CN216902779U - Arc extinguish chamber and miniature circuit breaker - Google Patents
Arc extinguish chamber and miniature circuit breaker Download PDFInfo
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- CN216902779U CN216902779U CN202220132528.4U CN202220132528U CN216902779U CN 216902779 U CN216902779 U CN 216902779U CN 202220132528 U CN202220132528 U CN 202220132528U CN 216902779 U CN216902779 U CN 216902779U
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Abstract
The utility model relates to an arc extinguish chamber and a miniature circuit breaker, which comprise side plates at two sides, wherein an installation space for installing a plurality of arc extinguish grid pieces is formed between the side plates at the two sides, each arc extinguish grid piece is provided with an arc extinguish end opposite to a moving contact, the arc extinguish ends of the arc extinguish grid pieces are arranged in a V shape, and the angle of rotation of the V-shaped arrangement is 20-80 degrees. By adopting the scheme, the utility model provides the arc extinguishing chamber with the arc extinguishing effect improved.
Description
Technical Field
The utility model relates to the field of miniature circuit breakers, in particular to an arc extinguish chamber and a miniature circuit breaker.
Background
The circuit breaker is a mechanical switch electric appliance which can connect, bear and break current under normal circuit conditions and can also connect, bear and break current for a certain time under specified abnormal circuit conditions. The device is mainly used for distributing electric energy and protecting circuits and power supply equipment from damage caused by faults such as overload, undervoltage, short circuit and single-phase grounding, and can be used for infrequent switching of the circuits. The circuit breaker is usually provided with an arc extinguishing chamber, and the arc extinguishing chamber has the main function of quickly extinguishing the moving contact and the static contact when the moving contact and the static contact are switched off to generate electric arcs, and realizes the arc extinguishing function.
Chinese utility model with application number CN201620257817.1 discloses a miniature circuit breaker, its explosion chamber is "one" font explosion chamber, and the arc extinguishing bars piece of explosion chamber is linear arrangement promptly, and this kind of mode is because the arc extinguishing route is short, arc extinguishing bars piece is small in quantity, so the arc extinguishing effect is limited.
For improving the arc extinguishing effect, chinese utility model that application number is 202121330737.1 discloses a chinese utility model discloses a miniature circuit breaker, its explosion chamber be "L" font explosion chamber, and the arc extinguishing bars piece of explosion chamber is "L" font and arranges promptly, has effectively increased arc extinguishing route and arc extinguishing bars piece quantity, still can't satisfy current demand.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model aims to provide an arc extinguishing chamber with an improved arc extinguishing effect.
In order to realize the purpose, the utility model provides the following technical scheme: including the curb plate of both sides, both sides the curb plate between form the installation space that supplies a plurality of arc extinguishing bars piece installation, each the arc extinguishing bars piece have with the relative arc extinguishing end of moving contact, its characterized in that: the arc extinguishing ends of the arc extinguishing grid pieces are arranged in a V shape, and the angle of the V-shaped arrangement is 20-80 DEG
Through adopting above-mentioned technical scheme, the arc extinguishing end that is the V-arrangement can effectively increase arc extinguishing route and the same volume miniature circuit breaker and contain arc extinguishing bars piece quantity to preferred 20 ~80 angle scope, thereby guarantee the arc extinguishing effect.
The utility model is further configured to: the arc-extinguishing grid plate comprises a first grid plate group positioned on one V-shaped side of the V-shaped arrangement, a second grid plate group positioned at a corner of the V-shaped arrangement and a third grid plate group positioned on the other V-shaped side of the V-shaped arrangement, and the first grid plate group and the third grid plate group at least comprise two parallel arc-extinguishing grid plates.
By adopting the technical scheme, the arc extinguishing grid pieces are grouped, and arc extinguishing effects are further optimized according to different positions of the V-shaped arrangement and the arc extinguishing grid pieces in different arrangements.
The utility model is further configured to: the arc extinguishing grid pieces of the first grid piece group and the third grid piece group gradually approach the second grid piece group along the direction from the arc extinguishing end to the other end.
Through adopting above-mentioned technical scheme, the air current field in arc extinguishing area has certain influence to the electric arc and puts out the arc, so the orientation of the arc extinguishing bars piece of adjustment first grid group and third grid group makes the gas flow to the slope of second grid group to be convenient for the gas flow to the explosion chamber middle part and concentrate unified discharge from the air outlet.
The utility model is further configured to: the second grid sheet group sequentially comprises a first sub-grid sheet group, a second sub-grid sheet group and a third sub-grid sheet group from the first grid sheet group to the third grid sheet group, the first grid sheet group and the third grid sheet group at least comprise two parallel arc-extinguishing grid sheets, the first sub-grid sheet group and the third sub-grid sheet group at least comprise two parallel arc-extinguishing grid sheets, the arc-extinguishing grid sheets of the second sub-grid sheet group are inclined one by one and gradually changed from the direction parallel to the arc-extinguishing grid sheets of the second sub-grid sheet group to the direction parallel to the arc-extinguishing grid sheets of the third sub-grid sheet group.
By adopting the technical scheme, the arrangement of the second grid plate groups is further refined, the matching is carried out according to different positions of the V-shaped arrangement, and the arc extinguishing effect is further optimized.
The utility model is further configured to: the arc extinguishing grid plates of the first sub-grid plate group and the third sub-grid plate group gradually approach the second sub-grid plate group along the direction from the arc extinguishing end to the other end.
Through adopting above-mentioned technical scheme, the air current field in arc extinguishing area has certain influence to the electric arc and puts out the arc, so the orientation of the arc extinguishing bars piece of adjustment first branch grid group and third branch grid group makes the gas flow to the slope of second grid group to be convenient for the gas flow to the explosion chamber middle part and concentrate unified discharge from the air outlet.
The utility model is further configured to: the included angle between the arc-extinguishing grid plates of the first sub-grid plate group and the arc-extinguishing grid plates of the first grid plate group and the included angle between the arc-extinguishing grid plates of the third sub-grid plate group and the arc-extinguishing grid plates of the third grid plate group are 0-10 degrees.
By adopting the technical scheme, the included angle between the arc-extinguishing grid piece of the first grid-dividing plate group and the included angle between the arc-extinguishing grid piece of the third grid-dividing plate group and the arc-extinguishing grid piece of the third grid-dividing plate group are limited, and the arrangement is more reasonable while the air flow guiding effect is ensured.
The utility model is further configured to: each arc extinguishing bars piece be located the arc extinguishing end and be provided with the arc extinguishing recess, adjacent the arc extinguishing recess bottom of arc extinguishing bars piece be about crisscross the arranging or crisscross the arranging from top to bottom.
Through adopting above-mentioned technical scheme, arc extinguishing recess bottom of crisscross arranging or crisscross arranging from top to bottom about can further strengthen the arc extinguishing effect.
The utility model also provides a miniature circuit breaker adopting the arc extinguish chamber, and provides the following technical scheme: the novel air-conditioner comprises a housin, the casing in be provided with arc extinguishing area and air outlet, arc extinguishing area to the protruding extension region that forms and air outlet UNICOM of air outlet, both sides the curb plate be the V-arrangement to form the V-arrangement explosion chamber that is located the arc extinguishing area with the combination of arc extinguishing bars piece, the V-arrangement pointed end of this V-arrangement explosion chamber is relative with the air outlet and extends to the extension region.
Through adopting above-mentioned technical scheme, adjust the curb plate to the V shape unanimous with the arc extinguishing bars piece to forming the arc extinguishing region to the air outlet is protruding, makes the V-arrangement point end of V shape extend to the extension region, will concentrate the air current between the arc extinguishing bars piece after when providing the inside space utilization of casing, and the air outlet is discharged in unison, improves the arc extinguishing effect.
Drawings
FIG. 1 is a perspective view of an arc chute;
FIG. 2 is a schematic diagram of the arrangement of arc chute plates in the arc extinguishing chamber;
FIG. 3 is a schematic diagram of the arrangement of the gate groups;
fig. 4 is a schematic diagram of an included angle between an arc chute plate of the first split gate group and an included angle between an arc chute plate of the third split gate group and an arc chute plate of the third split gate group;
FIG. 5 is a first schematic view of the arrangement of arc extinguishing grooves;
FIG. 6 is a first schematic view of the arrangement of arc extinguishing grooves;
fig. 7 is a schematic structural view of the miniature circuit breaker.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1-2, the utility model discloses an arc extinguishing chamber, which comprises side plates 1 on two sides, wherein an installation space for installing a plurality of arc extinguishing grid pieces 2 is formed between the side plates 1 on two sides, the arc extinguishing grid pieces 2 are inserted into the side plates through insertion, each arc extinguishing grid piece 2 is provided with an arc extinguishing end 21 opposite to a moving contact, the arc extinguishing ends 21 of the arc extinguishing grid pieces 2 are arranged in a V shape, the corner angle alpha of the V-shaped arrangement is 20-80 degrees, the number of arc extinguishing grid pieces 2 contained in an arc extinguishing path and a small circuit breaker with the same volume can be effectively increased by the arc extinguishing ends 21 arranged in the V shape, and the angle range of 20-80 degrees is optimized, so that the arc extinguishing effect is ensured.
As shown in fig. 3, the arc-extinguishing grid plates 2 include a first grid plate group 3 located on one V-shaped side of the V-shaped arrangement, a second grid plate group 4 located on a corner of the V-shaped arrangement, and a third grid plate group 5 located on the other V-shaped side of the V-shaped arrangement, the first grid plate group 3 and the third grid plate group 5 at least include two parallel arc-extinguishing grid plates 2, the arc-extinguishing grid plates 2 are grouped, and the arc-extinguishing grid plates 2 arranged in different directions are adapted according to different positions of the V-shaped arrangement, so as to further optimize the arc-extinguishing effect.
The arc extinguishing grid pieces 2 of the first grid piece group 3 and the third grid piece group 5 are gradually close to the second grid piece group 4 along the direction from the arc extinguishing end 21 to the other end, and the airflow field in the arc extinguishing area has certain influence on arc extinguishing, so that the orientation of the arc extinguishing grid pieces 2 of the first grid piece group 3 and the third grid piece group 5 is adjusted, the airflow is inclined towards the second grid piece group 4, and the airflow is conveniently concentrated and uniformly discharged from the air outlet to the middle part of the arc extinguishing chamber.
The second grid group 4 sequentially comprises a first grid piece dividing group 41, a second grid piece dividing group 42 and a third grid piece dividing group 43 from the first grid piece group 3 to the third grid piece group 5, the first grid piece group 3 and the third grid piece group 5 at least comprise two parallel arc-extinguishing grid pieces 2, the first grid piece dividing group 41 and the third grid piece group 43 at least comprise two parallel arc-extinguishing grid pieces 2, the arc-extinguishing grid pieces 2 of the second grid piece dividing group 42 are inclined one by one, the direction parallel to the arc-extinguishing grid pieces 2 of the second grid piece dividing group 42 is gradually changed to the direction parallel to the arc-extinguishing grid pieces 2 of the third grid piece group 43, the arrangement of the second grid piece group 4 is further refined, the specific adaptation is carried out according to different positions of the V-shaped arrangement, and the arc-extinguishing effect is further optimized.
The arc extinguishing grid plates 2 of the first grid splitting group 41 and the third grid splitting group 43 are gradually close to the second grid splitting group 42 along the direction from the arc extinguishing end 21 to the other end, and the airflow field in the arc extinguishing area has certain influence on arc extinguishing, so that the orientation of the arc extinguishing grid plates 2 of the first grid splitting group 41 and the third grid splitting group 43 is adjusted, the airflow is inclined towards the second grid splitting group 4, and the airflow is conveniently concentrated and uniformly discharged from the air outlet to the middle part of the arc extinguishing chamber.
As shown in fig. 4, an included angle between the arc-extinguishing grid plates 2 of the first sub-grid plate group 41 and the arc-extinguishing grid plates 2 of the first grid plate group 3 and an included angle β between the arc-extinguishing grid plates 2 of the third sub-grid plate group 43 and the arc-extinguishing grid plates 2 of the third grid plate group 5 are 0 to 10 degrees, so that the included angles between the arc-extinguishing grid plates 2 of the first sub-grid plate group 41 and the arc-extinguishing grid plates 2 of the first grid plate group 3 and between the arc-extinguishing grid plates 2 of the third sub-grid plate group 43 and the arc-extinguishing grid plates 2 of the third grid plate group 5 are limited, and the arrangement is more reasonable while the air flow guiding effect is ensured.
Each arc extinguishing bars piece 2 is located the end of extinguishing a fire 21 and is provided with arc extinguishing groove 22, and adjacent arc extinguishing bars piece 2's arc extinguishing groove 22 bottom is about crisscross arranging or crisscross arranging from top to bottom, and the arc extinguishing effect can further be strengthened to the arc extinguishing groove 22 bottom of controlling crisscross arranging or crisscross arranging from top to bottom. As shown in fig. 5 and 6, a and b represent the adjacent arc chute plates 2, respectively, a is at the front and b is at the back, wherein the bottom of the arc chute 22 in fig. 5 is staggered up and down, and the bottom of the arc chute 22 in fig. 6 is staggered left and right.
As shown in fig. 7, the present invention further provides a miniature circuit breaker using the arc-extinguishing chamber, which includes a housing 7, wherein the tripping mechanism, the link mechanism, the moving contact, the fixed contact and the wiring mechanism in the housing 7 are consistent with the conventional structure, the housing 7 is provided with an arc-extinguishing region 71 and an air outlet 72, the arc-extinguishing region 71 protrudes toward the air outlet 72 to form an extension region 73 communicated with the air outlet 72, the side plates 1 on both sides are V-shaped and are combined with the arc-extinguishing grid plates 2 to form a V-shaped arc-extinguishing chamber 8 located in the arc-extinguishing region 71, the V-shaped tip 81 of the V-shaped arc-extinguishing chamber 8 is opposite to the air outlet 72 and extends to the extension region 73, the side plates 1 are adjusted to be V-shaped consistent with the arc-extinguishing grid plates 2, the arc-extinguishing region 71 protrudes toward the air outlet 72 to form the extension region 73, the V-shaped tip 81 of the V-shape extends to the extension region 73, the space in the housing is provided, and the utilization rate of the concentrated air flow between the arc-extinguishing grid plates 2 is increased, the air is uniformly discharged from the air outlet 72, and the arc extinguishing effect is improved.
The advantages of the V-shaped arc-extinguishing chamber in the present application are mainly focused on the following aspects: firstly, arc extinguishing paths are effectively increased, and the number of arc extinguishing grid pieces of a single arc extinguishing chamber is increased, so that the arc extinguishing effect is improved; reasonably utilizing the internal space of the shell and improving the space utilization rate; and thirdly, the flow direction of the air flow passing through the arc extinguish chamber is changed, most of the air flow is intensively guided to the air outlet to be discharged, and the arc extinguish effect is not reduced due to the fact that a large amount of whirling air flows exist around the arc extinguish chamber in the traditional structure.
In practical use, the conventional single pole of the arc extinguish chamber (linear type) in the small circuit breaker can reach 200-300V, the single pole of the L-shaped arc extinguish chamber can reach 500V, and the single pole of the V-shaped arc extinguish chamber can reach 750V through an electric life test; in practical applications, a 1500V combiner box may require 5 to 6 conventional arc chute breakers, and if a V-arc chute breaker is used, only 2, 3 are required. Thus, the cost and the space are saved.
Claims (8)
1. The utility model provides an arc extinguishing chamber, includes the curb plate of both sides, both sides the curb plate between form the installation space that supplies a plurality of arc extinguishing bars piece installation, each arc extinguishing bars piece have with the moving contact relative end of putting out an arc, its characterized in that: the arc extinguishing ends of the arc extinguishing grid pieces are arranged in a V shape, and the angle of rotation of the V-shaped arrangement is 20-80 degrees.
2. Arc chute according to claim 1, characterized in that: the arc-extinguishing grid plate comprises a first grid plate group positioned on one V-shaped side of the V-shaped arrangement, a second grid plate group positioned at a corner of the V-shaped arrangement and a third grid plate group positioned on the other V-shaped side of the V-shaped arrangement, and the first grid plate group and the third grid plate group at least comprise two parallel arc-extinguishing grid plates.
3. Arc chute according to claim 2, characterized in that: the arc extinguishing grid pieces of the first grid piece group and the third grid piece group gradually approach the second grid piece group along the direction from the arc extinguishing end to the other end.
4. Arc chute according to claim 2, characterized in that: the second grid sheet group sequentially comprises a first sub-grid sheet group, a second sub-grid sheet group and a third sub-grid sheet group from the first grid sheet group to the third grid sheet group, arc extinguishing grid sheets of the second sub-grid sheet group are inclined one by one and gradually changed from the direction parallel to the arc extinguishing grid sheets of the second sub-grid sheet group to the direction parallel to the arc extinguishing grid sheets of the third sub-grid sheet group.
5. The arc chute of claim 4, characterized in that: the arc extinguishing grid plates of the first sub-grid plate group and the third sub-grid plate group gradually approach the second sub-grid plate group along the direction from the arc extinguishing end to the other end.
6. An arc chute according to claim 5, characterized in that: the included angle between the arc-extinguishing grid plates of the first sub-grid plate group and the arc-extinguishing grid plates of the first grid plate group and the included angle between the arc-extinguishing grid plates of the third sub-grid plate group and the arc-extinguishing grid plates of the third grid plate group are 0-10 degrees.
7. Arc chute according to claim 1, characterized in that: each arc extinguishing bars piece be located the arc extinguishing end and be provided with the arc extinguishing recess, adjacent the arc extinguishing recess bottom of arc extinguishing bars piece be about crisscross the arranging or crisscross the arranging from top to bottom.
8. Circuit breaker employing an arc chute according to claim 1, characterized in that: the novel air-conditioner comprises a housin, the casing in be provided with arc extinguishing area and air outlet, arc extinguishing area to the protruding extension region that forms and air outlet UNICOM of air outlet, both sides the curb plate be the V-arrangement to form the V-arrangement explosion chamber that is located the arc extinguishing area with the combination of arc extinguishing bars piece, the V-arrangement pointed end of this V-arrangement explosion chamber is relative with the air outlet and extends to the extension region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220132528.4U CN216902779U (en) | 2022-01-18 | 2022-01-18 | Arc extinguish chamber and miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220132528.4U CN216902779U (en) | 2022-01-18 | 2022-01-18 | Arc extinguish chamber and miniature circuit breaker |
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| Publication Number | Publication Date |
|---|---|
| CN216902779U true CN216902779U (en) | 2022-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220132528.4U Active CN216902779U (en) | 2022-01-18 | 2022-01-18 | Arc extinguish chamber and miniature circuit breaker |
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| CN (1) | CN216902779U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116387065A (en) * | 2023-04-06 | 2023-07-04 | 河北宝凯电气股份有限公司 | Arc extinguishing system and circuit breaker |
-
2022
- 2022-01-18 CN CN202220132528.4U patent/CN216902779U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116387065A (en) * | 2023-04-06 | 2023-07-04 | 河北宝凯电气股份有限公司 | Arc extinguishing system and circuit breaker |
| CN116387065B (en) * | 2023-04-06 | 2024-01-30 | 河北宝凯电气股份有限公司 | Arc extinguishing system and circuit breaker |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 325000 Wenzhou Bridge Industrial Park, Beibeixiang Town, Yueqing City, Wenzhou City, Zhejiang Province Patentee after: Zhejiang Benyi New Energy Co.,Ltd. Address before: 325600 Daqiao Industrial Zone, beibaixiang Town, Yueqing City, Wenzhou City, Zhejiang Province Patentee before: ZHEJIANG BENYI ELECTRICAL Co.,Ltd. |
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| CP03 | Change of name, title or address |