| 摘要 |
PROBLEM TO BE SOLVED: To perform an air discharging operation in a reverse circulation just before performing a hot water cleaning, cleaning of a circulating pipeline with hot water, turn the hot water colder without making any fire burn at a human body and enable a safe discharging of water after cleaning operation. SOLUTION: A pipeline cleaning device in a bath water circulating device comprises a heater 1, a filter 2, a circulating pump P, a circulating pipeline 5 for circulating bath water from a bathtub 11 and returning the bath water back to the bathtub 11 under an operation of the circulating pump P, a connecting pipeline 6 and a sub-connecting pipe passage 7. Bath water within the circulating pipeline 5 can be circulated reversely through the sub-connecting pipeline 7 just before cleaning the circulating pipeline. When the circulating pipeline is cleaned, the water can be circulated forwardly through the connecting pipeline 6 while keeping its temperature high under an operation of the heater 1. When the water is drained, the bath water in the bathtub 11 and hot water cleaned within the circulating pipeline 5 are mixed to each other and the mixed water is controlled in such a way that it may be discharged outside the bathtub 11. |
