Low-energy consumption contactor

Abstract

The invention relates to an electromagnetic contactor with simple structure, which is capable of stabilizing in a given working state without being kept by strong force. An electromagnetic mechanism comprises a fixed permanent magnet and a translational sliding electromagnet, wherein the translational sliding electromagnet is not provided with a return spring and is an armature sheathed with an electromagnetic coil. The stable keeping of the working states is realized by using the attraction and repulsion of the permanent magnet for the armature, and the rapid conversion of the working states is realized by using the mutual action of the permanent magnet and the translational sliding electromagnet.

Description

technical field [0001] The invention relates to an electromagnetic contactor. Background technique [0002] The contactor is an automatic switcher used to switch on or off the AC and DC main circuits or large-capacity control circuits with loads. It is mainly used to switch on and off electrical loads such as motors, electric heaters, electric welding machines, and lighting equipment. . The contactor can not only switch on and off the circuit, but also has the function of low voltage release protection. The contactor has a large control capacity and is suitable for frequent operation and long-distance control. It is one of the important components in the automatic control system. At present, almost all contactor bodies are composed of electromagnetic mechanisms and contact structures, and their contact actions and states are driven and maintained by electromagnets. Regardless of the normally open or normally closed type, there is always a switching action and a state maint...

AI Technical Summary

Problems solved by technology

At present, almost all contactor bodies are composed of electromagnetic mechanisms and contact structures, and their contact actions and states are driven and maintained by electromagnets. Regardless of the normally open or normally closed type, there is always a switching action and a state maintenance that require electric energy. consume

Moreover, the switching action of this type of electromagnetic contactor is affected by various factors such as structure, spring, and lubrication, so it is difficult to guarantee the long-term reliability of the work; Elastic action, resulting in slow pull-in and breaking action, resulting in arc-extended burning and reducing the service life of the contactor

At the same time, this type of electromagnetic contactor not only consumes energy during work, but also has hidden dangers of opening, incomplete closing or unstable opening due to current fluctuations. In many applications, especially in low-voltage situations, this Through the strong maintenance of energy consumption, the hidden danger is even greater

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