CN2938361Y - Arc-control device of small circuit breaker - Google Patents
Arc-control device of small circuit breaker Download PDFInfo
- Publication number
- CN2938361Y CN2938361Y CN 200620008964 CN200620008964U CN2938361Y CN 2938361 Y CN2938361 Y CN 2938361Y CN 200620008964 CN200620008964 CN 200620008964 CN 200620008964 U CN200620008964 U CN 200620008964U CN 2938361 Y CN2938361 Y CN 2938361Y
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- CN
- China
- Prior art keywords
- arc extinguishing
- arc
- control device
- circuit breaker
- utility
- 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 - Lifetime
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The utility model relates to an arc extinguishing arrangement for miniature breaker, which is characterized in that the utility model comprises a right angle shape arc extinguishing cover and a plurality of arc extinguishing chute pieces made of mabetic materials with eccentricity anisomerous V-shape grooves; and the arc extinguishing chute pieces are arranged in interlacing at a certain distance. The V-shape grooves are staggered among the pieces. The arc extinguishing performance is directly or indirectly affected by the thickness, the piece numbers, the distance and the materials of arc extinguishing chute pieces and the materials of the arc extinguishing cover. The utility model can improve the performance of arc extinguishing and the reliability of product without changing the volume of arc extinguishing chamber.
Description
Technical field
The utility model relates to a kind of miniature circuit breaker arc-control device, especially is fit to the miniature circuit breaker that short circuit breaking current is had relatively high expectations.
Background technology
At present, miniature circuit breaker arc-control device commonly used is made up of symmetry " V " shape of rule or " U " shape arc extinguishing grid pieces and steel plate paper arc extinguishing case, it is bigger that the notch of rule is arranged the resistance that makes electric arc enter the grid sheet, particularly in big electric current disjunction, the electric arc of high heat can not enter arc extinguishing grid pieces fast, arc voltage rises slowly, blow-out time lag.Because steel plate paper heat resistance is not high, heat resistance is relatively poor when causing the big electric current of circuit breaker disjunction, and arc-control device easily catches fire, do not improve because this type of arc-control device arc-rupturing capacity does not often restrict the miniature circuit breaker breaking capacity by force, simultaneously the product safety reliability is constituted a threat to.
Summary of the invention
In order to overcome the threat that miniature circuit breaker arc-control device arc-rupturing capacity commonly used does not constitute the product safety reliability by force, the utility model provides a kind of novel miniature circuit breaker arc-control device, this arc-control device is under the situation that does not change original arc control device volume, can effectively improve arc extinction performance, improve the product safety reliability.The technical scheme that its technical problem that solves the utility model adopts is: the arc extinguishing case adopts and strengthens fire-retardant aerogenesis insulating material, the arc extinguishing case is " Contraband " shape, simultaneously open a plurality of louvres at arc extinguishing case periphery, open eccentric asymmetric " V " shape groove on the arc extinguishing grid pieces making by magnetic material, arc-control device is made up of arc extinguishing case and a lot of sheet arc extinguishing grid pieces, be staggered by certain distance between the arc extinguishing grid pieces sheet, make that " V " groove staggers mutually between sheet and the sheet.Dynamic/static contact is opened generation electric arc when the big electric current of miniature circuit breaker disjunction, arc current space around produces magnetic flux, the grid sheet is magnetized, the grid sheet produces a kind of suction of electric arc being drawn in arc control device, the staggering of interlayer grid sheet reduced the resistance that electric arc enters the grid sheet, can increase the speed that electric arc elongates, promoting electric arc cuts apart through arc extinguishing grid pieces at a high speed, arc-extinguish chamber shell wall top layer is vaporized by the effect of high arc temperature simultaneously, formation contains the gas of a large amount of hydrogen spectrums, consume the energy of electric arc and cool off electric arc, further impel arc resistance increase, arc voltage to rise.When arc voltage during greater than the power frequency recovery voltage at contact two ends, electric arc has just been extinguished.
The beneficial effects of the utility model are, can improve the short circuit breaking current ability of miniature circuit breaker, and simple in structure, easy installation and reliable.
Below in conjunction with drawings and Examples the utility model is further specified.
Description of drawings
Fig. 1 is the structure chart of the utility model embodiment;
Fig. 2 is the side surface configurations figure of the utility model embodiment.
Embodiment
In Fig. 1, arc extinguishing grid pieces 2 positive and negative alternate insertions successively in the arc extinguishing case 1, arc extinguishing grid pieces 2 is staggered, and becomes " V " shape groove to stagger mutually between sheet and the sheet, and the pin on arc extinguishing grid pieces 2 both sides inserts in the corresponding hole, arc extinguishing case 1 both sides.
In embodiment illustrated in fig. 2, with all the pin riveting jails in the arc extinguishing grid pieces 2 insertion arc extinguishing cases 1.
Claims (1)
1, a kind of arc-control device of miniature circuit breaker mainly is made up of arc extinguishing case (1) and arc extinguishing grid pieces (2), it is characterized in that: be staggered between described arc extinguishing grid pieces sheet, and become " V " shape groove to stagger mutually between sheet and the sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620008964 CN2938361Y (en) | 2006-03-18 | 2006-03-18 | Arc-control device of small circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620008964 CN2938361Y (en) | 2006-03-18 | 2006-03-18 | Arc-control device of small circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2938361Y true CN2938361Y (en) | 2007-08-22 |
Family
ID=38362387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620008964 Expired - Lifetime CN2938361Y (en) | 2006-03-18 | 2006-03-18 | Arc-control device of small circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2938361Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101908450A (en) * | 2010-07-20 | 2010-12-08 | 中国船舶重工集团公司第七一二研究所 | Direct current quick breaker |
| CN101447346B (en) * | 2007-11-30 | 2012-02-08 | 西门子公司 | Arc-extinguishing device for electric switch |
| CN103366989A (en) * | 2012-04-05 | 2013-10-23 | Abb瑞士有限公司 | Arc extinguishing device and installation switch device equipped with same |
| CN102138193B (en) * | 2008-06-27 | 2014-01-22 | 黑格电子股份有限公司 | Arc extinction cage |
-
2006
- 2006-03-18 CN CN 200620008964 patent/CN2938361Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101447346B (en) * | 2007-11-30 | 2012-02-08 | 西门子公司 | Arc-extinguishing device for electric switch |
| CN102138193B (en) * | 2008-06-27 | 2014-01-22 | 黑格电子股份有限公司 | Arc extinction cage |
| CN101908450A (en) * | 2010-07-20 | 2010-12-08 | 中国船舶重工集团公司第七一二研究所 | Direct current quick breaker |
| CN101908450B (en) * | 2010-07-20 | 2012-07-18 | 中国船舶重工集团公司第七一二研究所 | Direct current quick breaker |
| CN103366989A (en) * | 2012-04-05 | 2013-10-23 | Abb瑞士有限公司 | Arc extinguishing device and installation switch device equipped with same |
| EP2648199A3 (en) * | 2012-04-05 | 2014-03-12 | ABB Schweiz AG | Arc quenching device and installation switch device with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20070822 |
|
| EXPY | Termination of patent right or utility model |