Refrigerant cycling device

A refrigerant cycling device, comprising:

• a compressor, connected to at least two heat exchangers and a depressurizing means, for performing a cooling operation and a heating operation, wherein the compressor further comprises a first and a second rotary compression elements, and a refrigerant that is compressed and discharged by the first rotary compression element is introduced to the second rotary compression element;
• an intermediate cooling circuit for radiating heat of the refrigerant discharged from the first rotary compression element;
• a first valve device for opening a passage that allows the refrigerant discharged from the first rotary compression element passing through the intermediate cooling circuit before entering one of the two heat exchangers during the cooling operation;
• and
• a second valve device for inhibiting a heated refrigerant from the second rotary compression element to pass through the intermediate cooling circuit before entering one of the two heat exchangers during the heating operation.