CN109373504B - Evaporator self-cleaning method for increasing frost layer thickness and air conditioner - Google Patents

Evaporator self-cleaning method for increasing frost layer thickness and air conditioner Download PDF

Info

Publication number
CN109373504B
CN109373504B CN201811215529.XA CN201811215529A CN109373504B CN 109373504 B CN109373504 B CN 109373504B CN 201811215529 A CN201811215529 A CN 201811215529A CN 109373504 B CN109373504 B CN 109373504B
Authority
CN
China
Prior art keywords
evaporator
indoor unit
temperature
fan
compressor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201811215529.XA
Other languages
Chinese (zh)
Other versions
CN109373504A (en
Inventor
王现林
廖敏
吴俊鸿
连彩云
夏光辉
赖孝成
陶梦春
彭光前
田雅颂
车雯
梁之琦
周金声
翟振坤
孙晨
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
Original Assignee
Gree Electric Appliances Inc of Zhuhai
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gree Electric Appliances Inc of Zhuhai filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN201811215529.XA priority Critical patent/CN109373504B/en
Publication of CN109373504A publication Critical patent/CN109373504A/en
Priority to JP2019187243A priority patent/JP6936291B2/en
Application granted granted Critical
Publication of CN109373504B publication Critical patent/CN109373504B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2221/00—Details or features not otherwise provided for
    • F24F2221/22—Cleaning ducts or apparatus
    • F24F2221/225—Cleaning ducts or apparatus using a liquid

Abstract

The invention belongs to the technical field of air conditioners and discloses an evaporator self-cleaning method for improving the thickness of a frost layer and an air conditioner. The method comprises the following steps: adjusting the rotating speed of a fan and/or the working frequency of a compressor to enable the surface of the evaporator to condense for the first time; the fan is turned off or the rotating speed of the fan is adjusted to be the preset frosting rotating speed and/or the working frequency of the compressor is adjusted, and the temperature of the copper pipe on the surface of the evaporator is controlled to be less than or equal to the preset frosting control temperature TFrost controlFrosting the surface of the evaporator for the mth time, wherein m is an integer more than or equal to 1; adjusting the rotating speed of the fan to a predetermined dewing rotating speed, adjusting the working frequency of the compressor or the opening of the electronic expansion valve, and controlling the temperature of the copper pipe on the surface of the evaporator to be less than or equal to a preset dewing control temperature TDew controlEnabling the surface of the evaporator to form condensation for the nth time, wherein n is an integer greater than or equal to 2; the compressor is stopped, and the rotating speed of the fan is adjusted to defrost and dry the surface of the evaporator. During self-cleaning, the evaporator is enabled to generate thicker frost, and during defrosting, greater water flow impact is generated, so that the cleaning effect is improved.

Description

Evaporator self-cleaning method for increasing frost layer thickness and air conditioner
Technical Field
The invention belongs to the technical field of air conditioners, and particularly relates to an evaporator self-cleaning method for improving the thickness of a frost layer.
Background
Air conditioning products typically employ finned tube heat exchangers as evaporators. After a certain period of use, dust in the air of a room flows through the evaporator along with the incoming air, and part of dust particles can adhere to the surfaces of the wetted evaporator fins (mainly concentrated on the windward side of the evaporator) to form air-side dirt, which inevitably affects the heat transfer and the pressure drop of the evaporator, so that the due performance of the evaporator is reduced, and bacteria are easily and rapidly bred on the surface of the heat exchanger. The breeding and gathering of bacteria can generate various viscous secretions, more dust is adsorbed on the surface of the evaporator, and a vicious circle is formed. Therefore, the indoor unit of the air conditioner needs to be cleaned frequently in the using process.
At present, the evaporator self-cleaning technology of the air conditioner sold in the market mainly comprises four processes of condensation, frosting, defrosting and drying. In the condensation stage, the water vapor in the air is condensed on the evaporator fins, then the condensed water is formed into a frost layer in the frosting stage, then the frost layer is melted in the defrosting and drying stages, and the evaporator fins and the copper pipes are washed by the water after the frost is melted, for example, the Chinese patent applications CN104848738A, CN106152413A, CN106196476A and the like.
However, the amount of frost formed by the existing evaporator self-cleaning technology mainly comes from the amount of water hanging on the fins, and the water hanging capacity of the fins is limited. The part of condensed water exceeding the total amount of water hanging on the fins in the condensation stage flows out along the water passage and cannot be used for forming a frost layer on the fins. In addition, in the frosting stage of the evaporator, in order to reduce the surface temperature of the evaporator to a lower temperature, the internal fan is normally closed, so that no air circulates, and no more water vapor is absorbed. The above factors cause a problem in that it is difficult to form thick frost on the evaporator. A large amount of water can not be generated in the defrosting stage to wash the evaporator fins and the copper pipes, so that the self-cleaning effect is not ideal.
Disclosure of Invention
In view of the above problems in the prior art, it is an object of the present invention to provide a method for self-cleaning an evaporator with increased frost layer thickness, which increases the thickness of the frost layer formed on the evaporator by repeatedly performing condensation and frost formation, and finally improves the self-cleaning effect of the air conditioner.
It is another object of the present invention to provide an air conditioner capable of performing the above-mentioned evaporator self-cleaning method for increasing the thickness of a frost layer.
In order to achieve the above object, the present invention adopts the following technical solutions.
The invention provides an evaporator self-cleaning method for improving the thickness of a frost layer, which comprises the following steps:
adjusting the rotating speed of a fan of the indoor unit and/or the working frequency of a compressor to enable the surface of an evaporator of the indoor unit to be subjected to condensation for the first time;
turning off the indoor unit fan or adjusting the rotation speed of the indoor unit fan to a preset frosting rotation speed and/or adjusting the working frequency of the compressor, and controlling the temperature of the copper pipe on the surface of the evaporator to be less than or equal to a preset frosting control temperature TFrost controlFrosting the surface of the evaporator of the indoor unit for the mth time, wherein m is an integer more than or equal to 1;
adjusting the rotation speed of the indoor unit fan to a predetermined dewing rotation speed, adjusting the working frequency of the compressor or the opening of the electronic expansion valve, and controlling the temperature of the copper tube on the surface of the evaporator to be less than or equal to a predetermined dewing control temperature TDew controlEnabling the surface of the indoor unit evaporator to be subjected to condensation for the nth time, wherein n is an integer greater than or equal to 2;
and stopping the compressor, and adjusting the rotating speed of a fan of the indoor unit to defrost and dry the surface of the evaporator of the indoor unit.
Further, the method further comprises:
judging whether the total surface frosting time of the indoor unit evaporator is greater than or equal to the preset frosting time, if so, entering the indoor unit evaporator surface defrosting and drying stage; if not, condensation and frosting on the surface of the indoor unit evaporator are carried out next time.
Wherein, adjust the rotational speed of indoor set fan and/or the operating frequency of compressor for the first dewfall of indoor set evaporimeter surface includes:
acquiring the current indoor environment temperature and the current indoor environment humidity of the indoor unit, and determining the indoor condensation temperature range of condensation on the surface of an evaporator of the indoor unit;
and the rotating speed of the fan of the indoor unit is reduced, and the temperature of the evaporator of the indoor unit is controlled by adjusting the working frequency of the compressor so as to maintain the temperature within the indoor condensation temperature range.
Further, acquire indoor current ambient temperature and the current ambient humidity of air conditioner place, confirm the dewfall temperature range of indoor set evaporimeter surface dewfall, include:
determining the indoor dew point temperature T under the current environment according to the current indoor environment temperature and the current indoor environment humidity0；
The indoor condensation temperature range is T1≤T0-TRepair the，
Wherein, TRepair theThe temperature is the corrected temperature of the condensation stage of the indoor unit evaporator.
Preferably, the corrected temperature T at the condensation stage of the indoor unit evaporatorRepair theThe temperature was 8 ℃.
Furthermore, the reducing the rotation speed of the fan of the indoor unit and controlling the temperature of the evaporator of the indoor unit by adjusting the working frequency of the compressor to maintain the temperature within the indoor condensation temperature range includes:
the indoor unit fan runs at a preset low wind speed;
copper for detecting indoor unit evaporatorThe surface temperature T of the tube, if T > T0-TRepair theIncreasing the working frequency of the compressor; if T is less than or equal to T0-TRepair theThe operating frequency of the compressor is maintained.
The method comprises the steps of turning off an indoor unit fan or adjusting the rotating speed of the indoor unit fan to be a frosting preset rotating speed and/or adjusting the working frequency of a compressor, and controlling the temperature of a copper pipe on the surface of an evaporator to be less than or equal to a preset frosting control temperature TFrost controlSo that the surface of the evaporator of the indoor unit frosts for the mth time, wherein m is an integer more than or equal to 1, and the method comprises the following steps:
the indoor fan runs at a frosting preset rotating speed or is turned off;
detecting the surface temperature T of the copper pipe of the evaporator of the indoor unit, if T is more than TFrost controlIncreasing the working frequency of the compressor; if T is less than or equal to TFrost controlThe operating frequency of the compressor is maintained.
Adjusting the rotation speed of the fan of the indoor unit to a preset dewing rotation speed, adjusting the working frequency of a compressor or the opening degree of an electronic expansion valve, and controlling the temperature of a copper pipe on the surface of an evaporator to be less than or equal to a preset dewing control temperature TDew controlThe method for enabling the surface of the evaporator of the indoor unit to have condensation for the nth time, wherein n is an integer greater than or equal to 2, and comprises the following steps:
the indoor unit fan operates at a dew condensation preset rotating speed;
detecting the surface temperature T of the copper pipe of the evaporator of the indoor unit, if T is more than TDew controlIncreasing the working frequency of the compressor or increasing the opening of the electronic expansion valve; if T is less than or equal to TDew controlAnd maintaining the working frequency of the compressor and the opening of the electronic expansion valve unchanged.
Wherein, the compressor is shut down, adjusts the rotational speed of indoor set fan for indoor set evaporimeter surface defrosting and stoving include:
stopping the compressor, detecting the surface temperature T of the copper pipe of the evaporator of the indoor unit, and if T is more than TTransformingIf the temperature is +2 ℃, increasing the rotating speed of the fan of the indoor unit; if T is less than or equal to TTransformingReducing the rotating speed of the fan of the indoor unit at the temperature of minus 2 ℃; if TTransforming-2℃＜TInner part≤TTransformingAt +2 ℃, keeping the rotating speed of the fan of the indoor unit unchanged;
wherein, TTransformingAnd the target temperature of the surface of the copper pipe of the evaporator of the indoor unit is preset for the defrosting and drying stages of the evaporator of the indoor unit.
Preferably, the target temperature T of the surface of the copper pipe of the indoor unit evaporator in the defrosting and drying stages of the indoor unit evaporator isTransformingIs 50-65 ℃.
Further, the compressor is shut down, adjusts the rotational speed of indoor set fan for indoor set evaporimeter surface defrosting and stoving still include:
detecting the rotating speed R of the indoor unit fan, if R is more than or equal to RHeat generationIf so, the electric auxiliary heating function is started; if R < RHeat generation50RPM, the electric auxiliary heating function is turned off; if R isHeat generation-50RPM＜R≤RHeat generationIf so, maintaining the current state of the electric auxiliary heating function;
wherein R isHeat generationThe lowest rotating speed for starting the electric auxiliary heating function preset in the defrosting and drying stages of the evaporator of the indoor unit is achieved.
Preferably, the lowest rotating speed R of the electric auxiliary heating function is started in the defrosting and drying stages of the evaporator of the indoor unitHeat generationThe rotating speed of the indoor unit fan corresponding to the preset middle wind speed is set for the indoor unit fan.
Further, the predetermined dew formation rotating speed is a second lowest rotating speed, and the predetermined frosting rotating speeds are the lowest rotating speeds.
Further, the condensation control temperature is 0 ℃, and the frosting control temperature is-5 ℃.
Furthermore, the duration time of the first condensation and the nth condensation on the surface of the indoor unit evaporator is 5 min-15 min, the duration time of the mth frosting on the surface of the indoor unit evaporator is 5 min-15 min, m is an integer greater than or equal to 1, and n is an integer greater than or equal to 2.
The invention also provides an air conditioner which can execute the evaporator self-cleaning method for improving the thickness of the frost layer.
According to the evaporator self-cleaning method for improving the frost layer thickness, condensation and frosting are carried out on the surface of the indoor unit evaporator repeatedly, and meanwhile, the indoor unit fan is started to increase water vapor entering the indoor unit when condensation or frosting occurs, so that the water quantity on the surface of the evaporator during condensation is increased, the frost layer thickness on the surface of the indoor unit evaporator is finally improved, the water quantity on the surface of the indoor unit evaporator in a defrosting stage is further increased, the water flow is increased, and the self-cleaning effect is improved.
In the condensation stage, except for condensation once, in the nth condensation period (n is an integer more than or equal to 2), the temperature of the surface pipe of the evaporator is controlled below 0 ℃ by adjusting the frequency of a compressor and the opening degree of an electronic expansion valve, so that the original frost layer is prevented from being melted by air flow; and during this time it must be ensured that the inner fan is in an open state, which is done to ensure that air is always flowing over the evaporator surface and that moisture entrained in the air is condensed onto the evaporator surface.
But the temperature of the surface copper pipe of the evaporator at the first condensation stage can be properly higher (can be more than 0 ℃), but not higher than T0-8℃(T0The dew point temperature of the current air), too high a temperature of the evaporator surface will result in no condensation or inefficient condensation of water vapor in the air. Meanwhile, on the premise of meeting the pipe temperature range, the air speed of the inner fan can be higher, so that more air flows can pass through the surface of the evaporator, and the water with more condensation energy is facilitated.
In the frosting stage of the invention, the temperature of the copper pipe on the surface of the evaporator of the indoor unit is recommended to be controlled below minus 5 ℃ so as to ensure the smooth formation of the frost layer. While the inner fan at this time is advised to remain off or the lowest damper.
The number of times of repetition of the condensation stage and the frosting stage is determined according to specific situations, and the time length of each condensation or frosting is not fixed and can be determined according to specific situations. By repeatedly performing the condensation, frosting process during the self-cleaning of the evaporator, the frost layer on the surface of the evaporator gets thicker and thicker. Compared with the common self-cleaning process of one-time condensation and one-time frosting, the invention has the advantages that the frost layer formed on the surface of the evaporator is thicker, the amount of the melted water is more during defrosting, and the water flow impact cleaning effect is better.
The invention has the following beneficial effects: during the self-cleaning period of the air conditioner, the evaporator of the indoor unit can be formed with a thicker frost layer, and the evaporator has larger water flow impact during defrosting, so that the cleaning effect is improved.
Drawings
FIG. 1 is a flow chart of self-cleaning in example 1 of the present invention;
FIG. 2 is a schematic diagram showing a comparison between a self-cleaning process in example 1 of the present invention and a self-cleaning process in the prior art;
fig. 3 is a flow chart of self-cleaning in embodiment 2 of the present invention.
Detailed Description
In order to more clearly illustrate the technical solutions of the present invention, the following description is given with reference to specific embodiments and accompanying drawings, and it is obvious that the embodiments in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained according to these embodiments without any inventive work.
Example 1
The embodiment relates to an air conditioner, which can perform self-cleaning of an indoor unit according to the following procedures, as shown in fig. 1, specifically includes (the air conditioner control program is preset to successively go through 4 condensation-frosting processes):
(1) and entering a first condensation stage of the indoor unit of the air conditioner, and adjusting the rotating speed of a fan of the indoor unit and/or the working frequency of a compressor to enable the surface of an evaporator of the indoor unit to be subjected to condensation for the 1 st time.
Firstly, acquiring the current indoor environment temperature and the current indoor environment humidity of an indoor unit, and determining the indoor dew point temperature T under the current environment according to the current indoor environment temperature and the current indoor environment humidity0The temperature is 18 ℃; setting a corrected temperature T at the condensation stage of an indoor unit evaporatorRepair theThe temperature was 8 ℃.
The indoor condensation temperature range is T1≤T0-TRepair the＝10℃。
Then, the rotating speed of the fan of the indoor unit is reduced, the indoor unit runs at a preset low wind speed, and the working frequency of the compressor is adjusted to control the temperature of the evaporator of the indoor unit to be maintained in the indoor condensation temperature range: detecting the surface temperature T of a copper pipe of an evaporator of the indoor unit, and increasing the working frequency of the compressor if the T is more than 10 ℃; if T is less than or equal to 10 ℃, the working frequency of the compressor is kept unchanged.
The duration of the 1 st condensation on the surface of the indoor unit evaporator is 15 min.
(2) Entering a first frosting stage of the indoor unit of the air conditioner, turning off the fan of the indoor unit or adjusting the rotating speed of the fan of the indoor unit to a frosting preset rotating speed and/or adjusting the working frequency of a compressor, and controlling the temperature of a copper pipe on the surface of an evaporator to be less than or equal to a preset frosting control temperature TFrost controlSo that the surface of the evaporator of the indoor unit frosts for the 1 st time.
Setting frosting control temperature TFrost controlIs-5 ℃.
The indoor fan runs at a frosting preset rotating speed, namely at the lowest rotating speed, or the indoor fan is turned off (the fan is turned off when the temperature does not meet the requirement at the lowest wind speed);
detecting the surface temperature T of a copper pipe of an evaporator of the indoor unit, and increasing the working frequency of the compressor if the temperature T is more than-5 ℃; if T is less than or equal to-5 ℃, the working frequency of the compressor is kept unchanged.
The duration of the 1 st frosting on the surface of the evaporator of the indoor unit is 15 min.
(3) Entering a second condensation stage of the indoor unit of the air conditioner, adjusting the rotating speed of a fan of the indoor unit to a preset condensation rotating speed, adjusting the working frequency of a compressor or the opening degree of an electronic expansion valve, and controlling the temperature of a copper pipe on the surface of an evaporator to be less than or equal to a preset condensation control temperature TDew controlSo that the 2 nd condensation on the surface of the indoor unit evaporator is formed.
Setting the dew control temperature TDew controlIs 0 ℃.
The indoor unit fan is operated at a predetermined dew condensation rotation speed, i.e., at a second low rotation speed (in order to ensure sufficient air flow across the evaporator surface);
detecting the surface temperature T of a copper pipe of an evaporator of the indoor unit, and if the T is more than 0 ℃, increasing the working frequency of the compressor or increasing the opening of the electronic expansion valve (if the working frequency of the compressor is increased to the highest frequency, the temperature does not meet the requirement, increasing the opening of the expansion valve); if T is less than or equal to 0 ℃, the working frequency of the compressor and the opening of the electronic expansion valve are maintained unchanged.
The duration of the 2 nd condensation on the surface of the indoor unit evaporator is 5 min.
(4) Entering a second frosting stage of the indoor unit of the air conditioner, turning off the fan of the indoor unit or adjusting the rotating speed of the fan of the indoor unit to a frosting preset rotating speed and/or adjusting the working frequency of a compressor, and controlling the temperature of a copper pipe on the surface of an evaporator to be less than or equal to a preset frosting control temperature TFrost controlSo that the surface of the evaporator of the indoor unit is frosted for the 2 nd time.
Setting frosting control temperature TFrost controlIs-5 ℃.
The indoor fan runs at a frosting preset rotating speed, namely at the lowest rotating speed, or the indoor fan is turned off (the fan is turned off when the temperature does not meet the requirement at the lowest wind speed);
detecting the surface temperature T of a copper pipe of an evaporator of the indoor unit, and increasing the working frequency of the compressor if the temperature T is more than-5 ℃; if T is less than or equal to-5 ℃, the working frequency of the compressor is kept unchanged.
The duration of the 2 nd frosting on the surface of the evaporator of the indoor unit is 5 min.
(5) Entering a third condensation stage of the indoor unit of the air conditioner, adjusting the rotating speed of a fan of the indoor unit to a predetermined condensation rotating speed, adjusting the working frequency of a compressor or the opening degree of an electronic expansion valve, and controlling the temperature of a copper pipe on the surface of an evaporator to be less than or equal to a preset condensation control temperature TDew controlSo that the 3 rd condensation on the surface of the indoor unit evaporator is formed.
Setting the dew control temperature TDew controlIs 0 ℃.
The indoor unit fan is operated at a predetermined dew condensation rotation speed, i.e., at a second low rotation speed (in order to ensure sufficient air flow across the evaporator surface);
detecting the surface temperature T of a copper pipe of an evaporator of the indoor unit, and if the T is more than 0 ℃, increasing the working frequency of the compressor or increasing the opening of the electronic expansion valve (if the working frequency of the compressor is increased to the highest frequency, the temperature does not meet the requirement, increasing the opening of the expansion valve); if T is less than or equal to 0 ℃, the working frequency of the compressor and the opening of the electronic expansion valve are maintained unchanged.
The duration of the 3 rd condensation on the surface of the indoor unit evaporator is 5 min.
(6) Entering a third frosting stage of the indoor unit of the air conditioner, turning off the fan of the indoor unit or adjusting the rotating speed of the fan of the indoor unit to a frosting preset rotating speed and/or adjusting the working frequency of a compressor, and controlling the temperature of a copper pipe on the surface of an evaporator to be less than or equal to a preset frosting control temperature TFrost controlSo that the surface of the evaporator of the indoor unit is frosted for the 3 rd time.
Setting frosting control temperature TFrost controlIs-5 ℃.
The indoor fan runs at a frosting preset rotating speed, namely at the lowest rotating speed, or the indoor fan is turned off (the fan is turned off when the temperature does not meet the requirement at the lowest wind speed);
detecting the surface temperature T of a copper pipe of an evaporator of the indoor unit, and increasing the working frequency of the compressor if the temperature T is more than-5 ℃; if T is less than or equal to-5 ℃, the working frequency of the compressor is kept unchanged.
The duration of the 3 rd frosting on the surface of the evaporator of the indoor unit is 5 min.
(7) Entering a fourth condensation stage of the indoor unit of the air conditioner, adjusting the rotating speed of a fan of the indoor unit to be a predetermined condensation rotating speed, adjusting the working frequency of a compressor or the opening degree of an electronic expansion valve, and controlling the temperature of a copper pipe on the surface of an evaporator to be less than or equal to a preset condensation control temperature TDew controlSo that the 4 th condensation on the surface of the indoor unit evaporator is formed.
Setting the dew control temperature TDew controlIs 0 ℃.
The indoor unit fan is operated at a predetermined dew condensation rotation speed, i.e., at a second low rotation speed (in order to ensure sufficient air flow across the evaporator surface);
detecting the surface temperature T of a copper pipe of an evaporator of the indoor unit, and if the T is more than 0 ℃, increasing the working frequency of the compressor or increasing the opening of the electronic expansion valve (if the working frequency of the compressor is increased to the highest frequency, the temperature does not meet the requirement, increasing the opening of the expansion valve); if T is less than or equal to 0 ℃, the working frequency of the compressor and the opening of the electronic expansion valve are maintained unchanged.
The duration of 4 th condensation on the surface of the indoor unit evaporator is 5 min.
(8) Entering the fourth frosting stage of the indoor unit of the air conditioner, and closing the indoorThe rotating speed of the fan of the indoor unit is adjusted to be a frosting preset rotating speed and/or the working frequency of the compressor is adjusted, and the temperature of a copper pipe on the surface of the evaporator is controlled to be less than or equal to a preset frosting control temperature TFrost controlSo that the surface of the evaporator of the indoor unit is frosted for the 4 th time.
Setting frosting control temperature TFrost controlIs-5 ℃.
The indoor fan runs at a frosting preset rotating speed, namely at the lowest rotating speed, or the indoor fan is turned off (the fan is turned off when the temperature does not meet the requirement at the lowest wind speed);
detecting the surface temperature T of a copper pipe of an evaporator of the indoor unit, and increasing the working frequency of the compressor if the temperature T is more than-5 ℃; if T is less than or equal to-5 ℃, the working frequency of the compressor is kept unchanged.
The duration of the 4 th frosting on the surface of the evaporator of the indoor unit is 5 min.
(9) Entering a defrosting and drying stage of the indoor unit evaporator, stopping the compressor, and adjusting the rotating speed of a fan of the indoor unit to defrost and dry the surface of the indoor unit evaporator; setting target temperature T of surface of copper pipe of evaporator of indoor unit in defrosting and drying stages of evaporator of indoor unitTransformingIs 50 ℃.
Stopping the compressor, detecting the surface temperature T of a copper pipe of an evaporator of the indoor unit, and increasing the rotating speed of a fan of the indoor unit if the T is more than 52 ℃; if T is less than or equal to 48 ℃, reducing the rotating speed of the fan of the indoor unit, and if T is less than 48 ℃Inner partAnd when the temperature is less than or equal to 50 ℃, keeping the rotating speed of the fan of the indoor unit unchanged.
Meanwhile, detecting the rotating speed R of the indoor unit fan, and if R is larger than or equal to RHeat generationIf so, the electric auxiliary heating function is started; if R < RHeat generation50RPM, the electric auxiliary heating function is turned off; if R isHeat generation-50RPM＜R≤RHeat generationIf so, maintaining the current state of the electric auxiliary heating function; wherein R isHeat generationThe lowest rotating speed for starting the electric auxiliary heating function preset in the defrosting and drying stages of the evaporator of the indoor unit is achieved. Set RHeat generationThe rotating speed of the indoor unit fan corresponding to the preset middle wind speed is set for the indoor unit fan.
Through the above process, the air conditioner in this embodiment can realize self-cleaning of the indoor unit, and fig. 2 is a schematic diagram illustrating a comparison between the self-cleaning process in this embodiment and the self-cleaning process in the prior art.
Example 2
The present embodiment relates to an air conditioner, which can perform self-cleaning of an indoor unit according to the following procedure, as shown in fig. 3, specifically including:
(1) and entering a first condensation stage of the indoor unit of the air conditioner, and adjusting the rotating speed of a fan of the indoor unit and/or the working frequency of a compressor to enable the surface of an evaporator of the indoor unit to be subjected to condensation for the 1 st time.
Firstly, acquiring the current indoor environment temperature and the current indoor environment humidity of an indoor unit, and determining the indoor dew point temperature T under the current environment according to the current indoor environment temperature and the current indoor environment humidity0The temperature is 18 ℃; setting a corrected temperature T at the condensation stage of an indoor unit evaporatorRepair theThe temperature was 8 ℃.
The indoor condensation temperature range is T1≤T0-TRepair the＝10℃。
Then, the rotating speed of the fan of the indoor unit is reduced, the indoor unit runs at a preset low wind speed, and the working frequency of the compressor is adjusted to control the temperature of the evaporator of the indoor unit to be maintained in the indoor condensation temperature range: detecting surface temperature T of copper pipe of indoor unit evaporatorInner partIf T isInner partIf the temperature is higher than 10 ℃, the working frequency of the compressor is increased; if TInner partKeeping the working frequency of the compressor unchanged at the temperature of less than or equal to 10 ℃.
The duration of the 1 st condensation on the surface of the indoor unit evaporator is 15 min.
(2) Entering a first frosting stage of the indoor unit of the air conditioner, turning off the fan of the indoor unit or adjusting the rotating speed of the fan of the indoor unit to a frosting preset rotating speed and/or adjusting the working frequency of a compressor, and controlling the temperature of a copper pipe on the surface of an evaporator to be less than or equal to a preset frosting control temperature TFrost controlSo that the surface of the evaporator of the indoor unit frosts for the 1 st time.
Setting frosting control temperature TFrost controlIs-5 ℃.
The indoor fan runs at a frosting preset rotating speed, namely at the lowest rotating speed, or the indoor fan is turned off (the fan is turned off when the temperature does not meet the requirement at the lowest wind speed);
detecting the surface temperature T of a copper pipe of an evaporator of the indoor unit, and increasing the working frequency of the compressor if the temperature T is more than-5 ℃; if T is less than or equal to-5 ℃, the working frequency of the compressor is kept unchanged.
The duration of the 1 st frosting on the surface of the evaporator of the indoor unit is 15 min.
(3) Judging whether the total surface frosting time of the indoor unit evaporator is greater than or equal to the preset frosting time, if so, entering the indoor unit evaporator surface defrosting and drying stage; if not, condensation and frosting on the surface of the indoor unit evaporator are carried out next time. Wherein the preset frosting time is 25 min.
And detecting that the total frosting time of the surface of the evaporator of the indoor unit is 15min less than the preset frosting time of 25min, and entering a second dewing and frosting stage.
(4) Entering a second condensation stage of the indoor unit of the air conditioner, adjusting the rotating speed of a fan of the indoor unit to a preset condensation rotating speed, adjusting the working frequency of a compressor or the opening degree of an electronic expansion valve, and controlling the temperature of a copper pipe on the surface of an evaporator to be less than or equal to a preset condensation control temperature TDew controlSo that the 2 nd condensation on the surface of the indoor unit evaporator is formed.
Setting the dew control temperature TDew controlIs 0 ℃.
The indoor unit fan is operated at a predetermined dew condensation rotation speed, i.e., at a second low rotation speed (in order to ensure sufficient air flow across the evaporator surface);
detecting the surface temperature T of a copper pipe of an evaporator of the indoor unit, and if the T is more than 0 ℃, increasing the working frequency of the compressor or increasing the opening of the electronic expansion valve (if the working frequency of the compressor is increased to the highest frequency, the temperature does not meet the requirement, increasing the opening of the expansion valve); if T is less than or equal to 0 ℃, the working frequency of the compressor and the opening of the electronic expansion valve are maintained unchanged.
The duration of the 2 nd condensation on the surface of the indoor unit evaporator is 5 min.
(5) Entering a second frosting stage of the indoor unit of the air conditioner, turning off the fan of the indoor unit or adjusting the rotating speed of the fan of the indoor unit to be a frosting preset rotating speed and/or adjusting the working frequency of a compressor, and controllingThe temperature of the copper pipe on the surface of the evaporator is less than or equal to the preset frosting control temperature TFrost controlSo that the surface of the evaporator of the indoor unit is frosted for the 2 nd time.
Setting frosting control temperature TFrost controlIs-5 ℃.
The indoor fan runs at a frosting preset rotating speed, namely at the lowest rotating speed, or the indoor fan is turned off (the fan is turned off when the temperature does not meet the requirement at the lowest wind speed);
detecting the surface temperature T of a copper pipe of an evaporator of the indoor unit, and increasing the working frequency of the compressor if the temperature T is more than-5 ℃; if T is less than or equal to-5 ℃, the working frequency of the compressor is kept unchanged.
The duration of the 2 nd frosting on the surface of the evaporator of the indoor unit is 5 min.
(6) Judging whether the total surface frosting time of the indoor unit evaporator is greater than or equal to the preset frosting time, if so, entering the indoor unit evaporator surface defrosting and drying stage; if not, condensation and frosting on the surface of the indoor unit evaporator are carried out next time. Wherein the preset frosting time is 25 min.
And detecting that the total frosting time of the surface of the evaporator of the indoor unit is 20min less than the preset frosting time of 25min, and entering a third dewing and frosting stage.
(7) Entering a third condensation stage of the indoor unit of the air conditioner, adjusting the rotating speed of a fan of the indoor unit to a predetermined condensation rotating speed, adjusting the working frequency of a compressor or the opening degree of an electronic expansion valve, and controlling the temperature of a copper pipe on the surface of an evaporator to be less than or equal to a preset condensation control temperature TDew controlSo that the 3 rd condensation on the surface of the indoor unit evaporator is formed.
Setting the dew control temperature TDew controlIs 0 ℃.
The indoor unit fan is operated at a predetermined dew condensation rotation speed, i.e., at a second low rotation speed (in order to ensure sufficient air flow across the evaporator surface);
detecting the surface temperature T of a copper pipe of an evaporator of the indoor unit, and if the T is more than 0 ℃, increasing the working frequency of the compressor or increasing the opening of the electronic expansion valve (if the working frequency of the compressor is increased to the highest frequency, the temperature does not meet the requirement, increasing the opening of the expansion valve); if T is less than or equal to 0 ℃, the working frequency of the compressor and the opening of the electronic expansion valve are maintained unchanged.
The duration of the 3 rd condensation on the surface of the indoor unit evaporator is 5 min.
(8) Entering a third frosting stage of the indoor unit of the air conditioner, turning off the fan of the indoor unit or adjusting the rotating speed of the fan of the indoor unit to a frosting preset rotating speed and/or adjusting the working frequency of a compressor, and controlling the temperature of a copper pipe on the surface of an evaporator to be less than or equal to a preset frosting control temperature TFrost controlSo that the surface of the evaporator of the indoor unit is frosted for the 3 rd time.
Setting frosting control temperature TFrost controlIs-5 ℃.
The indoor fan runs at a frosting preset rotating speed, namely at the lowest rotating speed, or the indoor fan is turned off (the fan is turned off when the temperature does not meet the requirement at the lowest wind speed);
detecting the surface temperature T of a copper pipe of an evaporator of the indoor unit, and increasing the working frequency of the compressor if the temperature T is more than-5 ℃; if T is less than or equal to-5 ℃, the working frequency of the compressor is kept unchanged.
The duration of the 3 rd frosting on the surface of the evaporator of the indoor unit is 5 min.
(9) Judging whether the total surface frosting time of the indoor unit evaporator is greater than or equal to the preset frosting time, if so, entering the indoor unit evaporator surface defrosting and drying stage; if not, condensation and frosting on the surface of the indoor unit evaporator are carried out next time. Wherein the preset frosting time is 25 min.
And (4) detecting that the total frosting time of the surface of the evaporator of the indoor unit is 25min and is equal to the preset frosting time of 25min, and entering a defrosting and drying stage of the evaporator of the indoor unit.
(10) Entering a defrosting and drying stage of the indoor unit evaporator, stopping the compressor, and adjusting the rotating speed of a fan of the indoor unit to defrost and dry the surface of the indoor unit evaporator; setting target temperature T of surface of copper pipe of evaporator of indoor unit in defrosting and drying stages of evaporator of indoor unitTransformingIt was 65 ℃.
Stopping the compressor, detecting the surface temperature T of the copper pipe of the evaporator of the indoor unit, and increasing the temperature of the fan of the indoor unit if the temperature T is more than 67 DEG CA rotational speed; if T is less than or equal to 63 ℃, reducing the rotating speed of the fan of the indoor unit, and if T is less than 63 ℃Inner partAnd when the temperature is less than or equal to 67 ℃, keeping the rotating speed of the fan of the indoor unit unchanged.
Meanwhile, detecting the rotating speed R of the indoor unit fan, and if R is larger than or equal to RHeat generationIf so, the electric auxiliary heating function is started; if R < RHeat generation50RPM, the electric auxiliary heating function is turned off; if R isHeat generation-50RPM＜R≤RHeat generationIf so, maintaining the current state of the electric auxiliary heating function; wherein R isHeat generationThe lowest rotating speed for starting the electric auxiliary heating function preset in the defrosting and drying stages of the evaporator of the indoor unit is achieved. Set RHeat generationThe rotating speed of the indoor unit fan corresponding to the preset middle wind speed is set for the indoor unit fan.
Through the process, the air conditioner in the embodiment can realize self-cleaning of the indoor unit.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (16)

1. A method of self-cleaning an evaporator to increase the thickness of a frost layer, the method comprising:
adjusting the rotating speed of a fan of the indoor unit and/or the working frequency of a compressor to enable the surface of an evaporator of the indoor unit to be subjected to condensation for the first time;
turning off the indoor unit fan or adjusting the rotation speed of the indoor unit fan to a preset frosting rotation speed and/or adjusting the working frequency of the compressor, and controlling the temperature of the copper pipe on the surface of the evaporator to be less than or equal to a preset frosting control temperature TFrost controlFrosting the surface of the evaporator of the indoor unit for the mth time, wherein m is an integer more than or equal to 1;
adjusting the rotation speed of the indoor unit fan to a predetermined dew condensation rotation speed, and adjusting the working frequency or electronic expansion of the compressorThe opening degree of the valve controls the temperature of the copper pipe on the surface of the evaporator to be less than or equal to the preset dewing control temperature TDew controlEnabling the surface of the indoor unit evaporator to be subjected to condensation for the nth time, wherein n is an integer greater than or equal to 2;
the condensation and frosting processes are alternately carried out for a plurality of times;
and stopping the compressor, and adjusting the rotating speed of a fan of the indoor unit to defrost and dry the surface of the evaporator of the indoor unit.
2. The method of claim 1, further comprising:
judging whether the total surface frosting time of the indoor unit evaporator is greater than or equal to the preset frosting time, if so, entering the indoor unit evaporator surface defrosting and drying stage; if not, condensation and frosting on the surface of the indoor unit evaporator are carried out next time.
3. The method of claim 1, wherein the adjusting the speed of the indoor unit blower and/or the operating frequency of the compressor to cause condensation on the indoor unit evaporator surface for the first time comprises:
acquiring the current indoor environment temperature and the current indoor environment humidity of the indoor unit, and determining the indoor condensation temperature range of condensation on the surface of an evaporator of the indoor unit;
and the rotating speed of the fan of the indoor unit is reduced, and the temperature of the evaporator of the indoor unit is controlled by adjusting the working frequency of the compressor so as to maintain the temperature within the indoor condensation temperature range.
4. The method for self-cleaning an evaporator capable of increasing the thickness of a frost layer according to claim 3, wherein the step of obtaining the current indoor environment temperature and the current indoor environment humidity of the indoor unit and determining the indoor condensation temperature range of condensation on the surface of the evaporator of the indoor unit comprises the following steps:
determining the indoor dew point temperature T under the current environment according to the current indoor environment temperature and the current indoor environment humidity0；
The indoor condensation temperature range is T1≤T0-TRepair the，
Wherein, TRepair theThe temperature is the corrected temperature of the condensation stage of the indoor unit evaporator.
5. Method for self-cleaning evaporators with increased frost thickness according to claim 4, characterized in that the corrected temperature T of the condensation phase of the indoor evaporatorRepair theThe temperature was 8 ℃.
6. The method of claim 3, wherein the reducing the speed of the indoor unit fan controls the temperature of the indoor unit evaporator to maintain the indoor condensation temperature range by adjusting the operating frequency of the compressor, comprising:
the indoor unit fan runs at a preset low wind speed;
detecting the surface temperature T of the copper pipe of the evaporator of the indoor unit, if T is more than T0-TRepair theIncreasing the working frequency of the compressor; if T is less than or equal to T0-TRepair theThe operating frequency of the compressor is maintained.
7. The method as claimed in claim 1, wherein the fan of the indoor unit is turned off or the fan of the indoor unit is controlled to a predetermined frosting speed and/or the working frequency of the compressor is adjusted, and the temperature of the copper tube on the surface of the evaporator is controlled to be less than or equal to a predetermined frosting control temperature TFrost controlSo that the surface of the evaporator of the indoor unit frosts for the mth time, wherein m is an integer more than or equal to 1, and the method comprises the following steps:
the indoor fan runs at a frosting preset rotating speed or is turned off;
detecting the surface temperature T of the copper pipe of the evaporator of the indoor unit, if T is more than TFrost controlIncreasing the working frequency of the compressor; if T is less than or equal to TFrost controlThe operating frequency of the compressor is maintained.
8.The self-cleaning method of evaporator with increased frost thickness as claimed in claim 1, wherein the rotation speed of indoor unit blower is adjusted to a predetermined dew condensation rotation speed, the operating frequency of compressor or the opening of electronic expansion valve is adjusted, and the temperature of copper tube on the surface of evaporator is controlled to be less than or equal to a predetermined dew condensation control temperature TDew controlThe method for enabling the surface of the evaporator of the indoor unit to have condensation for the nth time, wherein n is an integer greater than or equal to 2, and comprises the following steps:
the indoor unit fan operates at a dew condensation preset rotating speed;
detecting the surface temperature T of the copper pipe of the evaporator of the indoor unit, if T is more than TDew controlIncreasing the working frequency of the compressor or increasing the opening of the electronic expansion valve; if T is less than or equal to TDew controlAnd maintaining the working frequency of the compressor and the opening of the electronic expansion valve unchanged.
9. The method of claim 1, wherein the compressor is stopped, and the speed of the indoor fan is adjusted to defrost and dry the surface of the indoor evaporator, comprising:
stopping the compressor, detecting the surface temperature T of the copper pipe of the evaporator of the indoor unit, and if T is more than TTransformingIf the temperature is +2 ℃, increasing the rotating speed of the fan of the indoor unit; if T is less than or equal to TTransformingReducing the rotating speed of the fan of the indoor unit at the temperature of minus 2 ℃; if TTransforming-2℃＜TInner part≤TTransformingAt +2 ℃, keeping the rotating speed of the fan of the indoor unit unchanged;
wherein, TTransformingAnd the target temperature of the surface of the copper pipe of the evaporator of the indoor unit is preset for the defrosting and drying stages of the evaporator of the indoor unit.
10. The method of claim 9, wherein the target temperature T of the surface of the copper tube of the evaporator is a target temperature T of the evaporator during defrosting and drying phase of the evaporatorTransformingIs 50-65 ℃.
11. The method of claim 1, wherein the compressor is stopped, the speed of the indoor fan is adjusted to defrost and dry the surface of the indoor evaporator, and further comprising:
detecting the rotating speed R of the indoor unit fan, if R is more than or equal to RHeat generationIf so, the electric auxiliary heating function is started; if R < RHeat generation50RPM, the electric auxiliary heating function is turned off; if R isHeat generation-50RPM＜R≤RHeat generationIf so, maintaining the current state of the electric auxiliary heating function;
wherein R isHeat generationThe lowest rotating speed for starting the electric auxiliary heating function preset in the defrosting and drying stages of the evaporator of the indoor unit is achieved.
12. The method as claimed in claim 11, wherein the minimum speed R of the evaporator is set to a minimum speed for turning on the auxiliary heating function during defrosting and drying of the indoor unitHeat generationThe rotating speed of the indoor unit fan corresponding to the preset middle wind speed is set for the indoor unit fan.
13. The method of claim 1, wherein the predetermined dew formation speed is the second lowest speed, and the predetermined frost formation speeds are the lowest speeds.
14. The method of claim 1, wherein the dewing control temperature is 0 ℃ and the frosting control temperature is-5 ℃.
15. The method of claim 1, wherein the duration of the first condensation and the nth condensation on the surface of the indoor unit evaporator is 5min to 15min, the duration of the mth frost on the surface of the indoor unit evaporator is 5min to 15min, m is an integer greater than or equal to 1, and n is an integer greater than or equal to 2.
16. An air conditioner, characterized in that it is capable of performing the method of self-cleaning an evaporator for increasing the thickness of a frost layer according to any one of claims 1 to 15.
CN201811215529.XA 2018-11-22 2018-11-22 Evaporator self-cleaning method for increasing frost layer thickness and air conditioner Active CN109373504B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201811215529.XA CN109373504B (en) 2018-11-22 2018-11-22 Evaporator self-cleaning method for increasing frost layer thickness and air conditioner
JP2019187243A JP6936291B2 (en) 2018-11-22 2019-10-11 Evaporator self-cleaning method and air conditioner that can increase the frost layer thickness

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811215529.XA CN109373504B (en) 2018-11-22 2018-11-22 Evaporator self-cleaning method for increasing frost layer thickness and air conditioner

Publications (2)

Publication Number Publication Date
CN109373504A CN109373504A (en) 2019-02-22
CN109373504B true CN109373504B (en) 2020-01-17

Family

ID=65400925

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201811215529.XA Active CN109373504B (en) 2018-11-22 2018-11-22 Evaporator self-cleaning method for increasing frost layer thickness and air conditioner

Country Status (2)

Country Link
JP (1) JP6936291B2 (en)
CN (1) CN109373504B (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109916006B (en) * 2019-03-21 2021-01-29 青岛海尔空调器有限总公司 Self-cleaning humidification control method for air conditioner
CN109916008B (en) * 2019-03-21 2021-01-29 青岛海尔空调器有限总公司 Self-cleaning humidification control method for air conditioner
CN109916007B (en) * 2019-03-21 2021-01-29 青岛海尔空调器有限总公司 Self-cleaning humidification control method for air conditioner
CN109916031B (en) * 2019-03-21 2021-01-29 青岛海尔空调器有限总公司 Self-cleaning humidification control method for air conditioner
CN109916005B (en) * 2019-03-21 2021-04-20 青岛海尔空调器有限总公司 Self-cleaning humidification control method for air conditioner
CN109916039B (en) * 2019-03-21 2021-01-29 青岛海尔空调器有限总公司 Self-cleaning humidification control method for air conditioner
CN110173827A (en) * 2019-05-29 2019-08-27 广东美的制冷设备有限公司 Air conditioner and its automatically cleaning control method and computer readable storage medium
CN110500803A (en) * 2019-07-30 2019-11-26 龙川纽恩泰新能源科技发展有限公司 A kind of air source heat pump and its automatically cleaning control system
CN110500701A (en) * 2019-08-23 2019-11-26 珠海格力电器股份有限公司 A kind of self cleaning method, device, storage medium and air-conditioning
CN110736196B (en) * 2019-09-30 2021-10-29 青岛海尔空调器有限总公司 Control method and device for self-cleaning of air conditioner and air conditioner
CN110736195B (en) * 2019-09-30 2021-11-23 青岛海尔空调器有限总公司 Air conditioner self-cleaning control method and device and air conditioner
CN111121257B (en) * 2020-01-06 2022-02-22 北京小米移动软件有限公司 Air conditioner self-cleaning method, device, equipment and storage medium
CN113137669A (en) * 2020-01-16 2021-07-20 日立江森自控空调有限公司 Refrigeration cycle system, window type air conditioner and method for operating window type air conditioner
CN111380175A (en) * 2020-03-27 2020-07-07 广东美的制冷设备有限公司 Air conditioner control method, air conditioner and storage medium
CN113623813A (en) * 2020-05-06 2021-11-09 青岛海尔空调电子有限公司 Self-cleaning control method for air conditioning unit
CN112229115A (en) * 2020-09-17 2021-01-15 武汉格罗夫氢能汽车有限公司 Anti-frosting control method and system for fuel cell hydrogen energy automobile air conditioning system
CN114484616A (en) * 2020-11-11 2022-05-13 广东美的制冷设备有限公司 Air conditioner, self-cleaning method thereof, self-cleaning device and readable storage medium
CN114543254B (en) * 2020-11-24 2023-11-28 广东美的制冷设备有限公司 Self-cleaning control method of air conditioner, air conditioner and storage medium
CN112594886B (en) * 2020-12-15 2022-10-28 青岛海尔空调器有限总公司 Air conditioner self-cleaning control method and air conditioner self-cleaning control system
CN112665103B (en) * 2021-01-18 2022-12-23 青岛海尔空调器有限总公司 Self-cleaning control method of air conditioner and air conditioner
CN112902376B (en) * 2021-02-08 2022-04-15 珠海格力电器股份有限公司 Dust removal device, air conditioner and dust removal method
CN113357750A (en) * 2021-05-17 2021-09-07 青岛海尔空调器有限总公司 Intelligent self-treatment method and device for air conditioner, electronic equipment and storage medium
CN113280487B (en) * 2021-05-31 2022-09-16 广东美的制冷设备有限公司 Self-cleaning control method and device of air conditioner and computer readable storage medium
CN113719970A (en) * 2021-08-05 2021-11-30 Tcl空调器(中山)有限公司 Air conditioner, self-cleaning method and device thereof, and computer readable storage medium
CN113803848A (en) * 2021-09-13 2021-12-17 珠海格力电器股份有限公司 Self-cleaning control method, device and equipment and air conditioning system
CN113959192B (en) * 2021-10-15 2023-03-31 青岛海尔空调电子有限公司 Method and device for self-cleaning of heat pump dryer, heat pump dryer and storage medium

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006038362A (en) * 2004-07-28 2006-02-09 Daikin Ind Ltd Freezing device
JP2006189183A (en) * 2005-01-05 2006-07-20 Matsushita Electric Ind Co Ltd Air conditioner
CN104764171B (en) * 2015-04-27 2017-10-27 珠海格力电器股份有限公司 Air conditioner and its control method and device
CN106322658A (en) * 2016-08-23 2017-01-11 广东美的制冷设备有限公司 Cleaning control method and device for heat exchanger of air conditioner
CN106225176B (en) * 2016-08-24 2019-05-31 青岛海尔空调器有限总公司 Operation of air conditioner control method
CN110500651B (en) * 2017-04-28 2022-11-08 日立江森自控空调有限公司 Air conditioner
JP6360593B1 (en) * 2017-05-26 2018-07-18 日立ジョンソンコントロールズ空調株式会社 Air conditioner
CN107166670B (en) * 2017-06-14 2019-12-06 青岛海尔空调器有限总公司 self-cleaning control method and device for air conditioner

Also Published As

Publication number Publication date
JP6936291B2 (en) 2021-09-15
JP2020085438A (en) 2020-06-04
CN109373504A (en) 2019-02-22

Similar Documents

Publication Publication Date Title
CN109373504B (en) Evaporator self-cleaning method for increasing frost layer thickness and air conditioner
JP6970147B2 (en) Self-cleaning method for air conditioner indoor unit / outdoor unit
CN106556106B (en) Control method and device for self-cleaning of indoor unit of air conditioner
CN110207314B (en) Air conditioner, air conditioner control method and device and readable storage medium
WO2018086175A1 (en) Method for cleaning indoor unit and outdoor unit of air conditioner
WO2018086176A1 (en) Self-cleaning method for heat exchanger of air conditioner
CN111356881B (en) Air conditioner and control method thereof
WO2019024681A1 (en) Control method and device for self-cleaning of air conditioner
CN105486164A (en) Cleaning control method for indoor heat exchanger of air conditioner and air conditioner
CN111043712A (en) Defrosting control method and system for heating mode of air conditioner and air conditioner
CN108375171B (en) Self-cleaning control method for air conditioner
CN111561761B (en) Control method for delaying frosting of air conditioning system
CN110081559A (en) A kind of air-conditioner defrosting control method and air conditioner
CN111442473A (en) Control method of air conditioner
CN109084444A (en) A kind of method and air-conditioning inhibiting condenser for outdoor unit of air conditioner frosting
CN110873417B (en) Air conditioner and self-cleaning control method thereof
CN110873415B (en) Air conditioner and self-cleaning control method thereof
CN110873402A (en) Air conditioner and self-cleaning control method thereof
CN109163417A (en) Air source heat pump system
CN109916058B (en) Self-cleaning control method for air conditioner
CN110094833A (en) A kind of booting Defrost method of convertible frequency air-conditioner
CN110873408B (en) Air conditioner and self-cleaning control method thereof
CN110873401A (en) Air conditioner and self-cleaning control method thereof
CN104633979B (en) Air-conditioner and its control method
CN113790513B (en) Self-cleaning method for air conditioner

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant