公开(公告)号：US20020051710A1

公开(公告)日：2002-05-02

申请号：US09962076

申请日：2001-09-26

Applicant: LG Electronics Inc.

Inventor： Jae Yoo Yoo ,  Hyung Jin Kim ,  Kye Si Kwon

IPC: F04B049/00

CPC classification number: F04B49/065 ,  F04B2201/0206 ,  F04B2203/0401 ,  F04B2203/0402

Abstract: In an apparatus and a method for controlling operation of a reciprocating compressor which is capable of operating a compressor stably by detecting a phase difference and using an inflection point of the phase difference, an apparatus and a method for controlling operation of a reciprocating compressor including an electric circuit unit operating a reciprocating compressor by varying a stroke with motion of a piston, a phase difference detecting unit detecting a phase difference of a current and a voltage from the electric circuit unit, a phase inflection point detecting unit detecting a phase inflection point by being inputted the phase difference, and a stroke controlling unit being inputted the detected phase inflection point from the phase inflection point detecting unit and applying a voltage to the electric circuit unit in order to make the stroke correspond to the phase inflection point can control a TDC of a piston regardless of load variation, improve an operation efficiency of a reciprocating compressor, and because a stroke calculating circuit is not required, there is no stroke calculating error according to the motor constant variation, in addition, it is possible to operate a reciprocating compressor by corresponding instantly to a load and operate the reciprocating compressor in a safe region in sensing of an overload by grasping the present load condition using a reference value of a phase difference.

Abstract translation: 在能够通过检测相位差并使用相位差的拐点来稳定地运行压缩机的往复式压缩机的运转控制装置和方法中，包括： 电路单元，其通过活塞的运动改变行程来操作往复式压缩机;相位差检测单元，其检测来自所述电路单元的电流的相位差和电压;相位拐点检测单元，其检测相位拐点; 输入相位差，并且行程控制单元从相位拐点检测单元输入检测到的相位拐点并向电路单元施加电压以使笔画与相位拐点相对应可以控制TDC 无论负载变化如何，提高了运行效率o 往复式压缩机，并且由于不需要行程计算电路，所以根据电动机常数变化不存在行程计算误差，另外可以将往复式压缩机立即对应于负载进行操作，并将往复式压缩机 通过使用相位差的参考值来掌握当前负载条件来检测过载的安全区域。

公开(公告)号：US20020113565A1

公开(公告)日：2002-08-22

申请号：US09983942

申请日：2001-10-26

Applicant: LG ELECTRONICS INC.

Inventor： Hyung Jin Kim ,  Kye Si Kwon ,  Hyuk Lee

IPC: H01H001/00 ,  H02P001/00 ,  H02P001/04 ,  H02P003/00 ,  H02P005/00 ,  H02P007/00 ,  H02P007/20 ,  H02P007/22 ,  H02P007/54 ,  H02P007/56

CPC classification number: H02K3/28 ,  F04B35/045

Abstract: A coil winding number variable type motor for varying a cooling and heating capacity of a reciprocating motor includes: a plurality of coils separately wound and connected in series to each other so as to vary turn ratio among motor coils; a plurality of relays respectively connected between adjacent coils among the plurality of coils; and a relay controller for outputting and ON/OFF control signal for varying the winding number of the motor coil and controlling the relays according to a change in a load and a power supply voltage. The coil wound in the motor of the reciprocating compressor is divided into the main coil and the plurality of sub-coils and the winding number of the motor coil is varied by itself to control the stroke of the reciprocating compressor, thereby effectively coping with the change in the voltage or the load.

Abstract translation: 一种用于改变往复式电机的冷却和加热能力的线圈绕组数量可变型电动机包括：多个线圈，它们彼此串联并串联连接，以便改变电机线圈之间的匝数比; 分别连接在所述多个线圈中的相邻线圈之间的多个继电器; 以及用于输出和ON / OFF控制信号的继电器控制器，用于改变电动机线圈的绕组数，并根据负载和电源电压的变化来控制继电器。 卷绕在往复式压缩机的马达中的线圈被分成主线圈和多个子线圈，并且马达线圈的绕组数本身变化以控制往复式压缩机的冲程，从而有效地应对变化 在电压或负载。