Multiple impeller fan for a shrouded floor drying fan
AssigneeStudebaker Enterprises, Inc.
InventorRoy Studebaker
Life of this patent
Estimating the term…
Abstract
A method and apparatus for drying floors and carpets using a double impeller fan for generating a pressurized air stream within a vertical cylindrical fan shroud that is spaced two to five inches away from the floor on a set of legs such that an opening is formed between the shroud and the floor. The air stream is directed along the cylindrical shroud vertically toward the floor. At least a peripheral portion of the air stream is exhausted from the shroud in a substantially laminar flow at an angle that is inclined from the vertical and is exhausted radially into ambient air as a substantially laminar air stream.
Claims22
A fan, comprising:
- a shroud having an air inlet orifice, an air outlet orifice, and a confined space there between;
- air permeable protective covers secured to each of the air inlet orifice and the air outlet orifice;
- a motor having an elongated drive shaft, the motor being secured to the shroud with the drive shaft extended along a longitudinal axis thereof between the air inlet orifice and the air outlet orifice;
- and
- a plurality of impellers secured in tandem to the elongated drive shaft.
A fan, comprising:
- a tubular shroud having a substantially circular air inlet orifice and a substantially circular air outlet orifice spaced apart by a substantially cylindrical wall;
- an air permeable protective cover secured to the air inlet orifice;
- a louvered grille secured to the air outlet orifice;
- an electric fan motor suspended within the shroud between the air inlet and outlet orifices, the fan motor having an elongated drive shaft substantially aligned with a longitudinal axis of the tubular shroud;
- and
- a pair of impellers secured in tandem to the drive shaft, an impeller distal from the motor being positioned in close proximity to the louvered grille secured to the air outlet orifice.
The fan of claim d12 wherein each of the pair of impellers is pitched at twenty to thirty degrees.
A fan, comprising:
- a substantially cylindrical fan shroud having an inlet orifice and an outlet orifice spaced apart by a substantially cylindrical space;
- a pair of tandem fan impellers;
- a means for suspending the pair of fan impellers within the cylindrical space for rotation about a rotational axis substantially aligned with a longitudinal axis of the cylindrical space;
- and
- a means for driving the pair of fan impellers in substantially identical angular rotation about the rotational axis.
Dependencies are inferred from the claim text.