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US 12,644,468 B2Granted
Fan wheel
AssigneeMahle International GmbH
InventorsMarkus Schatz, Stefan Schmidgall, Uwe Aschermann
Life of this patent
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Abstract
A fan wheel with successive blades is provided. Noise generation is reduced in that the widths and thicknesses of at least one of the blades vary over its length. A fan that contains such a fan wheel is provided.
Claims15
A fan wheel, specifically for a motor vehicle, wherein the fan wheel rotates about an axis when in use,
- which has successive blades over its circumference,
- wherein the respective blades extend radially over their length, and have a thickness and width,
- wherein the widths and thicknesses of at least one of the blades vary over the length of the blade,
- wherein a leading edge formed by a front edge of at least one of the blades has a uniform curve, and
- wherein a rear edge formed by a trailing edge of at least one of the blades has a non-uniform curve over the length of the blade to obtain the variation in width over the length of the blade.
2 more elements
Dependencies are inferred from the claim text.