CN109755079A - The arc-control device of breaker - Google Patents
The arc-control device of breaker Download PDFInfo
- Publication number
- CN109755079A CN109755079A CN201910036202.4A CN201910036202A CN109755079A CN 109755079 A CN109755079 A CN 109755079A CN 201910036202 A CN201910036202 A CN 201910036202A CN 109755079 A CN109755079 A CN 109755079A
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- China
- Prior art keywords
- arc
- extinguishing grid
- static contact
- grid pieces
- magnetic yoke
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The present invention relates to a kind of arc-control devices of breaker, including circuit breaker housing and the static contact being installed in circuit breaker housing, movable contact spring, arc extinguishing grid pieces and arc striking piece, the circuit breaker housing is provided with arc-chutes close to static contact and moving contact disjunction position, the arc extinguishing grid pieces and arc striking piece are located in arc-chutes, described arc striking piece one end offsets with static contact or offsets when movable contact spring is disconnected with static contact with movable contact spring, the other end extends to arc extinguishing grid pieces, it is characterized by also including electric arc impellers, the electric arc impeller is formed towards the magnetic field of arc extinguishing grid pieces, the magnetic field pushes electric arc to the direction of arc extinguishing grid pieces when static contact and movable contact spring disconnect and generate electric arc.Using the above scheme, the present invention provides a kind of by increasing striking efficiency to enhance the arc-control device of the breaker of breaking capacity, and breaker is made to can satisfy the demand of high current loads.
Description
Technical field
The present invention relates to field of circuit breakers, and in particular to a kind of arc-control device of breaker.
Background technique
Breaker is the electric current referred to close, carry and cut-off under normal loop condition and can close, when defined
Interior carrying and the switching device for cut-offfing the electric current under abnormal loop condition.And during breaker actuation, moving contact with it is quiet
The connection of contact and the process of breaking current are usually associated with the generation and extinguishing of electric arc, and electric arc is a kind of gas discharge phenomenon,
With high temperature, there is certain harm to circuit breaker internal, therefore need to be arranged arc-control device to solve electric arc in electric appliance
In influence.
Traditional arc-control device includes circuit breaker housing and the static contact being installed in circuit breaker housing, movable contact spring, arc extinguishing
Grid and arc striking piece, circuit breaker housing are provided with arc-chutes, arc extinguishing grid pieces and striking close to static contact and moving contact disjunction position
Piece is located in arc-chutes, and arc striking piece one end is electrically connected with static contact or movable contact spring, and the other end extends to arc extinguishing grid pieces, by moving contact
It is guided by arc striking piece to arc extinguishing grid pieces with the electric arc formed when static contact disjunction, to be eliminated.
However, its breaking capacity of the breaker of this kind of structure is still limited, as the current loading of breaker is increasing,
Not rapidly by disjunction when generated electric arc carry out arc extinguishing, will because the high temperature entrained by electric arc to circuit breaker internal caused by damage
It is bad.
Summary of the invention
It is a kind of by increasing striking efficiency to increase in view of the deficiencies of the prior art, the present invention intends to provide
The arc-control device of the breaker of strong breaking capacity, makes breaker can satisfy the demand of high current loads.
To achieve the above object, the present invention provides the following technical scheme that including circuit breaker housing and being installed on breaker
The intracorporal static contact of shell, movable contact spring, arc extinguishing grid pieces and arc striking piece, the circuit breaker housing is close to static contact and moving contact disjunction
Position is provided with arc-chutes, and the arc extinguishing grid pieces and arc striking piece are located in arc-chutes, described arc striking piece one end and static contact
It offsets or offsets when movable contact spring is disconnected with static contact with movable contact spring, the other end extends to arc extinguishing grid pieces, it is characterised in that: also wraps
Electric arc impeller is included, the electric arc impeller is formed towards the magnetic field of arc extinguishing grid pieces, and the magnetic field is disconnected in static contact and movable contact spring
Electric arc is pushed along arc striking piece to the direction of arc extinguishing grid pieces when opening and generating electric arc.
Generation is added by static contact and dynamic touching according to magnetic field to the action principle of electric arc by using above-mentioned technical proposal
Piece disconnect caused by the electric arc impeller in magnetic field that is pushed to arc extinguishing grid pieces of electric arc, shortening electric arc stopped at arc striking piece when
It is long, striking efficiency is improved, avoids electric arc slow because being moved through, entrained high temperature damages circuit breaker internal, makes breaker
It can satisfy the demand of high current loads, which can be formed also as energized conductor as entrained by magnet itself.
The present invention is further arranged to: the electric arc impeller is the magnetic yoke of shape of being in U-shape, the magnetic yoke by with it is quiet
Contact or movable contact spring electrical connection have an electric energy, and the U-shaped opening of the magnetic yoke is towards arc extinguishing grid pieces, the U-shaped two of the magnetic yoke
It is formed between end towards arc extinguishing grid pieces and electromagnetic field from electric arc to the direction of arc extinguishing grid pieces that push.
By using above-mentioned technical proposal, select the magnetic yoke of U-shape as electric arc impeller, magnetic yoke by with static contact or
Movable contact spring electrical connection has electric energy, can generate electromagnetic field at U-shaped both ends, since the U-shaped opening of magnetic yoke is towards arc extinguishing grid pieces,
Therefore the electromagnetic field generated will form the repulsive force for pushing electric arc to the direction of arc extinguishing grid pieces, accelerate movable contact spring and static contact disjunction
Generated electric arc is mobile to arc extinguishing grid pieces, increases striking efficiency, in time eliminates electric arc, to increase point of breaker
Cutting capacity, and the electric energy rationally having had in circuit is for generating electromagnetic field, it is compact-sized.
The present invention is further arranged to: the U-shaped bottom inside of the magnetic yoke is provided with for being electrically connected with other component
Contact.
By using above-mentioned technical proposal, contact is added, preferably magnetic yoke is electrically connected by the way of point contact, thus
Reinforce the intensity of the electromagnetic field of the U-shaped both ends formation of magnetic yoke magnetic yoke.
The present invention is further arranged to: the arc striking piece offsets with static contact, the U-shaped bottom inside of the magnetic yoke with
Static contact is mutually fixed and constitutes electrical connection, and the static contact is located between the two sides of the U-shaped opening of magnetic yoke.
Magnetic yoke is installed on suitable for the breaker that arc striking piece is electrically connected with static contact by using above-mentioned technical proposal
Static contact, to meet the requirement that the electromagnetic field formed is pushed to the direction of arc extinguishing grid pieces.
The present invention is further arranged to: the arc striking piece offsets when movable contact spring is disconnected with static contact with movable contact spring, institute
The U-shaped bottom inside for the magnetic yoke stated mutually is fixed and is constituted with arc striking piece and is electrically connected, and the arc striking piece is located at the U-shaped opening of magnetic yoke
Two sides between.
Magnetic yoke is installed on suitable for the breaker that arc striking piece is electrically connected with movable contact spring by using above-mentioned technical proposal
Arc striking piece, to meet the requirement that the electromagnetic field formed is pushed to the direction of arc extinguishing grid pieces.
Detailed description of the invention
Fig. 1 is the perspective view of the specific embodiment of the invention one；
Fig. 2 is the combination stereogram of static contact and magnetic yoke in the specific embodiment of the invention one；
Fig. 3 is the perspective view of magnetic yoke in the specific embodiment of the invention one；
Fig. 4 is the testing result that the specified limit short-circuit capacity of the specific embodiment of the invention one is tested；
Fig. 5 is the perspective view of the specific embodiment of the invention two.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described reality
Applying example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without making creative work belongs to the model that the present invention protects
It encloses.
In the description of the present invention, it should be noted that term " center ", "lower", "left", "right", " is erected at "upper"
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, only
It is that for the convenience of describing the present invention and simplifying the description, rather than the device or element of indication or suggestion meaning must have specifically
Orientation is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " the
Two ", " third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
As shown in Fig. 1-Fig. 3, the invention discloses a kind of arc-control devices of breaker, including circuit breaker housing 1 and installation
In static contact 2, movable contact spring 3, arc extinguishing grid pieces 4 and arc striking piece 5 in circuit breaker housing 1, circuit breaker housing 1 close to static contact 2 with
Moving contact disjunction position is provided with arc-chutes 6, and arc extinguishing grid pieces 4 and arc striking piece 5 are located in arc-chutes 6,5 one end of arc striking piece and stationary contact
Piece 2 offsets or offsets when movable contact spring 3 is disconnected with static contact 2 with movable contact spring 3, and the other end extends to arc extinguishing grid pieces 4, further includes electricity
Arc impeller, electric arc impeller are formed towards the magnetic field of arc extinguishing grid pieces 4, which disconnects and generate in static contact 2 and movable contact spring 3
Electric arc is pushed along arc striking piece to the direction of arc extinguishing grid pieces 4 when electric arc, generation is added and is produced static contact 2 and the disconnection of movable contact spring 3
The electric arc impeller in the magnetic field that raw electric arc is pushed to arc extinguishing grid pieces 4 shortens the duration that electric arc stops at arc striking piece 5, improves
Striking efficiency avoids electric arc slow because being moved through, and entrained high temperature damages circuit breaker internal, can satisfy breaker
The demand of high current loads, the magnetic field can be formed also as energized conductor as entrained by magnet itself.
Electric arc impeller is the magnetic yoke 7 of shape of being in U-shape, magnetic yoke 7 by being electrically connected with static contact 2 or movable contact spring 3 with electric energy,
The U-shaped opening 73 of magnetic yoke 7 is formed towards arc extinguishing grid pieces 4 and by electric arc towards arc extinguishing grid pieces 4, between the U-shaped both ends of magnetic yoke 7 to going out
The electromagnetic field that the direction of arc grid 4 pushes selects the magnetic yoke 7 of U-shape as electric arc impeller, magnetic yoke 7 by with static contact 2 or
The electrical connection of movable contact spring 3 has electric energy, electromagnetic field can be being generated at U-shaped both ends, since the U-shaped opening 73 of magnetic yoke 7 is towards arc extinguishing
Grid 4, therefore the electromagnetic field generated will form the repulsive force for pushing electric arc to the direction of arc extinguishing grid pieces 4, acceleration movable contact spring 3 and quiet
Electric arc caused by 2 disjunction of contact is mobile to arc extinguishing grid pieces 4, increases striking efficiency, in time eliminates electric arc, to increase
The breaking capacity of breaker, and the electric energy rationally having had in circuit is for generating electromagnetic field, it is compact-sized.
The U-shaped bottom inside 72 of magnetic yoke 7 is provided with the contact 71 for being electrically connected with other component, adds contact 71, excellent
Magnetic yoke 7 is selected to be electrically connected by the way of point contact, thus the intensity for the electromagnetic field that the U-shaped both ends for reinforcing magnetic yoke 7 are formed.
Arc striking piece 5 offsets with static contact 2, and the U-shaped bottom inside 72 of magnetic yoke 7, which is fixed and constituted with 2 phase of static contact, to be electrically connected,
Static contact 2 is located between the two sides 74 of the U-shaped opening of magnetic yoke 7, will suitable for the breaker that arc striking piece 5 is electrically connected with static contact 2
Magnetic yoke 7 is installed on static contact 2, to meet the requirement that the electromagnetic field formed is pushed to the direction of arc extinguishing grid pieces 4, magnetic yoke 7 and stationary contact
Welding can be used between piece 2 to be fixed.
In addition, the testing result that the specified limit short-circuit capacity of the specific embodiment of the invention is tested as shown in Figure 4, point
Cutting capacity is significantly better than the breaker of traditional structure.
As shown in figure 5, disclosing another embodiment of the invention, arc striking piece 5 is disconnected in movable contact spring 3 and static contact 2
When offset with movable contact spring 3, the U-shaped bottom inside 72 of magnetic yoke 7, which is fixed and constituted with 5 phase of arc striking piece, to be electrically connected, and arc striking piece 5 is located at magnetic
Between the two sides 74 of the U-shaped opening of yoke 7, suitable for the breaker that arc striking piece 5 is electrically connected with movable contact spring 3, magnetic yoke 7 is installed on and is drawn
Arcs 5 can be used between magnetic yoke 7 and arc striking piece 5 with meeting the requirement that the electromagnetic field formed is pushed to the direction of arc extinguishing grid pieces 4
Welding is fixed.
Claims (5)
1. a kind of arc-control device of breaker, including circuit breaker housing and the static contact being installed in circuit breaker housing, movable contact spring,
Arc extinguishing grid pieces and arc striking piece, the circuit breaker housing is provided with arc-chutes close to static contact and moving contact disjunction position, described
Arc extinguishing grid pieces and arc striking piece be located in arc-chutes, described arc striking piece one end and static contact offset or in movable contact spring and static contact
It offsets when disconnection with movable contact spring, the other end extends to arc extinguishing grid pieces, it is characterised in that: further include electric arc impeller, the electricity
Arc impeller is formed towards the magnetic field of arc extinguishing grid pieces, and the magnetic field is when static contact and movable contact spring disconnect and generate electric arc by electric arc edge
Arc striking piece is pushed to the direction of arc extinguishing grid pieces.
2. the arc-control device of breaker according to claim 1, it is characterised in that: the electric arc impeller is to be in U-shape
The magnetic yoke of shape, the magnetic yoke with static contact or movable contact spring by being electrically connected with electric energy, the U-shaped opening direction of the magnetic yoke
Arc extinguishing grid pieces form between the U-shaped both ends of the magnetic yoke towards arc extinguishing grid pieces and push electric arc to the direction of arc extinguishing grid pieces
Electromagnetic field.
3. the arc-control device of breaker according to claim 2, it is characterised in that: the U-shaped bottom inside of the magnetic yoke
It is provided with the contact for being electrically connected with other component.
4. the arc-control device of breaker according to claim 2 or 3, it is characterised in that: the arc striking piece and static contact
It offsets, the U-shaped bottom inside of the magnetic yoke, which is mutually fixed and constituted with static contact, to be electrically connected, and the static contact is located at magnetic yoke
Between the two sides of U-shaped opening.
5. the arc-control device of breaker according to claim 2 or 3, it is characterised in that: the arc striking piece is in movable contact spring
It offseting when being disconnected with static contact with movable contact spring, the U-shaped bottom inside of the magnetic yoke, which is mutually fixed and constituted with arc striking piece, to be electrically connected,
The arc striking piece is located between the two sides of the U-shaped opening of magnetic yoke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910036202.4A CN109755079A (en) | 2019-01-15 | 2019-01-15 | The arc-control device of breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910036202.4A CN109755079A (en) | 2019-01-15 | 2019-01-15 | The arc-control device of breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109755079A true CN109755079A (en) | 2019-05-14 |
Family
ID=66405801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910036202.4A Pending CN109755079A (en) | 2019-01-15 | 2019-01-15 | The arc-control device of breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109755079A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114023605A (en) * | 2021-11-04 | 2022-02-08 | 浙江天正电气股份有限公司 | N-pole structure and compact electric energy meter external circuit breaker |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201918340U (en) * | 2011-01-14 | 2011-08-03 | 上海人民企业集团温州电器有限公司 | Small-sized circuit breaker |
| CN105742093A (en) * | 2016-04-29 | 2016-07-06 | 浙江人民电器有限公司 | Magnetic blow-out arc striking structure and circuit breaker thereof |
| CN209544273U (en) * | 2019-01-15 | 2019-10-25 | 温州市新蓝天电器有限公司 | The arc-control device of breaker |
-
2019
- 2019-01-15 CN CN201910036202.4A patent/CN109755079A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201918340U (en) * | 2011-01-14 | 2011-08-03 | 上海人民企业集团温州电器有限公司 | Small-sized circuit breaker |
| CN105742093A (en) * | 2016-04-29 | 2016-07-06 | 浙江人民电器有限公司 | Magnetic blow-out arc striking structure and circuit breaker thereof |
| CN209544273U (en) * | 2019-01-15 | 2019-10-25 | 温州市新蓝天电器有限公司 | The arc-control device of breaker |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114023605A (en) * | 2021-11-04 | 2022-02-08 | 浙江天正电气股份有限公司 | N-pole structure and compact electric energy meter external circuit breaker |
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