JP6047348B2 - Rotating device for fluid - Google Patents

Description

  The present invention relates to a fluid rotating device that can be used as a power source or a power source.

  As a horizontal axis type power generator that generates power using a conventional rotating body, there is a wind power generator using a propeller or the like (see, for example, Patent Document 1).

JP 2001-115944 A

  The conventional horizontal axis type wind power generator is said to have a reduction in rotational efficiency and a decrease in power generation efficiency as a part of the wind passes between the blades of the propeller or escapes from the rotating surface in the circumferential direction. There was a problem. In addition, since wind power generation has about half the power generation efficiency compared to hydropower generation, there is a demand to increase power generation efficiency as much as possible when using wind power.

  The present invention has been made paying attention to such a problem, and can provide a fluid rotating device that can increase the rotation efficiency and can dramatically increase the power generation efficiency when used for power generation. It is aimed.

A fluid rotating device according to the present invention is a fluid rotating device that rotates using a fluid, and is a rotational base that is rotatably provided around a central axis, and rotationally symmetric with respect to the central axis of the rotating base. A plurality of blades provided on the rotating base, each of which includes a circular receiving surface formed from a bottom surface of the truncated cone and disposed upstream of the fluid; and a truncated cone Each of the blades extends from the central portion of the receiving surface to the outside of the outer peripheral edge, and is provided with a front portion provided to be inclined with respect to the receiving surface. It protrudes outward from the inclined side surface, is inclined in the same direction as the inclined direction of the front portion, and extends from the portion of the front portion that protrudes from the outer peripheral edge of the receiving surface toward the downstream side of the inclined side surface. Extends and protrudes from the inclined side At intervals, projecting toward the upstream side along the central axis between but the side surface portion provided so as to gradually increase toward the downstream, the outer circumferential edge and the inclined side surface of said受流surface And the outer peripheral part provided integrally with the front part and the side part.

  The fluid rotating device according to the present invention can rotate the rotating base by receiving the flow of the fluid at the receiving surface with the receiving surface facing the upstream side of the fluid. The fluid flow is, for example, wind or water flow. When the fluid rotating device according to the present invention receives a fluid flow on the receiving surface, the fluid rotating device hits the front portions of a plurality of blades provided on the receiving surface. At this time, since the fluid flows along the inclination of the front portion so as to push the inclination toward the downstream side, the rotating base body rotates toward the upstream side of the inclination of the front portion.

  The fluid that hits the front part of the blade flows from the central part toward the outer peripheral edge along the surface of the receiving surface, and hits the outer peripheral part of each blade beyond the outer peripheral edge of the receiving surface. Further, the fluid flows from the distance between the outer peripheral edge of the receiving surface and the outer peripheral portion of each blade to the rear back surface of the rotating base along the side surface of each blade and the inclined side surface of the rotating base. At this time, since the side surface portion of each blade is inclined in the same direction as the inclination direction of the front portion, when the fluid pushes the inclination to the downstream side, the rotating base body moves toward the upstream side of the inclination of the side surface portion. Rotate. Since the rotation direction is the same as the rotation direction by the front portion of each blade, the rotation speed of the rotating base can be increased.

  In the fluid rotating device according to the present invention, the fluid flowing from the outer peripheral edge of the receiving surface and the outer peripheral portion of each blade to the rear back surface is caused by the fluid flowing to the receiving surface one after another or the rotation of the rotating base. It is compressed by the rotating front part. Further, since the protruding amount from the inclined side surface of each blade is gradually increased toward the downstream side, the flow path cross-sectional area through which the fluid flows gradually increases toward the downstream side. As a result, when the compressed fluid flows through the side surface of each blade, the pressure is reduced and the flow velocity increases, so that the rotation of the rotating base can be further increased. As described above, the fluid rotating device according to the present invention can rotate the rotating base at a high speed and can increase the rotation efficiency.

  The rotating device for fluid according to the present invention can use not only the rotation obtained by the front part of each blade but also the rotation obtained by the flow of fluid to the rear back surface of the rotating base, Since the received fluid can be used without waste, the rotational efficiency can be dramatically increased. The fluid rotating device according to the present invention can be used for power generation by connecting the rotating base to power generation means, or the rotation of the rotating base can be used as a power source. When used for power generation, power generation efficiency can be dramatically increased. In particular, when wind is used as the fluid flow, it is possible to obtain much higher power generation efficiency than that obtained with a conventional wind power generator.

  The rotating device for fluid according to the present invention can be reduced in size easily because the rotating diameter can be reduced as compared with a conventional windmill or the like having blades spread outward. The fluid rotating device according to the present invention is preferably configured to be able to change the direction of the receiving surface according to the direction of the fluid flow so that the fluid is always received by the receiving surface. When used for power generation, the power generation means is preferably disposed in a location that is not affected by the fluid, such as inside or behind the rotating base. Further, in order to further rotate the rotating base at a higher speed, a portion of the outer peripheral portion of each blade that covers the outer side of the front portion is provided so as to gradually open outward as the distance from the outer peripheral edge of the receiving surface increases. Preferably it is.

  In the fluid rotating device according to the present invention, each blade may have a wing-like cross-sectional shape. In this case, since lift is generated by the wind hitting each blade, the rotational speed of the rotating base can be further increased by using the lift.

  ADVANTAGE OF THE INVENTION According to this invention, rotation efficiency can be improved and when it utilizes for electric power generation, the rotation apparatus for fluid which can raise electric power generation efficiency dramatically can be provided.

It is a perspective view which shows the rotation apparatus for fluids of embodiment of this invention. It is a front view of the rotation apparatus for fluids shown in FIG. It is a rear view of the rotation apparatus for fluids shown in FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 3 show a fluid rotating device according to an embodiment of the present invention.
As shown in FIG. 1 to FIG. 3, the fluid rotating device 10 includes a power generating device that generates electric power using a fluid such as wind or water flow, and includes a rotating base 11, a plurality of blades 12, and power generating means 13. ing.

  The rotating base 11 has a truncated cone shape, and has a circular flow receiving surface 11a composed of a bottom surface of the truncated cone and an inclined side surface 11b composed of a side surface of the truncated cone. The rotating base 11 is disposed so that the receiving surface 11a faces the upstream side of the fluid, and is rotatable about a central axis passing through the center of the receiving surface 11a. Thereby, the inclined side surface 11b is arrange | positioned so that an outer diameter may become small gradually toward the downstream from upstream. The rotating base 11 has a conical shaft member 11c provided upright at the center of the flow receiving surface 11a.

  Each of the plurality of blades 12 is formed of a single plate-like member, and integrally includes a front surface portion 12a, a side surface portion 12b, and an outer peripheral portion 12c. Each blade 12 is provided on the rotary base 11 so as to be rotationally symmetric with respect to the central axis of the rotary base 11. The front portion 12a is provided along the flow receiving surface 11a so as to protrude and extend from the shaft member 11c at the center of the flow receiving surface 11a to the outside of the outer peripheral edge. The front portion 12a is arranged to be curved in an arc shape on the receiving surface 11a, and is provided so as to be inclined toward the inside of the bending with respect to the receiving surface 11a. The front portion 12a is fixed to the flow receiving surface 11a and the shaft member 11c.

  The side surface portion 12b is provided so as to extend from the portion of the front surface portion 12a protruding from the outer peripheral edge of the flow receiving surface 11a toward the downstream side of the inclined side surface 11b. The side surface portion 12b is fixed to the inclined side surface 11b so as to protrude outward from the inclined side surface 11b. The side surface portion 12b is provided along the inclined side surface 11b so as to incline in the same direction as the inclination direction of the front surface portion 12a and to obliquely cross the inclined side surface 11b. The side surface portion 12b is provided such that the protruding amount from the inclined side surface 11b gradually increases toward the downstream side by utilizing the fact that the diameter of the inclined side surface 11b which is the side surface of the truncated cone gradually decreases toward the downstream side. It has been.

  The outer peripheral part 12c is integrated with the front part 12a and the side part 12b continuously from the edge of the front part 12a protruding from the outer peripheral edge of the receiving surface 11a and the outer side edge of the side part 12b. Is provided. The outer peripheral part 12c is arrange | positioned so that the outer peripheral edge of the receiving surface 11a and the inclination side surface 11b may be spaced, and the outer side of the upstream of the front part 12a and the side part 12b may be covered. Moreover, the outer peripheral part 12c is provided so that the part which covers the outer side of the front part 12a may open gradually outside as it leaves | separates from the outer periphery of the receiving surface 11a.

The power generation means 13 is configured to generate power by the rotation of the rotating base 11. The power generation means 13 is disposed behind the rotating base 11 so as not to be affected by the fluid. The power generation means 13 may be disposed inside the rotating base 11.
The fluid rotating device 10 is configured to be able to change the direction of the receiving surface 11a according to the direction of the fluid flow so that the fluid is always received by the receiving surface 11a.

Next, the operation will be described.
The fluid rotating device 10 can generate power by receiving the flow of the fluid at the receiving surface 11a with the receiving surface 11a facing the upstream side of the fluid. When the fluid rotating device 10 receives a fluid flow on the flow receiving surface 11a, the fluid rotating device 10 hits the front surface portions 12a of the plurality of blades 12 provided on the flow receiving surface 11a. At this time, since the fluid flows along the inclination of the front surface portion 12a so as to push the inclination toward the downstream side, the rotating base 11 rotates toward the upstream side of the inclination of the front surface portion 12a.

  The fluid that hits the flow receiving surface 11a flows from the central portion toward the outer peripheral edge along the surface of the flow receiving surface 11a, and passes through the outer peripheral edge of the flow receiving surface 11a and hits the outer peripheral portion 12c of each blade 12. At this time, since the outer peripheral portion 12c to which the fluid hits is provided so as to gradually open outward as the distance from the outer peripheral edge of the flow receiving surface 11a increases, the rotational speed of the rotating base 11 can be increased. Further, the fluid flows along the side surface portion 12b of each blade 12 and the inclined side surface 11b of the rotating base body 11 from the distance between the outer peripheral edge of the receiving surface 11a and the outer peripheral portion 12c of each blade 12. To flow. At this time, since the side surface portion 12b of each blade 12 is inclined in the same direction as the inclination direction of the front surface portion 12a, when the fluid pushes the inclination to the downstream side, the fluid moves toward the upstream side of the inclination of the side surface portion 12b. As a result, the rotating base 11 rotates. Since the rotation direction is the same as the rotation direction by the front portion 12a of each blade 12, the rotation speed of the rotating base 11 can be further increased.

  In the fluid rotating device 10, the fluid flowing from the outer peripheral edge of the receiving surface 11 a and the outer peripheral portion 12 c of each blade 12 to the rear rear surface is fluid that flows to the receiving surface 11 a one after another, It is compressed by the front portion 12a that rotates by rotation. In addition, since the protruding amount of the side surface portion 12b of each blade 12 from the inclined side surface 11b gradually increases toward the downstream side, the flow passage cross-sectional area through which the fluid flows gradually increases toward the downstream side. Yes. As a result, when the compressed fluid flows through the side surface portion 12b of each blade 12, the pressure is reduced and the flow velocity increases, so that the rotation of the rotating base 11 can be further increased. In a specific example, it has been confirmed that the rotation base 11 having the side surface portion 12b has an increase in the number of rotations of about 15% compared to that without the side surface portion 12b. As described above, the fluid rotating device 10 can rotate the rotating base 11 at a high speed, and can generate power with high power generation efficiency by the power generation means 13.

  The fluid rotating device 10 can use not only the rotation obtained by the front portion 12a of each blade 12, but also the rotation obtained by the flow of fluid to the rear back surface of the rotating base 11, and the receiving surface 11a. Since the fluid received in step 1 can be used without waste, the power generation efficiency can be dramatically improved. In particular, when wind is used as the fluid flow, it is possible to obtain much higher power generation efficiency than that obtained with a conventional wind power generator. In addition, the fluid rotating device 10 can be reduced in size easily because the rotating diameter can be reduced as compared with a conventional windmill or the like having blades spread outward.

  In the fluid rotating device 10, each blade 12 may have a wing-like cross-sectional shape. In this case, since lift is generated by the wind hitting each blade 12, the rotational speed of the rotating base 11 can be further increased using the lift. Thereby, the power generation efficiency can be further increased. Note that the fluid rotating device 10 can not only use the power generation means 13 connected to the rotating base 11 for power generation but also use the rotation of the rotating base 11 as a mechanical power source.

DESCRIPTION OF SYMBOLS 10 Rotating device for fluid 11 Rotating base body 11a Receiving surface 11b Inclined side surface 11c Shaft material 12 Blade 12a Front portion 12b Side surface portion 12c Outer peripheral portion 13 Power generation means

Claims (2)

A fluid rotating device that rotates using a fluid,
A rotating base provided rotatably around a central axis;
A plurality of blades each provided on the rotary base so as to be rotationally symmetric with respect to the central axis of the rotary base;
The rotating base has a circular receiving surface formed from the bottom surface of the truncated cone and disposed upstream of the fluid, and an inclined side surface formed from the side surface of the truncated cone,
Each blade protrudes and extends from the center of the receiving surface to the outside of the outer peripheral edge, and protrudes outward from the inclined side surface and the front portion provided to be inclined with respect to the receiving surface, Inclining in the same direction as the inclination direction of the front portion, extending from the portion of the front portion protruding from the outer peripheral edge of the receiving surface toward the downstream side of the inclined side surface, and the protruding amount from the inclined side surface It protrudes toward the upstream side along the central axis with a space between the side surface provided so as to gradually increase toward the downstream side, the outer peripheral edge of the receiving surface and the inclined side surface. A fluid rotation device comprising: an outer peripheral portion provided integrally with the front portion and the side portion. 2. The fluid rotating device according to claim 1, wherein each blade has a wing-like cross-sectional shape.

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