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1. (WO1979000987) MAGNETIC BEARING
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1979/000987 International Application No.: PCT/DE1979/000047
Publication Date: 29.11.1979 International Filing Date: 25.04.1979
IPC:
F16C 39/06 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
C
SHAFTS; FLEXIBLE SHAFTS; MECHANICAL MEANS FOR TRANSMITTING MOVEMENT IN A FLEXIBLE SHEATHING; ELEMENTS OF CRANKSHAFT MECHANISMS; PIVOTS; PIVOTAL CONNECTIONS; ROTARY ENGINEERING ELEMENTS OTHER THAN GEARING, COUPLING, CLUTCH OR BRAKE ELEMENTS; BEARINGS
39
Relieving load on bearings
06
using magnetic means
Applicants:
Inventors:
Priority Data:
281825526.04.1978DE
Title (EN) MAGNETIC BEARING
(FR) PALIER MAGNETIQUE
Abstract:
(EN) A magnetic bearing comprises permanent ring-shaped or disc-shaped magnets (4 to 7, 8 to 11), arranged in a corresponding manner on a rotor (1) and a stator (2) so that magnetic repulsion forces are generated providing passive stabilization of the rotor. At least one electric winding (14 to 18) is provided besides or between the permanent magnets (8 to 11) in particular of the stator (2), so as to generate a force component acting transversally with respect to the afore-mentioned repulsion forces. The permanent magnets (4 to 7) of the rotor (1) as well as the permanent magnets (8 to 11) of the stator (2) may be arranged respectively next to each other with respect to the rotational axis (3), so that there is an annular air gap extending in the axial direction. Hence, adjustable stabilization forces acting on the rotor (1) in the direction of the rotational axis (3) may be generated by means of annular windings (14 to 18). The windings (14 to 18) are controlled through an adjusting device (20) according to signals transmitted by a sensitive element (21), these signals corresponding to the axial gap of the rotor (1) with respect to its ordered position determined by the permanent magnets (4 to 7, 8 to 11). For a long rotor, such a bearing may be provided at each end of the rotor.
(FR) Palier magnetique comprenant des aimants permanents (4 a 7, 8 a 11) en forme d"anneaux ou de disques, disposes de maniere correspondante sur un rotor (1) et un stator (2) de telle facon que des forces de repulsion magnetique soient engendrees et assurent une stabilisation passive du rotor. Au moins un enroulement electrique (14 a 18) est prevu a cote ou entre les aimants permanents (8 a 11), notamment du stator (2) afin d"engendrer une composante de force agissant transversalement par rapport aux forces de repulsion precite es. Les aimants permanents (4 a 7) du rotor (1) ainsi que les aimants permanents (8 a 11) du stator (2) peuvent etre disposes respectivement les uns a cote des autres relativement a l"axe de rotation (3), de sorte qu"il existe un entrefer annulaire s"etendant en direction axiale. Ainsi des forces de stabilisation reglables et agissant sur le rotor (1) en direction de l"axe de rotation (3) peuvent etre engendrees au moyen des enroulements annulaires (14 a 18). Les enroulements (14 a 18) sont commandes par l"intermediaire d"un dispositif de reglage (20) en fonction des signaux emis par un element sensible (21), ces signaux correspondant a l"ecart axial du rotor (1) par rapport a sa position de consigne determinee par les aimants permanents (4 a 7, 8 a 11). Pour un rotor de grande longueur, un tel palier peut etre prevu a chaque extremite du rotor.
Designated States:
Publication Language: German (DE)
Filing Language: German (DE)
Also published as:
EP0014209US4340261GB2043800