Arc extinguishing chamber and arc extinguishing device

An arc-extinguishing device and arc-extinguishing chamber technology, applied in electrical components, electrical switches, circuits, etc., can solve the problems of unsatisfactory arc-extinguishing effect of the arc-extinguishing device, improve the short-circuit breaking capacity, ensure the arc-extinguishing speed, and reduce the volume. Effect

Pending Publication Date: 2021-03-16
DELIXI ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides an arc extinguishing chamber and an arc extinguishing device with a simple structure and good arc extinguishing effect, which solves the technical problem that the arc extinguishing effect of the arc extinguishing device in the prior art is unsatisfactory, and is suitable for use in small space electrical appliances

Method used

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  • Arc extinguishing chamber and arc extinguishing device
  • Arc extinguishing chamber and arc extinguishing device
  • Arc extinguishing chamber and arc extinguishing device

Examples

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Embodiment 1

[0036] Embodiment 1 This embodiment provides an arc extinguishing chamber 1, which includes a plurality of arc extinguishing grids, and oppositely arranged arc baffles 101 1 and 101 2, arc baffle 101 1 and arc baffle 101 2 Installing slots corresponding to the number of arc extinguishing grid pieces are opened on the vertically opposite inner sidewalls. As mentioned above, in this embodiment, the arc extinguishing grids are arranged in the chamber between the arc chute 101 and the arc chute 101 2 in parallel and at intervals along the vertical direction, and the arc extinguishing grids have a herringbone guide The arc grooves, the herringbone arc striking grooves of the two adjacent arc extinguishing grids are arranged alternately - this technical point is reflected in the existing patents, and it is not the gist of this embodiment, so it will not be described again.

[0037] Based on the above, among the above-mentioned arc extinguishing grids arranged vertically and horizont...

Embodiment 2

[0045] Embodiment 2 The difference between this embodiment and Embodiment 1 is that in this embodiment, the thickness of the upper grid sheet 103 in the upper grid sheet group gradually increases from top to bottom, and the increase range is kept within 0.01~0.1mm The thickness of the lower grid sheet 104 in the lower grid sheet group is 0.2mm more than the thickness of the upper grid sheet 103, and the lower grid sheet 104 and the upper grid sheet 103 are distinguished from the thickness level to realize the upper grid sheet group and the lower grid sheet. There is a large gap in the length of the arc cut by the grid sheet group, so as to achieve the purpose of improving the arc extinguishing effect.

[0046] As for the gap between the grids, it can be consistent with the gap setting in Embodiment 1; or, in another embodiment, the gap width between the upper grids 103 in the upper grid group gradually increases from top to bottom .

[0047] In addition, the thickness of the ...

Embodiment 3

[0049] Embodiment 3 Based on the above embodiments, in order to improve the arc striking effect of the arc extinguishing chamber 1 and further improve the arc extinguishing efficiency of the arc extinguishing chamber 1, an upper arc striking sheet is arranged above the upper grid sheet group in this embodiment 102. The upper arc runner 102 is finally arranged parallel to and spaced apart from the upper grid group, and the gap between it and the upper grid group is preferably larger than the gap between each arc-extinguishing grid in the upper grid group. Such as Figure 6 As shown, in a specific implementation structure, it can be consistent with the gap in the lower grid group.

[0050] In the above embodiment, in order to improve the sealing performance of the arc extinguishing chamber 1, the arc extinguishing grid at the bottom layer—that is, Figure 6 The bottom grid piece 105 shown in the figure is riveted and fixed with the arc shield 101 .

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Abstract

The invention provides an arc extinguishing chamber and an arc extinguishing device, and belongs to the technical field of low-voltage electrical appliances. The arc extinguishing chamber comprises aplurality of arc extinguishing grid sheets and an arc isolating plate; the plurality of arc extinguishing grid sheets are divided into an upper grid sheet group located at the upper part and a lower grid sheet group located at the lower part from top to bottom, and the thickness of the arc extinguishing grid sheets in the upper grid sheet group is smaller than that in the lower grid sheet group; and the gaps among the arc extinguishing grid sheets in the upper grid sheet group are smaller than the gaps among the arc extinguishing grid sheets in the lower grid sheet group. According to the invention, the number, the thickness, the gaps and the like of the arc extinguishing grid sheets in the arc extinguishing chamber are re-planned, so that the short-circuit breaking capacity of the circuitbreaker is greatly improved through a reasonable and hierarchical new layout.

Description

technical field [0001] The invention relates to the technical field of low-voltage electrical appliances, in particular to an arc extinguishing chamber for a circuit breaker and an arc extinguishing device thereof. Background technique [0002] Due to the separation of the static contact and the moving contact under the current-carrying condition, arc ablation of the contact will be generated, resulting in a decrease in the life of the contact, and the overall performance and safety of the electrical appliance will be affected. Therefore, the arc extinguishing device is configured to extinguish the arc to ensure the safety of electrical appliances. [0003] The static contact arc extinguishing device of a low-voltage circuit breaker in the prior art is composed of an arc extinguishing chamber and a contact system, and the contact system includes the above-mentioned static contact and moving contact. The arc extinguishing chamber is composed of several arc extinguishing grid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H9/34
CPCH01H9/34
Inventor 张俊韩畅
Owner DELIXI ELECTRIC
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