Refrigeration cycle unit for vehicle

A refrigeration cycle unit for a vehicle, which is interposed between an exterior heat exchanger and an interior heat exchanger and which exchanges heat between secondary refrigerants flowing through the exterior heat exchanger and the interior heat exchanger, is provided with: a base part; and a refrigeration cycle which is fixed to the main surface of the base and has a compressor, a condenser, an expansion valve, and an evaporator which are sequentially connected by piping through which a primary refrigerant flows, the compressor, the condenser, and the evaporator being fixed to the base such that the longitudinal directions thereof coincide with each other. 一种车辆用制冷循环单元，其介存于车外热交换器和车内热交换器之间，进行分别在这些车外热交换器和车内热交换器中流通的二次制冷剂之间的热交换，所述车辆用制冷循环单元具备：基部；以及制冷循环，固定于所述基部的主面，具有通过供一次制冷剂流通的配管依次连接的压缩机、冷凝器、膨胀阀以及蒸发器，所述压缩机、所述冷凝器以及所述蒸发器以它们的长尺寸方向一致的方式固定在所述基部上。