A fuel-operated vehicle heater, combustion chamber assembly unit includes a combustion chamber housing (14) having a combustion chamber bottom (18) and a combustion chamber circumferential wall (16) extending in a housing longitudinal axis (L) direction to define a combustion chamber (20). A porous evaporator medium (60) is on the combustion chamber circumferential wall or/and the combustion chamber bottom, at an inner side facing the combustion chamber. A fuel feed line (62) feeds liquid fuel into the porous evaporator medium. A first combustion air feed device (68), associated with the combustion chamber bottom, feeds primary combustion air (VP) into a first combustion zone (50) at which the porous evaporator medium is arranged. A second combustion air feed device (70), following the first combustion zone in the housing longitudinal axis direction feeds secondary combustion air (VS) into the combustion chamber at an axially spaced location from the first combustion zone.

A combustion device includes a fuel reservoir which includes a container and a tray disposed on the container and a wick inserted through a first hole of the tray and into a space of the container. Further, the combustion device includes a heat insulating and dissipating device which includes a heat insulating member and a heat dissipating member encircling the wick. The heat insulating member is made of a non-metallic material. The heat dissipating member is made of a metallic material.

A combustion chamber assembly unit for a fuel-operated vehicle heater includes a combustion chamber housing (14) elongated in a direction of a housing longitudinal axis (L), with a combustion chamber (16) radially outwardly bounded by a circumferential wall (18), and with a combustion chamber bottom (20) axially delimiting the combustion chamber (16). A combustion air feed volume (36) is provided that is open to the combustion chamber (16) via a plurality of passage openings (38). A cooling medium feed device (46) is provided for feeding a liquid cooling medium to the combustion air feed volume (36).

The invention relates to an evaporator burner (100) for a mobile heating device operated with liquid fuel, comprising: a mixture-preparing region (2) for mixing fuel with combustion air to form an air-fuel mixture, a fuel supply (1) for supplying liquid fuel to the mixture-preparing region (2), a combustion-air supply (B) for supplying combustion air to the mixture-preparing region (2), a reaction region (3) arranged downstream of the mixture-preparing region (2) for reacting the air-fuel mixture, heat thus being released, and an evaporator body (9) for evaporating the liquid fuel, which evaporator body extends in an axial direction in the mixture-preparing region (2) at a distance from a side wall and has an outer peripheral surface designed as a fuel-evaporating surface, which outer peripheral surface is arranged in such a way that the supplied combustion air flows around the outer peripheral surface.

A catalytic combustion burner made of porous material and a bottle equipped with such a burner. The burner has optimized operating performance which enables it to withstand and not be extinguished when it is subjected to strong air currents such as air conditioning.

An evaporator arrangement (1) for evaporating liquid fuel for a mobile fuel-operated heating device, comprising: an evaporator unit (5) for distributing and evaporating liquid fuel; and at least one fuel supply line (6) for delivering liquid fuel to the evaporator unit (5). The evaporator unit (5) has at least one first section (B1) made of a metal wire mesh (8).

An evaporator burner arrangement (100) for a mobile heater operated with liquid fuel 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

A heater assembly can be used with a gas appliance. The gas appliance can be a dual fuel appliance for use with one of a first fuel type or a second fuel type different than the first. The heater assembly can include a pressure sensor and a plurality of valves operable by a control module dependent upon a detected fuel pressure. The valves may be solenoid valves that can reduce the available fuel delivery paths to limit fuel delivery to a burner when a higher pressure, such as detection of LP gas, is detected.

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).

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.