公开(公告)号：US20230358405A1

公开(公告)日：2023-11-09

申请号：US18168912

申请日：2023-02-14

Applicant: ROLLS-ROYCE plc

Inventor： Jonathan KNAPTON ,  Nicholas M. BROWN

IPC: F23R3/28 ,  F02C7/22

CPC classification number: F23R3/286 ,  F02C7/222

Abstract: A fuel spray nozzle includes a fuel circuit having in series a gallery, circumferentially spaced passages arranged in a row around the nozzle, and an annular spin chamber. Each passage has an inlet for receiving a respective portion of the fuel from the gallery and a metering orifice for discharging its portion of the fuel. The passages are configured such that, when the flow of liquid fuel to the inlet port is shut off, a respective differential static pressure develops across stagnant liquid fuel remaining between the inlet and the metering orifice of each passage, and the passages are further configured such that one or more selected passages develop a different differential static pressure to the remaining passages causing a flow of purging air to enter the gallery from the combustor through the selected passages and exit through the remaining passages, thereby purging the gallery and the passages of fuel.

公开(公告)号：US20200378603A1

公开(公告)日：2020-12-03

申请号：US16878927

申请日：2020-05-20

Applicant: ROLLS-ROYCE plc

Inventor： Luca TENTORIO ,  Juan Carlos ROMAN CASADO ,  Giacomo DI CHIARO ,  Jonathan KNAPTON ,  Filippo ZAMBON ,  Radu IRIMIA

IPC: F23R3/28 ,  B05B15/62 ,  B05B1/34

Abstract: A fuel spray nozzle arrangement for a combustor, the fuel spray nozzle arrangement comprising a fuel spray nozzle connected to a feed arm, wherein the feed arm comprises an aerofoil.