| 摘要 |
PURPOSE:To surely remove suspended matter such as body grime without using a filter by providing a drain valve and a connection pipe connected to a bathtub through a suction guide having an upper water (water of the upper part in the bathtub) suction port which can be freely regulated in the vertical direction. CONSTITUTION:When water is purified, the drain valve 12 is opened, hence a water solenoid valve 14 is simultaneously opened, and the hot water heated by a water boiler 16 is introduced into a bathtub 9 through a hopper 15 and a bath heater 2. When the water level rises to the upper end of the upper water suction port 10a, the suspended matter 6 overflows into the upper water suction port 10 along with upper water, passes through the connecting pipe 11 and the drain valve 12, and is discharged to the outdoors from a water discharge port 13. After the water is discharged for specified hours, the water solenoid valve 14 is closed, automatic hot water supply is stopped, the drain valve 12 is simultaneously closed, and water discharge is stopped.
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