Miniature circuit breaker

A technology of small circuit breakers and shells, which is applied to circuit breaker parts and other directions, can solve the problem that the arc is not easy to enter the arc extinguishing chamber, and achieve the effect of easy entry of the arc into the arc extinguishing chamber and reducing the gas pressure.

Inactive Publication Date: 2012-03-07
SHANGHAI NOARK ELECTRIC
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcoming that the arc in the arc extinguishing chamber of the existing small circuit breaker is not easy to enter the arc extinguishing chamber due to the high pressure when breaking, and to provide a method that reduces the gas pressure during breaking and makes it easier for the arc to enter the arc extinguishing chamber miniature circuit breaker

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Miniature circuit breaker
  • Miniature circuit breaker

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The present invention will be further described below in conjunction with specific examples, but the present invention is not limited to these specific implementations. Those skilled in the art will realize that the present invention covers all alternatives, modifications and equivalents as may be included within the scope of the claims.

[0015] refer to figure 1 , a small circuit breaker, including a housing, the housing is installed with an instantaneous system 2, an operating mechanism 1, a delay system 3 and an arc extinguishing system 4, and the arc extinguishing system 4 includes an arc angle 41, an arc striker 42 . An arc extinguishing chamber 43, the arc extinguishing chamber 43 communicates with the gas outlet, a gas buffer chamber 44 communicated with the arc extinguishing chamber 43 is provided in the housing, and the gas buffer chamber 44 communicates with the gas outlet.

[0016] The housing is provided with a plurality of gas buffer chambers 44 communica...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a miniature circuit breaker which comprises a shell. An instantaneous system, an operating mechanism, a time delay system and an arc quenching system are arranged in the shell. The arc quenching system comprises an arc angle, an arc striking sheet and an arc extinguish chamber. The arc extinguish chamber is communicated with a gas outlet. A gas buffer room communicated with the arc extinguish chamber is arranged in the shell. The gas buffer room is communicated with the gas outlet. The miniature circuit breaker has the beneficial effect that a gas pressure in the breaking process is reduced, so that an electric arc can more easily enter the arc extinguish chamber, and the circuit breaker has a function of rapidly extinguishing the electric arc.

Description

technical field [0001] The invention belongs to the field of low-voltage electrical appliances, in particular to a small circuit breaker. Background technique [0002] The miniature circuit breaker is the terminal equipment of the power distribution line. It has the characteristics of small size and modularization. It is mainly used for switching and protecting lines. It usually has instantaneous protection and time-delay protection, and the interior is mainly composed of instantaneous system, time-delay system, operating mechanism and arc extinguishing system. Among them, the main function of the arc extinguishing system is to make the arc generated during the breaking process of the circuit breaker quickly enter the arc extinguishing chamber through the arc striker, and absorb and discharge the heat and high-pressure gas generated by the arc. The quality of the arc extinguishing system determines the breaking capacity of the circuit breaker. The exhaust hole behind the a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): H01H73/18
Inventor 严鹏斌邓彦军段育明
Owner SHANGHAI NOARK ELECTRIC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap