CN207966905U - A kind of miniature circuit breaker arc-chutes - Google Patents
A kind of miniature circuit breaker arc-chutes Download PDFInfo
- Publication number
- CN207966905U CN207966905U CN201721883763.0U CN201721883763U CN207966905U CN 207966905 U CN207966905 U CN 207966905U CN 201721883763 U CN201721883763 U CN 201721883763U CN 207966905 U CN207966905 U CN 207966905U
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- CN
- China
- Prior art keywords
- arc
- grid pieces
- extinguishing grid
- arc extinguishing
- fixed
- 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.)
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Abstract
The utility model discloses a kind of miniature circuit breaker arc-chutes, including two fixed plates and several be set to the arc extinguishing grid pieces between two fixed plates, several groups fixed mechanism is evenly distributed in the fixed plate, the fixed mechanism includes several mounting holes, the arc extinguishing grid pieces include inlet end, outlet side and two sides, the both sides of outlet side on the arc extinguishing grid pieces are respectively the arc-shaped structure expanded outwardly, an outlet passageway to contract is formed between the outlet side of two neighboring arc extinguishing grid pieces, side on two sides on the arc extinguishing grid pieces by near outgassing end is respectively equipped with a fixed right angle, corresponding to the fixed block being equipped at the position of mounting hole and mounting hole matches on the fixed right angle, one end of the fixed block is through corresponding mounting hole.The utility model is reasonable in design, quick and easy for installation, can effectively avoid electric arc from dissociating metallic the phenomenon that being easily returned to arc-chutes in steam, while can effectively improve electric arc cooling rate.
Description
Technical field
The utility model is related to breaker technical fields, and in particular to a kind of miniature circuit breaker arc-chutes.
Background technology
Electric arc is a kind of gas discharge phenomenon, is that electric current passes through moment spark caused by certain medium (such as air).
In daily life, when by electric current be more than breaker setting limiting value after, breaker will automatic interruptive current, break
After contact on the device of road disconnects, electric arc just can be lit, since electric arc can not only damage device line, or even can also shadow
Ring personal safety.Therefore, arc extinguishing is one of important application for breaker.Currently, arc-suppressing method commonly used in the prior art
Including mechanical arc extinguishing method, magnetic quenching method, narrow slit arc extinguishing method and grid arc extinguishing method.
Wherein grid arc extinguishing method is mainly used in ac electric apparatus, and when the contact of breaker separates, the electric arc of generation exists
Be pushed under the action of electric power in one group of metal grid and be divided into several sections, metal grid insulated from each other per it is a piece of all
As soon as being equivalent to an electrode, therefore there are many anode and cathode voltage crests.For alternating current arc, at nearly cathode, just in electric arc zero passage
It will appear 150V~250V method dielectric strength, make electric arc that can not continue to and extinguish.
In the prior art, due to containing metallic in arcing gas, this metallic is easy to make around breaker
There is short circuit in conductive component or electric device.Therefore, in order to make arc extinguishing gases cooling and deionization, the measure of generally use
It is that the free device that disappears is arranged to arc-chutes outlet port.
Chinese patent literature CN202258893U discloses a kind of arc-chutes, including arc insulating cover, arc striking piece, two arcs
Wall, grid, arc extinguishing board and remove free net, wherein be sequentially installed with from top to bottom between arc insulating cover at the top of grid arc extinguishing board and
Free net, arc extinguishing board is gone to be contacted with grid top, the effect of arc extinguishing board is to maintain the gap between grid, prevents short between grid
Road, while intensity can be increased and preferably cool down electric arc.Arc extinguishing board is along transversal line trepanning, in order to not influence gas permeability, hole it is big
Small and arrangement is adapted with grid interval, and free net is gone then to be placed on arc extinguishing board.It is ferromagnetic material due to removing free net, in electricity
Arc can generate very strong induced field when occurring, and electric arc is pulled out grid, while the power that generates of induced field can will likely be from
The electric arc that arc spraying mouth sprays is withdrawn into arc-chutes, to prevent electric arc from flying out by the arc spraying mouth on arc-extinguish chamber.But this goes out
Arc chamber overall structure is relatively complicated, does not meet miniature circuit breaker use, and since the air hole on arc extinguishing board is straight-through
Formula designs, when the electric arc for going the power for swimming off-grid induced field generation that will likely be sprayed from arc spraying mouth is withdrawn into arc-chutes,
Arc-chutes will be backed within containing metallic in the free steam of electric arc, to c correspondingly increase metallic vapour in arc-chutes
Density；In addition, the size in hole on arc extinguishing board and arrangement are adapted with grid interval, to which more conducively electric arc dissociates in steam
Metallic return to arc-chutes, to reduce the dielectric strength of arc-chutes.
Utility model content
The utility model to solve the above-mentioned problems, provides reasonable in design, quick and easy for installation, the Neng Gouyou of one kind
The phenomenon that effect avoids the metallic in the free steam of electric arc from being easily returned to arc-chutes, while electric arc cooling speed can be effectively improved
The miniature circuit breaker arc-chutes of rate.
The utility model adopts the following technical solution：
A kind of miniature circuit breaker arc-chutes, including the fixed plate of two parallel and symmetricals setting and several are parallel
The arc extinguishing grid pieces being set between two fixed plates are evenly distributed in the fixed plate several along the length direction of fixed plate
Group fixed mechanism, the fixed mechanism includes several equally distributed mounting holes of width direction along fixed plate, described to go out
Arc grid includes inlet end, outlet side and two sides being oppositely arranged, the both sides difference of the outlet side on the arc extinguishing grid pieces
Formed for the arc-shaped structure expanded outwardly, between the outlet side of two neighboring arc extinguishing grid pieces one it is logical to the outlet of contract
Road is respectively equipped with a fixation right angle being inwardly recessed on two sides on the arc extinguishing grid pieces by the side of near outgassing end,
Corresponding to the fixed block being equipped at the position of mounting hole and mounting hole matches on the fixed right angle, one end of the fixed block is passed through
It is through at corresponding mounting hole.
As a kind of optimal technical scheme of the utility model, it is also evenly distributed with several in the fixed plate and first goes out
Stomata is equipped with connecting plate in the fixed plate away from the side of arc extinguishing grid pieces, and cavity is equipped between the connecting plate and fixed plate,
First venthole is connected with cavity, and one end of close arc extinguishing grid pieces outlet side is evenly distributed with several on the connecting plate
A the second venthole being connected with cavity.
As a kind of optimal technical scheme of the utility model, on first venthole close to cavity one end be along
Structure of the axle center to contract.
As a kind of optimal technical scheme of the utility model, the inlet end of the arc extinguishing grid pieces is equipped with striking notch,
The striking notch includes the first segment and second segment being mutually linked, and the first segment is outside along the direction far from second segment
The structure of circular arc expansion, the second segment are "U" shaped structure, the center line of the first segment and the center line of second segment with
The center line of arc extinguishing grid pieces overlaps.
As a kind of optimal technical scheme of the utility model, the fixed plate is made of outlet plastics.
As a kind of optimal technical scheme of the utility model, the quantity of the mounting hole on fixed mechanism described in every group is 3
It is a.
The utility model has the beneficial effects that：
1, the utility model structure is reasonable in design, passes through fixed block between the arc extinguishing grid pieces being provided with and fixed plate
It is in clamping connection in together, can greatly enhance the shock resistance effect of arc extinguishing grid pieces compared with the prior art, uses with mounting hole
When can also enhance the job stability of breaker；Arc extinguishing grid pieces are arranged using centrosymmetric mode simultaneously so that arc-chute
The assembly of piece is more convenient；
2, the arc-shaped structure that the both sides of the outlet side on arc extinguishing grid pieces are set to expand outwardly by the utility model, from
And to form an outlet passageway to contract between the outlet side of two neighboring arc extinguishing grid pieces, such design can either
Save bottom plate and the free device that disappears so that arc-chutes overall structure is by a relatively simple, easy to assembly, and reduces production cost,
Electric arc can also be prevented to be put back into arc-chutes again after the outlet passageway discharge on arc-chutes, to be effectively reduced arc extinguishing
The density of indoor metal steam improves dielectric strength；
3, the striking notch of the utility model setting includes the first segment and second segment being mutually linked, and first segment is set as
The horn-like structure expanded outwardly, second segment are set as "U" shaped structure, and wherein first segment can enhance arc-chutes to electric arc
Suction reduces resistance when electric arc enters arc-chutes, so as to save the suction arcs being arranged on arc-chutes in the prior art, drop
The production technology and production cost of low arc-chutes；And second segment can then play the role of electric arc elongation, to improve arc-chutes
Arc extinguishing efficiency；The striking notch of setting occupies while guaranteeing to play preferable striking and stretching electric arc effect simultaneously
The area of arc extinguishing grid pieces is smaller, to inversely increase the real area of arc extinguishing grid pieces, improves the heat dissipation effect of arc-chutes；
4, the first venthole, cavity and the second venthole of the utility model setting have made more than arc-chutes an exhaust logical
Road, and cavity can extend the discharge path of gas, to improve the cooling effect of electric arc；
5, the fixed plate of the utility model is made of outlet plastics, and outlet plastics can bear the high temperature sintering of electric arc,
And outlet plastics can generate gas after heated, achieve the effect that arc blow-out, to push arc motion to cool down.
Description of the drawings
Fig. 1 is a kind of dimensional structure diagram of miniature circuit breaker arc-chutes of the utility model；
Fig. 2 is a kind of schematic cross-section of miniature circuit breaker arc-chutes of the utility model；
The vertical view of Fig. 3 and the utility model arc extinguishing grid pieces；
Symbol description in figure：
Fixed plate 1, arc extinguishing grid pieces 2, mounting hole 3, outlet passageway 4, fixed right angle 5, fixed block 6, the first venthole 7, even
Fishplate bar 8, cavity 9, the second venthole 10, striking notch 11, first segment 12, second segment 13.
Specific implementation mode
Presently in connection with attached drawing, the present invention will be further described in detail.
As shown in Figure 1, a kind of miniature circuit breaker arc-chutes, including the fixed plate 1 of two parallel and symmetricals setting and
Several parallel arc extinguishing grid pieces 2 being set between two fixed plates 1, along the length side of fixed plate 1 in the fixed plate 1
To several groups fixed mechanism is evenly distributed with, the fixed mechanism includes that three width directions along fixed plate 1 are uniformly distributed
Mounting hole 3, in actual application, the quantity of mounting hole 3 can be selected according to actual needs, the arc extinguishing grid pieces 2
Including inlet end, outlet side and two sides being oppositely arranged, the both sides of the outlet side on the arc extinguishing grid pieces 2 are respectively outside
The arc-shaped structure of expansion, so that forming an outlet to contract between the outlet side of two neighboring arc extinguishing grid pieces 2
It is straight to be respectively equipped with the fixation that one is inwardly recessed on two sides of the arc extinguishing grid pieces 2 and by the side of near outgassing end for channel 4
Angle 5 corresponds on the fixed right angle 5 at the position of mounting hole 3 and is equipped with and fixed block 6 that mounting hole 3 matches, the fixed block
6 one end is through corresponding mounting hole 3, so that arc extinguishing grid pieces 2 are in clamping connection between two fixed plates 1；
It is also evenly distributed with several first ventholes 7 in the fixed plate 1, deviates from arc extinguishing grid pieces 2 in the fixed plate 1
Side be equipped with connecting plate 8, between the connecting plate 8 and fixed plate 1 be equipped with cavity 9,9 phase of first venthole 7 and cavity
Connection, be evenly distributed with that several are connected with cavity 9 close to one end of 2 outlet side of arc extinguishing grid pieces on the connecting plate 8 the
Two ventholes 10；Close to one end of cavity 9 it is along axle center to the structure of contract on first venthole 7, so as to
It prevents electric arc to be put back into arc-chutes again after the first venthole 7, is effectively reduced the density of metallic vapour in arc-chutes, carries
High dielectric strength；
The inlet end of the arc extinguishing grid pieces 2 is equipped with striking notch 11, and the striking notch 11 includes the be mutually linked
One section 12 and second segment 13, the first segment 12 is the structure expanded to external arc along the direction far from second segment 12, described
Second segment 13 is "U" shaped structure, the center line of the first segment 12 and the center line of second segment 13 in arc extinguishing grid pieces 2
Heart line overlaps so that line symmetrical structure centered on arc extinguishing grid pieces 1, so that the assembly of entire arc-chutes is more convenient fast
It is prompt；
The fixed plate 1 is made of outlet plastics, the fixed plates of miniature circuit breaker arc-chutes in the prior art be by
Red steel paper board material is made, and in breaking course, since high arc temperature acts on, red port cardboard carbonization cannot be such that arc extinguishing grid pieces protect
Original position is held, to can not reach the effect of effective arc cutting, influences disjunction effect；In addition red steel paper board material does not have
Have generate gas to achieve the effect that arc blow-out；And the high temperature that the outlet plastics that the utility model uses can bear electric arc burns
It burns, and outlet plastics can generate gas after heated, achieve the effect that arc blow-out, to push arc motion to cool down, improves
The cooling rate of electric arc.
Finally it should be noted that：These embodiments are merely to illustrate model of the utility model without limiting the utility model
It encloses.In addition, to those of ordinary skill in the art, can also make on the basis of the above description other various forms of
Variation changes.There is no necessity and possibility to exhaust all the enbodiments.And it thus amplifies out obvious
Among changing or changing still in the scope of protection of the utility model.
Claims (6)
1. a kind of miniature circuit breaker arc-chutes, including the fixed plate (1) of two parallel and symmetricals setting and several are parallel
The arc extinguishing grid pieces (2) being set between two fixed plates (1), it is characterised in that：Along fixed plate on the fixed plate (1)
(1) length direction is evenly distributed with several groups fixed mechanism, and the fixed mechanism includes several width along fixed plate (1)
The equally distributed mounting hole in direction (3) is spent, the arc extinguishing grid pieces (2) include inlet end, outlet side and two sides being oppositely arranged
It holds, the both sides of the outlet side on the arc extinguishing grid pieces (2) are respectively the arc-shaped structure expanded outwardly, two neighboring arc extinguishing grid pieces
(2) outlet passageway (4) to contract is formed between outlet side, is leaned on two sides on the arc extinguishing grid pieces (2)
The side of near outgassing end is respectively equipped with a fixation right angle (5) being inwardly recessed, and corresponds to mounting hole on the fixed right angle (5)
(3) it is equipped at position and fixed block (6) that mounting hole (3) matches, one end of the fixed block (6) is through corresponding fixation
Hole (3).
2. a kind of miniature circuit breaker arc-chutes according to claim 1, it is characterised in that：On the fixed plate (1) also
Several the first ventholes (7) are evenly distributed with, the side that arc extinguishing grid pieces (2) are deviated from the fixed plate (1) is equipped with connecting plate
(8), cavity (9) is equipped between the connecting plate (8) and fixed plate (1), first venthole (7) is connected with cavity (9),
Be evenly distributed with that several are connected with cavity (9) close to one end of arc extinguishing grid pieces (2) outlet side on the connecting plate (8) the
Two ventholes (10).
3. a kind of miniature circuit breaker arc-chutes according to claim 2, it is characterised in that：First venthole (7)
It is upper close to one end of cavity (9) be along axle center to the structure of contract.
4. a kind of miniature circuit breaker arc-chutes according to claim 1, it is characterised in that：The arc extinguishing grid pieces (2)
Inlet end is equipped with striking notch (11), and the striking notch (11) includes the first segment (12) and second segment being mutually linked
(13), the first segment (12) is the structure expanded to external arc along the direction far from second segment (13), the second segment
(13) be "U" shaped structure, the center line of the first segment (12) and the center line of second segment (13) with arc extinguishing grid pieces (2)
Center line overlaps.
5. a kind of miniature circuit breaker arc-chutes according to claim 1, it is characterised in that：The fixed plate (1) uses
Outlet plastics are made.
6. a kind of miniature circuit breaker arc-chutes according to claim 1, it is characterised in that：On fixed mechanism described in every group
Mounting hole (3) quantity be 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721883763.0U CN207966905U (en) | 2017-12-28 | 2017-12-28 | A kind of miniature circuit breaker arc-chutes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721883763.0U CN207966905U (en) | 2017-12-28 | 2017-12-28 | A kind of miniature circuit breaker arc-chutes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207966905U true CN207966905U (en) | 2018-10-12 |
Family
ID=63730715
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721883763.0U Withdrawn - After Issue CN207966905U (en) | 2017-12-28 | 2017-12-28 | A kind of miniature circuit breaker arc-chutes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207966905U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107946152A (en) * | 2017-12-28 | 2018-04-20 | 加西亚电子电器股份有限公司 | A kind of miniature circuit breaker arc-chutes |
-
2017
- 2017-12-28 CN CN201721883763.0U patent/CN207966905U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107946152A (en) * | 2017-12-28 | 2018-04-20 | 加西亚电子电器股份有限公司 | A kind of miniature circuit breaker arc-chutes |
| CN107946152B (en) * | 2017-12-28 | 2023-10-03 | 加西亚电子电器股份有限公司 | Arc extinguishing chamber for miniature circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20181012 Effective date of abandoning: 20231003 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20181012 Effective date of abandoning: 20231003 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |