CN110779142B - Air conditioner self-cleaning control method, controller and air conditioner - Google Patents
Air conditioner self-cleaning control method, controller and air conditioner Download PDFInfo
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- CN110779142B CN110779142B CN201911007524.2A CN201911007524A CN110779142B CN 110779142 B CN110779142 B CN 110779142B CN 201911007524 A CN201911007524 A CN 201911007524A CN 110779142 B CN110779142 B CN 110779142B
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- air conditioner
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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
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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
- 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
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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
- F24F11/88—Electrical aspects, e.g. circuits
Abstract
The invention provides an air conditioner self-cleaning control method, a controller and an air conditioner. The air conditioner comprises a heat exchanger, a motor arranged corresponding to the heat exchanger, a water mist generating device and a wind shield used for sealing an air outlet of an air duct of the air conditioner, and the control method comprises the following steps: a wind shield control step of controlling the wind shield to be in a closed position; a water mist generating step of controlling a water mist generating device to operate so as to generate water mist; a step of frost condensation, in which the air conditioner is controlled to operate in a frost condensation mode to cause the heat exchanger to frost; and a defrosting step, controlling the air conditioner to operate a defrosting mode to defrost the heat exchanger when a defrosting condition is achieved. According to the air conditioner self-cleaning control method, the controller and the air conditioner, provided by the invention, water mist in the air conditioner is not easy to overflow, the water mist can be ensured to effectively wrap and cover the surfaces of components in an air duct such as a heat exchanger to form a frost layer, the components in the air duct can be comprehensively cleaned, the self-cleaning effect is better, and the efficiency is higher.
Description
Technical Field
The invention belongs to the technical field of air conditioning, and particularly relates to an air conditioner self-cleaning control method, a controller and an air conditioner.
Background
After the air conditioner is placed or used for a long time, a large amount of dirt such as dust, lint and the like can exist in the air conditioner, although a corresponding filter screen is arranged at an air inlet of the air conditioner, the dirt is still inevitably attached to a heat exchanger of an indoor unit, so that on one hand, the heat exchange performance of the heat exchanger is reduced, and the performance of the air conditioner is reduced and the energy consumption is increased; on the other hand, bacteria and mildew are easy to grow, and threaten the health of the user.
In order to clean the heat exchanger of the indoor unit, the prior art discloses that a corresponding humidifying component is arranged in the air conditioner, the humidifying component is used for forming water mist to humidify the heat exchanger, the humidifying component is expected to wrap and cover a frosting layer on the heat exchanger and then defrosting operation is carried out, so that the self-cleaning purpose of the air conditioner is realized, the self-cleaning mode is clean thoroughly, but the internal water mist is easy to escape to the external space of the air conditioner through an air inlet in the cleaning process, inconvenience is brought to users on one hand, on the other hand, the water mist can not be guaranteed to effectively wrap and cover the surface of the heat exchanger to form the frosting layer, meanwhile, the components in an air duct can not be cleaned comprehensively, the self-cleaning effect is poor, and the self-cleaning efficiency.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to provide an air conditioner self-cleaning control method, a controller and an air conditioner, so that water mist in the air conditioner is not easy to overflow in the process of self-cleaning the air conditioner, the water mist can be ensured to effectively wrap and cover the parts in the air duct to form a frost layer, the parts in the air duct can be comprehensively cleaned, the self-cleaning effect is better, and the efficiency is higher.
In order to solve the above problems, the present invention provides a self-cleaning control method for an air conditioner, wherein the air conditioner comprises an air duct, a fan blade in the air duct, a motor for driving the fan blade, a water mist generating device, and a wind shield for sealing an air outlet of the air duct, and the control method comprises:
a wind shield control step of controlling the wind shield to be in a closed position;
a water mist generating step of controlling the water mist generating device to operate to generate water mist;
a frost condensation step of controlling the air conditioner to operate in a frost condensation mode to cause the components in the air duct to be condensed;
and a defrosting step, when the defrosting condition is achieved, controlling the air conditioner to operate in a defrosting mode to defrost the components in the air duct.
Preferably, the first and second electrodes are formed of a metal,
and an airflow driving step is further included between the wind shield control step and the water mist generating step, the motor is controlled to run at a first rotating speed for a first preset time, the motor has a second rotating speed corresponding to a heat exchange mode, and the first rotating speed is lower than the second rotating speed.
Preferably, the first and second electrodes are formed of a metal,
after the water mist generating step, before the defrosting step, the method further comprises:
after the water mist generating device operates for a second preset time, controlling the water mist generating device to stop operating; or, a humidity detection step, namely detecting the air humidity in the air duct, and controlling the water mist generation device to stop running when the air humidity is higher than a first humidity threshold value.
Preferably, the first and second electrodes are formed of a metal,
the defrosting conditions comprise: the time of the air conditioner running in the frost condensation mode reaches preset time, or the time when the temperature in the air duct is lower than the preset frost condensation temperature reaches preset time.
Preferably, the first and second electrodes are formed of a metal,
the air conditioner further comprises a heating device,
after the defrosting step, the method further comprises the following steps:
and a drying and sterilizing step, controlling the heating device to operate so as to dry the components in the air duct of the air conditioner and sterilize the components.
Preferably, the first and second electrodes are formed of a metal,
an air duct water receiving tray is arranged at the bottom of the air duct,
after the defrosting step, the method further comprises the following steps:
and a sewage emptying confirmation step, namely detecting the sewage amount in the air duct water receiving tray, and executing the drying and sterilizing step when the sewage amount is lower than a first preset water amount.
Preferably, the first and second electrodes are formed of a metal,
after the drying and sterilizing step, the method further comprises the following steps:
and a waste heat emptying step, namely controlling the wind shield to be in an open position after the heating device runs for a third preset time period, and controlling the motor to run for a fourth preset time period at a third rotating speed.
Preferably, the first and second electrodes are formed of a metal,
the air conditioner further comprises a water tank for supplying washing water to the water mist generating device;
before the water mist generating step, the method further comprises the following steps:
and a water tank water quantity detection step of detecting the cleaning water quantity in the water tank, and reminding a user of filling cleaning water into the water tank when the cleaning water quantity is lower than a second preset water quantity.
The invention also provides a controller comprising a processor, a memory and a program stored on the memory and operable on the processor, wherein the processor implements the steps of the method when executing the program.
The invention also provides an air conditioner which comprises the controller.
The invention provides an air conditioner self-cleaning control method, a controller and an air conditioner, wherein a wind shield control step is executed before a water mist generation step, and the wind shield is controlled to be in a closed position, so that an air duct air outlet of the air conditioner is closed, it can be understood that a heat exchanger (indoor side) is arranged at the air duct air inlet, and a relatively closed space is formed between the heat exchanger and the wind shield, so that water mist can be more efficiently dispersed on a wall body of an air duct and parts such as the heat exchanger, a fan blade, a wind guide plate, the wind shield and the like and enter a heat exchange core part of the heat exchanger when the water mist generation step is executed, the water mist can be obviously and favorably and efficiently enter the inside of the heat exchanger, and the surface of the heat exchanger, the inside of the air duct, the surface of the air duct and other air duct internal parts, thereby further improve the effect of air conditioner automatically cleaning, simultaneously, can not scatter to the user side outward through the air outlet after water smoke produces, prevent to bring inconvenience for the user uses.
Drawings
FIG. 1 is a schematic structural diagram of an air conditioner according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is a flow chart illustrating a self-cleaning control method for an air conditioner according to an embodiment of the present invention;
FIG. 4 is a schematic flow chart illustrating the humidity detection step according to the embodiment of the present invention;
fig. 5 is a schematic flow chart illustrating the steps of detecting the water level in the water tank according to the embodiment of the present invention.
The reference numerals are represented as:
1. a heat exchanger; 2. a motor; 21. a fan blade; 3. a water mist generating device; 4. a wind deflector; 5. a heating device; 6. a water pan of the heat exchanger; 7. an air duct water pan; 8. a water tank.
Detailed Description
Referring to fig. 1 to 5 in combination, according to an embodiment of the present invention, there is provided a self-cleaning control method for an air conditioner, where the air conditioner includes an air duct, and a heat exchanger 1, a fan 21 (such as a cross-flow fan, a centrifugal fan, etc.), a water mist generator 3, and a wind shield 4 are disposed in the air duct, where the fan 21 is driven by a motor 2, the wind shield 4 is used to seal an air outlet of the air duct, the heat exchanger 1 is located at an air inlet of the air duct, and the water mist generator 3 is disposed in the air duct to ensure that a required water mist is provided when the air conditioner performs self-cleaning, and it can be understood that the air duct is a casing through which an air flow passes between the air inlet and the air outlet in the air conditioner, and the: the method comprises the following steps of (1) controlling a wind shield 4 to be in a closed position, so that an air outlet of an air duct of the air conditioner is closed, wherein a relatively closed space is formed between a heat exchanger 1 and the wind shield 4 at the moment; a water mist generating step, in which the water mist generating device 3 is controlled to operate to generate water mist, the generated water mist can be dispersed on the wall body of the air duct and the air duct internal parts (including the air duct inner wall) such as the heat exchanger 1, the fan blades 21, the air deflector 4 and the like, and enter the heat exchange core part (namely the position of the heat exchanger 1 through which the heat exchange air flow passes) of the heat exchanger 1, and the water mist cannot be dispersed to the user side after being generated because the air deflector 4 is in the closed position; a frost condensation step of controlling the air conditioner to operate in a frost condensation mode to cause the components in the air duct to be condensed; and a defrosting step, when the defrosting condition is achieved, controlling the air conditioner to operate in a defrosting mode to defrost the components in the air duct. In the technical scheme, a wind shield control step is executed before a water mist generation step, and the wind shield 4 is controlled to be in a closed position, so that an air outlet of an air duct of the air conditioner is closed, and it can be understood that the heat exchanger 1 (indoor side) is arranged at the air inlet of the air duct, and a relatively closed space is formed between the heat exchanger 1 and the wind shield 4 at the moment, so that water mist can be more efficiently dispersed on a wall body of the air duct and parts such as the heat exchanger 1, a fan blade 21, an air deflector, the wind shield 4 and the like and enter a heat exchange core part of the heat exchanger 1 when the water mist generation step is executed, which obviously facilitates the water mist to efficiently enter the heat exchanger 1, thereby ensuring that air duct frost layers such as the surface and the inside of the heat exchanger (namely a heat exchange surface of heat exchange airflow, the surface of the air, thereby further improve the effect of air conditioner automatically cleaning, simultaneously, can not dispel to the user side through the air outlet outward after water smoke produces and prevent to bring inconvenience for the user uses.
Further, an airflow driving step is included between the wind shield control step and the water mist generating step, the motor 2 is controlled to run at a first rotating speed for a first preset time, the motor 2 has a second rotating speed corresponding to the heat exchange mode, the first rotating speed is lower than the second rotating speed, namely, in the step, the motor 2 only needs to be guaranteed to run at a relatively lower speed, the relatively lower speed only needs to be lower than the lowest rotating speed in the heat exchange mode of the air conditioner, namely the second rotating speed, by adopting the mode, the dispersion effect of the water mist in the air duct can be guaranteed more effectively, the water mist can enter the heat exchange core part of the heat exchanger 1, and further the effective and comprehensive wrapping and covering of the water mist is formed inside the heat exchanger 1, which is obviously beneficial to the guarantee of the subsequent self-cleaning effect, and more importantly, the running motor 2 can enable external airflow to enter a closed space, the wrapped water mist impacts each component in the air duct, and the wind shield 4 is closed, so that the airflow passes through the heat exchanger 1 in a countercurrent manner and flows out of the heat exchanger 1 from the air inlet of the air duct, and the water mist is wrapped on the heat exchange core of the heat exchanger 1. Specifically, for example, the rotation speed of the motor 2 in the heat exchange mode of the air conditioner has multiple gears, and assuming that the lowest gear rotation speed is 600r/min, that is, the second rotation speed is 600r/min, at this time, the first rotation speed of the motor 2 may be selected to be 200r/min to 400r/min, and it can be understood that the dirt receiving degree of the heat exchanger 1 is proportional to the selection of the first rotation speed, that is, the more the pollution, the higher the first rotation speed.
Preferably, after the water mist generating step, before the defrosting step, the method further comprises: after the water mist generating device 3 operates for a second preset time, controlling the water mist generating device 3 to stop operating, wherein the water mist generating device 3 and the motor 2 can be stopped simultaneously to prepare for a subsequent frosting step; for example, the self-cleaning control method further includes a humidity detection step of detecting the air humidity in the air duct, and when the air humidity is higher than a first humidity threshold, the water mist generation device 3 is controlled to stop operating, and the selection of the first humidity threshold at this time can be obtained according to a test, and the set value thereof is based on ensuring the quality of a frost layer formed after the frosting step.
Preferably, the defrosting conditions comprise: specifically, for example, after the air conditioner operates in the frost condensing mode for 10min, a required frost layer is formed on the surface of a component in the air duct and in a heat exchange core of the heat exchanger 1, and water mist peels off dirt attached to the surface of the component in the process of forming the frost layer; or the time that the temperature in the air duct is lower than the frost setting temperature reaches 5min, so that the frost forming effect can be ensured.
Preferably, after the defrosting step, the method further comprises the following steps: and a drying and sterilizing step, wherein the air conditioner further comprises a heating device 5, the heating device 5 is controlled to operate so as to dry and sterilize components in an air duct of the air conditioner, the heating device 5 can be realized by adopting an electric heating module, and certainly, the drying and sterilizing purposes can also be realized by adopting an infrared heating device.
The wind channel bottom is equipped with wind channel water collector 7, after the defrosting step, still include: and a sewage emptying confirmation step of detecting the amount of sewage in the air duct water receiving tray 7, and executing the drying and sterilizing step when the amount of sewage is lower than a first preset water amount. The amount of wastewater in the wastewater emptying confirmation step may be detected by a corresponding water level sensor or a corresponding weight sensor, for example. The air conditioner further comprises a heat exchanger water receiving disc 6, the heat exchanger water receiving disc 6 is located below the heat exchanger 1 and used for receiving condensed water formed by the heat exchanger 1 or forming sewage through defrosting, the heat exchanger water receiving disc 6 is connected with an air channel water receiving disc 7 below the heat exchanger water receiving disc 6 through a pipeline, and water generated in the heat exchanger 1 and an air channel can be finally collected into the air channel water receiving disc 7 and discharged out of the air conditioner.
After the drying and sterilizing step, the method further comprises the following steps: and a residual heat emptying step, wherein after the heating device 5 runs for a third preset time, the wind shield 4 is controlled to be in an open position, the motor 2 is controlled to run at a third rotating speed for a fourth preset time, the residual heat emptying step at the moment can completely discharge hot steam in the air conditioner out of an air duct of the air conditioner after the air conditioner is self-cleaned, and the running motor 2 is utilized to dry the inside of the air duct, so that discomfort caused by the internal hot air and moisture when a user uses the air conditioner is prevented.
Further, the air conditioner further comprises a water tank 8, the water tank 8 is used for providing cleaning water to the water mist generating device 3, namely the water mist generating device 3 itself does not have a water storage function at this time and only has an atomizing function, and the water tank 8 serves as a water supply device, so that the water mist generating device 3 can be flexibly arranged, for example, the water tank 8 can be arranged near the wind shield 4, and the water tank 8 is arranged near the base of the air conditioner or other positions convenient for adding water; in this case, before the water mist generating step, the method further includes: and a water tank water amount detection step of detecting the amount of the cleaning water in the water tank 8, and when the amount of the cleaning water is lower than a second preset water amount, reminding a user of filling the cleaning water into the water tank (for example, sending corresponding prompt tones, prompt messages and the like to remind the user of filling the cleaning water) so as to ensure that the water amount is sufficient.
There is also provided, in accordance with an embodiment of the present invention, a controller, including a processor, a memory, and a program stored on the memory and operable on the processor, the processor implementing the steps of the above method when executing the program.
According to an embodiment of the present invention, there is also provided an air conditioner including the controller described above.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention. The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.
Claims (9)
1. A self-cleaning control method of air conditioner is characterized in that,
the air conditioner comprises an air duct, fan blades (21) positioned in the air duct, a motor (2) for driving the fan blades (21), a water mist generating device (3) and a wind shield (4) for sealing an air outlet of the air duct, wherein the control method comprises the following steps:
a wind shield control step of controlling the wind shield (4) to be in a closed position;
a water mist generating step of controlling the water mist generating device (3) to operate so as to generate water mist;
a frost condensation step of controlling the air conditioner to operate in a frost condensation mode to cause the components in the air duct to be condensed;
a defrosting step, when a defrosting condition is achieved, controlling the air conditioner to operate a defrosting mode to defrost the components in the air duct;
an airflow driving step is further included between the wind shield control step and the water mist generating step, the motor (2) is controlled to run at a first rotating speed for a first preset time so as to ensure the dispersion effect of the generated water mist in the air duct, the motor (2) has a second rotating speed corresponding to a heat exchange mode, and the first rotating speed is lower than the second rotating speed; the more contaminated the heat exchanger (1) is, the higher the first rotational speed is.
2. The control method according to claim 1,
after the water mist generating step, before the defrosting step, the method further comprises:
controlling the water mist generating device (3) to stop running after the water mist generating device (3) runs for a second preset time; or in the humidity detection step, the air humidity in the air channel is detected, and when the air humidity is higher than a first humidity threshold value, the water mist generation device (3) is controlled to stop running.
3. The control method according to claim 1,
the defrosting conditions comprise: the time of the air conditioner running in the frost condensation mode reaches preset time, or the time when the temperature in the air duct is lower than the preset frost condensation temperature reaches preset time.
4. The control method according to claim 1,
the air conditioner also comprises a heating device (5),
after the defrosting step, the method further comprises the following steps:
and a drying and sterilizing step, wherein the heating device (5) is controlled to operate so as to dry and sterilize components in an air duct of the air conditioner.
5. The control method according to claim 4,
an air duct water receiving tray (7) is arranged at the bottom of the air duct,
after the defrosting step, the method further comprises the following steps:
and a sewage emptying confirmation step, namely detecting the sewage amount in the air duct water receiving tray (7), and executing the drying and sterilizing step when the sewage amount is lower than a first preset water amount.
6. The control method according to claim 4,
after the drying and sterilizing step, the method further comprises the following steps:
and a residual heat emptying step, namely controlling the wind shield (4) to be in an open position and controlling the motor (2) to operate at a third rotating speed for a fourth preset time after the heating device (5) operates for a third preset time.
7. The control method according to claim 1,
the air conditioner also comprises a water tank (8), and the water tank (8) is used for supplying washing water to the water mist generation device (3);
before the water mist generating step, the method further comprises the following steps:
and a water tank water amount detection step of detecting the amount of the cleaning water in the water tank (8), and reminding a user to fill the water tank with cleaning water when the amount of the cleaning water is lower than a second preset water amount.
8. A controller comprising a processor, a memory, and a program stored in the memory and operable on the processor, the processor implementing the steps of the method of any one of claims 1 to 7 when executing the program.
9. An air conditioner characterized by comprising the controller of claim 8.
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| CN111380154A (en) * | 2020-03-27 | 2020-07-07 | 广东美的制冷设备有限公司 | Intelligent cleaning control method for air conditioner |
| CN113623819B (en) * | 2020-05-06 | 2022-09-06 | 青岛海尔空调器有限总公司 | Method and device for self-cleaning of air conditioner and air conditioner |
| CN114688627B (en) * | 2020-12-28 | 2023-10-27 | 广东美的制冷设备有限公司 | Self-cleaning method of air conditioner, air conditioner and computer readable storage medium |
| CN115164387A (en) * | 2022-07-29 | 2022-10-11 | 海信空调有限公司 | Air conditioner and self-cleaning control method thereof |
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| JPH0718570B2 (en) * | 1989-11-17 | 1995-03-06 | 日本農薬株式会社 | Air purification ventilation air conditioner and control system of the device |
| CN104654460A (en) * | 2015-01-13 | 2015-05-27 | 广东美的制冷设备有限公司 | Air conditioner and cleaning control method used for air conditioner |
| CN105928071B (en) * | 2016-05-06 | 2019-10-25 | 广东美的制冷设备有限公司 | Air conditioner and its cleaning control method |
| CN106556106B (en) * | 2016-11-09 | 2020-03-31 | 青岛海尔空调器有限总公司 | Control method and device for self-cleaning of indoor unit of air conditioner |
| CN106568173A (en) * | 2016-11-09 | 2017-04-19 | 青岛海尔空调器有限总公司 | Air conditioner cleaning device and cleaning method |
| CN106679067A (en) * | 2016-11-11 | 2017-05-17 | 青岛海尔空调器有限总公司 | Self-cleaning method for air conditioner heat exchanger |
| CN107525216A (en) * | 2017-07-26 | 2017-12-29 | 青岛海尔空调器有限总公司 | Air conditioner and its control method with self-cleaning function |
| CN107514682A (en) * | 2017-07-26 | 2017-12-26 | 青岛海尔空调器有限总公司 | Air conditioner room unit with self-cleaning function |
| CN107525221A (en) * | 2017-07-31 | 2017-12-29 | 青岛海尔空调器有限总公司 | A kind of self-cleaning control method and device of air-conditioning |
| CN107763874A (en) * | 2017-10-10 | 2018-03-06 | 广东美的制冷设备有限公司 | The self cleaning method and air conditioner of heat exchanger of air conditioner |
| CN107631410A (en) * | 2017-10-10 | 2018-01-26 | 广东美的制冷设备有限公司 | The self cleaning method and air conditioner of heat exchanger of air conditioner |
| CN111356881B (en) * | 2018-10-05 | 2022-03-04 | 日立江森自控空调有限公司 | Air conditioner and control method thereof |
| CN110243055B (en) * | 2019-06-14 | 2020-12-18 | 海信家电集团股份有限公司 | Air conditioner and self-cleaning method thereof |
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