PROBLEM TO BE SOLVED: To provide an air cleaner which cleans air by contacting the air containing fine particles and water for a long time so as to mix them, and making the water absorb the fine particles in the air.SOLUTION: An air cleaner includes: a water tank main body having a space on an upper side a cylindrical cleaning duct which is arranged on the upper side of the water tank main body and has an air suction part on an upper end part an exhaust duct which is arranged on the upper side of the water tank main body and discharges the air sucked from the air suction part to an atmosphere an injection nozzle which is connected to the water tank main body through a pump and a circulation passage connected to the pump, and injects water into the cleaning duct. A diffusion member for diffusing at least a part of the water injected from the injection nozzle in the cleaning duct is arranged beneath the injection nozzle.SELECTED DRAWING: Figure 1【課題】 微粒子を含んだ空気と水を混合するように長時間接触させ、空気中の微粒子を水に吸着させ、空気を浄化する空気浄化装置を得ること。【解決手段】上部に空間を有する水槽本体と、該水槽本体の上部に設けられていると共に、上端部に空気吸入部を備える筒状の浄化ダクトと、前記水槽本体の上部に設けられ、前記空気吸入部から吸入された空気を大気へ排出する排出ダクトと、前記水槽本体にポンプ及び該ポンプに接続する循環路を介して接続され、前記浄化ダクト内に水を噴射する噴射ノズルを備える空気浄化装置であって、前記噴射ノズルの下方に、噴射ノズルから噴射された水の少なくとも一部を浄化ダクト内に拡散させる拡散部材を備える。【選択図】 図1
