Method device and arrangement for heating an object by an induction
AssigneeEffmag Oy
InventorPekka Suominen
Life of this patent
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Abstract
A device for heating an object by an electromagnetic induction comprises at least one rotor, and the rotor comprises at least one permanent magnet. The device also comprises a stator for providing varying magnetic field arranged to interact with at least one magnet of the rotor and causing said rotor to rotate around the axis. The magnets of said rotor is arranged to provide varying magnetic field and eddy currents within the object when said rotor is rotated so that said object is heated by the electromagnetic induction generated by said varying magnetic field and eddy currents.
Claims18
A device for heating an object by an electromagnetic induction, wherein the device comprises:
- at least one rotor arranged to heat the object, said at least one rotor comprising at least one permanent magnet, and
- a stator for providing varying magnetic field arranged to interact with at least one permanent magnet of said at least one rotor and causing said at least one rotor to rotate, wherein at least one permanent magnet of said at least one rotor is arranged to provide varying magnetic field and eddy currents within the object when said at least one rotor is rotated so that said object is heated by the electromagnetic induction generated by said varying magnetic field and eddy currents, and wherein the device comprises at least one additional rotor with at least one magnet, wherein at least one magnet of said additional rotor is used for heating at least one object by the electromagnetic induction, and wherein the device either comprises:
- a) driving means for providing rotating force for rotating said additional rotor, the rotating force being derived from the rotor rotated by the varying magnetic field induced by the stator, or
- b) an additional stator used for rotating said additional rotor.
A rotor for heating an object by an electromagnetic induction, the rotor comprising at least one permanent magnet arranged to provide varying magnetic field and eddy currents within the object to be heated when said rotor is rotated in a proximity of the object, so that said object is heated by the electromagnetic induction generated by said varying magnetic field and eddy currents, wherein at least one permanent magnet of the rotor is arranged to interact with a varying magnetic field provided by a stator so that to cause said rotor to rotate, and wherein at least one magnet of said rotor is arranged to provide varying magnetic field and eddy currents within the object when said rotor is rotated by the varying magnetic field provided by said stator so that said object is heated by the electromagnetic induction generated by said varying magnetic field and eddy currents, and wherein the rotor is rotated by a motor either directly or via driving means transferring the rotating force from the motor.
An arrangement for heating an object by an electromagnetic induction, the arrangement comprising:
- a device for heating an object by an electromagnetic induction, and supporting means for supporting said object to be heated in a proximity of the device,
- wherein the device comprises:
- at least one rotor arranged to heat the object, said at least one rotor comprising at least one permanent magnet, and
- a stator for providing varying magnetic field arranged to interact with at least one permanent magnet of said at least one rotor and causing said at least one rotor to rotate,
- wherein at least one permanent magnet of said at least one rotor is arranged to provide varying magnetic field and eddy currents within the object when said at least one rotor is rotated so that said object is heated by the electromagnetic induction generated by said varying magnetic field and eddy currents, and
- wherein the supporting means is arranged to rotate the object to be heated around the axis of the object and/or moving the object to be heated essentially in the direction of the axis of the object.
Dependencies are inferred from the claim text.