Anti-freezing plate heat exchanger

Abstract

The invention discloses an anti-freezing plate heat exchanger. The anti-freezing plate heat exchanger comprises a plate heat exchanger body (1). The plate heat exchanger body (1) is provided with a liquid inlet channel and a liquid outlet channel (106). A heat exchange medium gets into the plate heat exchanger body (1) to conduct heat exchange with a cooling medium to be cooled and then is discharged from the liquid outlet channel. The anti-freezing plate heat exchanger is characterized in that a fixed clamping plate is provided with a front-end port (105) communicating with the liquid outletchannel (106); and the front-end port (105) is in threaded connection with an oscillation assembly (2). The fixed clamping plate is provided with the front-end port for the liquid outlet channel of the plate heat exchanger. Meanwhile, a blocking assembly is mounted at the front-end port. Ultrasonic waves are radiated into the liquid outlet channel through an oscillation metal net frame. On one hand, frozen crystals nucleus are prevented from being formed in the liquid outlet channel; on the other hand, the crystal nucleus condensed on the plate heat exchanger around the liquid outlet channel are made to fall off. The two processes are conducted simultaneously, and occurrence of freezing is effectively avoided.

Description

technical field [0001] The invention belongs to the technical field of plate heat exchangers, in particular to anti-freezing plate heat exchangers, and more specifically, the plate heat exchangers are brazed heat exchangers. Background technique [0002] The plate heat exchanger (brazed heat exchanger) has a liquid inlet channel and a liquid outlet channel, especially the temperature of the medium in the liquid outlet channel is low, and it is prone to freezing. For the plate heat exchanger, once freezing occurs The phenomenon is very easy to cause damage to the plate heat exchanger and cannot continue to work. The freezing is formed by the growth of crystal nuclei in the fluid. After a long time of operation of the heat exchanger, the ice crystal nuclei will gradually condense into ice, which will gradually block the heat exchange circulation channels in the plate heat exchanger and make the plate heat exchanger The heat exchange efficiency of the plate heat exchanger is r...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an anti-freezing plate heat exchanger. By adding an ultrasonic agitation component, the ultrasonic wave is transmitted to the fluid in the liquid outlet channel, on the one hand, the generation of crystal nuclei can be suppressed, and on the other hand, the condensation in the liquid outlet channel can be prevented. The ice crystals on the edge of the surrounding heat exchange plates fall off in time and are discharged with the fluid to solve the technical problem of easy freezing in the outlet channel

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