METHOD AND DEVICE FOR PRODUCING FINE AIR BUBBLE-CONTAINING LIQUID, AND FINE AIR BUBBLE PRODUCER ASSEMBLED IN THE DEVICE

摘要

A fine air bubble producer (20) has an outer tube (201), a partition wall (202), and an inner tube (203) extending to the downstream side from the partition wall (202). Liquid permeation holes (202a) are formed in the central section of the partition wall (202), and a circumferential flange (203a) is formed at the downstream end of the inner tube (203). A disk (204) is provided adjacent to the rear end edge of the inner tube (203), and a restriction path (17) is formed by the disk (204) and the circumferential flange (203a). A recess (206) is formed in the circumferential flange (203a) constructing one wall surface of the restriction path (17).