Patent Number: 6,253,835

Title: Isothermal heat sink with converging, diverging channels

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 plurality of channels for carrying coolant fluid. The plurality of channels are positioned in a first group and a second group such that coolant flow alternates across the member. At least one channel of the plurality of channels has a fluid flow cross-section that varies over a length thereof to selectively enhance a heat transfer coefficient of the coolant fluid within the channel and thereby produce a more uniform temperature at the surface of the heat sink member when making thermal contact with the electronic device.

Inventors: Chu; Richard C. (Poughkeepsie, NY), Ellsworth, Jr.; Michael J. (Lagrangeville, NY), Simons; Robert E. (Poughkeepsie, NY)

Assignee: International Business Machines Corporation

International Classification: F28F 3/00 (20060101); F28F 3/12 (20060101); H01L 23/473 (20060101); H01L 23/34 (20060101); F28F 007/00 ()

Expiration Date: 07/03/2018