Patent ID: 7000424
Filing Date: 2006-02-21
Classification: F04C,F25B

Abstract:
1. 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.