Solid fuel burner

Abstract

Slag ( 28 ) is formed during the combustion of solid fuels with a lower ash fusion temperature and covers parts of the solid fuel, prevents complete combustion and blocks the air supply, thereby leading to an interruption of the combustion process. According to the invention, the embers and the fusing ashes are mixed by means of a cleaning comb ( 22 ) and are discharged from the burner. The burner consists of rotating grate bars ( 25 ) which are arranged parallel to one another within the inner walls ( 1 ). The cleaning comb ( 22 ) moves between the grate bars ( 25 ); upwards between the grate bars ( 25 ); in direction of the burner opening; downwards under the grate bars; and finally in the direction of the burner flange ( 7 ). When the slag ( 28 ) adheres to the rotating grate bars ( 25 ), it is scraped off by the cleaning comb ( 22 ). The fuel supplied to a funnel ( 8 ) slides downwards by the force of gravity, the funnel lid ( 9 ) opens, and the fuel is pushed onto the grate bars ( 25 ) by the plunger ( 11 ). The plunger ( 11 ) has at least one opening ( 15 ) for secondary air ( 5 ) which also provides cooling. A blower ( 13 ) blows the ashes fallen through the grate bars ( 25 ) through a cut-out section in the burner floor ( 30 ) opened by the floor trap ( 20 ).

1 . burner parallel to each other for the combustion of solid fuels, in particular Pellets and wood chips, comprising at least two between the inner walls ( 1 ) of the torch in spaced arranged grate rods ( 25 ) formed in openings of a Brennerflanschs ( 7 ) and on a grate carrier ( 24 ) are mounted, characterized in that between the grate bars ( 25 ) makes a cleaning comb ( 22 ) following movement: upward through the grate bars ( 25 ), then, in the direction of the burner opening, then down under the grate bars, and last in the direction of the burner flange ( 7 ), wherein in a hopper ( 8 ) fuel slides by gravity downwardly open a hopper door ( 9 ) and by a piston ( 1   1 ) having at least one opening ( 15 ) for secondary air ( 5 ) for the cooling of the piston ( 1   1 ) and the Koibenkanals ( 12 ) provides, on the grate bars ( 25 ) is pushed, wherein on a burner base ( 30 ) under the grate bars fallen ( 25 ) ash, by a fan ( 13 ) is blown open by a bottom of slider ( 20 ) cutout in the burner base ( 30 ). 
     
     
         2 . Burner according to  claim 1 , characterized in that the grate bars ( 25 ) are mounted freely rotating, and adhering of the interaction of the to the grate bars ( 25 ) and the moving slag cleaning comb ( 22 ) are rotated. 
     
     
         3 . Burner according to  claim 1 , characterized in that the grate bars ( 25 ) are mounted rotatable and are rotated by means of drive. 
     
     
         4 . Burner according to one of  claims 1  to  3 , characterized in that the movement of the cleaning comb ( 22 ) is circular. 
     
     
         5 . Burner according to one of  claims 1  to  4 , characterized in that the cleaning comb ( 22 ) by an eccentric shaft ( 16 ) with two staggered about an axis of eccentric cams and a swing flap ( 18 ), swing axle is moved ( 19 ). 
     
     
         6 . Burner according to one of  claims 1  to  4 , characterized in that the cleaning comb ( 22 ) of two eccentric shafts ( 16 ) and ( 27 ) is moved. 
     
     
         7 . A burner according to any one of claims ( 1 ) to ( 6 ), characterized in that the funnel ( 8 ) has the shape of an inclined pyramid, the bottom has a larger opening than the top and arranged a receiving axis of the hopper flap ( 9 ) so that the hopper flap ( 9 ) comes to lie on a slide wall by its own weight, the sliding wall being at such angle that allows slipping of the fuel. 
     
     
         8 . Burner according to one of  claims 1  to  7 , characterized in that all moving parts under the grate bars ( 25 ) and/or between the inner walls ( 1 ) and outer walls ( 3 ) are in air-flow zones.
 Positions:  1  inner wall,  2  opening for secondary air,  3  outer wall,  4  burner cover,  5  secondary air,  6  flame detector (ZB photosensor),  7  Burner,  8  funnel,  9  hopper door,  10  burner hood,  11  Kolbe,  12  Kolbenkanai,  13  fan,  14  fan flap,  15  Luftöftnung in the Kolbe,  16  eccentric,  17  ignition unit,  18  pendulum flap,  19  swing axle,  20  Squeegee,  21  axis guide,  22  cleaning comb,  23  grate bar carrier,  24  Schließpiatie,  25  grate bar rotating primary air