EP0964218A2 - Heat exchanger with flat finned tubes, more particularly radiator,cooler,condenser or evaporator for automotive vehicle - Google Patents

Heat exchanger with flat finned tubes, more particularly radiator,cooler,condenser or evaporator for automotive vehicle Download PDF

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Publication number
EP0964218A2
EP0964218A2 EP99109324A EP99109324A EP0964218A2 EP 0964218 A2 EP0964218 A2 EP 0964218A2 EP 99109324 A EP99109324 A EP 99109324A EP 99109324 A EP99109324 A EP 99109324A EP 0964218 A2 EP0964218 A2 EP 0964218A2
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EP
European Patent Office
Prior art keywords
collector
flat
flat tubes
heat exchanger
tube
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
EP99109324A
Other languages
German (de)
French (fr)
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EP0964218A3 (en
EP0964218B1 (en
Inventor
Roland Haussmann
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 Klimatechnik GmbH and Co KG
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Valeo Klimatechnik GmbH and Co KG
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Publication of EP0964218A2 publication Critical patent/EP0964218A2/en
Publication of EP0964218A3 publication Critical patent/EP0964218A3/en
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Publication of EP0964218B1 publication Critical patent/EP0964218B1/en
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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
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • F28F9/0204—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions
    • F28F9/0209—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions
    • F28F9/0212—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only transversal partitions the partitions being separate elements attached to header boxes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/0072—Special adaptations
    • F24H1/009—Special adaptations for vehicle systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F24H3/0435—Structures comprising heat spreading elements in the form of fins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/06—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
    • F24H3/08—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes
    • F24H3/081—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes using electric energy supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/06—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
    • F24H3/08—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes
    • F24H3/081—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes using electric energy supply
    • F24H3/085—The tubes containing an electrically heated intermediate fluid, e.g. water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863—Arrangement or mounting of electric heating means
    • F24H9/1872—PTC
    • 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
    • F28D1/03—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 plate-like or laminated conduits
    • F28D1/0308—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other
    • F28D1/035—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 plate-like or laminated conduits the conduits being formed by paired plates touching each other with U-flow or serpentine-flow inside the 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
    • F28D1/03—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 plate-like or laminated conduits
    • F28D1/0391—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 plate-like or laminated conduits a single plate being bent to form one or more 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
    • F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
    • F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
    • 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
    • F28F9/0202—Header boxes having their inner space divided by partitions
    • 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
    • F28F9/0224—Header boxes formed by sealing end plates into covers
    • 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
    • F28F9/026—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits
    • F28F9/0263—Header boxes; End plates with static flow control means, e.g. with means for uniformly distributing heat exchange media into conduits by varying the geometry or cross-section of header box

Definitions

  • the invention relates to a heat exchanger, in particular heating heat exchangers, engine coolers, condensers or evaporator, for motor vehicles, with ribbed flat tubes, with the further features of the preamble of claim 1.
  • the invention has for its object such multifunctional arrangement for motor vehicles regarding Material, manufacturing and in particular space requirements at least further optimize for certain applications.
  • the sub-claims 2 to 6 relate to preferred Developments of the invention.
  • a Block of flat tubes 2 arranged parallel to one another is provided, which is a common ribbing by zigzag slats 4 have at least on the flat sides of the flat tubes 2 connect.
  • a corresponding one can also Ribbing 4a on the outer flat side of each outer flat tube 2 may be provided to which an outer side end plate 6 connects.
  • All of the exemplary embodiments also have in common that a group of flat tubes 2 communicates with a collector 8, which in two parts from a tube sheet 10 and a Lid 12 is assembled.
  • the tube sheet has insertion slots 14 each for a free end with that Collector 10 communicating flat tubes 2.
  • the Flat tubes are double-flow.
  • the in the direction of flow of the inner heat exchange fluid first flood 16 runs in counterflow within the flat tube to the second flood 18, being between the two floods 16 and 18 a partition 20 is formed within the flat tube 2 is.
  • the arrow 22 in FIGS. 1 and 2 illustrates the flow reversal of the two floods within the flat tube.
  • the lid 12 of the collector 8 is in turn through an intermediate wall 24 in an entrance-side section 26 and an outlet-side section 28 divided.
  • the input side Department 26 has a side inlet 30 provided on the lid 12 and communicates within the collector 8 with the first flood 16.
  • the exit section 28 also points to one side of the cover 12, here without Limitation of generality on the same side, one Return 32 of the internal heat exchange fluid and communicates within the collector 8 with the respective second Flood 18th
  • Fig. 1 shows that in any case the partition 24 in the collector 8 can have tongues 34, which in along the tube plate 10th extending grooves or slots 36 can engage.
  • all parts are made preferably made of aluminum or an aluminum alloy, such as e.g. AlMn1, and are hard with each other sealing the respective partitions soldered.
  • collector 8a and 8b arranged in the area of both ends of the flat tubes 2, where both collectors of different types one internal heat exchange fluids are applied.
  • the different Species can differ chemically in particular be. But you can also consider only one Internal heat exchange fluid parameters differ too choose how about the operating temperature.
  • successive flat tubes 2 alternately communicating connected to the collector 8a or to the collector 8b.
  • connection sequence can also be in another Rhythm. So you can instead of alternating 3 without restriction of generality one connection to only one flat tube with one Connection to a parallel connection of two flat tubes switch. Any other assignment of individual and / or group connections here is within the scope of the invention also possible.
  • FIG. 2 The diversion of the floods can be complete or partially done in the flat tube 2 itself, as this two alternatives in FIG. 2 on the one hand and in FIGS. 4 and 5 on the other hand is shown.
  • FIG. 2 The intended representation of Fig. 2 can also be figurative recognize such an embodiment, in which on End of the relevant flat tube 2, the partition 20 completely is omitted.
  • this partition 20 can also openings 46 for flow connection analogous to FIG. 4 and Fig. 5 may be formed, here a number of two Openings is shown, but in their place also one single opening as a number of more than two openings 46 can kick.
  • FIG. 2, FIG. 4 and FIG. 5 instead show an end termination of the respective flat tube 2 by a separate cup-shaped element 48.
  • Whose Arrangement gives the possibility of a redirection of the Flooding in the flat tube itself can even be avoided entirely instead the deflection in the cup-shaped in question Element 48 exclusively. But you can also take a hybrid form between the two embodiments which the deflection partially within the flat tube and partially made within the cup-shaped element is.
  • Preferred and in the context of the representation is the Arrangement in which the deflection is only in the flat tube takes place and the relevant cup-shaped element 48 only for Front end of the relevant flat tube 2 is provided is.
  • this is Cup-shaped element 48 at a free end of the relevant one Flat tube 2 put over.
  • Fig. 4 shows the in this case Peculiarity that the cup-shaped element 48 between the free end of the relevant flat tube 2 and the tube sheet 10 of the spatially following collector 8 or 8a or 8b clamped is, so that also by this clamping hard soldering between the respective free end of the flat tube 2 and the tube sheet 10 can be done.
  • 5 shows in contrast a variant in which on the separate training and Arrangement of the cup-shaped part 48 is dispensed with and its Function by appropriate cup-shaped training of Rohrêt 10 is taken over.

Abstract

The vehicle heat exchanger assembly has ribbed flat tubes (2) with collectors (8a,8b) connected to the tube interiors, with one collector at each end of the tubes. The flat tubes (2) alternate, singly or in groups, with one end at a collector (8a), and the other end at the other collector (8b), using different heat exchange fluids. Each collector (8a,8b) has an inflow (30) and a backflow (32) for each of the fluids. The ends of the flat tubes (2), away from the collectors (8a,8b), have a U-shaped flow deflection (22).

Description

Die Erfindung bezieht sich auf einen Wärmetauscher, insbesondere Heizungswärmetauscher, Motorkühler, Verflüssiger oder Verdampfer, für Kraftfahrzeuge, mit verrippten Flachrohren, mit den weiteren Merkmalen des Oberbegriffs von Anspruch 1.The invention relates to a heat exchanger, in particular heating heat exchangers, engine coolers, condensers or evaporator, for motor vehicles, with ribbed flat tubes, with the further features of the preamble of claim 1.

Bei derartigen Wärmetauschern ist es üblich (vgl. z.B. US 5174373), je einen Sammler im Bereich beider Enden der verrippten Flachrohre anzuordnen und dabei ein inneres Wärmetauschfluid der Flachrohre von dem einen Sammler her durch den jeweiligen Rohrinnenraum der Flachrohre zum anderen Sammler zu leiten.With such heat exchangers, it is common (cf. e.g. US 5174373), one collector in the area of both ends to arrange the ribbed flat tubes and thereby an inner Flat tube heat exchange fluid from one collector through the respective tube interior of the flat tubes to the other To direct collectors.

Es ist auch schon bekannt (vgl. z.B. DE 44 46 817 A1), nur einen mit Zulauf und Rücklauf versehenen Sammler zu verwenden, an den das jeweilige verrippte Flachrohr mit seinem Rohrinnenraum mehrflutig angeschlossen ist, wobei die Enden der Flachrohre, welche dem Sammler abgewandt sind, mit einer Umlenkeinrichtung für die Fluten versehen sind.It is also already known (see e.g. DE 44 46 817 A1), only one collector provided with inlet and return use to which the respective ribbed flat tube with its The interior of the pipe is connected to multiple pipes, with the ends the flat tubes, which face away from the collector, with a deflection device for the floods are provided.

Schließlich ist es z. B. von der Kombination eines Wasserkühlers eines Motorkühlkreislaufs und eines Verflüssigers einer Kraftfahrzeugklimaanlage, einem Motorölkühler oder einem Ladeluftkühler bekannt, von verschiedenen inneren Wärmetauschfluiden beaufschlagte Wärmetauscher in Strömungsrichtung des äußeren Wärmetauschfluids, bei Kraftfahrzeugen meist der Umgebungsluft, hintereinander oder nebeneinander anzuordnen(DE-G 91 11 412.8 U1). Eine solche multifunktionelle Anordnung erfordert neben dem baulichen Aufwand für mehrere Wärmetauscher, der sich insbesondere in Material- und Fertigungskosten äußert, auch für deren Anordnung einen relativ großen Raumbedarf, der gerade bei Anordnung in Kraftfahrzeugen besonders kritisch ist.Finally, it is e.g. B. from the combination of one Water cooler of an engine cooling circuit and a condenser a motor vehicle air conditioner, an engine oil cooler or a charge air cooler known from various internal heat exchange fluids acted upon heat exchanger in the flow direction of the external heat exchange fluid, mostly in motor vehicles the ambient air, one after the other or next to each other (DE-G 91 11 412.8 U1). Such a multifunctional In addition to the construction effort, arrangement requires several Heat exchanger, which is particularly in material and manufacturing costs expresses a relative for their arrangement large space requirement, especially when arranged in motor vehicles is particularly critical.

Der Erfindung liegt die Aufgabe zugrunde, eine solche multifunktionelle Anordnung für Kraftfahrzeuge hinsichtlich Material-, Fertigungs- und insbesondere Raumaufwand mindestens für bestimmte Anwendungsfälle weiter zu optimieren.The invention has for its object such multifunctional arrangement for motor vehicles regarding Material, manufacturing and in particular space requirements at least further optimize for certain applications.

Diese Aufgabe wird durch die Wärmetauscher mit den Merkmalen von Anspruch 1 gelöst. Hierbei werden die Funktionen von zwei Wärmetauschern mit Beaufschlagbarkeit durch zwei verschiedene innere Wärmetauschfluide in einem einzigen Wärmetauscher integriert. Die angestrebte Optimierung ist dann besonders günstig erreicht, wenn die beiden unterschiedlichen Wärmetauschfunktionen in zeitlicher Folge nutzbar gemacht werden, wobei dann die Verrippung der Flachrohre, die für die momentane Wärmetauschfunktion nicht gebraucht wird, die Verrippung der für die momentane Wärmetauschfunktion aktiven Flachrohre für den Wärmetausch mit dem äußeren Wärmetauschfluid ergänzt. In diesem Fall kann es sogar ausreichen, die gesamte Verrippung des Wärmetauschers nur nach der einen Wärmetauschfunktion auszulegen, die eine maximale äußere Wärmetauschfläche benötigt. Im Grenzfall kann man also sogar die äußere Verrippung gegenüber den bekannten einzelnen Wärmetauschern halbieren. In jedem Fall braucht bei der Fertigung nur ein einziger Wärmetauschertyp für mehrere Funktionen hergestellt und bei der Montage im Kraftfahrzeug angeordnet zu werden, was zu erheblichen Einsparungen an Material, Herstellungskosten und Montagekosten führt. Auch der erforderliche Einbauraum im Kraftfahrzeug kann im obigen Zusammenhang minimal gehalten werden.This task is performed by the heat exchangers Features of claim 1 solved. Here are the functions of two heat exchangers that can be acted upon by two different internal heat exchange fluids in a single heat exchanger integrated. The desired optimization is then achieved particularly favorably if the two different Heat exchange functions can be used in chronological order be, then the ribbing of the flat tubes, which for the current heat exchange function is not needed, the Ribbing those active for the current heat exchange function Flat tubes for heat exchange with the external heat exchange fluid added. In this case, it may even be enough the entire ribbing of the heat exchanger only after one Heat exchange function to design a maximum external Heat exchange area needed. In the borderline case, you can even the outer ribbing compared to the known individual Halve heat exchangers. In any case, the Manufacturing only one type of heat exchanger for multiple functions manufactured and arranged during assembly in the motor vehicle to become, resulting in significant material savings, Manufacturing costs and assembly costs leads. Also the required installation space in the motor vehicle can in the above context be kept to a minimum.

Die Unteransprüche 2 bis 6 betreffen bevorzugte Weiterbildungen der Erfindung.The sub-claims 2 to 6 relate to preferred Developments of the invention.

Die Erfindung wird im folgenden anhand schematischer Zeichnungen an mehreren Ausführungsbeispielen noch näher erläutert. Es zeigen:

  • Fig. 1 eine Draufsicht in Richtung der Strömung von Umgebungsluft als äußerem Wärmetauschfluid auf eine Ausbildungsform eines Wärmetauschers nach Anspruch 1 in teilweise geschnittener und teilweise Explosionsdarstellung;
  • Fig. 2 eine funktionelle Ansicht eines einzelnen Flachrohres mit weggelassener Verrippung;
  • Fig. 3 eine funktionelle Ansicht eines Wärmetauschers gemäß Fig. 1; sowie die
  • Fig. 4 und 5 Teilschnitte eines Wärmetauschers gemäß Fig. 1 in Längsrichtung der Flachrohre mit Darstellung unterschiedlicher Arten des Endabschlusses an den Enden der Flachrohre, die ihrem Sammler abgewandt sind.
    • The invention is explained in more detail below with the aid of schematic drawings using several exemplary embodiments. Show it:
  • Figure 1 is a plan view in the direction of the flow of ambient air as an external heat exchange fluid on an embodiment of a heat exchanger according to claim 1 in a partially sectioned and partially exploded view.
  • Figure 2 is a functional view of a single flat tube with the ribs omitted.
  • FIG. 3 shows a functional view of a heat exchanger according to FIG. 1; as well as the
  • 4 and 5 partial sections of a heat exchanger according to FIG. 1 in the longitudinal direction of the flat tubes with representation of different types of end termination at the ends of the flat tubes which face away from their collector.

    • Bei allen dargestellten Wärmetauschern ist ein Block aus parallel zueinander angeordneten Flachrohren 2 vorgesehen, die eine gemeinsame Verrippung durch Zickzacklamellen 4 aufweisen, die mindestens an die Flachseiten der Flachrohre 2 anschließen. Zusätzlich kann auch noch eine entsprechende Verrippung 4a an der äußeren Flachseite eines jeweils außen liegenden Flachrohres 2 vorgesehen sein, an die ein äußeres seitliches Abschlußblech 6 anschließt.In all heat exchangers shown is a Block of flat tubes 2 arranged parallel to one another is provided, which is a common ribbing by zigzag slats 4 have at least on the flat sides of the flat tubes 2 connect. In addition, a corresponding one can also Ribbing 4a on the outer flat side of each outer flat tube 2 may be provided to which an outer side end plate 6 connects.

    Allen Ausführungsbeispielen ist weiter gemeinsam, daß eine Gruppe von Flachrohren 2 mit einem Sammler 8 kommuniziert, welcher zweiteilig aus einem Rohrboden 10 und einem Deckel 12 zusammengesetzt ist. Der Rohrboden weist Einsteckschlitze 14 jeweils für ein freies Ende der mit dem betreffenden Sammler 10 kommunizierenden Flachrohre 2 auf. Die Flachrohre sind dabei zweiflutig ausgebildet. Die in Strömungsrichtung des inneren Wärmetauschfluids erste Flut 16 verläuft dabei im Gegenstrom innerhalb des Flachrohres zu der zweiten Flut 18, wobei zwischen den beiden Fluten 16 und 18 eine Trennwand 20 innerhalb des Flachrohres 2 ausgebildet ist. Der Pfeil 22 in den Fig. 1 und 2 veranschaulicht dabei die Strömungsumkehr der beiden Fluten innerhalb des Flachrohres.All of the exemplary embodiments also have in common that a group of flat tubes 2 communicates with a collector 8, which in two parts from a tube sheet 10 and a Lid 12 is assembled. The tube sheet has insertion slots 14 each for a free end with that Collector 10 communicating flat tubes 2. The Flat tubes are double-flow. The in the direction of flow of the inner heat exchange fluid first flood 16 runs in counterflow within the flat tube to the second flood 18, being between the two floods 16 and 18 a partition 20 is formed within the flat tube 2 is. The arrow 22 in FIGS. 1 and 2 illustrates the flow reversal of the two floods within the flat tube.

    Der Deckel 12 des Sammlers 8 ist seinerseits durch eine Zwischenwand 24 in eine eingangsseitige Abteilung 26 und eine ausgangsseitige Abteilung 28 unterteilt. Die eingangsseitige Abteilung 26 ist dabei mit einem seitlichen Zulauf 30 am Deckel 12 versehen und kommuniziert innerhalb des Sammlers 8 mit der ersten Flut 16. Die ausgangsseitige Abteilung 28 weist ebenfalls an der einen Seite des Deckels 12, hier ohne Beschränkung der Allgemeinheit an derselben Seite, einen Rücklauf 32 des inneren Wärmetauschfluids auf und kommuniziert innerhalb des Sammlers 8 mit der jeweiligen zweiten Flut 18.The lid 12 of the collector 8 is in turn through an intermediate wall 24 in an entrance-side section 26 and an outlet-side section 28 divided. The input side Department 26 has a side inlet 30 provided on the lid 12 and communicates within the collector 8 with the first flood 16. The exit section 28 also points to one side of the cover 12, here without Limitation of generality on the same side, one Return 32 of the internal heat exchange fluid and communicates within the collector 8 with the respective second Flood 18th

    Ohne auf Einzelheiten der Bauart des betreffenden Sammlers 8 weiter eingehen zu wollen, ist zusätzlich in Fig. 1 dargestellt, daß jedenfalls die Zwischenwand 24 im Sammler 8 Zungen 34 aufweisen kann, welche in längs des Rohrbodens 10 verlaufende Nuten oder Schlitze 36 eingreifen können.Without going into details of the type of construction in question Wanting to go into collector 8 further is additionally in Fig. 1 shown that in any case the partition 24 in the collector 8 can have tongues 34, which in along the tube plate 10th extending grooves or slots 36 can engage.

    Bei der beschriebenen Bauweise bestehen alle Teile vorzugsweise aus Aluminium oder einer Aluminiumlegierung, wie z.B. AlMn1, und sind miteinander hart unter Abdichtung der jeweiligen Trennwände verlötet.In the construction described, all parts are made preferably made of aluminum or an aluminum alloy, such as e.g. AlMn1, and are hard with each other sealing the respective partitions soldered.

    Bei der Ausführungsart der Fig. 1 ist je ein Sammler 8a und 8b im Bereich beider Enden der Flachrohre 2 angeordnet, wobei beide Sammler von unterschiedlichen Arten eines inneren Wärmetauschfluids beaufschlagt sind. Die unterschiedlichen Arten können dabei insbesondere chemisch unterschiedlich sein. Man kann aber auch in Betracht ziehen, nur einen Parameter des inneren Wärmetauschfluids unterschiedlich zu wählen, wie etwa die Betriebstemperatur.1 is a collector 8a and 8b arranged in the area of both ends of the flat tubes 2, where both collectors of different types one internal heat exchange fluids are applied. The different Species can differ chemically in particular be. But you can also consider only one Internal heat exchange fluid parameters differ too choose how about the operating temperature.

    Bei der Ausführungsform gemäß Fig. 1 sind dabei aufeinander folgende Flachrohre 2 abwechselnd kommunizierend an den Sammler 8a oder an den Sammler 8b angeschlossen.In the embodiment according to FIG. 1 are included successive flat tubes 2 alternately communicating connected to the collector 8a or to the collector 8b.

    Diese Anschlußfolge kann jedoch auch in einem anderen Rhythmus erfolgen. So kann man etwa statt des abwechselnden Anschlusses gemäß Fig. 3 ohne Beschränkung der Allgemeinheit jeweils einen Anschluß an nur ein Flachrohr mit einem Anschluß jeweils an eine Parallelschaltung von zwei Flachrohren wechseln. Jede andere Zuordnung von einzelnen und/oder gruppenweisen Anschlüssen ist hierbei im Rahmen der Erfindung auch möglich.However, this connection sequence can also be in another Rhythm. So you can instead of alternating 3 without restriction of generality one connection to only one flat tube with one Connection to a parallel connection of two flat tubes switch. Any other assignment of individual and / or group connections here is within the scope of the invention also possible.

    Aufbau und Anschlußweise der beiden Sammler 8a und 8b gemäß Fig. 1 sind dabei gleichartig, so daß der Sammler 8b nicht gesondert beschrieben zu werden braucht.Structure and connection of the two collectors 8a and 1 are identical, so that the collector 8b need not be described separately.

    Wiederum ohne Beschränkung der Allgemeinheit beschreiben die Fig. 3, 4 und 5 drei besonders bevorzugte Ausführungsformen der Ausbildung und Anordnung der von einem inneren Wärmetauschfluid beaufschlagten Flachrohre 2 im Umlenkungsbereich der Fluten.Describe again without restricting generality 3, 4 and 5 three particularly preferred embodiments the formation and arrangement of an inner Heat exchange fluid acted on flat tubes 2 in the deflection area of the floods.

    Die Umlenkung der Fluten kann dabei vollständig oder teilweise im Flachrohr 2 selbst erfolgen, wie dies an zwei Alternativen in Fig. 2 einerseits und in Fig. 4 und 5 andererseits dargestellt ist. In der in erster Linie schematisch gemeinten Darstellung von Fig. 2 kann man auch gegenständlich eine solche Ausführungsform erkennen, bei der am Ende des betreffenden Flachrohres 2 die Trennwand 20 ganz fortgelassen ist. Alternativ kann diese Trennwand 20 auch mit zur Strömungsverbindung dienenden Öffnungen 46 analog Fig. 4 und Fig. 5 ausgebildet sein, wobei hier eine Anzahl von zwei Öffnungen dargestellt ist, an deren Stelle jedoch ebenso eine einzelne Öffnung wie eine Anzahl von mehr als zwei Öffnungen 46 treten kann.The diversion of the floods can be complete or partially done in the flat tube 2 itself, as this two alternatives in FIG. 2 on the one hand and in FIGS. 4 and 5 on the other hand is shown. In the first place schematically The intended representation of Fig. 2 can also be figurative recognize such an embodiment, in which on End of the relevant flat tube 2, the partition 20 completely is omitted. Alternatively, this partition 20 can also openings 46 for flow connection analogous to FIG. 4 and Fig. 5 may be formed, here a number of two Openings is shown, but in their place also one single opening as a number of more than two openings 46 can kick.

    Wenn die Umlenkung zwischen den beiden Fluten ausschließlich analog Fig. 2 oder Fig. 4 bzw. 5 innerhalb des Flachrohres erfolgt, reicht es aus, das betreffende Flachrohr an dem Ende, welches nicht mit seinem Sammler 8 kommuniziert, einfach abzuschließen, z.B. durch Zusammenklemmen und Hartverlöten. Die Ausführungsformen gemäß Fig. 2, Fig. 4 und Fig. 5 zeigen stattdessen einen Endabschluß des jeweiligen Flachrohres 2 durch ein gesondertes napfförmiges Element 48. Dessen Anordnung gibt die Möglichkeit, auf eine Umlenkung der Fluten im Flachrohr selbst sogar ganz zu verzichten und stattdessen die Umlenkung in dem betreffenden napfförmigen Element 48 ausschließlich vorzunehmen. Man kann aber auch eine Mischform zwischen beiden Ausführungsformen nehmen, bei denen die Umlenkung teilweise innerhalb des Flachrohres und teilweise innerhalb des napfförmigen Elementes vorgenommen ist. Bevorzugt und im Rahmen der Darstellung gemeint ist die Anordnung, bei der die Umlenkung ausschließlich im Flachrohr erfolgt und das betreffende napfförmige Element 48 nur zum stirnseitigen Abschluß des betreffenden Flachrohres 2 vorgesehen ist.If the redirection between the two floods exclusively analog to Fig. 2 or Fig. 4 or 5 within the Flat tube takes place, it is sufficient, the relevant flat tube at the end that does not communicate with its collector 8, easy to complete, e.g. by clamping and brazing. The embodiments according to FIG. 2, FIG. 4 and FIG. 5 instead show an end termination of the respective flat tube 2 by a separate cup-shaped element 48. Whose Arrangement gives the possibility of a redirection of the Flooding in the flat tube itself can even be avoided entirely instead the deflection in the cup-shaped in question Element 48 exclusively. But you can also take a hybrid form between the two embodiments which the deflection partially within the flat tube and partially made within the cup-shaped element is. Preferred and in the context of the representation is the Arrangement in which the deflection is only in the flat tube takes place and the relevant cup-shaped element 48 only for Front end of the relevant flat tube 2 is provided is.

    Bei der Ausführungsform gemäß Fig. 2 ist das napfförmige Element 48 an einem freien Ende des betreffenden Flachrohres 2 übergestülpt. Fig. 4 zeigt für diesen Fall die Besonderheit, daß das napfförmige Element 48 zwischen dem freien Ende des betreffenden Flachrohres 2 und dem Rohrboden 10 des räumlich nachfolgenden Sammlers 8 bzw. 8a bzw. 8b eingeklemmt ist, so daß auch durch diese Einklemmung eine Hartverlötung zwischen dem jeweiligen freien Ende des Flachrohres 2 und dem Rohrboden 10 erfolgen kann. Fig. 5 zeigt demgegenüber eine Variante, bei der auf die gesonderte Ausbildung und Anordnung des napfförmigen Teils 48 verzichtet wird und dessen Funktion durch entsprechende napfförmige Ausbildung des Rohrbodens 10 mit übernommen wird.In the embodiment according to FIG. 2, this is Cup-shaped element 48 at a free end of the relevant one Flat tube 2 put over. Fig. 4 shows the in this case Peculiarity that the cup-shaped element 48 between the free end of the relevant flat tube 2 and the tube sheet 10 of the spatially following collector 8 or 8a or 8b clamped is, so that also by this clamping hard soldering between the respective free end of the flat tube 2 and the tube sheet 10 can be done. 5 shows in contrast a variant in which on the separate training and Arrangement of the cup-shaped part 48 is dispensed with and its Function by appropriate cup-shaped training of Rohrboden 10 is taken over.

    Schließlich ist in Fig. 2 dargestellt, daß im Rahmen der Erfindung vorzugsweise solche Flachrohre 2 Anwendung finden, die aus einem Flachmaterial so gefaltet sind, daß bei der Faltung auch die Trennwand 20 des Flachrohres mit gewonnen wird. Dies wird besonders deutlich an der in Fig. 2 links ersichtlichen Schnittführung durch das freie Ende des betreffenden Flachrohres 2, wo die Trennwand 20 von einer Endzone des ursprünglichen Flachmaterials mit gebildet wird.Finally, it is shown in Fig. 2 that in the frame the invention preferably such flat tubes 2 application find that are folded from a flat material so that at the folding also won the partition 20 of the flat tube becomes. This is particularly evident on the left in FIG. 2 apparent cut through the free end of the concerned Flat tube 2 where the partition 20 from an end zone of the original flat material is formed.

    Claims (6)

    Wärmetauscher, insbesondere Heizungswärmetauscher, Motorkühler, Verflüssiger oder Verdampfer, für Kraftfahrzeuge, mit verrippten Flachrohren (2), deren Rohrinnenraum (38) jeweils von einem inneren Wärmetauschfluid beaufschlagt ist, welches mit dem Rohrinnenraum (38) über Sammler (8a,8b) kommuniziert, von denen ein erster Sammler (8a) im Bereich der ersten Enden und ein zweiter Sammler (8b) im Bereich der zweiten Enden der Flachrohre (2) angeordnet ist,
       dadurch gekennzeichnet, daß die Flachrohre (2) in einzelner oder gruppenweiser Folge abwechselnd an ihren ersten Enden von dem ersten Sammler (8a) und an ihren zweiten Enden von dem zweiten Sammler (8b) aus von ihrem inneren Wärmetauschfluid beaufschlagbar sind, daß der erste Sammler (8a) mit Zulauf (30) und Rücklauf (32) eines ersten und der zweite Sammler (8b) mit Zulauf (30) und Rücklauf (32) eines vom ersten verschiedenen zweiten Wärmetauschfluids ausgebildet ist, und daß die Enden der Flachrohre (2), die ihrem Sammler (8a,8b) abgewandt sind, mit einer U-förmigen Strömungsumkehr (22) im Flachrohr (2) versehen sind.     Heat exchangers, in particular heating heat exchangers, engine coolers, condensers or evaporators, for motor vehicles, with ribbed flat tubes (2), the tube interior (38) of which is in each case acted upon by an internal heat exchange fluid which communicates with the tube interior (38) via collectors (8a, 8b), of which a first collector (8a) is arranged in the region of the first ends and a second collector (8b) in the region of the second ends of the flat tubes (2),
    characterized, that the flat tubes (2) can be acted upon alternately at their first ends by the first header (8a) and at their second ends by the second header (8b) from their internal heat exchange fluid, in individual or group order, that the first collector (8a) with inlet (30) and return (32) of a first and the second collector (8b) with inlet (30) and return (32) of a different from the first heat exchange fluid is formed, and that the ends of the flat tubes (2), which face away from their collector (8a, 8b), are provided with a U-shaped flow reversal (22) in the flat tube (2).     Wärmetauscher nach Anspruch 1, dadurch gekennzeichnet, daß für die Strömungsumkehr (22) eine Umkehrvorrichtung (48) an das freie Ende des Flachrohres (2) angesetzt ist.Heat exchanger according to claim 1, characterized characterized in that for the flow reversal (22) Reversing device (48) to the free end of the flat tube (2) is scheduled. Wärmetauscher nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß für die Strömungsumkehr (22) mindestens eine Öffnung (46) in der Trennwand (20) zwischen gegenläufigen benachbarten Fluten (16,18) desselben Flachrohres (2) vorgesehen ist und jenseits der Strömungsumkehr (22) das Ende des Flachrohres (2) geschlossen ausgebildet ist.Heat exchanger according to claim 1 or 2, characterized characterized in that for the flow reversal (22) at least an opening (46) in the partition (20) between opposing adjacent floods (16, 18) of the same flat tube (2) is provided and beyond the flow reversal (22) End of the flat tube (2) is closed. Wärmetauscher nach Anspruch 3, gekennzeichnet durch von den Flachrohren (2) gesonderte Endverschlüsse (48) für die Enden der Flachrohre.Heat exchanger according to claim 3, characterized by of the flat tubes (2) separate end closures (48) for the ends of the flat tubes. Wärmetauscher nach Anspruch 4, gekennzeichnet durch Verschlußkappen (42) und/oder Verschlußstopfen.Heat exchanger according to claim 4, characterized by Caps (42) and / or plugs. Wärmetauscher nach Anspruch 4 oder 5, dadurch gekennzeichnet, daß die Endverschlüsse (42) im Rohrboden (10) eines Sammlers (8) mit ausgebildet sind, der für die Beaufschlagung anderer Flachrohre (2) mit innerem Wärmetauschfluid vorgesehen ist.Heat exchanger according to claim 4 or 5, characterized in that the end closures (42) in the tube sheet (10) a collector (8) are also trained to act on the other flat tubes (2) with internal heat exchange fluid is provided.
    EP99109324A 1998-06-08 1999-05-28 Heat exchanger with flat finned tubes, more particularly radiator,cooler,condenser or evaporator for automotive vehicle Expired - Lifetime EP0964218B1 (en)

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    DE19825561 1998-06-08
    DE19825561A DE19825561A1 (en) 1998-06-08 1998-06-08 Heat exchangers with ribbed flat tubes, in particular heating heat exchangers, engine coolers, condensers or evaporators, for motor vehicles

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    BR9901800A (en) 2000-03-14
    EP0964218A3 (en) 2000-08-30
    DE19825561A1 (en) 1999-12-09
    US6328100B1 (en) 2001-12-11
    EP0964218B1 (en) 2004-01-07
    DE59908225D1 (en) 2004-02-12
    ES2213943T3 (en) 2004-09-01

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