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1. WO2000041290 - MAGNETIC CIRCUIT STRUCTURE

Publication Number WO/2000/041290
Publication Date 13.07.2000
International Application No. PCT/FI1999/001082
International Filing Date 28.12.1999
IPC
F16C 39/06 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; 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
39Relieving load on bearings
06using magnetic means
CPC
F16C 32/0459
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
32Bearings not otherwise provided for
04using magnetic or electric supporting means
0406Magnetic bearings
044Active magnetic bearings
0459Details of the magnetic circuit
F16C 32/0476
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
32Bearings not otherwise provided for
04using magnetic or electric supporting means
0406Magnetic bearings
044Active magnetic bearings
0474for rotary movement
0476with active support of one degree of freedom, e.g. axial magnetic bearings
Applicants
  • HIGH SPEED TECH OY LTD. [FI/FI]; Tekniikantie 4 D FIN-02150 Espoo, FI (AllExceptUS)
  • LINDGREN, Olli [FI/FI]; FI (UsOnly)
Inventors
  • LINDGREN, Olli; FI
Agents
  • TAMPEREEN PATENTTITOIMISTO OY; Hermiankatu 6 FIN-33720 Tampere, FI
Priority Data
98283030.12.1998FI
Publication Language English (EN)
Filing Language Finnish (FI)
Designated States
Title
(EN) MAGNETIC CIRCUIT STRUCTURE
(FR) STRUCTURE DE CIRCUIT MAGNETIQUE
Abstract
(EN)
The invention relates to a magnetic circuit structure in an apparatus in which the first machine means is a stator (1) with a winding (3) and the second machine means is a rotor (2). The magnetic circuit is arranged to generate a force effective between the stator (1) and the rotor (2) in the axial direction of the rotor (2), particularly to provide axial magnetic bearing. The separation between the parts of the magnetic circuit effective in the stator (1) on one hand and in the rotor (2) on the other hand is arranged in that part of the magnetic circuit in which the direction of the magnetic flux deviates from the axial direction of the rotor (2), and that the different parts of the magnetic circuit are partly adjacent to each other in the axial direction of the rotor (2), to direct the magnetic flux effective in the magnetic circuit at least partly in the axial direction of the rotor (2).
(FR)
L'invention concerne une structure de circuit magnétique d'un appareil dans lequel le premier dispositif est un stator (1) doté d'un enroulement (3) et le second dispositif est un rotor (2). Le circuit magnétique est conçu pour générer une force agissant entre le stator (1) et le rotor (2) dans le sens de l'axe du rotor (2), notamment afin de constituer un palier magnétique axial. La séparation entre les parties du circuit magnétique fonctionnant dans le stator (1), d'une part, et dans le rotor (2), d'autre part, est disposée dans la partie du circuit magnétique où le sens du flux magnétique se détourne du sens axial du rotor (2). Par ailleurs, les différentes parties du circuit magnétique sont partiellement adjacentes l'une par rapport à l'autre dans le sens de l'axe du rotor (2), de manière que le flux magnétique du circuit magnétique soit au moins partiellement dirigé dans le sens de l'axe du rotor (2).
Also published as
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