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H-type finned tube and H-type finned tube heat exchanger

A finned-tube type and finned-tube technology, which is applied in the field of H-shaped finned-tube heat exchangers, can solve the problems of low airflow velocity and reduced heat transfer performance on the leeward side of the H-shaped finned tubes, and achieve local resistance. The effect of small coefficient and high heat transfer performance

Pending Publication Date: 2019-02-01
章荣发
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the low air velocity in the vortex stagnation zone, a part of the dust entering the vortex stagnation zone is deposited on the leeward side of the H-shaped finned tube, and the heat transfer performance of the leeward side of the H-shaped finned tube is significantly reduced.

Method used

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  • H-type finned tube and H-type finned tube heat exchanger
  • H-type finned tube and H-type finned tube heat exchanger
  • H-type finned tube and H-type finned tube heat exchanger

Examples

Experimental program
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Effect test

no. 1 example

[0043] like Figure 1 ~ Figure 3 As shown, an H-shaped finned tube provided by the present invention includes a base tube 80 and multiple pairs of fins. The base pipe 80 includes a base pipe main body 801 with an elliptical cross section and a base pipe connecting portion 802 located at both ends of the base pipe 80 and having a circular cross section; the base pipe main body 801 is connected to the base pipe connecting portion through a base pipe transition portion 803 802 connected. Each pair of fins includes two straight fins 81 with a symmetrical structure that are symmetrically fixedly connected to the main body 801 of the base pipe; each straight fin 81 in each pair of fins is provided with A groove conforming to the outer wall of the base pipe main body 801, and when the base pipe main body 801 is perpendicular to the horizontal plane, the inner side of each straight fin 81 in each pair of fins is higher than its outer side, so that The dust falling on the straight fi...

no. 2 example

[0053] like Figure 6 ~ Figure 8 As shown, an H-shaped finned tube provided by the present invention includes two base tubes 80' arranged in parallel and multiple pairs of fins. The base pipe 80' includes a base pipe main body 801' with an elliptical cross section and base pipe connecting parts 802' located at both ends of the base pipe 80' and having a circular cross section; the base pipe main body 801' passes through the base pipe transition part 803 ' communicates with the base pipe connection part 802'. Each pair of fins includes two triangular corrugated fins 81' with a symmetrical structure that are symmetrically fixedly connected to the base pipe main body 801' of the two base pipes 80'; The inner side of the corrugated fins 81' is provided with two grooves matching the outer wall of the base pipe main body 801', and when the base pipe main body 801' is perpendicular to the horizontal plane, each piece of triangular corrugation in each pair of fins The inner sides of...

no. 3 example

[0063] like Figure 11 ~ Figure 13 As shown, the first H-shaped finned tube in this embodiment includes two base tubes 80 "and many pairs of fins arranged in parallel. The base tube 80" includes a base tube main body 801" that is elliptical in cross section and is located at The substrate pipe connecting portion 802 ″ at both ends of the substrate pipe 80 ″ is circular in cross section; the substrate pipe main body 801 ″ communicates with the substrate pipe connecting portion 802 ″ through a substrate pipe transition portion 803 ″. Each pair of fins includes two symmetrically fixed sinusoidal corrugated fins 81" fixedly connected to the base pipe main bodies 801" of two base pipes 80"; each pair of fins is sinusoidal The inner side of the corrugated fins 81" are provided with two grooves matching the outer wall of the base pipe main body 801", and when the base pipe main body 801" is perpendicular to the horizontal plane, each pair of fins has sinusoidal corrugations The inne...

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Abstract

An H-type finned tube comprises a plurality of pairs of fins and a base tube or two base tubes which are arranged in parallel. The base tube or each one of the two base tubes comprises a base tube body with an oval cross section, wherein the base tube body is fixedly connected with the pairs of fins, in the length direction of the base tube body, two plain fins or two triangular corrugated fins ortwo sinusoidal wavy fins of each pair of fins are symmetrically distributed on the two sides of the long axis of the cross section of the base tube body, and the included angle between the two fins in each pair of fins is 40-100 degrees. Compared with the prior art, the H-type finned tube occupies small space. When the H-type finned tube is vertically arranged in the heat exchanger, the volume ofthe heat exchanger can be significantly reduced, the additional thermal resistance generated due to dust accumulation on the finned tube can be greatly reduced, and therefore the heat transfer performance of the H-type finned tube heat exchanger is further improved.

Description

technical field [0001] The invention relates to the technical field of heat exchange, in particular to an H-shaped finned tube and an H-shaped finned tube heat exchanger comprising the H-shaped finned tube. Background technique [0002] H-type finned tubes are suitable for heat exchange equipment and heating equipment in energy, chemical, metallurgy, refrigeration and other industries. Existing various H-type finned tubes include a base tube and several pairs of fins; each pair of fins includes two straight fins symmetrically installed on the base tube, and each pair of fins Both pieces of straight fins in the sheet are parallel to the cross-section of the base tube. The straight fins on the same side of the base tube are all parallel to each other, and the inner side of each straight fin in each pair of fins is provided with a groove matching the outer wall of the base tube. Since several straight fins are installed on both sides of the base tube, the heat transfer perfor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F1/34F28D7/08
CPCF28D7/085F28F1/34
Inventor 章荣发
Owner 章荣发
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