Integrated oil supply tube and check valve

Patent metadata

Field	Value
Publication number	US-10156158-B2
Application number	US-201615137690-A
Country	US
Kind code	B2
Filing date	Apr 25, 2016
Priority date	Apr 25, 2016
Publication date	Dec 18, 2018
Grant date	Dec 18, 2018

Abstract

An oil supply assembly for a bearing damper of a gas turbine engine includes an oil supply tube configured to supply oil in a first direction. The assembly also includes a bearing support having a bearing damper path connecting the bearing damper to the oil supply tube and a bearing compartment path connecting a bearing compartment to the oil supply tube. The assembly also includes a check valve disposed within the bearing damper path and configured to allow fluid communication in the first direction from the oil supply tube to the bearing damper and block fluid communication in a second direction opposite the first direction.

First claim

What is claimed is:

1. An oil supply assembly for a bearing damper of a gas turbine engine, comprising:
an oil supply tube configured to supply oil in a radially inward direction;
a bearing support having a bearing damper path connecting the bearing damper to the oil supply tube and a bearing compartment path connecting a bearing compartment to the oil supply tube, the bearing support being located radially inward from the oil supply tube;
a check valve disposed within the bearing damper path and configured to allow fluid communication in the radially inward direction from the oil supply tube to the bearing damper and block fluid communication in a radially outward direction;
a connector intermediate the oil supply tube and the check valve, the connector decreasing in cross-sectional area in the radially inward direction; and
a conduit intermediate a radially inward end of the check valve and the bearing damper, the conduit configured to decrease oil from becoming pushed in the direction of the check valve.

2. The oil supply assembly of claim 1 , wherein oil supplied by the oil supply tube splits between the bearing damper path and the bearing compartment path at a connection point in the bearing support.

3. The oil supply assembly of claim 2 , wherein the oil supply tube is connected to the check valve by the connector.

4. The oil supply assembly of claim 3 , wherein the connector is located in the connection point.

5. The oil supply assembly of claim 3 , wherein the connector comprises a ligament configured to allow oil to pass through the ligament.

6. The oil supply assembly of claim 3 , wherein the connector is configured to allow the check valve to be removed from the bearing support when the oil supply tube is removed.

7. The oil supply assembly of claim 1 , wherein the bearing compartment comprises oil nozzles configured to spray oil for cooling and lubricating.

8. A mid-turbine frame of a gas turbine engine comprising:
a bearing damper configured to reduce vibrations in the gas turbine engine;
an oil supply tube configured to supply oil in a radially inward direction to the bearing damper;
a bearing support having a bearing damper path connecting the bearing damper to the oil supply tube and a bearing compartment path connecting a bearing compartment to the oil supply tube, the bearing support being located radially inward from the oil supply tube and radially outward from the bearing damper;
a check valve disposed within the bearing damper path and configured to allow fluid communication in the radially inward direction from the oil supply tube to the bearing damper and block fluid communication in a radially outward direction;
a connector intermediate the oil supply tube and the check valve, the connector decreasing in cross-sectional area in the radially inward direction; and
a conduit intermediate a radially inward end of the check valve and the bearing damper, the conduit configured to decrease oil from becoming pushed in the direction of the check valve.

9. The mid-turbine frame of claim 8 , wherein oil supplied by the oil supply tube splits between the bearing damper path and the bearing compartment path at a connection point in the bearing support.

10. The mid-turbine frame of claim 9 , wherein the oil supply tube is connected to the check valve by the connector.

11. The mid-turbine frame of claim 10 , wherein the connector is located in the connection point.

12. The mid-turbine frame of claim 10 , wherein the connector comprises a ligament configured to allow oil to pass through the ligament.

13. The mid-turbine frame of claim 10 , wherein the connector is configured to allow the check valve to be removed from the bearing support when the oil supply tube is removed.

14. The mid-turbine frame of claim 8 , wherein the bearing compartment comprises oil nozzles configured to spray oil for cooling and lubricating.

15. The mid-turbine frame of claim 8 , wherein the bearing damper is an annular bearing damper.

16. An oil supply assembly for a bearing damper of a gas turbine engine, comprising:
a bearing damper oil supply tube configured to supply oil to the bearing damper;
a bearing compartment oil supply tube configured to supply oil to a bearing compartment;
a bearing support having a bearing damper path connecting the bearing damper to the bearing damper oil supply tube and a bearing compartment path connecting the bearing compartment to the bearing compartment oil supply tube, the bearing support being located radially inward from the bearing damper oil supply tube;
a check valve disposed within the bearing damper path and configured to allow fluid communication in a radially inward direction from the bearing damper oil supply tube to the bearing damper and block fluid communication in a radially outward direction;
a connector intermediate the bearing damper oil supply tube and the check valve, the connector decreasing in cross-sectional area in the radially inward direction; and
a conduit intermediate a radially inward end of the check valve and the bearing damper, the conduit configured to decrease oil from becoming pushed in the direction of the check valve.

17. The oil supply assembly of claim 16 , wherein the oil supplied by the bearing damper oil supply tube is separate from the oil supplied by the bearing compartment oil supply tube.

18. The oil supply assembly of claim 16 , wherein the oil supply tube is connected to the check valve by a connector.

19. The oil supply assembly of claim 18 , wherein the connector comprises a plurality of ligaments configured to allow oil to pass through the ligaments.

20. The oil supply assembly of claim 18 , wherein the connector is configured to allow the check valve to be removed from the bearing support when the oil supply tube is removed.

Assignees

• United Technologies Corp

Inventors

• Davis Todd A

Classifications

• F16C27/045

  with a fluid film, e.g. squeeze film damping · CPC title

• F16C39/04

  using hydraulic or pneumatic means · CPC title

• F16C41/005

  Fluid passages not relating to lubrication or cooling · CPC title

• F05D2260/20

  Heat transfer, e.g. cooling · CPC title

• F01D25/125

  of bearings · CPC title