Jet engine with at least one oil separator

• US 9,587,560 B2
• Filed: 06/30/2014
• Issued: 03/07/2017
• Est. Priority Date: 07/01/2013
• Status: Active Grant

• Current Assignee: Rolls-Royce Deutschland Limited & Company KG (Rolls-Royce Holdings Plc)
• Original Assignee: Rolls-Royce Deutschland Limited & Company KG (Rolls-Royce Holdings Plc)
• Inventors: Beier, Juergen, Venter, Gideon
• Primary Examiner(s): SUTHERLAND, STEVEN M
• Application Number:
  US14/318,848
• Publication Number:
  US 20150000246A1
• Time in Patent Office: 981 Days
• Field of Search: 60/390.8
• US Class Current: 1/1
• CPC Class Codes: F01D 25/18 Lubricating arrangements of machines or engines in general F01M
• CPC Class Codes: F02C 7/06 Arrangements of bearings bearings F16C; Lubricating of turbo machines F01D25/18; of machines or engines in general F01M
• CPC Class Codes: F05D 2260/601 using an ejector or a jet pump
• CPC Class Codes: F05D 2260/605 Venting into the ambient atmosphere or the like
• CPC Class Codes: F05D 2260/609 Deoiling or demisting
• CPC Class Codes: F05D 2300/514 Porosity

Abstract

A jet engine includes at least one oil separator, through which an air-oil volume flow can be guided out of several areas supplied with oil for separating the oil, where a device for spraying oil into the air-oil volume flow is provided. Oil can be sprayed in using the device in the area of each connection between an area supplied with oil and the oil separator and/or downstream of a combining area between at least two air-oil volume flows from two or more areas supplied with oil.

Claims

1. A jet engine including:

an oil separator,

at least one line section forming an internal flow path for an air-oil volume flow from an area supplied with oil to the oil separator for separating the oil,

an oil spraying device including a nozzle for spraying a defined oil spray into the internal flow path,

wherein the oil spraying device is positioned to spray the defined oil spray into at least one chosen from an area of each connection between the area supplied with oil and the oil separator and downstream of a combining area between at least two air-oil volume flows from at least two areas supplied with oil.

2. The jet engine in accordance with claim 1, wherein the oil separator includes a porous area that is rotatable and which is arranged in the internal flow path.

3. The jet engine in accordance with claim 2, wherein the oil spraying device is provided upstream of the porous area.

4. The jet engine in accordance with claim 3, and further comprising a deflection area upstream of the porous area of the oil separator, the deflection area being provided in the internal flow path.

5. The jet engine in accordance with claim 4, and further comprising a centrifuge upstream of the porous area of the oil separator, the centrifuge being provided in the internal flow path.

6. The jet engine in accordance with claim 5, wherein at least one chosen from the deflection area and the centrifuge is provided in an area of the oil separator.

7. The jet engine in accordance with claim 5, wherein at least one chosen from the deflection area and the centrifuge is provided in an area of a pre-chamber.

8. The jet engine in accordance with claim 7, wherein at least one chosen from the oil separator, the pre-chamber, the deflection area and the centrifuge is arranged at least partially inside a casing of an accessory gearbox.

9. The jet engine in accordance with claim 5, wherein the oil spraying device is at least one chosen from provided upstream of the deflection area, provided downstream of the deflection area, provided upstream of the centrifuge and provided downstream of the centrifuge.

10. The jet engine in accordance with claim 7, wherein at least one chosen from the oil separator, the pre-chamber, the deflection area and the centrifuge is arranged at least partially outside a casing of an accessory gearbox.

11. The jet engine in accordance with claim 1, wherein the internal flow path leads from a plurality of areas supplied with of in a direction of the oil separator and combines at least partially before entry into the oil separator.

12. The jet engine in accordance with claim 1, wherein the area supplied with oil is an accessory gearbox having an internal pressure during operation that can be raised to values above a pressure threshold.

13. The jet engine in accordance with one of the claim 1, wherein the area supplied with oil is an oil tank or a bearing chamber.