This realisation might interest some people.
The masonry of the accumulator contains about 120 firebricks(5cmx10cmx20cm) a total weight of 250-300 kg.
The pics will make things clear.
A view of the stove + accumulator + about 3m iron pipe.
A view from the side where you see the handle for opening and close the draft directly.
It's half opened here for visibility.It have to be opened when the masonry is completely cold.I nearly never have to open it because I light the fire every day and there is allways a bit heat left in the bricks,enough draft to start the fire without opening it.
This is the trap I made for cleaning the inside.I have to move the stove to have acces to it.I admid I didn't do it yet for 4 winters.I didn't notice a diminition of draft yet.Some times I try to light a chimnyfire for cleaning things up.To do this I make big flames in the stove when the bricks are hot and open the door from the stove.I didn't succeed yet,so it's ok.My stove makes very little creosote.After this winter I sure have to clean everything up though.
(disclaimer:don't try to clean your chimney this way.sweep it regularly instead.if you burn down your house following my exemple don't blame me)
The drawings are ment to be self explaining.They are not very clear but anyway the dimensions have to be adapted to the needs,depending the bricks,the diam of the pipe,etc
advantages:the heat from the exhaustgasses from the stove are partially recuperated and dissipated over a long period.Good for efficiency and for spreading out some of the heat over time.The downward draft in the frontchannel creates much turbulence and greatly improves heat exchange between the gasses and the bricks compared to an upward only chimney.
I have to show my stove too,I think it's very sophisticated.
The ashes are falling through holes that can be opend and closed.So you can choose to keep the ashes by closing,good for keeping the coals hot when you turn down the fire
or to open for starting up.You can regulate the draft coming through the holes with another handle
Here you see the small holes for preheated air above the fire and the opening ffor preheated air coming down in the front creating turbulence and cleaning the window.
There is a saperate handle for the air through this last hole.The small holes have a saparate air inlet on the back but there is no handle to regulate it.Maybe the manuffacturer thought this would be a handle too much.I blocked this opening patially with a piece of alufoil,because the small holes were blowing too strong.Some day I'll make a fourth handle for it on the stove.
The long winternight you can play with the handles and create some nice flames.So much better then television.
I'm so happy with my stove and heataccumulator,and so is my cat
cheers,
stonebrain
