Title:
AIR DISCHARGE NOISE REDUCTION DEVICE AND WEARABLE APPARATUS
Document Type and Number:
WIPO Patent Application WO/2020/258915
Kind Code:
A1
Abstract:
Disclosed are an air discharge noise reduction device and a wearable apparatus. The air discharge noise reduction device can be connected to an inflatable and deflatable device, and comprises a silencing material body (5) and at least two silencing cavities (21, 22, 23), wherein each of the silencing cavities (21, 22, 23) is filled with the silencing material body (5); in an airflow direction, the silencing cavities (21, 22, 23) are connected by means of flow guide pipes (27, 28), the most upstream silencing cavity (21) is provided with an air inlet pipe (24) capable of being connected to the inflatable and deflatable device, and the most downstream silencing cavity (23) is provided with an air discharge pipe (26) capable of discharging an airflow; and the air inlet pipe (24) is provided with a first pipe section (29) located inside the most upstream silencing cavity (21), and a plurality of silencing holes (25) are provided in a peripheral wall of the first pipe section (29) in a penetrating manner. By means of providing the silencing holes (25), the peak frequency of air discharge noise can be improved; and the higher the frequency, the shorter the wavelength, and noise with a shorter wavelength can be more easily subjected to silencing noise reduction treatment. By means of providing the plurality of silencing cavities (21, 22, 23), an airflow is subjected, when passing through the various levels of silencing cavities, to silencing noise reduction by the silencing material body, such that an air discharge sound can be effectively reduced.
Inventors:
MA XUEJUN (CN)
WAN YONG (CN)
CHEN GANG (CN)
WAN YONG (CN)
CHEN GANG (CN)
Application Number:
PCT/CN2020/077992
Publication Date:
December 30, 2020
Filing Date:
March 05, 2020
Export Citation:
Assignee:
SHENZHEN BREO TECHNOLOGY CO (CN)
International Classes:
F16L55/033; F01N1/10
Foreign References:
| CN105332764A | 2016-02-17 | |||
| CN206268700U | 2017-06-20 | |||
| CN207168706U | 2018-04-03 | |||
| CN207634893U | 2018-07-20 | |||
| CN104344151A | 2015-02-11 | |||
| KR20100108694A | 2010-10-08 |
Attorney, Agent or Firm:
SHENZHEN ZHONGYI UNION INTELLECTUAL PROPERTY AGENCY CO., LTD. (CN)
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