CN101320663A - Arc extinguishing chamber for breaker - Google Patents
Arc extinguishing chamber for breaker Download PDFInfo
- Publication number
- CN101320663A CN101320663A CNA2008100226182A CN200810022618A CN101320663A CN 101320663 A CN101320663 A CN 101320663A CN A2008100226182 A CNA2008100226182 A CN A2008100226182A CN 200810022618 A CN200810022618 A CN 200810022618A CN 101320663 A CN101320663 A CN 101320663A
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- arc
- arc extinguishing
- plate
- slot
- notch
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Abstract
The invention relates to an arc extinguish chamber suitable for a limiting type minitype breaker having high capability of breaking short circuit, comprising a left side plate, a right side plate and an installation shell formed by a rear plate and characterized in that the left sidewall of the left side plate is provided with a plurality of convex edges, two adjacent convex edges forms a slot matched with the slot, a vent-hole is provided on the rear plate, groups of grid sheets are spliced within each group of mutually matched slots, plate bodies located at a top layer and a bottom layer in each group of the grid sheets are all arc extinguish grid sheets which are provided with notches, and an insulating plate is also provided with the notches, the notches on the arc extinguish grid sheets have the depth lower than that of the notches on the insulating plate. The invention can efficiently inhibit the phenomenon of re-puncture of the electric arc without change the volume of the original arc extinguish chamber, thereby boosting the breaking ability of the limiting type minitype breaker.
Description
Technical field
The present invention relates to a kind of low-voltage miniature circuit breaker arc control device, especially a kind of current-limiting type miniature circuit breaker arc control device that are applicable to that short circuit breaking capacity is high.
Background technology
At present, miniature circuit breaker often 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 at least one side plate 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 a kind of electromagnetic force electric arc is pulled to arc control device, to the cutting apart and cool off of electric arc, arc resistance increases by the grid sheet, thereby arc voltage also improves, when arc voltage reached certain value, electric arc will be extinguished.But utilize grid sheet arc extinguishing, the electric arc re-breakdown phenomenon is more serious, causes arc voltage to fall rise with arc current, thereby prolongs the arcing time, and the current limiting performance variation influences the breaking capacity of miniature circuit breaker.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide a kind of under the situation that does not change original arc control device volume, can effectively suppress the electric arc re-breakdown phenomenon, improve the arc extinguishing chamber for breaker of the breaking capacity of current-limiting type miniature circuit breaker.
According to technical scheme provided by the invention, described arc extinguishing chamber for breaker, comprise left plate, the installation housing that right plate and rear board form, the right side wall of left plate is provided with some fins, adjacent two fins form slot, the left side wall of right plate is provided with some fins, adjacent two fins form the slot that cooperates with slot, offer venthole on the plate in the back, grafting grid sheet group in slot that every assembly is closed and slot, every group of grid sheet group includes arc extinguishing grid pieces and the insulation board that is provided with at interval, and the plate body that is positioned at top layer and bottom in every group of grid sheet group is arc extinguishing grid pieces, offer notch on the arc extinguishing grid pieces, also offer notch on the insulation board, and the degree of depth of the notch offered of arc extinguishing grid pieces is less than the degree of depth of the notch of offering on the insulation board.
The openend of described notch is the uncovered shape of "/" shape.
The present invention can effectively suppress the electric arc re-breakdown phenomenon under the situation that does not change original arc control device volume, improve the breaking capacity of current-limiting type miniature circuit breaker.
Description of drawings
Fig. 1 is an overall structure schematic diagram of the present invention.
Fig. 2 is the structural representation of the installation housing that formed by left plate, right plate and rear board.
Fig. 3 is the structural representation of the arc extinguishing grid pieces among the present invention.
Fig. 4 is the structural representation of the insulation board among the present invention.
Embodiment
The invention will be further described below in conjunction with concrete drawings and Examples.
As shown in the figure: arc control device of the present invention mainly are made up of left plate 1, right plate 2, fin 3, fin 4, slot 5, slot 6, rear board 7, venthole 8, grid sheet group 9, arc extinguishing grid pieces 10, insulation board 11, notch 12, notch 13 etc.
Arc extinguishing chamber for breaker of the present invention, comprise left plate 1, the installation housing that right plate 2 and rear board 7 form, the right side wall of left plate 1 is provided with some fins 3, adjacent two fins 3 form slot 5, the left side wall of right plate 2 is provided with some fins 4, adjacent two fins 4 form the slot 6 that cooperates with slot 5, offer venthole 8 on the plate 7 in the back, grafting grid sheet group 9 in slot that every assembly is closed 5 and slot 6, every group of grid sheet group 9 includes arc extinguishing grid pieces 10 and the insulation board 11 that is provided with at interval, and the plate body that is positioned at top layer and bottom in every group of grid sheet group 9 is arc extinguishing grid pieces 10, offer notch 12 on the arc extinguishing grid pieces 10, also offer notch 13 on the insulation board 11, and the degree of depth of the notch 12 offered of arc extinguishing grid pieces 10 is less than the degree of depth of the notch of offering on the insulation board 11 13.
The openend of notch 12 is the uncovered shape of "/" shape; The openend of described notch 13 is the uncovered shape of "/" shape.
As shown in Figure 1, arc extinguishing grid pieces 10 and insulation board 11 are alternately fitted and are installed, and form a plurality of grid sheet groups 9, and shown in Figure 3, arc extinguishing grid pieces 10 is a ferromagnetic material, and arc extinguishing grid pieces 10 is provided with notch 12.This notch 12 is formed the junction smooth transition by "/" type open section and rectangular aperture section.Shown in Figure 2, insulation board 11 is the high-temperature insulation gas exhausted material, also offers notch 13 on the insulation board 11, and described notch 13 is formed the junction smooth transition by "/" type open section and rectangular aperture section.The openend shape of arc extinguishing grid pieces 10 and insulation board 11 is consistent, and the degree of depth of notch 12 is less than the degree of depth of notch 13.Grid sheet group 9 is directly inserted the slot 5 and slot 6 that housing is installed, and slot 5 has chamfering with the insertion end of slot 6, is convenient to the insertion of grid sheet group 9.The spacing of the fin 4 spacings decision grid sheet group 9 that fin 3 spacings that the right side wall of left plate 1 is provided with and the left side wall of right plate 2 are provided with, the width of fin 3 and fin 4 does not influence electric arc and enters arc control device, and with arc extinguishing grid pieces 10 sufficient the contact is arranged.Rear board 7 rear sides have a plurality of rectangular openings, cooperate with the installation site of arc extinguishing grid pieces 10, form the venthole 8 of arc control device.
Each grid sheet group 9 of the present invention all forms one or more narrow slits, arc control device combine the design feature of grid sheet arc extinguishing and narrow slit arc extinguishing, when miniature circuit breaker produces electric arc in breaking course, arc ignition system is introduced arc control device with electric arc, arc extinguishing grid pieces 10 is divided into electric arc the short arc of multistage series connection, the gas cooled electric arc arc column that housing produces is installed simultaneously, arc resistance is increased, improve arc voltage.When part electric arc enters the narrow slit structure that is formed by notch 13 in the grid sheet group 9, the reverberation air-flow of arc control device rear end gets clogged.Simultaneously, 11 pairs of electric arcs of insulation board produce cooling effect, reduce the temperature of thermal current.Because insulation board 11 is the high temperature gas exhausted material, absorbed arc energy on the one hand, the gas of Chan Shenging can improve the medium recovery strength of voltage contact area on the other hand, suppresses the re-breakdown phenomenon of electric arc, thereby improves the current limiting performance and the breaking capacity of miniature circuit breaker.
Claims (3)
1, a kind of arc extinguishing chamber for breaker, comprise left plate (1), the installation housing that right plate (2) and rear board (7) form, it is characterized in that: the right side wall of left plate (1) is provided with some fins (3), adjacent two fins (3) form slot (5), the left side wall of right plate (2) is provided with some fins (4), adjacent two fins (4) form the slot (6) that cooperates with slot (5), offer venthole (8) on the plate (7) in the back, grafting grid sheet group (9) in slot (5) that every assembly is closed and slot (6), every group of grid sheet group (9) includes arc extinguishing grid pieces (10) and the insulation board (11) that is provided with at interval, and the plate body that is positioned at top layer and bottom in every group of grid sheet group (9) is arc extinguishing grid pieces (10), offer notch (12) on the arc extinguishing grid pieces (10), also offer notch (13) on the insulation board (11), and the degree of depth of the notch (12) offered of arc extinguishing grid pieces (10) is less than the degree of depth of the notch of offering on the insulation board (11) (13).
2, arc extinguishing chamber for breaker as claimed in claim 1 is characterized in that: the openend of described notch (12) is the uncovered shape of "/" shape.
3, arc extinguishing chamber for breaker as claimed in claim 1 is characterized in that: the openend of described notch (13) is the uncovered shape of "/" shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100226182A CN101320663A (en) | 2008-07-16 | 2008-07-16 | Arc extinguishing chamber for breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100226182A CN101320663A (en) | 2008-07-16 | 2008-07-16 | Arc extinguishing chamber for breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101320663A true CN101320663A (en) | 2008-12-10 |
Family
ID=40180650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100226182A Pending CN101320663A (en) | 2008-07-16 | 2008-07-16 | Arc extinguishing chamber for breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101320663A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005322A (en) * | 2010-12-10 | 2011-04-06 | 武汉长海电气科技开发有限公司 | Switch apparatus arc extinguish chamber |
| CN103426670A (en) * | 2013-09-02 | 2013-12-04 | 浙江大华开关厂 | Breaker contact arc extinguishing system |
| CN103500692A (en) * | 2013-09-30 | 2014-01-08 | 长城电器集团有限公司 | Arc extinguishing device of circuit breaker |
| CN104321847A (en) * | 2012-05-18 | 2015-01-28 | 三菱电机株式会社 | Circuit breaker for direct-current circuit and circuit breaker device for direct-current circuit |
| CN105405707A (en) * | 2015-12-03 | 2016-03-16 | 上海天灵开关厂有限公司 | Gas-insulated load switch and arc extinguishing device thereof |
| CN109036906A (en) * | 2018-09-17 | 2018-12-18 | 美高电气科技有限公司 | A kind of electric arc divided system |
| CN110739166A (en) * | 2018-07-18 | 2020-01-31 | Ls产电株式会社 | Arc extinguishing device of circuit breaker for wiring |
| CN117727595A (en) * | 2024-02-07 | 2024-03-19 | 温州华嘉电器有限公司 | Arc extinguishing chamber of circuit breaker |
| CN117727595B (en) * | 2024-02-07 | 2024-04-26 | 温州华嘉电器有限公司 | Arc extinguishing chamber of circuit breaker |
-
2008
- 2008-07-16 CN CNA2008100226182A patent/CN101320663A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005322B (en) * | 2010-12-10 | 2013-01-30 | 武汉长海电气科技开发有限公司 | Switch apparatus arc extinguish chamber |
| CN102005322A (en) * | 2010-12-10 | 2011-04-06 | 武汉长海电气科技开发有限公司 | Switch apparatus arc extinguish chamber |
| CN104321847B (en) * | 2012-05-18 | 2016-08-31 | 三菱电机株式会社 | DC circuit circuit-breaker and DC circuit circuit breaking apparatus |
| CN104321847A (en) * | 2012-05-18 | 2015-01-28 | 三菱电机株式会社 | Circuit breaker for direct-current circuit and circuit breaker device for direct-current circuit |
| CN103426670A (en) * | 2013-09-02 | 2013-12-04 | 浙江大华开关厂 | Breaker contact arc extinguishing system |
| CN103426670B (en) * | 2013-09-02 | 2015-06-24 | 浙江大华电气有限公司 | Breaker contact arc extinguishing system |
| CN103500692A (en) * | 2013-09-30 | 2014-01-08 | 长城电器集团有限公司 | Arc extinguishing device of circuit breaker |
| CN105405707A (en) * | 2015-12-03 | 2016-03-16 | 上海天灵开关厂有限公司 | Gas-insulated load switch and arc extinguishing device thereof |
| CN110739166A (en) * | 2018-07-18 | 2020-01-31 | Ls产电株式会社 | Arc extinguishing device of circuit breaker for wiring |
| CN110739166B (en) * | 2018-07-18 | 2022-03-25 | Ls产电株式会社 | Arc extinguishing device of circuit breaker for wiring |
| CN109036906A (en) * | 2018-09-17 | 2018-12-18 | 美高电气科技有限公司 | A kind of electric arc divided system |
| CN117727595A (en) * | 2024-02-07 | 2024-03-19 | 温州华嘉电器有限公司 | Arc extinguishing chamber of circuit breaker |
| CN117727595B (en) * | 2024-02-07 | 2024-04-26 | 温州华嘉电器有限公司 | Arc extinguishing chamber of circuit breaker |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081210 |