| 摘要 |
<P>PROBLEM TO BE SOLVED: To always keep stored rainwater clean in quality and allow the use of the rainwater as daily-life drinking water, etc., in an emergency. <P>SOLUTION: An inflow pipe is disposed on the upper part of a tank body 1 having a convex part 3 on the bottom, and a hopper 8 is provided at a position under the inflow pipe while being protruded from the inner peripheral face of the tank body 1 to the inside at a predetermined angle. Rainwater trapped into the inflow pipe 4 is dropped into the center of the tank body 1 and stored in the tank body 1. The dropping momentum of the rainwater and the slope or curve of the convex part 3 causes the upward flow of water which is guided into the center of the tank body 1 by the hopper 8 to generate a reflux flow. <P>COPYRIGHT: (C)2013,JPO&INPIT |
