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    • 66. 发明授权
    • FLUID MACHINE UTILIZING UNSTEADY FLOW, WINDMILL, AND METHOD FOR INCREASING VELOCITY OF INTERNAL FLOW OF FLUID MACHINE
    • 随着对增强内部式涡轮机的速度恶劣的江风涡轮机和方法流机
    • EP2412971B1
    • 2017-06-21
    • EP10755604.5
    • 2010-03-15
    • Kyushu University, National University Corporation
    • OHYA, YujiKARASUDANI, TakashiWATANABE, Kimihiko
    • F03D1/04F03D1/06
    • F03D1/04F03B13/264F03D9/25F05B2240/122F05B2240/133F05B2260/99Y02E10/28Y02E10/721Y02P70/523Y02P70/527Y10S415/908Y10S416/02
    • An object is to provide a fluid machine, a wind turbine, and a method for increasing velocity of an internal flow, utilizing an unsteady flow, according to which a casing can be designed and produced easily, a vortex street flow is formed by virtue of the shape of the casing, and a strong negative pressure region is realized on the outlet side so that the velocity of the internal flow is increased. The present invention is primarily characterized in that a basic shape of the casing 2 has a cycloid curve connecting the front edge 2b and the rear edge 2b and having a convex portion at a position axially corresponding to the throat section 2a between the front and rear edges. The throat section 2a and a vortex generating face 2c disposed downstream of the throat section to generate the negative pressure region are formed on an inner circumferential face 201 of the casing 2. A first outflow gradient is formed on an outer circumferential face 202 of the casing 2 and at the rear edge 2d. A second outflow gradient is formed on a boundary of a throat-side adjacent face adjacent to the vortex generating portion to separate the internal flow. The negative pressure region of high vorticity is generated behind the vortex generating face 2c by virtue of the non-streamline shaped casing to increase the velocity of the internal flow.
    • 一个目的是提供一种流体机械,风力涡轮机,以及用于增加内部流动的速度,利用非定常流的方法,雅丁到其上壳体可以被设计和制造容易,涡街流借助于形成 外壳的形状,并且具有强的负压力区,实现在出口侧所以做了内部流动的速度增加。 本发明是在没有外壳2的基本形状具有摆线曲线连接所述前边缘2b和后边缘2b和具有在一个位置的凸部轴向对应于所述前缘和后缘之间的咽喉部2a主要特征在于 , 喉部2a和设置在咽喉部产生的负压区域的下游的涡流产生面2c形成在壳体2的第一流出梯度形成于壳体的外周面202的帧内周面201 2和在后边缘2d上。 第二流出梯度的喉部侧的边界上形成面相对邻近邻近涡流产生部以分离的内部流动。 涡流产生面2c的后方产生借助于非流线形状壳体的涡高的负压区域,以增加内部流动的速度。