公开(公告)号：US4970770A

公开(公告)日：1990-11-20

申请号：US403029

申请日：1989-08-31

申请人： Gosta Jansson ,  Berndt Wadell ,  Per-Olof Jakobsson

发明人： Gosta Jansson ,  Berndt Wadell ,  Per-Olof Jakobsson

IPC分类号： B21C37/24 ,  B21D53/08 ,  F28D7/08 ,  F28F1/32 ,  F28F19/02

CPC分类号： F28F19/02 ,  B21C37/24 ,  B21D53/085 ,  F28D7/08 ,  F28F1/32 ,  Y10T29/49375 ,  Y10T29/4938 ,  Y10T29/49888 ,  Y10T29/4994

摘要： The invention relates to a heat-exchanger (10) incorporating circulation tubes (16) for conducting a first heat-transfer medium, end plates (12), and surface-enlarging plate-like fins (14) secured to the outer peripheral surfaces of the circulation tubes and arranged to be contacted with a second heat-transfer medium, the fins being firmly secured to a plurality of circulation tube sections, which extend through registering holes (18) formed in the fins (14). The fins are secured to the tube sections by expanding the tubes so as to enlarge the periphery thereof. The contact surfaces of the fins about the inside periphery of the holes (18) which engage against the circulation tubes (16) are cylindrical and extend parallel to the longitudinal axis of the circulation tubes over at least a greater part of the axial extent of the holes, which affords stable attachment and good heat-transfer properties. The tube sections may be interconnected to provide the desired flow path(s), by tube elbows welded to the projecting ends of the tube sections. The whole of the heat-exchanger (10) is coated with an impervious, protective surface layer, for example enamel, applied after the tube sections have been expanded to their final configuration.

摘要翻译： 本发明涉及一种热交换器（10），其包括用于传导第一传热介质的循环管（16），端板（12）和固定到外周表面的表面扩大的板状翅片（14） 所述循环管被布置成与第二传热介质接触，所述翅片牢固地固定到多个循环管部分，所述多个循环管部分延伸穿过形成在所述翅片（14）中的配准孔（18）。 翅片通过膨胀管而被固定到管部分，以便使其周边增大。 围绕与循环管（16）接合的孔（18）的内周边的翅片的接触表面是圆柱形的，并且平行于循环管的纵轴在至少大部分的轴向范围内延伸 孔，其提供稳定的附着和良好的传热性能。 管段可以互连以通过焊接到管段的突出端的管弯头来提供所需的流动路径。 整个热交换器（10）涂覆有不可渗透的保护表面层，例如搪瓷，在管段已经扩展到其最终构造之后施加。