FR2277257A1 - Ventilateur a niveau de bruit reduit - Google Patents

Ventilateur a niveau de bruit reduit

Info

Publication number
FR2277257A1
FR2277257A1 FR7520644A FR7520644A FR2277257A1 FR 2277257 A1 FR2277257 A1 FR 2277257A1 FR 7520644 A FR7520644 A FR 7520644A FR 7520644 A FR7520644 A FR 7520644A FR 2277257 A1 FR2277257 A1 FR 2277257A1
Authority
FR
France
Prior art keywords
blades
noise
frequencies
noise level
reduced noise
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.)
Granted
Application number
FR7520644A
Other languages
English (en)
Other versions
FR2277257B1 (fr
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.)
Rotron Inc
Original Assignee
Rotron Inc
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 Rotron Inc filed Critical Rotron Inc
Publication of FR2277257A1 publication Critical patent/FR2277257A1/fr
Application granted granted Critical
Publication of FR2277257B1 publication Critical patent/FR2277257B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
    • F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
    • 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
    • F01D5/141—Shape, i.e. outer, aerodynamic form
    • 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
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/32—Rotors specially for elastic fluids for axial flow pumps
    • F04D29/38—Blades
    • F04D29/384—Blades characterised by form
    • 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
    • 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
    • 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
    • F05D2250/00—Geometry
    • F05D2250/10—Two-dimensional
    • F05D2250/18—Two-dimensional patterned
    • F05D2250/182—Two-dimensional patterned crenellated, notched
    • 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
    • F05D2250/00—Geometry
    • F05D2250/10—Two-dimensional
    • F05D2250/18—Two-dimensional patterned
    • F05D2250/183—Two-dimensional patterned zigzag
    • 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
    • F05D2250/00—Geometry
    • F05D2250/10—Two-dimensional
    • F05D2250/18—Two-dimensional patterned
    • F05D2250/184—Two-dimensional patterned sinusoidal
    • 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
FR7520644A 1974-07-02 1975-07-01 Ventilateur a niveau de bruit reduit Granted FR2277257A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US48528974A 1974-07-02 1974-07-02

Publications (2)

Publication Number Publication Date
FR2277257A1 true FR2277257A1 (fr) 1976-01-30
FR2277257B1 FR2277257B1 (fr) 1978-03-17

Family

ID=23927596

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7520644A Granted FR2277257A1 (fr) 1974-07-02 1975-07-01 Ventilateur a niveau de bruit reduit

Country Status (8)

Country Link
US (1) US4089618A (fr)
JP (1) JPS5115210A (fr)
CA (1) CA1041063A (fr)
DE (1) DE2529541B2 (fr)
FR (1) FR2277257A1 (fr)
GB (1) GB1478069A (fr)
IT (1) IT1036993B (fr)
NL (1) NL155923B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989012174A1 (fr) * 1988-06-08 1989-12-14 ABB Fläkt AB Aube directrice pour soufflante axiale
US5246339A (en) * 1988-06-08 1993-09-21 Abb Flakt Ab Guide vane for an axial fan
EP0711925A1 (fr) * 1994-11-08 1996-05-15 Mitsubishi Jukogyo Kabushiki Kaisha Ventilateur à hélice
EP0761983A1 (fr) * 1995-08-31 1997-03-12 AT&T Corp. Ventilateur ayant des pales revêtues avec un matériau réducteur de bruit
EP1801422A2 (fr) 2005-12-22 2007-06-27 Ziehl-Abegg AG Ventilateur et aube de ventilateur

Families Citing this family (112)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS541409A (en) * 1977-06-04 1979-01-08 Seibu Giken Kk Blower casing
JPS5411508A (en) * 1977-06-27 1979-01-27 Seibu Giken Kk Blower casing
JPS5483108A (en) * 1977-12-16 1979-07-03 Nittetsu Mining Co Ltd Casing for blower
CA1106811A (fr) * 1978-09-14 1981-08-11 Sheldons Engineering Limited Stabilisateur de roue sur ventilateur a l'arret
US4318669A (en) * 1980-01-07 1982-03-09 The United States Of America As Represented By The Secretary Of The Air Force Vane configuration for fluid wake re-energization
DE3137554A1 (de) * 1981-09-22 1983-03-31 Wilhelm Gebhardt Gmbh, 7112 Waldenburg "radialventilator"
DE3234011A1 (de) * 1982-09-14 1984-03-15 Braun Ag, 6000 Frankfurt Axialluefter
DE3609212A1 (de) * 1986-03-19 1987-09-24 Standard Elektrik Lorenz Ag Axialluefter
GB8829792D0 (en) * 1988-12-21 1989-07-05 Marconi Co Ltd Noise reduction method
US5275535A (en) * 1991-05-31 1994-01-04 Innerspace Corporation Ortho skew propeller blade
DE4230014C1 (de) * 1992-09-08 1994-03-24 Eberspaecher J Vorrichtung zur Reduzierung der Geräuschentwicklung bei Gebläsen
NL9301910A (nl) * 1993-11-04 1995-06-01 Stork Prod Eng Windturbine.
US5510954A (en) * 1994-05-20 1996-04-23 Silent Systems, Inc. Silent disk drive assembly
DE19639191C2 (de) * 1996-08-22 1998-07-02 Georg Kick Fa Laufrad sowie Gebläseeinrichtung mit einem derartigen Laufrad
US5951162A (en) * 1997-03-14 1999-09-14 General Signal Corporation Mixing impellers and impeller systems for mixing and blending liquids and liquid suspensions having efficient power consumption characteristics
US6471157B1 (en) * 1999-03-22 2002-10-29 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Device and method for reducing aircraft noise
DE19918085A1 (de) * 1999-04-21 2000-10-26 Bsh Bosch Siemens Hausgeraete Gebläse mit einem Spiralgehäuse
BR0003706A (pt) 2000-05-30 2002-02-13 Tecsis Tecnologia E Sist S Ava Pá para ventilador axial de baixo ruìdo e alta eficiência
EP1256715A1 (fr) * 2001-05-11 2002-11-13 VA TECH HYDRO GmbH & Co. Auget pour turbine Pelton
JP3978083B2 (ja) 2001-06-12 2007-09-19 漢拏空調株式会社 軸流ファン
US6733240B2 (en) * 2001-07-18 2004-05-11 General Electric Company Serrated fan blade
DE10210426A1 (de) * 2002-03-09 2003-10-23 Voith Siemens Hydro Power Vorrichtung zur Strömungsstabilisierung in hydraulischen Strömungsmaschinen
JP4003541B2 (ja) * 2002-05-30 2007-11-07 三菱電機株式会社 送風機
US7198062B2 (en) * 2002-11-21 2007-04-03 The Boeing Company Fluid control valve
US20040149340A1 (en) * 2002-11-21 2004-08-05 Martin Steinert Fluid control valve
KR100487378B1 (ko) * 2002-12-10 2005-05-03 엘지전자 주식회사 나선형 송풍팬 어셈블리
JP2004353496A (ja) * 2003-05-28 2004-12-16 Sony Corp 薄型ファンモータ
US7305817B2 (en) * 2004-02-09 2007-12-11 General Electric Company Sinuous chevron exhaust nozzle
JP2005264803A (ja) * 2004-03-18 2005-09-29 Matsushita Electric Ind Co Ltd 送風機と、その送風機を用いた熱交換ユニットおよび冷凍冷蔵庫
ATE519672T1 (de) * 2004-06-01 2011-08-15 Deutsch Zentr Luft & Raumfahrt Trag- oder leitelement
US20060027679A1 (en) * 2004-08-03 2006-02-09 Mr. Jack Gratteau Ejector Nozzle
JP4432865B2 (ja) * 2004-09-30 2010-03-17 ダイキン工業株式会社 送風機の羽根車およびそれを用いた空気調和機
US20060171804A1 (en) * 2005-01-07 2006-08-03 Brown Fred A Fluid moving device
US20060177323A1 (en) * 2005-02-09 2006-08-10 Hsieh Hsin-Mao Rotor for a cooling fan
US7494325B2 (en) * 2005-05-18 2009-02-24 Hartzell Fan, Inc. Fan blade with ridges
JP4517955B2 (ja) * 2005-06-24 2010-08-04 三菱電機株式会社 貫流送風機用羽根車および空気調和機
US7815418B2 (en) * 2005-08-03 2010-10-19 Mitsubishi Heavy Industries, Ltd. Shroud and rotary vane wheel of propeller fan and propeller fan
TWI290978B (en) * 2005-11-18 2007-12-11 Delta Electronics Inc Fan and fan housing with toothed-type connecting elements
TWI288803B (en) * 2006-01-23 2007-10-21 Delta Electronics Inc Dual serial fans with toothed-type connecting elements
GB0601837D0 (en) 2006-01-31 2006-03-08 Rolls Royce Plc An aerofoil assembly and a method of manufacturing an aerofoil assembly
KR100798103B1 (ko) * 2006-05-04 2008-01-24 주식회사 에어로네트 축류 팬의 다중영역설계방법 및 그 설계방법에 의해 제작되는 축류팬
US7891464B2 (en) * 2006-06-15 2011-02-22 Hewlett-Packard Development, L.P. System and method for noise suppression
US7779960B2 (en) * 2006-08-18 2010-08-24 Hewlett-Packard Development Company, L.P. System and method for noise suppression
JP4208020B2 (ja) * 2007-04-13 2009-01-14 ダイキン工業株式会社 多翼ファンの羽根車
US7901189B2 (en) 2007-05-14 2011-03-08 General Electric Company Wind-turbine blade and method for reducing noise in wind turbine
US20090074585A1 (en) * 2007-09-19 2009-03-19 General Electric Company Wind turbine blades with trailing edge serrations
GB2452104B (en) * 2008-01-14 2009-07-22 Flakt Woods Ltd A meridional fan
JP5422139B2 (ja) * 2008-04-18 2014-02-19 三菱重工業株式会社 プロペラファン
US7806952B2 (en) * 2008-08-01 2010-10-05 3M Innovative Properties Company Apparatus, system, and method for enhancing air purification efficiency
EP2209111A1 (fr) * 2009-01-14 2010-07-21 Lucent Technologies Inc. Masquage de bruit
DE102009033756A1 (de) * 2009-07-17 2011-01-20 Rolls-Royce Deutschland Ltd & Co Kg Axialverdichter, insbesondere für eine Fluggasturbine
CN101956722B (zh) * 2010-06-03 2016-05-04 深圳市超频三科技股份有限公司 一种风扇
US7909576B1 (en) * 2010-06-24 2011-03-22 General Electric Company Fastening device for rotor blade component
DE102010034604A1 (de) * 2010-08-13 2012-02-16 Ziehl-Abegg Ag Flügelrad für einen Ventilator
FR2965314B1 (fr) * 2010-09-29 2017-01-27 Valeo Systemes Thermiques Helice pour ventilateur dont la longueur de corde varie
US8523515B2 (en) * 2010-11-15 2013-09-03 General Electric Company Noise reducer for rotor blade in wind turbine
US8267657B2 (en) * 2010-12-16 2012-09-18 General Electric Company Noise reducer for rotor blade in wind turbine
US8556584B2 (en) * 2011-02-03 2013-10-15 General Electric Company Rotating component of a turbine engine
US8414261B2 (en) 2011-05-31 2013-04-09 General Electric Company Noise reducer for rotor blade in wind turbine
US8834127B2 (en) 2011-09-09 2014-09-16 General Electric Company Extension for rotor blade in wind turbine
GB2497739A (en) * 2011-12-19 2013-06-26 Rolls Royce Plc Rotor blade with serrated trailing edge
US8430638B2 (en) 2011-12-19 2013-04-30 General Electric Company Noise reducer for rotor blade in wind turbine
US9121294B2 (en) 2011-12-20 2015-09-01 General Electric Company Fan blade with composite core and wavy wall trailing edge cladding
JP2013130125A (ja) * 2011-12-21 2013-07-04 Toshiba Carrier Corp プロペラファンおよびこれを用いた熱源ユニット
JP5252070B2 (ja) * 2011-12-28 2013-07-31 ダイキン工業株式会社 軸流ファン
DE102012004617A1 (de) 2012-03-06 2013-09-12 Ziehl-Abegg Ag Axialventilator
US9365075B2 (en) * 2012-06-08 2016-06-14 II Charles E. Holloway Spinning rim assembly for a wheel
RU2510357C1 (ru) * 2012-08-13 2014-03-27 Общество с ограниченной ответственностью "НПО "Гидродинамика" Лопастная система водометного движителя
KR101920085B1 (ko) * 2012-09-12 2018-11-19 엘지전자 주식회사 팬
DE102012019795A1 (de) * 2012-10-05 2014-04-10 Ziehl-Abegg Ag Ventilatoreinheit
US9371836B2 (en) * 2012-10-25 2016-06-21 Dyna-Tech Sales Corporation Mixed flow fan assembly
US20140225481A1 (en) * 2013-02-12 2014-08-14 Remy Technologies Llc Noise reducing features on cooling fan
US9650962B2 (en) 2013-03-08 2017-05-16 Rolls-Royce Corporation Rotor noise suppression
DE102013206207A1 (de) * 2013-04-09 2014-10-09 MTU Aero Engines AG Schaufelblatt für eine Strömungsmaschine mit Hinterkantenprofilierung, Schaufel und integral beschaufelter Rotor
CN104179724A (zh) * 2013-05-23 2014-12-03 纬创资通股份有限公司 风扇
CA2920056C (fr) * 2013-09-12 2023-02-28 Evapco, Inc. Procede et appareil de montage de ventilateur de tour de refroidissement permettant un demontage a partir de l'interieur de la tour
DE102013222207B4 (de) * 2013-10-31 2022-03-03 Mahle International Gmbh Radialgebläse
FR3013324B1 (fr) * 2013-11-19 2016-07-08 Airbus Sas Antenne d'aeronef
US9494134B2 (en) 2013-11-20 2016-11-15 General Electric Company Noise reducing extension plate for rotor blade in wind turbine
CN103953554A (zh) * 2014-04-21 2014-07-30 侯如升 一种静音风扇
JP6409666B2 (ja) * 2014-09-18 2018-10-24 株式会社デンソー 送風機
CN104389818A (zh) * 2014-11-05 2015-03-04 广东佳科风机股份有限公司 一种减喘振低噪音风机
US11041388B2 (en) 2015-03-30 2021-06-22 Pratt & Whitney Canada Corp. Blade cutback distribution in rotor for noise reduction
US10180125B2 (en) 2015-04-20 2019-01-15 General Electric Company Airflow configuration for a wind turbine rotor blade
GB201512688D0 (en) * 2015-07-20 2015-08-26 Rolls Royce Plc Aerofoil
US10428831B2 (en) 2015-07-30 2019-10-01 WLC Enterprises, Inc. Stepped leading edge fan blade
DE102015216579A1 (de) * 2015-08-31 2017-03-02 Ziehl-Abegg Se Lüfterrad, Lüfter und System mit mindestens einem Lüfter
KR102479815B1 (ko) * 2015-11-30 2022-12-23 삼성전자주식회사 송풍팬 및 이를 구비하는 공기 조화기
EP3181895A1 (fr) * 2015-12-17 2017-06-21 LM WP Patent Holding A/S Système à plaque de séparation pour une pale de turbine éolienne dentelée
US20170241430A1 (en) * 2016-02-19 2017-08-24 Chaun-Choung Technology Corp. Combined fan and cooling device using the same
US10578126B2 (en) * 2016-04-26 2020-03-03 Acme Engineering And Manufacturing Corp. Low sound tubeaxial fan
CN109312759B (zh) * 2016-07-01 2020-07-17 三菱电机株式会社 螺旋桨风扇
AU2017206193B2 (en) * 2016-09-02 2023-07-27 Fujitsu General Limited Axial fan and outdoor unit
US10465652B2 (en) 2017-01-26 2019-11-05 General Electric Company Vortex generators for wind turbine rotor blades having noise-reducing features
US10480535B2 (en) * 2017-03-22 2019-11-19 Pratt & Whitney Canada Corp. Fan rotor with flow induced resonance control
CN106939900A (zh) * 2017-04-10 2017-07-11 温州职业技术学院 一种紊流低噪风机叶轮
JP6775676B2 (ja) * 2017-04-28 2020-10-28 三菱電機株式会社 プロペラファン
USD901669S1 (en) 2017-09-29 2020-11-10 Carrier Corporation Contoured fan blade
JP2019098878A (ja) * 2017-11-30 2019-06-24 トヨタ自動車株式会社 レジスタ
US10767623B2 (en) 2018-04-13 2020-09-08 General Electric Company Serrated noise reducer for a wind turbine rotor blade
US10746157B2 (en) 2018-08-31 2020-08-18 General Electric Company Noise reducer for a wind turbine rotor blade having a cambered serration
WO2020063565A1 (fr) * 2018-09-25 2020-04-02 约克广州空调冷冻设备有限公司 Aube et turbine à écoulement axial l'utilisant
FR3087482B1 (fr) * 2018-10-18 2021-12-17 Safran Aircraft Engines Structure profilee pour aeronef ou turbomachine
EP3882470A4 (fr) * 2018-11-22 2022-02-23 GD Midea Air-Conditioning Equipment Co., Ltd. Draisienne à flux axial et climatiseur la comprenant
USD980965S1 (en) 2019-05-07 2023-03-14 Carrier Corporation Leading edge of a fan blade
US11187083B2 (en) 2019-05-07 2021-11-30 Carrier Corporation HVAC fan
CN110410879A (zh) * 2019-08-29 2019-11-05 代元军 一种叶片叶尖呈w型结构的空调室外机
GB2595201B (en) * 2020-02-18 2022-07-06 Imperial Thermal Engineering Ltd Electric roofing torch
EP4034769A1 (fr) 2020-03-10 2022-08-03 ebm-papst Mulfingen GmbH & Co. KG Ventilateur et aubes de ventilateur
US11686315B2 (en) 2020-08-11 2023-06-27 Hunter Fan Company Ceiling fan and impeller blade
RU2763630C1 (ru) * 2021-04-11 2021-12-30 Общество с ограниченной ответственностью Специальное Конструкторское Бюро "Мысль" Малошумная лопасть рабочего колеса осевого вентилятора
DE102022203856A1 (de) 2022-04-20 2023-10-26 Robert Bosch Gesellschaft mit beschränkter Haftung Lüftervorrichtung

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899128A (en) * 1959-08-11 Vaghi
US1717745A (en) * 1928-02-03 1929-06-18 Tismer Friedrich Propulsion screw
US1861065A (en) * 1930-08-18 1932-05-31 Poot Philippe Screw-propeller for flying machines and other aerodynamics apparatus
FR719758A (fr) * 1930-10-03 1932-02-10 Perfectionnements aux hélices aériennes
US2013473A (en) * 1932-09-24 1935-09-03 Gauger Fluid propeller
US2238749A (en) * 1939-01-30 1941-04-15 Clarence B Swift Fan blade
US2532753A (en) * 1947-07-05 1950-12-05 Lockheed Aircraft Corp Transonic airfoil design
GB774396A (en) * 1954-04-23 1957-05-08 Elfyn John Richards Improvements in or relating to helicopter rotor propulsion means
FR1399801A (fr) * 1964-04-30 1965-05-21 Cem Comp Electro Mec Aube de turbine à vapeur
US3776363A (en) * 1971-05-10 1973-12-04 A Kuethe Control of noise and instabilities in jet engines, compressors, turbines, heat exchangers and the like
US3779338A (en) * 1972-01-27 1973-12-18 Bolt Beranek & Newman Method of reducing sound generation in fluid flow systems embodying foil structures and the like

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989012174A1 (fr) * 1988-06-08 1989-12-14 ABB Fläkt AB Aube directrice pour soufflante axiale
US5246339A (en) * 1988-06-08 1993-09-21 Abb Flakt Ab Guide vane for an axial fan
EP0711925A1 (fr) * 1994-11-08 1996-05-15 Mitsubishi Jukogyo Kabushiki Kaisha Ventilateur à hélice
US5603607A (en) * 1994-11-08 1997-02-18 Mitsubishi Jukogyo Kabushiki Kaisha Propeller fan
EP0761983A1 (fr) * 1995-08-31 1997-03-12 AT&T Corp. Ventilateur ayant des pales revêtues avec un matériau réducteur de bruit
EP1801422A2 (fr) 2005-12-22 2007-06-27 Ziehl-Abegg AG Ventilateur et aube de ventilateur

Also Published As

Publication number Publication date
GB1478069A (en) 1977-06-29
US4089618A (en) 1978-05-16
DE2529541A1 (de) 1976-01-22
JPS5115210A (en) 1976-02-06
DE2529541B2 (de) 1980-03-27
NL155923B (nl) 1978-02-15
JPS5431204B2 (fr) 1979-10-05
CA1041063A (fr) 1978-10-24
NL7507241A (nl) 1976-01-06
IT1036993B (it) 1979-10-30
FR2277257B1 (fr) 1978-03-17

Similar Documents

Publication Publication Date Title
FR2277257A1 (fr) Ventilateur a niveau de bruit reduit
SE7612054L (sv) Axialflekt
GB1386481A (en) Low noise ducted fan assembly
GB971548A (en) Fluid flow control apparatus
GB1446254A (en) Impingement-convective cooling systems
KR830010309A (ko) 승풍기
GB1107315A (en) Rotary air moving fan
GB1262494A (en) Axial flow fans arranged for attenuating fan noise
EP0418303B1 (fr) Aube directrice pour soufflante axiale
GB631231A (en) Improvements relating to cased screw fans
ATE12981T1 (de) Daempfer fuer niederfrequente geraeusche und turbulenzen.
GB732919A (en) Improvements in or relating to blade assemblies of turbo-machines such as compressors and turbines
KR830000103Y1 (ko) 선박의 추진장치
KR970009834B1 (ko) 횡류팬의 임펠러
SU1597449A1 (ru) Диффузорный лопаточный направл ющий аппарат центробежной турбомашины
GB1523884A (en) Mixed flow fans
SU812976A2 (ru) Рабочее колесо центробежногоВЕНТил ТОРА
SU436926A1 (ru) Колесо вихревой машшины
Yeh et al. Unsteady induced velocities in a cascade(Periodic gust and wake induced unsteady air flow, calculating velocity variation with distance from rotor blade for cascade effect)
GB1284341A (en) Fluid flow machine
SU1553765A2 (ru) Устройство дл испытани лопаток рабочих колес центробежных вентил торов
GB1129672A (en) Air diffuser
JPS5672290A (en) Cylindrical impeller
PAULON Study of the waves configuration in an axial-flow supersonic compressor
LAWACZECK High speed schlieren film of the pulsating flow in a transonic turbine cascade(High speed schlieren film of pulsating flow in transonic turbine cascade)

Legal Events

Date Code Title Description
CD Change of name or company name