EP0451507A1 - Echangeur de chaleur - Google Patents

Echangeur de chaleur Download PDF

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Publication number
EP0451507A1
EP0451507A1 EP91103474A EP91103474A EP0451507A1 EP 0451507 A1 EP0451507 A1 EP 0451507A1 EP 91103474 A EP91103474 A EP 91103474A EP 91103474 A EP91103474 A EP 91103474A EP 0451507 A1 EP0451507 A1 EP 0451507A1
Authority
EP
European Patent Office
Prior art keywords
sleeves
strip
sleeve
heat exchanger
exchanger according
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.)
Granted
Application number
EP91103474A
Other languages
German (de)
English (en)
Other versions
EP0451507B1 (fr
Inventor
Herbert Dr.-Ing. Damsohn
Walter Dipl.-Ing. Wolf
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.)
Mahle Behr GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
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 Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Publication of EP0451507A1 publication Critical patent/EP0451507A1/fr
Application granted granted Critical
Publication of EP0451507B1 publication Critical patent/EP0451507B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F28F9/165—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by using additional preformed parts, e.g. sleeves, gaskets
    • F28F9/167—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by using additional preformed parts, e.g. sleeves, gaskets the parts being inserted in the heat-exchange conduits

Definitions

  • the invention relates to a heat exchanger with a plurality of tubes which are held with at least one end in assigned openings in a tube sheet, sleeves being pushed into the tube ends in the region of the tube base and pressed non-positively against the tubes and the openings in the tube sheet.
  • Heat exchangers of this type are known (DE 35 45 554 A1 - P 7454).
  • a tube-bottom connection is provided, in which the sleeves inserted into the tube ends press the tube firmly against the opening in the tube base after it has expanded, so that a liquid-tight connection is produced. Since the sleeve is largely inside the tube, no parts of the sleeve protrude beyond the tube-bottom connection.
  • Pipe-to-floor connections of this type require the individual sleeves to be inserted into the pipe ends before they are expanded. This is relatively expensive.
  • the invention has for its object to design a heat exchanger of the type mentioned so that the insertion of the sleeves is significantly simplified, so that the manufacture of the heat exchanger is easier.
  • a heat exchanger of the type mentioned that at least part of the Sleeves is arranged on a common sleeve bottom and each adapted to the position of the openings and the tubes in the tube sheet.
  • This configuration results in an assembly part with which a plurality of sleeves can be brought to the assigned locations in a single operation and inserted in a simple manner into the pipe ends.
  • the manufacture of heat exchangers with inserted sleeves which ensure a particularly good tightness of the pipe-floor connection, is considerably simplified.
  • the sleeves can either be pressed against the tubes and the openings in the tube sheet by widening or by axially pressing them in excess (sleeve diameter is slightly larger than the tube diameter).
  • the features of claim 2 have the advantage that a strip can be produced in a particularly simple manner, for example by deep-drawing in the desired manner, and can then also be handled particularly easily during assembly.
  • the sleeves - as is known per se - be provided with a circumferential flange running outward at one end, which facilitates the pressing of the sleeves into the pipe ends and secures the position of the sleeves.
  • these flanges are connected to one another in a common plane through the sleeve base to form the strip. As a result, the running-in resistance can be reduced, in particular if the sleeve infeed is more rounded.
  • claims 4 and 5 bring the essential advantage that despite the arrangement in a common strip-like sleeve bottom, all sleeves are largely individually held so that they can adapt to the associated pipe ends during assembly within the scope of existing tolerances .
  • this embodiment also has the advantage that material from the Flange area of the sleeve can flow to expand the sleeve, which would not be possible or not easily possible if the flange were connected all around to the bottom of the sleeve. Otherwise the bottom of the case would warp.
  • the sleeve base acts as a flow guide surface and thus causes a lower flow resistance of the heat exchanger.
  • the sleeves can be deep-drawn in a simple manner, as previously indicated, with the associated strip-shaped sleeve bottom.
  • the webs for holding the flanges can be punched out or cut. This ensures simple and economical production.
  • the sleeves and sleeve bottom can be made of a metal sheet, but also of plastic.
  • FIG. 1 and 2 schematically show a heat exchanger (1) which, in a manner known per se, has a finned tube block which consists of a plurality of tubes (2) arranged parallel to one another and of fins arranged in a lamella-like manner between these tubes and perpendicular to the tube axes (3) exists.
  • the tube ends shown in FIG. 2 are pressed tightly into a tube sheet (4) which, as shown in FIG. 1, is provided with a plurality of openings (5) (see FIG. 3b) into which the tubes ( 2) pushed in with their ends and, as will be explained with reference to FIGS. 3a, 3b and 4a, 4b, are fastened by radial widening.
  • the tube sheet (4) is then provided in a known manner with a water tank (6) through which one of the heat exchange means, preferably a liquid, can be fed to the finned tube block, which in turn is perpendicular to the tube axes and across the spaces between the fins (3). can be flowed through with a second heat exchange medium, preferably air.
  • Heat exchangers of this type are used, for example, as radiators or coolers in motor vehicles.
  • sleeves (7) are inserted into the open ends of the tubes (2) and all of them sleeves inserted into the tube ends of the tubes (2) are part of a sleeve base (8) designed in the form of a strip, with which all sleeves (7) can be handled together and fed to the tube ends.
  • the sleeves (7) are attached to the sleeve base (8) so that their relative position to one another is matched to the arrangement of the tubes (2) or the openings (5) in the tube base (4).
  • the sleeves (7) can therefore be assigned to the tube sheet (4) and the tubes (2) together, or at least partially together, as will be explained later.
  • Fig. 3a and Fig. 3b show that this is done first in such a way (Fig. 3b) that the tubes (2) each from one side in the associated and the opening (5) forming, designed as passages (9) of the tube sheet (4) are inserted, the tubes (2) also being provided with the loosely pushed-on ribs (3) in a known manner.
  • the sleeve base (8) is fed to the tube sheet (4) in such a way that the sleeves (7) are pushed into the open ends of the tubes (2) with appropriate play. 14 will be explained that all sleeves (7) are provided with a way to compensate for tolerances.
  • the tube (2) is first expanded with two expanding tools so that the ribs (3) are firmly seated in it. Then the sleeve (7) is widened with a second tool so that it is pressed with the tube (2) outwards against the collar (9) of the tube sheet. In this way, the tube sits tightly in the tube sheet.
  • FIG. 4a and 4b show a modification of the manufacturing process insofar as here the insertion process according to FIG. 4b is carried out analogously, as is explained with reference to FIG. 3b.
  • the only difference in production is that the tube sheet area with the sleeve (7) is one and the same tool, is expanded, for example, with an expansion ball to the same extent as the tube (2) in the region of the ribs (3).
  • the widened inside diameter (d i ) of the sleeve (7) therefore corresponds to the widened pipe diameter (d R ).
  • the manufacturing process of a heat exchanger according to the invention can be simplified by using the strip-shaped sleeve base (8) on which many sleeves are arranged accordingly. It is namely not necessary to assign the plurality of sleeves to the corresponding pipe ends either by hand or by means of likewise complex assembly devices. It is also advantageous that the sleeves (7) receive a stop area through the sleeve bottom, which prevents the sleeves from being pushed in too far or from being inserted insufficiently. All sleeves can be inserted flush with their flange corresponding to the sleeve bottom (8) in a very simple manner. The flange of the sleeves (7) also serves as a stop for the ends of the tubes (2) inserted from the other side.
  • the sleeves (7) can be produced in a very simple manner, for example in the deep-drawing process, from a sheet metal strip unwound from a coil. It is also possible to produce the base of the sleeve with the sleeves from plastic by injection molding. This strip must then be subdivided into sleeve base pieces (8 ') according to FIG. 5, the separating cuts (10) each taking place obliquely to the longitudinal direction of the strip (8) in the exemplary embodiment of FIG. 5, at an angle which is adapted to the angle is, which results from the arrangement of the sleeves (7) in the strip (8). Dash-dotted lines indicate the connecting line (11) between the axes of two adjacent sleeves (7).
  • the separating cut (10) is made at the same angle to the longitudinal edges of the strip (8).
  • 6 shows a modification of the arrangement of the separating cuts (10) insofar as the separating cuts here (10, 10 ') each take place at a changing angle, so that, as in FIG. 5, strips (8') in parallelepiped form do not arise, but strips (8 '') with mutually identical trapezoidal shapes.
  • separating cuts (12 ') are also provided in step form, but here are determined by the arrangement of a recess (13) with which a sleeve is cut out of the strip-shaped sleeve bottom (8) during the separating cut .
  • Such strip shapes (80 '') can also be used to manufacture the heat exchanger as required.
  • 10 and 11 show different separating cuts (14 and 15), which also enable a different strip shape (81 and 81 ') with the same design of the sleeve bottom strip (8). It would also be possible to make the separating cuts in a rounded shape instead of a stepped shape.
  • 12a and 12b are intended to make the meaning and purpose of this different separating cut arrangement clear.
  • 12a and 12b show the outline of the water tank (6), the inner wall (6a and 6a ') of which should surround the outermost pipe pairs as closely as possible.
  • the on the left side (Fig. 12a) above the tube sheet (4) arranged sleeve bottom strip part (80 ') - which can be made according to FIG. 7 or also according to FIG. 8 - fits the left edge (6a) of the Water box well on and runs, which is not shown in detail, to the right edge of the water box (6). Its length therefore corresponds to the length of the tube sheet and the water tank.
  • Fig. 12a shows the outline of the water tank (6), the inner wall (6a and 6a ') of which should surround the outermost pipe pairs as closely as possible.
  • the on the left side (Fig. 12a) above the tube sheet (4) arranged sleeve bottom strip part (80 ') - which can be made according to
  • the sleeve bottom strip (8 ') is separated so that a tube-free separation space can remain in the middle of the water box, which, for example, which will be explained later, can be used to arrange a partition between two tube bundles.
  • the sleeve bottom strip part (8 ') inserted on the right half (FIG. 12b), for example produced according to FIG. 5, extends in the example with its lower right edge (16) into the area of the wall (6a') of the water tank (6) .
  • the strip part (8 ') shown is therefore not suitable for the water tank (6) shown.
  • FIG. 13 shows a solution in which sleeve base strip parts (80 ′′) are used in the production method according to FIG. 9.
  • a partition (25) runs in the water tank (6) in this area, which is indicated by dashed lines.
  • the separating cuts (12 ') run here in such a way that the sleeve base strip parts (80' ') adapt to the interior of the water tank and that the recesses (13) formed thereby are used to form the intermediate space for arranging the partition wall (25) .
  • each sleeve (7) with the flange (17) running at one end approximately at right angles to the sleeve axis (18) does not pass directly into the strip-shaped material of the sleeve bottom strip (8). Rather, each flange (17) of a sleeve (7) is connected to the strip part (8) only at three webs (19) which are arranged at equal intervals on the circumference, but is otherwise separated from it by approximately crescent-shaped incisions (20).
  • These incisions (20) for their part adjoin the bracket (21) in the exemplary embodiment, which as Narrow, flexible connecting bridges are only connected at their ends to the plane of the sleeve base strip (8), but are otherwise separated from them by entire narrow crescent-like incisions (22). Two of the brackets (21) therefore open at a common connection point (23) in the plane of the strip-like sleeve base (8).
  • each individual sleeve is largely freely movable on the common strip (8). It can therefore easily adapt to tolerance deviations when inserted into the pipe ends.
  • the individual suspension of the sleeves (7) has the advantage that material can flow from the area of the flange (17) without that the area of the outer sleeve bottom (8) is affected. Discarding or deforming the connecting parts of the sleeve base (8) between the individual sleeves is thus excluded. A flawless This ensures production with which the necessary tightness of the pipe-floor connection is achieved.

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  • 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)
EP91103474A 1990-04-13 1991-03-07 Echangeur de chaleur Expired - Lifetime EP0451507B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4012045 1990-04-13
DE4012045A DE4012045A1 (de) 1990-04-13 1990-04-13 Waermetauscher

Publications (2)

Publication Number Publication Date
EP0451507A1 true EP0451507A1 (fr) 1991-10-16
EP0451507B1 EP0451507B1 (fr) 1994-06-01

Family

ID=6404394

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91103474A Expired - Lifetime EP0451507B1 (fr) 1990-04-13 1991-03-07 Echangeur de chaleur

Country Status (2)

Country Link
EP (1) EP0451507B1 (fr)
DE (2) DE4012045A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007006446A1 (fr) * 2005-07-07 2007-01-18 Ruhr Oel Gmbh Échangeur de chaleur à faisceau tubulaire, pourvu d'une plaque tubulaire à revêtement résistant à l'usure

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4325427A1 (de) * 1993-07-29 1995-02-02 Behr Gmbh & Co Wärmetauscher, insbesondere Kraftfahrzeugkühler
DE102009030824A1 (de) 2009-06-26 2010-12-30 Behr Gmbh & Co. Kg Wärmeübertrager, insbesondere Kühlmittelkühler für Kraftfahrzeuge sowie Verfahren zur Herstellung des Wärmeübertragers
DE102009057175A1 (de) 2009-12-05 2011-06-09 Volkswagen Ag Wärmetauscher
DE102015102245B4 (de) * 2015-02-17 2022-03-31 Wallstein Ingenieur Gmbh Verbindung zwischen einem Rohr und einem Rohrboden eines Wärmetauschers sowie Verfahren zur Herstellung einer solchen Verbindung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE881199C (de) * 1939-07-28 1953-06-29 Otto & Co Gmbh Dr C Fertigungsverfahren fuer innenverbleite Fluessigkeitsvorwaermer
FR2237160A1 (en) * 1973-07-13 1975-02-07 Chausson Usines Sa Multi tubular finned radiator for vehicle engine coolant - comprising metal tube between plastic reservoir manifolds of matched thermal expansion
US4465129A (en) * 1982-04-19 1984-08-14 Blackstone Corporation Heat exchanger core assembly construction and methods of making the same
DE3545554A1 (de) * 1985-12-21 1987-07-02 Sueddeutsche Kuehler Behr Rohr-boden-verbindung, insbesondere fuer waermetauscher
EP0277070A1 (fr) * 1987-01-28 1988-08-03 Jean-Claude Lelant Plaque tubulaire d'échangeur de générateur thermique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7302164U (de) * 1973-05-10 Behr J Sueddeutsche Kuehlerfabrik Elastisches Dichtungselement für eine Wand durchdringende Rohre
AT287030B (de) * 1966-06-27 1971-01-11 Waagner Biro Ag Einrichtung zur Verhinderung der Überhitzung der Einlaufstellen der Rohre bzw. der Rohrplatten von Rohrwärmetauschern
DE3724675A1 (de) * 1987-07-25 1989-02-02 Heraeus Elektroden Waermeuebertrager

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE881199C (de) * 1939-07-28 1953-06-29 Otto & Co Gmbh Dr C Fertigungsverfahren fuer innenverbleite Fluessigkeitsvorwaermer
FR2237160A1 (en) * 1973-07-13 1975-02-07 Chausson Usines Sa Multi tubular finned radiator for vehicle engine coolant - comprising metal tube between plastic reservoir manifolds of matched thermal expansion
US4465129A (en) * 1982-04-19 1984-08-14 Blackstone Corporation Heat exchanger core assembly construction and methods of making the same
DE3545554A1 (de) * 1985-12-21 1987-07-02 Sueddeutsche Kuehler Behr Rohr-boden-verbindung, insbesondere fuer waermetauscher
EP0277070A1 (fr) * 1987-01-28 1988-08-03 Jean-Claude Lelant Plaque tubulaire d'échangeur de générateur thermique

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007006446A1 (fr) * 2005-07-07 2007-01-18 Ruhr Oel Gmbh Échangeur de chaleur à faisceau tubulaire, pourvu d'une plaque tubulaire à revêtement résistant à l'usure
US8210245B2 (en) 2005-07-07 2012-07-03 Ruhr Oel Gmbh Shell-and-tube heat exchanger comprising a wear-resistant tube plate lining
CN101228410B (zh) * 2005-07-07 2013-05-29 鲁尔沃伊尔有限公司 具有耐磨损管板内衬的管束式热交换器

Also Published As

Publication number Publication date
DE4012045A1 (de) 1991-10-17
DE59101753D1 (de) 1994-07-07
EP0451507B1 (fr) 1994-06-01

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