Heat exchange – Flexible envelope or cover type
Patent
1990-04-03
1991-03-05
Davis, Jr., Albert W.
Heat exchange
Flexible envelope or cover type
16510419, 16510433, 361385, 174 151, H01L 23473, F28D 1500
Patent
active
049970321
ABSTRACT:
A thermal transfer means comprising a flexible bag or pouch filled with a chemically inert, electrically nonconductive, nonflammable, essentially gas-free, thermally stable, thermally conductive, body of liquid comprising fluorochemical liquid. Said bag is fabricated from a flexible, durable plastic film that has low permeability to air and the fluorochemical liquid. The configuration of the bag is conformable to adapt to the geometry of the space, formed between the surface of a heat generating component or components and the surface of a heat sink, into which the bag is inserted, thereby contacting said surfaces and providing a thermal conduction path for heat generated by the heat generating component during operation from said component to the heat sink. The liquid has a boiling point such that it down not boil at the highest operating temperature of the device. Also provided is a method for making and filling the bag such that after sealing the bag is substantially gas free.
REFERENCES:
Hultmark et al., J. M. Thermal Enhancement Modules IBN Technical Disclosure Bulletin vol. 19, No. 8, 1/1977.
"Liquid Heat Sink Cools Microcomputer," Design News, pg. 208, Sep. 4, 1989.
"Liquid Heat Sink Cools Quietly, Takes Little Space," Electronic Products, Apr. 15, 1988.
"Newswatch, Canadian High Tech Show in Toronto Claims Success For Format," Elecronic Products & Technology, pp. 42-43, Nov./Dec. 1989.
"Thermal Management of a Microcomputer Using a Liquid Heat Sink," Electronic Manufacturing, pp. 19-20, Jun. 1989.
"Thermal-Management Products, Circuit Design Requires Thermal Expertise," EDN, pp. 93-102, Jun. 22, 1989.
3M Canada, Inc., Commerical Chemicals Division, Fluorinert Liquid Heat Sink--Second Runner-Up, Best Component, Canadian High Technology Show, Oct. 17 & 18, 1989.
"13th Annual Product of the Year Awards," Electronic Products, Jan., 1989.
Danielson Richard D.
Hesselroth David A.
Stein, Jr. Ralph J.
Davis Jr. Albert W.
Kirn Walter N.
Maki Eloise J.
Minnesota Mining and Manufacturing Company
Sell Donald M.
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