Patent ID: 7758337

Claim:
A burner device comprising: an evaporation zone upstream of a combustion chamber for evaporating liquid fuel supplied via a fuel inlet line; an igniter for igniting a combustion mixture of evaporated liquid fuel and combustion air supplied via a combustion air inlet line to the evaporation zone; an exhaust discharge downstream of the combustion chamber; a mixing zone provided between the evaporation zone and the combustion chamber, and in which a fuel gas supplied to the mixing zone via a fuel gas inlet line is mixable with at least one of the combustion air and the combustion mixture; and a porous body at least partially filling the combustion chamber, wherein the burner device is configured to employ a flame of a combustion of liquid fuel in a combinational operation as pilot flame for the combustion of the fuel gas, and liquid fuel and fuel gas of a combustion mixture enriched with fuel gas is combusted in the combustion chamber.