Richard O Chu

US Patent:

6337794, Jan 8, 2002

Filed:

Feb 11, 2000

Appl. No.:

09/502536

Inventors:

Dereje Agonafer - Grand Prairie TX
Richard C. Chu - Poughkeepsie NY
Robert E. Simons - Poughkeepsie NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H05K 720

US Classification:

361690, 361687, 361692, 361735, 361752, 165104121, 1742592

Abstract:

Apparatus for cooling an electronic device, and a resultant fluid-cooled electronic apparatus are provided. In one embodiment, the apparatus includes a heat sink member with a surface for making thermal contact with the electronic device. The heat sink member has a first plurality of channels for carrying coolant fluid. The first plurality of channels are positioned in a first group and a second group such that coolant flow alternates across the member. The heat sink member further includes a second plurality of channels disposed above the first plurality of channels such that the first and second pluralities of channels comprise tiered channels. The second plurality of channels further includes a third group of channels and a fourth group of channels, wherein the third group of channels and fourth group of channels are positioned generally alternately across the member so that coolant flow also alternates direction therebetween.

US Patent:

6431260, Aug 13, 2002

Filed:

Dec 21, 2000

Appl. No.:

09/742919

Inventors:

Dereje Agonafer - Southlake TX
Richard C. Chu - Poughkeepsie NY
Robert E. Simons - Poughkeepsie NY

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

F28F 700

US Classification:

165 804, 165908, 361699, 257714

Abstract:

Cavity plate and jet nozzle assemblies are presented for use in cooling an electronic module. The assemblies include a cavity plate having one or more blind holes formed therein and one or more jet nozzles each configured to reside within a respective blind hole of the cavity plate. A lower surface of the blind hole and/or jet nozzle is curved to facilitate the flow of fluid from the blind hole after impinging upon the lower surface of the blind hole. Various jet nozzle configurations are also provided which employ pedestals or radially extending fins. Further, the radially extending fins may interdigitate with inwardly extending fins on the inner sidewall of a respective blind hole in the cavity plate. Methods of fabricating the cavity plate and jet nozzle assemblies are also presented.