Combustion air directing apparatus

Claim 1

AN IMPROVED BURNER HEAD FOR A GUN-TYPE OIL BURNER HAVING AN AIR BLAST TUBE AND AN AXIAL FUEL SUPPLY CONDUIT TERMINATING IN AN OIL-ATOMIZING NOZZLE, COMPRISING A BLAST TUBE EXTENSION HAVING A CYLINDRICAL PORTION AND A CONSTRICTING FRUSTOCONICAL PORTION, SAID CYLINDRICAL PORTION BEING ADAPTED FOR ATTACHMENT TO THE BLAST TUBE, SAID FRUSTOCONICAL PORTION ADAPTED TO EXTEND BEYONG SAID BLAST TUBE; A FLAME-HOLDING DISK POSITIONED WITHIN SAID FRUSTOCONICAL PORTION, SAID DICK BEING PROVIDED WITH A CIRCULAR PORT ADAPTED TO ALLOW ATOMIZED OIL FLOW THERETHROUGH SAID PORT BEING CONCENTRIC WITH THE PERIPHERY OF SAID DISK, SAID BLAST TUBE EXTENSION AND SAID DISK BEING COAXIAL AND SEPARATED; LOUVER MEANS, SAID LOUVER MEANS BEING FORMED INTEGRAL WITH SAID DISK FOR DIRECTING A MINOR PORTION OF THE AIR ALONG THE SURFACE OF SAID DISK WHICH FACES TOWARD SAID CONSTRICTING PORTION SO AS TO PREVENT DIRECT CONTACT OF SAID DISK BY FLAMES; A PLURALITY OF AIR-DIRECTING VANES DISPOSED IN THE ANBULAR PASSAGE SEPARATING SAID DISK AND SAID BLAST TUBE EXTENSION, EACH OF SAID VANES LYING WHOLLY WITHIN A PLANE PARALLEL TO THE AXIS OF SAID BLAST TUBE; A COLLAR ADAPTED TO FIT AROUND AN OIL SPRAY NOZZLE WITHIN THE BLAST TUBE; AND A PLURALITY OF ARMS, EACH LYING IN A PLANE PARALLEL TO THE AXIS OF THE CYLINDRICAL PORTION, SAID ARMS CONNECTING SAID COLLAR WITH SAID FRUSTOCONICAL PORTION TO MAINTAIN SAID COLLAR CONCENTRIC WITH SAID CYLINDRICAL PORTION AND SAID DISK; SAID BLAST TUBE EXTENSION, SAID DISK, SAID LOUVER MEANS, SAID VANES, AND SAID ARMS ALL BEING OF MATERIAL POSSESSING A LOW HEAT CAPACITY, WHEREBY RADIATION FROM SAID BURNER HEAD TO SAID NOZZLE IS MINIMIZED AFTER TERMINATION OF COMBUSTION