DRIVE SET WITH IMPELLER MOUNTED OVERHUNG ON EXTENDED SHAFT Russian patent published in 2012 - IPC F04D25/02 F04D29/62 

FIELD: electricity.

SUBSTANCE: drive is comprised of an impeller of fan 1, drive 2 with frame 8, extended shaft 3 with bearing unit 10 on rack 12. Two vibratory bearings 7, 11 are situated under drive 2 and unit 10. Each vibratory bearing 7, 11 is comprised of a round rubber pad situated between two metal disks with threaded pins being located in the center of disks. The pads are integral part of metal disks so that all pins are projected forward and have common axial line passing through the pins and central axial lines of outer disks and pads diameters. The pivot center of shaft 3 axis and points of horizontal plane crossing with axial lines going through the pins in the middle between metal disks form isosceles triangle with a vertex of angle being on the pivot center and equal to 90°±10%. Vibratory bearings 7, 11 are installed in the vertical plane passing through the projected outward pins, drive pivot center forming isosceles triangles and located away from the impeller 1 at h₁ and h₂ distance. The extended shaft 4 of drive 2 is mated with the end of shaft 3 by means of axial sleeve coupling 9.

EFFECT: reduced thermal load effects on drive and compensation of misbalance during fan impeller rotation.

4 dwg