AIR-SCREEN CLEANING DEVICE FAN Russian patent published in 1994 - IPC

FIELD: agricultural engineering. SUBSTANCE: fan has pressure branch pipe 1, guide 4 is mounted between branch pipe panels 3, the edge the most removed from the axis of rotor 8 is made rectilinear. The edge closest to the rotor axis has curvilinear sections. The deviations from the nominal width of the guide measured at the points along its length from one side panel to the other one are proportional to maximum air flow rate deviations measured at similar points along the length of the guide with a rectilinear closest edge. EFFECT: improved efficiency. 2 dwg