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Circuit breaker and its exhaust structure

A technology of circuit breaker and exhaust port, which is applied in the direction of circuit breaker parts, circuits, electrical components, etc., can solve the problems of untimely and unresolved airflow discharge, etc., to increase the number, avoid the reduction of arc extinguishing ability, and exhaust capacity Enhanced effect

Active Publication Date: 2017-09-15
SEARI ELECTRIC TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN203013659U assists arc extinguishing by dividing the arc, but CN203013659U still does not solve the problem of untimely air discharge

Method used

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  • Circuit breaker and its exhaust structure
  • Circuit breaker and its exhaust structure
  • Circuit breaker and its exhaust structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] The invention proposes an exhaust structure of a circuit breaker, the exhaust structure includes an exhaust port, the exhaust port is aligned with the tail of the arc extinguishing chamber, the exhaust space of the exhaust port overlaps with the wiring device of the circuit breaker, and the wiring The exhaust space is occupied when the device is not wired, and the exhaust space is vacated when the wiring device is wired.

[0023] In one embodiment, the exhaust structure includes at least three exhaust ports, the at least three exhaust ports are aligned with the tail of the arc extinguishing chamber of the circuit breaker, and the at least three exhaust ports are arranged at equal intervals. In one embodiment, the exhaust structure has three exhaust ports, which are respectively aligned with the top, middle and bottom of the tail of the arc extinguishing chamber. The wiring devices overlap. The exhaust mechanism can also have at least one split protrusion, the split pro...

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PUM

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Abstract

The present invention reveals the exhaust structure of a circuit breaker, including a row of air intake. The exhaust port is aligned with the tail of the arc. The exhaust space of the exhaust port overlapsDuring the wiring, occupy the exhaust space, and the wiring device wiring time and space out of time and space.The invention also reveals a circuit breaker with the above exhaust structure.The exhaust structure of the circuit breaker of the present invention uses the empty space of the wiring device, increasing the number of exhaust ports, increasing the exhaust space, and significantly improved the exhaust capacity.Get up to divide the arc, the split raisedness plays the role of supporting the arc extinguishing room at the same time, and avoids reduced arc extinguishing capabilities caused by the shift of the arc extinguishing room.

Description

technical field [0001] The invention relates to the field of low-voltage electrical appliances, and more specifically relates to an exhaust structure of a circuit breaker. Background technique [0002] With the development of technology, the volume of circuit breakers is getting smaller and smaller, but the technical performance indicators are getting higher and higher. During the short-circuit breaking process of the circuit breaker, the arc will generate high-temperature expansion gas. As the volume of the circuit breaker becomes smaller, if the high-temperature expansion gas cannot be removed in time, an air flow will be formed, which will prevent the arc from effectively entering the arc extinguishing chamber to extinguish the arc, forming arc backflow. The arc backflow causes the arc to stagnate on the arc track, resulting in a long breaking time, severe burning of the arc strike plate and the dynamic / static contact. [0003] For small circuit breakers, the improvemen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H73/18
CPCH01H73/18H01H9/342
Inventor 张慎虎周长青葛伟骏
Owner SEARI ELECTRIC TECH