Oil scoop and shaft with axially-oriented hole

Patent metadata

Field	Value
Publication number	US-9732630-B2
Application number	US-201514671681-A
Country	US
Kind code	B2
Filing date	Mar 27, 2015
Priority date	Mar 27, 2015
Publication date	Aug 15, 2017
Grant date	Aug 15, 2017

Abstract

Aspects of the disclosure are directed to a system associated with an engine of an aircraft. The system includes a shaft configured with at least one axially-oriented hole, and an oil scoop configured to receive oil and provide the oil to the shaft, wherein the oil scoop is manufactured independently from the shaft, and wherein the oil scoop includes at least one retention mechanism for coupling to the shaft after the at least one axially-oriented hole is created in the shaft.

First claim

What is claimed is:

1. A bearing lubrication system comprising:
a shaft including
an inlet,
at least one axially-oriented hole extending downstream from the inlet,
at least one radially-oriented hole axially disposed downstream from the inlet, the at least one radially-oriented hole radially extending from a shaft exterior surface to the at least one axially-oriented hole, and
an axially-oriented spline disposed on the shaft exterior surface;

an oil scoop fluidly coupled to the shaft inlet so that the spline conveys oil axially downstream from the inlet to the at least one radially-oriented hole; and
wherein the oil scoop is fixedly connected to the shaft.

2. The system of claim 1 , wherein the at least one axially-oriented hole includes a plurality of axially-oriented holes.

3. The system of claim 1 , further comprising:
at least one oil jet configured to provide the oil to the oil scoop.

4. The system of claim 1 , further comprising:
the at least one radially-oriented hole configured to convey the oil from the spline to at least one of a seal runner and a bearing.

5. The system of claim 1 , further comprising:
a seal runner coupled to the shaft configured to transfer heat to at least a portion of the oil.

6. The system of claim 1 , further comprising:
a bearing coupled to the shaft configured to transfer heat to at least a portion of the oil.

7. The system of claim 1 , wherein the oil scoop is fixedly connected to the shaft via a press fit onto the shaft.

8. The system of claim 1 , wherein the oil scoop is fixedly connected to the shaft via at least one of an interference fit, a forming of the oil scoop into a groove, an adhesive, a fastener, or a weld.

9. The system of claim 1 , wherein the oil scoop is fixedly connected to the shaft via at least one of an adhesive, a fastener, or a weld.

10. The system of claim 1 , wherein the spline is configured to provide the oil to a bearing and a seal runner via a groove and the at least one radially-oriented hole.

11. The system of claim 10 , wherein the spline is a power turbine output spline, and wherein the shaft includes a plurality of holes that feed the oil to the groove.

12. The system of claim 1 , wherein the oil scoop is an axial oil scoop.

Assignees

• United Technologies Corp

Inventors

• Lucas James L

Classifications

• F01D25/183 Primary

  Sealing means · CPC title

• F01D25/16

  Arrangement of bearings; Supporting or mounting bearings in casings (bearings per se F16C) · CPC title

• F01D25/18

  Lubricating arrangements (of machines or engines in general F01M) · CPC title

• F05D2230/80

  Repairing, retrofitting or upgrading methods · CPC title

• F16C33/6677

  from radial inside, e.g. via a passage through the shaft and/or inner ring · CPC title