| 摘要 |
A fabricated flat heat exchanger tube, applicable especially to cooling radiators for motor vehicle engines, is divided into two by a reinforcing partition. The partition consists of a pleat extending into the interior of the tube and formed in the sheet metal strip from which the tube is fabricated. The regions of the strip which are adjacent to the pleat constitute a first main wall of the tube, while its two terminal or marginal regions are bent back at 180 degrees into the interior of the tube from the adjacent regions that constitute the second main wall of the tube. These terminal regions are brazed sealingly to the pleat. The outer dimensions of the tube in transverse cross section, and the quality of brazing, do not depend on the exact width of strip. |
