[특허]Conical swirler for fuel injectors and combustor domes and methods of manufacturing the same

[미국특허] Conical swirler for fuel injectors and combustor domes and methods of manufacturing the same 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B05B-007/10
출원번호	US-0864211 (2004-06-09)
등록번호	US-8348180 (2013-01-08)
발명자 / 주소	Mao, Chien-Pei Short, John
출원인 / 주소	Delavan Inc
대리인 / 주소	Edwards Wildman Palmer LLP
인용정보	피인용 횟수 : 6 인용 특허 : 32

초록 ▼

A method of manufacturing gas and/or fuel swirlers for fuel injectors and combustor domes and cone-shaped swirlers so manufactured are disclosed. The disclosed conical swirlers feature cut-through slots on a cone-shaped body. The contour and spacing of the slots are configured and arranged to accommodate a wide range of requirements for fluid flow areas and swirl strengths. Preferably, the cone-shaped swirlers can be manufactured by wire EDM processing. More preferably, multiple cone-shaped swirlers can be manufactured simultaneously by nesting swirler blanks in a stack and wire EDM processing the stack as a unit. The cone-shaped pinwheel swirler fits well into various fuel injector heads, enabling the injectors to reduce the frontal surface area and flat area for minimal potential of carbon formation.

대표청구항 ▼

1. A fuel injector comprising: a) a heat shield defining a longitudinal axis and having a conical outer surface;b) an air cap located outboard of the heat shield and having a conical inner surface, wherein an axially converging airflow channel is defined between the conical outer surface of the heat shield and the conical inner surface of the air cap; andc) a conical air swirler disposed within the axially converging airflow channel and having an upstream inlet surface and a downstream outlet surface, wherein the upstream inlet surface of the conical air swirler defines a two-dimensional plane, the conical air swirler having a plurality of axially extending circumferentially spaced apart turning slots located between the upstream inlet surface and the downstream outlet surface, wherein the spaced apart turning slots are bounded in part by the conical outer surface of the heat shield and the conical inner surface of the air cap, and wherein the spaced apart turning slots are further bounded by turning vane walls that are oriented normal to the two-dimensional plane of the upstream inlet surface of conical swirler. 2. A fuel injector as recited in claim 1, wherein the turning vane walls are planar in relation to the longitudinal axis. 3. A fuel injector as recited in claim 1, wherein the turning vane walls are curved in relation to the longitudinal axis. 4. A fuel injector as recited in claim 1, wherein the air cap has an opening with a necking area, wherein the airflow channel is defined between the air cap and the heat shield and wherein the air cap is structured and arranged to provide a converging, radially inward portion upstream of the necking area and a diverging, radially outward portion downstream of the necking area. 5. A fuel injector as recited in claim 4, wherein the air cap has an inlet opening and an outlet opening, wherein the outlet opening has a necking area that is at least two times the area of the inlet opening at the inlet of the conical swirler. 6. A fuel injector as recited in claim 1, further comprising a plurality of inner and outer airflow openings structured and arranged to accommodate multiple conical swirlers that are substantially concentric with respect to each other. 7. A fuel injector as recited in claim 1, further comprising a fuel output portion that is structured and arranged to accommodate a cone-shaped swirler to provide a fuel spray that spreads downstream in a cone-shaped pattern in an axial direction. 8. A fuel injector as recited in claim 1, further comprising a fuel output portion including a fuel injection device of a type selected from the group consisting of simplex, duplex, dual orifice, and annular pre-filming, wherein the fuel injection device is integrated with the conical swirler in an injector assembly. 9. A fuel injector as recited in claim 1, further comprising a fuel output portion including a first nozzle to provide a primary fuel output spray, and a second nozzle to provide a secondary fuel output spray.

이 특허에 인용된 특허 (32) 인용/피인용 타임라인 분석

Marino, John A.; Strohl, Jr., Roderick G.; Yost, Robert B., Aggregate dryer burner.
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Bretz, David H., Air assist fuel nozzle.
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Simmons Harold C. (Richmond Heights OH) Conrad Robert R. (Chardon OH) Orav Mihkel (Euclid OH), Air-atomizing fuel nozzle.
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Cornwell, Michael Dale; Newman, Anthony William; Milosavljevic, Vladimir Dusan, Airblast fuel atomization system.
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Halvorsen Robert M. (Birmingham MI) Bradley Jerome R. (Sterling Heights MI) Long Gregory F. (Canton MI), Airblast fuel injector tip with integral cantilever spring fuel metering valve and method for reducing vapor lock from h.
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Mains Robert T. (Euclid OH), Airblast fuel nozzle with swirl slot metering valve.
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Hagar Donald K. (Emmaus PA), Apparatus and method for delivery of particulate fuel and transport air.
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Mandai Shigemi (Takasago JPX) Satoh Nobuo (Takasago JPX) Fukue Ichiro (Takasago JPX) Tanimura Satoshi (Takasago JPX), Burner apparatus.
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Kress Eric J. ; Joshi Narendra D., Dual fuel mixer for gas turbine combustor.
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Simon Burkhard (Rhrmoos DEX) Joos Franz (Munich DEX), Fuel injection apparatus and associated method.
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Kevin D. Brundish GB; Christopher W. Wilson GB; John R. Tippetts GB, Fuel injector.
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Lee Fei P. (Novi MI) Guzowski Mike (Canton MI), Fuel injector assembly with first and second fuel injectors and inner, outer, and intermediate air discharge chambers.
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Steinhorsson, Erlendur; Benjamin, Michael A.; Barnhart, David R., Fuel nozzle for turbine combustion engines having aerodynamic turning vanes.
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Prociw Lev Alexander,CAX ; Sampath Parthasarathy,CAX, Gas turbine fuel injector.
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Mansour, Adel B.; Benjamin, Michael A.; Burke, Thomas A.; Odar, Andrew M.; Savel, Barry W., Hybrid atomizing fuel nozzle.
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Michael Jerome Foust ; Hukam Chand Mongia, Method and apparatus for controlling combustor emissions.
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Michael Jerome Foust ; Hukam Chand Mongia, Method and apparatus for mixing fuel to decrease combustor emissions.
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Mancini, Alfred A.; Vermeersch, Michael L.; Thomsen, Duane D.; Danis, Allen M.; Cooper, James N.; Lohmueller, Steven J.; Mongia, Hukam C., Method and apparatus to decrease combustor emissions.
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Halvorsen Robert M. (Birmingham MI) Bradley Jerome R. (Sterling Heights MI) Long Gregory F. (Canton MI), Method for making a fuel injector.
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Mark David Durbin ; Timothy James Held ; Hukam Chand Mongia, Mixer having multiple swirlers.
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Prociw,Lev Alexander; Brand,Joseph Horace, Modular fuel nozzle and method of making.
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Hull Charles W. ; Lockard Michael S. ; Almquist Thomas A., Molding method, apparatus, and device including use of powder metal technology for forming a molding tool with thermal control elements.
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Calvez, Gwénaëlle; Feder, Didier; Michau, Marion; Ravet, Frédéric; Rodrigues, José; Schuler, Alain; Tiepel, Alain; Viguier, Christophe, Multimode system for injecting an air/fuel mixture into a combustion chamber.
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Mao, Chien-Pei; Short, John Earl; Thomson, Neal A., Multiplex injector.
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Wulf James B. (Williamsville NY), Radial turbine nozzle vane.
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Sampath Parthasarathy,CAX ; Kostka Richard Alan,CAX, Simple low cost fuel nozzle support.
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Koblish Theodore R. (Birmingham MI) Bell Leonard D. (Ferndale MI), Small airblast fuel nozzle with high efficiency inner air swirler.
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Koblish Theodore R. (Birmingham MI) Bell Leonard D. (Ferndale MI), Small airblast fuel nozzle with high efficiency inner air swirler.
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Tanaka Toshiyuki (Yokohama JPX) Kodera Akira (Yokohama JPX) Aishima Shizuo (Yokohama JPX), Spray nozzle unit.
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Mensink Daniel L. (3578 Gregory La. Lynchburg VA 24503), Swirling structure for mixing two concentric fluid flows at nozzle outlet.
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Pelletier Robert R. ; Patwari Kiran, Thermal gradient dispersing heatshield assembly.
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Alberti Marco,ITX ; Rizzi Roberto,ITX ; Martano Marcello,ITX ; De Michele Gennaro,ITX ; Ligasacchi Sergio,ITX, Three-stage low NOx burner for burning solid, liquid and gaseous fuels.
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이 특허를 인용한 특허 (6) 인용/피인용 타임라인 분석

Mao, Chien-Pei; Short, John Earl, Conical swirler for fuel injectors and combustor domes and methods of manufacturing the same.
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Okamoto, Yoshio; Yoshimura, Kazuki; Maekawa, Noriyuki; Kobayashi, Nobuaki; Ishii, Eiji; Saito, Takahiro, Fuel injection valve.
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Stastny, Honza; Patel, Bhawan B; Greer, John; Sampath, Parthasarathy, Fuel nozzle and method of repair.
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Hoke, James B.; Proscia, William, Fuel-air mixture distribution for gas turbine engine combustors.
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Weierstall, Uwe; Wang, Dingjie; Spence, John, Nozzle apparatus and methods for use thereof.
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Patel, Nayan Vinodbhai; Kim, Kwanwoo; Sutton, Chad Holden; Thomsen, Duane Douglas; Gonyou, Craig Alan; Abramson, Harris Daniel; Russo, James A.; Stowers, Robert Andrew; Wang, Shanwu; Wang, Anquan, Sealed conical-flat dome for flight engine combustors.
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[미국특허] Conical swirler for fuel injectors and combustor domes and methods of manufacturing the same 원문보기

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[미국특허] Conical swirler for fuel injectors and combustor domes and methods of manufacturing the same 원문보기

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