Method and device for determining an imbalance and application of the
device
    1.
    发明授权
    Method and device for determining an imbalance and application of the device 失效
    用于确定装置的不平衡和应用的方法和装置

    公开(公告)号:US5659136A

    公开(公告)日:1997-08-19

    申请号:US688603

    申请日:1996-07-30

    CPC分类号: G01H1/003 B04B9/146 G01M1/22

    摘要: In order to determine an imbalance of a rotor caused to turn by means of a driving arrangement, imbalance-produced deflections or accelerations of the driving arrangement, spring-loaded with respect to a stationary housing, are determined and relayed as an electrical signal to an evaluation device. The sensor may be, for example, a piezoelectric crystal for detection of accelerations of the drive unit caused by imbalance or a path sensor for detection of deflections of the drive unit relative to the housing as a result of imbalance. The signal is evaluated as a function of the rotary speed of the rotor by means of an adaptive band filter. The method is especially suitable for determination of imbalance during operation of laboratory centrifuges, where an imbalance can occur, for example, from breakage of test tubes.

    摘要翻译: 为了确定通过驱动装置转动的转子的不平衡,确定了相对于固定壳体弹簧加载的驱动装置的不平衡产生的偏转或加速度,并将其作为电信号中继到 评估装置。 传感器可以是例如用于检测由不平衡引起的驱动单元的加速度的压电晶体或用于由于不平衡而检测驱动单元相对于壳体的偏转的路径传感器。 该信号通过自适应频带滤波器被评估为转子旋转速度的函数。 该方法特别适用于确定实验室离心机操作过程中的不平衡状态,其中可能发生不平衡,例如,试管断裂。

    Centrifuge with a magnetically stabilized rotor for centrifugal goods
    2.
    发明授权
    Centrifuge with a magnetically stabilized rotor for centrifugal goods 失效
    离心机离心机用磁力稳定的转子离心机

    公开(公告)号:US06806604B2

    公开(公告)日:2004-10-19

    申请号:US09904188

    申请日:2001-07-12

    IPC分类号: H02K709

    摘要: A centrifuge with a rotor set-up having at least one magnetic bearing is invented to operate a novel centrifuge. The rotor arrangement is connected with at least one permanent magnet configuration which is radially separated by small gap from a passive superconducting magnet stator. The permanent magnets which are adjusted in such a way that the escaping magnetic flux penetrates the adjacent surface of the passive superconducting magnet stator at a substantially perpendicular orientation. A driving motor unit, preferably in the form of a contactless induction engine, ensures a free and frictionless rotation. The passive superconducting magnet stator is comprised a melt textured superconducting YBCO material of high critical current density which can be cooled below its critical temperature of T=92 K using an integrated cryogenic unit to obtain the superconducting state. The stator has a preferred shape of a cylinder or hollow cylinder.

    摘要翻译: 发明了具有至少一个磁性轴承的转子装置的离心机来操作新颖的离心机。 转子布置与至少一个永久磁铁结构连接,该永久磁体构造通过与被动超导磁体定子的小间隙径向隔开。 以这样的方式调节的永磁体,使得逸出的磁通量以基本垂直的方向穿过被动超导磁体定子的相邻表面。 优选地以非接触式感应发动机的形式的驱动电机单元确保了自由和无摩擦的旋转。 被动超导磁体定子包括具有高临界电流密度的熔体纹理超导YBCO材料,其可以使用集成的低温单元在T = 92K的临界温度下被冷却以获得超导状态。 定子具有圆柱体或中空圆柱体的优选形状。

    Operating light
    3.
    发明授权
    Operating light 失效
    操作灯

    公开(公告)号:US5128848A

    公开(公告)日:1992-07-07

    申请号:US501615

    申请日:1990-03-29

    IPC分类号: A61B19/00 F21S8/00 F21V5/04

    摘要: Given is an operating light, with one or several spotlights, each with a light source, that is shielded by a counter reflector in the direction of radiation. The stream of light is focused by the counter reflector and a reflector onto an optical system closing off the housing in the direction of radiation. To guarantee a homogeneous illumination of deeper surgical wounds also, the optical system is structured as a Fresnel lens made up of annular prisms that contain a dioptric central region and a catadioptric edge (rim) region. The slope of the flanks and the height of the annular prisms are dimensioned such that the light beams emanating from the Fresnel lens cut the optical axis at a distance that is all the greater the shorter the distance with which the light beams emanate from the Fresnel lens is away from the optical axis.

    摘要翻译: 给定的是一个操作灯,具有一个或几个聚光灯,每个具有光源,其被辐射方向上的反向反射器屏蔽。 光流由反射器和反射器聚焦到光学系统上,沿着辐射方向封闭外壳。 为了保证较深的外科伤口的均匀照明,光学系统被构造为由包含屈光度中心区域和反射折射边缘(边缘)区域的环形棱镜构成的菲涅耳透镜。 侧面的斜面和环形棱镜的高度的尺寸使得从菲涅耳透镜发出的光束将光轴切割成距离菲涅耳透镜发射的距离越短的距离越大 远离光轴。