| 摘要 |
PROBLEM TO BE SOLVED: To save space, eliminate moving parts and remove filth and dirt on a bath water surface by making always follow the bath water surface. SOLUTION: By providing a pump 4 circulating bath water, a filtering means 5 provided in the route, and an inlet 3 and an outlet 6 of the pump 4, and forming the inlet 3 of an expansible and continuous tubular body, the space can be reduced, the risk of a moving part getting stuck by dirt or the like can be prevented, and the device can follow the water level and can suck and remove dirt floating on a bath water surface.
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