EA012658B1 - Method for converting wind stream energy into rotational movement using fluid medium energy and a propulsion device for carrying out said method - Google Patents

Abstract

The set of inventions relates to methods for converting wind stream energy into a rotational movement and to propulsion devices for carrying out said methods. Said invention is aimed at enhancing conversion efficiency using fluid medium energy. The method for converting a fluid medium energy into a rotation movement consists in producing a fluid medium action on at least one blade which is cantileverly arranged with respect to the axis of rotation thereof for generating the cantilever rotation movement hingedly connected to a power shaft. A propulsion device for converting a fluid medium energy into a rotation movement comprises: at least one blade provided with a flexible rear section, connected by the cantilever with a joint; the cantilever oscillation drive mounted on a platform rotatably to a base; the power shaft arranged in a perpendicular position with respect to the cantilever oscillation movement and connected with the cantilever by a joint.

Description

So, from the description of the invention to the patent of the Russian Federation No. 2246029 C1, IPC Ρ03Ό 1/00, published date 10.02.2005, a method is known for converting the energy of a fluid medium, in particular wind, into rotary motion by ensuring the action of a fluid medium at least one blade, cantilever mounted relative to the axis of its rotation. The disadvantage of this method is the dependence of the implementation of the method from the presence and speed of the wind.

From the description of this invention, a device is known for converting energy of a fluid into rotational motion, comprising at least one blade fixed by means of a cantilever on a hinge connected to a support, rotatable about the axis of said hinge. The disadvantage of this device is its equipment systems, providing changes in the angle of attack of the flow incident on the blade, as well as the need for wind.

In the prior art, methods and devices are known for converting an oscillatory motion into a rotary motion (see, for example, CI 2154175, CI 2150625, KP 2267041), but they do not use the energy of the surrounding fluid in the conversion process.

The technical task to be solved is to increase the efficiency of the transformation of the vibrational motion into rotational due to the use of the energy of the surrounding fluid, and in the absence of an incident flow.

The essence of the group of inventions is as follows.

A method for converting an oscillatory motion into a rotary motion is provided by creating oscillatory motions of at least one blade that is cantilever-mounted with respect to the axis of rotation for generating a rotary motion of the arm pivotally connected to the power take-off shaft.

A propulsion unit for converting an oscillatory motion into a rotary motion comprises at least one blade with a flexible rear part connected by means of a console with a hinge;

the drive of the reciprocating rotational movement of the console, mounted on a platform rotatable relative to the base;

the power take-off shaft, located mainly perpendicular to the geometric axis of the reciprocating rotation of the console and connected by means of a hinge with the console.

The propeller is also characterized by the fact that it is equipped with two blades, the console is made in the form of a rocker arm connected to the hinge, and the blades are connected to the rocker arm asymmetrically about the axis of rotation.

In addition, the end portion of the console is made elastic, and a load is mounted on the end portion of the console.

In this case, the blade contains a rigid front part having a drop-shaped profile in cross section, and the flexible rear part of the blade is made of adjacent feathers.

Each pen contains leading and trailing edges, the trailing edge is located closer to the hinge than the leading edge, while the leading edge is located above the trailing edge of the next feather, and the trailing edge is below the leading edge of the previous feather, while the feather can be made with an 8-shaped cross section .

The group of inventions is illustrated by drawings.

FIG. 1 shows the propulsor when viewed from the front.

FIG. 2 shows the propulsion device as viewed from above.

FIG. 3 shows the detail A in FIG. 2

FIG. 4 shows a section BB in FIG. 3

FIG. 5 shows view B in FIG. four.

FIG. 6 shows a section of YYY in FIG. 3

FIG. 7 shows a section dd in fig. five.

FIG. 8 shows section EE of FIG. five.

FIG. 9 shows a section of an Ж-Ж in FIG. five.

FIG. 10 shows the section AND-AND in FIG. five.

FIG. 11 shows a section KK in FIG. 2

Implementation of a group of inventions.

The method of converting an oscillatory motion into a rotational one is based on bringing into rotation a cantilever-mounted relative to the axis 6 of rotation of at least one blade 3 by generating vortices when the blade oscillates in a plane passing through its axis of rotation 6.

For the generation of vortices and rotation of the rocker arm, the propeller includes a drive 8 of return rotation, mounted on platform 1, rotatable relative to the base A, console 2, made in the form of a rocker arm, equipped with at least one blade 3 with a flexible rear part 4. Drive 8 kinematically connected with the rocker arm (console 2), which is connected to platform 1 by means of a hinge 5. The rocker arm can be equipped with only one blade 3. If there are two blades 3 on the rocker arm, they are located on opposite sides of the rocker arms and is generally symmetrically about the hinge 5 (FIG. 1). The hinge 5 has an axis of rotation 6. The power take-off shaft 7 is located predominantly perpendicular to the geometrical axis of the reciprocating rotational motion of the console 2 and is connected to the console 2 by means of a hinge 5 (Fig. 1 and 2).

The actuator 8, for example, an electric motor with a gearbox 9, is connected to the mechanism 10 connected to the console 2. As the mechanism 10 can be used pneumatic actuator or crank, rocker, cam and other mechanisms (Fig. 1).

The rocker arm (console 2) can be made as a single longitudinal element, or composite, containing the central part 11 and the end parts 12 connected to it, which can be made elastic, connect with blades 3 and / or with weights 13 (Fig. 2, 3) . In this case, the central 11 and end 12 parts can be made of a complex structure containing such power elements as spars 14, ribs (not shown in the figures), connection nodes with blades 3. At the same time, the spars 14 of the central 11 and / or end 12 parts are given a teardrop-shaped a profile similar to aerodynamic profiles, in the tail part of which the attachment points for blades 3 are located (Fig. 4).

Flexible rear part 4 adjacent to at least one blade 3, made in the form of a pen 15 with a tip 16, front 17 and rear 18 edges (Fig. 5). The front edge 17 is located farther from the hinge 5 than the trailing edge 18. In section along the yoke, the front edge 17 is located above the trailing edge of the next feather 15, and the trailing edge 18 is below the leading edge of the previous feather 15 (Fig. 6). The pen 15 in cross section along the span of the rocker arm 2 is made with a profile with a 3-shaped midline 19, with an increase in the concavity of the 3-shaped midline 19 in the middle of the span of the blade 3 and a decrease as it approaches the tip 16 of the feather 15 (Fig. 7-10) the angle α between the plane perpendicular to the axis 7 of rotation of the rocker arm 2, and the chord 20 connecting the front 17 and rear 18 edges of the profile.

It is also possible to perform a flexible rear part of the blade in the form of one whole flexible covering.

The mover works as follows.

The actuator 8, by means of an electric motor, a gearbox 9 and a mechanism 10 (crank, rocker, etc.) connected to the beam, rotates the arm (console 2) around the axis of rotation 6 of the hinge 5 in a vertical plane, usually passing through the shaft axis 7 power takeoff (Fig. 1). On the moving part of the propulsion unit (Fig. 11), due to the elasticity of the end part 12 of the rocker arm 2, the flexible rear part 4 of the blade 3 bends downward (Fig. 12), throwing the air backwards and generates vortices, at the descent of which a force occurs that creates a torque about the axis shaft 7 (Fig. 13). When the mechanism 10 reaches the top dead center, the beam starts to move in the opposite direction, completing the cycle of the swing movement. Due to the profiling of the spars 14 of the rocker arms and the flexible rear part 4 of the blade 3, when the movement is moving, circulation of the fluid occurs, the attached masses of the fluid increase the forces that arise.

The implementation of the flexible rear part 4 of the blade 3 is elastic, its implementation in the form of a feather 15 in cross section along the rocker arm with a 3-shaped centerline line 19 of the profile (FIG. 7-10) contributes to an increase in the efficiency of the swing. The presence of loads 13 on the end sections 12 of the blades 3 (Fig. 2) increases the amplitude of the mach and reduces the overload in the upper and lower points of the mechanism 10 and in the side members 14.

Thus, due to oscillations about the axis 6, the actuator 8 of the console-mounted blades 3 generates vortices that ensure the rotation of the console-mounted blades 3 (for example, by the rocker arm) relative to the shaft 7.

The manufactured propulsion model with a single console area of 130 cm ² , a console span of 22 cm, an average chord of 12 cm, an engine power consumption of 1.8 W and a consumed power of 1.6 W for the oscillation frequency provided for a oscillation frequency of 120-180 1 / min weighing 45 g to 60-80 rpm

The degree of disclosure of the group of inventions in the description is sufficient to create a mover that implements the method.

Claims (9)

CLAIM 1. A method of converting an oscillatory motion into a rotational one, which consists in creating oscillatory motions of at least one blade (3) that is cantilevered relative to the axis of rotation (6) to generate a rotational motion of the console (2) pivotally connected to the power shaft ( 7). 2. A propeller for converting an oscillatory motion into a rotational motion, characterized in that it contains at least one blade (3) with a flexible rear part connected by means of a console (2) with a hinge (6); the drive of the reciprocating rotary movement of the console (2) mounted on a rotary relative to the base (A) platform (1); the power take-off shaft (7), which is located predominantly perpendicular to the geometric axis of the reciprocating-rotating movement of the console (2) and connected by means of a hinge (6) to the console (2). 3. The propeller according to claim 2, characterized in that it is equipped with two blades (3), the console (2) is made in the form of a rocker arm connected to the hinge (6), and the blades (3) are connected to the rocker arm symmetrically relative to the axis of rotation. 4. The propeller according to claim 2, characterized in that the end portion of the console (2) is made elastic. 5. The propeller according to claim 4, characterized in that a load is mounted on the end portion of the console (2). 6. The propeller according to claim 2, characterized in that the blade (3) contains a rigid front part having a teardrop-shaped profile in cross section. 7. The propeller according to claim 2, characterized in that the flexible rear part of the blade (3) is made of adjacent feathers (15). 8. Mover according to claim 7, characterized in that each feather (15) contains front (17) and rear (18) edges, the rear edge (18) is located closer to the hinge (6) than the front edge (17), with This front edge (17) is located above the rear edge (18) of the next pen (15), and the rear edge (18) below the front edge (17) of the previous pen (15). 9. The propeller according to claim 7, characterized in that each feather (15) is made with an 8-shaped cross-section. - 3 012658