Patent ID: 6077058
Filing Date: 2000-06-20
Classification: F04C

Abstract:
A rotary compressor comprising:a cylinder (6) in which a cylinder room (6a) is formed;side housings (7, 8) respectively disposed on both side surfaces in an axial direction of the cylinder (6) to close the cylinder room (6a);an annular piston (9) which is disposed in the cylinder room (6a) and is connected to the driving shaft (5) the annular piston being decentered from the central axis of the driving shaft (5);a blade (31) which is formed integrally with the piston (9) and protrudes from the outer periphery of the piston (9) to divide the cylinder room (6a) into a low pressure room (34) communicating with an inlet port (21) and a high pressure room communicating with a discharge port (22); anda swing bush (32) which is swingably disposed in a support hole (24) formed in the cylinder (6) and supports the blade (31) so that the blade (31) is swingable and movable forward and backward,rotation of the driving shaft (5) causing revolution of the piston (9) around the driving shaft (5) in the cylinder room (6a) through the blade (31) thereby compressing a fluid in the cylinder room (6a),the discharge port (22) being formed in at least one of the side housings (7) and disposed to be located in the proximity of the blade (31) and to communicate with the high pressure room (35),said rotary compressor further comprising in the cylinder for guiding a high-pressure fluid in the high pressure room (35) to the discharge port (22).