[특허]Gas burner for cooking appliances

Electrolux Home Products Corporation N.V.

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특허 상세정보

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Gas burner for cooking appliances

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F24C-003/00 F23D-014/06
출원번호	US-0309103 (2007-08-02)
등록번호	US-9835327 (2017-12-05)
우선권정보	EP-06120216 (2006-09-06)
국제출원번호	PCT/EP2007/058032 (2007-08-02)
§371/§102 date	20090507 (20090507)
국제공개번호	WO2008/028731 (2008-03-13)
발명자 / 주소	Tomaselli, Carlo Catalogne, Cedric Corleoni, Francesco Strada, Stefano Starnini, Marco
출원인 / 주소	Electrolux Home Products Corporation N.V.
대리인 / 주소	Pearne & Gordon LLP
인용정보	피인용 횟수 : 0 인용 특허 : 28

초록
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The invention relates to a burner for gas-fired cooking appliances, with a structure comprised of: a body (10) defining a chamber (12) within which an injector (14) inputs the gas which, upon mixing with air, forms the gas-air combustible mixture; a ring (16) positioned over the body and provided with a periphery along which are arranged the combustible mixture outlet ports (18), and a circular plate (20) that closes the top of the burner. At least the burner ring (16) is made of a metal or a metal alloy and is coated with a thin layer of material having...

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청구항
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1. A burner for gas-fired cooking appliances, the burner comprising: a burner body defining a chamber;a burner-covering plate positioned above the burner body;a ring-shaped burner element positioned between the burner body and the burner-covering plate, the ring-shaped burner element and the burner-covering plate defining an outlet between a periphery of the ring-shaped burner element and a periphery of the burner body; andan injector for introducing gas into the chamber of the burner body wherein the flow of gas from the injector draws air into the chamber from a surrounding environment from an air inlet to form a combustible gas-air mixture within the chamber, the combustible gas-air mixture being conveyed into a space defined between the ring-shaped burner element and the burner-covering plate;wherein at least the ring-shaped burner element is made of a metal or a metal alloy and is coated with a thin layer of material having catalytic activity,wherein the ring-shaped burner is configured such that the combustible gas-air mixture is conveyed over the material having catalytic activity and reacts with the material having catalytic activity upstream of the outlet to form a pre-oxidized air-gas mixture within the chamber of the burner body, the outlet between the periphery of the ring-shaped burner element and the periphery of the burner body configured to allow the pre-oxidized air-gas mixture to exit the chamber of the burner body for ignition outside of the chamber, andwherein the material having catalytic activity is one of simple metal oxides and mixed metal oxides. 2. The burner of claim 1, wherein the material having catalytic activity is one of oxides of alkaline and oxides of alkaline-earth metals. 3. The burner of claim 1, wherein the burner-covering plate is made of a metal or metal alloy, and at least an underside surface of the burner-covering plate is coated with a thin layer of the material having catalytic activity. 4. The burner of claim 3, wherein the material having catalytic activity is one of oxides of alkaline and oxides of alkaline-earth metals. 5. The burner of claim 1, wherein the burner body is made of a metal or metal alloy and at least an internal surface of the burner body is coated with a thin layer of the material having catalytic activity. 6. The burner of claim 5, wherein the material having catalytic activity is one of oxides of alkaline and oxides of alkaline-earth metals. 7. The burner of claim 1, wherein the burner is made of aluminum alloy. 8. The burner of claim 1, wherein the burner is made of Pyral. 9. The burner of claim 1, wherein the thin layer of material having catalytic activity is formed by immersion in a catalyst bath. 10. A burner for gas-fired cooking appliances, the burner comprising: a burner body defining a chambera burner-covering plate positioned above the burner body;a ring-shaped burner element positioned between the burner body and the burner-covering plate, the ring-shaped burner element and the burner-covering plate defining an outlet between a periphery of the ring-shaped burner element and a periphery of the burner body; andan injector for introducing gas into the chamber of the burner body wherein the flow of gas from the injector draws air into the chamber from a surrounding environment through an air inlet to form a combustible gas-air mixture within the chamber, the combustible gas-air mixture being conveyed into a space defined between the ring-shaped burner element and the burner-covering plate;wherein at least the ring-shaped burner element is made of a metal or a metal alloy and is coated with a thin layer of material having catalytic activity,wherein the burner-covering plate is made of a metal or metal alloy, and at least an underside surface of the burner-covering plate is coated with a thin layer of material having catalytic activity,wherein the ring-shaped burner is configured such that the combustible gas-air mixture is conveyed along the underside surface of the burner-covering plate and along a surface of the ring-shaped burner element and reacts with the materials having catalytic activity upstream of the outlet to form a pre-oxidized air-gas mixture in the chamber of the burner body, the outlet between the periphery of the ring-shaped burner element and the periphery of the burner body configured to allow the pre-oxidize air-gas mixture to exit the chamber of the burner body for ignition outside of the chamber, andwherein the thin layer of material having catalytic activity on the ring-shaped burner element and the underside surface of the burner-covering plate is one of simple metal oxides and mixed metal oxides. 11. The burner of claim 10, wherein the material having catalytic activity is one of oxides of alkaline and oxides of alkaline-earth metals. 12. The burner of claim 11, wherein the burner body is made of a metal or metal alloy and at least an internal surface of the burner body is coated with a thin layer of the material having catalytic activity. 13. The burner of claim 10, wherein the burner is made of aluminum alloy. 14. The burner of claim 10, wherein the burner is made of Pyral. 15. The burner of claim 10, wherein the thin layer of material having catalytic activity is formed by immersion in a catalyst bath. 16. The burner of claim 10, wherein the ring-shaped burner is configured such that the combustible gas-air mixture reacts with the material having catalytic activity on the bottom surface of the ring-shaped burner before the combustible gas-air mixture is combusted by flowing outwardly along the bottom surface of the ring-shaped burner. 17. The burner of claim 8, wherein a buffer layer of Al2O3 is disposed on the ring-shaped burner element and between the ring-shaped burner element and the material having catalytic active. 18. The burner of claim 1, wherein a buffer layer of Al2O3 is disposed on the ring-shaped burner element and between the ring-shaped burner element and the material having catalytic active. 19. The burner of claim 1, wherein the air inlet to the chamber is on a periphery of the burner body. 20. The burner of claim 10, wherein the air inlet to the chamber is on a periphery of the burner body. 21. The burner of claim 1, further comprising an ignition device for igniting the pre-oxidized air-gas mixture outside the chamber of the burner body. 22. The burner of claim 10, further comprising an ignition device for igniting the pre-oxidized air-gas mixture outside the chamber of the burner body. 23. The burner of claim 1, wherein at least one of the ring-shaped burner element and the burner-covering plate includes a plurality of tooth-shaped projections disposed on a peripheral edge of the at least one of the ring-shaped burner element and the burner-covering plate. 24. The burner of claim 10, wherein at least one of the ring-shaped burner element and the burner-covering plate includes a plurality of tooth-shaped projections disposed on a peripheral edge of the at least one of the ring-shaped burner element and the burner-covering plate. 25. The burner of claim 1, wherein the material having catalytic activity has an activation temperature in the range of 200-400° C. 26. The burner of claim 10, wherein the material having catalytic activity has an activation temperature in the range of 200-400° C.

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Gas burner for cooking appliances

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Gas burner for cooking appliances

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