Portable fan housing
First Claim
1. A barrel assembly for an axial flow fan comprising a sheet of flexible material, a body portion and a vane assembly, said body portion having a circular inlet and a barrel seat extending downstream from the periphery of said inlet, said vane assembly having a plurality of evenly spaced-apart radially extending vanes, said vanes each being of substantially equal radial length and each having a free end, the longitudinal axis of said vane assembly being coincident with the central axis of said inlet, said sheet of material being wrapped around said free ends of said vanes and said barrel seat, said barrel seat providing a seat which the formed tubular end of said sheet of material contacts, and means for retaining said sheet of material in position.
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Accused Products
Abstract
A barrel assembly for an axial flow fan comprises a sheet of flexible material, a body portion and a vane assembly. The body portion has a circular inlet and a barrel seat extending downstream from the periphery of the inlet. The vane assembly has a plurality of evenly spaced-apart radially extending vanes. The vanes are of equal radial length and each has a free end. The longitudinal axis of the vane assembly is coincident with the central axis of the inlet. The circumference of the circle containing the free ends of the vanes is substantially equal to the circumference of the barrel seat. The sheet of material wrapped around the free ends of the vanes is also wrapped around the barrel seat. Means for retaining the sheet of material in position is provided. A cabinet may be provided for the barrel assembly. The closed cavity between the barrel assembly and the interior surfaces of the cabinet may be filled with vibration absorbing material for supporting the barrel assembly.
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Citations
30 Claims
- 1. A barrel assembly for an axial flow fan comprising a sheet of flexible material, a body portion and a vane assembly, said body portion having a circular inlet and a barrel seat extending downstream from the periphery of said inlet, said vane assembly having a plurality of evenly spaced-apart radially extending vanes, said vanes each being of substantially equal radial length and each having a free end, the longitudinal axis of said vane assembly being coincident with the central axis of said inlet, said sheet of material being wrapped around said free ends of said vanes and said barrel seat, said barrel seat providing a seat which the formed tubular end of said sheet of material contacts, and means for retaining said sheet of material in position.
- 14. In an axial flow fan enclosure, a barrel assembly having an inlet and an outlet and a cabinet for said barrel assembly, said barrel assembly comprising a sheet of flexible material, and a vane assembly, said vane assembly having a plurality of evenly spaced-apart, radially-extending vanes, said vanes being of substantially equal radial length and each vane having a free end, the longitudinal axis of said vane assembly being coincident with the central axis of said inlet, said sheet of material being wrapped around said free ends of said vanes, and means for retaining said sheet of material in position around said vane assembly, said cabinet enclosing said barrel assembly with the inlet and outlet of said barrel assembly being unobstructed by said cabinet, the arrangement of said cabinet and said barrel assembly being such that a closed cavity is defined between the barrel assembly and the interior surfaces of said cabinet, said closed cavity being filled with a load-supporting, vibration- and shock-absorbing material which readily conforms to the shape of the external surface of said barrel assembly so that said barrel assembly is surrounded by said material and thereby supported in said cabinet.
Specification