CN114110956B - Self-cleaning control method for air conditioner, air conditioner and computer storage medium - Google Patents

Self-cleaning control method for air conditioner, air conditioner and computer storage medium Download PDF

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CN114110956B
CN114110956B CN202111435191.0A CN202111435191A CN114110956B CN 114110956 B CN114110956 B CN 114110956B CN 202111435191 A CN202111435191 A CN 202111435191A CN 114110956 B CN114110956 B CN 114110956B
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self
temperature
controlling
air conditioner
cleaning
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CN114110956A (en
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王军
张素珍
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Hisense Air Conditioning Co Ltd
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Hisense Air Conditioning Co Ltd
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    • 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
    • F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
    • 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
    • F24F11/65—Electronic processing for selecting an operating mode
    • 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
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
    • F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
    • 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
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

Abstract

The invention discloses an air conditioner self-cleaning control method, an air conditioner and a computer storage medium, wherein the air conditioner self-cleaning control method comprises the following steps: acquiring indoor environment temperature and indoor environment relative humidity; obtaining a dew point temperature according to the indoor environment temperature and the indoor environment relative humidity; and controlling the air conditioner to operate in a condensed water self-cleaning mode or a frosting self-cleaning mode according to the dew point temperature. By adopting the method, the air conditioner can be efficiently self-cleaned, and the self-cleaning effect is improved.

Description

Self-cleaning control method for air conditioner, air conditioner and computer storage medium
Technical Field
The present invention relates to the field of air conditioners, and in particular, to a self-cleaning control method for an air conditioner, and a computer storage medium.
Background
With the health demands of people, many air conditioners have a self-cleaning function, and the evaporator frosting is controlled to be melted into water so as to wash out dust collected by the evaporator. Specifically, for indoor self-cleaning, the evaporator is full of frost by controlling the frosting or alternate frosting and condensation of the evaporator, and then the frost is quickly melted into water to wash out dust on the evaporator.
However, the self-cleaning function of the air conditioner is only realized by controlling the frosting or alternate frosting and condensation of the evaporator, and the optimal self-cleaning effect cannot be realized.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, an object of the present invention is to provide a self-cleaning control method for an air conditioner, by which efficient self-cleaning of the air conditioner can be achieved and self-cleaning effect can be improved.
Another object of the present invention is to provide an air conditioner.
It is still another object of the present invention to provide a computer storage medium.
In order to solve the above problems, an embodiment of a first aspect of the present invention provides a self-cleaning control method of an air conditioner, including: acquiring indoor environment temperature and indoor environment relative humidity; obtaining a dew point temperature according to the indoor environment temperature and the indoor environment relative humidity; and controlling the air conditioner to operate in a condensed water self-cleaning mode or a frosting self-cleaning mode according to the dew point temperature.
According to the self-cleaning control method for the air conditioner, the moisture content of indoor air is judged according to the dew point temperature, so that when the moisture content of the indoor air is high, the air conditioner is controlled to operate in a condensate self-cleaning mode, condensate water is formed on an indoor evaporator to achieve the purpose of self-cleaning, and when the moisture content of the indoor air is low, the air conditioner is controlled to operate in a frosting self-cleaning mode, the indoor evaporator frosts and melts into water to wash the dust to achieve the purpose of self-cleaning, and therefore, the optimal self-cleaning function is selected based on the dew point temperature, high-efficiency self-cleaning of the air conditioner can be achieved, and the self-cleaning effect of the air conditioner is improved.
In some embodiments, the controlling the air conditioner to operate in a condensate water self-cleaning mode or a frosting self-cleaning mode according to the dew point temperature includes: determining that the dew point temperature is greater than or equal to a first preset temperature, and controlling the air conditioner to operate in a condensate water self-cleaning mode; and determining that the dew point temperature is smaller than the first preset temperature, and controlling the air conditioner to operate in a frosting self-cleaning mode.
In some embodiments, controlling the air conditioner to operate in a condensate self-cleaning mode includes: controlling the air conditioner to operate in a refrigeration mode; controlling an indoor motor to run at a first preset rotating speed, controlling an indoor air deflector to move to an anti-direct blowing position, controlling a compressor to run at a first initial frequency, controlling the opening of an expansion valve to be a first preset opening, and controlling an outdoor motor to run at a second preset rotating speed; the time that the compressor runs at the first initial frequency reaches a first preset time, and the current evaporation temperature is obtained; and controlling at least one of the operating frequency of the compressor and the opening degree of the expansion valve according to the current evaporation temperature so that the current evaporation temperature is in a condensed water self-cleaning temperature range.
In some embodiments, the controlling at least one of the operating frequency of the compressor and the opening degree of the expansion valve according to the current evaporating temperature includes: if the current evaporation temperature is less than a second preset temperature, controlling the running frequency of the compressor to be reduced or controlling the opening degree of the expansion valve to be increased, wherein the second preset temperature is the lower limit value of the self-cleaning temperature range of the condensed water; if the current evaporation temperature is determined to be greater than a third preset temperature, controlling the running frequency of the compressor to rise, or controlling the opening degree of the expansion valve to be reduced, wherein the third preset temperature is the upper limit value of the self-cleaning temperature range of the condensed water; and if the current evaporation temperature is determined to be greater than or equal to the second preset temperature and less than or equal to the third preset temperature, controlling the running frequency of the compressor and the opening of the expansion valve to be unchanged.
In some embodiments, 1 ℃ to 5 ℃ of the second preset temperature, 3 ℃ to 8 ℃ of the third preset temperature.
In some embodiments, controlling the air conditioner to operate in a frosting self-cleaning mode comprises: controlling an air conditioner to operate in a refrigeration mode; controlling the indoor motor to stop running, controlling the indoor air deflector to move to an anti-direct blowing position, controlling the compressor to run at a second initial frequency, controlling the opening of the expansion valve to be a second preset opening, and controlling the outdoor motor to run at a third preset rotating speed; the time that the compressor runs at the second initial frequency reaches a second preset time, and the current evaporation temperature is obtained; and controlling at least one of the operating frequency of the compressor and the opening degree of the expansion valve according to the current evaporation temperature so that the current evaporation temperature is in a frosting self-cleaning temperature range.
In some embodiments, the controlling at least one of the operating frequency of the compressor and the opening degree of the expansion valve according to the current evaporating temperature includes: if the current evaporation temperature is less than a fourth preset temperature, controlling the running frequency of the compressor to be reduced or controlling the opening degree of the expansion valve to be increased, wherein the fourth preset temperature is the lower limit value of the frosting self-cleaning temperature range; if the current evaporation temperature is determined to be greater than a fifth preset temperature, controlling the running frequency of the compressor to rise, or controlling the opening degree of the expansion valve to be reduced, wherein the fifth preset temperature is the upper limit value of the frosting self-cleaning temperature range; and if the current evaporation temperature is determined to be greater than or equal to the fourth preset temperature and less than or equal to the fifth preset temperature, controlling the running frequency of the compressor and the opening of the expansion valve to be unchanged.
In some embodiments, -25 ℃ to-23 ℃ of the fourth preset temperature, and-23 ℃ to-15 ℃ of the fifth preset temperature.
An embodiment of a second aspect of the present invention provides an air conditioner, including: the temperature sensor is used for collecting indoor environment temperature; the humidity sensor is used for collecting the relative humidity of the indoor environment; at least one processor; a memory communicatively coupled to at least one of the processors; the storage is stored with a computer program which can be executed by at least one processor, and the self-cleaning control method of the air conditioner is realized when the at least one processor executes the computer program.
According to the air conditioner provided by the embodiment of the invention, the processor adopts the self-cleaning control method of the air conditioner, so that the air conditioner can be efficiently and automatically cleaned, and the self-cleaning effect is improved.
An embodiment of a third aspect of the present invention provides a computer storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the self-cleaning control method of an air conditioner described in the above embodiment.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
FIG. 1 is a flowchart of a self-cleaning control method of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a flow chart of a condensate self-cleaning mode in accordance with one embodiment of the present invention;
FIG. 3 is a flow chart of a frosting self-cleaning mode according to one embodiment of the present invention;
fig. 4 is a flowchart of a self-cleaning control method of an air conditioner according to another embodiment of the present invention;
Fig. 5 is a block diagram of an air conditioner according to an embodiment of the present invention.
Reference numerals:
an air conditioner 10;
a temperature sensor 1; a humidity sensor 2; a processor 3; and a memory 4.
Detailed Description
Embodiments of the present invention will be described in detail below, by way of example with reference to the accompanying drawings.
In the related art, for indoor self-cleaning, the evaporator is full of frost by controlling the frosting or alternate frosting and condensation of the evaporator, and then the frost is quickly melted into water to wash out dust on the evaporator.
However, for the self-cleaning function of the air conditioner, because the moisture content of the air is different, the time of the self-cleaning frosting stage is between 15min and 30min, but in the frosting process of the evaporator, the evaporation pressure is very low because the indoor motor is stopped, so that the refrigerant cannot be evaporated in the evaporator, a large amount of liquid refrigerant returns to the compressor liquid storage device, the risk of liquid impact of the compressor is easily caused, the risk of liquid impact is controllable in a short time, the risk gradually increases after a certain time, and the longer the time is, the greater the risk is. However, because the indoor and outdoor air temperatures are high in summer, the evaporator is not easy to frost, and in order to achieve the purpose of accumulating enough water for washing away dust at one time, the frosting process of the evaporator is usually controlled to be longer, the self-cleaning frosting process can be even more than 30 minutes, and the reliability of the compressor in self-cleaning is seriously reduced.
In order to solve the above problems, an embodiment of a first aspect of the present invention provides a self-cleaning control method for an air conditioner, by which efficient self-cleaning of the air conditioner can be achieved, and the self-cleaning effect of the air conditioner is improved.
The following describes a self-cleaning control method of an air conditioner according to an embodiment of the present invention with reference to fig. 1, and as shown in fig. 1, the method at least includes steps S1 to S3.
Step S1, acquiring indoor environment temperature and indoor environment relative humidity.
And S2, obtaining the dew point temperature according to the indoor environment temperature and the indoor environment relative humidity.
The dew point temperature refers to the temperature required by the water vapor in the air conditioner to be converted into liquid water in the current environment.
In an embodiment, the dew point temperature may be calculated by the following formula.
TL＝C1*Tin+C2*Rh/100-C3
Wherein TL is dew point temperature, tin is indoor environment temperature, rh is indoor environment relative humidity, C1 is temperature constant, C2 is humidity constant, and C3 is constant.
And step S3, controlling the air conditioner to operate in a condensate water self-cleaning mode or a frosting self-cleaning mode according to the dew point temperature.
The condensed water self-cleaning mode is a self-cleaning mode in which the air conditioner converts water vapor in indoor air into liquid water and washes an indoor evaporator with the liquid water; the frosting self-cleaning mode refers to a self-cleaning mode in which the evaporator is controlled to frost and melt the frost into water to flush the evaporator in the room.
In the embodiment, taking a certain type of indoor evaporator as an example, the indoor evaporator has a size of 62.2cm long by 29.4cm wide by 2.72cm thick, and the theoretical maximum frosting volume of the whole indoor evaporator is 0.0045m 3 And due to the fact that the density of frost on the fins of the indoor evaporator is about 100kg/m 3 Therefore, when the air conditioner operates in the frosting self-cleaning mode, after the indoor evaporator is full of frosting, the frosting is melted into waterThe theoretical maximum water amount of (2) is 0.46kg, however, the actual water amount per self-cleaning melting is between 0.15kg and 0.39kg, the average water amount is about 0.25kg under the influence of various factors such as indoor air state and frosting self-cleaning mode, and the theoretical maximum water amount of (0.46 kg) cannot be reached, that is, the water amount for flushing dust can be about 0.25kg when the air conditioner operates in the frosting self-cleaning mode for the indoor evaporator.
For the self-cleaning mode of the condensed water of the air conditioner, referring to the dehumidification gauges corresponding to different indoor environment temperatures and different indoor environment relative humidities shown in table 1, taking the indoor environment temperature of 20 ℃ and the indoor environment relative humidity of 75% as an example, when the evaporation temperature is controlled to be 2 ℃, the circulating air quantity is 200m 3 The dehumidifying amount per hour can reach 2.044kg, based on which, if the time of running the condensed water self-cleaning mode is 15min each time, the water amount generated by each self-cleaning is about 0.5kg, that is, for the same indoor evaporator, the water amount for flushing dust is about 0.5kg when the air conditioner runs the condensed water self-cleaning mode; taking the indoor environment temperature of 27 ℃ and the indoor environment relative humidity of 70% as an example, when the evaporation temperature is controlled to be 2 ℃, the circulating air quantity is 200m 3 The dehumidification per hour can reach 3.235kg, and based on this, if the time of running the condensate self-cleaning mode is 15min each time, the water yield per self-cleaning is about 0.8kg, that is, for the same indoor evaporator, the water yield of washing dust is about 0.8kg when the air conditioner runs the condensate self-cleaning mode. Therefore, when the indoor environment relative humidity Rh is higher, the self-cleaning effect of the air conditioner in the condensed water self-cleaning mode is obviously better than that of the air conditioner in the frosting self-cleaning mode.
Wherein, the relation formula of the dehumidification amount and the dew point temperature is G=K.V.T (TL-Te), wherein G is the dehumidification amount, K is a constant, V is the circulating air quantity, TL is the dew point temperature, te is the evaporation temperature.
TABLE 1
Figure BDA0003381365840000051
And, referring to table 1, the dehumidification amount is larger as the evaporation temperature is closer to zero. When the indoor environment temperature Tin is fixed, the higher the indoor environment relative humidity Rh, the higher the dew point temperature TL, and the higher the moisture content in the indoor air. When the evaporation temperature is lower than the dew point temperature TL, the dehumidification amount is larger than zero, and condensation water is generated in the air conditioner; when the evaporation temperature is higher than the dew point temperature TL, the dehumidification amount is 0, and condensation water is not generated in the air conditioner; while the lower the evaporation temperature, the greater the amount of dehumidification, when the dew point temperature TL is fixed. When the circulation air quantity is fixed, the larger the difference between the dew point temperature TL and the evaporation temperature is, the larger the dehumidification amount is.
Therefore, based on the above, the embodiment of the invention judges the moisture content of the indoor air by the dew point temperature, so that when the dew point temperature is higher, the moisture content of the indoor air is higher, and enough condensed water can be generated to remove dust and dirt on the surface of the indoor evaporator, therefore, the air conditioner is controlled to operate in a condensed water self-cleaning mode, so that water in unit air can be separated out, condensed water is formed on fins of the indoor evaporator, dust attached to the fins is continuously washed, the purpose of self-cleaning is effectively achieved, and compared with a frosting self-cleaning mode, the self-cleaning effect can be effectively improved; when the dew point temperature is lower, the moisture content of the indoor air is smaller, and enough condensed water cannot be generated to remove dust and dirt on the surface of the indoor evaporator, so that the air conditioner is controlled to operate in a frosting self-cleaning mode, and the self-cleaning function is realized through frosting and defrosting processes. Therefore, the optimal self-cleaning mode is selected based on the dew point temperature to complete the self-cleaning function of the air conditioner, so that the air conditioner can be efficiently self-cleaned, and the self-cleaning effect of the air conditioner can be improved.
It can be understood that referring to table 1, the higher the dew point temperature TL, the larger the amount of dehumidification, the higher the amount of condensation generated per unit time, and thus the better the cleaning effect upon self-cleaning.
According to the self-cleaning control method for the air conditioner, the moisture content of indoor air is judged according to the dew point temperature, so that when the moisture content of the indoor air is high, the air conditioner is controlled to operate in a condensate self-cleaning mode, condensate water is formed on an indoor evaporator to achieve the purpose of self-cleaning, and when the moisture content of the indoor air is low, the air conditioner is controlled to operate in a frosting self-cleaning mode, the indoor evaporator frosts and melts into water to wash the dust to achieve the purpose of self-cleaning, and therefore, the optimal self-cleaning function is selected based on the dew point temperature, high-efficiency self-cleaning of the air conditioner can be achieved, and the self-cleaning effect of the air conditioner is improved.
In some embodiments, when the dew point temperature TL is determined to be greater than or equal to the first preset temperature T1, it is indicated that the condensation water generated under the current moisture content of the indoor air can meet the water demand for cleaning the indoor evaporator, so that the air conditioner is controlled to operate in a condensation water self-cleaning mode, so as to achieve the purpose of self-cleaning, and the self-cleaning effect is improved; when the dew point temperature TL is determined to be smaller than the first preset temperature 1, the fact that the condensation water generated under the current moisture content of the indoor air cannot meet the water quantity requirement for cleaning the indoor evaporator is indicated, and therefore the air conditioner is controlled to operate in a frosting self-cleaning mode, and self-cleaning of the air conditioner is achieved.
The first preset temperature T1 may be preset according to practical situations, for example, as shown in table 1, in order to maximize the generation of the condensation water, the first preset temperature T1 is set to be equal to or greater than 10 ℃, so as to effectively ensure that when the dew point temperature is greater than the first preset temperature T1, a sufficient amount of condensation water can be generated to wash out dust, and ensure the cleaning effect. Preferably, the first preset temperature T1 is 14 ℃.
In some embodiments, controlling the air conditioner to operate in the condensed water self-cleaning mode includes: controlling an air conditioner to operate in a refrigeration mode; controlling an indoor motor to run at a first preset rotating speed, controlling an indoor air deflector to move to an anti-direct blowing position, controlling a compressor to run at a first initial frequency, controlling the opening of an expansion valve to be a first preset opening, and controlling an outdoor motor to run at a second preset rotating speed; the time that the compressor runs at the first initial frequency reaches a first preset time, and the current evaporating temperature Te is obtained; at least one of the operating frequency of the compressor and the opening degree of the expansion valve is controlled according to the current evaporating temperature Te so that the current evaporating temperature is in the condensed water self-cleaning temperature range. Through the process, the analysis amount of water in unit air can be effectively maximized, a large amount of condensed water is formed on the fins of the indoor evaporator, so that dust attached to the fins is continuously flushed, the self-cleaning function is achieved, meanwhile, the indoor air deflector is controlled to move to a direct blowing prevention position or to be positioned at a courtyard airflow position and kept unchanged, the problem of discomfort caused by direct blowing of cold air by users can be effectively avoided, and the user experience is improved.
The first preset rotating speed can be preset according to actual conditions such as a fan type and a condensed water self-cleaning temperature range, and is preferably a low gear. The first initial frequency may be preset according to practical conditions such as a compressor specification of an air conditioner and a condensed water self-cleaning temperature range. The first preset opening degree can be preset according to actual conditions such as the specification of an expansion valve configured by the air conditioner and the self-cleaning temperature range of the condensed water. The second preset rotational speed may be preset according to actual conditions such as a fan type and a condensed water self-cleaning temperature range.
In an embodiment, after the operation time of the compressor reaches the first preset time, the current evaporation temperature Te may be periodically detected, until the operation time of the compressor reaches the first preset cleaning time t3, and the condensate water self-cleaning mode is exited, so as to complete the self-cleaning process. The detection period of the current evaporation temperature Te may be set according to the actual situation, and is not limited thereto.
In the embodiment, the influence trend table of the compressor frequency, the indoor motor rotation speed, the outdoor motor rotation speed and the expansion valve opening change on the evaporation temperature and the condensation temperature is shown in the reference table 2.
TABLE 2
Figure BDA0003381365840000071
As can be seen from table 2, the operating frequency of the compressor or the opening of the expansion valve affects the change of the current evaporating temperature Te, so in the embodiment of the present invention, the adjustment of the current evaporating temperature Te can be effectively realized by controlling the operating frequency of the compressor or the opening of the expansion valve, so that the current evaporating temperature meets the temperature range of the self-cleaning requirement.
In some embodiments, when the current evaporation temperature Te is determined to be less than the second preset temperature T2, the current evaporation temperature is lower, and in order to avoid the situation that frosting occurs due to the fact that the current evaporation temperature is too low, the operation frequency of the compressor is controlled to be reduced, or the opening degree of the expansion valve is controlled to be increased so as to improve the current evaporation temperature Te, wherein the second preset temperature T2 is the lower limit value of the condensed water self-cleaning temperature range; when the current evaporating temperature Te is determined to be larger than the third preset temperature T3, the current evaporating temperature Te is higher, the running frequency of the compressor is controlled to be increased or the opening degree of the expansion valve is controlled to be reduced so as to reduce the current evaporating temperature Te in order to effectively convert water vapor in indoor air into liquid water, wherein the third preset temperature T3 is the upper limit value of the condensed water self-cleaning temperature range; when the current evaporating temperature Te is determined to be greater than or equal to the second preset temperature T2 and less than or equal to the third preset temperature T3, the current evaporating temperature Te is indicated to be capable of separating out water in indoor air and avoiding the problem of frosting, so that the running frequency of the compressor and the opening of the expansion valve are controlled to be unchanged, the current evaporating temperature Te is in a self-cleaning temperature range of condensed water, the requirement of maximizing the analysis amount of water in air is met, and the cleaning effect is ensured.
Specifically, referring to fig. 2, the control of the air conditioner to operate in the condensed water self-cleaning mode includes at least steps S4 to S8.
And S4, cleaning the condensed water.
Step S5, judging whether the current evaporating temperature Te is in the condensing water self-cleaning temperature range [ T2, T3]. If the temperature is within the self-cleaning temperature range of the condensed water, step S6 is executed.
And S6, controlling the operation frequency of the compressor and the opening degree of the expansion valve to be unchanged.
Step S7, controlling at least one of the reduction of the running frequency of the compressor and the increase of the opening degree of the expansion valve, wherein the current evaporating temperature Te is smaller than the lower limit value T2 of the condensed water self-cleaning temperature range.
Step S8, controlling at least one of the increase of the operation frequency of the compressor or the decrease of the opening degree of the expansion valve, wherein the current evaporation temperature Te is larger than the upper limit value T3 of the self-cleaning temperature range of the condensed water.
In some embodiments, for the second preset temperature and the third preset temperature, considering that the evaporation temperature is closer to zero, the dehumidification amount is larger, and in order to avoid the problem of frosting, the evaporation temperature needs to be greater than 0 ℃, in the embodiments of the present invention, the value ranges of the second preset temperature and the third preset temperature are respectively set as follows: 1 ℃ less than or equal to the second preset temperature less than or equal to 5 ℃ less than or equal to 3 ℃ less than or equal to 8 ℃ less than or equal to the third preset temperature, for example, the second preset temperature T2 can be 1 ℃ or 1.5 ℃ or 5 ℃, the third preset temperature T3 can be 3 ℃ or 3.5 ℃ or 8 ℃, preferably, the second preset temperature T2 is 1 ℃, and the third preset temperature T3 is 4 ℃. Therefore, the analysis amount of water in indoor air can be effectively maximized, the cleaning requirement on the indoor evaporator is met, and the cleaning effect is ensured.
For example, the preset relevant parameters in the air conditioner are respectively: the first preset time T1 is 3min, the first preset cleaning time T3 is 15min, the detection period T5 of the current evaporating temperature Te is 10s, the first preset temperature T1 is 14 ℃, the second preset temperature T2 is 1 ℃, the third preset temperature T3 is 4 ℃, the fixed evaporating temperature T0 is 10 ℃, the first preset rotating speed R1 (0) is 1 gear, the first initial frequency F1 (0) is 60Hz, the first preset opening EEV1 (0) is 250 steps, and the second preset rotating speed R1 (0) is 16 gears.
Based on the setting parameters of the air conditioner, a user starts an indoor self-cleaning function of the air conditioner, and the air conditioner executes a condensate water self-cleaning mode on the assumption that the detected indoor environment temperature Tin is 26 ℃ and the indoor environment relative humidity is 75%, and then the dew point temperature TL=21.3 ℃ is calculated and determined to be higher than the first preset temperature T1. In the mode, the indoor controller sends a refrigeration mode and a fixed evaporation temperature T0=10 ℃ to the outdoor controller, and controls the indoor motor to run in 1 gear and controls the indoor air deflector to move to a direct blowing prevention position; the outdoor unit executes a cooling mode, the compressor operates at a first initial frequency of F1 (0) =60 Hz, the opening EEV1 (0) =250 steps of the expansion valve, and the gear r1 (0) =16 of the outdoor motor. After the compressor is started, the current evaporating temperature starts from the initial indoor environment temperature Tin and is always reduced, after the compressor continuously operates for 3min, detecting that the current evaporating temperature Te=5 ℃ is higher than the third preset temperature of 4 ℃, controlling the operating frequency of the compressor to be increased by 2Hz on the basis that the first initial frequency is F1 (0), namely, the compressor operates at 62Hz, and after the operating time of the compressor reaches the detection period of 10s, detecting that the current evaporating temperature Te=2 ℃, and controlling the operating frequency of the compressor to be unchanged; after a plurality of detection periods, detecting the current evaporating temperature Te=0deg.C, and controlling the operating frequency of the compressor to be reduced by 2Hz on the basis of the current operating frequency, namely, the compressor is operated at 60 Hz; and (3) circulating until the running time t of the compressor is more than or equal to the first preset cleaning time 15min, and exiting the condensed water cleaning stage, thereby completing a condensed water self-cleaning mode and realizing self-cleaning of the air conditioner.
In some embodiments, controlling the air conditioner to operate in the frosting self-cleaning mode includes: controlling an air conditioner to operate in a refrigeration mode; controlling the indoor motor to stop running, controlling the indoor air deflector to move to an anti-direct blowing position, controlling the compressor to run at a second initial frequency, controlling the opening of the expansion valve to be a second preset opening, and controlling the outdoor motor to run at a third preset rotating speed; the time that the compressor runs at the second initial frequency reaches a second preset time, and the current evaporating temperature Te is obtained; at least one of an operating frequency of the compressor and an opening degree of the expansion valve is controlled according to the current evaporation temperature Te so that the current evaporation temperature Te is in a frosting self-cleaning temperature range. Through the process, the indoor evaporator can be frosted, so that the frosted indoor evaporator can be melted into water to continuously wash dust attached to the fins of the indoor evaporator to finish a self-cleaning function, and meanwhile, the indoor air deflector is controlled to move to a direct blowing prevention position or to be positioned at a courtyard airflow position to be unchanged, the problem of discomfort caused by direct blowing of cold air to a user can be effectively avoided, and the user experience is improved.
The third preset rotation speed can be preset according to actual conditions such as fan type and frosting self-cleaning temperature range. The second initial frequency may be preset according to practical conditions such as a compressor specification and a frosting self-cleaning temperature range of the air conditioner. The second preset opening degree can be preset according to actual conditions such as the specification of an expansion valve configured by the air conditioner and the frosting self-cleaning temperature range.
In an embodiment, after the running time of the compressor reaches the second preset time, the current evaporating temperature Te may be periodically detected until the running time of the compressor reaches the second preset cleaning time t4, and the frosting self-cleaning mode is exited, and the frosting stage is entered to complete the self-cleaning process. The detection period of the current evaporation temperature Te may be set according to the actual situation, and is not limited thereto.
In some embodiments, when the current evaporating temperature Te is determined to be smaller than the fourth preset temperature T4, it is indicated that the current evaporating temperature Te is too low, so that the suction pressure in the current air conditioner is lower than the limit of the minimum allowable suction pressure specified in the specification of the compressor, and therefore the operation frequency of the compressor is controlled to be reduced, or the opening degree of the expansion valve is controlled to be increased, so that the current evaporating temperature Te is improved, the situation that the suction pressure in the air conditioner is lower than the minimum allowable suction pressure requirement is avoided, and the reliability of the compressor is improved, wherein the fourth preset temperature T4 is the lower limit value of the frosting self-cleaning temperature range; when the current evaporating temperature Te is determined to be higher than the fifth preset temperature T5, the fact that the current evaporating temperature Te is too high cannot meet the requirement of quick frosting is indicated, so that the running frequency of the compressor is controlled to be increased, or the opening of the expansion valve is controlled to be reduced, the current evaporating temperature Te is reduced, and the effect of quick frosting is achieved, wherein the fifth preset temperature is the upper limit value of a frosting self-cleaning temperature range; when the current evaporating temperature Te is determined to be larger than or equal to the fourth preset temperature T4 and smaller than or equal to the fifth preset temperature T5, the current evaporating temperature Te can meet the reliability requirement of the compressor and can be frosted quickly, so that the running frequency of the compressor and the opening of the expansion valve are controlled to be unchanged, the current evaporating temperature Te is in a frosted self-cleaning temperature range, the purpose of achieving quick frosting while meeting the reliability requirement of the compressor is achieved, and the high-efficiency self-cleaning of the air conditioner is achieved.
Specifically, referring to fig. 3, controlling the air conditioner to operate in the frosting self-cleaning mode includes at least steps S9 to S13.
And S9, a frosting process.
Step S10, judging whether the current evaporating temperature Te is in the frosting self-cleaning temperature range [ T4, T5]. If the temperature is within the frosting self-cleaning temperature range, step S11 is executed.
Step S11, controlling the operation frequency of the compressor and the opening degree of the expansion valve to be unchanged.
Step S12, controlling at least one of the reduction of the operation frequency of the compressor or the increase of the opening degree of the expansion valve, wherein the current evaporation temperature Te is smaller than the lower limit value T4 of the frosting self-cleaning temperature range.
Step S13, controlling at least one of the increase of the operation frequency of the compressor or the decrease of the opening degree of the expansion valve, wherein the current evaporation temperature Te is larger than the upper limit value T5 of the frosting self-cleaning temperature range.
In some embodiments, regarding the fourth preset temperature and the fifth preset temperature, considering that the lower the evaporation temperature is, the faster the frost crystal is generated, and the limitation of the minimum allowable suction pressure specified in the compressor specification, the value ranges of the fourth preset temperature and the fifth preset temperature are respectively set as follows: -25 ℃ to less than or equal to the fourth preset temperature to less than or equal to-23 ℃, and-23 ℃ to less than or equal to the fifth preset temperature to less than or equal to-15 ℃, for example, the fourth preset temperature T4 can be-25 ℃ or-24.5 ℃ or-23 ℃, the fifth preset temperature T5 can be-23 ℃ or-15.5 ℃ or-15 ℃, preferably, the fourth preset temperature T4 is-24 ℃, and the fifth preset temperature is-20 ℃. Therefore, the indoor evaporator can be rapidly realized to maximize frost formation, and the reliability requirement of the compressor can be met.
For example, the preset relevant parameters in the air conditioner are respectively: the second preset time T2 is 5min, the second preset cleaning time T4 is 20min, the detection period T5 of the current evaporating temperature Te is 10s, the first preset temperature T1 is 14 ℃, the fourth preset temperature T4 is-24 ℃, the fifth preset temperature T5 is-20 ℃, the fixed evaporating temperature T0 is 10 ℃, the second initial frequency F2 (0) is 70Hz, the second preset opening EEV2 (0) is 200 steps, and the third preset rotating speed r2 (0) is 10 steps.
Based on the setting parameters of the air conditioner, a user starts an indoor self-cleaning function of the air conditioner, and the air conditioner executes a frosting self-cleaning mode on the assumption that the detected indoor environment temperature Tin is 20 ℃ and the indoor environment relative humidity is 45%, so as to calculate and determine the dew point temperature TL=7.6deg.C < a first preset temperature T1. In the mode, the indoor controller sends a refrigeration mode and a fixed evaporation temperature T0=10 ℃ to the outdoor controller, and controls the indoor motor to stop running and controls the indoor air deflector to move to a direct blowing prevention position; the outdoor unit executes the cooling mode, the compressor operates at the second initial frequency of F2 (0) =70 Hz, the opening EEV2 (0) =200 steps of the expansion valve, and the gear r2 (0) =10 steps of the outdoor motor. After the compressor is started, the current evaporating temperature starts from the initial indoor environment temperature Tin and is always reduced, after the compressor continuously operates for 5min, detecting that the current evaporating temperature Te= -18 ℃ is higher than the fifth preset temperature-20 ℃, controlling the operating frequency of the compressor to be increased by 2Hz on the basis that the first initial frequency is F1 (0), namely, the compressor operates at 72Hz, and after the operating time of the compressor reaches the detection period of 10s, detecting that the current evaporating temperature Te= -21 ℃, and controlling the operating frequency of the compressor to be kept unchanged at 72 Hz; after a plurality of detection periods, detecting the current evaporating temperature Te= -26 ℃, and controlling the operating frequency of the compressor to be reduced by 2Hz on the basis of the current operating frequency, namely, the compressor is operated at 70 Hz; and (3) circulating in the way until the running time t of the compressor is more than or equal to the second preset cleaning time for 20min, exiting the frosting stage, entering the frosting stage, and thus completing a frosting self-cleaning mode and realizing self-cleaning of the air conditioner.
The following describes an example of a self-cleaning control method of an air conditioner according to an embodiment of the present invention with reference to fig. 4, and the specific steps are as follows.
In step S14, the air conditioner performs a self-cleaning function in response to the self-cleaning instruction.
In step S15, the indoor environment temperature and the indoor environment relative humidity are acquired, and the dew point temperature TL is calculated.
In step S16, it is determined whether the dew point temperature TL is greater than or equal to the first preset temperature T1. If yes, go to step S17; if not, step S27 is performed.
Step S17, the air conditioner enters a condensate water self-cleaning mode.
Step S18, the rotating speed of the indoor motor is the first preset rotating speed R1 (0).
In step S19, the operation frequency of the compressor is the first initial frequency F1 (0).
Step S20, the rotation speed of the outdoor motor is the second preset rotation speed r1 (0).
Step S21, the indoor controller sends a fixed evaporation temperature T0 to the outdoor controller to effectively prevent the condition of triggering the freezing protection of the outdoor controller, and ensure that the self-cleaning process is effectively completed. The fixed evaporation temperature T0 may be set according to practical situations, for example, the fixed evaporation temperature T0 is 10 ℃.
Step S22, the expansion valve opening is a first preset opening EEV1 (0).
Step S23, judging whether the continuous running time t of the compressor reaches a first preset time t1min. If yes, go to step S24; if not, step S23 is performed.
And step S24, cleaning the condensed water.
Step S25, judging whether the time of the condensed water stage reaches a first preset cleaning time t3. If yes, go to step S26; if not, step S24 is performed. The first preset cleaning time is the duration of completing the self-cleaning process in a preset condensate water self-cleaning mode.
Step S26, the condensed water self-cleaning mode is ended.
Step S27, the air conditioner enters a frosting self-cleaning mode.
And step S28, stopping the indoor motor to reduce the temperature of the indoor evaporator and achieve the effect of rapid frosting.
In step S29, the operating frequency of the compressor is the second initial frequency F2 (0).
Step S30, the rotation speed of the outdoor motor is the third preset rotation speed r2 (0).
In step S31, the indoor controller transmits the fixed evaporation temperature T0 to the outdoor controller.
Step S32, the expansion valve opening is a second preset opening EEV2 (0).
Step S33, judging whether the continuous running time t of the compressor reaches a second preset time t2min. If yes, go to step S34; if not, step S33 is performed.
Step S34, frosting process.
Step S35, judging whether the time of the frosting stage reaches a second preset cleaning time t4. If yes, go to step S36; if not, step S34 is performed. The second preset cleaning time is the duration of completing the self-cleaning process in the preset frosting self-cleaning mode.
Step S36, the frosting self-cleaning mode is ended.
Wherein, when the operating frequency of the compressor is controlled to rise or fall, the range of the variation amplitude of the operating frequency of the compressor is [0.5Hz,20Hz ], for example, when the operating frequency of the compressor is controlled to rise, the amplitude of each rise of the operating frequency is 0.5Hz or 10Hz or 20Hz. And the range of the variation amplitude of the opening of the expansion valve is [1 step, 100 steps ] when the opening of the expansion valve is controlled to be increased or decreased, for example, the amplitude of each increase of the opening is 1 step, 10 steps, or 100 steps when the opening of the expansion valve is controlled to be increased.
In a word, according to the self-cleaning control method of the air conditioner, the self-cleaning indoor heat exchanger is realized by judging that the air conditioner executes frosting and defrosting processes through dew point temperature and combining with the reliability of a compressor, or the self-cleaning function is realized by executing high condensation water to directly wash the indoor heat exchanger, so that the self-cleaning function is realized in an optimal self-cleaning mode according with the current environment, the high-efficiency self-cleaning of the air conditioner is realized, and the self-cleaning effect of the air conditioner is improved.
The second aspect of the present invention provides an air conditioner, as shown in fig. 5, the air conditioner 10 includes a temperature sensor 1, a humidity sensor 2, at least one processor 3, and a memory 4 communicatively connected to the at least one processor 3.
The temperature sensor 1 is used for collecting indoor environment temperature; the humidity sensor 2 is used for collecting the indoor environment relative humidity; the memory 4 stores therein a computer program executable by the at least one processor 3, and the at least one processor 3 implements the self-cleaning control method of the air conditioner provided in the above embodiment when executing the computer program.
It should be noted that, the specific implementation manner of the air conditioner 10 according to the embodiment of the present invention is similar to the specific implementation manner of the self-cleaning control method of the air conditioner according to any of the embodiments of the present invention, and please refer to the description of the method section specifically, and in order to reduce redundancy, the description is omitted here.
According to the air conditioner 10 provided by the embodiment of the invention, the processor 3 adopts the self-cleaning control method of the air conditioner provided by the embodiment, so that the air conditioner can be efficiently and automatically cleaned, and the self-cleaning effect is improved.
An embodiment of a third aspect of the present invention provides a computer storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the self-cleaning control method of an air conditioner provided in the above embodiment.
In the description of this specification, any process or method description in a flowchart or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing logical functions or steps of the process, and in which the scope of the preferred embodiments of the present invention include additional implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.
Logic and/or steps represented in the flowcharts or otherwise described herein, e.g., a ordered listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. As with the other embodiments, if implemented in hardware, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
Those of ordinary skill in the art will appreciate that all or a portion of the steps carried out in the method of the above-described embodiments may be implemented by a program to instruct related hardware, where the program may be stored in a computer readable storage medium, and where the program, when executed, includes one or a combination of the steps of the method embodiments.
In addition, each functional unit in the embodiments of the present invention may be integrated in one processing module, or each unit may exist alone physically, or two or more units may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated modules may also be stored in a computer readable storage medium if implemented in the form of software functional modules and sold or used as a stand-alone product.
The above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, or the like. While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the invention, the scope of which is defined by the claims and their equivalents.

Claims (9)

1. The self-cleaning control method of the air conditioner is characterized by comprising the following steps of:
acquiring indoor environment temperature and indoor environment relative humidity;
obtaining a dew point temperature according to the indoor environment temperature and the indoor environment relative humidity;
controlling the air conditioner to operate in a condensed water self-cleaning mode or a frosting self-cleaning mode according to the dew point temperature, wherein the method comprises the following steps of:
determining that the dew point temperature is greater than or equal to a first preset temperature, and controlling the air conditioner to operate in a condensate water self-cleaning mode;
determining that the dew point temperature is smaller than the first preset temperature, and controlling the air conditioner to operate in a frosting self-cleaning mode;
when the air conditioner operates in a condensed water self-cleaning mode or a frosting self-cleaning mode, the indoor controller transmits a fixed evaporation temperature to the outdoor controller.
2. The self-cleaning control method of an air conditioner according to claim 1, wherein controlling the air conditioner to operate the condensed water self-cleaning mode includes:
controlling the air conditioner to operate in a refrigeration mode;
controlling an indoor motor to run at a first preset rotating speed, controlling an indoor air deflector to move to an anti-direct blowing position, controlling a compressor to run at a first initial frequency, controlling the opening of an expansion valve to be a first preset opening, and controlling an outdoor motor to run at a second preset rotating speed;
The time that the compressor runs at the first initial frequency reaches a first preset time, and the current evaporation temperature is obtained;
and controlling at least one of the operating frequency of the compressor and the opening degree of the expansion valve according to the current evaporation temperature so that the current evaporation temperature is in a condensed water self-cleaning temperature range.
3. The self-cleaning control method of an air conditioner according to claim 2, wherein said controlling at least one of an operation frequency of said compressor and an opening degree of said expansion valve according to said current evaporation temperature includes:
if the current evaporation temperature is less than a second preset temperature, controlling the running frequency of the compressor to be reduced or controlling the opening degree of the expansion valve to be increased, wherein the second preset temperature is the lower limit value of the self-cleaning temperature range of the condensed water;
if the current evaporation temperature is determined to be greater than a third preset temperature, controlling the running frequency of the compressor to rise, or controlling the opening degree of the expansion valve to be reduced, wherein the third preset temperature is the upper limit value of the self-cleaning temperature range of the condensed water;
and if the current evaporation temperature is determined to be greater than or equal to the second preset temperature and less than or equal to the third preset temperature, controlling the running frequency of the compressor and the opening of the expansion valve to be unchanged.
4. The self-cleaning control method of an air conditioner according to claim 3, wherein 1 ℃ is equal to or less than 5 ℃ for the second preset temperature and 3 ℃ is equal to or less than 8 ℃ for the third preset temperature.
5. The self-cleaning control method of an air conditioner according to claim 1, wherein controlling the air conditioner to operate in a frosting self-cleaning mode comprises:
controlling an air conditioner to operate in a refrigeration mode;
controlling the indoor motor to stop running, controlling the indoor air deflector to move to an anti-direct blowing position, controlling the compressor to run at a second initial frequency, controlling the opening of the expansion valve to be a second preset opening, and controlling the outdoor motor to run at a third preset rotating speed;
the time that the compressor runs at the second initial frequency reaches a second preset time, and the current evaporation temperature is obtained;
and controlling at least one of the operating frequency of the compressor and the opening degree of the expansion valve according to the current evaporation temperature so that the current evaporation temperature is in a frosting self-cleaning temperature range.
6. The self-cleaning control method of an air conditioner according to claim 5, wherein said controlling at least one of an operation frequency of said compressor and an opening degree of said expansion valve according to said current evaporation temperature comprises:
If the current evaporation temperature is less than a fourth preset temperature, controlling the running frequency of the compressor to be reduced or controlling the opening degree of the expansion valve to be increased, wherein the fourth preset temperature is the lower limit value of the frosting self-cleaning temperature range;
if the current evaporation temperature is determined to be greater than a fifth preset temperature, controlling the running frequency of the compressor to rise, or controlling the opening degree of the expansion valve to be reduced, wherein the fifth preset temperature is the upper limit value of the frosting self-cleaning temperature range;
and if the current evaporation temperature is determined to be greater than or equal to the fourth preset temperature and less than or equal to the fifth preset temperature, controlling the running frequency of the compressor and the opening of the expansion valve to be unchanged.
7. The self-cleaning control method of an air conditioner according to claim 6, wherein-25 ℃ is not more than-23 ℃ and-23 ℃ is not more than-15 ℃ and the fifth preset temperature is not more than-23 ℃.
8. An air conditioner, comprising:
the temperature sensor is used for collecting indoor environment temperature;
the humidity sensor is used for collecting the relative humidity of the indoor environment;
at least one processor;
a memory communicatively coupled to at least one of the processors;
Wherein the memory stores therein a computer program executable by at least one of the processors, the at least one of the processors implementing the self-cleaning control method of an air conditioner according to any one of claims 1 to 7 when executing the computer program.
9. A computer storage medium having stored thereon a computer program, which when executed by a processor implements the self-cleaning control method of an air conditioner according to any one of claims 1-7.
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