Heat dissipation device having phase-changeable medium therein

Details Heat dissipation device having phase-changeable medium therein Heat dissipation device having phase-changeable medium therein

2007-09-11

2007-09-11

Chérvinsky, Boris (Department: 2835)

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

C361S695000, C361S703000, C361S704000, C361S709000, C361S710000, C257S706000, C257S707000, C257S715000, C257S722000, C174S015200, C174S015300, C165S080300, C165S104190, C165S104210, C165S104260, C165S104330

Reexamination Certificate

active

11306700

ABSTRACT:
A heat dissipation device includes a heat dissipation body and a heat conducting body thermally combined with the heat dissipation device. The heat dissipation body includes a central portion defining a through hole therein and a plurality of fin extending from a periphery of the central portion. Each of the fins branches a plurality of portions at an end thereof. The heat conducting body includes a column thermally fitted in the through hole of the central portion of the heat dissipation body. A cavity is defined between the column and the central portion of the heat dissipation body. The cavity contains a phase-changeable medium therein, which becomes vapor once the column absorbs heat from a heat-generating electronic device.

REFERENCES:
patent: 4633371 (1986-12-01), Nagy et al.
patent: 6386274 (2002-05-01), Wang et al.
patent: 6714415 (2004-03-01), Shah
patent: 6913072 (2005-07-01), Luo
patent: 6937473 (2005-08-01), Cheng et al.
patent: 7120019 (2006-10-01), Foster et al.
patent: 7142422 (2006-11-01), Lee et al.
patent: 2002/0060902 (2002-05-01), Lee
patent: 2004/0108104 (2004-06-01), Luo

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