The refrigerating unit comprises a condenser, a compressor, an evaporator, a first expansion valve and a flow path switching device, the flow path switching device is provided with an inlet, a first outlet and a second outlet, the inlet communicates with an exhaust port of the compressor, the first outlet communicates with the first end of the condenser, and the second outlet communicates with the second end of the condenser; the second end of the condenser communicates with the first end of the first expansion valve, the second end of the first expansion valve communicates with the first end of the evaporator, the second end of the evaporator communicates with an air suction port of the compressor, and the second outlet communicates with the first end of the evaporator; in the refrigeration mode, the flow path switching device is operated, so that the inlet is communicated with the first outlet, and the inlet is cut off from the second outlet; and in the heating mode, the flow path switching device is operated, so that the inlet is communicated with the second outlet, and the inlet is cut off from the first outlet. Compared with the condition that a heating module is externally arranged on a traditional refrigerating unit and power is supplied independently, an external heating module and a leading cable are not needed, and the operation safety of the refrigerator car is improved.
本申请公开一种制冷机组及冷藏车,机组包括冷凝器、压缩机、蒸发器、第一膨胀阀和流路切换装置,流路切换装置设有入口、第一出口和第二出口,入口与压缩机的排气口连通,第一出口与冷凝器的第一端连通,冷凝器的第二端与第一膨胀阀的第一端连通,第一膨胀阀的第二端与蒸发器的第一端连通,蒸发器的第二端与压缩机的吸气口连通,第二出口与蒸发器的第一端连通;制冷模式下,通过操作流路切换装置,使入口与第一出口连通,入口与第二出口截止;制热模式下,通过操作流路切换装置,使入口与第二出口连通,入口与第一出口截止。本申请相对于传统制冷机组上外置加热模块且单独供电的情况,无需外置加热模块及引接线缆,提高了冷藏车的运行安全性。
Refrigerating unit and refrigerator car
制冷机组及冷藏车
2024-03-08
Patent
Electronic Resource
Chinese
IPC: | F25B Kältemaschinen, Kälteanlagen oder Kälteverfahren , REFRIGERATION MACHINES, PLANTS, OR SYSTEMS / B60P Fahrzeuge zum Transport von Lasten oder zum Befördern, Tragen oder Aufnehmen besonderer Lasten oder Gegenstände , VEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS |
Refrigerating unit for refrigerator car and refrigerator car
European Patent Office | 2021
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