US 11,746,767 B2
Linear compressor
Sangik Son, Seoul (KR); Wooju Jeon, Seoul (KR); Youngkyun Lim, Seoul (KR); and Donghan Kim, Seoul (KR)
Assigned to LG ELECTRONICS INC., Seoul (KR)
Filed by LG ELECTRONICS INC., Seoul (KR)
Filed on Jul. 21, 2021, as Appl. No. 17/381,654.
Claims priority of application No. 10-2020-0120536 (KR), filed on Sep. 18, 2020.
Prior Publication US 2022/0090590 A1, Mar. 24, 2022
Int. Cl. F04B 35/04 (2006.01); F04B 39/02 (2006.01); F04B 39/12 (2006.01); F04B 39/00 (2006.01); F04B 53/18 (2006.01); F04B 53/16 (2006.01)
CPC F04B 35/045 (2013.01) [F04B 39/0005 (2013.01); F04B 39/0292 (2013.01); F04B 39/122 (2013.01); F04B 53/18 (2013.01); F04B 53/162 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A linear compressor comprising:
a cylinder that defines a compression space configured to receive refrigerant; and
a piston disposed in the cylinder and configured to reciprocate relative to the cylinder along an axial direction of the cylinder,
wherein the cylinder comprises:
a gas inlet defined at an outer circumferential surface of the cylinder,
a supply port that passes through the cylinder in a radial direction of the cylinder and is in fluid communication with the gas inlet, and
a recess that is in fluid communication with the supply port and defined at an inner circumferential surface of the cylinder, and
wherein an axial cross section of the recess defines a first acute angle with respect to the axial direction and a second acute angle with respect to the radial direction, the second acute angle being defined between (i) a surface of the recess connected to the supply port and (ii) a straight reference line extending from the supply port in the radial direction.