Sucking the circulating water from the sucking opening of bathtub water wraparound

摘要

PROBLEM TO BE SOLVED: To prevent salt in a salt dissolving tank from reversely flowing to the upstream side. ;SOLUTION: A circulating water passage 1 is branched into a first branch passage 16 having an electrolytic cell 9 and a second branch passage 17 having a salt dissolving tank 19 and the end part on the downstream side of the second branch pipe 17 is connected to an electrolytic cell 6 and the first branch passage 16 is allowed to communicate with the circulating water passage 1 on the downstream side thereof. A valve 18 opened when a saline soln. is supplied to the electrolytic tank 6 from the salt dissolving tank 19 and closed when chlorine water formed by electrolyzing the saline soln. supplied from the salt dissolving tank 19 in the electrolytic cell 6 is emitted from an emitting port is provided to the second branch passage 17 on the upstream side of the salt dissolving tank 19. A check valve 25 enabling the inflow of water from the upstream side through the opened valve 18 and preventing water to reversely flowing to the upstream side from the salt dissolving tank 19 through the opened valve 18 when the on-off operation of a circulating pump 2 is repeated little by little in such a state that the valve 18 is opened to supply a saline soln. to the electrolytic cell 6 from the salt dissolving tank 19 is provided.;COPYRIGHT: (C)2000,JPO