Vertical axis sail-type windmill power transfer device
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0258422
(2008-10-26)
|
등록번호 |
US-8157501
(2012-04-17)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
2 |
초록
▼
This invention relates to a vertical axis sail-type windmill power transfer device for efficiently harvesting wind power by increasing the effective surface of interaction with the wind where the sails are formed by a plurality of pairs of blades permanently attached to freely rotating horizontal ro
This invention relates to a vertical axis sail-type windmill power transfer device for efficiently harvesting wind power by increasing the effective surface of interaction with the wind where the sails are formed by a plurality of pairs of blades permanently attached to freely rotating horizontal rods penetrating the vertical output shaft with pivot offset of the center of the weight which causes the blades to self-adjust when impacted by wind so that one blade assumes a driving position while the other—a leeward position. The invention has a modular-type structure which permits for a variety of configurations and allows for photovoltaic cells to be placed on the blades in order to complement the production of wind energy with solar energy.
대표청구항
▼
1. A vertical axis sail-type windmill power transfer device designed to enhance the capacity of transforming multi-directional wind power to the rotational power of an electric generator by increasing the effective surface of interaction with the wind, said device comprising: a rotational vertical o
1. A vertical axis sail-type windmill power transfer device designed to enhance the capacity of transforming multi-directional wind power to the rotational power of an electric generator by increasing the effective surface of interaction with the wind, said device comprising: a rotational vertical output shaft;a plurality of vertically spaced apart freely rotating horizontal rods each penetrating through said vertical output shaft;sails formed by a plurality of pairs of blades, each blade of said pairs of blades being securely mounted on portions of one of said freely rotating horizontal rods on directly opposing sides of said vertical output shaft, with the blades on one side of said vertical output shaft being parallel to one another and normally oriented at 90 degrees with their associated other blades on the other side of said output shaft, whereby said blades are constantly self-adjusting when impacted by wind so that at least one sail formed by blades on one side of said vertical output shaft is always in an optimal driving position, whereas the opposite sail formed by blades on the other side of said vertical output shaft is in a leeward position;wherein each pair of blades utilizes both the force of gravity and the force of wind to harvest the energy of the wind in a highly efficient manner which consequently rotates the vertical output shaft;wherein each blade of each pair of blades has an airfoil shape, with the center of the weight of each blade being offset from its associated horizontal rod, thereby enhancing the self-adjustment feature of said blades so that when they are impacted by wind one blade assumes a driving position with its main surface perpendicular to the wind for maximizing the wind force against it, and its associated opposite blade assumes a leeward position and has a leading airfoil edge parallel to the wind for minimizing the wind force against it;a foundation comprising a bearing block and an electrical generator or other mechanical device utilizing the energy so produced, where said foundation is attached to the rotational vertical output shaft; anda spring-type mechanism individually mounted on a portion of each rod on opposing sides of said output shaft for both securing associated blades in place when they are in their optimal driving position, and for also forcing the wind driven blades of each pair of blades to narrow the angle between their horizontal opposing blades to less than 90 degrees under extreme-wind conditions so that the area of wind reception is reduced in order to protect the blades, as well as the entire structure, from damage. 2. The device as claimed in claim 1, wherein said device is composed of any number of modules of one or two pairs of blades vertically spaced along the vertical output shaft and based in their design and construction on the principles described in this invention. 3. The device as claimed in claim 1, where said device is free standing or is secured from the top by using another bearing block and arms secured to the ground with steel ropes or where arms connect the tops of a multitude of windmills together. 4. The device as claimed in claim 1, wherein said device is used in both open areas and urban/populated areas, whether free-standing or attached to the tops or sides of existing structures, to harvest wind power for industrial, commercial, or residential uses. 5. The device as claimed in claim 1, wherein the blades are equipped with photovoltaic cells to complement the production of wind energy with solar energy. 6. A vertical axis sail-type windmill power transfer device, comprising: a rotational vertical output shaft;a plurality of vertically spaced apart freely rotating horizontally positioned rods each penetrating and thereby having portions on opposing sides of said vertical output shaft;a plurality of pairs of blades;a means for securing each blade of each pair of said plurality of pairs of blades oriented normally at 90 degrees to one another on portions of one of said freely rotating horizontal rods on directly opposing sides of said vertical output shaft, whereby said plurality of pairs of blades form sails on either side of said vertical output shaft, and each blade rotates with its opposing blade on their associated rotating rod;said blades of said plurality of pairs of blades each being adapted to be continuously self-adjusting when impacted by wind for insuring that at least one sail formed by blades on one side of said vertical output shaft is always in an optimal driving position, whereas the opposite sail formed by blades on the other side of said vertical output is in a leeward position, whereby each pair of blades in unison with the other pairs of blades of said plurality of blades are responsive to both gravity and wind forces for rotating said vertical output shaft; anda spring-type mechanism individually mounted on a portion of each rod on opposing sides of said output shaft for both securing associated blades in place when they are in their optimal driving position, and for forcing the wind driven blades of each pair of blades to narrow the angle between their horizontal opposing blades to less than 90 degrees under extreme-wind conditions so that the area of wind reception is reduced in order to protect the blades, as well as the entire structure, from damage. 7. The device of claim 6, wherein the center of the weight of each blade is offset from the associated horizontal rod, thereby enhancing the self-adjustment feature of said blades to provide that for each pair of blades when impacted by wind, one blade thereof rotates with its associated rod to a driving position with its main surface area perpendicular to the wind for maximizing the wind force against it, and its associated opposite blade rotates with the associated rod to a leeward position with its main surface area parallel to the wind. 8. The device of claim 7, wherein each blade of said plurality of pairs of blades has an airfoil shape, whereby blades in a leeward position each have a leading airfoil edge parallel to the wind for minimizing the wind force against it. 9. The device of claim 6, further including: a device operable by rotational force, whereby said vertical output shaft has an end secured to a rotational member of said device, thereby providing rotational energy to said device.
이 특허에 인용된 특허 (2)
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Al-Azzawi, Jasim Seleh, Blinking sail windmill.
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Chio,Chuy Nan, Sail wing type windmill.
이 특허를 인용한 특허 (3)
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Al-Azzawi, Jasim Saleh, Blinking sail windmill with safety control.
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Christy, Frank L.; Keiser, Stephen C.; Archer, David M.; Arter, Rod, Solar tree with optional wind turbine generator.
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Sarkar, Shyam Sundar; Sarkar, Ayush, Vertical axis wind turbine using helical blades with serrated edges.
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