Non-uniform spray pattern oil delivery nozzle

Patent metadata

Field	Value
Publication number	US-11230946-B2
Application number	US-201916269637-A
Country	US
Kind code	B2
Filing date	Feb 7, 2019
Priority date	Feb 7, 2019
Publication date	Jan 25, 2022
Grant date	Jan 25, 2022

Abstract

A gas turbine engine includes an engine static structure. A rotating structure is configured to rotate relative to the engine static structure. The rotating structure has a target area with first and second directions. The first direction is greater than the second direction. A lubrication system includes a nozzle having a non-circular exit aimed at the target area. The exit provides a width and a height. The width is greater than the height. The width is oriented in the first direction.

First claim

What is claimed is:

1. A gas turbine engine comprising:
an engine static structure;
a rotating structure configured to rotate relative to the engine static structure, the rotating structure having a target area defined by first and second dimensions respectively arranged in first and second directions, the first dimension greater than the second dimension; and
a lubrication system including a nozzle having a non-circular exit aimed at the target area, the exit providing a width and a height, the width greater than the height, and the width oriented in the first direction, the exit configured to spray a lubricant directly onto the target area, wherein the target area is a window providing an opening in the rotating structure to flow oil underneath a bearing supporting the rotating structure for rotation relative to the engine static structure.

2. The gas turbine engine of claim 1 , wherein the rotating structure includes a threaded fastener that provides a portion of the target area.

3. The gas turbine engine of claim 1 , wherein the target area is provided by a scoop on the rotating structure, the scoop configured to retain a lubricant sprayed by the nozzle.

4. The gas turbine engine of claim 1 , wherein the lubrication system includes a spray bar terminating in the nozzle.

5. The gas turbine engine of claim 4 , wherein the spray bar has multiple nozzles.

6. The gas turbine engine of claim 1 , wherein the target area includes a scoop configured to retain lubricant during rotation of the rotating structure.

7. The gas turbine engine of claim 6 , wherein the scoop has a window bounded by a flange.

8. The gas turbine engine of claim 1 , comprising a reservoir configured to collect the lubricant, and a pump configured to deliver the lubricant from the reservoir to the nozzle.

9. The gas turbine engine of claim 1 , wherein the exit has an elliptical shape.

10. The gas turbine engine of claim 1 , wherein the exit has a shape having parallel sides adjoined by semicircles.

11. The gas turbine engine of claim 1 , wherein the exit is configured to provide a flattened spray pattern.

12. A gas turbine engine comprising:
an engine static structure;
a rotating structure configured to rotate relative to the engine static structure, the rotating structure having a target area defined by first and second dimensions respectively arranged in first and second directions, the first dimension greater than the second dimension, wherein the rotating structure includes a shaft, and a bearing supports the shaft for rotation relative to the engine static structure, wherein a nozzle is arranged in a compartment with the bearing, wherein the rotating structure includes a spacer abutting the bearing, the spacer provides the target area; and
a lubrication system including the nozzle, the nozzle having a non-circular exit aimed at the target area, the exit providing a width and a height, the width greater than the height, and the width oriented in the first direction, the exit configured to spray a lubricant directly onto the target area, wherein the target area is a window providing an opening in the spacer to flow oil underneath the bearing.

Assignees

• United Technologies Corp
• Raytheon Tech Corp

Inventors

• Davis Michael M
• Craig Colin D

Classifications

• F01M2013/0027

  with a de-icing or defrosting system · CPC title

• F16N2210/14

  Bearings · CPC title

• F01D25/125

  of bearings · CPC title

• F05D2250/14

  elliptical · CPC title

• F01D25/18 Primary

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