CN201408682Y - Exhaust structure for small-sized circuit breaker - Google Patents
Exhaust structure for small-sized circuit breaker Download PDFInfo
- Publication number
- CN201408682Y CN201408682Y CN 200920071577 CN200920071577U CN201408682Y CN 201408682 Y CN201408682 Y CN 201408682Y CN 200920071577 CN200920071577 CN 200920071577 CN 200920071577 U CN200920071577 U CN 200920071577U CN 201408682 Y CN201408682 Y CN 201408682Y
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- shell
- cover plate
- exhaust
- baffle plate
- 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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Abstract
An exhaust structure for small-sized circuit breaker comprises a shell of a circuit breaker, a baffle plate and a cover plate, wherein arc extinguishing chambers are arranged in both the shell of thecircuit breaker and the cover plate, the cover plate is arranged on the shell of the circuit breaker, exhaust vents are arranged on tail portions of the arc extinguishing chambers, an exhaust cavity is arranged in the shell of the circuit breaker, the exhaust cavity is provided with an opening in the lateral face of the shell of the circuit breaker, the baffle plate is covered on the opening, a small hole is arranged on the bottom side of the exhaust cavity, the small hole is communicated with the exhaust vents on the tail portions of the arc extinguishing chambers, and auxiliary exhaust ventsare arranged on the surface of the cover plate and are communicated with the arc extinguishing chambers. When the circuit breaker is broken, electric arcs are generated between contacts, electric arcenergy is discharged to the external through the exhaust cavity and the auxiliary exhaust vents on the cover plate to guarantee that the inside of the circuit breaker can not be damaged by short circuit energy. When extreme short circuit electric current is generated, the electric arc energy can flush away the baffle plate on the shell, and is discharged rapidly through the opening of the exhaustcavity, thereby guaranteeing that the products can not be damaged by extremely strong electric arc energy.
Description
Technical field:
The utility model relates to electric field, relates in particular to miniature circuit breaker, particularly a kind of exhaust structure that is used for miniature circuit breaker.
Background technology:
In the prior art, miniature circuit breaker is provided with steam vent in the arc control device bottom side, by steam vent arc energy is discharged.But vent structure is less, so the efficient of discharged arc energy is not high, and the short circuit breaking capacity of circuit breaker is lower.
Summary of the invention:
The purpose of this utility model is to provide a kind of exhaust structure that is used for miniature circuit breaker, and the described this exhaust structure that is used for miniature circuit breaker will solve the low technical problem of the middle-size and small-size circuit breaker discharged arc of prior art energy efficiency.
This exhaust structure of miniature circuit breaker that is used for of the present utility model is by Shell of circuit breaker, baffle plate and cover plate constitute, be provided with arc control device in described Shell of circuit breaker and the cover plate, cover plate is arranged on the Shell of circuit breaker, wherein, the afterbody of described arc control device is provided with steam vent, be provided with a discharge chamber in the Shell of circuit breaker, described discharge chamber is provided with an opening in the side of Shell of circuit breaker, described baffle plate covers on the described opening, the bottom side of discharge chamber is provided with an aperture, described aperture is communicated with the steam vent of arc control device afterbody, and the surface of cover plate is provided with auxiliary exhaust ports, and described auxiliary exhaust ports is communicated with arc control device.
Further, the number of described auxiliary exhaust ports is 4.
Operation principle of the present utility model is: when circuit breaker disconnects, produce electric arc between contact, the part energy of electric arc is discharged into the outside by the discharge chamber of Shell of circuit breaker and the auxiliary exhaust ports on the cover plate, guarantees that circuit breaker inside is not subjected to the damage of short circuit energy.When limit short circuit current took place, extremely strong arc energy can be washed the baffle plate on the housing open, made arc energy rapidly by the discharging of the discharge chamber opening part on the housing, guaranteed that product is not subjected to the damage of extremely strong arc energy.
The utility model is compared with prior art, and its effect is actively with tangible.The utility model has increased discharge chamber and detachable baffle plate in the exhaust structure of miniature circuit breaker, strengthened the electric arc discharge capacity of circuit breaker, avoids circuit breaker inside to be subjected to extremely strong arc energy and damages, and has prolonged useful life.
Description of drawings:
Fig. 1 is the front view with miniature circuit breaker of the utility model vent structure.
Fig. 2 is the end view with miniature circuit breaker of the utility model vent structure.
Fig. 3 is the schematic diagram of A-A direction among Fig. 2.
Fig. 4 is the schematic diagram of B-B direction among Fig. 2.
Embodiment:
Embodiment 1:
As Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, the exhaust structure that is used for miniature circuit breaker of the present utility model, by Shell of circuit breaker 1, baffle plate 6 and cover plate 4 constitute, be provided with arc control device 3 in described Shell of circuit breaker 1 and the cover plate 4, cover plate 4 is arranged on the Shell of circuit breaker 1, wherein, the afterbody of described arc control device 3 is provided with steam vent 8, be provided with a discharge chamber 2 in the Shell of circuit breaker 1, described discharge chamber 2 is provided with an opening in the side of Shell of circuit breaker 1, described baffle plate 6 covers on the described opening, the bottom side of discharge chamber 2 is provided with an aperture, described aperture is communicated with the steam vent 8 of arc control device 3 afterbodys, and the surface of cover plate 4 is provided with auxiliary exhaust ports 5, and described auxiliary exhaust ports 5 is communicated with arc control device 3.
Further, the number of described auxiliary exhaust ports 5 is 4.
In an embodiment of the present utility model, described baffle plate 6 is connected with Shell of circuit breaker 1 by buckle, baffle plate 6 when being subjected to certain outside active force and Shell of circuit breaker break away from.
Perhaps, baffle plate 6 is an overall structure with Shell of circuit breaker 1, is provided with the disengaging line along baffle plate 6 outline lines.
Claims (2)
1. exhaust structure that is used for miniature circuit breaker, by Shell of circuit breaker, baffle plate and cover plate constitute, be provided with arc control device in described Shell of circuit breaker and the cover plate, cover plate is arranged on the Shell of circuit breaker, it is characterized in that: the afterbody of described arc control device is provided with steam vent, be provided with a discharge chamber in the Shell of circuit breaker, described discharge chamber is provided with an opening in the side of Shell of circuit breaker, described baffle plate covers on the described opening, the bottom side of discharge chamber is provided with an aperture, described aperture is communicated with the steam vent of arc control device afterbody, and the surface of cover plate is provided with auxiliary exhaust ports, and described auxiliary exhaust ports is communicated with arc control device.
2. the exhaust structure that is used for miniature circuit breaker as claimed in claim 1 is characterized in that: the number of described auxiliary exhaust ports is 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920071577 CN201408682Y (en) | 2009-05-04 | 2009-05-04 | Exhaust structure for small-sized circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200920071577 CN201408682Y (en) | 2009-05-04 | 2009-05-04 | Exhaust structure for small-sized circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201408682Y true CN201408682Y (en) | 2010-02-17 |
Family
ID=41679626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200920071577 Expired - Lifetime CN201408682Y (en) | 2009-05-04 | 2009-05-04 | Exhaust structure for small-sized circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201408682Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102299014A (en) * | 2010-06-22 | 2011-12-28 | 西门子公司 | Switch, in particular switch disconnector for low voltages |
-
2009
- 2009-05-04 CN CN 200920071577 patent/CN201408682Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102299014A (en) * | 2010-06-22 | 2011-12-28 | 西门子公司 | Switch, in particular switch disconnector for low voltages |
| US8575504B2 (en) | 2010-06-22 | 2013-11-05 | Siemens Aktiengesellschaft | Switch, in particular switch disconnector for low voltages |
| CN102299014B (en) * | 2010-06-22 | 2014-10-22 | 西门子公司 | Switch, in particular switch disconnector for low voltages |
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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: 20100217 |
|
| CX01 | Expiry of patent term |