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US 11,306,656 B2Granted
Oil drainback arrangement for gas turbine engine
AssigneeRaytheon Technologies Corporation
InventorsTodd A. Davis, Reade W. James, Peter T. Schutte, Juan Jimenez
Life of this patent
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Abstract
A gas turbine engine according to an exemplary aspect of the present disclosure includes, among other things, a passageway configured to permit fluid to drain back into a bearing compartment. The passageway has an inlet outside the bearing compartment and an outlet inside the bearing compartment. The outlet is spaced-apart from a central rotational axis of a towershaft gear.
Claims19
A gas turbine engine, comprising:
- a passageway configured to permit fluid to drain back into a bearing compartment, the passageway having an inlet outside the bearing compartment and an outlet inside the bearing compartment, wherein the outlet is spaced-apart from a central rotational axis of a towershaft gear;
- a seal configured to contain fluid within the bearing compartment, wherein the inlet is downstream of the seal;
- and
- a gutter arranged adjacent the seal, wherein the gutter is configured to direct fluid into the inlet, wherein the gutter is substantially U-shaped and the gutter is arranged such that the substantial U-shape is open facing toward a central longitudinal axis of the gas turbine engine.
1 more element
An assembly configured to drain fluid back into a bearing compartment, comprising:
- a gutter arranged outside the bearing compartment and including an orifice leading to a passageway;
- and
- a conduit attached to the gutter and defining a portion of the passageway including an outlet of the passageway, wherein the conduit is arranged such that the outlet of the passageway is inside the bearing compartment and is spaced-apart from a central rotational axis of a towershaft gear, wherein the gutter is substantially U-shaped and the gutter is arranged such that the substantial U-shape is open facing away from the conduit.
Dependencies are inferred from the claim text.