Linear compressor

A linear compressor, comprising:

• a shell comprising a discharge;
• 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 side of the cylinder to selectively discharge the refrigerant compressed in the compression space;
• a discharge cover having at least one chamber to reduce pulsation of the refrigerant discharged through the discharge valve, and a discharge hole to guide the discharged refrigerant to the discharge of the shell;
• a valve spring installed on the discharge cover to allow the discharge valve to elastically move;
• and
• a stopper coupled to the valve spring to restrict an opening degree of the discharge valve, wherein the stopper is installed inside of the discharge cover.

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
• at least one spacer disposed adjacent to the stopper.