Catalytic unit for solid fuel burning stoves

Abstract

This invention describes a stove comprising a combustion chamber and a flue for removing exhaust from said combustion chamber, where said combustion chamber and said flue are connected via a passageway; said combustion chamber comprising a top and a bottom, where said top and said bottom are connected by one or more sides; a catalytic unit arranged between said combustion chamber and said flue in said passageway; said catalytic unit provides a guide way for the exhaust, where said catalytic unit comprises at least one isolating members and at least one catalytic member, said catalytic member comprising a first wave-like structure, said first wave-like structure being provided on at least one catalytic surface of said catalytic member and, in use, at least partly being in contact with the exhaust and, where, in use, the direction of the exhaust is substantially transverse to the waves of said first wave-like structure.

1 . A stove comprising
 a combustion chamber and a flue for removing exhaust from said combustion chamber ( 117 ), where said combustion chamber and said flue are connected via a passageway;   said combustion chamber comprising a top and a bottom, where said top and said bottom are connected by one or more sides;   a catalytic unit arranged between said combustion chamber and said flue in said passageway;   said catalytic unit provides a guide way for the exhaust, where said catalytic unit comprises at least one isolating member and at least one catalytic member,   said catalytic member comprising a first wave-like structure, said first wave-like structure being provided on at least one catalytic surface of said catalytic member and, in use, at least partly being in contact with the exhaust and, where, in use, the direction of the exhaust is substantially transverse to the waves of said first wave-like structure.   
     
     
         2 . The stove according to  claim 1  wherein said catalytic member is integrated in an exposed isolating surface of at least one isolating member. 
     
     
         3 . The stove according to  claim 1  wherein said exposed isolating surface of at least one isolating member facing said catalytic member comprise a second wave-like structure, where, in use, the direction of the exhaust is substantially transverse to the waves of said second wave-like structure. 
     
     
         4 . The stove according to  claim 3  wherein the mutual distance perpendicular to the intended travel direction of the exhaust is constant between said first and said second wave-like structures. 
     
     
         5 . The stove according to  claim 1  wherein said at least one isolating member forms at least a part of said top of the combustion chamber. 
     
     
         6 . The stove according to  claim 1  wherein said stove further comprises an additional member, said additional member is arranged in said passageway, where said additional member extends said guide way for the exhaust and said additional member preferably is an additional isolating member. 
     
     
         7 . The stove according to  claim 1  wherein said at least one isolating member comprises at least one end at at least one opening of the catalytic unit, where, in use, said exhaust enters and/or exits said catalytic unit and that at least one of said isolating member comprises a bent edge where the bent edge is formed at least partly along said at least one end of said isolating member. 
     
     
         8 . The stove according to  claim 1  wherein said catalytic member is a plate. 
     
     
         9 . The stove according to  claim 1  wherein said catalytic member is a grid. 
     
     
         10 . The stove according to  claim 1  wherein said catalytic unit comprises two isolating members and one catalytic member, where said catalytic member is arranged between said two isolating members. 
     
     
         11 . The stove according to  claim 1  wherein said exposed isolating surface on said at least one isolating member comprises at least one protruding portion. 
     
     
         12 . The stove according to  claim 11  wherein said at least one isolating member comprises at least two ends at at least an inlet and an outlet opening of said catalytic unit, where, in use, said exhaust enters and exits said catalytic unit, said at least two ends is connected by at least two sides and where said at least one protruding portion is arranged along at least one of said sides of said isolating member. 
     
     
         13 . The stove according to  claim 1  wherein said catalytic member is coated with at least one layer of metal; said metal is located on the surface of said catalytic member for reacting with carbon monoxide (CO), volatile organic compounds (VOC) and particles in said exhaust. 
     
     
         14 . The stove according to  claim 1  wherein said catalytic unit is inclined relative to said bottom of said combustion chamber.