PROBLEM TO BE SOLVED: To provide an oral cavity washer capable of sending out a washing liquid in which a gas is dissolved in a liquid at a high dissolving level to an oral cavity.SOLUTION: This application discloses an oral cavity washer including: a supply part to which a liquid and a gas are supplied a generation part for generating a solution in which the gas is dissolved in the liquid and a jet mechanism for generating a washing liquid by using the solution and jetting the washing liquid. The generation part includes: a dissolving part for generation the solution a circulation path including a starting end where the solution flowed out from the dissolving part flows in and a terminal end where the solution flowed in the starting end flows out and a guide path for guiding the solution toward the jet mechanism. The guide path is connected to the dissolving part. The circulation path guides the solution flowed in the starting end to the dissolving part.COPYRIGHT: (C)2014,JPO&INPIT【課題】高い溶解レベルで気体が液体中に溶解した洗浄液を口腔へ送り出すことができる口腔洗浄器を提供することを目的とする。【解決手段】本出願は、液体及び気体が供給される供給部と、前記液体に前記気体が溶解された溶解液を生成する生成部と、前記溶解液を用いて洗浄液を生成し、該洗浄液を噴射する噴射機構と、を備える口腔洗浄器を開示する。前記生成部は、前記溶解液を生成する溶解部と、該溶解部から流出した前記溶解液が流入する始端と該始端に流入した前記溶解液が流出する終端とを含む循環経路と、前記噴射機構へ向けて前記溶解液を案内する案内経路と、を含む。前記案内経路は、前記溶解部に接続される。前記循環経路は、前記始端に流入した前記溶解液を前記溶解部へ案内する。【選択図】図1