Has anyone tried to replace the burnerplate with a ceramic perforated plate ? Like this little chinese gas stove Might be interesting
Instead of burnerplate of roarer burner, sitting/ontop in burnerbell a ceramic plate at same position closing bell off or maybe also supported. should work
In order to have any chance of working, the underside of the ceramic would have to be at the same height as the underside of the cast iron spreader plate in the burner bell. Otherwise the air-fuel mixture would be incorrect for proper combustion. The other issue is that the fuel leaves the jet in a stream focused on the centre- if the ceramic plate worked, the flames would be concentrated in the centre. As with a gas stove in the photo. There would probably not be enough heat transfer around the edges of the ceramic plate to keep the burner bell and vapouriser hot enough to keep vapourisation going. But unless you try it, you won't know for sure...!
I am not sure but I think these work more or less on the same principle as a pressure lantern where the burner heats the mantle that in turn glows white. One would need to inspect such a ceramic stove up close to see if there is a burner "hidden" under the ceramics.
@Wim I assumed they oprerated on the same principle as gas heaters where the fuel flows through a perforated ceramic plate?
The burner plates of little stoves are easily removed, 8r, svea123 etc. I guess you can think of it as a ceramic head like in the petromax pressure lanterns as you mentioned. The engineers back in the day might have tried the idea and tossed it aside of being useless and stupid in a stove. I'll give it a try with a small burner head of a small pressure lamp.
It needs the Hot plate. Here is result litlle experiment https://youtube.com/shorts/CzFoGGoo8lo?si=-La4IWgFGJCZLdct
It is sitting too low in the burner bell for clean combustion. The volume of the burner bell affects the fuel/air mix. The bottom of the ceramic piece needs to sit at approximately the same height as the bottom of the flame spreader plate.
It was just a quick " what will happen" . For sure you are right. When i get an old burnerplate I can drill a hole in it, or make a support.
An interesting experiment though! Did you run it for long enough to be sure it would keep the burner hot enough to carry on vapourising?
It is isnt it ! No, I closed it off after I saw a big Bunsen burner flame. If the correct distance/fuel airmixture is archieved it should work. In my 500cp petromax I burn without a mantle into a heating radiator. The flames that come out of the ceramic made me think. Like this:
I could make a riser instead of the jet, ( jet indeed focusses to centre ) connect the Petromax gaschamber with ceramic attached . Only oxigen flow is an issue. In petromax lamp there is an opening before the gaschamber that mixes oxigen and fuel. The opening is quitte precise. My goal was to make a simple silent burner from it. Doesnt seem so simple after all I think it wont heat up the bell enough for inducing pressure after a while. Maybe A burner with a pump however
Steam model afficianados sometime use ceramic gas burners so it could be worth looking up design details for those.
Yes, they're very simple- a chamber for the fuel/air mix with a piece of perforated ceramic tile on top. Sometimes stainless steel scourer type material is used instead of an empty chamber in an attempt to spread the air/fuel mixture more evenly through the perforated ceramic. Countless 'how to' articles on the internet, a clear one is here. Not a million miles from what is happening in the burner bell of a stove. However, with liquid fuels, thermal feedback for vapourisation is required.....
