| 摘要 |
PROBLEM TO BE SOLVED: To provide a roof rainwater utilization system, capable of easily concentrating rainwater by raising the level of rainfall even in a horizontal plane without inclination which has a relatively small rainfall area. SOLUTION: In the roof rainwater utilization system, at least two rainwater inflow ports 2 and 2' are provided on a roof 1 at the same level, and the level of water flowing to one inflow port 2 is raised by a weir 3, whereby rainwater is collected 5 to a bottomed inflow pipe 4 inserted to the other inflow port 2, 2'. The collected water 5 is pumped to a rainwater tank on the roof by a suction pump through a minor diameter pumping pipe 7. COPYRIGHT: (C)2010,JPO&INPIT |
