MACHINE HAVING A FLETTNER ROTOR AND WORKING METHOD FOR THE MACHINE

Abstract

The invention relates to a device, having at least one rotor, which has an axis of symmetry with respect to which the rotor is rotationally symmetrical and which is rotationally motor-driven about the axis of symmetry of the rotor and which is mounted for rotation about an axis of rotation arranged transverse to the axis of symmetry such that, in the event of incident flow of a fluid, the rotor is rotationally driven in a rotational motion about the axis of rotation by means of a force acting transversely to the fluid flow. Said device enables the production of a rotational motion when the rotor is translationally driven in the fluid relative to the fluid in the longitudinal direction of the axis of rotation.

Claims

1. Device, having at least one rotor with an axis of symmetry to which the rotor is rotationally symmetrical, which is driven about its axis of symmetry by means of a motor, which is mounted rotatably about an axis of rotation which is transverse to the axis of symmetry, so that the rotor, in the event of an incident flow with a fluid, is driven in a rotational movement about the axis of rotation by a force acting transversely to the fluid flow, and which is translational driven in the fluid relative to the fluid in the longitudinal direction of the axis of rotation.

2. Device according to claim 1 characterized in that the longitudinal direction of the axis of rotation in the fluid rotates about at least one third axis arranged perpendicular to the axis of rotation in space.

3. Device according to claim 2 characterized in that the longitudinal direction of the axis of rotation in the fluid rotates about a fixed axis.

Description

DESCRIPTION OF THE DRAWINGS

[0010] The invention is described below by means of exemplary embodiments under with reference to the drawings as an example without limiting the general idea of invention.

[0011] FIG. 1 shows a device according to the invention

[0012] FIG. 2 shows the device according to FIG. 1.

[0013] FIG. 3 shows a variant of the device according to FIG. 1 in top view.

[0014] FIG. 4 shows another device according to the invention.

[0015] FIG. 1 shows a device 1 according to the invention. The device 1 has an e.g. frame-like carrier 10 which rotatably carries a drive shaft 20. The drive shaft 20 is driven by a motor 11 mounted on the carrier 10. A bogie 25 is attached to the drive shaft 20, said bogie being accordingly driven by the motor 11. At each of the two radially outward facing end areas of the bogie 25 there is a so-called second bearing 30 which allows rotation of rods 35 in a radial plane relative to the drive shaft 20. At the rods 35 there is respectively one rotor 40 spaced from the second axis 31. The rotor 40 is rotationally symmetrical to its longitudinal axis 41, which is also called first axis 41. The rotors 40 are rotatably driven about their respective longitudinal axes, all with the same direction of rotation. The longitudinal axis 41 is angled relative to the radial direction with respect to the second axis 31 (=rotation axis) preferably as shown in the example by a small angle α (0≤α≤15°, but preferably lies in a radial plane relative to the second axis, i.e. in the same plane as the radial axes 36, and preferably also in a plane radial to the drive shaft 20.

[0016] When the motor 11 is started up, it drives the rotation of the bogie 25 and with it the rotors 40 that rotate about their respective longitudinal axis, which consequently also rotate with the drive shaft about the drive axis 21. As a result, the rotors 40 are subjected to the flow in the fluid surrounding the device, for example the air, because they are displaced in the longitudinal direction of the axis of rotation 31, i.e. they are subject to a translation in the fluid. At the same time, i.e. during the translation of the second bearings 30, the rotation axes 31 are also rotated about an axis running parallel to the drive axis 21 through the bearing 30, by means of the restricted guidance of the bogie in the example. As a result, the direction of the axes of rotation relative to the carrier changes. The incident flow of the rotors 40 rotating about their longitudinal axis causes a transverse force known as the Magnus effect. This transverse force acts as torque on the rods 35 and sets them into rotation about the rotation axis 31 (=second axis). The corresponding drive power can be used in almost any way, for example a generator can be arranged in the bearing.

[0017] FIGS. 2 and 3 show the same device but the bogie is shown slightly rotated about the drive axis. The description of FIG. 1 can therefore also be read on FIGS. 2 and 3. In FIG. 3, the rotation axis 31 is tilted by a small angle ø(0≤ø≤15°) against the tangential 22 of the circular path of bearing 30. The two axes 36 and 41 coincide when viewed from above.

[0018] FIG. 4 shows another embodiment of the invention. This variant has a four-winged bogie 25 instead of a two-winged bogie 25 in FIGS. 1 to 3. Further, the description of FIG. 1 can also be read on FIG. 4. Of course 1 single-winged bogies are also possible. The number of rotors can also be varied as required (at least 1 rotor), wherein the distances between the rotors should be sufficient. In contrast to FIGS. 1 to 4, also several rotors 40 can be attached to one rod 35, whereby the term rod is used here only as a synonym for “carrier” in order to avoid confusion with carrier 10. In addition, the invention was explained here only on the basis of a circular path of the second bearings 30. Of course, other path curves are also possible. Another improvement is that the carrier 25 can be profiled or cladded as aerodynamically as possible. In particular as a preferably symmetrical NACA profile.

REFERENCE CHARACTER LIST

[0019] 1 device [0020] 10 carrier [0021] 11 motor [0022] 20 drive shaft [0023] 21 drive axis [0024] 22 tangent [0025] 25 bogie [0026] 30 second bearing/radial bearing [0027] 31 second axis (=axis of rotation) [0028] 40 rotor [0029] 41 longitudinal axis of the rotor/symmetry axis of the rotor/first axis [0030] α angle [0031] ø angle