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

FIELD: heating.

SUBSTANCE: combustion method of fuel, and preferably wood, in a furnace containing at least a vertically oriented housing in which there are air supply channels to combustion zone formed mainly with furnace walls and bottom for fuel laying, an exhaust pipe, a door with an inspection glass, which is installed mainly in the frame on the housing, consists in fuel laying in furnace combustion zone with further air supply and ignition. A panel by means of which flow cross-section of the frame is divided at least into two parts is installed in the furnace door frame. Upper cavity formed with the frame and the above panel is connected to the combustion zone and used for wood laying, and lower cavity is connected to the combustion zone, thus forming the main air supply channel to the combustion zone. A gap serving as the first air supply channel to the combustion zone from the main channel cavity is formed by means of the above panel with the inspection glass. 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. The third air supply passage to combustion zone is made in the lower furnace part. Cavity of the above passage is connected on one side to the cavity of the main air supply passage and on the other side to lower part of cavity of combustion zone, preferably through passages at the fuel laying bottom. At initial instant for air supply to combustion zone there preferably used is the first passage, at burn-out of fuel column to the specified level, preferably to the half, there used is the first and the second passages, and when combustion process is completed, the third passage is mainly used. Besides, a furnace for implementation of the above method is described.

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

2 cl, 1 dwg