| 摘要 |
<p>A freezer device has a refrigerant circuit (10) and a recovery container (40) for oil. In the refrigerant circuit (10), a compressor (21), an outdoor heat exchanger (24), and an indoor heat exchanger (33) are connected to perform a freezing cycle. The oil recovery container (40) is connected to the suction side of the compressor (21). A refrigerant is circulated in the refrigerant circuit (10) to perform recovery operation to recover the oil to the recovery container (40). The freezer device also has compressor-controlling means (50) and fan-controlling means (70). The compressor-controlling means (50) steppingly increases operation capacity of the compressor (21) so that the temperature of the refrigerant on the low -pressure side in the refrigerant circuit (10) is equal to or higher than a predetermined value in an early stage of the recovery operation. The fan-controlling means (70) continuously drives an indoor fan (33a) at least during time in which the compressor (21) is driven. This constrains sudden start up of the compressor (21), and the refrigerant is reliably evaporated by the indoor heat exchanger (33), and as a result, lowering of the temperature of the refrigerant on the low-pressure side is constrained.</p> |
