DELIVERY VALVE MECHANISM FOR RECIPROCATION TYPE COMPRESSOR

摘要

PROBLEM TO BE SOLVED: To release a delivery port at an optimum timing even when a pressure in a delivery chamber is fluctuated and to prevent breakage of a delivery valve mechanism even during high rotation. SOLUTION: A rotary delivery valve 37 comprises a notch part 43; and a notch groove 44 extending from the bottom on the inner circumferential side of the notch part 43 approximately in a circumferential direction on the advancing side in a rotation direction. The outer peripheral side of the notch groove 44 forms a flapper valve part 45 opening and closing due to a differential pressure between a cylinder bore and a delivery chamber and the behind side in a rotation direction of the notch part 43 forms a closedown part 46 not elastically deformed. The rotary delivery valve 37 is arranged in such a manner that it makes contact with the outer end face of a valve plate having a delivery port and the notch part 43 passes a delivery port right before completion the delivery stroke of a double ended piston in a cylinder bore, and integrally rotatably inserted in a drive shaft.