Plate-fin type heat exchanger core and fin structure thereof

A heat exchanger, plate-fin type technology, applied in the field of plate-fin heat exchanger core body, can solve the problems of weakening the strength of plate-fin heat exchanger, reducing the pressure resistance capacity of plate-fin structure, and not significantly improving heat transfer performance , to achieve the effect of improving the overall heat transfer efficiency, improving the local enhanced heat transfer coefficient, and improving the problem of insufficient strength

Pending Publication Date: 2019-06-14
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, a large number of pore structures lead to a reduction in the heat transfer area, and the overall heat transfer performance has not been significantly i

Method used

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  • Plate-fin type heat exchanger core and fin structure thereof
  • Plate-fin type heat exchanger core and fin structure thereof
  • Plate-fin type heat exchanger core and fin structure thereof

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[0049] The following detailed descriptions are all exemplary descriptions and are intended to provide further detailed descriptions of the present invention. Unless otherwise specified, all technical terms used in the present invention have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the present invention are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present invention.

[0050] See Figure 1 to Figure 2 As shown, the present invention provides a plate-fin heat exchanger core, comprising a plurality of partitions (1, 6), fins 100 and seals 7, and two corresponding partitions (1, 6) are arranged between the fins 100. ) Support, the adjacent partitions (1, 6) are sealed by the seal 7 to form a hot runner 4 / cold runner 5 between the adjacent partitions, and several runners are superimposed and connected by diffusion welding or brazing ...

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Abstract

The invention discloses a plate-fin type heat exchanger core and a fin structure thereof. The plate-fin type heat exchanger core comprises a plurality of partition plates and fins; each fin is supported and fixed between the two adjacent partition plates; the part between the adjacent partition plates is sealed to form a flow channel unit; the flow channel unit forms a plurality of medium flowingheat exchange channels between the adjacent partition plates; a plurality of ball convex parts/ball concave parts are arranged on the fins; and the ball convex parts/ball concave parts are provided with punched holes to form punched ball convex parts/punched ball concave parts. The core combines various advantages of the ball convex/ball concave structures and the punched structures; the fins increase the heat exchange area; the ball convex/ball concave structures improve the loading capacity of the plate-fin structure and enhance fluid turbulence, so that a flow boundary layer and a hot boundary layer are thinned; and the punched structure forms local jet flow, so that fluid mixing convection in the fin adjacent flow channels is promoted, the vortex dead zone of the ball convex/ball concave structure is reduced, and the effects of enhancing heat transfer and reducing flowing resistance are achieved.

Description

technical field [0001] The invention relates to the technical field of plate-fin heat exchangers, in particular to a core body of a plate-fin heat exchanger. Background technique [0002] According to statistics, in the primary energy consumption worldwide, the energy passing through the heat exchanger accounts for about 80%, so improving the overall heat transfer efficiency of the heat exchanger is of great significance to saving energy. Compared with other heat exchangers, plate-fin heat exchangers have the characteristics of compact structure, high heat transfer efficiency, light weight, high flexibility, strong adaptability, and strong structure. For example, the heat transfer coefficient is 5 times higher than that of shell and tube heat exchangers. -8 times, the weight is 80% lower than that of shell-and-tube heat exchangers, and the heat transfer area density is 6-10 times that of shell-and-tube heat exchangers. It is widely used in petrochemical, aerospace, military,...

Claims

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Application Information

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IPC IPC(8): F28F3/02
CPCF28D9/0062F28F3/027F28F2215/10
Inventor 白博峰陈梦杰裴斌斌岳萌萌陈真韬
Owner XI AN JIAOTONG UNIV
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