| 摘要 |
A freezing cycle for a vehicle using a dual pipe type heat exchanger is provided to preliminarily expand liquid refrigerant at an outlet in a condenser so as to change the liquid refrigerant into 2-phase refrigerant. A freezing cycle for a vehicle comprises a compressor(10), which is driven by receiving driving force of an engine, a condenser(20) condensing refrigerant compressed in the compressor, an expansion valve(30) throttling refrigerant condensed in the condenser, a vaporizer(40) for evaporating refrigerant introduced from the expansion valve, a dual pipe heat exchanger(50) for performing heat exchange between refrigerant of an outlet of the condenser and refrigerant of an outlet of the vaporizer, and an auxiliary expansion valve(60) installed between the condenser and the dual pipe heat exchanger so as to preliminarily expand liquid refrigerant of the outlet of the condenser. The auxiliary expansion valve is installed at an inner side or an outer side of the dual-pipe heat exchanger.
|
