CN205231002U - Circuit breaker and baffle thereof - Google Patents
Circuit breaker and baffle thereof Download PDFInfo
- Publication number
- CN205231002U CN205231002U CN201520859293.9U CN201520859293U CN205231002U CN 205231002 U CN205231002 U CN 205231002U CN 201520859293 U CN201520859293 U CN 201520859293U CN 205231002 U CN205231002 U CN 205231002U
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- baffle
- baffle plate
- arc
- arc angle
- fixed contact
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Abstract
The utility model discloses a baffle of circuit breaker sets up in the both sides of the casing of circuit breaker, and wherein the baffle of one side lies in the arc angle of static contact, and the space of baffle in with the arc angle of static contact is blocked, and the baffle of both sides has the structure of symmetry. The utility model discloses still disclosed a circuit breaker, the both sides of the casing of circuit breaker are provided with the baffle, and wherein the baffle of one side lies in the arc angle of static contact, and the space of baffle in with the arc angle of static contact is blocked, and the baffle of both sides has the structure of symmetry. The utility model discloses a baffle can solve return from static contact arc angle side at short circuit breaking in -process high -temperature gas move, between the static contact to drive electric arc and remove repeatedly between saying running the arc, the condition that cause that break -time is long partially, run -on plate and moving / the static contact scaling loss is serious. This baffle can effectively cut air current and electric arc for the better entering explosion chamber of arc energy is put off arc, and break -time obviously shortens, divides disconnected effect better.
Description
Technical field
The utility model relates to low-voltage electrical field, more particularly, relates in circuit breaker for blocking the baffle plate of electric arc and air-flow.
Background technology
Along with the development of technology, the volume of circuit breaker is more and more less, but technical performance index is more and more higher.Because the volume of circuit breaker reduces, therefore the high-temperature expansion gas that circuit breaker is produced by electric arc in short circuit breaking process can form interference to electric arc in limited space, high-temperature expansion gas can hinder electric arc effectively to enter arc control device blow-out, and the time causing electric arc to stop at arc control device is outward elongated.Electric arc is stuck in outside arc control device, and the time longer meeting such as resting on Pao Hu road makes break-time partially long, and performance index decline, and the long-time electric arc stopped can make, and run-on tab and dynamic/fixed contact scaling loss is serious.
Experimental result shows, high-temperature expansion gas can cause electric arc to reflux, and makes electric current rest on outside arc control device and cannot enter arc control device.Electric arc backflow phenomenon mainly appears at the arc angle district of fixed contact, and the electric arc backflow phenomenon in this region is particularly serious.In existing circuit breaker, major part does not process the electric arc backflow phenomenon in fixed contact arc angle district, therefore there is aforesaid problem.
Chinese patent application CN103123872A discloses a kind of installation switching device with cup and guide rib, comprises case, the contact assembly in cup, arc control device, the first and second electric arc guide rails.Contact assembly comprises fixing contact and movable contact.The electric arc produced at contact assembly place when connecting directs in arc control device by the first and second electric arc guide rails.First electric arc guide rail is associated with fixed contact, wherein at least one height face of cup inside case has multiple outstanding guide rib, its region from contact assembly greatly about the direct of travel of electric arc extend with extending until arc control device region in arrange.At least one height face of cup inside case has in the region of fixed contact the outstanding contact pin with periphery contour closed circlewise, it is arranged between the guide rib of contiguous fixed contact therefor and the first electric arc guide rail, makes can be configured with the gas circulation flowed around contact pin between the guide rib and the first electric arc guide rail of contiguous fixed contact therefor.The circuit breaker that CN103123872A discloses considers the phenomenon of the electric arc backflow in fixed contact arc angle district, and devises the reflux cycle structure in fixed contact and arc angle district.The circuit breaker of CN103123872A guides the air-flow in arc angle district, can reduce the airflow reflux in arc angle district, alleviates air-flow in arc angle district and electric arc is entered to the obstruction of arc control device.But outside arc angle district, in close arc angle district, especially outside arc angle district, the air-flow of top also can cause obvious impact to electric arc, and CN103123872A does not carry out any process to the air-flow outside arc angle district, and the impact that therefore electric arc is subject to this regional gas stream still can stop the longer time.
Utility model content
The utility model is intended to propose a kind of baffle plate of circuit breaker and have the circuit breaker of this baffle plate, and this baffle plate can block the air-flow with outside in fixed contact arc angle district.
According to an embodiment of the present utility model, propose a kind of baffle plate of circuit breaker, be arranged on the both sides of the housing of circuit breaker, wherein the baffle plate of side is positioned at the arc angle of fixed contact, space in the arc angle of fixed contact is blocked by described baffle plate, and the baffle plate of both sides has symmetrical structure.
In one embodiment, the first baffle plate is positioned at the fixed contact side of housing, and the first baffle plate is positioned at the arc angle of fixed contact, and the first baffle plate blocks electric arc and/or air-flow, and the second baffle being positioned at the opposite side of housing blocks electric arc and/or air-flow.
In one embodiment, the first baffle plate and second baffle at least one of them is straightedge formula baffle plate, straightedge formula baffle plate runs through the arc angle of fixed contact and is blocked in the space in the arc angle of fixed contact.
In one embodiment, the first baffle plate and second baffle at least one of them is curved baffle, curved baffle occupies the arc angle of fixed contact and is blocked in the space in the arc angle of fixed contact.
According to an embodiment of the present utility model, propose a kind of circuit breaker, the both sides of the housing of circuit breaker are provided with baffle plate, and wherein the baffle plate of side is positioned at the arc angle of fixed contact, and the space in the arc angle of fixed contact is blocked by baffle plate, and the baffle plate of both sides has symmetrical structure.
In one embodiment, the first baffle plate is positioned at the fixed contact side of housing, and the first baffle plate is positioned at the arc angle of fixed contact, and the first baffle plate blocks electric arc and/or air-flow, and the second baffle being positioned at the opposite side of housing blocks electric arc and/or air-flow.
In one embodiment, the first baffle plate and second baffle at least one of them is straightedge formula baffle plate, straightedge formula baffle plate runs through the arc angle of fixed contact and is blocked in the space in the arc angle of fixed contact.
In one embodiment, the first baffle plate and second baffle at least one of them is curved baffle, curved baffle occupies the arc angle of fixed contact and is blocked in the space in the arc angle of fixed contact.
Baffle plate of the present utility model can solve high-temperature gas in short circuit breaking process and return between dynamic and static contact from fixed contact arc angle side, thus drive electric arc repeatedly to move between Pao Hu road, cause that break-time is partially long, situation that run-on tab and dynamic/fixed contact scaling loss is serious.This baffle plate can effectively block air-flow and electric arc, and make arc energy better enter arc control device blow-out, break-time obviously shortens, and disjunction effect is better.
Accompanying drawing explanation
The above and other feature of the utility model, character and advantage are by more obvious by what become below in conjunction with the description of drawings and Examples, and Reference numeral identical in the accompanying drawings represents identical feature all the time, wherein:
Fig. 1 discloses the structure chart of the baffle plate of the circuit breaker according to an embodiment of the present utility model.
Fig. 2 discloses the structure chart of the baffle plate of the circuit breaker according to another embodiment of the present utility model.
Fig. 3 a and Fig. 3 b discloses the structure chart of the circuit breaker according to an embodiment of the present utility model.
Fig. 4 a and Fig. 4 b discloses the structure chart of the circuit breaker according to another embodiment of the present utility model.
Fig. 5 a and Fig. 5 b discloses the structure chart of the circuit breaker according to another embodiment of the present utility model.
Embodiment
In order to effectively reduce the high-temperature expansion gas that produced by electric arc in short circuit breaking process electric arc entered to the obstruction of arc control device blow-out, the structure of the arc angle position to fixed contact is needed to be optimized, not only need the impact of the air-flow considered in arc angle district, also need to consider the airflow influence outside arc angle district.The utility model arranges baffle plate in the arc angle district of fixed contact, and the space in arc angle district is blocked by baffle plate.The utility model arranges the baffle plate with symmetrical structure in the position that the opposite side of housing is corresponding with arc angle district simultaneously, makes all can be truncated with the air-flow outside arc angle district in arc angle district, reduces the electric arc backflow phenomenon in arc angle district.Electric arc is made can more effectively to enter into arc control device blow-out.
The baffle plate of this circuit breaker is arranged on the both sides of the housing of circuit breaker, and wherein the baffle plate of side is positioned at the arc angle of fixed contact, and the space in the arc angle of fixed contact is blocked by this baffle plate.This baffle plate can adopt various ways, and its main function is the space blocked in arc angle.The baffle plate of opposite side has symmetrical structure.Symmetrical structure refers to that the baffle plate of opposite side is arranged on symmetrical position herein, on the position that namely on housing, opposite side is corresponding, and has corresponding size.Or can understand like this, if also have a fixed contact at the opposite side of housing, so opposite side baffle plate is just in time arranged in the arc angle district of this virtual fixed contact and is blocked in the space in arc angle district." symmetry " that it should be noted that herein refers to installation site and the size of baffle plate, and the shape for baffle plate not requires completely the same, can describe in detail below this.
Fig. 1 discloses the structure chart of the baffle plate of the circuit breaker according to an embodiment of the present utility model.In the embodiment shown in fig. 1, the baffle plate 101 be formed on housing 103 is straightedge formula baffle plates 111.Straightedge formula baffle plate 111 runs through the arc angle 102 of fixed contact and is blocked in the space in the arc angle 102 of fixed contact.In the illustrated embodiment in which, straightedge formula baffle plate 111 longitudinally runs through arc angle 102, the space in arc angle 102 is divided into two not connected parts.
Fig. 2 discloses the structure chart of the baffle plate of the circuit breaker according to another embodiment of the present utility model.In the embodiment shown in Figure 2, the baffle plate 101 be formed on housing 103 is curved baffles 112.Curved baffle 112 occupies the arc angle 102 of fixed contact and is blocked in the space in the arc angle 102 of fixed contact.In the illustrated embodiment in which, curved baffle 112 has the shape matched with arc angle 102, and curved baffle 112 occupies the space in arc angle 102.
Except the shape of the baffle plate shown in Fig. 1 and Fig. 2, can also adopt the baffle plate of other shapes, the effect of baffle plate is the space blocked in arc angle.
There is a baffle plate separately: the first baffle plate and second baffle in the both sides of the housing of circuit breaker.First baffle plate is positioned at the side of housing upper face to fixed contact, and the first baffle plate is positioned at the arc angle district of fixed contact.Second baffle is positioned at the opposite side of housing, and second baffle has and the first baffle plate symmetrical structure.Namely suppose also have a symmetrical fixed contact at the opposite side of housing, so the second side shield is just in time arranged in the arc angle district of this virtual fixed contact and is blocked in the space in arc angle district.First baffle plate and second baffle all have the effect blocking electric arc and/or air-flow.
The utility model also proposes a kind of circuit breaker with above-mentioned baffle plate.The both sides of the housing of circuit breaker are provided with baffle plate, and wherein the baffle plate of side is positioned at the arc angle of fixed contact, and the space in the arc angle of fixed contact is blocked by described baffle plate, and the baffle plate of both sides has symmetrical structure.First baffle plate is positioned at the fixed contact side of housing, and the first baffle plate is positioned at the arc angle of fixed contact, and second baffle is positioned at the opposite side of housing.First baffle plate and second baffle all have the effect blocking electric arc and/or air-flow.The form of baffle plate can be the straightedge formula baffle plate shown in Fig. 1, also can be the curved baffle shown in Fig. 2, or also can adopt the other forms of baffle plate that can block the space in arc angle district.
Fig. 3 a and Fig. 3 b discloses the structure chart of the circuit breaker according to an embodiment of the present utility model.In the illustrated embodiment in which, the first baffle plate of the housing both sides of circuit breaker is identical with the shape of second baffle, and position is also symmetrical.First baffle plate and second baffle are straightedge formula baffle plate.As shown in Figure 3 a, being positioned at housing upper face to the first baffle plate 301 of fixed contact side is straightedge formula baffle plate, and the first baffle plate 301 blocks electric arc and/or air-flow.In Fig. 3 a, arrow is depicted as electric arc and/or air flow path.As shown in Figure 3 b, the second baffle 302 being positioned at the opposite side of housing is also straightedge formula baffle plate, and the position of second baffle 302 and the first baffle plate 301 symmetry, second baffle 302 blocks electric arc and/or air-flow.In Fig. 3 b, arrow is depicted as electric arc and/or air flow path.
Fig. 4 a and Fig. 4 b discloses the structure chart of the circuit breaker according to another embodiment of the present utility model.In the illustrated embodiment in which, the first baffle plate of the housing both sides of circuit breaker is identical with the shape of second baffle, and position is also symmetrical.First baffle plate and second baffle are curved baffle.As shown in fig. 4 a, being positioned at housing upper face to the first baffle plate 401 of fixed contact side is curved baffle, and the first baffle plate 401 blocks electric arc and/or air-flow.In Fig. 4 a, arrow is depicted as electric arc and/or air flow path.As shown in Figure 4 b, the second baffle 402 being positioned at the opposite side of housing is also curved baffle, and the position of second baffle 402 and the first baffle plate 401 symmetry, second baffle 402 blocks electric arc and/or air-flow.In Fig. 4 b, arrow is depicted as electric arc and/or air flow path.
The shape being positioned at the baffle plate of housing both sides also can be different.Fig. 5 a and Fig. 5 b discloses the structure chart of the circuit breaker according to another embodiment of the present utility model.In the illustrated embodiment in which, the first baffle plate of the housing both sides of circuit breaker is different with the shape of second baffle, but positional symmetry, and size is also corresponding.As shown in Figure 5 a, being positioned at housing upper face to the first baffle plate 501 of fixed contact side is straightedge formula baffle plate, and the first baffle plate 501 of straightedge formula blocks electric arc and/or air-flow.In Fig. 5 a, arrow is depicted as electric arc and/or air flow path.As shown in Figure 5 b, the second baffle 502 being positioned at opposite side on housing is curved baffle, and the second baffle 502 of arc blocks electric arc and/or air-flow.In Fig. 5 b, arrow is depicted as electric arc and/or air flow path.Fig. 5 a and Fig. 5 b explains the implication of " symmetrical structure " of the present utility model better, symmetrical structure refers to that the second baffle of opposite side is arranged on the position with the first baffle plate symmetry, namely on the position that on housing, opposite side is corresponding, and there is corresponding size.Or can understand like this, if also have a fixed contact at the opposite side of housing, so the second baffle of opposite side is just in time arranged in the arc angle district of this virtual fixed contact and is blocked in the space in arc angle district." symmetry " refers to installation site and the size of baffle plate, and the shape for baffle plate not requires completely the same.
Baffle plate of the present utility model can solve high-temperature gas in short circuit breaking process and return between dynamic and static contact from fixed contact arc angle side, thus drive electric arc repeatedly to move between Pao Hu road, cause that break-time is partially long, situation that run-on tab and dynamic/fixed contact scaling loss is serious.This baffle plate can effectively block air-flow and electric arc, and make arc energy better enter arc control device blow-out, break-time obviously shortens, and disjunction effect is better.
Above-described embodiment is available to be familiar with person in the art to realize or to use of the present utility model; those skilled in the art can when not departing from utility model thought of the present utility model; various modifications or change are made to above-described embodiment; thus protection range of the present utility model not limit by above-described embodiment, and should be the maximum magnitude meeting the inventive features that claims are mentioned.
Claims (8)
1. a baffle plate for circuit breaker, is characterized in that, is arranged on the both sides of the housing of circuit breaker, wherein the baffle plate of side is positioned at the arc angle of fixed contact, space in the arc angle of fixed contact is blocked by described baffle plate, and the baffle plate of both sides has symmetrical structure, and described baffle plate is straightedge formula or arc.
2. the baffle plate of circuit breaker as claimed in claim 1, it is characterized in that, the first baffle plate is positioned at the fixed contact side of housing, and the first baffle plate is positioned at the arc angle of fixed contact, first baffle plate blocks electric arc and/or air-flow, and the second baffle being positioned at the opposite side of housing blocks electric arc and/or air-flow.
3. the baffle plate of circuit breaker as claimed in claim 2, is characterized in that, described first baffle plate and second baffle at least one of them is straightedge formula baffle plate, straightedge formula baffle plate runs through the arc angle of fixed contact and is blocked in the space in the arc angle of fixed contact.
4. the baffle plate of circuit breaker as claimed in claim 2, is characterized in that, described first baffle plate and second baffle at least one of them is curved baffle, curved baffle occupies the arc angle of fixed contact and is blocked in the space in the arc angle of fixed contact.
5. a circuit breaker, is characterized in that, the both sides of the housing of circuit breaker are provided with baffle plate, and wherein the baffle plate of side is positioned at the arc angle of fixed contact, and the space in the arc angle of fixed contact is blocked by described baffle plate, and the baffle plate of both sides has symmetrical structure.
6. circuit breaker as claimed in claim 5, it is characterized in that, the first baffle plate is positioned at the fixed contact side of housing, and the first baffle plate is positioned at the arc angle of fixed contact, first baffle plate blocks electric arc and/or air-flow, and the second baffle being positioned at the opposite side of housing blocks electric arc and/or air-flow.
7. circuit breaker as claimed in claim 6, is characterized in that, described first baffle plate and second baffle at least one of them is straightedge formula baffle plate, straightedge formula baffle plate runs through the arc angle of fixed contact and is blocked in the space in the arc angle of fixed contact.
8. circuit breaker as claimed in claim 6, is characterized in that, described first baffle plate and second baffle at least one of them is curved baffle, curved baffle occupies the arc angle of fixed contact and is blocked in the space in the arc angle of fixed contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520859293.9U CN205231002U (en) | 2015-10-30 | 2015-10-30 | Circuit breaker and baffle thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520859293.9U CN205231002U (en) | 2015-10-30 | 2015-10-30 | Circuit breaker and baffle thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205231002U true CN205231002U (en) | 2016-05-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520859293.9U Active CN205231002U (en) | 2015-10-30 | 2015-10-30 | Circuit breaker and baffle thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205231002U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105185671A (en) * | 2015-10-30 | 2015-12-23 | 上海电科电器科技有限公司 | Circuit breaker and baffles thereof |
-
2015
- 2015-10-30 CN CN201520859293.9U patent/CN205231002U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105185671A (en) * | 2015-10-30 | 2015-12-23 | 上海电科电器科技有限公司 | Circuit breaker and baffles thereof |
| WO2017071449A1 (en) * | 2015-10-30 | 2017-05-04 | 上海电科电器科技有限公司 | Circuit-breaker and baffle thereof |
| CN105185671B (en) * | 2015-10-30 | 2019-06-25 | 上海电科电器科技有限公司 | Breaker and its baffle |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |