| 摘要 |
A refrigeration apparatus 10 comprises a compressor 12, a condenser 14, an expansion valve 16, an evaporator 18, a gas / liquid separator 20 for separating liquid refrigerant from a gaseous refrigerant passing from the evaporator to the compressor, and a heat exchanger 30 for transferring heat from refrigerant flowing between the compressor and the expander to liquid refrigerant separated by the separator. The separator may comprise an expansion chamber (22, fig 2) to decelerate flow of the refrigerant passing therethrough, and may separate the liquid from the gaseous refrigerant under gravity. A vapour return line 11g may permit evaporated liquid refrigerant to flow to the compressor. The heat exchanger may be located between the condenser and the expansion valve. A liquid storage chamber may collect the liquid refrigerant separated by the separator and the heat exchanger may transfer thermal energy (evaporate) to the liquid refrigerant in the storage chamber. An oil return line 40 may divert oil separated by the separator away from the liquid refrigerant and may be located between the separator and the heat exchanger. The heat exchanger may be a plate type or a first vessel inside a second vessel. |
