Anet E12 extruder fan vent

Having some test prints on my Anet E12 I found some warping effects on the opposite side of where the fan was blowing to the nozzle.
I did not find any radial vents in Thingiverse (for the custom fan) so I tried coming up with one. I started with reusing some ring shape (step file) from the ender version but soon realized (for me) that there should be more air and a second mounting to it (see stl).
This is my 3rd interation and I did a few printing days with this one already - as well as some