Fan rotor with cooling holes
AssigneeHamilton Sundstrand Corporation
InventorsDarryl A. Colson, Brent J. Merritt, Danielle Mansfield-Marcoux
Life of this patent
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Abstract
A disc for a fan rotor (with a pilot to connect to a rotating shaft, a hub and a plurality of blades) includes a flat circular portion connecting to the pilot at an inner edge and to the hub at an outer edge; a plurality of first circular cooling holes of a first diameter located around the inner edge of the disc; and a plurality of second circular cooling holes of a second diameter located around the outer edge of the disc, wherein the second diameter is larger than the first diameter.
Claims14
A disc to allow cooling air to flow to a motor and bearings in a fan rotor with a pilot to connect to a rotating shaft, a hub and a plurality of blades, the disc comprising:
- a flat circular portion configured to connect to the pilot at an inner edge and to the hub at an outer edge;
- a plurality of bearing cooling holes of a first smaller diameter located around the inner edge of the disc;
- and
- a plurality of motor cooling holes of a second larger diameter located around the outer edge of the disc;
- wherein the plurality of bearing cooling holes and the plurality of motor cooling holes control cooling air flow through the bearings and the motor, respectively, and placement of the plurality of bearing cooling holes around the inner edge of the disc encourages less cooling air flow to the bearings and placement of the plurality of motor cooling holes around the outer edge of the disc encourages greater cooling air flow through the motor.
A rotor for a fan system, the rotor comprising:
- a pilot to connect to a shaft for rotating the rotor;
- a circular disc portion extending around the pilot, the disc with a plurality of bearing cooling holes with a first smaller diameter located around an inner edge of the disc and the pilot and a plurality of motor cooling holes with a second larger diameter located around an outer edge of the disc, wherein the plurality of bearing cooling holes and the plurality of motor cooling holes control cooling air flow through bearings and a motor, respectively, and placement of the plurality of bearing cooling holes around the inner edge of the disc encourages less cooling air flow to the bearings and placement of the plurality of motor cooling holes around the outer edge of the disc encourages greater cooling air flow through the motor;
- a hub connecting to the outer edge of the circular disc portion;
- and
- a plurality of blades attached around the hub.
Dependencies are inferred from the claim text.