Heat exchanger assembled without brazing in which adhesive is used to seal tube end portions and an end plate

摘要

In a mechanically assembled type heat exchanger, in which an end portion of an oval tube (14) is inserted into a barring hole (16a) of a core plate (16) and expanded to be press fit to the core plate (16). Then adhesive (24) is potted on the core plate (16) for sealing the press fit portion in the end of the tube (14). A reinforcing member (16e, 16f, 16g, 16h, 16i, 16j) is formed around the barring hole (16a) for increasing the rigidity of the core plate (16) so as to improve the durability of sealing.