Title:
ACTIVE NOISE REDUCTION AIR CONDITIONER AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/174782
Kind Code:
A1
Abstract:
An active noise reduction air conditioner and a control method therefor. The air conditioner comprises an outdoor unit, an indoor unit, and a central processor located inside the indoor unit; the indoor unit further comprises an indoor sound pickup device, indoor filters, an indoor active noise reduction processing module, and an indoor loudspeaker which are sequentially connected; the central processor is communicatingly connected to the indoor active noise reduction processing module; the indoor filters comprise multiple indoor filters having different fixed coefficients; the indoor sound pickup device is connected to all the indoor filters having different fixed coefficients; the indoor active noise reduction processing module is connected, by means of a circuit switching module, to one of the inner filters having the coefficients. The air conditioner can emit noise reduction sound waves corresponding to low-frequency noise, so as to cancel out the low-frequency noise, thereby achieving noise reduction.
Inventors:
WANG YADONG (CN)
ZHAO KAIQIANG (CN)
ZHAO KAIQIANG (CN)
Application Number:
PCT/CN2020/111709
Publication Date:
September 10, 2021
Filing Date:
August 27, 2020
Export Citation:
Assignee:
QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD (CN)
HAIER SMART HOME CO LTD (CN)
HAIER SMART HOME CO LTD (CN)
International Classes:
F24F1/0003; F24F11/54; F24F13/24
Domestic Patent References:
| WO2011077602A1 | 2011-06-30 |
Foreign References:
| CN111189107A | 2020-05-22 | |||
| CN111189106A | 2020-05-22 | |||
| CN211822705U | 2020-10-30 | |||
| CN211822707U | 2020-10-30 | |||
| JPH10171469A | 1998-06-26 | |||
| CN106766085A | 2017-05-31 | |||
| CN110207276A | 2019-09-06 | |||
| CN105674534A | 2016-06-15 |
Attorney, Agent or Firm:
HANRAY LAW FIRM (CN)
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