公开(公告)号：US20230392565A1

公开(公告)日：2023-12-07

申请号：US18173175

申请日：2023-02-23

Applicant: Aero Engine Academy of China

Inventor： Shiqi WANG ,  Quan WEN ,  Xiao HAN

IPC: F02K3/10 ,  F23R3/20

CPC classification number: F02K3/10 ,  F23R3/20 ,  F05D2240/36

Abstract: The present disclosure provides an afterburner structure with fuel injection nozzles. In the condition of a stable inlet flow, the present disclosure forms a sweeping oscillating jet with a certain frequency at the outlet under an alternate feedback action of a feedback channel and the fluid's Coanda effect, so that the spatial uniformity of the fuel injection is improved; Therefore, without increasing the structural complexity of current afterburner of the turbo-engine and the combustion chamber of the subsonic combustion ramjet, the atomization performance and the uniformity of the oil-gas mixture in the afterburner/combustion chamber of the ramjet can be greatly improved, the combustion efficiency and combustion instability of the engine can be improved and meanwhile the length of the afterburner and the combustion chamber of the subsonic combustion ramjet is shortened.

公开(公告)号：US20240328626A1

公开(公告)日：2024-10-03

申请号：US18541041

申请日：2023-12-15

Applicant: AERO ENGINE ACADEMY OF CHINA

Inventor： Shiqi WANG ,  Quan WEN ,  Xiao HAN ,  Qian YANG

IPC: F23R3/38 ,  F23R3/14

CPC classification number: F23R3/346 ,  F23R3/14 ,  F23R3/286 ,  F23R3/38

Abstract: The present disclosure provides a central staged combustion chamber with self-excited sweeping oscillating fuel injection nozzles, including an outer housing with a cavity inside, a main stage coaxially disposed with the outer housing, and a pilot stage coaxially disposed with the outer housing. An annular fuel passage is used for connecting a plurality of self-excited sweeping oscillating fuel injection nozzles, and the self-excited sweeping oscillating fuel injection nozzles are suitable for injecting oscillating liquid fuel into a primary swirling passage. The fuel is output in a fan shape through each of the self-excited sweeping oscillating fuel injection nozzles and is dispersed by an incoming flow through the swirling passage, so that the atomization performance and spatial distribution uniformity of the fuel can be greatly improved.