| 摘要 |
PURPOSE:To obtain the fine bubble generating and diffusing device which increases the transfer efficiency of gas into liquid by providing hollow members consisting of a porous material into a reaction chamber and connecting the hollow parts to a compressed gas generating means. CONSTITUTION:Compressed gas flows first from a ventilation chamber 6 into an air accumulation chamber 1 when the compressed air is supplied to the ventilation chamber 6 while the air accumulation chamber 1 is kept rotated. This air is released in the form of bubbles from the surfaces of the hollow porous fibers 8 into culture soln. in a culture tank 2. Since the air accumulation chamber 1 is under rotation at this time, the surfaces of the hollow porous fibers 8 move relatively with the culture soln. The bubbles coming onto the surfaces of the hollow porous fibers 8 are forcibly separated by the centrifugal force, etc., of this time and are released as the small bubbles into the culture soln. The min. diameter of the bubbles released into the soln. from the air diffuser can be made into about several +mum unit and the transfer efficiency of the gas into the liquid is increased.
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