High production chill roll

Details High production chill roll High production chill roll

1996-08-30

1999-11-16

Atkinson, Christopher

Heat exchange

Movable heating or cooling surface

Rotary drum

165 89, 492 46, F28D 1102

Patent

active

059839937

ABSTRACT:
A chill roll for cooling a web is provided and includes a cylindrical outer roll having an inner and an outer surface, the inner surface of the outer roll having circumferential projections spaced at intervals along its length forming circumferential channels therebetween. The chill roll further has a cylindrical inner roll having an inner and an outer surface, and a diameter less than a diameter of the outer cylindrical roll and defining an annular space between the outer surface of the cylindrical inner roll and the inner surface of the cylindrical outer roll, allowing a coolant material to flow into and out of the circumferential channels and to contact the inner surface of the cylindrical outer roll to uniformly cool the outer surface of the cylindrical outer roll. A cylindrical middle shell is disposed between the inner surface of the cylindrical outer roll and the outer surface of the cylindrical inner roll allowing passage of the coolant material from the cylindrical inner roll to be transferred into and out of the circumferential channels through openings disposed along the cylindrical middle shell.

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