Compressor having round part placed near outlet port

A compressor, comprising:

• a cylinder including a compression chamber, a suction port and a discharge port opposite to the suction port;
• a roller disposed in the compression chamber, the roller being eccentric with respect to an inner circumferential face of the cylinder and being configured to rotate within the cylinder;
• a plurality of vanes moveably inserted in the roller, the vanes being configured to move toward or away from the inner circumferential face of the cylinder and to divide the compression chamber into a plurality of compression sub-chambers;
• at least one a valve-recess defined in an outer face portion of the cylinder, the valve-recess fluidly coupled with the discharge port;
• a discharge valve assembly fixedly received in attached to the valve-recess, the discharge valve assembly being configured to open and close the discharge port;
• and
• a valve-recess cover coupled to the cylinder to cover the valve-recess, the cover including a curvature center coinciding with a curvature center of the cylinder,
• wherein
• the discharge port is a first discharge port and the cylinder includes a second discharge port spaced from the first discharge port,
• the at least one valve-recess includes first and second valve-recesses fluidly coupled with the first and second discharge ports respectively,
• the cylinder includes a protrusion between the first valve-recess and the second valve-recess first discharge port and the second discharge port, and
• an inner circumferential face of the cover contacts the protrusion,
• wherein the valve-recess cover includes:
• an inner circumferential face portion;
• and
• a groove in the inner circumferential face portion, the protrusion being configured to be received in the groove.

A compressor comprising:

• a casing;
• a drive motor housed in the casing;
• a rotatable shaft disposed within the casing;
• a primary side block housed in and fixed to the casing;
• a secondary side block spaced apart from the primary side block, the primary side block and the secondary side block surrounding the rotatable shaft;
• a cylinder interposed between and attached to the primary and secondary side blocks, the cylinder including a compression chamber, a suction port and at least one discharge port opposite to the suction port;
• a roller attached to the rotatable shaft and disposed in the compression chamber, the roller being eccentric with respect to an inner circumferential face of the cylinder, and being configured to rotate within the cylinder;
• a plurality of slots in the roller;
• a plurality of vanes moveably inserted in the slots, the vanes being configured to move toward the inner circumferential face of the cylinder and to divide the compression chamber into a plurality of compression sub-chambers;
• at least one valve-recess defined in an outer face portion of the cylinder;
• a discharge valve assembly fixedly received in the valve-recess, the discharge valve assembly being configured to open and close the discharge port;
• a valve-recess cover coupled to the cylinder to cover the valve-recess, the cover including a curvature center coinciding with a curvature center of the cylinder;
• and
• a discharge chamber being defined by the outer face of the cylinder, an inner circumferential face of the cover, and the primary and secondary side blocks, wherein the discharge chamber is configured to discharge compressed refrigerant through a refrigerant channel into an inner space in the casing,
• wherein
• the valve-recess is defined by an outer face of the cylinder, and the primary and secondary side blocks,
• the discharge port is a first discharge port and the cylinder includes a second discharge port spaced from the first discharge port,
• the at least one valve-recess includes first and second valve-recesses fluidly coupled with the first and second discharge ports respectively,
• the cylinder includes a protrusion between the first valve-recess and the second valve-recess, and
• an inner circumferential face of the cover contacts the protrusion.