Brushless induction synchronous motor with two stators
    1.
    发明授权
    Brushless induction synchronous motor with two stators 失效
    无刷感应同步电机带两个定子

    公开(公告)号:US5285124A

    公开(公告)日:1994-02-08

    申请号:US928057

    申请日:1992-08-11

    CPC分类号: H02K19/14 H02K16/00

    摘要: An induction synchronous motor includes a unitary rotor having first and second pole type rotor cores, first and second stators, a voltage phase shifting means, and DC magnetic excitation circuits. Both of the rotor cores are mounted on a common rotor axis with a predetermined space between them. The first and second rotor windings are wound on the first and second rotor cores, respectively. A plurality of diodes is each connected in parallel between series-connection nodes of the first and second rotor windings. A plurality of rotor conductors is provided on the peripheries of and extend through the first and second rotor cores. A pair of short-circuit rings short-circuits both ends of the plurality of rotor conductors. The first and second stators surround the first and second salient pole type rotor cores, respectively, and have the same number of poles as the first and second rotor cores. The voltage phase shifting means selectively produces a phase difference of 0.degree. for starting and accelerating operations and 180.degree. for synchronous operation. The DC magnetic excitation circuits face the first and second salient pole type rotor cores, and have a different number of poles from the first and second stators.

    摘要翻译: 感应同步电动机包括具有第一和第二极型转子铁心的单体转子,第一和第二定子,电压相移装置和直流磁激励电路。 这两个转子芯都安装在共同的转子轴上,它们之间具有预定的空间。 第一和第二转子绕组分别缠绕在第一和第二转子芯上。 多个二极管各自并联连接在第一和第二转子绕组的串联连接节点之间。 多个转子导体设置在第一和第二转子芯的周边并延伸穿过第一和第二转子芯。 一对短路环短路多个转子导体的两端。 第一和第二定子分别围绕第一和第二凸极型转子铁心,并且具有与第一和第二转子铁芯相同的极数。 电压相移装置选择性地产生用于启动和加速操作的0度的相位差和用于同步操作的180度的相位差。 直流磁激励电路面对第一和第二凸极型转子铁心,并且具有与第一和第二定子不同数量的极点。

    Synchronous motor with two permanent magnet rotor portions
    2.
    发明授权
    Synchronous motor with two permanent magnet rotor portions 失效
    具有两个永磁转子部分的同步电机

    公开(公告)号:US5281879A

    公开(公告)日:1994-01-25

    申请号:US873091

    申请日:1992-04-24

    CPC分类号: H02K21/46 H02K16/00 H02P1/50

    摘要: A synchronous motor includes a unitary rotor, a first stator, a second stator and phase-changing switches. The unitary rotor has a first rotor portion formed by a first permanent magnet and a second rotor portion formed by a second permanent magnet and an induction type rotor and these first and second rotor portions are mounted on a common rotary axle with a predetermined space provided therebetween. The first stator faces the first rotor portion for producing a first rotating magnetic field. The second stator faces the second rotor portion for producing a second rotating magnetic field and is disposed such that, at the starting operation, the attracting action or the repelling action produced between the first rotating magnetic field and the first permanent magnet is canceled by the repelling action or the attracting action produced between the second rotating magnetic field and the permanent magnetic field. The phase-changing switches are associated with either one of the first stator or the second stator and set a phase difference of 0 degree or 180 degrees between the first rotating magnetic field and the second rotating magnetic field. Due to the cancellation action, any starting interference which may otherwise be caused by the permanent magnets is made negligible.

    摘要翻译: 同步电动机包括单一转子,第一定子,第二定子和相变开关。 整体转子具有由第一永久磁铁形成的第一转子部分和由第二永久磁铁和感应型转子形成的第二转子部分,并且这些第一和第二转子部分安装在共同的旋转轴上,其间设置有预定的空间 。 第一定子面向第一转子部分以产生第一旋转磁场。 第二定子面向第二转子部分以产生第二旋转磁场,并且被布置成使得在起动操作时,第一旋转磁场和第一永久磁铁之间产生的吸引作用或排斥作用被排斥 动作或在第二旋转磁场和永久磁场之间产生的吸引作用。 相变开关与第一定子或第二定子中的任一个相关联,并且在第一旋转磁场和第二旋转磁场之间设定0度或180度的相位差。 由于取消动作,否则可能由永磁体引起的任何起动干扰都可以忽略不计。

    Dual-stator induction synchronous motor
    3.
    发明授权
    Dual-stator induction synchronous motor 失效
    双定子感应同步电动机

    公开(公告)号:US5254894A

    公开(公告)日:1993-10-19

    申请号:US706009

    申请日:1991-05-28

    CPC分类号: H02P1/50 H02K16/00 H02K19/14

    摘要: An induction synchronous motor with two rotor cores and two stator cores includes a rotor having two mutually connected first rotor windings (31,31) of a predetermined number of poles and two mutually connected second rotor windings (33,34) connected of a different number of poles with respect to the number of poles of the first rotor windings; and two stators having two stator windings (21,22) of the number of poles identical with the number of poles of the first rotor windings (31,32) and two excitation windings (41,42) of the number of poles identical with the number of poles of the second rotor windings (33,34). The motor further includes a rectifier circuit (35) for rectifying outputs from the second rotor windings (33,34) and supplying the rectified voltages to the first rotor windings (31,32) at a synchronous operation. A phase shifter (SW1) associated with the first stator windings (21,22) produces a phase difference of 180.degree. between a rotating magnetic field around one of the rotor cores and that around the other one of the rotor cores. The motor starts based on a theory of an ordinary induction motor under a phase difference of 0.degree. and can operate as a synchronous motor after the rotating speed has reached its synchronous speed under the phase difference of 180.degree. produced by the phase shifter.

    Multiple-stator induction synchronous motor
    4.
    发明授权
    Multiple-stator induction synchronous motor 失效
    多定子感应同步电机

    公开(公告)号:US5796233A

    公开(公告)日:1998-08-18

    申请号:US849078

    申请日:1992-06-24

    摘要: An induction synchronous motor comprises: a unitary rotor having a first and a second rotor core; a first and a second stator mounted surroundingly facing the first and the second rotor core; a voltage phase shifting means for producing a first and a second phase differences; a static magnetic field around each of the first and second rotor cores; and a rotor magnetizing means having diodes for rectifying alternating voltages and for having the resultant direct current produce magnetic poles in the first and second rotor cores. The motor is caused to initiate its operation as an induction motor based on the first phase difference produced by the voltage phase shifting means, to have the first phase difference shifted to the second phase difference produced by the phase shifting means operated, and to have the first and second rotor cores produce the magnetic poles attracted by the rotating magnetic field produced by the first and second stators, resulting in the synchronous operation of the motor.

    摘要翻译: PCT No.PCT / JP90 / 01366 Sec。 371日期:1992年6月24日 102(e)日期1992年6月24日PCT 1990年10月24日PCT PCT。 出版物WO91 / 07005 日期1991年5月16日感应同步电动机包括:具有第一和第二转子芯的整体转子; 围绕所述第一和第二转子芯安装的第一和第二定子; 用于产生第一和第二相位差的电压相移装置; 围绕第一和第二转子芯的每一个周围的静磁场; 以及转子磁化装置,其具有用于整流交流电压的二极管,并且使得所得到的直流在第一和第二转子芯中产生磁极。 基于由电压相移装置产生的第一相位差,使电动机作为感应电动机起动,使第一相位差移动到由相移装置产生的第二相位差,并且使 第一和第二转子芯产生由第一和第二定子产生的旋转磁场吸引的磁极,导致电动机的同步运行。

    Induction motor switchable between series delta and parallel wye
    5.
    发明授权
    Induction motor switchable between series delta and parallel wye 失效
    感应电机在三角系列和平行眼之间可切换

    公开(公告)号:US5068559A

    公开(公告)日:1991-11-26

    申请号:US588921

    申请日:1990-09-27

    CPC分类号: H02K17/36 H02K16/00 H02P5/74

    摘要: An induction motor, including a single rotor formed in one-piece and first and second stators disposed side by side, has a phase changing device for varying the phase difference between the rotational magnetic field generated by the first stator and that generated by the second stator. The phase changing device comprises at least first and second short-circuiting switches for short-circuiting or disconnecting the series-junction nodes of the stator windings. The first switching produces a configuration intermediate to series delta and parallel Y (Wye), and the second completes the transformation from delta to Y. The motor presents three different torque curves suitable for starting operation, intermediate speed operation and normal or steady-state operation by the switching operation of the first- and second-switches.

    Y-delta conversion switches on dual stator induction motor
    6.
    发明授权
    Y-delta conversion switches on dual stator induction motor 失效
    双定子感应电动机的Y-Δ转换开关

    公开(公告)号:US5051639A

    公开(公告)日:1991-09-24

    申请号:US588587

    申请日:1990-09-26

    IPC分类号: H02K16/00 H02K17/36 H02P5/74

    CPC分类号: H02P5/74 H02K16/00 H02K17/36

    摘要: An induction motor including a single rotor formed in one-piece and first and second stators disposed side by side has a phase changing device for varying the phase difference between the rotational magnetic field generated by the first stator and that generated by the second stator. The phase changing device comprises a first-connection changing switch for making the interconnection of respective stator windings of the stators the first series delta-connection in which the phase difference is 0.degree. when it is in its closed-state and a second-connection changing switch for making the respective stator windings the second series data-connection in which the phase difference is 120.degree. when it is in its closed-state. When both the first- and second-connection changing switches are closed, the interconnection of the stator windings becomes a parallel Y (or star)-connection in which the phase difference produced is 60.degree.. During the motor operation, at least one of the first-switch and the second-switch is always kept in its closed-state. The motor exhibits three different torque curves suitable for starting operation, an intermediate speed operation and normal or steady-state operation by the switching operation of the first- and second-switches.

    Two-stator induction synchronous motor
    7.
    发明授权
    Two-stator induction synchronous motor 失效
    双定子感应同步电动机

    公开(公告)号:US5144180A

    公开(公告)日:1992-09-01

    申请号:US671116

    申请日:1991-03-18

    IPC分类号: H02K16/04 H02K21/46

    CPC分类号: H02K16/04 H02K21/46

    摘要: A two-stator induction synchronous motor includes a unitary rotor having a first rotor assembly and a second rotor assembly each of which is formed by a permanent magnet and a rotor core. The first rotor assembly and the second rotor assembly respectively have a first pair of and a second pair of magnetic poles of the permanent magnets disposed in such a relative relation that the former and the latter are displaced by 180.degree. or 0.degree. with each other. The motor also includes a phase shifting means which produces a phase difference of 0.degree. or 180.degree. between a voltage induced in rotor conductive members by a rotating magnetic field generated around the first rotor assembly and a voltage induced in rotor conductive members by a rotating magnetic field generated around the second rotor assembly. The two permanent magnets are disposed in such a relation that the attracting or repelling action of one permanent magnet and the repelling or attracting action of the other permanent magnet cancel each other, so that the starting operation is not interfered with. The starting operation is the same as in an induction motor and the running operation is as in a synchronous motor.

    Spacer for abrasive roll of abrasive type grain milling machine
    8.
    发明授权
    Spacer for abrasive roll of abrasive type grain milling machine 失效
    磨料磨粒机研磨辊间隔器

    公开(公告)号:US5395059A

    公开(公告)日:1995-03-07

    申请号:US202788

    申请日:1994-02-28

    IPC分类号: B02B3/06 B02B3/04 B02C7/13

    CPC分类号: B02B3/04

    摘要: An abrasive type vertical grain milling machine in which each of spacers comprises a boss portion fitted on a main shaft and a plurality of arm portions extending from the boss portion in the radially outwardly and serving to induce bran removing air into a grain milling chamber through spaces between the circumferentially adjacent arm portions, is capable of discharging bran produced in the grain milling chamber with high bran discharging power and has little possibility that the bran removing power is reduced during operation.

    摘要翻译: 一种研磨型立式颗粒铣床,其中每个间隔件包括装配在主轴上的凸台部分和从径向向外从凸台部分延伸的多个臂部分,用于引导将空气通过空间除去空气进入谷物研磨室 在周向相邻的臂部之间能够以高的麸皮排出能力排出在谷物研磨室中产生的麸皮,并且在操作期间麸皮去除功率的可能性很小。

    Process of and system for flouring wheat
    9.
    发明授权
    Process of and system for flouring wheat 失效
    播种小麦的过程和系统

    公开(公告)号:US5145117A

    公开(公告)日:1992-09-08

    申请号:US690674

    申请日:1991-04-24

    IPC分类号: B02B5/02 B02C9/04

    CPC分类号: B02C9/04 B02B5/02

    摘要: A wheat flouring system comprises a polishing machine for polishing wheat grains, a humidifying machine for humidifying the grains, a conditioning machine for subjecting the grains to conditioning and a milling machine for milling the grains to produce a flour. The polishing machine, the humidifying machine, the conditioning machine and the milling machine are successively arranged from an upstream side to a downstream side as viewed in a direction of flow of the wheat grains. There is provided an agitating machine for agitating the grains humidified by the humidifying machine, thereby preventing the humidified grains from sticking together into lumps of the grains.

    摘要翻译: 小麦面粉系统包括用于抛光小麦籽粒的抛光机,用于加湿谷粒的加湿机,用于对谷物进行调理的调理机和用于研磨谷物的研磨机以生产面粉。 研磨机,加湿机,调理机,铣刨机,从小麦籽粒流动方向观察,从上游侧向下游侧排列。 提供了一种用于搅拌加湿机加湿的颗粒的搅拌机,从而防止加湿颗粒粘在一起成为颗粒块。

    Process of grinding grains
    10.
    发明授权
    Process of grinding grains 失效
    研磨颗粒的工艺

    公开(公告)号:US5115984A

    公开(公告)日:1992-05-26

    申请号:US635213

    申请日:1990-12-28

    申请人: Toshihiko Satake

    发明人: Toshihiko Satake

    IPC分类号: B02B3/00 B02C9/04

    CPC分类号: B02B3/00 B02C9/04

    摘要: A grain grinding system includes a polishing machine for polishing grains, and roll mills and sifters for repeatedly mill and sift the polished grains to provide a flour having a desired mesh size. A moisture adding device is provided for adding moisture to the grains milled in at least one of the roll mills, thereby maintaining the grains in a suitably moistened condition during the milling operation.