Refrigerating unit and refrigerator car

The invention provides a refrigerating unit. The refrigerating unit comprises a condensation assembly; the first evaporation assembly is used for cooling the refrigerating chamber; the second evaporation assembly is used for cooling the cab; the third evaporation assembly is used for cooling the power battery; the first evaporation assembly, the second evaporation assembly and the third evaporation assembly can be independently connected to the two ends of the condensation assembly in series through refrigerant pipelines, so that a refrigerant loop is formed. By means of the arrangement, one refrigerating system is adopted, cooling work of the refrigerating chamber, the cab and the power battery is completed in a one-driving-three mode, integration of the refrigerating function is achieved, the number of parts is reduced, and cost and power consumption are reduced. 本申请提供了一种制冷机组，包括：冷凝组件；第一蒸发组件，用于对冷藏室降温；第二蒸发组件，用于对驾驶室降温；第三蒸发组件，用于对动力电池降温；其中，所述第一蒸发组件、所述第二蒸发组件和所述第三蒸发组件均能够通过制冷剂管路单独串联在所述冷凝组件的两端，以形成制冷剂回路。如此设置，采用一套制冷系统