Microchannel plate type evaporator

Abstract

The invention discloses a microchannel plate type evaporator. The microchannel plate type evaporator comprises an aluminum flat tube, the flat surface of an aluminum flat tube body is bonded with an aluminum plate, in the machining process, in order to prevent the situation that darts occur to the aluminum flat tube, then a refrigerant cannot flow, aluminum circular tubes are preset in an inner arc around which the flat tube overturns, the two preset aluminum circular tubes are pulled to be away from each other by a distance, one end of the aluminum flat tube is wound around one preset aluminum circular tube, and then the aluminum flat tube turned over by 360 degrees towards the lower portion of the other aluminum circular tube to be bent back and forth; after the aluminum flat tube body is formed, the preset aluminum circular tubes are drawn out from the two ends, an inlet tube is welded to the head end of the aluminum flat tube, the outlet tube is welded to the tail end of the aluminum flat tube, then the aluminum flat tube is bonded with the aluminum plate through a heat conduction adhesive film, and a microchannel plate type evaporator is formed; and the distance between the two preset aluminum circular tubes is based on the width of the aluminum plate. According to the scheme, the microchannel flat tube is adopted in a refrigerant channel, so that the thickness of a product is thin, and the space is saved; and the contact area between the microchannel flat tube and the aluminum plate is large, so that the flat tube and the aluminum plate are firmly bonded and are not prone to glue failure, and the heat exchange efficiency is high.

Description

technical field [0001] The invention relates to a plate type evaporator, which is especially suitable for use on household appliance refrigerators and freezers. Background technique [0002] At present, the plate evaporators of household appliance refrigerators and freezers are in the cavity of the refrigerator and freezer, and the refrigerant evaporates and absorbs heat in the evaporator, thereby achieving the purpose of reducing the temperature in the cavity of the refrigerator and freezer. [0003] The existing plate evaporators in the industry are made of round aluminum tubes coiled into a serpentine shape and then flattened to form refrigerant channels, and then the aluminum tubes are bonded to a flat aluminum plate to form a plate evaporator. There is a layer of vulcanized film between the aluminum tube and the aluminum plate to bond the aluminum tube and the aluminum plate together. [0004] During the production process, the cross-section of the aluminum tube is fla...

AI Technical Summary

Problems solved by technology

After the aluminum tube is flattened, the contact part between the flat part and the aluminum plate is not large, the heat transfer is small and the glue is easy to open, resulting in waste products

[0005] In addition, the degree of flattening of the round aluminum tube is affected by factors such as the hardness of the aluminum tube, the parameters of the punching machine, the shape of the aluminum tube bend, etc., resulting in unstable volume inside the aluminum tube, making the refrigerant charge uncertain, affecting refrigerators, The performance of the freezer

Images