An evaporator arrangement for an evaporator burner for a mobile heating device is provided, having: an evaporator body support into which a fuel supply line for supplying a liquid fuel opens, and an evaporator body for distributing and evaporating the liquid fuel. The evaporator body comprises at least one layer of a metal woven fabric of interwoven metal wires.

A combustion chamber subassembly for a vaporizing burner, in particular for a fuel-operated vehicle heating device, includes a combustion chamber housing having a circumferential wall which extends in the direction of a longitudinal housing axis. The circumferential wall surrounds a combustion chamber in a radially outward direction. The combustion chamber has a combustion chamber base which delimits the combustion chamber in an axial direction. A porous vaporizing medium is provided at a side, facing the combustion chamber, of the combustion chamber base. The porous vaporizing medium is concave-curved with respect to the combustion chamber at the side thereof facing the combustion chamber.

The ignition characteristics of a fuel are adjusted using a unit which has a distribution zone, a oxidation zone and a conversion zone. Fuel is distributed in the distribution zone having a distribution structure. A portion of the fuel is oxidised in the oxidation zone with a oxidising agent on a catalyst on a catalyst carrier, and a portion of the distributed fuel and/or of another supplied fuel is thermally and/or catalytically converted in the conversion zone. The ignition characteristics of the fuel are adjusted via: the molar ratio of oxygen included in the oxidising agent to the oxygen required for the complete oxidation of the fuel provided; and/or via the pressure in the unit; and/or the dwell time; and/or the temperature. Exhaust emissions, in particular NOx and soot emissions, can be lowered.

A porous fuel treatment element (5) for an evaporation burner is provided, said porous fuel treatment element (5) having at least one first tier (8) of a textile planar structure which is formed from a plurality of fibers. The fibers in the first tier (8) comprise at least two different fiber types (10, 11) which differ in terms of the material, of the cross-sectional profile, of the surface structure, and/or of the thickness.

The invention relates to a porous fuel treatment element for an evaporation burner, comprising at least one layer (8) formed by fibers (10). Said fibers (10) comprise basalt fibers.

A mobile heating device, comprising a heater assembly including a fuel chamber, and a fuel supply line for supplying liquid fuel to the heater assembly, where the heater assembly further includes an evaporator receiving arrangement for evaporating liquid fuel, said arrangement comprising an evaporator receiving body for receiving an evaporator element for distributing and evaporating liquid fuel, where the fuel supply line comprises a supply pipe with an inlet for inputting fuel and an outlet for outputting fuel to the combustion chamber, where the fuel supply line further includes an emptying device for partly or completely emptying the fuel supply line through the outlet.

The invention relates to an evaporator burner (1; 101) for a mobile heating device, comprising: a combustion chamber (3), a fuel feed line (4) for feeding liquid fuel, and an evaporator for evaporating fed fuel. The evaporator has a support body (6; 106) made of a nonporous material, comprising a fuel preparation surface (6a; 106a) which faces the combustion chamber (3) and which comes into contact with the liquid fuel. A surface structuring (11) with a plurality of depressions (11a) and elevations (11b) is introduced into the fuel preparation surface (6a; 106a) and/or into a support body (6; 106) rear face (6b; 106b) facing away from the fuel preparation surface.

An evaporator burner arrangement (100) for a mobile heater operated with liquid fuel is described, having: a mixture preparation region (2) for generating a fuel-air-mixture, a fuel evaporation surface (8) arranged in the mixture preparation region (2) for evaporating the liquid fuel, a combustion air supply (B) for supplying combustion air to the mixture preparation region (2), a fuel supply (1) for supplying liquid fuel to the fuel evaporation surface (8), a conversion region (3) being arranged fluidically downstream of the mixture preparation region (2) for converting the fuel-air-mixture in order to release heat, and a heat conductor body (7) extending spaced from a sidewall (25) of the mixture preparation region (2) through the mixture preparation region (2) to the conversion region (3) for feeding-back heat from the conversion region (3) to the mixture preparation region (2) by thermal conductance

An evaporator burner (100) for a mobile heating unit which is operated using liquid fuel is provided, said evaporator burner having: a mixture preparation region (2) for the mixing of fuel with combustion air to form a fuel-air mixture; a fuel feed (1) for feeding liquid fuel to the mixture preparation region (2); a combustion air feed (B) for feeding combustion air to the mixture preparation region (2); at least one evaporation surface (8) to which the liquid fuel is fed and which serves for the evaporation of the liquid fuel; a conversion region (3), positioned downstream of the mixture preparation region (2) in terms of flow, for the conversion of the fuel-air mixture into combustion exhaust gases (A) with a release of heat; and an exhaust-gas recirculation means (10; 210) for the recirculation of combustion exhaust gases (A) into the mixture preparation region (2).

A mobile heating device operated with liquid fuel is provided, having: a combustion chamber (2) comprising a combustion air inlet (3), wherein the combustion chamber (2) adjacent to the combustion air inlet (3) comprises a widening portion (20) the cross-section of which widens with increasing distance from the combustion air inlet (3) and in which in operation combustion air and fuel are converted in a flaming combustion; a fuel supply which is arranged such that fuel is supplied into the widening portion (20); and an air guide device (6) being adapted to feed combustion air into the widening portion (20) with a flow component directed in the circumferential direction such that an axial recirculation region forms in the widening portion (20) in which gases flow in the direction towards the combustion air inlet (3) oppositely to a main flow direction (H).