A rotational force generator revolving and rotating according to a flow of a fluid, comprising:
- blade revolution shaft rotating mechanisms each including two or more blades spaced apart from one another at intervals of a same revolution phase angle, wherein each blade rotates around a blade rotation shaft while simultaneously revolving around a blade revolution shaft if a pressure is received from the flow of the fluid, thereby providing rotational force to the blade revolution shaft;
- at least one each left and right rotating mechanism coupling units disposed on each of left and right sides of a central portion of the rotational force generator;
- and
- a rotating mechanism coupling unit support for supporting the left and right rotating mechanism coupling units, allowing the left and right rotating mechanism coupling units to revolve to left and right sides at given intervals according to changes in flowing directions of the fluid,
- wherein the rotating mechanism coupling unit support comprises:
- a rotating mechanism coupling unit revolution shaft enabling the left and right rotating mechanism coupling units to revolve;
- rotating mechanism coupling unit revolution arms for connecting the left and right rotating mechanism coupling units to the rotating mechanism coupling unit revolution shaft in a manner that the left and right rotating mechanism coupling units are arranged symmetrically to each other;
- and
- a rotational force generator base for supporting the rotating mechanism coupling unit revolution shaft,
- wherein the left and right rotating mechanism coupling units comprise:
- left and right rotating mechanism coupling arms for 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 sides of the left and right rotating mechanism coupling arms at given intervals and configured to receive and secure the blade revolution shafts,
- wherein each blade revolution shaft rotating mechanism comprises:
- the blade revolution shaft, which is fitted to the blade revolution shaft support and extends in a vertical direction;
- blade revolution arms extending in a horizontal direction around the blade revolution shaft at same revolution distances and same phase intervals respectively;
- blade rotation shaft supports disposed on ends of the blade revolution arms;
- the blade rotation shaft, which is fitted to the blade rotation shaft supports and extend parallel to the blade revolution shaft;
- and
- a revolution and rotation gear shifting interlocker, which transmits the rotating speed of the blade revolution shaft to the blade rotation shaft so as to rotate in an opposite direction to the rotating direction of the blade revolution shaft at an angular velocity that is 0.5 times the angular velocity of the blade revolution shaft,
- whereby each blade is fixedly coupled to the blade rotation shaft, each blade having two thin curved bodies and being joined around the blade rotation shaft, and
- wherein a relation between the revolution phase angle and a rotation phase angle of each blade is such that, at two revolution phases where the horizontal direction toward adjacent blade revolution shafts intersects with the revolution orbit of the blade rotation shaft, in one of the two revolution phases, a direction perpendicular to the surface of the blade is perpendicular to a direction where the left and right rotating mechanism coupling arms extend, and in the other of the two revolution phases, the direction perpendicular to the surface of the blade is parallel to the direction where the left and right rotating mechanism coupling arms extend,
- so that even when the flowing directions of the fluid are changed frequently, the left and right rotating mechanism coupling units rotate by the flow of the fluid and move toward a downward direction of the flow of the fluid, causing the rotating mechanism coupling unit revolution arms to align parallel to the flow of the fluid and the left and right rotating mechanism coupling units to face a direction perpendicular to the flow of the fluid, each blade has the rotation phase angle that enables to generate the rotational force to the maximum according to the respective revolution phase.