To provide a heat exchanger having improved water drainage performance with respect to condensation water.
In the heat exchanger 10, flat tubes 11 are arranged at a plurality of stages with plane parts 11a facing vertically. Corrugated fins 12 are arranged in ventilation spaces sandwiched between the flat tubes 11 vertically adjacent to each other. Water introduction parts 13 are arranged outside the ventilation spaces and extended to the vertical direction while connected to the flat tubes 11. In the water introduction parts 13 vertically adjacent to each other, the lower part of the water introduction part 13 positioned on the upper side is brought into contact with the upper part of the water introduction part 13 positioned on the lower side. Due to this structure, condensation water is easily made to flow downwardly via the water introduction parts 13, so as to improve water drainage.
KIN GENEI
NAKADA HARUO
KAMATA TOSHIMITSU
