AXIAL FAN WITH LOW NOISE LEVEL

摘要

FIELD: projection of axial fans for common use in national economy. SUBSTANCE: axial fan includes electric motor with outer rotor supporting profiled sheet vanes. Electric motor is mounted on protective grid. Optimal geometrical parameters of vanes received by calculation and by experiments are given. EFFECT: noiseless effective operation of fan due to combination of selected blade system and drive unit with outer rotors. 3 dwg