A blast prevention capacitor

Abstract

The invention relates to the technical field of capacitors, and more specifically relates to a blast prevention capacitor which comprises a shell body, a capacitor core and pins; a protective cover is arranged on the upper part of the shell body; horn pipes are arranged in the protective cover; air chambers are arranged below outer welding spots in the protective cover; the outer welding spots are also electrically connected with inner connecting wires; big-tip ends of the upper portions of the horn tubes wrap the air chambers and the inner connecting wires; the outer walls of the horn tubes are wrapped with heat preservation materials; small-opening ends of the lower parts of the horn pipes are provided with welding spots; a distance exists from the side wall of each horn tube to one side of the corresponding welding spot; the inner connecting wires extend downward from the gaps between the welding sports and the horn tubes and are electrically connected to the pins; and a weight bar is welded between the two welding spots. When external connecting wires are overheated due to overload or aging and when the outer welding spots are burn and melted to cause the aim chamber to be damaged, the air in the air chamber leaks. The heat heats the welding spots to cause the welding spots to melt and loose, and then the heavy bar falls and drives the inner connecting wires to get away from the outer welding spots so that the capacitor and the external power supply are disconnected to prevent fire and explosion of the capacitor.

Description

Technical field: [0001] The invention relates to the technical field of capacitors, in particular to an explosion-proof capacitor. Background technique: [0002] Capacitors, commonly referred to as capacitors, are the most widely used electrical components in electronic equipment. They are widely used in DC blocking, coupling, bypass, filtering, tuning circuits, and energy conversion control in circuits. [0003] In the prior art, the capacitor is composed of a shell cover, a shell and a core body. Generally, terminal pins are drawn out from the shell cover for connecting to the circuit, but the pins of the capacitor are generally directly welded to the core body. Up. Due to the limitations of its realization principle, AC capacitors will generate heat and overburn due to overload and aging of the wiring under the conditions of overvoltage, overcurrent, high ambient temperature, material aging, and material defects, etc., and the overheating temperature will slow down. Slo...

AI Technical Summary

Problems solved by technology

Due to the limitations of its realization principle, AC capacitors will generate heat and overburn due to overload and aging of the wiring under the conditions of overvoltage, overcurrent, high ambient temperature, material aging, and material defects, etc., and the overheating temperature will slow down. Slow lead to the inside of the capacitor, causing the capacitor to catch fire, explode and other accidents, resulting in fire of home appliances, causing loss of life and property to users

Moreover, in long-term use, when the pins are aging and fractured, the entire capacitor is generally replaced, but the capacitor itself has not failed, so unnecessary waste is generated.

[0004] For some small capacitors, due to their simple structure, it is difficult for their packaging materials to have high mechanical strength, and it is difficult to set up an explosion-proof structure due to their small size.

When the circuit or the capacitor itself fails, causing the capacitor to overheat or cause the filling material inside the capacitor to burn, it is very likely to cause the capacitor to explode

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