AIR PURIFICATION FILTER Russian patent published in 1995 - IPC

FIELD: for fine sanitary air purification. SUBSTANCE: Venturi tube is made ring-shaped in the form of located one over another plates 9 and 10, curvature of which follows contour of curvature of converging tube 14, nozzle neck 12, diffuser 13 and is placed in tray 2 in parallel to liquid level. In the case upper plate is made movable in respect to lower one and lower plate joins inlet branch pipe 16 and has ring-type collector 15 in area of nozzle neck 12 to feed liquid from tray 2. Plates 9 and 10 in area of nozzle neck 12 have holes for liquid feeding and drops catcher is made as two located on horizontal grating granular sorbent layers, that have decreasing size of fractions along air passage and are partitioned by nets 7 and 8. Collector has valve to adjust amount of sucked in liquid. Slime separating net is coaxially mounted on tray. EFFECT: improved air purification. 3 cl, 2 dwg