Three-flow spiral winding printed circuit board type heat exchanger core

Abstract

The invention provides a three-flow spiral winding printed circuit board type heat exchanger core. The three-flow spiral winding printed circuit board type heat exchanger core comprises a plurality of heat exchanger core units which are alternately stacked from top to bottom and welded into a whole through a vacuum diffusion welding technology. Each heat exchanger core unit is formed by sequentially stacking and welding a double-sided etching runner plate, a perforated single-sided etching plate and an inverted perforated single-sided etching plate, and heat exchange of two or three kinds of fluid is achieved at the same time; a plurality of perforated holes are formed in each perforated single-sided etching plate, and a plurality of continuous straight runners are formed in the single side of each perforated single-sided etching plate in the length direction; the straight runners on the perforated single-sided etching plate and the straight runners on the inverted perforated single-sided etching plate are opposite to each other and form cylinder runners after the perforated single-sided etching plates are stacked; and a plurality of discontinuous runners are formed in the middles of the front and back surfaces of the double-sided etching runner plate, and a plurality of flow guide runners are formed in the left and right sides of the front and back surfaces. According to the invention, the heat exchange area is increased, the disturbance of the fluid is enhanced, the heat exchange amount is improved, and meanwhile, the enhancement of the disturbance has the advantage of self-cleaning.

Description

technical field [0001] The invention relates to the technical field of heat exchange devices, in particular to a core body of a three-stream spirally wound printed circuit board heat exchanger. Background technique [0002] Printed Circuit Heat Exchanger (PCHE) is a compact microchannel heat exchanger. Compared with traditional plate, plate-fin, and shell-and-tube heat exchangers, it uses photochemical etching and vacuum Diffusion welding technology has the advantages of high compactness, high pressure resistance, low temperature and high temperature resistance, high heat exchange efficiency and high reliability. In recent years, it has been widely used in nuclear energy, solar energy, natural gas, hydrogen energy and other fields. [0003] The three-stream heat exchanger refers to the heat transfer of three fluids in the single heat exchanger at the same time, which can meet the needs of more than two fluid heat exchange occasions, and has the advantages of compact structu...

AI Technical Summary

Problems solved by technology

[0004] Although the traditional three-stream heat exchanger can satisfy multi-stage or multi-stream fluid heat exchange, it faces problems such as insufficient heat exchanger core strength, insufficient compact structure, and reduced heat exchange efficiency in fields that require high temperature or low temperature, and high pressure.

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