# US 2010/0167222 A1 · Fuel nozzle for use in a burner > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0167222 A1 - Document ID: US20100167222A1 - Status: Published application - Kind: A1 - Application number: 12/564,369 - Filed: 2009-09-22 - Published: 2010-07-01 - Earliest claimed: 2008-09-22 - Inventors: Darsell Karringten; William T. Kelly - Web page: https://patentgrep.com/patent/US20100167222A1 ## CPC - F23C 7/008: {Flow control devices (F23C7/006 takes precedence)} - F23D 14/24: at least one of the fluids being submitted to a swirling motion - F23D 14/70: Baffles or like flow-disturbing devices - F23L 1/00: Passages or apertures for delivering primary air for combustion (baffles or deflectors in air inlets F23M9/02) - F23L 2900/07006: Control of the oxygen supply - Y02E 20/34: Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery - F23C: METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN {A CARRIER GAS OR} AIR (burners F23D) - F23D: BURNERS - F23L: SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ({air-supply arrangements for fluent fuels F23C;} firebridges with means for feeding air or steam F23M3/04; baffles or shields with air supply passages F23M9/04); VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS {(dampers and throat restrictors for open fire-places F24; air inlet valves for open fire fronts F24)}; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A fuel nozzle for use in a burner comprises a main body having an inlet end and an outlet end and defining a longitudinal axis. A fuel passageway has a fuel receiving inlet, and a fuel emitting outlet for delivering fuel to a mixing chamber of the burner. A first air flow channel having an inlet, and an outlet disposed adjacent the fuel emitting outlet for delivering air to the mixing chamber. The portion of the first air flow channel adjacent the outlet is oriented obliquely to the longitudinal axis. A second air flow channel has an inlet, and an outlet disposed adjacent the fuel emitting outlet for delivering air to the mixing chamber. The first air flow channel and the second air flow channel generally surround the fuel passageway, and are disposed on the exterior of the main body. ## Claims ### Claim 1 A fuel nozzle for use in a burner, said fuel nozzle comprising: a main body having an inlet end and an outlet end and defining a longitudinal axis extending between said inlet end and said outlet end; a fuel passageway having a fuel receiving inlet, and a fuel emitting outlet for delivering fuel to a mixing chamber of said burner; and, a first air flow channel having an inlet, and an outlet disposed adjacent said fuel emitting outlet for delivering air to said mixing chamber; wherein the portion of said first air flow channel adjacent said outlet is oriented obliquely to said longitudinal axis. ### Claim 2 (depends on 1) The fuel nozzle of claim 1, wherein said main body comprises an elongate main body. ### Claim 3 (depends on 2) The fuel nozzle of claim 2, wherein said elongate main body is circular in cross-section. ### Claim 4 (depends on 1) The fuel nozzle of claim 1, wherein said fuel passageway is a central fuel passageway. ### Claim 5 (depends on 4) The fuel nozzle of claim 4, wherein said fuel nozzle is substantially straight. ### Claim 6 (depends on 5) The fuel nozzle of claim 5, wherein said central passageway is substantially straight. ### Claim 7 (depends on 1) The burner of claim 1, wherein substantially all of said first air flow channel is oriented obliquely to said longitudinal axis. ### Claim 8 (depends on 7) The burner of claim 7, wherein said first air flow channel is helically shaped. ### Claim 9 (depends on 1) The burner of claim 1, wherein said inlet of said first air flow channel has a cross-sectional area that is larger than the cross-sectional area of said outlet of said first air flow channel. ### Claim 10 (depends on 6) The burner of claim 6, wherein the ratio of the cross-sectional area of said inlet of said first air flow channel to the cross-sectional area of said outlet of said first air flow channel is about 1.6 to 1. ### Claim 11 (depends on 10) The burner of claim 10, wherein the cross-sectional area of said first air flow channel decreases from said inlet to said outlet. ### Claim 12 (depends on 11) The burner of claim 11, wherein the width of said first air flow channel decreases from said inlet to said outlet. ### Claim 13 (depends on 12) The burner of claim 12, wherein the depth of said first air flow channel decreases from said inlet to said outlet. ### Claim 14 (depends on 13) The fuel nozzle of claim 13, further comprising a second air flow channel having an inlet, and an outlet disposed adjacent said fuel emitting outlet for delivering air to said mixing chamber. ### Claim 15 (depends on 14) The fuel nozzle of claim 14, further comprising a third air flow channel having an inlet, and an outlet disposed adjacent said fuel emitting outlet for delivering air to said mixing chamber, a fourth air flow channel having an inlet, and an outlet disposed adjacent said fuel emitting outlet for delivering air to said mixing chamber, and a fifth air flow channel having an inlet, and an outlet disposed adjacent said fuel emitting outlet for delivering air to said mixing chamber. ### Claim 16 (depends on 15) The fuel nozzle of claim 15, wherein said plurality of helically shaped air flow channels is substantially parallel to adjacent helically shaped air flow channels. ### Claim 17 (depends on 16) The fuel nozzle of claim 16, wherein said second air flow channel, said third air flow channel, said fourth air flow channel, and said fifth air flow channel are each helically shaped. ### Claim 18 (depends on 2) The fuel nozzle of claim 2, wherein said elongate main body comprises a narrow back portion and a wider front portion. ### Claim 19 (depends on 18) The fuel nozzle of claim 18, wherein said elongate main body further comprises a sloped portion interconnecting said narrow back portion and said wider front portion. ### Claim 20 (depends on 19) The burner of claim 19, wherein said sloped portion of said fuel nozzle engages in sealing contact with a co-operating receiving surface on said burner. ### Claim 21 (depends on 18) The burner of claim 18, wherein said fuel nozzle comprises a rear portion that is threaded to engage a co-operating nut to thereby retain said fuel nozzle in place on said burner. ### Claim 22 (depends on 1) The fuel nozzle of claim 1, further comprising a fuel nozzle tip mounted in removable and replaceable relation in the front end of said main body. ### Claim 23 A fuel nozzle for use in a burner, said fuel nozzle comprising: a main body having an inlet end and an outlet end and defining a longitudinal axis extending between said inlet end and said outlet end; a fuel passageway having a fuel receiving inlet, and a fuel emitting outlet for delivering fuel to a mixing chamber of said burner; and, a first air flow channel disposed on the exterior of said elongate main body, and having an inlet, and an outlet disposed adjacent said fuel emitting outlet for delivering air to said mixing chamber. ### Claim 24 (depends on 23) The fuel nozzle of claim 23, wherein said main body comprises an elongate main body. ### Claim 25 (depends on 24) The fuel nozzle of claim 24, wherein said elongate main body is circular in cross-section. ### Claim 26 (depends on 23) The fuel nozzle of claim 23, wherein said fuel passageway is a central fuel passageway. ### Claim 27 (depends on 26) The fuel nozzle of claim 26, wherein said fuel nozzle is substantially straight. ### Claim 28 (depends on 27) The fuel nozzle of claim 27, wherein said central passageway is substantially straight. ### Claim 29 (depends on 23) The burner of claim 23, wherein substantially all of said first air flow channel is oriented obliquely to said longitudinal axis. ### Claim 30 (depends on 29) The burner of claim 29, wherein said first air flow channel is helically shaped. ### Claim 31 (depends on 23) The burner of claim 23, wherein said inlet of said first air flow channel has a cross-sectional area that is larger than the cross-sectional area of said outlet of said first air flow channel. ### Claim 32 (depends on 28) The burner of claim 28, wherein the ratio of the cross-sectional area of said inlet of said first air flow channel to the cross-sectional area of said outlet of said first air flow channel is about 1.6 to 1. ### Claim 33 (depends on 32) The burner of claim 32, wherein the cross-sectional area of said first air flow channel decreases from said inlet to said outlet. ### Claim 34 (depends on 33) The burner of claim 33, wherein the width of said first air flow channel decreases from said inlet to said outlet. ### Claim 35 (depends on 34) The burner of claim 34, wherein the depth of said first air flow channel decreases from said inlet to said outlet. ### Claim 36 (depends on 35) The fuel nozzle of claim 35, further comprising a second air flow channel having an inlet, and an outlet disposed adjacent said fuel emitting outlet for delivering air to said mixing chamber. ### Claim 37 (depends on 36) The fuel nozzle of claim 36, further comprising a third air flow channel having an inlet, and an outlet disposed adjacent said fuel emitting outlet for delivering air to said mixing chamber, a fourth air flow channel having an inlet, and an outlet disposed adjacent said fuel emitting outlet for delivering air to said mixing chamber, and a fifth air flow channel having an inlet, and an outlet disposed adjacent said fuel emitting outlet for delivering air to said mixing chamber. ### Claim 38 (depends on 37) The fuel nozzle of claim 37, wherein said plurality of helically shaped air flow channels is substantially parallel to adjacent helically shaped air flow channels. ### Claim 39 (depends on 38) The fuel nozzle of claim 38, wherein said second air flow channel, said third air flow channel, said fourth air flow channel, and said fifth air flow channel are each helically shaped. ### Claim 40 (depends on 24) The fuel nozzle of claim 24, wherein said elongate main body comprises a narrow back portion and a wider front portion. ### Claim 41 (depends on 40) The fuel nozzle of claim 40, wherein said elongate main body further comprises a sloped portion interconnecting said narrow back portion and said wider front portion. ### Claim 42 (depends on 41) The burner of claim 41, wherein said sloped portion of said fuel nozzle engages in sealing contact with a co-operating receiving surface on said burner. ### Claim 43 (depends on 40) The burner of claim 40, wherein said fuel nozzle comprises a rear portion that is threaded to engage a co-operating nut to thereby retain said fuel nozzle in place on said burner. ### Claim 44 (depends on 23) The fuel nozzle of claim 23, further comprising a fuel nozzle tip mounted in removable and replaceable relation in the front end of said main body. ### Claim 45 A fuel nozzle for use in a burner, said fuel nozzle comprising: a main body having an inlet end and an outlet end and defining a longitudinal axis extending between said inlet end and said outlet end; a fuel passageway having a fuel receiving inlet, and a fuel emitting outlet for delivering fuel to a mixing chamber of said burner; a first air flow channel having an inlet, and an outlet disposed adjacent said fuel emitting outlet for delivering air to said mixing chamber; and, a second air flow channel having an inlet, and an outlet disposed adjacent said fuel emitting outlet for delivering air to said mixing chamber; wherein said first air flow channel and said second air flow channel generally surround said fuel passageway. ### Claim 46 (depends on 45) The fuel nozzle of claim 45, wherein said main body comprises an elongate main body. ### Claim 47 (depends on 46) The fuel nozzle of claim 46, wherein said elongate main body is circular in cross-section. ### Claim 48 (depends on 45) The fuel nozzle of claim 45, wherein said fuel passageway is a central fuel passageway. ### Claim 49 (depends on 48) The fuel nozzle of claim 48, wherein said fuel nozzle is substantially straight. ### Claim 50 (depends on 49) The fuel nozzle of claim 49, wherein said central passageway is substantially straight. ### Claim 51 (depends on 45) The burner of claim 45, wherein substantially all of said first air flow channel is oriented obliquely to said longitudinal axis. ### Claim 52 (depends on 51) The burner of claim 51, wherein said first air flow channel is helically shaped. ### Claim 53 (depends on 45) The burner of claim 45, wherein said inlet of said first air flow channel has a cross-sectional area that is larger than the cross-sectional area of said outlet of said first air flow channel. ### Claim 54 (depends on 50) The burner of claim 50, wherein the ratio of the cross-sectional area of said inlet of said first air flow channel to the cross-sectional area of said outlet of said first air flow channel is about 1.6 to 1. ### Claim 55 (depends on 54) The burner of claim 54, wherein the cross-sectional area of said first air flow channel decreases from said inlet to said outlet. ### Claim 56 (depends on 55) The burner of claim 55, wherein the width of said first air flow channel decreases from said inlet to said outlet. ### Claim 57 (depends on 56) The burner of claim 56, wherein the depth of said first air flow channel decreases from said inlet to said outlet. ### Claim 58 (depends on 57) The fuel nozzle of claim 57, further comprising a second air flow channel having an inlet, and an outlet disposed adjacent said fuel emitting outlet for delivering air to said mixing chamber. ### Claim 59 (depends on 58) The fuel nozzle of claim 58, further comprising a third air flow channel having an inlet, and an outlet disposed adjacent said fuel emitting outlet for delivering air to said mixing chamber, a fourth air flow channel having an inlet, and an outlet disposed adjacent said fuel emitting outlet for delivering air to said mixing chamber, and a fifth air flow channel having an inlet, and an outlet disposed adjacent said fuel emitting outlet for delivering air to said mixing chamber. ### Claim 60 (depends on 59) The fuel nozzle of claim 59, wherein said plurality of helically shaped air flow channels is substantially parallel to adjacent helically shaped air flow channels. ### Claim 61 (depends on 60) The fuel nozzle of claim 60, wherein said second air flow channel, said third air flow channel, said fourth air flow channel, and said fifth air flow channel are each helically shaped. ### Claim 62 (depends on 46) The fuel nozzle of claim 46, wherein said elongate main body comprises a narrow back portion and a wider front portion. ### Claim 63 (depends on 62) The fuel nozzle of claim 62, wherein said elongate main body further comprises a sloped portion interconnecting said narrow back portion and said wider front portion. ### Claim 64 (depends on 19) The burner of claim 19, wherein said sloped portion of said fuel nozzle engages in sealing contact with a co-operating receiving surface on said burner. ### Claim 65 (depends on 18) The burner of claim 18, wherein said fuel nozzle comprises a rear portion that is threaded to engage a co-operating nut to thereby retain said fuel nozzle in place on said burner. ### Claim 66 (depends on 1) The fuel nozzle of claim 1, further comprising a fuel nozzle tip mounted in removable and replaceable relation in the front end of said main body.