GB933223A - Improvements relating to arrangements to guide flow of a fluid medium - Google Patents

Improvements relating to arrangements to guide flow of a fluid medium

Info

Publication number
GB933223A
GB933223A GB13685/63A GB1368563A GB933223A GB 933223 A GB933223 A GB 933223A GB 13685/63 A GB13685/63 A GB 13685/63A GB 1368563 A GB1368563 A GB 1368563A GB 933223 A GB933223 A GB 933223A
Authority
GB
United Kingdom
Prior art keywords
fluid
guide
guides
ambient
pressure
Prior art date
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.)
Expired
Application number
GB13685/63A
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.)
Individual
Original Assignee
Individual
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of GB933223A publication Critical patent/GB933223A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B39/00—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude
    • B63B39/06—Equipment to decrease pitch, roll, or like unwanted vessel movements; Apparatus for indicating vessel attitude to decrease vessel movements by using foils acting on ambient water
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C21/00—Influencing air flow over aircraft surfaces by affecting boundary layer flow
    • B64C21/02—Influencing air flow over aircraft surfaces by affecting boundary layer flow by use of slot, ducts, porous areas or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C21/00—Influencing air flow over aircraft surfaces by affecting boundary layer flow
    • B64C21/02—Influencing air flow over aircraft surfaces by affecting boundary layer flow by use of slot, ducts, porous areas or the like
    • B64C21/04—Influencing air flow over aircraft surfaces by affecting boundary layer flow by use of slot, ducts, porous areas or the like for blowing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C9/00—Adjustable control surfaces or members, e.g. rudders
    • B64C9/38—Jet flaps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D5/00—Blades; Blade-carrying members; Heating, heat-insulating, cooling or antivibration means on the blades or the members
    • F01D5/12—Blades
    • F01D5/14—Form or construction
    • F01D5/148—Blades with variable camber, e.g. by ejection of fluid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D25/00—Pumping installations or systems
    • F04D25/02—Units comprising pumps and their driving means
    • F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
    • F04D25/088—Ceiling fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
    • F04D29/682—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps by fluid extraction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/68—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers
    • F04D29/681—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps
    • F04D29/684—Combating cavitation, whirls, noise, vibration or the like; Balancing by influencing boundary layers especially adapted for elastic fluid pumps by fluid injection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C2230/00—Boundary layer controls
    • B64C2230/04—Boundary layer controls by actively generating fluid flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64C—AEROPLANES; HELICOPTERS
    • B64C2230/00—Boundary layer controls
    • B64C2230/16—Boundary layer controls by blowing other fluids over the surface than air, e.g. He, H, O2 or exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2240/00—Components
    • F05D2240/20—Rotors
    • F05D2240/30—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor
    • F05D2240/304—Characteristics of rotor blades, i.e. of any element transforming dynamic fluid energy to or from rotational energy and being attached to a rotor related to the trailing edge of a rotor blade
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/10—Drag reduction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/30—Wing lift efficiency
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T50/00—Aeronautics or air transport
    • Y02T50/60—Efficient propulsion technologies, e.g. for aircraft

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

933,223. Centrifugal and transverse-flow fans and pumps. N. LAING. July 31, 1959 [Aug. 1, 1958], No. 13685/63. Divided out of 933,222. Class 110 (1). [Also in Groups XXVIII and XXXIII] In apparatus comprising a flow machine producing a first region wherein the pressure is lower than ambient pressure or than a second region of the apparatus, a hollow flow guide in the first region has a slot in its trailing portion, and ambient medium or medium from the second region is led into the interior of the guide, the arrangement being such that medium is ejected from the guide through the slot and medium flowing over the guide is given a change of direction or has a swirl imparted to it. Fig. 1 shows a centrifugal fan or pump in which swirlcreating guides 5 are mounted in a belled portion 3a of the inlet duct 3 downstream of a throttle valve 4 and supported at their inner ends by a dome-shaped deflector 5a. As shown in Fig. 2, each guide 5 is symmetrical in crosssection about a partition 6. Means are provided to connect to ambient fluid either the chambers 7 of all guides 5 or the chambers 8 whereby the difference between ambient pressure and the reduced pressure (as controlled by the throttle valve 4) in the inlet duct 3 causes ejection of ambient fluid from the guides either through slots 9 in the direction 11 or through slots 10 in the direction 12. The ejected fluid produces in co-operation with the guide profile a " jet flap " effect which in turn imposes a swirl (in one direction or the opposite direction) upon fluid entering the impeller 1. The "jet flap " effect is that already proposed for aircraft wherein air is ejected from a slot at the trailing edge of an aerofoil to form an air jet having the effect of a flap but with greatly reduced losses. The air jet changes the lift coefficient of the aerofoil and reduces losses due to flow separation on the suction side. Instead of being ambient fluid, the fluid supplied to the guides 5 may be derived from the pressure side of the fan or pump. Fig. 3 shows an elbow through which fluid flows in the direction of the arrow 32, two hollow arcuate guides 34 being pivoted to help deflect the fluid. Fluid is ejected in the direction of the arrows 35, 36 from the interior of the guides 34 and from a duct 33a at the inside of the elbow to provide a " jet flap " effect which reduces the losses which would otherwise occur. In a further embodiment, a hollow arcuate guide similar to one of the guides 34 is provided to guide the flow of fluid through the interior of the rotor of a transverse-flow machine. The pressure in the interior of the rotor is lower than the pressure of the ambient fluid supplied to the guide and is inversely related to the throughput. The amount of fluid ejected from the guide (and consequently the " jet flap " effect thereof) therefore automatically varies with the throughput.
GB13685/63A 1958-08-01 1959-07-31 Improvements relating to arrangements to guide flow of a fluid medium Expired GB933223A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL30964A DE1198145B (en) 1958-08-01 1958-08-01 Flow bodies, in particular transverse drive surfaces, with circulation that can be influenced by blowing out flow medium jets

Publications (1)

Publication Number Publication Date
GB933223A true GB933223A (en) 1963-08-08

Family

ID=7265399

Family Applications (3)

Application Number Title Priority Date Filing Date
GB26284/59A Expired GB933222A (en) 1958-08-01 1959-07-31 Improvements relating to axial-flow blowers
GB13685/63A Expired GB933223A (en) 1958-08-01 1959-07-31 Improvements relating to arrangements to guide flow of a fluid medium
GB13686/63A Expired GB934141A (en) 1958-08-01 1959-07-31 Improvements relating to flow machines

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB26284/59A Expired GB933222A (en) 1958-08-01 1959-07-31 Improvements relating to axial-flow blowers

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB13686/63A Expired GB934141A (en) 1958-08-01 1959-07-31 Improvements relating to flow machines

Country Status (3)

Country Link
BE (1) BE581306A (en)
DE (1) DE1198145B (en)
GB (3) GB933222A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1635074A3 (en) * 2004-09-11 2007-01-03 Incoe International, Inc. Device for dividing a flow of non-Newtonian fluid, e.g. of molten plastic
FR2898392A1 (en) * 2006-03-10 2007-09-14 Incoe Corp Non-Newton liquid material e.g. liquid plastic, dividing device for use in hot passage manifold system, has partition whose angular position has setting adapted to distribution of differentially viscous components of liquid in section
JP2007237723A (en) * 2006-03-07 2007-09-20 Incoe Corp Device for separating non-newtonian liquid flowing in passage
SG135987A1 (en) * 2006-03-09 2007-10-29 Incoe Corp Device for division of a non-newtonian liquid flowing through a passage

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3749379A (en) * 1971-04-07 1973-07-31 Gen Electric System for thermal exhaust
US3934410A (en) * 1972-09-15 1976-01-27 The United States Of America As Represented By The Secretary Of The Navy Quiet shrouded circulation control propeller
US5464321A (en) * 1978-11-24 1995-11-07 The United States Of America As Represented By The Secretary Of The Navy Marine propeller
DE3685852T2 (en) * 1985-04-24 1992-12-17 Pratt & Whitney Canada TURBINE ENGINE WITH INDUCED PRE-ROTATION AT THE COMPRESSOR INLET.
DE3534169A1 (en) * 1985-09-25 1987-03-26 Wolfgang Loesel Circulation stimulation for lift profiles for increasing lift and reducing resistance
JP2630701B2 (en) * 1991-10-21 1997-07-16 陸郎 野津 Turbine rotor blades for symmetric blade turbines
DE4332358C2 (en) * 1993-09-23 1997-03-06 Nissen Jens Peter Dipl Ing Method and device for converting the drive energies of watercraft into speed more effectively
FR2883604B1 (en) * 2005-03-23 2010-03-12 Snecma Moteurs DEVIATION SYSTEM FOR A GAS FLOW IN A TUYERE
US9360020B2 (en) * 2014-04-23 2016-06-07 Electric Torque Machines Inc Self-cooling fan assembly
CN113428311B (en) * 2021-07-16 2022-07-26 中国船舶重工集团公司第七0七研究所九江分部 Fluid momentum loop based on shaftless rim drive pump drive

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE586010C (en) * 1933-10-14 Siemens Schuckertwerke Akt Ges Fan
US2037942A (en) * 1935-10-28 1936-04-21 Edward A Stalker Means of reducing the fluid resistance of propelled vehicles
DE767546C (en) * 1938-09-12 1952-11-04 Bmw Flugmotorenbau G M B H Internally cooled turbine blade
FR971992A (en) * 1940-12-07 1951-01-24 Jet-propelled aerial vehicles improvements
GB578837A (en) * 1941-10-14 1946-07-15 Boulton Aircraft Ltd Improvements in and relating to aircraft
US2568812A (en) * 1945-10-27 1951-09-25 United Aircraft Corp Aircraft control means
FR1006146A (en) * 1947-11-21 1952-04-21 Snecma Aerodynamic valve
US2694898A (en) * 1948-08-09 1954-11-23 France Etat Device for deflecting a high-speed jet of gas ejected through a nozzle
DE1013174B (en) * 1953-08-12 1957-08-01 Power Jets Res & Dev Ltd Aircraft with lift control devices, e.g. Flaps, on the wing trailing edges
DE952395C (en) * 1953-08-18 1956-11-15 Eugen Wilhelm Huber Dr Ing Device for influencing the boundary layer in intake pipes
FR1103426A (en) * 1954-02-26 1955-11-03 Onera (Off Nat Aerospatiale) Improvements made to aerodyne wings
FR1139802A (en) * 1955-11-29 1957-07-05 Improvement to pipes or channels traversed by fluids

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1635074A3 (en) * 2004-09-11 2007-01-03 Incoe International, Inc. Device for dividing a flow of non-Newtonian fluid, e.g. of molten plastic
JP2007237723A (en) * 2006-03-07 2007-09-20 Incoe Corp Device for separating non-newtonian liquid flowing in passage
SG135987A1 (en) * 2006-03-09 2007-10-29 Incoe Corp Device for division of a non-newtonian liquid flowing through a passage
FR2898392A1 (en) * 2006-03-10 2007-09-14 Incoe Corp Non-Newton liquid material e.g. liquid plastic, dividing device for use in hot passage manifold system, has partition whose angular position has setting adapted to distribution of differentially viscous components of liquid in section

Also Published As

Publication number Publication date
BE581306A (en) 1959-12-01
DE1198145B (en) 1965-08-05
GB933222A (en) 1963-08-08
GB934141A (en) 1963-08-14

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