STACKABLE AIR SWIRLERS
A swirler includes an inner body defining a swirl axis. A plurality of swirl vanes extend outward from the inner body. The swirl vanes define respective swirl slots therebetween for imparting swirl on a fluid passing through the swirl slots. A method of making swirlers includes additively manufacturing a stack of swirlers.
1 . A swirler comprising:
an inner body defining a swirl axis; and
a plurality of swirl vanes extending outward from the inner body, wherein the swirl vanes define respective swirl slots therebetween for imparting swirl on a fluid passing through the swirl slots.
2 . The swirler as recited in claim 1 , wherein the inner body follows a first cone angle that diverges in a downstream direction along the swirl axis, wherein the swirl vanes define a frustoconical volume that follows a second cone angle that converges in the downstream direction.
3 . The swirler as recited in claim 1 , wherein the swirl slots and swirl vanes are oriented tangential to the swirl axis.
4 . The swirler as recited in claim 1 , further comprising an outer ring connected to the swirl vanes and providing an outward boundary to the swirl slots.
5 . The swirler as recited in claim 1 , wherein the inner body has a constant wall thickness.
6 . The swirler as recited in claim 1 , wherein the inner body defines a plurality of cooling holes therethrough inboard of the swirl slots.