Thermally insulated roll and insulation assembly for a thermorol

Details Thermally insulated roll and insulation assembly for a thermorol Thermally insulated roll and insulation assembly for a thermorol

1997-01-21

2000-12-12

Atkinson, Christopher

Heat exchange

Movable heating or cooling surface

Rotary drum

165 90, 34124, 492 46, F28F 502

Patent

active

061585017

ABSTRACT:
A thermally insulated thermoroll including a shaft supported by bearings with at least one longitudinal shaft channel defined in the shaft for passing a heating medium. A flange with radial bores is connected to the shaft and a shell, with at least one longitudinal shell channel for passing the heating medium, is connected to the flange such that the flange is interposed between the shaft and the shell. Together the shaft, flange and shell form a main body of the thermoroll. At least one first insulating wall and at least one second insulating wall are disposed in the main body of the thermoroll. The first and second insulating walls being joined at respective ends to form at least one hermetically sealed insulated cavity in the main body of the thermoroll. These insulating walls may be disposed around the shaft channel and/or the shell channel to thermally insulate the shaft and/or the shell. The insulated cavity may be hermetically sealed by electron beam welding in a vacuum chamber to form a vacuum within the interior or the insulated cavity.

REFERENCES:
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patent: 4920623 (1990-05-01), Neuhoffer
patent: 4955433 (1990-09-01), Zaoralek
patent: 5370177 (1994-12-01), Fey et al.
patent: 5404936 (1995-04-01), Niskanen

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