BURNER DEVICE FOR HEATER Russian patent published in 2017 - IPC F23D3/40 F23D5/06 

FIELD: power industry.

SUBSTANCE: burner device (1) for a mobile fuel oil heater comprises a combustion chamber (2) for fuel convertion to air for combustion into a combustion flame, a that, the combustion chamber (2) extends along the longitudinal axis (Z) in the direction (H) of the main flow; a premixing chamber (3) which is located upstream of the fluid from the combustion chamber (2) to form a fuel-air mixture, the premixing chamber (3) comprises a side wall (4); a fuel evaporation surface (O) located in the premixing chamber; fuel supply (10) to supply liquid fuel; and the first combustion air supply (6) having a swirler (7) to supply combustion air flow to the premixing chamber (3) with twisting, so that the combustion air is directed along the fuel evaporation surface (O) with a tangential flow component, at that, the neck portion (5) is formed on the transition from the premixing chamber (3) to the combustion chamber (2), in which the flow cross section sharply expands in the direction (H) of the main stream. The fuel evaporation surface (O) continues for at least a portion of the sidewall (4) and the fuel supply comprises a fuel outlet (11) opening onto the sidewall (4). The first combustion air supply (6) is opened to the premixing chamber (3) on the front side (8) of the premixing chamber (3), which is turned away from the combustion chamber (2). The fuel evaporation surface (O) is formed by the side wall (4) of the premixing chamber (3).

EFFECT: invention avoids precipitation build-up in the area of liquid fuel evaporation, improves of fuel combustion quality, prevents flame from escaping from the combustion chamber into the premixing chamber.

16 cl, 4 dwg