HERMETIC RECIPROCATING COMPRESSOR

摘要

A compressor according to the embodiment of the present invention includes a rotary shaft on which a spiral groove is formed on the outer circumference; and a cap member which receives the lower part of the rotary shaft to enable the rotation of the rotary shaft inside and which is fixed to either a stator or a frame not to be rotated with the rotary shaft, thereby lifting oil stored in a closed case with a simple structure and reducing noise caused by the rotation of the rotary shaft.