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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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 improved, and the open pore structure will also weaken the strength of the plate-fin heat exchanger and reduce the pressure resistance of the plate-fin structure

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

Examples

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Embodiment approach

[0050] see Figure 1 to Figure 2 As shown, the present invention provides a core body of a plate-fin heat exchanger, comprising several partitions (1, 6), fins 100 and seals 7, and two corresponding partitions (1, 6) between the fins 100 ) support, adjacent partitions (1, 6) are sealed by seals 7 to form hot runner 4 / cold runner 5 between adjacent partitions, and several runners are stacked and connected by diffusion welding or brazing , forming a plate-fin heat exchanger core, which can form flow forms such as forward flow, countercurrent flow, and cross flow, and can realize multi-flow flow.

[0051] see Figure 3 to Figure 9 As shown, it is a schematic structural diagram of the fin 100 of the plate-fin heat exchanger; the fin 100 is mainly composed of a punched spherical convex 2 / spherical concave 3 flow channel, and the punched hole 200 includes no offset and offset There are two types of structure a, and the spherical convex / spherical concave structures on both sides of...

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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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