Arc-less switch and manufacturing method and using method thereof

Abstract

The invention provides an arc-less switch for the arc extinction of alternating-current contactors, various relays and switch electrical appliances, and a manufacturing method and a using method thereof. The arc-less switch is arranged in an exhaust station of a relay shell, and is provided with a flame-retardant elastic soft material, an annular circular gasket, a hollow bolt and a flame-retardant adhesion agent from top to bottom to form an exhaust body, and then a unique process is utilized to manufacture a vacuum switch. The arc-less switch solves the insoluble problems of sparking and arcing in the structures of the conventional congeneric products, and has the advantages of advanced control method, no arcing, large current-carrying capacity, low cost, long service life, small volume, convenient assembly, use and replacement, wide application range, and suitability for popularization and use in the field of electrical appliances.

Description

technical field [0001] The invention relates to the field of electrical appliances, and relates to an arcless switch for preventing various types of switches, AC contactors, relays and switching systems from pulling arcs when they are closed or disconnected, and a manufacturing method and a using method thereof. Background technique [0002] Various types of switches, AC contactors, relays and their switching systems tend to produce arcing when they are closed or disconnected, which not only seriously damages the switch contacts, but also causes various accident hazards to the electrical circuit; in order to eliminate various types of switches, For the arcing problem of AC contactors, relays and their switching systems, the existing technologies and processes mainly include the following methods to overcome arcing: [0003] (1) Use a vacuum interrupter or fill the closed switch with an arc-extinguishing gas (such as SF6) to eliminate the arc; among them, there are currently ...

AI Technical Summary

Problems solved by technology

[0002] Various types of switches, AC contactors, relays and their switching systems tend to produce arcing when they are closed or disconnected, which not only seriously damages the switch contacts, but also causes various accident hazards to the electrical circuit; in order to eliminate various types of switches, For the arcing problem of AC contactors, relays and their switching systems, the existing technologies and processes mainly include the following methods to overcome arcing:

[0003] (1) Use a vacuum interrupter or fill the closed switch with an arc-extinguishing gas (such as SF6) to eliminate the arc; among them, there are currently two main switch structures in the vacuum interrupter: one is exhaust Their common feature is that there is an exhaust pipe between the closed switch or relay casing and the outside world, which needs to be exhausted through a vacuum exhaust table. The packaging process needs to be completed under vacuum conditions, and their armatures move The mechanism is located inside the vacuum system; the other is a diaphragm structure, they do not need to be exhausted, the vacuum system is directly obtained through a vacuum welding furnace, the armature mechanism is located outside the vacuum chamber, and the movement of the armature is transmitted into the vacuum chamber through the elastic sealing diaphragm Internal; no matter which method is used in the above methods, the manufacturing process is very complicated, resulting in high manufacturing costs, which is not conducive to popularization and use

[0004] (2) Use solid-state relays instead of ordinary relays to eliminate arcs, especially in the field of automation control. Although this kind of arc extinguishing device also overcomes the phenomenon of arc pulling and can achieve better arc extinguishing effects, it is easy to generate heat and has a long service life. and current carrying capacity are limited; therefore, the switches currently widely used are still mainly ordinary relays and AC contactors, and there are generally arcing phenomena and hidden dangers of accidents.

[0005] (3) At present, there is another method with better effect to eliminate the arc, which is the arc suppression circuit of the main and auxiliary switches. When disconnecting, a certain logical relationship is formed to achieve the arc-extinguishing effect; although this arc-extinguishing method can effectively overcome the arc phenomenon and achieve a better arc-extinguishing effect, its auxiliary circuit is either a controllable three-terminal circuit or an ordinary arc-extinguishing circuit. Switching circuit, when its auxiliary circuit is a controllable three-terminal circuit, the working circuit of the switching appliance is an AC circuit, and the load is an inductive load, there are problems with inrush current and conduction waveform that are not ideal, so there are still local time periods The problem of higher resistance and higher voltage drop, which will cause partial arcing phenomenon when the main switch is turned on and off; when the auxiliary circuit is an ordinary switching circuit, there is a problem of arcing in the auxiliary circuit, which will also cause the use of Electric circuits cause accident hazards; and this type of arcless switch is relatively complicated in structure, which brings a lot of trouble to production and manufacturing

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