ROTARY COMPRESSOR

PURPOSE:To increase a discharge passage sectional area without any restriction to cylinder thickness by installing plural pieces of discharge vertical holes for coolant gas, housing a discharge valve and its supporting device in an adjoining state in the circumferential direction of a cylinder, and adjacently setting up each discharge port corresponding to each of these vertical hole in the circumferential direction. CONSTITUTION:Two discharge vertical holes 13 for coolant gas are installed in an adjoining state in the circumferential direction of a cylinder 9, and a discharge valve 11 and its supporting device 12 are housed each in the inner part. In addition, each discharge port 10 is also set up vertically in the circumferential direction in response to each discharge vertical hole 13. Therefore, the number of the discharge port 10 can be increased without any restriction to the axial thick size of the cylinder 9, and even at time of high discharge rate at high speed operation, a discharge passage sectional area is sufficiently secured so that a discharge pressure loss is reducible.