公开(公告)号：US20180195726A1

公开(公告)日：2018-07-12

申请号：US15862724

申请日：2018-01-05

Applicant: ROLLS-ROYCE plc

Inventor： Frederic WITHAM ,  Steven BALLANTYNE ,  Jonathan M. GREGORY ,  Mike OJ CARUSO ,  Stephen C. HARDING

IPC: F23R3/28 ,  F23R3/38 ,  F23R3/34 ,  F23R3/20 ,  F23R3/14 ,  F02C7/22 ,  F23D11/38 ,  F23D11/10 ,  F02C9/28

Abstract: A fuel injector comprises an elongate fuel passage (31) having an elongate axis (31a) extending from an upstream inlet end to a downstream outlet end. A plurality of outlets (33) is arranged at the outlet end, each outlet extends obliquely with respect to the elongate axis (31a). The elongate fuel passage is defined by an inner skin of a double skinned pipe, the double skinned pipe defines a first annular cavity (34) between the inner skin and an outer skin. The inner skin and the outer skin meet adjacently upstream of the one or more outlets to close an end of the first annular cavity (34). The injector has a nose section (32) at a downstream end, the nose section (32) being convergent and fluted. The flutes (38) are arranged between the outlets (33) and extend towards the downstream end of the nose section (32) whereby to guide an air stream (A) passing over the injector (30) to form single jet at the downstream end of the nose section (32).

公开(公告)号：US20180195728A1

公开(公告)日：2018-07-12

申请号：US15862780

申请日：2018-01-05

Applicant: ROLLS-ROYCE plc

Inventor： Mike OJ CARUSO ,  Frederic WITHAM ,  Jonathan M. GREGORY ,  Steven BALLANTYNE ,  James W. MONTGOMERY

IPC: F23R3/28 ,  F23R3/38 ,  F23R3/34 ,  F23R3/20 ,  F02C7/22 ,  F23D11/38 ,  F23D11/10 ,  F02C9/28 ,  F23R3/14

CPC classification number: F23R3/286 ,  F02C7/222 ,  F02C9/28 ,  F23D11/107 ,  F23D11/383 ,  F23D2900/11101 ,  F23R3/14 ,  F23R3/20 ,  F23R3/283 ,  F23R3/30 ,  F23R3/343 ,  F23R3/38

Abstract: A fuel injector comprises one or more elongate fuel passages (802) having an elongate axis extending from an upstream inlet end to a downstream outlet end. One or more outlets (803) are provided at the outlet end and extend obliquely with respect to the elongate axis. The elongate fuel passage is defined by an inner skin of a double skinned pipe, the double skinned pipe defining a first annular cavity (804) between the inner skin and outer skin. The inner skin and the outer skin converge adjacent the one or more outlets (803) to form a nose (808). A bridge is arranged within the fuel passage (802) and upstream of the nose (808), the bridge comprising a plurality of arms (811) extending radially from a centre (812) to a wall of the fuel passage (802), the centre (812) arranged in axial alignment with a centre of the nose (808).