EP3848660A1 - Dichter anschluss eines verbindungsstücks an einen koaxialen röhrenwärmetauscher - Google Patents

Dichter anschluss eines verbindungsstücks an einen koaxialen röhrenwärmetauscher Download PDF

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Publication number
EP3848660A1
EP3848660A1 EP20217470.2A EP20217470A EP3848660A1 EP 3848660 A1 EP3848660 A1 EP 3848660A1 EP 20217470 A EP20217470 A EP 20217470A EP 3848660 A1 EP3848660 A1 EP 3848660A1
Authority
EP
European Patent Office
Prior art keywords
connector
tubes
tube
internal
free end
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.)
Pending
Application number
EP20217470.2A
Other languages
English (en)
French (fr)
Inventor
Bérenger DIEUMEGARD
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.)
Hutchinson SA
Original Assignee
Hutchinson SA
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 Hutchinson SA filed Critical Hutchinson SA
Publication of EP3848660A1 publication Critical patent/EP3848660A1/de
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/106—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F11/00—Arrangements for sealing leaky tubes and conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • F28F9/0248—Arrangements for sealing connectors to header boxes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • F28F9/0251—Massive connectors, e.g. blocks; Plate-like connectors
    • F28F9/0253—Massive connectors, e.g. blocks; Plate-like connectors with multiple channels, e.g. with combined inflow and outflow channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • F28F9/0256—Arrangements for coupling connectors with flow lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/02—Fastening; Joining by using bonding materials; by embedding elements in particular materials
    • F28F2275/025—Fastening; Joining by using bonding materials; by embedding elements in particular materials by using adhesives
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/04—Fastening; Joining by brazing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/06—Fastening; Joining by welding

Definitions

  • the present invention relates in particular to a method for sealing a connector to a heat exchanger of the coaxial tubular type, as well as to a fluid connection device, in particular for an air conditioning circuit of a vehicle.
  • this coaxial exchanger generally defines at least one radially internal channel delimited by a sleeve and intended to convey the fluid coming from the high pressure portion of the circuit, and at least one radially external channel between the sleeve and the casing. of the exchanger and intended to convey the fluid coming from the low pressure portion of the circuit.
  • the sleeve and the casing are formed in one piece and connected together by longitudinal fins distributed over the circumference of the exchanger.
  • a major drawback of these internal coaxial exchangers equipped with female connectors lies in the mutual proximity of the weld or solder lines generated which, in particular for successive solders, generate risks of reflow of the previous solder, and also in the need to achieve these blind welds or solders with the risk of non-sealing at the junction and / or of penetration of the solder into the corresponding internal or external channel which can therefore lead to pressure drops, pollution or even blockage of these channels.
  • An aim of the present invention is to provide an alternative to this solution.
  • the inner tube is then inserted in step c) into the outer tube, until the inner tube cooperates in sealing with the connector.
  • This is generally a blind edit. Strictly speaking, there is no securing of the inner tube directly to the connector. They are simply engaged in each other or on top of each other.
  • the inner tube is secured indirectly with respect to the connector, via the outer tube. This joining of the tubes is carried out in step d) and makes it possible to prevent any relative movement between the tubes in operation.
  • the securing of the inner and outer tubes is obtained by crimping the outer tube on the inner tube, the simultaneous bending of the inner and outer tubes, or the welding of the ends of the inner and outer tubes opposite the connector.
  • the figures 1 to 6 illustrate an embodiment of a fluidic connection device 10 according to the invention, for an air conditioning circuit of a vehicle, in particular an automobile.
  • the exchanger 14 has a generally elongated shape and comprises two coaxial tubes extending one inside the other.
  • the inner tube is referenced 14a and the outer tube is referenced 14b.
  • the outer tube 14b defines around the inner tube 14a an annular channel C1 for the circulation of a first fluid, and the inner tube 14a defines a second internal channel C2 for the circulation of a second fluid ( figure 3 ).
  • one of the tubes generally has protrusions, such as fins, resting on the other of the tubes to keep them away from one another. other.
  • the fins can extend parallel to the longitudinal axis X of the exchanger 14 or helically around this axis. They can be continuous or discontinuous.
  • the outer tube 14b can comprise on its inner cylindrical surface surrounding the inner tube 14a internal fins 15 which bear on an outer cylindrical surface of the inner tube 14a ( figure 3 ).
  • the internal tube 14a can comprise on its external cylindrical surface surrounded by the external tube 14b external fins which bear on an internal cylindrical surface of the external tube 14b.
  • the tubes 14a, 14b can be of identical or different materials. They can be made of metal alloy (s) or plastic material (s) for example.
  • the connector 12 is located at a longitudinal end of the exchanger 14, the opposite longitudinal end of which is connected to another type of connector 16, which does not form part of the invention.
  • the exchanger 14 has a straight shape.
  • the exchanger 14 has a shape having several bends.
  • the exchanger 14 of the figure 2 has undergone a forming or shaping or bending step, starting from the initial shape of the figure 1 .
  • this shaping can make it possible to secure the tubes 14a, 14b together, in particular in the zones where the tubes are simultaneously bent and plastically deformed by being clamped against one another.
  • Device 10 of the figure 2 is ready for installation in an air conditioning circuit and for use.
  • the figure 4 is a view on a larger scale of the connector 12 and of its connection to one end of the exchanger 14.
  • the connector 12 is shown alone on the figure 5 .
  • the outer tube 14b has a straight cut end (in a plane perpendicular to the longitudinal axis X of the exchanger 14) forming a free end 14b1, this free end 14b1 being engaged in a housing 18 of the connector 12.
  • the inner tube 14a has a free end 14a1 which is preferably formed integrally with the rest of the tube but which may alternatively be formed by attaching and securing a tubular member 20 to one end 14a2 of the tube 14a.
  • This free end 14a1 or this member 20 is shown alone at the figure 6 .
  • the end 14a or the member 20 has undergone a forming or shaping operation. Before this operation, he / she includes internal and external cylindrical surfaces and constant internal and external diameters. After this operation and as illustrated, he / she has a flared portion 20a connecting to the rest of the inner tube 14a.
  • the edge-to-edge connection of the member 20 at the end 14b1 of the tube 14a, as illustrated in figure 4 can be carried out by welding or brazing for example.
  • This portion 20a has internal D1 and external D2 diameters substantially identical to those of the internal tube 14a.
  • the end 14a1 or the member 20 comprises two adjacent grooves 22 and therefore carries two seals 24 ( figure 4 ).
  • the seals 24 are preferably made of elastomer. As a variant, they could be made of metal.
  • the connector 12 has a general parallelepipedal shape and comprises an upper face 12a, a lower face 12b, and side faces 12c.
  • the ports 30, 32 are substantially parallel to each other and perpendicular to the port 28 and to the axis of the bore 34 which is intended to coincide with the X axis of the exchanger 14.
  • the bore 34 is stepped and therefore comprises several successive stages of different diameters and formed in particular by the housings 18, 26 and the cavities 36, 38.
  • the bore 24 firstly comprises the housing 18 which is connected to the port 28 and to the face 12c by a first chamfer 42.
  • This housing 18 has an external diameter D4.
  • the bore 24 then comprises the cavity 36 which extends between the housing 18 and a chamfer 44 for connecting to the other housing 26.
  • the cavity 36 has a diameter external D5 and the housing 26 has an external diameter D6, D5 being between D4 and D6.
  • the housing 18 is connected to the cavity 36 by a cylindrical seat 46.
  • the bore 34 finally comprises the cavity 38 which is connected to the housing 26 by another cylindrical bearing surface 48 and which ends in a blind hole 50 in the vicinity of the face 12c opposite the port 28.
  • the cavity 38 has an external diameter D7, less than D6.
  • D4 is substantially the same or slightly greater than the outer diameter Dext of the free end 14b1 of the outer tube 14b ( figure 4 ).
  • D6 is substantially the same or slightly greater than the external diameter D3 of the end 20b of the member 20 or of the free end 14a1 of the internal tube 14a.
  • the method comprises a first step a) in which the free end 14b1 of the outer tube 14b is engaged in the housing 18 of the connector 12.
  • the insertion of the end 14b1 into the port 28 is facilitated by the chamfer 42, and continued. up to the stop on the bearing surface 46.
  • the outer tube 14b forms a male part engaged in the housing 18 forming a female part.
  • the free end 14b1 then forming a female part engaged on a male portion of the connector 12. This engagement can be performed manually by an operator.
  • the method comprises a following step b) of direct joining of the outer tube 14b to the connector 12.
  • this joining can be carried out by welding, for example of the TIG type, an annular bead of weld 52 then being formed at the port 28 and the chamfer 42, around the outer tube 14b ( figure 4 ).
  • the brazing could be almost invisible to the naked eye and for example essentially located inside the housing 18.
  • the tube 14b and the connector 12 are made of plastic or composite material, their joining could be ensured by gluing, electron beam welding, etc.
  • step b the outer tube 14b is fixed to the connector 12 and the inner tube 14a is not yet present in the device 10.
  • the channel C1 is then in fluid communication with the port 30 via the cavity 36.
  • the inner tube 14a is mounted in the following step c).
  • the inner tube 14a is inserted into the outer tube 14b until the free end 14a1 of the inner tube engages the housing 26 of the connector 12.
  • the insertion of the end 14a1 into the housing 26 is facilitated by the chamfer 44 and continued up to the stop on the bearing surface 48.
  • the internal tube 14a also forms a male part engaged in the housing 26 forming a female part.
  • the free end 14a1 then forming a female part engaged on a male portion of the connector 12. This engagement can be carried out manually by an operator. It will be understood that, insofar as the tubes are relatively rigid, these tubes are preferably straight to facilitate step c).
  • the mounting of the inner tube 14a in the connector 12 is such that it alone provides a seal between the inner tube and the connector. It is therefore not necessary to provide a direct connection between these elements.
  • This sealing can be ensured by a simple cooperation of shapes or a simple support of complementary cylindrical surfaces between the internal tube 14a and the connector 12.
  • the seal is provided by gaskets 24, the number and material of which can be adapted, as mentioned in the foregoing.
  • Channel C2 is then in fluid communication with port 32 via cavity 38.
  • the method comprises two additional optional steps, between steps b) and c), which consist on the one hand in shaping the free end 14a1 of the internal tube 14a, or indeed a member 20 which is then attached to the end of the tube, then to mount the seals 24 in the grooves 22 of this free end 14a1.
  • the method finally comprises a step d) in which the tubes 14a, 14b are secured together to avoid relative movements between them.
  • This joining can be achieved by shaping the exchanger 14, and in particular its bending, as mentioned in the above in relation to the figure 2 .
  • the tubes 14a, 14b are then plastically deformed and held tight against one another, thus preventing any relative movement between them.
  • the joining can be achieved by plastic deformation of only one of the tubes, and for example the outer tube 14b which is crimped on the inner tube 14a in a specific location E (cf. figure 8 ).
  • the crimping results in indentations 54 and localized plastic deformations of the outer tube 14b to bear on the inner tube 14a.
  • This joining can also be carried out by welding together the ends of the tubes 14a, 14b, opposite the connector 12 and therefore located on the side of the other connector 16.
  • the invention makes it possible to achieve a sealed fluid connection between the exchanger 14 and the connector 12, without blind welding while limiting the size of the device 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Motor Or Generator Frames (AREA)
EP20217470.2A 2020-01-09 2020-12-29 Dichter anschluss eines verbindungsstücks an einen koaxialen röhrenwärmetauscher Pending EP3848660A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR2000143A FR3106201B1 (fr) 2020-01-09 2020-01-09 Raccordement etanche d’un connecteur a un echangeur thermique tubulaire coaxial

Publications (1)

Publication Number Publication Date
EP3848660A1 true EP3848660A1 (de) 2021-07-14

Family

ID=69811389

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20217470.2A Pending EP3848660A1 (de) 2020-01-09 2020-12-29 Dichter anschluss eines verbindungsstücks an einen koaxialen röhrenwärmetauscher

Country Status (4)

Country Link
US (1) US11365939B2 (de)
EP (1) EP3848660A1 (de)
CN (1) CN113108639A (de)
FR (1) FR3106201B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024168425A1 (en) * 2023-02-17 2024-08-22 Solex Thermal Science Inc. Heat exchanger for heating or cooling bulk solids

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2085574A (en) * 1980-10-10 1982-04-28 Sueddeutsche Kuehler Behr Double pipe cooler
EP0276521A1 (de) * 1986-12-30 1988-08-03 W. Schmidt GmbH & Co. KG Wärmeaustauscher
EP1128120A2 (de) 2000-02-24 2001-08-29 Calsonic Kansei Corporation Verbindung für Doppelwandröhren, Verfahren zum Hartlöten der Verbindung an Doppelwandröhren, und Klimaanlage für Fahrzeuge
WO2007013439A1 (ja) 2005-07-28 2007-02-01 Showa Denko K.K. 熱交換器
EP1762806A1 (de) 2005-09-12 2007-03-14 Behr GmbH & Co. KG Anschlussanordnung, insbesondere für einen Wärmetauscher
US20090260586A1 (en) * 2006-09-19 2009-10-22 Behr Gmbh & Co. Kg Heat exchanger for an internal combustion engine
EP2199721A1 (de) 2008-12-17 2010-06-23 Hutchinson Interner Wärmetauscher für einen Klimaanlagenschaltkreis eines Kraftfahrzeugs, entsprechender Schaltkreis und entsprechendes Anschlussverfahren eines Anschlusses an diesen Wärmetauscher
WO2011057594A1 (de) * 2009-11-11 2011-05-19 Az Vermögensverwaltung Gmbh & Co. Kg Rohr-in-rohr-wärmetauscher
WO2019050258A1 (en) * 2017-09-06 2019-03-14 Contitech Fluid Korea Ltd. DOUBLE TUBE FOR HEAT EXCHANGE

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6550815B2 (en) * 2001-08-14 2003-04-22 Itt Manufacturing Enterprises, Inc. Coaxial quick connector
DE202007015036U1 (de) * 2007-10-26 2009-03-12 Voss Automotive Gmbh Leitungsverbinder sowie Leitungssatz für fluidische Medien
KR101166806B1 (ko) * 2010-03-05 2012-07-31 주식회사 화승알앤에이 이중관 및 이를 구비한 열교환기
DE102013106217A1 (de) * 2013-06-14 2014-12-18 Voss Automotive Gmbh Leitungsverbinder sowie Leitungssatz für fluidische Medien
EP3303965B1 (de) * 2015-05-28 2023-12-27 Dometic Sweden AB Korrosionsbeständige koaxiale wärmetauscheranordnung

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2085574A (en) * 1980-10-10 1982-04-28 Sueddeutsche Kuehler Behr Double pipe cooler
EP0276521A1 (de) * 1986-12-30 1988-08-03 W. Schmidt GmbH & Co. KG Wärmeaustauscher
EP1128120A2 (de) 2000-02-24 2001-08-29 Calsonic Kansei Corporation Verbindung für Doppelwandröhren, Verfahren zum Hartlöten der Verbindung an Doppelwandröhren, und Klimaanlage für Fahrzeuge
WO2007013439A1 (ja) 2005-07-28 2007-02-01 Showa Denko K.K. 熱交換器
EP1762806A1 (de) 2005-09-12 2007-03-14 Behr GmbH & Co. KG Anschlussanordnung, insbesondere für einen Wärmetauscher
US20090260586A1 (en) * 2006-09-19 2009-10-22 Behr Gmbh & Co. Kg Heat exchanger for an internal combustion engine
EP2199721A1 (de) 2008-12-17 2010-06-23 Hutchinson Interner Wärmetauscher für einen Klimaanlagenschaltkreis eines Kraftfahrzeugs, entsprechender Schaltkreis und entsprechendes Anschlussverfahren eines Anschlusses an diesen Wärmetauscher
WO2011057594A1 (de) * 2009-11-11 2011-05-19 Az Vermögensverwaltung Gmbh & Co. Kg Rohr-in-rohr-wärmetauscher
WO2019050258A1 (en) * 2017-09-06 2019-03-14 Contitech Fluid Korea Ltd. DOUBLE TUBE FOR HEAT EXCHANGE

Also Published As

Publication number Publication date
CN113108639A (zh) 2021-07-13
FR3106201B1 (fr) 2022-11-11
FR3106201A1 (fr) 2021-07-16
US11365939B2 (en) 2022-06-21
US20210215429A1 (en) 2021-07-15

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