EP1371926A1 - Heat exchanger - Google Patents

Heat exchanger Download PDF

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Publication number
EP1371926A1
EP1371926A1 EP03012559A EP03012559A EP1371926A1 EP 1371926 A1 EP1371926 A1 EP 1371926A1 EP 03012559 A EP03012559 A EP 03012559A EP 03012559 A EP03012559 A EP 03012559A EP 1371926 A1 EP1371926 A1 EP 1371926A1
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EP
European Patent Office
Prior art keywords
flow channel
liquid container
channel elements
flow
liquid
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
EP03012559A
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German (de)
French (fr)
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EP1371926B1 (en
Inventor
Hans-Peter Heuss
Bruno Lösch
Joachim Zeeb
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Mahle Behr GmbH and Co KG
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Behr GmbH and Co KG
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Publication of EP1371926A1 publication Critical patent/EP1371926A1/en
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    • 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
    • F28F9/0214—Header boxes having their inner space divided by partitions for elongated header box, e.g. with transversal and longitudinal partitions having only longitudinal partitions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section

Definitions

  • the present invention relates to a heat exchanger.
  • it concerns the present invention a heat exchanger for use in Motor vehicle air conditioners.
  • Heat exchangers are used in large numbers in the automotive industry. Usually, heat exchangers are used to exchange heat between two media, preferably a liquid and a gaseous Medium.
  • the aim of the present invention is one over known heat exchangers improved design of a heat exchanger available put.
  • the heat exchanger according to the invention comprises flow channel elements on, wherein the flow channel elements preferably plate-shaped are executed.
  • flow channel elements made of flat tubes, wherein the length of the flow channel elements is arbitrary.
  • Such flow channel elements have at least two substantially parallel to each other flow channels. Preferably run the flow channels also at least partially parallel to Longitudinal axis of the flow channel element. Particularly preferred run the flow channels substantially over much of the length of the Flow channel element parallel to each other.
  • the flow channel elements further comprise at least one at least partially parallel to the longitudinal axis of the flow channel element extending Division area, which is arranged between the flow channels is and by the flow channels are delimited from each other.
  • the division region preferably extends over at least one part the length of the flow channel element, such as half Length, two-thirds of the length, three-quarters of the length, the whole length or but any intermediate values of the flow channel element.
  • the division area Interruptions in its course, through the free cross sections be defined, through which a flow connection between the flow channels the flow channel elements is composed, so that a fluid Medium, which flows in a flow channel, through the free cross-section can cross into the other flow channel.
  • the two flow channels of the flow channel elements therefore within the Flow channel elements by at least one free cross-section with each other connected.
  • the flow channel elements closed liquid-tight at one of its ends and the division area extends from the region of the open end of the flow channel element substantially parallel to the longitudinal center axis of the flow channel element into the region of the fluid-tight end of the Flow channel element, this course has interruptions, by which the one or more free cross sections are defined.
  • the flow channels have a cross-sectional area which in its course along the longitudinal axis of the flow channel element substantially is constant.
  • the cross section of the flow channels along the longitudinal axis of the flow channel element in essentially constant.
  • the heat exchanger according to the invention further comprises a liquid container on, which has a lid area, a floor area and at least having a separating element.
  • the liquid container also has at least one connection device on, through which a liquid inlet and outlet into and out of the liquid container is possible.
  • the heat exchanger for example be arranged in a heating circuit, so that, for example by heating elements connected to the flow channel elements a heating of a flow channel elements flowing through Liquid takes place.
  • a simultaneous heating of the heat exchanger flowing through the air and the flow channels flowing through the liquid for example by heating elements, preferably PTC heating elements or power semiconductor heating elements.
  • the partition serves to divide the interior of the liquid container in at least two rooms such that each same openings the flow channels in fluid communication with the respective Spacing the liquid container.
  • the rooms are for example Inlet and outlet spaces, which preferably each with a connection device are fluidly connected, so that an inflow of liquid in the inlet side of the liquid container from this into the flow channel element, through it, into the outlet side of the liquid container and flows through the outlet side connector.
  • the separating element divides the two spaces of the liquid container essentially liquid-tight from each other by being both with the Cover area as well as with the bottom area of the liquid container in essentially positively connected.
  • the separating element is preferably designed so that the outer contour of the side of the separating element, which points to the bottom area, essentially the surface course corresponds to the bottom portion of the liquid container, so that a substantially positive connection between the outer contour the separating element and the bottom portion of the liquid container consists.
  • the bottom region of the liquid container has bushings on, through which the flow channel elements in the interior of the liquid container protrude and in each case a flow channel of the Flow channel element fluidly connected to a Raun of the liquid container is.
  • the openings of the flow channels thus protrude into the liquid container, wherein the flow channel elements with the bottom portion the liquid container, for example, by a furnace brazing process or connected in a liquid-tight manner by gluing or the like are.
  • Cover area and bottom area of the liquid container can be at a Particularly preferred embodiment be designed in two parts, wherein the two parts, for example, by a furnace brazing process or are connected by gluing or the like liquid-tight together.
  • the division region of the flow channel elements slit-shaped recesses extending from the the flow channel openings having end of the flow channel elements at least extend partially parallel to the longitudinal central axis of the flow channel element.
  • these slot-shaped recesses extend such that the recesses within the liquid container are arranged, so that the separating element in the recesses so engages that the longitudinal axis of the separating element substantially parallel extends to the surface normal of the plate-shaped flow channel elements and that the separating element is designed approximately so that it fits perfectly or engages positively in the recesses of the division areas.
  • the recesses are made in such a way that the limit the recesses in the inserted flow channel element is so, the surface of the bottom area is defined by the interface of the division area, which adjoins the recess, essentially just continued.
  • the bushings a positive and / or non-positive connection.
  • the present invention has the partition on projections, which in recesses of the Intervene floor area, so that even in these areas a substantially positive connection of the floor area with the separating elements which is through an oven brazing process or gluing or the like is fixed.
  • the outer contour of the separating element follows while the surface of the bottom portion of the liquid container at least parallel over part of the length of the liquid container.
  • the embodiment illustrated below relates to a preferred Embodiment of a heat exchanger, in particular for a motor vehicle, according to the present invention.
  • Fig. 1 shows a perspective view of a heat exchanger whose Flow channel elements 2 has two flow channels 11, which is substantially are arranged parallel to each other. The two flow channels are delimited from each other by the division 7 and open at a predetermined distance in the liquid container. 1
  • the liquid container 1 consists essentially of a lid area 4 and a bottom portion 3, wherein according to the present invention the liquid container in each case one end of all flow channels of the Includes flow channel elements.
  • the liquid container is through a Separating element 5, which is arranged in the interior of the liquid container is divided into at least two spaces whose hydraulic flow direction is different.
  • These spaces each have at least one connection device (not shown) through which the heat exchange medium to the heat exchanger or can be dissipated.
  • the heat exchange medium via a first connection device not shown in the Heat exchanger is introduced, in the first space of the liquid container distributed on the flow channels arranged therein and due to a Forced flow through the flow channels in the second space of the liquid container directed.
  • a second connection device is the Heat exchanger medium derived from the heat exchanger.
  • the heat transfer between the heat exchange medium and the Heat exchanger flowing medium takes place via the inner surfaces the flow channels and the outer surfaces of the heat exchanger, wherein according to a preferred embodiment, the outer surface is increased by additional cooling fins to an improved To achieve heat transfer.
  • the flow channels have a of substantially rectangular cross-section, with the side transitions are executed curved.
  • the bottom portion of the liquid container has according to the number the flow channel elements passages on whose adjacent areas in a given angle or curvature in the interior extend conically into the liquid container.
  • the flow channel elements 2 further have a slot-shaped recess 8, which extends substantially along the longitudinal axis of the flow channel elements extends and is designed so that the recess with the adjacent bottom portion of the liquid container substantially flush.
  • the outer contour of the separating element is designed so that the Contour of the inner surface structure of the bottom portion 3 substantially follows and divides the container into at least two areas.
  • the separating element are further two separate spaces defined in the interior of the liquid container, which is essentially only via the predetermined flow paths of the flow channel elements in Fluid connection and are liquid-tight to the environment are.
  • Fig. 2 shows a longitudinal cross-section of a heat exchanger according to the present invention Invention.
  • the bottom area 3 In addition to the separating element 5, the bottom area 3 and to recognize the lid portion 4.
  • Fig. 2 also shows a preferred design of the bottom portion 3 and the bushings 9 arranged therein.
  • the transition between the recesses 8 and in the middle area subsequent Floor area portion 10 can be seen, which corresponds to the previous versions with a predetermined angle or a predetermined Curvature extends into the interior of the liquid container and its upper limit is flush with the lower end of the recesses concludes.

Abstract

Heat exchanger comprises plate-like flow channel elements (2) having at least two flow channels running parallel to each other and partially parallel to the longitudinal axis of the flow channel element, and a liquid vessel having a lid region (4), a base region (3), and a separating element (5). The liquid vessel has a connecting device for liquid to flow into and out of the vessel. The separating element divides the inner chamber of the vessel into two chambers so that the openings of the flow channels are in flow connection with each chamber of the vessel. The base region is connected to the lid region in a liquid-tight manner. The divided regions (7) have slit-like recesses (8) extending from the ends of the flow channel openings along the longitudinal axis of the flow elements. Preferred Features: The base region in a portion of the openings and especially in the region of the edge regions delimiting the openings protrudes into the vessel.

Description

Die vorliegende Erfindung betrifft einen Wärmetauscher. Insbesondere betrifft die vorliegende Erfindung einen Wärmetauscher zur Verwendung in Kraftfahrzeugklimaanlagen.The present invention relates to a heat exchanger. In particular, it concerns the present invention a heat exchanger for use in Motor vehicle air conditioners.

Wärmetauscher werden im Kraftfahrzeugbau in großen Stückzahlen eingesetzt. Üblicherweise dienen Wärmetauscher dem Austausch von Wärme zwischen zwei Medien, bevorzugt einem flüssigem und einem gasförmigem Medium.Heat exchangers are used in large numbers in the automotive industry. Usually, heat exchangers are used to exchange heat between two media, preferably a liquid and a gaseous Medium.

Ziel der vorliegenden Erfindung ist es, eine gegenüber bekannten Wärmetauschern verbesserte Bauform eines Wärmetauschers zur Verfügung zu stellen.The aim of the present invention is one over known heat exchangers improved design of a heat exchanger available put.

Demnach weist der erfindungsgemäße Wärmetauscher Strömungskanalelemente auf, wobei die Strömungskanalelemente vorzugsweise plattenförmig ausgeführt sind. Besonders bevorzugt sind derartige Strömungskanalelemente aus Flachrohren gefertigt, wobei die Länge der Strömungskanalelemente beliebig wählbar ist.Accordingly, the heat exchanger according to the invention comprises flow channel elements on, wherein the flow channel elements preferably plate-shaped are executed. Particularly preferred are such flow channel elements made of flat tubes, wherein the length of the flow channel elements is arbitrary.

Derartige Strömungskanalelemente weisen wenigstens zwei im wesentlichen parallel zueinander verlaufende Strömungskanäle auf. Vorzugsweise verlaufen die Strömungskanäle außerdem zumindest teilweise parallel zur Längsachse des Strömungskanalelementes. Besonders bevorzugt verlaufen die Strömungskanäle im wesentlichen über einen Großteil der Länge des Strömungskanalelementes parallel zueinander.Such flow channel elements have at least two substantially parallel to each other flow channels. Preferably run the flow channels also at least partially parallel to Longitudinal axis of the flow channel element. Particularly preferred run the flow channels substantially over much of the length of the Flow channel element parallel to each other.

Die Strömungskanalelemente weisen weiterhin wenigstens einen zumindest teilweise parallel zur Längsachse des Strömungskanalelementes verlaufenden Teilungsbereich auf, der zwischen den Strömungskanälen angeordnet ist und durch den die Strömungskanäle voneinander abgegrenzt werden. Vorzugsweise erstreckt sich der Teilungsbereich wenigstens über einen Teil der Länge des Strömungskanalelementes, wie beispielsweise die halbe Länge, zwei Drittel der Länge, drei Viertel der Länge, die ganze Länge oder aber beliebige Zwischenwerte des Strömungskanalelementes.The flow channel elements further comprise at least one at least partially parallel to the longitudinal axis of the flow channel element extending Division area, which is arranged between the flow channels is and by the flow channels are delimited from each other. The division region preferably extends over at least one part the length of the flow channel element, such as half Length, two-thirds of the length, three-quarters of the length, the whole length or but any intermediate values of the flow channel element.

In einer Ausführungsform der vorliegenden Erfindung weist der Teilungsbereich Unterbrechungen in seinem Verlauf auf, durch die freie Querschnitte definiert werden, durch die eine Strömungsverbindung zwischen den Strömungskanälen der Strömungskanalelemente besteht, so dass ein fluides Medium, welches in einem Strömungskanal fließt, durch den freien Querschnitt in den anderen Strömungskanal übertreten kann.In one embodiment of the present invention, the division area Interruptions in its course, through the free cross sections be defined, through which a flow connection between the flow channels the flow channel elements is composed, so that a fluid Medium, which flows in a flow channel, through the free cross-section can cross into the other flow channel.

Bei einer bevorzugten Ausführungsform der vorliegenden Erfindung sind die beiden Strömungskanäle der Strömungskanalelemente daher innerhalb der Strömungskanalelemente durch wenigstens einen freien Querschnitt miteinander verbunden. In a preferred embodiment of the present invention, the two flow channels of the flow channel elements therefore within the Flow channel elements by at least one free cross-section with each other connected.

In einer besonders bevorzugten Ausführungsform sind die Strömungskanalelemente an einem ihrer Enden flüssigkeitsdicht verschlossen und der Teilungsbereich verläuft vom Bereich des offenen Endes des Strömungskanalelementes im wesentlichen parallel zur Längsmittelachse des Strömungskanalelementes bis in den Bereich des fluiddicht verschlossenen Endes des Strömungskanalelementes, wobei dieser Verlauf Unterbrechungen aufweist, durch die der oder die freien Querschnitte definiert werden.In a particularly preferred embodiment, the flow channel elements closed liquid-tight at one of its ends and the division area extends from the region of the open end of the flow channel element substantially parallel to the longitudinal center axis of the flow channel element into the region of the fluid-tight end of the Flow channel element, this course has interruptions, by which the one or more free cross sections are defined.

Auf diese Weise fliest ein durch einen im Strömungskanal in das Strömungskanalelement einfließendes fluides Medium durch den oder die freien Querschnitte hindurch in den anderen Strömungskanal und tritt hierdurch wieder aus dem Strömungskanalelement aus.In this way one flows through one in the flow channel into the flow channel element inflowing fluid medium through the or the free Cross sections through into the other flow channel and thereby occurs again from the flow channel element.

Bei einer besonders bevorzugten Ausführungsform der vorliegenden Erfindung weisen die Strömungskanäle eine Querschnittsfläche auf, welche in ihren Verlauf entlang der Längsachse des Strömungskanalelementes im wesentlichen konstant ist. Besonders bevorzugt ist der Querschnitt der Strömungskanäle entlang der Längsachse des Strömungskanalelementes im wesentlichen konstant.In a particularly preferred embodiment of the present invention the flow channels have a cross-sectional area which in its course along the longitudinal axis of the flow channel element substantially is constant. Particularly preferred is the cross section of the flow channels along the longitudinal axis of the flow channel element in essentially constant.

Der erfindungsgemäße Wärmetauscher weist weiterhin einen Flüssigkeitsbehälter auf, welcher einen Deckelbereich, einen Bodenbereich und wenigstens ein Trennelement aufweist.The heat exchanger according to the invention further comprises a liquid container on, which has a lid area, a floor area and at least having a separating element.

Der Flüssigkeitsbehälter weist weiterhin wenigstens eine Anschlusseinrichtung auf, durch die ein Flüssigkeitsein- bzw. -auslauf in bzw. aus dem Flüssigkeitsbehälter möglich ist. Hierdurch kann der Wärmetauscher beispielsweise in einem Heizkreislauf angeordnet werden, so dass beispielsweise durch mit den Strömungskanalelementen in Verbindung stehende Heizelemente eine Erwärmung einer die Strömungskanalelemente durchfließende Flüssigkeit statt findet.The liquid container also has at least one connection device on, through which a liquid inlet and outlet into and out of the liquid container is possible. As a result, the heat exchanger, for example be arranged in a heating circuit, so that, for example by heating elements connected to the flow channel elements a heating of a flow channel elements flowing through Liquid takes place.

Bei einer besonders bevorzugten Ausführungsform der vorliegenden Erfindung sind zwischen den Strömungskanalelementen überdies Kühl- bzw. Wellrippen angeordnet, so dass über diese Wellrippen ein Austausch von Wärme zwischen einem den Wärmetauscher durchströmenden ersten Medium, vorzugsweise Luft, und einem die Strömungskanäle durchströmenden zweiten Medium, vorzugsweise Wasser bzw. Kühlmittel oder ein Wasser-Kühlmittel-Gemisch, stattfindet.In a particularly preferred embodiment of the present invention are also between the flow channel elements cooling or Corrugated ribs arranged so that over these corrugated ribs an exchange of Heat between a first medium flowing through the heat exchanger, preferably air, and one flowing through the flow channels second medium, preferably water or coolant or a water-coolant mixture, takes place.

Überdies kann eine gleichzeitige Erwärmung der den Wärmetauscher durchströmenden Luft und der die Strömungskanäle durchströmenden Flüssigkeit beispielsweise durch Heizelemente, vorzugsweise PTC-Heizelemente oder Leistungshalbleiter-Heizelemente erfolgen.Moreover, a simultaneous heating of the heat exchanger flowing through the air and the flow channels flowing through the liquid for example by heating elements, preferably PTC heating elements or power semiconductor heating elements.

Das Trennelement dient der Unterteilung des Innenraums des Flüssigkeitsbehälters in wenigstens zwei Räume derart, dass jeweils gleiche Öffnungen der Strömungskanäle in einer Strömungsverbindung mit den jeweiligen Räumen des Flüssigkeitsbehälters stehen. Die Räume sind beispielsweise Ein- bzw. Auslaufräume, die bevorzugt mit jeweils einer Anschlusseinrichtung strömungsverbunden sind, so dass ein Einströmen von Flüssigkeit in die Einlassseite des Flüssigkeitsbehälters von dieser in das Strömungskanalelement, durch dieses hindurch, in die Auslassseite des Flüssigkeitsbehälters und durch die Anschlusseinrichtung der Auslassseite strömt.The partition serves to divide the interior of the liquid container in at least two rooms such that each same openings the flow channels in fluid communication with the respective Spacing the liquid container. The rooms are for example Inlet and outlet spaces, which preferably each with a connection device are fluidly connected, so that an inflow of liquid in the inlet side of the liquid container from this into the flow channel element, through it, into the outlet side of the liquid container and flows through the outlet side connector.

Das Trennelement teilt die beiden Räume des Flüssigkeitsbehälters dabei im wesentlichen flüssigkeitsdicht voneinander, indem es sowohl mit dem Deckelbereich als auch mit dem Bodenbereich des Flüssigkeitsbehälters im wesentlichen formschlüssig verbunden ist. Das Trennelement ist dabei vorzugsweise so ausgeführt, dass die Außenkontur der Seite des Trennelementes, welche zum Bodenbereich weist, im wesentlichen dem Oberflächenverlauf des Bodenbereiches des Flüssigkeitsbehälters entspricht, so dass eine in wesentlichen formschlüssige Verbindung zwischen der Außenkontur des Trennelementes und dem Bodenbereich des Flüssigkeitsbehälters besteht.The separating element divides the two spaces of the liquid container essentially liquid-tight from each other by being both with the Cover area as well as with the bottom area of the liquid container in essentially positively connected. The separating element is preferably designed so that the outer contour of the side of the separating element, which points to the bottom area, essentially the surface course corresponds to the bottom portion of the liquid container, so that a substantially positive connection between the outer contour the separating element and the bottom portion of the liquid container consists.

Erfindungsgemäß weist der Bodenbereich des Flüssigkeitsbehälters Durchführungen auf, durch welche die Strömungskanalelemente in den Innenraum des Flüssigkeitsbehälters ragen und dabei jeweils ein Strömungskanal des Strömungskanalelementes mit einem Raun des Flüssigkeitsbehälters strömungsverbunden ist. Die Öffnungen der Strömungskanäle ragen somit in den Flüssigkeitsbehälter, wobei die Strömungskanalelemente mit dem Bodenbereich des Flüssigkeitsbehälters beispielsweise durch einen Ofen-Hartlöt-Prozess oder durch Kleben oder dergleichen flüssigkeitsdicht verbunden sind.According to the invention, the bottom region of the liquid container has bushings on, through which the flow channel elements in the interior of the liquid container protrude and in each case a flow channel of the Flow channel element fluidly connected to a Raun of the liquid container is. The openings of the flow channels thus protrude into the liquid container, wherein the flow channel elements with the bottom portion the liquid container, for example, by a furnace brazing process or connected in a liquid-tight manner by gluing or the like are.

Deckelbereich und Bodenbereich des Flüssigkeitsbehälters können bei einer besonders bevorzugten Ausführungsform zweiteilig ausgeführt sein, wobei die beiden Teile beispielsweise durch einen Ofen-Hartlöt-Prozess oder aber durch Kleben oder dergleichen flüssigkeitsdicht miteinander verbunden sind.Cover area and bottom area of the liquid container can be at a Particularly preferred embodiment be designed in two parts, wherein the two parts, for example, by a furnace brazing process or are connected by gluing or the like liquid-tight together.

Bei einer weiteren Ausführungsform der vorliegenden Erfindung sind Dekkelbereich und Bodenbereich des Flüssigkeitsbehälters einstückig ausgeführtIn another embodiment of the present invention are Dekkelbereich and bottom portion of the liquid container made in one piece

Erfindungsgemäß weist der Teilungsbereich der Strömungskanalelemente schlitzförmige Ausnehmungen auf, welche sich von dem die Strömungskanalöffnungen aufweisenden Ende der Strömungskanalelemente zumindest teilweise parallel zur Längsmittelachse des Strömungskanalelementes erstrecken. Vorzugsweise erstrecken sich diese schlitzförmigen Ausnehmungen derart, dass die Ausnehmungen innerhalb des Flüssigkeitsbehälters angeordnet sind, so dass das Trennelement in die Ausnehmungen derart eingreift, dass die Längsachse des Trennelementes im wesentlichen parallel zur Flächennormalen der plattenförmigen Strömungskanalelemente verläuft und dass das Trennelement in etwa so ausgeführt ist, dass es passgenau bzw. formschlüssig in die Ausnehmungen der Teilungsbereiche eingreift.According to the invention, the division region of the flow channel elements slit-shaped recesses extending from the the flow channel openings having end of the flow channel elements at least extend partially parallel to the longitudinal central axis of the flow channel element. Preferably, these slot-shaped recesses extend such that the recesses within the liquid container are arranged, so that the separating element in the recesses so engages that the longitudinal axis of the separating element substantially parallel extends to the surface normal of the plate-shaped flow channel elements and that the separating element is designed approximately so that it fits perfectly or engages positively in the recesses of the division areas.

Der Eingriff ist dabei so ausgeführt, dass eventuell freibleibende Querschnitte nicht größer sind als dass sie durch Lot oder Klebstoff oder ein ähnliches Verbindungsmaterial flüssigkeitsdicht ausgefüllt werden könnten.The procedure is carried out so that any remaining cross sections are not larger than that by solder or glue or the like Connecting material could be filled liquid-tight.

Idealerweise sind die Ausnehmungen derart ausgeführt, dass die Grenze der Ausnehmungen beim eingesteckten Strömungskanalelement so verläuft, dass die Oberfläche des Bodenbereiches durch die Grenzfläche des Teilungsbereiches, welche sich an die Ausnehmung anschließt, im wesentlichen eben fortgeführt wird.Ideally, the recesses are made in such a way that the limit the recesses in the inserted flow channel element is so, the surface of the bottom area is defined by the interface of the division area, which adjoins the recess, essentially just continued.

Auf diese Weise besteht eine im wesentlichen formschlüssige Verbindung der Außenkontur des Trennelementes mit dem Bodenbereich des Flüssigkeitsbehälters bzw. der Strömungskanalelemente auch im Bereich der Durchführungen, bei denen die Grenzfläche des Teilungsbereiches an den Trennelement anliegt.In this way, there is a substantially positive connection the outer contour of the separating element with the bottom portion of the liquid container or the flow channel elements in the area of Feedthroughs where the interface of the dividing area adjoins the Separating element abuts.

Zwischen den Wandungen der Strömungskanäle und dem Trennelement besteht auf diese Weise eine im wesentlichen flüssigkeitsdichte Verbindung.Between the walls of the flow channels and the separating element In this way, there is a substantially liquid-tight connection.

Bei einer besonders bevorzugten Ausführungsform der vorliegenden Erfindung ist der Bodenbereich im Abschnitt der Durchführungen und insbesondere im Bereich der die Durchführungen begrenzenden Randbereiche zum Inneren des Flüssigkeitsbehälters vorstehend ausgeführt. Auf diese Weise besteht zwischen den Strömungskanalelementen und den Randbereichen der Durchführungen eine form- und/oder kraftschlüssige Verbindung. Dadurch kann auf einfache Weise eine flüssigkeitsdichte Verbindung zwischen dem Bodenbereich des Flüssigkeitsbehälters und den Strömungskanalelementen beispielsweise durch einen Ofen-Hartlöt-Prozess oder ein Kleben oder dergleichen hergestellt werden.In a particularly preferred embodiment of the present invention is the bottom area in the section of the bushings and in particular in the area of the passages bordering the passages to Interior of the liquid container carried out above. In this way exists between the flow channel elements and the edge regions the bushings a positive and / or non-positive connection. Thereby can easily create a fluid tight connection between the bottom portion of the liquid container and the flow channel elements for example, by a furnace brazing process or gluing or the like.

Beim Einstecken der Strömungskanalelemente in einen vorgefertigten erfindungsgemäßen Flüssigkeitsbehälter wird durch die schlitzförmigen Ausnehmungen die Einstecktiefe der Strömungskanalelemente einfach und genau begrenzt, so dass ein exakte Produktion und insbesondere eine das Erfordernis der Flüssigkeitsdichtigkeit erfüllende und gleichzeitig einfache Herstellung der erfindungsgemäßen Wärmetauscher möglich ist.When inserting the flow channel elements in a prefabricated inventive Liquid container is through the slot-shaped recesses the insertion depth of the flow channel elements easily and accurately limited, so that exact production and in particular one the requirement the liquid-tightness-fulfilling and at the same time simple production the heat exchanger according to the invention is possible.

Bei einer besonders bevorzugten Ausführungsform der vorliegenden Erfindung weist das Trennelement Vorsprünge auf, welche in Vertiefungen des Bodenbereichs eingreifen, so dass auch in diesen Bereichen eine im wesentlichen formschlüssige Verbindung des Bodenbereichs mit den Trennelementen besteht, welche durch einen Ofen-Hartlöt-Prozess oder ein Kleben oder dergleichen fixiert wird. Die Außenkontur des Trennelementes folgt dabei der Oberfläche des Bodenbereiches des Flüssigkeitsbehälters zumindest über einen Teil der Länge des Flüssigkeitsbehälters parallel.In a particularly preferred embodiment of the present invention has the partition on projections, which in recesses of the Intervene floor area, so that even in these areas a substantially positive connection of the floor area with the separating elements which is through an oven brazing process or gluing or the like is fixed. The outer contour of the separating element follows while the surface of the bottom portion of the liquid container at least parallel over part of the length of the liquid container.

Weitere Merkmale der vorliegenden Erfindung ergeben sich aus der folgenden detaillierten Figurenbeschreibung in Verbindung mit den Ansprüchen und den Zeichnungen.Further features of the present invention will become apparent from the following detailed description of the figures in conjunction with the claims and the drawings.

Es zeigen:

Fig. 1
eine perspektivische Darstellung eines Wärmetauschers für ein Kraftfahrzeug gemäß der vorliegenden Erfindung,
Fig. 2
eine schematische Schnittdarstellung eines Wärmetauschers gemäß der vorliegenden Erfindung
Show it:
Fig. 1
a perspective view of a heat exchanger for a motor vehicle according to the present invention,
Fig. 2
a schematic sectional view of a heat exchanger according to the present invention

Das nachfolgend dargestellte Ausführungsbeispiel betrifft eine bevorzugte Ausführungsform eines Wärmetauschers, insbesondere für ein Kraftfahrzeug, gemäß der vorliegenden Erfindung.The embodiment illustrated below relates to a preferred Embodiment of a heat exchanger, in particular for a motor vehicle, according to the present invention.

Fig. 1 zeigt eine perspektivische Darstellung eines Wärmetauschers dessen Strömungskanalelemente 2 zwei Strömungskanäle 11 aufweist, die im wesentlichen parallel zueinander angeordnet sind. Die beiden Strömungskanäle werden voneinander durch den Teilungsbereich 7 abgegrenzt und münden in einem vorgegebenen Abstand in den Flüssigkeitsbehälter 1.Fig. 1 shows a perspective view of a heat exchanger whose Flow channel elements 2 has two flow channels 11, which is substantially are arranged parallel to each other. The two flow channels are delimited from each other by the division 7 and open at a predetermined distance in the liquid container. 1

Der Flüssigkeitsbehälter 1 besteht im wesentlichen aus einem Deckelbereich 4 und einem Bodenbereich 3, wobei gemäß der vorliegenden Erfindung der Flüssigkeitsbehälter jeweils ein Ende aller Strömungskanäle der Strömungskanalelemente aufnimmt. Der Flüssigkeitsbehälter ist durch ein Trennelement 5, welches im Innenraum des Flüssigkeitsbehälters angeordnet ist, in wenigstens zwei Räume unterteilt, deren hydraulische Strömungsrichtung unterschiedlich ist.The liquid container 1 consists essentially of a lid area 4 and a bottom portion 3, wherein according to the present invention the liquid container in each case one end of all flow channels of the Includes flow channel elements. The liquid container is through a Separating element 5, which is arranged in the interior of the liquid container is divided into at least two spaces whose hydraulic flow direction is different.

Diese Räume weisen wenigstens je eine Anschlusseinrichtung (nicht dargestellt) auf, durch welche das Wärmetauschmedium dem Wärmetauscher zu- bzw. abgeführt werden kann.These spaces each have at least one connection device (not shown) through which the heat exchange medium to the heat exchanger or can be dissipated.

Gemäß des vorliegenden Ausführungsbeispiels wird das Wärmetauschermedium, das über eine erste nicht dargestellte Anschlusseinrichtung in den Wärmetauscher eingeleitet wird, im ersten Raum des Flüssigkeitsbehälters auf die hierin angeordneten Strömungskanäle verteilt und aufgrund einer Zwangsströmung über die Strömungskanäle in den zweiten Raum des Flüssigkeitsbehälters geleitet. Über eine zweite Anschlusseinrichtung wird das Wärmetauschermedium aus dem Wärmetauscher abgeleitet.According to the present embodiment, the heat exchange medium, via a first connection device not shown in the Heat exchanger is introduced, in the first space of the liquid container distributed on the flow channels arranged therein and due to a Forced flow through the flow channels in the second space of the liquid container directed. About a second connection device is the Heat exchanger medium derived from the heat exchanger.

Der Wärmeübergang zwischen dem Wärmetauschermedium und dem den Wärmetauscher umströmenden Medium erfolgt über die inneren Oberflächen der Strömungskanäle und den äußeren Oberflächen des Wärmetauschers, wobei gemäß einer bevorzugten Ausführungsform die äußere Oberfläche durch zusätzliche Kühlrippen vergrößert wird, um eine verbesserte Wärmeübertragung zu erreichen.The heat transfer between the heat exchange medium and the Heat exchanger flowing medium takes place via the inner surfaces the flow channels and the outer surfaces of the heat exchanger, wherein according to a preferred embodiment, the outer surface is increased by additional cooling fins to an improved To achieve heat transfer.

Gemäß der vorliegenden Ausführungsform weisen die Strömungskanäle einen im wesentlichen rechteckigen Querschnitt auf, wobei die Seitenübergänge gekrümmt ausgeführt sind.According to the present embodiment, the flow channels have a of substantially rectangular cross-section, with the side transitions are executed curved.

Der Bodenbereich des Flüssigkeitsbehälters weist entsprechend der Zahl der Strömungskanalelemente Durchführungen auf, deren angrenzende Bereiche sich in einem vorgegebenen Winkel bzw. Krümmung in den Innenraum des Flüssigkeitsbehälters hinein konusartig erstrecken.The bottom portion of the liquid container has according to the number the flow channel elements passages on whose adjacent areas in a given angle or curvature in the interior extend conically into the liquid container.

Diese im wesentlichen an die äußeren Abmessungen der Strömungskanalelemente 2 angepassten Durchführungen sind so gestaltet, dass eine im wesentlichen formschlüssige und nach dem Hartlötprozess flüssigkeitsdichte Verbindung zwischen den Strömungskanalelementen und dem Bodenbereich 3 besteht.This substantially to the outer dimensions of the flow channel elements 2 adapted feedthroughs are designed so that one in the essential positive and liquid-tight after the brazing process Connection between the flow channel elements and the floor area 3 exists.

Die Strömungskanalelemente 2 weisen ferner eine schlitzförmige Ausnehmung 8 auf, welche sich im wesentlichen entlang der Längsachse der Strömungskanalelemente erstreckt und so gestaltet ist, dass die Ausnehmung mit dem angrenzenden Bodenbereich des Flüssigkeitsbehälters im wesentlichen bündig abschließt.The flow channel elements 2 further have a slot-shaped recess 8, which extends substantially along the longitudinal axis of the flow channel elements extends and is designed so that the recess with the adjacent bottom portion of the liquid container substantially flush.

Gemäß dem vorliegenden Ausführungsbeispiel greift das im Flüssigkeitsbehälter angeordnete Trennelement 5 in die schlitzförmigen Ausführungen 8 ein. Ferner ist die Außenkontur des Trennelements so gestaltet, dass die Kontur der inneren Oberflächenstruktur des Bodenbereichs 3 im wesentlichen folgt und den Behälter in wenigstens zwei Bereiche unterteilt.According to the present embodiment, this intervenes in the liquid container arranged separating element 5 in the slot-shaped versions. 8 one. Furthermore, the outer contour of the separating element is designed so that the Contour of the inner surface structure of the bottom portion 3 substantially follows and divides the container into at least two areas.

Durch das Trennelement werden ferner zwei voneinander getrennte Räume im Innenraum des Flüssigkeitsbehälters definiert, die im wesentlichen nur über die vorgegebenen Strömungswege der Strömungskanalelemente in Fluidverbindung stehen und gegenüber der Umgebung flüssigkeitsdicht sind.By the separating element are further two separate spaces defined in the interior of the liquid container, which is essentially only via the predetermined flow paths of the flow channel elements in Fluid connection and are liquid-tight to the environment are.

Fig. 2 zeigt einen Längsquerschnitt eines Wärmetauschers gemäß der vorliegenden Erfindung. Neben dem Trennelement 5 sind der Bodenbereich 3 und der Deckelbereich 4 zu erkennen.Fig. 2 shows a longitudinal cross-section of a heat exchanger according to the present invention Invention. In addition to the separating element 5, the bottom area 3 and to recognize the lid portion 4.

Die Fig. 2 zeigt ferner eine bevorzugte Gestaltung des Bodenbereichs 3 und der hierin angeordneten Durchführungen 9. Insbesondere ist der Übergang zwischen den Ausnehmungen 8 und den sich im Mittelbereich anschließenden Bodenbereichsabschnitt 10 zu erkennen, der sich entsprechend der vorherigen Ausführungen mit einem vorgegebenen Winkel bzw. einer vorgegebenen Krümmung in den Innenraum des Flüssigkeitsbehälters erstreckt und dessen obere Begrenzung bündig mit dem unteren Ende der Ausnehmungen abschließt.Fig. 2 also shows a preferred design of the bottom portion 3 and the bushings 9 arranged therein. In particular, the transition between the recesses 8 and in the middle area subsequent Floor area portion 10 can be seen, which corresponds to the previous versions with a predetermined angle or a predetermined Curvature extends into the interior of the liquid container and its upper limit is flush with the lower end of the recesses concludes.

Claims (4)

Wärmetauscher, insbesondere für ein Kraftfahrzeug, bestehend aus
   im wesentlichen plattenförmigen Strömungskanalelementen (2), welche wenigstens zwei Strömungskanäle aufweisen,
   wobei die Strömungskanäle im wesentlichen parallel zueinander und zumindest teilweise parallel zur Längsachse des Strömungskanalelementes (2) verlaufen, und
   wobei die Strömungskanäle der Strömungskanalelemente durch wenigstens einen zumindest teilweise parallel zur Längsachse des Strömungskanalelementes verlaufenden Teilungsbereich (7) von einander abgegrenzt werden, und
   wenigstens einem Flüssigkeitsbehälter, welcher einen Deckelbereich (4), einen Bodenbereich (3) und wenigstens ein Trennelement (5) aufweist,
   wobei der Flüssigkeitsbehälter wenigstens eine Anschlusseinrichtung aufweist, durch die ein Flüssigkeitsein- bzw. -auslauf in/aus dem Flüssigkeitsbehälter möglich ist, und
   wobei das Trennelement den Innenraum des Flüssigkeitsbehälters in wenigstens zwei Räume unterteilt, so dass die Öffnungen der Strömungskanäle in einer Strömungsverbindung mit den jeweiligen Räumen des Flüssigkeitsbehälters stehen, und
   wobei die beiden Räume des Flüssigkeitsbehälters durch das Trennelement im wesentlichen flüssigkeitsdicht voneinander getrennt sind, und
   wobei der Bodenbereich (3) mit dem Deckelement flüssigkeitsdicht verbunden ist und Durchführungen (9) aufweist, durch welche die Strömungskanalelemente in den Innenraum des Flüssigkeitsbehälters ragen, und
   die Teilungsbereiche (7) schlitzförmige Ausnehmungen (8) aufweisen, welche sich von den die Strömungskanalöffnungen aufweisenden Enden der Strömungskanalelemente im wesentlichen soweit entlang der Längsachse der Strömungskanalelemente erstrecken, dass zwischen den in den Flüssigkeitsbehälter ragenden Strömungskanalelementen das Trennelement (5) derart eingreift, dass zwischen den Wandungen der Strömungskanäle und dem Trennelement eine im wesentlichen flüssigkeitsdichte Verbindung besteht,
wobei die Außenkontur des Trennelementes im wesentlichen dem Oberflächenverlauf des Bodenbereichs des Flüssigkeitsbehälters entspricht, und
wobei die Querschnittsfläche der Strömungskanäle entlang der Längsachse der Strömungskanalelemente im wesentlichen konstant ist. Heat exchanger, in particular for a motor vehicle, consisting of
essentially plate-shaped flow channel elements (2), which have at least two flow channels,
wherein the flow channels are substantially parallel to each other and at least partially parallel to the longitudinal axis of the flow channel element (2), and
wherein the flow channels of the flow channel elements are defined by at least one at least partially parallel to the longitudinal axis of the flow channel element extending partition region (7) of each other, and
at least one liquid container which has a lid region (4), a bottom region (3) and at least one separating element (5),
wherein the liquid container has at least one connection device, by means of which a liquid inlet or outlet into / from the liquid container is possible, and
wherein the partition member divides the interior of the liquid container into at least two spaces so that the openings of the flow channels are in fluid communication with the respective spaces of the liquid container, and
wherein the two spaces of the liquid container are separated by the separating element substantially liquid-tight, and
wherein the bottom portion (3) is liquid-tightly connected to the cover member and has passages (9) through which the flow channel members protrude into the interior of the liquid container, and
the dividing regions (7) have slot-shaped recesses (8) which extend substantially as far along the longitudinal axis of the flow channel elements from the ends of the flow channel elements having the flow channel openings that the separating element (5) engages between the flow channel elements projecting into the liquid container the walls of the flow channels and the separating element is a substantially liquid-tight connection,
wherein the outer contour of the separating element substantially corresponds to the surface profile of the bottom portion of the liquid container, and
wherein the cross-sectional area of the flow channels is substantially constant along the longitudinal axis of the flow channel elements. Wärmetauscher gemäß Anspruch 1,
dadurch gekennzeichnet, dass
der Bodenbereich (3) im Abschnitt der Durchführungen (9), und insbesondere im Bereich der die Durchführungen begrenzenden Randbereiche (10) ins Innere des Flüssigkeitsbehälters vorstehend ausgeführt ist, wobei zwischen den Strömungskanalelementen und den Randbereichen der Durchführungen eine im wesentlichen formschlüssige und/oder kraftschlüssige Verbindung besteht.Heat exchanger according to claim 1,
characterized in that
the bottom region (3) in the section of the passages (9), and in particular in the region of the edge regions (10) delimiting the passages, is designed to project into the interior of the liquid container, wherein an essentially positive and / or non-positive fit exists between the flow channel elements and the edge regions of the passages Connection exists. Wärmetauscher gemäß Anspruch 1 oder Anspruch 2,
dadurch gekennzeichnet, dass
das Trennelement Vorsprünge (6) aufweist, welche in Vertiefungen des Bodenbereichs eingreift, so dass im Bereich dieser Vertiefungen eine im wesentlichen formschlüssige Verbindung des Bodenbereichs mit dem Trennelement (5) besteht.Heat exchanger according to claim 1 or claim 2,
characterized in that
the separating element has projections (6) which engage in depressions of the bottom region, so that in the region of these depressions there is an essentially positive connection of the bottom region to the separating element (5). Wärmetauscher gemäß einem der vorstehenden Ansprüche,
dadurch gekennzeichnet, dass
die beiden Strömungskanäle der Strömungskanalelemente innerhalb der Strömungskanalelemente durch wenigstens einen freien Querschnitt miteinander verbunden sind.Heat exchanger according to one of the preceding claims,
characterized in that
the two flow channels of the flow channel elements within the flow channel elements are interconnected by at least one free cross section.
EP03012559A 2002-06-14 2003-06-02 Heat exchanger Expired - Lifetime EP1371926B1 (en)

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DE10226753 2002-06-14
DE10226753A DE10226753A1 (en) 2002-06-14 2002-06-14 heat exchangers

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ES2272846T3 (en) 2007-05-01
ATE342481T1 (en) 2006-11-15
DE10226753A1 (en) 2004-01-08
EP1371926B1 (en) 2006-10-11
DE50305322D1 (en) 2006-11-23

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