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    • 94. 发明授权
    • Magnetic bearing device and turbo molecular pump with the magnetic bearing device mounted thereto
    • 磁轴承装置和涡轮分子泵,其上安装有磁性轴承装置
    • US07292425B2
    • 2007-11-06
    • US11088063
    • 2005-03-23
    • Toshiaki KawashimaHirotaka NamikiHideo Fukami
    • Toshiaki KawashimaHirotaka NamikiHideo Fukami
    • H02K7/09
    • F04D19/048F16C32/0446F16C32/0476F16C2360/45
    • To provide a magnetic bearing device capable of reducing vibration by preventing a deterioration in the control of a rotor shaft due to a variation in the axial position of the rotor shaft, while performing positional control over the rotor shaft in a specific attitude with optimal magnetic force, and to a turbo molecular pump with the magnetic bearing device mounted thereto. A sensitivity storage section 281 stores therein a sensor sensitivity used in a sensor sensitivity adjustment. The sensitivity storage section 281 outputs the stored sensor sensitivity to a sensitivity switching section. The sensitivity switching section switches the sensor sensitivity according to the situation, and outputs the result to a sensor signal amplifier section. The sensor signal amplifier section 252 performs, to a sensor signal, the sensor sensitivity adjustment according to the sensor sensitivity stored in the sensitivity storage section 281, and outputs, to an A/D converter 154, a sensor output signal 153 having a sensor output voltage V after the sensor sensitivity adjustment.
    • 为了提供一种能够通过防止由于转子轴的轴向位置的变化导致的转子轴的控制的劣化而能够减小振动的磁性轴承装置,同时以最佳磁力以特定的姿态对转子轴进行位置控制 以及安装有磁性轴承装置的涡轮分子泵。 灵敏度存储部分281存储传感器灵敏度调节中使用的传感器灵敏度。 灵敏度存储部分281将存储的传感器灵敏度输出到灵敏度切换部分。 灵敏度切换部根据情况切换传感器灵敏度,并将结果输出到传感器信号放大部。 传感器信号放大器部分252根据存储在灵敏度存储部分281中的传感器灵敏度对传感器信号执行传感器灵敏度调节,并将具有传感器输出的传感器输出信号153输出到A / D转换器154 传感器灵敏度调整后的电压V。
    • 95. 发明申请
    • Turbomolecular vacuum pump
    • 涡轮分子真空泵
    • US20070132327A1
    • 2007-06-14
    • US10575305
    • 2004-10-14
    • Maurice Brunet
    • Maurice Brunet
    • F01D1/36H02K7/09F04B17/00
    • F16C32/0489F04D19/048F04D25/068F04D25/0693F16C32/047F16C35/00F16C2360/45
    • The turbomolecular vacuum pump with active magnetic bearings comprises an enclosure (110) defining a primary vacuum chamber (116), a rotor (120), an electric motor (107), an axial magnetic bearing (103), radial magnetic bearings (101, 102), an axial detector (106), and radial detectors (104, 105). Remote external electric circuits associated with the electric motor (107) and with the axial and radial magnetic bearings (103 and 101, 102) essentially comprise power supply electric circuits (191). Circuits (194) for controlling the axial and radial magnetic bearings (103 and 101, 102) from signals issued by the axial and radial detectors (106 and 104, 105) are embedded in a resin and placed inside the enclosure (110) in the primary vacuum chamber (116). A hermetic leaktight electrical connector (180) and an electric cable (183, 184) providing a connection with the remote external electric circuits (191, 192) each have a number of connection wires that is less than ten.
    • 具有主动磁轴承的涡轮分子真空泵包括限定初级真空室(116)的外壳(110),转子(120),电动机(107),轴向磁性轴承(103),径向磁轴承(101, 102),轴向检测器(106)和径向检测器(104,105)。 与电动机(107)和轴向和径向磁性轴承(103和101,102)相关联的远程外部电路基本上包括电源电路(191)。 用于根据由轴向和径向检测器(106和104,105)发出的信号控制轴向和径向磁性轴承(103和101,102)的电路(194)嵌入在树脂中并放置在外壳(110)内 初级真空室(116)。 提供与远程外部电路(191,192)的连接的气密密封电连接器(180)和电缆(183,184)各自具有小于10的多个连接线。
    • 96. 发明授权
    • Magnetic bearing apparatus and vacuum pump having magnetic bearing apparatus
    • 磁轴承装置和具有磁性轴承装置的真空泵
    • US06617733B1
    • 2003-09-09
    • US09700640
    • 2000-12-29
    • Akira YamauchiManabu Nonaka
    • Akira YamauchiManabu Nonaka
    • H02K709
    • F04D29/058F04D19/048F16C27/04F16C32/0442F16C39/02F16C2360/45
    • In a magnetic bearing apparatus provided at least with a touchdown bearing and a corrugated plate-like damper member inserted into an annular gap between the touchdown bearing and its retainer member, to keep on holding the corrugated plate-like damper member in a predetermined position without fail. A cylindrical retainer member 9 is a thrust bearing retainer member and also a touchdown bearing retainer member. A touchdown bearing 4, i.e., a pair of roller bearings 4a and 4b disposed in upper and lower stages are received in an inner circumferential portion of the cylindrical retainer member 9. An annular gap G is formed between the inner circumferential surface of the cylindrical retainer member 9 and outer races of the pair of roller bearings 4a and 4b. A pair of corrugated strip steel plates 8a and 8b that are the corrugated plate-like damper members are inserted into this annular gap G. Also, a strip-like metal thin plate 10a is inserted while being clamped between the upper corrugated strip steel plate 8a and the lower corrugated strip steel plate 8b. Thus, the strip-like metal thin plate 10a functions as a positional offset preventing means of the pair of corrugated strip steel plates 8a and 8b.
    • 在至少设置有触地轴承和插入到触下轴承与其保持构件之间的环形间隙中的波纹状板状阻尼构件的磁性轴承装置中,为了保持将波纹板状阻尼构件保持在预定位置而没有 圆柱形保持构件9是推力轴承保持构件,也是触下轴承保持构件。 设置在上下台面的一对滚动轴承4a和4b被容纳在圆柱形保持构件9的内圆周部分中。环形间隙G形成在圆柱形保持器的内圆周表面之间 一对滚子轴承4a和4b的构件9和外圈。 作为波纹板状阻尼构件的一对波纹状钢板8a,8b被插入到该环状间隙G中。另外,将带状金属薄板10a插入在上部波纹状钢板8a 和下波纹条带钢板8b。 因此,带状金属薄板10a用作一对波纹状钢板8a,8b的位置偏移防止机构。