FURNACE FUEL COMBUSTION METHOD, AND FURNACE FOR IMPLEMENTATION OF ABOVE SAID METHOD Russian patent published in 2014 - IPC F24B1/00 

FIELD: heating.

SUBSTANCE: method of fuel combustion in a furnace, preferably a domestic one containing a housing with a door with an observation glass for fuel loading, in which there are channels for air supply to the combustion chamber with a combustion zone, channels for removal of fuel combustion products from the combustion chamber, a stack for removal of combustion products, consists in laying of fuel in the furnace combustion zone with further fuel ignition, its burning with heat emission, obtaining immediately combustion products themselves with further extraction of heat from combustion products by their warm-up of heating elements of the furnace and removal of the above combustion products through the stack; with that, in the furnace door frame there installed is a panel, by means of which cross-section of the frame is divided at least into two parts; with that, an upper cavity formed with the frame and the above panel is connected to the combustion zone and used for laying of fuel, mainly firewood, and the lower one is connected to the combustion zone, thus forming the main channel for air supply to the combustion zone; with that, a gap is formed by means of the above panel together with the observation glass, where the above gap serves as the first channel for air supply to the combustion zone from the cavity of the main channel. On the other panel end opposite to the above channel, preferably at the point of its attachment to the furnace housing, there made are through channels, by means of which the cavity of the main air supply channel is connected to the combustion zone so that the second air supply channel to the combustion zone is formed. With that, the third air supply channel to the combustion zone is made in the lower part of the furnace. The cavity of the above channel is connected on one side to the cavity of the main air supply channel and on the other to lower part of the combustion zone cavity, preferably via channels at the fuel laying bottom; with that, fuel is laid in the furnace combustion zone so that a gap is formed, preferably a guaranteed one, between fuel and combustion zone walls, at least on one side, preferably two, which are opposite located, there ignited is upper part of formed fuel volume, with that, at the initial time interval for air supply to the combustion zone there preferably used is the first channel; the first and the second channels are mainly used at burning-out of the fuel to the specified level, preferably half of the fuel level, and the third channel is preferably used at completion of the burning process. The obtained main flow of combustion products is divided at least into two additional intermediate flows by installing on the way of the above main flow of a profiled screen with openings, preferably in its peripheral zone, and the obtained additional intermediate flows are directed through the above openings to furnace walls; after that, mainly each additional intermediate flow is turned and passed along the furnace walls in its part located in close proximity to the tube. Additional intermediate flows, preferably all of them, are turned at least once towards each other and each flow obtains rotational movement, preferably along the spiral; then, additional intermediate rotating flows are mixed between themselves and the formed main rotating flow is directed to the stack. Besides, a furnace for implementation of the above method is described.

EFFECT: simpler furnace design; improvement of operating reliability; improvement of fuel combustion completeness; improvement of heat output and increase of furnace operation time at unchanged fuel consumption.

16 cl, 5 dwg