| 摘要 |
PROBLEM TO BE SOLVED: To provide an overflow device in which a drain flow rate of overflow is improved without being affected by a shape such as the shape of an overflow hole of a tub or depth of an overflowing water flow passage.SOLUTION: An overflow device comprises a tub 1 comprised of a box body in which a scupper 11 is opened on the bottom thereof, an overflowing water flow passage 2 through which overflowing water from the tub 1 is drained, a main pipe 6 connected to the scupper 11, and a branch pipe 7 which takes drain water from the overflowing water flow passage 2 into the main pipe 6. In the overflow device, a confluence chamber 8 is configured in a confluent portion of the main pipe 6 and the branch pipe 7. |
