Magnetic field generator
AssigneeHitachi Metals, Ltd.
InventorMasaaki Aoki
Life of this patent
Estimating the term…
Abstract
There is provided a magnetic field generator which is capable of generating a uniform magnetic field of a desired intensity easily and stably without increasing running cost. The magnetic field generator includes a pair of plate yokes. The plate yokes have opposed surfaces provided with magnetic pole respectively. The magnetic pole includes a permanent magnet group whereas the magnetic pole includes a permanent magnet group. Each of the permanent magnet groups is formed substantially in a disc like shape, as an integral body made of a plurality of permanent magnets and a plurality of heat conducting members. Tubular heaters, buried in the plate yokes, generate heat, which is conducted via the plate yokes to each permanent magnet and each heat conducting member which constitute the permanent magnet groups.
Claims17
A magnetic field generator comprising:
- a pair of magnetic poles each including a first permanent magnet group having a plurality of permanent magnets, and a pole piece provided on an end surface of the first permanent magnet group, the pole pieces being faced to each other with a space in between;
- heating means for supplying heat to at least the pair of magnetic poles;
- and
- a heat conducting member made of a nonmagnetic member and provided between mutually adjacent permanent magnets at least in part of the first permanent magnet group, the heat conducting member making contact with each surface of the adjacent permanent magnets.
A magnetic field generator comprising:
- a pair of magnetic poles each including a first permanent magnet group having a plurality of permanent magnets, a pole piece provided in an end surface of the first permanent magnet group, and a plurality of second permanent magnet groups each including a plurality of permanent magnets and provided on an outer side surface of the pole piece, the pole pieces being faced to each other with a space in between;
- heating means for supplying heat to at least the pair of magnetic poles;
- and
- a heat conducting member made of a nonmagnetic member and provided between mutually adjacent second permanent magnet groups at least in part of the second permanent magnet groups, the heat conducting member making contact with each surface of the adjacent permanent magnet groups.
A magnetic field generator comprising:
- a pair of magnetic poles each including a first permanent magnet group having a plurality of permanent magnets, a pole piece provided on an end surface of the first permanent magnet group, and a second permanent magnet group including a plurality of permanent magnets and provided on an outer side surface of the pole piece, the pole pieces being faced to each other with a space in between;
- heating means for supplying heat to at least the pair of magnetic poles;
- and
- a heat conducting member made of a nonmagnetic member and provided between mutually adjacent permanent magnets at least in part of the second permanent magnet group, the heat conducting member making contact with each surface of the adjacent permanent magnets.
Dependencies are inferred from the claim text.