公开(公告)号：US20210010468A1

公开(公告)日：2021-01-14

申请号：US16709213

申请日：2019-12-10

Applicant: LG Electronics Inc.

Inventor： Jangsik KIM ,  Daeho CHOI

IPC: F04B49/06 ,  H02P7/00 ,  F04B49/20

Abstract: An operation controlling apparatus of a reciprocating compressor includes: a detector configured to detect a torque output by a motor of the reciprocating compressor, a rotation speed of the motor, a counter electromotive voltage of the motor, and a current applied to the motor; a controller configured to determine a mode switching time point for switching an operation mode of the reciprocating compressor based on the torque, the rotation speed, the counter electromotive voltage, and the current of the motor, and output a control signal for changing a wire ratio of the motor corresponding to the operation mode; and a driver configured to change the wire ratio of the motor based on the control signal and operate the reciprocating compressor in the operation mode among at least two operation modes.

公开(公告)号：US20240417907A1

公开(公告)日：2024-12-19

申请号：US18701506

申请日：2022-10-13

Applicant: LG ELECTRONICS INC. ,  AD SEMICON CO., LTD.

Inventor： Daeho CHOI ,  Cheol LIM

IPC: D06F34/30 ,  D06F34/32 ,  H03K17/96

Abstract: A touch input device includes a printed circuit board, a second substrate receiving a touch input from a user, and a spring member mounted on the surface of the printed circuit board and arranged to be in contact with the second substrate. The spring member includes a middle portion formed by a spring having a first diameter; a first end portion which extends from one side of the middle portion and the diameter of which expands to be larger than the first diameter; and a second end portion which extends from the other side of the middle portion and the diameter of which expands to be larger than the first diameter.