Vertical axis wind turbine with moving blades
OwnerFlaminio FRACAROLIinventor
Life of this patent
Estimating the term…
Abstract
This invention specifically refers to a vertical axis wind turbine of the Darrieus type. More specifically, this invention refers to a vertical axis wind turbine of the Darrieus type fitted with moving vertical blades, for power generation.
Claims15
A vertical axis wind turbine with moving blades including a rotor which follows a vertical direction along one main revolving axis, three or more blades, all the same, directed vertically, placed peripherally in respect of the said rotor, equidistant one from the other and from the axis, parallel to the said axis, with each blade following a linear vertical direction with constant wing profile, and its own respective vertical rotation axis;
- each blade is connected to the said rotor through first connecting mechanisms, one or more for each blade, for the purpose of allowing said blade to rotate around its said main revolving axis, including also second connecting mechanisms in the same amount as the first, introduced between said blades and said first connecting mechanisms, for the purpose of allowing said blade to rotate around its said own respective vertical rotation axis so that it can be placed in different angular positions with regard to said first connecting mechanisms, while the said blade revolves around said rotor, said angular positions being obtained by means of auxiliary control mechanisms associated with said blade which include one control element where the first end is connected to a control arm, which is firmly fixed onto said blade, and a second end is connected to a piloting device associated with the center of said rotor wherein said piloting device single and in common between all blades, includes:
- one single control pivot which follows a piloting axis, vertical and parallel to said main rotation axis, several first connecting mechanisms, of specified length, for the purpose of connecting said control pivot to said second ends on said control elements, and several second connecting elements whose first ends are joined in specific points to said rotor and said second ends are joined in a middle point of said first connecting elements and that said first connecting elements are twice as long as said second connecting elements.
The turbine according to claim wherein a distance of the point where the first end of the second connecting element is joined to the said rotor by the turbine axis appears to be equal to the length of the second connecting element.
A vertical axis wind turbine comprising:
- a rotor having a main revolving axis;
- a plurality of blades positioned around and parallel to said rotor, each of said plurality of blades having a connecting edge and an exit edge;
- a support rod coupled to each of said plurality of blades and said rotor, said support rod having a support rod first end coupled to one of said plurality of blades and a support rod second end attached to said rotor;
- a control pivot positioned an eccentric length from the main revolving axis of said rotor;
- a first connecting element, associated with each of said plurality of blades, said first connecting element having a first connecting element first end and first connecting element second end, the first connecting element first end connected to said control pivot;
- a control element, associated with each of said plurality of blades, said control element having a control element first end and a control element second end, wherein the control element first end is connected to the first connecting element second end;
- a control arm, fixed to each of said plurality of blades, said control arm having a control arm first end and a control arm second end, wherein the control arm first end is coupled to the control element second end and the control arm second end is coupled to the support rod first end;
- a second connecting element, associated with each of said plurality of blades, said second connecting element having a second connecting element first end and a second connecting element second end, the second connecting element first end connected to said support rod at a module length from said main revolving axis of said rotor and the second connecting element second end connected to said first connecting element at a midpoint of said first connecting element;
- and
- a positioning device coupled to said control pivot, wherein said positioning device moves said control pivot relative to the main revolving axis changing the eccentric length,
- whereby each of said plurality of blades are efficiently positioned relative to wind direction and speed.
Dependencies are inferred from the claim text.