Two-stage burner apparatus

Claim 1

A BURNER OF THE INTERNAL COMBUSTION TYPE COMPRISING AN INTERNAL COMBUSTION CHAMBER, A PROCESSING CHAMBER, A CONSTRICTED THROAT SECTION COMMUNICATING BETWEEN SAID INTERNAL COMBUSTION CHAMBER AND SAID PROCESS CHAMBER FOR INTRODUCING THE HOT PRODUCTS OF COMBUSTION FROM SAID COMBUSTION CHAMBER INTO SAID PROCESSING CHAMBER SAID CONSTRICTED THROAT SECTION HAVING A CROSS-SECTIONAL AREA SUCH THAT THE PRODUCTS OF COMBUSTION FROM SAID INTERNAL COMBUSTION CHAMBER ENTER SAID PROCESSING CHAMBER, AT SUBSTANTIALLY SONIC VELOCITY, INLET MEANS FOR INTRODUCING A STREAM OF FLUID FUEL AND OXIDANT MIXTURE IN SUBSTANTIALLY STOICHIOMETRIC PROPORTIONS INTO SAID COMBUSTION CHAMBER TO BURN SUBSTANTIALLY COMPLETELY THEREIN, SAID INLET MEANS COMPRISING SEPARATE SUPPLY CONDUITS FOR FUEL AND OXIDANT TERMINATING IN METERING PASSAGES ADJACENT THE INLET OF SAID INTERNAL COMBUSTION CHAMBER, SAID METERING PASSAGE EACH HAVING CROSS-SECTIONAL AREA SMALLER THAN THE SUPPLY CONDUIT THEREFOR TO FORM AND IMPINGE STREAMS OF FUEL AND OXIDANT AT HIGH VELOCITY INTO SUDDEN MIXING ENGAGEMENT WITH EACH OTHER AT A SUBSTANTIAL ANGLE OF IMPINGEMANE SUCH THAT THE FLUID FUEL AND OXIDANT MIXTURE IS FORMED AND INTRODUCED INTO SAID INTERNAL COMBUSTION CHAMBER AT A VELOCITY GREATER THAN 0.5 MACH NUMBER, AND MEANS POSITIONED IN SAID PROCESSING CHAMBER IN THE VICINITY OF THE JUNCTURE OF SAID CONSTRICTED THROAT SECTION AND SAID PROCESSING CHAMBER FOR INTRODUCING A STREAM OF FLUID STOCK INTO SAID SUBSTANTIALLY SONIC VELOCITY STREAM OF HOT COMBUSTION PRODUCTS ENTERING SAID PROCESSING CHAMBER FROM SAID CONSTRICTED THROAT SECTION.