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Conduction Cooled Enclosure for Immersion Cooling

IP.com Disclosure Number: IPCOM000106449D
Original Publication Date: 1993-Nov-01
Included in the Prior Art Database: 2005-Mar-21
Document File: 2 page(s) / 53K

Publishing Venue

IBM

Related People

Scott, GW: AUTHOR

Abstract

Immersion Cooling is attractive for removing heat from components mounted on both sides of a printed wiring board (PWB). The liquid, a fluorocarbon, conforms to the components and provides a thermal path that is not degraded by vibration.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 79% of the total text.

Conduction Cooled Enclosure for Immersion Cooling

      Immersion Cooling is attractive for removing heat from
components mounted on both sides of a printed wiring board (PWB).
The liquid, a fluorocarbon, conforms to the components and provides a
thermal path that is not degraded by vibration.

      The Figure depicts a Conduction Cooled Enclosure for Immersion
Cooling -- a sealed electronic module.  Heat is removed from the
components by nucleate boiling and transferred to cold rails by
conduction.  The module conforms to dimensional standards for
military systems and can be used with modules that are conduction
cooled.  Further, the module uses a replaceable seal of minimum
length and has no structural interfaces in the thermal path.  Thermal
expansion of the module does not affect the PWB.

      The module consists of an enclosure 1 that is attached by
screws 2 to a shell 3 that carries a connector 4.  A silicone
compound seal 5 seals the interface between the enclosure 1 and shell
3.  Geometry of the enclosure 1 and the shell 3 enhances the seal.
The seated interface 6 between the enclosure 4 and shell 3 forms a
recess 7 on both ends of the module for the seal 5.  Perfluorocarbon
liquid is added through port 8 after seal 5 is cured.

      The PWB 9 is attached to connector 4 and supported on three
edges by the internal slot 10 in the enclosure 1.  Offsetting slot 10
allows higher height components on one side of PWB 9.  Extended
surfaces 11 p...