| 摘要 |
PROBLEM TO BE SOLVED: To provide a bath water cleaning apparatus which can improve filtration performance and prevent the reduction of a flow rate by arranging a filter means combining two filter materials different in filtration area. SOLUTION: In a filter 17, a first filter material 17a comprising a porous elastomer and a second filter material 17b which is located downstream from the first filter material 17a and comprises a fine mesh porous elastomer are laid to overlap each other in two layers. The filtration area of the second filter material 17b is smaller than that of the first filter material 17a. When the second filter material 17b is clogged, a flow rate circulating through the filter secures a prescribed flow rate for cleaning bath water. In this way, filtration performance can be improved, and the reduction of a flow rate can be prevented. COPYRIGHT: (C)2004,JPO
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