PURPOSE: To execute a circulating filtration of high efficiency by generating jet stream of only a water with one operation, to decrease the number of switches, etc., on a flange of the bathtub, to make the operation easily understandable to a bathing person, and also, to simplify the device in design.
CONSTITUTION: A bubble nozzle and a water feeding port are allowed to communicate with each other by a bath hot water circulating route, and also, a circulating pump for allowing bath hot water to circulate is arranged in the bath hot water circulating route. In a bypass route provided on the way of the bath hot water circulating route, a filter tank is arranged. An air suction port 5 and the bubbling nozzle are communicated with each other with an air supply tube. A bubbling operation switch for executing a filtration, while generating a jet stream involving on air, and a filtration operation switch 14 for executing a filtration, while generating the jet stream so as to involve no air are provided separately. An operating part 14a of the filtration operation switch 14 is provided integrally in the air suction port 5, and also, by operating this operation part 14a, opening and closing of the air suction port 5 and opening and closing of the filtration operation switch 14 are executed.
IKEUCHI JUNICHI
SUZUKI MASATO
