US20040051317A1 - Micro-tube connection - Google Patents

Micro-tube connection Download PDF

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Publication number
US20040051317A1
US20040051317A1 US10/627,511 US62751103A US2004051317A1 US 20040051317 A1 US20040051317 A1 US 20040051317A1 US 62751103 A US62751103 A US 62751103A US 2004051317 A1 US2004051317 A1 US 2004051317A1
Authority
US
United States
Prior art keywords
micro
tube
joint
flange
recess
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US10/627,511
Inventor
Raymond Charles
Yuves Fouillet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Commissariat a lEnergie Atomique CEA filed Critical Commissariat a lEnergie Atomique CEA
Priority to US10/627,511 priority Critical patent/US20040051317A1/en
Assigned to COMMISSARIAT A L'ENERGIE ATOMIQUE reassignment COMMISSARIAT A L'ENERGIE ATOMIQUE ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHARLES, RAYMOND, FOUILLET, YVES
Publication of US20040051317A1 publication Critical patent/US20040051317A1/en
Priority to US10/943,605 priority patent/US7513535B2/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K99/00—Subject matter not provided for in other groups of this subclass
    • F16K99/0001—Microvalves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K21/00—Making hollow articles not covered by a single preceding sub-group
    • B21K21/12—Shaping end portions of hollow articles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15C—FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
    • F15C5/00—Manufacture of fluid circuit elements; Manufacture of assemblages of such elements integrated circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K99/00—Subject matter not provided for in other groups of this subclass
    • F16K99/0001—Microvalves
    • F16K99/0003—Constructional types of microvalves; Details of the cutting-off member
    • F16K99/0005—Lift valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K99/00—Subject matter not provided for in other groups of this subclass
    • F16K99/0001—Microvalves
    • F16K99/0003—Constructional types of microvalves; Details of the cutting-off member
    • F16K99/0017—Capillary or surface tension valves, e.g. using electro-wetting or electro-capillarity effects
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/025—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges
    • F16L19/028—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall
    • F16L19/0283—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the pipe ends having integral collars or flanges the collars or flanges being obtained by deformation of the pipe wall and having a bell-mouthed shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K99/00—Subject matter not provided for in other groups of this subclass
    • F16K2099/0073—Fabrication methods specifically adapted for microvalves
    • F16K2099/0076—Fabrication methods specifically adapted for microvalves using electrical discharge machining [EDM], milling or drilling

Abstract

The recess (12) between the main connecting part (8) and a collar (9) contains a toroidal or otherwise shaped sealing ring or joint (3) and the end of a tube (1) incorporating an outer flange (2), whose thickness becomes zero at the crushing bulge (4) of the sealing ring (3). An excellent seal is ensured at this location, even for pressurized fluids, and the assembly can easily be dismantled.

Description

  • The present invention relates to the connection of a micro-tube to a structure. [0001]
  • The tubes in question can be flexible, rigid or semi-rigid, have a very small diameter of approximately one millimetre and are able to carry gaseous or liquid fluids at a pressure of several bars. [0002]
  • The sealing at the ends of such micro-tubes is not then easy to ensure in an appropriate manner and requires either crimping, which reduces the opening cross-section of the tube, or complicated and costly fitting, or bonding, which does not permit an easy replacement of the tubes. [0003]
  • The present invention proposes a simple, reliable and dismantlable connection. It is characterized in that it comprises an elastic, cambered joint surrounding the micro-tube, a flange fashioned around the micro-tube tapering out of the micro-tube and extending up to a bulging circumference of the joint, and a collar on the structure, joined to such structure whilst forming a recess in which the joint is held between the faces of the recess on which it bears, the flange bearing on one of said faces. [0004]
  • The flange bearing on one of the faces of the recess ensures a good sealing at this location and this is perfected by the joint which, compressed in the recess in the axial direction of the micro-tube, presses the flange against said face of the recess, whilst offering a supplementary sealing ring around the flange.[0005]
  • Other features, characteristics and advantages of the invention will be described with reference to the attached drawings. [0006]
  • FIG. 1 shows in cross-section an embodiment of the invention, FIGS. 1A and 1B show two variants of FIG. 1 and FIGS. 2 and 3 show an embodiment of the turned-up flange.[0007]
  • A [0008] micro-tube 1 is shown in FIG. 1 and terminates in a turned-up flange 2 held in the connection forming the subject matter of the invention. The turned-up flange 2 is in one piece with the micro-tube 1. The connection of the micro-tube 1 also comprises a sealing ring or joint 3, which can be toroidal in the free state and has opposing bulges 4 and 5 bearing on two faces, respectively 6 and 7, of a main structural part 8 and a collar 9. The main structure part 8 carries a channel 10 extended by the micro-tube 1. The turned-up flange 2 bears on the surface 6 of said main structural part 3, the joint 3 is placed on the turned-up flange 2 and the collar 9 is placed on the joint 3 in order to compress the latter and secure the turned-up flange 2 whilst maintaining it on the face 6. The main structural part 8 can be joined to the collar 9 by a thread 11 on their surfaces making it possible to join them directly by screwing and to move them together as desired by regulating the height of a recess 12 defined by the faces 6 and 7. The collar 9 and structure 8 can be pressed or moved together by any linking means other than direct securing obtained with the aid of the thread 11 referred to in exemplified manner here.
  • The [0009] joint 3 is introduced onto the micro-tube 1 and bears on the turned-up flange 2. Its small diameter is substantially equal to the external diameter of tube 1 and the turned-up flange 2 tapers continuously towards the outside (on moving away from the micro-tube 1) and is cancelled out at a diameter corresponding to that of the bulge 4.
  • In a preferred embodiment, the mean diameter of the [0010] toroidal sealing ring 3 is approximately equal to the external diameter of the turned-up flange 2, so as to ensure a pressure on said flange 2 and the sealing between said flange and the face 6 of the structure 8.
  • As the [0011] joint 3 is pressed by the collar 9, as a consequence it presses the turned-up flange 2 against the opposite surface 6, thus opposing a detachment under the pressure of the fluid flowing through the micro-tube 1 and channel 10 of the main part 8 and tending to separate them. Sealing is mainly produced at the bulge 8 and experience has proved that it remains for fluid pressures reaching 10 bars. In the case of a high fluid pressure, it is advantageous to place the joint 3 in a recess 14, 15 made either on the face 7 of the collar 9, or on the face 6 of the structure 8, so that the areas round the corresponding bulge 4 or 5 of the joint 3 penetrate the same and the radial expansion of the joint 3 is in this way combatted. The recesses 14 and 15 are illustrated in FIGS. 1A and 1B. Unlike the recess 12, they provide support to the periphery of the joint 3. Normally the main structural part 8 is used for multiple connections and has numerous channels 10 connected to the same number of micro-tubes 1 and the recess 12 is wide enough to include the network of connected micro-tubes 1. A circle of screws is then used for joining the collar 9 to the main structural part 8. In other variants, the collar 9 could have an external thread and the main part 8 an internal thread, unlike what is shown here, or other known means for creating these two parts and for moving them together.
  • A production method for the turned-[0012] up flange 2 will be d scribed relative to FIGS. 2 and 3. The micro-tube 1 is inserted in a slot 16 of a die 17 in such a way that its end points somewhat to the outside. A conical punch 18 is introduced into the projecting end and widens it. A flat punch 19 (which can be an opposite face thereof) is then pressed onto the upper face of the die 17 crushing the end of the micro-tube 1 against said surface, which gives the turned-up flange 2 of FIG. 1.
  • This process is suitable for most micro-tube materials. However, others can be used, more particularly if the [0013] micro-tube 1 is flexible. It can then be hardened by heating or some other means, as a function of its composition, once the deformation has taken place. It is also possible to use glass micro-tubes. The aforementioned process will be accompanied by a heating operation in order to soften the glass.
  • Generally the flanges are produced by a permanent material deformation process. [0014]
  • The sealing ring or [0015] joint 3 illustrated is toroidal. Cross-sections other than circular are suitable provided that they have bulges bearing on the opposite faces 6 and 7 of the recess 12 in order to press the flange 2 against the face 6. In the same way a flange 2 is shown stopping at the diameter of the joint 3 corresponding to the greatest height (between bulges 4 and 5), but it is unnecessary to precisely respect this condition and the flange 2 could be slightly wider or narrower. However, the configuration shown is preferred.

Claims (5)

1. Connection of a micro-tube (1) to a structure (8), characterized in that it comprises an elastic, cambered joint (3) surrounding the micro-tube, a flange (2) fashioned around the micro-tube tapering out of the micro-tube and extending up to a bulging circumference (4) of the joint, and a collar (9) on the structure, joined to such structure whilst forming a recess (12, 14, 15) in which the joint is held between the faces (6, 7) of the recess on which it bears, the flange bearing on one of said faces.
2. Connection according to claim 1, characterized in that the collar and the structure are pressed towards one another with the aid of a linking means.
3. Connection according to claim 1, characterized in that the flange (2) is produced in one piece with the micro-tube (1).
4. Connection according to claim 1, characterized in that the recess (14, 15) is designed so as to support a periphery of the joint (3).
5. Connection according to claim 1, characterized in that the recess (12) includes several micro-tubes (1).
US10/627,511 2000-07-05 2003-07-25 Micro-tube connection Abandoned US20040051317A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US10/627,511 US20040051317A1 (en) 2000-07-05 2003-07-25 Micro-tube connection
US10/943,605 US7513535B2 (en) 2000-07-05 2004-09-17 Micro-tube connection

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR0008736A FR2811403B1 (en) 2000-07-05 2000-07-05 CONNECTION OF A MICRO-TUBE TO A STRUCTURE
FR0008736 2000-07-05
US09/898,733 US20020043805A1 (en) 2000-07-05 2001-07-03 Connection of a micro-tube to a structure
US10/627,511 US20040051317A1 (en) 2000-07-05 2003-07-25 Micro-tube connection

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US09/898,733 Continuation US20020043805A1 (en) 2000-07-05 2001-07-03 Connection of a micro-tube to a structure

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US10/943,605 Continuation US7513535B2 (en) 2000-07-05 2004-09-17 Micro-tube connection

Publications (1)

Publication Number Publication Date
US20040051317A1 true US20040051317A1 (en) 2004-03-18

Family

ID=8852127

Family Applications (3)

Application Number Title Priority Date Filing Date
US09/898,733 Abandoned US20020043805A1 (en) 2000-07-05 2001-07-03 Connection of a micro-tube to a structure
US10/627,511 Abandoned US20040051317A1 (en) 2000-07-05 2003-07-25 Micro-tube connection
US10/943,605 Expired - Lifetime US7513535B2 (en) 2000-07-05 2004-09-17 Micro-tube connection

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US09/898,733 Abandoned US20020043805A1 (en) 2000-07-05 2001-07-03 Connection of a micro-tube to a structure

Family Applications After (1)

Application Number Title Priority Date Filing Date
US10/943,605 Expired - Lifetime US7513535B2 (en) 2000-07-05 2004-09-17 Micro-tube connection

Country Status (5)

Country Link
US (3) US20020043805A1 (en)
EP (1) EP1170542B1 (en)
JP (1) JP4837843B2 (en)
DE (1) DE60102982T2 (en)
FR (1) FR2811403B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
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US9409169B2 (en) 2011-04-08 2016-08-09 Commissariat A L'energie Atomique Et Aux Energies Alternatives Microfluidic card connection device

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US20030080562A1 (en) * 2001-05-25 2003-05-01 Bailey Michael L. Micro fluidic interconnect port system
CA2561508C (en) * 2004-04-02 2013-03-19 Eksigent Technologies Llc Microfluidic connections
EP1957794B1 (en) * 2005-11-23 2014-07-02 Eksigent Technologies, LLC Electrokinetic pump designs and drug delivery systems
US7867592B2 (en) 2007-01-30 2011-01-11 Eksigent Technologies, Inc. Methods, compositions and devices, including electroosmotic pumps, comprising coated porous surfaces
ES2687620T3 (en) 2007-05-04 2018-10-26 Opko Diagnostics, Llc Device and method for analysis in microfluidic systems
WO2009076134A1 (en) * 2007-12-11 2009-06-18 Eksigent Technologies, Llc Electrokinetic pump with fixed stroke volume
JP5128325B2 (en) * 2008-03-11 2013-01-23 中興化成工業株式会社 Piping seal structure
FR2930457B1 (en) * 2008-04-24 2010-06-25 Commissariat Energie Atomique PROCESS FOR MANUFACTURING RECONFIGURABLE MICROCHANNELS
JP5314948B2 (en) * 2008-06-30 2013-10-16 ヤマハ発動機株式会社 Flare piping connection method
DE102008059897B4 (en) * 2008-12-02 2010-09-16 Dionex Softron Gmbh Plug unit and connection system for connecting capillaries, in particular for high performance liquid chromatography
TR201815133T4 (en) 2009-02-02 2018-11-21 Opko Diagnostics Llc Structures for controlling light interaction with microfilidic devices.
US20100199750A1 (en) * 2009-02-06 2010-08-12 Arnold Don W Microfludic Analysis System and Method
BR112014021776B1 (en) 2012-03-05 2022-08-09 Opko Diagnostics, Llc ASSAY SYSTEM AND METHOD FOR DETERMINING A PROBABILITY OF AN EVENT ASSOCIATED WITH PROSTATE CANCER
WO2016065334A1 (en) 2014-10-23 2016-04-28 Idex Health & Science Llc Face-sealing fluidic connection system
US9671048B2 (en) 2014-10-23 2017-06-06 Idex Health & Science Llc Manifold connection assembly
US11187360B2 (en) 2014-10-23 2021-11-30 Idex Health & Science Llc Fluidic connector assembly for quick connect/disconnect
CN112033807A (en) * 2020-09-03 2020-12-04 贵州大学 Device for assisting in applying non-uniform pore pressure field in rock test piece and test method

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US1087559A (en) * 1913-03-24 1914-02-17 Fulton Iron Works Pipe-coupling.
US1484295A (en) * 1924-02-19 Upset-tube fitting
US1862920A (en) * 1927-11-23 1932-06-14 Boynton Alexander Casing head
US1894700A (en) * 1931-03-17 1933-01-17 Parker Arthur La Rue Coupling and washer assembly
US2463196A (en) * 1945-05-15 1949-03-01 Parker Appliance Co Coupling for tubes
US3058761A (en) * 1958-07-02 1962-10-16 Aeroquip Corp Swivel joint having a resilient flange
US3122830A (en) * 1959-06-08 1964-03-03 Lockheed Aircraft Corp Method for forming an integral flange on a metal tube
US3436085A (en) * 1966-01-19 1969-04-01 Cleveland Technical Center Inc Sealing structure embodying deformable ring
US3823965A (en) * 1973-02-26 1974-07-16 J Emberson Pipe joint
US4538842A (en) * 1983-09-08 1985-09-03 Imperial Clevite Inc. High pressure, leakproof, blowout-proof tube fitting
US5806166A (en) * 1994-02-04 1998-09-15 Parker Hannifin Rak Sa Connecting device for an end of a rigid metallic pipe for conveying a fluid

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US514734A (en) * 1894-02-13 Pipe-coupling
US1484295A (en) * 1924-02-19 Upset-tube fitting
US1087559A (en) * 1913-03-24 1914-02-17 Fulton Iron Works Pipe-coupling.
US1862920A (en) * 1927-11-23 1932-06-14 Boynton Alexander Casing head
US1894700A (en) * 1931-03-17 1933-01-17 Parker Arthur La Rue Coupling and washer assembly
US2463196A (en) * 1945-05-15 1949-03-01 Parker Appliance Co Coupling for tubes
US3058761A (en) * 1958-07-02 1962-10-16 Aeroquip Corp Swivel joint having a resilient flange
US3122830A (en) * 1959-06-08 1964-03-03 Lockheed Aircraft Corp Method for forming an integral flange on a metal tube
US3436085A (en) * 1966-01-19 1969-04-01 Cleveland Technical Center Inc Sealing structure embodying deformable ring
US3823965A (en) * 1973-02-26 1974-07-16 J Emberson Pipe joint
US4538842A (en) * 1983-09-08 1985-09-03 Imperial Clevite Inc. High pressure, leakproof, blowout-proof tube fitting
US5806166A (en) * 1994-02-04 1998-09-15 Parker Hannifin Rak Sa Connecting device for an end of a rigid metallic pipe for conveying a fluid

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Publication number Priority date Publication date Assignee Title
US9409169B2 (en) 2011-04-08 2016-08-09 Commissariat A L'energie Atomique Et Aux Energies Alternatives Microfluidic card connection device

Also Published As

Publication number Publication date
DE60102982D1 (en) 2004-06-03
EP1170542A1 (en) 2002-01-09
JP4837843B2 (en) 2011-12-14
EP1170542B1 (en) 2004-04-28
US20020043805A1 (en) 2002-04-18
JP2002039439A (en) 2002-02-06
FR2811403B1 (en) 2002-08-16
US20050035598A1 (en) 2005-02-17
DE60102982T2 (en) 2005-05-04
FR2811403A1 (en) 2002-01-11
US7513535B2 (en) 2009-04-07

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Legal Events

Date Code Title Description
AS Assignment

Owner name: COMMISSARIAT A L'ENERGIE ATOMIQUE, FRANCE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CHARLES, RAYMOND;FOUILLET, YVES;REEL/FRAME:014141/0849

Effective date: 20011009

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION