Devices, methods, and systems for utilizing a burner with a combustion air driven jet pump are described herein. One burner apparatus includes a jet pump located inside a burner housing, the jet pump having a combustion air inlet that receives combustion air, a chamber to receive the combustion air
Devices, methods, and systems for utilizing a burner with a combustion air driven jet pump are described herein. One burner apparatus includes a jet pump located inside a burner housing, the jet pump having a combustion air inlet that receives combustion air, a chamber to receive the combustion air from the combustion air inlet, and a tapered portion of the chamber that tapers to an outlet having a smaller diameter than the diameter of the inlet.
대표청구항▼
1. A burner apparatus, comprising: a jet pump located inside a burner housing, the jet pump having a combustion air inlet that receives combustion air, a chamber to receive the combustion air from the combustion air inlet, and a tapered portion of the chamber that tapers to an outlet having a smalle
1. A burner apparatus, comprising: a jet pump located inside a burner housing, the jet pump having a combustion air inlet that receives combustion air, a chamber to receive the combustion air from the combustion air inlet, and a tapered portion of the chamber that tapers to an outlet having a smaller diameter than the diameter of the inlet, wherein the outlet allows the combustion air to be pumped into a mixing chamber;a flue gas inlet connected to the mixing chamber to allow flue gas to mix with the combustion air to form a combustion air-flue gas mixture; anda fuel inlet connected to the mixing chamber to allow fuel to mix with the combustion air/flue gas mixture to form a combustion air-flue gas-fuel mixture;wherein at least the jet pump outlet is positioned within a jet pump bell; andwherein the jet pump outlet is positioned between the flue gas inlet and the fuel inlet and wherein negative pressure, within the jet pump bell, generated from the inflow of combustion air from the combustion air outlet of the jet pump pulls flue gas from at least one of an exhaust stack or fired chamber. 2. The apparatus of claim 1, wherein further negative pressure is generated by a number of fuel inlets that direct fuel into the apparatus downstream from the jet pump bell. 3. The apparatus of claim 2, wherein the flue gas is educted and mixed with the combustion air to provide a combustion air-flue gas mixture. 4. The apparatus of claim 1, wherein the jet pump bell includes a tapered portion that tapers to an outlet having a smaller diameter than a maximum diameter of the jet pump bell and wherein the tapered portion of the jet pump bell is positioned after the outlet of the jet pump, and wherein the combustion air-flue gas mixture passes from the outlet of the jet pump bell into a burner throat where it is mixed with fuel to provide a flame at a burner outlet. 5. The apparatus of claim 1, wherein the jet pump bell includes a tapered portion that tapers to an outlet having a smaller diameter than a maximum diameter of the jet pump bell. 6. A burner apparatus, comprising: a jet pump located inside a burner housing, the jet pump having a combustion air inlet that receives combustion air, a chamber to receive the combustion air from the combustion air inlet, and a tapered portion of the chamber that tapers to an outlet having a smaller diameter than the diameter of the inlet, wherein the outlet allows the combustion air to be pumped into a mixing chamber; anda jet pump bell having a mixing chamber having a flue gas inlet connected thereto to allow flue gas to mix with the combustion air to form a combustion air-flue gas mixture and a fuel inlet connected to the mixing chamber to allow fuel to mix with the combustion air/flue gas mixture to form a combustion air-flue gas-fuel mixture. 7. The apparatus of claim 6, wherein a burner throat located downstream from the jet pump bell includes a number of fuel inlets provided downstream from the jet pump bell, but on an upstream portion of the burner throat. 8. The apparatus of claim 7, wherein a burner throat located downstream from the jet pump bell includes a plurality of fuel inlets arranged around the circumference of the burner throat. 9. The apparatus of claim 8, wherein the inlets are arranged generally uniformly spaced from each other. 10. The apparatus of claim 6, wherein a burner throat located downstream from the jet pump bell includes a number of fuel inlets provided downstream from the jet pump bell. 11. The apparatus of claim 10, wherein the fuel inlets provide fuel gas pressure and fuel velocity, when fuel is injected by the fuel inlets, which supplements negative pressure created by the jet pump that is present within the burner throat. 12. A burner apparatus, comprising: a jet pump bell located inside a burner housing, the jet pump bell having a mixing chamber therein for receiving combustion air and flue gas;a jet pump, located within the jet pump bell, having a combustion air inlet that receives combustion air from a combustion air fan, a chamber to receive the combustion air, and a tapered portion that tapers to an outlet having a smaller diameter than the diameter of the inlet; andwherein the jet pump bell has a flue gas inlet connected to the mixing chamber to allow flue gas to mix with the combustion air to form a combustion air-flue gas mixture, wherein combustion air exiting the jet pump creates a negative pressure in the mixing chamber such that the negative pressure draws flue gas into the mixing chamber that mixes with the combustion air and wherein the jet pump bell includes a fuel inlet connected to the mixing chamber to allow fuel to mix with the combustion air/flue gas mixture to form a combustion air-flue gas-fuel. 13. The apparatus of claim 12, wherein the jet pump bell includes a tapered portion that tapers to an outlet having a smaller diameter than a maximum diameter of the jet pump bell. 14. The apparatus of claim 13, wherein the outlet of the jet pump has a diameter that is smaller than the diameter of the outlet of the jet pump bell. 15. The apparatus of claim 12, wherein the apparatus also includes a burner throat that is downstream from the jet pump bell. 16. The apparatus of claim 15, wherein the burner throat has a number of fuel inlets for mixing fuel into a combustion-flue gas mixture. 17. The apparatus of claim 16, wherein the number of fuel inlets are arranged to inject fuel in a downstream direction. 18. The apparatus of claim 12, wherein the jet pump outlet is centrally positioned within the jet pump bell with respect to an elongate axis of the jet pump bell.
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이 특허에 인용된 특허 (15)
Benson Charles E. (Windham NH) Loftus Peter J. (Somerville MA) Cole Robert (Parsons KS) Wiener William A. (Parsons KS), Burner apparatus for reducing nitrogen oxides.
Schwartz Robert E. (Tulsa) Napier Samuel O. (Sapulpa) Jones Andrew P. (Bixby) Noble Roger K. (Tulsa OK), Low NOx formation burner apparatus and methods.
Syska Andrew J. (Marblehead MA) Ber Jnos M. (Winchester MA) Togan Majed A. (Avon CT) Moreland Donald P. (Hershey PA) Benson Charles E. (Windham CT), Staged air, recirculating flue gas low NOx burner.
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