Back to results
US 12,331,667 B2Granted
Flow draining enhancement system for engine sump cavities
AssigneeRolls-Royce North American Technologies Inc.
InventorsJacob Harral, Michael Kabbes, Michael Dornfeld
Life of this patent
Estimating the term…
Abstract
Scavenge systems for a gas turbine engine including a valve positioned at a first drainage outlet of an enclosure to selectively open and evacuate liquid from the cavity through the first drainage outlet in response to the valve being submerged in liquid are provided. Methods of reducing suction of air from an enclosure of a cavity of a gas turbine engine are further provided.
Claims20
An oil sump system for a gas turbine engine, the oil sump system comprising:
- a first oil drainage outlet in a surface of an enclosure of the oil sump system;
- a second oil drainage outlet in the surface, the second oil drainage outlet in liquid communication with the first oil drainage outlet, wherein the surface is substantially unobstructed between at least the first oil drainage outlet and the second oil drainage outlet such that liquid is free to flow between the first oil drainage outlet and the second oil drainage outlet along the surface due to, at least in part, an orientation of the gas turbine engine;
- wherein an entry of the first oil drainage outlet, an entry of the second oil drainage outlet, and the surface extending therebetween are substantially coplanar;
- a suction pump in liquid communication with the first oil drainage outlet and the second oil drainage outlet;
- and
- a valve positioned at the first oil drainage outlet to selectively open and evacuate the liquid from the enclosure of the oil sump system through the first oil drainage outlet in response to the valve being submerged in the liquid, the liquid accumulating on the surface when the gas turbine engine is at level flight.
3 more elements
A scavenge system for a gas turbine engine, the scavenge system comprising:
- a first drainage outlet in a surface of an enclosure of a cavity in the gas turbine engine;
- a second drainage outlet in the surface, the second drainage outlet in liquid communication with the first drainage outlet, wherein an entry of the first drainage outlet, an entry of the second drainage outlet, and the surface extending therebetween are substantially coplanar;
- a suction pump in liquid communication with the first drainage outlet and the second drainage outlet;
- and
- a valve positioned at the first drainage outlet to selectively open and evacuate liquid from the cavity through the first drainage outlet in response to the valve being submerged in the liquid, the liquid accumulating on the surface when the gas turbine engine is at level flight, and wherein the second drainage outlet is unobstructed such that the second drainage outlet is open during all operating conditions of the gas turbine engine and the liquid is free to drain out of the second drainage outlet during all operating conditions of the gas turbine engine.
2 more elements
Dependencies are inferred from the claim text.