HEAT EXCHANGER FIN AND METHOD OF MANUFACTURING HEAT EXCHANGER FIN

摘要

A heat exchanger fin and a method of manufacturing the heat exchanger fin, in which opposite ends of a corrugated fin are prevented from hanging downward (front-rear direction of a core section) from a core surface during brazing. A radiator (5) has the core section (4) which is formed by alternately stacking undulating fins (2) and tubes (3) one on another between a pair of reinforcement members (1, 1) which are placed at a predetermined interval and brazing the joints between the elements (1, 2, 3). A fin (2) is formed by compression such that the pitch of the undulations in longitudinal opposite end sections (2a) of the fin (2) is less than the pitch of the undulations in an intermediate section of the fin (2). On the downstream side in a fin conveyance direction, that end of a fin (2) which is on the downstream side in the fin conveyance direction is made to contact with a slope surface (15a) of a stopper (15) in synchronism with driving operation of a fin cutting movable blade (13). By this, the pitch at the opposite ends of the fin (2) is made smaller by compression.