| 摘要 |
The object of the present invention is to provide a heat exchanger which can prevent the tubes from being damaged by the heat stress caused by the temperature difference between the reinforcement members and the tubes of the core portion. A heat exchanger comprises a core portion having a plurality of tubes 12 a and fins 12 b which are arrange so as to be alternately laid in layers. In the core portion 12 , the tubes 12 a are arranged at the outermost ends in the piling direction V of the tubes 12 a and the fins 12 b and the inserts ( 14 ) which reinforce the core portion 12 are fixed to the tubes ( 12 a) and tanks ( 11, 13 ). |
