ROTARY COMPRESSOR

摘要

A rotary compressor comprises a motor portion (22) and a compression mechanism portion (21) for carrying out a two-stage compression, which are provided within a sealed housing (1). The motor portion includes a stator (22a) and a rotor (22b). The compression mechanism portion includes a first cylinder (23a), a second cylinder (23b), a crankshaft (27), a main bearing (25) and a sub-bearing (26). The crankshaft is used to drive respectively a first piston (28a) and a second piston (28b) to rotate eccentrically within a compression chamber (24a) of the first cylinder and a compression chamber (24b) of the second cylinder. The main bearing and the sub-bearing are used to support the crankshaft. The ends of a first slider (29a) and a second slider (29b) are respectively in contact with the outer circumferences of the first piston and the second piston. The gas discharged from the compression chamber of the first cylinder into the sealed housing is sucked into the compression chamber of the second cylinder, and a refrigerant injecting device (16) is provided on the compression chamber of the second cylinder for communicating with it. The compressor has the advantages of high air-conditioning capacity, high efficiency, reliable security, and wide range of application.