Discharge valve cover for a linear compressor having a valve spring stopper and discharge pulsation reducing chambers

A linear compressor, comprising:

• a shell;
• a cylinder provided in the shell to define a compression space for a refrigerant;
• a frame to fix the cylinder to the shell;
• a piston reciprocated within the cylinder in an axial direction;
• a discharge valve disposed at one end of the cylinder to selectively discharge the refrigerant compressed in the compression space;
• a discharge cover including a cover body having a discharge hole through which the refrigerant discharged through the discharge valve flows, a frame coupling portion coupled to the frame and at least one chamber to reduce pulsation of the refrigerant discharged through the discharge valve;
• a valve spring installed on the discharge cover to provide an elastic force to the discharge valve;
• and
• a stopper coupled to the valve spring to restrict deformation of the valve spring, wherein the cover body comprises:
• a first step recessed from the frame coupling portion and having the discharge hole;
• and
• a second step further recessed from the first step toward the at least one chamber, the second step having at least one first guide groove to guide coupling of the stopper, and wherein the stopper comprises:
• a stopper body that supports the valve spring;
• and
• at least one guide protrusion that protrudes from the stopper body to move along the at least first guide groove.

A linear compressor, comprising:

• a shell;
• a cylinder provided in the shell to define a compression space for a refrigerant;
• a frame to fix the cylinder to the shell;
• a piston reciprocated within the cylinder in an axial direction;
• a discharge valve disposed at one end of the cylinder to selectively discharge the refrigerant compressed in the compression space;
• a discharge cover coupled to the frame, the discharge cover having at least one chamber to reduce pulsation of the refrigerant discharged through the discharge valve;
• a valve spring installed on the discharge cover to provide an elastic force to the discharge valve;
• a stopper coupled to the valve spring to restrict deformation of the valve spring;
• and
• a first spacer disposed between the valve spring and the stopper to space the valve spring from the stopper, the first spacer including a spacer body having a ring shape and a spacer groove recessed from an outer circumferential surface of the spacer body;
• and
• a second spacer installed between the stopper and the discharge cover to support the stopper.