发明名称 |
VACUUM PUMP |
摘要 |
<p>A vacuum pump comprises a drive shaft and a Siegbahn pumping mechanism. The Siegbahn pumping mechanism comprises a rotor element located on the drive shaft and an annular stator element located about the drive shaft and proximate the rotor element, the stator element comprising a plurality of walls extending towards the rotor element and defining a plurality of spiral channels. The stator element comprises a plurality of sections, with means such as a resilient member being located about the sections to urge the sections together, and thereby inhibit gas leakage between the sections of the stator element. The resilient member can also form a seal between the stator sections and a casing located about the pumping mechanism.</p> |
申请公布号 |
EP2064448(B1) |
申请公布日期 |
2013.06.05 |
申请号 |
EP20070766464 |
申请日期 |
2007.07.27 |
申请人 |
EDWARDS LIMITED |
发明人 |
TOLLNER, MARTIN, ERNST;BREWSTER, BARRIE, DUDLEY |
分类号 |
F04D17/16;F04D19/04;F04D29/04 |
主分类号 |
F04D17/16 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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