Horizontal axis wind machine with multiple rotors
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F03D-001/02
F03D-001/06
F03D-015/00
출원번호
US-0479773
(2012-05-24)
등록번호
US-10030628
(2018-07-24)
발명자
/ 주소
Sutz, Richard K.
출원인 / 주소
THUNDERBIRD POWER CORP
인용정보
피인용 횟수 :
0인용 특허 :
17
초록▼
A horizontal-shaft wind machine having improved low wind speed performance and greater overall efficiency consists of multiple rotors, wherein each successive rotor is larger in diameter than the previous rotor moving from the most windward rotor to the most leeward rotor. Each rotor may be coupled
A horizontal-shaft wind machine having improved low wind speed performance and greater overall efficiency consists of multiple rotors, wherein each successive rotor is larger in diameter than the previous rotor moving from the most windward rotor to the most leeward rotor. Each rotor may be coupled to a separate concentric shaft, and all rotors may rotate in the same direction with the output shafts of each rotor coupled via an overrunning clutch to a single shaft, the output of which is used to drive the load. Winglets attached to the leading edge and tip of the rotor sails improve low wind startup torque.
대표청구항▼
1. A wind machine adapted to extract work from the wind comprising: a first rotor shaft having a substantially horizontal axis of rotation;a bearing support capable of aligning the axis of rotation of said first rotor shaft with the wind direction;a first wind machine rotor rotatable about said firs
1. A wind machine adapted to extract work from the wind comprising: a first rotor shaft having a substantially horizontal axis of rotation;a bearing support capable of aligning the axis of rotation of said first rotor shaft with the wind direction;a first wind machine rotor rotatable about said first rotor shaft, said first wind machine rotor comprising a first hub attached to said first rotor shaft and a first plurality of sails attached to said hub, said first plurality of sails extending substantially radially outward substantially equidistant from said hub to form a rotor having an outer diameter;a second wind machine rotor displaced axially downwind from said first wind machine rotor, said second wind machine rotor comprising a second hub and a second plurality of sails attached to said hub extending substantially radially outward substantially equidistant from said hub to form a rotor having an outer diameter, the outer diameter of said second wind machine rotor being larger than the outer diameter of said first wind machine rotor; anda single vertical output shaft coupled to the first rotor shaft for extracting power from said first and second wind machine rotors. 2. The wind machine of claim 1, wherein: said first and second plurality of sails each have a root and a tip, the roots of said second plurality of sails defining an inner diameter of said second wind machine rotor that is equal to the outer diameter of said first wind machine rotor within ½ the average length of the second plurality of sails measured from root to tip. 3. The wind machine of claim 1, further comprising: a second rotor shaft mounted for rotation coaxially with said first rotor shaft, wherein said second wind machine rotor is attached to said second rotor shaft and said second rotor shaft is coupled to said first rotor shaft. 4. The wind machine of claim 3, wherein: said second rotor shaft is coupled to said first rotor shaft via an overrunning clutch. 5. The wind machine of claim 4, wherein; said overrunning clutch comprises a ratchet wheel and pawl. 6. The wind machine of claim 1, further comprising: a third wind machine rotor displaced axially downwind from said second wind machine rotor, said third wind machine rotor comprising a third hub and a plurality of sails attached to said third hub extending substantially radially outward substantially equidistant from said third hub to form a rotor having an outer diameter, the outer diameter of said third wind machine rotor being larger than the outer diameter of said second wind machine rotor, said first, second, and third wind machine rotors rotating in a common rotational direction. 7. The wind machine of claim 6, further comprising: second and third rotor shafts mounted for rotation coaxially with said first rotor shaft, said second wind machine rotor being attached to said second rotor shaft, said third wind machine rotor being attached to said third rotor shaft, wherein said second rotor shaft is coupled to said first rotor shaft by a first overrunning clutch and said third rotor shaft is coupled to said second rotor shaft by a second overrunning clutch. 8. The wind machine of claim 7, wherein; said first and second overrunning clutches each comprises a ratchet wheel and pawl. 9. A wind machine adapted to extract work from the wind comprising: a first rotor shaft having a substantially horizontal axis of rotation;a second rotor shaft mounted for rotation concentric to said first rotor shafta bearing support capable of aligning the axes of rotation of said first and second rotor shafts with the wind direction;a first wind machine rotor attached to said first rotor shaft, said first wind machine rotor having an outer diameter, said first wind machine rotor being responsive to a flow of wind to rotate in a first rotational direction;a second wind machine rotor attached to said second rotor shaft, said second wind machine rotor being displaced axially downwind from said first wind machine rotor, said second wind machine rotor being responsive to the flow of wind to rotate also in the first rotational direction, the outer diameter of said second wind machine rotor being larger than the outer diameter of said first wind machine rotor;an overrunning clutch coupling said second rotor shaft to said first rotor shaft; anda single vertical output shaft coupled to the first rotor shaft for extracting power from said first and second wind machine rotors. 10. The wind machine of claim 9, wherein: said first rotor shaft is coupled to a load. 11. The wind machine of claim 9, further comprising: a third wind machine rotor displaced axially downwind from said second wind machine rotor, the outer diameter of said third wind machine rotor being larger than the outer diameter of said second wind machine rotor. 12. The wind machine of claim 11, further comprising: a third rotor shaft mounted for rotation concentric to said first rotor shaft, wherein said third wind machine rotor is attached to said third rotor shaft, said first, second, and third wind machine rotors rotating in a common rotational direction.
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이 특허에 인용된 특허 (17)
Sleeper ; Jr. H. Prescott (500 Flemington Rd. Huntsville AL 35802), Compound coaxial windmill.
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