Rotary vane compressor with residual refrigerant removal

A rotary compressor comprising:

• a cylinder including a discharge guide groove and a vane slot, the discharge guide groove being disposed at a side of the vane slot;
• a roller configured to orbit in the cylinder and including a hinge groove;
• a vane having a first portion and a second portion, the first portion being inserted into the hinge groove of the roller, and the second portion being inserted into, and configured to slide along, the vane slot of the cylinder;
• and
• a bearing plate that engages with an axial surface of the cylinder and defines a discharge port that fluidly communicates with the discharge guide groove,
• wherein the discharge port fluidly communicates with a space defined between the vane slot and the discharge guide groove,
• wherein the discharge guide groove fluidly communicates with the discharge port,
• wherein the bearing plate includes a discharge passage extending between the discharge guide groove and the space, and
• wherein the discharge passage comprises at least one of a hole or a groove that extends through between the discharge guide groove and the vane slot.

A rotary compressor comprising:

• a cylinder including a discharge guide groove and a vane slot, the discharge guide groove being disposed at a side of the vane slot;
• a roller configured to orbit in the cylinder and including a hinge groove;
• a vane having a first portion and a second portion, the first portion being inserted into the hinge groove of the roller, and the second portion being inserted into, and configured to slide along, the vane slot of the cylinder;
• and
• a bearing plate that engages with an axial surface of the cylinder and defines a discharge port that fluidly communicates with the discharge guide groove,
• wherein the discharge port overlaps at least partially with the vane slot or the hinge groove in an axial direction,
• wherein the discharge port is coaxial with the discharge guide groove in the axial direction, and
• wherein an inner diameter of the discharge port at a side that faces the discharge guide groove is larger than an inner diameter of the discharge guide groove.