REFRIGERANT GAS GUIDING MECHANISM FOR PISTON TYPE COMPRESSOR

摘要

A piston type compressor in which each of pistons is accommodated in each of a plurality of cylinder bores arranged around a rotating shaft. Suction, compression and delivery of refrigerant gas is carried out when each piston is reciprocated by virtue of interlocking with rotation of the rotating shaft. In addition, a valve accommodating chamber is provided in the vicinity of a cylinder bore. A plurality of ports are provided for establishing communication between the valve accommodating chamber and each cylinder bore. A rotary valve adapted to be rotated in synchronism with the reciprocating motion of the piston is accommodated in the valve accommodating chamber. A suction passageway that is sequentially connected with each port in synchronism with the rotation of the rotary valve is provided in the rotary valve for introducing refrigerant gas into each cylinder bore. Furthermore, a seal area is provided on the rotary valve for sequentially closing each port in synchronism with the rotation of the rotary valve. Moreover, a groove capable of trapping refrigerant gas entering between the valve accommodating chamber and the rotary valve is formed in the rotary valve.