid storage device 9 for storage. Wherein, the water includes condensed water generated during heat exchange of the air conditioner, and/or cleaning water injected by the user through the liquid injection port.

The cleaning device also includes a filter 11 , a water storage one-way valve 12 and a cleaning one-way valve 13 . The filter 11 is arranged at the liquid collection port 15 and the liquid injection port, and is used to filter impurities in the cleaning solution to prevent impurities from entering the liquid storage device 9 and blocking the cleaning pipeline. The water storage one-way valve 12 is arranged between the water storage device and the liquid collection port 15, and is used to prevent the water from flowing backward along the liquid collection port 15 into the air conditioner interior when the cleaning solution is water. cavity. The cleaning one-way valve 13 is arranged between the water storage device and the spraying device 10, and is used to prevent the condensed water from the spraying device 10 along the corresponding pipeline during the process of collecting the condensed water by the liquid storage device 9 when the cleaning solution is water. flow out.

Optionally, as shown in FIG. 3 and FIG. 4 , the spraying device 10 includes a plurality of cleaning nozzles 14 arranged vertically on one side of the air inlet of the air conditioner. The arrangement height of the cleaning nozzles 14 is greater than or equal to the height of the filter screen 1 , and is used to clean the filter screen 1 with the high-pressure water flow ejected from the cleaning nozzles 14 .

Optionally, the light transmittance detection device 16 includes a light irradiator 161 and a light sensor 162 , the light irradiator 161 and the light sensor 162 are respectively arranged on both sides of the filter screen 1 for detecting the light transmittance of the filter screen 1 . There may be one or more light transmittance detection devices 16, which are not specifically limited here.

Based on the above-mentioned structure of the air conditioner, as shown in FIG. 5 , an embodiment of the present disclosure provides a method for cleaning a filter screen, including:

S01, the air conditioner detects the light transmittance of the filter screen.

S02, the air conditioner turns on the cleaning device when the light transmittance is less than or equal to the set threshold.

S03, the air conditioner controls the circulation of the filter screen.

Using the method for cleaning the filter screen provided by the embodiments of the present disclosure, the cleanliness of the filter screen can be determined by detecting the light transmittance of the filter screen. When it is determined that the filter screen needs to be cleaned, the cleaning device is turned on and the filter screen Circular rotation to clean the filter in all directions. Through the above method, the cleanliness of the filter screen after the self-cleaning of the air conditioner running filter screen can be improved to the greatest extent. For example, when it is detected that the filter screen is dirty and clogged, first turn off the compressor, turn off the fans of the indoor unit and the outdoor unit, then control the rotation of the gears, and at the same time turn on the light irradiator and light sensor at the top of the cleaning nozzle. When the filter screen is rotating along the central axis, the light transmittance of the filter screen is detected in real time. The light transmittance is the highest when the filter screen is clean, and 3% of the highest value of the light transmittance is set as the set threshold. When it is detected that the light transmittance is less than or equal to 3% of the highest value of the light transmittance, the cleaning device is turned on.

As shown in FIG. 6 , an embodiment of the present disclosure provides a method for cleaning a filter screen, including:

S01, the air conditioner detects the light transmittance of the filter screen.

S021. When the light transmittance of the air conditioner is less than or equal to the set threshold, the air conditioner controls the liquid storage device to operate in a self-heating mode until the preheating condition is met.

S022, the air conditioner turns on the spraying device when the preheating condition is met.

S03, the air conditioner controls the circulation of the filter screen.

By adopting the method for cleaning the filter screen provided by the embodiments of the present disclosure, the operation efficiency of the filter screen cleaning can be improved. Due to the presence of lubricating oil and other substances inside the air conditioner, it is difficult to remove the sundries on the filter screen, and high-temperature cleaning can reduce the difficulty of cleaning to a certain extent. Therefore, by preheating the cleaning solution in the liquid storage device in advance, the service life of the pipeline will not be reduced due to the high temperature of the cleaning solution, and there is no need to install high-power heating equipment at the outlet, which reduces production costs and usage. energy consumption. By preheating in advance, the time required for heating at the outlet end is reduced, the water output at the outlet end is increased, and the efficiency of filter cleaning is also correspondingly improved. At the same time, the self-heating function of the liquid storage device also avoids the possibility of freezing of the cleaning solution caused by the low ambient temperature.

Optionally, the preheating condition includes: the heating duration of the self-heating mode of the liquid storage device is greater than or equal to the heating duration threshold; and/or, the temperature of the liquid in the liquid storage device is greater than or equal to the preheating temperature threshold.

In this way, the efficiency of filter screen cleaning can be better improved. The time is limited to ensure that the air conditioner will not be unable to work normally for a long time due to the filter cleaning time is too long. By limiting the temperature of the liquid in the liquid storage device, it is ensured that the liquid does not need to be heated for a long time at the outlet end, and the efficiency of filter screen cleaning is improved. The preheating temperature threshold is comprehensively measured by the service life of the pipeline, the heating energy consumption of the liquid storage device, and the heating efficiency of the outlet end. By satisfying the two restrictions at the same time, it is possible to avoid misjudgment of the air conditioner when the two restriction conditions are met at the same time, and to avoid the misjudgment of a single device from causing poor user experience.

As shown in FIG. 7 , an embodiment of the present disclosure provides a method for cleaning a filter screen, including:

S01, the air conditioner detects the light transmittance of the filter screen.

S023. The air conditioner controls the compressor to run according to the set operating power, and acquires the running time of the compressor running according to the set operating power.

S024. When the air conditioner is running for longer than or equal to the set time, the compressor is controlled to stop running and the axial flow fan of the air conditioner is turned off.

S021. When the light transmittance of the air conditioner is less than or equal to the set threshold, the air conditioner controls the liquid storage device to operate in the self-heating mode until the preheating condition is met.

S03, the air conditioner controls the circulation of the filter screen.

By adopting the method for cleaning the filter screen provided by the embodiments of the present disclosure, the indoor environment can be kept to a certain degree of comfort. When it is determined that the filter screen needs to be cleaned, the compressor should be operated at the set operating frequency for 10 minutes to maintain a stable indoor temperature, and then the compressor, the axial fan of the outdoor unit, and the cross-flow fan of the indoor unit should be turned off. The compressor is turned off after high-frequency operation to ensure the circulation of the refrigerant, which is conducive to maintaining a comfortable indoor environment. The purpose of turning off the fans of the indoor unit and the outdoor unit is to avoid blowing the cleaning solution out of the body during cleaning.

As shown in FIG. 8 , an embodiment of the present disclosure provides a method for cleaning a filter screen, including:

S01, the air conditioner detects the light transmittance of the filter screen.

S025, the air conditioner controls the spraying device to operate in a self-heating mode, raising the temperature of the liquid to the cleaning temperature.

S03, the air conditioner controls the circulation of the filter screen.

By adopting the method for cleaning the filter screen provided by the embodiments of the present disclosure, the cleaning efficiency and cleanliness of the filter screen can be improved. Due to the presence of lubricating oil and other substances inside the air conditioner, it is difficult to remove the sundries on the filter screen, and high-temperature cleaning can reduce the difficulty of cleaning to a certain extent. Therefore, through the self-heating function of the spraying device, dense high-temperature and high-pressure liquid can be sprayed to clean the filter screen, which effectively improves the efficiency of filter screen cleaning. At the same time, the high temperature and humid hot water vapor produced by the high temperature can sterilize the filter screen.

As shown in FIG. 9 , an embodiment of the present disclosure provides a method for cleaning a filter screen, including:

S04, the air conditioner acquires its own standby time.

S05, the air conditioner judges whether the standby time is less than the standby time threshold. If not, execute S01. If yes, execute S06.

S01, the air conditioner detects the light transmittance of the filter screen.

S06, the air conditioner sets the time of last cleaning of the filter screen as the reference time.

S07, the air conditioner judges whether the difference between the current time and the reference time is smaller than the difference threshold. If not, execute S01. If yes, execute S06.

S03, the air conditioner controls the circulation of the filter screen.

By adopting the method for cleaning the filter screen provided by the embodiments of the present disclosure, the increase in energy consumption caused by frequent detection of light transmittance can be reduced. Considering the frequency of use of the user's air conditioner, the air conditioner will automatically detect the cleanliness of the filter once the user has not used the air conditioner for a set period of time. For example, if the user does not turn on the air conditioner for 20 consecutive days, the air conditioner will check the cleanliness of the filter once. The purpose of cleaning the filter screen of the air conditioner in standby is to realize regular cleaning, and at the same time, it can also ensure the renewal of the liquid circulation in the liquid storage device. In the case that the user frequently uses the air conditioner, it will inevitably cause an increase in filter dust. Therefore, when the cumulative running time of the calculated air conditioner reaches the difference threshold, the cleanliness of the filter screen is detected once. For example, every time the air conditioner runs for 100 cumulative hours, the air conditioner will check the cleanliness of the filter screen once. At the same time, the regular cleaning of the accumulated standby time also takes into account the situation that the user occasionally turns on the air conditioner and then waits for a long time. Since the air quality in each area is different, when the light transmittance of the filter screen does not need to be cleaned for multiple consecutive detections, the difference threshold can be increased accordingly. The method of increasing may be to set the time since the last filter cleaning and the accumulated air conditioner running time between this filter cleaning as the difference threshold, or it may be set by the user.

Optionally, when the difference between the current time of the air conditioner and the reference time is less than the difference threshold, the duration of the air conditioner being turned on is acquired. When the opening time is greater than or equal to the liquid collection time, the air conditioner controls the water pump to turn on, and collects the condensed water generated by the air conditioner to the liquid storage device.

In this way, when the cleaning solution is water, the condensed water can be collected through the forward rotation of the water pump for cleaning the filter screen, so as to realize the secondary utilization of energy. For example, when a user uses an air conditioner, condensed water will be generated indoors when the air conditioner is cooling, and condensed water will be generated outdoors when the air conditioner is heating. After the user turns on the air conditioner for 30 minutes, the condensed water collection function is turned on, and the water pump rotates forward to absorb the condensed water. After being filtered by the filter, the clean condensed water is collected and stored in the liquid storage device. At this time, the water storage one-way valve is in the open state, and the cleaning one-way valve is in the closed state. The water storage device can only collect condensed water.

As shown in FIG. 10 , an embodiment of the present disclosure provides a method for cleaning a filter screen, including:

S01, the air conditioner detects the light transmittance of the filter screen.

S08. The air conditioner determines the target cycle times of the filter screen corresponding to the light transmittance.

S09, the air conditioner controls the filter screen to rotate circularly according to the target cycle rotation times.

By adopting the method for cleaning the filter screen provided by the embodiments of the present disclosure, the cleaning degree of the filter screen can be improved. By detecting the light transmittance of the filter screen, the number of rotations required for the current cleaning is determined to ensure that the cleanliness of the filter screen after cleaning can meet expectations. For example, the light transmittance of the filter screen and the preset corresponding relationship determine that the target number of rotations of the filter screen is 3 times. Then, by controlling the rotation of the gears, the filter screen is kept away from the air inlet, and at the same time, the cleaning device is opened to clean the filter screen. When the filter screen rotates to the maximum angle, by controlling the gear rotation again and controlling the cleaning device to continue cleaning the filter screen until the filter screen is reset, the single cycle rotation of the filter screen is completed. After the filter screen completes the set 3 cycles, it is determined that the cleaning process is over, and the air conditioner resumes normal operation.

Optionally, the air conditioner acquires the cumulative running time of the air conditioner after the filter screen cleaning process ends. When the accumulated operating time reaches the re-inspection time, the air conditioner detects the new light transmittance of the filter. When the new light transmittance is greater than the set threshold, the air conditioner is controlled to run normally. In the case that the new light transmittance is less than or equal to the set threshold, the air conditioner sets the new light transmittance as the set threshold and reminds the user.

In this way, the moisture on the filter screen is blown dry after the air conditioner runs normally for a period of time, and then the light transmittance of the filter screen is tested again to ensure the accuracy of light transmittance detection. For example, after the process of cleaning the filter screen of the air conditioner is completed, the normal operation state is resumed. 1 hour after the air conditioner returns to normal operation, check the light transmittance of the filter screen again. If the light transmittance is greater than the set threshold, it will continue to operate normally. If the light transmittance is still greater than or equal to 3% of the highest value of light transmittance, it is determined that the parameter deviation from the set threshold is caused by other factors (possibly because the filter is damaged, there are foreign objects in the filter, etc.). And the light transmittance of this test is used as the set threshold for subsequent tests to avoid continuous over-cleaning.

Optionally, when the air conditioner is running, the ratio value of the cleaning solution to the volume of the liquid storage device is periodically detected. In the case that the ratio value is less than or equal to the ratio threshold, the user is prompted to inject cleaning solution into the liquid storage device.

In this way, it can be ensured that there is sufficient cleaning solution in the liquid storage device when the filter screen cleaning process is started. For example, when the liquid level in the liquid storage device is lower than a quarter, the air conditioner starts the liquid level alarm process to remind the user to add water, and the user can inject cleaning solution into the liquid storage device through the liquid injection port. The user can be prompted by sending a message to the user's wearable device, or by an alert sound.

Optionally, in the standby state, the air conditioner heats and sterilizes the liquid storage device at intervals of a set period. In this way, the growth of bacteria in the liquid storage device can be prevented through regular heating and sterilization. Since the liquid storage device is easy to breed bacteria when the liquid does not flow for a long time, it is necessary to prevent the growth of bacteria in the liquid storage device by regular heating. For example, every 10 days, the liquid storage device is heated for 10 minutes and then kept warm for 10 minutes to keep the inside of the water storage device clean and hygienic.

As shown in FIG. 11 , an embodiment of the present disclosure provides a method for cleaning a filter screen, including:

S111. The air conditioner obtains the standby time and the running time.

S112. When the air conditioner is in standby for longer than the first threshold or running for longer than the second threshold, obtain the latest reference time for cleaning the filter screen.

S113, the air conditioner performs a corresponding filter screen cleaning operation according to the reference time.

Wherein, the reference time is a time point when the air conditioner performs filter screen cleaning last time. After the standby time of the air conditioner is greater than the first threshold and the filter screen cleaning operation is completed, the standby time is recalculated. After the running time of the air conditioner is greater than the second threshold and the filter screen cleaning operation is completed, the running time is recalculated.

Using the method for cleaning the filter screen provided by the embodiment of the present disclosure, the air conditioner obtains the standby time and the running time. If the standby duration is greater than the first threshold, it means that the standby duration of the air conditioner is relatively long, and the air conditioner has not been used for a long time, resulting in dust accumulation on the filter screen. If the running time is greater than the second threshold, it means that the air conditioner is running for a long time, and the filter screen is dirty and clogged due to long-term use. In the case of the above two types of dirty clogging, the air conditioner performs a corresponding filter cleaning operation according to the latest reference time of filter cleaning. The air conditioner can clean the filter screen in time both in the standby state and the running state, and improves the cleaning effect of the filter screen. In addition, the corresponding filter cleaning operation is performed according to the latest filter cleaning reference time, which avoids the time point when the air conditioner cleans the filter when it is in standby and the time when the air conditioner cleans the filter when it is running too close, resulting in The air conditioner frequently cleans the filter screen in a short period of time and consumes too much energy, which reduces the energy consumption of the air conditioner for filter screen cleaning.

Optionally, the air conditioner performs a corresponding filter screen cleaning operation according to the time difference, including: the air conditioner determines the first cycle rotation times of the filter screen corresponding to the time difference according to the first relationship; If it is less than the second difference threshold, the first cycle rotation number is determined as the target cycle rotation number; when the time difference is greater than or equal to the second difference threshold, the air conditioner, according to the first cycle rotation number and the latest The number of cycle rotations for filter screen cleaning determines the target number of cycle rotations; the air conditioner cleans the filter screen according to the target cycle number of rotations.

In this way, the air conditioner determines the first cycle rotation times of the filter screen corresponding to the time difference according to the first relationship, so that the cycle rotation times of the filter screen and the time difference value are more matched. The cleaning time of the filter screen is adapted to the time difference, and the cleaning effect of the filter screen is improved. In the case that the time difference is less than the second difference threshold, the last time the filter was cleaned is relatively close to the current time, and it is only necessary to clean the filter according to the number of rotations of the first cycle. In the case that the time difference is greater than or equal to the second difference threshold, the time point of the last filter screen cleaning is relatively far from the current time point, and the number of rotations of the first cycle of the latest filter screen cleaning is compared with the number of rotations of the first cycle. Compensation is performed to determine the number of target cycle rotations. The air conditioner performs filter cleaning according to the target number of cycles. The duration and time difference of filter screen cleaning are more adaptable, and the effect of filter screen cleaning is improved.

Optionally, the air conditioner determines the target cycle rotation number according to the first cycle rotation number and the latest filter screen cleaning cycle rotation number, including: the air conditioner determines that the target cycle rotation number corresponds to the latest filter screen cleaning cycle rotation number according to the second relationship The number of rotations of the compensation cycle; the air conditioner calculates the sum of the number of rotations of the first cycle and the number of rotations of the compensation cycle, and determines the sum value as the number of rotations of the target cycle; the number of rotations of the compensation cycle is in the same order as the number of rotations of the latest filter cleaning cycle negative correlation.

In this way, according to the second relationship, the air conditioner determines the number of compensation cycle rotations corresponding to the number of rotations of the latest filter screen cleaning cycle, so that the number of rotations of the compensation cycle is compatible with the number of rotations of the latest filter screen cleaning. The air conditioner calculates the sum of the number of rotations in the first cycle and the number of rotations in the compensation cycle, and determines the sum as the target number of rotations in the cycle. Compensating the number of rotations of the first cycle by compensating the number of rotations of the cycle to determine the number of rotations of the target cycle. The air conditioner performs filter cleaning according to the target number of cycles. The duration and time difference of filter screen cleaning are more adaptable, and the effect of filter screen cleaning is improved.

As shown in FIG. 12 , an embodiment of the present disclosure provides another method for cleaning a filter screen, including:

S121. The air conditioner determines a first threshold and a second threshold according to the current season.

S122. The air conditioner acquires the standby time and running time of the air conditioner.

S123. When the air conditioner is in standby for longer than the first threshold or running for longer than the second threshold, perform a corresponding filter cleaning operation according to the current state of the air conditioner and the reference time of the latest filter cleaning.

By adopting the method for cleaning the filter screen provided by the embodiments of the present disclosure, the air conditioner can clean the filter screen in time both in the standby state and the running state, thereby improving the cleaning effect of the filter screen. Carry out the corresponding filter cleaning operation according to the latest filter cleaning reference time, avoiding the time when the air conditioner cleans the filter when it is in standby and the time when the air conditioner is running when it is running too close, causing the air conditioner to The problem of excessive energy consumption for frequent filter screen cleaning in a short period of time reduces the energy consumption of the air conditioner for filter screen cleaning. In addition, the air conditioner determines the first threshold and the second threshold according to the current season, and uses the first threshold and the second threshold determined according to the season as the trigger conditions for cleaning the filter when the air conditioner is in standby and running, so that the filter The net cleaning is adapted to the season, and it can be started in time in different seasons, which improves the cleaning effect of the filter net.

Optionally, the air conditioner performs a corresponding filter cleaning operation according to the current state and the target number of cycles, including: when the current state of the air conditioner is in the standby state, the cleaning component is controlled to be activated, and the filter is controlled to rotate according to the target number of cycles Carry out cycle rotation; when the current state of the air conditioner is in the running state, increase the operating frequency of the compressor to the set operating frequency, and after the first period of time, turn off the compressor and the fan, control the start of the cleaning component, and control the filter according to The target cyclic rotation times are cyclically rotated. In this way, corresponding filter screen cleaning operations are respectively performed according to different current states of the air conditioner, thereby improving the effect of filter screen cleaning and user experience.

Optionally, before the air conditioner controls to start the cleaning component, it also includes: the air conditioner detects the outdoor ambient temperature; and the air conditioner heats the liquid storage device when the outdoor ambient temperature is lower than the temperature threshold. In this way, by increasing the ambient temperature detection, the liquid storage device is heated when the temperature is low, so as to avoid freezing inside the liquid storage device due to too low outdoor ambient temperature, which affects the cleaning process of the filter screen and the life of the liquid storage device.

Optionally, the air conditioner determines the first threshold and the second threshold according to the current season, including: the air conditioner determines the first threshold and the second threshold corresponding to the season according to a preset correspondence relationship;

Wherein, the first threshold in the same season is greater than the second threshold, the first threshold in spring or winter is greater than the first threshold in summer or autumn; the second threshold in spring or winter is greater than the second threshold in summer or autumn.

In this way, the first threshold and the second threshold corresponding to the season are determined according to the first relationship. The air conditioner determines the first threshold and the second threshold according to the current season, and uses the first threshold and the second threshold determined according to the first relationship as the trigger conditions for cleaning the filter when the air conditioner is in standby and running, so that the filter The net cleaning is adapted to the season, and it can be started in time in different seasons, which improves the cleaning effect of the filter net.

As shown in FIG. 13 , an embodiment of the present disclosure provides another method for cleaning a filter screen, including:

S131. The air conditioner obtains the standby duration and operating parameters of the air conditioner during operation.

S132. When the air conditioner has a standby time longer than a first threshold or an operating parameter meets a preset condition, obtain the latest reference time for cleaning the filter screen.

S133, the air conditioner performs a corresponding filter screen cleaning operation according to the reference time.

Wherein, the operating parameters include but are not limited to: air outlet temperature, operating frequency of the compressor, system pressure, system current and liquid discharge volume.

Wherein, the reference time is a time point when the air conditioner performs filter screen cleaning last time. After the standby time of the air conditioner is greater than the first threshold and the filter screen cleaning operation is completed, the standby time is recalculated.

Using the method for cleaning the filter provided by the embodiments of the present disclosure, the air conditioner obtains the standby time and operating parameters, and uses the standby time and operating parameters as the trigger conditions for cleaning the filter when the air conditioner is in standby and running, respectively, so that the filter The cleaning can be started in time, which improves the cleaning effect of the filter screen. In addition, the air conditioner performs the corresponding filter cleaning operation according to the latest filter cleaning reference time, which avoids the time point when the air conditioner cleans the filter when it is in standby and the time when the air conditioner cleans the filter when it is running. , leading to the problem of excessive energy consumption of the air conditioner for frequent filter cleaning in a short period of time, reducing the energy consumption of the air conditioner for filter cleaning.

Optionally, the preset condition includes: the absolute value of the difference between the operating parameter and the standard parameter is greater than an error threshold, or the ratio of the difference between the operating parameter and the standard parameter to the standard parameter is greater than the ratio threshold. Wherein, the preset conditions are not limited to the aforementioned two, and can also be other conditions that can indicate the error of the operating parameter and the standard parameter, for example, the absolute value of the difference between the operating parameter and the standard parameter is greater than the error threshold and lasts for a second duration, or , the ratio of the difference between the operating parameter and the standard parameter to the standard parameter is greater than the ratio threshold and lasts for a second duration, etc. In this way, when there is a large error between the operating parameters of the air conditioner and the standard parameters, the degree of dirtiness of the filter screen can be judged in time through the operating parameters. So that the air conditioner can start the filter screen cleaning function in time when it is running.

Optionally, after the air conditioner performs the corresponding filter screen cleaning operation according to the reference time when the operating parameters meet the preset conditions, the air conditioner also includes: the air conditioner obtains new operating parameters after performing the filter screen cleaning operation; When the new operating parameters meet the preset conditions, the new operating parameters are set as standard parameters.

In this way, after the air conditioner performs the filter screen cleaning operation, it acquires new operating parameters after the filter screen cleaning operation is performed. If the new operating parameters still meet the preset conditions, that is, the deviation between the new operating parameters and the standard parameters is still large after the filter screen is cleaned, it is determined that the new operating parameters deviate from the standard parameters due to other factors, such as voltage fluctuations. New operating parameters deviate from the standard parameters due to other reasons such as missing. In order to avoid the situation where the air conditioner determines that the operating parameters meet the preset conditions due to the above problems when the air conditioner is running, resulting in unnecessary filter cleaning operations, the air conditioner uses the new operating parameters as standard parameters to avoid continuous over-cleaning . If the new operating parameters do not meet the preset conditions, normal operation continues.

Optionally, after the air conditioner sets the new operating parameters as standard parameters, the method further includes: the air conditioner stops the filter screen cleaning operation within the set time period. In this way, the air conditioner takes the new operating parameters as standard parameters, indicating that the new operating parameters deviate from the standard parameters may be caused by other factors, for example, the new operating parameters may deviate from the standard parameters due to other reasons such as voltage fluctuation and lack of refrigerant. In order to prevent the air conditioner from determining that the operating parameters meet the preset conditions due to the above problems when the air conditioner is running, resulting in unnecessary filter cleaning operations, the air conditioner also stops the filter cleaning operation within the set time period. To avoid constant over-cleaning. For example, the next time the air conditioner obtains the operating parameters and the standby time is 100 hours later, so the minimum interval between two filter cleanings is 100 hours.

Optionally, the air conditioner performs a corresponding filter screen cleaning operation according to the current state and the time difference, including: the air conditioner determines the first cycle rotation times of the filter screen corresponding to the time difference according to the first relationship; When the time difference is less than the second difference threshold, determine the first cycle rotation number as the target cycle rotation number; when the time difference is greater than or equal to the second difference threshold, the air conditioner and the cycle times of the latest filter screen cleaning to determine the target cycle times; the air conditioner performs the corresponding filter cleaning operation according to the current state and the target cycle times. In this way, the first cycle rotation number is compensated by the latest filter screen cleaning cycle rotation number to determine the target cycle rotation number. The air conditioner performs the corresponding filter cleaning operation according to the current state and the target number of cycles. The duration of filter cleaning is more adapted to the current state and time difference, and the effect of filter cleaning is improved.

Optionally, the air conditioner determines the target cycle rotation number according to the first cycle rotation number and the latest filter screen cleaning cycle rotation number, including: the air conditioner determines that the target cycle rotation number corresponds to the latest filter screen cleaning cycle rotation number according to the second relationship The number of rotations of the compensation cycle; the air conditioner calculates the sum of the number of rotations of the first cycle and the number of rotations of the compensation cycle, and determines the sum value as the number of rotations of the target cycle; the number of rotations of the compensation cycle is in the same order as the number of rotations of the latest filter cleaning cycle negative correlation. In this way, the air conditioner compensates the number of rotations of the first cycle by compensating the number of rotations of the cycle, and cleans the filter screen according to the number of target cycles after compensation, so that the duration and time difference of the filter screen cleaning are more adaptable, and the filter screen cleaning is improved. Effect.

As shown in FIG. 14 , an embodiment of the present disclosure provides another method for cleaning a filter screen, including:

S141. The air conditioner obtains the standby duration and operation parameters of the air conditioner during operation.

S142. When the air conditioner has a standby time longer than a first threshold or an operating parameter meets a preset condition, obtain the latest reference time for cleaning the filter screen.

S143, the air conditioner performs a corresponding filter screen cleaning operation according to the reference time.

S144, when the air conditioner is in a standby state, heat and sterilize the liquid storage device at intervals of a set period.

By adopting the method for cleaning the filter screen provided by the embodiment of the present disclosure, in this way, the liquid storage device is heated and sterilized at set intervals, which can realize regular cleaning of the air conditioner, prevent bacteria from growing, and avoid performing filter screen cleaning in the air conditioner It will cause secondary pollution to the filter screen during operation. For example, every 10 days, the liquid storage device is heated for 10 minutes and then kept for 10 minutes to heat-sterilize the liquid storage device.

As shown in FIG. 15 , an embodiment of the present disclosure provides another method for cleaning a filter screen, including:

S151. The air conditioner determines a first threshold according to the current season.

S152. The air conditioner obtains the standby duration and operating parameters of the air conditioner.

S153. When the standby time of the air conditioner is greater than the first threshold or the operating parameters meet the preset conditions, perform a corresponding filter cleaning operation according to the season and the latest reference time for cleaning the filter.

Using the method for cleaning the filter provided by the embodiments of the present disclosure, the air conditioner obtains the standby time and operating parameters, and uses the standby time and operating parameters as the trigger conditions for cleaning the filter when the air conditioner is in standby and running, respectively, so that the filter The cleaning can be started in time, which improves the cleaning effect of the filter screen. In addition, the air conditioner determines the first threshold according to the current season, and performs the corresponding filter cleaning operation according to the season and the latest filter cleaning reference time, so that the filter cleaning is adapted to the current season, and the efficiency of filter cleaning is improved. Effect. It avoids the time point when the air conditioner cleans the filter screen when it is in standby and the time point when the air conditioner cleans the filter screen when the air conditioner is running. The energy consumption of the air conditioner for filter cleaning is reduced.

Optionally, after the air conditioner performs the corresponding filter screen cleaning operation according to the season and the reference time when the operating parameters meet the preset conditions, the air conditioner also includes: the air conditioner acquires new operating parameters after performing the filter screen cleaning operation; The air conditioner sets the new operating parameters as standard parameters when the new operating parameters meet the preset conditions.

Optionally, the air conditioner performs a corresponding filter cleaning operation according to the season and the latest reference time of filter cleaning, including: the time difference between the reference time and the current time of the air conditioner is greater than or equal to the first difference threshold In some cases, perform corresponding filter cleaning operations according to the season and time difference. In this way, the time point when the air conditioner cleans the filter screen when it is in standby is too close to the time point when the air conditioner cleans the filter screen when the air conditioner is running, resulting in the problem that the air conditioner frequently cleans the filter screen in a short period of time and consumes too much energy. , reducing the energy consumption of the air conditioner for filter cleaning. In addition, a corresponding filter screen cleaning operation is performed according to the current season, which improves the effect of filter screen cleaning.

Optionally, the air conditioner performs a corresponding filter screen cleaning operation according to the season and the time difference, including: the air conditioner determines the first cycle rotation times of the filter screen corresponding to the time difference according to the first relationship; If it is less than the second difference threshold, the first cycle rotation number is determined as the target cycle rotation number; when the time difference is greater than or equal to the second difference threshold value, according to the first cycle rotation number and the latest filter screen The number of cleaning cycles determines the target number of cycles; the air conditioner performs a corresponding filter cleaning operation according to the season and the target number of cycles.

In this way, the air conditioner determines the first cycle rotation number of the filter screen corresponding to the time difference according to the first relationship, so that the filter screen cycle rotation number and the time difference value are more matched. The cleaning time of the filter screen is adapted to the time difference, and the cleaning effect of the filter screen is improved. In the case that the time difference is less than the second difference threshold, the last time the filter was cleaned is relatively close to the current time, and it is only necessary to clean the filter according to the number of rotations of the first cycle. In the case that the time difference is greater than or equal to the second difference threshold, the time point of the last filter screen cleaning is relatively far from the current time point, and the number of rotations of the first cycle of the latest filter screen cleaning is compared to the number of rotations of the first cycle Compensation is performed to determine the number of target cycle rotations. The air conditioner performs the corresponding filter cleaning operation according to the current season and the target cycle times. The operation of cleaning the filter screen is adapted to the current season and time difference, and the effect of cleaning the filter screen is improved.

Optionally, the air conditioner performs a corresponding filter cleaning operation according to the season and the target number of cycles, including: the air conditioner controls to start the cleaning component when the air conditioner is in a standby state, and controls the filter to perform cleaning according to the target number of cycles. Circular rotation; when the air conditioner is in operation, the air conditioner controls the heating of the liquid storage device, adjusts the frequency of the compressor and the speed of the fan according to the season, controls the start of the cleaning component, and controls the filter to rotate according to the target number of cycles. In this way, the filter is cleaned by the cleaning unit in standby mode. In the running state, the heating of the liquid storage device, the frequency of the compressor and the speed of the fan are controlled according to the season for filter operation. According to the current state and season of the air conditioner, a corresponding filter screen cleaning operation is performed, which improves the effect of filter screen cleaning.

Optionally, the air conditioner controls the heating of the liquid storage device and adjusts the frequency of the compressor and the speed of the fan according to the season, including: when the season is spring or winter and the air conditioner is in the heating mode, the air conditioner controls the Running at one frequency, after a set period of time, reduce the frequency of the compressor to the second frequency, reduce the speed of the fan to the first speed; heat the liquid storage device. When the season of the air conditioner is summer or autumn and the air conditioner is in the cooling mode, the compressor is controlled to run at the first frequency, and the compressor and the fan are turned off after a set period of time.

In this way, the corresponding filter cleaning operation is carried out according to the season. For example, when the season is spring or winter is in the heating mode, the liquid storage device is turned on for heating, and the compressor runs at the highest set frequency for 10 minutes to maintain the indoor temperature. indoor humidity. Then the compressor runs at the lowest frequency, and the cross-flow fan of the indoor unit runs at the lowest speed. In the cooling mode in summer or autumn, the compressor runs at the highest frequency for 10 minutes to keep the indoor temperature stable. maintain stability. Through the operation corresponding to the season, the stability of the indoor environment is maintained and the user experience is improved.

Optionally, the air conditioner determines the first threshold according to the current season, including: the air conditioner determines the first threshold corresponding to the season according to a preset correspondence; wherein, the first thresholds of spring and winter are greater than those of summer and summer. Autumn's first threshold. In this way, determine the first threshold corresponding to the season according to the corresponding relationship. Compatible with the seasons, it can be started in time in different seasons, improving the cleaning effect of the filter screen.

As shown in FIG. 16 , an embodiment of the present disclosure provides a device for cleaning a filter, including a processor (processor) 100 and a memory (memory) 101 . Optionally, the device may also include a communication interface (Communication Interface) 102 and a bus 103. Wherein, the processor 100 , the communication interface 102 , and the memory 101 can communicate with each other through the bus 103 . Communication interface 102 may be used for information transfer. The processor 100 can invoke logic instructions in the memory 101 to execute the method for cleaning the filter screen of the above-mentioned embodiments.

In addition, the above logic instructions in the memory 101 may be implemented in the form of software functional units and may be stored in a computer-readable storage medium when sold or used as an independent product.

As a computer-readable storage medium, the memory 101 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 100 executes the program instructions/modules stored in the memory 101 to execute functional applications and data processing, that is, to implement the method for cleaning the filter in the above-mentioned embodiments.

The memory 101 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application program required by at least one function; the data storage area may store data created according to the use of the terminal device, and the like. In addition, the memory 101 may include a high-speed random access memory, and may also include a non-volatile memory.

An embodiment of the present disclosure provides an air conditioner, including the above-mentioned device for cleaning a filter screen.

An embodiment of the present disclosure provides a storage medium storing computer-executable instructions configured to execute the above-mentioned method for cleaning a filter screen.

The above-mentioned storage medium may be a transient storage medium or a non-transitory storage medium.

The technical solutions of the embodiments of the present disclosure can be embodied in the form of software products, which 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 perform all or part of the steps of the method described in the embodiments of the present disclosure. The aforementioned storage medium can be a non-transitory storage medium, including: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disc, etc. A medium that can store program code, or a transitory storage medium.

The above description and drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, procedural, and other changes. The examples merely represent possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. Also, the terms used in the present application are used to describe the embodiments only and are not used to limit the claims. As used in the examples and description of the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well unless the context clearly indicates 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 listed ones. Additionally, when used in this application, the term "comprise" and its variants "comprises" and/or comprising (comprising) etc. 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 limitations, an element defined by the statement "comprising a ..." does not exclude the presence of additional identical elements in the process, method or apparatus comprising said element. Herein, what each embodiment focuses on may be the difference from other embodiments, and the same and similar parts of the various embodiments may refer to each other. For the method, product, etc. disclosed in the embodiment, if it corresponds to the method part disclosed in the embodiment, then the relevant part can refer to the description of the method part.

Those skilled in the art can appreciate that the units and algorithm steps of the examples 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 by hardware or software may depend on the specific application and design constraints of the technical solution. Said artisans may implement the described functions using different methods for each particular application, but such implementation should not be regarded as exceeding the scope of the disclosed embodiments. The skilled person can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device 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 Or it can be integrated into another system, or some features can be ignored, or not implemented. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to implement this embodiment. In addition, each functional unit in the embodiments of the present disclosure may be integrated into one processing unit, each unit may exist separately physically, 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 disclosure. In this regard, each block in a flowchart or block diagram may represent a module, program segment, or part of code that includes one or more Executable instructions. In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks in succession may, in fact, be executed substantially concurrently, or they 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, the operations or steps corresponding to different blocks may also occur in a different order than that disclosed in the description, and sometimes there is no specific agreement 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 in the block diagrams and/or flowcharts, and combinations of blocks in the block diagrams and/or flowcharts, can be implemented by a dedicated hardware-based system that performs the specified function or action, or can be implemented by dedicated hardware implemented in combination with computer instructions.

Claims

A method for cleaning a filter screen, characterized in that the method is applied to an air conditioner, and the air conditioner includes a cyclically rotating filter screen and a cleaning device, and the cleaning device is used for cleaning the filter screen; The methods include:

Detect the light transmittance of the filter;

In the case that the light transmittance is less than or equal to a set threshold, the cleaning device is turned on and the filter screen is controlled to rotate cyclically.
The method according to claim 1, wherein the cleaning device comprises a water pump, a liquid storage device and a spraying device, the liquid storage device has a self-heating function, and the spraying device has a self-heating function; said cleaning device, including:

Control the liquid storage device to run in self-heating mode until the preheating condition is met;

When the preheating condition is met, the spraying device is turned on.
The method according to claim 2, wherein the preheating conditions include:

The heating duration of the self-heating mode of the liquid storage device is greater than or equal to the heating duration threshold; and/or, the temperature of the liquid in the liquid storage device is greater than or equal to the preheating temperature threshold.
The method according to claim 2, further comprising: before the liquid storage device operates in a self-heating mode:

Control the compressor to run according to the set operating power, and obtain the running time of the compressor running according to the set operating power;

When the running time is greater than or equal to the set time, the compressor is controlled to stop running and the axial flow fan of the air conditioner is turned off.
The method according to claim 2, characterized in that, after the opening of the sprinkler, further comprising:

Control the sprinkler to run in self-heating mode, raising the temperature of the liquid to the cleaning temperature.
The method according to any one of claims 1 to 5, wherein, before the light transmittance of the detection filter screen, further comprising:

Obtain the standby time of the air conditioner;

When the standby duration is greater than or equal to the standby duration threshold, the light transmittance of the filter screen is detected.
The method according to claim 6, characterized in that after said obtaining the standby time of the air conditioner, further comprising:

In the case that the standby time is less than the standby time threshold, the time of cleaning the filter screen for the last time is set as the reference time;

When the difference between the current time and the reference time is greater than or equal to the difference threshold, the light transmittance of the filter is detected.
The method according to any one of claims 1 to 5, characterized in that, after the opening of the cleaning device, further comprising:

Determining the target number of rotations of the filter screen corresponding to the light transmittance;

The filter screen is controlled to rotate cyclically according to the target number of cyclic rotations.
A device for cleaning a filter, comprising a processor and a memory storing program instructions, wherein the processor is configured to execute any one of claims 1 to 8 when running the program instructions. The described method for filter cleaning.
An air conditioner, characterized in that it comprises:

filter screen, the filter screen can rotate circularly;

The cleaning device includes a water pump, a liquid storage device and a spraying device. The liquid storage device has a self-heating function for storing the cleaning solution and preheating the cleaning solution; the spraying device has a self-heating function and is used for heating the cleaning solution. And cleaning the filter screen; the water pump can suck the cleaning solution from the liquid collection port into the liquid storage device or pump the cleaning solution from the liquid storage device to the cleaning device to clean the filter screen; and ,

The device for filter screen cleaning as claimed in claim 9 .