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Title:
ARC-QUENCHING CHAMBER FOR USE WITH UNIVERSAL CIRCUIT BREAKERS
Document Type and Number:
WIPO Patent Application WO/2018/072254
Kind Code:
A1
Abstract:
An arc-quenching chamber for use with universal circuit breakers, comprising an arc-isolating wall (1) and a plurality of arc-striking plates (2) installed between two opposing sidewalls of the arc-isolating wall (1), wherein an arc-quenching assembly plate (3) is provided on a bottom portion of the arc-isolating wall (1), a plurality of vent through-holes (301) are provided on a bottom portion of the arc-quenching assembly plate (3), and a total area of the vent through-holes (301) distributed at an end of the arc-quenching assembly plate (3) close to a static bus is smaller than a total area of the vent through-holes (301) distributed at an end far from the static bus. In the arc-quenching chamber for use with universal circuit breakers of the present solution, the structure of the arc-quenching assembly plate (3) is improved upon such that the total area of the vent through-holes (301) distributed at the end of the arc quenching assembly plate (3) close to the static bus is smaller than the total area of the vent through-holes (301) distributed at the end far from the static bus. As a result, air pressure is uniformly distributed inside the arc-quenching chamber, arc-quenching time is reduced, the service life of a circuit breaker is extended, and costs are lowered.

Inventors:
LEI, Hongjian (No.1, Chint Road Chint Industrial Zone,North Baixian, Yueqing Zhejiang 3, 325603, CN)
DAI, Zhaoxu (No.1, Chint Road Chint Industrial Zone,North Baixian, Yueqing Zhejiang 3, 325603, CN)
WANG, Keming (No.1, Chint Road Chint Industrial Zone,North Baixian, Yueqing Zhejiang 3, 325603, CN)
YANG, Yingjie (No.1, Chint Road Chint Industrial Zone,North Baixian, Yueqing Zhejiang 3, 325603, CN)
CHEN, Xinhao (No.1, Chint Road Chint Industrial Zone,North Baixian, Yueqing Zhejiang 3, 325603, CN)
Application Number:
CN2016/106578
Publication Date:
April 26, 2018
Filing Date:
November 21, 2016
Export Citation:
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Assignee:
ZHEJIANG CHINT ELECTRICS CO.,LTD. (No.1, Chint Road Chint Industrial Zone,North Baixian, Yueqing Zhejiang 3, 325603, CN)
International Classes:
H01H73/18
Foreign References:
CN206134627U2017-04-26
CN201532915U2010-07-21
CN204257457U2015-04-08
CN205140911U2016-04-06
CN203839321U2014-09-17
JPH07130272A1995-05-19
Attorney, Agent or Firm:
BEIJING JOYAN INTELLECTUAL PROPERTY OFFICE (Room 2607, Tower A Millennium Plaza,No. 72 Xisanhuan North Road, Haidian District, Beijing 8, 100048, CN)
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