Annular fuel and air co-flow premixer

摘要

Disclosed is a premixer (12) for a combustor (10) including an annular outer shell (14) and an annular inner shell (16). The inner shell (16) defines an inner flow channel inside of the inner shell (16) and is located to define an outer flow channel between the outer shell (14) and the inner shell (16). A fuel discharge annulus (46) is located between the outer flow channel and the inner flow channel and is configured to inject a fuel flow (42) into a mixing area (48) in a direction substantially parallel to an outer airflow (38) through the outer flow channel and an inner flow through the inner flow channel. Further disclosed are a combustor (10) including a plurality of premixers (12) and a method of premixing air and fuel in a combustor (10).