CN116864353A - Arc extinguishing chamber and circuit breaker - Google Patents
Arc extinguishing chamber and circuit breaker Download PDFInfo
- Publication number
- CN116864353A CN116864353A CN202310665809.5A CN202310665809A CN116864353A CN 116864353 A CN116864353 A CN 116864353A CN 202310665809 A CN202310665809 A CN 202310665809A CN 116864353 A CN116864353 A CN 116864353A
- Authority
- CN
- China
- Prior art keywords
- arc
- extinguishing
- sheet
- gate
- sheets
- 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.)
- Pending
Links
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 239000004332 silver Substances 0.000 claims description 4
- 230000003068 static effect Effects 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000010891 electric arc Methods 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
-
- 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
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention relates to the technical field of low-voltage electric appliances, in particular to an arc-extinguishing chamber and a circuit breaker, wherein the arc-extinguishing chamber comprises mounting seats, the edges of the mounting seats comprise vertical sections, corner sections and horizontal sections which are sequentially connected, the two mounting seats are arranged in parallel at intervals, a first arc-extinguishing sheet group is arranged on the vertical sections of the two mounting seats, a second arc-extinguishing sheet group is arranged above the first arc-extinguishing sheet group along the vertical sections and the corner sections, a third arc-extinguishing sheet group is arranged above the second arc-extinguishing sheet group along the horizontal sections, and insulating side plates for covering the side surfaces of the first arc-extinguishing sheet group, the side surfaces of the second arc-extinguishing sheet group and the side surfaces of the third arc-extinguishing sheet group are respectively arranged on the outer sides of the two mounting seats. The space of the arc-extinguishing chamber is utilized to the maximum extent, the surface area of the arc-extinguishing gate sheet is increased, the arc-extinguishing capability is improved, the ideal elongated arc is guaranteed to be cut by the arc-extinguishing gate sheet, the electric life performance of the arc-extinguishing chamber is improved, the manufacture and the assembly are convenient, and the arc-extinguishing chamber is convenient to integrate in the existing circuit breaker.
Description
Technical Field
The invention relates to the technical field of piezoelectric devices, in particular to an arc extinguishing chamber and a circuit breaker.
Background
The arc-extinguishing chamber is used as an important functional component in the low-voltage electrical appliance and is used for extinguishing the electric arc between the movable contact and the fixed contact of the switch during the switching, the performance of the arc-extinguishing chamber plays a decisive role in the breaking capacity and the service life of the low-voltage electrical appliance, in particular to the arc-extinguishing chamber in the circuit breaker, so that the performance of the arc-extinguishing chamber, in particular the elongation and the cooling capacity of the electric arc, is always an important means for pursuing high breaking capacity in the field of low-voltage electrical appliances.
At present, the method for improving the performance of the arc-extinguishing chamber is to increase the surface area of arc-extinguishing grid plates and increase the number of grid plates to improve the capacity of the arc-extinguishing chamber, but the volume of the arc-extinguishing chamber is increased continuously to increase the volume of a circuit breaker, which obviously breaks against the trend of miniaturization development of the circuit breaker, and the reduction of the total volume of the arc-extinguishing grid plates inevitably leads to the reduction of the arc-extinguishing capability, so that the problem needs to be solved urgently.
Disclosure of Invention
Based on the above problems, an object of the present invention is to provide an arc extinguishing chamber, which optimizes the structure of the arc extinguishing chamber in a limited space and improves the arc extinguishing capability of the arc extinguishing chamber under the same volume.
Another object of the present invention is to provide a circuit breaker with high breaking capacity.
In order to achieve the above purpose, on one hand, the present invention adopts the following technical scheme:
the utility model provides an explosion chamber, it includes the mount pad, the edge of mount pad is including the section of erectting, corner section and horizontal segment that links up in proper order, two mount pad parallel interval arrangements, and be provided with first arc extinguishing bar piece group on the section of erectting of two mount pads, first arc extinguishing bar piece group includes a plurality of first arc extinguishing bar piece, each first arc extinguishing bar piece upwards superposes with parallel interval in proper order, the top of first arc extinguishing bar piece group is provided with second arc extinguishing bar piece group along erectting section and corner section, the second arc extinguishing bar piece group includes a plurality of second arc extinguishing bar piece, each second arc extinguishing bar piece is arranged with the interval for the slope of preceding arc extinguishing bar piece settlement angle in proper order, the top of second arc extinguishing bar piece group is provided with third arc extinguishing bar piece group along the horizontal segment, third arc extinguishing bar piece group includes a plurality of third arc extinguishing bar piece, each third arc extinguishing bar piece continues to set for the interval arrangement of previous arc extinguishing bar piece slope settlement angle in proper order, the outside of two mount pads is provided with the side of first arc extinguishing bar piece group respectively, the side of second arc extinguishing bar piece group, the side of third arc extinguishing bar group covers.
Optionally, a plurality of slots are formed on the first arc-extinguishing gate sheet, the second arc-extinguishing gate sheet and the third arc-extinguishing gate sheet corresponding to the arrangement positions of the arc-extinguishing gate sheets on the outer side surface of the mounting seat, and the arc-extinguishing gate sheets are matched and inserted with the slots of the two mounting seats through the U-shaped slots.
Optionally, the bottoms of the U-shaped grooves are inclined relative to the two side walls, and the inclination directions of the bottoms of the U-shaped grooves of the adjacent arc extinguishing grid plates are opposite.
Optionally, positioning protrusions are respectively arranged on the two side edges of the first arc-extinguishing grid sheet, the two side edges of the second arc-extinguishing grid sheet and the two side edges of the third arc-extinguishing grid sheet, and bayonets are arranged on the insulating side plates corresponding to the positioning protrusions.
Optionally, the bottom of the vertical section and the top of the horizontal section are respectively provided with an arc striking sheet, and the two mounting seats, the two arc striking sheets and each arc extinguishing grid sheet enclose to form a complete arc extinguishing cavity.
Optionally, the angle between the corner section and the upright section is 34 °.
Alternatively, the angle is set to 1 °.
Optionally, the distance between two adjacent first arc-extinguishing gate sheets, the distance between the first arc-extinguishing gate sheets and the second arc-extinguishing gate sheets, the distance between two adjacent second arc-extinguishing gate sheets, the distance between the second arc-extinguishing gate sheets and the third arc-extinguishing gate sheets, and the distance between two adjacent third arc-extinguishing gate sheets are the same.
In conclusion, the arc-extinguishing chamber passes through the multiunit and arranges the arc-extinguishing bars piece according to special design to constitute complete arc-extinguishing chamber with mount pad, insulating curb plate, maximized the space that has utilized the explosion chamber, increased the surface area of arc-extinguishing bars piece, promoted the arc-extinguishing ability, do benefit to the guarantee ideal and extend electric arc and supply the arc-extinguishing bars piece to cut, improve the electric life performance of explosion chamber, and be convenient for make and assembly, conveniently integrate in current circuit breaker.
On the other hand, the invention adopts the following technical scheme:
a circuit breaker comprises a shell, a moving contact, a fixed contact and the arc extinguishing chamber, wherein the moving contact, the fixed contact and the arc extinguishing chamber are arranged in the shell, the arc extinguishing chamber is positioned in a separation and combination area of the moving contact and the fixed contact, and a static silver point on the fixed contact is embedded on an arc striking plate of the arc extinguishing chamber.
In conclusion, the circuit breaker can improve arc voltage and embody good breaking capacity through the arc extinguishing chamber structure, and the service life of the low-voltage electrical appliance is prolonged.
Drawings
Fig. 1 is a schematic structural diagram of an arc extinguishing chamber according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an arc extinguishing chamber according to an embodiment of the present invention;
fig. 3 is an exploded view of an arc chute according to an embodiment of the present invention;
fig. 4 is a cross-sectional view of an arc chute provided by an embodiment of the present invention;
fig. 5 is a schematic view of a first arc chute sheet in an arc chute according to an embodiment of the present invention;
fig. 6 is a schematic view of a second arc chute sheet in the arc chute according to the embodiment of the present invention;
fig. 7 is a schematic view of a third arc chute sheet in the arc chute according to the embodiment of the present invention;
fig. 8 is a schematic structural diagram of a circuit breaker according to an embodiment of the present invention.
In the figure:
1. a mounting base; 11. an upright section; 12. a corner section; 13. a horizontal section; 14. a slot;
2. a first arc extinguishing sheet group; 21. a first arc extinguishing gate sheet; 22. a U-shaped groove; 23. a groove bottom; 24. positioning the bulge;
3. a second arc extinguishing sheet group; 31. the second arc extinguishing grid piece;
4. a third arc extinguishing sheet group; 41. a third arc extinguishing gate sheet;
5. an insulating side plate; 51. a bayonet;
6. an arc striking piece;
100. an arc extinguishing chamber;
200. a housing;
300. a moving contact;
400. a stationary contact; 401. silver static spot.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar parts throughout, or parts having like or similar functions. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, mechanically connected, electrically connected, indirectly connected through an intermediary, or may be in communication with each other between two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present invention, unless explicitly stated and limited otherwise, a first feature "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature. The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
Referring to fig. 1 to 4, the preferred embodiment provides an arc extinguishing chamber 100, which comprises a mounting base 1, wherein the edge of the mounting base 1 comprises an upright section 11, a corner section 12 and a horizontal section 13 which are sequentially connected, so as to form a figure similar to a 7 shape, and the arc is sufficiently limited in a limited space. In particular, the angle between the corner section 12 and the upright section 11 is preferably 30 ° to 40 °, in this example 34 °.
Wherein, two mount pads 1 are arranged at parallel intervals, and be provided with first arc extinguishing piece group 2 on the upright section 11 of two mount pads 1, first arc extinguishing piece group 2 includes a plurality of first arc extinguishing bars piece 21, see fig. 5 in detail, each first arc extinguishing bars piece 21 upwards overlaps at parallel interval in proper order, and the arc extinguishing bars piece is about 2mm, and the interval design of adjacent arc extinguishing bars piece is about 2.5mm.
The second arc extinguishing sheet group 3 is disposed above the first arc extinguishing sheet group 2 along the upright section 11 and the corner section 12, the second arc extinguishing sheet group 3 includes a plurality of second arc extinguishing gate sheets 31, see fig. 6 in detail, each second arc extinguishing gate sheet 31 is arranged at intervals inclined at a set angle with respect to the previous arc extinguishing gate sheet in sequence, and the set angle is illustratively 1 ° and is not limited.
Wherein, a third arc-extinguishing sheet group 4 is arranged above the second arc-extinguishing sheet group 3 along the horizontal section 13, the third arc-extinguishing sheet group 4 comprises a plurality of third arc-extinguishing gate sheets 41, as shown in fig. 7, and each third arc-extinguishing gate sheet 41 is continuously arranged at intervals in a manner of being inclined by 1 degree relative to the previous arc-extinguishing gate sheet.
Preferably, the space between two adjacent first arc-extinguishing gate sheets 21, the space between the first arc-extinguishing gate sheets 21 and the second arc-extinguishing gate sheets 31, the space between two adjacent second arc-extinguishing gate sheets 31, the space between the second arc-extinguishing gate sheets 31 and the third arc-extinguishing gate sheets 41, and the space between two adjacent third arc-extinguishing gate sheets 41 are all the same or approximately the same, on one hand, space is fully utilized, and on the other hand, arc-extinguishing effect is improved.
In addition, insulating side plates 5 that cover the side surfaces of the first arc extinguishing sheet group 2, the side surfaces of the second arc extinguishing sheet group 3, and the side surfaces of the third arc extinguishing sheet group 4 are respectively provided on the outer sides of the two mounting bases 1.
As shown in fig. 5 to 7, a U-shaped groove 22 (taking the first arc-extinguishing gate sheet 21 as an example) is formed on the first arc-extinguishing gate sheet 21, the second arc-extinguishing gate sheet 31 and the third arc-extinguishing gate sheet 41 respectively, a plurality of slots 14 are formed on the outer side surface of the mounting seat 1 corresponding to the arrangement positions of the arc-extinguishing gate sheets, and the arc-extinguishing gate sheets are matched and inserted with the slots 14 of the two mounting seats 1 through the U-shaped groove 22, so that convenient assembly is realized.
In particular, the bottoms 23 of the U-shaped grooves 22 are inclined relative to the two side walls, and the inclination directions of the bottoms 23 of the U-shaped grooves 22 of the adjacent arc extinguishing grid plates are opposite, so that high and low wall surfaces are formed, and the arc extinguishing is facilitated compared with a neat groove shape.
Further, positioning protrusions 24 (taking the first arc-extinguishing grid piece 21 as an example) are respectively arranged on two side edges of the first arc-extinguishing grid piece 21, two side edges of the second arc-extinguishing grid piece 31 and two side edges of the third arc-extinguishing grid piece 41, bayonets 51 are formed on the insulating side plates 5 corresponding to the positioning protrusions 24, one positioning protrusion 24 is arranged on one side edge in the drawing, two positioning protrusions 24 are arranged on the other side edge in the drawing, and foolproof of the front side and the back side of the arc-extinguishing grid piece is facilitated during installation.
In addition, the bottom of erect section 11 and the top of horizontal segment 13 are provided with striking piece 6 respectively, and two mount pad 1, two striking pieces 6 enclose into complete arc extinguishing chamber with each arc extinguishing bars piece.
On this basis, the present embodiment further provides a circuit breaker, as shown in fig. 8, which includes a housing 200, a moving contact 300, a fixed contact 400 and the arc extinguishing chamber 100, wherein the moving contact 300, the fixed contact 400 and the arc extinguishing chamber 100 are disposed in the housing 200, the arc extinguishing chamber 100 is located in the separating and combining area of the moving contact 300 and the fixed contact 400, and a static silver point 401 on the fixed contact 400 is embedded on the striking plate 6 of the arc extinguishing chamber 100.
Thus, an arc generated at the moment when the movable contact 300 and the stationary contact 400 are opened and closed is accurately guided into the arc extinguishing chamber 100, and is effectively extinguished.
In conclusion, the arc extinguishing chamber is formed into a complete arc extinguishing cavity through the plurality of groups of arc extinguishing grid sheets which are arranged according to the special design, and the arc extinguishing chamber, the installation seat and the insulating side plates, the space of the arc extinguishing chamber is utilized to the maximum, the surface area of the arc extinguishing grid sheets is enlarged, the arc extinguishing capability is improved, the ideal arc lengthening and arc extinguishing grid sheet cutting is guaranteed, the electric life performance of the arc extinguishing chamber is improved, the manufacture and the assembly are convenient, the arc extinguishing chamber is conveniently integrated in the existing circuit breaker, and in addition, the circuit breaker adopting the arc extinguishing chamber structure can improve the arc voltage, embody good breaking capability and prolong the service life of a low-voltage electrical appliance.
The above embodiments merely illustrate the basic principles and features of the present invention, and the present invention is not limited to the above embodiments, but can be variously changed and modified without departing from the spirit and scope of the present invention, which is within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The arc extinguishing chamber is characterized by comprising a mounting seat (1), wherein the edge of the mounting seat (1) comprises an upright section (11), a corner section (12) and a horizontal section (13) which are sequentially connected,
the two installation seats (1) are arranged in parallel at intervals, the upright sections (11) of the two installation seats (1) are provided with first arc-extinguishing sheet groups (2), the first arc-extinguishing sheet groups (2) comprise a plurality of first arc-extinguishing gate sheets (21), the first arc-extinguishing gate sheets (21) are sequentially overlapped upwards at intervals in parallel,
the upper part of the first arc-extinguishing sheet group (2) is provided with a second arc-extinguishing sheet group (3) along the vertical section (11) and the corner section (12), the second arc-extinguishing sheet group (3) comprises a plurality of second arc-extinguishing gate sheets (31), each second arc-extinguishing gate sheet (31) is arranged at intervals in a manner of being inclined by a set angle relative to the previous arc-extinguishing gate sheet in sequence,
a third arc-extinguishing sheet group (4) is arranged above the second arc-extinguishing sheet group (3) along the horizontal section (13), the third arc-extinguishing sheet group (4) comprises a plurality of third arc-extinguishing gate sheets (41), each third arc-extinguishing gate sheet (41) continuously inclines at intervals of the set angle relative to the previous arc-extinguishing gate sheet in turn,
the outer sides of the two mounting seats (1) are respectively provided with an insulating side plate (5) for covering the side surfaces of the first arc-extinguishing sheet group (2), the side surfaces of the second arc-extinguishing sheet group (3) and the side surfaces of the third arc-extinguishing sheet group (4).
2. The arc extinguishing chamber according to claim 1, wherein the first arc extinguishing gate sheet (21), the second arc extinguishing gate sheet (31) and the third arc extinguishing gate sheet (41) are respectively provided with a U-shaped groove (22), a plurality of slots (14) are formed on the outer side surface of the mounting seat (1) corresponding to the arrangement positions of the arc extinguishing gate sheets, and the arc extinguishing gate sheets are matched and spliced with the slots (14) of the two mounting seats (1) through the U-shaped grooves (22).
3. The arc chute of claim 2 wherein the bottoms (23) of the U-shaped grooves (22) are inclined relative to the side walls and the bottoms (23) of the U-shaped grooves (22) of adjacent arc chute sheets are inclined in opposite directions.
4. The arc extinguishing chamber according to claim 1, wherein positioning protrusions (24) are respectively arranged on two side edges of the first arc extinguishing gate sheet (21), two side edges of the second arc extinguishing gate sheet (31) and two side edges of the third arc extinguishing gate sheet (41), and bayonets (51) are formed on the insulating side plates (5) corresponding to the positioning protrusions (24).
5. The arc extinguishing chamber according to claim 1, characterized in that the bottom end of the vertical section (11) and the top end of the horizontal section (13) are respectively provided with an arc striking sheet (6), and the two mounting seats (1), the two arc striking sheets (6) and the arc extinguishing grid sheets enclose a complete arc extinguishing chamber.
6. The arc chute according to claim 1, characterized in that the angle of the corner section (12) to the upright section (11) is 34 °.
7. The arc chute of claim 1 wherein the set angle is 1 °.
8. The arc chute according to claim 1, characterized in that the spacing between two adjacent first arc-extinguishing gate sheets (21), the spacing between a first arc-extinguishing gate sheet (21) and a second arc-extinguishing gate sheet (31), the spacing between two adjacent second arc-extinguishing gate sheets (31), the spacing between a second arc-extinguishing gate sheet (31) and a third arc-extinguishing gate sheet (41), the spacing between two adjacent third arc-extinguishing gate sheets (41) are all the same.
9. A circuit breaker, characterized by comprising a shell (200), a moving contact (300), a fixed contact (400) and an arc extinguishing chamber (100) according to any one of claims 1-8, wherein the moving contact (300) and the fixed contact (400) are arranged in the shell (200), the arc extinguishing chamber (100) is positioned in a separation and combination area of the moving contact (300) and the fixed contact (400), and a static silver point (401) on the fixed contact (400) is embedded on an arc striking sheet (6) of the arc extinguishing chamber (100).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310665809.5A CN116864353A (en) | 2023-06-06 | 2023-06-06 | Arc extinguishing chamber and circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310665809.5A CN116864353A (en) | 2023-06-06 | 2023-06-06 | Arc extinguishing chamber and circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116864353A true CN116864353A (en) | 2023-10-10 |
Family
ID=88220602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310665809.5A Pending CN116864353A (en) | 2023-06-06 | 2023-06-06 | Arc extinguishing chamber and circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116864353A (en) |
-
2023
- 2023-06-06 CN CN202310665809.5A patent/CN116864353A/en active Pending
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