Liquid fuel burner head

Claim 1

An improved liquid fuel burner head comprising coaxial components, a nozzle for delivering a jet of atomized fuel in a direction coincident with the axis of said components and means to deliver flows of comburent air all around said fuel jet, wherein coaxial chambers are formed within said components, to which pressure air is fed in an amount smaller than the stoichiometrically required amount, for the formation of primary air or initial combustion flow, and respectively in an amount at least complemental to attain said stoichiometric amount, for the formation of a secondary air flow adapted to complete the combustion, said chambers comprising systems of axial and respectively annular openings and passages coaxial with said component axis, said annular system delivering said secondary air flow comprising means for quidedly delivering pressure air in the form of a converging, essentially laminar flow that encompasses an inner space wherein an initial combustion with comburent air deficiency occurs, and surrounds an outer space wherein said combustion is completed and the burning mixture is diluted by circulating flows, as induced by the speed of said essentially laminar flow said outlet system from the inner chamber of said coaxial chambers comprising a central orifice in front of said nozzle, as well as essentially radially directed slits that are slanting in respect of a plane perpendicular to nozzle axis, in order to induce at least a part of the air flowing from said system to form a vortex that ensures the mixture of said air and atomized fuel to expand within a space as defined by said convergent laminar flow delivered from the outer chamber outlet systems.