Patent ID: 8057200

Claim:
A structure for discharging a refrigerant for a linear compressor, comprising: a cylinder in which the refrigerant flows in the axial direction; a piston reciprocated inside the cylinder, for compressing the refrigerant; a discharge valve assembly installed at a first end of the cylinder and opened and closed for discharging the refrigerant, wherein the discharge valve assembly includes a discharge valve for opening and closing the first end of the cylinder, a support cap fixed to the first end of the cylinder so as to cover the discharge valve and including a plurality of communication holes for discharging the refrigerant from inside the support cap, and a discharge valve spring for elastically supporting the discharge valve on the support cap; and a discharge cap for covering the discharge valve assembly, the refrigerant being discharged through the communication holes to a discharge space formed between the support cap and the discharge cap, the discharge space being partitioned into a plurality of sub-discharge spaces having different sizes, wherein the plurality of sub-discharge spaces include a plurality of small volume sub-discharge spaces and a large volume sub-discharge space, wherein the small volume sub-discharge spaces communicate with each other and the small volume sub-discharge spaces communicate with the large volume sub-discharge space, the discharge cap reducing a pulsation of the refrigerant by making the refrigerant flow from the small volume sub-discharge space to the large volume sub-discharge space.