Multiple Fan Blade Angles in a Single Crossflow Fan
AssigneeAGCO Corporation
InventorBryan S. Claerhout
Life of this patent
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Abstract
A fan may be provided. The fan may comprise a first plurality of vanes and a second plurality of vanes. The first plurality of vanes may be arranged substantially parallel to an axis of rotation and positioned along a first arc substantially centered on the axis of rotation. Vanes in the first plurality of vanes may be being positioned at a first angle relative to the first arc. The second plurality of vanes may be arranged substantially parallel to the axis of rotation and positioned along a second arc substantially centered on the axis of rotation. Vanes in the second plurality of vanes may be positioned at a second angle relative to the second arc. The first angle may be different than the second angle.
Claims20
An apparatus comprising:
- a first plurality of vanes arranged substantially parallel to an axis of rotation and positioned along a first arc substantially centered on the axis of rotation, the vanes in the first plurality of vanes being positioned at a first angle relative to the first arc;
- and
- a second plurality of vanes arranged substantially parallel to the axis of rotation and positioned along a second arc substantially centered on the axis of rotation, the vanes in the second plurality of vanes being positioned at a second angle relative to the second arc, the first angle being different than the second angle.
An apparatus comprising:
- a combine having a sieve;
- and
- a fan arranged to direct a gas at least partially toward the sieve, the fan comprising:
- a first plurality of vanes arranged substantially parallel to an axis of rotation, the vanes in the first plurality of vanes positioned a first radius from the center of the axis of rotation, the vanes in the first plurality of vanes being positioned at a first angle of attack;
- and
- a second plurality of vanes arranged substantially parallel to the axis of rotation the vanes in the second plurality of vanes positioned a second radius from the center of the axis of rotation, the vanes in the second plurality of vanes being positioned at a second angle of attack, the first angle of attack being different than the second angle of attack.
A method comprising:
- rotating a first plurality of vanes about an axis of rotation, the first plurality of vanes arranged at a first angle relative to the axis of rotation;
- rotating a second plurality of vanes about the axis of rotation, the second plurality of vanes arranged at a second angle relative to the axis of rotation, the second angle relative to the axis of rotation being different than the first angle relative to the axis of rotation;
- and
- creating a desired airflow pattern in response to rotating the first plurality of vanes and the second plurality of vanes about the axis or rotation.
Dependencies are inferred from the claim text.