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    • 8. 发明授权
    • Method of manufacturing heat exchanger tubing
    • 制造热交换器管道的方法
    • US5172476A
    • 1992-12-22
    • US744863
    • 1991-08-14
    • Shrikant M. Joshi
    • Shrikant M. Joshi
    • B21C37/15B23P15/26F28D1/03F28F1/02F28F3/04
    • F28F3/044B21C37/151B23P15/26F28D1/0391F28F1/022F28F2001/027Y10T29/49391
    • A condenser having single piece roll formed condenser tubes that are seam welded along an interfacing edge. The tube material is braze cladded on both sides for corrosion resistance and for high quality internal braze bonding of (1) longitudinal tube webs for optimizing burst strength, and (2) the tubes to associated air centers which are not cladded for an economical unit. The tubes can be readily made in a multiport or single port design by roll forming the longitudinal webs in each tube, and at discreet lengths along the tube length to provide a cut off area for sizing the tube and a smooth circumferential area where the tube enters the header providing a close fit and high quality brazed joints. This tube design provides material and cost advantage over the conventional extruded tubes and is readily fabricated using corrosion resistant alloys providing long service life. The number and spacing of the webs in this construction can be readily made by changing the number and spacing of the web forming rolls. The method provided by this invention provides increased output with higher machine speeds as compared to extrusion type processes.
    • 一个冷凝器,具有单件式辊形成的冷凝器管,沿着接口边缘缝合焊接。 管材在两侧被钎焊包覆以防腐蚀,以及(1)用于优化突破强度的纵向管腹板的高质量内部铜焊接合,以及(2)管道与相关联的空气中心不经济的单元。 管可以容易地通过在每个管中卷绕成形纵向腹板并以沿着管长度的谨慎长度形成多端口或单口设计,以提供用于使管尺寸调整的切断区域和管进入的平滑圆周区域 头部提供紧密配合和高品质钎焊接头。 该管设计提供了与常规挤出管相比的材料和成本优势,并且使用耐腐蚀合金容易地制造,其提供长的使用寿命。 这种结构中的腹板的数量和间距可以通过改变腹板成形辊的数量和间距而容易地制成。 与挤出型方法相比,本发明提供的方法提供了更高的机器速度的输出。