PROBLEM TO BE SOLVED: To provide a gas dissolving device where gas is dissolved in liquid in a supersaturation state and the supersaturation state can be stably maintained and further which can be easily attached to a water server and the like.SOLUTION: A gas dissolving device generates hydrogen water by dissolving hydrogen in water and discharges from a taking out port. The gas dissolving device includes: a dissolution tank where generated hydrogen water is introduced, pressurized and stored； and pressure reduction transfer means where pressure fluctuation in a tubular path caused by discharge action of the hydrogen water from the taking out port in the tubular path connecting the dissolution tank to the taking out port is prevented and a laminar flow is formed.SELECTED DRAWING: Figure 1【課題】 気体を過飽和の状態で液体に溶解させ、かかる過飽和の状態を安定に維持でき、さらにウォーターサーバー等へ容易に取付けることができる気体溶解装置を提供することである。【解決手段】 水に水素を溶解させて水素水を生成し取出口から吐出させる気体溶解装置である。生成した水素水を導いて加圧し貯留する溶存槽と、溶存槽及び取出口を接続する管状路において取出口からの水素水の吐出動作による管状路内の圧力変動を防止し層流を形成させる降圧移送手段と、を含むことを特徴とする。【選択図】 図１
