Roll charged with heat transfer medium

Details Roll charged with heat transfer medium Roll charged with heat transfer medium

1995-06-06

1997-03-18

Ford, John K.

Heat exchange

Movable heating or cooling surface

Rotary drum

16510421, 165185, 219469, 219530, 219540, F28D 1102

Patent

active

056113943

ABSTRACT:
A roll charged with a heat transfer medium includes a heater which is easy to replace and measures by which the temperature in the axial direction of the roll can be kept uniform during operation. A hollow portion of the roll, which can be opened to the atmosphere, is located at a central axial portion of the roll. The heater is a rod-shaped heater and extends along the central longitudinal axis of the hollow portion. Metal having a low melting point is provided between the heater and an inner peripheral surface of the hollow portion. A heat transfer medium is charged in the hollow portion at the periphery thereof. The heat transfer medium may contact a circumferential part of the heater. In addition, a spiral groove or fin may be provided on an internal surface of the hollow of the portion of the roll body that is charged with the heat transfer medium.

REFERENCES:
patent: 963892 (1910-07-01), Haskins
patent: 1430222 (1922-09-01), Evans
patent: 1432864 (1922-10-01), Johnston
patent: 2578917 (1951-12-01), Bisch
patent: 2739218 (1956-03-01), Wennerlund
patent: 3291204 (1966-12-01), Norton
patent: 3619539 (1971-11-01), Taylor
patent: 4091264 (1978-05-01), Sarcia
patent: 4158128 (1979-06-01), Eudokimou et al.
patent: 4172976 (1979-10-01), Namiki et al.
patent: 4222988 (1980-09-01), Barthel
patent: 4229644 (1980-10-01), Namiki et al.
patent: 4526533 (1985-07-01), Pabst
"Elektrische Heizeinrichtungen fur Walzen und Trockenzylinder", Kunststoffe, vol. 43, No. 6, Jun. 1953, pp. P41-P42.

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