Purge configuration for combustor mixing assembly

A mixing assembly for a combustor includes a pilot mixer including a pilot housing and a pilot fuel nozzle extending along a mixer centerline; a main mixer surrounding the pilot mixer; a fuel manifold between the pilot mixer and the main mixer; a mixer base extending from the main housing of the main mixer; a main swirler body surrounding the main housing, a mixing conduit being defined between the main housing and the main swirler body; and a main fuel ring connected to the main housing through a main fuel vane in the mixing conduit, at least one of the main fuel ring and the main fuel vane including fuel injection ports for discharging fuel into the mixing conduit, where the fuel injection ports are non-uniformly disposed with respect to the mixer centerline, the main fuel ring is disposed so as to generate a static pressure difference therebetween in response to mixer airflow passing around the main fuel ring. 一种用于燃烧器的混合组件，包括：包括沿混合器中心线延伸的先导壳体和先导燃料喷嘴的先导混合器；包围先导混合器的主混合器；在先导混合器和主混合器之间的燃料歧管；从主混合器的主壳体延伸的混合器底座；主