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    • 15. 发明公开
    • Electric motors and power tools
    • 电动马达和电动工具
    • EP0192469A3
    • 1987-11-11
    • EP86301154
    • 1986-02-19
    • DOBSON PARK INDUSTRIES PLC
    • Ward, RichardCorbett, William RobertFord, Leslie Walter
    • H02K21/08H02K29/06H02K07/116H02K09/22H02P06/00
    • H02K9/22B25F5/008H02K1/2733H02K1/2793H02K7/116H02K7/1163H02K29/06H02P6/06
    • A hand power tool comprises an electric motor 40 having a rare earth permanent magnet rotor 3 and a polyphase wound stator 4 within a totally enclosed body 5, which in turn is mounted within a housing 2 of the hand tool. The rotor 3 is covered with a thermally and electrically insulative sleeve 12. Primary and secondary output shafts 42 and 49 rotate in the same sense, but one at twice the speed of the other. Thus, no bearings in the motor have to deal with an angular speed greater than half the actual rotor speed. Associated with the motor 1 is electronic control circuitry arranged to generate a polyphase alternating supply and to connect that supply to the stator 4, thereby to produce a rotating magnetic field. Means are disclosed of cooling the rotor, and various electronic circuit configurations are disclosed, for the motor control.
    • 手动电动工具包括在全封闭体5内具有稀土永磁转子3和多相卷绕定子4的电动机40,该全电动机40又安装在手动工具的壳体2内。 转子3被热和电绝缘套筒12覆盖。主输出轴42和第二输出轴49以相同的意义旋转,但以另一个的速度的两倍旋转。 因此,电机中没有轴承必须处理大于实际转子速度的一半的角速度。 与电动机1相关联的是电子控制电路,其被布置成产生多相交流电源并将该电源连接到定子4,从而产生旋转磁场。 公开了冷却转子的装置,并且公开了用于电动机控制的各种电子电路配置。
    • 18. 发明公开
    • DEVICE FOR STIRRING
    • RÜHRVORRICHTUNG
    • EP2490796A1
    • 2012-08-29
    • EP09850637.1
    • 2009-10-21
    • Metenova Holding AB
    • JOHANSSON, Sten
    • B01F13/08
    • B01F13/0872B01F13/0827B01F15/0048B01F2015/0011F16C32/0417F16C32/0427F16C39/063F16C39/066F16C2320/16H02K7/09H02K7/1163H02K49/106H02K2205/03
    • A device for stirring a liquid or a granular material comprising a stirring agitator, a rotating drive shaft for rotating the stirring agitator, a rotating drive shaft for rotating the stirring agitator, a stationary axle extending in an essentially vertical direction about which the stirring agitator is adapted to rotate, and a transfer arrangement for contactless transfer of rotation of the drive shaft to the stirring agitator. The device has a center axis around which the stirring agitator and the drive shaft are adapted to rotate, and means for generating a magnetic force exerting an upwardly directed force component on the stirring agitator. The means for generating a magnetic force comprises a first element arranged in a stirring agitator and a second element associated with the stationary axle. At least one of the first element and the second element comprises a permanent magnet.
    • 一种用于搅拌液体或颗粒材料的装置,包括搅拌搅拌器,用于旋转搅拌搅拌器的旋转驱动轴,用于旋转搅拌搅拌器的旋转驱动轴,沿基本垂直方向延伸的固定轴,搅拌搅拌器周围 以及用于将驱动轴的旋转无接触地传递到搅拌搅拌器的传送装置。 该装置具有搅拌搅拌器和驱动轴适于旋转的中心轴线,以及用于产生在搅拌搅拌器上施加向上定向的力分量的磁力的装置。 用于产生磁力的装置包括布置在搅拌搅拌器中的第一元件和与固定轴相关联的第二元件。 第一元件和第二元件中的至少一个包括永磁体。 第一元件和第二元件中的至少一个被布置成使得中心轴线延伸穿过第一元件和/或第二元件。