Multi-stage rotary compressor having rollers which are different in thickness

The rotary compressor provided with a sealed container containing:

• a driving element;
• and first and second rotary compression elements driven by a rotation shaft of the driving element, the displacement volume of the second rotary compression element being smaller than that of the first rotary compression element, and a refrigerant compressed by the first rotary compression element being compressed by the second rotary compression element to discharge the refrigerant into the sealed container, the rotary compressor comprising:
• first and second cylinders constituting the first and second rotary compression elements, respectively;
• first and second rollers fitted into first and second eccentric portions formed on the rotation shaft to eccentrically rotate in the first and second cylinders, respectively;
• and
• an intermediate partition plate which is disposed between the respective cylinders to close an opening of one of the opposite cylinders,
• a thickness of the first roller being set to be larger than that of the second roller,
• wherein the first rotary compression element is disposed on a driving element side of the intermediate partition plate, the inner diameters of the opposite cylinders are set to be equal, the diameter of the first eccentric portion is set to be smaller than that of the second eccentric portion, and the thickness of the first roller is set to be larger than that of the second roller.