CN108389742A - Reinforce the method that arc gap arc blow-out magnetic flux improves electric appliance arc extinguishing ability - Google Patents
Reinforce the method that arc gap arc blow-out magnetic flux improves electric appliance arc extinguishing ability Download PDFInfo
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- CN108389742A CN108389742A CN201810393196.3A CN201810393196A CN108389742A CN 108389742 A CN108389742 A CN 108389742A CN 201810393196 A CN201810393196 A CN 201810393196A CN 108389742 A CN108389742 A CN 108389742A
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- Prior art keywords
- arc
- bridge
- magnetic conductive
- contact
- magnetic flux
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
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- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The present invention provides a kind of method that reinforcement arc gap arc blow-out magnetic flux improves electric appliance arc extinguishing ability, including dynamic tactile bridge and it is set to the dynamic moving contact for touching bridge lower surface, it is provided with stationary contact bridge below the dynamic tactile bridge, the static contact being correspondingly arranged with moving contact is provided on the stationary contact bridge, it is characterised in that：Magnetic conductive board is set on each stationary contact bridge, in the moving contact and static contact that are correspondingly arranged, it is U-shaped and have magnetic conductive part of the opening towards arc gap that the periphery of moving contact or static contact is cased with section.Compared with prior art, the present invention U-shaped magnetic conductive part reinforces the outside arc blow-out magnetic flux of arc gap, magnetic conductive board reduces the inside arc blow-out magnetic flux of arc gap, to increase total outside arc blow-out magnetic flux, outside arc blow-out power is improved, has and improves electric appliance arc extinguishing ability, it is simple in structure, reliably, it is at low cost the features such as.
Description
Technical field
The present invention relates to appliance fields, and in particular to a kind of side for reinforcing arc gap arc blow-out magnetic flux and improving electric appliance arc extinguishing ability
Method.
Background technology
Electric arc is the phenomenon that electric operation process necessarily leads to, and electric arc causes the serious scaling loss of electrical contact, not only makes electricity
Service life and functional reliability are greatly reduced, and the possible melting welding of contact, major accident are caused, to influence the normal of whole system
Operation.In order to reinforce electrical contact arc extinguishing ability, electrical apparatus industry has carried out numerous studies, for example, using grid arc extinguishing, longitudinal joint goes out
Arc, series connection magnetic quenching etc..Currently, above-mentioned arc extinguishing measure and U-shaped stationary contact bridge is all respectively adopted in all contactor products, adopt
It is exactly to reinforce the ability of the outside arc blow-out of contact electric arc with consumption copper and the more complicated U-shaped stationary contact bridge of structure.Sound touches bridge portion
It is opposite to divide electric current arc blow-out direction of arc gap magnetic flux between contact, how to use simple structure type, continues to reinforce arc
The outside arc blow-out magnetic flux of gap reduces the inside arc blow-out magnetic flux of arc gap, and it is a problem to improve contact arc-extinguishing ability.Relay product is substantially
Using "-" type stationary contact bridge, it is antipodal, serious shadow that sound, which touches bridge electric current arc blow-out direction of arc gap electric arc between contact,
How the electric arc breaking capacity for ringing relay reinforces the outside arc blow-out magnetic flux of arc gap, reduces the inside arc blow-out magnetic flux of arc gap, improves contact
Arc extinguishing ability is even more a problem.
Invention content
Patent of the present invention the technical problem to be solved is that the arc extinguishing ability for improving existing contactor or relay product,
To improve the electric life and reliability of electric equipment products.
Specific embodiments of the present invention are：A method of reinforcing arc gap arc blow-out magnetic flux and improves electric appliance arc extinguishing ability, packet
The dynamic tactile bridge being arranged in electric appliance and the moving contact for being set to dynamic tactile bridge lower surface are included, stationary contact is provided with below the dynamic tactile bridge
Bridge is provided with the static contact being correspondingly arranged with moving contact on the stationary contact bridge, it is characterised in that：It is arranged on each stationary contact bridge
Magnetic conductive board, in the moving contact and static contact that are correspondingly arranged, the periphery of moving contact or static contact is cased with that section is U-shaped and opening direction
The magnetic conductive part of arc gap.
Further, when the stationary contact bridge is U-shaped, the magnetic conductive board is fixed on the upper surface of stationary contact bridge inner cavity.
Further, when the stationary contact bridge is "-" type, the magnetic conductive board is fixed on static contact side.
Further, when the stationary contact bridge is U-shaped, the U-shaped magnetic conductive part is placed on static contact, the direction of the magnetic conductive part
The end face of moving contact is equal to or higher than static contact end face.
Further, when the stationary contact bridge is "-" type, the U-shaped magnetic conductive part is placed on moving contact, the magnetic conductive part
Towards the end face of static contact close to static contact end face.
Further, the U-shaped magnetic conductive part end has what is be recessed inwardly to inside contract portion.
Further, the U-shaped magnetic conductive part is not fixed on dynamic tactile bridge or stationary contact bridge, and the U-shaped magnetic conductive part is fixed on
The inactive position of electric appliance.
Compared with prior art, the invention has the advantages that：U-shaped magnetic conductive part reinforces the outside arc blow-out magnetic flux of arc gap,
Magnetic conductive board reduces the inside arc blow-out magnetic flux of arc gap, to increase total outside arc blow-out magnetic flux, improves outside arc blow-out power, has and improve electricity
Device arc extinguishing ability, it is simple in structure, reliably, it is at low cost the features such as.
Description of the drawings
Fig. 1 is the structural schematic block diagram that the present invention implements one.
Fig. 2 is that the present invention implements a side view structural schematic block diagram.
Fig. 3 is that the present invention implements two side view structure schematic block diagrams.
Fig. 4 is the structural schematic block diagram that the present invention implements three.
Fig. 5 is the side view structure schematic block diagram that the present invention implements three Fig. 4.
In figure：The dynamic tactile bridges of 10-, 20- moving contacts, the U-shaped stationary contact bridges of 30-, 40- "-" type stationary contact bridges, 50- static contacts, 60-U
Type magnetic conductive part, 70- magnetic conductive boards, F- arc blow-out power.
Specific implementation mode
The present invention will be further described in detail with reference to the accompanying drawings and detailed description.
As shown in Fig. 1 ~ 5, patent of the present invention is described in further detail below in conjunction with attached drawing embodiment.
Embodiment one：A method of reinforcing arc gap arc blow-out magnetic flux and improve electric appliance arc extinguishing ability, including dynamic tactile bridge 10, moves and touch
First 20, U-shaped stationary contact bridge 30, static contact 50, U-shaped magnetic conductive part 60, magnetic conductive board 70, moving contact 20, which is set to, moves tactile 10 lower surface of bridge,
Stationary contact bridge 30 is set to the lower section of dynamic tactile bridge 10 and U-shaped, and the stationary contact being correspondingly arranged with moving contact 20 is provided on stationary contact bridge 30
First 50.
Electric appliance per extremely U-shaped stationary contact bridge 30 on a U-shaped magnetic conductive part 60 is all installed, U-shaped magnetic conductive part 60 is sleeved on U-shaped stationary contact bridge 30
Close to 50 side of static contact, towards moving contact 20, the U-shaped end face of U-shaped magnetic conductive part 60 is equal to or higher than the opening of U-shaped magnetic conductive part 60
50 end face of static contact, U-shaped magnetic conductive part 60 cover the part of static contact 50 close to the width of static contact 50, usually as shown in the figure slightly
More than the width of static contact 50.Section is fixed on the upper surface of U-shaped 30 inner cavity of stationary contact bridge in the magnetic conductive board 70 of "-" type.
In the present embodiment, when electrical contact disjunction circuit, by 30 upper part electric current of U-shaped stationary contact bridge between contact
The flux interaction of arc gap makes electric arc generate the power moved out, the arc blow-out masterpiece that electric arc is generated in this arc blow-out magnetic flux in electric arc
It is moved out under.U-shaped magnetic conductive part 60 makes the magnetic flux of U-shaped stationary contact bridge upper part electric current arc gap between contact reinforce union
In, this is reinforced and the arc blow-out magnetic flux concentrated increases the power that electric arc moves out, and so that electric arc is elongated rapidly cooling or into death of monks or nuns
Arc cover.The flux interaction of 30 lower part electric current arc gap between contact of U-shaped stationary contact bridge makes electric arc generate inwardly movement in electric arc
Power, electric arc inwardly moves under the arc blow-out force effect that this arc blow-out magnetic flux generates, and 30 lower part electric current of U-shaped stationary contact bridge generates
Flux concentrating in section be "-" type magnetic conductive board 70, this part magnetic flux do not adversely affect arc gap electric arc, leads substantially
Magnetic sheet 70 reduces the magnetic flux of the inside arc blow-out of arc gap electric arc, reduces the power of the inside arc blow-out of arc gap.Magnetic conductive part 60 and magnetic conductive board 70
The two collective effect strengthens total outside arc blow-out magnetic flux, increases outside arc blow-out power F, improves arc extinguishing ability.
Embodiment two：Compared to embodiment one, 60 upper surface of U-shaped magnetic conductive part described in the present embodiment is recessed close to stationary contact
First 50.
Embodiment three：In the present embodiment, difference lies in the stationary contact bridge is that section is in "-" type stationary contact with embodiment one
Bridge 40 and per extremely dynamic tactile bridge 10 on a U-shaped magnetic conductive part 60 is all installed, U-shaped magnetic conductive part 60 is sleeved on dynamic tactile bridge 10 close to moving contact 20
Side, opening are equal to or higher than 50 end face of static contact towards static contact 50, the lower face of U-shaped magnetic conductive part 60, and U-shaped flux sleeve 60 hides
Firmly close to the width of static contact 50, U-shaped flux sleeve 60 is not fixed is integrally fixed at electricity in dynamic touch on bridge 10 for the part of static contact 50
The inactive position of device, section are that the magnetic conductive board 70 of "-" type is fixed on 40 upper surface of "-" type stationary contact bridge.
In the present invention program, 60 surface of U-shaped magnetic conductive part is not contacted with static contact 50 or moving contact 20, described U-shaped to lead
Magnetic part is close to the part of static contact or moving contact close or larger than static contact or the width of moving contact.When installation, described U-shaped leads
Magnetic part is not fixed on dynamic tactile bridge, and the U-shaped magnetic conductive part is fixed on the inactive position of electric appliance.
When electrical contact disjunction circuit, the flux interaction of tactile 10 electric current of bridge arc gap between contact is moved in electric arc, makes electric arc
The power moved out is generated, electric arc moves out under the arc blow-out force effect that this arc blow-out magnetic flux generates, and U-shaped magnetic conductive part 60 will move
10 electric current of bridge magnetic flux of arc gap between contact is touched to reinforce and concentrate, this reinforce and the arc blow-out magnetic flux concentrated increase electric arc to
The power of outer movement makes electric arc elongate cooling rapidly or enters arc-extinguish chamber.40 electric current arc gap between contact of "-" type stationary contact bridge
Flux interaction makes electric arc generate the power inwardly moved in electric arc, electric arc under the arc blow-out force effect that this arc blow-out magnetic flux generates to
Interior movement, the flux concentrating that 40 electric current of "-" type stationary contact bridge generates is in magnetic conductive board 70, this part magnetic flux is not substantially to arc gap electric arc
It adversely affects, magnetic conductive board 70 reduces the magnetic flux of the inside arc blow-out of arc gap electric arc, reduces the power of the inside arc blow-out of arc gap.Magnetic conduction
Both part 60 and magnetic conductive board 70 collective effect strengthen total outside arc blow-out magnetic flux, increase outside arc blow-out power F, improve arc extinguishing
Ability.
Finally it should be noted that：The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, those of ordinary skills in the art should understand that：Still
It can modify to the specific implementation mode of the present invention or equivalent replacement is carried out to some technical characteristics；Without departing from this hair
The spirit of bright technical solution should all cover within the scope of the technical scheme claimed by the invention.
Claims (7)
1. a kind of method reinforced arc gap arc blow-out magnetic flux and improve electric appliance arc extinguishing ability, including the dynamic tactile bridge being arranged in electric appliance and setting
Moving contact in dynamic tactile bridge lower surface, dynamic touch are provided with stationary contact bridge below bridge, are provided on the stationary contact bridge and are touched with dynamic
The static contact that head is correspondingly arranged, it is characterised in that：Magnetic conductive board is set on each stationary contact bridge, the moving contact that is correspondingly arranged and quiet
In contact, the periphery of moving contact or static contact is cased with the magnetic conductive part that section is U-shaped and is open towards arc gap.
2. a kind of method reinforced arc gap arc blow-out magnetic flux and improve electric appliance arc extinguishing ability according to claim 1, feature exist
In when the stationary contact bridge is U-shaped, the magnetic conductive board is fixed on the upper surface of stationary contact bridge inner cavity.
3. a kind of method reinforced arc gap arc blow-out magnetic flux and improve electric appliance arc extinguishing ability according to claim 1, feature exist
In when the stationary contact bridge is "-" type, the magnetic conductive board is fixed on static contact side.
4. a kind of method reinforced arc gap arc blow-out magnetic flux and improve electric appliance arc extinguishing ability according to claim 1, feature exist
In when the stationary contact bridge is U-shaped, the U-shaped magnetic conductive part is placed on static contact, the end face etc. towards moving contact of the magnetic conductive part
In or higher than static contact end face.
5. a kind of method reinforced arc gap arc blow-out magnetic flux and improve electric appliance arc extinguishing ability according to claim 1, feature exist
In when the stationary contact bridge is "-" type, the U-shaped magnetic conductive part is placed on moving contact, the end towards static contact of the magnetic conductive part
Face is close to static contact end face.
6. a kind of method reinforced arc gap arc blow-out magnetic flux and improve electric appliance arc extinguishing ability according to claim 4 or 5, feature
It is, the U-shaped magnetic conductive part end has what is be recessed inwardly to inside contract portion.
7. a kind of method reinforced arc gap arc blow-out magnetic flux and improve electric appliance arc extinguishing ability according to claim 5 or 6, feature
It is, the U-shaped magnetic conductive part is not fixed on dynamic tactile bridge or stationary contact bridge, and the U-shaped magnetic conductive part is fixed on the inactive portion of electric appliance
Position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810393196.3A CN108389742A (en) | 2018-04-27 | 2018-04-27 | Reinforce the method that arc gap arc blow-out magnetic flux improves electric appliance arc extinguishing ability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810393196.3A CN108389742A (en) | 2018-04-27 | 2018-04-27 | Reinforce the method that arc gap arc blow-out magnetic flux improves electric appliance arc extinguishing ability |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108389742A true CN108389742A (en) | 2018-08-10 |
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ID=63065762
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810393196.3A Pending CN108389742A (en) | 2018-04-27 | 2018-04-27 | Reinforce the method that arc gap arc blow-out magnetic flux improves electric appliance arc extinguishing ability |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112542355A (en) * | 2020-11-30 | 2021-03-23 | 武汉同力同为科技有限公司 | Direct current relay with improved short circuit resistance |
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| CN201185139Y (en) * | 2008-02-25 | 2009-01-21 | 人民电器集团有限公司 | AC contactor |
| CN102427009A (en) * | 2011-11-10 | 2012-04-25 | 江苏辉能电气有限公司 | Arc blowing device for low-voltage circuit breaker |
| CN203573859U (en) * | 2013-10-22 | 2014-04-30 | 浙江正泰电器股份有限公司 | Arc blowing type motor starter |
| CN105745728A (en) * | 2013-12-18 | 2016-07-06 | 西门子公司 | Switching device comprising an electromagnetic arc driving mechanism |
| CN106057602A (en) * | 2016-08-10 | 2016-10-26 | 李蕊名 | Structure apparatus capable of improving contact breaking capacity |
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2018
- 2018-04-27 CN CN201810393196.3A patent/CN108389742A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200972833Y (en) * | 2006-10-25 | 2007-11-07 | 浙江正泰电器股份有限公司 | Automatic changover switch with quick arc extinguishing |
| CN201185139Y (en) * | 2008-02-25 | 2009-01-21 | 人民电器集团有限公司 | AC contactor |
| CN102427009A (en) * | 2011-11-10 | 2012-04-25 | 江苏辉能电气有限公司 | Arc blowing device for low-voltage circuit breaker |
| CN203573859U (en) * | 2013-10-22 | 2014-04-30 | 浙江正泰电器股份有限公司 | Arc blowing type motor starter |
| CN105745728A (en) * | 2013-12-18 | 2016-07-06 | 西门子公司 | Switching device comprising an electromagnetic arc driving mechanism |
| CN106057602A (en) * | 2016-08-10 | 2016-10-26 | 李蕊名 | Structure apparatus capable of improving contact breaking capacity |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112542355A (en) * | 2020-11-30 | 2021-03-23 | 武汉同力同为科技有限公司 | Direct current relay with improved short circuit resistance |
| CN112542355B (en) * | 2020-11-30 | 2024-02-23 | 武汉同力同为科技有限公司 | Direct current relay with improved short circuit resistance |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20180810 |