Composite heat sink

Details Composite heat sink Composite heat sink

1999-06-18

2000-07-18

Lazarus, Ira S.

Heat exchange

Heat transmitter

165 803, 361697, 361704, 174 163, 257719, F28F 700

Patent

active

06089315&

ABSTRACT:
A heat sink includes a base plate having a bottom face adapted to be positioned on an electronic device to remove heat therefrom and a top face on which a central fin assembly and two end fin assemblies are fixed by means of screws. The central fin assembly is located between the end fin assemblies and a space is defined between the central fin assembly and each end fin assembly for receiving a clip to secure the heat sink to the electronic device. The central fin assembly has a number of fins defining passages therebetween through which air flows. Each end fin assembly has a number of fins defining passages therebetween through which air flows. The number of fins of the central fin assembly is greater than that of the end fin assemblies whereby the central fin assembly has a larger surface area for facilitating heat dissipation, while the end fin assemblies have larger passages for reducing resistance to air flowing therethrough. Preferably, the number of passages of the central fin assembly is a multiple of that of the end fin assemblies whereby each passage of the end fin assemblies is aligned with a number of passages of the central fin assembly for facilitating smooth air flow therebetween.

REFERENCES:
patent: 5437328 (1995-08-01), Simons
patent: 5706169 (1998-01-01), Yeh
patent: 5771153 (1998-07-01), Sheng
patent: 5864464 (1999-01-01), Lin
patent: 5870288 (1999-02-01), Chen
patent: 5884692 (1999-03-01), Lee et al.
patent: 5927385 (1999-07-01), Yeh
patent: 5943210 (1999-08-01), Lee et al.
patent: 5947192 (1999-09-01), Kuo
patent: 5973921 (1999-10-01), Lin
patent: 6025994 (2000-02-01), Chiou

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