A three-stream spiral wound printed circuit board heat exchanger core

A printed circuit board, spiral winding technology, applied in the direction of indirect heat exchangers, heat exchanger types, heat exchange equipment, etc., can solve the problems of insufficient compact structure, insufficient heat exchanger core strength, and reduced heat exchange efficiency. Achieve the effect of reducing pumping cost, reducing pressure loss and improving heat exchange

CN112629294BActive Publication Date: 2022-04-08DALIAN MARITIME UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2022-04-08

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Abstract

The invention provides a three-stream spiral wound printed circuit board type heat exchanger core body, which includes several heat exchanger core body units that are alternately stacked from top to bottom and welded into one body by vacuum diffusion welding technology; the heat exchanger core body The unit is composed of a double-sided etched flow channel plate, a perforated single-sided etched plate, and an inverted perforated single-sided etched plate that are sequentially superimposed and welded to realize simultaneous heat exchange of two or three fluids; there are several perforations on the perforated single-sided etched plate , there are several continuous flow channels in the length direction of one side; the flow channels on the perforated single-sided etched plate and the reversed perforated single-sided etched plate are opposite, and form a cylindrical flow channel after being superimposed; double-sided A number of discontinuous flow channels are provided in the middle of the front and back sides of the etched flow channel plate, and a plurality of diversion channels are arranged on the left and right sides of the front and back sides. The invention enlarges the heat exchange area, strengthens the disturbance of the fluid, improves the heat exchange, and at the same time, the enhancement of the disturbance has the advantage of self-cleaning.
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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...

Examples

Embodiment 1

[0053] Such as Figure 1-7 As shown, a three-flow spirally wound printed circuit board heat exchanger core includes: several heat exchanger core units that are alternately stacked from top to bottom and welded into one body by vacuum diffusion welding technology. The heat exchanger core unit is composed of a double-sided etched flow channel plate 1, a perforated single-sided etched plate 2, and an inverted perforated single-sided etched plate 2, which are sequentially superimposed and welded to realize simultaneous heat exchange of two or three fluids. Wherein, the material of the double-sided etched channel plate 1 and the perforated single-sided etched plate 2 is stainless steel, copper alloy, aluminum alloy, titanium alloy or nickel-based alloy. And the double-sided etched flow channel plate 1 and the perforated single-sided etched plate 2 are provided with a number of coaxial symmetrical positioning holes 5, wherein at least two symmetrical positioning holes 5 are arranged...

Embodiment 2

[0065] Such as Figure 5 and Figure 6 As shown, different from Embodiment 1, in this embodiment, the cross-sectional shape of the flow path 6 is a semicircle, and the opposite two flow paths on the perforated single-sided etched plate 2 and the inverted perforated single-sided etched plate 2 The channels 6 are stacked to form a cylindrical flow channel.

[0066] In this example, if image 3 and Figure 4 As shown, the etched cross-sectional shape of the discontinuous channel 3 is a semicircle, which is obtained by photochemical etching. The diversion flow channel 4 is L-shaped bending shape, the opening of the bending part I on one side is opened on the side wall surface of the double-sided etched flow channel plate 1, and the end of the bending part II on the other side is connected with the discontinuous flow channel 3 Pass; the openings of the bending part I of the guide flow channel 4 on both sides of the double-sided etching flow channel plate 1 are set on the symmet...