| 主权项 |
1. A urinal connected to a horizontal branch pipe by a urinal discharge pipe, comprising:
a bowl portion for receiving a user's urine; a discharge trap portion for discharging to the downstream side flush water or urine flowing in from a discharge opening formed on the bottom portion of this bowl portion; a water supply means for supplying flush water to the bowl portion; and a control means for controlling the supply of flush water to the bowl portion; wherein the control means has: a main flush mode for flushing the bowl portion which has received the user's urine and discharging urine in the discharge trap; a first equipment flushing mode in which, after a main flush mode is executed, a part of the flush water flushes out the discharge horizontal branch pipe upstream of the connecting portion where the urinal discharge pipe is connected; a second equipment flush mode in which, after the first equipment flushing mode has been executed, and after a predetermined time has elapsed during which it is assumed that flush water which has flushed the side upstream of the connecting portion in the first equipment flushing mode will have flowed to downstream of the connecting portion, a part of the flush water flushes the upstream side of the connecting portion; wherein in at least one of either the first equipment flushing mode or the second equipment flush mode, the value of the discharge water volume or of the discharge instantaneous flow volume discharged to the downstream side from the discharge trap portion shall be a value equal to or greater than the value of the discharge water volume or of the discharge instantaneous flow volume discharged to the downstream side from the discharge trap portion in the main flush mode. |
