Hollow Fiber Connection

• US 20120119491A1
• Filed: 11/09/2011
• Published: 05/17/2012
• Est. Priority Date: 11/12/2010
• Status: Abandoned Application

• Current Assignee: Wyatt Technology Europe Gmbh (Waters Corporation)
• Original Assignee: Wyatt Technology Europe Gmbh (Waters Corporation)
• Inventors: Rösch, Ulrich, Jevdokimov, Wladimir
• Application Number:
  US13/292,331
• Publication Number:
  US 20120119491A1
• Time in Patent Office: Days
• US Class Current: 285/342
• CPC Class Codes: G01N 30/0005 Field flow fractionation
• CPC Class Codes: G01N 30/6004 end pieces

Abstract

A hollow fiber connection for the radial sealing connection between a hollow fiber and a connection element and/or between the hollow fiber and a housing, particularly for a device for field flux fractionating. Here, the hollow fiber is arranged in a housing connection of the housing. A sealing of the hollow fiber in reference to the connection element and/or the housing as well as in reference to the environment may be yielded according to the invention such that an annular element and a connection element are coupled via a connection part to the housing and/or the hollow fiber and that the hollow fiber connection achieves a sealing via a section between the hollow fiber and the connection element, which is created by an axial displacement of the annular element in reference to the connection element.

Claims

1. A hollow fiber connection for an end of a hollow fiber suitable for field flux fractionating, with a connection element comprising a penetrating opening to accept one end of the hollow fiber, characterized in an annular element that can be assembled at a connection element, with the annular element and the connection element being embodied such that the assembly of the annular element at the connection element leads to a reduction of the cross-section of the penetrating opening in the connection element for a sealing connection of the end of the hollow fiber with the section of the connection element limiting the penetrating opening.

2. The hollow fiber connection according to claim 1, wherein the annular element in the assembled state is arranged essentially pushed onto the connection element in the longitudinal axis (A) of the fiber.

3. The hollow fiber connection according to claim 1, wherein the forces acting in the assembled state of the annular element upon the connection element are aligned essentially radially in reference to the longitudinal axis (A) of the fiber in the direction towards the end of the hollow fiber.

4. The hollow fiber connection according to claim 1, wherein the connection element comprises a first section which is embodied to transfer radial pressures to the hollow fiber.

5. The hollow fiber connection according to claim 4, wherein the connection element is made from a compressible material, at least in the first section.

6. The hollow fiber connection according to claim 4, wherein the first section is made from a material which is largely incompressible in reference to axial forces in the direction of the longitudinal axis (A) of the fiber.

7. The hollow fiber connection according to claim 4, wherein the section limiting the penetrating opening is essentially contained entirely in the first section.

8. The hollow fiber connection according to claim 1, wherein the annular element comprises an interior surface which is formed conically expanded at least in a section so that an interior cone is formed.

9. The hollow fiber connection according to claim 8, wherein the interior surface of the interior cone is inclined at an angle smaller than 45 degrees in reference to the longitudinal axis of the annular element.

10. The hollow fiber connection according to claim 1, wherein the annular element comprises an axial length in the direction of the longitudinal axis (A) of the fiber which is greater than the axial length of a first jacket surface of the connection element in the first section.

11. The hollow fiber connection according to claim 1, wherein the connection element comprises at the section limiting the penetrating opening a bar projecting inwardly, which defines a first sealing surface embodied such that in the assembled state of the annular element it comes to a sealing contact at the connection element at an exterior jacket surface of a hollow fiber.

12. The hollow fiber connection according to claim 11, wherein the first sealing surface shows an essentially cylindrical form, with its roundness preferably deviating from an ideal cylindrical form by less than 2/100 millimeters.

13. The hollow fiber connection according to claim 12, wherein the bar, seen in the axial direction, is arranged essentially centrally in the first section.

14. The hollow fiber connection according to claim 1, further comprising a stop arranged at an exterior side of the connection element, serving as a stop for the annular element.

15. The hollow fiber connection according to claim 1, further comprising a connection part provided for coupling with a tubular housing part surrounding the hollow fiber under inclusion of the annular element as well as the connection element.

16. The hollow fiber connection according to claim 15, wherein the hollow fiber connection is embodied to produce a sealing connection between one end of the hollow fiber and the connection element as well as between the connection element and the tubular housing part accepting the hollow fiber by creating a sealing connection between one end of the hollow fiber and the connection element via the section limiting the penetrating opening via the connection part by way of axially displacing the annular element in reference to the connection element via radially acting forces and by a sealing connection being created between the connection element and the tubular housing part via the frontal face of the connection element.

17. The hollow fiber connection according to claim 16, wherein the connection part is embodied as a terminal nut for a screw connection with the tubular housing part.