Bearing support assembly

Patent metadata

Field	Value
Publication number	US-2019293293-A1
Application number	US-201815927285-A
Country	US
Kind code	A1
Filing date	Mar 21, 2018
Priority date	Mar 21, 2018
Publication date	Sep 26, 2019
Grant date	—

Abstract

A bearing support may include a central shaft, a flange shaft, and a tube boss. The central shaft may include a central longitudinal axis extending between a first end and a second end of the bearing support. The flange shaft may extend radially outward of the central shaft at an acute angle, relative to the central longitudinal axis from the first end to the second end, and the flange shaft may include a rim defining an aperture. The tube boss extends from the central shaft radially outward through the aperture, according to various embodiments. An annular channel may be between the rim and the tube boss.

First claim

What is claimed is:

1 . A bearing support comprising:
a central shaft comprising a central longitudinal axis extending between a first end and a second end of the bearing support; a flange shaft extending radially outward of the central shaft at an acute angle, relative to the central longitudinal axis from the first end to the second end, wherein the flange shaft comprises a rim defining an aperture; and a tube boss extending from the central shaft radially outward through the aperture, wherein an annular channel is defined between the rim and the tube boss.

2 . The bearing support of claim 1 , wherein a centerline axis of the tube boss is non-parallel to the central longitudinal axis of the central shaft.

3 . The bearing support of claim 1 , wherein the tube boss comprises a centerline axis, wherein the tube boss and the annular channel are concentric about the centerline axis.

4 . The bearing support of claim 1 , wherein the tube boss is a first tube boss, wherein the rim is a second tube boss.

5 . The bearing support of claim 4 , wherein:
the second tube boss comprises a first side facing the first end of the bearing support; the second tube boss comprises a second side facing the second end of the bearing support; the first side of the second tube boss extends from the central shaft; and the second side of the second tube boss is floating relative to the central shaft.

6 . The bearing support of claim 5 , wherein a gap is defined between the second side of the second tube boss and the central shaft.

7 . The bearing support of claim 6 , wherein the gap enables radial deflection of the flange shaft in response to load on the bearing support.

8 . The bearing support of claim 1 , wherein:
a first cavity is defined within the central shaft; a second cavity is defined between the central shaft and the flange shaft; and a third cavity is defined radially outward of the flange shaft.

9 . The bearing support of claim 8 , wherein the tube boss is configured to fluidly connect the first cavity to the third cavity.

10 . The bearing support of claim 9 , wherein the annular channel is open to and extends between the second cavity and the third cavity.

11 . The bearing support of claim 10 , wherein an annular sealing member is configured to be disposed within the annular channel to fluidly separate the second cavity from the third cavity.

12 . A gas turbine engine comprising:
a bearing support comprising:
a central shaft extending around and along an engine central longitudinal axis of the gas turbine engine, wherein the bearing support comprises a first end and a second end;
a flange shaft extending radially outward of the central shaft at an acute angle, relative to the engine central longitudinal axis from the first end to the second end, wherein the flange shaft comprises a rim defining an aperture; and
a tube boss extending from the central shaft radially outward through the aperture, wherein an annular channel is defined between the rim and the tube boss; and
an annular sealing member disposed within the annular channel.

13 . The gas turbine engine of claim 12 , wherein the annular sealing member comprises a sleeve and a piston ring.

14 . The bearing support of claim 12 , wherein:
a first cavity is defined within the central shaft; a second cavity is defined between the central shaft and the flange shaft; a third cavity is defined radially outward of the flange shaft; the tube boss is configured to fluidly connect the first cavity to the third cavity; and the annular sealing member is configured to fluidly separate the second cavity from the third cavity.

15 . The gas turbine engine of claim 12 , wherein the tube boss comprises a centerline axis, wherein the tube boss and the annular channel are concentric about the centerline axis.

16 . The gas turbine engine of claim 15 , wherein the tube boss is a first tube boss, wherein the rim is a second tube boss.

17 . The gas turbine engine of claim 16 , wherein:
the second tube boss comprises a first side facing the first end of the bearing support; the second tube boss comprises a second side facing the second end of the bearing support; the first side of the second tube boss extends from the central shaft; and the second side of the second tube boss is floating relative to the central shaft.

18 . The gas turbine engine of claim 17 , wherein a gap is defined between the second side of the second tube boss and the central shaft.

19 . A method of manufacturing a gas turbine engine, the method comprising;
forming a bearing support comprising a central shaft and a flange shaft extending from the central shaft, wherein a tube boss extends from the central shaft through an aperture defined by a rim of the flange shaft; and positioning an annular sealing member within an annular channel defined between the tube boss and the rim.

20 . The method of claim 19 , wherein the annular sealing member comprises a sleeve and a piston ring.

Assignees

• United Technologies Corp

Inventors

• Davis Todd A
• Valva Christopher M
• Rosen Daniel
• Amador Armando
• Hegde Aneil S
• Rafatpanah Ramin M

Classifications

• F02C7/28

  Arrangement of seals · CPC title

• F23R3/60 Primary

  Support structures; Attaching or mounting means · CPC title

• F23R3/002

  Wall structures (F23R3/02 and F23R3/007 take precedence) · CPC title

• F01D25/162

  Bearing supports · CPC title

• F23R2900/00012

  Details of sealing devices · CPC title