Akita University

Akimoku Iron Works Co., Ltd.

Wataru Sugiyama

Akira Nakagawa

A fine bubble generator which is an ultrafine bubble generator includes a side wall whose inner face is cylindrical, and closing walls closing both ends of the side wall, respectively, with a gas-liquid discharge port in one of the closing walls, wherein a fluid inlet port is provided closer to the gas-liquid discharge port than is a midpoint between both closing walls, and the fluid inlet port penetrates the side wall in a tangential direction of the inner face of the side wall, wherein a spiral groove is formed in the inner face of side wall, and wherein the spiral groove has an angle of inclination of 1&#xb0; to 10&#xb0;.

Growing community of inventors

Akita, Japan

Wataru Sugiyama