| 摘要 |
A rotary compressor includes a compression unit (12) that includes an annular cylinder (121S, 121T) including a cylinder inner wall (123S, 123T), a suction port, and a vane groove (128Sa, 128Ta), an end plate covering an end portion of the cylinder (121S, 121T), an annular piston (125S, 125T) revolving in the cylinder to form an actuation chamber (130S, 130T) between the cylinder inner wall (123S, 123T) and the annular piston (125S, 125T); and a vane (127S, 127T) protruding into the actuation chamber (130S, 130T) to divide the actuation chamber into a suction chamber (131S, 131T) and a compression chamber (133S, 133T). A discharge port (190S, 190T), which is provided in the end plate near the vane groove (128Sa, 128Ta), communicates with the compression chamber (133S, 133T), and a discharge groove (137S, 137T), which is provided in the cylinder inner wall (123S, 123T) near the vane groove (128Sa, 128Ta), communicates the compression chamber (133S, 133T) with the discharge port (190S, 190T), and one side end portion of the discharge groove (137S, 137T) is located in an end portion of a wall portion of the vane groove (128Sa, 128Ta) on the compression chamber side (133S, 133T). |
