FR2516890A1 - VESSEL PROPELLER HAVING TWO OR MORE PERFORATED HOLLOW BLADES - Google Patents

VESSEL PROPELLER HAVING TWO OR MORE PERFORATED HOLLOW BLADES Download PDF

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Publication number
FR2516890A1
FR2516890A1 FR8219454A FR8219454A FR2516890A1 FR 2516890 A1 FR2516890 A1 FR 2516890A1 FR 8219454 A FR8219454 A FR 8219454A FR 8219454 A FR8219454 A FR 8219454A FR 2516890 A1 FR2516890 A1 FR 2516890A1
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FR
France
Prior art keywords
propeller
hub
passage
boat
hollow
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.)
Withdrawn
Application number
FR8219454A
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French (fr)
Inventor
Geert Herman Vos
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.)
Noordvos Schroeven BV
Original Assignee
Noordvos Schroeven BV
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 Noordvos Schroeven BV filed Critical Noordvos Schroeven BV
Publication of FR2516890A1 publication Critical patent/FR2516890A1/en
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H1/00—Propulsive elements directly acting on water
    • B63H1/02—Propulsive elements directly acting on water of rotary type
    • B63H1/12—Propulsive elements directly acting on water of rotary type with rotation axis substantially in propulsive direction
    • B63H1/14—Propellers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/113—Propeller-shaped stirrers for producing an axial flow, e.g. shaped like a ship or aircraft propeller
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/02—Aerobic processes
    • C02F3/12—Activated sludge processes
    • C02F3/20—Activated sludge processes using diffusers
    • C02F3/205—Moving, e.g. rotary, diffusers; Stationary diffusers with moving, e.g. rotary, distributors
    • C02F3/207—Moving, e.g. rotary, diffusers; Stationary diffusers with moving, e.g. rotary, distributors with axial thrust propellers
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Organic Chemistry (AREA)
  • Ocean & Marine Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
  • Toys (AREA)
  • Catching Or Destruction (AREA)
  • Screw Conveyors (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Wind Motors (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Abstract

L'INVENTION CONCERNE UNE HELICE DE BATEAU QUI COMPREND DEUX OU PLUSIEURS PALES CREUSES ET PERFOREES QUI SONT MONTEES SUR UN MOYEU TRAVERSE D'UN PASSAGE. SELON L'INVENTION, CHAQUE PALE CREUSE 1 EST PERFOREE EN 2 DE SON COTE SOUS LE VENT, ET PAR UN PASSAGE 4 A TRAVERS LE MOYEU 3, ELLE EST CONNECTEE AU COTE POUSSEE DE L'HELICE. L'INVENTION S'APPLIQUE NOTAMMENT A LA PROPULSION DES BATEAUX.THE INVENTION RELATES TO A BOAT PROPELLER WHICH INCLUDES TWO OR MORE HOLLOW AND PERFORATED BLADES WHICH ARE MOUNTED ON A HUB THROUGH A PASSAGE. ACCORDING TO THE INVENTION, EACH HOLLOW BLADE 1 IS PERFORATED IN 2 ON ITS DOWNWIND SIDE, AND BY A PASSAGE 4 THROUGH HUB 3, IT IS CONNECTED TO THE PUSHED SIDE OF THE PROPELLER. THE INVENTION APPLIES IN PARTICULAR TO THE PROPULSION OF BOATS.

Description

La présente invention se rapporte à une hélice de bateau ayant deux palesThe present invention relates to a boat propeller having two blades

creuses et perforées ou plus,hollow and perforated or more,

qui sont montées sur un moyeu traversé d'un passage.  which are mounted on a hub crossed by a passage.

Dans la demande de brevet en Hollande No 76 01422 est révélée une hélice de bateau qui comprend des pales creuses montées autour d'un moyeu, lesquelles pales sont pourvues de perforations soit du côté poussée ou du côté aspiration ou du côté sous le vent et de plus chacune communique, par un passage correspondant prévu dans le moyeu, avec l'arbre d'entraînement autour duquel le moyeu, est monté, lequel arbre est également creux L'arbre creux est de plus connecté à une source d'un matériau gazeux,  In Dutch Patent Application No. 76 01422 there is disclosed a boat propeller which comprises hollow blades mounted around a hub, which blades are provided with perforations on either the thrust side or the suction side or on the lee side and each further communicates, by a corresponding passage provided in the hub, with the drive shaft around which the hub is mounted, which shaft is also hollow The hollow shaft is further connected to a source of a gaseous material,

liquide ou pulvérulent.liquid or powdery.

Faisant partie du mécanisme de propulsion d'un bateau, une telle hélice est efficace pour obtenir que, lors de sa rotation, soit par suite d'une pression en excès ou sous l'influence de l'action d'aspiration provenant de  Being part of the propulsion mechanism of a boat, such a propeller is effective to obtain that, during its rotation, either as a result of excess pressure or under the influence of the suction action from

l'hélice pendant sa rotation, les matériaux indiqués ci-  the propeller during its rotation, the materials listed below

dessus soient transportés, par l'arbre creux et les passages prévus dans le moyeujusqu'aux pales creuses de l'hélice, pour s'écouler subséquemment, par les perforations, dans  above are transported, by the hollow shaft and the passages provided in the hub to the hollow blades of the propeller, to flow subsequently, through the perforations, in

l'eau ambiante pour s'y disperser.the ambient water to disperse.

La présente invention a pour objet une hélice de bateau de la sorte définie ci-dessus, et ayant une meilleure  The present invention relates to a boat propeller of the kind defined above, and having a better

efficacité en ce qui concerne le mécanisme de propulsion.  efficiency with regard to the propulsion mechanism.

Selon la présente invention, on prévoit une hélice de bateau qui est caractérisée en ce que chaque pale creuse est perforée à son côté sous le vent, et est connectée, par  According to the present invention, there is provided a boat propeller which is characterized in that each hollow blade is perforated at its leeward side, and is connected by

un passage à travers le moyeu, au côté poussée de l'hélice.  a passage through the hub at the thrust side of the propeller.

Pendant la rotation de l'hélice de bateau selon l'invention, qui est montée autour d'un arbre plein normal, dans tous les cas un arbre à travers lequel aucun matériau n'est admis vers les creux des pales de l'hélice pendant la rotation, l'eau s'écoule de la région du côté poussée de l'hélice par le passage à travers le moyeu jusqu'à l'espace creux dans la pale correspondante de l'hélice et de là, par les perforations jusqu'à la région au côté sous le ventde l'hélice On a trouvé que ce recyclage d'eau était accompagné d'une amélioration considérable de l'efficacité du fonctionnement de l'hélice, qui dépend de l'allure de rotation et cela est remarquable du point de vue consommation de carburant, vitesse du bateau et puissance de traction Dans un mode de réalisation de l'hélice selon l'invention, et qui est avantageux pour l'amélioration de l'efficacité du fonctionnement de l'hélice, chaque passage à travers le moyeu du côté poussée de l'hélice est dirigé  During the rotation of the boat propeller according to the invention, which is mounted around a normal solid shaft, in all cases a shaft through which no material is admitted to the hollow of the blades of the propeller during the rotation, the water flows from the region of the thrust side of the propeller through the passage through the hub to the hollow space in the corresponding blade of the propeller and from there through the perforations until to the area at the leeward side of the propeller It was found that this water recirculation was accompanied by a considerable improvement in the efficiency of the operation of the propeller, which depends on the pace of rotation and this is remarkable from the point of view of fuel consumption, boat speed and traction power In one embodiment of the propeller according to the invention, and which is advantageous for improving the efficiency of the operation of the propeller, each passage through the hub on the thrust side of the propeller is irigé

sensiblement parallèlement à l'axe de rotation.  substantially parallel to the axis of rotation.

Dans un mode de réalisation efficace, les perfora-  In an effective embodiment, the perforations

tions du côté sous le ventdes pales de l'hélice sont parallèles et, en regardant dans la direction de rotation de l'hélice,  on the downwind side of the propeller blades are parallel and, looking in the direction of rotation of the propeller,

juste derrière la tractrice On admet qu'une telle caracté-  behind the tracer It is assumed that such a characteristic

ristique est connue de la demande de brevet en Hollande NI 78 03906 Cependant, cela concerne une hélice avec laquelle un matériau gazeux, pulvérulent ou liquide est  However, this relates to a propeller with which a gaseous, powdery or liquid material is used.

dispersé dans un liquide en utilisant des cavités.  dispersed in a liquid using cavities.

d'implosion La présente invention par ailleurs, se  The present invention, moreover, is

rapporte à une hélice servant à la propulsion d'un bateau.  relates to a propeller used to propel a boat.

On a déterminé expérimentalement au moyen d'un bateau en pratique que, dans des conditions comparables, une hélice selon l'invention, ayant trois pales, donnait une amélioration considérable de l'efficacité de propulsion  It has been experimentally determined by means of a boat in practice that, under comparable conditions, a propeller according to the invention, having three blades, gives a considerable improvement in the propulsive efficiency.

en comparaison à une hélice identique mais sans les perfora-  compared to an identical propeller but without the perforations

tions dans les pales et sans la présence d'un passage dans le moyeu de l'hélice L'amélioration d'efficacité dans les conditions choisies d'essai dépendait de l'allure de rotation de l'hélice dans le sens qu'après passage à travers un maximum, l'efficacité diminuait quand la vitesse était encore augmentée Entre 250 et 350 t/mn, en mesurant par la vitesse du bateau, on a pu déterminer une amélioration d'environ 8-6 % avec l'hélice selon l'invention; en mesurant par la force de traction, une amélioration de l'ordre de 39-16 %; et en calculant la consommation de carburant en fonction de la vitesse du bateau, l'hélice selon l'invention a présenté une amélioration par rapport à l'hélice normale  In the blades and without the presence of a passage in the hub of the propeller The improvement in efficiency in the chosen test conditions depended on the speed of rotation of the propeller in the direction that after passage through a maximum, the efficiency decreased when the speed was further increased Between 250 and 350 rpm, measured by the speed of the boat, it was possible to determine an improvement of about 8-6% with the propeller according to the 'invention; measuring by the tensile force, an improvement of the order of 39-16%; and by calculating the fuel consumption as a function of the speed of the boat, the propeller according to the invention showed an improvement compared to the normal propeller

de l'ordre de 7 à 8 % en moyenne.on the order of 7 to 8% on average.

L'invention sera mieux comprise, et d'autres buts, caractéristiques, détails et avantages de celle-ci  The invention will be better understood, and other purposes, features, details and advantages thereof

apparaitront plus clairement au cours de la description  will appear more clearly in the description

explicative qui va suivre faite en référence au dessin schématique annexé donné uniquement à titre d'exemple illustrant un mode de réalisation de l'invention et dans lequel: la figure unique montre une hélice de bateau  explanatory text which will follow with reference to the appended schematic drawing given solely by way of example illustrating an embodiment of the invention and in which: the single figure shows a boat propeller

selon l'invention, en vue axiale à partir du côtésous le vent.  according to the invention, in axial view from the side of the wind.

Sur le dessin, le repère 1 désigne une pale d'hélice creuse qui est pourvue de perforations 2 parallèles à la tractrice 5 La pale d'hélice est connectée à un moyeu 3 pourvu d'un passage 4 qui relie la région du côté  In the drawing, reference numeral 1 denotes a hollow propeller blade which is provided with perforations 2 parallel to the tracer 5. The propeller blade is connected to a hub 3 provided with a passage 4 which connects the region of the side.

poussée de l'hélice à l'espace creux de la pale de l'hélice.  thrust of the propeller to the hollow space of the blade of the propeller.

La forme et le nombre de perforations, la forme de la cavité dans une pale d'hélice et la forme et les dimensions du passage à travers le moyeu peuvent être  The shape and number of perforations, the shape of the cavity in a propeller blade and the shape and dimensions of the passageway through the hub can be

adaptés ou modifiés pour réduire la résistance à l'écoule-  adapted or modified to reduce the flow resistance

mentpourl'eau qui est recyclée.for water that is recycled.

Claims (3)

REVENDICATIONS 1. Hélice de bateau du type comprenant deux ou plusieurs pales creuses et perforées montées sur un moyeu traversé d'un passage, caractériséeen ce que chaque pale creuse ( 1) est perforée (en 2) sur son cté sous le vent et par un passage ( 4) à travers le moyeu ( 3), elle est  1. Boat propeller of the type comprising two or more perforated hollow blades mounted on a hub through which a passage passes, characterized in that each hollow blade (1) is perforated (in 2) on its leeward side and by a passage (4) through the hub (3), it is connectée au côté poussée de l'hélice.  connected to the thrust side of the propeller. 2. Hélice selon la revendication 1, caractérisée en ce que chaque passage à travers le moyeu du côté poussée de l'hélice est dirigé sensiblement parallèlement à l'axe  2. Propeller according to claim 1, characterized in that each passage through the hub on the thrust side of the propeller is directed substantially parallel to the axis de rotation.of rotation. 3. Hélice selon l'une quelconque des revendications  3. Propeller according to any one of the claims 1 ou 2, caractérisée en ce que les perforations sont disposées parallèlement et, en regardant dans la direction  1 or 2, characterized in that the perforations are arranged parallel and, looking in the direction de rotation de l'hélice, juste derrière la tractrice ( 5).  rotation of the propeller, just behind the tracer (5).
FR8219454A 1981-11-20 1982-11-19 VESSEL PROPELLER HAVING TWO OR MORE PERFORATED HOLLOW BLADES Withdrawn FR2516890A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL8105275A NL8105275A (en) 1981-11-20 1981-11-20 SHIP SCREW, PROVIDED WITH TWO OR MORE PERFORATED HOLLOW BLADES.

Publications (1)

Publication Number Publication Date
FR2516890A1 true FR2516890A1 (en) 1983-05-27

Family

ID=19838424

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8219454A Withdrawn FR2516890A1 (en) 1981-11-20 1982-11-19 VESSEL PROPELLER HAVING TWO OR MORE PERFORATED HOLLOW BLADES

Country Status (14)

Country Link
BE (1) BE895081A (en)
DE (1) DE3242589A1 (en)
DK (1) DK508982A (en)
ES (1) ES275637Y (en)
FI (1) FI823935L (en)
FR (1) FR2516890A1 (en)
GB (1) GB2110307B (en)
GR (1) GR76737B (en)
IE (1) IE53509B1 (en)
IT (1) IT1153059B (en)
NL (1) NL8105275A (en)
NO (1) NO823840L (en)
PT (1) PT75872B (en)
SE (1) SE8206578L (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AUPO620197A0 (en) * 1997-04-14 1997-05-08 Leung, Chi Keung Extra byte propeller
AU708767C (en) * 1997-04-14 2002-08-29 Chi Keung Leung Improved fluid displacing blade
AU2002355362B2 (en) 2001-08-08 2005-02-03 Robin David Shaw Cavitation alleviation and line cutting device
GB0222466D0 (en) 2002-09-27 2002-11-06 Marine Current Turbines Ltd Improvements in rotor blades and/or hydrofoils
GB0617828D0 (en) 2006-09-11 2006-10-18 Ambassador Marine Ltd Line cutter
AU2006233263B2 (en) * 2006-10-02 2012-05-03 Aon Invent Llc Safety propeller
RU2539870C1 (en) * 2013-09-30 2015-01-27 Федеральное Государственное Автономное Образовательное Учреждение Высшего Профессионального Образования "Дальневосточный Федеральный Университет" (Двфу) Propeller screw
CN105221321A (en) * 2014-06-25 2016-01-06 上海电气风电设备有限公司 The open blade structure of ocean current power generation unit inner chamber

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE17146C (en) * FR. WREDE in Duisburg, Crefelderstr. 20 Ship propellers with hollow wings, the cavity of which communicates with the surrounding water
GB191206468A (en) * 1912-03-15 1912-05-23 Wynford Brierley Improvements in Propellers and Fans.
US1604994A (en) * 1925-08-31 1926-11-02 Patrick P Grosso Propeller
US1666517A (en) * 1927-01-25 1928-04-17 Tully Edward Ernest Propelling device for ships
GB291281A (en) * 1927-10-29 1928-05-31 William Lovis Improvements in or relating to ships' propellers
US2511156A (en) * 1946-08-07 1950-06-13 Richard J Glass Propeller
NL7803906A (en) * 1978-04-12 1979-10-16 Noordvos Schroeven Bv METHOD, DEVICE AND PROPELLER FOR DISTRIBUTING A GAS, POWDER OR LIQUID MATERIAL IN A LIQUID.

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB400913A (en) * 1932-01-29 1933-11-02 Louis Jauch Improvements in hydraulic or aerial propellers or receivers
GB396716A (en) * 1932-02-08 1933-08-08 Edward Ernest Tully Improvements in or relating to ships' propellers
GB1200162A (en) * 1966-05-24 1970-07-29 Robert Filmer Bridgland Improvements in blades for screw-propellers and lifting rotors

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE17146C (en) * FR. WREDE in Duisburg, Crefelderstr. 20 Ship propellers with hollow wings, the cavity of which communicates with the surrounding water
GB191206468A (en) * 1912-03-15 1912-05-23 Wynford Brierley Improvements in Propellers and Fans.
US1604994A (en) * 1925-08-31 1926-11-02 Patrick P Grosso Propeller
US1666517A (en) * 1927-01-25 1928-04-17 Tully Edward Ernest Propelling device for ships
GB291281A (en) * 1927-10-29 1928-05-31 William Lovis Improvements in or relating to ships' propellers
US2511156A (en) * 1946-08-07 1950-06-13 Richard J Glass Propeller
NL7803906A (en) * 1978-04-12 1979-10-16 Noordvos Schroeven Bv METHOD, DEVICE AND PROPELLER FOR DISTRIBUTING A GAS, POWDER OR LIQUID MATERIAL IN A LIQUID.

Also Published As

Publication number Publication date
SE8206578D0 (en) 1982-11-18
BE895081A (en) 1983-05-24
IE822759L (en) 1983-05-20
GR76737B (en) 1984-08-30
IE53509B1 (en) 1988-11-23
PT75872A (en) 1982-12-01
DE3242589A1 (en) 1983-05-26
IT8224301A1 (en) 1984-05-17
IT1153059B (en) 1987-01-14
PT75872B (en) 1985-01-09
NO823840L (en) 1983-05-24
FI823935A0 (en) 1982-11-17
ES275637Y (en) 1984-10-01
GB2110307B (en) 1985-01-30
IT8224301A0 (en) 1982-11-17
FI823935L (en) 1983-05-21
SE8206578L (en) 1983-05-21
NL8105275A (en) 1983-06-16
ES275637U (en) 1984-03-01
GB2110307A (en) 1983-06-15
DK508982A (en) 1983-05-21

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