| 摘要 |
A magnetic turntable, comprises adjacent permanent magnets (311, fig.13) arranged with alternating polarities being positioned to a mounting disc 35; characterized in that: a magnet group 31 assembled by a plurality of permanent magnets arranged with alternating polarities being housed in a first through hole (351, fig.14) of the mounting disc, the top portion of the mounting disc (35) having a nonmagnetic cover 32 which arranges axially successive flanges (323, 324) along the inner and outer rims of the cover; a magnetic bottom board 33 provided at the bottom of the mounting disc; the bottom board , the mounting disc and the cover being connected together by fixed blocks 36,37, cooperating with lugs of the cover; a transmission shaft (4, fig.3) penetrating a blind hole at the centre of the mounting disc, the shaft having a radially transmission arm (42, fig.5). Conductor cuts more magnetic lines in the strong magnetic field caused by turning the magnetic turntable in the case of no AC power, therefore, the magnetic turntable can obtain higher efficiency of magnetocaloric effect. |
