Vertical axis wind turbine with self-starting capabilities
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F03B-003/12
F03D-007/06
출원번호
US-0636334
(2009-12-11)
등록번호
US-8550786
(2013-10-08)
발명자
/ 주소
Janiuk, Peter
출원인 / 주소
Janiuk, Peter
대리인 / 주소
Bereskin & Parr LLP/S.E.N.C.R.L., s.r.l.
인용정보
피인용 횟수 :
6인용 특허 :
15
초록▼
A vertical axis wind turbine and vertical axis wind turbine assembly comprising a rotary body and a plurality of blades. A cross section through each blade of the plurality of blades transverse to the rotary axis comprises an inner camber line, an outer camber line, and a chord line. The outer cambe
A vertical axis wind turbine and vertical axis wind turbine assembly comprising a rotary body and a plurality of blades. A cross section through each blade of the plurality of blades transverse to the rotary axis comprises an inner camber line, an outer camber line, and a chord line. The outer camber line comprises a first portion, a transition portion and a second portion. The second portion is longer, in the lengthwise direction, than a combined length of the first portion and the transition portion. The average second portion thickness is less than half an average first portion thickness. A magnitude of an average rate of change in a transition portion thickness is at least twice a magnitude of an average rate of change in a first portion thickness, and a magnitude of an average rate of change in a second portion thickness.
대표청구항▼
1. A vertical axis wind turbine comprising: a rotary body operable to rotate about a rotary axis; anda plurality of blades coupled to the rotary body to rotate the rotary body, wherein each blade of the plurality of blades comprises an airfoil-shaped body having a substantially symmetrical portion,
1. A vertical axis wind turbine comprising: a rotary body operable to rotate about a rotary axis; anda plurality of blades coupled to the rotary body to rotate the rotary body, wherein each blade of the plurality of blades comprises an airfoil-shaped body having a substantially symmetrical portion, and an asymmetrical portion having a outer camber bordering a cut-away portion, and wherein a cross-section through each blade of the plurality of blades transverse to the rotary axis comprises a first endpoint located at a first longitudinal extremity of the cross-section, a second endpoint located at a second longitudinal extremity of the cross-section, a chord line extending from the first longitudinal extremity to the second longitudinal extremity, a widthwise direction substantially perpendicular to the chord line, an inner camber line, an outer camber line, a cut-away length, and a cut-away depth, wherein i) throughout the substantially symmetrical portion of the cross-section of each blade, an average magnitude of a widthwise distance between the outer camber line and the chord line is between 90 percent and 110 percent of an average magnitude of a widthwise distance between the inner camber line and the chord line;ii) a length of the substantially symmetrical portion comprises more than one tenth of the length of the chord line, the length of the substantially symmetrical portion being measured parallel to the chord line;iii) the outer camber surface of each blade of the plurality of blades faces away from the rotary body;iv) throughout the asymmetrical portion of the cross-section of each blade, an average of a first displacement from the chord line to the inner camber line is more than three times an average of a second displacement from the chord line to the outer camber line, the first displacement being positive toward the rotary axis, and the second displacement being positive away from the rotary axis;v) at any point along the chord line, there is one and only one corresponding point along the inner camber line in the widthwise direction, and one and only one corresponding point along the outer camber line in the widthwise direction;vi) the cut-away length comprises more than seventy percent of the overall length of the cross section; andvii) the cut-away depth comprises more than sixty percent of the maximum thickness of the airfoil-shaped body and less than eighty percent of the maximum thickness of the airfoil-shaped body. 2. The vertical axis wind turbine of claim 1, wherein the cut-away portion of the outer camber line intersects the chord line. 3. The vertical axis wind turbine of claim 1, wherein each blade of the plurality of blades comprises a foam core with a carbon reinforced ribbing and spar, that core being covered with carbon fiber. 4. The vertical axis wind turbine of claim 1, further comprising a generator in mechanical communication with the rotary body. 5. An assembly for converting kinetic energy from the wind into mechanical energy comprising: a rotary body operable to rotate about a rotary axis; anda plurality of blades couplable to the rotary body to rotate the rotary body, wherein each blade of the plurality of blades comprises an airfoil-shaped body having a substantially symmetrical portion, and an asymmetrical portion having an outer camber bordering a cut-away portion, and wherein a cross-section through each blade of the plurality of blades transverse to the rotary axis comprises a first endpoint located at a first longitudinal extremity of the cross-section, a second endpoint located at a second longitudinal extremity of the cross-section, a chord line extending from the first longitudinal extremity to the second longitudinal extremity, a widthwise direction substantially perpendicular to the chord line, an inner camber line, an outer camber line, a cut-away length, and a cut-away depth, wherein i) throughout the substantially symmetrical portion of the cross-section of each blade, an average magnitude of a widthwise distance between the outer camber line and the chord line is between 90 percent and 110 percent of an average magnitude of a widthwise distance between the inner camber line and the chord line;ii) a length of the substantially symmetrical portion comprises more than one tenth of the length of the chord line, the length of the substantially symmetrical portion being measured parallel to the chord line;iii) the outer camber surface of each blade of the plurality of blades faces away from the rotary body;iv) throughout the asymmetrical portion of the cross-section of each blade, an average of a first displacement from the chord line to the inner camber line is more than three times an average of a second displacement from the chord line to the outer camber line, the first displacement being positive toward the rotary axis, and the second displacement being positive away from the rotary axis;v) at any point along the chord line, there is one and only one corresponding point along the inner camber line in the widthwise direction, and one and only one corresponding point along the outer camber line in the widthwise direction;vi) the cut-away length comprises more than seventy percent of the overall length of the cross section; andvii) the cut-away depth comprises more than sixty percent of the maximum thickness of the airfoil-shaped body and less than eighty percent of the maximum thickness of the airfoil-shaped body. 6. The assembly of claim 5, wherein the couplers impede coupling of each blade of the plurality of blades to the rotary body such that the outer camber line faces the rotary body, and the inner camber line faces away from the rotary body. 7. The assembly of claim 5, wherein the cut-away portion of the outer camber line intersects the chord line. 8. The assembly of claim 5, wherein each blade of the plurality of blades comprises a foam core with a carbon reinforced ribbing and spar, that core being covered with carbon fiber. 9. The assembly of claim 5, further comprising a generator adapted for mechanical communication with the rotary body.
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이 특허에 인용된 특허 (15)
Bertels, Augustinus W. M., Device for converting wind energy into another form of energy.
Doering John N. (1048 Palatka Rd. Louisville KY 40214) Doering Lloyd D. (1048 Palatka Rd. Louisville KY 40214) Doering Michael N. (5411 Distler Rd. Louisville KY 40258), Fluid active device.
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