Patent ID: 7273366

Claim:
A burner system producing a flame for destruction of vapors comprising: a generally elongated outer burner element having a sidewall, a front end having an opening, an opposed open back end, and a flange mounted to said front end; a generally tubular elongated inner burner element disposed within and spaced inwardly from said outer burner element, said inner burner element being open at opposed front and back ends thereof, including a small diameter front inlet and a larger diameter combustion zone at said back end; a vapor duct assembly connected to said front inlet, said vapor duct assembly including a duct portion, an elbow, and a step plate attached to said duct portion and said flange; an annular passageway formed between the inner burner element and the outer burner element for bypassing cooling air past and around the flame; a spark igniter connected to said vapor duct assembly and passing through said elbow and said front inlet and into said combustion zone; at least one fuel ignition device mounted to said inner burner assembly at said combustion zone; a bypass opening connected to said step plate in fluid connection with said annular passageway; an air blower located adjacent the front end of the outer burner system; an air supply duct connected between said air blower and said bypass opening said annular passageway; a bypass line between said duct portion and said air supply duct; and a control valve mounted on said bypass line to control the flow of vapors between the elbow and the air supply duct, whereby, the volume of the flow of vapors to the combustion zone may be controlled and varied to optimize burner performance.