CA2758183A1 - Vertical axis windmill - Google Patents
Vertical axis windmill Download PDFInfo
- Publication number
- CA2758183A1 CA2758183A1 CA 2758183 CA2758183A CA2758183A1 CA 2758183 A1 CA2758183 A1 CA 2758183A1 CA 2758183 CA2758183 CA 2758183 CA 2758183 A CA2758183 A CA 2758183A CA 2758183 A1 CA2758183 A1 CA 2758183A1
- Authority
- CA
- Canada
- Prior art keywords
- louvers
- vertical axis
- wind
- vertical
- axis windmill
- 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.)
- Abandoned
Links
- 239000006260 foam Substances 0.000 claims description 5
- 229920000642 polymer Polymers 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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
- F03D3/062—Rotors characterised by their construction elements
- F03D3/066—Rotors characterised by their construction elements the wind engaging parts being movable relative to the rotor
- F03D3/067—Cyclic movements
-
- 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
- F05B2240/40—Use of a multiplicity of similar components
-
- 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
- F05B2240/50—Bearings
-
- 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
- F05B2250/10—Geometry two-dimensional
- F05B2250/11—Geometry two-dimensional triangular
-
- 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
Abstract
A vertical axis windmill includes a rotating support that rotates about a vertical axis.
A plurality of horizontal members extends horizontally from the rotating support and a plurality of vertical members extend vertically between the horizontal members to form a structure defining a plurality of openings. Sets of pivotally mounted louvers are positioned in each opening of the structure with each set of louvers pivoting about vertical pivot axes between a closed position in which the louvers are overlapping to prevent passage of wind through the opening and an open position in which the louvers are in parallel spaced relation allowing wind to pass through. Each set of louvers has a connecting linkage so that they move in unison to the closed position when moving with wind and move in unison to the open position when moving against wind.
A plurality of horizontal members extends horizontally from the rotating support and a plurality of vertical members extend vertically between the horizontal members to form a structure defining a plurality of openings. Sets of pivotally mounted louvers are positioned in each opening of the structure with each set of louvers pivoting about vertical pivot axes between a closed position in which the louvers are overlapping to prevent passage of wind through the opening and an open position in which the louvers are in parallel spaced relation allowing wind to pass through. Each set of louvers has a connecting linkage so that they move in unison to the closed position when moving with wind and move in unison to the open position when moving against wind.
Description
TITLE
[0001] Vertical Axis Windmill FIELD
[0001] Vertical Axis Windmill FIELD
[0002] There is described a vertical axis windmill.
BACKGROUND
BACKGROUND
[0003] United States Patent 325,025 (Teft) from 1885 and United States Patent 584,986 (Chapman) from 1897 are early examples of vertical axis windmills.
SUMMARY
SUMMARY
[0004] There will now be described a vertical axis windmill that has a novel structure.
According to the present invention there is provided a vertical axis windmill that includes a rotating support that rotates about a vertical axis. A plurality of horizontal members extend horizontally from the rotating support and a plurality of vertical members extend vertically between the horizontal members to form a structure defining a plurality of openings. Sets of pivotally mounted louvers are positioned in each opening of the structure.
Each set of louvers pivot about vertical pivot axes between a closed position in which the louvers are overlapping to prevent passage of wind through the opening and an open position in which the louvers are in parallel spaced relation allowing wind to pass through. Each set of louvers have a connecting linkage so that they move in unison to the closed position when moving with wind and move in unison to the open position when moving against wind.
According to the present invention there is provided a vertical axis windmill that includes a rotating support that rotates about a vertical axis. A plurality of horizontal members extend horizontally from the rotating support and a plurality of vertical members extend vertically between the horizontal members to form a structure defining a plurality of openings. Sets of pivotally mounted louvers are positioned in each opening of the structure.
Each set of louvers pivot about vertical pivot axes between a closed position in which the louvers are overlapping to prevent passage of wind through the opening and an open position in which the louvers are in parallel spaced relation allowing wind to pass through. Each set of louvers have a connecting linkage so that they move in unison to the closed position when moving with wind and move in unison to the open position when moving against wind.
[0005] Although vertical axis windmill is effective with horizontal members and vertical members of any shape, better results are obtained when both the horizontal members and the vertical members have aerodynamic wing shaping to help channel wind toward the openings when the louvers are in the closed position and reduce wind resistance as wind passes through the openings when the louvers are in the open position.
[0006] Various types of materials may be used to manufacture horizontal members and vertical members, however better results are obtained with the use of foam filled polymer plastic shells which are lightweight.
[0007] Vertical axis windmill may be of any shape, however the shape is preferably a generally triangular structure with peripheral edges that are converging from a base inwardly and upwardly. The triangular shape provides a stable structure for the windmill.
[0008] A generator may be positioned at the base of the structure of the rotating support to capture kinetic energy generated by rotation of the rotating support. The generator allows energy created by the rotation of the rotating support to be stored and used later on or in other locations.
[0009] Bearings may be used to facilitate rotation of the rotating support are magnetic bearing sets made of two magnets that repel each other. The use of magnetic bearing sets reduces the amount of friction created during rotation of the rotation support.
[0010] A fixed vertical support may be used to maintain vertical axis windmill in a vertical orientation. Supporting cables are used to support the fixed vertical support.
BRIEF DESCRIPTION OF THE DRAWINGS
BRIEF DESCRIPTION OF THE DRAWINGS
[0011] These and other features will become more apparent from the following description in which reference is made to the appended drawings, the drawings are for the purpose of illustration only and are not intended to be in any way limiting, wherein:
[0012] FIG. 1 is a front elevation view of a vertical axis windmill.
[0013] FIG. 2 is a detailed front elevation view of one of the plurality of openings in the vertical axis windmill shown in FIG. 1, with louvers in an open position to allow wind to pass through.
[0014] FIG. 3 is a detailed top plan view, in section, of one of the plurality of openings in the vertical axis windmill shown in FIG. 1, with louvers in a closed position to capture wind.
[0015] FIG. 4 is a detailed section view of one of the horizontal members showing aerodynamic wing shaping.
[0016] FIG. 5 is a detailed side elevation view of magnetic bearings used on the vertical axis windmill shown in FIG. 1.
[0017] FIG. 6 is a top plan view of the vertical axis windmill shown in FIG.
1.
1.
[0018] FIG. 7 is a side elevation view, in section, of an arm of the vertical axis windmill shown in FIG.!.
[0019] FIG. 8 is a front perspective view, partially in section, of one of the plurality of openings in the vertical axis windmill shown in FIG. 1, with louvers in the closed position to prevent wind from passing through.
DETAILED DESCRIPTION
DETAILED DESCRIPTION
[0020] A vertical axis windmill generally identified by reference numeral 10, will now be described with reference to FIG. 1 through 8.
Structure and Relationship of Parts:
Structure and Relationship of Parts:
[0021] Referring to FIG. 1, a vertical axis windmill 10 has a rotating support 12 that rotates about a vertical axis 14. In the embodiment shown, rotating support 12 is connected to a fixed vertical support 11 which is maintained in a vertical orientation by supporting cables 16. Referring to FIG. 6, a plurality of arms 13 extend outward from each rotating support 12.
In the embodiment shown, four arms 13 are utilized, which keep windmill 10 rotating in the presence of wind. It will be understood that different numbers of arms may be utilized. The number of arms 13 may be different at the top and bottom of windmill 10.
Reducing the number of arms 13 at the bottom of windmill 10 allows for weight reduction and less resistance. Adjacent arms 13 are connected to each other by horizontal cables 17 which help to maintain the shape of vertical axis windmill 10 in wind and provide increased stability. In this configuration, arms 13 support each other, as pressure upon one arm is transmitted via cables 17 to the other arms 13. Referring to FIG. 1, a plurality of horizontal members 18 extend horizontally from rotating support 12 and a plurality of vertical members 20 extend vertically between horizontal members 18. Although beneficial results have been obtained by having a series of vertical members 20 along the length of horizontal members 18, it would remain workable with vertical members 20 positioned only at the remote ends.
The longer the span, the more advisable it is to provide multiple vertical members 20.
Referring to FIG. 7, cables 15 run between horizontal members 18 and help maintain positioning of horizontal members 18. Cables 15 pass through horizontal members 18, but cable 15 is fixed to each horizontal members 18 to provide support. Referring to FIG. 2, horizontal members 18 and vertical members 20 form a structure defining a plurality of box shaped openings 22. Sets of pivotally mounted louvers 24 are positioned in each opening 22 of the structure. Louvers 24 can be made from a strong and yet light materials such as plastic or carbon fibre. Each set of louvers 24 pivots about a vertical pivot axis 26 between a closed position, shown in FIG. 8, in which the louvers 24 are overlapping to prevent passage of wind through the opening 22 and an open position, shown in FIG. 2, in which the louvers 24 are in parallel spaced relation allowing wind to pass through. Referring to FIG. 8, when in the closed position, openings 22 form a closed box. When louvers 24 are closed, air is captured in the closed box and causes vertical axis windmill 10 to rotate. Referring to FIG. 8, cables 15 run through louvers 24 at the vertical pivot axis 26. Cables 15 act as a hinge pin about which louvers 24 pivot. In order to improve the pivotal action, a bushing can be inserted into the passage through the louvers 24, so that louvers 24 pivot freely about cable 15 with little friction. In addition, bearings can be placed to reduce friction as louvers 24 move about cable 15 in response to wind. At one end a cables 15 is used to act as stop for the last louver 24 to create a closed box when louvers 24 are in the closed position. It will be understood that vertical pivot axis 26 must be positioned along one edge of each of louvers 24.. As shown in FIG. 8, cables 15 run through louvers 24 at an edge of the louvers 24 and serve as pivot axis 26. Referring to FIG. 2, each set of louvers 24 has a connecting linkage 28 so that they move in unison to the closed position illustrated in FIG. 3 when moving with wind and move in unison to the open position illustrated in FIG. 2 when moving against wind. Openings 22 may be of any size and accommodate louvers 24 of any size. As an example, openings 22 may be large enough to contain a plurality of louvers 24 which measure four feet wide and twenty feet long. When large louvers 24 are used, several linkages 28 may be used to move louvers 24 in unison. It will be understood that movement between an open position and a closed position is a movement over a range of roughly 90 degrees.
In the embodiment shown, four arms 13 are utilized, which keep windmill 10 rotating in the presence of wind. It will be understood that different numbers of arms may be utilized. The number of arms 13 may be different at the top and bottom of windmill 10.
Reducing the number of arms 13 at the bottom of windmill 10 allows for weight reduction and less resistance. Adjacent arms 13 are connected to each other by horizontal cables 17 which help to maintain the shape of vertical axis windmill 10 in wind and provide increased stability. In this configuration, arms 13 support each other, as pressure upon one arm is transmitted via cables 17 to the other arms 13. Referring to FIG. 1, a plurality of horizontal members 18 extend horizontally from rotating support 12 and a plurality of vertical members 20 extend vertically between horizontal members 18. Although beneficial results have been obtained by having a series of vertical members 20 along the length of horizontal members 18, it would remain workable with vertical members 20 positioned only at the remote ends.
The longer the span, the more advisable it is to provide multiple vertical members 20.
Referring to FIG. 7, cables 15 run between horizontal members 18 and help maintain positioning of horizontal members 18. Cables 15 pass through horizontal members 18, but cable 15 is fixed to each horizontal members 18 to provide support. Referring to FIG. 2, horizontal members 18 and vertical members 20 form a structure defining a plurality of box shaped openings 22. Sets of pivotally mounted louvers 24 are positioned in each opening 22 of the structure. Louvers 24 can be made from a strong and yet light materials such as plastic or carbon fibre. Each set of louvers 24 pivots about a vertical pivot axis 26 between a closed position, shown in FIG. 8, in which the louvers 24 are overlapping to prevent passage of wind through the opening 22 and an open position, shown in FIG. 2, in which the louvers 24 are in parallel spaced relation allowing wind to pass through. Referring to FIG. 8, when in the closed position, openings 22 form a closed box. When louvers 24 are closed, air is captured in the closed box and causes vertical axis windmill 10 to rotate. Referring to FIG. 8, cables 15 run through louvers 24 at the vertical pivot axis 26. Cables 15 act as a hinge pin about which louvers 24 pivot. In order to improve the pivotal action, a bushing can be inserted into the passage through the louvers 24, so that louvers 24 pivot freely about cable 15 with little friction. In addition, bearings can be placed to reduce friction as louvers 24 move about cable 15 in response to wind. At one end a cables 15 is used to act as stop for the last louver 24 to create a closed box when louvers 24 are in the closed position. It will be understood that vertical pivot axis 26 must be positioned along one edge of each of louvers 24.. As shown in FIG. 8, cables 15 run through louvers 24 at an edge of the louvers 24 and serve as pivot axis 26. Referring to FIG. 2, each set of louvers 24 has a connecting linkage 28 so that they move in unison to the closed position illustrated in FIG. 3 when moving with wind and move in unison to the open position illustrated in FIG. 2 when moving against wind. Openings 22 may be of any size and accommodate louvers 24 of any size. As an example, openings 22 may be large enough to contain a plurality of louvers 24 which measure four feet wide and twenty feet long. When large louvers 24 are used, several linkages 28 may be used to move louvers 24 in unison. It will be understood that movement between an open position and a closed position is a movement over a range of roughly 90 degrees.
[0022] Referring to FIG. 4, horizontal members 18 and vertical members 20 preferably have aerodynamic wing shaping. Referring to FIG. 3, aerodynamic wing shape channels wind toward the openings 22 in the closed position and, referring to FIG. 2, reduces wind resistance as wind passes through the openings 22 in the open position. It will be understood, however, that different shaped horizontal members 18 and vertical members 20 may be utilized. Referring to FIG. 4, the horizontal members 18 and vertical members 20 may be made of any material, however best results are seen when horizontal members 18 and vertical members 20 are made of a light material such as foam filled polymer plastic shells 21 with a reinforcing tube 23 extending along its length.
[0023] Referring to FIG. 1, vertical axis windmill 10 may be of any general shape, however it is preferable that it be generally triangular with peripheral edges 30 that are converging from a base 32 inwardly and upwardly. A generator34, may be positioned at the base 32 of the vertical axis windmill 10 of the rotating support 14 to capture kinetic energy generated by rotation of the rotating support 12.
[0024] Referring to FIG. 5, rotation of the rotating support 12 may be facilitated by the use of bearings 36. In particular, the use of a magnetic bearing set may be used. Magnetic bearing sets utilize two magnets 38 and 40 that repel each other and help to reduce the amount of friction in the bearings. It will be understood that a conventional mechanical bearing could be utilized.
Operation:
Operation:
[0025] Referring to FIG. 1, vertical axis windmill 10 is placed in an area where it can be turned by wind power. Fixed vertical support 11 is stabilized by supporting cables 16.
Referring to FIG. 3, as wind contacts louvers 24, they are moved into the closed position to prevent passage of the wind and cause rotation of the rotating support 12, shown in FIG. 1.
Referring to FIG. 2, as the windmill 10 rotates and the wind is channelled toward openings 22, the wind pushes louvers 24 back to the open position which allows the wind to pass through openings 22. This helps to reduce the drag caused by movement of the windmill 10 as louvers 24 contained within horizontal members 18 and vertical members 20 move into the wind. Disk generator 34 is used to capture kinetic energy that is generated by rotation of the rotating support 12. Referring to FIG. 4, the polymer shell 18 with foam filler 21 is extremely light weight. The triangular shape provides a stable structure, which becomes even more so when the weight of the generator is placed at the bottom. The triangular structure also provides room needed to install guide wires 16 to stabilize fixed vertical support 11.
Referring to FIG. 3, as wind contacts louvers 24, they are moved into the closed position to prevent passage of the wind and cause rotation of the rotating support 12, shown in FIG. 1.
Referring to FIG. 2, as the windmill 10 rotates and the wind is channelled toward openings 22, the wind pushes louvers 24 back to the open position which allows the wind to pass through openings 22. This helps to reduce the drag caused by movement of the windmill 10 as louvers 24 contained within horizontal members 18 and vertical members 20 move into the wind. Disk generator 34 is used to capture kinetic energy that is generated by rotation of the rotating support 12. Referring to FIG. 4, the polymer shell 18 with foam filler 21 is extremely light weight. The triangular shape provides a stable structure, which becomes even more so when the weight of the generator is placed at the bottom. The triangular structure also provides room needed to install guide wires 16 to stabilize fixed vertical support 11.
[0026] Advantages [0027] 1. Windwills that utilize large propellers and associated gearing and generators on top of poles, require a substantial supporting structure. In contrast, windmill 10 has the gearing and generators at the bottom and can be made from very light weight and relatively inexpensive materials.
[0028] 2. With the gearing and generators positioned at the bottom, there is improved access for servicing.
[0029] 3. With the lighter weight, windmill 10 is more sensitive to lighter winds that would not move existing propellers.
[0030] 4. Windmill 10 acts like a sail and is very effective at catching a large volume of wind.
[0031] 5. One of the things that provides strength, while maintaining light weight is the use of cables 15. Cables 15 serving more than one purpose, to support vertical members 18 and to serve as a pivot axis for louvers 24, and to serve as a pivotal stop of the louver 24 which is positioned at one end.
[0032] 6. The triangular shape maintains the weight on the bottom and creates a greater stability to the structure.
[0033] 7. For a comparable performance, there is a greatly reduced cost.
[0034] In this patent document, the word "comprising" is used in its non-limiting sense to mean that items following the word are included, but items not specifically mentioned are not excluded. A reference to an element by the indefinite article "a" does not exclude the possibility that more than one of the element is present, unless the context clearly requires that there be one and only one of the elements.
[0035] The scope of the claims should not be limited by the illustrated embodiments set forth as examples, but should be given the broadest interpretation consistent with the description as a whole.
Claims (12)
1. A vertical axis windmill, comprising:
a rotating support that rotates about a vertical axis;
a plurality of horizontal members that extend horizontally from the rotating support;
a plurality of vertical members that extend vertically between the horizontal members to form a structure defining a plurality of openings;
sets of pivotally mounted louvers positioned in each opening of the structure, each set of louvers pivoting about vertical pivot axes between a closed position in which the louvers are overlapping to prevent passage of wind through the opening and an open position in which the louvers are in parallel spaced relation allowing wind to pass through, each set of louvers having a connecting linkage so that they move in unison to the closed position when moving with wind and move in unison to the open position when moving against wind.
a rotating support that rotates about a vertical axis;
a plurality of horizontal members that extend horizontally from the rotating support;
a plurality of vertical members that extend vertically between the horizontal members to form a structure defining a plurality of openings;
sets of pivotally mounted louvers positioned in each opening of the structure, each set of louvers pivoting about vertical pivot axes between a closed position in which the louvers are overlapping to prevent passage of wind through the opening and an open position in which the louvers are in parallel spaced relation allowing wind to pass through, each set of louvers having a connecting linkage so that they move in unison to the closed position when moving with wind and move in unison to the open position when moving against wind.
2. The vertical axis windmill of Claim 1, wherein both the horizontal members and the vertical members have aerodynamic wing shaping to channel wind toward the openings in the closed position and reduce wind resistance as wind passes through the openings in the open position.
3. The vertical axis windmill of Claim 1, wherein both the horizontal members and the vertical members are foam filled polymer plastic shells.
4. The vertical axis windmill of Claim 1, wherein the structure is generally triangular with peripheral edges that are converging from a base inwardly and upwardly.
5. The vertical axis windmill of Claim 4, wherein a generator is positioned at the base of the structure of the rotating support to capture kinetic energy generated by rotation of the rotating support.
6. The vertical axis windmill of Claim 1, wherein bearings used to facilitate the rotation of the rotating support are magnetic bearing sets comprising two magnets that repel each other.
7. The vertical axis windmill of Claim 1, wherein cables which extend vertically between horizontal members, the cables serving as pivot axes for the louvers and providing support to maintain the horizontal members in a horizontal orientation.
8. A vertical axis windmill, comprising:
a fixed vertical support having a vertical axis;
a rotating support that rotates about the vertical axis of the fixed vertical support a plurality of horizontal members that extend horizontally from the rotating support;
a plurality of vertical members that extend vertically between the horizontal members to form a structure defining a plurality of openings, the structure being generally triangular with peripheral edges that are converging from a base inwardly and upwardly;
sets of pivotally mounted louvers positioned in each opening of the structure, each set of louvers pivoting about vertical pivot axes between a closed position in which the louvers are overlapping to prevent passage of wind through the opening and an open position in which the louvers are in parallel spaced relation allowing wind to pass through, each set of louvers having a connecting linkage so that they move in unison to the closed position when moving with wind and move in unison to the open position when moving against wind;
both the horizontal members and the vertical members having aerodynamic wing shaping to channel wind toward the openings in the closed position and reduce wind resistance as wind passes through the openings in the open position; and a generator positioned at the base of the structure of the rotating support to capture kinetic energy generated by rotation of the rotating support.
a fixed vertical support having a vertical axis;
a rotating support that rotates about the vertical axis of the fixed vertical support a plurality of horizontal members that extend horizontally from the rotating support;
a plurality of vertical members that extend vertically between the horizontal members to form a structure defining a plurality of openings, the structure being generally triangular with peripheral edges that are converging from a base inwardly and upwardly;
sets of pivotally mounted louvers positioned in each opening of the structure, each set of louvers pivoting about vertical pivot axes between a closed position in which the louvers are overlapping to prevent passage of wind through the opening and an open position in which the louvers are in parallel spaced relation allowing wind to pass through, each set of louvers having a connecting linkage so that they move in unison to the closed position when moving with wind and move in unison to the open position when moving against wind;
both the horizontal members and the vertical members having aerodynamic wing shaping to channel wind toward the openings in the closed position and reduce wind resistance as wind passes through the openings in the open position; and a generator positioned at the base of the structure of the rotating support to capture kinetic energy generated by rotation of the rotating support.
9. The vertical axis windmill of Claim 8, wherein both the horizontal members and the vertical members are foam filled polymer plastic shells.
10. The vertical axis windmill of Claim 8, wherein bearings used to facilitate the rotation of the rotating support are magnetic bearing sets comprising two magnets that repel each other.
11. The vertical axis windmill of Claim 8, wherein the fixed vertical support is maintained in a vertical orientation by supporting cables.
12. The vertical axis windmill of Claim 8, wherein cables which extend vertically between horizontal members, the cables serving as pivot axes for the louvers and providing support to maintain the horizontal members in a horizontal orientation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2758183 CA2758183A1 (en) | 2011-11-08 | 2011-11-08 | Vertical axis windmill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2758183 CA2758183A1 (en) | 2011-11-08 | 2011-11-08 | Vertical axis windmill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2758183A1 true CA2758183A1 (en) | 2013-05-08 |
Family
ID=48239854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2758183 Abandoned CA2758183A1 (en) | 2011-11-08 | 2011-11-08 | Vertical axis windmill |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2758183A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106401871A (en) * | 2016-10-09 | 2017-02-15 | 董景涌 | Wind gathering type wind power generation device |
| GB2552545A (en) * | 2016-07-29 | 2018-01-31 | Aberystwyth Univ | Turbine and generator set |
-
2011
- 2011-11-08 CA CA 2758183 patent/CA2758183A1/en not_active Abandoned
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2552545A (en) * | 2016-07-29 | 2018-01-31 | Aberystwyth Univ | Turbine and generator set |
| CN106401871A (en) * | 2016-10-09 | 2017-02-15 | 董景涌 | Wind gathering type wind power generation device |
| CN106401871B (en) * | 2016-10-09 | 2019-04-26 | 董景涌 | A kind of wind-gathering wind power generation device |
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Legal Events
| Date | Code | Title | Description |
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| FZDE | Dead |
Effective date: 20141110 |