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US 5,437,541 AGranted
Blade for axial fan
OwnerJohn Vainrubinventor
Life of this patent
Estimating the term…
Abstract
A blade for use in an axial fan includes a plurality of vanes which each have a winglet formed on their front face to increase the air flow of the fan at a given blade velocity.
Claims18
A blade for an axial fan comprising:
- a central hub;
- a plurality of vanes extending radially outward from said central hub, each of said plurality of vanes having a front face, a back face, a leading edge, a trailing edge, an outer edge, a winglet disposed on said front face and extending outwardly therefrom, said winglet having a length so as to extend along said outer edge, and said winglet having a width and a height which decrease along said length from said leading edge toward said trailing edge;
- and
- an outer ring being disposed radially outward from and being connected to said vanes.
1 more element
A blade for an axial fan comprising:
- a central hub;
- a plurality of vanes extending radially outward from said central hub, each of said plurality of vanes having a front face, a back face, a leading edge, a trailing edge, an outer edge, a winglet disposed on said front face and extending outwardly therefrom at approximately a right angle, said winglet having a length so as to extend along said outer edge, and said winglet having a width and a height which decrease along said length from said leading edge toward said trailing edge;
- an outer ring being disposed radially outward from said vanes;
- and
- ring supports connecting said outer ring to said vanes.
2 more elements
In an axial fan, a blade comprising:
- a central hub;
- a plurality of vanes extending radially outward from said central hub, each of said plurality of vanes having a front face, a back face, a leading edge, a trailing edge, an outer edge, and a winglet disposed on said front face and extending outwardly therefrom, said winglet having a length so as to extend along said outer edge, and said winglet having a width and a height which decrease along said length from said leading edge toward said trailing edge;
- and
- an outer ring being disposed radially outward from and being connected to said vanes.
1 more element
Dependencies are inferred from the claim text.