Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
Agitation blade
 A stirring blade unit includes a perforated cylinder formed around the an internal stirring blade so as to be rotated together with the stirring shaft. The perforated cylinder has perforations which are approximately 30 to 50% of the area of the top and bottom surface of the perforated cylinder. The internal stirring blade unit uses a discharge type stirring blade unit used for gas-liquid mixing of a general fermentation tank. Thus, the gas-liquid flow discharged from the blade unit in the horizontal direction hits the perforated cylinder formed around the blade unit certainly. Due to this hitting of the gas-liquid flow against the perforated cylinder, the pressure of the flow is changed significantly to refine the gas bubbles so that the gas absorption property is improved. The stirring blade unit is suitable for gas-liquid mixing necessary for such as, fermentation, aeration, and reaction (hydrogenation and oxidation) tanks. The gas-liquid mixing blade unit can absorbs gas efficiently and thus, reduces both the manufacturing cost and installation space. 
Ajinomoto Co., Inc.
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B01F B01F B01F B01F
additional inventional inventional additional
Hisao Naohiro Yoshitaka Jun
Ito Kadota Teratani Ikeda