PROBLEM TO BE SOLVED: To miniaturize a body case and to suppress reduction of an air volume, in an air purification device for eliminating floating microorganism such as bacterium and virus.SOLUTION: A partitioning plate 25 partitioning a control portion 16 and an air channel 4 is disposed at a lower part of the control portion 16, the partitioning plate 25 is put in the air cannel 4, a suction port 20 of a casing 9 is a hole having a central axis in a horizontal direction, and has the elliptical shape having an upper horizontal edge 21 positioned at an upper portion and horizontally extended, a lower horizontal edge 22 positioned at a lower portion and horizontally extended, a one-side circular arc edge 23 having the circular arc shape and connecting a one-side end portion of the upper horizontal edge 21 and a one-side end portion of the lower horizontal edge 22, and the other-side circular arc edge 24 having the circular arc shape and connecting the other-side end portion of the upper horizontal edge 21 and the other-side end portion of the lower horizontal edge 22. The partitioning plate 25 is horizontally extended from an outer surface of a casing suction port face 26 including the suction port 20 of the casing 9, and arranged between the upper horizontal edge 21 and an upper end A of an impeller in a vertical direction.SELECTED DRAWING: Figure 6COPYRIGHT: (C)2017,JPO&INPIT【課題】細菌やウィルスなどの浮遊微生物を除去する空気浄化装置において本体ケースを小型化し、風量の低減を抑制を目的とする。【解決手段】制御部16の下方に制御部16と風路4とを仕切る仕切板25を備え、仕切板25が風路4内に入り込み、ケーシング9の吸込口20は、水平方向に中心軸を有する孔で、上部には水平方向に伸びた上部水平縁21と、下部には水平方向に伸びた下部水平縁22と、上部水平縁21の一方側端部と下部水平縁22の一方側端部とを繋ぐ円弧形状の一方側円弧縁23と、上部水平縁21の他方側端部と下部水平縁22の他方側端部とを繋ぐ円弧形状の他方側円弧縁24とを有する長円形で、仕切板25は、ケーシング9における吸込口20を備えたケーシング吸込口面26の外面から水平方向に延び、上下方向が上部水平縁21と羽根車の上端Aとの間に配置されたものである。【選択図】図6