Axial fan for conveying cooling air for cooling device of motor vehicle, comprises air blades with blade tips, that rotate in frame ring under formation of column between blade tip and frame ring

摘要

The axial fan (1) comprises air blades (3) with blade tips (3c), that rotate in a frame ring (5) under formation of a gap (6) between the blade tip and the frame ring. The air is supplied in the area of the column. The frame has openings (7), over which the air is supplied, particularly injected.