CN114198888A - Mildew-proof control method for air conditioner - Google Patents
Mildew-proof control method for air conditioner Download PDFInfo
- Publication number
- CN114198888A CN114198888A CN202111276639.9A CN202111276639A CN114198888A CN 114198888 A CN114198888 A CN 114198888A CN 202111276639 A CN202111276639 A CN 202111276639A CN 114198888 A CN114198888 A CN 114198888A
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- China
- Prior art keywords
- mildew
- indoor
- temperature
- controlled
- 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
- F24F11/62—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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- 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 mould-proof control method, which comprises the following steps: detecting whether a shutdown signal is received in a dehumidification mode and a refrigeration mode; if yes, detecting the indoor return air inlet temperature and the evaporator temperature; judging whether the indoor air return inlet temperature and the evaporator temperature reach the mildew-prone condition or not according to the difference value; if so, controlling to open the air deflector and controlling the indoor fan to operate at a first rotating speed; if not, the air deflector is controlled to be opened, and the indoor fan is controlled to operate at a second rotating speed, wherein the second rotating speed is smaller than the first rotating speed. The mildew-proof control method of the air conditioner, provided by the embodiment of the invention, has the advantages of good mildew-proof effect, comfortable feeling of a user, low energy consumption and the like.
Description
Technical Field
The invention relates to the technical field of air conditioning equipment, in particular to a mildew-proof control method for an air conditioner.
Background
After the air conditioner is shut down in a refrigeration or dehumidification mode, the temperature of an indoor unit of the air conditioner, particularly the temperature of an evaporator, is lower than the indoor environment temperature, the temperature of the evaporator gradually rises to be the same as the indoor environment temperature along with the closing of the air conditioner, air at an indoor air return opening enters the indoor unit of the air conditioner and is condensed into condensate water when meeting the condensation, the indoor unit is easy to mildew or the microorganisms exceed the standard, and the air is polluted when the air conditioner is started next time. The air conditioner in the related art heats the inside of the indoor unit by controlling the heating operation of the compressor, so that the moisture of the indoor unit is quickly evaporated to dryness, but the heating operation causes poor user experience and energy consumption. Some air conditioners enable the temperature inside an indoor unit to be close to the temperature of the indoor environment in a mode of supplying air to an indoor fan, the problem of condensation of condensed water is solved, however, the mildew-proof method does not distinguish the mildew-proof condition inside the air conditioner, the rotating speed of the indoor fan cannot adapt to the mildew-proof condition inside the air conditioner, the mildew-proof effect is poor, indoor personnel can feel uncomfortable wind, and extra energy consumption is increased.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, one objective of the present invention is to provide a mildew-proof control method for an air conditioner, which has the advantages of good mildew-proof effect, comfortable feeling for users, low energy consumption, etc.
In order to achieve the above object, an embodiment of the present invention provides a method for controlling mildew resistance of an air conditioner, including:
detecting whether a shutdown signal is received in a dehumidification mode and a refrigeration mode;
if yes, detecting the indoor return air inlet temperature and the evaporator temperature;
judging whether the indoor air return inlet temperature and the evaporator temperature reach the mildew-prone condition or not according to the difference value;
if so, controlling to open the air deflector and controlling the indoor fan to operate at a first rotating speed;
if not, the air deflector is controlled to be opened, and the indoor fan is controlled to operate at a second rotating speed, wherein the second rotating speed is smaller than the first rotating speed.
The mildew-proof control method of the air conditioner provided by the embodiment of the invention has the advantages of good mildew-proof effect, comfortable feeling of users, low energy consumption and the like.
According to some embodiments of the present invention, the determining whether the mildew-prone condition is reached according to the difference between the indoor return air inlet temperature and the evaporator temperature includes:
calculating the difference value between the indoor return air inlet temperature and the evaporator temperature;
judging whether the difference value between the indoor return air inlet temperature and the evaporator temperature is greater than a preset temperature difference or not;
if yes, judging that the mildew-prone condition is achieved;
if not, judging that the mildew-prone condition is not reached.
According to some embodiments of the present invention, when the mildew-prone condition is not met, the indoor fan is controlled to operate at the second rotation speed for a preset operation time and then is stopped.
According to some embodiments of the present invention, when the mildew-prone condition is reached, the indoor return air inlet temperature and the evaporator temperature are detected while the indoor fan is operating at a first rotational speed;
judging whether the difference value between the indoor return air inlet temperature and the evaporator temperature is less than or equal to the preset temperature difference;
and if so, controlling the indoor fan to operate at the second rotating speed for a preset operation time.
Further, when the mildew-prone condition is achieved, detecting the indoor return air inlet temperature and the evaporator temperature once every preset interval time, and judging whether the difference value between the indoor return air inlet temperature and the evaporator temperature detected at the time is smaller than or equal to the preset temperature difference.
According to some embodiments of the invention, after the air deflector is controlled to be opened, the air deflector is controlled to swing cyclically at intervals between different opening angles.
According to some embodiments of the invention, after the air deflector is controlled to be opened, the air deflector is controlled to continuously and circularly swing between different opening angles.
According to some embodiments of the present invention, when the shutdown signal is received in the dehumidification mode and the refrigeration mode, it is determined whether the indoor environment is in a user-off state;
and if so, detecting the indoor return air inlet temperature and the evaporator temperature.
According to some specific embodiments of the invention, after the air deflector is controlled to be opened and the indoor fan is controlled to operate, a signal for entering the mildew-proof mode is sent out through at least one of voice, light information, a display screen and an intelligent APP.
According to some embodiments of the invention, the first rotation speed is a maximum rotation speed of the indoor fan, and the second rotation speed is a minimum rotation speed of the indoor fan.
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 above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flowchart of a mildew control method of an air conditioner according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
An air conditioner mold proofing control method according to an embodiment of the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1, the air conditioner mildew control method according to the embodiment of the present invention includes:
detecting whether a shutdown signal is received in a dehumidification mode and a refrigeration mode;
if yes, detecting the indoor return air inlet temperature and the evaporator temperature;
judging whether the indoor air return inlet temperature and the evaporator temperature reach the mildewing-prone condition or not according to the difference value;
if so, controlling to open the air deflector and controlling the indoor fan to operate at a first rotating speed;
if not, the air deflector is controlled to be opened, and the indoor fan is controlled to operate at a second rotating speed which is lower than the first rotating speed.
For example, the indoor return air inlet temperature and the evaporator temperature are both detected by temperature sensors, and the detection of the evaporator temperature is specifically the detection of the temperature of an evaporator coil. In the dehumidification mode and the cooling mode, the evaporator temperature is lower than the indoor ambient temperature. Indoor fan can have a plurality of gears, like five gears, first rotational speed and second rotational speed are located the gear of difference respectively, and first rotational speed and second rotational speed can be selected according to the mould proof demand.
According to some embodiments of the present invention, after detecting whether the shutdown signal is received in the dehumidification mode and the refrigeration mode, the temperature of the air flow at the indoor air return inlet is high, and condensation is easily generated near the evaporator with low temperature in the process that the air flow at the indoor air return inlet flows to the evaporator. Whether the condition of easy mildew generation is achieved is judged according to the difference value of the indoor return air inlet temperature and the evaporator temperature, and the difference value of the evaporator temperature and the indoor return air inlet temperature determines the degree of condensate water generated by the indoor unit of the air conditioner near the evaporator. By detecting the temperature of the indoor return air inlet, the temperature of the air sucked into the indoor unit of the air conditioner can be accurately obtained, and whether the mildew-prone condition is met or not is judged more accurately according to the difference value of the temperature of the indoor return air inlet and the temperature of the evaporator.
When the condition that the mildew is easy to grow is met, the air deflector is controlled to be opened, the indoor fan is controlled to operate at the first rotating speed, airflow flowing of the evaporator can be accelerated, condensation is prevented from being generated nearby the evaporator, airflow circulating flowing inside the air conditioner is accelerated, cold quantity nearby the evaporator is rapidly conveyed indoors, meanwhile, indoor heat is rapidly conveyed to the evaporator, indoor environment temperature and evaporator temperature are made to be close, the difference value between the indoor return air inlet temperature and the evaporator temperature is further reduced, cold quantity required by condensation is timely reduced, and the mildew is prevented. And the indoor fan runs at the first rotating speed, the air speed is high, condensation generated by the evaporator can be dried quickly, and the mildew-producing condition is further inhibited.
When the condition that the indoor unit is easy to mildew is not met, the mildew in the indoor unit is not serious, but the indoor environment temperature and the evaporator temperature need to be balanced, the indoor fan is controlled to operate at the second rotating speed, the wind power transmitted to the indoor unit is reduced, the residual cold of the evaporator can be balanced with the indoor environment temperature, condensation is avoided, and the mildew-forming condition is inhibited. And the wind speed of the indoor fan at the second rotating speed is low, so that discomfort can not be brought to indoor personnel, more electricity is saved, and the noise generated by the indoor fan is reduced.
The indoor fan is controlled to operate at a first rotating speed under the condition of easily generating the mildew, and the indoor fan is controlled to operate at a second rotating speed under the condition of not easily generating the mildew. The anti-mildew performance is guaranteed, and meanwhile the comfort and the energy-saving performance of indoor users are fully considered.
Therefore, the mildew-proof control method of the air conditioner, provided by the embodiment of the invention, has the advantages of good mildew-proof effect, comfortable feeling of a user, low energy consumption and the like.
In some embodiments of the present invention, as shown in fig. 1, the determining whether the mildew-prone condition is reached according to the difference between the indoor return air inlet temperature and the evaporator temperature includes:
calculating the difference value between the indoor return air inlet temperature and the evaporator temperature;
judging whether the difference value between the indoor return air inlet temperature and the evaporator temperature is greater than a preset temperature difference or not;
if yes, judging that the mildew-prone condition is reached;
if not, judging that the condition of easy mildew is not reached.
For example, the preset temperature difference is 2 to 4 ℃,
when the difference value between the temperature of the indoor air return opening and the temperature of the evaporator is larger than the preset temperature difference, after the air flow of the indoor air return opening is conveyed to the evaporator, the air flow meets condensation to be condensed in the indoor unit to generate a large amount of condensation, and at the moment, the condition that the indoor air return opening is easy to mildew is judged to be achieved.
When the difference value between the temperature of the indoor air return inlet and the temperature of the evaporator is smaller than or equal to the preset temperature difference, the temperature of the evaporator is close to that of the indoor air return inlet, the temperature of the air flow conveyed to the evaporator is close to that of the indoor air return inlet, and the cold quantity required by condensation is small, so that a large amount of condensation can not be generated, and the condition that the condensation is easy to mildew is judged not to be reached at the moment.
In some embodiments of the present invention, as shown in fig. 1, when the mildew-prone condition is not reached, the indoor fan is controlled to operate at the second rotation speed for a preset operation time and then is stopped.
For example, the preset running time is 15 minutes to 30 minutes, when the condition that the indoor fan is easy to mildew is not reached, the indoor return air inlet temperature and the evaporator temperature are gradually close to each other after the indoor fan is controlled to run at the second rotating speed for the preset time, mildew is difficult to grow in the indoor unit, and at the moment, the indoor fan is stopped, so that energy consumption is reduced, and noise is reduced.
In some embodiments of the present invention, as shown in fig. 1, when the mildew-prone condition is reached, the indoor return air inlet temperature and the evaporator temperature are detected while the indoor fan is operating at a first rotational speed;
judging whether the difference value between the indoor return air inlet temperature and the evaporator temperature is less than or equal to a preset temperature difference;
if yes, the indoor fan is controlled to be switched to the second rotating speed to operate for the preset operation time.
Further, as shown in fig. 1, when the mildew-prone condition is reached, the indoor return air inlet temperature and the evaporator temperature are detected once at preset intervals, and it is determined whether the difference between the currently detected indoor return air inlet temperature and the evaporator temperature is less than or equal to the preset temperature difference.
After the mildew-producing condition is reached, the indoor return air inlet temperature and the evaporator temperature are repeatedly detected, the indoor return air inlet temperature and the evaporator temperature can be timely obtained, in the process of detecting the indoor return air inlet temperature and the evaporator temperature each time, the evaporator temperature gradually rises and is gradually close to the indoor return air inlet temperature, and when the indoor return air inlet temperature and the evaporator temperature are smaller than or equal to the preset temperature difference, the indoor fan is converted from the first rotating speed to the second rotating speed. Through reducing the rotational speed of indoor fan, make and blow to indoor wind and reduce, promote indoor personnel's travelling comfort to reduce the energy consumption of indoor fan, reduced the production of indoor fan noise.
In some embodiments of the present invention, after the opening of the air deflector is controlled, the air deflector is controlled to swing cyclically at intervals between different opening angles.
The air deflector swings circularly at intervals, namely stays at different opening angle positions for a period of time and swings to another opening angle position. After the air deflector is opened, the indoor fan can blow the air flow and the water vapor of the evaporator to the indoor, and the indoor unit of the air conditioner is prevented from generating condensation near the evaporator. The air guide plates are controlled to swing at intervals between different opening angles, condensation at different air duct positions can be evaporated in a centralized mode through the air guide plates swinging at intervals, and the temperatures at different positions of the air duct are close to the temperature of an indoor air return inlet in sequence, so that the whole air duct can be dried and mildewproof in a large area.
In other embodiments of the present invention, after the opening of the air deflector is controlled, the air deflector is controlled to continuously and cyclically swing between different opening angles.
The circulating swing air deflector uniformly evaporates condensation at different air duct positions, makes the temperatures at different positions of the air duct more uniform and gradually approaches the temperature of the indoor air return inlet, and accordingly realizes drying and mildew prevention of the whole air duct in a large area.
In some embodiments of the present invention, when a shutdown signal is received in the dehumidification mode and the refrigeration mode, it is determined whether the indoor environment is in a user-off state;
if so, the indoor return air inlet temperature and the evaporator temperature are detected.
The air conditioner detects whether the indoor air conditioner leaves for the user by using the sensor, does not detect the temperature of the indoor air return inlet and the temperature of the evaporator when the air conditioner is not in the user leaving state, does not operate the indoor fan, and can prevent the indoor fan from blowing air to the indoor user to cause discomfort. The evaporator temperature naturally returns to the indoor temperature and needs a certain time, whether the indoor environment is in a user leaving state or not is continuously detected in the time, the indoor return air inlet temperature and the evaporator temperature are detected when the indoor user leaving state is achieved, the indoor fan is controlled to operate when the indoor return air inlet temperature and the evaporator temperature reach the mildew-prone condition and the mildew-prone condition is not reached according to the difference value of the indoor return air inlet temperature and the evaporator temperature, the evaporator can be dried in time and mildew-proof, and the user leaves at the moment, and the user cannot be influenced by the operation of the indoor fan.
In some embodiments of the invention, after the air deflector is controlled to be opened and the indoor fan is controlled to operate, a signal for entering the mildew-proof mode is sent out through at least one of voice, light information, a display screen and an intelligent APP.
Because the aviation baffle is opened and the air conditioner compressor has been shut down when indoor fan moves, the user probably does not know the purpose that indoor fan still opened, for avoiding the user puzzlement, sends the operation information that gets into mould proof mode signal messenger user in time and know the air conditioner through at least one in pronunciation, light information, display screen and the intelligence APP.
In some embodiments of the present invention, the first rotation speed is a maximum rotation speed of the indoor fan, and the second rotation speed is a minimum rotation speed of the indoor fan.
The indoor fan runs at the highest rotating speed, the evaporation and drying of water vapor of the evaporator can be accelerated, and the temperature of the evaporator and the temperature of the indoor air return inlet are accelerated to be gradually close to each other. The indoor fan runs at the lowest rotating speed, so that the generation of noise of the indoor fan can be reduced, the indoor noise is reduced, and better experience is provided for indoor users.
In addition, the first rotating speed and the second rotating speed can be other rotating speeds except the highest rotating speed and the lowest rotating speed, and the first rotating speed and the second rotating speed can meet the good steam evaporation effect of the evaporator.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean 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, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. An air conditioner mildew-proof control method is characterized by comprising the following steps:
detecting whether a shutdown signal is received in a dehumidification mode and a refrigeration mode;
if yes, detecting the indoor return air inlet temperature and the evaporator temperature;
judging whether the indoor air return inlet temperature and the evaporator temperature reach the mildew-prone condition or not according to the difference value;
if so, controlling to open the air deflector and controlling the indoor fan to operate at a first rotating speed;
if not, the air deflector is controlled to be opened, and the indoor fan is controlled to operate at a second rotating speed, wherein the second rotating speed is smaller than the first rotating speed.
2. The air conditioner mildew-proof control method according to claim 1, wherein the judging whether the mildew-prone condition is reached according to the difference between the indoor return air inlet temperature and the evaporator temperature comprises:
calculating the difference value between the indoor return air inlet temperature and the evaporator temperature;
judging whether the difference value between the indoor return air inlet temperature and the evaporator temperature is greater than a preset temperature difference or not;
if yes, judging that the mildew-prone condition is achieved;
if not, judging that the mildew-prone condition is not reached.
3. The air conditioner mildew control method of claim 1, wherein when the mildew-prone condition is not reached, the indoor fan is controlled to operate at the second rotation speed for a preset operation time and then is stopped.
4. The air conditioner mildew control method of claim 1, wherein when the mildew-prone condition is reached, the indoor return air inlet temperature and the evaporator temperature are detected while the indoor fan is operated at a first rotation speed;
judging whether the difference value between the indoor return air inlet temperature and the evaporator temperature is less than or equal to the preset temperature difference;
and if so, controlling the indoor fan to operate at the second rotating speed for a preset operation time.
5. The method as claimed in claim 4, wherein the indoor return air inlet temperature and the evaporator temperature are detected once every a predetermined interval time when the condition of easy mildew formation is reached, and it is determined whether a difference between the indoor return air inlet temperature and the evaporator temperature detected at the time is less than or equal to the predetermined temperature difference.
6. The air conditioner mildew-proof control method according to claim 1, wherein after the air deflector is controlled to be opened, the air deflector is controlled to circularly swing at intervals between different opening angles.
7. The air conditioner mildew-proof control method of claim 1, wherein after the air deflector is controlled to be opened, the air deflector is controlled to continuously and circularly swing between different opening angles.
8. The air conditioner mildew control method according to claim 1, wherein when the shutdown signal is received in the dehumidification mode and the cooling mode, whether the indoor environment is in a user leaving state is judged;
and if so, detecting the indoor return air inlet temperature and the evaporator temperature.
9. The air conditioner mildew-proof control method of claim 1, wherein after the air deflector is controlled to be turned on and the indoor fan is controlled to operate, a mildew-proof mode entering signal is sent out through at least one of voice, light information, a display screen and an intelligent APP.
10. The mold prevention control method of an air conditioner according to claim 1, wherein the first rotation speed is a maximum rotation speed of the indoor fan, and the second rotation speed is a minimum rotation speed of the indoor fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111276639.9A CN114198888A (en) | 2021-10-29 | 2021-10-29 | Mildew-proof control method for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111276639.9A CN114198888A (en) | 2021-10-29 | 2021-10-29 | Mildew-proof control method for air conditioner |
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| CN114198888A true CN114198888A (en) | 2022-03-18 |
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| CN202111276639.9A Withdrawn CN114198888A (en) | 2021-10-29 | 2021-10-29 | Mildew-proof control method for air conditioner |
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| CN112762528A (en) * | 2020-12-28 | 2021-05-07 | 格力电器（芜湖）有限公司 | Mildew-proof method and device for dehumidifier |
| CN113302434A (en) * | 2019-01-15 | 2021-08-24 | 三星电子株式会社 | Air conditioner and control method thereof |
| CN113551366A (en) * | 2021-07-30 | 2021-10-26 | 珠海格力电器股份有限公司 | Control method of air conditioner and air conditioner |
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2021
- 2021-10-29 CN CN202111276639.9A patent/CN114198888A/en not_active Withdrawn
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10311587A (en) * | 1997-05-13 | 1998-11-24 | Fujitsu General Ltd | Control method of air-conditioning equipment |
| US20010023593A1 (en) * | 2000-03-06 | 2001-09-27 | Matsushita Electric Industrial Co., Ltd. | Air conditioner and method for controlling air conditioner |
| CN101256018A (en) * | 2007-08-31 | 2008-09-03 | 宁波奥克斯空调有限公司 | Air conditioner control method for automatically drying evaporator |
| CN104842748A (en) * | 2015-05-20 | 2015-08-19 | 冯旋宇 | Vehicle-mounted air conditioner dehumidifying system and dehumidifying method |
| CN109506336A (en) * | 2018-11-19 | 2019-03-22 | 珠海格力电器股份有限公司 | A kind of air conditioning control method, device, storage medium and air-conditioning |
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| CN113551366A (en) * | 2021-07-30 | 2021-10-26 | 珠海格力电器股份有限公司 | Control method of air conditioner and air conditioner |
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