| 摘要 |
PURPOSE:To prevent noise from occurring, improve the wear resistance in oil and water, and improve the heat resistance and anti-compressibility by firing a roller made by compression-molding teflon PFA resin with glass fibers added to it. CONSTITUTION:Microwaves are supplied by a magnetron oscillator 10 through a waveguide 9. Hot air is supplied in such a manner that air heated in a heater chamber 12 is drawn from its center and delivered out of its periphery by a turbo fan 13, which is then supplied through punching ventilation holes 11 in the rear of the cooking chamber 7. A sheathed heater 14 is disposed around the turbo fan 13 in the heater chamber 12, while a motor 15 drives the fan 13. A metallic turn-table 2 is supported by rollers 1, and a magnet 3 is fixedly attached thereto. The metallic turn-table 2 is rotated by the mutual attraction with a magnet 6 fixedly attached to the table 5. The anti-compressible rollers 1 are made of glass fibers 50% and teflon PFA resin 50%, and is firing-treated for 30 minutes at 300 deg.C after being press-molded. Owing to said rollers, operating noise can be eliminated.
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