Patent ID: 11905940
Assignee: LG ELECTRONICS INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A linear compressor comprising:
a shell including an intake pipe that is configured to suction a refrigerant;
a cylinder provided inside the shell;
a piston that is configured to reciprocate in an axial direction inside the cylinder and that includes a piston body and a piston flange;
an intake muffler including a first muffler that includes (i) a first muffler body disposed inside the piston body and defining a main flow passage and (ii) a first muffler flange extending in a radial direction from the first muffler body; and
at least one auxiliary flow passage that is disposed at an area between an outer peripheral surface of the first muffler body and an inner peripheral surface of the piston body and that is configured to guide refrigerant remaining in the area to an outside of the piston,
wherein the intake muffler further includes a second muffler disposed at a rear side of the first muffler,
wherein the at least one auxiliary flow passage is in fluid communication with the area and an expansion chamber defined between the first muffler and the second muffler, and
wherein a cross-sectional area of the at least one auxiliary flow passage is (i) less than a cross-sectional area of an inlet hole provided at a rear end of the main flow passage and (ii) greater than or equal to 10% of the cross-sectional area of the inlet hole.