Mini frequency converter

Abstract

The invention relates to the field of frequency converters, in particular to a Mini frequency converter which comprises a box body and a heat dissipation device, the box body is provided with an installation cavity, the heat dissipation device comprises a heat dissipation box, a first reciprocating screw rod and a heat dissipation piston, the heat dissipation box is connected to the surface of the box body, a heat dissipation flow channel for storing cooling liquid is formed in the box body and located on the side, close to a rectifier bridge, of the heat dissipation box, and the heat dissipation piston is arranged in the heat dissipation flow channel. The reciprocating screw rod I is rotationally connected to the inner wall of the heat dissipation flow channel, the heat dissipation piston is in threaded connection to the outer wall of the reciprocating screw rod I, the heat dissipation flow channel is divided into two heat dissipation sections by the heat dissipation piston, and circulating holes are formed in the inner walls of the heat dissipation sections and communicate with the heat dissipation sections and an inner cavity of the heat dissipation box. Through the arrangement of the heat dissipation box, the first reciprocating screw rod and the heat dissipation piston, it is guaranteed that the inner wall of the installation cavity stably transfers heat energy to cooling liquid, stable cooling of electronic elements which are prone to heating is achieved, other electronic elements in the frequency converter are not prone to running in a high-temperature state for a long time to be consumed, and therefore the service life of the frequency converter is prolonged.

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