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US 11,236,759 B2Granted
Contoured fan blades and associated systems and methods
AssigneeLegend Brands, Inc.
InventorAlexander John Uffelman
Life of this patent
Estimating the term…
Abstract
Contoured fan blades and associated systems and methods are disclosed herein. A representative embodiment includes a hub and multiple curved fan blades circumferentially arranged around, and coupled to, the hub. Individual fan blades can have a tip, a first curved edge, and a second curved edge. The first and second curved edges extend over at least part of the length between the hub to the tip of the fan blade. The fan blade is formed with multiple upper channels and multiple lower channels. The multiple upper and lower channels extend from the first curved edge to the second curved edge.
Claims19
A fan, comprising:
- a hub;
- and
- multiple fan blades arranged circumferentially around, and coupled to, the hub, with each fan blade having a tip, a first curved edge, and a second curved edge, the first and second curved edges extending over at least part of the length between the hub and the tip of the fan blade, wherein the first curved edge extends in a length direction of the fan blade, and repetitively varies in a direction perpendicular to the length direction and a width direction of the fan blade, by an amount greater than any repetitive variation in both the width and length directions;
- wherein each of the fan blades is formed with multiple upper channels and multiple lower channels;
- wherein the multiple upper channels extend from the first curved edge to the second curved edge;
- and
- wherein the multiple lower channels extend from the first curved edge to the second curved edge.
4 more elements
A fan, comprising:
- a hub;
- and
- multiple fan blades arranged circumferentially around, and coupled to, the hub, with each fan blade havinq a tip, a first curved edge, and a second curved edge, the first and second curved edges extending over at least part of the length between the hub and the tip of the fan blade;
- wherein each of the fan blades is formed with multiple upper channels and multiple lower channels;
- wherein the multiple upper channels extend from the first curved edge to the second curved edge;
- wherein the multiple lower channels extend from the first curved edge to the second curved edge;
- wherein a shape of the first curved edge is formed from multiple sine waves;
- and
- wherein the multiple sine waves include a first sine wave having a first amplitude and a second sine wave having a second amplitude, and wherein the first amplitude is different than the second amplitude.
6 more elements
A fan, comprising:
- a hub;
- and
- multiple fan blades arranged circumferentially around, and coupled to, the hub, with each fan blade having a tip, a first curved edge, and a second curved edge, the first and second curved edges extending over at least part of the length between the hub and the tip of the fan blade;
- wherein each of the fan blades is formed with multiple upper channels and multiple lower channels;
- wherein the multiple upper channels extend from the first curved edge to the second curved edge;
- wherein the multiple lower channels extend from the first curved edge to the second curved edge;
- and
- wherein a shape of the first curved edge is formed from a first set of sine waves and a second set of sine waves, and wherein the first set of sine waves and the second set of sine waves have different wavelengths.
5 more elements
A fan, comprising:
- a hub;
- and
- multiple fan blades arranged circumferentially around, and coupled to, the hub, with each fan blade having a tip a first curved edge, and a second curved edge, the first and second curved edges extending over at least part of the length between the hub and the tip of the fan blade;
- wherein each of the fan blades is formed with multiple upper channels and multiple lower channels;
- wherein the multiple upper channels extend from the first curved edge to the second curved edge;
- wherein the multiple lower channels extend from the first curved edge to the second curved edge;
- wherein a shape of the first curved edge is formed from a first set of sine waves, and wherein a shape of the second curved edge is formed from a second set of sine waves;
- and
- wherein each sine wave of the first set of sine waves has a first amplitude, and wherein each sine wave of the second set of sine waves has a second amplitude different than the first amplitude.
6 more elements
A method for manufacturing a fan, comprising:
- forming a hub;
- forming multiple fan blades, each fan blade having a tip, a first curved edge, and a second curved edge, the first and second curved edges extending over at least part of the length of the fan blade;
- and
- attaching the multiple fan blades circumferentially around the hub;
- wherein forming the multiple fan blades includes forming each of the fan blades with multiple upper channels and multiple lower channels, and
- wherein the first curved edge extends in a length direction of the fan blade, and repetitively varies in a direction perpendicular to the length direction and a width direction of the fan blade, by an amount greater than any repetitive variation in both the width and length directions.
3 more elements
Dependencies are inferred from the claim text.