Refrigerant piping unit and method of manufacturing pipe for the same
    6.
    发明授权
    Refrigerant piping unit and method of manufacturing pipe for the same 有权
    制冷管道单元及其制造方法

    公开(公告)号:US08251101B2

    公开(公告)日:2012-08-28

    申请号:US12316021

    申请日:2008-12-09

    IPC分类号: F16L3/00

    摘要: A refrigerant piping unit includes a pipe and a joint coupled to the pipe. The pipe includes a main section, an end section and a bent section between the main section and the end section. The end section includes a flange portion adjacent to the bent section and a thick end portion opposite to the bent portion with respect to the flange portion in an axial direction. The flange portion is expanded in a radially outward direction and is engaged with the joint. The thick end portion is expanded in the radially outward direction and has a thickness greater than a thickness of the main section. The thick end portion has a groove on its outer surface. The end section has a flat inner surface extending continuously from an inner surface of the bent section throughout inside of the flange portion and the thick end portion.

    摘要翻译: 制冷剂管道单元包括管道和联接到管道的接头。 该管包括主部分,端部部分和主部分与端部部分之间的弯曲部分。 端部包括与弯曲部相邻的凸缘部和与轴向相对于凸缘部相对于弯曲部的厚端部。 凸缘部分沿径向向外的方向膨胀并且与接头接合。 厚端部沿径向向外的方向膨胀并且具有大于主体部分的厚度的厚度。 厚端部在其外表面上具有凹槽。 端部具有从弯曲部的内表面连续延伸贯穿内侧的凸缘部和厚端部的平坦的内表面。