US 12,429,038 B2
Linear compressor
Jaebeum Kim, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Appl. No. 18/012,030
Filed by LG Electronics Inc., Seoul (KR)
PCT Filed Jun. 14, 2021, PCT No. PCT/KR2021/007412
§ 371(c)(1), (2) Date Dec. 21, 2022,
PCT Pub. No. WO2022/149669, PCT Pub. Date Jul. 14, 2022.
Claims priority of application No. 10-2021-0002835 (KR), filed on Jan. 8, 2021.
Prior Publication US 2023/0258166 A1, Aug. 17, 2023
Int. Cl. F04B 35/04 (2006.01); H02K 33/16 (2006.01); H02K 33/18 (2006.01)
CPC F04B 35/04 (2013.01) [F04B 35/045 (2013.01); H02K 33/16 (2013.01); H02K 33/18 (2013.01); H02K 2201/12 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A linear compressor comprising:
a frame;
an outer stator comprising a stator core disposed at the frame, a teeth portion that extends inward from the stator core, and a teeth shoe that extends in a circumferential direction from an inner end of the teeth portion;
a coil disposed at the teeth portion;
a cylinder disposed at the frame;
a piston disposed in the cylinder;
an inner stator coupled to an outer circumferential surface of the piston and configured to reciprocate axially based on an electromagnetic interaction with the coil;
a magnet that is disposed at the teeth shoe and faces the inner stator; and
a virtual pole that is disposed at the teeth shoe and faces the inner stator, the virtual pole being disposed at an axial front or an axial rear of the magnet,
wherein the outer stator comprises a plurality of core plates stacked axially,
wherein a distance between the magnet and the inner stator is different from a distance between the virtual pole and the inner stator, and
wherein a radial thickness of the virtual pole is less than a radial thickness of the magnet.