Buffer air system for a bearing compartment
AssigneeRtx Corporation
InventorsJorn A. Glahn, Gregory M. Dooley, Collin P. Fitzgerald
Life of this patent
Estimating the term…
Abstract
An assembly is provided for a turbine engine. This assembly includes a rotating structure rotatable about an axis, a stationary structure and a bearing. The stationary structure forms a bearing compartment, a buffer cavity, a low pressure cavity and a high pressure cavity with the rotating structure. The buffer cavity surrounds the bearing compartment. The low pressure cavity surrounds the buffer cavity. The high pressure cavity surrounds the low pressure cavity. The bearing is within the bearing compartment. The bearing rotatably couples the rotating structure to the stationary structure.
Claims19
An assembly for a turbine engine, comprising:
- a rotating structure rotatable about an axis;
- a stationary structure forming a bearing compartment, a buffer cavity, a low pressure cavity and a high pressure cavity with the rotating structure, the buffer cavity surrounding the bearing compartment, the low pressure cavity surrounding the buffer cavity, and the high pressure cavity surrounding the low pressure cavity, wherein the buffer cavity is radially outboard of and adjacent a radial outer side of the bearing compartment, and the buffer cavity extends axially along the radial outer side of the bearing compartment;
- and
- a bearing within the bearing compartment, the bearing rotatably coupling the rotating structure to the stationary structure.
An assembly for a turbine engine, comprising:
- a rotating structure rotatable about an axis;
- a stationary structure comprising a combustor, the stationary structure forming a bearing compartment, a buffer cavity, a low pressure cavity, a high pressure cavity and a diffuser plenum, the combustor within the diffuser plenum, the buffer cavity radially outboard of and adjacent the bearing compartment, the buffer cavity extending circumferentially about the bearing compartment, the low pressure cavity radially adjacent and extending circumferentially about the buffer cavity, the high pressure cavity radially adjacent and extending circumferentially about the low pressure cavity, and the diffuser plenum radially adjacent and extending circumferentially about high pressure cavity;
- and
- a bearing within the bearing compartment, the bearing rotatably coupling the rotating structure to the stationary structure.
Dependencies are inferred from the claim text.