STARTING SHOCK LIGHTENING DEVICE OF PISTON TYPE COMPRESSOR

摘要

PROBLEM TO BE SOLVED: To provide a starting shock lightening device of a piston type compressor capable of effectively performing restricting action even if a restriction passage is set to be short. SOLUTION: A movable discharge valve 53 is arranged corresponding to a discharge hole 52 on the rear side. The movable discharge valve 53 is moved between an acting position and a non-acting position by movement of a spool 48. Movement of the spool 48 from the non-acting position to the acting position is performed by supplying pressure in a compression chamber 23A on the front side to a control chamber 60 through a pressure supply passage 61. A first restriction passage 62 for restricting the supply pressure is constituted so that inside of a valve forming body 13 on the front side, a part of the rear face 72 of a valve plate 13a is made into a rough face 72a by shot peening, and the rough face 72a is blockaded with the front face 71 of a suction valve forming plate 13d.