• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a rotor (1) comprising blades (2, 3) rotating about an axis of rotation (X), each blade being configured to transmit to the axis of rotation, during a rotation of the rotor around of the axis of rotation, under the effect of the flow of a fluid, alternatively a driving torque causing the rotor to rotate about the axis of rotation, and a resisting torque tending to oppose the rotation of the rotor about the axis of rotation, at least one of the blades comprising means for increasing, under the effect of the flow of the fluid, a projected surface of the blade on a plane perpendicular to a flow direction of the fluid, only when the blade transmits the motor torque to the axis of rotation of the rotor.
    公开号:FR3019237A1
    申请号:FR1452798
    申请日:2014-03-31
    公开日:2015-10-02
    发明作者:Stephan Norbert Guignard
    申请人:Aix Marseille Universite；Centre National de la Recherche Scientifique CNRS；
    IPC主号:
    专利说明:

    [0001] The present invention relates to a rotor used in wind turbines or tidal turbines, and in particular to rotors comprising blades which, under the effect of a flow of fluid, transmit to the axis of rotation of the rotor during a rotation turn around this axis, alternately a motor torque driving the rotor in rotation, and a resisting torque, opposing the rotation of the rotor. Thus, the present invention relates more particularly, but not exclusively, to rotors with an axis that is not parallel to the direction of flow of the fluid, such as Savonius-type rotors. A Savonius-type rotor conventionally comprises two or more rigid blades, of semi-cylindrical shape, arranged symmetrically about the axis of rotation of the rotor. The diameter of each of the blades is between the radius and the diameter of the rotor. When the diameter of the blades is greater than the radius of the rotor, the concave faces of the blades face partially two by two.
    [0002] Savonius type rotors have the advantage of offering high torque at start-up and thus of being able to start at low fluid flow speeds. Rotors of this type also provide performance independent of the flow direction of the fluid in a plane perpendicular to the rotor axis, and are relatively compact.
    [0003] Their optimal rotation speed is relatively low, of the order of the flow velocity of the fluid at the outer end of the blades. By comparison, Darreius wind turbines, also vertical axis have a speed at the end of the blades of the order of five times the flow velocity of the fluid. For horizontal axis wind turbines, this speed is of the order of ten times the flow velocity of the fluid. Savonius-type rotors are therefore less sensitive to possible impacts of objects against the blades and pose little danger to moving objects in the flow. The main drawback of rotors of this type lies in their relatively low efficiency. They also have a variable torque during a rotation of the blades, and a relatively high mass.
    [0004] It has been shown that a Savonius rotor with two blades has a maximum efficiency when the distance between the inner longitudinal edges of the two blades is of the order of one sixth of the rotor diameter defined by the distance between the longitudinal edges. outside two of the blades.
    [0005] Even if this condition is realized, the efficiency of such a rotor remains low. It may therefore be desirable to improve the efficiency of a Savonius-type rotor. Embodiments relate to a rotor comprising blades rotating about an axis of rotation, each blade being configured to transmit to the axis of rotation, during a revolution of rotation of the rotor about the axis of rotation, under the direction of rotation. effect of the flow of a fluid, alternatively a motor torque causing the rotor to rotate about the axis of rotation, and a resisting torque tending to oppose the rotation of the rotor about the axis of rotation. According to one embodiment, at least one of the blades comprises means for increasing, under the effect of the flow of the fluid, a projected surface of the blade on a plane perpendicular to a direction of flow of the fluid, only when the blade transmits the motor torque to the axis of rotation of the rotor. According to one embodiment, at least one of the blades comprises means for decreasing, under the effect of the fluid flow, its projected surface, only when the blade transmits the torque resistant to the axis of rotation of the rotor. According to one embodiment, at least one of the blades comprises, in a region of an outer longitudinal edge of the blade, a flexible portion configured to deploy outwardly of the rotor without turning under the effect of the flow of the blade. fluid, when the blade transmits the engine torque to the axis of rotation of the rotor. According to one embodiment, at least one of the blades comprises in a region of an outer longitudinal edge of the blade, a flexible portion configured to retract inwardly of the rotor without remaining pressed against another blade of the rotor, when the blade transmits the torque resistant to the axis of rotation of the rotor. According to one embodiment, at least one of the blades comprises a rigid portion and a flexible or pivoting flap fixed along an outer longitudinal edge of the blade.
    [0006] According to one embodiment, the blades are arranged around the axis of rotation so that concave faces of the blades are partially vis-à-vis. According to one embodiment, the blades are contiguous along the axis of rotation of the rotor. According to one embodiment, at least one of the blades is on one side of a plane passing through a point of an inner longitudinal edge of the blade and the axis of rotation, while the flexible portion of the blade is at least partly on the other side of this plane.
    [0007] According to one embodiment, at least one of the blades comprises a rigid inner portion between the inner and outer longitudinal edges of the blade, and an outer portion fixed along the outer longitudinal edge of the inner portion, the outer portion being flexible or rigid and attached to the inner part by a hinge.
    [0008] According to one embodiment, each of the blades comprises a rigid inner portion having in a plane perpendicular to the axis of rotation a curved profile, planar or semicircular. According to one embodiment, each blade comprises a rigid central portion, at least one of the blades having a flexible side portion along its inner longitudinal edge, and at least one of the blades having a flexible side portion along its outer longitudinal edge. . Embodiments also relate to a wind turbine comprising the previously defined rotor.
    [0009] Embodiments also relate to a tidal turbine comprising the rotor defined previously, immersed in a liquid, the axis of rotation of the rotor being substantially vertical. According to one embodiment, the tidal turbine comprises an electricity generator coupled to the rotor and disposed above the rotor and the surface of the liquid. Exemplary embodiments of the invention will be described in the following, without limitation in connection with the accompanying drawings in which: Figure 1 is a perspective view of a rotor, according to one embodiment, the figure 2 is an axial sectional view of the rotor, FIG. 3 is a side view of the rotor, according to one embodiment, FIGS. 4A to 4C show in section the rotor in various orientations with respect to the direction of flow of a rotor. fluid in which the rotor is immersed, Figure 5 is an axial sectional view of the rotor and illustrates different phases of action of the blades on the rotation of the rotor depending on the direction of flow of a fluid in which the rotor is 6 is an axial sectional view of a conventional Savonius type rotor and illustrates different phases of action of the blades on the rotation of the rotor as a function of the direction of flow of a fluid in which the rotor is dipped, the FIGS. 7A to 7D are axial sectional views of rotors according to various other embodiments, FIGS. 8 and 9 are axial sectional views of rotors according to other embodiments. FIGS. 1, 2 and 3 represent a rotor 1 of the Savonius type having an axis of rotation X, and comprising blades 2, 3 uniformly distributed around the axis X. The blades 2, 3 each have a curved profile in a plane perpendicular to the X axis, with a concave face, a convex face, an inner longitudinal edge 22, 32 close to the X axis of the rotor and an outer longitudinal edge 23, 33 farther from the X axis than the longitudinal edge 22, 32. The blades 2, 3 can be fixed by a transverse edge 24, 34 on a plate 11, for example disk-shaped, perpendicular to the axis X, or by opposite transverse edges 24, 25, 34 , 35, between two flanges 11, 12, for example disc-shaped, perpendicular to the X axis (Figure 3). The blades 2, 3 can be fixed on the plate 11 or between the flanges 11, 12 so that the axis X is located between the inner longitudinal edges 22, 32 and outside 23, 33 of each blade 2, 3. The plate 11 may be coupled to the rotor of an electric generator 14 (FIG. 1), either directly via a shaft 13 coaxial with the X axis, or by means of a mechanical multiplier. Whatever the direction of displacement in a plane perpendicular to the axis of rotation X, of the fluid in which it is immersed, the rotor 1 rotates in the same direction indicated by the arrow 9 in FIG. 2. The rotor 1 can be used in any fluid, such as air and / or water, or even a complex fluid such as a liquid surmounted by a gas, or a liquid mixed with solid particles, with its axis of rotation X disposed in any direction, with the exception of the flow direction of the fluid, for example vertically or horizontally. In water (or other liquid), only the rotor 1 can be immersed with its substantially vertical axis of rotation, keeping the generator 14 above the water.
    [0010] Thus, it is possible to arrange the rotor 1 coupled to a generator by avoiding an interface between two moving parts relative to each other is immersed. It should be noted that at sea, if the rotor is floating, especially in the presence of waves, the X axis of the rotor can be caused to vary significantly around the vertical, for example between [-300, + 301 compared to the vertical, without the rotor efficiency being affected. It is therefore not necessary that the flow direction of the fluid is fixed and perpendicular to the axis of rotation of the rotor. According to one embodiment, a flexible flap 21, 31 is fixed to the outer longitudinal edge 23, 33 of each blade 2, 3, so as to be able to orient freely under the effect of the flow of fluid in the vicinity of the edge 23, 33. Each flap 21, 31 may extend over the whole of the outer longitudinal edge 23, 33 of the blade 2, 3 or only part of this edge, or be divided into several sections fixed to the edge 23, 33 of the blade 2, 3. Indeed, it may be advantageous to provide for dividing the flaps into sections if the rotor can locally undergo variations in intensity and / or in the direction of the flow of the fluid. In this case, each flap section can be oriented between its fully deployed and retracted positions, depending on the direction and intensity of the fluid flow that it undergoes. It can also be provided that the rotor is immersed in different layers of superimposed fluids, such as in water and in the air. In this case, the width and the flexibility or the range of movement of each flap section can also be adapted to the density and viscosity of the fluid in which the flap section is intended to be immersed. Each flap 21, 31 may extend up to a certain distance from each flange 11, 12, so as not to be impeded in its movements by the flanges 11, 12. This arrangement can also make it possible to reduce the risk that object gets stuck between the flap and the flange. The width of each shutter 21, 31 may depend on the flexibility of the shutter. Indeed, each of the flaps 21, 31 is rigid enough not to turn under the effect of the thrust exerted by the fluid flow. The angular clearance of the free edge 26, 26 of each flap 21, 31 can thus be limited to [80 °, + 80 °] relative to the direction of the tangent to the outer longitudinal edge 23, 33 of the blade where the flap is fixed. In addition, each of the flaps 21, 31 must not be able to completely mask an input of the rotor while remaining pressed against the other blade under the effect of the thrust exerted by the fluid. This last condition can of course be achieved with sufficiently narrow shutters. Thus, the width of each flap 21, 31 may for example be between 1/6 and once the radius of the rotor 1, according to the rigidity of the flap 21, 31. Note that this width is not necessarily constant over any the height of the blade 2, 3. Likewise, the radius of the blades 2, 3 is not necessarily constant over the entire height of the blades. The inner longitudinal edges 22, 32 and outer 23, 33 of each blade 2, 3 are not necessarily straight and parallel to the axis of rotation X, but may have any other shape, for example a helical shape around the blade. X axis. Each flap 21, 31 may be made of a flexible material, such as a resin or a woven or non-woven fabric, optionally coated with a resin. Each flap 21, 31 may be fixed on the outer longitudinal edge 23, 33 of one of the blades 2, 3 by any means adapted to the materials in which the blades 2, 3 and the flaps 21, 31 are made. flap 21, 31 may be attached to one of the blades 2, 3 for example using glue, adhesive strips, screws, nails or rivets. The flaps 21, 31 may also be rigid and fixed to the edges 23, 33 of the blades 2, 3 by hinges or a flexible connection forming a hinge with limited movement to prevent a reversal and a veneer flap against another blade. Each of the blades 2, 3 with its respective flap 21, 31 can also be made in one piece, for example by molding, the flexibility of the part corresponding to the flap being obtainable by the use of different materials or by playing on the blade. thickness of the blade.
    [0011] According to one embodiment, each blade 2, 3 has a rigidity which decreases going from the inner longitudinal edge 22, 32 to the outer longitudinal edge 26, 36 of the flap portion 21, 31. This decrease can be progressive or by one or more jumps, so that the portion in the vicinity of the outer edge 26, 36 is flexible. In the example of FIGS. 1 to 3, the rotor 1 comprises two blades arranged symmetrically about the X axis, each blade having a semi-cylindrical shape (FIGS. 1 and 3) or a semicircular profile in a plane perpendicular to the X axis (Figures 1 to 3). Each of the inner longitudinal edges 22, 32 of one of the two blades 2, 3 is located between the inner and outer longitudinal edges 22, 23, 32, 33 of the other of the two blades. The inner longitudinal edges 22, 32 are spaced apart by a distance e which can be chosen to be equal to a quarter of the radius R of each blade 2, 3 or to one sixth of the diameter D of the rotor 1, the diameter D corresponding to the distance between the edges external longitudinal 23, 33 of the two blades 2, 3. Moreover, in the example of Figures 1 and 3, the edges 22, 32 and 23, 33 are parallel to the axis X. During the rotation of the rotor 1, the flexible flaps 21, 31 tend to orient in the direction and as a function of the amplitude of the apparent speed of the fluid. This apparent speed is defined by a velocity vector Vr, Vr 'corresponding to the vector difference of a velocity vector V1, V1' linked in amplitude and in direction to the flow velocity of the fluid in the vicinity of the flap 21, 31, and a velocity vector V2, V2 'having an amplitude related to the linear velocity of the longitudinal edge 23, 33 and a direction tangential to the blade 2, 3 towards the inside of the blade in the region of the longitudinal edge 23, 33. Note that the velocity vector V1, V1 'is also related to the angular position of the rotor 1 with respect to the direction of flow of the fluid corresponding to the direction of the vectors V1, Vt. Indeed, in a region downstream of the rotor 1 relative to the direction of flow of the fluid, the flap 21, 31 does not undergo or little fluid flow force. At the start of the rotor 1 and until the linear velocity of the flaps 21, 31 in rotation about the axis X reaches the flow velocity of the fluid, the apparent velocity vector Vr, Vr 'in the vicinity of each of the flaps 21, 31 can have any direction. When their linear speed becomes greater than that of the fluid, the apparent velocity vector Vr, Vr 'is directed in an angular sector centered on the direction tangential to the blade 2, 3 outwards in the region of the longitudinal edge 23, 33 ( direction of the velocity vector V2 in Fig. 2), and limited to [-90 °, + 90 °]. Note, however, that the optimum linear velocity of the outer edge 23, 33 of each blade of a Savonius type rotor is between 0.5 and 0.7 times the flow velocity of the fluid. FIGS. 4A to 4C show the blades 2, 3 and the direction of the apparent velocity vector Vr, Vr 'of the fluid, in different configurations that can occur during a revolution of the rotor 1, in the case where the linear speed of the flaps 21, 31 (or outer edges 23, 33) is less than the flow velocity of the fluid. On substantially half of a revolution of the rotor 1, the apparent velocity vector Vr in the vicinity of the flap 21 is directed towards the outside of the rotor 1, while in the vicinity of the flap 31, this apparent velocity vector Vr 'is directed towards the inside of the rotor (FIGS. 4B, 4C). On the other half of a revolution of the rotor 1, the orientations of the apparent speed vectors Vr, Vr 'in the vicinity of the two flaps 21, 31 are reversed (FIG. 4A). Moreover, when the linear velocity V2, V2 'of the flaps 21, 31 is smaller than the flow velocity of the fluid V1, the apparent velocity vector can be directed in a direction liable to cause the flap 21 to flip up. that is to say have a component in the direction of the vector V2, V2 ', having a direction opposite to the latter. Thus, in FIG. 4A, the speed vector Vr is able to turn the flap 21 towards the inside of the rotor 1. In FIG. 4B, the speed vector Vr is able to turn the flap 21 towards the outside of the rotor 1. The transition from the configuration of FIG. 4A to that of FIG. 4B causes the flap 21 to tilt from the inside to the outside. When one of the two flaps 21 undergoes an apparent speed of fluid Vr directed towards the outside of the rotor 1 (FIG. 4B), it has a tendency to unfold (towards the outside of the rotor 1) and therefore to increase the frontal surface S1 of the blade 2, opposite to the flow of the fluid (surface projected on a plane perpendicular to the direction of flow of the fluid). It may also be noted that this deployment occurs when the blade opposes its concave face to the fluid flow. This results in an increase in the engine torque transmitted by the blade 2 to the axis of rotation X of the rotor, tending to rotate the rotor 1. Conversely, when one of the two flaps 31 undergoes a force towards the inside of the rotor 1, it tends to fade (towards the inside of the rotor 1) and thus to reduce the front surface S2 (less than S1) of the blade 3 opposite to the flow of the fluid. It may also be noted that this erasure occurs when the blade opposes its convex face to the fluid flow. This results in a reduction in the resistive torque exerted by the blade 3 (compared to that which the blade would have if its flap remained in the deployed configuration), during a phase where it tends to oppose the rotation of the rotor 1. FIG. 5 represents different operating phases I to IV of the rotor 1 as a function of the flow direction of the fluid, in a reference frame connected to the rotor. The different phases I to IV therefore correspond to angular sectors of incidence of the flow of the fluid on the rotor 1. During phase I, the blade 2 receives the fluid on its concave face and thus exerts a driving torque on the rotor During this phase, the blade 3 receives the fluid on its convex face and therefore exerts a resistive torque on the rotor. During phase II, the respective roles of blades 2, 3 are reversed. Thus, the blade 3 exerts a driving torque on the rotor, while the blade 2 exerts a resistive torque. The phases I and II are therefore alternatively motor and resistive phases for each of the blades 2, 3. The phases III and IV between the phases I and II define "dead" angular sectors, in which the fluid 20 does not engage with the concave face of none of the blades 2, 3. In fact, the blades continue to exert a low engine torque during phases III and IV. By way of comparison, FIG. 6 represents the various operating phases I to IV of a conventional Savonius-type rotor. It appears that the "dead" angular sectors corresponding to the phases III and IV are less extensive in FIG. 5 than in FIG. 6, thanks to the presence of the flexible shutters 21, 31. It should be noted that the flexible parts and the shutters which have just been described are automatically oriented with respect to the blades, under the effect of the flow of the fluid, without it being necessary to provide active means for orienting the flexible parts and the flaps. Note also that the flexible parts or flaps are located further from the axis of rotation X than the blades. Therefore, in the deployed position, the forces they receive from the fluid flow produce a proportionally larger motor torque (depending on the distance between the point of application of the force and the axis of rotation X) than the driving torque exerted by the driving blade. The invention thus makes it possible to improve the efficiency of the rotor, by means of simple means and therefore at a relatively modest cost. It will be apparent to those skilled in the art that the present invention is capable of various alternative embodiments and various applications. In particular, the invention also covers a rotor with a single blade equipped with a flexible part. Nor is it necessary for the flexible part to retract inside the rotor when the blade exerts a resistive torque on the rotor. It is simply important that the flexible part can be deployed when the blade exerts a driving torque, and retract along the tangent to the outer longitudinal edge of the blade, when the blade exerts a resistant torque. The invention is also not limited to a rotor having semi-cylindrical blades and flaps extending the outer edges of the blades.
    [0012] Thus, Figs. 7A to 7E show rotor profiles according to various other embodiments. In Fig. 7A, the blades 2a, 2b are formed in one piece with a rigid inner portion having a semicircular profile in a plane perpendicular to the X axis, and a flexible extension 21a, 31a of the outer edge (relative to to the X axis of the rotor) of the inner part. In FIG. 7B, the blades 2b, 3b are plane and arranged facing each other, each blade having an edge secured to a flexible extension 21b, 31b. In FIG. 7C, the blades 2c, 3c differ from those of FIG. 7B in that the flat portion of each blade is replaced by a slightly curved portion with a concave face on the X axis side of the rotor. The flexible portions 21c, 31c of the blades 2c, 3c are substantially identical to the flexible portions 21b, 31b. In FIG. 7D, the profile or section of each blade 2d, 3d in a plane perpendicular to the X axis of the rotor has a more complex shape, comprising an inner portion 22d, 32d (with respect to the X axis of the rotor ) substantially describing a quarter circle, followed by a slightly convex portion 23d, 33d oriented towards the X axis, and a flexible portion 21d, 31d partly bypassing the inner longitudinal edge of the other blade. According to one embodiment, all or part of the flexible portion of each blade of the rotor extends on one side of a plane passing through a point of the inner longitudinal edge of the blade and the axis of rotation of the rotor, while that the blade is on the other side of this plane (Figures 1, 2, 7A to 7C). In other words, each blade surrounds the X axis of the rotor on an angular sector AS greater than 180 °. In the example of FIG. 7D, each blade surrounds the X axis of the rotor on an angular sector close to 180 °.
    [0013] Furthermore, it is also not necessary that the rotor blades are fixed on the support 11 so that the X axis of the rotor is located between the inner and outer longitudinal edges of each blade. Indeed, the inner longitudinal edges of all the rotor blades may be contiguous in the region of the X axis of the rotor, as shown in Figure 7E. In this figure, the blades 2e, 3e each have substantially the same profile as those of Figure 7A with flexible outer portions 21e, 31e, but inner longitudinal edges contiguous in the region of the X axis of the rotor. This arrangement makes it possible in particular to prevent an object from getting caught between the blades.
    [0014] The invention is also not limited to a two-bladed rotor, but also covers rotors with three or more blades, each blade having a flexible outer portion. Thus, FIG. 8 shows a rotor with three blades 4, 5, 6 having a semicircular profile distributed uniformly around the axis of rotation X of the rotor 10, and comprising a flexible part 41, 51, 61 extending the semi-circular profile towards the outside of the rotor. FIG. 9 represents a rotor with four vanes 2, 3, 7, 8 disposed symmetrically around the X axis of the rotor 20, that is to say comprising two additional vanes 7, 8 with respect to the rotor 1. flexible portion 21, 31, 71, 81 extends the semicircular profile of each blade 2, 3, 7, 8 outwardly of the rotor. In the case of blades in one piece with a rigid part and a flexible part, only a transverse edge of the rigid part is fixed to the flange 11, or only the transverse edges of the rigid part of each blade are fixed to the flanges 11 12. The transverse edges of the flexible parts are not fixed to the flanges 11, 12. In addition, in the case of blades having regions of different stiffnesses, the rigid region of one of the blades does not necessarily extend from from its inner longitudinal edge to the flexible portion of the blade in the region of its outer longitudinal edge. Indeed, it can be expected that the region of the inner longitudinal edge of one of the blades is flexible.
    [0015] Thus, the region of the inner longitudinal edge of the blade can also retract or expand depending on the concave or convex face of the blade which is opposed to the flow flow of the fluid. In this case, the transverse edges of the region of the inner longitudinal edge of the blade are not fixed either to the flanges 11, 12. Thus, only the transverse edges of a central region of the blade can be attached to one or two flanges. It can also be expected that one of the blades has a flexible region on the side of its inner longitudinal edge, while another of the blades has a flexible region on the side of its outer longitudinal edge.
    [0016] The invention is also not limited to cylindrical blades, but also covers blades having other shapes, such as a helical shape, in particular to overcome variations in the engine torque exerted by each of the blades during the rotation of the rotor. In this case, the flaps or the flexible parts can be divided into sections that can expand and retract individually depending on the engine or resistive torque exerted by the blade section to which it is linked. It should also be noted that a rotor with helical blades can be rotated even if the axis of rotation of the rotor is arranged in the direction of flow of the fluid. The invention also covers all possible combinations of the embodiments described and in particular those shown in Figures 1, 2, 7A to 7E, 8 and 9.
    权利要求:
    Claims (14)
    [0001]
    REVENDICATIONS1. Rotor comprising blades (2, 3) rotating about an axis of rotation (X), each blade being configured to transmit to the axis of rotation, during a rotation of the rotor (1) about the axis of rotation rotation, under the effect of the flow of a fluid, alternately a driving torque rotating the rotor about the axis of rotation, and a resisting torque tending to oppose the rotation of the rotor around the axis of rotation, characterized in that at least one of the blades (2, 3) comprises means for increasing, under the effect of the flow of the fluid, a projected surface (S1) of the blade on a plane perpendicular to a direction of flow of the fluid, only when the blade transmits the engine torque to the axis of rotation (X) of the rotor.
    [0002]
    2. Rotor according to claim 1, wherein at least one of the blades (2,
    [0003]
    3) comprises means for decreasing, under the effect of the flow of the fluid, its projected surface (S2) only when the blade transmits the torque resistant to the axis of rotation of the rotor. 3. Rotor according to claim 1 or 2, wherein at least one of the blades comprises in a region of an outer longitudinal edge of the blade, a flexible portion (21, 31) configured to deploy outwardly of the rotor. without turning under the effect of the fluid flow, when the blade transmits the engine torque to the axis of rotation (X) of the rotor.
    [0004]
    4. Rotor according to one of claims 1 to 3, wherein at least one of the blades comprises in a region of an outer longitudinal edge of the blade, a flexible portion (21, 31) configured to retract towards the inside the rotor without remaining pressed against another of the rotor blades, when the blade transmits the torque resistant to the axis of rotation (X) of the rotor. 30
    [0005]
    5. Rotor according to one of claims 3 and 4, wherein at least one of the blades is on one side of a plane passing through a point of an inner longitudinal edge (22, 32) of the blade and the the axis of rotation (X), while the flexible portion (21, 31) of the blade is located at least partly on the other side of this plane.
    [0006]
    6. Rotor according to one of claims 1 to 5, wherein at least one of the blades (2, 3) comprises a rigid portion and a flexible or pivoting flap (21, 31) fixed along an outer longitudinal edge. (23, 33) of the blade.
    [0007]
    7. Rotor according to one of claims 1 to 6, wherein the blades 10 are arranged around the axis of rotation so that concave faces of the blades are partially vis-à-vis.
    [0008]
    8. Rotor according to one of claims 1 to 6, wherein the blades (2, 3) are contiguous along the axis of rotation (X) of the rotor (1). 15
    [0009]
    9. Rotor according to one of claims 1 to 8, wherein at least one of the blades (2, 3) comprises a rigid inner portion between the inner longitudinal edges (22, 32) and outer (23, 33) of the blade and an outer portion secured along the outer longitudinal edge of the inner portion, the outer portion being flexible or rigid and secured to the inner portion by a hinge.
    [0010]
    10. Rotor according to one of claims 1 to 9, wherein each of the blades comprises a rigid inner portion having in a plane perpendicular to the axis of rotation (X) a curved profile, planar or semicircular.
    [0011]
    11. Rotor according to one of claims 1 to 10, wherein each blade (2, 3) comprises a rigid central portion, at least one of the blades 30 having a flexible side portion along its inner longitudinal edge (22, 32). ), and at least one of the blades having a flexible side portion along its outer longitudinal edge (23, 33).
    [0012]
    Wind turbine comprising a rotor according to one of claims 1 to 11.
    [0013]
    13. A hydrolienne comprising a rotor (1) according to one of claims 1 to 11, the rotor being immersed in a liquid, the axis of rotation (X) of the rotor being substantially vertical.
    [0014]
    14. A water turbine according to claim 13, comprising an electricity generator (14) coupled to the rotor (1) and disposed above the rotor and the surface of the liquid.
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    HRP20210956T1|2021-10-15|
    US20170138344A1|2017-05-18|
    CN106460771B|2019-09-17|
    ES2877515T3|2021-11-17|
    FR3019237B1|2019-03-29|
    EP3126668A1|2017-02-08|
    CA2980979A1|2015-10-08|
    DK3126668T3|2021-06-28|
    CN106460771A|2017-02-22|
    PT3126668T|2021-07-02|
    PL3126668T3|2021-11-22|
    US10400747B2|2019-09-03|
    WO2015150697A1|2015-10-08|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4424451A|1979-12-17|1984-01-03|Friedrich Schmidt|Water turbine|
    JP2009203968A|2008-02-29|2009-09-10|Tokyo Institute Of Technology|Savonius windmill and wind power generator|
    JP2009209728A|2008-03-03|2009-09-17|Takenaka Komuten Co Ltd|Vibration control device|
    KR20120027335A|2009-05-11|2012-03-21|이명호|Vertical wind power gernerator|
    WO2012117272A2|2011-01-20|2012-09-07|William Lange|Method and apparatus for extracting fluid motion energy|
    US6283711B1|2000-03-13|2001-09-04|John L. Borg|Modified savonius rotor|
    DE10021850A1|2000-05-05|2001-11-08|Olaf Frommann|Adaptive profile for wind energy rotor has curvature along blade longitudinal axis that has aerodynamic profile that can be varied as function of blade radius by elastically deforming rear edge|
    DE102004060275A1|2004-12-15|2006-06-29|Gangolf Jobb|Material-saving flow converter and its use as a wave power plant|
    DK176352B1|2005-12-20|2007-09-10|Lm Glasfiber As|Profile series for blade for wind turbines|
    BRPI0924514A2|2009-03-26|2016-03-01|Nheolis Soc Par Actions Simplifiee|rotor for power generator from a fluid flow, in particular for wind turbines and power generation device|
    DE202009010621U1|2009-08-05|2009-10-08|Debus, Martin|Small wind turbine|
    US20110064574A1|2009-09-16|2011-03-17|Lange William G|Method and apparatus for extracting fluid motion energy|
    KR101068443B1|2009-12-24|2011-09-28|황지선|Wind power rotors|
    WO2011141444A2|2010-05-10|2011-11-17|Technische Universität Darmstadt|Invention relating to rotor blades in particular for wind power installations|
    FR2968725A1|2010-12-08|2012-06-15|Peugeot Citroen Automobiles Sa|Savonius rotor type wind power device i.e. wind turbine, for mounting on roof of e.g. motor vehicle, to convert wind into electrical energy, has rotary shaft arranged to vary in height from folded position to deployed position|
    CN102062050A|2011-01-26|2011-05-18|杭州广联新能源科技有限公司|Maglev Savonius rotor wind power generator blade|US10487799B2|2015-12-18|2019-11-26|Dan Pendergrass|Pressure and vacuum assisted vertical axis wind turbines|
    WO2018054365A1|2016-09-24|2018-03-29|Beigene, Ltd.|NOVEL 5 or 8-SUBSTITUTED IMIDAZO [1, 5-a] PYRIDINES AS SELECTIVE INHIBITORS OF INDOLEAMINE AND/OR TRYPTOPHANE 2, 3-DIOXYGENASES|
    GB2566804B|2017-08-07|2020-05-06|Spinetic Energy Ltd|A rotor for a vertical axis wind turbine|
    US10724502B2|2018-05-22|2020-07-28|Creating Moore, Llc|Vertical axis wind turbine apparatus and system|
    法律状态:
    2016-03-21| PLFP| Fee payment|Year of fee payment: 3 |
    2017-03-22| PLFP| Fee payment|Year of fee payment: 4 |
    2018-03-23| PLFP| Fee payment|Year of fee payment: 5 |
    2019-03-22| PLFP| Fee payment|Year of fee payment: 6 |
    2020-03-19| PLFP| Fee payment|Year of fee payment: 7 |
    2021-03-16| PLFP| Fee payment|Year of fee payment: 8 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1452798|2014-03-31|
    FR1452798A|FR3019237B1|2014-03-31|2014-03-31|ROTOR TYPE SAVONIUS|FR1452798A| FR3019237B1|2014-03-31|2014-03-31|ROTOR TYPE SAVONIUS|
    US15/300,169| US10400747B2|2014-03-31|2015-03-31|Savonius rotor|
    DK15721765.4T| DK3126668T3|2014-03-31|2015-03-31|SAVONIUS ROTOR|
    CN201580028080.4A| CN106460771B|2014-03-31|2015-03-31|Savonius rotor|
    PT157217654T| PT3126668T|2014-03-31|2015-03-31|Savonius rotor|
    PCT/FR2015/050837| WO2015150697A1|2014-03-31|2015-03-31|Savonius rotor|
    EP15721765.4A| EP3126668B1|2014-03-31|2015-03-31|Savonius rotor|
    ES15721765T| ES2877515T3|2014-03-31|2015-03-31|Savonius rotor|
    CA2980979A| CA2980979A1|2014-03-31|2015-03-31|Savonius rotor|
    PL15721765T| PL3126668T3|2014-03-31|2015-03-31|Savonius rotor|
    HRP20210956TT| HRP20210956T1|2014-03-31|2021-06-15|Savonius rotor|
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