| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a float type air diffusion device capable of being installed inexpensively in a short time, hardly damaged by the collision with floating matter and not causing the lowering of circulation efficiency. <P>SOLUTION: The float type air diffusion device is equipped with a sinker 12 installed on the bottom of the water, a float type air diffusing main body 13 capable of sustaining itself in an almost vertical state within water and the mooring chain 14 or the like for connecting the float type air diffusing main body 13 and the sinker 12. The float type air diffusing main body 13 is composed of the outer shell 16 having buoyancy and locked by the chain 14 or the like, a plurality of the air diffusion pipes 19A-19E housed in the outer shell 16 and the air diffusion nozzles 20A-20E respectively attached to the respective air diffusion pipes 19A-19E and allowed to pierce through the outer shell 16 so as to form many stages in an up and down direction to face to the outside. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
