Opposite-rounded-corner oblique-breaking-type finned tube non-contact thermal resistance heat transmission element

A technology of heat transfer elements and finned tubes, applied in the field of heat exchange, can solve the problems of complex manufacturing and processing technology, large contact thermal resistance, fracture, etc., and achieve convective heat transfer, heat transfer performance improvement, and heat transfer performance good effect

Inactive Publication Date: 2014-08-27
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The heat transfer elements used in heat exchangers such as air conditioners, vehicles, and refrigeration equipment are generally composed of copper tubes, aluminum tubes or microchannel tubes and aluminum fins. The heat transfer tubes and cooling fins of the heat transfer elements are split The structure is usually connected by expansion tube or brazing method, and the manufacturing and processing technology is relatively complicated
The contact thermal resistance between the fin and the heat transfer tube is relatively large; and

Method used

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  • Opposite-rounded-corner oblique-breaking-type finned tube non-contact thermal resistance heat transmission element
  • Opposite-rounded-corner oblique-breaking-type finned tube non-contact thermal resistance heat transmission element
  • Opposite-rounded-corner oblique-breaking-type finned tube non-contact thermal resistance heat transmission element

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Embodiment Construction

[0013] like figure 1 , 2 As shown in , 3, the non-contact thermal resistance heat transfer element of the round angle obliquely cut-off finned tube designed by the present invention is composed of a heat dissipation fin 1 and a heat transfer flat tube 2 . On the upper and lower sides of the heat transfer flat tube 2, the obliquely rounded small corrugated broken fins 1 are directly shoveled, and the radiating fins 1 and the heat transfer flat tube 2 are integrated, and during the shoveling process, The inclination angle of α (0°f , the fin thickness of cooling fin 1 is δ, and the height is H p (see attached image 3 ); the wavelength of the small fin unit of the inclined pair of rounded small corrugated broken fins 1 is S 1 , the spacing between two small rounded corrugations with radius r is S 2 , the height of the small unit of the broken fin is H (see attached figure 2 ); the section thickness of heat transfer flat tube 2 is W 1 , with a width of L 1 , there are 2 t...

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PUM

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Abstract

The invention discloses an opposite-rounded-corner oblique-breaking-type finned tube non-contact thermal resistance heat transmission element and belongs to the technical field of heat exchanging. The opposite-rounded-corner oblique-breaking-type finned tube non-contact thermal resistance heat transmission element comprises radiating fins and a rectangular heat transmission flat tube. The radiating fins are oblique opposite-rounded-corner ripple breaking fins, the fins and the heat transmission flat tube are integrally formed, and welding is of no need. Contact heat resistance is of no need, heat transmission efficiency is high, a manufacturing technology is simple, the structure is compact, size is small, anti-shocking capacity is high, and accordingly the opposite-rounded-corner oblique-breaking-type finned tube non-contact thermal resistance heat transmission element can be widely used in heat exchangers of various products such as an air conditioner, cooling equipment and vehicles.

Description

technical field [0001] The invention relates to a non-contact thermal resistance heat transfer element of a finned tube with oblique cut-off rounded corners applied to various heat exchangers, and belongs to the technical field of heat exchange. Background technique [0002] The heat transfer elements used in heat exchangers such as air conditioners, vehicles, and refrigeration equipment are generally composed of copper tubes, aluminum tubes or microchannel tubes and aluminum fins. The heat transfer tubes and cooling fins of the heat transfer elements are split The structure is usually connected by expansion tube or brazing method, and the manufacturing and processing technology is relatively complicated. The contact thermal resistance between the fin and the heat transfer tube is relatively large; and the anti-vibration ability is poor. Some heat exchangers (such as construction machinery) have a harsh working environment. The joints of the tubes tend to be partially loosen...

Claims

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Application Information

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IPC IPC(8): F28F1/28
Inventor 王义春荣俊段占春赵丹伟
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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