FIELD: ventilation and air conditioning.
SUBSTANCE: invention relates to rotor (20) for axial fan (22) of large diameter for industrial purposes. Rotor according to invention comprises hub (24) and n blades (26), wherein each rotor blade has root part (28) for structural connection with hub and aerodynamic part (30), wherein rotor according to invention also comprises coaxial auxiliary axial impeller (32), which comprises n wings (34) passing in radial direction, and which, in axial projection, is essentially located in zone P limited by n radially inner ends of aerodynamic parts of rotor blades (26). Invention also relates to a rotor for axial fan (22) of large diameter for industrial purposes, containing such a rotor.
EFFECT: disclosed are a rotor and an axial fan containing an auxiliary axial impeller.
15 cl, 26 dwg
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