PROBLEM TO BE SOLVED: To provide a carbon dioxide gas dissolver which is capable of generating a high concentration carbonated spring using a small amount of carbon dioxide gas, and is excellent in dissolving efficiency of the carbon dioxide gas.SOLUTION: This carbon dioxide gas dissolver includes: a hot water introducing pipe 31 for introducing hot water a carbon dioxide gas introducing pipe 32 connected to the hot water introducing pipe 31 a dissolver body 33 connected on a downstream side from a connection position of the carbon dioxide gas introducing pipe 32 in the hot water introducing pipe 31 and a hot water lead-out pipe 36 for leading out the hot water in which the carbon dioxide gas is dissolved by the dissolver body 33. The dissolver body 33 has a plurality of connected dissolution units, and the dissolution unit includes: a dissolution processing chamber 34 which has an inflow hole IH formed on an upstream side and an outflow hole OH formed on a downstream side respectively so that the hot water may flow in together with the carbon dioxide gas from the inflow hole IH and then may flow out from the outflow hole OH and an outflow pipe 35 of a small diameter, whose one end is connected to the downstream side inside the dissolution processing chamber 34 so as to be communicated with the outflow hole OH, and the other end is projected to the upstream side inside the dissolution processing chamber 34.COPYRIGHT: (C)2013,JPO&INPIT【課題】小量の炭酸ガスを用いて高濃度の炭酸泉を生成することができる、炭酸ガスの溶解効率に優れた炭酸ガス溶解器を提供する。【解決手段】温水を導入するための温水導入管31と、温水導入管31に接続された炭酸ガス導入管32と、温水導入管31における炭酸ガス導入管32の接続位置よりも下流側に接続された溶解器本体33と、溶解器本体33によって炭酸ガスを溶解させた温水を導出するための温水導出管36とを備え、溶解器本体33は、連結された複数の溶解ユニットを有しており、溶解ユニットは、上流側に流入穴IHが、下流側に流出穴OHがそれぞれ形成され、流入穴IHから炭酸ガスと共に温水が流入した後、流出穴OHから流出する溶解処理室34と、流出穴OHに連通するように、一端が溶解処理室34内の下流側に接続され、他端が溶解処理室34内において上流側に張り出す小径の流出管35とを有している。【選択図】 図3
