Permanent magnet structure for generation of magnetic fields
    11.
    发明授权
    Permanent magnet structure for generation of magnetic fields 失效
    用于产生磁场的永磁体结构

    公开(公告)号:US06680663B1

    公开(公告)日:2004-01-20

    申请号:US09814640

    申请日:2001-03-22

    IPC分类号: H01F702

    摘要: A permanent magnet structure for maximizing the flux density per weight of magnetic material comprising a hollow body flux source for generating a magnetic field in the central gap of the hollow body, the magnetic field having a flux density greater than the residual flux density of the hollow body flux source. The hollow body flux source has a generally elliptic-shape, defined by unequal major and minor axis. These elliptic-shaped permanent magnet structures exhibit a higher flux density at the center gap while minimizing the amount of magnetic material used. Inserts of soft magnetic material proximate the central gap, and a shell of soft magnetic material surrounding the hollow body can further increase the strength of the magnetic field in the central gap by reducing the magnetic flux leakage and focusing the flux density lines in the central gap.

    摘要翻译: 一种永磁体结构,用于使每个重量的磁性材料的磁通密度最大化,包括用于在中空体的中心间隙中产生磁场的中空体磁通源,该磁场的磁通密度大于空心体的剩余通量密度 身体通量来源。 中空体通量源具有大致椭圆形,由不等长的主轴和短轴限定。 这些椭圆形永磁体结构在中心间隙处表现出较高的通量密度,同时最小化使用的磁性材料的量。 靠近中心间隙的软磁性材料的插入件和围绕中空体的软磁性材料的壳体可以通过减小磁通量泄漏并将中心间隙中的磁通密度线聚焦,来进一步增加中心间隙中的磁场强度 。

    Ternary Dy-Er-Al magnetic refrigerants
    14.
    发明授权
    Ternary Dy-Er-Al magnetic refrigerants 失效
    三元Dy-Er-Al磁性制冷剂

    公开(公告)号:US5435137A

    公开(公告)日:1995-07-25

    申请号:US88882

    申请日:1993-07-08

    IPC分类号: F25B21/00 H01F1/01

    CPC分类号: H01F1/015 F25B21/00 Y02B30/66

    摘要: A ternary magnetic refrigerant material comprising (Dy.sub.1-x Er.sub.x)Al.sub.2 for a magnetic refrigerator using the Joule-Brayton thermodynamic cycle spanning a temperature range from about 60K to about 10K, which can be adjusted by changing the Dy to Er ratio of the refrigerant.

    摘要翻译: 一种三元磁性制冷剂材料,其包含用于磁性制冷机的(Dy1-xErx)Al2,其使用焦耳 - 布雷顿热力循环跨越约60K至约10K的温度范围,其可以通过改变制冷剂的Dy与Er比来调节。