发明名称 A stator for a turbo-molecular pump.
摘要 <p>A stator for a turbo-molecular pump wherein each stator disc has a frusto-conical shape for the tilted orientation of the blades (4, 4a), is divided into two semicircular parts (1, 2) having fastening tongues (12, 12a) at their inside, and is equipped along its circular outer edges (6, 6a) with projecting radial tabs (10, 10a) for fastening the stator disc between two adjacent spacer rings (18). Thanks to this characteristic the gas back streaming that may be estabished through the interstices (20) between the stator and the pump housing (13) and directed towards the suction side of the pump, can reach the inside space of the stator and thus to be pumped away. <IMAGE></p>
申请公布号 EP0442556(B1) 申请公布日期 1994.03.23
申请号 EP19910200172 申请日期 1991.01.29
申请人 VARIAN S.P.A. 发明人 CASARO, FAUSTO;INSERRA, DARIO;LEVI, GIAMPAOLO;PELLIZZARI, PAOLO
分类号 F04D19/04;F04D29/54;(IPC1-7):F04D19/04 主分类号 F04D19/04
代理机构 代理人
主权项
地址