公开(公告)号：US10677467B2

公开(公告)日：2020-06-09

申请号：US15245035

申请日：2016-08-23

Applicant: ROLLS-ROYCE plc

Inventor： Frederic Witham ,  Pierre Hilt ,  Steven P. Jones ,  Jonathan M. Gregory ,  Timothy Minchin

IPC: F23R3/14 ,  F23R3/58 ,  F23R3/28 ,  F02C3/04

Abstract: An annular air swirler configured to receive a fuel injector in a central bore. The swirler has one or more annular channels, defined by radially facing channel walls and having an inlet for receiving compressed air and an axially distal outlet. The channel walls converge inwardly towards the outlet and swirl vanes extend between opposing faces of the walls. The swirler turns incoming air to create a vortex at the channel outlet. An annular cooling apparatus associated with the air swirler is arranged axially adjacently downstream of the channel outlet(s), and includes a skirt portion radially spaced from a converging portion of the outermost channel wall defining a converging portion of a bowed coolant channel. A radially outwardly extending wall connects with the outermost channel wall and, with a face of the skirt portion, defines a radially outwardly extending portion of the bowed coolant channel adapted for increased heat exchange.