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    Method and apparatus for supplying oil to a vacuum pump
    1.
    发明授权
    Method and apparatus for supplying oil to a vacuum pump 失效
    将油提供给真空泵的方法和装置

    公开(公告)号：US5178522A

    公开(公告)日：1993-01-12

    申请号：US704351

    申请日：1991-05-23

    申请人： Thomas Abelen ,  Lutz Arndt ,  Winfried Kaiser ,  Peter Muller ,  Dieter Vorberg

    发明人： Thomas Abelen ,  Lutz Arndt ,  Winfried Kaiser ,  Peter Muller ,  Dieter Vorberg

    IPC分类号： F04C23/00 ,  F04C25/02 ,  F04C29/02

    CPC分类号： F04C29/02

    摘要： A two-stage rotary vane vacuum pump includes a pre-vacuum stage having a pre-vacuum pumping chamber and an outlet valve; a main oil sump; and a first oil conduit having a first opening communicating with the main oil sump and a second opening communicating with the pre-vacuum pumping chamber. The first opening is located at a level below an operational oil level in the main oil sump. There is further provided an intermediate oil sump situated at a level above the outlet valve and being arranged for receiving oil from the pre-vacuum pumping chamber; and a second oil conduit leading from the intermediate oil sump to components of the vacuum pump to be supplied with oil. All such components are situated at a level below the intermediate oil sump.

    摘要翻译： 两级旋片式真空泵包括具有预真空泵送室和出口阀的预真空级; 主油槽 以及第一油管，其具有与所述主油槽连通的第一开口和与所述预真空泵送室连通的第二开口。 第一个开口位于主油底壳的工作油位以下。 还设置有位于出口阀上方的中间油底壳，并被布置成从预真空泵送室接收油; 以及从中间油底壳引导到真空泵部件的第二油管，供给油。 所有这些部件位于中间油底壳的下方。

    Rotary vane vacuum pump with shaft seal
    2.
    发明授权
    Rotary vane vacuum pump with shaft seal 失效
    旋转式真空泵，带轴封

    公开(公告)号：US5156532A

    公开(公告)日：1992-10-20

    申请号：US707040

    申请日：1991-05-29

    申请人： Lutz Arndt ,  Peter Muller ,  Dieter Vorberg

    发明人： Lutz Arndt ,  Peter Muller ,  Dieter Vorberg

    IPC分类号： F04C18/344 ,  F04C25/02 ,  F04C29/00

    CPC分类号： F04C29/005 ,  Y10T403/7021

    摘要： A rotary vane vacuum pump includes a pump housing; a bearing support having a bearing bore; a drive motor having an output shaft extending into the bearing bore; and a pump rotor accommodated in the pump housing and having a rotor shaft extending into the bearing bore. The rotor shaft and the output shaft have respective radial end faces oriented towards one another and the output shaft and the rotor shaft have identical diameters. There is further provided a torque-transmitting coupling connecting the output shaft with the rotor shaft at respective radial end faces thereof; a first sealing ring situated in the bore and sealingly surrounding the output shaft; a second sealing ring situated in the bore and sealingly surrounding the rotor shaft; and a lubricant chamber formed by a part of the bearing bore and being bounded and sealed by the first and second sealing rings.

    摘要翻译： 旋转叶片真空泵包括泵壳体; 具有轴承孔的轴承座; 具有延伸到所述轴承孔中的输出轴的驱动马达; 以及容纳在所述泵壳体中并且具有延伸到所述轴承孔中的转子轴的泵转子。 转子轴和输出轴具有彼此朝向的相应的径向端面，输出轴和转子轴具有相同的直径。 还提供了一个扭矩传递联接器，该扭矩传递联接器在其各自的径向端面处将输出轴与转子轴连接; 位于所述孔中并密封地围绕所述输出轴的第一密封环; 位于所述孔中并密封地围绕所述转子轴的第二密封环; 以及由所述轴承孔的一部分形成并由所述第一和第二密封环限定和密封的润滑剂室。

    Method and apparatus for delivering oil to a multi-stage pump
    3.
    发明授权
    Method and apparatus for delivering oil to a multi-stage pump 失效
    用于将油输送到多级泵的方法和装置

    公开(公告)号：US5066202A

    公开(公告)日：1991-11-19

    申请号：US533535

    申请日：1990-06-05

    申请人： Hanns-Peter Berges ,  Berthold Fischer ,  Peter Mueller ,  Dieter Vorberg

    发明人： Hanns-Peter Berges ,  Berthold Fischer ,  Peter Mueller ,  Dieter Vorberg

    IPC分类号： F04C29/00

    CPC分类号： F04C29/0014 ,  F04C2220/50

    摘要： A method and apparatus for delivering oil into a pump chamber of a high-vacuum stage of a multi-stage pump. The method includes the steps of sensing a first pressure at an intake region of the high-vacuum stage of the pump, and sensing a second pressure at a discharge region of the high-vacuum stage of the pump. Oil is delivered to the high-vacuum stage of the pump in response to a pressure difference between the first and second pressures. Increased quantities of oil are delivered to the high-vacuum stage of the pump when the pressure difference exceeds a predetermined value. A gas ballast may also be delivered to the high-vacuum stage of the pump when the pressure difference exceeds this predetermined value. The apparatus may include a diaphragm valve including a diaphragm mounted between subchambers that are respectively in fluid communication with the intake and discharge regions of the high-vacuum stage of the pump. When the pressure differential between the intake and discharge regions, and thus the subchambers, reaches a predetermined level, the diaphragm is distended to a sufficient degree to unseat a valve element, which allows increased quantities of oil to be delivered to the high-vacuum stage of the pump.

    摘要翻译： 一种用于将油输送到多级泵的高真空级的泵室中的方法和装置。 该方法包括以下步骤：感测泵的高真空级的进气区域处的第一压力，并感测泵的高真空级的排出区域的第二压力。 响应于第一和第二压力之间的压力差，将油输送到泵的高真空级。 当压力差超过预定值时，增加的油量被输送到泵的高真空级。 当压力差超过该预定值时，气体镇流器也可以被输送到泵的高真空级。 该装置可以包括隔膜阀，其包括安装在分别与泵的高真空级的进入和排出区域流体连通的子室之间的隔膜。 当进气和排出区域之间的压力差，从而达到预定水平时，隔膜膨胀到足够的程度来使阀元件脱离，这允许更多量的油被输送到高真空级 的泵。