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    • 2. 发明申请
    • Variable speed motor
    • 变速电机
    • US20060181238A1
    • 2006-08-17
    • US11287207
    • 2005-11-28
    • Byung ChoiDong LeeByoung MinDong Kim
    • Byung ChoiDong LeeByoung MinDong Kim
    • H02P1/42
    • H02P25/20H02P25/04H02P25/18
    • A variable speed motor is disclosed. The variable speed motor includes: a main winding including first and second main windings, and an auxiliary winding including first and second auxiliary windings, wherein the main winding and the auxiliary winding are wound on a stator to form a plurality of poles; and a plurality of relays for performing a switching operation between serial/parallel connections of the first and second main windings or the first and second auxiliary windings. The variable speed motor includes: a stator on which a 4-pole winding and a 12-pole winding are wound; a plurality of tap windings connected in series to a 4-pole main winding forming 4 poles, for extending a variable range of rotation speed of the motor during a 4-pole operation mode; and a phase control circuit for varying rotation speed of the motor by controlling a phase of an input power-supply signal during a 12-pole operation mode. Therefore, the variable speed motor greatly extends the range of a variable speed of the motor, and does not require an additional drive unit for varying the motor speed, such that production costs are greatly reduced, and electromagnetic vibration noise caused by a low-speed control mode of the motor is also greatly reduced. Rotation speed of the motor is controlled by a phase control operation and a winding switching operation, such that the variable speed motor effectively controls the motor speed, and greatly reduces power consumption.
    • 公开了一种变速电动机。 变速马达包括:包括第一和第二主绕组的主绕组和包括第一和第二辅助绕组的辅助绕组,其中主绕组和辅助绕组缠绕在定子上以形成多个极; 以及用于在第一和第二主绕组或第一和第二辅助绕组的串联/并联连接之间进行切换操作的多个继电器。 变速电动机包括:四极绕组和12极绕组缠绕的定子; 与4极主绕组串联连接的多个抽头绕组,形成4极,用于在4极运行模式期间延长电动机的可变转速范围; 以及用于通过在12极运行模式期间控制输入电源信号的相位来改变电动机的转速的相位控制电路。 因此,变速电动机极大地延长了电动机的变速范围,不需要额外的驱动单元来改变电动机速度,从而大大降低了生产成本,并且由低速度引起的电磁振动噪声 电机的控制方式也大大降低。 电动机的转速通过相位控制运行和绕组切换动作进行控制,使得变速电动机有效地控制电动机转速,大大降低功耗。
    • 3. 发明申请
    • Variable speed motor
    • 变速电机
    • US20050237022A1
    • 2005-10-27
    • US11113171
    • 2005-04-25
    • Dong KimByoung MinByung ChoiTae Lee
    • Dong KimByoung MinByung ChoiTae Lee
    • H02P25/04H02P27/06H02P5/06
    • H02P25/04
    • A variable speed motor includes first and second main windings wound on a stator, and a relay for performing a switching operation between serial/parallel connections of the first and second main windings to control motor speed. The variable speed motor further includes a tap winding connected in series to the main windings, or an additional capacitor, such that it can greatly extend the range of a variable speed without using a drive unit capable of changing the motor speed at an external location, resulting in reduced production costs of the motor, reduced electromagnetic vibration noise, and reduced power consumption.
    • 变速电动机包括缠绕在定子上的第一和第二主绕组以及用于在第一和第二主绕组的串联/并联连接之间执行开关操作以控制电动机速度的继电器。 变速电动机还包括与主绕组串联连接的抽头绕组或附加电容器,使得其可以在不使用能够改变外部位置处的电动机速度的驱动单元的情况下大大地扩展可变速度的范围, 导致电机的生产成本降低,电磁振动噪声降低,功耗降低。
    • 6. 发明申请
    • Process for the preparation of dimethylether from hydrocarbons
    • 从碳氢化合物制备二甲醚的方法
    • US20060287405A1
    • 2006-12-21
    • US11450580
    • 2006-06-10
    • Young BaekWon ChoByoung ChoJung SuhDong KimHyung KimSeung LeeWoo Ju
    • Young BaekWon ChoByoung ChoJung SuhDong KimHyung KimSeung LeeWoo Ju
    • C07C27/06
    • C07C41/09C07C41/01C07C43/043
    • Disclosed herein is a process for the preparation of dimethylether from hydrocarbons, including tri-reforming a feedstock mixture comprised of hydrocarbons, carbon dioxide and water vapor in the presence of a tri-reforming catalyst, to prepare a syngas, which then undergoes gas-phase direct synthesis into dimethylether in one step in the presence of a hybrid catalyst. According to the process of this invention, three main processes among typical syngas preparation processes are simultaneously performed, and then, the syngas thus obtained is prepared into dimethylether through a direct reaction in one step, thereby decreasing the apparatus cost and operation cost. In addition, all of the carbon dioxide separated and recovered from the unreacted material and by-products may be reused as reaction material, thus decreasing the generation of carbon dioxide and reducing the material cost.
    • 本文公开了一种从烃制备二甲醚的方法,包括在三重转化催化剂的存在下,由烃,二氧化碳和水蒸气组成的原料混合物进行三重重整,以制备合成气,然后合成气经历气相 在混合催化剂存在下,在一个步骤中直接合成二甲醚。 根据本发明的方法,同时进行典型的合成气制备过程中的三个主要过程,然后通过一步直接反应将由此获得的合成气制备成二甲醚,从而降低设备成本和操作成本。 此外,从未反应的物质和副产物中分离回收的二氧化碳全部可以作为反应物质再利用,从而减少二氧化碳的产生并降低材料成本。