| 摘要 |
This invention provides a fine bubble generating apparatus which can effi ciently generate fine bubbles on a nano level. This apparatus comprises a cy lindrical member (40) having a cylindrical inner peripheral face, a first en d wall member (42) set so as to close one end of the cylindrical member, and a second end wall member (44) set so as to close the other end of the cylin drical member. The cylindrical member (40), the first end wall member (42), and the second end wall member (44) define a fluid swirling chamber (46). A fluid introduction hole (48) for supplying a gas-liquid mixed fluid into the tangential direction of the peripheral face of the fluid swirling chamber ( 46) is provided at a position close to the second end wall member (44) in th e cylindrical member. A fluid delivery hole (50) passed through a central ax ial line of the inner peripheral face of the fluid swirling chamber is furth er provided in the second end wall member. The gas-liquid mixed fluid is int roduced into the fluid swirling chamber at a position close to the second en d wall member, and most of the fluid is directed toward the first end wall m ember while swirling along the inner peripheral face of the fluid swirling c hamber, is reversed and directed toward the second end wall member, and is d ischarged through a fluid delivery hole.
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