EP1054227A2 - Assemblage d'un raccord de tuyau et d'un réservoir et méthode d'assemblage - Google Patents

Assemblage d'un raccord de tuyau et d'un réservoir et méthode d'assemblage Download PDF

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Publication number
EP1054227A2
EP1054227A2 EP00303885A EP00303885A EP1054227A2 EP 1054227 A2 EP1054227 A2 EP 1054227A2 EP 00303885 A EP00303885 A EP 00303885A EP 00303885 A EP00303885 A EP 00303885A EP 1054227 A2 EP1054227 A2 EP 1054227A2
Authority
EP
European Patent Office
Prior art keywords
tank
hose connector
wall
stop
opening
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.)
Withdrawn
Application number
EP00303885A
Other languages
German (de)
English (en)
Other versions
EP1054227A3 (fr
Inventor
Carl Mcliheran
Bud Harford
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.)
Modine Manufacturing Co
Original Assignee
Modine Manufacturing Co
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 Modine Manufacturing Co filed Critical Modine Manufacturing Co
Publication of EP1054227A2 publication Critical patent/EP1054227A2/fr
Publication of EP1054227A3 publication Critical patent/EP1054227A3/fr
Withdrawn legal-status Critical Current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
    • F28F9/0246—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
    • F28F2275/00—Fastening; Joining
    • F28F2275/12—Fastening; Joining by methods involving deformation of the elements
    • F28F2275/122—Fastening; Joining by methods involving deformation of the elements by crimping, caulking or clinching

Definitions

  • the present invention relates to a hose connector and tank assembly and a method for assembling such an assembly, in particular, a hose connector and tank assembly and assembly method which limits improper insertion of the hose connector into the tank.
  • a first end of the hose connector is disposed into an opening in the tank.
  • the hose connector is secured to the tank with a tack weld, for example.
  • the hose connector-tank assembly which is conventionally made of aluminum, then undergoes a brazing process to form a sealed joint between the hose connector and the tank.
  • the hose connector may be inserted too far or not far enough into the opening in the tank during the assembly process. If the hose connector is inserted too far into the opening, the hose connector may obstruct the flow of the coolant within the tank and/or between the tank and the open ends of the tubes in a header to which the tank is fitted. If the hose connector is not inserted far enough into the tank, the joint between the hose connector and the tank may be weakened and/or not fluid tight.
  • a tank assembly for a heat exchanger includes a tank having a wall with an opening therethrough and adapted to be fitted to the header of a heat exchanger, and a hose connector having a first end and a stop disposed a predetermined distance from the first end greater than the thickness of the wall.
  • the stop abuts the wall with the first end of the hose connector disposed in the opening in the tank wall to prevent the hose connector from being disposed further into the opening.
  • the first end of the hose connector is deformed against the wall of the tank oppositely of the stop to prevent withdrawal of the hose connector from the tank.
  • the hose connector body includes a wall, and the wall may have a plurality of slits therethrough starting at the first end of the hose connector and extending no further than the stop.
  • the slits may extend no further than a distance equal to the predetermined distance from the first end of the hose connector less the thickness of the tank wall.
  • the hose connector may include a stepped wall defining a shoulder at the predetermined distance from the first end, the shoulder defining the stop. Also, the hose connector may include a wall deformed to define a rib at the predetermined distance from the first end, the rib defining the stop.
  • the stop and the first end may be brazed to the tank to form leak-tight joints therebetween.
  • a tank assembly for a heat exchanger includes a tank having a wall with an interior surface, an exterior surface, and an opening therethrough and adapted to be fitted to the header of a heat exchanger, and a hose connector having a first end and a stop disposed a predetermined distance from the first end greater than the thickness of the wall.
  • the stop abuts the exterior surface of the wall of the tank to prevent the hose connector from being disposed further into the opening.
  • the first end is disposed through the opening and is deformed against the interior surface of the wall of the tank to prevent the hose connector from being disposed further into the opening.
  • Braze alloy may be applied to the exterior and/or the interior surface of the tank. Braze alloy may be applied to the hose connector. The stop may be brazed to the exterior surface of the wall of the tank , and the first end may be brazed to the interior surface of the wall of the tank.
  • a method of positioning a hose connector relative to a tank for a heat exchanger includes providing a tank with a wall having an opening therethrough, and providing a hose connector with a first end and a stop disposed a predetermined distance greater than the thickness of the wall from the first end.
  • the first end of the hose connector is disposed into the opening in the tank wall, and the stop is abutted against the wall to position the first end relative to the tank.
  • the first end of the hose connector is deformed against the wall of the tank.
  • the method may include applying braze alloy to the tank and/or the hose connector.
  • the method may also include brazing the hose connector to the tank.
  • the step of deforming may include the step of flaring out the first end of the hose connector against the wall of the tank.
  • FIG. 1 A heat exchanger 20 is shown, with first and second tank assemblies 22, 24 and a plurality of tubes 26 extending therebetween and in fluid communication therewith. Fins 28 are disposed between the tubes 26.
  • Each of the first and second tank assemblies 22, 24 includes a header 30, 32 to which the tubes 26 are attached, and a tank 34, 36.
  • An first port 38 is provided to the tank 34, while a second port 40 is provided to the tank 36 to allow coolant to enter and exit the heat exchanger 20.
  • the ports 38, 40 are shown in Fig.
  • the ports 38, 40 may be in the same tank 34 or 36 so that the coolant flows through tubes 26 in an even number of passes.
  • the presence or absence of conventional baffles within the tank 34 and/or tank 36 will define the number of passes.
  • Each of the ports 38, 40 is defined by a hose connector 42, which is attached to the tanks 34, 36.
  • Figs. 2-3 show a first embodiment of the hose connector 42 according to the present invention.
  • the hose connector 42 has a tubular body 44 with a first end 46 and a second end 48.
  • the body 44 of the hose connector 42 is flattened in a section 50 adjacent to the first end 46 so that the latter is in the form of an oval.
  • the second end 48 is circular to receive a hose, and includes a peripheral radially outwardly directed hose retaining rib 52.
  • a hose (not shown) is fitted about the second end 48, and over the rib 52.
  • a hose clamp (not shown) is disposed about the hose between the end 46 and the rib 52 and tightened to secure the hose in fluid tight relation to the hose connector 42.
  • the body 44 also has a wall 54 which defines a passage 56 therethrough.
  • the body 44 also has a stepped region 58 adjacent to the first end 46, which may be formed by milling down the wall 54 adjacent to the first end 46.
  • the stepped region 58 defines a shoulder or stop 60 which is disposed a distance "d" from the first end 46.
  • Figs. 4-6 show an assembly of the hose connector 42 with the tank 34, for example.
  • the hose connector 42 is shown in a pre-insertion state relative to a wall 62 of the tank 34. It will be recognized that an opening 64 is provided in the wall 62 and is sized to receive the first end 46 of the hose connector 42.
  • the tank 34 and hose connector 42 are preferably made of aluminum
  • the tank 34 and hose connector 42 will preferably be brazed together to provide a leak-tight joint, although alternative means of attachment, for example soldering, can be used when the tank 34 and/or hose connector 42 are made of other materials.
  • braze alloy will be applied before assembly to the wall 62 of the tank and/or the body 44 of the hose connector 42.
  • the wall 54 of the hose connector 42 is milled down to define the shoulder 60, it is more advantageous to apply the braze clad to the wall 62 of the tank 34. This is the case because the milling process used to form the stepped region 58 will remove the braze alloy from the exterior surface of the wall 54 of the hose connector 42.
  • the cladding may be applied to both sides 66, 68 of the wall 62, or alternatively only to one side 66 or 68. It is preferable, however, to use cladding on both sides 66, 68 of the wall 62, so that any gap between the wall 62 and the body 44 of the hose connector 42 is filled and so that a brazed joint may be formed both on the internal and eternal sides 66, 68 of the wall 62.
  • the clad wall 62 has a thickness "t" (inclusive of the thickness of the cladding material) which is less than the distance "d".
  • braze alloy in the form of a powder may be applied to the joint to be formed.
  • the hose connector 42 is moved in the direction of an arrow 70, such that the first end 46 of the hose connector 42 enters the opening 64 in the wall 62.
  • the shoulder 60 of the hose connector 42 abuts the eternal surface 66 of the wall 62. Abutment of the shoulder 60 with the eternal surface 66 of the wall 62 prevents further movement of the hose connector 42 into the opening 64.
  • the first end 46 of the hose connector 42 extends into the tank 34 a distance equal to "d" (the predetermined distance from the first end 46 to the shoulder 60) less “t” (the thickness of the wall 62 of the tank 34).
  • Fig. 6 shows the completed assembly 72 of the hose connector 42 and the tank 34, wherein the first end 46 of the hose connector 42 has been deformed to form a flared out region 74 which abuts against the interior surface 68 of the tank wall 62.
  • the abutment of the flared out region 74 and the interior surface 68 of the tank wall 62 prevents separation of the hose connector 42 from the tank wall 62, and, in particular, the first end 46 from being withdrawn from the opening 64 in the tank wall 62.
  • the flaring out of the first end 46 urges to the shoulder 60 into closer abutment with the external surface 68 of the wall 62.
  • this method ensures that the first end 46 of the connector 42 is disposed only to a predetermined depth through the opening 64 in the tank wall 62.
  • the method achieves this result without the necessity of tack welding the hose connector 42 to the tank wall 62.
  • the post connector-tank assembly 72 can now be brazed, thereby providing a secure and leak tight joint between the hose connector 42 and the tank 34, in particular between the shoulder 60 of the hose connector 42 and the external surface 68 of the wall 62 and the flared out region 74 of the hose connector 42 and the internal surface 66 of the wall 62.
  • FIG. 7-8 A modified embodiment of the invention is shown in Figs. 7-8.
  • like components are given the same reference numerals as in the previous description of the embodiment of Figs. 1-6, and will not be redescribed.
  • the embodiment of Figs. 7-8 omits the stepped region 58 adjacent the first end 46 in favor of oppositely directed ribs or beads 76, 78 which define a stop.
  • the ribs 76, 78 are located on opposite flat sides 80, 82 of the flattened section 50, and have stop surfaces 84,86 most nearly adjacent the first end 46 spaced therefrom by the distance "d".
  • the ribs 76, 78 may be formed, for example, by applying a force to the interior surface of the wall 54 to deform the wall 54 radially outward such that a raised area is formed on the sides 80, 82 of the body 44 of the hose connector 42. Because, unlike the first embodiment, it is not necessary to remove material from the sides 80, 82 to form the ribs 76, 78, braze alloy may be applied to the sides 80, 82 instead of or in addition to the braze alloy applied to the wall 62 of the tank 34, for example. By applying the braze alloy to the hose connector 42 instead of the tank 34, less braze alloy may be used, resulting in a less expensive hose connector-tank assembly 72. However, by applying braze alloy to the tank 34 is believed that there is less of a chance that a leak-tight braze joint will not form between the hose connector 42 and the tank 34.
  • the stop surfaces 84, 86 of the ribs 76, 78 serve the same purpose as the shoulder 60, i.e., to abut against the external surface 68 of the wall 62 of the tank 34, for example. With the stop surfaces 84, 86 abutting the external surface 68, the first end 46 of the hose connector 42 extends into the tank 34 a predetermined distance, depending on the values of the distance from the stop surfaces 84, 86 to the first end 46, the thickness of the wall 62 of the tank 34, and the placement of the cladding material. If the cladding material is applied to the surfaces 84, 86 and the exterior surface 68 of the wall, then the distance which the first end 46 of the hose connector 42 extends into the tank 34 will be reduced in accordance with the thickness of the cladding material applied.
  • FIG. 9-11 A still further embodiment of the hose connector according to the present invention is shown in Figs. 9-11, again with like components numbered similarly.
  • the hose connector 42 has four slits 88, 90, 92, 94.
  • the wall is nominally rectangular with rounded corners; and the slots 88, 90, 92, 94 are located in such corners.
  • the slits 88, 90, 92, 94 are provided to minimize the chance of metal tearing during the deformation process of the first end 46 of the hose connector 42.
  • the slits 88, 90, 92, 94 also decrease the force required during the deformation process to deform the end 46 of the hose connector 42, and may increase the extent to which the end 46 may be flared out to maintain the hose connector 42 fixed to the wall 62 of the tank 34, for example.
  • the depth of the slit (shown as “s” in Fig. 11) is less than the distance "d" - "t” (the distance from the surfaces 84, 86 to the first end 46 less the thickness of the wall 62 of the tank 34), taking into account the placement and thickness of the cladding material.
  • any of the embodiments of the hose connector 42 according to the present invention described above may be used to assure proper insertion of the hose connector 42 into the opening 64 in the tank wall 62.
  • the risk of flow obstruction due to the extension of the hose connector 42 into the tank 34 is limited. This is especially true as the end 46 of the hose connector 42 disposed in the tank 34 is flared out against the interior surface 74 of the tank 34 to secure the hose connector 42 and tank 34 together, thereby limiting the extent to which the hose connector 42 extends into the tank 34.
  • the risk of weak or leaky joints formed by not inserting the hose connector 42 far enough into the tank 34 may be avoided through the abutment of the body 44 of the hose connector 42 and the exterior surface 68 of the tank 34.
  • the flaring out of the end 46 of the hose connector 42 against the interior surface 74 of the wall 62 also assists in encouraging a snug abutment of the body 44 of the hose connector 42 with the exterior surface 68 of the tank 34.
EP00303885A 1999-05-19 2000-05-09 Assemblage d'un raccord de tuyau et d'un réservoir et méthode d'assemblage Withdrawn EP1054227A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US314808 1989-02-24
US31480899A 1999-05-19 1999-05-19

Publications (2)

Publication Number Publication Date
EP1054227A2 true EP1054227A2 (fr) 2000-11-22
EP1054227A3 EP1054227A3 (fr) 2001-02-28

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EP00303885A Withdrawn EP1054227A3 (fr) 1999-05-19 2000-05-09 Assemblage d'un raccord de tuyau et d'un réservoir et méthode d'assemblage

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EP (1) EP1054227A3 (fr)
CA (1) CA2308804A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2856786A1 (fr) * 2003-06-26 2004-12-31 Valeo Climatisation Raccord a section progressive pour un echangeur de chaleur, notamment de vehicule automobile
EP1526351A2 (fr) * 2003-10-24 2005-04-27 Behr GmbH & Co. KG Procédé de fabrication d'un échangeur de chaleur et échangeur de chaleur fabriqué selon un tel procédé

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2272769A1 (en) * 1974-05-31 1975-12-26 Chausson Usines Sa Joint between pipe and tank wall - has gasket wedged between recess flanged wall spigot and set back pipe flange
FR2626660B1 (fr) * 1988-02-02 1990-07-06 Hutchinson Sa Dispositif d'assemblage pour un ensemble echangeur de chaleur/raccord tubulaire
JPH03199897A (ja) * 1989-12-27 1991-08-30 Toyo Radiator Co Ltd 熱交換器のチューブ構造
JP3393957B2 (ja) * 1995-05-30 2003-04-07 サンデン株式会社 熱交換器の流体給排管接合方法

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2856786A1 (fr) * 2003-06-26 2004-12-31 Valeo Climatisation Raccord a section progressive pour un echangeur de chaleur, notamment de vehicule automobile
EP1526351A2 (fr) * 2003-10-24 2005-04-27 Behr GmbH & Co. KG Procédé de fabrication d'un échangeur de chaleur et échangeur de chaleur fabriqué selon un tel procédé
EP1526351A3 (fr) * 2003-10-24 2013-04-10 Behr GmbH & Co. KG Procédé de fabrication d'un échangeur de chaleur et échangeur de chaleur fabriqué selon un tel procédé

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Publication number Publication date
EP1054227A3 (fr) 2001-02-28
CA2308804A1 (fr) 2000-11-19

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