Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
ARC EXTINGUISHING STRUCTURE FOR DIRECT-CURRENT CIRCUIT BREAKER
Document Type and Number:
WIPO Patent Application WO/2017/198166
Kind Code:
A1
Abstract:
An arc extinguishing structure for a direct-current circuit breaker. An arc extinguishing chamber (3) is mounted on a second housing (2) and is provided with a side opening (30) opposite to a first housing (1). A gas producing hood (4) is mounted in the lower part in the arc extinguishing chamber (3) and comprises two opposite gas producing plates (41, 42) and a baffling plate (43). The baffling plate (43) is opposite to the side opening (30) and is close to the second housing (2). A moving contact (5) and a static contact (6) are mounted in a mounting space (10), and breaking positions of the moving contact and the static contact are located in an accommodating space (40) and are close to the baffling plate (43). When the moving contact (5) and the static contact (6) disconnect and generate electric arcs, the gas producing plates (41, 42) and the baffling plate (43) are triggered by the electric arcs, and a large quantity of gas is generated to push the electric arcs to move in a direction away from the baffling plate (43). Lower openings (71) are formed in the sides of arc extinguishing grid sheets (7) mounted on the upper portion in the arc extinguishing chamber (3), the sides facing to the accommodating space (40). The size of the lower openings (71) is gradually decreased in the direction from the second housing (2) to the first housing (1), and the electric arcs are continuously blocked by the arc extinguishing grid sheets (7) having smaller lower openings (71) in the moving process, so that the electric arcs cannot rush out of the side opening (30) of the arc extinguishing chamber (3) and can only enter the space among the arc extinguishing grid sheets (7) and are extinguished as soon as possible.

Inventors:
ZHANG, Yanxia (People Industry Zone Liushi Town, Yueqing, Zhejiang 4, 325604, CN)
ZHANG, Li (People Industry Zone Liushi Town, Yueqing, Zhejiang 4, 325604, CN)
ZHENG, Zhihao (People Industry Zone Liushi Town, Yueqing, Zhejiang 4, 325604, CN)
CHEN, Qianzhong (People Industry Zone Liushi Town, Yueqing, Zhejiang 4, 325604, CN)
Application Number:
CN2017/084652
Publication Date:
November 23, 2017
Filing Date:
May 17, 2017
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
ZHEJIANG PEOPLE ELE. APPLIANCE CO., LTD. (People Industry Zone Liushi Town, Yueqing, Zhejiang 4, 325604, CN)
International Classes:
H01H73/18; H01H9/34
Foreign References:
CN105762041A2016-07-13
CN205595296U2016-09-21
CN105788986A2016-07-20
CN205595297U2016-09-21
CN204067289U2014-12-31
CN201285744Y2009-08-05
CN102623270A2012-08-01
CN104124117A2014-10-29
CN203826321U2014-09-10
JPS62276724A1987-12-01
Attorney, Agent or Firm:
SUNSHINE INTELLECTUAL PROPERTY INTERNATIONAL CO., LTD (Room 503, Floor 5 Tower A,No. 21, A, Haidian South Road Zhongguancun Intellectual Property Building, Haidian District, Beijing 0, 100080, CN)
Download PDF: