公开(公告)号：US20150300630A1

公开(公告)日：2015-10-22

申请号：US14441098

申请日：2013-11-07

Applicant: EXPONENTIAL TECHNOLOGIES, INC.

Inventor： Alejandro Juan

IPC: F23C3/00

CPC classification number: F23C3/006 ,  F23C3/00 ,  F23C15/00 ,  F23R7/00

Abstract: A pressure gain combustor comprises a detonation chamber, a pre-combustion chamber, an oxidant swirl generator, an expansion-deflection (E-D) nozzle, and an ignition source. The detonation chamber has an upstream intake end and a downstream discharge end, and is configured to allow a supersonic combustion event to propagate therethrough. The pre-combustion chamber has a downstream end in fluid communication with the detonation chamber intake end, an upstream end in communication with a fuel delivery pathway, and a circumferential perimeter between the upstream and downstream ends with an annular opening in communication with an annular oxidant delivery pathway. The oxidant swirl generator is located in the oxidant delivery pathway and comprises vanes configured to cause oxidant flowing past the vanes to flow tangentially into the pre-combustion chamber thereby creating a high swirl velocity zone around the annular opening and a low swirl velocity zone in a central portion of the pre-combustion chamber. The E-D nozzle is positioned in between the pre-combustion chamber and detonation chamber and provides a diffusive fluid pathway therebetween. The ignition source is in communication with the low swirl velocity zone of the pre-combustion chamber. This configuration is expected to provide a combustor with a relatively low total run-up DDT distance and time, thereby enabling high operating frequencies and corresponding high combustor performance.

Abstract translation: 压力增益燃烧器包括爆轰室，预燃室，氧化剂涡流发生器，膨胀偏转（E-D）喷嘴和点火源。 爆震室具有上游进气端和下游排出端，并且构造成允许超音速燃烧事件从其中传播。 预燃室具有与引爆室进气端流体连通的下游端，与燃料输送通道连通的上游端，以及在上游和下游端之间的周向周边，其环形开口与环形氧化剂连通 输送途径。 氧化剂涡流发生器位于氧化剂输送路径中，并且包括叶片，其被配置成使氧化剂流过叶片流切向地流入预燃烧室，从而在环形开口周围形成高旋涡速度区， 预燃室的中心部分。 E-D喷嘴位于预燃室和爆震室之间，并在其间提供扩散流体通路。 点火源与预燃室的低旋涡速度区域连通。 预期这种配置将提供具有相对低的总起动DDT距离和时间的燃烧器，从而实现高工作频率和相应的高燃烧室性能。