CN112254275A - Self-cleaning control method for outdoor unit of air conditioner - Google Patents
Self-cleaning control method for outdoor unit of air conditioner Download PDFInfo
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- CN112254275A CN112254275A CN202011082179.1A CN202011082179A CN112254275A CN 112254275 A CN112254275 A CN 112254275A CN 202011082179 A CN202011082179 A CN 202011082179A CN 112254275 A CN112254275 A CN 112254275A
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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
- F24F11/64—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
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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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
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
- F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
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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
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Thermal Sciences (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention relates to the technical field of air conditioners, in particular to a self-cleaning control method for an air conditioner outdoor unit, which comprises the steps of controlling the air conditioner to enter a heating mode; in the heating mode, the running frequency of the compressor is controlled to frost the outdoor heat exchanger; and when the temperature of the outdoor heat exchanger is lower than a first preset temperature and lasts for a first preset time, defrosting operation is carried out. On the basis of the traditional air conditioner, redundant parts are not needed to be added, and water flow formed in the defrosting process is enabled to flush the surface of the outdoor heat exchanger through the frosting-defrosting process of the outdoor heat exchanger, so that impurities and bacteria attached to the surface of the outdoor heat exchanger are taken away, and the self-cleaning effect of the outdoor heat exchanger is realized; in addition, different defrosting operations are selected according to the current outdoor environment temperature, so that the use is more flexible, and the energy consumption is reduced.
Description
Technical Field
The invention relates to the technical field of air conditioners, in particular to a self-cleaning control method for an air conditioner outdoor unit.
Background
The air conditioner runs for a long time, and the outdoor heat exchanger is difficult to avoid having impurity and bacterium, and these impurity are attached to on the outdoor heat exchanger, can reduce the heat transfer performance of heat exchanger on the one hand, lead to the air conditioner performance to descend, and then influence user's use and experience.
Disclosure of Invention
The invention aims to provide a self-cleaning control method of an air conditioner outdoor unit, which can realize self-cleaning of the air conditioner outdoor unit and remove impurities attached to the surface of an outdoor heat exchanger without adding parts.
In order to achieve the above object, the present invention provides a self-cleaning control method for an outdoor unit of an air conditioner, the method comprising controlling the air conditioner to enter a heating mode; in the heating mode, controlling the running frequency of the compressor to frost the outdoor heat exchanger; when the temperature of the outdoor heat exchanger is lower than a first preset temperature and lasts for a first preset time, defrosting operation is carried out; before the defrosting operation is carried out, acquiring the current outdoor environment temperature:
if the current outdoor environment temperature T is less than or equal to 10 ℃, controlling the air conditioner to enter a defrosting mode;
if the current outdoor environment temperature is more than or equal to 20 ℃ and T is more than 10 ℃, controlling the outdoor fan to operate;
and if the current outdoor environment temperature T is more than 20 ℃, controlling the air conditioner to stop.
Therefore, on the basis of the traditional air conditioner, redundant parts are not needed to be added, and water flow formed in the defrosting process is enabled to flush the surface of the outdoor heat exchanger through the frosting-defrosting process of the outdoor heat exchanger, so that impurities and bacteria attached to the surface of the outdoor heat exchanger are taken away, and the self-cleaning effect of the outdoor heat exchanger is realized; in addition, different defrosting operations are selected according to the current outdoor environment temperature, so that the use is more flexible, and the energy consumption is reduced.
Optionally, in order to stably operate the compressor and avoid damage to the compressor during the self-cleaning process, in the heating mode, the current outdoor environment temperature is obtained, and the compressor is controlled to operate at the compressor operation frequency corresponding to the current outdoor environment temperature in the heating mode according to the corresponding relationship between the compressor operation frequency and the outdoor environment temperature, so that the compressor is kept in a stable operation state, the phenomenon of over-high temperature or liquid impact of the compressor is prevented, and the working stability and the service life of the compressor are ensured.
Optionally, in the heating mode, the relationship between the current outdoor ambient temperature T and the compressor operating frequency f is as follows:
when the outdoor environment temperature is more than or equal to 25 ℃ and T is less than 35 ℃: f is more than or equal to 45HZ and less than or equal to 60 HZ;
when the outdoor environment temperature is more than 15 ℃ and less than T and less than 25 ℃: f is more than or equal to 30HZ and less than or equal to 50 HZ;
when the outdoor environment temperature is more than 0 ℃ and T is less than or equal to 15 ℃: f is more than or equal to 15HZ and less than 30 HZ.
Optionally, when the air conditioner is controlled to enter a heating mode, the outdoor fan is controlled to stop running, and the air flowing speed around the outdoor heat exchanger is reduced, so that the surface frosting efficiency of the outdoor heat exchanger is higher.
Optionally, the indoor fan operation mode includes a breeze mode and a high wind mode.
Optionally, in the heating mode, obtaining a current indoor heat exchanger temperature:
if the temperature T of the current indoor heat exchanger is less than or equal to 10 ℃, controlling the indoor fan to stop running;
if the temperature of the current indoor heat exchanger is more than or equal to 50 ℃ and T is more than 10 ℃, controlling the indoor fan to run in breeze;
if the temperature T of the current indoor heat exchanger is more than 50 ℃, controlling the indoor fan to run in high wind;
so as to keep the indoor heat exchanger in a stable operation temperature range and reduce energy consumption.
Optionally, the operation mode of the outdoor fan comprises a breeze mode and a high-wind mode, when the current outdoor environment temperature is more than or equal to 20 ℃ and more than or equal to T and more than 10 ℃ and the defrosting operation is performed, the outdoor fan is controlled to operate in the high-wind mode, the defrosting efficiency of the surface of the outdoor heat exchanger is improved, and meanwhile, water flow formed by defrosting is blown by the outdoor fan, so that impurities and bacteria on the surface of the outdoor heat exchanger are quickly taken away by the water flow.
Optionally, the air deflector of the indoor unit is controlled to be in the air guiding position in the refrigeration mode in the self-cleaning process, and the ventilation state of the indoor heat exchanger is kept by matching with the indoor fan, so that the overhigh temperature of the indoor heat exchanger is avoided.
Drawings
Fig. 1 is a flowchart of a self-cleaning control method of an outdoor unit of an air conditioner according to an embodiment of the present invention;
fig. 2 is a schematic view illustrating operation states of components of the outdoor unit in a self-cleaning mode after a cooling mode according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating operation states of components of the outdoor unit in a self-cleaning mode after a standby mode according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating another operation of the components of the outdoor unit in a self-cleaning mode after a standby mode according to an embodiment of the present invention;
fig. 5 is a schematic view illustrating operation states of components of a heating mode to an outdoor unit self-cleaning mode according to an embodiment of the present invention;
fig. 6 is a schematic diagram illustrating operation states of components of a heating mode to an outdoor unit self-cleaning mode according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Referring to fig. 1, an embodiment of the present invention provides a self-cleaning control method for an outdoor unit of an air conditioner, the method including:
s01, controlling the air conditioner to enter a heating mode;
in the heating mode, the running frequency of the compressor is controlled to frost the outdoor heat exchanger;
s02, judging whether the temperature of the outdoor heat exchanger is lower than a first preset temperature or not and continuing for a first preset time;
s03, when the temperature of the outdoor heat exchanger is lower than a first preset temperature and lasts for a first preset time, acquiring the current outdoor environment temperature;
s04, defrosting operation:
if the current outdoor environment temperature T is less than or equal to 10 ℃, controlling the air conditioner to enter a defrosting mode, and defrosting through a refrigeration compressor;
if the current outdoor environment temperature is more than or equal to 20 ℃ and T is more than 10 ℃, controlling an outdoor fan to operate, and defrosting by heating high wind;
and if the current outdoor environment temperature T is more than 20 ℃, controlling the air conditioner to stop, and defrosting through natural air.
On the basis of the traditional air conditioner, redundant parts are not needed to be added, and water flow formed in the defrosting process is enabled to flush the surface of the outdoor heat exchanger through the frosting-defrosting process of the outdoor heat exchanger, so that impurities and bacteria attached to the surface of the outdoor heat exchanger are taken away, and the self-cleaning effect of the outdoor heat exchanger is realized; in addition, different defrosting operations are selected according to the current outdoor environment temperature, so that the use is more flexible, and the energy consumption is reduced.
In order to stably operate the compressor and avoid damaging the compressor in the self-cleaning process, the current outdoor environment temperature is obtained in the heating mode, and the compressor is controlled to operate at the compressor operation frequency corresponding to the current outdoor environment temperature in the heating mode according to the corresponding relation between the compressor operation frequency and the outdoor environment temperature, so that the compressor is kept in a stable operation state, the phenomenon of overhigh temperature or liquid impact of the compressor is prevented, and the working stability and the service life of the compressor are ensured.
Specifically, in the heating mode, the current outdoor ambient temperature T is related to the compressor operating frequency f as follows:
when the outdoor environment temperature is more than or equal to 25 ℃ and T is less than 35 ℃: f is more than or equal to 45HZ and less than or equal to 60 HZ;
when the outdoor environment temperature is more than 15 ℃ and less than T and less than 25 ℃: f is more than or equal to 30HZ and less than or equal to 50 HZ;
when the outdoor environment temperature is more than 0 ℃ and T is less than or equal to 15 ℃: f is more than or equal to 15HZ and less than 30 HZ.
Further, in an embodiment of the present invention, the air conditioner is controlled to enter the heating mode and the outdoor fan is controlled to stop operating, so as to reduce the air flow speed around the outdoor heat exchanger, thereby improving the efficiency of frosting the surface of the outdoor heat exchanger.
In the air conditioner in one embodiment of the invention, the operation modes of the indoor fan at least comprise a breeze mode and a high wind mode so as to adapt to the air volume in different use environments.
In the heating mode, the current indoor heat exchanger temperature is acquired:
if the temperature T of the current indoor heat exchanger is less than 10 ℃, controlling the indoor fan to stop running, and reducing energy consumption;
if the temperature T of the current indoor heat exchanger is more than or equal to 10 ℃ and less than 50 ℃, controlling the indoor fan to run in breeze to keep the indoor heat exchanger at a lower temperature;
if the temperature T of the indoor heat exchanger is higher than 50 ℃, the high-wind operation of the indoor fan is controlled so as to reduce the temperature of the indoor heat exchanger and avoid the damage of the indoor heat exchanger due to overhigh temperature.
Further, in order to improve the defrosting efficiency and the cleaning effect, the operation mode of the outdoor fan in the embodiment includes a breeze mode and a high wind mode, when the current outdoor environment temperature is more than or equal to 20 ℃ and more than or equal to T and is in defrosting operation, the outdoor fan is controlled to operate in the high wind mode, so that a strong airflow is formed to drive the water flow to flow, and impurities and bacteria on the surface of the outdoor heat exchanger are taken away by the water flow.
Furthermore, an air deflector of the indoor unit is controlled to be in an air guiding position in a refrigeration mode in the self-cleaning process, and the ventilation state of the indoor heat exchanger is kept by matching with an indoor fan, so that the overhigh temperature of the indoor heat exchanger is avoided.
In this embodiment, for better explaining the working states of each component of the air conditioner entering the self-cleaning mode in different operation states based on the above self-cleaning method, please refer to fig. 2-6, the components of the air conditioner operation control of this embodiment include an indoor fan, a compressor, a four-way valve, an Electronic Expansion Valve (EEV) and an outdoor fan; fig. 2 to 6 show the working states of the components when the cooling mode, the standby mode, the heating mode and the blowing mode enter the outdoor unit self-cleaning mode.
Specifically, fig. 2 shows the working states of the components when the refrigeration mode is switched to the outdoor unit self-cleaning mode;
fig. 3 and 4 respectively show the working states of each component when the defrosting process is performed in the high wind mode defrosting of the outdoor fan, the natural air defrosting and the defrosting of the refrigeration compressor when the standby mode is switched to the self-cleaning mode;
fig. 5 and 6 show the working states of the components when the heating mode is switched to the self-cleaning mode, the defrosting process is performed in the high-wind defrosting mode of the outdoor fan, the natural air defrosting mode and the refrigerating compressor defrosting mode, respectively.
In summary, on the basis of the traditional air conditioner, redundant parts are not needed to be added, and water flow formed in the defrosting process is enabled to flush the surface of the outdoor heat exchanger through the frosting-defrosting process of the outdoor heat exchanger, so that impurities and bacteria attached to the surface of the outdoor heat exchanger are taken away, and the self-cleaning effect of the outdoor heat exchanger is realized; in addition, different defrosting operations are selected according to the current outdoor environment temperature, so that the use is more flexible, and the energy consumption is reduced.
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 (8)
1. A self-cleaning control method for an outdoor unit of an air conditioner is characterized by comprising the following steps:
controlling the air conditioner to enter a heating mode;
in the heating mode, controlling the running frequency of the compressor to frost the outdoor heat exchanger;
when the temperature of the outdoor heat exchanger is lower than a first preset temperature and lasts for a first preset time, defrosting operation is carried out;
before the defrosting operation is carried out, acquiring the current outdoor environment temperature:
if the current outdoor environment temperature T is less than or equal to 10 ℃, controlling the air conditioner to enter a defrosting mode;
if the current outdoor environment temperature is more than or equal to 20 ℃ and T is more than 10 ℃, controlling the outdoor fan to operate;
and if the current outdoor environment temperature T is more than 20 ℃, controlling the air conditioner to stop.
2. The outdoor unit self-cleaning control method of claim 1, wherein in the heating mode, a current outdoor ambient temperature is obtained, and the compressor is controlled to operate at a compressor operating frequency corresponding to the current outdoor ambient temperature in the heating mode according to a correspondence between the compressor operating frequency and the outdoor ambient temperature.
3. The outdoor unit self-cleaning control method of claim 2, wherein in the heating mode, the current outdoor ambient temperature T is related to the compressor operation frequency f as follows:
when the outdoor environment temperature is more than or equal to 25 ℃ and T is less than 35 ℃: f is more than or equal to 45HZ and less than or equal to 60 HZ;
when the outdoor environment temperature is more than 15 ℃ and less than T and less than 25 ℃: f is more than or equal to 30HZ and less than or equal to 50 HZ;
when the outdoor environment temperature is more than 0 ℃ and T is less than or equal to 15 ℃: f is more than or equal to 15HZ and less than 30 HZ.
4. The outdoor unit self-cleaning control method of claim 1, wherein the outdoor fan is controlled to stop operating while the air conditioner is controlled to enter the heating mode.
5. The outdoor unit self-cleaning control method of claim 1, wherein the indoor fan operation modes include a breeze mode and a high wind mode.
6. The outdoor unit self-cleaning control method of claim 5, wherein in the heating mode, a current indoor heat exchanger temperature is obtained:
if the temperature T of the current indoor heat exchanger is less than or equal to 10 ℃, controlling the indoor fan to stop running;
if the temperature of the current indoor heat exchanger is more than or equal to 50 ℃ and T is more than 10 ℃, controlling the indoor fan to run in breeze;
and if the temperature T of the current indoor heat exchanger is more than 50 ℃, controlling the indoor fan to run in high wind.
7. The outdoor unit self-cleaning control method of claim 1, wherein the outdoor fan operation modes include a breeze mode and a high wind mode, and the outdoor fan is controlled to operate in the high wind mode when the current outdoor environment temperature is 20 ℃ ≧ T > 10 ℃ and the defrosting operation is performed.
8. The outdoor unit self-cleaning control method of claim 1, wherein the air guide plate of the indoor unit is controlled to be at the air guide position of the cooling mode during the self-cleaning process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011082179.1A CN112254275A (en) | 2020-10-12 | 2020-10-12 | Self-cleaning control method for outdoor unit of air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011082179.1A CN112254275A (en) | 2020-10-12 | 2020-10-12 | Self-cleaning control method for outdoor unit of air conditioner |
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| CN112254275A true CN112254275A (en) | 2021-01-22 |
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| CN202011082179.1A Pending CN112254275A (en) | 2020-10-12 | 2020-10-12 | Self-cleaning control method for outdoor unit of air conditioner |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113465031A (en) * | 2021-04-29 | 2021-10-01 | 青岛海尔空调器有限总公司 | Air conditioner indoor unit, air conditioner and air conditioner self-cleaning control method |
| CN113531778A (en) * | 2021-07-09 | 2021-10-22 | 青岛海尔空调器有限总公司 | Method for controlling external self-cleaning of outdoor heat exchanger |
| CN113531780A (en) * | 2021-07-09 | 2021-10-22 | 青岛海尔空调器有限总公司 | Method for controlling self-cleaning in pipe of outdoor heat exchanger |
| CN113639411A (en) * | 2021-07-15 | 2021-11-12 | 青岛海尔空调器有限总公司 | Method for controlling external self-cleaning of outdoor heat exchanger |
| CN113654191A (en) * | 2021-07-15 | 2021-11-16 | 青岛海尔空调器有限总公司 | Method for controlling self-cleaning in pipe of outdoor heat exchanger |
| CN113654192A (en) * | 2021-07-15 | 2021-11-16 | 青岛海尔空调器有限总公司 | Method for controlling self-cleaning in pipe of outdoor heat exchanger |
| CN113654196A (en) * | 2021-07-15 | 2021-11-16 | 青岛海尔空调器有限总公司 | Method for controlling self-cleaning in indoor heat exchanger |
| CN114216258A (en) * | 2021-12-02 | 2022-03-22 | 青岛海尔空调器有限总公司 | Method and device for self-cleaning of air conditioner and air conditioner |
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| JP2017116257A (en) * | 2012-07-10 | 2017-06-29 | シャープ株式会社 | Electrical equipment |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113465031A (en) * | 2021-04-29 | 2021-10-01 | 青岛海尔空调器有限总公司 | Air conditioner indoor unit, air conditioner and air conditioner self-cleaning control method |
| CN113531778A (en) * | 2021-07-09 | 2021-10-22 | 青岛海尔空调器有限总公司 | Method for controlling external self-cleaning of outdoor heat exchanger |
| CN113531780A (en) * | 2021-07-09 | 2021-10-22 | 青岛海尔空调器有限总公司 | Method for controlling self-cleaning in pipe of outdoor heat exchanger |
| CN113639411A (en) * | 2021-07-15 | 2021-11-12 | 青岛海尔空调器有限总公司 | Method for controlling external self-cleaning of outdoor heat exchanger |
| CN113654191A (en) * | 2021-07-15 | 2021-11-16 | 青岛海尔空调器有限总公司 | Method for controlling self-cleaning in pipe of outdoor heat exchanger |
| CN113654192A (en) * | 2021-07-15 | 2021-11-16 | 青岛海尔空调器有限总公司 | Method for controlling self-cleaning in pipe of outdoor heat exchanger |
| CN113654196A (en) * | 2021-07-15 | 2021-11-16 | 青岛海尔空调器有限总公司 | Method for controlling self-cleaning in indoor heat exchanger |
| CN114216258A (en) * | 2021-12-02 | 2022-03-22 | 青岛海尔空调器有限总公司 | Method and device for self-cleaning of air conditioner and air conditioner |
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Address after: 266100 No. 151, Zhuzhou Road, Laoshan District, Shandong, Qingdao Applicant after: Hisense Air Conditioning Co.,Ltd. Address before: 266100 No. 151, Zhuzhou Road, Laoshan District, Shandong, Qingdao Applicant before: HISENSE (SHANDONG) AIR-CONDITIONING Co.,Ltd. |
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Application publication date: 20210122 |