EP0070857A1 - Rotor entraine par un fluide - Google Patents

Rotor entraine par un fluide

Info

Publication number
EP0070857A1
EP0070857A1 EP19820900410 EP82900410A EP0070857A1 EP 0070857 A1 EP0070857 A1 EP 0070857A1 EP 19820900410 EP19820900410 EP 19820900410 EP 82900410 A EP82900410 A EP 82900410A EP 0070857 A1 EP0070857 A1 EP 0070857A1
Authority
EP
European Patent Office
Prior art keywords
rotor
support member
blades
sail
shaft
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Withdrawn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
EP19820900410
Other languages
German (de)
English (en)
Inventor
Anders Lundqvist
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 EP0070857A1 publication Critical patent/EP0070857A1/fr
Withdrawn legal-status Critical Current

Links

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
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • 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
    • Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction

Definitions

  • This invention relates to a fluid driven rotor, particularly but not exclusively intended to be driven by the wind
  • Rotors and turbines of different types for utilizing the energy inherent in the wind are known.
  • substantially two types exist viz. the type at which the turbine blades extend substantially perpendicularly from the turbine shaft (propeller type), and the type at which the turbine blades extend substantially in parallel with the turbine shaft.
  • wind velocities of up to 6 m/s are required. At lower wind velocities the devices are non-productive. Both these types of devices, moreover, have the characterizing feature that their rotational speed is very low compared with the wind velocity.
  • the present invention relates to turbines of the type, which comprises a vertical shaft with blades rotating about the same.
  • the invention as it is defined in the characterizing clauses of the attached claims provides a fluid driven rotor or turbine, which is characterized by high rotational speed and which has an efficient torque already at wind velocities of 2 m/s, irrespective of the wind direction.
  • Fig. 1 is a schematic lateral view of a device according to the present invention
  • Fig. 2 is a schematic section through the device according to Figs. 1 and 3, and
  • Fig. 3 shows another embodiment of the invention.
  • the rotor according to the invention in principle comprises a shaft 1, which downwardly carries a support member 2 and upwardly carries a support member 3.
  • the support members 2 and 3 have the form of spoked rings, and the diameter of the support member 2 exceeds that of the support member 3.
  • Between the peripheral portions of the support members extend turbine blades in uniformly spaced relationship along the respective periphery and in such a number, that the distance between two adjacent blades is smaller than the blade width, the blade chord.
  • the respective blade here consists of a forward stay 5, seen in the rotation direction of the turbine, which is braced between ween the two support members, and a sail 4 extending from the stays. See also the lower portion of Fig. 2.
  • the sail may be of a suitable material, such as fabric, plastic dacron (R) or the like,
  • the sail in its turn is braced in extended position at the support members by suitable fastening means 6. Due to the fact that at least one of the support members 2 and 3 is fixed on the shaft 1, the turbine, for example, can drive a generator (not shown) positioned in the base 7.
  • the blades with the support members form a truncated cone, the "shell” of which shall form an angle ⁇ to the shaft of about 20-30°, preferably 25-26°, which has proved to be an optimum angle range.
  • the rotational speed of the rotor decreases.
  • the blade can be made homogeneous of metal, for example light metal, or reinforced plastic material.
  • the blade 45 then preferably is slightly S-shaped and has a thin profile, see the upper part of Fig. 2. As the speed of the blade is higher downwardly at the turbine than upwardly, because of the inclination of the blades, the blade thickness for aerodynamic reasons should be greater at the upper support member 2 than at the lower support member.
  • a turbine according to the invention which consists of two truncated cone-shaped partial turbines 9 and 10. As appears from Fig. 3, they are mounted on the same shaft 1 and face each other with their base surfaces.
  • the turbine blades 45 (for reasons of clarity not all are shown in the Figure) are arranged so that the partial turbines rotate in opposed directions.
  • the parts of the generator are given a speed in relation to each other which is twice as high as the rotation speed of each of the partial turbines.
  • the generator which can be manufactured in conventional manner, is not a part of the invention, either, and therefore is not described in detail.
  • the air leaves the turbine through the uppermost and lowermost support member with smaller diameter.
  • the blades 45 can be given feathering position, depending on the wind velocity, and thereby to obtain maximum efficiency degree of the turbine at different wind velocities.
  • the feathering position can be effected automatically or manually.
  • the technical solution of such feathering does not involve, either, an inventor's work and can be realized in many different ways by applying known art. No feathering mechanism, therefore, is described in detail.
  • the double turbine shown in Fig. 3 also can be used to drive a generator in the foundation via the counterrotating shafts of the partial turbines. It is, of course, understood to fall within the scope of the invention that machines other than generators can be driven.
  • the invention also can be used, for example, for driving the propeller of a boat.
  • the invention can be combined with an axial fan, propeller, located at the wider support member 2 and designed so as to be driven by the air flowing out of the rotor.
  • the support member 3 in that case preferably should be closed.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Wind Motors (AREA)

Abstract

Un rotor entraine par un fluide, specialement pour fonctionner au vent, consiste en des aubes (4) situees autour de la generatrice d'un tronc de cone et s'etendant dans son sens longitudinal. L'invention est caracterisee en ce que la distance entre deux aubes adjacentes (4, 5, 45) est plus petite que la largeur de l'aube respective, et qu'au moins l'un des organes de support (2, 3) est ouvert et permet une communication entre l'interieur du rotor et le milieu ambiant, et que les aubes (4, 5, 45) sont inclinees suivant un angle compris entre 20 et 30 par rapport a l'axe du rotor.
EP19820900410 1981-02-09 1982-02-09 Rotor entraine par un fluide Withdrawn EP0070857A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8100876A SE8100876L (sv) 1981-02-09 1981-02-09 Fluidumdriven rotor
SE8100876 1981-04-03

Publications (1)

Publication Number Publication Date
EP0070857A1 true EP0070857A1 (fr) 1983-02-09

Family

ID=20343082

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19820900410 Withdrawn EP0070857A1 (fr) 1981-02-09 1982-02-09 Rotor entraine par un fluide

Country Status (3)

Country Link
EP (1) EP0070857A1 (fr)
SE (1) SE8100876L (fr)
WO (1) WO1982002747A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE58903163D1 (de) * 1988-10-03 1993-02-11 Josef Moser Windgetriebener rotor.
AU7320591A (en) * 1990-08-16 1992-03-17 Anders Lundquist Fluid-powered turbine with built-in floating elements and current direction intensifiers
GB9302648D0 (en) * 1993-02-10 1993-03-24 Farrar Austin P Wind powered turbine
RU2253038C2 (ru) * 2003-06-06 2005-05-27 Дальневосточный государственный технический университет Ветродвигатель
GB2446467B (en) * 2007-02-12 2012-03-07 Jonathan Fredrick Muller Vertical multivane wind turbine
CZ303743B6 (cs) * 2011-08-17 2013-04-17 Aerodynamic Wind Machines S.R.O. Vetrná turbína se svislou osou otácení

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK142153B (da) * 1975-01-20 1980-09-08 Boerge Christian Moennike Vind- eller vandmotor med lodret akse.
US4061926A (en) * 1976-03-24 1977-12-06 Peed Paul V Wind driven electrical generator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8202747A1 *

Also Published As

Publication number Publication date
SE8100876L (sv) 1982-08-10
WO1982002747A1 (fr) 1982-08-19

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): BE FR

STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19830418