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1. 发明申请

US20040076510A1 Turbo/drag pump having a composite skirt 失效
标题翻译：涡轮/拖拉泵具有复合裙
公开(公告)号：US20040076510A1
公开(公告)日：2004-04-22
申请号：US10682200
申请日：2003-10-10
申请人： ALCATEL
发明人： Lionel Favre-Felix , Olivier Dauvillier , Andre Bouille
IPC分类号： F01D001/36
CPC分类号： F04D29/023 , F04D19/042 , F04D19/044 , F05D2300/10 , F05D2300/43 , F05D2300/603
摘要： The invention provides a rotor for a turbo/drag vacuum pump, the rotor comprising an upstream rotor segment of the turbine type made of metal or alloy, and a downstream rotor segment of Holweck type made of composite material. The downstream segment of the rotor has a reinforcing structure made of long fibers that are distributed in a manner that varies as a function of the section under consideration: in the annular connection region connected to the upstream segment of the rotor, the fibers are inclined and/or spaced apart in order to conserve sufficient flexibility for the composite material to enable it to deform so as to track deformation of the metal of the upstream rotor segment while it is in operation; in contrast, the fibers are close together and form turns that touch in the downstream region of the skirt, thereby guaranteeing greater stiffness in order to withstand the mechanical stresses that occur during high-speed rotation of the rotor in operation. It is thus possible to make a rotor with a Holweck type skirt that is of greater diameter, thereby improving the properties of the pump.
摘要翻译：本发明提供了一种用于涡轮/拖拉真空泵的转子，该转子包括由金属或合金制成的涡轮机类的上游转子段和由复合材料制成的Holweck型下游转子段。转子的下游段具有由长纤维制成的加强结构，其以考虑到的部分的函数的形式分布;在连接到转子的上游段的环形连接区域中，纤维是倾斜的，并且 /或间隔开，以便为复合材料节省足够的柔性，使其能够变形，以便跟踪上游转子段的金属在其运行时的变形; 相比之下，纤维靠近在一起并形成在裙部的下游区域中接触的匝，从而保证更大的刚度，以便经受在操作中转子的高速旋转期间发生的机械应力。因此，可以制造具有更大直径的Holweck型裙部的转子，从而提高泵的性能。

2. 发明申请

US20030102747A1 Use of zirconia balls for the landing bearings in molecular drag pumps on magnetic bearings 审中-公开
标题翻译：在磁轴承上使用分子阻力泵中的氧化锆球用于着陆轴承
公开(公告)号：US20030102747A1
公开(公告)日：2003-06-05
申请号：US10278804
申请日：2002-10-24
申请人： ALCATEL
发明人： Rainer Mathes , Andre Bouille
IPC分类号： H02K007/09
CPC分类号： F04D29/0566 , F04D19/048 , F04D29/058 , F04D29/059 , F16C32/0442 , F16C33/303 , F16C33/32 , F16C39/02 , F16C2360/45
摘要： According to the invention, a landing bearing for a vacuum pump comprises a rotor ball race and a coaxial stator ball race with rolling elements placed between them, housed one after another and rolling on respective rolling tracks of the rotor and stator ball races. The rolling elements comprise a succession of rolling elements having outside surfaces made of zirconium dioxide. This reduces the resistance of the landing bearing to acceleration, while nevertheless providing good resistance to chemical attacks from process gases and plasmas.
摘要翻译：根据本发明，用于真空泵的着陆轴承包括转子球座圈和同轴定子球座圈，滚动元件放置在它们之间，一个接一个地容纳并且在转子和定子球座的相应滚动轨道上滚动。滚动元件包括具有由二氧化锆制成的外表面的一系列滚动元件。这降低了着陆轴承对加速度的阻力，同时仍然提供了良好的抗过程气体和等离子体的化学侵蚀。

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