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AssigneeHNP Mikrosysteme GmbH
InventorsAstrid Matz, Sven Reimann, Martin Stojke, Gerald Voegele, Thomas Weisener
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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).
A pump arrangement comprising a micropump (P) for pumping a liquid and comprising a bearing carrier (22) as a base part, wherein an outer magnet (44) and an inner magnet (40) are provided to transmit a rotary magnetic field to the micropump (P) for rotating the micropump via an axial shaft (10), and wherein
A pump arrangement comprising a micropump (P) for pumping a liquid and comprising a bearing carrier (22) as a base part, wherein an outer magnet (44) and an inner magnet (40) are provided, to magnetically couple a rotary movement to the micropump (P) via an axial shaft (10), and wherein
A pump arrangement comprising a magnetically drivable micropump (P) for pumping a fluid pumping medium and comprising a bearing carrier (22) as a base part, wherein an outer magnet (44) and an inner magnet (40) are provided, magnetically coupling a rotary movement to the micropump (P) via an axial shaft (10), wherein the pump arrangement having a pressure side and a suction side;
A method for pumping a fluid, wherein a rotary movement is transmitted to a micropump (P) via an axial shaft (10) and comprising a pump arrangement, comprising the micropump (P) for pumping a liquid and comprising a bearing carrier (22) as a base part, wherein an outer magnet (44) and an inner magnet (40) are provided to transmit a rotary magnetic field to the micropump (P) for rotating the micropump via the axial shaft (10), and wherein
Dependencies are inferred from the claim text.