Patent ID: 7785100

Claim:
A burner assembly comprising: (a) a housing including an air inlet and a burner end having an opening; (b) a motor; (c) an impeller mounted in the housing, said impeller being in fluid communication with the air inlet, in mechanical communication with the motor and adapted to direct air from the air inlet towards the burner end of the housing; (d) a primary air tube, said primary air tube being disposed in the housing; (e) a plurality of gas injection tubes that are disposed substantially parallel to each other and substantially parallel to the primary air tube, each of said plurality of gas injection tubes having a tube inlet end in the housing, a tube outlet end in the housing and at least one aperture; (f) a first tube sheet disposed substantially perpendicular to the primary air tube near the tube inlet ends of the plurality of gas injection tubes, said first tube sheet being substantially planar and adapted to prevent air from flowing around the plurality of gas injection tubes; (g) a second tube sheet disposed substantially perpendicular to the primary air tube near the tube outlet ends of the plurality of gas injection tubes, said second tube sheet being substantially planar and adapted to prevent air from flowing around the plurality of gas injection tubes; (h) a spin vane comprising at least one spin vane blade, said spin vane being mounted in the burner end of the housing and adapted to direct the flow of air in the burner end; and, (i) an igniter mounted in the burner end of the housing, said igniter being adapted to ignite the air and fuel mixture in the burner end of the housing to produce a main flame; wherein the tube inlet end is adapted to receive air directed from the air inlet.