| 摘要 |
PURPOSE:To economically heat a wash place by providing a rising sidewall, a drain port and a drain valve in the circumference of the wash place, in a bottom part and the drain port, respectively, and reserving hot water in the wash place at the time of closing the drain valve. CONSTITUTION:To a wash place 2, a sidewall 2a is provided in the circumference, a drain port 2c to provide a drain valve 2b is provided in the bottom part, and the hot water can be reserved onto the wash place 2 by a hot water feed from a hot water feed pipe 3 at the time of closing the drain valve 2b. When the drain valve 2b is opened, hot water 4 reserved on the wash place 2 is drained from the drain port 2c through a drain pipe 5. |
