EP1371926B1 - Heat exchanger - Google Patents

Heat exchanger Download PDF

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Publication number
EP1371926B1
EP1371926B1 EP03012559A EP03012559A EP1371926B1 EP 1371926 B1 EP1371926 B1 EP 1371926B1 EP 03012559 A EP03012559 A EP 03012559A EP 03012559 A EP03012559 A EP 03012559A EP 1371926 B1 EP1371926 B1 EP 1371926B1
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EP
European Patent Office
Prior art keywords
flow channel
channel elements
flow
liquid
separating element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03012559A
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German (de)
French (fr)
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EP1371926A1 (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.
  • the present invention relates to a heat exchanger for use in automotive air conditioning systems.
  • Such a heat exchanger is known from FR 2751403.
  • Heat exchangers are used in large numbers in the automotive industry. Typically, heat exchangers are used to exchange heat between two media, preferably a liquid and a gaseous medium.
  • the aim of the present invention is to provide a comparison with known heat exchangers improved design of a heat exchanger available.
  • the heat exchanger according to the invention on flow channel elements, wherein the flow channel elements are preferably designed plate-shaped.
  • Particularly preferred are such flow channel elements made of flat tubes, wherein the length of the flow channel elements is arbitrary selectable.
  • Such flow channel elements have at least two substantially parallel flow channels.
  • the flow channels also extend at least partially parallel to the longitudinal axis of the flow channel element.
  • the flow channels extend substantially over a large part of the length of the flow channel element parallel to each other.
  • the flow channel elements furthermore have at least one division region extending at least partially parallel to the longitudinal axis of the flow channel element, which is arranged between the flow channels and by means of which the flow channels are delimited from one another.
  • the dividing region preferably extends over at least part of the length of the flow channel element, for example half the length, two-thirds of the length, three-quarters of the length, the entire length or any intermediate values of the flow channel element.
  • the dividing area has interruptions in its course defining free cross sections through which there is a flow connection between the flow channels of the flow channel elements, so that a fluid flowing in a flow channel through the free cross section in FIG can cross the other flow channel.
  • the two flow channels of the flow channel elements are therefore interconnected within the flow channel elements by at least one free cross section.
  • the flow channel elements are liquid-tightly closed at one of their ends and the dividing region 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 having interruptions by which or the free cross sections are defined.
  • the flow channels have a cross-sectional area which is substantially constant in their course along the longitudinal axis of the flow channel element.
  • the cross section of the flow channels along the longitudinal axis of the flow channel element is substantially constant.
  • the heat exchanger according to the invention also has a liquid container which has a lid region, a bottom region and at least one separating element.
  • the liquid container furthermore has at least one connection device, by means of which a liquid inlet or outlet into or out of the liquid container is possible.
  • the heat exchanger can be arranged, for example, in a heating circuit, so that, for example, by heating elements connected to the flow channel elements a heating of the flow channel elements flowing through liquid takes place.
  • cooling or corrugated fins are additionally arranged between the flow channel elements, so that these corrugated fins exchange heat between a first medium flowing through the heat exchanger, preferably air, and a second medium flowing through the flow channels, preferably water or coolant or a water-coolant mixture takes place.
  • a simultaneous heating of the air flowing through the heat exchanger and of the liquid flowing through the flow channels may take place, for example, by heating elements, preferably PTC heating elements or power semiconductor heating elements.
  • the separating element serves to divide the interior of the liquid container into at least two spaces such that in each case identical openings of the flow channels are in a flow connection with the respective spaces of the liquid container.
  • the spaces are, for example, inlet and outlet spaces, which are preferably connected in fluid communication with a respective connection device, so that an inflow of liquid into the inlet side of the liquid container from this into the flow channel element, therethrough, into the outlet side of the liquid container and through the connection means of the Outlet side flows.
  • the separating element divides the two chambers of the liquid container substantially liquid-tight from each other by being connected substantially positively with both the lid portion and with the bottom portion of the liquid container.
  • the separating element is preferably designed so that the outer contour of the side of the separating element, which faces the bottom portion substantially corresponds to the surface profile of the bottom portion of the liquid container, so that there is a substantially positive connection between the outer contour of the separating element and the bottom portion of the liquid container.
  • the bottom region of the liquid container has openings through which the flow channel elements protrude into the interior of the liquid container and in each case a flow channel of the flow channel element is flow-connected to a fence of the liquid container.
  • the openings of the flow channels thus protrude into the liquid container, wherein the flow channel elements are liquid-tightly connected to the bottom region of the liquid container, for example by a furnace brazing process or by gluing or the like.
  • Lid region and bottom region of the liquid container can be made in two parts in a particularly preferred embodiment, wherein the two parts are connected to each other, for example, by a furnace brazing process or by gluing or the like liquid-tight.
  • the cover area and the bottom area of the liquid container are made in one piece
  • the dividing region of the flow channel elements has slot-shaped recesses which extend at least partially parallel to the longitudinal center axis of the flow channel element from the end of the flow channel elements having the flow channel openings.
  • These slit-shaped recesses extend in such a way that the recesses are arranged inside the liquid container, so that the separating element engages in the recesses such that the longitudinal axis of the separating element runs substantially parallel to the surface normal of the plate-shaped flow channel elements and that the separating element is designed approximately that it engages with an exact fit or positive fit in the recesses of the division areas.
  • the intervention is carried out so that any remaining free cross-sections are not greater than that they could be filled liquid-tight by solder or adhesive or a similar compound material.
  • the recesses are designed such that the boundary of the recesses in the inserted flow channel element extends so that the surface of the bottom region is substantially flatly continued through the boundary surface of the division region, which adjoins the recess.
  • the bottom area in the section of the bushings and in particular in the region of the edge regions bounding the bushings to the Interior of the liquid container carried out above.
  • a liquid-tight connection between the bottom region of the liquid container and the flow channel elements for example, by a furnace brazing process or gluing or the like, can be easily produced.
  • the insertion depth of the flow channel elements is simply and precisely limited by the slot-shaped recesses so that exact production and, in particular, a requirement for liquid-tightness and at the same time simple production of the heat exchanger according to the invention is possible.
  • the partition member has projections which engage in recesses of the bottom portion, so that also in these areas a substantially positive connection of the bottom portion with the separating elements, which by a furnace brazing process or gluing or the like is fixed.
  • the outer contour of the separating element follows the surface of the bottom region of the liquid container in parallel over at least 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 are arranged substantially parallel to each other. The two flow channels are delimited from each other by the division region 7 and open at a predetermined distance in the liquid container. 1
  • the liquid container 1 consists essentially of a lid portion 4 and a bottom portion 3, wherein according to the present invention, the liquid container receives one end of each flow channels of the flow channel elements.
  • the liquid container is divided by a separating element 5, which is arranged in the interior of the liquid container, in at least two spaces, the hydraulic flow direction is different.
  • These spaces each have at least one connection device (not shown), through which the heat exchange medium can be supplied to or removed from the heat exchanger.
  • the heat exchange medium which is connected via a first connection device not shown in the Heat exchanger is introduced, distributed in the first space of the liquid container to the flow channels arranged therein and passed through a forced flow through the flow channels in the second space of the liquid container. Via a second connection device, the heat exchanger medium is discharged from the heat exchanger.
  • the flow channels have a substantially rectangular cross section, wherein the side transitions are curved.
  • the bottom region of the liquid container has, in accordance with the number of flow channel elements, passages whose adjacent regions extend conically in a predetermined angle or curvature into the interior of the liquid container.
  • feedthroughs which are adapted substantially to the outer dimensions of the flow channel elements 2, are designed in such a way that there is a substantially form-fitting connection, which is liquid-tight after the brazing process, between the flow channel elements and the bottom region 3.
  • 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 is substantially flush with the adjacent bottom portion of the liquid container.
  • the separating element 5 arranged in the liquid container engages in the slot-shaped embodiments 8. 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.
  • the separating element further two separate spaces are defined in the interior of the liquid container, which are in fluid communication substantially only via the predetermined flow paths of the flow channel elements and are liquid-tight with respect to the environment.
  • Fig. 2 shows a longitudinal cross section of a heat exchanger according to the present invention.
  • the bottom region 3 and the lid region 4 can be seen.
  • FIG. 2 also shows a preferred design of the bottom region 3 and the bushings 9 arranged therein.
  • the transition between the recesses 8 and the bottom region section 10 adjoining in the middle region can be seen, which according to the previous embodiments has a predetermined angle or a predetermined curvature extends into the interior of the liquid container and its upper boundary is flush with the lower end of the recesses.

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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)
  • Separation By Low-Temperature Treatments (AREA)

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. Solch ein Wärmetauscher ist aus FR 2751403 bekannt.The present invention relates to a heat exchanger. In particular, the present invention relates to a heat exchanger for use in automotive air conditioning systems. Such a heat exchanger is known from FR 2751403.

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. Typically, 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 to provide a comparison with known heat exchangers improved design of a heat exchanger available.

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 on flow channel elements, wherein the flow channel elements are preferably designed plate-shaped. Particularly preferred are such flow channel elements made of flat tubes, wherein the length of the flow channel elements is arbitrary selectable.

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 flow channels. Preferably, the flow channels also extend at least partially parallel to the longitudinal axis of the flow channel element. Particularly preferably, the flow channels extend substantially over a large part 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 furthermore have at least one division region extending at least partially parallel to the longitudinal axis of the flow channel element, which is arranged between the flow channels and by means of which the flow channels are delimited from one another. The dividing region preferably extends over at least part of the length of the flow channel element, for example half the length, two-thirds of the length, three-quarters of the length, the entire length or any intermediate values of the flow channel element.

In der 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 the embodiment of the present invention, the dividing area has interruptions in its course defining free cross sections through which there is a flow connection between the flow channels of the flow channel elements, so that a fluid flowing in a flow channel through the free cross section in FIG can cross the other flow channel.

Bei der Ausführungsform der vorliegenden Erfindung sind die beiden Strömungskanäle der Strömungskanalelemente daher innerhalb der Strömungskanalelemente durch wenigstens einen freien Querschnitt miteinander verbunden.In the embodiment of the present invention, the two flow channels of the flow channel elements are therefore interconnected within the flow channel elements by at least one free cross section.

In der 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 the embodiment, the flow channel elements are liquid-tightly closed at one of their ends and the dividing region 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 having interruptions by which or the 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, a fluid flowing into the flow channel element through a flow channel flows through the one or more free cross sections into the other flow channel and thereby exits the flow channel element again.

Bei der 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 the embodiment of the present invention, the flow channels have a cross-sectional area which is substantially constant in their course along the longitudinal axis of the flow channel element. Particularly preferably, the cross section of the flow channels along the longitudinal axis of the flow channel element is substantially 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 also has a liquid container which has a lid region, a bottom region and at least one 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 furthermore has at least one connection device, by means of which a liquid inlet or outlet into or out of the liquid container is possible. As a result, the heat exchanger can be arranged, for example, in a heating circuit, so that, for example, by heating elements connected to the flow channel elements a heating of the 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, cooling or corrugated fins are additionally arranged between the flow channel elements, so that these corrugated fins exchange heat between a first medium flowing through the heat exchanger, preferably air, and a second medium flowing through the flow channels, 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 air flowing through the heat exchanger and of the liquid flowing through the flow channels may take place, 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 separating element serves to divide the interior of the liquid container into at least two spaces such that in each case identical openings of the flow channels are in a flow connection with the respective spaces of the liquid container. The spaces are, for example, inlet and outlet spaces, which are preferably connected in fluid communication with a respective connection device, so that an inflow of liquid into the inlet side of the liquid container from this into the flow channel element, therethrough, into the outlet side of the liquid container and through the connection means of the Outlet side flows.

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 chambers of the liquid container substantially liquid-tight from each other by being connected substantially positively with both the lid portion and with the bottom portion of the liquid container. The separating element is preferably designed so that the outer contour of the side of the separating element, which faces the bottom portion substantially corresponds to the surface profile of the bottom portion of the liquid container, so that there is a substantially positive connection between the outer contour of the separating element and the bottom portion of the liquid container.

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 openings through which the flow channel elements protrude into the interior of the liquid container and in each case a flow channel of the flow channel element is flow-connected to a fence of the liquid container. The openings of the flow channels thus protrude into the liquid container, wherein the flow channel elements are liquid-tightly connected to the bottom region of the liquid container, for example by a furnace brazing process or by gluing or the like.

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.Lid region and bottom region of the liquid container can be made in two parts in a particularly preferred embodiment, wherein the two parts are connected to each other, for example, by a furnace brazing process or by gluing or the like liquid-tight.

Bei einer weiteren Ausführungsform der vorliegenden Erfindung sind Dekkelbereich und Bodenbereich des Flüssigkeitsbehälters einstückig ausgeführtIn a further embodiment of the present invention, the cover area and the bottom area of the liquid container are 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. Diese schlitzförmigen Ausnehmungen erstrecken sich 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 dividing region of the flow channel elements has slot-shaped recesses which extend at least partially parallel to the longitudinal center axis of the flow channel element from the end of the flow channel elements having the flow channel openings. These slit-shaped recesses extend in such a way that the recesses are arranged inside the liquid container, so that the separating element engages in the recesses such that the longitudinal axis of the separating element runs substantially parallel to the surface normal of the plate-shaped flow channel elements and that the separating element is designed approximately that it engages with an exact fit or positive fit 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 intervention is carried out so that any remaining free cross-sections are not greater than that they could be filled liquid-tight by solder or adhesive or a similar compound material.

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 designed such that the boundary of the recesses in the inserted flow channel element extends so that the surface of the bottom region is substantially flatly continued through the boundary surface of the division region, which adjoins the recess.

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 of the outer contour of the separating element with the bottom region of the liquid container or the flow channel elements also in the region of the bushings, in which the interface of the dividing region bears against the separating element.

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 is in this way 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, the bottom area in the section of the bushings and in particular in the region of the edge regions bounding the bushings to the Interior of the liquid container carried out above. In this way, there is a positive and / or non-positive connection between the flow channel elements and the edge regions of the bushings. As a result, a liquid-tight connection between the bottom region of the liquid container and the flow channel elements, for example, by a furnace brazing process or gluing or the like, can be easily produced.

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 into a prefabricated liquid container according to the invention, the insertion depth of the flow channel elements is simply and precisely limited by the slot-shaped recesses so that exact production and, in particular, a requirement for liquid-tightness and at the same time simple production of the heat exchanger according to the invention is possible.

Bei der 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 the embodiment of the present invention, the partition member has projections which engage in recesses of the bottom portion, so that also in these areas a substantially positive connection of the bottom portion with the separating elements, which by a furnace brazing process or gluing or the like is fixed. The outer contour of the separating element follows the surface of the bottom region of the liquid container in parallel over at least 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 taken 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 are arranged substantially parallel to each other. The two flow channels are delimited from each other by the division region 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 portion 4 and a bottom portion 3, wherein according to the present invention, the liquid container receives one end of each flow channels of the flow channel elements. The liquid container is divided by a separating element 5, which is arranged in the interior of the liquid container, in at least two spaces, the 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 can be supplied to or removed from the heat exchanger.

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, which is connected via a first connection device not shown in the Heat exchanger is introduced, distributed in the first space of the liquid container to the flow channels arranged therein and passed through a forced flow through the flow channels in the second space of the liquid container. Via a second connection device, the heat exchanger medium is discharged 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 medium flowing around the heat exchanger via the inner surfaces of 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 achieve improved 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 substantially rectangular cross section, wherein the side transitions are 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 region of the liquid container has, in accordance with the number of flow channel elements, passages whose adjacent regions extend conically in a predetermined angle or curvature into the interior of 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.These feedthroughs, which are adapted substantially to the outer dimensions of the flow channel elements 2, are designed in such a way that there is a substantially form-fitting connection, which is liquid-tight after the brazing process, between the flow channel elements and the bottom region 3.

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 is substantially flush with the adjacent bottom portion of the liquid container.

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, the separating element 5 arranged in the liquid container engages in the slot-shaped embodiments 8. 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 further two separate spaces are defined in the interior of the liquid container, which are in fluid communication substantially only via the predetermined flow paths of the flow channel elements and are liquid-tight with respect to the environment.

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. In addition to the separating element 5, the bottom region 3 and the lid region 4 can be seen.

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 region 3 and the bushings 9 arranged therein. In particular, the transition between the recesses 8 and the bottom region section 10 adjoining in the middle region can be seen, which according to the previous embodiments has a predetermined angle or a predetermined curvature extends into the interior of the liquid container and its upper boundary is flush with the lower end of the recesses.

Claims (2)

  1. A heat exchanger, in particular for a motor vehicle, consisting of:
    essentially plate-shaped flow channel elements which have at least two flow channels,
    the flow channels running essentially parallel to one another and at least partially parallel to the longitudinal axis of the flow channel element (2), and
    the flow channels in the flow channel elements being divided from one another by at least one dividing area (7) which runs at least partially parallel to the longitudinal axis of the flow channel elements,
    and at least one liquid reservoir which has a cover area (4), a base area (3) and at least one separating element (5),
    the liquid reservoir having at least one connecting device through which a liquid is able to enter and leave the liquid reservoir, and
    the separating element dividing the interior of the liquid reservoir into at least two chambers in such a manner that the openings in the flow channels are joined to the chambers of the liquid reservoir in a flow connection, and
    the two chambers in the liquid reservoir being separated from one another in an essentially liquid-proof manner by the separating element, and
    the base area (3) being connected to the cover element in a liquid-proof manner and having ducts (9) through which the flow channel elements project into the interior of the liquid reservoir, and
    the dividing areas (7) having slit-shaped recesses (8) which extend from the ends of the flow channel elements having the flow channel openings essentially such a distance along the longitudinal axis of the flow channel elements that the separating element (5) engages between the flow channel elements projecting into the liquid reservoir in such a manner that an essentially liquid-proof connection exists between the walls of the flow channels and the separating element,
    the outer contour of the separating element corresponding essentially to the course of the surface of the base area of the liquid reservoir, and
    the cross-sectional area of the flow channels being essentially constant along the longitudinal axis of the flow channel elements, and
    the base area (3) in the section with the ducts (9), and in particular in the area of the edges (10) delimiting the ducts, projecting into the interior of the liquid reservoir, an essentially positive and/or non-positive connection existing between the flow channel elements and the edges of the ducts,
    characterised in that
    the separating element has projections (6) which engage in indentations in the base area such that in the area of said indentations an essentially positive connection exists between the base area and the separating element.
  2. A heat exchanger in accordance with claim 1,
    characterised in that
    the two flow channels in the flow channel elements are connected together within the flow channel elements by at least one free cross section.
EP03012559A 2002-06-14 2003-06-02 Heat exchanger Expired - Lifetime EP1371926B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10226753A DE10226753A1 (en) 2002-06-14 2002-06-14 heat exchangers
DE10226753 2002-06-14

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EP1371926A1 EP1371926A1 (en) 2003-12-17
EP1371926B1 true EP1371926B1 (en) 2006-10-11

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AT (1) ATE342481T1 (en)
DE (2) DE10226753A1 (en)
ES (1) ES2272846T3 (en)

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ATE518108T1 (en) 2004-03-05 2011-08-15 Behr Gmbh & Co Kg HEAT EXCHANGE DEVICE AND METHOD FOR PRODUCING THE SAME
DE102004027402A1 (en) * 2004-06-04 2005-12-22 Behr Gmbh & Co. Kg heat exchangers
DE102010053478B4 (en) * 2010-12-04 2018-05-30 Modine Manufacturing Co. Heat exchanger and production process for heat exchangers
JP2018100800A (en) * 2016-12-20 2018-06-28 三菱重工サーマルシステムズ株式会社 Heat exchanger and air conditioner

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JPS62153685A (en) * 1985-12-24 1987-07-08 Showa Alum Corp Heat exchanger
DE3813339C2 (en) * 1988-04-21 1997-07-24 Gea Happel Klimatechnik Heat exchangers for motor vehicles and process for its manufacture
FR2711236B1 (en) * 1993-10-12 1995-11-24 Valeo Thermique Habitacle Heat exchanger with two rows of tubes, in particular for a motor vehicle.
JPH08254399A (en) * 1995-01-19 1996-10-01 Zexel Corp Heat exchanger
DE19510283A1 (en) * 1995-03-22 1996-09-26 Behr Gmbh & Co Flat tube for a soldered heat exchanger and process for its manufacture
JPH09113175A (en) * 1995-10-16 1997-05-02 Zexel Corp Heat exchanger
FR2751403B1 (en) * 1996-07-22 1998-10-09 Valeo Thermique Moteur Sa FLAT TUBE WITH COUNTER-CURRENT CIRCULATION FOR HEAT EXCHANGER
DE19719259B4 (en) * 1997-05-07 2005-08-18 Valeo Klimatechnik Gmbh & Co. Kg Flat tube heat exchanger for motor vehicles with flat tubes held on collars of a tube plate
DE19752139B4 (en) * 1997-11-25 2004-06-03 Behr Gmbh & Co. Heat exchanger for a motor vehicle
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DE19920102B4 (en) * 1999-05-03 2009-01-02 Behr Gmbh & Co. Kg Multi-chamber tube and heat exchanger arrangement for a motor vehicle

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ES2272846T3 (en) 2007-05-01
ATE342481T1 (en) 2006-11-15
DE10226753A1 (en) 2004-01-08
DE50305322D1 (en) 2006-11-23
EP1371926A1 (en) 2003-12-17

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