| abstract |
An induction heater for heating a rotating godet in a synthetic fiber processing device, the heater having a tubular, radially laminated magnetic core clamped between two transversely laminated, circular end flanges of magnetic material having inset portions extending over the ends of the core and an alternating current excited winding filling the space between the flanges, the tubular core also being aligned with openings in the flanges permitting the passage of a shaft therethrough for supporting and rotating a cylindrical godet, which surrounds the lateral surface and one end of the heater by which hysteresis and eddy currents are induced in the godet, the core laminations preventing induced heating of the core, and the circular flanges preventing the magnetic flux drag between the core and the godet. |