Heated controlled deflection roll

摘要

A heated controlled deflection roll including a center support and a rotatable roll shell surrounding the center support. A shoe assembly connects the center support and the inside surface of the rotatable roll shell. The shoe assembly includes a shoe in contact with the inside surface of the rotatable roll shell and a bladder positioned between the shoe and the center support. The shoe assembly has a length substantially equal to a length of the inside surface of the rotatable roll shell. Free space within a chamber within the rotatable roll shell is filled with a heat transfer fluid and heater elements. The heater elements have angled fins for directing the flow of the heat transfer fluid in a helical pattern towards one end of the rotatable roll shell. The heat transfer fluid returns to the opposite end of the chamber through a passage through the center support.