Permanent-magnet magnetic field generator
AssigneeShin-Etsu Chemical Co., Ltd.
InventorDai Higuchi
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Abstract
A high-performance variable-magnetic-field dipole-ring magnetic circuit is provided. Specifically, provided is a permanent-magnet magnetic field generator having inner and outer dipole rings which share a central axis, and a yoke which surrounds the dipole rings, wherein a unidirectional variable magnetic field is generated in a space within the inner dipole ring. The generator has a fastener for fixing the inner dipole ring, and a rotator for allowing the outer dipole ring to rotate around the central axis. In the generator, each of the inner and outer dipole rings has a plurality of permanent magnets arranged in such a ring shape that a magnetization direction of the permanent magnets can make a full rotation per half circle of the ring.
Claims8
A permanent-magnet magnetic field generator comprising:
- inner and outer dipole rings which share a central axis,
- a yoke which surrounds the dipole rings,
- a fastener for rotationally fixing the inner dipole ring relative to the central axis, and
- a rotator for allowing the outer dipole ring to rotate around the central axis, wherein
- a unidirectional variable magnetic field is generated in a space within the inner dipole ring,
- each of the inner and outer dipole rings has a plurality of permanent magnets arranged in a ring shape, and
- the plurality of permanent magnets in each of the dipole rings are arranged in such a way as to allow a magnetization direction of the permanent magnets to make a full rotation per half circle of the ring.
Dependencies are inferred from the claim text.