| 摘要 |
<p>An oil cooler (11) comprises oil passage forming members (2A) formed by joining a pair of plates (20A), each of which has through holes (21) on both ends thereof and a channel portion (22) between the both through holes (21), to each other with recessed surfaces of the channel portions (22) facing each other, the pair of plates (20A) being disposed in parallel to each other with a horizontal spacing therebetween, and annular header forming members (4A) interposed between right and left ends of adjacent oil passage forming members (2A). Respective upper and lower end surfaces of the header forming member (4A) include flat portions (41) adapted to overlap flat portions (24) on edges of the through holes of the plate (20A), and recessed portions (42) fitted on convex surfaces on ends (22a) of the channel portions (22). Thus the annular header forming members (4A) are joined to peripheries of communication ports (23) which are defined by the through holes (21) and open ends of the channel portions (22) on the plates (20A) and which communicate with the header forming members.</p> |
