Cooled induction heating coil
AssigneesMetso Automation Oy, EFD Induction SA
InventorsLeif Markegård, Lars Andersson, Risto Saynavajarvi, Pekka Hoyssa
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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.
Claims14
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, characterised in that 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.
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, characterised in that the induction heating coil is cooled by a cooling medium which is circulated in a tube which is wound in an intermeshed fashion with the windings of the litz cable.
Dependencies are inferred from the claim text.