Cooled induction heating coil

Details Cooled induction heating coil Cooled induction heating coil

2005-05-31

2005-05-31

Leung, Philip H. (Department: 3742)

Electric heating

Inductive heating

With heat exchange

C219S670000, C219S677000, C336S057000, C100S092000, C100S328000

Reexamination Certificate

active

06900420

ABSTRACT:
The present invention relates to an induction heating coil comprising a litz cable which is wound into a spiral to form a bobbin, and means for cooling said cable indirectly. The litz cable is arranged to be cooled by means of an indirect cooling system that comprises a tube which is wound in an intermeshed fashion with the windings of the litz cable. The present invention relates also to a method on a paper or board machine or on a paper finishing machine, in which method at least one induction heating coil comprising a wound litz cable is used for heating a component, and said coil is cooled indirectly by a cooling medium.

REFERENCES:
patent: 3946349 (1976-03-01), Haldeman, III
patent: 4317979 (1982-03-01), Frank et al.
patent: 5003145 (1991-03-01), Nolle et al.
patent: 5101086 (1992-03-01), Dion et al.
patent: 5313037 (1994-05-01), Hansen et al.
patent: 5461215 (1995-10-01), Haldeman

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