The present invention short mixing flow path of the gas dissolution, and a gas dissolver for generating capability of the A simplified structure carbonated water is not reduced, and to provide a carbonated water generating device using the same. A gas dissolver 2, an internal air-tight form the surface of the gas-liquid mixing region of the housing 3, an inlet 21 which is formed substantially at the center of the gas-liquid mixing region, across the gas-liquid mixing region and an outlet 22 formed in fluid communication with gas-liquid mixed area to the inlet and the opposite position, consists of a gas-liquid mixing zone consists of introduced liquid to flow is diffused in the planar direction path 31b from the inlet diffusion compartment 31, forming the concentrate compartment 32 consisting of focused cell stream passage 32b toward the outlet in communication from the diffusion edge of the diffusion compartment to a stacked state. Carbonated water generating device and the gas dissolver, the inlet pipe which is connected to the supply inlet by merging with the water and carbon dioxide in the gas-liquid mixing zone of the housing, the carbonated water produced by the gas dissolver to the outside and outlet pipe which is connected to the outlet port for supplying to consist.BACKGROUND 3【課題】気体溶解の混合流路長が短く、かつ簡略な構造であって炭酸水の生成能力が低下しない気体溶解器、及びこれを用いた炭酸水生成装置を提供する。【解決手段】気体溶解器2は、筐体3の内部に気密形成した面状の気液混合領域と、気液混合領域の略中央に形成した流入口21と、気液混合領域を挟んで流入口と対向した位置に気液混合領域と連通させて形成した流出口22と、から成り、気液混合領域は流入口から導入した気液を面方向に拡散させる流路31bから成る拡散区画31と、拡散区画の拡散端部から連通して流出口へ向けて集中させる流路32bから成る集中区画32と、を積層状態で形成している。炭酸水生成装置は上記気体溶解器と、筐体の気液混合域に水と炭酸ガスとを合流させて供給する流入口に連結した流入管と、気体溶解器で生成した炭酸水を外部へ供給する流出口に連結した流出管と、から構成する。【選択図】図3
