| 摘要 |
The invention relates to an equipment for storing rainwater falling on a roof or a rooftop of a house or used water from a bathtub. Three water tanks (11 to 13) are stacked one on another in a position below rain gutters (14). The rain gutters and a first water tank (11) are connected to each other by a first supply channel (21), and a second supply channel (22) is connected to its one end to the lower surface of the first water tank (11) and is provided at the other end thereof with a supply valve (33). A third supply channel (23) provided with a check valve (43) is connected at its one end to lower surfaces of the second and third water tanks (12, 13), respectively, and is connected at the other end thereof to the second supply channel. When rainwater stored in the first and second water tanks reaches predetermined water levels, respectively, amounts of rainwater above the predetermined water levels are conducted to the second and third water tanks, respectively, by an overflow channel (41). Rain water is collected in order in the tanks with the first water tank (11) first, and rainwater in the tanks is supplied in order to destinations being supplied starting with the first water tank (11). The equipment can be installed in a relatively small space and relatively readily increase or decrease its water storage capacity by increasing or decreasing the number of the water tanks, and can supply collected rainwater to destinations, where water is needed, as water for miscellaneous use by the utilization of potential energy of rainwater in the water tanks without providing a pump. <IMAGE> |
