| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat pump cycle device restricting vibration of an injection piping and having a degree of freedom improved.SOLUTION: A heat pump cycle device 100 connects between a water refrigerant heat exchanger 3 and a first expansion valve 4 and connects with an intermediate pressure part of a compressor 1 and has an injection piping 14 having a second expansion valve 22 and a capillary tube 23 assembled in series. The injection piping 14 has a bypass pipe 15 bypassing the capillary tube 23 and is provided with a solenoid valve 21. Control means 60 closes the solenoid valve 21 when a refrigerant circuit is energized as a heating cycle, performs a starting time injection control with the second expansion valve 22 being set to have a minimum opening degree, and when the refrigerant circuit is being operated as the heating cycle, opens and closes the solenoid valve 21 in reference to the expansion valve/solenoid valve control table and at the same time performs an operation time injection control for adjusting a degree of opening of the second expansion valve 22.SELECTED DRAWING: Figure 1 |
