Invention Grant
US08834092B2 Fluid machine, wind turbine, and method for increasing velocity of internal flow of fluid machine, utilizing unsteady flow
有权
流体机械，风力发电机和利用不稳定流量增加流体机械内部流速的方法
- Patent Title: Fluid machine, wind turbine, and method for increasing velocity of internal flow of fluid machine, utilizing unsteady flow
- Patent Title (中): 流体机械，风力发电机和利用不稳定流量增加流体机械内部流速的方法
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Application No.: US13259209Application Date: 2010-03-15
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Publication No.: US08834092B2Publication Date: 2014-09-16
- Inventor: Yuji Ohya , Takashi Karasudani , Kimihiko Watanabe
- Applicant: Yuji Ohya , Takashi Karasudani , Kimihiko Watanabe
- Applicant Address: JP Fukuoka
- Assignee: Kyushu University, National University Corporation
- Current Assignee: Kyushu University, National University Corporation
- Current Assignee Address: JP Fukuoka
- Agency: Sughrue Mion, PLLC
- Priority: JP2009-072293 20090324
- International Application: PCT/JP2010/001809 WO 20100315
- International Announcement: WO2010/109800 WO 20100930
- Main IPC: F03D1/04
- IPC: F03D1/04 ; F03B13/26
Abstract:
A fluid machine, a wind turbine, and a method for increasing velocity of an internal flow is provided. A basic shape of the casing has a cycloid curve having a convex portion at a throat section between the front and rear edges. The throat section and a vortex generating face disposed downstream of the throat section to generate the negative pressure region are formed on an inner circumferential face of the casing. A first outflow gradient is formed on an outer circumferential face of the casing and at the rear edge. 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 by virtue of the non-streamline shaped casing to increase the velocity of the internal flow.
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