Browse Prior Art Database

Purifying Perfluorocarbon Coolants

IP.com Disclosure Number: IPCOM000086459D
Original Publication Date: 1976-Sep-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 36K

Publishing Venue

IBM

Related People

Shields, RR: AUTHOR

Abstract

In this liquid-liquid extractor, inorganic anions are removed from perfluorocarbon liquids prior to their introduction into a liquid cooled semiconductor package.

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Purifying Perfluorocarbon Coolants

In this liquid-liquid extractor, inorganic anions are removed from perfluorocarbon liquids prior to their introduction into a liquid cooled semiconductor package.

Inorganic fluorides and chlorides may be present in perfluorocarbon coolants as received from the manufacturer at levels at or near detectability. The presence of these anions is of a major concern for they have been judged to lead to corrosion failures of the electronic components immersed in the coolant. The removal of the aforementioned anions as well as other water soluble contaminants significantly reduces the chance of failures in an electronics package due to corrosion.

The apparatus consists basically of a chamber 10 which holds the perfluorocarbon liquid to be extracted, a pair of stop cock valves 12 and 14 to allow the draining of the extracted perfluorocarbon and for introducing the extracting water phase to the chamber. A vent 16 is provided on the top cap 18 to allow water to be removed continuously from chamber 10.

In operation, the stop cocks 12 and 14 are closed and the perfluorocarbon coolant introduced through the top of the chamber 10. After the top 18 has been replaced, stop cock 14 is opened and a source of DI water is allowed to flow through a charcoal bed to remove any organic impurities in the water itself, and then into the side arm tube 20 through stop cock 14 and through the extractor jets 22 in the bottom of chamber 10. The water so introduc...