ROTARY COMPRESSION MECHANISM

摘要

A rotary compression mechanism equipped with: a shaft (12) that is mounted to a casing (1); a drive cylinder (8) that is supported by the shaft (12) so as to be capable of rotating; a rotor (11) that is installed inside the drive cylinder (8); a transmission mechanism (30) that couples the drive cylinder (8) and the rotor (11) such that the drive cylinder (8) and the rotor (11) rotate at a uniform speed; and a partition plate (14, 14a, 140) that partitions a space formed by the inner periphery of the drive cylinder (8) and the outer periphery of the rotor (11). The rotor (11) has a second centre (O2) of rotation that is eccentric with respect to a first centre (O1) of rotation of the drive cylinder (8) such that the outer periphery of the rotor (11) comes into contact with a contact section (C) at the inner periphery of the drive cylinder (8). The partition plate (14) has a structure wherein one end section of the partition plate (14) passes freely in and out of the vicinity of the inner periphery of the drive cylinder (8) or the vicinity of the outer periphery of the rotor (11).