Title:
WINDMILL DRIVEN ENERGY CONVERTING DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/029445
Kind Code:
A3
Abstract:
A windmill driven energy converting device (2) comprising a number of wind blades (12) attached to a shaft (6). In one embodiment of the invention the shaft (6) is connected to a rotor (22) with permanent magnets, which rotor (22) is arranged inside or outside a stator having an electrically conducting wall (24) that is configured to be subjected to magnetic induction generated by the rotation of the permanent magnets and thus configured to generate heat through generation of eddy currents and a heat exchanger comprising a heat-carrying media (e.g. a fluid) configured to take up thermal energy from the conducting wall (24). It is also possible to connect the shaft (6) to a generator configured to produce electricity. The windmill driven energy converting device (2) comprises means for changing the axial position of the electrically conducting wall (24) relative to the rotor (22) and means for regulating the pitch of the blades (12), where the regulation of the pitch of each blade (12). In one preferred embodiment of the invention a spring member (32) to provide a force towards a force transferring member (34) configured to transfer force from the spring member (32) to an eccentric member (40) that is mechanically connected to the blade shaft (44) of the blade (12). The eccentric member (40) is configured to rotate about longitudinal axis of the blade shaft (44) so that the wind induced forces that acts on the blade causes the blade to pitch in a manner that causes the eccentric member (40) to push against and move the force transferring member (34) towards the at least one spring member (32).
Inventors:
PEDERSEN ALFRED LISBJERG (DK)
Application Number:
PCT/DK2010/000122
Publication Date:
July 07, 2011
Filing Date:
September 06, 2010
Export Citation:
Assignee:
ALTECH (KE)
PEDERSEN ALFRED LISBJERG (DK)
PEDERSEN ALFRED LISBJERG (DK)
International Classes:
F03D7/02; F03D9/00
Domestic Patent References:
| WO2006010377A1 | 2006-02-02 |
Foreign References:
| US4486638A | 1984-12-04 | |||
| JPS59212576A | 1984-12-01 | |||
| DE3008327A1 | 1981-09-17 | |||
| FR2500078A1 | 1982-08-20 |
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