| 摘要 |
PROBLEM TO BE SOLVED: To improve the cooling efficiency while ensuring the efficiency of a heating coil by providing the heating coil generating a high frequency magnetic field in a lower part of a top plate and a cooling air passage of which clearance is sequentially reduced from the windward side toward the leeward side between a top face of the heating coil and the top plate. SOLUTION: A heating coil 5 generating a high frequency magnetic field is provided in a lower part of a top plate 1 and is supported by a coil support leg part 9 rising from a heating coil fixing plate 7. Moreover, a cooling air passage 11 is provided between a top face of the heating coil 5 and the top plate 1 so that cooling air flows from the windward side fa toward the leeward side fb by a cooking fan in the cooling air passage 11. In this case, a coil support leg 9 on the windward side fa is shorter than a coil support leg 9 on the leeward side fb in the cooling air passage 11. Consequently, the heating coil 5 is inclined by an angle ofθdeg. for shaft core X so that the cooling air passage 11 of which clearance is sequentially reduced from the windward side fa toward the leeward side fb is formed. |
