Patent ID: 11885329
Assignee: FUJITSU GENERAL LIMITED
Field: nan (nan)
Classification: CPC nan | IPC F

Claim 3:
4. A rotary compressor comprising:
an annular cylinder including a suction port and a vane groove;
an end plate configured to close an end portion of the cylinder;
a discharge port provided on the end plate and partially located outside a cylinder inner wall of the cylinder;
an annular piston fitted to an eccentric portion of a rotating shaft rotationally driven by a motor, the annular piston revolving in the cylinder along the cylinder inner wall to form a working chamber with the cylinder inner wall; and
a vane configured to protrude into the working chamber from the vane groove provided in the cylinder and abut on the annular piston to divide the working chamber into a suction chamber communicating with the suction port and a compression chamber communicating with the discharge port, wherein
a discharge groove is formed on the cylinder inner wall on the compression chamber side, the discharge groove communicating with the compression chamber and the discharge port,
the compression chamber compresses a refrigerant by contracting as the annular piston revolves,
a part of the discharge groove protrudes beyond the discharge port in a circumferential direction of the cylinder and in a direction of revolution of the annular piston, and
the discharge groove is open on an inner wall of the vane groove on the compression chamber side.