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1. 发明申请

WO1998002643A1 MICROTURBOMACHINERY 审中-公开
公开(公告)号：WO1998002643A1
公开(公告)日：1998-01-22
申请号：PCT/US1997012137
申请日：1997-07-14
申请人： MASSACHUSETTS INSTITUTE OF TECHNOLOGY
发明人： MASSACHUSETTS INSTITUTE OF TECHNOLOGY , EPSTEIN, Alan, H. , SENTURIA, Stephen, D. , WAITZ, Ian, A. , LANG, Jeffrey, H. , JACOBSON, Stuart, A. , EHRICH, Fredric, F. , SCHMIDT, Martin, A. , ANANTHASURESH, G., K. , SPEARING, Mark, S. , BREUER, Kenneth, S. , NAGLE, Steven, F.
IPC分类号： F01D05/28
CPC分类号： F23R3/42 , F01D5/28 , F01D15/06 , F01D25/20 , F01K13/00 , F02C3/05 , F02K9/48 , F05D2220/50 , F05D2230/14 , F05D2250/82 , F05D2250/84 , F05D2300/2261 , F05D2300/2283 , F05D2300/607 , F23C2900/03001
摘要： The invention provides a micro-gas turbine engine and associated microcomponentry. The engine components, including, e.g., a compressor, a diffuser having diffuser vanes, a combustion chamber, turbine guide vanes, and a turbine are each manufactured by, e.g., microfabrication techniques, of a structural material that can be common to all of the elements, e.g., a microelectronic material such as silicon or silicon carbide. Vapor deposition techniques, as well as bulk wafer etching techniques, can be employed to produce the engine. The engine includes a rotor having a shaft with a substantially untapered compressor disk on a first end, defining a centrifugal compressor, and a substantially untapered turbine disk on the opposite end, defining a radial inflow turbine. The rotor is preferably formed of a material characterized by a strength-to-density ratio that enables a rotor speed of at least about 500,000 rotations per minute. An annular, axial-flow combustion chamber is provided that is located axially between the compressor and turbine disks and that has a ratio of annular height to axial length of at least about 0.5. The micro-gas turbine engine can be configured with an integral microgenerator as a source of electrical power, and can be employed for a wide range of power, propulsion, and thermodynamic cycle applications.
摘要翻译：本发明提供一种微型燃气涡轮发动机和相关的微型部件。包括例如压缩机，具有扩散器叶片的扩散器，燃烧室，涡轮引导叶片和涡轮机的发动机部件各自通过例如微细加工技术来制造，所述结构材料可以是所有的元件，例如微电子材料，例如硅或碳化硅。可以采用气相沉积技术以及体晶片蚀刻技术来制造发动机。发动机包括具有轴的转子，其具有在第一端上具有基本上未经紧固的压缩机盘，限定离心压缩机的轴和在相对端上的基本上未配套的涡轮盘，限定径向流入涡轮机。转子优选地由特征在于强度与密度之比的材料形成，其能够使转子速度为每分钟至少大约50万转。提供了一种环形的轴向流动燃烧室，其轴向位于压缩机和涡轮盘之间，并且具有至少约0.5的环形高度与轴向长度的比率。微型燃气涡轮发动机可以配置有一个整体的微型发电机作为电力来源，并且可以用于广泛的动力，推进和热循环应用。

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