Heat exchange device and heat exchange unit

A heat exchange device comprising an assembly base and a heat exchange unit assembled to the assembly base, wherein

• the heat exchange unit includes:
• a first heat exchanger including a first heat exchange body having a first heat exchange flow path, a first port portion having a first communication flow path and integrated with the first heat exchange body, and a first pipe providing communication between the first heat exchange flow path and the first communication flow path, the first heat exchanger being assembled to the assembly base;
• and
• a second heat exchanger including a second heat exchange body having a second heat exchange flow path, a second port portion having a second communication flow path and integrated with the second heat exchange body, and a second pipe providing communication between the second heat exchange flow path and the second communication flow path, the second heat exchanger being assembled to the first heat exchanger, and
• when the first port portion and the second port portion are assembled together, the first heat exchanger and the second heat exchanger are integrated, and the first heat exchange flow path and the second heat exchange flow path communicate with each other.