| 摘要 |
<p>PROBLEM TO BE SOLVED: To improve the stability of an indoor temperature during a defrosting operation.SOLUTION: A container refrigeration device (1) includes: an indoor heat exchanger (35) including two heat exchange units (35a, 35b) and a switching mechanism (33) for switching over between a cooling operation and a defrosting operation in a refrigeration circuit (10). In the defrosting operation, a first defrosting operation for circulating refrigerant condensed in an outdoor heat exchanger (22) through the first heat exchange unit (35a) and the second heat exchange unit (35b) in this order and a second defrosting operation for circulating the refrigerant condensed in the outdoor heat exchanger (22) through the second heat exchange unit (35b) and the first heat exchange unit (35a) in this order are alternately performed. On an upstream side of the heat exchange units (35a, 35b), the refrigerant is overcooled and defrosted. On a downstream side of the heat exchange units (35a, 35b), the refrigerator is evaporated and the indoor air is cooled.</p> |
