EP1577630A2 - Heat exchanger for the cooling system of an automotive vehicle - Google Patents

Heat exchanger for the cooling system of an automotive vehicle Download PDF

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Publication number
EP1577630A2
EP1577630A2 EP20050004391 EP05004391A EP1577630A2 EP 1577630 A2 EP1577630 A2 EP 1577630A2 EP 20050004391 EP20050004391 EP 20050004391 EP 05004391 A EP05004391 A EP 05004391A EP 1577630 A2 EP1577630 A2 EP 1577630A2
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EP
European Patent Office
Prior art keywords
coolant
hollow body
pressure
heat exchanger
box
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP20050004391
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German (de)
French (fr)
Inventor
Gunther Hentschel
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 EP1577630A2 publication Critical patent/EP1577630A2/en
Withdrawn legal-status Critical Current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
    • F28F9/0231—Header boxes having an expansion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
    • F28F2265/12—Safety or protection arrangements; Arrangements for preventing malfunction for preventing overpressure

Definitions

  • the invention relates to a heat exchanger of a coolant circuit of a motor vehicle according to the preamble of claim 1 - known by the DE-C 30 38 487 of the applicant.
  • Coolant circuits of motor vehicles are primarily used for engine cooling and secondarily the heating of the vehicle interior.
  • the coolant circuit Therefore, has a cooling circuit with a coolant radiator and a parallel heating circuit with a heating heat exchanger on which the heat of the coolant to the vehicle interior supplied ambient air.
  • the refrigerant an incompressible liquid Medium
  • the refrigerant pump is promoted by a coolant pump, some are also arranged electrical auxiliary pumps in the coolant circuit.
  • the coolant circuit various valves, such as thermostatic valves in the cooling circuit and switching or control valves in the heating circuit.
  • Such a Coolant circuit leads to significant pressure fluctuations during operation and pressure peaks, which the individual components in the coolant circuit heavy burden.
  • a pressure connection led to the outside is provided is.
  • the pressure level in the hollow body adjustable is, d. H. the damping and suspension rate can be adjusted to the respective Operating conditions are adjusted.
  • the hollow body has at least one partially elastic trained wall and is made of rubber, plastic or metal, e.g. As aluminum produced, can thus also in Ganzaluminiumkühler be soldered.
  • the hollow body forming a printing poster is in one Coolant cooler, in the coolant inlet box arranged.
  • This provides the advantage that pressure surges when entering the coolant damped in the coolant box and thereby damage the coolant radiator be avoided.
  • Another advantage is that a possible expansion tank, which represents another component of the coolant circuit, can be reduced in volume.
  • Fig. 1 shows the upper part of a coolant radiator 1, not shown completely with a coolant box 2, which is preferably made of plastic and connected to a metallic tube sheet 3.
  • the coolant radiator 1 further comprises tubes 4 through which coolant flows and which are tightly received in the tube plate 3 with their tube ends. Between the tubes 4, not shown corrugated fins are arranged, which are traversed by air.
  • the coolant radiator 1 is connected to a coolant circuit, not shown, of an internal combustion engine of a motor vehicle.
  • an elongated hollow body 5 is arranged with a pressure connection pipe 6, which is guided through a wall 2a of the coolant box 2 and sealed against the wall 2a.
  • the hollow body 5 has an elastic wall, for. B.
  • the coolant box 2 shows a cross section through the coolant box 2 and the hollow body 5, which here has an approximately elliptical, that is also adapted to the shape of the coolant box 2 cross-section.
  • the coolant-carrying tubes 4 are formed as flat tubes, between which the corrugated fins, not shown, are arranged, which form a brazed radiator block with the flat tubes.
  • the coolant box 2 is the inlet box for the coolant in the radiator 1 and therefore has a coolant inlet nozzle, not shown here.
  • the elastic pressure vessel 5 thus leads to a damping of pressure surges when entering the coolant in the coolant box 2.
  • the rigid per se designed coolant radiator 1, in particular the coolant box 2 and the connection between the tube sheet 3 and the coolant tank 2 are relieved.
  • the coolant radiator also produced as all-metal, in particular all-aluminum coolers become.
  • the hollow body according to the invention is in this case too made of aluminum with elastically formed container wall and can thus be soldered in the metallic coolant box.

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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)

Abstract

The heat exchanger has at least one coolant box (2) containing a gas-field hollow body (5) with pressure damping of pressure and absorbing properties. The hollow body has a pressure connection (6) led outside it. The pressure connection may be in the form of the tube, connected to the interior of the hollow body, and passing through a wall (2a) of the box.

Description

Die Erfindung betrifft einen Wärmeübertrager eines Kühlmittelkreislaufes eines Kraftfahrzeuges nach dem Oberbegriff des Patentanspruches 1 - bekannt durch die DE-C 30 38 487 der Anmelderin.The invention relates to a heat exchanger of a coolant circuit of a motor vehicle according to the preamble of claim 1 - known by the DE-C 30 38 487 of the applicant.

Kühlmittelkreisläufe von Kraftfahrzeugen dienen primär der Motorkühlung und sekundär der Beheizung des Fahrzeuginnenraumes. Der Kühlmittelkreislauf weist daher einen Kühlkreislauf mit einem Kühlmittelkühler und einen parallel geschalteten Heizungskreislauf mit einem Heizungswärmeübertrager auf, welcher die Wärme des Kühlmittels an dem Fahrzeuginnenraum zugeführte Umgebungsluft abgibt. Das Kühlmittel, ein inkompressibles flüssiges Medium, wird von einer Kühlmittelpumpe gefördert, teilweise sind auch elektrische Zusatzpumpen im Kühlmittelkreislauf angeordnet. Ferner weist der Kühlmittelkreislauf verschiedene Ventile, wie Thermostatventile im Kühlkreislauf und Schalt- oder Regelventile im Heizungskreislauf auf. Ein solcher Kühlmittelkreislauf führt im Betrieb zu erheblichen Druckschwankungen und Druckspitzen, welche die einzelnen Komponenten im Kühlmittelkreislauf stark belasten.Coolant circuits of motor vehicles are primarily used for engine cooling and secondarily the heating of the vehicle interior. The coolant circuit Therefore, has a cooling circuit with a coolant radiator and a parallel heating circuit with a heating heat exchanger on which the heat of the coolant to the vehicle interior supplied ambient air. The refrigerant, an incompressible liquid Medium, is promoted by a coolant pump, some are also arranged electrical auxiliary pumps in the coolant circuit. Further points the coolant circuit various valves, such as thermostatic valves in the cooling circuit and switching or control valves in the heating circuit. Such a Coolant circuit leads to significant pressure fluctuations during operation and pressure peaks, which the individual components in the coolant circuit heavy burden.

In der DE-C 30 38 487 der Anmelderin wurde daher bereits ein gasgefüllter Hohlkörper mit druckdämpfenden und/oder druckabsorbierenden Eigenschaften vorgeschlagen, und zwar insbesondere für einen Heizungswärmeübertrager. Eine Ausführungsform des bekannten Hohlkörpers ist als gasgefüllter, verschlossener Gummi- oder Kunststoffschlauch ausgebildet, welcher im Wasserkasten des Heizungswärmeübertragers angeordnet ist. Der Hohlkörper weist elastische Wände oder eine elastische Membran auf, über welche die Druckstöße abgefedert bzw. gedämpft werden. Nachteilig bei dem bekannten geschlossenen Hohlkörper ist, dass der Druck im Hohlkörper konstant bleibt oder sich lediglich mit der Umgebungstemperatur ändert.In DE-C 30 38 487 of the Applicant has therefore already a gas-filled Hollow body with pressure-damping and / or pressure-absorbing properties proposed, in particular for a heating heat exchanger. An embodiment of the known hollow body is as gas-filled, formed closed rubber or plastic tube, which is arranged in the water tank of Heizungswärmeübertragers. Of the Hollow body has elastic walls or an elastic membrane over which the pressure surges are cushioned or damped. A disadvantage of the known closed hollow body is that the pressure in the hollow body remains constant or changes only with the ambient temperature.

Es ist Aufgabe der vorliegenden Erfindung, einen Wärmeübertrager der eingangs genannten Art hinsichtlich seiner druckdämpfenden und/oder druckabsorbierenden Eigenschaften zu verbessern.It is an object of the present invention to provide a heat exchanger of the initially mentioned type with respect to its pressure-damping and / or pressure-absorbing To improve properties.

Diese Aufgabe wird durch die Merkmale des Patenanspruches 1 gelöst, wobei erfindungsgemäß ein nach außen geführter Druckanschluss vorgesehen ist. Damit wird der Vorteil erreicht, dass das Druckniveau im Hohlkörper einstellbar ist, d. h. die Dämpfungs- und Federungsrate kann an die jeweiligen Betriebsbedingungen angepasst werden. Der Hohlkörper weist eine zumindest teilweise elastisch ausgebildete Wand auf und ist aus Gummi, Kunststoff oder Metall, z. B. Aluminium herstellbar, kann somit auch in Ganzaluminiumkühler eingelötet werden.This object is solved by the features of claim 1, wherein According to the invention, a pressure connection led to the outside is provided is. Thus, the advantage is achieved that the pressure level in the hollow body adjustable is, d. H. the damping and suspension rate can be adjusted to the respective Operating conditions are adjusted. The hollow body has at least one partially elastic trained wall and is made of rubber, plastic or metal, e.g. As aluminum produced, can thus also in Ganzaluminiumkühler be soldered.

Vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen. Vorzugsweise ist der ein Druckposter bildende Hohlkörper in einem Kühlmittelkühler, und zwar in dessen Kühlmitteleintrittskasten angeordnet. Damit wird der Vorteil erreicht, dass Druckstöße beim Eintritt des Kühlmittels in den Kühlmittelkasten gedämpft und dadurch Schäden am Kühlmittelkühler vermieden werden. Von Vorteil ist ferner, dass ein etwaiger Ausgleichsbehälter, der eine weitere Komponente des Kühlmittelkreislaufes darstellt, in seinem Volumen reduziert werden kann.Advantageous embodiments of the invention will become apparent from the dependent claims. Preferably, the hollow body forming a printing poster is in one Coolant cooler, in the coolant inlet box arranged. This provides the advantage that pressure surges when entering the coolant damped in the coolant box and thereby damage the coolant radiator be avoided. Another advantage is that a possible expansion tank, which represents another component of the coolant circuit, can be reduced in volume.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im Folgenden näher beschrieben. Es zeigen

Fig. 1
einen Längsschnitt durch einen Kühlmittelkasten eines KühlmittelKühlers und
Fig. 2
einen Querschnitt durch den Kühlmittelkasten gemäß Fig. 1.
An embodiment of the invention is illustrated in the drawing and will be described in more detail below. Show it
Fig. 1
a longitudinal section through a coolant box of a KühlmittelKühlers and
Fig. 2
a cross section through the coolant box of FIG. 1st

Fig. 1 zeigt den oberen Teil eines vollständig nicht dargestellten Kühlmittelkühlers 1 mit einem Kühlmittelkasten 2, welcher vorzugsweise aus Kunststoff hergestellt und mit einem metallischen Rohrboden 3 verbunden ist. Der Kühlmittelkühler 1 weist ferner von Kühlmittel durchstömte Rohre 4 auf, die mit ihren Rohrenden im Rohrboden 3 dicht aufgenommen sind. Zwischen den Rohren 4 sind nicht dargestellte Wellrippen angeordnet, welche von Luft durchströmt werden. Der Kühlmittelkühler 1 ist an einen nicht dargestellten Kühlmittelkreislauf einer Brennkraftmaschine eines Kraftfahrzeuges angeschlossen. Im oberen Teil des Kühlmittelkastens 2 ist ein länglich ausgebildeter Hohlkörper 5 mit einem Druckanschlussrohr 6 angeordnet, welches durch eine Wand 2a des Kühlmittelkastens 2 geführt und gegenüber der Wand 2a abgedichtet ist. Der Hohlkörper 5 weist eine elastische Wandung auf, z. B. aus Kunststoff oder Gummi und ist mit Druckgas gefüllt, welches über den Druckanschluss 6 von außen zuführbar ist. Damit ist es auch möglich, das Druckniveau in dem elastischen Behälter 5 einzustellen bzw. beliebig zu verändern, d. h. auch während des Betriebes des Kühlmittelkühlers 1. Unterhalb des Hohlkörpers 5 sind die Querschnitte von Rippen 7 erkennbar (vgl. Fig. 2). Fig. 1 shows the upper part of a coolant radiator 1, not shown completely with a coolant box 2, which is preferably made of plastic and connected to a metallic tube sheet 3. The coolant radiator 1 further comprises tubes 4 through which coolant flows and which are tightly received in the tube plate 3 with their tube ends. Between the tubes 4, not shown corrugated fins are arranged, which are traversed by air. The coolant radiator 1 is connected to a coolant circuit, not shown, of an internal combustion engine of a motor vehicle. In the upper part of the coolant box 2, an elongated hollow body 5 is arranged with a pressure connection pipe 6, which is guided through a wall 2a of the coolant box 2 and sealed against the wall 2a. The hollow body 5 has an elastic wall, for. B. plastic or rubber and is filled with compressed gas, which is supplied via the pressure port 6 from the outside. Thus, it is also possible to adjust the pressure level in the elastic container 5 or to change any, ie even during operation of the coolant radiator 1. Below the hollow body 5, the cross sections of ribs 7 can be seen (see Fig .. 2).

Fig. 2 zeigt einen Querschnitt durch den Kühlmittelkasten 2 und den Hohlkörper 5, welcher hier einen annähernd elliptischen, d. h. auch an die Form des Kühlmittelkastens 2 angepassten Querschnitt aufweist. An den Kühlmittelkasten 2 sind nach innen ragende Rippen 7 angeformt, welche den elastischen Druckbehälter 5 stützen, d. h. in seiner oberen Lage unterhalb der Wandung 2a positionieren, damit ein hinreichender freier Strömungsquerschnitt für das Kühlmittel erhalten bleibt. Die das Kühlmittel führenden Rohre 4 sind als Flachrohre ausgebildet, zwischen welchen die nicht dargestellten Wellrippen angeordnet sind, welche mit den Flachrohren einen gelöteten Kühlerblock bilden. Der Kühlmittelkasten 2 ist der Eintrittskasten für das Kühlmittel in den Kühler 1 und weist daher einen hier nicht dargestellten Kühlmitteleintrittsstutzen auf. Der elastische Druckbehälter 5 führt somit zu einer Dämpfung von Druckstößen beim Eintritt des Kühlmittels in den Kühlmittelkasten 2. Damit werden der an sich steif ausgebildete Kühlmittelkühler 1, insbesondere der Kühlmittelkasten 2 und die Verbindung zwischen Rohrboden 3 und Kühlmittelkasten 2 entlastet. 2 shows a cross section through the coolant box 2 and the hollow body 5, which here has an approximately elliptical, that is also adapted to the shape of the coolant box 2 cross-section. To the coolant box 2 inwardly projecting ribs 7 are formed, which support the elastic pressure vessel 5, ie position in its upper position below the wall 2a, so that a sufficient free flow area for the coolant is maintained. The coolant-carrying tubes 4 are formed as flat tubes, between which the corrugated fins, not shown, are arranged, which form a brazed radiator block with the flat tubes. The coolant box 2 is the inlet box for the coolant in the radiator 1 and therefore has a coolant inlet nozzle, not shown here. The elastic pressure vessel 5 thus leads to a damping of pressure surges when entering the coolant in the coolant box 2. Thus, the rigid per se designed coolant radiator 1, in particular the coolant box 2 and the connection between the tube sheet 3 and the coolant tank 2 are relieved.

Abweichend vom oben beschriebenen Ausführungsbeispiel kann der Kühlmittelkühler auch als Ganzmetall-, insbesondere Ganzaluminiumkühler hergestellt werden. Der erfindungsgemäße Hohlkörper ist in diesem Falle auch aus Aluminium mit elastisch ausgebildeter Behälterwand ausgebildet und kann somit in den metallischen Kühlmittelkasten eingelötet werden.Notwithstanding the embodiment described above, the coolant radiator also produced as all-metal, in particular all-aluminum coolers become. The hollow body according to the invention is in this case too made of aluminum with elastically formed container wall and can thus be soldered in the metallic coolant box.

Claims (5)

Wärmeübertrager eines Kühlmittelkreislaufes eines Kraftfahrzeuges mit mindestens einem Kühlmittelkasten (2), in welchem ein gasgefüllter Hohlkörper (5) mit druckdämpfenden und/oder druckabsorbierenden Eigenschaften angeordnet ist, dadurch gekennzeichnet, dass der Hohlkörper (5) einen nach außen geführten Druckanschluss (6) aufweist.Heat exchanger of a coolant circuit of a motor vehicle with at least one coolant box (2), in which a gas-filled hollow body (5) is arranged with pressure-damping and / or pressure-absorbing properties, characterized in that the hollow body (5) has an outwardly guided pressure port (6). Wärmeübertrager nach Anspruch 1, dadurch gekennzeichnet, dass der Hohlkörper (5) im Kühlmitteleintrittskasten (2) angeordnet ist.Heat exchanger according to claim 1, characterized in that the hollow body (5) in the coolant inlet box (2) is arranged. Wärmeübertrager nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Druckanschluss als Rohr (6) ausgebildet ist, welches mit dem Inneren des Hohlkörpers (5) verbunden und durch eine Wand (2a) des Kühlmittelkastens (2) hindurchgeführt ist.Heat exchanger according to claim 1 or 2, characterized in that the pressure connection as a tube (6) is formed, which is connected to the interior of the hollow body (5) and passed through a wall (2a) of the coolant box (2). Wärmeübertrager nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass der Hohlkörper (5) ein Druckniveau aufweist, welches über den Druckanschluss (6) - auch während des Betriebes - einstellbar und/oder veränderbar ist.Heat exchanger according to claim 1, 2 or 3, characterized in that the hollow body (5) has a pressure level which is adjustable and / or changeable via the pressure connection (6) - also during operation. Wärmeübertrager nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Hohlkörper (5) im Kühlmittelkasten (2) eines Kühlmittelkühlers (1) angeordnet und durch am Kühlmittelkasten (2) angeordnete Haltemittel, insbesondere nach innen ragende Rippen (7) gehalten ist.Heat exchanger according to one of claims 1 to 4, characterized in that the hollow body (5) in the coolant box (2) of a coolant radiator (1) and by the coolant box (2) arranged holding means, in particular inwardly projecting ribs (7) is held.
EP20050004391 2004-03-18 2005-03-01 Heat exchanger for the cooling system of an automotive vehicle Withdrawn EP1577630A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410013687 DE102004013687A1 (en) 2004-03-18 2004-03-18 Heat exchanger of a coolant circuit of a motor vehicle
DE102004013687 2004-03-18

Publications (1)

Publication Number Publication Date
EP1577630A2 true EP1577630A2 (en) 2005-09-21

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EP20050004391 Withdrawn EP1577630A2 (en) 2004-03-18 2005-03-01 Heat exchanger for the cooling system of an automotive vehicle

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DE (1) DE102004013687A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006087031A1 (en) * 2005-02-18 2006-08-24 Ebm-Papst St. Georgen Gmbh & Co. Kg Heat exchanger
EP2485004A1 (en) * 2011-02-04 2012-08-08 Alfa Laval Corporate AB A heat exchanger assembly and use of an apparatus in a heat exchanger assembly
WO2012123254A1 (en) * 2011-03-14 2012-09-20 Siemens Aktiengesellschaft Heat exchanger
US20200079183A1 (en) * 2018-09-06 2020-03-12 Denso International America, Inc. Heat exchanger

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1927234A1 (en) * 1968-06-03 1969-12-04 Nippon Denso Company Ltd Radiators for motor vehicles
JPS5528832Y2 (en) * 1974-05-28 1980-07-10
FR2503345B1 (en) * 1981-04-02 1986-04-11 Valeo HEAT EXCHANGER AND ITS WATER BOX DEVICE AND EXPANSION VESSEL

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006087031A1 (en) * 2005-02-18 2006-08-24 Ebm-Papst St. Georgen Gmbh & Co. Kg Heat exchanger
US8459337B2 (en) 2005-02-18 2013-06-11 Papst Licensing Gmbh & Co. Kg Apparatus including a heat exchanger and equalizing vessel
EP2485004A1 (en) * 2011-02-04 2012-08-08 Alfa Laval Corporate AB A heat exchanger assembly and use of an apparatus in a heat exchanger assembly
WO2012104118A1 (en) * 2011-02-04 2012-08-09 Alfa Laval Corporate Ab A heat exchanger assembly and use of an apparatus in a heat exchanger
US20130284413A1 (en) * 2011-02-04 2013-10-31 Alfa Laval Corporate Ab Heat exchanger assembly and use of an apparatus in a heat exchanger
US9846001B2 (en) * 2011-02-04 2017-12-19 Alfa Laval Corporate Ab Heat exchanger assembly and use of an apparatus in a heat exchanger
WO2012123254A1 (en) * 2011-03-14 2012-09-20 Siemens Aktiengesellschaft Heat exchanger
US20200079183A1 (en) * 2018-09-06 2020-03-12 Denso International America, Inc. Heat exchanger

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