Solid fuel stove with improved combustion

Abstract

The invention relates to a solid fuel stove comprising a combustion chamber ( 12 ) for containing combustion fuel and a blower assembly ( 50 ) configured to provide airflow entering the combustion chamber in operating condition. When guiding means ( 40 ) establish airflow entering the combustion chamber substantially in a downwardly direction the combustion process of the stove is very clean and efficient.

1 . Solid fuel stove ( 10 ) comprising:
 a combustion chamber ( 12 ) for containing combustion fuel, which chamber has a lower side portion ( 17 ) for accommodating fuel and an upper side portion ( 15 );   a blower assembly ( 50 ) configured to provide airflow entering the combustion chamber in operating condition;   guiding means ( 40 ) to direct the airflow into the combustion chamber;   wherein the guiding means ( 40 ) direct the airflow from the upper side portion to the lower side portion.   
     
     
         2 . Stove ( 10 ) as claimed in  claim 1 , wherein the guiding means ( 40 ) comprise a plurality of apertures ( 23 ) provided in a wall ( 21 ) of the combustion chamber ( 12 ) at the upper side portion ( 15 ). 
     
     
         3 . Stove ( 10 ) as claimed in  claim 2 , wherein the upper edge ( 61 ) of an aperture is inclined inwardly with relation to the combustion chamber ( 12 ) and a lower edge ( 63 ) of an aperture is inclined outwardly with relation to the combustion chamber. 
     
     
         4 . Stove ( 10 ) as claimed in  claim 2 , wherein the apertures ( 23 ) comprise drilling holes having an inclined pitch with relation to the wall ( 21 ). 
     
     
         5 . Stove ( 10 ) as claimed in  claim 2 , wherein the apertures ( 23 ) are substantially evenly distributed along the contour of the combustion chamber. 
     
     
         6 . Stove ( 10 ) as claimed in  claim 2 , wherein each aperture ( 23 ) is disposed at a distance from the upper side portion. 
     
     
         7 . Stove ( 10 ) as claimed in  claim 1 , wherein the guiding means ( 40 ) establish airflow at the lower side portion of the combustion chamber. 
     
     
         8 . Stove ( 10 ) as claimed in  claim 7 , wherein the guiding means ( 40 ) comprises a plurality of apertures ( 22 ) at the lower side portion ( 17 ) of the combustion chamber ( 12 ). 
     
     
         9 . Stove ( 10 ) as claimed in  claim 1 , wherein a preheat chamber ( 18 ) disposed around the combustion chamber, which preheat chamber provides air flow communication from the blower assembly into the combustion chamber and comprises an air distributor ( 24 ) including heat reflectors ( 14   a ) adapted to reflect heat radiated from the combustion chamber ( 12 ) back towards the combustion chamber. 
     
     
         10 . Stove ( 10 ) as claimed in  claim 1 , wherein a rechargeable electrical power source for driving the blower assembly and a thermoelectric element ( 31 ) are provided, and wherein the thermoelectric element is configured to provide power to the blower assembly and to the rechargeable power source. 
     
     
         11 . Stove ( 10 ) as claimed in  claim 1 , wherein the blower assembly ( 50 ) comprises a DC brushless motor ( 52 ) and an impeller ( 53 ) coupled thereto. 
     
     
         12 . Stove ( 10 ) as claimed in  claim 1 , wherein an electronic control unit ( 33 ) is provided, which unit is adapted to supply variable driving power to the blower assembly ( 50 ) to control the combustion temperature in the stove.