To provide a method and an apparatus for generating fine bubbles continuously feeding water or hot water containing a given amount of fine bubbles to a bathtub, preventing lowering due to aging of the generation amount of fine bubbles.
In the apparatus for generating fine bubbles, water or hot water is fed to the bathtub; air is mixed into part of water or hot water to be fed to the bathtub and after pressurizing the water or hot water, fine bubbles are generated therein, and the water or hot water containing fine bubbles are fed to the bathtub. The apparatus is provided with a suction part sucking water or hot water; an air-liquid mixing part mixing air into the water or hot water sucked from the sucking part and pressurizing for dissolving air into the water or hot water; and a discharge part generating fine bubbles in the water or hot water with the air dissolved therein obtained in the air-liquid mixing part, and discharging the water or hot water containing the fine bubbles. The apparatus feeds the water or hot water containing the fine bubbles into water or hot water contained in the bathtub. The suction part is composed to suck part of water or hot water fed to the bathtub.
Toshio Morita
Yoshihei Nakamura
Yutaka Horii
Hisato Noda
Masayuki Sakai