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Circuit breaker shell and circuit breaker equipped with same

A circuit breaker and shell technology, which is applied in the field of circuit breaker shells and circuit breakers with the shell, can solve problems such as potential safety hazards of circuit breakers, achieve stable arc extinguishing performance, prevent back breakdown, and stabilize positioning reliable effect

Active Publication Date: 2016-09-21
欧迪森电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The so-called prevention of the reverse discharge of the arc during the breaking process of the technical solution only plays a role in resisting the arc through the arc-shaped isolation rib, but it cannot fundamentally prevent the occurrence of back breakdown, so the circuit breaker still has safety. Hidden danger

Method used

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  • Circuit breaker shell and circuit breaker equipped with same
  • Circuit breaker shell and circuit breaker equipped with same
  • Circuit breaker shell and circuit breaker equipped with same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Such as Figure 1-3 As described above, a circuit breaker housing includes a first housing a1 and a second housing a2 that have the same shape and size and form a complete circuit breaker housing, both of which are formed with an operating mechanism accommodation area 10 and a wiring assembly accommodation area. Area, arc extinguishing chamber accommodation area 12, arc striker accommodation area 13 and enclosure wall member 6, enclosure wall member 6, the enclosure wall member 6 of the first casing a1 is surrounded by at least one ventilation channel 14, and the enclosure wall of the second enclosure a2 The component 6 is surrounded by at least one ventilation channel 14 , and both wall components 6 are provided with an arc inlet 61 communicating with the ventilation channel 14 and the accommodating area 12 of the arc extinguishing chamber.

[0050] Such as figure 1 , figure 2 As shown, the first shell a1 is integrally formed with several main anti-breakdown protrus...

Embodiment 2

[0055] Different from Embodiment 1, the circuit breaker housing is not divided into two parts, but is integrally formed by 3D printing technology, that is, the positioning protrusion 23 of the arc extinguishing grid and the second housing a2 are integrated.

Embodiment 3

[0057] The difference from Embodiment 1 is that the main anti-puncture protrusion 21 and the secondary anti-puncture protrusion 22 are arranged in parallel, that is, the height of the positioning gap 31 of the main arc extinguishing grid = the height of the positioning gap 32 of the secondary arc extinguishing grid = the secondary arc extinguishing Grille positioning gap 33 = actual arc extinguishing grid positioning gap 34 height.

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Abstract

The invention discloses a circuit breaker shell and a circuit breaker equipped with the same. At least two ventilating channels are formed between an access terminal accommodating region and an arc extinguish chamber accommodating region. Electric arc passes through the arc extinguish chamber and then enters the multiple ventilating channels through an electric arc inlet, so that the probability of re-arcing is lowered and the electric arc maintaining time is shortened; and therefore, the back breakdown phenomenon of the circuit breaker can be prevented fundamentally, and the breaking capability and the safety of the circuit breaker in use are improved.

Description

technical field [0001] The present invention relates to a circuit breaker, and more particularly, to a circuit breaker housing and a circuit breaker with the housing. Background technique [0002] Low-voltage circuit breakers are one of the most widely used electrical products in low-voltage power distribution systems. In order to obtain a higher arc voltage, the grids of the arc extinguishing chamber of the circuit breaker are closely arranged. In this way, the resistance of the arc when entering the arc extinguishing chamber is relatively large, and the stagnation time at the entrance of the grid is also relatively long. Research on low-voltage circuit breakers in recent years has shown that arcs repeatedly appear inside and outside the grid at the grid entrance, resulting in repeated drops in the arc voltage, which is the phenomenon of backside breakdown. It reduces the breaking performance of the circuit breaker and increases the arcing time. [0003] After the circui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H71/02H01H71/08H01H71/00
CPCH01H71/00H01H71/02H01H71/08
Inventor 严剑峰邓志彬
Owner 欧迪森电气有限公司
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