Gas and liquid fuel burner combination

Claim 1

IN A FUEL BURNER ASSEMBLY, A FIRST CERAMIC MEMBER HAVING A FIRST FRUSTO-CONICAL INNER SURFACE DIVERGING IN PROCEEDING DOWNSTREAM OF THE BURNER ASSEMBLY, SAID CERAMIC MEMBER HAVING AN ANNULAR RECESS THEREIN AT THE UPSTREAM END OF SAID FRUSTO-CONICAL SURFACE, AN ANNULAR FACE ON SAID CERAMIC MEMBER DEFINING THE UPSTREAM WALL OF SAID RECESS, A PLURALITY OF CIRCUMFERENTIALLY SPACED BURNER TIPS WITHIN SAID CERAMIC MEMBER ADJACENT SAID RECESS, MEANS FOR SUPPLYING GASEOUS FUEL TO SAID BURNER TIPS, EACH OF SAID BURNER TIPS HAVING A DISCHARGE PORT DISPOSED TO DIRECT GASEOUS FUEL INTO SAID RECESS DOWNSTREAM OF SAID ANNULAR FACE AND SAID PORT HAVING ITS AXIS DISPOSED AT AN ACUTE ANGLE WITH RESPECT TO A RADIAL PLANE OF THE BURNER ASSEMBLY WHICH INTERCEPTS THE LONGITUDINAL AXIS OF THE ASSOCIATED BURNER TIP, A SECOND FRUSTO-CONICAL SURFACE ON SAID CERAMIC MEMBER FORMING THE DOWNSTREAM WALL OF SAID RECESS AND JOINING THE FIRST FRUSTO-CONICAL SURFACE AT AN ACUTE ANGLE AND PROVIDING AN ANNULAR LIP SHARP IN SECTION RADIALLY INWARDLY OF SAID BURNER TIPS, A SECOND CERAMIC MEMBER PROJECTING INTO THE FIRST CERAMIC MEMBER PROVIDING AN ANNULAR PASSAGE BETWEEN THE EXTERIOR OF THE SECOND CERAMIC MEMBER AND THE FIRST CERAMIC MEMBER, SAID SECOND CERAMIC MEMBER HAVING A PASSAGE THERETHROUGH WITH ONE PORTION OF SMALLER DIAMETER THAN OTHER PORTIONS OF SAID PASSAGE, A NOZLE FOR LIQUID FUEL SUPPORTED WITHIN SAID PASSAGE UPSTREAM OF SAID SMALL DIAMETER PORTION, A THIRD FRUSTO-CONICAL SURFACE WITHIN THE SECOND CERAMIC MEMBER FLARING FROM THE AXIS OF THE BURNER ASSEMBLY IN PROCEEDING DOWNSTREAM FROM SAID SMALL DIAMETER PORTION OF SAID PASSAGE, AND MEANS ADMITTING AIR FOR MOVEMENT THROUGH SAID ANNULAR PASSAGE INTO IMPACT ENGAGEMENT WITH THE SECOND FRUSTO-CONICAL WALL WHERE IT IS DIVERTED RADIALLY INWARDLY SUBSTANTIALLY AT RIGHT ANGLES TO THE AXIS OF THE BURNER ASSEMBLY.