Jet engine comprising a device for spraying oil into an air-oil volume flow

Patent metadata

Field	Value
Publication number	US-9677422-B2
Application number	US-201414532772-A
Country	US
Kind code	B2
Filing date	Nov 4, 2014
Priority date	Nov 19, 2013
Publication date	Jun 13, 2017
Grant date	Jun 13, 2017

Abstract

The present invention describes a jet engine with a device for spraying oil into an air-oil volume flow guided inside a flow cross-section limited by a wall area. The air-oil volume flow is guidable through an oil separator in order to separate the oil. In accordance with the invention, the oil can be sprayed into the air-oil volume flow in the area of the device via an outlet area designed movable relative to the wall area.

First claim

The invention claimed is:

1. A jet engine comprising:
a wall area forming a flow cross-section;
an outlet area movable relative to the wall area;
a spraying device for injecting a spray of oil into an air-oil volume flow guided inside the flow cross-section,
a separate oil supply separate from the air-oil volume flow for supplying oil to the spraying device;
an oil separator;
the air-oil volume flow being guided through the oil separator to separate the oil from the air-oil volume,
the spraying device being positioned to inject a spray of oil from the separate oil supply into the air-oil volume flow in an area of the spraying device via the outlet area movable relative to the wall area.

2. The jet engine in accordance with claim 1 , wherein the wall area include a feed area connected to the separate oil supply and an outlet area supplied with oil from the separate oil supply via a hole of the feed area passing through the wall area substantially in a radial direction.

3. The jet engine in accordance with claim 2 , wherein the feed area includes an element projecting in the radial direction from the wall area into the flow cross-section of the air-oil volume flow and containing an oil guide duct connected to the hole.

4. The jet engine in accordance with claim 3 , wherein the feed area includes a further element rotatably connected to the projecting element and a further oil guide duct positioned internally of the further element and connected to the oil guide duct.

5. The jet engine in accordance with claim 4 , and further comprising a pivot bearing provided between the projecting element and the further element.

6. The jet engine in accordance with claim 5 , wherein the pivot bearing is a plain bearing.

7. The jet engine in accordance with claim 4 , wherein the further element extends in the radial direction in the flow cross-section of the air-oil volume flow and includes, in an area of a side facing away from a flow direction of the air-oil volume flow, with a hole of the outlet area, the hole issuing into the flow cross-section of the air-oil volume flow.

8. The jet engine in accordance with claim 7 , and further comprising a nozzle device provided in an opening area of the hole of the outlet area, the nozzle device converting the oil from the separate oil supply into a mist.

9. The jet engine in accordance with claim 7 , wherein the outlet area includes several holes, at a distance from one another in the radial direction, each hole issuing into the flow cross-section.

10. The jet engine in accordance with claim 9 , wherein the holes of the further element are connected to one another via the oil guide duct.

11. The jet engine in accordance with claim 4 , wherein a surface of the further element facing the air-oil volume flow relative to the flow direction of the air-oil volume flow includes a sloped surface by which energy of the air-oil volume flow can be transformed into a mechanical drive energy causing a rotary movement of the further element.

12. The jet engine in accordance with claim 4 , wherein the further element is rotatably connected to the projecting element substantially in a center of the flow cross-section of the air-oil volume flow and includes, starting at the rotary connection to the projecting element, partial arm areas, each extending radially in a direction of the wall area limiting the flow cross-section.

13. The jet engine in accordance with claim 12 , wherein the partial arm areas each include a slope with each slope being mirror-inverted to one another.

14. The jet engine in accordance with claim 1 , wherein the oil injectable out of the outlet area into the air-oil volume flow is imparted with a flow direction in the outlet area, the flow direction forming an acute angle with the main flow direction of the air-oil volume flow in the area of the device.

15. The jet engine in accordance with claim 1 , wherein the device includes in a flow direction of the air-oil volume flow several areas for injecting in oil spaced at a distance from one another.

Assignees

• Rolls Royce Deutschland Ltd & Co Kg

Inventors

• Beier Juergen
• Venter Gideon

Classifications

• F05D2260/609

  Deoiling or demisting · CPC title

• F01D25/18 Primary

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

• B01D47/06

  Spray cleaning · CPC title

• F05D2260/98

  Lubrication · CPC title

• B01D46/0086

  Filter condition indicators · CPC title