公开(公告)号：US20210138410A1

公开(公告)日：2021-05-13

申请号：US16623175

申请日：2017-08-02

Applicant: SIGMA-TECHNOLOGY INC.

Inventor： Yoshiaki TACHIBANA ,  Kousuke TACHIBANA ,  Souzou SASAJIMA ,  Kyoko HONMA

IPC: B01F5/00 ,  B01F3/04 ,  C02F1/24

Abstract: Provided are: a microbubble generation device utilizing a swirling flow generated by injecting of a pressurized liquid; a microbubble generation method capable of generating a large amount of bubbles; and a shower apparatus and an oil-water separation apparatus having said microbubble generation device. This microbubble generation device comprises: a cylindrical or conical cylinder with a gas-liquid swirling chamber therein; a gas-liquid discharge inlet provided on one end of the cylindrical or conical cylinder; and a liquid supply cylinder and a gas supply cylinder for introducing a liquid and a gas into the gas-liquid swirling chamber. For the gas-liquid discharge outlet, a plurality of small cylindrical through-holes or a plurality of small recessed parts with a circular cross-section and at least a semicircular circumferential length, are respectively provided in the wall of a closed end at one end of the cylindrical or conical cylinder or on the circumferential surface of the inner wall of an open end at one end thereof.