CN113587357A - Air conditioner cleaning method - Google Patents
Air conditioner cleaning method Download PDFInfo
- Publication number
- CN113587357A CN113587357A CN202110798097.5A CN202110798097A CN113587357A CN 113587357 A CN113587357 A CN 113587357A CN 202110798097 A CN202110798097 A CN 202110798097A CN 113587357 A CN113587357 A CN 113587357A
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- Prior art keywords
- air conditioner
- indoor fan
- temperature
- heat exchanger
- indoor
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Classifications
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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
- F24F11/32—Responding to malfunctions or emergencies
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
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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
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/873—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling refrigerant heaters
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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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- 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 cleaning method, which preferentially adopts an electric heating mode to carry out high-temperature sterilization on an indoor heat exchanger of an air conditioner, and starts an indoor fan system and a compressor system of the air conditioner in real time to enter a heating mode according to a sterilization target temperature, and the temperature of the indoor heat exchanger is kept in an effective, safe and optimal sterilization temperature range by comparing the surface temperature of the indoor heat exchanger with a set safe temperature threshold and controlling the reverse running rotating speed of the indoor fan according to a comparison result. When the sterilization efficiency is improved, the system pressure can be controlled, the failure of electric heating dry burning is avoided, and the reliability of the air conditioner is ensured.
Description
Technical Field
The invention relates to the field of domestic electric appliances, in particular to the technical field of air conditioners, and particularly relates to an air conditioner cleaning method.
Technical Field
With the improvement of health consciousness of people, the health demand of people on air conditioners is higher and higher. However, in the long-term use of the air conditioner, more and more bacterial viruses and the like are accumulated on the heat exchanger of the indoor unit, most of the bacterial viruses are not high-temperature resistant, for example, new coronavirus which is abused worldwide in 2020, and according to related scientific data, the new coronavirus can be killed in an environment of 56 ℃ for 30 minutes. Therefore, the air conditioner can be cleaned by killing bacteria at a high temperature.
In the prior art, some air conditioners are sterilized by adopting devices such as ultraviolet rays, disinfectant, negative ions and the like, so that the price is much higher than that of a common air conditioner, and the market demand is difficult to meet. Some air conditioners adopt fans and heating systems of the air conditioners for sterilization, but the heating temperature of the air conditioners is limited by system pressure, a heat exchanger is difficult to maintain in a high-temperature state for a long time, and the sterilization is not thorough.
Disclosure of Invention
The present invention is directed to overcome the above-mentioned shortcomings in the prior art, and provides a method for cleaning an air conditioner, in which an electrical heating method is preferably used to perform high-temperature sterilization on a heat exchanger, then a judgment is made according to a sterilization target temperature, an air conditioning system is turned on to enter a heating mode, the temperature of an indoor heat exchanger is kept within an optimal sterilization temperature range by adjusting relevant parameters of the air conditioning system, and the reliability of the air conditioner is also improved.
In order to achieve the technical effects, the technical scheme adopted by the invention comprises the following steps:
s1: sending out a high-temperature sterilization and cleaning instruction of the air conditioner;
s2: the air conditioner receives a high-temperature sterilization cleaning instruction, the swing blade of the indoor unit is opened by an angle A, an electric heating device positioned below the indoor heat exchanger is started, and the surface of the indoor heat exchanger is heated by utilizing natural convection;
s3: acquiring the surface temperature Tc of a heat exchanger of an indoor unit and the temperature of an electric heating temperature controller;
s4, when the temperature of the electric heating temperature controller is higher than the threshold B, the indoor fan is started to run reversely, so that air reversely flows through the electric heating device (the electric heating dry burning is avoided to be invalid), and the initial reverse rotation speed of the indoor fan is C0;
s5, when the surface temperature Tc of the heat exchanger of the indoor unit is smaller than a threshold value D, starting the compressor of the air conditioning system and entering a heating mode;
s6: controlling the real-time rotating speed C of the indoor fan in reverse operation to keep the surface temperature Tc of the heat exchanger of the indoor unit equal to or less than Tc and less than F;
and S7, when the T is more than or equal to D and lasts for J minutes, turning off the electric heating device, the indoor fan and the compressor, closing the swing page of the indoor unit, and ending the cleaning process.
According to an embodiment of the present invention, the swing blade angle a in step S2 ranges from 1 to 90 degrees.
According to an embodiment of the present invention, the value range of the threshold B in step S4 is 85-105 ℃.
According to an embodiment of the present invention, in step S4, the indoor fan reverse rotation initial rotation speed C0 is associated with the first obtained electrically heated temperature controller temperature T0 greater than the threshold B, where C0= a × T0, and a is a rotation speed coefficient, and a value range is 5-20.
According to an embodiment of the present invention, the specific method for controlling the indoor fan to reversely rotate at the real-time rotation speed C in step S6 so that the surface temperature Tc of the indoor unit heat exchanger keeps D less than or equal to Tc < F is as follows:
when Tc is less than D and lasts for G minutes, the indoor fan operates reversely, the real-time rotating speed C is reduced by Y per minute
When D is less than or equal to Tc and less than E, the real-time rotating speed C of the indoor fan in the reverse operation is kept unchanged;
when Tc is more than or equal to E and lasts for H minutes, the indoor fan reversely runs, and the real-time rotating speed C is increased by Z per minute;
when Tc is more than or equal to F, the compressor is stopped;
when Tc < D, restarting the compressor and entering a heating mode;
wherein D < E < F.
According to one embodiment of the invention, the threshold D is generally 55-58 ℃, preferably 56 ℃;
according to one embodiment of the invention, the threshold E is generally 59-62 ℃, preferably 62 ℃;
according to one embodiment of the invention, the threshold F is generally 64-66 ℃ and preferably 64 ℃;
according to one embodiment of the invention, G is generally taken for 1 to 5 minutes, preferably for 2 minutes;
according to one embodiment of the invention, H is typically taken for 1-3 minutes, preferably 0.5 minutes;
according to one embodiment of the invention, Y is generally 1-50r, preferably 10 r;
according to one embodiment of the invention, Z is generally between 1 and 50r, preferably 10 r;
according to one embodiment of the invention, time J is typically between 5 and 60 minutes, preferably 30 minutes.
According to an embodiment of the present invention, the steps S4 and S5 may be performed sequentially or simultaneously.
Step 6 the principle of the invention is that: because the indoor fan rotates reversely, the air flow velocity of the air side of the indoor heat exchanger is determined, namely the reverse rotation velocity is higher, the air flow velocity is higher, the heat exchange quantity on the surface of the indoor heat exchanger is higher, more heat is taken away, the surface temperature of the indoor heat exchanger is reduced, and vice versa. By comparing the surface temperature of the indoor heat exchanger with a set safe temperature threshold value and controlling the reverse running rotating speed of the indoor fan according to the comparison result, the heat exchanger can gradually run to an effective and safe sterilization temperature range.
Compared with the prior art, the invention has the following beneficial effects: when the air conditioner carries out high-temperature sterilization and self-cleaning, the surface of the heat exchanger is sterilized at high temperature by the electric heater, the heat pump system of the air conditioner carries out auxiliary heating, and the reverse rotation control of the fan is utilized, so that the surface temperature of the heat exchanger can reach the effective sterilization temperature, the system pressure can be controlled, the failure of electric heating dry burning is avoided, and the reliability of the air conditioner is ensured.
Drawings
Fig. 1 is a schematic flow chart of a cleaning method of an air conditioner according to an embodiment of the present invention.
Detailed Description
The invention will be further elucidated and described with reference to the embodiments of the invention described hereinafter.
Example one
The invention will be further elucidated and described with reference to the embodiments of the invention described hereinafter.
The invention discloses an air conditioner cleaning method, which comprises the following steps:
step 1: sending out a high-temperature sterilization and cleaning instruction of the air conditioner.
Step 2: the air conditioner receives an instruction, the swing blade of the indoor unit is opened by an angle A, an electric heating device positioned below the indoor heat exchanger is started, and the surface of the indoor heat exchanger is heated by utilizing natural convection;
specifically, the value range of the swing blade angle A is 1-90 degrees.
And step 3: and acquiring the surface temperature Tc of the heat exchanger of the indoor unit and the temperature of the electric heating temperature controller.
And 4, step 4: when the temperature of the electric heating temperature controller is higher than a threshold value B, the indoor fan is started to run reversely, so that air reversely flows through the electric heating device (the electric heating dry burning failure is avoided), and the initial reverse rotation speed of the indoor fan is C0;
specifically, the value range of the threshold B is 85-105 ℃;
specifically, the indoor fan reverse rotation initial rotation speed C0 is associated with the first acquired temperature T0 of the electric heating temperature controller greater than the threshold B, C0= a × T0, and a is a rotation speed coefficient and ranges from 5 to 20.
And 5: and when the surface temperature Tc of the heat exchanger of the indoor unit is smaller than the threshold value D, starting the compressor of the air-conditioning system and entering a heating mode.
Step 6: controlling the real-time rotating speed C of the indoor fan in reverse operation to keep the surface temperature Tc of the heat exchanger of the indoor unit equal to or less than Tc and less than F;
specifically, when Tc is less than D and lasts for G minutes, the indoor fan operates reversely, the real-time rotating speed C is reduced by Y per minute
When D is less than or equal to Tc and less than E, the real-time rotating speed C of the indoor fan in the reverse operation is kept unchanged;
when Tc is more than or equal to E and lasts for H minutes, the indoor fan reversely runs, and the real-time rotating speed C is increased by Z per minute;
when Tc is more than or equal to F, the compressor is stopped;
when Tc < D, restarting the compressor and entering a heating mode;
wherein D < E < F;
more specifically, the threshold D is generally 55-58 ℃ and preferably 56 ℃;
more specifically, the threshold value E is generally 59-62 ℃, preferably 62 ℃;
more specifically, the threshold value F is generally 64 to 66 ℃, preferably 64 ℃;
more specifically, G is generally taken for 1 to 5 minutes, preferably 2 minutes;
more specifically, H is generally taken for 1 to 3 minutes, preferably 0.5 minute;
more specifically, Y is generally 1 to 50r, preferably 10 r;
more specifically, Z is generally 1 to 50r, preferably 10 r.
Because the indoor fan rotates reversely, the air flow velocity of the air side of the indoor heat exchanger is determined, namely the reverse rotation velocity is higher, the air flow velocity is higher, the heat exchange quantity on the surface of the indoor heat exchanger is higher, more heat is taken away, the surface temperature of the indoor heat exchanger is reduced, and vice versa. By comparing the surface temperature of the indoor heat exchanger with a set safe temperature threshold value and controlling the reverse running rotating speed of the indoor fan according to the comparison result, the heat exchanger can gradually run to an effective and safe sterilization temperature range again.
And 7, when Tc is more than or equal to D and the duration J is up, closing the electric heating device, the indoor fan and the compressor, closing the swing page of the indoor unit, and finishing the cleaning process.
Specifically, J is generally selected from 5 to 60 minutes, preferably 30 minutes;
the above steps S4 and S5 may be executed sequentially or simultaneously.
It can be understood that, based on the heating principle of the air conditioner, when the compressor is started or shut down, the outdoor fans are simultaneously started or shut down.
It should be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principle of the present invention, and the claimed technical solution of the present invention includes but is not limited to the above embodiments, and those skilled in the art can make various equivalent substitutions, modifications, improvements according to the above description of the present invention without departing from the spirit and spirit of the present invention, which are within the protection scope of the spirit of the present invention.
Claims (9)
1. An air conditioner cleaning method, characterized in that the method comprises the following steps:
s1, sending a high-temperature sterilization and cleaning instruction of an air conditioner;
s2, the air conditioner receives an instruction, the swing blade of the indoor unit is opened, an electric heating device located below the indoor heat exchanger is started, and the surface of the indoor heat exchanger is heated by utilizing natural convection;
s3, acquiring the surface temperature Tc of the heat exchanger of the indoor unit and the temperature of the electric heating temperature controller;
s4, when the temperature of the electric heating temperature controller is higher than a threshold value B, the indoor fan is started to run reversely, so that air reversely flows through the electric heating device, and the initial reverse rotation speed of the indoor fan is C0;
s5, when the surface temperature Tc of the heat exchanger of the indoor unit is smaller than a threshold value D, starting a compressor of the air conditioning system, and entering a heating mode;
s6, controlling the indoor fan to reversely rotate at a real-time rotating speed C, so that the surface temperature Tc of the indoor unit heat exchanger keeps D less than or equal to Tc < F;
and S7, when Tc is more than or equal to D and the duration J is up, closing the electric heating, the indoor fan and the compressor, closing the swing page of the indoor unit, and ending the cleaning process.
2. An air conditioner cleaning method as claimed in claim 1, wherein said threshold B of step S4 is 85-105 ℃.
3. The method as claimed in claim 1, wherein the indoor fan reverse rotation initial rotation speed C0 in step S4 is associated with the first obtained temperature T0 of the electrically heated thermostat greater than the threshold B, C0= a x T0, a is a rotation speed coefficient, and a ranges from 5 to 20.
4. The method as claimed in claim 1, wherein the step S6 of controlling the real-time rotating speed C of the indoor fan in reverse operation to maintain the surface temperature Tc of the indoor unit heat exchanger at D ≤ Tc < F comprises the following steps:
when Tc is less than D and lasts for G minutes, the indoor fan operates reversely, the real-time rotating speed C is reduced by Y per minute
When D is less than or equal to Tc and less than E, the real-time rotating speed C of the indoor fan in the reverse operation is kept unchanged;
when Tc is more than or equal to E and lasts for H minutes, the indoor fan reversely runs, and the real-time rotating speed C is increased by Z per minute;
when Tc is more than or equal to F, the compressor is stopped;
when Tc < D, restarting the compressor and entering a heating mode;
wherein D < E < F.
5. An air conditioner cleaning method as claimed in claim 4, wherein:
the threshold value D is 55-58 ℃;
the threshold E is 59-62 ℃;
the threshold value F is 64-66 ℃;
the time G is 1-5 minutes;
the time H is 1-3 minutes;
the real-time rotating speed C of the indoor fan in the reverse operation is reduced by 1-50r per minute;
the real-time rotating speed C of the indoor fan in the reverse operation is increased by 1-50r per minute.
6. An air conditioner cleaning method as claimed in claim 5, wherein:
the threshold D is 56 ℃;
the threshold E is 62 ℃;
the threshold value F is 64 ℃;
the time G is 2 minutes;
the time H is 0.5 minute;
the real-time rotating speed C of the indoor fan in the reverse operation is reduced by a value Y of 10r per minute;
and the real-time rotating speed C of the indoor fan in the reverse operation is increased by 10r per minute.
7. An air conditioner cleaning method as claimed in claim 1, wherein said time J of step S7 is 5-60 minutes.
8. An air conditioner cleaning method as claimed in claim 7, wherein said time J of step S7 is 30 minutes.
9. An air conditioner cleaning method as claimed in any one of claims 1 to 8, wherein the steps S4 and S5 are performed sequentially or simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110798097.5A CN113587357A (en) | 2021-07-15 | 2021-07-15 | Air conditioner cleaning method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110798097.5A CN113587357A (en) | 2021-07-15 | 2021-07-15 | Air conditioner cleaning method |
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| CN113587357A true CN113587357A (en) | 2021-11-02 |
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| CN202110798097.5A Pending CN113587357A (en) | 2021-07-15 | 2021-07-15 | Air conditioner cleaning method |
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Citations (9)
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| JP2002067668A (en) * | 2000-08-29 | 2002-03-08 | Denso Corp | Air conditioning device |
| CN101033880A (en) * | 2007-03-30 | 2007-09-12 | 广州松下空调器有限公司 | Control method of air-conditioning |
| CN104791951A (en) * | 2015-04-10 | 2015-07-22 | 广东美的制冷设备有限公司 | Method for controlling air conditioner |
| CN111140905A (en) * | 2020-03-08 | 2020-05-12 | 陈则韶 | High-temperature heat virus-killing heater |
| CN111336659A (en) * | 2020-03-13 | 2020-06-26 | 广东美的制冷设备有限公司 | Air conditioner, method of sterilizing the same, and computer-readable storage medium |
| CN111397119A (en) * | 2020-03-20 | 2020-07-10 | 青岛海信日立空调系统有限公司 | Multi-split air conditioner |
| CN111692730A (en) * | 2020-03-13 | 2020-09-22 | 广东美的制冷设备有限公司 | Air conditioner and sterilization control method thereof |
| CN112128917A (en) * | 2020-08-28 | 2020-12-25 | 青岛海尔空调器有限总公司 | Control method and control device for air conditioner and air conditioner |
| CN112665024A (en) * | 2020-12-14 | 2021-04-16 | 四川长虹空调有限公司 | Sterilizing air conditioner and air conditioner sterilization control method |
-
2021
- 2021-07-15 CN CN202110798097.5A patent/CN113587357A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002067668A (en) * | 2000-08-29 | 2002-03-08 | Denso Corp | Air conditioning device |
| CN101033880A (en) * | 2007-03-30 | 2007-09-12 | 广州松下空调器有限公司 | Control method of air-conditioning |
| CN104791951A (en) * | 2015-04-10 | 2015-07-22 | 广东美的制冷设备有限公司 | Method for controlling air conditioner |
| CN111140905A (en) * | 2020-03-08 | 2020-05-12 | 陈则韶 | High-temperature heat virus-killing heater |
| CN111336659A (en) * | 2020-03-13 | 2020-06-26 | 广东美的制冷设备有限公司 | Air conditioner, method of sterilizing the same, and computer-readable storage medium |
| CN111692730A (en) * | 2020-03-13 | 2020-09-22 | 广东美的制冷设备有限公司 | Air conditioner and sterilization control method thereof |
| CN111397119A (en) * | 2020-03-20 | 2020-07-10 | 青岛海信日立空调系统有限公司 | Multi-split air conditioner |
| CN112128917A (en) * | 2020-08-28 | 2020-12-25 | 青岛海尔空调器有限总公司 | Control method and control device for air conditioner and air conditioner |
| CN112665024A (en) * | 2020-12-14 | 2021-04-16 | 四川长虹空调有限公司 | Sterilizing air conditioner and air conditioner sterilization control method |
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Application publication date: 20211102 |