Film evaporator burner arrangement

Abstract

A film evaporator burner arrangement ( 1 ) is provided, having: a combustion chamber arrangement comprising a combustion chamber ( 2 ) for the conversion of a fuel-air mixture with the release of heat, which extends in the axial direction along a longitudinal axis (Z); a combustion air supply ( 5 ) for the supply of combustion air, which is configured such that the combustion air is supplied with a tangential flow component to at least one combustion air inlet ( 8 ) of the combustion chamber arrangement; a film evaporator surface ( 4 ) for evaporating liquid fuel originating from a fuel film ( 10 ), which is arranged at a rear wall ( 3 ) axially rearward of the combustion air inlet ( 8 ); and a fuel supply ( 9 ) for the supply of liquid fuel to the film evaporator surface ( 4 ).

1 . A film evaporator burner arrangement comprising:
 a combustion chamber arrangement including a combustion chamber for reacting a fuel-air mixture with release of heat and which extends in an axial direction along a longitudinal axis;   a combustion air feed supplying combustion air with a tangential flow component to the combustion chamber arrangement at at least one combustion air inlet;   a film evaporator surface evaporating liquid fuel starting from a fuel film arranged on a rear wall axially to a rear of the combustion air inlet; and   a fuel feed supplying liquid fuel to the film evaporator surface.   
     
     
         2 . The film evaporator burner arrangement as claimed in  claim 1 , in which the combustion air is supplied from radially outside at the combustion air inlet. 
     
     
         3 . The film evaporator burner arrangement as claimed in  claim 1 , wherein the film evaporator surface is free of porous, absorbent bodies. 
     
     
         4 . The film evaporator burner arrangement as claimed in  claim 1 , wherein the film evaporator surface extends predominantly perpendicular to the longitudinal axis. 
     
     
         5 . The film evaporator burner arrangement as claimed in  claim 1 , wherein the combustion air feed supplies the combustion air with the tangential flow component to the combustion chamber. 
     
     
         6 . The film evaporator burner arrangement as claimed in  claim 1 , wherein the combustion chamber arrangement includes a pre-evaporation chamber arranged flow wise upstream of the combustion chamber for conditioning a fuel-air mixture prior to entry thereof into the combustion chamber. 
     
     
         7 . The film evaporator burner arrangement as claimed in  claim 6 , wherein the pre-evaporation chamber is separated from the combustion chamber by a partition wall extending radially inwards from a side wall of the combustion chamber arrangement. 
     
     
         8 . The film evaporator burner arrangement as claimed in  claim 7 , wherein the partition wall extends radially inwards and axially rearwards from the side wall. 
     
     
         9 . The film evaporator burner arrangement as claimed in  claim 6 , wherein the pre-evaporation chamber has a smaller flow cross-section than the combustion chamber in a direction perpendicular to the longitudinal axis and the flow cross-section of the pre-evaporation chamber widens abruptly at a transition from the pre-evaporation chamber to the combustion chamber. 
     
     
         10 . The film evaporator burner arrangement as claimed in  claim 6 , wherein the combustion air feed supplies the combustion air with the tangential flow component to the pre-evaporation chamber. 
     
     
         11 . The film evaporator burner arrangement as claimed in  claim 1 , wherein the fuel feed supplies the fuel with a tangential direction component radially from outside to the film evaporator surface. 
     
     
         12 . The film evaporator burner arrangement as claimed in  claim 1 , wherein the combustion chamber is free of constrictions or contractions over its axial extent. 
     
     
         13 . A mobile heating appliance with a film evaporator burner arrangement as claimed in  claim 1 .