【０００７】
請求項４の垂直軸風水車は、回転軸６を水平方向とし、ケーシング８内の水流上面側で回転翼５が開くようにした水流利用の請求項２または請求項３の垂直軸風水車であって、回転翼５の先端寄りに空洞を設けるなどして浮力を与えたことを特徴とする。[0007]
The vertical axis wind turbine according to claim 4 is a vertical axis wind turbine according to claim 2 or 3, wherein the rotating shaft 6 is set in a horizontal direction and the rotating blades 5 are opened on the water flow upper surface side in the casing 8. The buoyancy is provided by providing a cavity near the tip of the rotary wing 5.
【００１０】
請求項７記載の小水力発電装置は、既設の堰を利用してその下流側面に設置できることを目的としたもので、回転軸６を水平方向とした請求項３または請求項４の垂直軸風水車を用い、ケーシング８の堰下流側面側に排砂門２６と下流側端に排砂扉２７を設けてそれと一体化し、ケーシング８または堰の上流側には漂流物の流入を防止するための格子２９を設けたことを特徴とする。[0010]
The small hydroelectric generator according to claim 7 is intended to be installed on a downstream side surface thereof by using an existing weir, and the rotating shaft 6 is set in a horizontal direction. Using a car, a sand discharge gate 26 is provided on the downstream side of the weir of the casing 8 and a sand discharge door 27 is provided at the downstream end of the casing 8 so as to be integrated therewith to prevent the inflow of drifting material into the upstream of the casing 8 or the weir . It is characterized in that a grid 29 is provided .
【００１５】
図５は請求項３の垂直軸風水車を、小水力発電に利用した実施例を示す断面図である。これに示すように、水流が第１流路１から第３流路３へ流れるよう第１流路１と第３流路３をケーシング８の水流下面側即ち堰下流側面側寄りに設け、両流路は各々外側開口部に向かって断面積を拡大し、請求項２（イ）の特徴を有する回転体２０を設けている。該垂直軸風水車は回転軸６を垂直方向にすることも可能ではあるが、本例のように水平方向とすれば、回転翼５の幅を容易に大きくすることができ、大量の流体からエネルギーを吸収できるので、小水力発電装置等に適する。また、回転翼５は下方向に移動するにつれ自重により開き、逆に上方向に移動するにつれ閉じる力が水流の力に加えて働き、回転翼５の開閉動作がより円滑に行われる利点がある。第１流路１は開口部を大きく拡大しているから、堰上部からの水流は一旦溜まり部を形成して下部では加圧され、更に第３流路３によるドラフト効果も加わって、回転翼５を強力に押下し回転体２０を回転させ、回転体２０の外側に設けた発電機１８により発電する。浮遊物は堰またはケーシング８の上流側に格子２９を設けるなどして除去するが、堰への砂礫の堆積防止策として、本例では排砂門２６を設けており、増水時には排砂扉２７を上方向にスライドさせて開門させる構造としている。但し、図では排砂扉２７を引き揚げまたは押下する駆動装置の表示を省略している。本発電装置の容量以上の増水時には、堰及び本装置を自由に越えて流出させる。[0015]
FIG. 5 is a sectional view showing an embodiment in which the vertical axis wind turbine of claim 3 is used for small hydroelectric power generation. As shown in the figure, the first flow path 1 and the third flow path 3 are provided on the lower surface side of the water flow of the casing 8, that is, on the downstream side of the weir so that the water flow flows from the first flow path 1 to the third flow path 3. Each of the flow paths has a cross-sectional area enlarged toward the outer opening, and is provided with a rotating body 20 having the feature of claim 2 (a). The vertical axis wind turbine can make the rotating shaft 6 vertical, but if the rotating shaft 6 is made horizontal as in this example, the width of the rotating blade 5 can be easily increased, and a large amount of fluid can be removed. Because it can absorb energy, it is suitable for small hydro power generation equipment . Further, as the rotor 5 moves downward, it opens by its own weight, and conversely, as it moves upward, a closing force acts in addition to the force of the water flow, and there is an advantage that the opening and closing operation of the rotor 5 is performed more smoothly. . Since the opening of the first flow path 1 is greatly enlarged, the water flow from the upper part of the weir once forms a pool part and is pressurized in the lower part, and the draft effect by the third flow path 3 is added. 5 is pressed strongly to rotate the rotating body 20, and the generator 18 provided outside the rotating body 20 generates electric power. Floating matter is removed by providing a grid 29 on the upstream side of the weir or casing 8 , for example, as a measure for preventing the accumulation of gravel on the weir, a sand discharge gate 26 is provided in this example. Is slid upward to open the gate. However, in the figure, the display of the driving device for lifting or pressing the sand discharging door 27 is omitted. When the water volume exceeds the capacity of the power generator, the water is allowed to flow freely over the weir and the device .
【００１６】
図６は請求項３に関わる請求項４の垂直軸風水車を、小水力発電に利用した実施例を示す斜視図、図７はそのＸ-Ｘ線における断面図、図４は該水車用の回転翼５の断面図である。回転翼５内部の先端寄りには翼空洞５Ｃが設けられており、水中で浮力が発生する。これにより、前記図５の例とは逆に回転翼５は上方向に移動するにつれ開き、逆に下方向に移動するにつれ閉じる力が水流の力に加えて働き。回転翼５の開閉動作が円滑に行われる。第１流路１及び第３流路３はケーシング８の水流上面側寄りに設け、各々その断面積を外側開口部に向かって拡大しているが、その効果は前記例と同様である。排砂門２６及び排砂扉２７の働きも前記例と同様である。このような構造の小水力発電装置は、堰の下流側面の傾斜が緩やかな場合に、前記請求項３の発電装置に比較して回転翼５が水流を受ける有効長さをやや大きくできるため、有利である。[0016]
6 is a perspective view showing an embodiment in which the vertical axis wind turbine according to claim 3 is used for small hydroelectric power generation, FIG. 7 is a cross-sectional view taken along the line XX, and FIG. It is sectional drawing of the rotary wing 5 of FIG. A wing cavity 5C is provided near the tip inside the rotary wing 5, and buoyancy is generated in water. Thus, contrary to the example of FIG. 5, the rotating blade 5 opens as it moves upward, and closes as it moves downward , in addition to the force of the water flow . The opening and closing operation of the rotary wing 5 is performed smoothly. The first flow path 1 and the third flow path 3 are provided near the upper surface of the water flow of the casing 8, and the cross-sectional area thereof is enlarged toward the outer opening, but the effect is the same as in the above-described example. The functions of the sand discharging gate 26 and the sand discharging door 27 are the same as those in the above-described example. Since the small hydroelectric power generator having such a structure can have a slightly larger effective length of the rotary wing 5 receiving the water flow than the power generator according to claim 3, when the slope of the downstream side surface of the weir is gentle, It is advantageous.
【００２０】
図１４は請求項３の垂直軸風水車を用いた、請求項７の小水力発電装置の実施例を示す軸直角方向断面図である。但し、排砂扉２７の駆動装置は表示を省略している。これに示すように、堰の上流側には格子２９が水流幅方向に対して傾斜して設けられているので、流木等の漂流物は堰の片側へ寄せられ、除去される。ケーシング８の堰下流側面側にそれと一体化して設けられた排砂門２６の上流側は本装置の上部で開口し、下流側端は排砂扉２７で閉じられているため、格子を通過した砂礫は排砂門２６の下流側に落下し堆積する。排砂扉２７は定期的にあるいは増水時に具備した駆動手段により開けられるので、堆積した砂礫はこの時排出される。そして、請求項３の垂直軸風水車の実施例で述べたと同様にして、水流により水車２０が回転する。また、請求項４の垂直軸風水車を用いた請求項７の小水力発電装置については、図１４に於いて発電装置をそれと置換しただけで、格子２９及び排砂門２６と排砂扉２７の働きは上記と全く同様である。[0020]
FIG. 14 is a sectional view in the direction perpendicular to the axis showing an embodiment of the small hydroelectric generator according to claim 7 using the vertical axis wind turbine according to claim 3. However, the display of the driving device of the sand discharging door 27 is omitted. As shown in this figure, since the grid 29 is provided on the upstream side of the weir so as to be inclined with respect to the width direction of the water flow, drifting substances such as driftwood are brought to one side of the weir and removed. The upstream side of a sand discharge gate 26 integrally provided on the downstream side of the weir of the casing 8 is opened at the upper part of the present apparatus, and the downstream end is closed by a sand discharge door 27, so that it passed through the lattice. The gravel falls and accumulates on the downstream side of the sand discharge gate 26. Since the sand discharging door 27 is opened periodically or by a driving means provided when the water is increased, the accumulated sand and gravel is discharged at this time. Then, the water wheel rotates the water wheel 20 in the same manner as described in the embodiment of the vertical axis wind turbine of claim 3. Further, in the small hydroelectric generator according to claim 7 using the vertical axis wind turbine according to claim 4, the grid 29, the sand discharge gate 26 and the sand discharge door 27 are obtained by simply replacing the power generator in FIG. Works exactly as described above.
【００２４】
請求項３の垂直軸風水車は、請求項２の垂直軸風水車を一方向流に利用できるようにしたもので、回転翼５の凸面側が閉じる構造を小水力発電装置等に利用し、従来構造のものより効率を改善することができる。[0024]
The vertical axis wind turbine according to claim 3 is such that the vertical axis wind turbine according to claim 2 can be used for one-way flow, and the structure in which the convex side of the rotary wing 5 is closed is used for a small hydraulic power generator or the like. Efficiency can be improved over that of the structure.
