Method of heating a jacketed working surface of rotating roller and a rotary roller
AssigneeKvaerner Eureka a.s.
InventorsGunnar Eriksen, Sissel W. Olsen
Life of this patent
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Abstract
To obtain an enhanced evening out of differences in temperature on a roller surface, it is proposed to establish or to make a roller such that a buffer layer of oil is formed against the inside of the roller surface. This buffer layer is heated by means of a heat exchanger in which oil flows. The heat exchanger is made having open flow connection with the buffer layer.
Claims7
In a method of heating a jacketed working surface of a rotating roller by supplying heat to a fluid heat transfer medium immediately below the jacketed working surface by flowing a heating medium through a heat exchanger defining a glow path between an inlet and an outlet, the improvement which comprises flowing a first part of the heating medium into a blind space directly under said jacketed working surface, said blind space being hydraulically distinct from said flow path, and forming a buffer layer of heat transfer medium extending across the jacketed surface between the heat exchanger and the jacketed working surface.
A rotary roller comprising a jacketed working surface, a heat exchanger in a fluid heat transfer medium in an annular space immediately below the jacketed working surface, said heat exchanger comprising a system of ducts including connections to an inlet and an outlet for heating medium circulator, said heat exchanger being arranged such that a buffer layer of the fluid heat transfer medium forms between the heat exchanger and the jacketed working surface, said ducts having at a respective end spaced from the connections to the inlet and outlet, medium flow connection means to said annular space directly below said jacketed working surface.
Dependencies are inferred from the claim text.