| 摘要 |
PROBLEM TO BE SOLVED: To improve efficiency of an equipment type microwave oven. SOLUTION: The microwave oven has a heating chamber 1 of a lengthwise and breadthwise symmetrical shape fitted with a vertical part 3c at the center of its top face and a waveguide 3 reaching a horizontal part 3a where a magnetron is mounted through a 45°bent part, and a stirrer wing 4 is made rotated on a center axis of the heating chamber. With this, an electric field of lengthwise and breadthwise symmetry is obtained in the heating chamber 1, and the waveguide 3 has only a 45°deflection at maximum in a direction of travel, endowed with high-pass characteristics, so that there is an effect of a high efficiency obtained if only an appropriate operating point is set. COPYRIGHT: (C)2005,JPO&NCIPI
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