| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide water supply equipment capable of feeding water with increased dissolved oxygen in water by mixing air by comparatively simple equipment. <P>SOLUTION: A water pipe 12 connected with a discharge side of a pump 10 is provided with a negative pressure section 12a in which the pressure of water flowing along the water pipe 12 is reduced to a pressure lower than the atmospheric pressure and which is protruded upward above a water transmission gradient H<SB>G</SB>. The section 12a is connected with one end of a branch pipe 20 freely opened to the atmospheric air. Preferably, an air inflow rate control section comprising, e.g., a control valve 22 for controlling the volume of air flowing into the water pipe through the branch pipe is installed in the branch pipe. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
