| 摘要 |
PROBLEM TO BE SOLVED: To improve heat shielding property of a heat shield cylinder and to reduce the detection error of a pot bottom temperature caused by thermal influence from a burner, in the pot bottom temperature sensor for a cooking stove comprising a cylindrical thermal head 81 of which an upper end is closed by a heat collection plate 80 kept into contact with the pot bottom, provided with a heat sensitive element 82 on a lower face of the heat collection plate 80, and further provided with the heat shield cylinder 84 surrounding the thermal head. SOLUTION: The heat shield cylinder 84 has an inner/outer double structure comprising an inner cylinder 85 and an outer cylinder 86, a ventilation space 87 opened at is upper part is formed between the thermal head 81 and the inner cylinder 85, and the air from an opening part 86c of a lower end of the outer cylinder 86 is allowed to flow into the ventilation space 87 through an opening part 85c of a lower end of the inner cylinder 85. Further a cover plate 88 is mounted to close a space between the inner cylinder 85 and the outer cylinder 86 at a lower position with respect to an upper face of the heat collection plate 80, and a heat insulating air layer 89 is formed between the inner cylinder 85 and the outer cylinder 86. COPYRIGHT: (C)2006,JPO&NCIPI
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