CN201927508U - Arc extinguishing chamber - Google Patents
Arc extinguishing chamber Download PDFInfo
- Publication number
- CN201927508U CN201927508U CN201120005870XU CN201120005870U CN201927508U CN 201927508 U CN201927508 U CN 201927508U CN 201120005870X U CN201120005870X U CN 201120005870XU CN 201120005870 U CN201120005870 U CN 201120005870U CN 201927508 U CN201927508 U CN 201927508U
- Authority
- CN
- China
- Prior art keywords
- arc
- arc extinguishing
- gas outlet
- air outlets
- grid pieces
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model relates to an arc extinguishing chamber which comprises arc extinguishing grating sheets and an arc separating plate, wherein the arc separating plate comprises two arc separating side plates and arc separating back plates; notches are arranged at front ends of the arc extinguishing grating sheets; the arc extinguishing grating sheets are arranged between the two arc separating side plates at intervals; a plurality of air outlets are formed on the arc separating back plates; the arc separating back plates are arranged on the back surfaces of the arc extinguishing grating sheets; the air outlets are in a rectangular shape; the air outlets are arranged into two rows in a staggered way along the direction of the arc separating side plates; and the length of the air outlets is more than the distance between two adjacent arc extinguishing grating sheets. The cooling efficiency of the arc extinguishing chamber is promoted by the expanded air outlets; the arc repeated breakdown phenomenon can be effectively restrained; and the breaking capability of a miniature circuit breaker is improved.
Description
Technical field
The utility model relates to a kind of arc-control device that is used for miniature circuit breaker, relates in particular to a kind of arc control device.
Background technology
Miniature circuit breaker generally adopts grid sheet arc extinguishing technology.U type that arc control device are made by ferromagnetic material or V-type grid sheet and assemble by the flash barrier that insulating material is made.When miniature circuit breaker divides deenergizing to produce electric arc, because the existence of grid sheet, the magnetic flux path that arc current produces in the air around distorts, magnetized grid sheet produces electromagnetic force electric arc is pulled to arc control device, to the cutting apart and cool off of electric arc, arc resistance increases, and arc voltage is improved by the grid sheet, when arc voltage reached certain value, electric arc was extinguished.But the arc control device that adopt the grid sheet are when arc extinguishing, and flash barrier can not in time cool off thermal current and distributes, and the electric arc re-breakdown phenomenon can take place, cause arc voltage to fall rise with arc current, thereby prolong the arcing time, the current limiting performance variation influences the segmentation ability of miniature circuit breaker.
Summary of the invention
The purpose of this utility model is to overcome the defective of prior art, provides a kind of and can effectively suppress the electric arc re-breakdown phenomenon, improves the arc control device of miniature circuit breaker segmentation ability.
For achieving the above object, the utility model adopts a kind of arc control device, comprise arc extinguishing grid pieces and flash barrier, flash barrier comprises two blocks of arc side plates and arc backboard, and the arc extinguishing grid pieces front end offers notch, arc extinguishing grid pieces is disposed between two blocks of arc side plates, form a plurality of gas outlets on the arc backboard, the arc backboard is arranged on the arc extinguishing grid pieces back side, and described gas outlet is a rectangle, the gas outlet is staggered to two row along arc side plate direction, and the length of gas outlet is greater than the distance between two adjacent arc extinguishing grid pieces.
The beneficial effects of the utility model are cooling effectivenesss that the gas outlet of expansion has promoted arc control device, can effectively suppress the electric arc re-breakdown phenomenon, improve the segmentation ability of miniature circuit breaker.
The utility model further is set to described gas outlet and comprises three big gas outlets and two little gas outlets, the length of little gas outlet is less than half of the length of big gas outlet, row are arranged in a big gas outlet and two little gas outlets, and another row are arranged in two gas outlets.The set-up mode of gas outlet and arc backboard big or small suitable.
Description of drawings
Fig. 1 is the utility model embodiment stereogram
Fig. 2 is the utility model embodiment front view.
Embodiment
As Fig. 1, shown in 2, specific embodiment of the utility model is a kind of arc control device, comprise arc extinguishing grid pieces 1 and flash barrier, flash barrier comprises two blocks of arc side plates 2 and arc backboard 3, arc extinguishing grid pieces 1 front end offers notch 11, arc extinguishing grid pieces 1 both sides all form two fixture blocks 12, corresponding arc extinguishing grid pieces 1 forms the suitable bayonet socket 22 of many groups and fixture block 12 uniformly on the arc side plate 2, arc extinguishing grid pieces 1 is disposed between two blocks of arc side plates 2 by the cooperation of fixture block 12 and bayonet socket 22, form a plurality of gas outlets on the arc backboard 3, the arc backboard is arranged on arc extinguishing grid pieces 1 back side, the gas outlet comprises three big gas outlets 31 and two little gas outlets 32, big gas outlet 31 is a rectangle, the length of big gas outlet 31 is greater than the distance of 1 of two adjacent arc extinguishing grid pieces, the length of little gas outlet 32 is less than half of big gas outlet 31, the width of little gas outlet 32 is the same with big gas outlet 31, the gas outlet is staggered to two row along arc side plate 2 directions, row are arranged in a big gas outlet 31 and two little gas outlets 32, and another row are arranged in two gas outlets 31.
Claims (2)
1. arc control device, comprise arc extinguishing grid pieces and flash barrier, flash barrier comprises two blocks of arc side plates and arc backboard, the arc extinguishing grid pieces front end offers notch, and arc extinguishing grid pieces is disposed between two blocks of arc side plates, forms a plurality of gas outlets on the arc backboard, the arc backboard is arranged on the arc extinguishing grid pieces back side, it is characterized in that: described gas outlet is a rectangle, and the gas outlet is staggered to two row along arc side plate direction, and the length of gas outlet is greater than the distance between two adjacent arc extinguishing grid pieces.
2. arc control device according to claim 1, it is characterized in that: described gas outlet comprises three big gas outlets and two little gas outlets, the length of little gas outlet is less than half of the length of big gas outlet, row are arranged in a big gas outlet and two little gas outlets, and another row are arranged in two gas outlets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120005870XU CN201927508U (en) | 2011-01-08 | 2011-01-08 | Arc extinguishing chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120005870XU CN201927508U (en) | 2011-01-08 | 2011-01-08 | Arc extinguishing chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201927508U true CN201927508U (en) | 2011-08-10 |
Family
ID=44431345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120005870XU Expired - Fee Related CN201927508U (en) | 2011-01-08 | 2011-01-08 | Arc extinguishing chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201927508U (en) |
-
2011
- 2011-01-08 CN CN201120005870XU patent/CN201927508U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20170108 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |