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EP0321379A3 - Convoluted plate with vortex generator - Google Patents

  • ️Wed Jul 10 1991

EP0321379A3 - Convoluted plate with vortex generator - Google Patents

Convoluted plate with vortex generator Download PDF

Info

Publication number
EP0321379A3
EP0321379A3 EP19880630118 EP88630118A EP0321379A3 EP 0321379 A3 EP0321379 A3 EP 0321379A3 EP 19880630118 EP19880630118 EP 19880630118 EP 88630118 A EP88630118 A EP 88630118A EP 0321379 A3 EP0321379 A3 EP 0321379A3 Authority
EP
European Patent Office
Prior art keywords
diffuser
vortex generator
stall
vortices
convoluted
Prior art date
1987-12-15
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP19880630118
Other languages
German (de)
French (fr)
Other versions
EP0321379A2 (en
EP0321379B1 (en
Inventor
Walter Michael Presz, Jr.
Robert William Paterson
Michael Joseph Werle
Robert Herman Ealba
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RTX Corp
Original Assignee
United Technologies Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
1987-12-15
Filing date
1988-06-30
Publication date
1991-07-10
1987-12-15 Priority claimed from US07/132,395 external-priority patent/US4971768A/en
1988-06-30 Application filed by United Technologies Corp filed Critical United Technologies Corp
1989-06-21 Publication of EP0321379A2 publication Critical patent/EP0321379A2/en
1991-07-10 Publication of EP0321379A3 publication Critical patent/EP0321379A3/en
1995-03-29 Application granted granted Critical
1995-03-29 Publication of EP0321379B1 publication Critical patent/EP0321379B1/en
2008-06-30 Anticipated expiration legal-status Critical
Status Expired - Lifetime legal-status Critical Current

Links

  • 238000009792 diffusion process Methods 0.000 abstract 1
  • 238000011144 upstream manufacturing Methods 0.000 abstract 1

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
    • F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
    • F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
    • F01N3/28—Construction of catalytic reactors
    • F01N3/2892—Exhaust flow directors or the like, e.g. upstream of catalytic device
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/432—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction with means for dividing the material flow into separate sub-flows and for repositioning and recombining these sub-flows; Cross-mixing, e.g. conducting the outer layer of the material nearer to the axis of the tube or vice-versa
    • B01F25/4322—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction with means for dividing the material flow into separate sub-flows and for repositioning and recombining these sub-flows; Cross-mixing, e.g. conducting the outer layer of the material nearer to the axis of the tube or vice-versa essentially composed of stacks of sheets, e.g. corrugated sheets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15D—FLUID DYNAMICS, i.e. METHODS OR MEANS FOR INFLUENCING THE FLOW OF GASES OR LIQUIDS
    • F15D1/00—Influencing flow of fluids
    • F15D1/0015—Whirl chambers, e.g. vortex valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F2025/91—Direction of flow or arrangement of feed and discharge openings
    • B01F2025/913—Vortex flow, i.e. flow spiraling in a tangential direction and moving in an axial direction

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Health & Medical Sciences (AREA)
  • Thermal Sciences (AREA)
  • Toxicology (AREA)
  • Combustion & Propulsion (AREA)
  • Dispersion Chemistry (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Nozzles (AREA)

Abstract

A thin, convoluted wall member (314) disposed upstream of the inlet (312) of a diffuser (304) generates large-scale vortices (322) having axes in the downstream direction. The vortices (322) enhance mixing within the diffuser (304) and can also energize the boundary layer, thereby improving diffuser performance and delaying the onset of stall. Greater diffusion angles without stall are possible. The member (314) itself creates low losses.

EP88630118A 1987-12-15 1988-06-30 Convoluted plate with vortex generator Expired - Lifetime EP0321379B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/132,395 US4971768A (en) 1987-11-23 1987-12-15 Diffuser with convoluted vortex generator
US132395 1987-12-15

Publications (3)

Publication Number Publication Date
EP0321379A2 EP0321379A2 (en) 1989-06-21
EP0321379A3 true EP0321379A3 (en) 1991-07-10
EP0321379B1 EP0321379B1 (en) 1995-03-29

Family

ID=22453840

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88630118A Expired - Lifetime EP0321379B1 (en) 1987-12-15 1988-06-30 Convoluted plate with vortex generator

Country Status (5)

Country Link
EP (1) EP0321379B1 (en)
JP (1) JP2678466B2 (en)
KR (1) KR960013199B1 (en)
DE (2) DE321379T1 (en)
YU (1) YU111888A (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5110560A (en) * 1987-11-23 1992-05-05 United Technologies Corporation Convoluted diffuser
US5058381A (en) * 1990-01-24 1991-10-22 General Motors Corporation Low restriction exhaust treatment apparatus
US5230369A (en) * 1990-12-24 1993-07-27 United Technologies Corporation Structure to reduce turning losses in angled conduit
ES2071276T3 (en) * 1990-12-24 1995-06-16 United Technologies Corp MECHANISM TO REDUCE PRESSURE LOSSES IN THE TUBE CURVES AND ELBOWS.
US5327940A (en) * 1992-03-09 1994-07-12 United Technologies Corporation Mechanism to reduce turning losses in angled conduits
US5230656A (en) * 1992-08-05 1993-07-27 Carrier Corporation Mixer ejector flow distributor
US5918465A (en) * 1995-02-03 1999-07-06 Bmw Rolls-Royce Gmbh Flow guiding body for a gas turbine combustion chamber
DE19757187A1 (en) * 1997-12-22 1999-06-24 Abb Research Ltd Method and device for energy enrichment in a boundary layer adjacent to a flow-around surface
DE59807195D1 (en) * 1998-11-06 2003-03-20 Alstom Switzerland Ltd Flow channel with cross-sectional jump
JP4788392B2 (en) * 2006-02-24 2011-10-05 日立造船株式会社 Ammonia gas uniform mixing device in denitration reactor
JP5489432B2 (en) * 2008-08-12 2014-05-14 三菱重工業株式会社 Exhaust gas treatment apparatus and exhaust gas treatment system
JP5523807B2 (en) * 2009-08-05 2014-06-18 三菱重工業株式会社 Exhaust gas treatment equipment
RU2550370C2 (en) * 2011-05-11 2015-05-10 Альстом Текнолоджи Лтд Centrifugal nozzle with projecting parts
US8938971B2 (en) 2011-05-11 2015-01-27 Alstom Technology Ltd Flow straightener and mixer
DE102012221342A1 (en) * 2012-11-22 2014-05-22 Friedrich Boysen Gmbh & Co. Kg Flow guide device for distributing gas flow i.e. effluent stream, in e.g. metering pump, of motor car, has two face portions arranged in direction of flow of gas and curved along connecting line in connection
US10081429B2 (en) * 2014-07-21 2018-09-25 The Boeing Company Air diffuser systems, methods, and apparatuses
RU2692058C1 (en) * 2018-06-08 2019-06-20 Акционерное общество "НИИ измерительных приборов - Новосибирский завод имени Коминтерна" (АО "НПО НИИИП-НЗиК") Method of protecting radar stations from small-size unmanned aerial vehicles and device for its implementation

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3827461A (en) * 1972-11-21 1974-08-06 Worthington Pump Int Inc Stream filament mixer for pipe flow
US3870772A (en) * 1969-10-27 1975-03-11 Gaf Corp 2-Chloroethyl-phosphonothioic esters and thioesters
US3953176A (en) * 1973-05-22 1976-04-27 Texas Instruments Incorporated Catalytic converter
DE2843365A1 (en) * 1978-10-05 1980-04-24 Daimler Benz Ag Inlet to IC engine afterburner - has indentations on short sides to give more even entering gas flow
WO1987003646A1 (en) * 1985-12-13 1987-06-18 Saab-Scania Aktiebolag Catalyst housing

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7811364A (en) * 1978-11-17 1980-05-20 Tno DIFFUSOR IN PARTICULAR WITH LARGE TOP ANGLE.
EP0244335B1 (en) * 1986-04-30 1992-01-15 United Technologies Corporation Diffuser

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3870772A (en) * 1969-10-27 1975-03-11 Gaf Corp 2-Chloroethyl-phosphonothioic esters and thioesters
US3827461A (en) * 1972-11-21 1974-08-06 Worthington Pump Int Inc Stream filament mixer for pipe flow
US3953176A (en) * 1973-05-22 1976-04-27 Texas Instruments Incorporated Catalytic converter
DE2843365A1 (en) * 1978-10-05 1980-04-24 Daimler Benz Ag Inlet to IC engine afterburner - has indentations on short sides to give more even entering gas flow
WO1987003646A1 (en) * 1985-12-13 1987-06-18 Saab-Scania Aktiebolag Catalyst housing

Also Published As

Publication number Publication date
DE321379T1 (en) 1989-12-07
DE3853466D1 (en) 1995-05-04
YU111888A (en) 1990-12-31
JP2678466B2 (en) 1997-11-17
EP0321379A2 (en) 1989-06-21
EP0321379B1 (en) 1995-03-29
KR960013199B1 (en) 1996-09-30
JPH01172603A (en) 1989-07-07
DE3853466T2 (en) 1995-08-03
KR890010477A (en) 1989-08-09

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