| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a urinal capable of inhibiting urolith from developing in a drain lateral branch pipe while maintaining water saving capacity. <P>SOLUTION: A urinal US performs a first washing mode in which urine stored in at least a trap part can be replaced with washing water, suspends water supply for a predetermined time, and then performs a second washing mode for supplying washing water Wf is performed by resuming water supply after drainage water Ur1 being at least a portion of drainage water including urine which is replaced with washing water supplied in the first washing mode flows to a downstream side of a connection part between a device drain water pipe 50 and a drain lateral branch pipe 51. <P>COPYRIGHT: (C)2012,JPO&INPIT |
