Invention Grant
US08132326B2 Method and apparatus for forming a finned heat exchanger tube that includes an internal fin structure that is a spring formed from a spiral wire wound around a mandrel
有权
用于形成翅片式热交换器管的方法和装置，其包括内部翅片结构，所述内部翅片结构是由卷绕在心轴上的螺旋线形成的弹簧
- Patent Title: Method and apparatus for forming a finned heat exchanger tube that includes an internal fin structure that is a spring formed from a spiral wire wound around a mandrel
- Patent Title (中): 用于形成翅片式热交换器管的方法和装置，其包括内部翅片结构，所述内部翅片结构是由卷绕在心轴上的螺旋线形成的弹簧
-
Application No.: US12200605Application Date: 2008-08-28
-
Publication No.: US08132326B2Publication Date: 2012-03-13
- Inventor: Risto Castrén
- Applicant: Risto Castrén
- Applicant Address: FI Heinola
- Assignee: Retermia Oy
- Current Assignee: Retermia Oy
- Current Assignee Address: FI Heinola
- Agency: Stiennon & Stiennon
- Priority: FI20075602 20070831
- Main IPC: B23P15/26
- IPC: B23P15/26 ; F16L11/16
Abstract:
A method and equipment for making a needle-fin tube having needle-like external fin parts, and internal fin structure formed by a spiraled spring wire which expands to clamp again the tube in the needle-fin tubes. The wire used to form the internal fin is wound along and around a bar which is moved and rotated along a straight line. The bar is moved inside the needle-fin tube from its one end to the other and the wire is released from the bar to attach to the internal surface of the needle-fin tube under spring force.
Public/Granted literature
- US20090056131A1 Equipment and Method for Making a Needle-Fin Tube, and a Needle-Fin Tube Public/Granted day:2009-03-05
Information query
