公开(公告)号：US5592819A

公开(公告)日：1997-01-14

申请号：US400574

申请日：1995-03-08

申请人： Denis R. H. Ansart ,  Patrice A. Commaret ,  Etienne S. R. David ,  Michel A. A. Desaulty ,  Bruno M. M. Quinquenneau ,  Denis Sandelis

发明人： Denis R. H. Ansart ,  Patrice A. Commaret ,  Etienne S. R. David ,  Michel A. A. Desaulty ,  Bruno M. M. Quinquenneau ,  Denis Sandelis

IPC分类号： F23R3/12 ,  F23R3/28 ,  F23R3/30 ,  F23R3/32 ,  F23R3/34

CPC分类号： F23R3/12 ,  F23R3/286 ,  F23R3/32 ,  Y02T50/675

摘要： A pre-mixing injection system to feed a fuel/air mixture to a combustion zone in a turbojet engine combustion chamber is disclosed having a pre-mixing tube defining a convergent pre-mixing zone and a diverging intermediate zone between the fuel and air injection devices, and the combustion zone of the combustion chamber. The convergent pre-mixing zone has an inlet adjacent to the fuel injector and air swirlers to accept the fuel/air mixture into the pre-mixing tube. The pre-mixing zone converges in a direction from the inlet to an outlet which is in communication with the inlet of the divergent intermediate zone. The divergent intermediate zone has an outlet which is, in turn, in communication with the combustion zone of the turbojet engine combustion chamber. The divergent intermediate zone is defined by an inner wall and an outer wall spaced from the inner wall so as to define a generally frusto-conical chamber between them. The outer wall has a plurality of cooling holes to enable cooling air to pass through the outer wall into cooling contact with the inner wall. The frusto-conical chamber has a downstream evacuation passage to allow cooling air to pass from the frusto-conical chamber.

摘要翻译： 公开了一种用于将燃料/空气混合物供给到涡轮喷气发动机燃烧室中的燃烧区域的预混合喷射系统，其具有限定会聚预混合区域的预混合管和燃料和空气喷射装置之间的发散中间区域 和燃烧室的燃烧区域。 会聚预混合区域具有与燃料喷射器相邻的入口和空气旋流器以将燃料/空气混合物接收到预混合管中。 预混合区在从入口到与发散中间区的入口连通的出口的方向会聚。 发散中间区域具有出口，该出口又与涡轮喷气发动机燃烧室的燃烧区域连通。 发散中间区由内壁和与内壁隔开的外壁限定，以便在它们之间限定一个大致截头圆锥形的室。 外壁具有多个冷却孔，以使冷却空气能够通过外壁与内壁冷却接触。 截头圆锥室具有下游排气通道，以允许冷却空气从截头圆锥室通过。