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.

公开(公告)号：US10704517B2

公开(公告)日：2020-07-07

申请号：US15837446

申请日：2017-12-11

Applicant: ROLLS-ROYCE plc

Inventor： David P. Wilson ,  John E. Rimmer ,  Jochen Rupp ,  Damian Martin ,  Emmanuel V. Aurifeille ,  Kyriakoulis L. Resvanis ,  Michael J. Allitt

IPC: F02M61/14 ,  F23R3/28 ,  F23R3/00 ,  F23R3/50

Abstract: A combustion chamber comprising an upstream end wall, at least one annular wall, at least one fuel injector and at least one seal. The at least one annular wall being secured to the upstream end wall. The upstream end wall having at least one aperture. Each fuel injector being arranged in a corresponding one of the apertures in the upstream end wall and each seal being arranged in a corresponding one of the apertures in the upstream end wall and around the corresponding one of the fuel injectors. Each seal having an inner surface facing the corresponding one of the fuel injectors and an outer surface facing away from the corresponding one of the fuel injectors. Each seal abutting the corresponding one of the fuel injectors. The downstream end of each seal increasing in diameter in a downstream direction and the upstream end of each seal having a radially extending flange. Each seal having a plurality of coolant apertures extending axially through the radially extending flange and/or each seal having a plurality of thermal conductors extending axially from the radially extending flange to the downstream end of the seal.