ROTARY TYPE FLUID MACHINE

摘要

Provided is a rotary type fluid machine, in which an annular actuator chamber (5) is constituted to include an annular wall portion (3a) on one side of a rotor (3) in the axial direction of a rotating shaft (4), and an annular groove (20b) so formed in a housing (2) as to confront the annular wall portion (3a). A reciprocating partition member (6) is so mounted on the housing as to move in parallel with the axis of the rotating shaft so that it can move to a protruded position to partition the annular actuation chamber and to a retracted position, at which it is retracted from the annular actuation chamber. This reciprocating partition member is urged toward the protruded position by an urging mechanism (7). An arcuate partition member (8) for partitioning the annular actuation chamber transversely is formed in the rotor.