EP1607709A2 - Heat exchanger, especially brazed Radiator - Google Patents

Heat exchanger, especially brazed Radiator Download PDF

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Publication number
EP1607709A2
EP1607709A2 EP05012640A EP05012640A EP1607709A2 EP 1607709 A2 EP1607709 A2 EP 1607709A2 EP 05012640 A EP05012640 A EP 05012640A EP 05012640 A EP05012640 A EP 05012640A EP 1607709 A2 EP1607709 A2 EP 1607709A2
Authority
EP
European Patent Office
Prior art keywords
flange
pipe connection
heat exchanger
connection element
element according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05012640A
Other languages
German (de)
French (fr)
Other versions
EP1607709A3 (en
Inventor
Oliver Getto
Alexander Schaudt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mahle Behr GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Publication of EP1607709A2 publication Critical patent/EP1607709A2/en
Publication of EP1607709A3 publication Critical patent/EP1607709A3/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
    • 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
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • 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
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • F28F9/0251—Massive connectors, e.g. blocks; Plate-like connectors
    • F28F9/0253—Massive connectors, e.g. blocks; Plate-like connectors with multiple channels, e.g. with combined inflow and outflow channels
    • 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
    • F28F9/0246—Arrangements for connecting header boxes with flow lines
    • F28F9/0256—Arrangements for coupling connectors with flow lines
    • F28F9/0258—Arrangements for coupling connectors with flow lines of quick acting type, e.g. with snap action
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0091—Radiators
    • F28D2021/0096—Radiators for space heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/08—Fastening; Joining by clamping or clipping
    • F28F2275/085—Fastening; Joining by clamping or clipping with snap connection
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S285/00—Pipe joints or couplings
    • Y10S285/921—Snap-fit

Definitions

  • the invention relates to a heat exchanger, in particular a soldered Heat exchanger according to the preamble of claim 1, as well as a Pipe connecting element.
  • Heat exchanger in particular radiator or heating heat exchanger for motor vehicles are the primary side of a fluid, in particular from Coolant flows through a coolant circuit of the motor vehicle, wherein the connection to the coolant circuit via connection piece at Radiator is connected to the pipe connection lines for the coolant become.
  • connection piece at Radiator is connected to the pipe connection lines for the coolant become.
  • connection piece at Radiator is connected to the pipe connection lines for the coolant become.
  • connection piece at Radiator is connected to the pipe connection lines for the coolant become.
  • connection piece at Radiator is connected to the pipe connection lines for the coolant become.
  • connection piece at Radiator is connected to the pipe connection lines for the coolant become.
  • connection piece at Radiator is connected to the pipe connection lines for the coolant become.
  • connection piece at Radiator is connected to the pipe connection lines for the coolant become.
  • connection piece at Radiator is connected to the pipe connection lines for the coolant become.
  • connection piece at Radiator is connected to the pipe connection lines for the coolant become.
  • a first flange is provided on the radiator, with a second flange in the vehicle for the coolant connection is connected.
  • the flange for brazed radiators, it is known the flange as an aluminum part produce, which is soldered to the radiator.
  • the flange in Plastic executed and formed in two parts.
  • the plastic flange is made in the form of two molded parts, which are plugged into the metal connecting pieces of the heat exchanger are preferably formed as a radiator for a motor vehicle is. Since the soldered radiator with its connecting piece made of metal, preferably Made of aluminum, would be in one piece Flange example of plastic or aluminum or a Aluminum alloy give tolerance problems concerning the socket distance - This problem is due to the division of the flange in two Flange halves, which are adjustable in their distance, solved.
  • the vehicle-side counterflange connected to the radiator flange is connected for fastening the coolant connection pipes, can therefore also be in plastic, aluminum or an aluminum alloy be executed, resulting in a further cost reduction in the heating circuit leads.
  • Fig. 1 shows a section of a radiator 1 with a collecting box 2, also called water tank.
  • the radiator 1 is designed as a soldered all-aluminum heat exchanger and is used for the heating of air for a vehicle interior of a motor vehicle, not shown.
  • the water tank 2 has two connecting pieces 3, 4, which also consist of aluminum and are soldered into corresponding passages 2a, 2b on the water tank 2. Between the two connecting pieces 3, 4 is located in the water tank 2 a partition, not shown, which causes a U-shaped flow through the not fully shown radiator 1 (deflection of the coolant "in width"). One of the two connecting pieces 3, 4 is thus the inflow and the other of the return connection.
  • the two connecting pieces 3, 4 each have a not here recognizable annular flange, via which in each case designed as an open ring retaining clip 5, 6 attacks, which is known per se, for. B. in a similar form by the aforementioned DE-A 196 48 162 of the Applicant. Both connecting pieces 3, 4 have a fixed distance a (from nozzle longitudinal axis to nozzle longitudinal axis). As far as this radiator corresponds to the prior art.
  • a spectacle-shaped Flange 7 (double flange) made of plastic, which consists of two equally formed flange halves 8, 9, wherein the flange half. 9 only incomplete (dashed) is shown.
  • the following description the flange half 8 thus applies mutatis mutandis to the flange half 9.
  • Each Flange half 8, 9 has a through hole 8a, 9a, which a the distance a corresponding distance a 'have, d. H. the through holes 8a, 9a are aligned with the connecting pieces 3, 4.
  • the Flange half 8 has on the water tank 2 side facing a Connecting piece 8b, which, in a manner not shown in the connecting piece 3 of the radiator 1 plugged by sealing means, not shown sealed and axially fixed by the retaining clip 5.
  • a Connecting piece 8b which, in a manner not shown in the connecting piece 3 of the radiator 1 plugged by sealing means, not shown sealed and axially fixed by the retaining clip 5.
  • an annular flange 8c (only partially visible), which overlapped parts of the retaining clip 5 becomes.
  • the flange 7 with its two flange halves 8, 9 with the radiator 1 mechanically and fluid, d. H. coolant retention connected.
  • the flange 7 is in a dividing plane T, indicated by a dashed line is indicated and runs at the height of half the distance a, divided.
  • the Flange half 8 has in its peripheral region in the vicinity of the dividing plane T a tab 8d, while the opposite flange half 9 in its corresponding peripheral region has a latching hook 9e, which engages in the tab 8d and locked with this.
  • On the opposite, invisible side of both flange halves 8, 9 is a corresponding Provided latching connection, wherein the tab on the flange half 9 and the locking hook on the flange half 8, that is exactly the opposite as above, is provided.
  • a metal nut 10 is inserted between the two flange halves 8, 9, which as an abutment for a screw with a not shown Counterflange is used.
  • This counter flange does not take the ends of shown coolant connection pipes and connects them with the radiator-side flange 7. This is a simple and quick installation, d. H. a quick coolant connection possible.
  • Both flange halves 8, 9 are - as mentioned - as so-called equal parts trained and can therefore be made with the same injection molding tool become.
  • the plastic is preferably PPA, PA or another plastic used.
  • Fig. 2 shows a modified embodiment of the invention with a radiator 11, consisting of a network 12 and two water boxes 13, 14.
  • this radiator 11 has a longitudinal partition wall 15 in the water tank 14, wherein on both sides of the longitudinal partition wall 15 connecting pieces 16, 17 are located.
  • the coolant flowing through the radiator 1 is thus deflected "in the depth", ie in or against the flow direction of the air flowing through the network 12.
  • the connecting pieces 16, 17 are thus arranged “obliquely” to each other.
  • a two-piece flange 18 is provided made of plastic for attachment of coolant connection pipes, not shown, which is in principle formed equal to the flange 7 of FIG.
  • the flange is preferably made of PPA consists of two flange halves 19, 20, which are also held together by a unspecified here, but similarly formed locking connection.
  • centering means are provided in the region of the graduation plane:
  • the flange half 19 or 20 therefore has a molded-on dowel pin 19a and a fitting bore 19b - a dowel pin is also offset on the other flange half 20 (dashed) and a fitting bore (not shown) is provided.
  • These centering facilitate the installation of both flange halves and allow an adaptation of the described in the embodiment of FIG. 1 distances a, a '.
  • a metal nut 21 is inserted for screwing with the counter flange, not shown.

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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)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)

Abstract

The heating unit (1) has at least two connecting supports (3,4) bearing a collecting tank (2) into which is put a spectacle-shaped flange (7) to fasten the pipe connection ducts. The flange is made of plastic and comprised of two identical clippable parts, making essentially a T-shaped plane positioned the connecting supports.

Description

Die Erfindung betrifft einen Wärmeübertrager, insbesondere einen gelöteten Wärmeübertrager nach dem Oberbegriff des Patentanspruches 1, sowie ein Rohranschlußelement.The invention relates to a heat exchanger, in particular a soldered Heat exchanger according to the preamble of claim 1, as well as a Pipe connecting element.

Wärmeübertrager, insbesondere Heizkörper oder Heizungswärmeübertrager für Kraftfahrzeuge werden primärseitig von einem Fluid, insbesondere vom Kühlmittel eines Kühlmittelkreislaufes des Kraftfahrzeuges durchströmt, wobei der Anschluss an den Kühlmittelkreislauf über Anschlussstutzen am Heizkörper erfolgt, die mit Rohranschlussleitungen für das Kühlmittel verbunden werden. Je nach Bauart des Heizkörpers bzw. seines Sammelkastens, an weichem sich die Anschlussstutzen befinden, sind verschiedene Rohranschlussverbindungen bekannt. Durch die DE-A 35 17 488 der Anmelderin wurde ein Heizkörper mit Kunststoffwasserkasten mit angespritzten Anschlussstutzen bekannt, in welche Kühlmittelanschlussrohre eingesteckt und über eine Sicherungsklammer, eine so genannte Steckgabel gesichert sind. Ähnliche Rohranschlussverbindungen wurden durch die DE-C 197 37 704 der Anmelderin bekannt. Bei gelöteten Heizkörpern besteht auch der Wasserkasten aus Metall, vorzugsweise aus Aluminium und ebenso die Anschlussstutzen, welche in den Wasserkasten eingelötet sind. Die für Kunststoffstutzen bekannte Steckgabelverbindung wurde in abgewandelter Form auf metallische Anschlussstutzen übertragen, wie in der DE-A 44 03 402, der DE-C 196 21 282 oder der DE-A 197 40 115 oder der DE-A 197 52 139 der Anmelderin vorgeschlagen. Heat exchanger, in particular radiator or heating heat exchanger for motor vehicles are the primary side of a fluid, in particular from Coolant flows through a coolant circuit of the motor vehicle, wherein the connection to the coolant circuit via connection piece at Radiator is connected to the pipe connection lines for the coolant become. Depending on the design of the radiator or its collecting tank, At the soft the connecting pieces are, are different pipe connections known. By the DE-A 35 17 488 of the applicant was a radiator with plastic water box with molded connection known, in which coolant connection pipes plugged in and secured by a securing clip, a so-called plug-in fork. Similar pipe connections were made by DE-C 197 37 704 the applicant known. For brazed radiators, there is also the water box made of metal, preferably of aluminum and also the connecting pieces, which are soldered into the water box. The for plastic nozzles known plug-in fork connection was in a modified form transferred to metallic connecting pieces, as in DE-A 44 03 402, the DE-C 196 21 282 or DE-A 197 40 115 or DE-A 197 52 139 of Applicant proposed.

Eine andere Form eines Rohranschlusses wurde durch die DE-A 196 48 162 der Anmelderin bekannt, und zwar für einen gelöteten Heizkörper mit in den Wasserkasten eingelöteten Anschlussstutzen. Die Kühlmittelanschlussrohre sind in die Anschlussstutzen eingesteckt und mittels O-Ringen abgedichtet, wobei eine axiale Fixierung des Anschlussrohres im heizkörperseitigen Anschlussstutzen durch einen so genannten Halteklammerring erfolgt, welcher einen Ringwulst am Anschlussrohr und einen Ringflansch am Anschlussstutzen übergreift. Diese Art von Steckverbindungen erlaubt eine schnelle Montage, d. h. einen schnellen Anschluss der Kühlmittelrohre an den Heizkörper im Fahrzeug. Um die Montage weiter zu vereinfachen ist es auch bekannt, die Kühlmittelanschlussrohre mit dem Heizkörper über einen Flansch zu verbinden, in welchem das Zufluss- und das Rückflussrohr zusammengefasst sind. Dabei ist ein erster Flansch am Heizkörper vorgesehen, der mit einem zweiten Flansch im Fahrzeug zur Herstellung des Kühlmittelanschlusses verbunden wird. Für gelötete Heizkörper ist es bekannt, den Flansch als Aluminiumteil herzustellen, welches mit dem Heizkörper verlötet wird. Diese Lösung ist relativ teuer.Another form of pipe connection was made by DE-A 196 48 162 the Applicant known, for a soldered radiator in the Water tank soldered connection piece. The coolant connection pipes are inserted in the connecting pieces and sealed with O-rings, wherein an axial fixation of the connection pipe in the radiator side connecting piece is done by a so-called retaining clip ring, which an annular bead on the connecting pipe and an annular flange on the connecting piece overlaps. This type of connectors allows quick installation, d. H. a quick connection of the coolant pipes to the radiator in the vehicle. To further simplify the assembly, it is also known connect the coolant connection pipes to the radiator via a flange, in which the inflow and the return tube are summarized are. In this case, a first flange is provided on the radiator, with a second flange in the vehicle for the coolant connection is connected. For brazed radiators, it is known the flange as an aluminum part produce, which is soldered to the radiator. These Solution is relatively expensive.

Es ist Aufgabe der vorliegenden Erfindung, einen Wärmeübertrager oder ein Rohranschlußelement der eingangs genannten Art hinsichtlich seiner Rohranschlussverbindung einfacher und kostengünstiger zu gestalten.It is an object of the present invention, a heat exchanger or a Pipe connection element of the type mentioned above with regard to its pipe connection easier and cheaper to design.

Diese Aufgabe wird durch die Merkmale des Patenanspruches 1 oder des Anspruchs 11 gelöst. Erfindungsgemäß ist vorgesehen, dass der Flansch in Kunststoff ausgeführt und zweiteilig ausgebildet ist. Durch die Wahl von Kunststoff als Werkstoff kann der Flansch mit geringeren Kosten hergestellt werden. Der Kunststoffflansch wird in Form von zwei Spritzteilen hergestellt, welche in die metallischen Anschlussstutzen des Wärmeübertragers gesteckt werden, der vorzugsweise als Heizkörper für ein Kraftfahrzeug ausgebildet ist. Da der gelötete Heizkörper mit seinen Anschlussstutzen aus Metall, vorzugsweise aus Aluminium besteht, würden sich bei einem einstückigen Flansch beispielsweise aus Kunststoff oder auch aus Aluminium oder einer Aluminiumlegierung Toleranzprobleme bezüglich des Stutzenabstandes ergeben - dieses Problem ist durch die Teilung des Flansches in zwei Flanschhälften, welche in ihrem Abstand einstellbar sind, gelöst. Durch die Zweistückigkeit bzw. Teilung kann der Flansch mit seinen Verbindungsstutzen an den vorgegebenen Abstand der Heizkörperanschlussstutzen angepasst werden. Damit ergeben sich geringere Herstellkosten für den Heizkörper einschließlich Heizkörperflansch bei gleicher Funktion gegenüber dem Stand der Technik. Der fahrzeugseitige Gegenflansch, der mit dem Heizkörperflansch zur Befestigung der Kühlmittelanschlussrohre verbunden wird, kann somit auch in Kunststoff, Aluminium oder einer Aluminiumlegierung ausgeführt werden, was zu einer weiteren Kostenreduzierung im Heizungskreislauf führt.This object is achieved by the features of patent claim 1 or of Claim 11 solved. According to the invention it is provided that the flange in Plastic executed and formed in two parts. By the choice of Plastic as a material, the flange can be produced at a lower cost become. The plastic flange is made in the form of two molded parts, which are plugged into the metal connecting pieces of the heat exchanger are preferably formed as a radiator for a motor vehicle is. Since the soldered radiator with its connecting piece made of metal, preferably Made of aluminum, would be in one piece Flange example of plastic or aluminum or a Aluminum alloy give tolerance problems concerning the socket distance - This problem is due to the division of the flange in two Flange halves, which are adjustable in their distance, solved. By the Zweistückigkeit or division of the flange with its connection piece adapted to the specified distance of the radiator connection piece become. This results in lower production costs for the radiator including radiator flange with the same function over the State of the art. The vehicle-side counterflange connected to the radiator flange is connected for fastening the coolant connection pipes, can therefore also be in plastic, aluminum or an aluminum alloy be executed, resulting in a further cost reduction in the heating circuit leads.

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

Fig. 1
einen Ausschnitt eines Heizkörpers mit Anschlussstutzen und Heizkörperflansch und
Fig. 2
einen abgeänderten Heizkörper mit Anschlussstutzen und Heizkörperflansch.
An embodiment of the invention is illustrated in the drawing and will be described in more detail below. Show it
Fig. 1
a section of a radiator with connection piece and radiator flange and
Fig. 2
a modified radiator with connection piece and radiator flange.

Fig. 1 zeigt einen Ausschnitt eines Heizkörpers 1 mit einem Sammelkasten 2, auch Wasserkasten genannt. Der Heizkörper 1 ist als gelöteter Ganzaluminiumwärmeübertrager ausgebildet und wird für die Erwärmung von Luft für einen nicht dargestellten Fahrzeuginnenraum eines Kraftfahrzeuges verwendet. Der Wasserkasten 2 weist zwei Anschlussstutzen 3, 4 auf, welche ebenfalls aus Aluminium bestehen und in entsprechende Durchzüge 2a, 2b am Wasserkasten 2 eingelötet sind. Zwischen den beiden Anschlussstutzen 3, 4 befindet sich im Wasserkasten 2 eine nicht dargestellte Trennwand, welche eine U-förmige Durchströmung des nicht vollständig dargestellten Heizkörpers 1 bewirkt (Umlenkung des Kühlmittels "in der Breite"). Einer der beiden Anschlussstutzen 3, 4 ist somit der Zufluss- und der andere der Rückflussstutzen. Die beiden Anschlussstutzen 3, 4 weisen jeweils einen hier nicht erkennbaren Ringflansch auf, über welchen jeweils eine als offener Ring ausgebildete Halteklammer 5, 6 greift, welche an sich bekannt ist, z. B. in ähnlicher Form durch die eingangs genannte DE-A 196 48 162 der Anmelderin. Beide Anschlussstutzen 3, 4 haben einen festen Abstand a (von Stutzenlängsachse zu Stutzenlängsachse). Soweit entspricht dieser Heizkörper dem Stand der Technik. Fig. 1 shows a section of a radiator 1 with a collecting box 2, also called water tank. The radiator 1 is designed as a soldered all-aluminum heat exchanger and is used for the heating of air for a vehicle interior of a motor vehicle, not shown. The water tank 2 has two connecting pieces 3, 4, which also consist of aluminum and are soldered into corresponding passages 2a, 2b on the water tank 2. Between the two connecting pieces 3, 4 is located in the water tank 2 a partition, not shown, which causes a U-shaped flow through the not fully shown radiator 1 (deflection of the coolant "in width"). One of the two connecting pieces 3, 4 is thus the inflow and the other of the return connection. The two connecting pieces 3, 4 each have a not here recognizable annular flange, via which in each case designed as an open ring retaining clip 5, 6 attacks, which is known per se, for. B. in a similar form by the aforementioned DE-A 196 48 162 of the Applicant. Both connecting pieces 3, 4 have a fixed distance a (from nozzle longitudinal axis to nozzle longitudinal axis). As far as this radiator corresponds to the prior art.

Erfindungsgemäß wird mit dem Heizkörper 1 ein brillenförmig ausgebildeter Flansch 7 (Doppelflansch) aus Kunststoff verbunden, welcher aus zwei gleich ausgebildeten Flanschhälften 8, 9 besteht, wobei die Flanschhälfte 9 nur unvollständig (gestrichelt) dargestellt ist. Die nachfolgende Beschreibung der Flanschhälfte 8 gilt somit sinngemäß auch für die Flanschhälfte 9. Jede Flanschhälfte 8, 9 weist eine Durchgangsbohrung 8a, 9a auf, welche einen dem Abstand a entsprechenden Abstand a' aufweisen, d. h. die Durchgangsbohrungen 8a, 9a fluchten mit den Anschlussstutzen 3, 4. Die Flanschhälfte 8 weist auf der dem Wasserkasten 2 zugewandten Seite einen Verbindungsstutzen 8b auf, welcher in nicht dargestellter Weise in den Anschlussstutzen 3 des Heizkörpers 1 gesteckt, durch nicht dargestellte Dichtmittel abgedichtet und durch die Halteklammer 5 axial fixiert wird. Hierfür ist am stirnseitigen Ende des Verbindungsstutzens 8b ein Ringflansch 8c (nur teilweise sichtbar) angeordnet, welcher von Teilen der Halteklammer 5 übergriffen wird. Auf diese Weise ist der Flansch 7 mit seinen beiden Flanschhälften 8, 9 mit dem Heizkörper 1 mechanisch und fluid-, d. h. kühlmitteldicht verbunden.According to the invention with the radiator 1 is a spectacle-shaped Flange 7 (double flange) made of plastic, which consists of two equally formed flange halves 8, 9, wherein the flange half. 9 only incomplete (dashed) is shown. The following description the flange half 8 thus applies mutatis mutandis to the flange half 9. Each Flange half 8, 9 has a through hole 8a, 9a, which a the distance a corresponding distance a 'have, d. H. the through holes 8a, 9a are aligned with the connecting pieces 3, 4. The Flange half 8 has on the water tank 2 side facing a Connecting piece 8b, which, in a manner not shown in the connecting piece 3 of the radiator 1 plugged by sealing means, not shown sealed and axially fixed by the retaining clip 5. For this is at the front end of the connecting piece 8b an annular flange 8c (only partially visible), which overlapped parts of the retaining clip 5 becomes. In this way, the flange 7 with its two flange halves 8, 9 with the radiator 1 mechanically and fluid, d. H. coolant retention connected.

Der Flansch 7 ist in einer Teilungsebene T, die durch eine gestrichelte Linie angedeutet ist und auf der Höhe des halben Abstandes a verläuft, geteilt. Die Flanschhälfte 8 weist in ihrem Umfangsbereich in der Nähe der Teilungsebene T eine Lasche 8d auf, während die gegenüberliegende Flanschhälfte 9 in ihrem korrespondierenden Umfangsbereich einen Rasthaken 9e aufweist, welcher in die Lasche 8d eingreift und mit dieser verrastet. Auf der gegenüberliegenden, nicht sichtbaren Seite beider Flanschhälften 8, 9 ist eine entsprechende Rastverbindung vorgesehen, wobei die Lasche an der Flanschhälfte 9 und der Rasthaken an der Flanschhälfte 8, also genau umgekehrt wie oben, vorgesehen ist. Durch diese beiderseitigen Rastverbindung werden beide Flanschhälften 8, 9 zusammengehalten. Im Bereich der Teilungsebene T ist zwischen beiden Flanschhälften 8, 9 eine Blechmutter 10 eingelegt, welche als Widerlager für eine Schraubverbindung mit einem nicht dargestellten Gegenflansch dient. Dieser Gegenflansch nimmt die Enden von nicht dargestellten Kühlmittelanschlussrohren auf und verbindet diese mit dem heizkörperseitigen Flansch 7. Damit ist eine einfache und schnelle Montage, d. h. ein schneller Kühlmittelanschluss möglich.The flange 7 is in a dividing plane T, indicated by a dashed line is indicated and runs at the height of half the distance a, divided. The Flange half 8 has in its peripheral region in the vicinity of the dividing plane T a tab 8d, while the opposite flange half 9 in its corresponding peripheral region has a latching hook 9e, which engages in the tab 8d and locked with this. On the opposite, invisible side of both flange halves 8, 9 is a corresponding Provided latching connection, wherein the tab on the flange half 9 and the locking hook on the flange half 8, that is exactly the opposite as above, is provided. By this mutual locking connection will be both flange halves 8, 9 held together. In the division level T is a metal nut 10 is inserted between the two flange halves 8, 9, which as an abutment for a screw with a not shown Counterflange is used. This counter flange does not take the ends of shown coolant connection pipes and connects them with the radiator-side flange 7. This is a simple and quick installation, d. H. a quick coolant connection possible.

Beide Flanschhälften 8, 9 sind - wie erwähnt - als so genannte Gleichteile ausgebildet und können daher mit demselben Spritzwerkzeug hergestellt werden. Als Kunststoff wird vorzugsweise PPA, PA oder ein anderer Kunststoff verwendet.Both flange halves 8, 9 are - as mentioned - as so-called equal parts trained and can therefore be made with the same injection molding tool become. The plastic is preferably PPA, PA or another plastic used.

Die Montage des Heizkörperflansches 7 erfolgt durch Einsetzen des Verbindungsstutzens 8b und des zweiten nicht dargestellten Verbindungsstutzens in die heizkörperseitigen Anschlussstutzen 3, 4 mit anschließender axialer Verriegelung durch die Halteklammern 5, 6. Bei dieser Montage ist der Abstand a' der beiden Flanschhälften 8, 9 bzw. ihrer Durchgangsbohrungen 8a, 9a noch etwas variabel, d. h. an den Abstand a der heizkörperseitigen Anschlussstutzen 3, 4 anpassbar. Die beiden Rastverbindungen sind somit noch nicht geschlossen - dies erfolgt erst, wenn beide Verbindungsstutzen der Flanschhälften 8, 9 zentrisch bzw. koaxial von den heizkörperseitigen Anschlussstutzen aufgenommen sind. Aufgrund dieser Variabilität des Abstandes a' des Flansches 7 können Toleranzprobleme zwischen dem Kunststoffflansch 7 und dem Aluminiumheizkörper 1 ausgeschaltet werden. Wäre der Kunststoffflansch 7 einstückig, d. h. nicht geteilt, müsste man mit fertigungs- und werkstoffbedingten Abweichungen der Maße a auf der Heizkörperseite und a' auf der Flanschseite rechnen, die bei nicht vorhandener Ausgleichsmöglichkeit zu Verkantungen, Verklemmungen, Spannungen und/oder Undichtigkeiten führen würden. Diese Probleme sind durch die erfindungsgemäße Teilung des Flansches behoben.The installation of the Heizkörperflansches 7 takes place by inserting the connecting piece 8b and the second connecting piece, not shown in the radiator side connecting pieces 3, 4 with subsequent axial Locking by the retaining clips 5, 6. In this assembly, the distance a 'of the two flange halves 8, 9 and their through-holes 8a, 9a still somewhat variable, d. H. at the distance a of the radiator side connecting piece 3, 4 customizable. The two locking connections are thus not yet closed - this only happens when both connection pieces the flange halves 8, 9 centrally or coaxially from the radiator side Connecting pieces are included. Because of this variability of the distance a 'of the flange 7 can tolerance problems between the plastic flange 7 and the aluminum radiator 1 are turned off. Would the plastic flange 7 in one piece, d. H. not shared, you would have to deal with manufacturing and material-related deviations of the dimensions a on the radiator side and a 'on the flange side, which can not be compensated to tilting, jamming, tension and / or Leaks would lead. These problems are due to the invention Fixed pitch of the flange.

Fig. 2 zeigt ein abgewandeltes Ausführungsbeispiel der Erfindung mit einem Heizkörper 11, bestehend aus einem Netz 12 und zwei Wasserkästen 13, 14. In Abwandlung zum vorherigen Ausführungsbeispiel weist dieser Heizkörper 11 eine Längstrennwand 15 im Wasserkasten 14 auf, wobei sich beiderseits der Längstrennwand 15 Anschlussstutzen 16, 17 befinden. Das den Heizkörper 1 durchströmende Kühlmittel wird somit "in der Tiefe", d. h. in oder entgegen der Strömungsrichtung der das Netz 12 durchströmenden Luft umgelenkt. Die Anschlussstutzen 16, 17 sind somit "schräg" zueinander angeordnet. Auch bei dieser Anordnung ist ein zweiteiliger Flansch 18 aus Kunststoff zur Befestigung von nicht dargestellten Kühlmittelanschlussrohren vorgesehen, welcher prinzipiell gleich gegenüber dem Flansch 7 gemäß Fig. 1 ausgebildet ist. Der vorzugsweise aus PPA hergestellte Flansch besteht aus zwei Flanschhälften 19, 20, welche ebenfalls durch eine hier nicht näher bezeichnete, jedoch ähnlich ausgebildete Rastverbindung zusammengehalten werden. Um die beiden Flanschhälften 19, 20 besser fügen zu können, sind im Bereich der Teilungsebene Zentriermittel vorgesehen: Die Flanschhälfte 19 oder 20 weist daher einen angespritzten Passstift 19a und eine Passbohrung 19b auf - seitenversetzt sind an der anderen Flanschhälfte 20 (gestrichelt) ebenfalls ein Passstift und eine Passbohrung (nicht dargestellt) vorgesehen. Diese Zentriermittel erleichtern die Montage beider Flanschhälften und erlauben eine Anpassung der zum Ausführungsbeispiel gemäß Fig. 1 beschriebenen Abstände a, a'. Auch in den Flansch 18 ist eine Blechmutter 21 zur Verschraubung mit dem nicht dargestellten Gegenflansch eingelegt. Fig. 2 shows a modified embodiment of the invention with a radiator 11, consisting of a network 12 and two water boxes 13, 14. In a modification to the previous embodiment, this radiator 11 has a longitudinal partition wall 15 in the water tank 14, wherein on both sides of the longitudinal partition wall 15 connecting pieces 16, 17 are located. The coolant flowing through the radiator 1 is thus deflected "in the depth", ie in or against the flow direction of the air flowing through the network 12. The connecting pieces 16, 17 are thus arranged "obliquely" to each other. Also in this arrangement, a two-piece flange 18 is provided made of plastic for attachment of coolant connection pipes, not shown, which is in principle formed equal to the flange 7 of FIG. The flange is preferably made of PPA consists of two flange halves 19, 20, which are also held together by a unspecified here, but similarly formed locking connection. In order to be able to better fit the two flange halves 19, 20, centering means are provided in the region of the graduation plane: The flange half 19 or 20 therefore has a molded-on dowel pin 19a and a fitting bore 19b - a dowel pin is also offset on the other flange half 20 (dashed) and a fitting bore (not shown) is provided. These centering facilitate the installation of both flange halves and allow an adaptation of the described in the embodiment of FIG. 1 distances a, a '. Also in the flange 18, a metal nut 21 is inserted for screwing with the counter flange, not shown.

Claims (20)

Wärmeübertrager, insbesondere gelöteter Heizkörper (1) für Kraftfahrzeuge mit mindestens einem zwei Anschlussstutzen (3, 4) aufweisenden Sammelkasten (2), wobei in die Anschlussstutzen (3, 4), die benachbart in einem Abstand a zueinander angeordnet sind, ein brillenförmiger Flansch (7) zum Befestigen von Rohranschlussleitungen einsetzbar ist, dadurch gekennzeichnet, dass der Flansch (7, 18) aus Kunststoff herstellbar und zweiteilig ausgebildet ist, indem er im Wesentlichen in einer Ebene T geteilt ist, die zwischen, vorzugsweise auf halbem Abstand a zwischen den Anschlussstutzen (3, 4) angeordnet ist.Heat exchanger, in particular brazed radiator (1) for motor vehicles with at least one two connecting pieces (3, 4) having collecting box (2), wherein in the connecting pieces (3, 4) which are adjacent to each other at a distance a, a spectacle-shaped flange ( 7) is used for fastening pipe connection lines, characterized in that the flange (7, 18) is made of plastic producible and two-part by being substantially divided in a plane T, the between, preferably at half distance a between the connecting piece (3, 4) is arranged. Wärmeübertrager nach Anspruch 1, dadurch gekennzeichnet, dass der Flansch (7, 18) aus zwei gleich ausgebildeten, miteinander verrastbaren Flanschhälften (8, 9; 19, 20) besteht.Heat exchanger according to claim 1, characterized in that the flange (7, 18) consists of two identically designed, mutually latchable flange halves (8, 9, 19, 20). Wärmeübertrager nach Anspruch 2, dadurch gekennzeichnet, dass die Flanschhälften (8, 9; 19, 20) als gleiche Spritzteile aus einem Werkzeug herstellbar sind.Heat exchanger according to claim 2, characterized in that the flange halves (8, 9, 19, 20) can be produced as the same molded parts from a tool. Wärmeübertrager nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, dass der Flansch (7, 18) aus PPA herstellbar ist.Heat exchanger according to claim 1, 2 or 3, characterized in that the flange (7, 18) is made of PPA. Wärmeübertrager nach Anspruch 2, 3 oder 4, dadurch gekennzeichnet, dass jeweils eine Flanschhälfte (8, 9) umfangseitig eine über die Teilungsebene T hinausragende Lasche (8d) und auf der diametral gegenüberliegenden Umfangsseite einen Rasthaken (9e) aufweist und dass beide Flanschhälfte (8, 9) über Lasche (8d) und Rasthaken (9e) verrastbar sind.Heat exchanger according to claim 2, 3 or 4, characterized in that in each case a flange half (8, 9) on the circumference side over the dividing plane T protruding tab (8d) and on the diametrically opposite peripheral side has a latching hook (9e) and that both flange half (8th , 9) can be latched via tab (8d) and latching hooks (9e). Wärmeübertrager nach Anspruch 5, dadurch gekennzeichnet, dass im Bereich der Teilungsebene T Passstifte (19a) und Passbohrungen (19b) angeordnet sind und dass beide Flanschhälften (19, 20) über die Passstifte und Passbohrungen zueinander positionierbar sind.Heat exchanger according to claim 5, characterized in that in the region of the division plane T dowel pins (19a) and fitting holes (19b) are arranged and that both flange halves (19, 20) on the dowel pins and fitting holes are positioned to each other. Wärmeübertrager nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, dass die Flanschhälften (8, 9) Verbindungsstutzen (8b) aufweisen, welche von den Anschlussstutzen (3, 4) aufnehmbar sind.Heat exchanger according to one of claims 2 to 6, characterized in that the flange halves (8, 9) have connecting pieces (8b) which can be received by the connecting pieces (3, 4). Wärmeübertrager nach Anspruch 7, dadurch gekennzeichnet, dass die Verbindungsstutzen (8b) über Halteelemente, vorzugsweise elastisch verformbare Klammerelemente (5) in axialer Richtung fixierbar sind.Heat exchanger according to claim 7, characterized in that the connecting piece (8b) via retaining elements, preferably elastically deformable clamping elements (5) are fixable in the axial direction. Wärmeübertrager nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Flansch (7, 18) im Bereich der Teilungsebene T eine eingelegte Mutter (10, 21) zur Verschraubung mit einem Gegenflansch für die Rohranschlussleitungen aufweist.Heat exchanger according to one of the preceding claims, characterized in that the flange (7, 18) in the region of the dividing plane T has an inserted nut (10, 21) for screwing with a counter flange for the pipe connection lines. Wärmeübertrager nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, dass die Verbindungsstutzen (8b) einen Abstand a' zueinander aufweisen, der dem Abstand a der Anschlussstutzen (3, 4) entspricht und durch die Rastmittel respektive Lasche und Rasthaken (8d, 9e) einstellbar ist.Heat exchanger according to one of claims 7 to 9, characterized in that the connecting piece (8b) have a distance a 'to each other, which corresponds to the distance a of the connecting piece (3, 4) and by the locking means respectively tab and latching hooks (8d, 9e) is adjustable. Rohranschlußelement mit einem brillenförmiger Flansch (7) zum Befestigen von Rohranschlussleitungen, dadurch gekennzeichnet, dass der Flansch (7, 18) aus Kunststoff herstellbar und zweiteilig ausgebildet ist, indem er im Wesentlichen in einer Ebene T geteilt ist, die zwischen, vorzugsweise auf halbem Abstand a zwischen den Anschlussstutzen (3, 4) angeordnet ist. Pipe connection element with a spectacle-shaped flange (7) for fixing pipe connection lines, characterized in that the flange (7, 18) is made of plastic producible and two-part by being substantially divided in a plane T, the between, preferably at half distance a is arranged between the connecting pieces (3, 4). Rohranschlußelement nach Anspruch 11, dadurch gekennzeichnet, dass der Flansch (7, 18) aus zwei gleich ausgebildeten, miteinander verrastbaren Flanschhälften (8, 9; 19, 20) besteht.Pipe connection element according to claim 11, characterized in that the flange (7, 18) consists of two identically formed, mutually latchable flange halves (8, 9, 19, 20). Rohranschlußelement nach Anspruch 12, dadurch gekennzeichnet, dass die Flanschhälften (8, 9; 19, 20) als gleiche Spritzteile aus einem Werkzeug herstellbar sind.Pipe connection element according to claim 12, characterized in that the flange halves (8, 9, 19, 20) can be produced as the same injection-molded parts from a tool. Rohranschlußelement nach Anspruch 11, 12 oder 13, dadurch gekennzeichnet, dass der Flansch (7, 18) aus PPA herstellbar ist.Pipe connection element according to claim 11, 12 or 13, characterized in that the flange (7, 18) is made of PPA. Rohranschlußelement nach Anspruch 12, 13 oder 14, dadurch gekennzeichnet, dass jeweils eine Flanschhälfte (8, 9) umfangseitig eine über die Teilungsebene T hinausragende Lasche (8d) und auf der diametral gegenüberliegenden Umfangsseite einen Rasthaken (9e) aufweist und dass beide Flanschhälfte (8, 9) über Lasche (8d) und Rasthaken (9e) verrastbar sind.Pipe connection element according to claim 12, 13 or 14, characterized in that in each case one flange half (8, 9) has on the circumference a clip (8d) projecting beyond the dividing plane T and on the diametrically opposite circumferential side a latching hook (9e) and in that both flange half (8th) , 9) can be latched via tab (8d) and latching hooks (9e). Rohranschlußelement nach Anspruch 15, dadurch gekennzeichnet, dass im Bereich der Teilungsebene T Passstifte (19a) und Passbohrungen (19b) angeordnet sind und dass beide Flanschhälften (19, 20) über die Passstifte und Passbohrungen zueinander positionierbar sind.Pipe connection element according to claim 15, characterized in that in the region of the division plane T dowel pins (19a) and fitting holes (19b) are arranged and that both flange halves (19, 20) on the dowel pins and fitting holes are positioned to each other. Rohranschlußelement nach einem der Ansprüche 12 bis 16, dadurch gekennzeichnet, dass die Flanschhälften (8, 9) Verbindungsstutzen (8b) aufweisen, welche von Rohranschlussstutzen aufnehmbar sind.Pipe connection element according to one of Claims 12 to 16, characterized in that the flange halves (8, 9) have connection stubs (8b) which can be received by pipe connection stubs. Rohranschlußelement nach Anspruch 17, dadurch gekennzeichnet, dass die Verbindungsstutzen (8b) über Halteelemente, vorzugsweise elastisch verformbare Klammerelemente (5) in axialer Richtung fixierbar sind.Pipe connection element according to claim 17, characterized in that the connecting pieces (8b) can be fixed in the axial direction via holding elements, preferably elastically deformable clamping elements (5). Rohranschlußelement nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Flansch (7, 18) im Bereich der Teilungsebene T eine eingelegte Mutter (10, 21) zur Verschraubung mit einem Gegenflansch für die Rohranschlussleitungen aufweist.Pipe connection element according to one of the preceding claims, characterized in that the flange (7, 18) in the region of the dividing plane T has an inserted nut (10, 21) for screwing to a counter flange for the pipe connection lines. Rohranschlußelement nach einem der Ansprüche 17 bis 19, dadurch gekennzeichnet, dass die Verbindungsstutzen (8b) einen Abstand a' zueinander aufweisen, der dem Abstand a der Anschlussstutzen entspricht und durch die Rastmittel respektive Lasche und Rasthaken (8d, 9e) einstellbar ist.Pipe connection element according to one of claims 17 to 19, characterized in that the connecting piece (8b) have a distance a 'to each other, which corresponds to the distance a of the connecting piece and by the latching means respectively tab and latching hooks (8d, 9e) is adjustable.
EP05012640A 2004-06-15 2005-06-13 Heat exchanger, especially brazed Radiator Withdrawn EP1607709A3 (en)

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US20060006642A1 (en) 2006-01-12
EP1607709A3 (en) 2009-11-11
US7604258B2 (en) 2009-10-20
DE102004028655A1 (en) 2006-01-05

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