Jet engine with at least one oil separator, through which an air-oil-volume flow can be guided

• US 9,370,739 B2
• Filed: 06/27/2014
• Issued: 06/21/2016
• 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): Smith, Duane
• Assistant Examiner(s): PHAM, MINH CHAU THI
• Application Number:
  US14/317,709
• Publication Number:
  US 20150007531A1
• Time in Patent Office: 725 Days
• Field of Search: 553/06, 553/45, 554/04, 554/61, 963/06, 60/39, 60/8, 60/390.92, 415/110
• US Class Current: 1/1
• CPC Class Codes: B01D 2257/702 Hydrocarbons
• CPC Class Codes: B01D 2259/4575 in aeroplanes or space ships
• CPC Class Codes: B01D 45/16 generated by the winding course of the gas stream , the centrifugal forces being generated solely or partly by mechanical means, e.g. fixed swirl vanes
• 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: F02C 7/32 Arrangement, mounting, or driving, of auxiliaries
• 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

The present invention describes a jet engine with at least one oil separator, through which an air-oil volume flow can be guided out of at least one area supplied with oil for separating the oil. In accordance with the invention the air-oil volume flow from the area supplied with oil can be introduced into the oil separator via an interior of an accessory gearbox casing. The air can be discharged from the oil separator via an air outlet and the oil via an oil outlet.

Claims

1. A jet engine oil separation system, comprising:

an accessory gearbox including a casing and at least one gear pairing positioned in an interior of the casing,

an oil separator for separation of oil and air from an air-oil volume flow,

at least one line guiding the air-oil volume flow to the interior of the casing from at least one separate engine area supplied with oil,

at least one deflector provided in an area of the at least one gear pairing to shield the at least one gear pairing from the air-oil volume flow from the first line,

wherein the oil separator is positioned in a flow path of the air-oil volume flow downstream of the deflector to receive the air-oil volume flow from the interior of the casing,

an air outlet for discharging separated air from the oil separator,

an oil outlet for discharging separated oil from the oil separator.

2. The jet engine oil separation system in accordance with claim 1, wherein the oil separator includes a rotatable porous area arranged in the flow path of the air-oil volume flow.

3. The jet engine oil separation system in accordance with claim 2, and further comprising at least one deflection area provided in the flow path of the air-oil volume flow upstream of the porous area of the oil separator whereby at least part of the oil can be separated from the air-oil volume flow by centrifugal force.

4. The jet engine oil separation system in accordance with claim 2, and further comprising at least once centrifuge positioned upstream of the porous area of the oil separator in the flow path of the air-oil volume flow, whereby at least part of the oil can be separated from the air-oil volume flow by centrifugal force.

5. The jet engine in accordance with claim 4, wherein the at least one centrifuge is provided in an area of the oil separator.

6. The jet engine oil separation system in accordance with claim 1, wherein the at least one separate engine area supplied with oil includes a plurality of separate engine areas supplied with oil and the at least one line includes a plurality of lines guiding the air-oil volume flow to the interior of the casing from the plurality of separate engine areas supplied with oil to be in operative connection with the oil separator via the interior of the casing.

7. The jet engine oil separation system in accordance with claim 4, wherein at least one chosen from the oil separator, the deflector and the centrifuge is arranged at least partially inside the casing.

8. The jet engine oil separation system in accordance with claim 1, wherein the separate area supplied with oil is at least one chosen from an oil tank and a bearing chamber.

9. The jet engine oil separation system in accordance with claim 3, wherein the at least one deflection area is provided in an area of the oil separator.

10. The jet engine oil separation system in accordance with claim 4, wherein at least one chosen from the oil separator, the deflector and the centrifuge is arranged at least partially outside the casing.