WO2003025393A1 - Aerogenerateur a transmission de puissance pneumatique - Google Patents

Aerogenerateur a transmission de puissance pneumatique Download PDF

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Publication number
WO2003025393A1
WO2003025393A1 PCT/HU2002/000089 HU0200089W WO03025393A1 WO 2003025393 A1 WO2003025393 A1 WO 2003025393A1 HU 0200089 W HU0200089 W HU 0200089W WO 03025393 A1 WO03025393 A1 WO 03025393A1
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WO
WIPO (PCT)
Prior art keywords
propeller
air
blade
blades
wind machine
Prior art date
Application number
PCT/HU2002/000089
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English (en)
Inventor
Endre Mucsy
Original Assignee
Endre Mucsy
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 Endre Mucsy filed Critical Endre Mucsy
Publication of WO2003025393A1 publication Critical patent/WO2003025393A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D15/00—Transmission of mechanical power
    • F03D15/05—Transmission of mechanical power using hollow exhausting blades
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • the invention relates to a wind machine with pneumatic power transmission, especially a wind machine having a propeller mounted for and capable of free rotation around a substantially horizontal axis of rotation within a head mounted in bearings on top of and thus, allowed for pivotal movement around a substantially vertical axis relative to a tower.
  • the propeller consists of at least one hollow, preferably twisted blade the blade angle of which decreases from a root portion of the at least one blade in the direction towards a peripheral tip end portion of said blade.
  • said head and said at least one blade of the propeller there is provided at least one substantially air-tight continuous air duct having at least one air intake opening in the proximity of the base of the tower, and at least one air outlet opening at or in the proximity of the tip end portion of said at least one blade of the propeller.
  • the at least one air-tight continuous air duct is substantially sealed, especially in the range of the bearings which allow the relative rotation between said propeller and said head, and said head and said tower, respectively.
  • the wind machine of the invention further comprises, arranged downstream said air intake opening of said air-tight continuous air duct within said tower, or within an additional air channel connecting to said air duct, a power unit such as an air-turbine or air- motor capable of converting the energy content of an air flow through said air duct into energy of rotation.
  • a power unit such as an air-turbine or air- motor capable of converting the energy content of an air flow through said air duct into energy of rotation.
  • a preferably rotary machine such as a mill, a pump or an electric generator capable of directly utilising the energy of rotation is coupled to said power unit.
  • mechanical coupling is eliminated between the propeller and the preferably rotary machine, e.g. generator.
  • the hollow blade(s) of the propeller, the head and the vertical tower form a closed air duct system.
  • the wind machines of such design differ from traditional and widely used wind machines by eliminating the mechanical power transmission between the propeller and the machine utilising the energy of the wind, especially a generator, because the power transmission is effected by the air flow streaming through the substantially sealed continuous air duct of the device.
  • Swiss Patent Specification CH 282829 describes a wind machine having a propeller unit with a hollow blade terminating in an air outlet opening lying in a plane perpendicular to the radius of the blade.
  • air is forced to discharge through the blade tip air outlet opening by the centrifugal force, whereby a flow of air capable of driving an air turbine is generated.
  • the centrifugal force plays effectively an important role, with wind machines, due to the low density of air pumped as driving medium and the minor angular speed of the propeller, the centrifugal force is so small that the air flow generated within the machinery exclusively by the latter, is hardly sufficient for a power transfer of practical use.
  • each hollow blade of the propeller of the wind machine terminates in a pipe-shaped air outlet opening facing, in cross-section, away from the wind in a similar manner as the openings of draught-increasing weathercocks commonly used on top of chimneys.
  • the article introduces the design and the construction of, and presents the initial experimental results gained with the depression-principle wind machine.
  • the inner air flow generated, when in operation, in the internal air duct of the machine is again assigned to the centrifugal force.
  • the embodiment of the wind machine described in the article increases the suction effect in comparison with the design disclosed in the CH 282829 patent referred to further above, but the increase achieved does not seem to be efficient at all.
  • the designers of the extremely large experimental wind machine have tried to compensate for the low suction effect by increasing the so called speed coefficient ⁇ of the wind machine, i.e. the value of the speed of blade rotation at the periphery of the swept circle of the propeller for a given wind speed.
  • the main object of the present invention is to eliminate the above mentioned deficiencies of the hitherto known wind machines operating by pneumatic power transmission. Another important object of the invention is to improve the operational characteristics and especially to increase the low power efficiency factor of the prior art wind machines of the kind concerned. It has been recognised that the above objects and other advantages can be achieved and realised by applying a number of different features of the present invention either one by one, or in well harmonised combinations as set forth below.
  • an outer peripheral portion of defined extension of the propeller is designed and shaped as an aerodynamic air pump unit which is, at least functionally, separated from a remaining central inner portion of said propeller.
  • the at least one air outlet opening of the air-tight continuous air duct is arranged, as a functional part of said aerodynamic air pump unit, within said outer peripheral portion of the propeller in a convex profile surface of the at least one blade exposed, when rotating, to depression.
  • the propeller has at least one tip end border member capable of preventing pressure equalisation between said convex profile surface of said at least one blade exposed to depression, and an opposite profile surface of said at least one blade exposed when rotating, to a higher pressure.
  • the at least one border member is arranged at the substantially outermost periphery of said outer peripheral portion of said propeller, and in substantially parallel arrangement to the at least one border member at least one partition member is provided along an inner border line of said aerodynamic air pump unit facing said remaining central inner portion of the propeller.
  • the air pump units arranged on the blade tip ends of the propeller and having the constructional features according to the invention as listed above, are able to generate, independently of the wind speed, the maximum air flow in the substantially air-tight continuous air duct of the wind machine.
  • each blade is designed and shaped so as to serve as an aerodynamic pump unit, and each aerodynamic air pump unit is provided with a separate border member and a parting member arranged on and secured to said at least one blade of the propeller.
  • the border members and parting members may preferably be designed as continuous ring-shaped component parts secured to and interconnecting, in concentric arrangement to each other and the axis of rotation of the propeller, said hollow blades of the latter.
  • profile sections of the blade(s) are of substantially the same cross- sectional shape but of larger cross-sectional area, especially of greater thickness of profile, and such profile sections are facing and sloping in the same direction as the profile sections of the blade(s) that lie within the remaining central inner portion of the propeller.
  • said at least one air outlet opening of the aerodynamic air pump unit of said propeller is associated with at least one air baffle of the shape and position capable of increasing the suction effect of the aerodynamic air pump unit.
  • said at least one air outlet opening arranged substantially at the outermost peripheral tip end of said at least one blade of said propeller may be associated with at least one Venturi tube section the axis of which lies, with respect of the plane of rotation of the propeller, inclined substantially at an angle identical with the blade angle of the at least one blade of said propeller measured in a blade section lying within a region between the half and the quarter of the blade radius.
  • the dimensions of the air pump unit and those of its associated elements listed above should be chosen so that under normal load, the peripheral speed of the propeller is kept and remains constantly and substantially in the vicinity of a speed coefficient ⁇ that results in the maximum power factor. While an optimum load of the propeller can still not fully guaranteed by applying the above inventive features individually or in their sensible combinations, further improvements leading towards the full problem solution can be achieved by optimising the load on the air flow within the air duct of the wind machine of the invention, whereby novel dimensioning and design alternatives of the propeller of wind engine have become feasible.
  • the outer end of the blade which should be thicker.
  • the at least one blade of the propeller constitutes not only the most important component part of the wind engine, but it forms also the most critical section of the substantially air-tight continuous air duct of the wind machine.
  • blades of maximum possible inner cross- section would be preferred.
  • the air pump units mounted on the ends of the blades have an increasing effect on the suction, thus permitting the decrease of the speed coefficient ⁇ .
  • the loss on the outer surface decreases, and the number and the aggregate cross-section of the blades can be increased, which measures lead to a minimum value of the internal losses.
  • the use of wind engines according to the invention equipped with air pump units dimensioned for the optimum makes it possible to arrive at wind machines of improved efficiency.
  • the border and parting members provided in wind machines according to the invention efficiently prevent the flow of air between regions of different pressures along the surfaces the propeller blade(s).
  • the propeller blades of the wind machine according to the invention have, in contrast to those used traditionally, a significant cross-sectional thickness even at their ends, i.e. tip portions.
  • possible air flow by-passing the blade tip ends between regions of the blade surface exposed to higher pressure and depression, respectively may result in generating a local a vortex band with major loss consequences.
  • Such losses may be reduced by applying a border member.
  • the propeller blade portions where the air outlet openings are arranged do not contribute to rotating the propeller, this section serves to the purpose of constituting the air pump unit only, and thus, to braking the rotation of the propeller.
  • the air pressures to which under operation, the air pump unit surfaces are exposed differ from those prevailing along other blade portions which serve to making the propeller rotate. This observation results in the need for arranging a parting member between said blade surface portions of different function.
  • the axial speed of the air flow leaving the propeller is lower than that of the wind, and the air flow leaving the propeller rotates in a direction opposite to the direction of rotation of the propeller. Due to this effect, the air flow leaving the propeller has still a remaining motional energy content of significant value, and this is why the propeller is not able to exploit the whole energy content of the oncoming wind.
  • the gain of wind energy can, at maximum, only be equal the difference between the energy contents of the oncoming wind and the flow of air leaving the propeller.
  • the energy gained from the wind with known traditional wind machines is transferred from the propeller in the form as mechanical torque and rotary motion by the propeller shaft that is mechanically coupled to a rotary machine such as a generator or alternator whereby electric power is generated.
  • the percentile ratio of electric power produced to the energy content of wind is called the power efficiency factor of the wind machine.
  • the power efficiency factor of conventionally designed, state-of-the-art wind machines amounts to 30 to 40 per cent, at the maximum.
  • Such wind machines are, however, unable to utilise the modest energy content of winds blowing at speeds of 3 to 5 m/s. Since in most areas of continental climate such light- or medium-speed winds prevail, due to the above fact, the known traditional wind machines are incapable of exploiting a major part of the total wind power available.
  • blade portions of the blades of the propeller which form part of the aerodynamic air pump unit(s) of the propeller are designed and shaped as blades of an axial fan having the same number of blades as the propeller of the wind machine has.
  • Said axial fan blades have blade angles that are inclined, with respect of the plane of rotation of the propeller, substantially at angles identical with the blade angles of the at least one blade measured in blade sections lying within the remaining central inner portion of said propeller in a region of the latter between the half and the quarter of the blade radius. It has proved to be of further advantage, if the profile sections of the axial fan blades are in shape substantially identical with the mirror images of the profile sections of the blades which profile sections lie in blade portions of the blades of said propeller within the remaining central inner portion of the latter.
  • Embodiments of the wind machine of the invention applying axial fan blades of the kind and design described above, can also preferably be associated with air baffles of appropriate design and arrangement and with Venturi tube sections as mentioned and described further above.
  • Using axial fan type air pump units in wind machines of the invention results in further advantageous effects. One of them is that the air pushed forward exerts a load on the fan blades which acts in a direction against the wind.
  • This load acts on the blade(s) of the propeller in the opposite direction as the load of the oncoming wind, whereby it reduces the load acting on the bearings and the tower itself.
  • the blade angle measured between the axial fan blades and the plane of rotation of the propeller is significantly greater than the blade angle of the propeller blade(s) in the region of the blade tip(s) normally would be. Due to this characteristic feature of the invention, with the wind intensifying, the propeller of the wind machine is more efficiently accelerated when in standstill or at slow rotation. Accordingly, the air pump unit(s) arranged at or in the proximity of the blade tip(s) act and operate, at least temporarily, as a propeller of a wind machine of low speed coefficient ⁇ .
  • the blade portions of the blades constituting part of the air pump units are designed and shaped as axial fan blades
  • preferred constructional designs are characterised in that a higher number of axial fan blades than the number of the blades of the propeller are arranged between a border member and a partition member provided by continuous ring-shaped component parts secured to and interconnecting, in concentric arrangement to each other and the axis of rotation of said propeller, said hollow blades of the latter.
  • the blade portions of the blades of the propeller forming part of the aerodynamic air pump units of the propeller are preferably designed and shaped as blades of at least two axial fans that are arranged in downstream direction and in spaced relationship to one another.
  • the objects of the present invention notably the improvement of certain main operational characteristics of the known wind machines using pneumatic power transmission, especially an increase of their low power efficiency factor, may also be achieved, at least to a more moderate extent, by wind machines of the invention in which an outer peripheral portion of defined extension of said propeller is designed and shaped as an aerodynamic air pump unit which is, at least functionally, separated from a remaining central inner portion of said propeller.
  • a solid wall Venturi pipe section is arranged around each air outlet opening at the substantially outermost peripheral tip end of the at least one blade of the propeller, and the inner cross-sectional area the Venturi pipe section follows, in spaced relationship thereto, the inner contour line of the air outlet opening of said air-tight continuous air duct of said wind machine.
  • Fig. 1 is a diagrammatic view representing, by way of example only, a first embodiment the wind machine according to the present invention
  • Fig. 2 shows in elevation front view, as an example again, a four-blade propeller of the wind machine of the invention according to Fig. 1 ,
  • Fig. 3 is an elevational end view of one of the blades of the propeller of a wind machine, in which an air pump unit located at the tip end of the blade is shown, and cross-sectional profile sections of radially decreasing blade angle of the twisted blade are represented, turned into the plane of the drawing, in different distances from the axis of rotational,
  • Fig. 4 is a schematic sketch of an other preferred embodiment of the wind machine according to the present invention.
  • Fig. 5 is a front view, taken from direction of wind, of the embodiment of Fig. 4,
  • Fig. 6 to 8 and Fig. 10 and 12 are diagrammatic sectional views taken along the plane H-H of Fig. 3 which show preferred practical examples of profile sections of the at least one blade of the propeller lying in the outer peripheral portion of the latter that is, in accordance with the present invention, designed and shaped as an aerodynamic air pump unit,
  • Fig. 9 shows another preferred design of the outer peripheral aerodynamic pump unit portion of the propeller in a view perpendicular to the plane of rotation of the propeller blade(s),
  • Fig. 11 depicts in fragmentary elevation in side view seen from the arrow XI of Fig. 5 and with the border member 14 removed, a detail of a preferred embodiment of the propeller of the wind machine according to the invention shown in Fig. 5,
  • Fig. 13 is a diagrammatic view representing, from a direction perpendicular to the axis of rotation of the wind machine, a preferred alternative aerodynamic air pump tip end design of the at least one blade of the wind machine according to the invention, while
  • Fig. 14 shows a diagrammatic section of the alternative aerodynamic air pump tip end design of the at least one blade of the wind machine taken along the plane XIV-XIV of Fig. 13.
  • a wind machine according to the invention shown, by way of example only, in Fig. 1 of the attached drawing, has a head 11 mounted for pivotal movement around a vertical axis on top of a tower 10, and a propeller 12 mounted for free rotation around a substantially horizontal axis in the head 11.
  • the propeller 12 in the embodiment shown the propeller 12 consists of four hollow blades 16 of the twisted type, known per se. Turned into the plane of the drawing and taken in different distances from the axis of rotation of the propeller 12, Fig. 3 also indicates profile sections 17 of radially decreasing blade angle of the hollow, twisted blade 16.
  • Bearings of the propeller 12 in the head 11 and latter within the tower 10 are provided with preferably labyrinth seals which sealingly close the inner space of an air-tight continuous air duct 21 against the surrounding atmosphere whereby the indraught of false air from the environment into said continuous air duct 21 , extending over the inner space of the tower 10, the head 11 and the at least one hollow blade 16 of the wind machine, is efficiently prevented.
  • the substantially air-tight continuous air duct 21 has an air intake opening 22, and near the circumference of the propeller unit 12 the air duct 21 terminates in at least one air outlet opening 18 indicated for example in Figs.
  • an outer peripheral portion of defined extension of the propeller 12 is designed and shaped as an aerodynamic air pump unit 13 which is, at least functionally, separated from a remaining central inner portion of said propeller 12.
  • a power unit 23 such as an air-turbine or air-motor capable of converting the energy content of an air flow through the air duct 21 into energy of rotation.
  • a preferably rotary machine 24 such as a mill, a pump or an electric generator capable of directly utilising the energy of rotation is mechanically coupled to said power unit 23.
  • the air outlet openings 18 of the air duct 21 are arranged as functional part of said aerodynamic air pump unit 13, within the outer peripheral portion of the propeller 12 in a convex profile surface of its at least one blade 16 exposed when rotating, to depression.
  • the propeller 12 of the wind machine of the invention has at least one tip end border member 14 capable of and serving to preventing pressure equalisation between said convex profile surface of said at least one blade 16 exposed to depression, and an opposite profile surface of the at least one blade 16 exposed when rotating, to a higher pressure.
  • the at least one border member 14 is arranged at the substantially outermost periphery of the outer peripheral portion of the propeller 12. In substantially parallel arrangement to said at least one border member 14 at least one parting member 15 is provided along an inner border line of said aerodynamic air pump unit 13 said inner border facing said remaining central inner portion of the propeller 12.
  • the propeller 12 consists of not more than six hollow blades 16, such as the embodiment shown, by way of example only, in Figs. 1 and 2 of the drawing where the propeller 12 consists of four blades 16, the outer peripheral portion of each blade 16 is designed and shaped so as to serve as an aerodynamic pump unit 13, and each aerodynamic air pump unit 13 is provided with a separate border member 14 and a parting member 15 arranged on and secured to the blades 16 of the propeller 12.
  • the propeller 12 consists of at least three hollow blades 16, such as shown, by way of another example again, in Figs.
  • the border members 14 and parting members 15 may be designed as continuous ring-shaped component parts secured to and interconnecting, in concentric arrangement to each other and the axis of rotation of the propeller 12, the hollow blades 16 of the latter.
  • the suction effect can be efficiently increased if in blade portions 16' forming a part of the air pump unit 13 of the propeller 12, profile sections 17' of the blade(s) 16 are of substantially the same cross-sectional shape but of larger cross-sectional area, especially of greater thickness of profile, and are facing and sloping in the same direction as profile sections 17 of the blade(s) 16 within the remaining central inner portion of the propeller 12, as indicated in Fig. 7 of the drawing.
  • the at least one air outlet opening 18 of the aerodynamic air pump unit 13 of said propeller 12 can be associated with at least one air baffle 19 of the shape and position capable of increasing the suction effect of the aerodynamic air pump unit 13.
  • the suction effect generated in the inner space of the blades 16 can also be increased by using the constructional feature shown in Fig. 9, according to which the at least one air outlet opening 18 arranged substantially at the outermost peripheral tip end of the at least one blade 16 of the propeller 12 is associated with at least one Venturi tube section 20 the axis of which lies, with respect to the plane of rotation of the propeller 12, inclined at an angle which is substantially identical with the blade angle of the at least one blade 16 of said propeller 12 measured in a blade section lying within a region between the half and the quarter of the blade radius.
  • the wind power that makes the propeller 12 rotate is only partially utilised for causing the air to flow through the substantially air-tight continuous air duct 21 of the wind machine of the invention.
  • Another part of the available wind power is released and transferred to the ambient air around the air pump unit(s) 13 of the propeller 12.
  • This amount of the wind power constitutes an inevitable loss of energy, as this outer air motion induces the depression which is responsible for the generation of the inner air flow through the air duct 21 of the wind machine.
  • this kind of loss of energy can be substantially reduced if as shown in Fig.
  • blade portions 16' of the blades 16 of the propeller 12 which form part of the aerodynamic air pump unit 13 are designed and shaped as blades 16 of an axial fan having the same number of blades as the propeller 12 of the wind machine has.
  • Such axial fan blades 16 should have blade angles that are inclined, with respect of the plane of rotation of the propeller 12, at angles substantially identical with the blade angles of the at least one blade 16 of the propeller 12 measured in blade sections lying within the remaining central inner portion of the latter in its region between the half and the quarter of the blade radius.
  • profile sections 17' of the axial fan blades 16 should in shape be substantially identical with the mirror images of the profile sections of the blades 16 lying in blade portions of the blades 16 of the propeller 12 within the remaining central inner portion of the latter.
  • Embodiments utilising the above characteristic feature of the present invention are shown in Figs. 4, 5 and 11 of the attached drawing.
  • a higher number of axial fan blades than the actual number of the blades 16 of the propeller 12 are arranged between a border member 14 and a parting member 15 provided by continuous ring-shaped component parts secured to and interconnecting, in concentric arrangement to each other and the axis of rotation of said propeller 12, the hollow blades 16 of the latter.
  • FIG. 12 of the drawing An additional feature serving to the desired increase of efficiency is shown in Fig. 12 of the drawing, where blade portions 16' of the blades 16 of the propeller 12 forming part of the aerodynamic air pump unit 13 are designed and shaped as blades 16 of at least two axial fans that are arranged in downstream direction and in spaced relationship to one another.
  • each of the above embodiments of the wind machine described above shows the common and essential inventive features that the air outlet openings 18 of the air duct 21 are arranged on the convex depression surface of the profile section 17' of the at least one blade 16 of the propeller 12, and that at least one tip end border member 14 capable of preventing pressure equalisation between said convex profile surface of the at least one blade 16 exposed to depression, and an opposite profile surface of said at least one blade 16 exposed when rotating, to higher pressure, is arranged at the substantially outermost periphery of the outer peripheral portion of the propeller 12.
  • the power efficiency of state-of-the-art wind machines working on the depression principle and thus, with pneumatic power transmission by having an air outlet opening 18 facing in a direction away from the wind can highly be improved by simply applying a structure in which according to the invention an outer peripheral portion of defined extension of the propeller 12 is designed and shaped as an aerodynamic air pump unit 13 which is, at least functionally, separated from a remaining central inner portion of the propeller 12, and wherein a solid wall Venturi pipe section 20 is arranged around each air outlet opening 18 at the substantially outermost peripheral tip end of the at least one blade 16 of the propeller 12.
  • the inner cross-sectional area the Venturi pipe section 20 follows, in spaced relationship thereto, the inner contour line of the air outlet opening 18 of said air-tight continuous air duct 21 of said wind machine.

Abstract

L'invention concerne un arérogénérateur comprenant un propulseur (12) monté pour une rotation libre à l'intérieur d'une tête (11) et pouvant effectuer un déplacement pivotant par rapport à une tour (10). Le propulseur (12) comprend une aube creuse, de préférence une aube à torsion (16). A l'intérieur de la tour (10), de la tête (11), et des aubes (16) du propulseur (12), se trouve un conduit continu étanche à l'air (21) présentant une arrivée d'air (22) à proximité de la base de la tour (10), et une sortie d'air (18) au niveau de la pointe des aubes (16), ou à proximité de la pointe des aubes (16) du propulseur (12). L'aérogénérateur comprend également, en aval de l'arrivée d'air (22) du conduit étanche à l'air (21), une unité de puissance (23), telle qu'une turbine à air, pouvant convertir l'énergie de l'écoulement d'air à travers le conduit d'air (21) en énergie de rotation, et une machine rotative (24) permettant d'utiliser directement l'énergie de rotation est accouplée à l'unité de puissance (23). Une partie périphérique extérieure du propulseur (12) est formée, en tant que pompe à air aérodynamique (13), qui est séparée de la partie intérieure centrale restante dudit propulseur (12). L'orifice de sortie d'air est disposé, en tant que partie fonctionnelle de la pompe à air (13), à l'intérieur de la partie périphérique extérieure dudit propulseur (12) sur une surface à profil convexe des aubes (16) exposée, lors d'une rotation, à une dépression. Le propulseur (12) présente au moins un élément (14) de limite d'extrémité de pointe pouvant permettre d'éviter une égalisation de pression entre la surface à profil convexe des aubes (16) exposée à une dépression, et une surface à profil opposé des aubes (16) exposée lors d'une rotation, à une pression élevée. Au moins un élément de séparation (15) se trouve le long de la ligne de limite intérieure de la pompe à air (13), faisant face à la partie intérieure centrale restante du propulseur (12).
PCT/HU2002/000089 2001-09-20 2002-09-13 Aerogenerateur a transmission de puissance pneumatique WO2003025393A1 (fr)

Applications Claiming Priority (2)

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HUP0103756 2001-09-20
HU0103756A HU224256B1 (hu) 2001-09-20 2001-09-20 Szélgép pneumatikus erőátvitellel

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012077118A3 (fr) * 2010-12-09 2012-08-16 Ramot At Tel-Aviv University Ltd. Procédé et système d'alimentation d'un écoulement de fluide destiné à un rotor
CN103306892A (zh) * 2012-04-18 2013-09-18 王政玉 一种动力翼片
WO2014091264A1 (fr) * 2012-12-14 2014-06-19 Endre Mucsy Rotor pour une machine éolienne ayant une transmission d'énergie pneumatique

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GB213022A (en) * 1923-01-03 1924-03-27 Charles Esmond Nightingale Improvements in windmills and windmotors
FR578074A (fr) * 1923-03-13 1924-09-16 Inst Voor Aero En Hydro Dynami Machine motrice à fluide en écoulement
FR905544A (fr) * 1944-06-28 1945-12-06 Cem Comp Electro Mec Aéromoteur à transmission pneumatique
GB700879A (en) * 1950-06-09 1953-12-09 Jean Edouard Andreau Improvements in rotors for wind motors
FR1070262A (fr) * 1952-02-02 1954-07-21 Chantiers De France Atel Pale creuse de rotor à pas variable, notamment pour rotors de moteurs à vent
US4147472A (en) * 1977-04-07 1979-04-03 Alberto Kling Turbine rotor
DE3723101A1 (de) * 1987-07-13 1989-02-16 Manfred Uellenberg Schrauben- oder rotorblatt fuer kraft- und arbeitsschraubenraeder und drehfluegelraeder
FR2758594A1 (fr) * 1997-01-20 1998-07-24 Alexandroff Gregoire Perfectionnements aux aerogenerateurs birotors

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB213022A (en) * 1923-01-03 1924-03-27 Charles Esmond Nightingale Improvements in windmills and windmotors
FR578074A (fr) * 1923-03-13 1924-09-16 Inst Voor Aero En Hydro Dynami Machine motrice à fluide en écoulement
FR905544A (fr) * 1944-06-28 1945-12-06 Cem Comp Electro Mec Aéromoteur à transmission pneumatique
GB700879A (en) * 1950-06-09 1953-12-09 Jean Edouard Andreau Improvements in rotors for wind motors
FR1070262A (fr) * 1952-02-02 1954-07-21 Chantiers De France Atel Pale creuse de rotor à pas variable, notamment pour rotors de moteurs à vent
US4147472A (en) * 1977-04-07 1979-04-03 Alberto Kling Turbine rotor
DE3723101A1 (de) * 1987-07-13 1989-02-16 Manfred Uellenberg Schrauben- oder rotorblatt fuer kraft- und arbeitsschraubenraeder und drehfluegelraeder
FR2758594A1 (fr) * 1997-01-20 1998-07-24 Alexandroff Gregoire Perfectionnements aux aerogenerateurs birotors

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012077118A3 (fr) * 2010-12-09 2012-08-16 Ramot At Tel-Aviv University Ltd. Procédé et système d'alimentation d'un écoulement de fluide destiné à un rotor
US10138870B2 (en) 2010-12-09 2018-11-27 Ramot At Tel-Aviv University Ltd. Method and system of providing fluid flow for a rotor
CN103306892A (zh) * 2012-04-18 2013-09-18 王政玉 一种动力翼片
WO2014091264A1 (fr) * 2012-12-14 2014-06-19 Endre Mucsy Rotor pour une machine éolienne ayant une transmission d'énergie pneumatique

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HU224256B1 (hu) 2005-07-28
HUP0103756A3 (en) 2003-05-28
HU0103756D0 (en) 2001-11-28
HUP0103756A2 (hu) 2003-04-28

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