Apparatus for heating with natural gas

Claim 1

A BURNER INTENDED TO BE MOUNTED AXIALLY IN THE ENTRANCE OF A RADIATING OPENING WHICH IS PROVIDED IN AN ENCLOSURE TO BE HEATED AND COMMUNICATES WITH AIR SUPPLY CONDUITS, THE BURNER COMPRISING MEANS DEFINING A BODY IN WHICH ARE PROVIDED, A MAIN AXIAL CONDUIT MEANS FOR SUPPLYING RAW NATURAL GAS TO SAID MAIN CONDUIT, SAID CONDUIT MEANS HAVING AN OUTLET END AND INLET END, A JET COMPOSED OF REFRACTORY MATERIAL AND IN THE FORM OF A SLEEVE WHICH IS COAXIAL WITH AND COMMUNICATES WITH THE MAIN CONDUIT, AN ANNULAR AUXILIARY CONDUIT COAXIAL WITH THE MAIN CONDUIT AND COMMUNICATING WITH THE SLEEVE IN AN ANNULAR ZONE WHICH IS CONTIGUOUS WITH THE INNER FACE OF THE SLEEVE AND WITH SAID OUTLET END OF THE MAIN CONDUIT, MEANS FOR SUPPLYING A MIXTURE OF NATURAL GAS AND AN OXIDANT TO SAID AUXILIARY CONDUIT, THE BURNER FURTHER COMPRISING A MAIN PIPE HAVING ONE END FOR CONNECTION TO A SOURCE OF NATURAL GAS AND ANOTHER END COMMUNICATING WITH SAID INLET END OF THE MAIN CONDUIT, A SECONDARY PIPE HAVING ONE END CONNECTED TO THE MAIN PIPE AND ANOTHER END COMMUNICATING WITH THE INTERIOR OF AND BEING CONNECTED TO SAID INLET END OF THE MAIN CONDUIT IN SUCH MANNER AS TO BE TANGENT WITH THE MAIN CONDUIT, WHEREBY A PORTION OF SAID NATURAL GAS IS SUPPLIED TANGENTIALLY IN THE INLET END OF THE MAIN CONDUIT.