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    • 2. 发明授权
    • Heat transfer tube having grooved inner surface
    • 传热管具有开槽的内表面
    • US5791405A
    • 1998-08-11
    • US680215
    • 1996-07-11
    • Masayoshi TakiuraSeizo MasukawaHaruo KohnoShunroku Sukumoda
    • Masayoshi TakiuraSeizo MasukawaHaruo KohnoShunroku Sukumoda
    • B21B1/22B21B27/00B21B27/03B21C37/083B21C37/20F28F1/40F28F1/14
    • B21B27/005B21C37/083B21C37/20F28F1/40B21B1/227B21B27/03Y10T29/49384
    • 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..
    • 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。
    • 3. 发明授权
    • Heat transfer tube having grooved inner surface
    • 传热管具有开槽的内表面
    • US5934128A
    • 1999-08-10
    • US063722
    • 1998-04-21
    • Masayoshi TakiuraSeizo MasukawaHaruo KohnoShunroku Sukumoda
    • Masayoshi TakiuraSeizo MasukawaHaruo KohnoShunroku Sukumoda
    • B21B1/22B21B27/00B21B27/03B21C37/083B21C37/20F28F1/40B21D53/06
    • B21B27/005B21C37/083B21C37/20F28F1/40B21B1/227B21B27/03Y10T29/49384
    • 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..
    • 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。