公开(公告)号：US20240125326A1

公开(公告)日：2024-04-18

申请号：US18466403

申请日：2023-09-13

Applicant: LG Electronics Inc.

Inventor： Jisu HWANG ,  Byungjik KIM ,  Eunji HWANG ,  Sunggi KIM ,  Yoonchul RHIM

IPC: F04D25/06 ,  F04D29/056 ,  F16C19/18 ,  H02K5/173

CPC classification number: F04D25/06 ,  F04D29/056 ,  F16C19/18 ,  H02K5/1735 ,  F16C2360/46

Abstract: A fan motor includes a rotating shaft on which an impeller is mounted, a motor unit for driving the rotating shaft, a plurality of bearings supporting the rotating shaft, a spring serially disposed between the plurality of bearings to axially apply force to an outer ring of one of the plurality of bearings, and a cylinder brought into contact with the spring to transfer elastic pressing force of the spring to the outer ring of the bearing. Accordingly, by applying a preload to the outer ring of the bearing, a ball of the bearing can be restricted from moving axially and radially between the outer ring and an inner ring of the bearing. The spring has a structure that is surface-contactable and has a length shorter than a diameter, and does not require a separate cartridge such as a sleeve for fixing the spring.

公开(公告)号：US20180195502A1

公开(公告)日：2018-07-12

申请号：US15865966

申请日：2018-01-09

Applicant: LG ELECTRONICS INC. ,  INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY

Inventor： Kwangwoon AHN ,  Sungyong AHN ,  Yoonchul RHIM

IPC: F04B39/00 ,  F04B35/04 ,  F04B39/10

CPC classification number: F04B39/0016 ,  F04B35/04 ,  F04B35/045 ,  F04B39/0005 ,  F04B39/0011 ,  F04B39/0061 ,  F04B39/02 ,  F04B39/0238 ,  F04B39/1046

Abstract: A linear compressor includes a cylinder that defines a compression chamber configured to accommodate refrigerant and that includes a cylinder nozzle configured to receive refrigerant, and a piston provided in the cylinder and configured to be pressed by refrigerant in the cylinder. The piston includes a piston body configured to move forward and backward within the cylinder, a piston front part located on a front surface of the piston body, the piston front part comprising a suction port through which refrigerant is supplied into the compression chamber, and a refrigerant collection part that is recessed from an outer circumferential surface of the piston front part, that extends to a front surface of the piston front part, and that is configured to receive at least a portion of refrigerant compressed in the compression chamber.