ROTATIONAL FORCE GENERATOR REVOLVING AND ROTATING ACCORDING TO FLOW OF FLUID

Abstract

The present invention relates to a vertical rotating shaft type rotational force generator that is capable of allowing a plurality of blades rotating around blade rotation shafts and simultaneously revolving around blade revolution shafts, when receiving a pressure caused by the flow of a fluid, to provide the rotational forces generated therefrom for the blade revolution shafts. Even if no separate left and right direction control power device exists, the blade revolution shafts automatically move toward positions where rotational forces generated therein are maximized, and rotation phase angles and revolution phase angles of a plurality of blades effectively interlock with each other, so that even though the blades are located at any revolution phases, they provide the rotational forces produced to the maximum according to revolution phase always in the same rotation direction for the blade revolution shafts. Further, in the case where the flow velocity and pressure of a fluid are excessively increased due to strong winds or floods, even if no separate upward and downward direction control power device exists, the blade revolution shafts are automatically tilted in a direction where the overturning moment generated in the support and foundation of the rotational force generator and the rotating torque generated in the blade revolution shafts of blades are drastically decreased, so that the rotational force generator is prevented from turning over or collapsing due to the excessive dynamic load of the fluid, and further, the rotational force generator including each blade revolution shaft is prevented from being damaged due to excessive rotational speeds, thereby optimizing the efficiency and safety thereof.

Claims

1. A rotational force generator revolving and rotating according to the flow of a fluid, comprising: blade revolution shaft rotating mechanisms each having two or more blades spaced apart from one another at intervals of the same revolution phase angle to rotate around blade rotation shafts and simultaneously revolve around a blade revolution shaft, if a pressure is received from the flow of the fluid, to apply rotational forces to the blade revolution shaft; one or more left and right rotating mechanism coupling units for combining one or more blade revolution shaft rotating mechanisms provided on each of left and right sides of the central portion thereof; and a rotating mechanism coupling unit support for supporting the left and right rotating mechanism coupling units and serving as a revolution shaft to allow the left and right rotating mechanism coupling units to perform revolutions to left and right sides at given intervals according to changes in the flowing directions of the fluid, wherein the rotating mechanism coupling unit support comprises: a rotating mechanism coupling unit revolution shaft serving as the revolution shaft adapted to revolve the left and right rotating mechanism coupling units therearound; rotating mechanism coupling unit revolution arms for supportingly connecting the left and right rotating mechanism coupling units to the rotating mechanism coupling unit revolution shaft in such a way as to be symmetrical to each other on left and right sides; and a rotational force generator base for supporting the rotating mechanism coupling unit revolution shaft and serving as a shaft support, the left and right rotating mechanism coupling units comprise: left and right rotating mechanism coupling arms for supportingly connecting the blade revolution shaft rotating mechanisms located on the left and right sides from the central portion of the rotational force generator to each other in a horizontal direction; and blade revolution shaft supports located on both sides of the left and right rotating mechanism coupling arms at given intervals in such a way as to fit the blade revolution shafts thereto, and each blade revolution shaft rotating mechanism comprises: the blade revolution shaft fitted to the corresponding blade revolution shaft support and extending in a vertical direction; blade revolution arms extending around the blade revolution shaft at the same revolution distances and phase intervals as each other; blade rotation shaft supports disposed on the ends of the blade revolution arms; blade rotation shafts fitted to the blade rotation shaft supports in directions parallel to the blade revolution shaft; and a revolution and rotation gear shifting interlocker for shifting the rotating speed of the blade revolution shaft to allow the blade rotation shafts to rotate at an angular velocity 0.5 times higher than the angular velocity of the blade revolution shaft in the opposite direction to the rotating direction of the blade revolution shaft, whereby each blade, which has two thin curved bodies with almost the same shape and area in such a way as to be coupled to have line symmetry around the corresponding blade rotation shaft, is fixedly coupled to the blade rotation shaft, and in a relation between the revolution phase angle and the rotation phase angle of each blade, in the case of one revolution phase, in two revolution phases at which the horizontal direction where the left and right rotating mechanism coupling arms extend and the revolution orbit of the corresponding blade rotation shaft cross each other, the direction vertical to the surface of the blade is vertical to the direction where the left and right rotating mechanism coupling arms extend, and in the case of the other revolution phase, the direction vertical to the surface of the blade is parallel to the direction where the left and right rotating mechanism coupling arms extend, so that even though the flowing directions of the fluid are changed frequently, since the left and right rotating mechanism coupling units pushedly rotate by the flow of the fluid and move toward the most downward directions of the flow of the fluid, the rotating mechanism coupling unit revolution arms are always toward directions parallel to the flow of the fluid, and as the left and right rotating mechanism coupling units are toward the directions vertical to the flow of the fluid, each blade has the rotation phase angle at which the rotational force is produced to the maximum according to the revolution phase.

2. The rotational force generator according to claim 1, wherein the left and right rotating mechanism coupling units comprise: two or more left and right rotating mechanism coupling arms disposed along the vertical direction; a left and right rotating mechanism coupling column adapted to vertically connect and support the central portion of each the left and right rotating mechanism coupling arm; and a rotating mechanism coupling unit rotating horizontal shaft disposed on the left and right rotating mechanism coupling column and extending in a horizontal direction, whereby one point of the left and right rotating mechanism coupling column located at a higher position than the center of gravity in the vertical direction of the left and right rotating mechanism coupling units is hinge-coupled rotatable in place to the ends of the left and right rotating mechanism coupling unit revolution arms through the rotating mechanism coupling unit rotating horizontal shaft, and if the flow velocity of the fluid is increased, the inclinations of the left and right rotating mechanism coupling units become increased, so that unlike that the left and right rotating mechanism coupling units are kept in the vertical states, the dynamic load of the fluid applied to the rotational force generator is drastically decreased.

3. The rotational force generator according to claim 1, wherein the blade revolution shaft and the blade rotation shafts of each blade revolution shaft rotating mechanism have two or more crank mechanisms having the same size spaced apart from one another at the same rotating phase intervals on the ends thereof in such a way as to be fixedly coupled to crank shafts in upward and downward directions; two or more radial crank pin connection arms extending radially toward the blade rotation shafts around the crank pin of the blade revolution shaft are hinge-coupled between the crank pin of the blade revolution shaft and the crank pins of the blade rotation shafts, which have the same rotation phase angle, to allow the crank pins to interlock with each other to revolve around the respective crank shafts at the same phase angle and angular velocity; the blade revolution shaft support has a revolution and rotation gear shifting planetary gear having a sun gear and planetary gears fixedly coupled therearound to allow the rotation angular velocity of the blade revolution shaft to become 0.5 times higher than the revolution angular velocity of the blade revolution arms; and the blade revolution shaft is divided into a revolution arm separation blade revolution shaft fixedly coupled to the crank mechanism and a revolution arm coupling blade revolution shaft as a cylindrical member surrounding the revolution arm separation blade revolution shaft in such a way as to be coupled to the blade revolution arms, whereby vibrations and inertial resistance caused by eccentric load are not generated in the rotations of the crank mechanisms and even if the lengths of the blade revolution arms extend to increase the rotational force, no additional friction energy loss is generated.

4. The rotational force generator according to claim 2, wherein the rotating mechanism coupling unit revolution shaft 11 has the shape of a cylinder hinge-coupled rotatable to left and right sides to an intermediate portion of a vertical structure such as a streetlight or utility pole; the left and right rotating mechanism coupling units have a bird head-shaped front portion and a bird tail-shaped back portion; and below the rotating mechanism coupling unit rotating horizontal shaft, the left rotating mechanism coupling arm and the right rotating mechanism coupling arm are separated from each other in such a way as to be easily coupled to a vertical structure installed on a linear site such as a road, railway, and the like, so that the left and right rotating mechanism coupling units have the shape of a bird flapping its wings up and down to provide good outer beauty.

5. The rotational force generator according to claim 1, wherein the central portion of the left and right rotating mechanism coupling units is separated into a left rotating mechanism coupling unit and a right rotating mechanism coupling unit that are hinge-coupled to perform relative movements through which left and right internal angles with the central portion as a vertex are increased and decreased, the left rotating mechanism coupling unit and the right rotating mechanism coupling unit being hinge-coupled to the rotating mechanism coupling unit revolution arms different from each other, and the rotating mechanism coupling unit revolution arms being hinge-coupled to the rotating mechanism coupling unit revolution shaft; and an extension spring or long axis turnbuckle having a distance adjusting function is disposed between the central portion of the left and right rotating mechanism coupling units and the rotating mechanism coupling unit revolution shaft, whereby even if the flows of the fluid are changed frequently, the left and right rotating mechanism coupling units rotate around the rotating mechanism coupling unit revolution shaft to face the flow of the fluid on the front surfaces thereof, and if the flow velocity and pressure of the fluid are increased and decreased, the internal angles with the central portion of the left and right rotating mechanism coupling units as the vertex are changed to allow the dynamic load to be buffered.

6. The rotational force generator according to claim 1, wherein each blade has a straight line shape where no concave and convex portions are formed on the horizontal section thereof and a plurality of concave and convex portions or protrusions formed on the vertical section thereof, so that the fluid colliding against the blade does not scatter in every direction and flows along horizontal trenches formed on the surface of the blade.

Description

BRIEF DESCRIPTION OF DRAWINGS

[0061] FIG. 1a is a representative figure of Patent literature 1, FIG. 1b is a representative figure of Patent literature 2, FIG. 1c is a representative figure of Patent literature 3, and FIG. 1d is a representative figure of Patent literature 4.

[0062] FIG. 2 is a perspective view showing a rotational force generator according to an embodiment of the present invention in which two blade revolution shaft rotating mechanisms each having two blades are coupled symmetrically to each other to transmit rotational forces through a plurality of spur gears.

[0063] FIG. 3 is a top view showing a process in which rotation and revolution of the blades interact with each other and the rotational forces are transmitted between blade revolution shaft support gears and blade rotation shaft gears in the embodiment of FIG. 2.

[0064] FIG. 4 is a top view showing a process in which a left blade revolution shaft gear and a right blade revolution shaft gear interact with each other and a method and order for transmitting the rotational force to a central generator in the embodiment of FIG. 2.

[0065] FIG. 5 is a perspective view showing a rotational force generator according to another embodiment of the present invention in which two blade revolution shaft rotating mechanisms each having three blades are coupled symmetrically to each other to transmit rotational forces through gear combinations and chain belts.

[0066] FIG. 6 is an enlarged perspective view showing a portion where the rotational forces are transmitted by means of the gear combinations and chain belts to explain an operating principle in the embodiment of FIG. 5.

[0067] FIG. 7 is a schematic top view showing the rotational directions in the revolution and rotation of the blades and the process of transmitting the rotational forces in the embodiment of FIG. 5.

[0068] FIGS. 8 and 9 are concept views showing the dynamic relation between the revolution and rotation phase angles of the blades and the torque generated on the blade revolution shaft in the embodiment of FIG. 5.

[0069] FIG. 10 is a perspective view showing a rotational force generator according to yet another embodiment of the present invention in which left and right rotating mechanism coupling units to which rotational forces are transmitted by means of bevel gears rotate up and down around a rotating mechanism coupling unit rotating horizontal shaft.

[0070] FIG. 11 is a central cross-section side view showing an operating principle where the left and right rotating mechanism coupling units are inclined forward by means of the pressure generated in the flowing direction of a fluid in the embodiment of FIG. 10.

[0071] FIG. 12 is a concept view showing dynamic relations among the flow velocity of the fluid, the inclinations of the left and right rotating mechanism coupling units, and the overturning moment of a rotating mechanism coupling unit support in the embodiment of FIG. 11.

[0072] FIG. 13 is a perspective view showing a rotational force generator according to still another embodiment of the present invention in which two blade revolution shaft rotating mechanisms each having four blades are coupled to each other with planar symmetry and rotate up and down around a rotating mechanism coupling unit rotating horizontal shaft to transmit rotational forces by means of a plurality of crank mechanisms.

[0073] FIG. 14 is a side view showing an operating principle where the left and right rotating mechanism coupling units are inclined backward by means of the pressure generated in the flowing direction of a fluid in the embodiment of FIG. 13.

[0074] FIG. 15 is a perspective view showing a process of transmitting the rotational forces from the blade revolution shaft to the four blade rotation shafts by means of two radial crank pin connection arms and five crank mechanisms that have point symmetry and revolve around the blade revolution shaft.

[0075] FIG. 16 is a perspective view showing an operating principle of a revolution and rotation gear shifting planetary gear for shifting rotation angular velocity of the blade revolution shaft and the blade rotation shaft to become 0.5 times higher than the revolution angular velocity of the blade and transferring the shifted angular velocity.

[0076] FIGS. 17a to 17c are perspective views showing the left and right rotating mechanism coupling units as shown in FIG. 5 are installed on a vertical structure such as a streetlight or utility pole.

[0077] FIG. 18 is a perspective view showing the rotational force generators of the present invention installed along the center and side of the road, wherein four blade revolution shaft rotating mechanisms are disposed in every direction and rotate in up, down, left, and right directions like a swing according to the velocity and direction of wind.

[0078] FIG. 19 is a perspective view showing a rotational force generator according to yet still another embodiment of the present invention in which a plurality of blade revolution shaft rotating mechanisms are disposed on the left and right sides of the central portion thereof to have triangular planar symmetry and a horizontal span between the left and right rotating mechanism coupling units is increased or decreased.

[0079] FIG. 20 is a perspective view showing the reduction of the horizontal span between the left and right rotating mechanism coupling units and the operating principle thereof in the embodiment of FIG. 19.

[0080] FIGS. 21a to 21d are perspective views showing various embodiments of the shapes of the gear combinations and chain belts for transmitting the rotational forces between one blade revolution shaft and three blade rotation shafts and the operating principle thereof.

BEST MODE FOR INVENTION

[0081] Hereinafter, the present invention will be explained in detail with reference to the attached drawings. However, for reference numerals, with respect to the same elements, even though they may be displayed in different drawings, such elements use same reference numerals as much as possible, and detailed description on known elements or functions will be omitted.

[0082] As shown in FIGS. 2, 5, 10, 13, 17a-17c, 18, and 19, a rotational force generator according to the present invention includes: blade revolution shaft rotating mechanisms 3 each having two or more blades 35 spaced apart from one another at intervals of the same revolution phase angle to rotate around blade rotation shafts 34 and simultaneously revolve around a blade revolution shaft 31, if a pressure is received from the flow of the fluid, to apply rotational forces to the blade revolution shaft 31; one or more left and right rotating mechanism coupling units 2 disposed on left and right sides with respect to the center thereof; and a rotating mechanism coupling unit support 1 for supporting the left and right rotating mechanism coupling units 2 and serving as a revolution shaft to allow the left and right rotating mechanism coupling units 2 to be pushed by the pressure of the fluid, turn in downward directions, and have a function of a rudder, even if the flowing directions of the fluid are frequently varied. The rotational force generator according to the present invention will be explained below, based on FIGS. 2 and 5 showing the basic configuration of the present invention.

<Configurations of Parts>

[0083] (1) The rotational force generator according to the present invention largely includes the left and right rotating mechanism coupling units 2 and the rotating mechanism coupling unit support 1, and further, one or more blade revolution shaft rotating mechanisms 3 having the same size and shape are located on the left and right sides with respect to a vertical central line of the left and right rotating mechanism coupling units 2.

[0084] (2) The rotating mechanism coupling unit support 1 includes: a rotating mechanism coupling unit revolution shaft 11 serving as a revolution shaft adapted to revolve the left and right rotating mechanism coupling units 2 therearound; rotating mechanism coupling unit revolution arms 12 for supportingly connecting the left and right rotating mechanism coupling units 2 to the rotating mechanism coupling unit revolution shaft 11 in such a way as to be symmetrical to each other on left and right sides; and a rotational force generator base 13 for supporting the rotating mechanism coupling unit revolution shaft 11.

[0085] (3) The left and right rotating mechanism coupling units 2 include left and right rotating mechanism coupling arms 21 for supportingly connecting the one or more blade revolution shaft rotating mechanisms 3 located on the left and right sides from the central portion of the rotational force generator to each other in a horizontal direction; and blade revolution shaft supports 22 located on both sides of the left and right rotating mechanism coupling arms at given intervals in such a way as to fit the blade revolution shafts 31 thereto. In FIG. 2, however, the blade revolution shaft 31 is not provided to maximize the left and right areas of the blades 35, and each blade rotation shaft 34 is divided into a revolution arm coupling blade rotation shaft 341 integrated with the blade revolution arm 32 and a blade coupling blade rotation shaft 342 that is cylindrical to surround the blade revolution shaft 31 and coupled to the corresponding blade 35 in such a way as to rotate together with the corresponding blade 35.

[0086] In this case, desirably, left and right blade revolution phase interlockers 24 are disposed on the left and right rotating mechanism coupling arms 21 to allow the blade revolution arms 32 of the blade revolution shaft rotating mechanisms 3 to interlock with each other and rotate with planar symmetry, and each blade revolution phase interlocker 25 includes a plurality of spur gears, bevel gears, or crank mechanisms. In FIG. 5, however, if one blade revolution shaft rotating mechanism 3 has three or more blades 35, revolution phase differences among the blades 35 of the left and right blade revolution shaft rotating mechanisms 3 are not big, and accordingly, it is desirable that the left and right blade revolution phase interlockers 24 be not provided.

[0087] Further, in this case, if the left and right rotating mechanism coupling units 2 are provided with two or more left and right rotation mechanism coupling arms 21 up and down along the vertical direction, a left and right rotation mechanism coupling column 23 is additionally provided to vertically connect and support the central portion of each left and right rotation mechanism combination arm 21.

[0088] (4) Each blade revolution shaft rotating mechanism 3 includes: the blade revolution shaft 31 fitted to the corresponding blade revolution shaft support 22 and extending in a vertical direction; the two or more blade revolution arms 32 extending radially around the blade revolution shaft 31 at the same revolution distance and phase interval as each other; blade rotation shaft supports 33 disposed on the ends of the blade revolution arms 32; blade rotation shafts 34 fitted to the blade rotation shaft supports 33 and extending in vertical directions; and a revolution and rotation gear shifting interlocker 36 for shifting the rotational force of the blade revolution shaft 31 and transmitting the shifted rotational force to the blade rotation shafts 34 so that the blade rotation shafts 34 rotate at an angular velocity 0.5 times higher than the blade revolution shaft 31 in the opposite direction to the rotational direction of the blade revolution shaft 31.

[0089] In this case, the blade revolution shaft 31 is divided into a revolution arm coupling blade revolution shaft 311 rotating at the same angular velocity as the blade revolution arms 32 and a revolution arm separation blade revolution shaft 312 rotating at a different angular velocity from the blade revolution arms 32.

[0090] (5) As shown in FIGS. 3 and 6, the revolution and rotational gear shifting interlocker 36 includes: a blade revolution shaft support gear 51 having the shape of an external teeth protruding from the blade revolution shaft support 22 toward the blade revolution shaft 31 in such a way as to surround the blade revolution shaft 31; a blade rotation shaft gear 53 fixedly coupled to the corresponding blade rotation shaft 34; and a rotational force transmission part 6 disposed between the blade revolution shaft support gear 51 and the blade rotation shaft gear 53 to perform the gear shifting of the rotational force and the transmission of the shifted rotational force.

[0091] (6) Each blade 35, which has two thin curved bodies with almost the same shape and area in such a way as to be coupled to have line symmetry around the corresponding blade rotation shaft 34, is fixedly coupled to the blade rotation shaft 34.

[0092] (7) As shown in FIG. 7, referring to a relation between the revolution phase angle and the rotation phase angle of each blade 35, in two revolution phases at which the horizontal direction where the left and right rotating mechanism coupling arms 21 extend and the revolution orbit of the corresponding blade rotation shaft 34 cross each other, in the case of one revolution phase, the horizontal direction where the left and right rotating mechanism coupling arms 21 extend is parallel with the horizontal direction along which the left and right edges of each blade 35 are connected to each other, and in the case of the other revolution phase, they have a difference of 90 from each other.

[0093] Further, the rotational force generator according to the present invention has the following additional solution means.

[0094] (1) As shown in FIGS. 11, 12, and 19, the left and right rotating mechanism coupling units 2 are hinge-coupled to the ends of the rotating mechanism coupling unit revolution arms 12 by means of a rotating mechanism coupling unit rotating horizontal shaft 14 as a rotary shaft extending in a horizontal direction thereof, so that the left and right rotating mechanism coupling units 2 perform arc reciprocating motions whose inclinations are varied according to the changes in the flow velocity and pressure of the fluid.

[0095] (2) As shown in FIGS. 11 and 13, each blade 35 has a straight line horizontal sectional area with no concave and convex shapes and a vertical sectional area with concave and convex shapes or protrusions, so as to induce the fluid to flow in the horizontal direction thereof after the flowing fluid has collided against the surface thereof.

[0096] (3) As shown in FIGS. 13 to 15, two or more crank mechanisms 41 each having a crank shaft 411, a crank arm 412, and a crank pin 413 are fixedly coupled up and down to the ends of the blade revolution shaft 31 and the corresponding blade rotation shaft 34 of each blade revolution shaft rotating mechanism 3 at the intervals of the same phase angle of the crank arm 412.

[0097] The crank pin 413 of the blade revolution shaft 31 and the crank pin 413 of the blade rotation shaft 34 having the same rotating phase angle are hinge-coupled to revolution and rotation crank interlocking arms 42 extending radially around the crank pins 413 of the blade revolution shaft 31 and rotating in place, so that the crank pin 413 of the blade revolution shaft 31 and the crank pin 413 of the blade rotation shaft 34 interlock with each other and revolve around the respective crank shafts 411 at the same phase angle and angular velocity.

[0098] As shown in FIGS. 15 and 16, a revolution and rotation gear shifting spur gear 43 having a sun gear and planet gears is disposed between the blade revolution shaft 31 and the blade revolution shaft support 22 in such a way as to be fixedly coupled to one surface of the left and right rotating mechanism coupling arms 21 to allow a rotating angular velocity of the blade revolution shaft 31 is 0.5 times higher than the revolving angular velocity of the blade rotation shaft. In this case, the blade revolution shaft 31 is divided into the revolution arm separation blade revolution shaft 312 coupled to the crank mechanism 41 and the revolution arm coupling blade revolution shaft 311 as a cylindrical member surrounding the revolution arm separation blade revolution shaft 312 in such a way as to be coupled to the blade revolution arms 32.

<Operating Principle>

[0099] (1) As shown in FIGS. 2 and 5, the left and right rotating mechanism coupling units 2 are symmetrical with each other and perform revolutions at given distances around the rotating mechanism coupling unit revolution shaft 11.

[0100] Accordingly, even if the flows of the fluid are changed frequently and no additional direction control power is supplied, the entire blade surface is pushed against the pressure of the fluid flowing, so that as each blade 35 with the left and right symmetrical structure perpendicular to the direction of the flow of the fluid automatically moves to be located on the lowermost stream of the flow of the fluid, the blade 35 receives the biggest pressure from the flow of the fluid to generate the rotational force to the maximum.

[0101] (2) As shown in FIG. 3, if each blade 35 receives the pressure, it revolves around the blade revolution shaft 31.

[0102] In this case, since the blade revolution shaft support gear 51 is fixedly coupled to the blade revolution shaft support 22, without any rotation, a driven spur gear 61 of the revolution and rotation gear shifting interlocker 36 disposed between the blade revolution shaft support gear 51 and the blade rotation shaft gear 53 rotates, while revolving around the blade revolution shaft support gear 51, and through the revolution and rotation gear shifting interlocker 36, the rotational speed of the blade revolution shaft 31 is shifted at an angular velocity 0.5 times higher than the angular velocity in the opposite direction thereto and transmitted to the blade rotation shaft gear 53, so that the blade 35 performs rotation and revolution simultaneously.

[0103] (3) As shown in FIG. 4, the blade revolution shaft gear 52 is fixedly coupled to each blade revolution shaft 31.

[0104] Further, the left and right blade revolution phase interlockers 24 are disposed on the left and right blade revolution shaft gears 52 to interlockingly rotate in the opposite direction to each other at the same angular velocity, and each blade revolution phase interlocker 25 includes the plurality of spur gears, bevel gears, or crank mechanisms. Further, a generator 7 is disposed on the center of the left and right blade revolution phase interlockers 24 to receive the rotational forces.

[0105] (4) As shown in FIG. 5, the rotational force generator has three blades 35 coupled to one blade revolution shaft 31 and transmits driving forces through chain belts 64. The structure and method where the rotational forces are transmitted are the same as shown in FIG. 6 or 23. Like this, if three blades 35 are coupled to one blade revolution shaft 31, the width of each blade 35 becomes only maximum two times bigger than the revolution radius, as shown in FIG. 7. However, if two blades 35 are coupled to one blade revolution shaft 31, as shown in FIG. 2, the width of each blade 35 becomes 2*(2{circumflex over ()}0.5)=2.8 times bigger than the revolution radius.

[0106] (5) As shown in FIGS. 10 to 14, in the case where the flow velocity and pressure of the fluid are increased due to strong winds or floods, the acting point of the entire resultant force of the pressure of the fluid applied to the blades 35 is located above the rotating mechanism coupling unit rotating horizontal shaft 14.

[0107] In this case, the upper portions of the left and right rotating mechanism coupling units 2 are inclined toward the direction of the flow of the fluid, and contrarily, if the acting point is located under the rotating mechanism coupling unit rotating horizontal shaft 14, the left and right rotating mechanism coupling units 2 are inclined in the opposite direction thereto to lower an elevation angle.

[0108] Accordingly, the orthographic projection areas of the left and right rotating mechanism coupling units 2 in the direction of the flow of the fluid become reduced, thereby suppressing the rotational force generator from collapsing or turning over due to the pressure of the fluid.

[0109] As the left and right rotating mechanism coupling units 2 are inclined, further, the rotating direction forces of the blades 35 in the pressure of the fluid in the direction of the flow of the fluid are gradually reduced, and therefore, if degrees of sensitivity (weights, center of gravity, blade areas, acting points of pressure, etc.) causing the left and right rotating mechanism coupling units 2 to be inclined are appropriately controlled according to the flow velocity and pressure of the fluid, the revolution speeds of the blades 35 are automatically controlled to be within an appropriate range, without the supply of any additional power.

[0110] (6) FIG. 15 shows an operating mechanism of a crank type revolution and rotation interlocker 4 in which two +-shaped radial crank pin connection arms 42 for interlocking one blade revolution shaft crank mechanism 41 and four blade rotation shaft crank mechanisms 41 revolve together at point symmetrical positions with each other around the blade revolution shaft 31, thereby transmitting rotational forces to the blade rotation shafts 34, without the generation of any eccentric loads. If the number of blade rotation shafts is three, each radial crank pin connection arm 42 has the shape of Y, and if the number of blade rotation shafts is two, each radial crank pin connection arm 42 has the shape of I.

[0111] Further, FIG. 16 shows an operating mechanism of the revolution and rotation gear shifting spur gear 43 reducing the revolution angular velocity of the blades 35 to and transmitting the reduced angular velocity to the blade revolution shaft 31. That is, the revolution and rotation gear shifting spur gear 43 is fixedly coupled to the left and right rotating mechanism coupling arms 21, and the revolution arm coupling blade revolution shaft 311 surrounds the revolution arm separation blade revolution shaft 312, so that if the blades 35 revolve, a revolution arm coupling sun gear 433 fixed to the revolution arm coupling blade revolution shaft 311 rotates in place and gear-shifted by means of the combination of the planet gears therearound to reduce the rotation angular velocity of a revolution shaft coupling sun gear 431 fixed to the revolution arm separation blade revolution shaft 312 to 0.5 times and transmit the reduced angular velocity.

<Mechanical Analysis of Fluid>

[0112] (1) Referring to rotational force generating efficiency, if the flow velocities of fluids are the same, the rotational force generator according to the present invention generates a rotational force two or more times higher than the existing vertical rotating shaft type generator, which will be explained mechanically with reference to FIGS. 8 and 9 on the stationary time points when the blades 35 start to move.

[0113] First, it is assumed that a revolution radius of the blade 35 is R, a span of the blade 35 is S, a density of the fluid is , a position of the blade revolution shaft 31 is O, a position of the blade rotation shaft 34 at a revolution base point where the revolution phase angle is 0 is B, a position of the blade rotation shaft 34 when the revolution phase angle is is C, a flow rate of fluid hitting one blade 35 revolving is Qo, a flow velocity of fluid flowing backward along the surface of the blade among the fluid hitting the blade 35 is V1 and a flow rate thereof is Q1, and a flow velocity of fluid flowing forward along the surface of the blade 35 is V2 and a flow rate thereof is Q2. Further, it is assumed that on a coordinate system (x-axis, y-axis) of the surface direction of the blade 35 with respect to the blade rotation shaft 34, a direction toward the blade surface is the x-axis and a direction vertical thereto is the y-axis; on a coordinate system (s-axis, r-axis) in an orbital direction of the blade 35, a tangential direction is the s-axis and a radius direction is the r-axis; and on a coordinate system (x-axis, y-axis) in a horizontal plane direction, a horizontal direction is the x-axis and a vertical direction is the y-axis. Torque and moment per unit height of the blade 35 are calculated as follows:

[00001]$\begin{array}{cc}\mathrm{Qo}=S*\mathrm{Cos}\left(/2\right)*\mathrm{Vo}.& \left(a\right)\end{array}$

[0114] Accordingly, the momentum Fo per unit time of Qo is *Qo*Vo=p*S*Cos(/2)*Vo{circumflex over ()}2

[0115] (b) The flow velocity in the x-y axis direction of Qo is as follows.

[00002]${\mathrm{Vox}}^{}=\mathrm{Vo}*\mathrm{Sin}\left(/2\right),$${\mathrm{Voy}}^{}=\mathrm{Vo}*\mathrm{Cos}\left(/2\right)$

[0116] (c) In the case of Fx=0,

[00003]$*\mathrm{Qo}*\mathrm{Vo}*\mathrm{Sin}\left(/2\right)=-*Q1*V1+*Q2*V2$

[0117] (d) Since there is no difference in pressure in the y direction at point C, Vo=V1=V2

[00004]$\mathrm{In}\mathrm{Qo}=Q1+Q2,$$Q1=0.5*\mathrm{Qo}*\left\{1-\mathrm{Sin}\left(/2\right)\right\}$$Q2=0.5*\mathrm{Qo}*\left\{1+\mathrm{Sin}\left(/2\right)\right\}$

[0118] (e) A driving force Fs required in a tangential direction to a revolution orbit of the blade rotation shaft is as follows.

[00005]$\mathrm{Fs}=\left(m*V\right)s=*\mathrm{Qo}*\mathrm{Vo}*\mathrm{Cos}\left(\right)-*Q1*V1s+*Q2*V2s$$V1s=V2s=\mathrm{Vo}*\mathrm{Sin}\left(/2\right)$

[0119] Accordingly, *Q1*V1s=0.5**Qo*Vo*{1Sin(/2)}*{Sin(/2)}

[00006]$*Q2*V2s=0.5**\mathrm{Qo}*\mathrm{Vo}*\left\{1+\mathrm{Sin}\left(/2\right)\right\}*\left\{\mathrm{Sin}\left(/2\right)\right\}$$\mathrm{Qo}=\mathrm{Vo}*S*\mathrm{Cos}\left(/2\right)$

[0120] Accordingly, Fs=p*S*(Vo{circumflex over ()}2)*Cos(/2)*[Cos()+{Sin(/2)}{circumflex over ()}2]

[0121] In this case, {Sin(/2)}{circumflex over ()}2=0.5*{1Cos()}

[0122] Accordingly, Fs()=0.5**S*(Vo{circumflex over ()}2)*Cos(/2)*{1+Cos()}

[00007]$\mathrm{Ms}\left(\right)=0.5**S*R*\left(\mathrm{Vo}^2\right)*\mathrm{Cos}\left(/2\right)*\left\{1+\mathrm{Cos}\left(\right)\right\}$

[0123] In this case, it is assumed that a=0.5*Cos(/2)*{1+Cos()}.

[0124] Accordingly, the torque by revolution phase , Ms()=*S*R*(Vo{circumflex over ()}2)*a

[0125] (f) If a=0.5*Cos(/2)*{1+Cos()} is integrated, [2*sin(/2)()*sin.sup.3(/2) is produced, and if integration is performed from 0 to 180, 1.312 is produced.

[0126] Accordingly, the instant maximum value of the torque produced while the blade is rotating to 360, Ms(max)=Ms(0)=*S*R*(Vo{circumflex over ()}2), and the total average value, Ms(ave)=Ms(max)*(1.312*2)/(2)=0.417*Ms(max).

[0127] Further, in the case of the existing vertical rotary shaft wind generator as shown in FIG. 1d, torque is produced only in the range of the phase angle between 90 to 90. V1s=V1*Cos(), V2s=0. Further, the orthographic projection area of the blade 35 in the direction of V0 is S*Cos().

[0128] If it is assumed that the torque by phase angle is Ms(), Ms()=0.5**S*R*(Vo{circumflex over ()}2)*Cos()*{1+Cos(2)}.

[0129] In this case, if it is assumed that a=0.5*Cos()*{1+Cos(2)} and integration is performed, the result is [*Sin()+ 1/12*Sin(3)], and if the integration from 90 to 90 is performed, the value is 1.312.

[0130] (g) Therefore, if it is assumed that the instant maximum value of the torque produced while the blade is rotating to 360 (2 radian), Ms(max)=Ms()=*S*R*(Vo{circumflex over ()}2), and the average value is Ms(ave),

Ms(ave)=Ms(max)*(1.312)/(2)=0.209*Ms(max)

[0131] (h) Even if the backward () torque caused by the movement of the blade 35 against the flow of the fluid is not produced at all when the blade of the existing vertical rotary shaft wind generator passes through the phase angle of 90 to 270, the average amount of torque generated from the rotational force generator according to the present invention, 0.417*M(max) is two times larger than 0.209*M(max) generated from the existing vertical rotary shaft wind generator.

[0132] (2) Referring to safety improvement efficiency, in the case where the pressure of the fluid is increased due to strong winds or floods, the rotational force generator according to the present invention has a lower degree of risk of overturning and collapse than the existing vertical rotary shaft wind generator and drastically prevents the blades 35 from rotating at excessive velocities.

[0133] When a strong wind with a speed of 30 m/s (108 km per hour) blows, for example, in the case where the left and right rotating mechanism coupling units 2 are designed to be inclined by 60 in the range from the elevation angle of 90 to the elevation angle of 30 around the rotating mechanism coupling unit rotating horizontal shaft 14, the overturning moment applied to the rotating mechanism coupling unit support 1 of the rotational force generator according to the present invention is reduced to about of the overturning moment of the existing vertical rotary shaft wind generator, and the torque applied to the blade of the rotational force generator according to the present invention is reduced to about of the torque of the existing vertical rotary shaft wind generator. This will be explained mechanically with reference to FIG. 12.

[0134] First, it is assumed that the vertical length s of the blade 35 facing the flow of the fluid is 5 m, the horizontal length b thereof is 5 m, an inclination with respect to a vertical direction is 60, the weight of the blade 35 is 0, the counterweight of the lower portion of the blade is W, a distance between the rotating horizontal shaft and the bottom of the blade is d, the height h of the rotating horizontal shaft is 3 m, a flow velocity Vo is 30 m/sec, and a flow rate is Qo, and the overturning moment and the rotational force of the blade are calculated as follows.

[00008]$\begin{array}{cc}\mathrm{Qo}=\mathrm{Vo}*s*b*\mathrm{Cos}\left(\right)& \left(a\right)\end{array}$

[0135] (b) The pressure of fluid applied to the blade, P=*Qo*Vo*Cos()=*s*b*(Vo{circumflex over ()}2)*[Cos()]{circumflex over ()}2

[0136] (c) At the point of A, M=0, and accordingly, W*d*Sin()=P*(s/2d)

[0137] W={0.5/Sin()}*P*(s/d2), and in this case, if it is assumed that k is d/s,

W=0.5*(1/k2)*[Cos()/Tan()]*}***s*b*(Vo{circumflex over ()}2)

[0138] (d) At the point of B, M=0, and accordingly, M.sub.B+(Px)*h

[0139] In this case, Px=P*Cos(), and accordingly, M.sub.B=*s*b*h*(Vo{circumflex over ()}2)*[Cos()]{circumflex over ()}3

[0140] (e) If 30 m/sec for Vo, 1.23 kg/m3 for air density, 60 for , 5 m for s, 5 m for b, and 3 m for the height h are substituted, P is 706.0 kgf, and the overturning moment applied to the base of the support shaft, M.sub.B is 1,059.0 kgf*m.

[0141] (f) In this case, if k=d/s=0.3, the weight W of the counterweight is 543.4 kgf, and if k=0.4, W=203.8 kgf. The function of the counterweight is conveniently performed if a generator or capacitor is installed under the rotational force generator.

[0142] As shown in FIG. 14, if the rotating mechanism coupling unit rotating horizontal shaft 14 is located above the center of the vertical length s of the blade, no additional counterweight W is needed.

[0143] (g) If the strong wind (V=30 m/sec) is applied to the left and right rotating mechanism coupling units 2 being in a vertical state (0=0), P=1.23*5*5*(300{circumflex over ()}2)*1/9.8=2,824.0 kgf.

[00009]$M_B=1.23*5*5*3*\left(300^2\right)*1/9.8=8,472.\mathrm{kgf}*m$

[0144] (h) Accordingly, if the rotational force generator according to the present invention is applied to a wind generator, the bending moment applied to the support is drastically reduced (to in the case of the inclination of 60) even when the strong wind with a speed of 30 m/s (108 km per hour) blows, so that the risk of overturning or collapse is completely removed.

[0145] (i) Further, if the inclination of the blade 35 has 60 to cause [Cos(60)]{circumflex over ()}2=0.25, the pressure P (60) of the fluid in the rotational direction of the blade 35 is 706 kgf, which is reduced to of the pressure P (90) of 2,824 kgf in the vertical state, thereby basically removing the problems the existing wind generator has had, that is, the breakage of parts or materials due to the excessive rotation speeds of the blades 35, the abnormality occurrence of the generator due to excessive current, and the like.

<Detailed Explanation on Additional Exemplary Views>

[0146] FIGS. 17a-17c are exemplary views showing the rotational force generator according to the present invention in which the left and right rotating mechanism coupling units 2 having the shape of a bird flapping its wings are coupled rotatable up and down to the cylindrical rotating mechanism coupling unit revolution shaft 11 hinge-coupled relatively rotatable to an intermediate portion of a vertical structure such as a streetlight or utility pole. The rotational force generator according to the present invention has the following advantages.

[0147] (1) If the rotational force generator according to the present invention is installed on a linear site such as a road, a railway, dike, and the like, it is easy to obtain an installation site, and an installation cost becomes low.

[0148] (2) If the rotational force generator according to the present invention is installed on such a linear site, there is no obstacle, and accordingly, a good flow velocity is obtained.

[0149] (3) If a wind velocity is increased rapidly due to strong winds or the like, dynamic load is reduced through the upward and downward rotations of the left and right rotating mechanism coupling units.

[0150] (4) The left and right rotating mechanism coupling units have the shape of a bird flapping its wings, and accordingly, if the rotational force generator according to the present invention is installed on a road or park, good outer beauty is obtained.

[0151] (5) The energy efficiency in the generation of the rotational force from the rotational force generator is two times higher than that from the existing vertical shaft wind generator.

[0152] To perform the upward and downward rotations, as shown in FIGS. 17b and 17c, the upper areas of the blades 35 are larger than the lower areas thereof around the rotating mechanism coupling unit rotating horizontal shaft 14, and to avoid the interference with the vertical structure, a left rotating mechanism coupling arm 211 and a right rotating mechanism coupling arm 212 are separated from each other below the rotating mechanism coupling unit rotating horizontal shaft 14.

[0153] Further, a tail blade-shaped rudder 76 is disposed behind the left and right rotating mechanism coupling units 2, and to ensure good outer beauty and weight balance, a member having the shape of a bird head is disposed in front of the left and right rotating mechanism coupling units 2.

[0154] As shown in FIG. 18, a wind generator is configured to allow the left and right rotating mechanism coupling units 2 having the shape of H to hang on the rotating mechanism coupling unit rotating horizontal shaft 14, like a pendulum, and rotate back and forth according to the strength of wind, and further, the rotating mechanism coupling unit revolution shaft 11 including the shape of a heart rotates to the left and right sides according to the direction of wind above the rotational force generator base 13.

[0155] The bird-shaped wind generators as shown in FIGS. 17a-17c or 18 are continuously installed along a center or side of a flat road, railway, dike, and the like, as shown in FIG. 18, and the electricity generated from the wind generators is accumulated to a large-size battery (ESS) and thus utilized for various purposes for street lights, electric vehicle charging, black ice melting, and the like.

[0156] Further, a portion of the blade 35, which is distant from the blade revolution shaft 31 around the blade rotation shaft 34, is configured to allow the blade surface meeting the flow of the fluid to be concaved, and a portion of the blade 35, which is close to the blade revolution shaft 31, is configured to allow the blade surface meeting the flow of the fluid to be convexed (the line symmetry around the blade rotation shaft 34), so that desirably, the portion distant from the blade revolution shaft 31 receives a relatively higher pressure than the portion close to the blade revolution shaft 31. This is because the torque is improved in proportion to the moment arm length as a distance from the blade revolution shaft 31 to the blade surface to which the pressure is applied.

[0157] As shown in FIGS. 19 and 20, if four or more blade revolution shaft rotating mechanisms 3, each rotating mechanism coupling unit 2 is separated into a left rotating mechanism coupling unit 211 and a right rotating mechanism coupling unit 212 that are hinge-coupled to perform relative movements through which left and right internal angles are increased and decreased. The left rotating mechanism coupling unit 211 and the right rotating mechanism coupling unit 212 are hinge-coupled to the rotating mechanism coupling unit revolution shaft 11 by means of the separate rotating mechanism coupling unit revolution arms 12, and an extension spring or turnbuckle 75 (a long bolt and a nut) having a distance adjusting function is disposed between the hinge-coupled portion of the center of the left and right rotating mechanism coupling units 2 and the rotating mechanism coupling unit revolution shaft 11. If the rotational force generator of the present invention has such functional structures, the left and right rotating mechanism coupling units 2 rotate to face the flow of the fluid on the front surfaces thereof, and an angle between the left rotating mechanism coupling unit 211 and the right rotating mechanism coupling unit 212 is increased or decreased according to the flow velocity and pressure of the fluid to allow the dynamic load to be buffered, thereby preventing the rotational force generator from collapsing or turning over due to the pressure of the fluid, allowing the blades 35 to have rotation and revolution velocities at appropriate levels, and permitting the energy of the fluid flowing to a large width to be effectively used in generating the rotational force. Further, rotation phase angles of the left and right side blades 35 with respect to the blade revolution shaft 31 may be in the opposite direction to those as shown in FIGS. 21a-21d.

[0158] The present invention may be modified in various ways and may have several exemplary embodiments. However, this does not limit the invention within specific embodiments and it should be understood that the invention covers all the modifications, equivalents, and replacements within the scope of the claims of the invention. [0159] 1: Rotating mechanism coupling unit support [0160] 11: Rotating mechanism coupling unit revolution shaft [0161] 12: Rotating mechanism coupling unit revolution arm [0162] 13: Rotational force generator base [0163] 14: Rotating mechanism coupling unit rotating horizontal shaft [0164] 2: Left and right rotating mechanism coupling units [0165] 21: Left and right rotating mechanism coupling arms [0166] 211: Left rotating mechanism coupling unit [0167] 212: Right rotating mechanism coupling unit [0168] 22: Blade revolution shaft support [0169] 23: Left and right rotating mechanism coupling column [0170] 24: Left and right blade revolution phase interlockers [0171] 241: Spur gear combination left and right interlocker [0172] 242: Bevel gear type left and right interlocker [0173] 243: Crank combination left and right interlocker [0174] 3: Blade revolution shaft rotating mechanism [0175] 31: Blade revolution shaft [0176] 311: Revolution arm coupling blade revolution shaft [0177] 312: Revolution arm separation blade revolution shaft [0178] 313: Non-rotation blade revolution shaft [0179] 32: Blade revolution arm [0180] 33: Blade rotation shaft support [0181] 34: Blade rotation shaft [0182] 341: Revolution arm coupling blade rotation shaft [0183] 342: Blade coupling blade rotation shaft [0184] 35: Blade [0185] 351: Flat type blade [0186] 352: Concave blade [0187] 353: Partition type blade [0188] 354: Corrugated blade [0189] 36: Revolution and rotation gear shifting interlocker [0190] 361: Spur gear rotation gear shifting interlocker [0191] 362: Bevel gear rotation gear shifting interlocker [0192] 364: Chain belt type gear shifting interlocker [0193] 4: Crank type revolution and rotation gear shifting interlocker [0194] 41: Crank mechanism [0195] 411: Crank shaft [0196] 412: Crank arm [0197] 413: Crank pin [0198] 42: Radial crank pin connection arm [0199] 43: Revolution and rotation gear shifting planetary gear [0200] 431: Revolution shaft coupling sun gear [0201] 432: Revolution shaft interlocking planetary gear [0202] 433: Revolution arm coupling sun gear [0203] 434: Revolution arm interlocking planetary gear [0204] 5: Blade rotating shaft gear [0205] 51: Blade revolution shaft support gear [0206] 52: Blade revolution shaft gear [0207] 521: Blade revolution shaft spur gear [0208] 522: Blade revolution shaft bevel gear [0209] 523: Blade revolution shaft chain gear [0210] 524: Blade revolution shaft planetary gear [0211] 525: Revolution shaft support planetary gear [0212] 526: Revolution shaft planetary chain gear [0213] 53: Blade rotation shaft gear [0214] 531: Blade rotation shaft spur gear [0215] 532: Blade rotation shaft bevel gear [0216] 533: Blade rotation shaft chain gear [0217] 6: Rotational force transmission part [0218] 61: Driven spur gear [0219] 62: Driven bevel gear [0220] 63: Bevel gear long axis [0221] 64: Chain belt [0222] 65: Driven chain gear [0223] 7: Others [0224] 71: Generator [0225] 72: Generator rotating shaft [0226] 73: Generator shaft rotating gear [0227] 74: Crank connecting rod [0228] 75: Turnbuckle [0229] 76: Rudder