Fan for regenerative air vacuum street sweeper, and method of fan manufacture and assembly
AssigneeCurbtender Sweepers LLC
InventorsAditya G. Anand, Clayton D. Wright, Aaron T. Baughman
Life of this patent
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Abstract
A fan with airfoil blades is provided for a regenerative air vacuum street sweeper. The blades are formed using cut and pressed upper and lower panels which are welded at a forward edge to a rod to form the airfoil leading edge and welded at the rear edges to form the airfoil trailing edge. Pins extend laterally outwardly from the rod for mounting each blade in corresponding holes in the front and rear plates of the fan housing. The side edges of the blade are welded to the plates at a 9-11° angle of attack. The airfoil blades allow for reduced size, horse power, noise, and manufacturing and shipping costs.
Claims15
A method of assembling a fan having a housing with a plurality of internal airfoil blades each having leading and trailing edges, comprising:
- inserting pins on opposite sides of the leading edge of each blade into mating holes in opposite sides of the housing;
- and
- fixing the trailing edges of each blade to the housing.
A method of assembling a fan for a street sweeper, the fan having a housing and a plurality of blades, the method comprising:
- extending pins outwardly from opposite lateral sides of each blade;
- and
- mating the pins in holes on opposite lateral sides of the housing to mount the blades into the housing.
A street sweeper fan, comprising:
- a housing;
- a plurality of blades, each blade having a leading edge, a trailing edge, and opposite lateral sides;
- each blade having pins extending laterally outwardly;
- and
- the housing having opposite lateral sides with holes into which the blade pins are inserted to mount the blades to the housing.
Dependencies are inferred from the claim text.