초록 ▼

A micro gas burner is provided that generates a stable, pre-mixed flame that produces little to no soot or unburned hydrocarbons. The gas burner includes a fuel inlet, nozzle, oxygenation chamber with at least one air inlet, a mixing chamber having a frustoconical inner wall, at least one permeable

A micro gas burner is provided that generates a stable, pre-mixed flame that produces little to no soot or unburned hydrocarbons. The gas burner includes a fuel inlet, nozzle, oxygenation chamber with at least one air inlet, a mixing chamber having a frustoconical inner wall, at least one permeable barrier and a flame holder. The gas burner thoroughly mixes fuel and entrained air to form a nearly stoichiometric mixture prior to combustion. The gas burner mixes the fuel and air so thoroughly that it requires a lower fuel flow rate than would otherwise be necessary to produce a stable, pre-mixed flame. The gas burner may include an optional flame tube with an optional exhaust port in which a flame is contained and sequestered from diffusing air.

대표청구항 ▼

What is claimed is: 1. A gas burner, adapted to be integrally combined with a smoking article, comprising: a venturi having a nozzle and an oxygenation chamber in flow communication with said nozzle, said oxygenation chamber having at least one air inlet; a mixing chamber in flow communication with

What is claimed is: 1. A gas burner, adapted to be integrally combined with a smoking article, comprising: a venturi having a nozzle and an oxygenation chamber in flow communication with said nozzle, said oxygenation chamber having at least one air inlet; a mixing chamber in flow communication with said oxygenation chamber and having a frustoconical portion of an inner wall that diverges from said oxygenation chamber; at least one permeable barrier in flow communication with said mixing chamber and being disposed opposite said oxygenation chamber; and a flame holder in flow communication with said permeable barrier, said flame holder including a flame tube in flow communication with said flame holder, said flame tube having an exhaust port and being adapted to hold said smoking article. 2. The gas burner of claim 1, said at least one air inlet being open to ambient. 3. The gas burner of claim 1, said at least one air inlet disposed in a side wall of said oxygenation chamber. 4. The gas burner of claim 1, wherein said nozzle includes an orifice opening into said oxygenation chamber. 5. The gas burner of claim 1, including a fuel inlet being in flow communication with a fuel storage container. 6. The gas burner of claim 5, said fuel storage container containing a gaseous fuel. 7. The gas burner of claim 6, said a gaseous fuel including a low molecular weight hydrocarbon. 8. The gas burner of claim 7, wherein said low molecular weight hydrocarbon is selected from the group consisting of methane, ethane, propane, butane, and acetylene. 9. The gas burner of claim 1, including a burner housing. 10. The gas burner of claim 9, said mixing chamber, said permeable barrier and said flame holder being disposed within said burner housing. 11. The gas burner of claim 1, said mixing chamber including a ferrule disposed therein. 12. The gas burner of claim 1, said flame holder having three openings therein. 13. The gas burner of claim 12, wherein each of said three openings are substantially circular. 14. The gas burner of claim 12, said three openings being spaced about 120�� apart around a center of said flame holder. 15. The gas burner of claim 14, wherein each of said three openings are kidney-shaped. 16. The gas burner of claim 1, said at least one permeable barrier including a wire mesh. 17. The gas burner of claim 16, said wire mesh being formed of a metal. 18. The gas burner of claim 17, wherein said metal is selected from the group consisting of nickel, brass, and steel. 19. The gas burner of claim 1, said at least one permeable barrier being formed of a ceramic. 20. The gas burner of claim 1, said at least one permeable barrier having a porosity of approximately 35% to 40%. 21. The gas burner of claim 1, including an ignition means in flow communication with said flame holder. 22. The gas burner of claim 21, said ignition means being a piezoelectric igniter. 23. The gas burner of claim 1, said nozzle having an inner diameter of about 30 to 60 microns. 24. The gas burner of claim 1, said mixing chamber being about 3 mm to 4 mm in length. 25. The gas burner of claim 1, wherein said oxygenation chamber has a spherical side wall. 26. The gas burner of claim 25, said oxygenation chamber including a proximal wall having a recessed portion therein. 27. The gas burner of claim 1 wherein said exhaust port is substantially adjacent to said flame holder. 28. The gas burner of claim 1, said flame tube being formed of a ceramic material. 29. A gas burner for use with a smoking article comprising: a nozzle; an oxygenation chamber in flow communication with said nozzle; at least one air inlet in flow communication with said oxygenation chamber; a mixing chamber in flow communication with said oxygenation chamber, said mixing chamber having a frustoconical inner wall; and, a flame holder in flow communication with said mixing chamber, said flame holder having at least one opening therein; and a flame tube in flow communication with said flame holder, said flame tube being open at one end to receive said smoking article and having an exhaust port remote from said one end. 30. The gas burner of claim 29, said at least one air inlet being open to ambient. 31. The gas burner of claim 29, wherein said nozzle includes an orifice opening into said oxygenation chamber. 32. The gas burner of claim 29 wherein said exhaust port is substantially adjacent to said flame holder. 33. A gas burner, integrally combined with a smoking article, comprising: a venturi having a nozzle and an oxygenation chamber in flow communication with said nozzle, said oxygenation chamber having at least one air inlet; a mixing chamber in flow communication with said oxygenation chamber and having a frustoconical portion of an inner wall that diverges from said oxygenation chamber; at least one permeable barrier in flow communication with said mixing chamber and being disposed opposite said oxygenation chamber; a flame holder in flow communication with said permeable barrier: a flame tube in flow communication with said flame holder; and at least one exhaust port in said flame tube. 34. The gas burner of claim 33 wherein said at least one exhaust port is substantially adjacent to said flame holder. 35. The gas burner of claim 33, further having said smoking article being partially surrounded by said flame tube.