Heat sink and fan for cooling CPU chip

Details Heat sink and fan for cooling CPU chip Heat sink and fan for cooling CPU chip

1996-07-01

1998-03-31

Thompson, Gregory D.

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

165 803, 257719, 361704, 361710, H05K 720

Patent

active

057345546

ABSTRACT:
Because of space limitations, a small heat sink and a fan (of about 2".times.2".times.1/2" size) is used to cool to below 105.degree. C. (at an ambient temperature of about 40.degree. C.) a CPU chip (of about 16 mm.times.16 mm size) which uses about 30 watts current and is mounted on a motherboard of considerably larger size. A heat transferring thermostrate washer covers the chip and a pad covers the washer. Soldered to the pad is a square heat slug. Studs extend upward from the slug. The studs fit through holes in the base of the heat sink. The heat sink is of the type having plural rectangular cross-section fins extending upwardly from the base. Above the heat sink is a fan attached to the motherboard by screws at its four corners extending through heat slug and into the motherboard.

REFERENCES:
patent: 3801882 (1974-04-01), Ward
patent: 4724514 (1988-02-01), Kaufman
patent: 4879891 (1989-11-01), Hinshaw
patent: 4884331 (1989-12-01), Hinshaw
patent: 5307236 (1994-04-01), Rio et al.
patent: 5603374 (1997-02-01), Wu
patent: 5621615 (1997-04-01), Dawson

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