Burner for liquid fuels

Claim 1

A LIQUID FUEL INJECTING ASSEMBLY COMPRISING AN INNER FUEL DUCT SURROUNDED BY AN OUTER GAS DUCT COAXIAL THEREWITH IN THEIR LAST PORTION BEFORE A COMBUSTION CHAMBER OF A BURNER, A TUBE OF REFRACTORY MATERIAL BETWEEN SAID DUCTS AND ADHERENT TO THE FUEL DUCT, SAID TUBE HAVING AN OUTER DIAMETER SLIGHTLY SMALLER THAN THE INNER DIAMETER OF THE AIR DUCT, SO AS TO LEAVE AN ANNULAR SPACE OF SMALL THICKNESS FOR THE PASSAGE OF GAS, SAID TUBE HAVING AN ELECTRIC RESISTANCE COILED ON ITS OUTER SURFACE ARRANGED TO HEAT THE GAS WITHIN THE GAS DUCT TO A HIGH TEMPERATURE DIRECTLY BY CONDUCTION AND RADIATION AND SIMULTANEOUSLY TO INCREASE THE TEMPERATURE OF THE LIQUID FUEL BY CONDUCTION THROUGH THE WALL OF SAID FUEL DUCT SO THAT THE FUEL PASSES TO A VAPOR SURROUNDING A MIXING CHAMBER AT THE END OF THE GAS DUCT SURROUNDING A MIXING CHAMBER AT THE END OF SAID FUEL DUCT, SMAL RADIAL CHANNELS PROVIDED IN THE WALLS OF SAID MIXING CHAMBER TO PERMIT ENTRY OF GAS UNDER PRESSURE FROM SAID ANNULAR CHAMBER, MEANS FOR REGULATING THE ENTRY OF FUEL FROM SAID FUEL DUCT TO THE MIXING CHAMBER, AND A DISCHARGE BORE IN SAID MIXING CHAMBER HAVING A RELATIVELY SMALL DIAMETER TO IMPART A HIGH SPEED TO THE MIXTURE OF GAS AND FUEL DISCHARGED INTO AN ADJACENT COMBUSTION CHAMBER.