公开(公告)号：US11085643B2

公开(公告)日：2021-08-10

申请号：US16254705

申请日：2019-01-23

Applicant: ROLLS-ROYCE plc

Inventor： Richard Freeman ,  Christopher Rafferty ,  Thomas Jones ,  Matthew Murphy ,  Nicholas M. Brown

IPC: F23R3/14 ,  F23R3/28 ,  F23D14/00 ,  F23R3/10 ,  F23D11/00 ,  F23D11/38 ,  F23C7/00 ,  F23M5/08 ,  B33Y10/00 ,  B33Y80/00 ,  B29C64/153 ,  B01F5/00 ,  B01F15/00 ,  F23R3/46

Abstract: An air swirler arrangement comprises a coaxial arrangement of an inner and an outer air swirler passage. Each air swirler passage comprises a radial flow swirler. Air swirler arrangement comprises a coaxial arrangement of first, second and third members. Second member has radially extending upstream portion spaced axially from first member and a convergent portion. Third member has a radially extending upstream portion spaced axially from the upstream portion of second member and a radially inner surface having convergent and divergent downstream portions and a radially outer surface having a divergent downstream portion. First, second and third members the vanes of the radial flow swirlers is a monolithic structure. Plurality of circumferentially spaced passages are provided within the third member and each passage has an inlet in the surface and an outlet arranged to direct fluid onto the divergent portion of the surface or the surface of the third member.

公开(公告)号：US10712008B2

公开(公告)日：2020-07-14

申请号：US15723592

申请日：2017-10-03

Applicant: ROLLS-ROYCE plc

Inventor： Emmanuel V. Aurifeille ,  Nicholas M. Brown ,  Murthy V V S Ravikanti

IPC: F23R3/28 ,  F23R3/60 ,  F02C7/28 ,  F23R3/12 ,  F23R3/50

Abstract: A combustion chamber comprises an upstream end wall, at least one fuel injector and at least one seal. Each fuel injector is arranged in a corresponding aperture in the wall. Each seal is arranged in a one of the apertures in the wall and around one of the fuel injectors. Each seal has a first portion, a second portion and a third portion. The second portion abuts the corresponding fuel injector. The third portion is arranged at the downstream end of the seal and increases in diameter in a downstream direction. The first portion is arranged upstream of the second portion and has a plurality of coolant apertures extending there-through. The coolant apertures extend through the first portion with axial, radial and tangential components. The seals produce better mixing between the coolant and the fuel and air mixture from the fuel injectors to reduce emissions produced in the combustion chamber.