Patent ID: 7644910
Filing Date: 2010-01-12
Classification: B01F

Abstract:
1. A method of generating micro gas bubbles in a liquid, the method comprising the steps of preparing a tube having a closed end at one end and an open end at the other end and a rotating bladed wheel installed in said tube and rotating coaxially or substantially coaxially with said tube, said rotating bladed wheel having one or more blades, a normal line to each of faces of said blades falling within ±15° from a location parallel to a plane extending perpendicularly to an axis of a rotating shaft of said rotating bladed wheel at any position on the blade face, immersing at least the open end of said tube and said rotating bladed wheel in the liquid, and rotating said rotating bladed wheel at 5.8 m/sec or higher as a speed of an outermost peripheral portion of said blade in the rotating direction when said rotating bladed wheel is rotated.