Oil burner

An oil burner of the high pressure type having a number of burner nozzles (16, 17) mounted in a burner housing (14), each nozzle (16, 17) adapted to eject a concentrated high pressure jet of oil which is decomposed into a body (7', 8') of separate oil drops each body (7', 8') having a central axis (27, 28) extending axially through the center of said nozzles (16, 17), means (21) for having combustion air (39) flow through said burner housing past said burner nozzles (16, 17), said oil burner characterized by:

• a flame cup (13) having a larger cross sectional area than the burner housing (14) and a forwardly located outlet opening (23) having a smaller cross sectional area than said housing cross sectional area, said flame cup (13) having a throat (12) directly connected to the burner housing (14) and extending coaxially therewith, the oil drop bodies (7', 8') and the combustion air being mixed to an intimate fuel-air mixture within said flame cup,
• a turbulator (22) having a center hole (34) for passage therethrough of the oil drop bodies (7', 8') and tubulator wings (35) arranged around said center hole for imparting an axial screw movement to the passing combustion air, said turbulator being located between the burner nozzles (16, 17) and the outlet opening (23) so that the turbulator hole (34) is substantially tangential to the periphery of the oil drop bodies, and
• the burner nozzles (16, 17) being arranged symmetrically around the longitudinal axis (26) of the burner housing (14) and mounted at an angle relative to one another to cause the central axis (27, 28) of the oil bodies (7', 8') to cross each other substantially along the longitudinal axis (26) at a point between the turbulator (22) and the outlet (23) of the flame cup (13).