Heat dissipation device with coarse surface capable of...

Heat exchange – With agitating or stirring structure

Reexamination Certificate

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Details

C165S133000

Reexamination Certificate

active

07845396

ABSTRACT:
A heat dissipation device with coarse surface capable of intensifying heat transfer includes a main body and a heat transfer intensifying unit. The main body provides a surface and the heat transfer intensifying unit is disposed on the surface. The heat transfer intensifying unit further includes at least a raised part and a plurality of fish-scale-like parts. The raised parts are disposed slightly upright from said surface and spacing apart a distance from each other. The fish-scale-like parts each are disposed on the surface of the main body next to the raised parts orderly, provide a recess toward the surface of the main body with an inclining angle from the surface of the main body, have a vertical edge and a sharp end and the sharp end is formed at an intersection of the vertical edge of the respective fish-scale-like part. The raised parts and the fish-scale-like parts allow fluid near the surface of the main body creating eddy flows, secondary flows and breaking boundary layers of the fluid for promoting rate of heat transfer.

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patent: 3741285 (1973-06-01), Kuethe
patent: 4984626 (1991-01-01), Esformes et al.
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patent: 6644388 (2003-11-01), Kilmer et al.
patent: 6883597 (2005-04-01), Thors et al.
patent: 2006/0254751 (2006-11-01), Sinha
patent: 10161732 (2003-07-01), None
patent: 02037294 (1990-02-01), None

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