| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce unpleasant refrigerant sound occurring when a refrigerant expands in a two-phase state that liquid refrigerant and gaseous refrigerant are mixed, in a throttle device of refrigeration cycle equipment. <P>SOLUTION: The refrigeration cycle equipment includes a compressor, a four-way valve, a first heat exchanger, a first throttle device, a second throttle device and a second heat exchanger, and connects them in a ring-like form. The first throttle device is equipped with an internal heat exchanger which performs heat exchange with an inlet piping to the compressor. Further, between the first throttle device and the second throttle device, a refrigerant state amount detector for detecting a refrigerant state amount and a load detector for detecting a load of the refrigeration cycle equipment are provided. By comparing the refrigerant state amount detected by the refrigerant state amount detector with a state amount of saturated liquid corresponding the detected load, opening of the second throttle device is controlled so that an outlet refrigerant of the first throttle device becomes smaller than a predetermined specific enthalpy. <P>COPYRIGHT: (C)2013,JPO&INPIT |
