Heat transfer tube having grooved inner surface
    1.
    发明授权
    Heat transfer tube having grooved inner surface 失效
    传热管具有开槽的内表面

    公开(公告)号:US5934128A

    公开(公告)日:1999-08-10

    申请号:US063722

    申请日:1998-04-21

    摘要: The present invention has the object of increasing the heat exchanging performance of heat transfer tubes having grooved inner surfaces. In order to achieve this object, the heat transfer tubes having grooved inner surfaces according to the present invention have fins which are formed consecutively in a circumferential direction on the inner surface of a metallic tube. The inner surface of the metallic tube is divided into regions R1.about.R4 in the circumferential direction. The inclination angle .alpha. with respect to the axis of the heat transfer tube of the fins 2 in odd-numbered regions when counting from one of the regions is 10.about.25.degree., and the inclination angle .beta. with respect to the axis of the heat transfer tube of the fins 2 in even-numbered regions when counting from the region is -10.about.-25.degree.. The pitch of the fins 2 is 0.3.about.0.4 mm, the height of the fins from the inner circumferential surface of the metallic tube is 0.15.about.0.30 mm, and the angle formed between the side surfaces of each fin is 10.about.25.degree..

    摘要翻译: 本发明的目的是增加具有槽内表面的传热管的热交换性能。 为了实现该目的,根据本发明的具有槽内表面的传热管具有在金属管的内表面上沿圆周方向连续形成的翅片。 金属管的内表面沿圆周方向分成区域R1差。 当从一个区域计数时,相对于奇数区域中的翅片2的传热管的轴线的倾斜角α为10°差25°,相对于传热轴线的倾斜角β 从区域计数时,偶数区域中的散热片2的管为-10°DIFFERENCE -25°。 翅片2的节距为0.3mm,距离金属管的内周面的翅片的高度为0.15mm,每个翅片的侧面之间形成的角度为10°F。

    Heat transfer tube having grooved inner surface
    2.
    发明授权
    Heat transfer tube having grooved inner surface 失效
    传热管具有开槽的内表面

    公开(公告)号:US5791405A

    公开(公告)日:1998-08-11

    申请号:US680215

    申请日:1996-07-11

    摘要: The present invention has the object of increasing the heat exchanging performance of heat transfer tubes having grooved inner surfaces. In order to achieve this object, the heat transfer tubes having grooved inner surfaces according to the present invention have fins which are formed consecutively in a circumferential direction on the inner surface of a metallic tube. The inner surface of the metallic tube is divided into regions R1.about.R4 in the circumferential direction. The inclination angle .alpha. with respect to the axis of the heat transfer tube of the fins 2 in odd-numbered regions when counting from one of the regions is 10.degree..about.25.degree., and the inclination angle .beta. with respect to the axis of the heat transfer tube of the fins 2 in even-numbered regions when counting from the region is -10.degree..about.-25.degree.. The pitch of the fins 2 is 0.3.about.0.4 mm, the height of the fins from the inner circumferential surface of the metallic tube is 0.15.about.0.30 mm, and the angle formed between the side surfaces of each fin is 10.degree..about.25.degree..

    摘要翻译: 本发明的目的是增加具有槽内表面的传热管的热交换性能。 为了实现该目的,根据本发明的具有槽内表面的传热管具有在金属管的内表面上沿圆周方向连续形成的翅片。 金属管的内表面沿圆周方向分成区域R1差。 当从一个区域计数时,相对于奇数区域中的翅片2的传热管的轴线的倾斜角α为10°差25°,相对于热轴线的倾斜角β 从区域计数时,偶数区域的翅片2的传送管为-10°DIFF-25°。 翅片2的间距为0.3mm,距离金属管的内周面的翅片高度为0.15mm,每个翅片的侧面之间形成的角度为10°F。

    Heat transfer tubes and method for manufacturing
    3.
    发明授权
    Heat transfer tubes and method for manufacturing 失效
    传热管及其制造方法

    公开(公告)号:US5052476A

    公开(公告)日:1991-10-01

    申请号:US574490

    申请日:1990-08-28

    摘要: A heat transfer tube having an inner surface in which are formed primary grooves and secondary grooves. The primary grooves parallel to one another, extending at an angle to the longitudinal direction of the heat transfer tube and secondary grooves parallel to one another, extending an angle to the primary grooves. At the intersections of the primary and secondary grooves is formed a series of pear-shaped grooves whose inner opening dimension is smaller than the dimension of the bottom of the pear-shaped groove.

    摘要翻译: 一种传热管,其内表面形成有初级槽和次级槽。 主槽彼此平行地延伸,与传热管的纵向方向成一角度,并且辅助槽彼此平行,与主槽延伸一角度。 在一次槽和第二槽的交点处形成一系列梨形槽,其内开口尺寸小于梨形槽底部的尺寸。