Radial vane inner air swirlers
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United States of America Patent
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Nov 8, 2016
Grant Date -
Apr 17, 2014
app pub date -
Oct 17, 2012
filing date -
Oct 17, 2012
priority date (Note) -
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Abstract
A swirler includes a swirler body defining a diverging upstream surface defining a longitudinal axis and a plurality of swirl vanes extending from the diverging upstream surface. The swirl vanes are angled to impart swirl around the longitudinal axis on a fluid flow over the diverging upstream surface. An airblast injector includes a swirler as described above, and a nozzle body defining an air passage therethrough along the longitudinal axis with a diverging outlet. The swirler is operatively associated with a diverging outlet of the nozzle body. An annular swirler outlet area can be defined between downstream ends of the swirler and diverging outlet of the air passage. A throat area can be defined in the air passage upstream of the diverging outlet thereof. The swirler outlet area can be greater than the throat area.
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