| 摘要 |
PROBLEM TO BE SOLVED: To provide a drainage device 1 which prevents overflow of foam of a detergent from the same, and prevents seal destruction in the same. SOLUTION: The drainage device 1 is formed of: a water trap main body 2 with a drain port 21; a seal water tank 3 arranged inside the water trap main body 2, for storing therein drainage; a deodorization cylinder 7 inserted into the seal water tank 3 across a water flowing interval; a drain channel 9 formed in a gap between the seal water tank 3 and the deodorization cylinder 7, and communicating with the drain port; a drain cylinder 4 inserted into the deodorization cylinder 7 across a water flowing interval; a water collecting channel 8 formed in a gap between the deodorization cylinder 7 and the drain cylinder 4, for collecting drainage flowing from an upper edge of the deodorization cylinder 7; and a water leading member 5 mounted on a bottom surface of the seal water tank 3, communicating with the drain cylinder 4, and also communicating with the drain channel 9. Herein the water leading member 5 has formed therein through holes 55 or notches 54 communicating with the water collecting channel 8. COPYRIGHT: (C)2008,JPO&INPIT
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