Oil burner assembly with air/oil rate adjusting means

Claim 1

A FUEL BURNER ASSEMBLY WHICH COMPRISES, A BURNER NOZZLE, OIL SUPPLY MEANS THROUGH WHICH OIL UNDER PRESSURE IS SUPPLIED TO SAID NOZZLE, AIR SUPPLY MEANS THROUGH WHICH A CONSTANT SUPPLY OF AIR UNDER PRESSURE IS FED TO SAID NOZZLE, MIXING MEANS DEFINING A SPACE IN THE BURNER ASSEMBLY UPSTREAM OF THE SAID NOZZLE WITH WHICH SAID OIL AND AIR SUPPLY MEANS COMMUNICATE AND IN WHICH THE OIL AND AIR ARE MIXED, AIR OUTLET MEANS IN SAID BURNER ASSEMBLY DEFINING AN EXCESS AIR OUTLET AND COMMUNICATING WITH SAID AIR SUPPLY MEANS FOR CONVEYING EXCESS AID FROM SAID AIR SUPPLY MEANS, A FUEL JET ORIFICE IN SAID BURNER NOZZLE EXTENDING FROM SAID SPACE THROUGH SAID BURNER NOZZLE, THE FUEL BEING ATOMISED IN SAID SPACE BEFORE THE MIXTURE IS DISCHARGED FROM THE SAID JET ORIFICE, MEANS FOR GIVING THE AIR A ROTARY TURBULENCE AS IT ENTERS SAID SPACE SO AS TO ENSURE THE CORRECT ATOMISATION OF THE FUEL, A COMBINED AIR AND FUEL CONTROL MEANS FOR CONTROLLING THE SUPPLY OF AIR AND FUEL TO SAID SPACE BY MEANS OF WHICH SAID BURNER ASSEMBLY HAS A PREDETERMINED MAXIMUM/MINIMUM AIR/FUEL RATIO, SAID AIR AND FUEL CONTROL MEANS SIMULTANEOUSLY PROPORTIONING THE SUPPLY OF AIR AND FUEL TO SAID NOZZLE BY SIMULTANEOUSLY ADJUSTING THE QUANTITY OF FUEL FED TO SAID NOZZLE AND CONTROLLING THE DISCHARGE OF ANY EXCESS OF AIR FED TO SAID NOZZLE THROUGH SAID OUTLET MEANS IN ORDER TO PROPORTION THE AIR/FUEL MIXTURE, AND MEANS FOR ENSURING A DESIRED FLOW OF FUEL IRRESPECTIVE OF VARIATION OF BACK PRESSURE ON THE FUEL AS IT FLOWS TO THE SAID JET ORIFICE AND VARIATIONS IN THE FUEL PRESSURE.