| 摘要 |
Rotatable heating apparatus including a support portion, a shell portion, a heating portion, a power supply portion and a control portion; the support portion including a frame section, the frame section including spaced upstanding sections, the upstanding sections including shaft supports; the shell portion including a substantially cylindrical outer section, a smaller substantially cylindrical inner section disposed within the outer section adjacent thereto and spaced therefrom, substantially parallel first and second end sections adjacent the ends of the cylindrical inner section, first and second annular sections enclosing the spacing between the ends of the inner and outer cylindrical sections, a shaft member disposed along the axis of the shell portion; the heating portion including a plurality of spaced electrical heating elements disposed between the inner and outer cylindrical sections, the heating elements extending from the first annular section to a point adjacent the second annular section, insulating support members disposed along the lengths of the heating elements, the power supply portion including an electrical collector; electrical connectors extending from each of the heating elements adjacent the first annular section to the collector, a rotatable drive operatively connected to the shaft member; the control portion including a thermostat for the heating elements and a speed control for the drive.
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