JP2009226230A5 - - Google Patents

Claims (10)

A microbubble generator for generating microbubbles ,
A plurality of first holes having a diameter of 1 μm or less that form the microbubbles by passing compressed gas;
A first porous filter having a hollow portion for introducing the compressed gas;
A second porous filter disposed outside the first porous filter and having a plurality of second holes having a diameter of more than 1 μm;
A gas introduction part formed on one end part side of the first porous filter for introducing the compressed gas into one end part of the hollow part of the first porous filter; A closing portion for closing the other end of the hollow portion;
A casing part disposed outside the second porous filter, a liquid introduction part for introducing liquid into the second porous filter from a position opposite to the gas introduction part;
A discharge part that discharges the liquid containing the microbubbles from a position opposite to the liquid introduction part;
The casing part having:
A microbubble generator characterized by comprising: The microbubble generator according to claim 1, wherein the first porous filter is a cylindrical member. 3. The microbubble generating device according to claim 2, wherein the second porous filter is a cylindrical member disposed in close contact with an outer peripheral surface of the first porous filter. The minute casing according to claim 3, wherein the casing part is a cylindrical member, and an inner peripheral surface of the casing part is arranged in close contact with an outer peripheral surface of the second porous filter. Bubble generator. The said gas introduction part and the said liquid introduction part are arrange | positioned on the same center axis | shaft, and the said closing part is arrange | positioned between the said gas introduction part and the said liquid introduction part. microbubble generating apparatus of. 6. The microscopic structure according to claim 1, wherein the first porous filter is a polymer film having a plurality of fibrils, and the first pores are provided between the fibrils. Bubble generator. The microbubble generator according to claim 6, wherein the second porous filter is a non-woven fabric. The microbubble generator according to claim 7, wherein a plurality of through holes communicating with the second porous filter are formed in the casing part. The diameter of the plurality of first holes of the first porous filter is 0.01 μm or more and 1 μm or less,
2. The microbubble generating device according to claim 1, wherein a diameter of the plurality of second holes of the second porous filter is more than 1 μm and not more than 100 μm. A microbubble generating method for generating microbubbles ,
By introducing compressed gas into the gas introduction part located on one end side of the hollow part of the first porous filter, and closing the other end part of the hollow part of the first porous filter with a closing part. And forming the microbubbles by passing the compressed gas through a plurality of first holes having a diameter of 1 μm or less of the first porous filter,
Liquid introduction into a casing portion arranged outside the second porous filter with respect to the second porous filter arranged outside the first porous filter and having a plurality of second holes having a diameter exceeding 1 μm. A method of generating microbubbles , comprising introducing a liquid from a section and discharging the liquid containing the microbubbles from a discharge section at a position opposite to the liquid introduction section.