Browse Prior Art Database

Enclosure with Heat Exchanger for Immersion Cooling

IP.com Disclosure Number: IPCOM000106417D
Original Publication Date: 1993-Nov-01
Included in the Prior Art Database: 2005-Mar-21
Document File: 2 page(s) / 71K

Publishing Venue

IBM

Related People

Scott, GW: AUTHOR

Abstract

Conduction Cooled Electronic Modules for military systems, typically, are clamped along two edges to cold rails. The temperature drop across the clamped interfaces becomes a limiting parameter when increasing module power. Significantly higher module powers can be realized by making the heat exchanger an intergral part of the module: clamped interfaces are eliminated and the surface area for removing heat is increased.

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Enclosure with Heat Exchanger for Immersion Cooling

      Conduction Cooled Electronic Modules for military systems,
typically, are clamped along two edges to cold rails.  The
temperature drop across the clamped interfaces becomes a limiting
parameter when increasing module power.  Significantly higher module
powers can be realized by making the heat exchanger an intergral part
of the module: clamped interfaces are eliminated and the surface area
for removing heat is increased.

      The Figure shows a module having a heat exchanger on three
edges of a liquid tight chamber in which components are immersed in a
fluorocarbon liquid.  As is current practice, the liquid circulated
through the heat exchanger is not suited for direct cooling
electronic components.  The integral heat exchanger depicted is also
applicable when using a metal frame between printed wiring boards
(PWBs) for conducting heat from components.

      Module construction is similar to that described by the
Technical Disclosure Bulletin.  The module consists of an enclosure 1
that is fastened by screws 2 to connector/shell assembly 3.  An
elastomer 4 seals the module.  The PWB 5, with components 6 on both
sides, is attached to the connector/shell assembly 3 and supported on
three edges by a slot 7.  Fill port 8 permits a fluorocarbon liquid
to be added to the module.  Set screws 9 in contact with PWB 5
supports PWB 5 to minimize loading of the seal around the connector
when mating the c...