Rotodynamic machine for the forwarding of a fluid
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United States of America Patent
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-
Mar 28, 2000
Issued Date -
N/A
app pub date -
Apr 3, 1998
filing date -
Oct 6, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A rotordynamic machine for the forwarding of a fluid, such as a turbomachine (2) or a centrifugal pump, has at least one drive and bearing apparatus (1) which is designed as an electrical machine with a stator and with a magnetically journalled rotor (4a). Electrical windings (15, 16) produce the required torque and the magnetic bearing force and are arranged together in the stator. The rotor (4a) forms a section of the shaft (4) of the turbomachine (2) and a control apparatus (7) and excites the two windings (15, 16). A magnetic suspension force acting on the rotor (4a) is produced with the first winding (16) in order to hold the shaft (4) in the radial direction without contact. The torque acting on the rotor (4a) is produced with the second winding (15).
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