Protection device used in household appliance

Abstract

The invention belongs to the technical field of electrical safety, and discloses a protection device used in a household appliance. The protection device comprises a shell, the middle part of the left end of the shell is fixedly connected with an output end, the middle part of an inner cavity of the right end of the shell is fixedly connected with an input end, and the middle part of the right end of the input end extends to the outer side of the right end of the shell. According to the protection device, a self-recovery mechanism is adopted; when current flowing through a fuse exceeds a rated value, under the effect of rapid temperature rise of the output end, the temperature of evaporation liquid in a vaporization cavity is rapidly increased and the evaporation liquid is vaporized, so that the pressure intensity in the vaporization cavity is rapidly increased, and an on-off block is pushed to overcome the elastic force of a first spring to move rightwards, and therefore, the right end of the on-off block is separated from the left end of the inner cavity of the input end, the fuse is switched off; and the on-off block moves leftwards and makes contact with the left end of the inner cavity of the input end again under the action of negative pressure suction force and elastic force of the first spring after evaporation liquid in the vaporization cavity is cooled and liquefied, so that the fuse is switched on again.

Description

technical field [0001] The invention relates to the technical field of electrical safety, in particular to a protection device used in household appliances. Background technique [0002] Household appliances mainly refer to various electrical appliances and electronic appliances used in homes and similar places, also known as household appliances, civilian appliances, daily appliances, etc. Household appliances liberate people from heavy, trivial and time-consuming housework, and serve as Human beings have created a more comfortable and beautiful living and working environment that is more conducive to physical and mental health, and provided a variety of cultural and entertainment conditions, which have become the necessities of modern family life, and the protection devices of household equipment usually include fuses, air switches, etc. , when the household equipment uses too much power or short circuit occurs, the household electrical equipment can be protected by fast p...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies in the use of the existing fuse proposed in the background technology, the present invention provides a protection device used in household appliances, which has the advantages of self-recovery, rapid conduction, and cooling of the shell, and solves the problem of fuses Fuse damage, long self-recovery time, and melting of the shell

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