Heat exchange – Movable heating or cooling surface – Rotary drum
Patent
1988-06-27
1990-08-28
Davis,, Jr.
Heat exchange
Movable heating or cooling surface
Rotary drum
165 46, 165 804, 16510426, 16510433, 361385, E28D 1502, F28F 2700, H01L 23427
Patent
active
049517406
ABSTRACT:
A bellows type heat pipe which conducts heat away from an electronic device to a heat sink. The heat pipe is a sealed bellows type container which has an evaporator section at one end and a condenser section at an opposite end. The evaporator section contains a saturated radial wick while the condenser section is lined with a radial wick and a circumferential wick. A corrugated slab wick is longitudinally disposed within the heat pipe interconnecting the evaporator and the condenser sections. The evaporator section is placed on the electronic device and the condenser section is enclosed in a housing which is connected to a heat sink. In operation, the electronic device generates heat energy which causes the fluid in the evaporator to vaporize building a vapor pressure in the heat pipe. The heat pipe expands in the direction of the condenser causing the condenser section to make intimate contact with the inside of the housing. The vapors condense at the condenser section and are brought back to the evaporator section via the circumferential wick, the walls of the bellows vessel and the wick slab.
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Oktay Sevgin
Peterson George P.
Davis Jr.
Texas A & M University System
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