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A cross dendritic enhanced heat transfer fin heat exchanger

A technology of finned heat exchangers and heat exchange fins, which is applied to indirect heat exchangers, types of heat exchangers, shells of heat exchangers, etc., which can solve the problems of bulky structure, insufficient comfort, and high cost

Active Publication Date: 2020-05-19
FUJIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (1) The existing fins only increase the number of fins to meet the heat exchange requirements between the air and the wall by reducing the fin spacing, the structure is relatively heavy, the consumption of metal materials is large, and the cost is high
[0007] (2) Fin heat exchange only considers heat exchange requirements, and insufficient consideration is given to noise reduction and noise reduction requirements, resulting in high noise and insufficient comfort of fin heat exchangers

Method used

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  • A cross dendritic enhanced heat transfer fin heat exchanger
  • A cross dendritic enhanced heat transfer fin heat exchanger
  • A cross dendritic enhanced heat transfer fin heat exchanger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 As shown, the cross-branch enhanced heat exchange fin heat exchanger includes a plurality of heat exchange fins arranged in parallel. For each heat exchange fin, the fin is divided into several sections along the air flow direction. From the second section At the beginning, the windward end of each section is deflected to the side at a certain angle to form a deflected branch. The windward end of the latter section is deflected to the other side at a certain angle, and the deflected branches of the front and rear fins form a cross structure. The specific structure is as follows: figure 1 shown.

[0023] On the horizontal surface of each fin, there is an array of small holes, the specific structure is as follows figure 2 shown. In order to form a sound-absorbing cavity structure, the small holes of every two upper and lower adjacent fins are arranged alternately, that is, the small holes of the first fin are arranged on the nodes of the grid, and the...

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Abstract

The invention discloses a cross-branch-shaped heat transfer enhancement fin heat exchanger. The cross-branch-shaped heat transfer enhancement fin heat exchanger comprises a plurality of heat transferfins arranged in parallel, wherein the heat transfer fins are divided into a plurality of sections; from the second section of the heat transfer fins, deflection branches deflected towards one side ofthe heat transfer fins are arranged on the windward end of each section, and the deflection directions of the deflection branches on the adjacent two sections are opposite; and the structures of theheat transfer fins are the same, and the top ends of the deflection branches are located at the center lines of every two adjacent heat transfer fins.

Description

technical field [0001] The invention belongs to the field of air-conditioning equipment, and in particular relates to a finned heat exchanger with cross-branched enhanced heat transfer. Background technique [0002] The finned tube heat exchanger is an important part in the air conditioning system, and its good heat transfer and pressure drop characteristics are very important to maintain the quality of the system. The existing fins only need to reduce the fin spacing and increase the number of fins to meet the heat exchange requirements between the air and the wall surface, and the structure is relatively bulky. [0003] Aiming at the deficiency of straight plate fins, the present invention proposes to form a dendritic perforated fin heat exchanger by perforating several "crossovers" according to certain rules. The heat exchanger can quickly transfer the air in the central area of ​​the flow field (farthest from the heat exchange surface) to the heat exchange surface, incr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D7/00F28F1/12F28F9/22
CPCF28D7/00F28F1/12F28F9/22
Inventor 戴贵龙吴霖璟梁青张杏珂杜晓瑞
Owner FUJIAN UNIV OF TECH