PROBLEM TO BE SOLVED: To provide a high efficiency gas dissolving apparatus which is excellent in productivity capable of generating a large amount of fine air bubbles.SOLUTION: A gas dissolving apparatus consists of: a tank (1) a pump (13) which feeds liquid a conduit (11) which connects a pump discharge port (16) with the tank (1) and an ejector (31) which ejects fluid from the conduit (11) in the tank (1), in which gas to be dissolved in the liquid is fed into a suction port (15) of the pump (13) or the conduit (11) to be made into gas-liquid mixed fluid, and the gas-liquid mixed fluid is ejected from the ejector (31) to a gas phase area in the tank (1).SELECTED DRAWING: Figure 1COPYRIGHT: (C)2019,JPO&INPIT【課題】微細な気泡を多量に発生させることができる生産性に優れた高効率気体溶解装置を提供する。【解決手段】タンク(1)と、液体を送液するポンプ(13)と、ポンプ吐出口(16)とタンク(1)とを連結する導管(11)と、導管(11)からの流体をタンク(1)内で噴出する噴出器と(31)からなる気体溶解装置であって、前記液体に溶解すべき気体を、ポンプ(13)の吸込口(15)又は導管(11)内に投入して気液混合流体とし、気液混合流体を噴出器(31)からタンク(1)内の気相領域に噴出させた気体溶解装置。【選択図】図1
