To achieve miniaturization and improve productivity of a heat exchanger for heating, which includes a first heat core for exchanging heat between first liquid and blowing air to inside a vehicle cabin, and a second heat core for exchanging heat between second liquid, which has a high temperature and small flow rate than that of the first liquid, and blowing air heated by the first heat core.
The first heat core 10 and the second heat core 20 of the heat exchanger 2 for heating include a plurality of accumulated flat tubes 11 and 21, and inlet side tanks 12 and 22 to become cooling water inlet sides communicating to one sides in longitudinal directions of a plurality of tubes 11 and 21. At this point, the inlet side tanks 12 and 22 of the first heat core 10 and the second heat core 20 are integrated as a structure for dividing inside of one inlet side tank 50 into two by a partition wall 51. Furthermore, tubes 11 and 21 are integrated as well as fins 14 and 24 are integrated in the first heat core 10 and the second heat core 20.
KAKEHASHI SHINJI
NISHIKAWA MICHIO
OTA KOJI
NAGASAWA SATONARI
TORIGOE EIICHI
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