Compressor with two rotors coaxially disposed on a connecting assembly sleeved on the shaft that limits relative movement between them

A compressor, comprising:

• a housing;
• a first rotating shaft mounted in the housing;
• a connecting assembly sleeved on the first rotating shaft;
• and
• a first rotor assembly comprising a first rotor and a second rotor coaxially disposed on the connecting assembly, the connecting assembly configured to carry the first rotor and the second rotor to rotate about the first rotating shaft together;
• the connecting assembly is configured to limit the relative positions of the first rotor and the second rotor, such that there exists a clearance between the first rotor and the second rotor,
• wherein the distance between an end surface of the first rotor close to the second rotor and an end surface of the second rotor close to the first rotor in the axial direction of the first rotating shaft increases gradually from the axis of the first rotor assembly to the outer periphery of the first rotor assembly.