GB2083564A - An Improved Wind Energy Convertor - Google Patents

An Improved Wind Energy Convertor Download PDF

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Publication number
GB2083564A
GB2083564A GB8127180A GB8127180A GB2083564A GB 2083564 A GB2083564 A GB 2083564A GB 8127180 A GB8127180 A GB 8127180A GB 8127180 A GB8127180 A GB 8127180A GB 2083564 A GB2083564 A GB 2083564A
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GB
United Kingdom
Prior art keywords
column
wind
blades
turbine
wind energy
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
GB8127180A
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GB2083564B (en
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to GB8127180A priority Critical patent/GB2083564B/en
Priority to NL8201043A priority patent/NL8201043A/en
Priority to US06/357,867 priority patent/US4414477A/en
Priority to AU81567/82A priority patent/AU544084B2/en
Priority to DE19823209769 priority patent/DE3209769A1/en
Publication of GB2083564A publication Critical patent/GB2083564A/en
Application granted granted Critical
Publication of GB2083564B publication Critical patent/GB2083564B/en
Expired legal-status Critical Current

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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
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/04—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  having stationary wind-guiding means, e.g. with shrouds or channels
    • F03D3/0427—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  having stationary wind-guiding means, e.g. with shrouds or channels with converging inlets, i.e. the guiding means intercepting an area greater than the effective rotor area
    • 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
    • F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
    • F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
    • 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
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/20—Rotors
    • F05B2240/21—Rotors for wind turbines
    • F05B2240/211—Rotors for wind turbines with vertical axis
    • F05B2240/215—Rotors for wind turbines with vertical axis of the panemone or "vehicle ventilator" type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2250/00—Geometry
    • F05B2250/20—Geometry three-dimensional
    • F05B2250/25—Geometry three-dimensional helical
    • 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
    • Y02E10/728—Onshore wind turbines
    • 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

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  • 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)
  • Power Engineering (AREA)
  • Wind Motors (AREA)

Abstract

The apparatus comprises an upstanding column 1, a fan-like turbine (7 Fig. 2, not shown) which is rotatably mounted on the column and which comprises circumferentially spaced, radially extending blades (8) and secured to the outer edge of the fan, a turbine 9 which comprises circumferentially spaced blades 10 extending lengthwise with respect to the column. An annular body 14 is supported by the column 1 and has circumferentially spaced blades 16 depending therefrom to define, between adjacent blades, venturi through which wind is directed on to the turbine blades 10. Immediately below the turbine (7) the column has circumferentially spaced, helically extending fins 4 defining passages 5 to cause wind to flow upwardly within the passages to drive the turbine (7). The arrangement ensures that both horizontal and vertical components of energy of the wind are used. <IMAGE>

Description

SPECIFICATION An Improved Wind Energy Convertor This invention relates to apparatus for converting the energy of the wind into mechanical energy for use in the generation of electricity or other source of power and, for convenience, such apparatus will hereinafter be referred to by the generic expression "wind energy convertor".
It is an object of the present invention to provide an improved wind energy convertor which will convert into mechanical energy the energy of a wind blowing in substantially any direction, which does not have to be "feathered" or otherwise adjusted in the event of winds of gate force or above, and which is so stabilised that it will continue to operate satisfactorily in winds of gale force with substantially no risk of being blown over or otherwise damaged.
According to the invention the improved wind energy convertor comprises an upstanding column; fan which is supported on the upper end of the column in such a way that the fan is freely rotatable about the axis of the column and which comprises a plurality of circumferentially spaced, radially extending blades; and, supported by, and freely rotatable about the axis of, the column, a substantially circular turbine which surrounds and is radially spaced from an uppermost part of the column and which comprises a plurality of circumferentially spaced blades extending lengthwise with respect to the column, the arrangement being such that wind blowing against the blades of the turbine will drive the turbine rotatably about the axis of the column to cause wind to be directed upwardly within the turbine to drive the fan rotatably about the axis of the column in the same rotational direction as the turbine, thereby converting the energy of the wind into rotational mechanical energy.
With a view to reducing the inherent resistance of the fan to rotation about the axis of the column and thereby increasing the velocity of wind flowing through the fan, preferably the wind energy convertor includes an annular body which is supported by the column and which is co-axial with and is positioned adjacent to the outer circumferential edge of the fan, the upper surface of the annular body being above the fan and being so shaped as to cause the velocity of wind that blows against this surface to increase as it passes over the surface, thereby creating a reduction in air pressure in the circular space bounded by the annular body. Preferably, the upper surface of the annular body is of such a shape as to encourage laminar flow of the wind over its surface.In a preferred embodiment, the angle of inclination of the upper surface to the axis of the column increases smoothly in an upward direction. The increase in velocity of wind flowing upwardly through the fan arising from the shape of the upper surface of the annular body creates a reduction in air pressure in the annular space between the column and the surrounding turbine, with the result that the inherent resistance of the turbine to rotation about the axis of the column is also reduced.
Preferably, over an upper part pf its length imníediately below the fan, the upstanding column has at least two circumferentially spaced, helically extending fins delining between them at least two helically extending passages, the depth of each fin, and hence the depth of each passage, increasing smoothly and the pitch of the radially outer edge of the each fin decreasing smoothly from the lower ends of the fins to the upper ends of the fins.
The circumferentially spaced, helically extending fins on the upper part of the column effectively cause wind flowing within the helically extending passages to form a vortex. Since the column will be positioned within the "eye" of the vortex, the column is, in effect, self-stabilising and is therefore able to convert into mechanical energy, the energy of winds of gale force, thereby taking advantage of the fact that the energy of the wind increases with the cabe of its velocity.
Preferably, the depth of each helically extending fin increases hyperbolically. Preferably, also, the uppermost ends of tte fins are so shaped, and are so positioned with respect to the radially extending blades of thefan, as to act asstatorblades.
Preferably, to accelerate a larger volume of wind between the blades of the turbine and thereby increase still further the amount of wind energy available for conversion, the wind energy convertor further includes, radially outwardly of and surrounding the turbine, a plurality of circumferentially spaced blades which extend 1engthwise with respect to and are supported by the column and which define, between adjacent blades, a plurality of venturi through which wind is directed on to the blades of the turbine, the surfaces of the venturi blades being so shaped as to direct the wind on to the blades of the turbine and, at the same time, to shield from the wind the on-coming blades of the turbine, thereby substantially reducing any drag on the turbine and enabling the turbine to rotate such that its peripheral velocity preferably does not exceed twice the linear velocity of the wind.Preferably, the venturi blades extend downwardly from the underside of the annular body and are secured between the annular body and a second annular body coaxial with and spaced below the first annular body. The radially outer edges of the venturi blades may extend substantially vertically but, preferably, they are inclined radially outwardly in a direction towards the upper end of the convertor.
The fan and the turbine may be independently freely rotatable about the axis of the column but, preferably, the fan and the turbine are rigidly secured together so that both will rotate at the same speed.
The upper part of the column carrying the helical fins and supporting the annular body and the venturi blades may be separately formed with respect to, and may be freely rotatable or rotatably driven about the axis of, the remainder of the column so that, for winds of very high speeds, e.g. above 100mph, the annular body and the venturi blades can be caused to rotate in the same rotational direction about the axis of the column as that of the turbine so that, at such high wind speeds, the difference in speeds between the turbine and the venturi blades is maintained substantially constant.
The electrical generators and/or other ancillary equipment associated with the generation of electricity or other source of power are preferably located in a housing at the foot of the column, the column preferably passing centrally through the housing. If desired, the outer wall of the housing may be of approximately parabolic shape to assist in directing a vertical component of the wind upwardly of the column.
The improved wind energy convertor of the present invention ensures that both the horizontal and vertical components of the energy of the wind are converted into mechanical energy without inhibiting to any great extent the natural movement of the wind. Furthermore, the plurality of radially extending blades of the fan and the plurality of longitudinally extending blades of the turbine provide the important advantage that the improved wind energy convertor is self-starting, irrespective of the direction of the wind.
Additionally, the improved wind energy convertor is pleasing to the eye and can therefore be installed in areas of natural beauty without being any more obtrusive than the conventional sail mill.
The mechanical energy obtained by conversion of the energy of the wind may be used in the generation of electricity by means of any convenient and known method or, if desired, the mechanical energy may be employed to produce power to split water (an abundant and free electrolyte) into the gases hydrogen and oxygen, which can be stored in a readily available form, the hydrogen for use as a non-polluted fuel and the oxygen as a useful or saleable commodity.
Hydrogen can be used to run existing generators to produce electricity with no lead or carbon pollution from the exhaust; it can also be used to power certain forms of apparatus, e.g.
cookers, boilers, furnaces and oxy-hydrogen welding apparatus; Additionally, hydrogen and oxygen can feed fuel cells which produce electricity directly without any moving parts.
Accordingly, the invention also includes, in combination, a wind energy convertor operatively coupled to apparatus for splitting water into hydrogen and oxygen, and means for storage of the oxygen and hydrogen produced.
The wind energy convertor used in this combination is preferably the improved wind energy convertor as hereinbefore described.
The invention will be further illustrated by a description, by way of example, of a preferred wind energy convertor with reference to the accompanying drawings, in which: Figure 1 is a side view of the wind energy convertor, shown partly in elevation and partly in section, drawn on a reduced scale, and Figure 2 is a plan view of the wind energy convertor shown in Figure 1.
Referring to the drawings, the preferred wind energy convertor comprises a rigid vertical column 1 which consists of a lower part 2 mounted on a foundation 30 and a separately formed upper part 3 of circular cross-section which is so mounted on the lower part that the upper part is free to rotate about the vertical axis of the column. The upper part 3 carries four helically extending fins 4, adjacent fins defining between them helically extending passages 5.
The depth of each fin 4, and hence of each passage 5, increases smoothly from a minimum value at the lower end of the upper part 3 to a maximum value at its upper end; the pitch of the fins at their radially outer edges decreases smoothly in a direction towards the upper end of the column 1.
Freely rotatably mounted on, and about the vertical axis of, the upper part 3 of the column 1, is a fan 7 comprising a plurality of circumferentially spaced, radially extending blades 8. Rigidly secured to and depending downwardly from the outer circumferential edge of the fan 7 is a turbine 9 comprising a plurality of circumferencially spaced blades 10 extending lengthwise with respect to the column.
Separately formed with respect to the fan 7 and turbine 9 and surrounding the fan and turbine are two annular bodies 14 and 1 5 which are spaced lengthwise of and are rigidly secured to the upper part 3 of the column 1 and which are - interconnected by a plurality of circumferentially spaced blades 1 6 lying in substantially vertical radial planes. The upper surface 1 7 of the annular body 14 is positioned above the fan 7 and is so shaped as to cause the velocity of wind that blows against this surface to increase as it passes over the surface, thereby creating a reduction in air pressure in the circular space 18 above the fan bounded by the annular body.The vertical blades 1 6 define, between adjacent blades, a plurality of venturi 1 9 through which wind is directed on to the blades 10 of the turbine 9. The surfaces of the venturi blades 1 6 are so shaped as to direct the wind on to the blades 10 of the turbine and, at the same time, to shield from the wind the on-coming blades of the turbine. The undersurface 20 of the annular body 14 and the upper surface 2 1 of the annular body 1 5 are also so shaped as to assist in directing and accelerating wind through the venturi 19 on to the blades 10 of the turbine 9.
The uppermost end of the fins 4 are so shaped, and are so positioned with respect to the radially extending blades 8 of the horizontal fans 7, as to act as stator blades.
At the foot of the column 1, the lower part 2 passes centrally through a housing 25 in which, are accommodated the electrical generators and other equipment, generally indicated at 26, associated with the splitting of water into the gases hydrogen and oxygen, hydrogen being stored in a tank 27 and oxygen being stored in a tank 28 so that both gases are stored, at either high or lower pressure, in a readily available form.
Wind blowing against the column 1 will be directed upwardly within the helically extending passages 5 to drive the horizontal fan 7, and wind blowing against the blades 10 of the turbine 9 will drive the turbine, rotatably about the vertical axis of the column in an anti-clockwise direction.
Since the velocity of wind blowing against the uppermost surface 17 of the annular body 14 is caused to increase as it passes over the surface, a reduction in air pressure is created in the circular space 1 8 above the fan 7 and consequently the velocity of wind flowing up the passages 5 win increase. The increase in velocity of wind flowing up the helical passages 5 creates a reduction in air pressure in the annular space between the helically extending fins 4 and the turbine 9, with the result that the inherent resistance of the turbine to rotation about the vertical axis of the column 1 is also reduced.The amount of wind energy available for conversion is further increased by the venturi 1 9 because wind flowing through these openings is accelerated and directed on to the blades 10 of the turbine 9, in such a way as to assist in driving the turbine in an anti-clockwise direction, the blades 1 6 defining the venturi being so shaped as to shield from the wind the on-coming blades 10 of the turbine, thereby substantially reducing any drag on the turbine and enabling the turbine to rotate at substantially the same linear velocity as that of the wind.
In the event that the velocity of the wind exceeds a predetermined high value, say 100 mph, the upper part 3 of the column 1, on which are carried the annular bodies 14 and 1 5 and the blades 1 6 defining the venturi 19, is also caused to rotate in an anti-clockwise direction at such a speed that the speed of the turbine 9 relative to that of upper part 3 is substantially constant.
As illustrated diagramatically in Figure 1, the mechanical energy of the wind energy convertor can be used to power conventional equipment 26 for splitting water into the gases hydrogen and oxygen, the hydrogen and oxygen, respectively, being stored in tanks 27 and 28, thereby providing a source of power in a readily available form at any time, irrespective of the strength of the wind. Alternatively, the mechanical energy provided by the wind energy connector can be used in the generation of electricity.

Claims (17)

Claims
1. A-wind energy convertor comprising an upstanding column; a fan which is supported on the upper end of the column in.such a way that the fan is freely rotatable about the axis of the column and which comprises a plurality of circumferentially spaced radially extending blades; and, supported by, and freely rotatable about the axis of, the column, a substantially circular turbine which surrounds and is radially spaced from an uppermost part of the column and which comprises a plurality of circumferentially spaced blades extending lengthwise with respect to the column, the arrangement being such that wind blowing against the blades of the turbine will drive the turbine rotatably about the axis of the column to cause wind to be directed upwardly within the turbine to drive the fan rotatably about the axis of the column in the same rotational direction as the turbine, thereby converting the energy of the wind into rotational mechanical energy.
2. A wind energy convertor as claimed in Claim 1, wherein an annular body is supported by the column and is coaxial with and is positioned adjacent to the outer circumferential edge of the fan, the upper surface of the annular body being above the fan and being so shaped as to cause the velocity of wind that blows against the surface to increase as it passes over the surface, thereby creating a reduction in air pressure in the circular space bounded by the annular body and so effecting an increase in velocity of wind flowing upwardly through the fan.
3. A wind energy convertor as claimed in Claim 2, wherein the upper surface of the annular body is of such a shape as to encourage laminar flow of the wind over its surface.
4. A wind energy convertor as claimed in Claim 3, wherein the angle of inclination of the upper surface of the annular body to the axis of the column increases smoothly in an upward direction.
5. A wind energy convertor as claimed in any one of the preceding Claims, wherein, over an upper part of its length immediately below the fan, the upstanding column has at least two circumferentially spaced, helically extending fins defining between them at least two helically extending passages, the depth of each fin, and hence of each passage, increasing smoothly and the pitch of the radially outer edge of each fin decreasing smoothly from the lower ends of the fins to the upper ends of the fins.
6. A wind energy convertor as claimed in Claim 5, wherein the depth of each helically extending fin increases hyperbolically.
7. A wind energy convertor as claimed in Claim 5 or 6, wherein the uppermost ends of the fins are so shaped, and are so positioned with respect to the radially extending blades of the fan, as to act as stator blades.
8. A wind energy convertor as claimed in any one of the preceding Claims, wherein a plurality of circumferentially spaced blades surround and are positioned radially outwardly of the turbine, which blades extend lengthwise with respect to and are supported by the column and define, between adjacent blades, a plurality of venturi through which wind is directed on to the blades of the turbine, the surfaces of the venturi blades being so shaped as to direct the wind on to the blades of the turbine and, at the same time, to shield from the wind the on-coming blades of the turbine.
9. A wind energy convertor as claimed in Claim 8, wherein the venturi blades extend downwardly from the underside of the annular body and are secured between the annular body and a second annular body coaxial with and spaced below the first annular body.
10. A wind energy convertor as claimed in Claim 9, wherein the undersurface of the first annular body and the upper surface of the second annular body are so shaped as to assist in directing and accelerating wind through the venturi on to the blades of the turbine.
11. A wind energy convertor as claimed in any one of Claims 8 to 10, wherein the radially outer edges of the venturi blades are inclined radially outwardly in a direction towards the upper end of the convertor.
12. A wind energy convertor as claimed in any one of the preceding Claims, wherein the fan and the turbine are rigidly secured together so that both will rotate at the same speed.
13. A wind energy convertor as claimed in any one of the preceding Claims, wherein the upper part of the column is separately formed with respect to, and is freely rotatable or rotatably driven about the axis of, the remainder of the column.
14. A wind energy convertor as claimed in any one of the preceding Claims, wherein electrical generators and/or other ancillary equipment associated with the generation of electricity or other source of power are located in a housing at the foot of the column.
1 5. A wind energy convertor as claimed in Claim 14, wherein the outer wall of the housing is of approximately parabolic shape to assist in directing a vertical component of the wind upwardly of the column.
1 6. In combination, a wind energy convertor operatively coupled to apparatus for splitting water into hydrogen and oxygen, and means for storage of the oxygen and hydrogen produced.
17. In combination, a wind energy convertor as claimed in any one of Claims 1 to 1 5, operatively coupled to apparatus for splitting water into hydrogen and oxygen, and means for storage of the oxygen and hydrogen produced.
1 8. A wind energy convertor substantially as hereinbefore described with reference and as shown in the accompanying drawings.
GB8127180A 1980-09-09 1981-09-09 An improved wind energy converter Expired GB2083564B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB8127180A GB2083564B (en) 1980-09-09 1981-09-09 An improved wind energy converter
NL8201043A NL8201043A (en) 1981-09-09 1982-03-12 WIND ENERGY CONVERTER.
US06/357,867 US4414477A (en) 1981-09-09 1982-03-15 Wind energy convertor
AU81567/82A AU544084B2 (en) 1981-09-09 1982-03-16 An improved wind generator convertor
DE19823209769 DE3209769A1 (en) 1981-09-09 1982-03-17 Wind energy conversion device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8029017 1980-09-09
GB8127180A GB2083564B (en) 1980-09-09 1981-09-09 An improved wind energy converter

Publications (2)

Publication Number Publication Date
GB2083564A true GB2083564A (en) 1982-03-24
GB2083564B GB2083564B (en) 1984-05-02

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GB8127180A Expired GB2083564B (en) 1980-09-09 1981-09-09 An improved wind energy converter

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2116640A (en) * 1982-03-15 1983-09-28 Mewburn Crook Anthony James Se Vertical axis wind turbine with feathering vanes
GB2117453A (en) * 1982-03-22 1983-10-12 Mewburn Crock Anthony James Se Vertical axis wind turbine having at least two turbine groups
EP0206750A1 (en) * 1985-06-17 1986-12-30 BICC Public Limited Company An improved wind energy convertor
GB2176850A (en) * 1985-06-17 1987-01-07 Bicc Plc An improved wind energy convertor
GB2185289A (en) * 1986-01-13 1987-07-15 Mewburn Crook Co Ltd Wind energy convertor
GB2190966A (en) * 1986-05-22 1987-12-02 Mewburn Crook Co Ltd Wind energy convertor
US4857753A (en) * 1986-10-04 1989-08-15 Mewburn-Crook Company Limited Wind energy convertor
GB2260372A (en) * 1992-03-20 1993-04-14 Pak Wing Wong Wind turbine including alternative power means
GB2269859A (en) * 1992-08-20 1994-02-23 Clive Murray Coker Vertical axis wind turbine.
GB2293414A (en) * 1994-09-22 1996-03-27 Lai Yu Ming Wind-driven ventilating fan
GB2353825A (en) * 1999-09-01 2001-03-07 David Lovett Ewbank Teal Wind turbine tower having rotatable shroud/fairing
WO2003058061A1 (en) * 2002-01-10 2003-07-17 J Bertony Pty Limited A vertical axis turbine
CN112097169A (en) * 2020-09-29 2020-12-18 湖南和平光电科技有限公司 Plate-type laminated heat-conduction heat-dissipation LED street lamp

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2116640A (en) * 1982-03-15 1983-09-28 Mewburn Crook Anthony James Se Vertical axis wind turbine with feathering vanes
GB2117453A (en) * 1982-03-22 1983-10-12 Mewburn Crock Anthony James Se Vertical axis wind turbine having at least two turbine groups
EP0206750A1 (en) * 1985-06-17 1986-12-30 BICC Public Limited Company An improved wind energy convertor
GB2176850A (en) * 1985-06-17 1987-01-07 Bicc Plc An improved wind energy convertor
GB2185289A (en) * 1986-01-13 1987-07-15 Mewburn Crook Co Ltd Wind energy convertor
GB2190966A (en) * 1986-05-22 1987-12-02 Mewburn Crook Co Ltd Wind energy convertor
US4857753A (en) * 1986-10-04 1989-08-15 Mewburn-Crook Company Limited Wind energy convertor
GB2260372A (en) * 1992-03-20 1993-04-14 Pak Wing Wong Wind turbine including alternative power means
GB2269859A (en) * 1992-08-20 1994-02-23 Clive Murray Coker Vertical axis wind turbine.
GB2293414A (en) * 1994-09-22 1996-03-27 Lai Yu Ming Wind-driven ventilating fan
GB2353825A (en) * 1999-09-01 2001-03-07 David Lovett Ewbank Teal Wind turbine tower having rotatable shroud/fairing
WO2003058061A1 (en) * 2002-01-10 2003-07-17 J Bertony Pty Limited A vertical axis turbine
CN112097169A (en) * 2020-09-29 2020-12-18 湖南和平光电科技有限公司 Plate-type laminated heat-conduction heat-dissipation LED street lamp

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Publication number Publication date
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PCNP Patent ceased through non-payment of renewal fee

Effective date: 19950909