| 摘要 |
A swirler 100 includes a body defining a diverging upstream surface 102 and a longitudinal axis 'A'. The body is broader at its downstream end than at the upstream end. A plurality of swirl vanes 104 extend from the diverging upstream surface. The swirl vanes are angled to impart swirl around the longitudinal axis on a fluid flowing over the diverging upstream surface. An airblast injector is also claimed and includes the swirler and a nozzle body 202 defining an air passage along the longitudinal axis with a diverging outlet 206. The swirler is operatively associated with the diverging outlet. An annular swirler outlet area 212 can be defined between downstream ends of the swirler and the diverging outlet. A throat area 216 can be defined in an air passage 204 upstream of the diverging outlet, whereby the swirler outlet area is greater than the throat area. |
