It strikes me that he's basically patented a supersized version of the hotplate-based tornado generator I built in 6th grade- based on one I saw at the local science museum. I haven't read the specifics of the patent(s) as it's too early in the morning for that sort of thing, but I wonder how much of the whole thing would stand up to prior art claims.

His deflectors will generate a spin in the wrong direction for here. The vortex will be unstable and break up.

I have to agree with araquan; it looks a lot like a large tornado generator. Questacon in Canberra has had one for many years.