PROBLEM TO BE SOLVED: To provide a disk type fine bubble production method and apparatus that are able to efficiently produce fine bubbles with less consumption energy.;SOLUTION: In a disk 10, a plurality of hollow conduits 20 are mounted on one side of a base plate 11 by their being radially arranged in a donut-shaped area around a center O, fine through-holes 16 reaching respective hollow parts of the hollow conduits 20 are punched in its opposite side, and an air-tight chamber 15 for covering the opposite side air-tightly is provided. This disk is immersed in a liquid phase Pb. One end of a hollow rotation shaft pipe 30 is inserted into the center O of the disk 10 in order to allow communication with the air-tight chamber 15, and the other end thereof is allowed to communicate with a gas phase Pa. Liquid Q is caused to flow into each hollow conduit 20 from the liquid phase Pb by rotating the disk 10 around a hollow rotation shaft pipe 30. In addition, gas G is sucked into each hollow conduit 20, via the air-tight chamber 15 and the fine through-holes 16, from the gas phase Pa and the sucked gas is emitted from the outer periphery of the disk 10 while finely crushed by increasing the passage of the exit of each hollow conduit 20.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT
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