EP0253167B1 - Echangeur de chaleur, en particulier évaporateur pour réfrigérant - Google Patents

Echangeur de chaleur, en particulier évaporateur pour réfrigérant Download PDF

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Publication number
EP0253167B1
EP0253167B1 EP87109108A EP87109108A EP0253167B1 EP 0253167 B1 EP0253167 B1 EP 0253167B1 EP 87109108 A EP87109108 A EP 87109108A EP 87109108 A EP87109108 A EP 87109108A EP 0253167 B1 EP0253167 B1 EP 0253167B1
Authority
EP
European Patent Office
Prior art keywords
pipe
flat
pipes
widened
region
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.)
Expired
Application number
EP87109108A
Other languages
German (de)
English (en)
Other versions
EP0253167A1 (fr
Inventor
Dieter Dipl.-Ing. Bauer
Wolfgang Hesse
Werner Oelichmann
Herbert Schrade
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
Priority to AT87109108T priority Critical patent/ATE43707T1/de
Publication of EP0253167A1 publication Critical patent/EP0253167A1/fr
Application granted granted Critical
Publication of EP0253167B1 publication Critical patent/EP0253167B1/fr
Expired legal-status Critical Current

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Classifications

    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F28D1/05358—Assemblies of conduits connected side by side or with individual headers, e.g. section type radiators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15—Making tubes of special shape; Making tube fittings
    • B21C37/22—Making finned or ribbed tubes by fixing strip or like material to tubes
    • 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
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/08—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/025—Tubular elements of cross-section which is non-circular with variable shape, e.g. with modified tube ends, with different geometrical features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/12—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by creating turbulence, e.g. by stirring, by increasing the force of circulation
    • 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
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0221—Header boxes or end plates formed by stacked elements
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • F28D2021/0071—Evaporators

Definitions

  • the invention relates to a heat exchanger, in particular a refrigerant evaporator according to the preamble of claim 1.
  • Heat exchangers of this type have already been proposed by the applicant's older DE application P 35 02 619.7.
  • Heat exchangers of this type have the advantage that, in contrast to heat exchangers with disk-shaped heat exchange bodies, the flat tubes do not have to be soldered or glued over their entire length, but only at their ends and at the connection openings, so that a significant simplification of manufacture can be achieved. Since in the proposed designs the flat tubes lie directly against one another with widened end parts, the arrangement of separate connecting tube sockets is also superfluous.
  • each flat tube extends to the narrow longitudinal sides in the shape of an ogive to the bends on the longitudinal edges of the flat tube, so that it is then possible to extend the widened part over the entire tube width .
  • Due to the pointed arch-shaped extension of the expansion towards the end regions the pipe material is stretched less there than in the middle of the parallel pipe walls. Overstretching with the risk of crack formation is therefore avoided.
  • This configuration then makes it possible in a simple manner to insert turbulence inserts with the width of the flat tubes axially into the open tubes and then to fix them in a known manner. It is also advantageous that no deformation occurs in the narrow end areas, where the weld seam is generally located. This measure enables a higher heat exchange performance compared to pipes in which the turbulence insert does not fill the full pipe width.
  • the expanded part extends only over part of the width of the flat tubes, but then a certain trick must be provided to provide the full-width turbulence insert in the flat tube.
  • the turbulence insert is first inserted in a zigzag-shaped corrugated shape into the central region of an oval tube and that this tube is then pressed in parallel and permanently deformed in the region in which the turbulence insert is seated to an extent that the turbulence insert presses out of its corrugated shape into a flat, elongated shape.
  • the flat tube is therefore only finished after inserting a turbulence insert.
  • This method has proven to be very beneficial. It has the advantage that the turbulence insert used in this way is also fixed in the flat tube after the deformation of the plate-shaped central part of the initially oval tube.
  • FIG. 1 to 3 show a heat exchanger (1) which is constructed from a plurality of flat tubes (2) which are placed directly next to one another and with their axes (5) aligned parallel to one another.
  • the flat tubes (2) are placed next to one another with widened parts (2a, 2b) provided at the ends and take up heat exchange fins (3) between them, which for better heat dissipation of the in the drawing plane in Fig. 1 on the flat tubes (2nd ) flowing past serve a heat exchange medium, especially air.
  • the widened part (2a) or (2b) of the flat tubes (2) is closed in the exemplary embodiment by caps (10) inserted on the end face. These caps are in the lower two tubes of FIG. 3rd omitted. It can be seen that the middle part (2c) of the flat tubes (2) is considerably narrower than the widened part (2a) and that the flat tubes provided with parallel walls have bends (8) in the area of their longitudinal edges, each of which extends into the parallel walls ( 4) pass over. It can also be seen from the figures that the widened part (2a) or analogously (2b) has openings (6, 6 ') in the parallel wall parts (4').
  • Fig. 2 shows that the parallel walls (4 ') of the expanded part (2a) run approximately in the area between the boundary lines (11) and that from these boundary lines to the outside, where less material is deformed by the ogival shape, expedient end wall parts (12) which run obliquely outwards remain, while in the area between the boundary lines (11) there is a lower lying area.
  • This configuration ensures that even in the middle area, ie. H. in the area of the walls (4 ') the material stretch can be kept within the permissible range.
  • FIG. 4 to 7 show another embodiment of a flat tube for a refrigerant evaporator, which is also provided with a turbulence insert (70), but is produced in a different way.
  • the end regions of a flat tube are not widened, but instead, as the upper part of FIG. 4, a tube (20 ') with an oval cross section is selected as the starting material, the walls (40) of which are at a distance (b) from one another .
  • This oval tube has the length (B ').
  • a turbulence insert (70 ') in corrugated or zigzag shape is now inserted into an oval tube (20') designed in this way.
  • This turbulence insert (70 ') has an overall length which is dimensioned such that it corresponds to the length (B) of the deformed part after the deformation of the tube (20') described below.
  • This turbulence insert (70 ') with the length (B) is therefore, as the upper part of FIG. 4 shows, first inserted axially into the tube (20), to the extent that it occupies the area (21) (see FIG 5 and 6), which is then to be deformed. Once this has been done, this central region (21) is pressed together by rolling or pressing, in such a way that in this region the tube (20 ') receives the thickness (d) and the width (B).
  • This flat tube (20) designed in this way therefore has widened end regions which do not have the full width (B).
  • the turbulence insert (70) over the full length of the width (B), which, due to the deformation process, both assumes its extended position according to FIG. 4 and is secured axially in this position.
  • the parts (20a) and (20b) remaining as a result of this deformation process and widened with respect to the region (21) can be provided with openings similar to the openings (6) of the embodiment in FIGS. 1 to 3. In the exemplary embodiment, however, they are each provided with two openings (60) and (60 '), which, when placed one against the other, establish the connection between the individual flat tubes (20).
  • outlets (61) projecting outward at the openings (60) are produced, for example, by a suitable stamping process.
  • This embodiment then has the advantage that only one type of flat tube (20) is required to build a flat tube evaporator or flat tube heat exchanger, which are soldered to one another.
  • the nozzles (61) are dimensioned so that they fit into the openings (60 ').
  • the open pipe ends are closed by inserted caps (10).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)

Claims (7)

1. Echangeur de chaleur, notamment évaporateur pour réfrigérant, se composant de plusieurs tubes plats parallèles, espacés cependant gun de l'autre, reliés entre eux, entre lesquels sont disposées un grand nombre d'ailettes pour augmenter la surface d'échange de chaleur, et qui sont pourvus dans leurs deux zones extrêmes d'une partie élargie de la paroi tubulaire afin de s'appliquer par cette partie directement contre une partie correspondante du tube adjacent et d'être reliés à celui-ci, notamment par soudure, des ouvertures de liaison, ménagées dans chaque partie élargie perpendiculairement à l'axe longitudinal des tubes plats, étant prévues pour assurer la liaison avec un tube plat adjacent ou un groupe de tubes adjacent, caractérisé en ce que la partie élargie (2a, 2b) de chaque tube plat (2) s'étend sur toute la largeur du tube, en étant cependant orientée vers les côtés longitudinaux étroits (2') avec une forme d'ogive pour rejoindre les coudes (8) du tube plat (2), et en ce qu'il est prévu dans la zone (2c, 21) de chaque tube plat (2, 20) qui est située entre les parties élargies (2a, 2b, 20a, 20b) de la paroi tubulaire 4, des inserts générateurs de turbulence (7, 70) qui remplissent toute la largeur de tube (B).
2. Echangeur de chaleur selon la revendication 1, caractérisé en ce que la zone de la partie élargie (2a, 2b) qui rejoint les coudes (8) est réalisée avec une forme légèrement incurvée.
3. Echangeur de chaleur selon la revendication 1, caractérisé en ce que la paroi de la partie élargie (2a, 2b) est orientée, dans une zone de transition (9) avec les parois parallèles (4') du tube à peu près perpendiculairement à celles-ci.
4. Echangeur de chaleur, notamment évaporateur pour réfrigérant, se composant de plusieurs tubes plats parallèles, espacés cependant l'un de l'autre, reliés entre eux, entre lesquels sont disposées un grand nombre d'ailettes pour augmenter la surface d'échange de chaleur, et qui sont pourvus dans leurs deux zones extrêmes d'une partie élargie de la paroi tubulaire afin de s'appliquer par cette partie directement contre une partie correspondante du tube adjacent et d'être reliés à celui-ci, notamment par soudure, des ouvertures de liaison, ménagées dans chaque partie élargie perpendiculairement à l'axe longitudinal des tubes plats, étant prévues pour assurer la liaison avec un tube plat adjacent ou un groupe de tubes adjacent, caractérisé en ce que la partie élargie (20a) correspond à la section droite d'un tube oval (20'), dont la paroi tubulaire (40) est comprimée, dans une zone (21) située entre les extrémités élargies (20a, 20b) jusqu'à un petit espacement (d), et en ce que, dans la zone comprimée, il est prévu des inserts générateurs de turbulence (70), qui sont engagés dans le tube (20') avant sa compression et qui occupent toute la largeur de la zone comprimée.
5. Echangeur de chaleur selon la revendication 4, caractérisé en ce que la partie élargie (20a) du tube plat (20) ne s'étend que sur une partie de la largeur (B) des tubes plats (20).
6. Procédé de fabrication d'un échangeur de chaleur selon la revendication 1, caractérisé en ce qu'initialement les extrémités (2a, 2b) du tube plat sont élargies et en ce qu'ensuite l'insert générateur de turbulence (7) est engagé axialement en position.
7. Procédé de fabrication d'un échangeur de chaleur selon la revendication 1, caractérisé en ce que l'insert générateur de turbulence (70) est engagé avec une forme ondulée (70') dans la zone centrale (21) du tube ovel (20') et en ce que le tube (20') est ensuite comprimé parallèlement dans la zone (21) dans laquelle se trouve l'insert générateur de turbulence (70') et est pourvu d'une déformation permanente jusqu'à ce que l'insert générateur de turbulence (70') et est pourvu d'une déformation permanente jusqu'à ce que l'insert générateur de turbulence (70') soit comprimé de la forme ondulée jusque dans une forme allongée plane.
EP87109108A 1986-07-09 1987-06-24 Echangeur de chaleur, en particulier évaporateur pour réfrigérant Expired EP0253167B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87109108T ATE43707T1 (de) 1986-07-09 1987-06-24 Waermetauscher, insbesondere kaeltemittelverdampfer.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3622953 1986-07-09
DE19863622953 DE3622953A1 (de) 1986-07-09 1986-07-09 Waermetauscher, insbesondere kaeltemittel-verdampfer

Publications (2)

Publication Number Publication Date
EP0253167A1 EP0253167A1 (fr) 1988-01-20
EP0253167B1 true EP0253167B1 (fr) 1989-05-31

Family

ID=6304670

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87109108A Expired EP0253167B1 (fr) 1986-07-09 1987-06-24 Echangeur de chaleur, en particulier évaporateur pour réfrigérant

Country Status (5)

Country Link
EP (1) EP0253167B1 (fr)
JP (1) JPH0739914B2 (fr)
AT (1) ATE43707T1 (fr)
DE (2) DE3622953A1 (fr)
ES (1) ES2008864B3 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3900744A1 (de) * 1989-01-12 1990-07-26 Sueddeutsche Kuehler Behr Waermetauscher
JPH0346757U (fr) * 1989-08-29 1991-04-30
FR2715216B1 (fr) * 1994-01-20 1996-02-16 Valeo Thermique Moteur Sa Tube d'échangeur de chaleur, procédé pour sa conformation et échangeur de chaleur comprenant de tels tubes.
FR2715217B1 (fr) * 1994-01-20 1996-03-01 Valeo Thermique Moteur Sa Tube d'échangeur de chaleur, en particulier pour véhicule automobile, procédé pour sa conformation et échangeur de chaleur comprenant de tels tubes.
DE19543986A1 (de) 1995-11-25 1997-05-28 Behr Gmbh & Co Wärmetauscher und ein Verfahren zur Herstellung eines Wärmetauschers
IT1291636B1 (it) * 1997-04-22 1999-01-19 Whirlpool Co Scambiatore di calore modulare particolarmente per macchine asciugabiancheria lavaasciugabiancheria e simili
DE19722097A1 (de) * 1997-05-27 1998-12-03 Behr Gmbh & Co Wärmeübertrager sowie Wärmeübertrageranordnung für ein Kraftfahrzeug
DE19723878B4 (de) * 1997-06-06 2007-10-25 Behr Gmbh & Co. Kg Wärmeübertrager
DE10138247A1 (de) * 2001-08-03 2003-02-13 Behr Gmbh & Co Wärmetauscheranordnung
CN106839854A (zh) * 2017-01-26 2017-06-13 上海宝丰机械制造有限公司 换热管及包括其的蒸发式冷凝器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2345331A (en) * 1942-04-18 1944-03-28 Morris Motors Ltd Heat interchange apparatus
DE2747275A1 (de) * 1977-10-21 1979-04-26 Volkswagenwerk Ag Waermetauscher, insbesondere leichtmetall-waermetauscher
US4269265A (en) * 1979-11-29 1981-05-26 Modine Manufacturing Company Tubular heat exchanger with turbulator
DE8126746U1 (de) * 1981-09-14 1982-02-25 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart Flachrohrwaermetauscher mit turbulenzeinlage
DE3502619A1 (de) * 1985-01-26 1986-07-31 Süddeutsche Kühlerfabrik Julius Fr. Behr GmbH & Co KG, 7000 Stuttgart Waermetauscher, insbesondere kaeltemittel-verdampfer

Also Published As

Publication number Publication date
JPS6317391A (ja) 1988-01-25
ATE43707T1 (de) 1989-06-15
DE3760214D1 (en) 1989-07-06
DE3622953A1 (de) 1988-01-21
EP0253167A1 (fr) 1988-01-20
ES2008864B3 (es) 1989-08-16
JPH0739914B2 (ja) 1995-05-01

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