STRUCTURE FOR REDUCTION OF VIBRATORY NOISE OF HERMETIC TYPE COMPRESSOR

PURPOSE: A structure for reduction of vibratory noise of hermetic type compressor is provided to minimize vibratory noise due to pressure pulse. CONSTITUTION: A gas intake hole(25) is formed to penetrate an inner circumferential surface of an inner space(P) of a cylinder and an outer surface of the cylinder. A pulse reductive groove with a certain space is formed on an inner circumferential wall of the gas intake hole to reduce pulse of gas. The pulse reductive groove comprises a penetrating part(26a); and a contact surface of an upper bearing or a lower bearing. The penetrating part is formed to penetrate an upper surface or a lower surface of the cylinder contacting with the upper bearing or the lower bearing. The contact surface of the upper bearing or the lower bearing covers the penetrating part. The pulse reductive groove reduces pulse of a specific frequency band by changing an inner volume thereof.