EP0556127A1 - Tubulure de raccordement pour une boîte à fluide d'échangeur de chaleur - Google Patents

Tubulure de raccordement pour une boîte à fluide d'échangeur de chaleur Download PDF

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Publication number
EP0556127A1
EP0556127A1 EP93400354A EP93400354A EP0556127A1 EP 0556127 A1 EP0556127 A1 EP 0556127A1 EP 93400354 A EP93400354 A EP 93400354A EP 93400354 A EP93400354 A EP 93400354A EP 0556127 A1 EP0556127 A1 EP 0556127A1
Authority
EP
European Patent Office
Prior art keywords
wall
fluid box
tubing
shear
flattened 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.)
Withdrawn
Application number
EP93400354A
Other languages
German (de)
English (en)
French (fr)
Inventor
Philippe Le Gauyer
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.)
Valeo Thermique Moteur SA
Original Assignee
Valeo Thermique Moteur 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 Valeo Thermique Moteur SA filed Critical Valeo Thermique Moteur SA
Publication of EP0556127A1 publication Critical patent/EP0556127A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
    • B21D39/06—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders of tubes in openings, e.g. rolling-in
    • 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

Definitions

  • the invention relates to heat exchangers and in particular those intended to be used as condensers in air conditioning installations for motor vehicles.
  • Heat exchangers of this type comprise at least one fluid box connected to a bundle of tubes and provided with at least one connecting tube used for the inlet or outlet of a fluid, for example a fluid refrigerant in the case of a condenser.
  • heat exchangers there may be provided either a single fluid box connected to a bundle of pin or U-shaped tubes, or two fluid boxes connected respectively to the two ends of a bundle of straight tubes.
  • the invention relates more particularly to a tubing for a heat exchanger fluid box, this tubing comprising a cylindrical tubular body delimited by a metal wall and extended by a flattened tubular end, obtained by deformation of the wall and suitable for being fitted in an oblong opening made through a metal wall of the fluid box.
  • Tubing of the aforementioned type is generally connected to fluid boxes of small transverse dimensions, in particular to tubular fluid boxes, such as those used in condensers.
  • Such pipes generally have a circular cylindrical body and they are most often connected to fluid boxes of circular cylindrical shape, the diameter of which is close to that of the body of the pipes.
  • the tubing cannot maintain as good resistance to the pressure of the fluid as in the body of the tubing.
  • this transition zone increases the overall height of the tubing because the cylindrical body of the latter is necessarily attached to a certain distance from the wall of the fluid box, which depends on the radius of curvature. the rounded shoulder.
  • the object of the invention is in particular to overcome the aforementioned drawbacks.
  • connection tube of the type mentioned in the introduction which comprises at least one shear cut which is made in the thickness of the wall and which extends over part of the periphery of the tube, in a region between the body and the flattened end, to form a front lip located on the side of the body and capable of pressing against the wall of the fluid box after fitting of the flattened end of the tubing into the oblong opening of the fluid box.
  • the wall of the tubing forms an abrupt detachment in a region between the body and the flattened end.
  • the tubing retains the cylindrical shape of its body and this up to the area where the shear cut is located, which makes it possible to give the tubing a cylindrical shape over its entire length and thus improve its hold. with pressure.
  • connection tube comprises at least one shear cutout which is made, at least in part, over a depth greater than the thickness of the wall, so as to form a slot formed by a wall recess.
  • connection tube comprises at least one shear cutout which is made to a depth less than the thickness of the wall. This thus results in a detachment of the wall, without the formation of a slit as previously.
  • connection tube in which the flattened end comprises two flat and opposite wall sections.
  • the tubing then comprises two shear cuts made respectively near the two wall sections.
  • the front lip formed by the shear cut has a profile suitable for conforming to the shape of the wall of the fluid box, after fitting of the tubing. This results in a form of cooperation between the tubing and the fluid box which then facilitates their connection.
  • the body of the tubing is circular cylindrical.
  • the invention in another aspect, relates to a heat exchanger fluid box comprising a metal wall provided with an oblong opening, this fluid box being provided with a connection tube, the flattened end of which is fitted in the aforementioned oblong opening so that the front lip of the or each shear cutout abuts against the wall of the fluid box.
  • the metal wall has parallel generators and the oblong opening has a large dimension which extends in a direction substantially parallel to the generators.
  • the metal wall of the fluid box is of circular cylindrical shape.
  • the connecting pipe is assembled to the fluid box by welding or by brazing.
  • FIGS. 1 to 4 represent a connection tube 10 according to the invention which comprises a cylindrical tubular body 12 which, in the example, is of circular cylindrical configuration, of axis XX (FIGS. 2 and 4).
  • the body 12 is delimited by a metal wall 14, for example made of copper or aluminum, having a thickness e (FIG. 4).
  • the body 12 has a first end 16 which, in the example, is straight but which could be bent, if necessary.
  • the body 12 On the side opposite the end 16, the body 12 is extended by a flattened tubular end 18, obtained by deformation of the wall 14.
  • the end 18 has an oblong cross section, of substantially rectangular shape, delimited by two wall sections 20, parallel to each other and extending over a length L1 and by two wall sections 22, parallel to each other and extending over a length L2, less than L1 ( Figures 1 and 2).
  • the wall sections 20 are connected perpendicular to the wall sections 22 by rounded edges 24.
  • the external length L1 of the flattened end 18 is substantially equal to the external diameter D of the body 12 and the external length L2 is substantially less than D-2e.
  • the flattened end 18 thus forms a generally rectangular frame whose generatrices are parallel to the axis X-X.
  • the flattened end 18 is obtained, at least in part, by a shearing action applied to the wall 14 of the tube, in a direction substantially perpendicular to the axis XX and in a determined region between the body 12 and the flattened end 18.
  • the tubing comprises two shear cuts 26 made in the thickness e of the wall 14, in opposite regions of the latter, the shearing being carried out in two directions close to the perpendicular to the axis X-X.
  • the cuts 26 are made to a maximum depth substantially equal to 2e and therefore greater than the thickness of the wall 14.
  • Each of the shear cutouts 26 forms a front lip 28 which is situated on the side of the body 12 and which has a general arc-of-circle shape, of non-planar configuration (FIGS. 1 to 4).
  • each of the cutouts 26 has a maximum depth greater than the thickness of the wall 14, there is formed between each lip 28 and the adjacent wall section 20 a slot 30 which is visible in Figures 1, 2 and 4.
  • the wall 14 body 12 thus forms two recesses situated in diametrically opposite regions and leading to the two wall sections 20.
  • the four rounded edges 24 of the flattened end 18 protrude relative to the external wall of the body 12. There are also obtained, due to the shearing action, four chamfers 32, respectively connecting the edges 24 to the outside. of the body 12 and four chamfers 34, respectively connecting the inside of the edges 24 with the inside of the body 12.
  • the flattened end 18 of the tube 10 is intended to be fitted into a fluid exchanger fluid box 36, shown in broken lines.
  • the fluid box 36 is delimited by a metal wall 38 of circular cylindrical shape whose generatrices extend perpendicular to the sheet of paper.
  • the wall 38 there is an oblong opening 40 having an inner contour of shape homologous to that of the outer contour of the flattened end 18 to allow cooperation in shape.
  • the opening 40 thus has a generally oblong rectangular shape whose small dimension extends in the plane of the drawing and whose large dimension extends perpendicular to the plane of the drawing, that is to say parallel to the generatrices of the wall. 38.
  • the fluid box 36 is part of a heat exchanger and is connected to the tubes 42 of a bundle.
  • Each tube 42 extends in a direction YY, not parallel to XX, and has a first end 44 introduced into an opening of homologous shape made in the wall 38.
  • Each tube has an opposite end (not shown) intended to be received in a similar fluid box.
  • each of the two front lips 28 of the tube 10 comes to bear against the metal wall 38 of the fluid box 36 so as to form a stop for the fitting.
  • each of the frontal lips 28 has a non-planar semicircle shape, as best understood in FIG. 3.
  • the non-planar shape of the semicircle is chosen so that each lip 28 has a profile suitable for fitting the shape of the wall 38 after fitting the flattened end 18 into the opening 40.
  • the tubing 10 is definitively assembled to the fluid box 36 by brazing or welding, so as to provide a molten filler metal filling the free spaces between the tubing 10 and the opening 40.
  • the tubing 10 can be arranged in a location and with a chosen orientation with respect to the wall 38 of the tubing 36.
  • the flattened end 18 of the tubing 10 is here engaged in an opening 46 formed through a flat wall 48 of a fluid box. Since the flattened end results from a cutting action by shearing, the size of the tubing corresponds to the height H1 of the body 12.
  • connection tube 50 comprising a cylindrical body 52 connected to a flattened end 54 via a transition zone 56, in which the wall of the tubing forms a rounded shoulder.
  • the tubing has, for a body 52 of the same height H1 as the body 12 of Figure 5, a total footprint H2 greater than H1.
  • this height H2 is equal to H1 + h, the value h representing the height of the transition zone already mentioned, which can vary, taking into account the variation in the elastic limit of the constituent material.
  • the invention finds an application to the installation of connecting pipes on heat exchanger fluid boxes, in particular fluid boxes forming part of condensers for air conditioning installations of motor vehicles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP93400354A 1992-02-14 1993-02-11 Tubulure de raccordement pour une boîte à fluide d'échangeur de chaleur Withdrawn EP0556127A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9201706A FR2687465A1 (fr) 1992-02-14 1992-02-14 Tubulure de raccordement pour une boite a fluide d'echangeur de chaleur et boite a fluide munie d'une telle tubulure.
FR9201706 1992-02-14

Publications (1)

Publication Number Publication Date
EP0556127A1 true EP0556127A1 (fr) 1993-08-18

Family

ID=9426667

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93400354A Withdrawn EP0556127A1 (fr) 1992-02-14 1993-02-11 Tubulure de raccordement pour une boîte à fluide d'échangeur de chaleur

Country Status (6)

Country Link
US (1) US5275236A (enrdf_load_stackoverflow)
EP (1) EP0556127A1 (enrdf_load_stackoverflow)
JP (1) JPH06117796A (enrdf_load_stackoverflow)
BR (1) BR9300561A (enrdf_load_stackoverflow)
FR (1) FR2687465A1 (enrdf_load_stackoverflow)
MX (1) MX9300773A (enrdf_load_stackoverflow)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030199657A1 (en) * 1994-12-22 2003-10-23 Davis Donna Sue Polyethylene articles with improved resistance to water vapor transmission
DE19846267A1 (de) * 1998-10-08 2000-04-13 Behr Gmbh & Co Sammelrohreinheit für einen Wärmeübertrager
US6438936B1 (en) * 2000-05-16 2002-08-27 Elliott Energy Systems, Inc. Recuperator for use with turbine/turbo-alternator
US6749007B2 (en) * 2000-08-25 2004-06-15 Modine Manufacturing Company Compact cooling system with similar flow paths for multiple heat exchangers
DE60100617T2 (de) 2000-10-06 2004-06-09 Visteon Global Technologies, Inc., Dearborn Herstellung eines Rohres für einen Wärmetauscher
ES2249978B1 (es) * 2004-04-07 2007-06-16 Valeo Termico, S.A. Intercambiador de calor para gases, en especial de los gases de escape de un motor.
US20080106095A1 (en) * 2006-11-08 2008-05-08 Harris Richard K Heater core connector tube
US8950600B2 (en) * 2011-06-01 2015-02-10 Salvatore J. Sisto Method and system for securing a cross member to a tube
DE112012006995T5 (de) 2012-10-10 2015-09-10 Trane International Inc. Kopfteil für einen Verdampfer
EP3341672A1 (en) * 2015-08-24 2018-07-04 MAHLE International GmbH Heat exchanger
AU2017338254B2 (en) * 2016-10-31 2019-12-12 Yue Zhang Hollow pipe-sandwiching metal plate and applications thereof
US10648604B2 (en) 2017-01-06 2020-05-12 Bechtel Oil, Gas And Chemicals, Inc. Branch fitting for reducing stress caused by acoustic induced vibration

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2189142A2 (enrdf_load_stackoverflow) * 1972-06-23 1974-01-25 Chausson Usines Sa
FR2498495A1 (fr) * 1981-01-27 1982-07-30 Iao Industrie Riunite Spa Procede permettant de relier de facon etanche des conduits a un support fait de materiau en feuille, notamment un couvercle de pompe a carburant
GB2167850A (en) * 1984-12-04 1986-06-04 Sanden Corp Aluminum heat exchanger

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US603244A (en) * 1898-05-03 Flush joint for tubular-fram e constructions
US1546858A (en) * 1924-04-07 1925-07-21 Behm Jack Seamless connecter tube
US2221934A (en) * 1938-03-29 1940-11-19 Starline Pipe connection
US2636752A (en) * 1947-11-24 1953-04-28 Allis Chalmers Mfg Co Conduit with branch applied against spot face of headers
DE2353362C3 (de) * 1973-10-25 1982-05-13 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart Wasserkasten für Wärmetauscher
NO141963L (enrdf_load_stackoverflow) * 1975-03-19
US3971500A (en) * 1975-07-16 1976-07-27 General Electric Company Method of metallurgically joining tubing to a wall segment
US4334703A (en) * 1979-08-09 1982-06-15 Arvin Industries, Inc. Tube-to-plate connection
JPS58221393A (ja) * 1982-06-18 1983-12-23 Hitachi Ltd コルゲ−ト形熱交換器
JPH0717965Y2 (ja) * 1990-02-22 1995-04-26 サンデン株式会社 熱交換器

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2189142A2 (enrdf_load_stackoverflow) * 1972-06-23 1974-01-25 Chausson Usines Sa
FR2498495A1 (fr) * 1981-01-27 1982-07-30 Iao Industrie Riunite Spa Procede permettant de relier de facon etanche des conduits a un support fait de materiau en feuille, notamment un couvercle de pompe a carburant
GB2167850A (en) * 1984-12-04 1986-06-04 Sanden Corp Aluminum heat exchanger

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 8, no. 76 (M-288)(1513) 9 Avril 1984 & JP-A-58 221 393 ( HITACHI SEISAKUSHO K.K. ) 23 Décembre 1983 *

Also Published As

Publication number Publication date
JPH06117796A (ja) 1994-04-28
FR2687465A1 (fr) 1993-08-20
FR2687465B1 (enrdf_load_stackoverflow) 1994-04-22
MX9300773A (es) 1993-11-01
BR9300561A (pt) 1993-08-17
US5275236A (en) 1994-01-04

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