公开(公告)号：US06269541B1

公开(公告)日：2001-08-07

申请号：US09300673

申请日：1999-04-27

Applicant: Takeshi Iguchi ,  Homare Kotate ,  Akira Uchikawa ,  Koji Hirakami

Inventor： Takeshi Iguchi ,  Homare Kotate ,  Akira Uchikawa ,  Koji Hirakami

IPC: B23K3100

CPC classification number: B23K1/0012 ,  B23K2101/14 ,  F28F1/126 ,  Y10T29/49377 ,  Y10T29/4938 ,  Y10T29/49393

Abstract: Fins and tubes are brazed by brazing material spread on the inside of bent portions. As the interval between the fins and the tubes does not increase upon melting the brazing material, the tubes and the fins can be easily piled and assembled with each other, and the operability in assembling a heat exchanger can be improved. Further, as the brazing material remains mainly around the bent portions, most parts of the fins and the tubes are not covered with the brazing material, and there is no diffusion of the brazing material at the heating of the brazing step. Accordingly, heat exchanging performance of the heat exchanger can be improved, and even if the thickness of the fins and that of the tubes are reduced, the occurrence of the erosion can be prevented.

Abstract translation: 金属丝和管被钎焊材料钎焊在弯曲部分的内侧。 由于翅片和管之间的间隔在钎焊材料熔化时不会增加，因此可以容易地将管和翅片堆叠并组装，并且可以提高组装热交换器的可操作性。 此外，由于钎焊材料主要保持在弯曲部分周围，所以散热片和管的大部分部分不被钎焊材料覆盖，并且在钎焊步骤的加热期间钎焊材料不会扩散。 因此，可以提高热交换器的热交换性能，即使减少散热片和管的厚度，也可以防止侵蚀的发生。