Patent ID: 7566206

Claim:
A linear compressor comprising: a linear motor comprising a stator and a magnet, said linear motor configured to generate a linear driving force; a stationary cylinder having a first compression chamber formed therein, an outlet valve being provided at a front portion of the stationary cylinder; a moving piston movable forward and backward by said linear motor, by the magnet of the linear motor being connected to said moving piston to compress a fluid in the first compression chamber, the moving piston having a second compression chamber therein, a first valve provided at a front portion of the moving piston such that the first compression chamber is provided in the stationary cylinder in a space between the outlet valve and the first valve; and a stationary piston fixedly positioned in the compressor, the stationary piston being fitted in the moving piston so that the fluid in the second compression chamber is compressed as the moving piston is reciprocated, the stationary piston having an inlet flow channel provided therein so that the fluid is introduced through the inlet flow channel; and a second valve provided at the stationary piston such that the second compression chamber is provided between the first valve and the second valve; wherein the stationary piston is spaced from a rear end of the stationary cylinder in an axial direction of the stationary cylinder, and wherein the moving piston comprises: a piston part that is linearly movable, a portion of the piston part extending into the stationary cylinder; and a moving cylinder part connected to a rear of the piston part, the stationary piston being positioned within the moving cylinder.