MICROWAVE HEATING DEVICE

PROBLEM TO BE SOLVED: To provide high heating efficiency by accommodating heated material in a small space formed by a support base made of metal so as to support a rotating pan, and a metallic net body placed on the rotating pan and provided with right-angled parallel lines, and irradiating secondary radiation from the right-angled parallel lines. SOLUTION: A heated material is accommodated in a small space 12 surrounded by a support base and a net-shape body 5. Microwave generated by a magnetron 8 is supplied to a heating chamber 1 from a feed port 7 through a wave guide 9. Electromagnetic coupling is generated to the net body 5 near the feed port 7, and even a small quantity of heated material is heated with high efficiency by the concentration of microwave. In the case of a peripheral member of the net body 5 being opposite to the feed port 7, microwave radiated to upper space of the heating chamber 1 without heated material is irregularly reflected and is electromagnetically coupled to right-angled parallel lines 17, 18, 19 so as to be radiated secondarily and directly to the heated material. The microwave radiated toward the small space 12 with the heated material accommodated is absorbed by the heated material without irregular reflection.