| 摘要 |
PROBLEM TO BE SOLVED: To improve heat efficiency by restricting the height of a trivet claw to a value corresponding to the size of a trivet ring. SOLUTION: The height of the trivet claw 16 is set so that a value of H/S becomes 0.0003 or less when the area surrounded by the outer periphery of the trivet ring 15 is set to S mm<SP>2</SP>and the height up to a placing surface for placing a cooking vessel of the trivet claw 16 from an outer peripheral end upper surface of the trivet ring 15 is set to H mm. Thus, even in a trivet of any size, a speed of combustion exhaust gas flowing outside from a cooking vessel bottom surface becomes uniformly fast, and the combustion gas can be passed at a high seed in a turbulent flow state by the cooking vessel bottom surface, and the heat efficiency is improved by preventing diffusion of heat. COPYRIGHT: (C)2006,JPO&NCIPI
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