| 摘要 |
<p>A header pipe for a heat exchanger in which ends of a plurality of stacked tubes (2) are inserted into tube insertion holes (5) of a pair of header pipes (4), with fins (3) interposed between the tubes (2). The header pipe (4) is made by rolling a plate into a cylinder and is formed with a plurality of tube insertion holes (5) in which to insert tubes and with a coolant inlet/outlet port (14, 15) through which a heat exchange medium flows in or out. The coolant inlet/outlet port constitutes a heat exchanger header pipe formed at a location between the tube insertion holes (5, 5). With this arrangement, the positions of the holes such as tube insertion holes or coolant inlet/outlet port are changed, thereby preventing deformations of these holes, improving assembly performance and solderability.</p> |
