Arc extinguishing device of circuit breaker

A technology of arc extinguishing device and circuit breaker, applied in the direction of circuit breaker components, etc., can solve the problems of circuit breaker damage, limited breaking capacity of circuit breakers, arc extinguishing and other problems

Pending Publication Date: 2019-05-14
WENZHOU NEW BLUD SKY ELECRICIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the breaking capacity of the circuit breaker with this structure is still limited. As the current load of the circuit breaker increases, if the arc generated during breaking is not quickly extinguished, the high temperature carried by the arc will damage the circuit breaker. internal damage

Method used

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  • Arc extinguishing device of circuit breaker
  • Arc extinguishing device of circuit breaker
  • Arc extinguishing device of circuit breaker

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Embodiment Construction

[0021] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, ...

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PUM

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Abstract

The invention relates to an arc extinguishing device of a circuit breaker. The arc extinguishing device comprises a circuit breaker shell, and a static contact piece, a movable contact piece, an arc extinguishing grid piece and an arc striking piece which are arranged in the circuit breaker shell; an arc extinguishing chamber is arranged at the breaking position, close to the static contact pieceand the movable contact piece, of the circuit breaker shell; the arc extinguishing grid piece and the arc striking piece are located in the arc extinguishing chamber; one end of the arc striking pieceabuts against the static contact piece or abuts against the movable contact piece when the movable contact piece and the static contact piece are disconnected, and the other end of the arc striking piece extends to the arc extinguishing grid piece; the arc extinguishing device is characterized by further comprising an arc pushing piece, wherein the arc pushing piece forms a magnetic field facingthe arc extinguishing grid piece, and the magnetic field pushes the arc to the direction of the arc extinguishing grid piece when the static contact piece and the movable contact piece are disconnected to generate arc. By adoption of the scheme, the invention provides the arc extinguishing device of the circuit breaker capable of enhancing the breaking capacity by increasing the arc striking efficiency, so that the circuit breaker can meet the requirements of high-current loads.

Description

technical field [0001] The invention relates to the field of circuit breakers, in particular to an arc extinguishing device for a circuit breaker. Background technique [0002] A circuit breaker refers to a switching device that can close, carry and break current under normal circuit conditions and can close, carry and break current under abnormal circuit conditions within a specified time. In the operation process of the circuit breaker, the process of connecting and breaking the current between the moving contact and the static contact is often accompanied by the generation and extinguishing of the arc. The arc is a gas discharge phenomenon with extremely high temperature. It has certain hazards, so it is necessary to set up an arc extinguishing device to solve the influence of the arc in the electrical appliance. [0003] The traditional arc extinguishing device includes a circuit breaker housing and static contacts, moving contacts, arc extinguishing grids and arc strik...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H73/18
Inventor 黄立专黄明光吴鹏
Owner WENZHOU NEW BLUD SKY ELECRICIAL
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