| 摘要 |
PROBLEM TO BE SOLVED: To improve thermal efficiency and reduce electric power consumption to attain power saving by providing an electromagnetic induction heat generating body on the inner wall of a wall part directly contacted with sealing water in a drain trap, and heating the heat generating body by high frequency induction with an induction heating coil arranged outside the wall part to directly heat the sealing water. SOLUTION: The drain trap 16 of the bowl bottom part of the stool main body 12 of a stool 10 made of earthenware holds sealing water 18 therein. The heat generating body 22 of a heating device 20 for heating the drain trap 16 is provided on the inner wall (inner face of a wall part 24) directly contacted with the sealing water 18 of the drain trap 16 extending over a fixed area. The induction heating coil 26 and a high frequency induction heating circuit 28 of the heating device 20 are respectively arranged outside the wall part 24 of the drain trap 16. High frequency current is generated in the induction heating coil 26 by the high frequency induction heating circuit 28, hence induction current is generated in the heat generating body 22 made of magnetic material having conductivity by electromagnetic induction action, and the heat generating body 22 is heated by the induction current to directly heat the sealing water 18.
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