WO2008077013A2 - Joint de connecteur de climatisation - Google Patents

Joint de connecteur de climatisation Download PDF

Info

Publication number
WO2008077013A2
WO2008077013A2 PCT/US2007/087879 US2007087879W WO2008077013A2 WO 2008077013 A2 WO2008077013 A2 WO 2008077013A2 US 2007087879 W US2007087879 W US 2007087879W WO 2008077013 A2 WO2008077013 A2 WO 2008077013A2
Authority
WO
WIPO (PCT)
Prior art keywords
seal
tube
carrier
male
fitting
Prior art date
Application number
PCT/US2007/087879
Other languages
English (en)
Other versions
WO2008077013A3 (fr
Inventor
Robert J. Dubiel
Frank M. Levanduski
William V. Blevins, Jr.
Nikhil Baxi
Original Assignee
Parker-Hannifin Corporation
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 Parker-Hannifin Corporation filed Critical Parker-Hannifin Corporation
Publication of WO2008077013A2 publication Critical patent/WO2008077013A2/fr
Publication of WO2008077013A3 publication Critical patent/WO2008077013A3/fr

Links

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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L21/00—Joints with sleeve or socket
    • F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
    • 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
    • F16L21/00—Joints with sleeve or socket
    • F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
    • F16L21/04—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings in which sealing rings are compressed by axially-movable members
    • 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
    • F16L23/00—Flanged joints
    • F16L23/02—Flanged joints the flanges being connected by members tensioned axially
    • 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
    • F16L23/00—Flanged joints
    • F16L23/02—Flanged joints the flanges being connected by members tensioned axially
    • F16L23/024—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
    • F16L23/028—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes the flanges being held against a shoulder
    • F16L23/0283—Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes the flanges being held against a shoulder the collar being integral with the 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L23/00—Flanged joints
    • F16L23/02—Flanged joints the flanges being connected by members tensioned axially
    • F16L23/032—Flanged joints the flanges being connected by members tensioned axially characterised by the shape or composition of the flanges

Definitions

  • the present invention relates generally to fluid fittings. More particularly, the invention relates to fittings for connecting conduits that carry refrigerant material in an automobile air conditioning system.
  • FIG. 1 A two-piece seal fitting generally indicated by reference numeral 2 in Fig. 1.
  • This fitting 2 includes a male block 10 through which a male tube 12 extends.
  • the male tube 12 has an annular recess 13 formed therein in which an O-ring 14 is retained.
  • a female tube 16 is configured to be telescoped over the end of the male tube 12.
  • An axial seal member 18 supported by the male block seals the axial end face (flange) of the female tube 16 while the O- ring 12 radially seals the male tube 12 and female tube 16.
  • a female block 20 engages a flange on female tube 16 and prevents withdrawal of the female tube 16 from the fitting 2.
  • the male and female blocks are secured together with bolt 22 and nut 24 n position against the male block 10.
  • the end of the male tube 12 is press fit through the block 10, such as by tapping or pounding the end of the tube 12.
  • the annular groove 13 is formed in the male tube 12 into which the O-ring 14 is installed.
  • the female tube 16 then is telescoped over the male tube 12.
  • female block 20 is secured to male block 10 with bolt 22, which is first threaded into female tube 16, and nut 24.
  • connection 2 of Fig. 1 is suitable for some applications, it will be appreciated that the several steps involved in forming the connection (e.g., press-fitting the male tube, forming the annular groove, etc.) during assembly of an air conditioning system can be tedious and time consuming.
  • a fitting that is easily assembled and does not require forming an annular groove in the male tube.
  • a fitting is provided having a one-piece seal that radially seals both the male and female tubes and axially seals the female tube.
  • a fitting is provided having a body with a seal element bonded to the body and surrounding at least a portion of a bore through the body. The seal is configured to seal both radially and axially. Assembly of the fittings is simplified by the one-piece seal designs and the elimination of the need to roll form an annular retention groove in the male tube.
  • a seal for a fitting assembly used to connect a male tube to a female tube in a refrigeration system comprises a carrier and a seal element supported by the carrier.
  • the seal element includes a tubular portion extending axially from an opening in the carrier through which a male tube can be inserted.
  • the tubular portion has a radially outwardly protruding sealing bead on an outer surface thereof spaced apart axially from the carrier whereby when the tubular portion is positioned between the male tube and a mating female tube, the radially outwardly protruding sealing bead seals an inner diameter of the female tube.
  • the tubular portion of the seal element can be generally cylindrical and configured such that a female tube can be telescoped over the tubular portion.
  • the seal element can include an outer annular axial seal portion extending radially outward from the tubular portion for sealing an axial end face of the female tube when telescoped over the tubular portion of the seal element.
  • the seal element can also include an inner annular axial seal portion extending radially inward from the tubular portion and spaced axially from the carrier for sealing an axial end face of the male tube when inserted into the tubular portion of the seal element.
  • the carrier can have an annular support flange projecting from the carrier surrounding the opening for providing radial support to of a proximal portion the seal element.
  • the tubular portion can also include first and second axially spaced-apart radial seal beads on radially inner and/or outer surfaces thereof.
  • the carrier can be made of a thermoplastic material with the seal element being overmolded thereon.
  • the seal can be included in a fitting assembly comprising first and second fitting block halves, a male tube and a female tube.
  • the male tube is supported by the first fitting block half and extends through a bore in the first fitting block half such that an end of the male tube protrudes from the bore.
  • the male tube also has a radially outward protruding bead spaced axially from the protruding end of the tube trapped in a counterbore of the first fitting half preventing withdrawal of the male tube from the fitting assembly.
  • the female tube is telescoped over the protruding end of the male tube, and is supported by the second fitting block half which is secured to the first fitting block half with a fastener.
  • An end of the female tube extends through a bore in the second fitting block half and has thereon a radially outward protruding flange trapped in a counterbore of the second fitting block half preventing withdrawal of the female tube from the fitting assembly.
  • the seal is radially interposed between the male and female tube for radially sealing an outside diameter of the male tube to an inside diameter of the female tube.
  • a seal for a fitting assembly used to connect a male tube to a female tube in a refrigeration system comprises a carrier and a seal element supported by the carrier.
  • the seal element includes a tubular portion extending axially from an opening in the carrier through which a male tube can be inserted, the tubular portion having concentric radially outer and inner surfaces.
  • the carrier has an annular support flange projecting from the carrier surrounding the opening for providing radial support to a proximal portion of the seal element.
  • the carrier can be made of a thermoplastic material, and the seal element can be an elastomeric material overmolded on the carrier.
  • the seal element can have an outer annular axial seal portion extending radially outward from the tubular portion for sealing an axial end face of the female tube.
  • the seal element can also or alternatively have an inner annular axial seal portion extending radially inward from the tubular portion and spaced apart axially from the carrier for sealing an axial end face of the male tube.
  • a fitting block for a fitting assembly used to connect lines of a refrigeration system comprises a body having a bore extending therethrough, and a seal element bonded to the body and surrounding at least a portion of the bore, the seal element having a radially inner seal portion for sealing a circumferential surface of a first tube, and an axial seal portion for sealing an axial end face of a second tube.
  • the body can be made of a thermoplastic material, and the seal element can be overmolded on the body.
  • the seal element can be located in a counterbore in the block.
  • Fig. 1 is an assembly view of a conventional fitting.
  • Fig. 2 is a cross-sectional view of an exemplary seal in accordance with the invention.
  • Fig. 3 is a top view of the seal of Fig. 2.
  • Fig. 4 is a cross-sectional view of a partially assembled exemplary fitting in accordance with the invention including the seal of Figs. 2 and 3.
  • Fig. 5 is cross-sectional view of the fitting of Fig. 5 assembled.
  • Fig. 6 is a cross-sectional view of another exemplary seal in accordance with the invention.
  • Fig. 7 is a cross-sectional view of another exemplary fitting in accordance with the invention.
  • a seal 30 in accordance with the invention is illustrated.
  • the seal 30 is used in a fitting for sealing a joint between a male and female tube.
  • the seal 30 includes a carrier 32 and an overmolded elastomeric seal element 34.
  • the carrier 32 which can be thermoplastic, includes a mount hole through which a fastener, such as a bolt, can extend for securing the seal within the fitting, as will be described.
  • An annular support flange 36 projects from the carrier 32 and surrounds an opening 38 in the carrier 32 through which a tube can extend.
  • the annular support flange 36 is generally provided to support the elastomeric seal element 34 and can also serve as an interlock structure for interlocking with overmolded seal element.
  • the elastomeric seal element 34 which can be a rubber seal, surrounds opening 38 in the carrier 32 and includes a generally tubular portion that is configured to receive an end of a male tube therein.
  • a radially inwardly extending shoulder 40 limits the extent to which the male tube can be inserted into the seal element 34 and is configured to seal an axial end face of the male tube when inserted therein.
  • a pair of seal beads 42 on the inner surface the seal element 34 are provided for sealing against a radially outer surface of the male tube when inserted therein.
  • the seal element 34 is also configured such that a female tube can be telescoped over the tubular portion.
  • a pair of radial seal beads 44 on the outer surface of the seal element 34 are provided for sealing against a radially inner surface of the female tube when telescoped over the seal element 34.
  • An axial seal bead 46 is provided for sealing an axial end face of the female tube when telescoped over the seal element 34.
  • male tube 52 is inserted into the tubular portion of the seal 30, while the female tube 54 is telescoped over the tubular portion of the seal 30.
  • the annular support flange 36 of the carrier 32 generally supports the tubular portion during the telescoping of the female tube 54 to prevent deformation of the seal element 34.
  • the male tube 52 and female tube 54 are secured relative to each other via the male and female blocks 56 and 58, which each engage a shoulder on a respective tube.
  • Bolt 60 and nut 62 are then tightened to secure the fitting 50 and thereby ensure a tight sealing joint between male tube 52 and female tube 54.
  • the fitting 50 in Figs. 4 and 5 which does not have a separate O-ring as in the conventional fitting of Fig. 1 , does not require the extra steps of roll forming a groove in the male tube 52 and installing an O- ring therein. Further, the fitting 50 effectively reduces the number of parts as compared to the fitting of Fig. 1. Accordingly, assembly of the fitting 50 can be more efficient.
  • the annular support flange 36 of the carrier 32 is generally provided for supporting the seal element 34 when the female tube 54 is telescoped over the tubular portion.
  • Such support can be desired particularly when friction and/or interference between the female tube 54 and the seal element 34 would otherwise cause the tubular portion to collapse or otherwise deform thereby preventing proper installation of the fitting 50.
  • a seal 30 is illustrated without the annular support flange 36.
  • the seal element 34 of the seal is composed of a material having sufficiently low friction such that the female tube 54 can be installed (e.g., telescoped) over the seal 30 without the tubular portion of the seal member 34 collapsing or otherwise deforming in an unfavorable manner.
  • certain lubricating fillers can be included in the seal compound to achieve a seal material having a suitable friction coefficient.
  • the seal 30 of Fig. 6 is otherwise identical to the seal 30 shown in Figs. 2-5, and is used in the fitting 50 in the same manner.
  • Fig. 7 another exemplary fitting in accordance with the invention is illustrated.
  • the fitting 70 includes a male seal block 72 and female block 74 for connecting male tube 52 to female tube 54.
  • the seal (or seals) is formed as part of male seal block 72 and, as such, the assembly of a separate seal element is avoided.
  • Male seal block 72 has a thermoplastic body (carrier) 76 with an opening 78 through which male tube 52 is press fit.
  • the male tube is secured to the male seal block by interference, although a retention bead and retainer plate could also be provided.
  • a resilient seal material is overmolded or otherwise bonded in an inner counterbore 80 surrounding the opening 78 thereby forming seal element 82.
  • Seal element 80 has a radially inner side having a pair of radial seal beads 84 configured to seal radially against the outer diameter of the male tube 52.
  • An axial seal bead 86 is configured to seal against an axial end face of the female tube, which in the illustrated embodiment is a radially outwardly extending flange 88.
  • Male seal block 72 also has an outer counterbore 90 in which resilient seal material is overmolded or otherwise bonded to provide a secondary seal element 92.
  • the secondary seal element 92 has an undercut region 94 in which a kink 96 on the male tube 52 resides when the male tube 52 is fully inserted into the male seal block 72.
  • the secondary seal material adjacent the undercut region 92 generally operates to retain the male tube 52 in the male seal block 72 during assembly.
  • male tube 52 is press fit through bore 78 in the seal block 72. This can be done by, for example, pounding an end of male tube 52. As mentioned, the interference between the male tube 52 and male seal block 72 generally secures the male tube in the fitting 70. An additional retainer plate (not shown) could also be provided for securing male tube 52 to the seal block 72. As will be appreciated, the end of the male tube 52 protrudes from the male seal block 72 when fully inserted therein.
  • Female tube 54 is telescoped over the protruding end of the male tube 52 such that flange 88 of the female tube engages the seal element 82. Flange 88 is captured in counterbore 97 in female block 74 thereby preventing removal of the female tube 54 from the fitting 70.
  • Bolt 98 and nut 99 are used to secure the male seal block 72 and female block 74 together.
  • the seal element is formed as part of the male seal block 72, no separate assembly of the seal is needed.
  • this embodiment both eliminates the need to roll form a groove in the male tube 52 and the need to separately handle a seal member.
  • the fitting 70 can be more quickly and easily installed.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Abstract

L'invention concerne une pièce de fixation pour raccorder un tube mâle et un tube femelle. Selon un aspect, il est proposé une pièce de fixation ayant un joint à une pièce qui scelle radialement à la fois les tubes mâle et femelle et scelle axialement le tube femelle. Selon un autre aspect, il est proposé une pièce de fixation ayant un corps avec un élément de joint lié au corps et entourant au moins une partie d'un alésage à travers le corps. Le joint est configuré pour un scellage à la fois de manière radiale et axiale. L'assemblage des pièces de fixation est simplifié par des éléments de joint à une pièce et l'élimination de la nécessité de former aux rouleaux une rainure de rétention annulaire dans le tube mâle.
PCT/US2007/087879 2006-12-18 2007-12-18 Joint de connecteur de climatisation WO2008077013A2 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US87045006P 2006-12-18 2006-12-18
US60/870,450 2006-12-18
US95440507P 2007-08-07 2007-08-07
US60/954,405 2007-08-07

Publications (2)

Publication Number Publication Date
WO2008077013A2 true WO2008077013A2 (fr) 2008-06-26
WO2008077013A3 WO2008077013A3 (fr) 2008-08-28

Family

ID=39247343

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/087879 WO2008077013A2 (fr) 2006-12-18 2007-12-18 Joint de connecteur de climatisation

Country Status (1)

Country Link
WO (1) WO2008077013A2 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012101364A1 (de) * 2012-02-21 2013-08-22 Roth & Rau Ag Vakuumdurchführung
WO2014138077A1 (fr) * 2013-03-08 2014-09-12 Paccar Inc Raccord à positions multiples
CN106907538A (zh) * 2017-04-06 2017-06-30 珠海格力电器股份有限公司 管接头装置及汽车空调器
DE102017211635A1 (de) * 2016-07-08 2018-01-11 Hanon Systems Kunststoffdichtungsfitting
CN109812632A (zh) * 2018-12-12 2019-05-28 杜昌桂 自然型法兰密封的技艺
WO2023144587A1 (fr) * 2022-01-28 2023-08-03 Ti Group Automotive Systems, Llc Dispositif et procédé d'agencement de raccordement pour conduite de fluide

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE644601C (de) * 1935-01-24 1937-05-08 Buderus Eisenwerk Muffenrohrverbindung mit buchsenartigem Dichtungskoerper
US3325174A (en) * 1964-11-16 1967-06-13 Woodward Iron Company Pipe joint packing
GB2022727A (en) * 1978-06-03 1979-12-19 Bayerische Motoren Werke Ag Fuel injection nozzle fastening
WO1997016670A1 (fr) * 1995-10-30 1997-05-09 Manuli Auto France Joint d'etancheite composite, et ensemble comportant un tel joint
US20040140625A1 (en) * 2003-01-16 2004-07-22 Valls Jose E. Socket with dual-functional composite gasket
FR2873782A1 (fr) * 2004-07-30 2006-02-03 Manuli Auto France Sa Raccord etanche a double joints et bague de protection

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE644601C (de) * 1935-01-24 1937-05-08 Buderus Eisenwerk Muffenrohrverbindung mit buchsenartigem Dichtungskoerper
US3325174A (en) * 1964-11-16 1967-06-13 Woodward Iron Company Pipe joint packing
GB2022727A (en) * 1978-06-03 1979-12-19 Bayerische Motoren Werke Ag Fuel injection nozzle fastening
WO1997016670A1 (fr) * 1995-10-30 1997-05-09 Manuli Auto France Joint d'etancheite composite, et ensemble comportant un tel joint
US20040140625A1 (en) * 2003-01-16 2004-07-22 Valls Jose E. Socket with dual-functional composite gasket
FR2873782A1 (fr) * 2004-07-30 2006-02-03 Manuli Auto France Sa Raccord etanche a double joints et bague de protection

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012101364A1 (de) * 2012-02-21 2013-08-22 Roth & Rau Ag Vakuumdurchführung
WO2014138077A1 (fr) * 2013-03-08 2014-09-12 Paccar Inc Raccord à positions multiples
DE102017211635A1 (de) * 2016-07-08 2018-01-11 Hanon Systems Kunststoffdichtungsfitting
US10378686B2 (en) 2016-07-08 2019-08-13 Hanon Systems Plastic seal fitting
CN106907538A (zh) * 2017-04-06 2017-06-30 珠海格力电器股份有限公司 管接头装置及汽车空调器
CN109812632A (zh) * 2018-12-12 2019-05-28 杜昌桂 自然型法兰密封的技艺
WO2023144587A1 (fr) * 2022-01-28 2023-08-03 Ti Group Automotive Systems, Llc Dispositif et procédé d'agencement de raccordement pour conduite de fluide

Also Published As

Publication number Publication date
WO2008077013A3 (fr) 2008-08-28

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