PUMP ASSEMBLIES WITH SEALING
    4.
    发明申请

    公开(公告)号:US20190195234A1

    公开(公告)日:2019-06-27

    申请号:US16329582

    申请日:2017-08-14

    Inventor: Paul Milner

    CPC classification number: F04D29/083 F04D19/04 F04D19/042 F04D29/64 F04D29/644

    Abstract: A pump casing assembly has a first body part, a second body part and a seal disposed between the first and second body parts. The first body part has a first face that defines a recess to receive the seal and the second body part has a first face disposed opposite the first face of the first body part and defining a first sealing surface engaged by the seal and a projection extending beyond the first sealing surface into the recess.

    GAS ESTIMATION DEVICE AND VACUUM PUMPING DEVICE

    公开(公告)号:US20190107110A1

    公开(公告)日:2019-04-11

    申请号:US16132389

    申请日:2018-09-15

    Abstract: A gas estimation device for estimating a flow rate and a gas type of gas to be vacuum-pumped by a vacuum pumping device including a vacuum pump and an automatic pressure control valve connected to a suction port of the vacuum pump, comprises: a correlation data storage section configured to store first correlation data containing correlation data regarding an opening degree control gain value of the automatic pressure control valve and correlation data regarding an effective exhaust velocity of the vacuum pumping device and second correlation data indicating a correlation among a flow rate, a gas type, and a motor current value in the vacuum pump; and a first estimation section configured to estimate the flow rate and the gas type of the gas to be vacuum-pumped by the vacuum pumping device based on at least the first correlation data and the second correlation data.

    Method for predicting a rotation fault in the rotor of a vacuum pump, and associated pumping device
    9.
    发明授权
    Method for predicting a rotation fault in the rotor of a vacuum pump, and associated pumping device 有权
    用于预测真空泵的转子中的旋转故障的方法以及相关的泵送装置

    公开(公告)号:US09534609B2

    公开(公告)日:2017-01-03

    申请号:US13380761

    申请日:2010-06-24

    Abstract: The invention pertains to a method for predicting a failure in the rotation of the rotor of a vacuum pump, comprising the following steps: sequences of events related to the change over time of the vacuum pump functional signals are recorded (101), a match is sought between at least one sequence of events and at least one pre-established association rule precursory pattern of a vacuum pump behavior model within the recorded sequences of events, said pre-established association rule's precursory patterns involving a failure in the rotor rotation (102), and a time prediction window is deduced during which a failure in the rotor rotation will occur in a vacuum pump (103). The invention also pertains to a pumping device comprising: a vacuum pump (7) comprising at least one rotor and one pump body, said rotor having the potential to be driven rotationally within said pump body by a motor of said pump (7), a functional signal sensor (9) of said pump (7), and a means of predicting (10) a time prediction window during which a failure in the rotor rotation will occur in the vacuum pump (7), said means for prediction (10) calculating the predictive time window based on measurements provided by said functional signal sensor (9).

    Abstract translation: 本发明涉及一种用于预测真空泵转子故障的方法,包括以下步骤:记录与真空泵功能信号随时间变化相关的事件序列(101),匹配是 在所记录的事件序列中,在所述预先确定的关联规则的涉及转子旋转故障(102)的前兆模式之间寻求至少一个事件序列和至少一个预先建立的真空泵行为模型的关联规则前兆模式, ,并且推导出在真空泵(103)中将发生转子旋转故障的时间预测窗口。 本发明还涉及一种泵送装置,其包括:真空泵(7),其包括至少一个转子和一个泵体,所述转子具有通过所述泵(7)的马达在所述泵体内旋转驱动的潜力, 所述泵(7)的功能信号传感器(9)和预测(10)在真空泵(7)内将发生转子转动故障的时间预测窗口的装置,所述预测装置(10) 基于由所述功能信号传感器(9)提供的测量值来计算预测时间窗口。

    Sensorless magnetic levitation vacuum pump and sensorless magnetic levitation device
    10.
    发明授权
    Sensorless magnetic levitation vacuum pump and sensorless magnetic levitation device 有权
    无传感器磁悬浮真空泵和无传感器磁悬浮装置

    公开(公告)号:US09506475B2

    公开(公告)日:2016-11-29

    申请号:US14370506

    申请日:2012-12-21

    Abstract: An electromagnet has a core with a pair of magnetic poles, a primary coil wound around the core, and a series circuit of a first auxiliary coil wound around the first magnetic pole of the core, a second auxiliary coil wound around the second magnetic pole of the core, and capacitors, and is connected in parallel to the primary coil and the series circuit. The first and the second magnetic poles are each divided into a plurality of split magnetic poles. The first auxiliary coil is composed of a plurality of split auxiliary coils wound around the respective pole in the plurality of split magnetic poles of the first magnetic pole so that the mutual inductance with the primary coil becomes zero. The second auxiliary coil is composed of a plurality of split auxiliary coils wound around the respective pole in a plurality of split magnetic poles of the second magnetic pole so that the mutual inductance with the primary coil becomes zero.

    Abstract translation: 电磁体具有芯体,具有一对磁极,缠绕在磁芯上的初级线圈和缠绕在磁芯的第一磁极上的第一辅助线圈的串联电路,绕第二磁极缠绕的第二辅助线圈 核心和电容器,并联并联到初级线圈和串联电路。 第一和第二磁极分别分成多个分开的磁极。 第一辅助线圈由在第一磁极的多个分割磁极中的各极上缠绕的多个分割辅助线圈组成,使得与初级线圈的互感为零。 第二辅助线圈由在第二磁极的多个分割磁极中缠绕在各极上的多个分割辅助线圈构成,使得与初级线圈的互感为零。

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