CN113531676B - Air conditioner noise reduction control method and air conditioner - Google Patents
Air conditioner noise reduction control method and air conditioner Download PDFInfo
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- CN113531676B CN113531676B CN202110856991.3A CN202110856991A CN113531676B CN 113531676 B CN113531676 B CN 113531676B CN 202110856991 A CN202110856991 A CN 202110856991A CN 113531676 B CN113531676 B CN 113531676B
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- compressor
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- frequency
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
- F24F1/08—Compressors specially adapted for separate outdoor units
- F24F1/12—Vibration or noise prevention 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
- F24F11/70—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
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/021—Inverters therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/11—Fan speed control
- F25B2600/111—Fan speed control of condenser fans
Abstract
The invention belongs to the field of air conditioners, and particularly relates to an air conditioner noise reduction control method and an air conditioner, wherein the air conditioner comprises a low-load control mode, and when a set condition for executing the low-load control mode is reached, the low-load control mode is executed; the low-load control mode includes: the operating frequency of the compressor is increased based on the compressor discharge temperature. When the air conditioner runs at low load, the frequency of the compressor is adjusted according to the exhaust temperature of the compressor, the system disturbance is increased, and the exhaust temperature is increased, so that the rattling noise caused by scribing impact under the low load of the compressor is reduced, and the use comfort of a user is improved.
Description
Technical Field
The invention belongs to the field of air conditioners, and particularly relates to an air conditioner noise reduction control method and an air conditioner.
Background
Along with the improvement of scientific and technological level and standard of living, the user requires more highly more strictly to the travelling comfort of air conditioner, especially in this part of outer quick-witted noise, and a lot of users all are direct to install outer machine on the bedroom balcony, and outer machine noise this moment passes into indoorly very easily, and outer machine noise mainly produces by the compressor, and in the operation of compressor low-load, produces unusual noise more easily, influences the user and uses.
The present invention has been made in view of this situation.
Disclosure of Invention
The technical problem to be solved by the present invention is to overcome the defects of the prior art, and to provide a control method for reducing the noise of the compressor of the air conditioner under the condition of low load and an air conditioner.
In order to solve the technical problem, the invention provides a noise reduction control method of an air conditioner, wherein the air conditioner comprises a low-load control mode, and when a set condition for executing the low-load control mode is reached, the low-load control mode is executed;
the low-load control mode includes: the operating frequency of the compressor is increased based on the compressor discharge temperature.
Further optionally, the increasing the operating frequency of the compressor according to the level of the discharge temperature of the compressor includes:
acquiring a compressor discharge temperature Tp, and comparing the discharge temperature Tp with a first set temperature T1;
when the following conditions are satisfied: when the exhaust temperature Tp is larger than or equal to a first set temperature T1, raising the frequency of the compressor to a first operation frequency;
when the discharge temperature Tp < the first set temperature T1, the compressor frequency is raised to a second operating frequency, the first operating frequency being less than the second operating frequency.
Further optionally, when the compressor frequency is controlled to increase to the first operation frequency or the second operation frequency, the rotation speed of the outdoor fan is also reduced.
Further optionally, said reaching a set condition for executing said low load control mode comprises
The difference between the indoor environment temperature Tn and the user set temperature Ts satisfies the condition that the difference is more than or equal to Ts-Tn |, and the compressor operates for a set time at a third operating frequency which is less than the first operating frequency.
Further optionally, in the low load control mode, after the operating frequency of the compressor is increased according to the discharge temperature of the compressor, the indoor ambient temperature is also obtained, and the frequency of the compressor is reduced according to the indoor ambient temperature.
Further optionally, said reducing the compressor operating frequency as a function of the indoor ambient temperature comprises
When the difference value between the user set temperature Ts and the indoor environment temperature Tn meets the following conditions: and if the value Ts-Tn is greater than a second set difference value, the running frequency of the compressor is reduced, and the second set difference value is greater than the first set difference value.
Further optionally, in the process of reducing the operating frequency of the compressor, when a second set difference value of | Ts-Tn | ≦ is satisfied, the operating frequency of the compressor is controlled to stop decreasing, and the operating frequency of the compressor is increased according to the discharge temperature of the compressor.
Further optionally, when the difference between the user set temperature Ts and the indoor environment temperature Tn satisfies: and when the value of Ts-Tn is less than or equal to a second set difference value, determining whether to exit the low-load control mode according to the size of the exhaust temperature Tp.
Further optionally, said deciding whether to exit the low load control mode or not based on the magnitude of the compressor discharge temperature Tp includes
When the compressor discharge temperature Tp > a second set temperature T2, the low load control mode exits, the second set temperature > the first set temperature.
Further optionally, when the | Ts-Tn | > is greater than the set difference, the rotating speed of the outdoor fan is also reduced when the compressor is controlled to reduce the frequency.
The invention also provides an air conditioner which adopts any one of the noise reduction control methods of the air conditioner.
After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:
when the air conditioner runs at low load, the frequency of the compressor and the rotating speed of the outdoor fan are adjusted according to the exhaust temperature of the compressor, the system disturbance is increased, and the exhaust temperature is increased, so that the clicking sound of scribing impact under the low load of the compressor is reduced, and the use comfort of a user is improved.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments and that for a person skilled in the art, other drawings can also be derived from them without inventive effort. In the drawings:
fig. 1 and 2 are control flow charts of the embodiment of the present invention.
Fig. 3 is a diagram illustrating an operating frequency spectrum of a compressor according to an embodiment of the present invention.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but rather to illustrate it for those skilled in the art by reference to specific embodiments.
Detailed Description
In the description of the present invention, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings only for the convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "contacting," and "communicating" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
The present embodiment proposes a noise reduction control method for an air conditioner, as shown in the control flowchart of fig. 1, the air conditioner includes a low load control mode, and when a set condition for executing the low load control mode is reached, the low load control mode is executed;
the low load control mode includes: the operating frequency of the compressor is increased based on the compressor discharge temperature.
Specifically, the outdoor unit of the air conditioner of the present embodiment is provided with a first temperature sensor for detecting the discharge temperature Tn of the compressor in real time. The air conditioner of the embodiment can also detect the running frequency of the compressor in real time. When the set condition for executing the low load control mode is reached, namely when the difference between the indoor environment temperature Tn and the user set temperature Ts satisfies | Ts-Tn | or less than a first set difference, and the compressor operates at the third operating frequency for the set time, the low load control mode is considered to be executed, and the range of the first set difference is optionally 0-0.5 ℃. In one embodiment, in the cooling mode, the indoor temperature is 24.2 ℃, the user-set temperature is 24 ℃, the difference between the indoor temperature and the user-set temperature is 0.2 ℃, and is less than the first set difference, when the operating frequency of the compressor is reduced to 20HZ and the compressor is operated for 30min, the air conditioner starts to execute the low-load control mode when the preset condition for executing the low-load control mode is met. This is because, when the compressor is operated at the third operating frequency for a set time, the discharge temperature is gradually decreased from high to low, the liquid refrigerant from the evaporator gradually increases, the liquid refrigerant enters the compressor cavity and gradually increases, the pressure in the compression cavity increases, the vane separation force > the vane pressing force causes the vane to separate from the rotor and collide with the rotor, and the low load control mode is turned on. At this moment, the exhaust temperature of the compressor needs to be increased, the reduction of suction superheat degree is avoided, non-evaporated foam enters a suction cavity and an oil pool of the compressor to cause severe cavitation, the foam is filled in the whole pump body, and a sliding sheet is separated after the compressor sucks to generate a clicking sound. The embodiment adjusts the frequency of the compressor according to the exhaust temperature of the compressor in the low-load control mode so as to increase system disturbance and improve the exhaust temperature, and utilizes an unsteady system in the frequency increasing process to destroy a relatively steady system of a clatter, so that the clatter of scribing impact under the low load of the compressor is reduced, and the use comfort of a user is improved.
Further optionally, as shown in the control flow chart of fig. 2, the adjusting the operating frequency of the compressor according to the discharge temperature of the compressor includes:
acquiring a compressor discharge temperature Tp, and comparing the discharge temperature Tp with a first set temperature T1;
when the following conditions are met: when the exhaust temperature Tp is larger than or equal to a first set temperature T1, raising the frequency of the compressor to a first operation frequency; the third operating frequency is less than the first operating frequency;
when the discharge temperature Tp < the first set temperature T1, the compressor frequency is raised to a second operating frequency, the first operating frequency being less than the second operating frequency.
Specifically, because the compressor is in low-load operation, the operation frequency of the compressor is low, the exhaust temperature of the compressor is reduced, the liquid refrigerant from the evaporator is gradually increased, the liquid refrigerant enters the cavity of the compressor and is slowly increased, the pressure of the compression cavity is increased, the slip sheet separation force is larger than the slip sheet extrusion force, the slip sheet is separated from and collided with the rotor to form a clatter noise, in order to reduce the noise, the frequency of the compressor is increased according to the comparison result by comparing the exhaust temperature with a first set temperature, so that the exhaust temperature of the compressor is increased, the reduction of the suction superheat degree is avoided, the phenomenon of cavitation is severe when non-evaporated foam enters the suction cavity and the oil pool of the compressor, the foam fills the whole pump body, and the slip sheet is separated to generate the clatter noise after the compressor sucks, the relatively steady-state system of the clicking sounds is destroyed by the non-steady-state system of the up-conversion process.
In this embodiment, the magnitude of the first set temperature T1 can be finely adjusted according to the actual compressor operation state and the refrigerant state. In the embodiment, two frequency increasing modes of the frequency increasing mode are designed when the frequency is lower than the first set temperature T1 and the frequency is higher than the first set temperature T1, specifically, when the exhaust temperature Tp is higher than the first set temperature T1, the frequency increasing mode of the compressor is lower than the frequency when the exhaust temperature Tp is lower than the first set temperature T1 and is lower than the frequency when the exhaust temperature Tp is lower than the first set temperature T1, because the suction superheat degree is lower theoretically when the exhaust temperature Tp is lower than the first set temperature T1, and a higher frequency is needed to improve the suction superheat degree, wherein the first operating frequency and the second operating frequency are determined according to the characteristics of the compressor and the whole machine, and the first operating frequency and the second operating frequency can be adjusted according to specific situations. In some embodiments, detecting if discharge temperature Tp is greater than 35 ℃ and if discharge temperature is greater than 35 ℃, increasing compressor frequency to 35 Hz; if the discharge temperature is less than 35 deg.C, the compressor frequency is increased to 48 Hz.
Further alternatively, as shown in the control flowchart of fig. 2, when the compressor frequency is controlled to be increased to the first operation frequency or the second operation frequency, the rotation speed of the outdoor fan is also decreased. In some embodiments, the rotational speed of the outdoor fan is reduced to a first rotational speed when the compressor is increased to a first operating frequency, or the rotational speed of the outdoor fan is also reduced to a second rotational speed when the compressor frequency is controlled to be increased to a second operating frequency. The first rotating speed and the second rotating speed can be equal or unequal, and optionally, the first rotating speed is less than or equal to the second rotating speed. In some embodiments, the first rotation speed and the second rotation speed are both reduced by 100rpm on the basis of the rotation speed of the original external fan, and the reduction of the rotation speed of the outdoor fan while increasing the operation frequency of the compressor can further increase the exhaust temperature of the compressor.
Further optionally, in order to avoid discomfort to a user due to a change in the indoor temperature caused by the frequency increase of the compressor, in the low load control mode of the air conditioner operation, after the operating frequency of the compressor is increased according to the discharge temperature of the compressor, the indoor ambient temperature is also obtained, and the frequency of the compressor is reduced according to the indoor ambient temperature.
Specifically, as shown in the control flow chart of FIG. 2, the adjusting of the compressor frequency according to the indoor ambient temperature includes
When the difference value between the user set temperature Ts and the indoor environment temperature Tn meets the following conditions: when Ts-Tn is greater than the second set difference, the compressor is controlled to reduce the frequency at the set frequency, and the second set difference is greater than the first set difference.
In the cooling mode, when the air conditioner executes the low load control mode, since the indoor ambient temperature Tn is close to the user set temperature Ts, the compressor frequency is increased, which causes the indoor ambient temperature Tn to continuously decrease, and the difference from the user set temperature Ts is large, so that the user feels that the indoor environment is suddenly cooled and feels uncomfortable. Therefore, when Ts-Tn is larger than a second set difference, the compressor is controlled to reduce the frequency by the set frequency to slowly reduce the indoor environment temperature, even the indoor environment temperature Tn is slowly increased, so that the indoor environment temperature Tn and the user set temperature Ts are maintained within the temperature difference range, and the comfort of a user is ensured. Similarly, in the heating mode, when Tn-Ts > the second setting difference, when the air conditioner executes the low load control mode, since the indoor ambient temperature Tn is close to the user setting temperature Ts, the compressor frequency is increased, which causes the indoor ambient temperature Tn to continuously rise, and the difference from the user setting temperature Ts is large, the user feels that the indoor is suddenly heated and feels uncomfortable. Therefore, when Tn-Ts is larger than the second set difference, the compressor is controlled to reduce the frequency by the set frequency, so that the indoor environment temperature rises a little slowly, even the indoor environment temperature Tn drops slowly, and the difference between the indoor environment temperature Tn and the user set temperature Ts is maintained in the temperature difference range, thereby ensuring the comfort of users. In some specific embodiments, if the difference between the indoor environment temperature and the temperature set by the user is more than 2 ℃, the human body is easy to feel cold and hot, so when the temperature is | Ts-Tn | > 2 ℃, the frequency of the compressor is reduced by 10s/hz, the attenuation speed of the exhaust temperature is reduced, and the suction superheat degree of the system is controlled; the set frequency can be adjusted according to actual needs.
Further optionally, in the process of reducing the operating frequency of the compressor, when a second set difference value of | Ts-Tn | < is satisfied, the operating frequency of the compressor is controlled to stop reducing, and the operating frequency of the compressor is increased according to the exhaust temperature of the compressor, so that the noise of the compressor is reduced while the sensible temperature of a user is in a comfortable temperature range.
Further optionally, when the difference between the user set temperature Ts and the indoor environment temperature Tn satisfies: and when the | Ts-Tn | is less than or equal to a second set difference value, whether the low-load control mode exits is determined according to the size of the exhaust temperature Tp.
Specifically, as shown in the control flowchart of fig. 2, when the compressor discharge temperature Tp > the second set temperature T2, the low load control mode is exited, and the second set temperature > the first set temperature, indicating that the suction superheat is sufficient, the low load control mode is exited.
Further optionally, as shown in the control flowchart of fig. 2, when | Ts-Tn | > is greater than the set difference, when the compressor is controlled to reduce the frequency at the set frequency, the rotation speed of the outdoor fan is further reduced to a third rotation speed, at this time, the rotation speed of the outdoor fan is reduced again, the refrigerating capacity is reduced, so that the exhaust temperature of the whole machine is increased, the condensing temperature is increased, the evaporating temperature is increased, the dryness of the refrigerant of the indoor unit in the whole system is increased, the suction superheat degree is ensured, the third rotation speed is less than or equal to the first rotation speed, and the third rotation speed is less than or equal to the second rotation speed. In some embodiments, the third speed is reduced by 100rpm based on the original external fan speed.
In order to embody the noise reduction effect of the noise reduction control method of the present embodiment in the low load mode of the compressor, the inventor collects the noise of the compressor adopting the noise reduction control method of the present embodiment and the noise of the compressor not adopting the noise reduction control method of the present embodiment respectively, fig. 3 is an operation frequency spectrum diagram at different positions of the compressor, as can be seen from fig. 3, when the compressor operates at a low frequency of 12HZ, the peak value of the "click" of the compressor not adopting the noise reduction control method of the present embodiment is 6k-12.8k, the "click" of the compressor adopting the noise reduction control method of the present embodiment in the low frequency operation is basically eliminated, and the noise reduction control method of the present embodiment can obviously reduce the noise of the compressor in the low load operation.
The embodiment also provides an air conditioner which adopts any one of the noise reduction control methods of the air conditioner.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (9)
1. A noise reduction control method of an air conditioner is characterized in that the air conditioner comprises a low-load control mode, and when a set condition for executing the low-load control mode is reached, the low-load control mode is executed;
the low load control mode includes: increasing the operating frequency of the compressor according to the exhaust temperature of the compressor;
under the low-load control mode, after the operating frequency of the compressor is increased according to the exhaust temperature of the compressor, the indoor environment temperature is also obtained, and the frequency of the compressor is reduced according to the indoor environment temperature; the reduction of the operating frequency of the compressor according to the indoor ambient temperature comprises
When the difference between the user set temperature Ts and the indoor environment temperature Tn satisfies the following conditions: and if the value Ts-Tn is greater than the second set difference value, the running frequency of the compressor is reduced.
2. The method as claimed in claim 1, wherein the step of increasing the operating frequency of the compressor according to the discharge temperature of the compressor comprises:
acquiring a compressor discharge temperature Tp, and comparing the discharge temperature Tp with a first set temperature T1;
when the following conditions are met: when the exhaust temperature Tp is larger than or equal to a first set temperature T1, raising the frequency of the compressor to a first operating frequency;
when the discharge temperature Tp < the first set temperature T1, the compressor frequency is raised to a second operating frequency, the first operating frequency being less than the second operating frequency.
3. The noise reduction control method of an air conditioner according to claim 2, wherein when the compressor frequency is controlled to be increased to the first operation frequency or the second operation frequency, the rotation speed of the outdoor fan is also decreased.
4. The method as claimed in claim 1, wherein the reaching of the set condition for executing the low load control mode comprises
The difference between the indoor environment temperature Tn and the user set temperature Ts satisfies the condition that the difference is less than or equal to a first set difference, the compressor operates for a set time at a third operating frequency, the third operating frequency is less than the first operating frequency, and the second set difference is greater than the first set difference.
5. The method as claimed in claim 1, wherein in the process of decreasing the operating frequency of the compressor, when a second set difference value of | Ts-Tn | ≦ is satisfied, the operating frequency of the compressor is controlled to stop decreasing, and the operating frequency of the compressor is increased according to the discharge temperature of the compressor.
6. The noise reduction control method of the air conditioner according to claim 5, wherein when the difference between the user set temperature Ts and the indoor ambient temperature Tn satisfies: and when the value of Ts-Tn is less than or equal to a second set difference value, determining whether to exit the low-load control mode according to the size of the exhaust temperature Tp.
7. The noise reduction control method of claim 6, wherein the determining whether to exit the low load control mode according to the magnitude of the discharge temperature Tp of the compressor comprises
When the compressor discharge temperature Tp > a second set temperature T2, the low load control mode exits, the second set temperature > the first set temperature.
8. The method as claimed in any one of claims 1 to 7, wherein when Ts-Tn > a second set difference, the rotation speed of the outdoor fan is also reduced when the compressor is controlled to reduce the frequency.
9. An air conditioner characterized in that it comprises the air conditioner noise reduction control method of any one of claims 1 to 8.
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| CN110779183B (en) * | 2019-11-12 | 2021-12-14 | 广州华凌制冷设备有限公司 | Operation control method and device, air conditioner and storage medium |
| CN114646156A (en) * | 2022-03-16 | 2022-06-21 | 青岛海尔空调器有限总公司 | Control method, control device, equipment and medium for electronic expansion valve of air conditioner |
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| CN111336666A (en) * | 2020-03-13 | 2020-06-26 | 广东美的制冷设备有限公司 | Operation method and device of air conditioner, air conditioner and computer readable storage medium |
| CN112066532A (en) * | 2020-08-20 | 2020-12-11 | 珠海格力电器股份有限公司 | Method and device for eliminating noise of air conditioner, electronic equipment and storage medium |
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| JP5585245B2 (en) * | 2010-06-30 | 2014-09-10 | 三洋電機株式会社 | Refrigeration equipment |
| CN207035543U (en) * | 2017-03-31 | 2018-02-23 | 广东美芝精密制造有限公司 | Refrigerating plant and heat pump assembly |
| CN108375257A (en) * | 2018-01-04 | 2018-08-07 | 青岛海尔空调器有限总公司 | Air-conditioner control method and control circuit |
| CN108375175B (en) * | 2018-02-08 | 2019-09-24 | 珠海格力电器股份有限公司 | Air conditioner system control method and device |
| CN108917084B (en) * | 2018-07-12 | 2020-09-22 | Tcl空调器(中山)有限公司 | Noise reduction method for air conditioner compressor and air conditioner |
| CN110454951B (en) * | 2019-08-05 | 2021-05-25 | 广东美的制冷设备有限公司 | Air conditioning system and control method thereof |
| CN112066522A (en) * | 2020-09-14 | 2020-12-11 | Tcl空调器(中山)有限公司 | Control method of air conditioner, air conditioner and computer readable storage medium |
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| EP3130862A1 (en) * | 2015-08-11 | 2017-02-15 | Lg Electronics Inc. | Air conditioner and method of operating the same |
| CN111336666A (en) * | 2020-03-13 | 2020-06-26 | 广东美的制冷设备有限公司 | Operation method and device of air conditioner, air conditioner and computer readable storage medium |
| CN112066532A (en) * | 2020-08-20 | 2020-12-11 | 珠海格力电器股份有限公司 | Method and device for eliminating noise of air conditioner, electronic equipment and storage medium |
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