RECUPERATIVE GAS BURNER, AND AIR HEATING METHOD USING THAT BURNER Russian patent published in 2012 - IPC F23D14/20 F23D14/26 F23Q7/06 F23L15/00 

FIELD: heating.

SUBSTANCE: recuperative gas burner includes housing, combustion chamber coaxially located in it, gas chamber with multijet gas nozzle and ignition device, air chamber located in annular space between combustion chamber and housing; at that, combustion chamber is provided with cylindrical and slot holes uniformly located along the perimetre; air supply branch pipe is located on the housing on gas chamber side; at that, gas burner includes cylindrical shell fixed in housing dividing the air chamber into external and internal annular air chambers interconnected between each other on the side of outlet nozzle; combustion chamber is equipped with longitudinal ribs uniformly located along the perimetre; housing is provided with heat insulation. At operation of the burner, first, air is supplied through external annular air chamber located between heat-insulated housing and cylindrical shell in the direction from gas chamber to outlet nozzle, where it is heated from annular shell and heat-insulated housing; then, in opposite direction, through internal annular air chamber located between annular shell and combustion chamber, where it is heated further from cylindrical shell, combustion chamber and longitudinal ribs, and after that, through cylindrical and slot holes to combustion chamber.

EFFECT: increasing combustion efficiency of gaseous fuel by means of additional heating in it of air and inner recuperation of heat.

4 cl, 1 dwg