[특허]Airblast fuel nozzle with swirl slot metering valve

[미국특허] Airblast fuel nozzle with swirl slot metering valve 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B05B-007/10
출원번호	US-0373835 (1995-01-17)
발명자 / 주소	Mains Robert T. (Euclid OH)
출원인 / 주소	Parker-Hannifin Corporation (Cleveland OH 02)
인용정보	피인용 횟수 : 29 인용 특허 : 0

초록 ▼

An airblast fuel nozzle has an injector head with an extension or support strut. An annular valve spool with a fuel discharge orifice is fixed to the head and a metering assembly surrounds the valve spool. The metering assembly includes an axially-slidable annular valve sleeve and a metal bellows. The bellows, a compression spring, and one or more shims between the valve spool and the injector head provide a preset bias on the valve sleeve such that the valve sleeve initially closes or minimizes the fuel metering area through longitudinally-extending fuel swirl slots spaced about the valve spool at the discharge orifice. When fuel under pressure flows through the injector, the fuel pressure overcomes the preset bias of the sleeve and moves the valve sleeve axially with respect to the valve spool, thereby increasing the fuel metering area through the fuel swirl slots and allowing fuel to flow (with a swirling component) therethrough. The fuel flows through a convoluted path through a fuel circuit surrounding the bellows and valve sleeve, around the bellows, and between the valve sleeve and valve spool to the fuel swirl slots. The convoluted fuel path and fuel metering at the tip of the fuel injector reduces vaporization and coking of the fuel. The bellows, springs and shims provide for easily configuring the metering valve assembly to optimize fuel flow for the particular requirements of the engine.

대표청구항 ▼

An airblast fuel nozzle having an injector head with a fuel inlet and a longitudinal axis, said injector head comprising: an annular valve spool fixed relative to said head and defining an axially-extending inner air chamber with an air inlet orifice and an air discharge orifice, and having longitudinally-extending fuel slots spaced about an outer surface of the spool proximate the air discharge orifice, a metering valve assembly surrounding said valve spool, said metering valve assembly including an axially slidable annular valve sleeve and an annular bellows having circumferential convolutions, said bellows being attached at one end to said injector head and at the other end to said valve sleeve for providing a preset axial bias on said valve sleeve, said valve sleeve defining a fuel path from said fuel inlet to said fuel slots, the relative axial displacement of said valve sleeve with respect to said valve spool varying the fuel metering area through said fuel slots.

이 특허를 인용한 특허 (29) 인용/피인용 타임라인 분석

Howell Stephen J., Air modulated carburetor with axially moveable fuel injector tip and swirler assembly responsive to fuel pressure.
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Mao, Chien-Pei; Short, John, Conical swirler for fuel injectors and combustor domes and methods of manufacturing the same.
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Mao, Chien-Pei; Short, John Earl, Conical swirler for fuel injectors and combustor domes and methods of manufacturing the same.
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Grinaski, Timothy, Dehider regulator valve.
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Unger,Reuven Z. M.; Collins,Joshua E., Dual mode compressor with automatic compression ratio adjustment for adapting to multiple operating conditions.
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Thomson, Neal A.; Hall, Troy; Haggerty, Daniel T.; Caples, Mark Alan, Flexure seal for fuel injection nozzle.
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Low, Kevin Joseph; Hoke, James B.; Kojovic, Aleksandar; Manninen, Andrew; Niemeyer, Sander, Flow modifier for combustor fuel nozzle tip.
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Erlendur Steinthorsson ; Michael A. Benjamin ; David R. Barnhart, Fuel atomization method for turbine combustion engines having aerodynamic turning vanes.
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Rohrssen, Robert Joseph; Cihlar, David William; Melton, Patrick Benedict; Stoia, Lucas John, Fuel delivery system with moveably attached fuel tube.
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Sampath,Parthasarathy; Zheng,Qing Ping, Fuel injector head.
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Baasch, Oswald; Flynn, Douglas Joseph; Rucker, Laura Beth; Wilson, Shane, Fuel injector nozzle adapter.
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Baasch, Oswald; Rucker, Laura Beth; Flynn, Douglas Joseph; Wilson, Shane, Fuel injector nozzle adapter.
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Baasch, Oswald; Rucker, Laura Beth; Flynn, Douglas Joseph; Wilson, Shane, Fuel injector nozzle adapter.
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Baasch,Oswald; Flynn,Douglas Joseph; Rucker,Laura Beth; Wilson,Shane, Fuel injector nozzle adapter.
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Popovic, Predrag; Kraemer, Gilbert Otto; Ross, William Thomas; Belvaev, Vladimir, Fuel nozzle and method for operating a combustor.
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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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Steinthorsson, Erlendur; Benjamin, Michael A.; Barnhart, David R., Fuel nozzle for turbine combustion engines having aerodynamic turning vanes.
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Oskam, Gareth W., Gas turbine and fuel injector for the same.
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Popovic, Predrag; Baruah, Abinash; Kraemer, Gilbert Otto; Ross, William Thomas, Gas turbine combustor having a fuel nozzle for flame anchoring.
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Johnson, Bradley C.; Lyda, Randolph T.; Brandt, Ryan W.; Ricciardo, Mark J., Injector assembly for a rocket engine.
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Baasch, Oswald, Intake manifold plate adapter.
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Prociw, Lev Alexander; Kojovic, Aleksandar; Shafique, Harris, Internal fuel manifold with airblast nozzles.
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Oskam, Gareth W., Lean direct fuel injector.
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Oskam, Gareth W., Method of operating a gas turbine engine.
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Stotts,Robert E.; Drake,Brian T.; Scheuerman,Curtis H.; Patwari,Kiran, Nozzle assembly with fuel tube deflector.
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Mansour, Adel B.; Benjamin, Michael A., Pure airblast nozzle.
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Ohri, Rajeev; Parker, David M., Swirler assembly with improved vibrational response.
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Goodwin, Martin S., Swirler for a fuel injector.
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Behnke, Paul W.; Koren, Matthew J., Vertical double suction pump enclosing tube seal.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Airblast fuel nozzle with swirl slot metering valve 원문보기