Combustion apparatus for both gaseous and non-gaseous fuels

Claim 1

IN A MULTIPLE FUEL COMBUSTION DEVICE OF THE CHARACTER DESCRIBED HAVING SEPARATE GASEOUS FUEL AND NON-GASEOUS FUEL BURNERS ARRANGED TOGETHER FOR DISCHARGING SAID FUELS AND COMBUSTION AIR INTO A COMBUSTION SPACE FOR THE MIXING THEREOF AND SUBSTANTIALLY COMPLETE COMBUSION THEREIN WITH AN EXCESS OF AIR, SAID DIFFERENT FUELS REQUIRING DIFFERENT VELOCITIES AND PROPORTIONS OF COMBUSTION AIR, THE COMBINATION WHICH COMPRISES MEANS PROVIDING A SINGLE SOURCE OF AIR SUPPLY UNDER PRESSURE FOR BOTH SAID GASEOUS AND NON-GASEOUS FUEL BURNERS FOR ADMIXTURE WITH SAID FUELS AND INCLUDING AN EXCESS AMOUNT OF AIR FOR PROVIDING FOR SUBSTANTIALLY COMPLETE COMBUSTION OF SAID FUELS, AIR DISCHARGE MEANS IN SAID NON-GASEOUS FUEL BURNER FOR DISCHARGING AIR WITH SAID NON-GASEOUS FUEL INTO A COMBUSTION SPACE FOR MIXING AND SUBSTANTIALLAY COMPLETE COMBUSTION THEREIN, SEPARATE AND INDEPENDENT AIR DISCHARGE MEANS IN SAID GASEOUS FUEL BURNER FOR DISCHARGING AIR WITH SAID GASEOUS FUEL INTO SAID COMBUSTION SPACE FOR MIXING AND SUBSTANTIALLY COMPLETE COMBUSTION THEREIN, SAID GASEOUS FUEL BURNER BEING DISPOSED AS A RING OF ALTERNATING AIR AND FUEL PORTS AROUND SAID NON-GASEOUS FUEL BURNER, SAID AIR DISCHARGE MEANS IN SAID NON-GASEOUS FUEL BURNER HAVING A SUBSTANTIALLY SMALLER EFFECTIVE CROSS-SECTIONAL AREA THAN SAID AIR DISCHARGE MEANS IN SAID GASEOUS FUEL BURNER FOR PROVIDING SUBSTANTIALLY HIGHER AIR DISCHARGE VELOCITIES THAN SAID GASEOOUS FUEL BURNER, ADJUSTABLE AIR CONTROL MEANS FOR THROTTLING THE FLOW OF AIR FROM SAID SOURCE OF AIR SUPPLY TO SAID GASEOUS FUEL BURNER AND CONCOMITANTLY CONTROLLING SAID FLOW OF AIR TO SAID NON-GASEOUS FUEL BURNER, AND MEANS IN SAID AIR CONTROL MEANS FOR MAINTAINING A SMALL COOLING FLOW OF AIR TO SAID GASEOUS FUEL BURNER EVEN IN THE FULLY THROTTLED POSITION OF SAID CONTROL MEANS AND WHEN SAID GASEOUS FUEL BURNER IS NOT OPERATING FOR PROVIDING COOLING THEREOF FROM THE HEAT OF SAID NON-GASEOUS FUEL BURNER.