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    MAGNETICALLY DRIVEN PUMP ARRANGEMENT HAVING A MICROPUMP WITH FORCED FLUSHING, AND OPERATING METHOD
    1.
    发明申请
    MAGNETICALLY DRIVEN PUMP ARRANGEMENT HAVING A MICROPUMP WITH FORCED FLUSHING, AND OPERATING METHOD 有权

    公开(公告)号：US20130294940A1

    公开(公告)日：2013-11-07

    申请号：US13884088

    申请日：2011-11-15

    申请人： Astrid Matz ,  Sven Reimann ,  Martin Stojke ,  Gerald Voegele ,  Thomas Weisener

    发明人： Astrid Matz ,  Sven Reimann ,  Martin Stojke ,  Gerald Voegele ,  Thomas Weisener

    IPC分类号： F04B19/00

    CPC分类号： F04B19/006 ,  F01C21/02 ,  F04C2/086 ,  F04C2/102 ,  F04C11/008 ,  F04C15/0069 ,  F04C15/0092 ,  F04C15/0096

    摘要： A technical problem (object) of the invention is to achieve a cost-effective construction of a pump arrangement comprising the micropump and to make do with a minimum number of components, which are of the simplest possible design in terms of production and which can be joined together in a precise manner in terms of assembly. In a particular aspect of the problem, complexity of production is to be replaced at least in part by complexity of assembly, whereby necessary close tolerances are also achieved. These are a sine qua non for microsystems and micropumps. In a further aspect of this problem, the micropump is also to be flushed or lubricated in the bearing region, which is a considerable problem at rotational speeds above 5000 rpm. For this purpose, a pump arrangement is proposed, comprising a magnetically drivable micropump (P) for pumping a liquid pumping medium and comprising a bearing carrier (22) as a base part, an outer magnet (44) and an inner magnet (40) being provided, which transmit a torque to the micropump (P) via an axial shaft (10). Three radial bearing pieces (1, 2, 3) for the rotational mounting (guidance) of the shaft (10) and of the micropump (P) are positioned and fixed in the bearing carrier (22), one of the bearings (3) receiving the outer rotor (80) of the micropump in a rotatable manner and being arranged eccentrically with respect to the shaft (10). The micropump (P) is held in the eccentric bearing (3) by a cover (26) arranged at an end. A duct structure (23) for a forced flow is provided, which comprises, on the pressure side, at least one radial duct portion (23b) in the cover (26) and an axial duct portion (23c, 23e) in the bearing carrier (22), in order to flush and/or to lubricate the bearings (1, 2, 3) actively with the pumping medium. One of the bearings (2) is arranged closer to the inner magnet (40) and/or another of the bearings is arranged closer to the micropump (P).