PROBLEM TO BE SOLVED: To easily obtain fine mist having a particle size smaller than splash mist.SOLUTION: A fine mist generating device 4 includes: a rotating body 34 having a water raising section 50 for sucking up water from a bottom by rotation, and a water scattering section 51 projecting outward in the radial direction from an upper end of the water raising section 50 a collision plate 35 disposed in opposition to the water scattering section 51 at an outer portion in the radial direction of the rotating body 34 at an interval and a water receiving section 38 receiving the water of a prescribed flow rate flowing down from a water discharge side 45a of a filling port 45, and guiding the water to a lower end 50a side of the water raising section 50. The fine mist generated when the water scattering from the water scattering section 51 collides with the collision plate 35 is released to the outside through a fine mist releasing port 37 formed between the collision plate 35 and the water receiving section 38.COPYRIGHT: (C)2010,JPO&INPIT【課題】スプラッシュミストよりも粒子径が小さい微細ミストを容易に得ること。【解決手段】微細ミスト発生装置4は、回転により水を下から上に吸い上げる水上昇部50とこの水上昇部50の上端から径方向外方に突設された水飛散部51とを有する回転体34と、回転体34の径方向外方に水飛散部51と間隔を隔てて対向配置される衝突板35と、注水口45の吐水側45aから流下する所定流量の水を受けて水上昇部50の下端50a側へ導く水受け部38とを備えると共に、水飛散部51から飛散した水が衝突板35に衝突することで発生する微細ミストを、衝突板35と水受け部38との間に設けた微細ミスト放出口37を介して外部に放出する構成とした。【選択図】図1