CA2477595A1 - An auxiliary propeller rotor for horizontal wind turbine generators - Google Patents
An auxiliary propeller rotor for horizontal wind turbine generators Download PDFInfo
- Publication number
- CA2477595A1 CA2477595A1 CA002477595A CA2477595A CA2477595A1 CA 2477595 A1 CA2477595 A1 CA 2477595A1 CA 002477595 A CA002477595 A CA 002477595A CA 2477595 A CA2477595 A CA 2477595A CA 2477595 A1 CA2477595 A1 CA 2477595A1
- Authority
- CA
- Canada
- Prior art keywords
- rotor
- propeller
- wind
- propellers
- auxiliary
- 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
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
- F03D1/00—Wind motors with rotation axis substantially parallel to the air flow entering the rotor
- F03D1/02—Wind motors with rotation axis substantially parallel to the air flow entering the rotor having a plurality of rotors
- F03D1/025—Wind motors with rotation axis substantially parallel to the air flow entering the rotor having a plurality of rotors coaxially arranged
-
- 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
-
- 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
Abstract
1. The Auxiliary Propeller Rotor for Horizontal Wind Turbine Generators, "Booster/ Stabilizer Props" technology applies to up-wind, and downwind turbine generators. The invention consists of adding an auxiliary rotor having two or more propellers on the extended shaft or axle of the turbine, with the main rotor having two or more propellers, having an allocated space between the two rotors.
2. The space between auxiliary rotor and the main rotor on the extended shaft or axle of the wind turbine generator is 12-18 inches/30-45 cm, more or less.
3. The auxiliary propeller rotor and the main propeller rotor are secured on the same shaft or axle of the wind turbine generator and rotate together, from the energy of the wind, either clockwise or anti-clockwise.
4. The extended shaft or axle of the turbine generator is shaped multi-sided, such as hexagonally, to allow easy adjustment of the most advantageous circumferential arrangement between the auxiliary and the main rotor propellers. Essentially, there are 6 settings between the two so that the propellers are not necessarily in line with each other but can be offset so as to achieve maximum power output from the wind energy.
5. The auxiliary rotor with its two or three propeller blades, more or less, synchronized with the main rotor with its two or three propeller blades, more or less, results in significantly greater output, with its lesser blade diameter than the standard one rotor with two or three propeller blades on high tower wind generator turbines.
6. The auxiliary rotor propellers and the main rotor propellers that are on the same extended shaft or axle of the wind turbine generator, permit many variations of the propellers such as each having the same or different length of blades, widths of blades, and number of blades, (3 to 5, more or less). This plurality of propeller blades on two adjoining rotors with one half the blade length has the same power output, more or less, as a standard rotor with two or three blades with twice the diameter on a high tower supporting the wind turbine 7. The logic is that the blade length of propellers on two spaced rotors on the same shaft or axle is doubled, more or less, and is equivalent to one rotor with twice the diameter of the propeller blade. For example, a high output turbine wind generator with a tower height of 50 meters has a one rotor 3 propeller blade diameter of 30 meters, it can be substituted with two propeller rotors each being 15 meters in diameter and the height of the tower can be reduced by one half, to 25 meters more or less.
8. The auxiliary propeller rotor allows a lower tower height resulting in lower costs tower construction, and easier to do repairs when needed. The fabrication cost of the shorter blade propeller is also much less than the longer blade that requires special alloys to withstand the additional stress.
9. The invention of the "Auxiliary Propeller Rotor" has the following objectives:
- to significantly reduce the height of the wind turbine tower, - to increase the effectiveness of capturing the thrust of the wind energy, - to increase greater electrical output at low wind speed, hence lower startup speed, and ideal for low wind velocity sites.
10. The technology to slow down the rotation of the propeller blades of wind turbine generators during high winds are varied. Several high output turbine generators have a feathering mechanism on the single propeller rotor, similar to an airplane propeller rotor, that rotates the blade of the propeller to have a lesser resistance to air.
The old fashioned wind vane which swivels the propellers and turbine obliquely to high winds is still an effective and simple way to decrease the speed of rotation during high winds and is the recommended feature for the "auxiliary rotor" on a wind generator turbine. It is simple, easy to repair, and will not unduly delay electrical output.
2. The space between auxiliary rotor and the main rotor on the extended shaft or axle of the wind turbine generator is 12-18 inches/30-45 cm, more or less.
3. The auxiliary propeller rotor and the main propeller rotor are secured on the same shaft or axle of the wind turbine generator and rotate together, from the energy of the wind, either clockwise or anti-clockwise.
4. The extended shaft or axle of the turbine generator is shaped multi-sided, such as hexagonally, to allow easy adjustment of the most advantageous circumferential arrangement between the auxiliary and the main rotor propellers. Essentially, there are 6 settings between the two so that the propellers are not necessarily in line with each other but can be offset so as to achieve maximum power output from the wind energy.
5. The auxiliary rotor with its two or three propeller blades, more or less, synchronized with the main rotor with its two or three propeller blades, more or less, results in significantly greater output, with its lesser blade diameter than the standard one rotor with two or three propeller blades on high tower wind generator turbines.
6. The auxiliary rotor propellers and the main rotor propellers that are on the same extended shaft or axle of the wind turbine generator, permit many variations of the propellers such as each having the same or different length of blades, widths of blades, and number of blades, (3 to 5, more or less). This plurality of propeller blades on two adjoining rotors with one half the blade length has the same power output, more or less, as a standard rotor with two or three blades with twice the diameter on a high tower supporting the wind turbine 7. The logic is that the blade length of propellers on two spaced rotors on the same shaft or axle is doubled, more or less, and is equivalent to one rotor with twice the diameter of the propeller blade. For example, a high output turbine wind generator with a tower height of 50 meters has a one rotor 3 propeller blade diameter of 30 meters, it can be substituted with two propeller rotors each being 15 meters in diameter and the height of the tower can be reduced by one half, to 25 meters more or less.
8. The auxiliary propeller rotor allows a lower tower height resulting in lower costs tower construction, and easier to do repairs when needed. The fabrication cost of the shorter blade propeller is also much less than the longer blade that requires special alloys to withstand the additional stress.
9. The invention of the "Auxiliary Propeller Rotor" has the following objectives:
- to significantly reduce the height of the wind turbine tower, - to increase the effectiveness of capturing the thrust of the wind energy, - to increase greater electrical output at low wind speed, hence lower startup speed, and ideal for low wind velocity sites.
10. The technology to slow down the rotation of the propeller blades of wind turbine generators during high winds are varied. Several high output turbine generators have a feathering mechanism on the single propeller rotor, similar to an airplane propeller rotor, that rotates the blade of the propeller to have a lesser resistance to air.
The old fashioned wind vane which swivels the propellers and turbine obliquely to high winds is still an effective and simple way to decrease the speed of rotation during high winds and is the recommended feature for the "auxiliary rotor" on a wind generator turbine. It is simple, easy to repair, and will not unduly delay electrical output.
Description
An Auxiliar~peller Rotor for Horizontal Wind Turbine Generators "Booster/Stabilizer Props"
DISCLOSURE
a) Field and Background of the Invention i) Humans have used wind as energy for thousands of years. Ancient Persians have used wind energy to pump water before the birth of Christ. Wind-driven ships explored the world, before the advent of engine power. For hundreds of years, the huge wind mills in Holland provided power to grind the grains and also to drain the seawater when reclaiming the land, and still do, from the sea. The old fashion pioneer wind vane windmills used traditionally in the early 1900's by the farmers and ranchers in the United States and Canada to pump water, are still used today.
ii) The top base of the existing wind turbine generator structure is usually a round plate, which when set on a plate on top of a tower, 40-60-80 feet, permits the easy rotation, plate to plate, of the structure such that the propellers are always perpendicular to the wind movement for maximum power from the wind. Any deviation to the oblique from the perpendicular to the wind reduces the speed of rotation of the propellers and is one method for slowing the rotational speed of the propellers in high winds.
iii) The wind turbine generators on towers are isolated individually or together as a community labeled as a wind farm and these farms are common in California with 4,000 or more turbines providing electricity to cities and local communities. Wind farms are being expanded nationally in European countries, especially Denmark, Germany, Holland, Sweden and England. Canada has great potential and is slowly expanding the use of wind turbine generator to supplement hydro and nuclear power.
iv) Most of the modern turbine generators, as seen in photographs, have one propeller with either 2 blade or 3 blade rotors, and the rotor blade diameter may vary from 10 feet to 12 feet to as much as 60 to 80 feet more or less, on a tower 150 feet, more or less. Some wind turbine generators have one rotor with a multitude of acute angle vanes, (pioneer wind pumpers on farms and ranches) or recent models (Hornet Wind Turbines) with as many as 4 to 6 propeller blades on the same rotor.
Initials 9-~~ Page 7 of 8 v) Most manufacturers of wind turbine generators use the 2 propeller rotor and the 3 propeller rotor as the most efficient, as observed in wind farms in the US and Europe.
vi) However, the Hornet Wind Turbines of the US has demonstrated that a rotor with 4 or 5 blades has a higher torque at lower wind speeds, less variation in rotation, resulting in more constant energy output favorable for generating electricity.
a) Search of Patents I) Reviewing certain wind turbine generators patents filed with the Canadian and with the US Patent office, there is no patent for an auxiliary propeller rotor with the extended main shaft permitting a significant space on the main shaft between the 2 propellers. Certain patents show 2 propellers adjoining each other, with no space on the shaft between them, but rotating counter revolution to each other, one propeller is secured on a main shaft while the other propeller is secured on an outer tube outside of the main shaft and each counter rotating to the other.
II) United States Patent No 6,713,893, Efficient Wind Generator. The wind generator has a first rotor disposed with a first axis of rotation.... and a second rotor disposed with a second axis of rotation different from the first axis of rotation, each rotor providing power to the field rotor of a generator.....electrical energy is generated.
Note: there is no obvious space between the two rotors.
III) Patent CA 2193972. The Multi-Unit Rotor Blade System Integrated Wind Turbine.
The described wind turbine has a set of propeller type wind force collecting rotor turbines composed of an up-wind auxiliary rotor blade turbine being disposed on the front end of the combined bevel-planet gear assembly, and a down-wind main rotor blade turbine. These rotor blades rotate in opposite directions with respect to one another.
IV) Aircraft Propeller System.
A lightweight counter-rotatable propeller system driven by a rotatable shaft...system includes first and second counter-rotatable propellers, each propeller including a plurality of blades mounted on first and second hubs, respectively.
Initials ~~~~ Page 8 of 8
DISCLOSURE
a) Field and Background of the Invention i) Humans have used wind as energy for thousands of years. Ancient Persians have used wind energy to pump water before the birth of Christ. Wind-driven ships explored the world, before the advent of engine power. For hundreds of years, the huge wind mills in Holland provided power to grind the grains and also to drain the seawater when reclaiming the land, and still do, from the sea. The old fashion pioneer wind vane windmills used traditionally in the early 1900's by the farmers and ranchers in the United States and Canada to pump water, are still used today.
ii) The top base of the existing wind turbine generator structure is usually a round plate, which when set on a plate on top of a tower, 40-60-80 feet, permits the easy rotation, plate to plate, of the structure such that the propellers are always perpendicular to the wind movement for maximum power from the wind. Any deviation to the oblique from the perpendicular to the wind reduces the speed of rotation of the propellers and is one method for slowing the rotational speed of the propellers in high winds.
iii) The wind turbine generators on towers are isolated individually or together as a community labeled as a wind farm and these farms are common in California with 4,000 or more turbines providing electricity to cities and local communities. Wind farms are being expanded nationally in European countries, especially Denmark, Germany, Holland, Sweden and England. Canada has great potential and is slowly expanding the use of wind turbine generator to supplement hydro and nuclear power.
iv) Most of the modern turbine generators, as seen in photographs, have one propeller with either 2 blade or 3 blade rotors, and the rotor blade diameter may vary from 10 feet to 12 feet to as much as 60 to 80 feet more or less, on a tower 150 feet, more or less. Some wind turbine generators have one rotor with a multitude of acute angle vanes, (pioneer wind pumpers on farms and ranches) or recent models (Hornet Wind Turbines) with as many as 4 to 6 propeller blades on the same rotor.
Initials 9-~~ Page 7 of 8 v) Most manufacturers of wind turbine generators use the 2 propeller rotor and the 3 propeller rotor as the most efficient, as observed in wind farms in the US and Europe.
vi) However, the Hornet Wind Turbines of the US has demonstrated that a rotor with 4 or 5 blades has a higher torque at lower wind speeds, less variation in rotation, resulting in more constant energy output favorable for generating electricity.
a) Search of Patents I) Reviewing certain wind turbine generators patents filed with the Canadian and with the US Patent office, there is no patent for an auxiliary propeller rotor with the extended main shaft permitting a significant space on the main shaft between the 2 propellers. Certain patents show 2 propellers adjoining each other, with no space on the shaft between them, but rotating counter revolution to each other, one propeller is secured on a main shaft while the other propeller is secured on an outer tube outside of the main shaft and each counter rotating to the other.
II) United States Patent No 6,713,893, Efficient Wind Generator. The wind generator has a first rotor disposed with a first axis of rotation.... and a second rotor disposed with a second axis of rotation different from the first axis of rotation, each rotor providing power to the field rotor of a generator.....electrical energy is generated.
Note: there is no obvious space between the two rotors.
III) Patent CA 2193972. The Multi-Unit Rotor Blade System Integrated Wind Turbine.
The described wind turbine has a set of propeller type wind force collecting rotor turbines composed of an up-wind auxiliary rotor blade turbine being disposed on the front end of the combined bevel-planet gear assembly, and a down-wind main rotor blade turbine. These rotor blades rotate in opposite directions with respect to one another.
IV) Aircraft Propeller System.
A lightweight counter-rotatable propeller system driven by a rotatable shaft...system includes first and second counter-rotatable propellers, each propeller including a plurality of blades mounted on first and second hubs, respectively.
Initials ~~~~ Page 8 of 8
Claims (9)
The Technology of the Invention in which an Exclusive Property or Privilege is Claimed is Defined as Follows:
1. A second rotor with two or more propellers, termed rear-auxiliary or front auxiliary that is installed with a space, in front, or in rear of the main propeller rotor that also has two or more propellers, and together are on the extended (16-24 inch /40-60cm, more or less), shaft, or axle of an up-wind generator turbine is an exclusive property.
2. A space of between (12-18 inches/30-45 cm, more or less) is allocated on the extended shaft or axle of the wind turbine between the auxiliary propeller rotor and the main propeller rotor is an exclusive property.
3. The axis of rotation of the auxiliary propeller rotor and the front propeller rotor that are secured on the shaft or axle of the wind turbine generator, and rotate together either clockwise or counter-clockwise from the wind energy is an exclusive property.
4. The extended part of the shaft or axle of the wind turbine generator can be shaped multi-sided such as hexagonally to allow easy adjustment of the circumferential arrangement between the auxiliary rotor propellers and the main rotor propellers, so that essentially there are 6 settings between the two rotor propellers and instead of being in line with each other they can be offset so as to achieve maximum power output from the flow-through of the wind energy and attain greater energy efficiency is an exclusive property.
5. The auxiliary rotor propellers and the main rotor propellers are on the same extended shaft or axle of the wind turbine generator and permit many variations of the propellers such as each having the same or different length of blades, widths of blades, and number of blades, (3 to 5, more or less), and together achieve a lower start-up speed, more stability in varying winds, and are ideal for low wind speed sites is an exclusive property.
6. This plurality of propeller blades on two adjoining rotors with one half the blade length has the same power output, more or less, as a standard rotor with two or three blades with twice the diameter on a high tower supporting the wind turbine, thus effectively the height of the tower is reduced by one half, more or less is an exclusive property.
7. The auxiliary propeller rotors and the main propeller rotor with an allocated space between the two, is applicable for down-wind turbine generators, and for tidal and stream water generator turbines is an exclusive property.
8. The auxiliary propeller rotor and the main propeller rotor, with an allocated space between the two, each with it's befitting number of blades, is applicable to airplanes with one or two motor driven propeller rotor(s), or with one or two turbo rotor propellers is an exclusive property.
9. The auxiliary propeller rotor and the main propeller rotor, with an allocated space between the two is applicable to water conveyances powered by one or more separate propellers, such as boats and ships is an exclusive property.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002477595A CA2477595A1 (en) | 2004-08-23 | 2004-08-23 | An auxiliary propeller rotor for horizontal wind turbine generators |
| PCT/CA2005/000033 WO2006021074A1 (en) | 2004-08-23 | 2005-01-05 | An auxiliary propeller rotor for horizontal wind turbine generators “ booster/stabilizer props” |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002477595A CA2477595A1 (en) | 2004-08-23 | 2004-08-23 | An auxiliary propeller rotor for horizontal wind turbine generators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2477595A1 true CA2477595A1 (en) | 2006-02-23 |
Family
ID=35874760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002477595A Abandoned CA2477595A1 (en) | 2004-08-23 | 2004-08-23 | An auxiliary propeller rotor for horizontal wind turbine generators |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA2477595A1 (en) |
| WO (1) | WO2006021074A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008119165A1 (en) * | 2007-03-30 | 2008-10-09 | Distributed Thermal Systems Ltd. | Multistage wind turbine with variable blade displacement |
| ES2343447A1 (en) * | 2007-04-26 | 2010-07-30 | M.Torres Olvega Industrial, S.L. | High electricity production wind generator |
| US7985052B2 (en) | 2007-10-18 | 2011-07-26 | Wind Simplicity Inc. | Curved blade for wind turbines |
| US8002526B2 (en) | 2007-04-13 | 2011-08-23 | Wind Simplicity, Inc. | Rotor drum for multiple rotor wind turbine |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431718A (en) * | 2020-11-19 | 2021-03-02 | 太仓联科工业设计有限公司 | High-efficient new forms of energy wind power generation equipment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1637398A (en) * | 1926-01-14 | 1927-08-02 | Syracusa Michael | Airplane construction |
| US1717663A (en) * | 1927-12-07 | 1929-06-18 | Checkley George | Propeller |
| KR960007401B1 (en) * | 1994-06-27 | 1996-05-31 | 신찬 | Multi-unit rotor blade system integrated wind turbine |
| DE10003385A1 (en) * | 2000-01-26 | 2001-08-02 | Aloys Wobben | Wind turbine |
-
2004
- 2004-08-23 CA CA002477595A patent/CA2477595A1/en not_active Abandoned
-
2005
- 2005-01-05 WO PCT/CA2005/000033 patent/WO2006021074A1/en active Application Filing
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008119165A1 (en) * | 2007-03-30 | 2008-10-09 | Distributed Thermal Systems Ltd. | Multistage wind turbine with variable blade displacement |
| US8002526B2 (en) | 2007-04-13 | 2011-08-23 | Wind Simplicity, Inc. | Rotor drum for multiple rotor wind turbine |
| ES2343447A1 (en) * | 2007-04-26 | 2010-07-30 | M.Torres Olvega Industrial, S.L. | High electricity production wind generator |
| US7985052B2 (en) | 2007-10-18 | 2011-07-26 | Wind Simplicity Inc. | Curved blade for wind turbines |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2006021074A1 (en) | 2006-03-02 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |