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Isothermal Cold Plate for Circuit Packages in Compact Three-Dimensional Array

IP.com Disclosure Number: IPCOM000039206D
Original Publication Date: 1987-May-01
Included in the Prior Art Database: 2005-Feb-01
Document File: 2 page(s) / 46K

Publishing Venue

IBM

Related People

Chrysler, GM: AUTHOR [+2]

Abstract

A cold plate is formed by several coolant-carrying tubes that form substantially an isothermal surface and thereby give equal cooling to all components of an associated circuit package. The tubes are coiled to give the cold plate a think rectangular shape. The coiling pattern is symmetrical about a diagonal drawn between two corners of this rectangle. The tubes enter the cold plate at one corner of this diagonal and leave at the diagonally opposite corner, and a series of cold plates can be easily interconnected. An inlet section of the tube runs along an edge of the rectangle for an appropriate distance, parallel to and physically adjacent to the inlet sections of other tubes.

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Isothermal Cold Plate for Circuit Packages in Compact Three-Dimensional Array

A cold plate is formed by several coolant-carrying tubes that form substantially an isothermal surface and thereby give equal cooling to all components of an associated circuit package. The tubes are coiled to give the cold plate a think rectangular shape. The coiling pattern is symmetrical about a diagonal drawn between two corners of this rectangle. The tubes enter the cold plate at one corner of this diagonal and leave at the diagonally opposite corner, and a series of cold plates can be easily interconnected. An inlet section of the tube runs along an edge of the rectangle for an appropriate distance, parallel to and physically adjacent to the inlet sections of other tubes. The tube then bends 90 degrees to form a coil, and then bends again to form an outlet section along the opposite edge of the rectangle, parallel and adjacent to the outlet sections of the other tubes. The drawing shows a cold plate having four tubes that are identified by suffixes a, b, c and d. Each tube has an inlet section 2, a series of coils 3, and an outlet section 4. The pattern is symmetrical about a diagonal line, but non-symmetrical variations are also useful.

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