CN114251807A - Self-cleaning control method of air conditioner, air conditioner and computer readable storage medium - Google Patents
Self-cleaning control method of air conditioner, air conditioner and computer readable storage medium Download PDFInfo
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- CN114251807A CN114251807A CN202111456173.0A CN202111456173A CN114251807A CN 114251807 A CN114251807 A CN 114251807A CN 202111456173 A CN202111456173 A CN 202111456173A CN 114251807 A CN114251807 A CN 114251807A
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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
- F24F11/62—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
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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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/14—Heat exchangers specially adapted for separate outdoor units
- F24F1/16—Arrangement or mounting thereof
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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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
- F24F11/62—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
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
- F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
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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
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
- F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
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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
- F24F11/89—Arrangement or mounting of control or safety devices
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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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
- F24F2110/00—Control inputs relating to air properties
- F24F2110/20—Humidity
- F24F2110/22—Humidity of the outside air
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- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Fluid Mechanics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to the technical field of air conditioners, and discloses a self-cleaning control method of an air conditioner, the air conditioner and a computer readable storage medium, wherein at least two outdoor heat exchangers are arranged in parallel, the heat exchange efficiency of an outdoor unit is not influenced, when the outdoor temperature is higher or the relative humidity is lower, namely the frosting condition is worse, the air conditioner is controlled to carry out a split self-cleaning mode, partial outdoor heat exchangers can be sequentially controlled to be frosted first, so that the frosting difficulty is reduced, the requirement on the refrigeration cold quantity of the air conditioner is lower, and only the defrosting condition of the partial outdoor heat exchangers needs to be met, so that each outdoor heat exchanger is fully frosted and defrosted, and the self-cleaning effect of the outdoor unit is optimized; when the frosting condition is better, the air conditioner is controlled to carry out an integral self-cleaning mode, and the self-cleaning efficiency is improved.
Description
Technical Field
The present invention relates to the field of air conditioning technologies, and in particular, to a self-cleaning control method for an air conditioner, and a computer-readable storage medium.
Background
After the air conditioner is placed or used for a long time, a large amount of dust and dirt can be accumulated outside the air conditioner. The dust and dirt is attached to the outdoor heat exchanger of the outdoor unit, and the heat exchange performance of the outdoor heat exchanger is reduced, so that the performance of the air conditioner is reduced, and the energy consumption is improved.
At present, an outdoor unit is generally cleaned by a self-cleaning technology, specifically, an outdoor fan is kept closed when an air conditioner operates in a heating mode, so that the whole outdoor heat exchanger of the outdoor unit is frosted, and then the frost is melted into water to automatically clean the whole outdoor heat exchanger of the outdoor unit. The existing self-cleaning mode is to automatically clean the whole outdoor heat exchanger of the outdoor unit, when the outdoor temperature is higher or the relative humidity is lower, the whole outdoor heat exchanger of the outdoor unit cannot be frosted due to the cold energy generated by the air conditioner due to the overlarge whole outdoor heat exchanger, and the self-cleaning effect is poor.
Disclosure of Invention
The invention aims to provide a self-cleaning control method of an air conditioner, the air conditioner and a computer readable storage medium, which can sequentially perform frosting self-cleaning on a plurality of outdoor heat exchangers connected in parallel according to a use scene, and optimize the self-cleaning effect.
In order to achieve the above object, the present invention provides a self-cleaning control method for an air conditioner, the air conditioner includes an indoor unit heat exchange assembly, a refrigerant flow direction switching device, a compressor and an outdoor unit heat exchange assembly which are sequentially connected in series, the outdoor unit heat exchange assembly includes at least two outdoor heat exchangers, the two outdoor heat exchangers are arranged in parallel, an electromagnetic two-way valve is connected to an upstream side of each outdoor heat exchanger, and the self-cleaning control method includes the following steps:
receiving a trigger signal for starting a self-cleaning function of the air conditioner;
acquiring an outdoor relative humidity value and an outdoor temperature value;
judging to carry out a split self-cleaning mode or an integral self-cleaning mode according to the outdoor relative humidity value and the outdoor temperature value;
when the split self-cleaning mode is carried out, controlling part of the outdoor heat exchanger to frost and defrosting;
and when the integral self-cleaning mode is carried out, controlling all the outdoor heat exchangers to frost and defrosting.
In some embodiments of the present application, the step of determining from the outdoor relative humidity value and the outdoor temperature value comprises:
and if the outdoor relative humidity value is not less than the preset humidity value and the outdoor temperature value is not more than the preset temperature value, carrying out the integral self-cleaning mode.
In some embodiments of the present application, the preset humidity value is 50% to 70%.
In some embodiments of the present application, the preset temperature value is 20-40 ℃.
In some embodiments of the present application, the split self-cleaning mode includes the steps of:
controlling the opening of a part of electromagnetic two-way valves and controlling the closing of other electromagnetic two-way valves;
adjusting the refrigerant flow direction switching device to a state that the compressor provides compressed refrigerant for the indoor unit heat exchange assembly, so that the outdoor heat exchanger corresponding to the electromagnetic two-way valve is frosted until a defrosting condition is met;
controlling the part of the electromagnetic two-way valve to be closed;
and repeating the steps until all the outdoor heat exchangers meet the defrosting condition, and controlling the refrigerant flow direction to be reversed when the refrigerant flows to the switching device so as to defrost all the outdoor heat exchangers.
In some embodiments of the present application, the integral self-cleaning mode comprises the steps of:
controlling all the two-way electromagnetic valves to be opened;
adjusting the refrigerant flow direction switching device to a state that the compressor provides compressed refrigerant for the indoor unit heat exchange assembly, so that all the outdoor heat exchangers are frosted until a defrosting condition is met;
and controlling the flow direction of the refrigerant to be reversed when the flow direction of the refrigerant is switched to the switching device, so that all the outdoor heat exchangers are defrosted.
In some embodiments of the present application, the step of obtaining the outdoor relative humidity value and the outdoor temperature value specifically includes:
the method comprises the steps of obtaining the running state of the air conditioner, judging whether the air conditioner is in a standby mode or a running mode, obtaining the outdoor relative humidity value and the outdoor temperature value when the air conditioner is in the standby mode, and obtaining the outdoor relative humidity value and the outdoor temperature value when the air conditioner is in the running mode until a trigger signal of shutdown is received.
In some embodiments of the present application, the indoor unit of the air conditioner includes an air guide plate and an indoor fan, the outdoor unit of the air conditioner includes an outdoor fan, and before the step of performing the split self-cleaning mode, the method further includes the following steps:
controlling the air deflector to rotate to a first angle;
controlling the rotating speed of the indoor fan to be 500-800 r/min;
and controlling the outdoor fan to be closed.
In some embodiments of the present application, the indoor unit of the air conditioner includes an air deflector and an indoor fan, the outdoor unit of the air conditioner includes an outdoor fan, and before the step of performing the integral self-cleaning mode, the method further includes the following steps:
controlling the air deflector to rotate to a first angle;
controlling the rotating speed of the indoor fan to be 500-800 r/min;
and controlling the outdoor fan to be closed.
Another object of the present invention is to provide an air conditioner, comprising:
the refrigeration system comprises an indoor unit heat exchange assembly, a refrigerant flow direction switching device, a compressor and an outdoor unit heat exchange assembly which are sequentially connected in series, wherein the outdoor unit heat exchange assembly comprises at least two outdoor heat exchangers, the two outdoor heat exchangers are arranged in parallel, and the upstream sides of the outdoor heat exchangers are connected with an electromagnetic two-way valve;
the temperature sensor is used for acquiring an outdoor temperature value;
the humidity sensor is used for acquiring an outdoor relative humidity value;
a controller electrically connected to the refrigeration system, the humidity sensor, and the temperature sensor, and configured to: receiving a trigger signal for starting a self-cleaning function of the air conditioner; receiving the outdoor relative humidity value and the outdoor temperature value; controlling the air conditioner to enter an integral self-cleaning mode or a split self-cleaning mode; controlling the electromagnetic two-way valve to be opened or closed; and controlling the reversing of the refrigerant flow direction switching device.
In some embodiments of the present application, the outdoor unit heat exchange assembly further includes a supercooling heat exchanger disposed at an upstream side of the parallel branch point of the outdoor heat exchanger.
It is a further object of the present invention to provide a computer readable storage medium storing a computer program which, when executed, implements the steps of the above-described self-cleaning control method.
The invention provides a self-cleaning control method of an air conditioner, the air conditioner and a computer readable storage medium, compared with the prior art, the self-cleaning control method has the following beneficial effects:
the outdoor heat exchangers are arranged in parallel, so that the heat exchange efficiency of the outdoor unit is not influenced, when the outdoor temperature is high or the relative humidity is low, namely the frosting condition is severe, the air conditioner is controlled to carry out a split self-cleaning mode, partial outdoor heat exchangers can be sequentially controlled to be frosted first, the frosting difficulty is reduced, the requirement on the refrigeration cold quantity of the air conditioner is low, and only the defrosting condition of the partial outdoor heat exchangers needs to be met, so that each outdoor heat exchanger is fully frosted and defrosted, and the self-cleaning effect of the outdoor unit is optimized; when the frosting condition is better, the air conditioner is controlled to carry out an integral self-cleaning mode, and the self-cleaning efficiency is improved.
Drawings
FIG. 1 is a functional schematic diagram of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating an exemplary embodiment of an outdoor unit self-cleaning control;
fig. 3 is a schematic flow chart of the outdoor unit self-cleaning control in the split self-cleaning mode according to the embodiment of the present invention;
fig. 4 is a schematic flow chart illustrating an overall self-cleaning mode for self-cleaning control of an outdoor unit according to an embodiment of the present invention.
In the figure: 1. a refrigeration system; 11. the indoor unit heat exchange assembly; 12. a refrigerant flow direction switching device; 13. a compressor; 14. an outdoor heat exchange assembly; 141. an outdoor heat exchanger; 142. an electromagnetic two-way valve; 143. a subcooling heat exchanger; 2. a temperature sensor; 3. a humidity sensor; 4. a controller; 5. an air deflector; 6. an indoor fan; 7. an outdoor fan.
Detailed Description
The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It will be understood that in the description of the present application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application. The terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, i.e. a feature defined as "first", "second" may explicitly or implicitly include one or more of such features. Further, unless otherwise specified, "a plurality" means two or more.
It should be noted that, in the description of the present application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
As shown in fig. 1, an embodiment of the present invention provides an air conditioner, which includes a refrigeration system 1, a temperature sensor 2, a humidity sensor 3, and a controller 4, where the refrigeration system 1 includes an indoor unit heat exchange assembly 11, a refrigerant flow direction switching device 12, a compressor 13, and an outdoor unit heat exchange assembly 14 connected in series in sequence, the outdoor unit heat exchange assembly 14 includes at least two outdoor heat exchangers 141, the two outdoor heat exchangers 141 are arranged in parallel, an upstream side of each outdoor heat exchanger 141 is connected to an electromagnetic two-way valve 142, the temperature sensor 2 is used for obtaining an outdoor temperature value, the humidity sensor 3 is used for obtaining an outdoor relative humidity value, and the controller 4 is electrically connected to the refrigeration system 1, the humidity sensor 3, and the temperature sensor 2. The refrigerant flow direction switching device 12 is generally implemented by a four-way valve.
The controller 4 may be implemented by an existing control board of the air conditioner by configuring a self-cleaning control program or by presetting a self-cleaning control logic, and the hardware configuration itself is well known to those skilled in the art.
The controller 4 is configured to: receiving a trigger signal for starting a self-cleaning function of the air conditioner; receiving an outdoor relative humidity value and an outdoor temperature value; controlling the air conditioner to enter an integral self-cleaning mode or a split self-cleaning mode; controlling the electromagnetic two-way valve 142 to be opened or closed; controlling the refrigerant flow direction reversing device 12.
That is, the process of the controller 4 performing the self-cleaning control is: receiving a trigger signal for starting a self-cleaning function of the air conditioner, acquiring an operation state of the air conditioner, judging whether the air conditioner is in a standby mode, acquiring an outdoor relative humidity value and an outdoor temperature value when the air conditioner is in the standby mode, acquiring the outdoor relative humidity value and the outdoor temperature value until receiving the trigger signal for shutdown when the air conditioner is in the operation mode, judging whether the outdoor relative humidity value is smaller than a preset humidity value and judging whether the outdoor temperature value is larger than the preset temperature value, if the outdoor relative humidity value is smaller than the preset humidity value or the outdoor temperature value is larger than the preset temperature value, performing a split self-cleaning mode, and if the outdoor relative humidity value is not smaller than the preset humidity value and the outdoor temperature value is not larger than the preset temperature value, performing an integral self-cleaning mode; when the split self-cleaning mode is performed, the electromagnetic two-way valves 142 of some outdoor heat exchangers 141 are controlled to be opened, other electromagnetic two-way valves 142 are controlled to be closed, the refrigerant flow direction switching device 12 is adjusted to a state that the compressor 13 provides compressed refrigerant for the indoor heat exchange assembly 11, so that some outdoor heat exchangers 141 are frosted, the electromagnetic two-way valves 142 of some outdoor heat exchangers 141 are controlled to be closed until the defrosting condition is met, the electromagnetic two-way valves 142 of other outdoor heat exchangers 141 are controlled to be opened, the steps are repeated until all outdoor heat exchangers 141 meet the defrosting condition, and the refrigerant flow direction is controlled to be reversed when the refrigerant flows to the switching device 12, so that all outdoor heat exchangers 141 are defrosted; when the integral self-cleaning mode is performed, all the electromagnetic two-way valves 142 are controlled to be opened, the refrigerant flow direction switching device 12 is adjusted to the state that the compressor 13 provides compressed refrigerant for the indoor unit heat exchange assembly 11, all the outdoor heat exchangers 141 are frosted, and after the defrosting condition is met, the refrigerant flow direction is controlled to be reversed when the refrigerant flows to the switching device 12, so that all the outdoor heat exchangers 141 are frosted.
Based on the structure, the outdoor heat exchangers 141 are arranged in parallel, heat exchange efficiency of the outdoor unit is not affected, when the outdoor temperature is high or the relative humidity is low, namely the frosting condition is severe, the air conditioner is controlled to carry out a split self-cleaning mode, partial outdoor heat exchangers 141 can be sequentially controlled to be frosted first, the frosting difficulty is reduced, the requirement on the refrigeration cold quantity of the air conditioner is low, only the frosting condition of partial outdoor heat exchangers 141 needs to be met, therefore, each outdoor heat exchanger 141 can be fully frosted and defrosted, and the self-cleaning effect of the outdoor unit is optimized; when the frosting condition is better, the air conditioner is controlled to carry out an integral self-cleaning mode, and the self-cleaning efficiency is improved.
Alternatively, in another embodiment, the outdoor heat exchangers 141 are provided in four. Therefore, the heat exchange efficiency of the outdoor unit can be ensured.
Alternatively, as shown in fig. 1, in the present embodiment, the outdoor heat exchange assembly 14 further includes a supercooling heat exchanger 143, and the supercooling heat exchanger 143 is disposed on an upstream side of the parallel branch point of the outdoor heat exchanger 141.
As shown in fig. 2, an embodiment of the present invention further provides a self-cleaning control method of an air conditioner, the air conditioner includes an indoor unit heat exchange assembly 11, a refrigerant flow direction switching device 12, a compressor 13, and an outdoor unit heat exchange assembly 14, which are sequentially connected in series, the outdoor unit heat exchange assembly 14 includes at least two outdoor heat exchangers 141, the two outdoor heat exchangers 141 are arranged in parallel, and an upstream side of each outdoor heat exchanger 141 is connected to an electromagnetic two-way valve 142, the self-cleaning control method of the air conditioner includes the following steps:
s1, receiving a trigger signal for starting a self-cleaning function of the air conditioner;
s2, acquiring an outdoor relative humidity value and an outdoor temperature value;
s3, judging to carry out a split self-cleaning mode or an integral self-cleaning mode according to the outdoor relative humidity value and the outdoor temperature value;
s4, when the split self-cleaning mode is carried out, controlling part of the outdoor heat exchanger 141 to frost and defrosting;
s5, when the integral self-cleaning mode is performed, all the outdoor heat exchangers 141 are controlled to frost and defrosting is performed.
Optionally, as shown in fig. 1, in this embodiment, the step of determining according to the outdoor relative humidity value and the outdoor temperature value includes:
and S31, if the outdoor relative humidity value is smaller than the preset humidity value or the outdoor temperature value is larger than the preset temperature value, performing a split self-cleaning mode, and if the outdoor relative humidity value is not smaller than the preset humidity value and the outdoor temperature value is not larger than the preset temperature value, performing an integral self-cleaning mode.
Alternatively, as shown in fig. 1, in the present embodiment, the preset humidity value is 50% to 70%.
Optionally, as shown in fig. 1, in the present embodiment, the preset temperature value is 20 to 40 ℃. When the outdoor temperature value is high or the outdoor relative humidity is low, the frosting is difficult to occur, so that the split self-cleaning mode is adopted, the frosting difficulty is low, and the self-cleaning effect is good.
Optionally, as shown in fig. 3, in the present embodiment, the split self-cleaning mode includes the following steps:
s41, controlling the partial electromagnetic two-way valve 142 to be opened, and controlling the other electromagnetic two-way valves 142 to be closed, wherein the partial electromagnetic two-way valve 142 may be one electromagnetic two-way valve 142, or may be a heat exchanger group formed by two or more electromagnetic two-way valves 142 and the corresponding outdoor heat exchanger 141;
s42, adjusting the refrigerant flow direction switching device 12 to a state where the compressor 13 provides compressed refrigerant to the indoor unit heat exchange assembly, so that the outdoor heat exchanger 141 corresponding to the electromagnetic two-way valve 142 frosts until the defrosting condition is met;
s43, controlling the electromagnetic two-way valve 142 to be closed;
s44, repeating the above steps until all the outdoor heat exchangers 141 satisfy the defrosting condition, and controlling the refrigerant flow direction to be reversed when the refrigerant flows to the switching device 12, so as to defrost all the outdoor heat exchangers 141. Certainly, the split self-cleaning mode may also be a mode in which after some of the outdoor heat exchangers 141 are first controlled to frost and defrost, other outdoor heat exchangers 141 are then controlled to frost and defrost, and the defrosting procedure is separately performed.
Optionally, as shown in fig. 4, in the present embodiment, the integral self-cleaning mode includes the following steps:
s51, controlling all the electromagnetic two-way valves 142 to be opened;
s52, adjusting the refrigerant flow direction switching device 12 to a state that the compressor 13 provides compressed refrigerant for the indoor unit heat exchange assembly, so that all the outdoor heat exchangers 141 are frosted until the defrosting condition is met;
s53, the flow of the refrigerant is controlled to be reversed when the refrigerant flows to the switching device 12, and all the outdoor heat exchangers 141 are defrosted.
Optionally, as shown in fig. 3, in this embodiment, the indoor unit of the air conditioner includes an air deflector 5 and an indoor fan 6, the outdoor unit of the air conditioner includes an outdoor fan 7, and before the step of performing the split self-cleaning mode, that is, the step of S4, the following steps are further included:
s31, controlling the air deflector 5 to rotate to a first angle;
s32, controlling the rotating speed of the indoor fan 6 to be 500-800 r/min;
and S33, controlling the outdoor fan 7 to be closed.
It should be understood that the above-described step may be included before the step of performing the overall self-cleaning mode, i.e., the step of S5. The air deflector 5 rotates around a horizontal axis and is used for controlling air outlet in the vertical direction, the first angle is an angle formed between the air deflector 5 and a vertical plane, the first angle can be selected to be 30-90 degrees, therefore, the air deflector 5 guides air flow to the upper side when frosting or defrosting is carried out, hot air or cold air generated by an indoor unit cannot blow to a human body at the moment, user experience is optimized, the air outlet is less due to the lower fan rotating speed, the indoor temperature is not influenced, and the frosting or defrosting effect can be optimized when the outdoor fan 7 is closed.
Optionally, as shown in fig. 2, in this embodiment, the step of obtaining the outdoor relative humidity value and the outdoor temperature value specifically includes:
and S11, acquiring the running state of the air conditioner, judging whether the air conditioner is in a standby mode or a running mode, when the air conditioner is in the standby mode, performing S2, namely acquiring an outdoor relative humidity value and an outdoor temperature value, and when the air conditioner is in the running mode, acquiring the outdoor relative humidity value and the outdoor temperature value until a trigger signal for shutdown is received. Therefore, the normal operation of the air conditioner is not influenced, the self-cleaning mode is carried out after the air conditioner is stopped, and the use of a user is not influenced.
Embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, where the computer program is executed to implement the steps of the self-cleaning control method proposed in the foregoing embodiments.
In summary, embodiments of the present invention provide a self-cleaning control method for an air conditioner, and a computer-readable storage medium.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.
Claims (10)
1. A self-cleaning control method of an air conditioner is characterized in that the air conditioner comprises an indoor unit heat exchange assembly, a refrigerant flow direction switching device, a compressor and an outdoor unit heat exchange assembly which are sequentially connected in series, the outdoor unit heat exchange assembly comprises at least two outdoor heat exchangers, the two outdoor heat exchangers are arranged in parallel, an electromagnetic two-way valve is connected to the upstream side of each outdoor heat exchanger, and the self-cleaning control method comprises the following steps:
receiving a trigger signal for starting a self-cleaning function of the air conditioner;
acquiring an outdoor relative humidity value and an outdoor temperature value;
judging to carry out a split self-cleaning mode or an integral self-cleaning mode according to the outdoor relative humidity value and the outdoor temperature value;
when the split self-cleaning mode is carried out, controlling part of the outdoor heat exchanger to frost and defrosting;
and when the integral self-cleaning mode is carried out, controlling all the outdoor heat exchangers to frost and defrosting.
2. A self-cleaning control method of an air conditioner according to claim 1, wherein the step of judging according to the outdoor relative humidity value and the outdoor temperature value comprises:
and if the outdoor relative humidity value is not less than the preset humidity value and the outdoor temperature value is not more than the preset temperature value, carrying out the integral self-cleaning mode.
3. A self-cleaning control method of an air conditioner according to claim 2, wherein:
the preset humidity value is 50-70%.
4. A self-cleaning control method of an air conditioner according to claim 2, wherein:
the preset temperature value is 20-40 ℃.
5. A self-cleaning control method of an air conditioner according to claim 1, wherein the split self-cleaning mode comprises the steps of:
controlling the opening of a part of electromagnetic two-way valves and controlling the closing of other electromagnetic two-way valves;
adjusting the refrigerant flow direction switching device to a state that the compressor provides compressed refrigerant for the indoor unit heat exchange assembly, so that the outdoor heat exchanger corresponding to the electromagnetic two-way valve is frosted until a defrosting condition is met;
controlling the part of the electromagnetic two-way valve to be closed;
and repeating the steps until all the outdoor heat exchangers meet the defrosting condition, and controlling the refrigerant flow direction to be reversed when the refrigerant flows to the switching device so as to defrost all the outdoor heat exchangers.
6. A self-cleaning control method of an air conditioner according to claim 1, wherein the overall self-cleaning mode comprises the steps of:
controlling all the two-way electromagnetic valves to be opened;
adjusting the refrigerant flow direction switching device to a state that the compressor provides compressed refrigerant for the indoor unit heat exchange assembly, so that all the outdoor heat exchangers are frosted until a defrosting condition is met;
and controlling the flow direction of the refrigerant to be reversed when the flow direction of the refrigerant is switched to the switching device, so that all the outdoor heat exchangers are defrosted.
7. A self-cleaning control method of an air conditioner as claimed in claim 1, wherein the step of obtaining the outdoor relative humidity value and the outdoor temperature value comprises:
the method comprises the steps of obtaining the running state of the air conditioner, judging whether the air conditioner is in a standby mode or a running mode, obtaining the outdoor relative humidity value and the outdoor temperature value when the air conditioner is in the standby mode, and obtaining the outdoor relative humidity value and the outdoor temperature value when the air conditioner is in the running mode until a trigger signal of shutdown is received.
8. The self-cleaning control method of an air conditioner as claimed in claim 1, wherein the indoor unit of the air conditioner includes an air guide plate and an indoor fan, the outdoor unit of the air conditioner includes an outdoor fan, and before the step of performing the split self-cleaning mode, the method further comprises the steps of:
controlling the air deflector to rotate to a first angle;
controlling the rotating speed of the indoor fan to be 500-800 r/min;
and controlling the outdoor fan to be closed.
9. An air conditioner, comprising:
the refrigeration system comprises an indoor unit heat exchange assembly, a refrigerant flow direction switching device, a compressor and an outdoor unit heat exchange assembly which are sequentially connected in series, wherein the outdoor unit heat exchange assembly comprises at least two outdoor heat exchangers, the two outdoor heat exchangers are arranged in parallel, and the upstream side of each outdoor heat exchanger is connected with an electromagnetic two-way valve;
the temperature sensor is used for acquiring an outdoor temperature value;
the humidity sensor is used for acquiring an outdoor relative humidity value;
a controller electrically connected to the refrigeration system, the humidity sensor, and the temperature sensor, and configured to: receiving a trigger signal for starting a self-cleaning function of the air conditioner; receiving the outdoor relative humidity value and the outdoor temperature value; controlling the air conditioner to enter an integral self-cleaning mode or a split self-cleaning mode; controlling the electromagnetic two-way valve to be opened or closed; and controlling the reversing of the refrigerant flow direction switching device.
10. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program which, when executed, implements the steps of the self-cleaning control method according to any one of claims 1-8.
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