[특허]Profile matched diffuser

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IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F02C-003/00
출원번호	US-0610912 (1990-11-09)
발명자 / 주소	Widener Stanley K. (San Antonio TX) Dodds Willard J. (West Chester OH) Taylor Jack R. (Cincinnati OH)
출원인 / 주소	General Electric Company (Cincinnati OH 02)
인용정보	피인용 횟수 : 42 인용 특허 : 0

초록 ▼

A method of diffusing airflow includes diffusing first and second airflow portions at first and second diffusion rates, respectively, which are unequal for improving pressure recovery. An exemplary diffuser for practicing the invention includes first and second channels separated by a splitter for separately diffusing first and second airflow portions, respectively. The first and second channels have first and second area ratios, respectively, which are unequal for obtaining increased pressure recovery. In the preferred embodiment, the first and second area ratios are preselected for obtaining substantially symmetrical airflow streamlines over a leading edge of the splitter.

대표청구항 ▼

In a gas turbine engine diffuser for diffusing compressed airflow received from a compressor, said compressor having a diffuser first channel and a diffuser second channel disposed in parallel flow communication relative to a flow splitter having a leading edge, a method of diffusing said airflow comprising: diffusing a first portion of said airflow in said first channel at a first rate of diffusion; diffusing a second portion of said airflow in said second channel at a second rate of diffusion; and said first and second diffusion rates being unequal. A diffuser for a gas turbine engine having a compressor providing compressed airflow comprising: a first wall; a second wall spaced from said first wall; a flow splitter having a leading edge and an aft end and disposed between said first and second walls to define with said first wall a first channel therebetween for diffusing a first portion of said airflow channeled therethrough, and to define with said second wall a second channel therebetween for diffusing a second portion of said airflow channeled therethrough; said first channel having a first inlet defined between said first wall and said splitter leading edge for receiving said airflow first portion, and a first outlet defined between said first wall and said splitter aft end, said first inlet having a first inlet flow area and said first outlet having a first outlet flow area, said first outlet flow area over said first inlet flow area defining a first area ratio for diffusing said airflow first portion in said channel; said second channel having a second inlet defined between said second wall and said splitter leading edge for receiving said second airflow portion, and a second outlet defined between said second wall and said splitter aft end, said second inlet having a second inlet flow area and said second outlet having a second outlet flow area, said second outlet flow area over said second inlet flow area defining a second area ratio for diffusing said airflow second portion in said second channel; and said first and second area ratios being unequal.

이 특허를 인용한 특허 (42)

Rice, Edward C.; King, Brian P., Apparatus for forming a combustion mixture in a gas turbine engine.
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Flanagan, James Scott; McMahan, Kevin Weston; LeBegue, Jeffrey Scott; Pentecost, Ronnie Ray, Articulated transition duct in turbomachine.
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Clemen, Carsten, Assembly of an axial turbomachine and method for manufacturing an assembly of this type.
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Decker, John J.; Breeze-Stringfellow, Andrew; Szucs, Peter N., Compressor outlet guide vane and diffuser assembly.
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Flanagan, James Scott; LeBegue, Jeffrey Scott; McMahan, Kevin Weston; Dillard, Daniel Jackson; Pentecost, Ronnie Ray, Convolution seal for transition duct in turbine system.
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Flanagan, James Scott; LeBegue, Jeffrey Scott; McMahan, Kevin Weston; Dillard, Daniel Jackson; Pentecost, Ronnie Ray, Convolution seal for transition duct in turbine system.
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Daguenet, Luc Henri Claude, Device for guiding a stream of air entering a combustion chamber of a turbomachine.
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Rice, Edward C.; Froemming, Kenneth W., Diffuser for a gas turbine engine.
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Pidcock,Anthony; Close,Desmond, Diffuser for gas turbine engine.
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Wurz, Dieter; Hartig, Stefan, Duct having flow conducting surfaces.
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Owczarek Jerzy A., Exhaust flow diffuser for a steam turbine.
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Flanagan, James Scott; LeBegue, Jeffrey Scott; McMahan, Kevin Weston; Dillard, Daniel Jackson; Pentecost, Ronnie Ray, Flexible metallic seal for transition duct in turbine system.
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Rice, Edward Claude; Bloom, Stuart; Louie, John R., Flow splitter for gas turbine engine.
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Drake, Christopher; Lyons, Christopher B, Flow splitting first vane support for gas turbine engine.
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Graziosi, Paolo; Warren, Jr., Richard Edwin; Fric, Thomas Frank; Mani, Ramani; Hofer, Douglas Carl, Fluidic actuation for improved diffuser performance.
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Pidcock,Anthony; Close,Desmond, Gas diffusion arrangement.
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Alary Jean-Paul D. (Saint Maur Des Fosses FRX) Desaulty Michel (Vert Saint Denis FRX) Sandelis Denis J. M. (Nangis FRX) Schroer Pierre (Brunoy FRX), Gas turbine diffuser.
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Alary Jean-Paul D. (Saint Maur des Fosses FRX) Barbier Gerard Y. G. (Morangis FRX) Delahaye Corine G. (Mormant FRX) Havard Jacques G. W. R. (Moissy Cramayel FRX) Mackovic Paul (Villiers S/Marne FRX) , Gas turbine engine having an integral guide vane and separator diffuser.
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Poccia, Nicholas Philip; Wendell, Franklin Timothy; Amyot, Jacques Leo; Fernandes, Carlos Serafim Albuquerque; Kenny, III, Laurence Ambrose, Gas turbine exhaust diffuser.
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Ioan Sasu CA; Andre LeBlanc CA; Michel Bellerose CA, Integrated duct diffuser.
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Flanagan, James Scott; LeBegue, Jeffrey Scott; McMahan, Kevin Weston; Dillard, Daniel Jackson; Pentecost, Ronnie Ray, Leaf seal for transition duct in turbine system.
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Flanagan, James Scott; LeBegue, Jeffrey Scott; McMahan, Kevin Weston; Pentecost, Ronnie Ray, Load member for transition duct in turbine system.
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Widener,Stanley Kevin, Method of cooling centerbody of premixing burner.
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Hofer, Douglas Carl; Brown, Daniel Mark; Blackwell, Scott William; Lathrop, Norman Douglas; Sharrow, Edward John, Methods and apparatus for assembling turbine engines.
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Graves, Charles B.; Bloom, Stuart M.; Wicksall, Donald M.; Determan, Jacob E., Multi-passage diffuser with reactivated boundary layer.
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Eastwood, Jonathan J.; Hyland, Dave J.; Dale, Timothy, Outer diffuser case for a gas turbine engine.
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Widener,Stanley Kevin, Premixing burner with impingement cooled centerbody and method of cooling centerbody.
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Widener, Stanley Kevin; Davis, Jr., Lewis Berkley, Secondary fuel injection from stage one nozzle.
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LeBegue, Jeffrey Scott; McMahan, Kevin Weston; Pentecost, Ronnie Ray; Flanagan, James Scott, Support assembly for transition duct in turbine system.
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LeBegue, Jeffrey Scott; McMahan, Kevin Weston; Pentecost, Ronnie Ray; Flanagan, James Scott, Support assembly for transition duct in turbine system.
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Burd, Steven W., Thermal barrier coating of a combustor dilution hole.
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Hardin, James R., Tilted cone diffuser for use with an exhaust system of a turbine.
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Flanagan, James Scott; McMahan, Kevin Weston; LeBegue, Jeffrey Scott, Transition duct assembly.
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Flanagan, James Scott; McMahan, Kevin Weston; LeBegue, Jeffrey Scott, Transition duct assembly.
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McMahan, Kevin Weston; LeBegue, Jeffrey Scott; Flanagan, James Scott, Transition duct assembly.
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Flanagan, James Scott; McMahan, Kevin Weston; LeBegue, Jeffrey Scott, Transition duct assembly with late injection features.
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LeBegue, Jeffrey Scott; McMahan, Kevin Weston; Flanagan, James Scott, Transition duct assembly with late injection features.
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McMahan, Kevin Weston; Schott, Carl Gerard; Ingram, Clint Luigie; Siden, Gunnar Leif; Pierre, Sylvain, Transition duct assembly with modified trailing edge in turbine system.
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McMahan, Kevin Weston; LeBegue, Jeffrey Scott; Maldonado, Jaime Javier; Dillard, Daniel Jackson; Flanagan, James Scott, Transition duct with divided upstream and downstream portions.
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LeBegue, Jeffrey Scott; Pentecost, Ronnie Ray; Flanagan, James Scott; Kim, Won-Wook; McMahan, Kevin Weston, Transition duct with late injection in turbine system.
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Lin Edward J. C. ; Warren ; Jr. Richard Edwin ; Vandervort Christian L., Tri-passage diffuser for a gas turbine.
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McMahan, Kevin Weston; Dillard, Daniel Jackson, Turbine system.
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