EP1058807B1 - Wärmetauscher mit biegsamen rohren - Google Patents

Wärmetauscher mit biegsamen rohren Download PDF

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Publication number
EP1058807B1
EP1058807B1 EP99961164A EP99961164A EP1058807B1 EP 1058807 B1 EP1058807 B1 EP 1058807B1 EP 99961164 A EP99961164 A EP 99961164A EP 99961164 A EP99961164 A EP 99961164A EP 1058807 B1 EP1058807 B1 EP 1058807B1
Authority
EP
European Patent Office
Prior art keywords
tubes
exchanger according
rows
sinusoids
exchanger
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 - Lifetime
Application number
EP99961164A
Other languages
English (en)
French (fr)
Other versions
EP1058807A1 (de
Inventor
Carlos Manuel Martins
Laurence Marechal
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
Priority claimed from FR9816560A external-priority patent/FR2787872B1/fr
Application filed by Valeo Thermique Moteur SA filed Critical Valeo Thermique Moteur SA
Publication of EP1058807A1 publication Critical patent/EP1058807A1/de
Application granted granted Critical
Publication of EP1058807B1 publication Critical patent/EP1058807B1/de
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
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
    • F28F21/062—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material the heat-exchange apparatus employing tubular conduits
    • 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
    • F28D1/047—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 bent, e.g. in a serpentine or zig-zag
    • F28D1/0477—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 bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
    • 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
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
    • F28F9/0137—Auxiliary supports for elements for tubes or tube-assemblies formed by wires, e.g. helically coiled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2240/00—Spacing means
    • 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

Definitions

  • the present invention relates to the field of heat exchangers. heat, especially for cooling systems motor vehicle engines. It concerns more particularly flexible tube heat exchangers, for example made of plastic.
  • Such heat exchangers include tubes made of a material substantially flexible and the ends of which communicate with at least one manifold of a heat exchange fluid, cooperating for example with an air flow which crosses the exchanger.
  • the present invention then improves the situation.
  • a flexible tube heat exchanger which, according to a general characteristic of the invention, means for holding the tubes in rows substantially parallel.
  • the tubes are shaped for present general shapes of lines substantially sinusoidal.
  • the sinusoids of two tubes in contact, of two respective consecutive rows are noticeably offset between them, one part relative to the other, so that the two tubes are maintained in two contact zones per period sinusoids.
  • the sinusoids of the respective tubes of two consecutive rows are substantially in opposition to phase, while the sinusoids of the same row are in phase.
  • the contact areas of the respective tubes of consecutive rows are substantially inscribed in a plan perpendicular to the rows.
  • the spacing between the rows is substantially constant.
  • At least part of the outer surface of the tubes, comprising the aforementioned contact areas, is coated with a layer glue to form means for holding the tubes.
  • the outer surfaces of the tubes carry a rendered material adhesive by vulcanization treatment, thus forming the aforementioned glue layer.
  • the holding means further comprise a plurality of stems substantially perpendicular to the rows and implanted each between the respective sinusoids of consecutive rows, to hold the tubes in consecutive rows significantly apart.
  • Such a device comprises in a manner known per se a group motor-fan 1 provided with a plurality of blades.
  • the group motor fan 1 is usually placed behind the vehicle grille (not shown).
  • a heat exchanger heat according to the invention is interposed in an air flow (arrows F) produced by the rotation of the blades of the motor-fan unit 1, or even the movement of the vehicle itself.
  • the heat exchanger is supplied with liquid engine cooling, usually under control of a thermostatic valve 3.
  • the arrangement of such a valve in the coolant circuit 4 allows generally obtain satisfactory engine performance during its cold start, by cutting the power to the radiator.
  • FIG. 2 we now refer to Figure 2 to describe the structure of the heat exchanger 2 (cooling radiator, in the example).
  • This heat exchanger has flexible tubes 20 (represented by hatching in the figure 2), generally made of a plastic material, which communicate at their ends with two manifolds 21 and 22.
  • the manifolds are provided openings 215 and 225 tightly accommodating the ends of the tubes 20.
  • the boxes have plates collectors provided with openings 215 and 225, and which form thus means for holding the tubes, in particular for their ends.
  • the manifolds 25 and 22 usually have compartments 250, 251, 252 and 221, 222, separated by partitions 253, 254 and 223, respectively, to define a path of the aforementioned heat exchange fluid ( cooling in the example described), between an input C (arrow E) which communicates with an inlet conduit 23 and a outlet (arrow S) which communicates with an evacuation pipe 24.
  • the boxes collectors have a total of five compartments and the heat exchange fluid performs a total of three routes "outward" and two "return" routes from the manifold 21 to the manifold 22.
  • the paths of the fluid between the two manifolds 21 and 22 are then provided by the tubes 20, in which circulates the fluid. So the tubes cooperate thermally with the air flow F. However, to optimize the exchange on the one hand, between the tubes 20 and the air flow F, on the other hand, it is necessary to maintain the tubes significantly apart from each other to create gaps between them.
  • the tubes 20 of the exchanger are arranged in horizontal rows 20A in the example described ( Figure 3E). These rows are substantially mutually parallel and spaced, in the example described, from a distance corresponding substantially to a tube thickness 20, so that the different rows are substantially adjacent by respective pairs of tubes two consecutive rows, substantially in contact with each other.
  • the tubes generally have general shapes substantially sinusoidal.
  • the tubes 211, 212 of the same row 20A have their sinusoid substantially in phase.
  • two tubes 211, 212 in contact, of two consecutive rows, respectively, are in opposition to phase and are in contact on areas 210 corresponding to nodes of the two sinusoids.
  • FIG. 3C represents a sectional view (section plane of the tubes) of the nodes of the aforementioned sinusoids.
  • the tubes of a same row 20A are appreciably separated from each other, since the sinusoids in the same row are in phase, while the tubes of two consecutive rows are in contact at the level 210 zones (sinusoid nodes).
  • Figure 3D is a sectional view (section plane of the tubes) bellies formed by the sinusoids of the row tubes consecutive. It then appears a gap between two tubes of two consecutive rows, respectively, since the sinusoids of the two tubes are in phase opposition of a row 20A to the next, consecutive.
  • the contact areas 210 between the tubes of consecutive rows are inscribed in substantially horizontal planes, while rows 20A are arranged in substantially vertical planes. So the contact areas 210 of the respective tubes of consecutive rows are substantially inscribed in perpendicular planes in rows 20A.
  • the tubes are made of a material plastic made adhesive by heat treatment. So, after heat treatment, the tubes are mechanically connected to each other by gluing, in their contact zones 210. Alternatively, it can be provided to coat the surfaces outer tubes of a material having such property, or a layer of glue to form the aforementioned holding means. In particular, points of glue arranged on the contact areas 210 are sufficient to maintain the tubes in rows 20A, and substantially fixed the relative to each other. It should be noted that the openings manifolds are themselves arranged in rows and columns to immediately hold the ends of the tubes in rows.
  • FIGS. 4A to 4C describe the arrangement of the tubes of a heat exchanger according to a second embodiment of the present invention.
  • the tubes of the same row 20A form sinusoids substantially in phase, while tubes of two consecutive rows form sinusoids in opposite phase.
  • rods 213 substantially parallel to each other and perpendicular to rows 20A. Each of these rods is inserted into the bellies formed by the sinusoids of the row tubes consecutive, as shown in Figure 4B. Such rods 213 thus make it possible to maintain the tubes substantially discarded in consecutive rows. Consequently, he it is not necessary to provide an adhesive coating on the tubes, in particular on the contact areas 210.
  • the flexible tubes of the exchanger are so general of small diameter, typically about 1 to 4 mm and with a wall thickness close to 0.2 mm. It is then desired to maintain the tubes in a substantially rigid structure by their arrangement in sinusoids described above, with a view to protect against constraints of use (vibrations, material aging, fluid pressure heat exchange, etc.) which tend to weaken them.
  • a another advantage of the present invention is then in that the tubes are fixedly held together by compared to others.
  • the period of the sinusoids is located in a range of 40 to 80 mm and their amplitude, compared to a general axis of the tube, is between half a diameter of tube and two tube diameters.
  • the ends of the tubes are contiguous and flat over a length of about 5 to 25 mm, to be able to be connected to the manifold, while the total length tubes is, for example, of the order of 500 mm.
  • the adjacent tubes of two consecutive rows are not necessarily in phase opposition. Indeed, just phase shift the two sinusoids to leave penetrate an air flow between the tubes.
  • the arrangement of the two opposite phase sinusoids allows a maximum penetration of the air flow by the bellies they form.
  • the rows are substantially horizontal, while the contact areas 210 are arranged substantially in vertical planes. More general, these planes are not necessarily perpendicular in rows, especially if the adjacent tubes between consecutive rows are laterally offset by one row to the other.
  • the exchanger 2 comprises two manifolds.
  • a manifold provided with openings may be provided into which the ends of the tubes, while each tube has a "U" shape whose the two branches are wavy and inscribed in the same row, or intertwined, while each branch of "U" is entered in a separate row.
  • the heat exchanger described above as example is intended to operate as a heat sink motor vehicle cooling.
  • this heat exchanger can be provided as a heat sink heating housed in a hot air branch of an installation ventilation, heating and / or air conditioning of the passenger compartment of the vehicle, or even as an evaporator of a loop of air conditioning of this installation, or other.
  • the fluid passing through the heat exchanger air flow F in the example described above

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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)

Claims (11)

  1. Wärmeaustauscher, insbesondere einer Kühlanlage eines Kraftfahrzeugmotors, der Art, eine Vielzahl die Rohren (20) umfasst, die aus einem im Wesentlichen weichen Material hergestellt sind und dazu bestimmt sind, ein Wärmeaustauschfluid zu befördern, das geeignet ist, mit einem Fluss an Fluid (F) zusammenzuwirken, das den Austauscher durchquert,
    dadurch gekennzeichnet, dass er Mittel umfasst, um die Rohre in im Wesentlichen parallelen Reihen (20A) zu halten und dadurch, dass die Rohre (20) so geformt werden, dass sie Grundformen im Wesentlichen sinusförmiger Linien aufweisen, wobei die Sinuslinien von zwei miteinander in Kontakt stehenden Rohren (211, 212) von zwei jeweiligen aufeinander folgenden Reihen zueinander im Wesentlichen phasenverschoben sind, so dass die zwei Rohre pro Sinusperiode in zwei Kontaktbereichen (210) gehalten werden.
  2. Austauscher nach Anspruch 1, dadurch gekennzeichnet, dass die Sinuslinien der jeweiligen Rohre (211, 212) von zwei aufeinander folgenden Reihen im Wesentlichen in entgegengesetzter Phase sind, während die Sinuslinien einer selben Reihe (20A) in Phase sind.
  3. Austauscher nach Anspruch 2, dadurch gekennzeichnet, dass die Kontaktbereiche (210) der jeweiligen Rohre von aufeinander folgenden Reihen sich im Wesentlichen in einer zu den Reihen senkrechten Ebene befinden.
  4. Austauscher nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Abstand zwischen den Reihen (20A) im Wesentlichen konstant ist.
  5. Austauscher nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass mindestens ein Teil der Außenflächen der Rohre, umfassend die Kontaktbereiche (210), mit einer Klebemittelschicht überzogen ist, um Mittel zum Halten der Rohre zu bilden.
  6. Austauscher nach Anspruch 5, dadurch gekennzeichnet, dass die Außenflächen der Rohre (20) ein Material aufweisen, das durch eine Wärmebehandlung haftend gemacht wurde.
  7. Austauscher nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Mittel zum Halten eine Vielzahl von Stäben (213) aufweisen, welche im Wesentlichen senkrecht zu den Reihen (20A) angeordnet sind und von denen jeder zwischen den jeweiligen Sinuslinien von aufeinander folgenden Reihen positioniert ist, um die Rohre (211, 212) der aufeinander folgenden Reihen im Wesentlichen beabstandet zu halten.
  8. Austauscher nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass er mindestens ein Sammelgehäuse (25, 22) aufweist, das mit Öffnungen (215, 225) versehen ist, welche jeweils mit einem Ende eines Rohres verbunden und so angeordnet sind, dass sie die Enden der Rohre eng aufnehmen, wodurch Mittel zum Halten der Enden der Rohre gebildet werden.
  9. Austauscher nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Sinusperiode zwischen 40 und 80 mm umfasst.
  10. Austauscher nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Amplitude der Sinuslinien im Verhältnis zu einer Rohrhauptachse (20) zwischen einem halben Rohrdurchmesser und zwei Rohrdurchmessern liegt.
  11. Austauscher nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Enden der Rohre (20) auf einer Länge von ungefähr 5 bis 25 mm aneinanderstoßend und flach sind.
EP99961164A 1998-12-29 1999-12-23 Wärmetauscher mit biegsamen rohren Expired - Lifetime EP1058807B1 (de)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
FR9816560A FR2787872B1 (fr) 1998-12-29 1998-12-29 Echangeur de chaleur a tubes souples, en particulier pour une installation de refroidissement d'un moteur de vehicule automobile
FR9816560 1998-12-29
FR9906223A FR2787873B1 (fr) 1998-12-29 1999-05-17 Echangeur de chaleur a tubes souples, en particulier pour une installation de refroidissement d'un moteur de vehicule automobile
FR9906223 1999-05-17
PCT/FR1999/003277 WO2000039517A1 (fr) 1998-12-29 1999-12-23 Echangeur de chaleur a tubes souples

Publications (2)

Publication Number Publication Date
EP1058807A1 EP1058807A1 (de) 2000-12-13
EP1058807B1 true EP1058807B1 (de) 2003-03-12

Family

ID=26234743

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99961164A Expired - Lifetime EP1058807B1 (de) 1998-12-29 1999-12-23 Wärmetauscher mit biegsamen rohren

Country Status (6)

Country Link
US (1) US6390187B1 (de)
EP (1) EP1058807B1 (de)
JP (1) JP2002533655A (de)
DE (1) DE69905862T2 (de)
FR (1) FR2787873B1 (de)
WO (1) WO2000039517A1 (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002156127A (ja) * 2000-11-17 2002-05-31 Toyox Co Ltd 熱交換器
US7171956B2 (en) * 2002-08-28 2007-02-06 T. Rad Co., Ltd. EGR cooler
US7042981B2 (en) * 2002-10-11 2006-05-09 General Electric Co. X-ray tube window and surrounding enclosure cooling apparatuses
US6796453B2 (en) 2002-11-13 2004-09-28 Stan A. Sanders Cellular reservoir flexible pressure vessel, apparatus and method for making same
US6804976B1 (en) * 2003-12-12 2004-10-19 John F. Dain High reliability multi-tube thermal exchange structure
EP2092259B1 (de) * 2006-11-15 2017-03-22 MAHLE Behr GmbH & Co. KG Wärmeübertrager für kraftfahrzeug mit stranggepresstem gekrümmten strömungskanal
US8534346B1 (en) 2006-11-16 2013-09-17 Climatecraft Technologies, Inc. Flexible heat exchanger
US7621148B1 (en) 2007-08-07 2009-11-24 Dain John F Ultra-low temperature bio-sample storage system
US7823394B2 (en) * 2007-11-02 2010-11-02 Reflect Scientific, Inc. Thermal insulation technique for ultra low temperature cryogenic processor
JP2013145066A (ja) * 2012-01-13 2013-07-25 Panasonic Corp 熱交換器
CN105744805A (zh) * 2016-04-15 2016-07-06 周哲明 一种多通道组合水冷板

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Publication number Priority date Publication date Assignee Title
US824493A (en) * 1905-11-25 1906-06-26 D Mcra Livingston Cooler.
FR406177A (fr) * 1909-08-17 1910-01-24 Eugene Heffner Radiateur démontable
US1302111A (en) * 1917-05-31 1919-04-29 Thomas M Wilder Automobile-radiator and method of construction.
US1399146A (en) * 1919-04-17 1921-12-06 Naujoks Rudolph Radiator
FR529761A (fr) * 1921-01-12 1921-12-06 Radiateur pour automobiles
US2161019A (en) * 1937-06-28 1939-06-06 Joseph A Coy Heat exchanger
US3419069A (en) * 1967-04-28 1968-12-31 Du Pont Heat transfer apparatus having flexible plastic tubular elements arranged in a braided configuration
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US4589481A (en) * 1982-06-29 1986-05-20 Ab Zander & Ingestrom Tube heat exchanger
US4846977A (en) * 1986-10-21 1989-07-11 The Dow Chemical Company Method and device for separating polar from non-polar liquids using membranes
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US6119769A (en) * 1998-08-05 2000-09-19 Visteon Global Technologies, Inc. Heat transfer device

Also Published As

Publication number Publication date
WO2000039517A1 (fr) 2000-07-06
US6390187B1 (en) 2002-05-21
JP2002533655A (ja) 2002-10-08
FR2787873B1 (fr) 2001-07-06
DE69905862D1 (de) 2003-04-17
FR2787873A1 (fr) 2000-06-30
EP1058807A1 (de) 2000-12-13
DE69905862T2 (de) 2003-12-11

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