CN102368461A - Miniature circuit breaker - Google Patents
Miniature circuit breaker Download PDFInfo
- Publication number
- CN102368461A CN102368461A CN2011102685743A CN201110268574A CN102368461A CN 102368461 A CN102368461 A CN 102368461A CN 2011102685743 A CN2011102685743 A CN 2011102685743A CN 201110268574 A CN201110268574 A CN 201110268574A CN 102368461 A CN102368461 A CN 102368461A
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- Prior art keywords
- arc
- circuit breaker
- communicated
- housing
- miniature circuit
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- Arc-Extinguishing Devices That Are Switches (AREA)
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
The invention belongs to the low-voltage electrical apparatus field, relate in particular to a kind of miniature circuit breaker.
Background technology
Miniature circuit breaker is the terminal equipment of distribution line, and it is little to have a volume, and characteristics such as modularization are mainly used in switch and protection circuit.Usually have instantaneous protection and delay protection, inside mainly is made up of instantaneous system, delayed time system, operating mechanism and arc quenching system.Wherein mainly to act on be to make the electric arc that produces in the circuit breaker interrupting process get into arc control device through the striking sheet rapidly to arc quenching system, and absorb and discharge heat and the gases at high pressure that electric arc produces.The quality of arc quenching system has determined the breaking capacity of circuit breaker.The steam vent of the arc control device back of existing miniature circuit breaker directly connects the exhaust passage, a large amount of gases that when disjunction, produce need be in this narrower passage can mistake, the air pressure of generation is very big like this, electric arc is got into arc control device smoothly possibly produce harmful effect.
Summary of the invention
The shortcoming that is not easy to get into arc control device because of the high electric arc of air pressure when the objective of the invention is to overcome the inherent disjunction of the arc control device of existing miniature circuit breaker provides a kind of gas pressure when having reduced disjunction, makes electric arc get into the easier miniature circuit breaker of arc control device.
For the technical scheme that reaches goal of the invention the present invention employing is:
A kind of miniature circuit breaker; Comprise housing; Instantaneous system, operating mechanism, delayed time system and arc quenching system are installed in the said housing, and said arc quenching system comprises arc angle, striking sheet, arc control device, and said arc control device are communicated with gas vent; It is characterized in that: be provided with the gas buffer chamber that is communicated with arc control device in the said housing, said gas buffer chamber is communicated with gas vent.
Further, be provided with a plurality of gas buffer chambers that are communicated with it in the said housing.
Further, said gas buffer chamber is located at the rear side of arc control device.
Further, said arc control device are communicated with gas vent through first exhaust passage.
Further, said gas buffer chamber is communicated with gas vent through second exhaust passage.
Further, said operating mechanism is positioned at the upper right side of housing, and said instantaneous system is positioned at the middle part of housing, and said delayed time system is positioned at the right lower quadrant of housing, and said arc quenching system is positioned at the left middle and lower part of housing.
Technical conceive of the present invention is provided with the gas buffer chamber in the arc control device rear end, and the gas separations of discharging from arc control device is two parts; A part gets into first exhaust passage; A part is not introduced into the gas buffer chamber, alleviates the back at air pressure and gets into second exhaust passage, the hyperbar that produces in the time of can reducing disjunction effectively like this; Reduce resistance, make circuit breaker have quick arc extinguishing function arc motion.
Beneficial effect of the present invention: the gas pressure when reducing disjunction, it is easier to make electric arc get into arc control device, makes circuit breaker have the function of quick arc extinguishing.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Come the present invention is further specified below in conjunction with specific embodiment, but do not limit the invention to these embodiments.One skilled in the art would recognize that the present invention contained in claims scope all alternatives, improvement project and the equivalents that possibly comprise.
With reference to Fig. 1; A kind of miniature circuit breaker comprises housing, and instantaneous system 2, operating mechanism 1, delayed time system 3 and arc quenching system 4 are installed in the said housing; Said arc quenching system 4 comprises arc angle 41, striking sheet 42, arc control device 43; Said arc control device 43 are communicated with gas vent, are provided with the gas buffer chamber 44 that is communicated with arc control device 43 in the said housing, and said gas buffer chamber 44 is communicated with gas vent.
Be provided with a plurality of gas buffer chambers 44 that are communicated with it in the said housing.
Said gas buffer chamber 44 is located at the rear side of arc control device 43.
Said arc control device 43 are communicated with gas vent through first exhaust passage 45.
Said gas buffer chamber 44 is communicated with gas vent through second exhaust passage 46.
Said operating mechanism 1 is positioned at the upper right side of housing, and said instantaneous system 2 is positioned at the middle part of housing, and said delayed time system 3 is positioned at the right lower quadrant of housing, and said arc quenching system 4 is positioned at the left middle and lower part of housing.
Technical conceive of the present invention is provided with gas buffer chamber 44 in arc control device 43 rear ends, and the gas separations of discharging from arc control device 43 is two parts; A part gets into first exhaust passage 45; A part is not introduced into gas buffer chamber 44, alleviates the back at air pressure and gets into second exhaust passage 46, the hyperbar that produces in the time of can reducing disjunction effectively like this; Reduce resistance, make circuit breaker have quick arc extinguishing function arc motion.
Claims (6)
1. miniature circuit breaker; Comprise housing; Instantaneous system, operating mechanism, delayed time system and arc quenching system are installed in the said housing, and said arc quenching system comprises arc angle, striking sheet, arc control device, and said arc control device are communicated with gas vent; It is characterized in that: be provided with the gas buffer chamber that is communicated with arc control device in the said housing, said gas buffer chamber is communicated with gas vent.
2. a kind of miniature circuit breaker according to claim 1 is characterized in that: be provided with a plurality of gas buffer chambers that are communicated with it in the said housing.
3. a kind of miniature circuit breaker according to claim 1 and 2 is characterized in that: said gas buffer chamber is located at the rear side of arc control device.
4. a kind of miniature circuit breaker according to claim 3 is characterized in that: said arc control device are communicated with gas vent through first exhaust passage.
5. a kind of miniature circuit breaker according to claim 4 is characterized in that: said gas buffer chamber is communicated with gas vent through second exhaust passage.
6. a kind of miniature circuit breaker according to claim 5; It is characterized in that: said operating mechanism is positioned at the upper right side of housing; Said instantaneous system is positioned at the middle part of housing, and said delayed time system is positioned at the right lower quadrant of housing, and said arc quenching system is positioned at the left middle and lower part of housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102685743A CN102368461A (en) | 2011-09-13 | 2011-09-13 | Miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102685743A CN102368461A (en) | 2011-09-13 | 2011-09-13 | Miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102368461A true CN102368461A (en) | 2012-03-07 |
Family
ID=45761020
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102685743A Pending CN102368461A (en) | 2011-09-13 | 2011-09-13 | Miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102368461A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102655066A (en) * | 2012-03-31 | 2012-09-05 | 温州奥来电器有限公司 | High-breaking-capacity energy-storage-type biaxial miniature circuit breaker |
| CN104835701A (en) * | 2015-06-09 | 2015-08-12 | 厦门宏发开关设备有限公司 | Breaker with arc extinguishing device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0462026A1 (en) * | 1990-06-15 | 1991-12-18 | Schneider Electric Sa | Miniature circuit breaker with outlet for cut-off gases |
| CN101170034A (en) * | 2007-11-27 | 2008-04-30 | Tcl低压电器(无锡)有限公司 | Small breaker |
| CN201829383U (en) * | 2009-11-27 | 2011-05-11 | Abb股份公司 | Arc extinguisher and switchgear |
| CN202259107U (en) * | 2011-09-13 | 2012-05-30 | 上海诺雅克电气有限公司 | Small breaker |
-
2011
- 2011-09-13 CN CN2011102685743A patent/CN102368461A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0462026A1 (en) * | 1990-06-15 | 1991-12-18 | Schneider Electric Sa | Miniature circuit breaker with outlet for cut-off gases |
| CN101170034A (en) * | 2007-11-27 | 2008-04-30 | Tcl低压电器(无锡)有限公司 | Small breaker |
| CN201829383U (en) * | 2009-11-27 | 2011-05-11 | Abb股份公司 | Arc extinguisher and switchgear |
| CN202259107U (en) * | 2011-09-13 | 2012-05-30 | 上海诺雅克电气有限公司 | Small breaker |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102655066A (en) * | 2012-03-31 | 2012-09-05 | 温州奥来电器有限公司 | High-breaking-capacity energy-storage-type biaxial miniature circuit breaker |
| CN104835701A (en) * | 2015-06-09 | 2015-08-12 | 厦门宏发开关设备有限公司 | Breaker with arc extinguishing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120307 |