[Stoves] Malot-blower

[Boll, Martin Dr.]

Malot blower: Here theme-branched to / intermediate reflux of burning gasses

 

Frank,

You think of the action of a propeller-type fan. Thereby the draft moves in
different directions, when driven by a bow. But this works one to one in
each direction. -But that is originally not my intention. I t is simply to
blow in one direction.

I don't think, it would be possible to drive such a "propeller"-fan with a
bow so fast, to get a usable blow. Out of that reason the Malot-blower is a
radial-blower, with the effect, that it blows always from axle to peripheral
area. Mostly that is good, but you do not want this.

So the new idea you have, inverting the draft in a T-LUD for a short time
will not work in the sense you thought.

 

But there are two basic different  methods to get nearly the draft-inverting
as you think:

1. If you block for a short time the off-gas of the T-LUD, the creating
process of burning gasses goes on. But if the way upwards is blocked, the
gasses steam downward, that is nearly what you want to reach.

 

2. If you take a radial-rotor, which is heat-resistant, e.g. the malot-rotor
made of tubes and sheet-metal, you can put it into a tube of which the
bottom is closed. The rotor sucks then from the shaft-near area (in this
case from above) and blows to the periphery of the rotor. By this you can
get a suction downward through the grate and a blow upward through the
peripheral gap between the burning chamber and the outer wall, in direction
of the secondary-holes/jets. In the time, when the rotor is not moved, there
is normal natural draft.

I think, between the central (sucking-) area and the peripheral (blowing-)
area, it will be best to separate by a metal-circle-plate with a central
hole. This central hole must not be too big, but big enough to get the
desired suck. 

3. _If !!_ that would work, you could try to make a central hole on the
downside as well, which can be closed, but from size a lot bigger.

            When the hole on the bottom is open, the suction from down is
more easy (more effective), and the suction from above (trough the grate) is
possible not big enough to invert the natural upward draft-direction. When
the bottom-hole is open, the suction of fresh-air is bigger.Then you have
the normal T-LUD function with some secondary-air-blow.

4. Possibly another idea will work better: If you would take on the same
shaft two (connected) rotors, separated by a sheet-metal, into an upper and
under section, the upper rotor served for the suction from above, and the
lower rotor served for the suction of fresh air from under. There must be
two slide-shutters one closing the centre against the grate and the other
between the two rotors. One of the shutters must be closed while the other
must be open.

 

Before creating complicated mechanisms, it would be helpful to know, if
tidal reverse air-flow would better the burn of a T-LUD. That would spare a
lot of work.

 

Regards

Martin