VERTICAL WIND SPEED ACCELERATION TYPE WINDMILL

To provide a vertical wind speed acceleration type windmill which increases a wind speed on a windmill back face by collecting winds in all directions, increases a wind speed in an outlet portion of a wind tunnel body and as a result, improves rotation efficiency of blades of the windmill, thereby improving generation power.SOLUTION: The present invention relates to a vertical wind speed acceleration type windmill consisting of a wind collector base, a wind tunnel body and a windmill. A wind inflow part is formed in an entire circumference of the wind collector base. The wind tunnel body consists of: a lower front wind tunnel member which is erected and installed on the wind collector base, of which the cross section is formed substantially rectangular and which is formed in such a manner that a cross-sectional area is reduced in a straight line or curved line manner from a wind inflow port formed at the side of the wind collector base; and an upper wind tunnel member which is formed so as to be expanded in a straight line or curved line manner from a position of the reduced cross-sectional area to a wind outflow port in an upper end. A windmill 21 is installed in a reduction part of the wind tunnel body in such a manner that an interval with a long side part of the wind tunnel body becomes minimum and a ratio of a short side part and the long side part of the wind tunnel body becomes 1 to 10 times.SELECTED DRAWING: Figure 2 【課題】全方位からの風を収集して風車背面の風速を上げると共に風胴体の出口部分の風速を上げる、その結果、風車の羽根の回転効率を向上せしめて、発電電力を高めた縦型風速加速型風車を提供する。【解決手段】風コレクター基台と風胴体と風車と、からなり、風コレクター基台は全周に風流入部がけいせいされ、風胴体は風コレクター基台上に起立設置されて断面略長方形状でその断面積が前記風コレクター基台側に形成された風流入口から直線的又は曲線的に縮小するように形成されている下部前方風胴部材と、その縮小した断面積の位置から上端の風流出口までの間で直線的若しくは曲線的に拡大するように形成された上部風胴部材と、からなり、前記風車２１は風胴体の縮小部に風胴体の長辺部との間隔を最小とし、風胴体の短辺部と長辺部の比を１～１０倍として設置されている縦型風速加速型風車。【選択図】 図２