| 摘要 |
This cooling chamber is provided with a compressor, a first heat exchanger, a second heat exchanger which includes an upstream heat exchanging unit and a downstream heat exchanging unit, a first expander connected to the first heat exchanger and the upstream heat exchanging unit, a second expander connected to the upstream heat exchanging unit and the downstream heat exchanging unit, and a switch unit, said cooling chamber cooling a storage chamber by means of the second heat exchanger. A first flow channel is configured from the compressor, the first heat exchanger, the first expander, the upstream heat exchanging unit, and the downstream heat exchanging unit, a second flow channel is configured from the compressor, the first heat exchanger, the upstream heat exchanging unit, the second expander, and the downstream heat exchanging unit, and the switch unit performs switching between the first flow channel and the second flow channel. |
