| 摘要 |
PROBLEM TO BE SOLVED: To automatically sterilize by providing a chemicals dissolving tank at a bypass provided at a bath water circulating and purifying route and supplying chemicals from a chemicals tank packing the chemicals generating chlorine to a chemicals dissolving tank through a chemical supply valve to automatically supply water including dissolved water. SOLUTION: The circulating and purifying route 2 circulating and purifying bathtub water provided the bathtub 1 is provided with a pump 10 circulating bath water, a heater 11 heating bath water and hollow fiber membrane 12 filtering bath water. Then, the chemicals dissolving tank 4 is arranged at a bypass path 3 provided between a part arranging the heater 11 and a part arranging the membrane 12. In this case, the chemicals tank 6 packing the chemicals 5 generating chlorine is positioned over the tank 4 and a chemicals supply valve 7 is inserted to a route communicating between the tank 6 and the tank 4. Then the valve 7 and opening/closing valves 13a and 13b are open- close-controlled to periodically supply chlorine for the route 2 to automatically sterilize bathtub water. |
