Heat exchange – Movable heating or cooling surface – Rotary drum
Patent
1979-12-21
1983-06-21
Jones, Larry
Heat exchange
Movable heating or cooling surface
Rotary drum
165 76, 165185, G05D 2300
Patent
active
043889654
ABSTRACT:
An automatic thermal switch to control heat flow includes a first thermally conductive plate 2, a second thermally conductive plate 25 and a thermally conductive switch saddle 1 pivotally mounted to the first plate 2. A flexible heat carrier 27 is connected between the switch saddle 1 and the second plate 25. A phase-change power unit 9, including a piston 13 coupled to the switch saddle 1, is in thermal contact with the first thermally conductive plate 2. A biasing element 21 biases the switch saddle 1 in a predetermined position with respect to the first plate 2. When the phase-change power unit 9 is actuated by an increase in heat transmitted through the first plate 2, the piston 13 extends and causes the switch saddle 1 to pivot thereby varying the thermal conduction between the first and second plates 2 and 25 through the switch saddle 1 and flexible heat carrier 27. The biasing element, switch saddle and piston can be arranged to provide either a normally closed or normally opened thermally conductive path between the first and second plates.
REFERENCES:
patent: 1054926 (1913-03-01), Mantius
patent: 1652793 (1927-12-01), Perry
patent: 1815570 (1931-07-01), Jones
patent: 2994203 (1961-08-01), Lackey et al.
patent: 3112878 (1963-12-01), Snelling
patent: 3229755 (1966-01-01), Komarow
patent: 3437132 (1969-04-01), Venema
patent: 3520734 (1970-07-01), Scheve et al.
patent: 4182379 (1980-01-01), Lestak et al.
patent: 4281708 (1981-08-01), Wing et al.
Cunningham Joseph W.
Wing Lawrence D.
Jones Larry
Manning John R.
Marchant Robert D.
The United States of America as represented by the Administrator
Tresansky John O.
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