| 摘要 |
<p>PROBLEM TO BE SOLVED: To stabilize rotation and to enhance cleaning efficiency by increasing rotatory power. SOLUTION: The air charger equipped with a rotary drive means 1, a hollow rotary shaft 2 arranged in water W to be rotated by the rotary drive means 1 and the capsule 4 provided to the lower end of the rotary shaft 2 and having a large number of air discharge small holes 3 bored therein. The capsule 4 having a diameter almost same to the outer diameter of the rotary shaft 2 is provided to the lower end of the rotary shaft 2.</p> |
