IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0059385
(2009-08-21)
|
등록번호 |
US-8690541
(2014-04-08)
|
우선권정보 |
IE-S2008/0691 (2008-08-27) |
국제출원번호 |
PCT/IE2009/000058
(2009-08-21)
|
§371/§102 date |
20110505
(20110505)
|
국제공개번호 |
WO2010/023648
(2010-03-04)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
1 인용 특허 :
3 |
초록
▼
A water powered turbine (1) comprises a main support frame-work (2) which rotatably carries a rotor (3) comprising a main shaft (5) to which three blades (7) are attached by carrier discs (8) and (9). The carrier discs (8, 9) are rigidly secured to the main shaft (5), and the blades (7) are pivotall
A water powered turbine (1) comprises a main support frame-work (2) which rotatably carries a rotor (3) comprising a main shaft (5) to which three blades (7) are attached by carrier discs (8) and (9). The carrier discs (8, 9) are rigidly secured to the main shaft (5), and the blades (7) are pivotally connected to the discs (8) and (9) by pivot shafts (16) and (17). Each blade (7) is of constant hydro-foil cross-section along its entire length and defines a first upper spiral (12) and a second lower spiral (13). The first spiral (12) extends from a first end (10) which is coupled to the main shaft (5) by the carrier disc (8), and the second spiral (13) of each blade (7) extends from a second end (11) of the blade (7) which is coupled to the main shaft (5) by the carrier disc (9). The first and second spirals (12) and (13) are of opposite hand and extend from the respective first and second ends (10, 11) to meet midway between the respective first and second ends (10, 11). The first and second spirals (12, 13) define respective central spiral axes which substantially coincide with a main central rotational axis (4) about which the rotor (3) is rotatable. The pivot shafts (16, 17) of each blade (7) define a corresponding secondary axis (18) about which the blades (7) are pivotal for selectively altering the dive angle of the first and second spirals (12) and (13) of the blades (7).
대표청구항
▼
1. A turbine comprising: a rotor defining a main central rotational axis about which the rotor is rotatable, the rotor comprising:at least one elongated ribbon type blade extending between a first end and a second end and being of transverse cross-section along substantially its entire length of one
1. A turbine comprising: a rotor defining a main central rotational axis about which the rotor is rotatable, the rotor comprising:at least one elongated ribbon type blade extending between a first end and a second end and being of transverse cross-section along substantially its entire length of one of an airfoil and a hydrofoil cross-section, the first end of the at least one blade being located at a first location adjacent the main central rotational axis, and the second end of the at least one blade being located at a second location adjacent the main central rotational axis, the second location being axially spaced apart from the first location, the at least one blade defining a first spiral and a second spiral, the first spiral defining a first spiral axis, and the second spiral defining a second spiral axis, the first spiral extending from the first end of the blade and the second spiral extending from the second end of the blade to meet the first spiral intermediate the first and second ends of the blade with the first and second spiral axes substantially coinciding with the main central rotational axis, the first and second spirals of the at least one blade being of opposite hand when viewed axially in opposite directions from the respective first and second ends of the blade. 2. A turbine as claimed in claim 1 in which the first spiral of the at least one blade extends to a maximum spiral diameter, and the maximum diameter of the second spiral is similar to the maximum diameter of the first spiral. 3. A turbine as claimed in claim 1 in which the first and second spirals of the at least one blade meet along the blade substantially midway between the first and second ends thereof. 4. A turbine as claimed in claim 1 in which the second spiral of the at least one blade extends around the main central rotational axis an angular distance of up to 120°. 5. A turbine as claimed in claim 1 in which the first spiral of the at least one blade extends around the main central rotational axis an angular distance of up to 120°. 6. A turbine as claimed in claim 1 in which the at least one blade is of substantially constant transverse cross-section along substantially its entire length. 7. A turbine as claimed in claim 1 in which the rotor comprises at least two elongated ribbon type blades, the first end of each blade being located adjacent the first location adjacent the main central rotational axis, and the second end of each blade being located adjacent the second location adjacent the main central rotational axis. 8. A turbine as claimed in claim 7 in which the blades are similar to each other, and are equi-spaced apart circumferentially around the main central rotational axis. 9. A turbine as claimed in claim 1 in which the rotor comprises an elongated main shaft and the first spiral of each blade extends from the first location adjacent the main shaft, and the second spiral of each blade extends from the second location adjacent the main shaft. 10. A turbine as claimed in claim 1 in which each blade is pivotally coupled adjacent the first location and the second location relative to the main central rotational axis for facilitating selective altering of the dive angle of the blade. 11. A turbine as claimed in claim 10 in which each blade is pivotally coupled relative to the main central rotational axis about a corresponding secondary axis for facilitating altering of the dive angle of the blade, the secondary axis of each blade extending substantially parallel to the main central rotational axis. 12. A turbine as claimed in claim 1 in which the turbine is adapted to be water powered. 13. A rotor for a turbine, the rotor defining a main central rotational axis about which the rotor is rotatable, the rotor comprising: at least one elongated ribbon type blade extending between a first end and a second end and being of transverse cross-section along substantially its entire length of one of an airfoil and a hydrofoil cross-section, the first end of the at least one blade being located at a first location adjacent the main central rotational axis, and the second end of the at least one blade being located at a second location adjacent the main central rotational axis, the second location being axially spaced apart from the first location, the at least one blade defining a first spiral and a second spiral, the first spiral defining a first spiral axis, and the second spiral defining a second spiral axis, the first spiral extending from the first end of the blade and the second spiral extending from the second end of the blade to meet the first spiral intermediate the first and second ends of the blade with the first and second spiral axes substantially coinciding with the main central rotational axis, the first and second spirals of the at least one blade being of opposite hand when viewed axially in opposite directions from the respective first and second ends of the blade. 14. A rotor as claimed in claim 13 in which the first spiral of the at least one blade extends to a maximum spiral diameter, the maximum diameter of the second spiral being similar to the maximum diameter of the first spiral, and the first and second spirals of the at least one blade meet along the blade substantially midway between the first and second ends thereof. 15. A rotor as claimed in claim 13 in which the first spiral of the at least one blade extends around the main central rotational axis an angular distance of up to 120°, and the second spiral of the at least one blade extends around the main central rotational axis an angular distance of up to 120°. 16. A rotor as claimed in claim 13 in which the at least one blade is of substantially constant transverse cross-section along substantially its entire length. 17. A rotor as claimed in claim 13 in which the rotor comprises at least two elongated ribbon type blades, the first end of each blade being located adjacent the first location adjacent the main central rotational axis, and the second end of each blade being located adjacent the second location adjacent the main central rotational axis. 18. A rotor as claimed in claim 13 in which the rotor comprises an elongated main shaft and the first spiral of each blade extends from the first location adjacent the main shaft, and the second spiral of each blade extends from the second location adjacent the main shaft. 19. A rotor as claimed in claim 13 in which each blade is pivotally coupled adjacent the first and second locations relative to the main central rotational axis about a corresponding secondary axis for facilitating selective altering of the dive angle of the blade, the secondary axis of each blade extending substantially parallel to the main central rotational axis. 20. A rotor as claimed in claim 13 in which the rotor is adapted for use in a water powered turbine.
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