Propane Effect Ignition Point

[djdan]

Hey Everyone,

 

I have built a propane fueled pyro effect system that uses hot surface ignitors for ignition and it works well. However, like in any fuel system, the ignitor cannot be placed directly after the outlet nozzle because air needs to mix with the fuel so it can ignite. In my system the ignitor needs to be placed about 10 inches above the outlet and about 2 off center. Works great.

 

However, I would like to be able to place the ignitor closer to the nozzle. I have seen professional systems where the flame is ignited virtually right next to the nozzle. But I haven't been able to study them, just seen exterior pictures.

 

I was wondering if there is an accepted way to do this? Basically is there a generally used way to get the propane and air to be mixed properly at the exit of the effect nozzle?

 

Thanks so much

Edited January 2, 2014 by djdan

[Bobosan]

I'm certainly no expert here but I keep thinking a pilot light arrangement with a furnace burner type air mixture shutter. Think propane torch head or a flamethrower.

Edited January 2, 2014 by Bobosan

[Mortartube]

This may be of help to you. This was made by a company that I work with and contains some close ups of the propane setup.

Edited January 3, 2014 by Mortartube