HERMETICALLY SEALED ROTARY COMPRESSOR

摘要

A HERMETICALLY SEALED ROTARY COMPRESSOR INCLUDES A GENERALLY CYLINDRICAL SEALED VESSEL (1) HAVING AN OIL RESERVOIR (22) DEFINED THEREIN FOR ACCOMODATING A QUANTITY OF LUBRICATING OIL, A DRIVE UNIT WITHIN THE SEALED VESSEL (1), AND A COMPRESSOR MECHANISM WITHIN THE SEALED VESSEL (1). THE COMPRESSOR MECHANISM INCLUDES A CYLINDER (6) HAVING A COMPRESSION COMPARTMENT (4) DEFINED THEREIN AND ALSO HAVING UPPER AND LOWER OPENINGS, AN ECCENTRIC CAM (7) PROVIDED ON A CRANKSHAFT (5) FOR ROTATION TOGETHER THEREWITH, AND A RING-SHAPED PISTON (8) MOUNTED ON THE CRANKSHAFT (5) WHILE ENCIRCLING THE ECCENTRIC CAM (7) AND CAPABLE OF UNDERGOING A PLANETARY MOTION IN CONTACT WITH THE ECCENTRIC CAM DURING ROTATION OF THE ECCENTRIC CAM (7). THE CYLINDER (6) HAS A REFRIGERANT INTAKE PORT DEFINED THEREIN IN COMMUNICATION WITH THE COMPRESSION COMPARTMENT (4). A RADIAL VANE IS SLIDABLY ACCOMMODATED IN THE CYLINDER (6) FOR RECIPROCATING MOVEMENT IN A DIRECTION RADIALLY OF THE CYLINDER (6) AND HAVING A RADIAL INNER END HELD IN SLIDING CONTACT WITH AN OUTER PERIPHERAL SURFACE OF THE RING-SHAPED PISTON(8). AN OIL SUPPLY TUBE (20) HAVING FIRST AND SECOND OPEN ENDS OPPOSITE TO EACH OTHER IS DISPOSED WITH THE FIRST AND SECOND OPEN ENDS OPPOSITE TO EACH OTHER IS DISPOSED WITH THE FIRST OPEN END COMMUNICATED WITH THE OIL RESERVOIR (22) AND THE SECOND OPEN END COMMUNCATED WITH THE COMPRESSION COMPARTMENT (4) WHILE E GENERALLY INTERMEDIATE PORTION OF THE OIL SUPPLY TUBE (20) EXTENDS OUTSIDE THE SEALED VESSEL (1).(FIG 1)