extraction fan causing flame movement

[mel]

Hi
I've just fitted a good extraction fan with a tin bucket end as the opening but the flame moves around quite a bit, presumably there is some sort of vortex going on. Any ideas how to stop this, it's a tad more than very irritating...

[Krysia@No98]

Maybe it's a bit close to the flame. 

Have you got a picture you can show us?

[Steampunkglass]

Have you tried using the smoke from an incense stick? That way you can move it around and maybe see where it is and isn't taking the smoke?

[mel]

Thanks, it is quite close to the flame, I'll take a piccy and post at some point this week.