EP1568959B1 - Brazed heat exchanger, especially condenser for automobiles - Google Patents

Brazed heat exchanger, especially condenser for automobiles Download PDF

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Publication number
EP1568959B1
EP1568959B1 EP04004129.5A EP04004129A EP1568959B1 EP 1568959 B1 EP1568959 B1 EP 1568959B1 EP 04004129 A EP04004129 A EP 04004129A EP 1568959 B1 EP1568959 B1 EP 1568959B1
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EP
European Patent Office
Prior art keywords
flange
heat exchanger
manifold
condenser
connection
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
EP04004129.5A
Other languages
German (de)
French (fr)
Other versions
EP1568959A1 (en
Inventor
Pedro Gonzàlez Rechea
Jean-Claude Meyer
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
Mahle Behr France Hambach SAS
Original Assignee
Mahle Behr GmbH and Co KG
Mahle Behr France Hambach SAS
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 Mahle Behr GmbH and Co KG, Mahle Behr France Hambach SAS filed Critical Mahle Behr GmbH and Co KG
Priority to EP04004129.5A priority Critical patent/EP1568959B1/en
Priority to PCT/EP2005/001955 priority patent/WO2005080903A1/en
Priority to US10/590,487 priority patent/US7900693B2/en
Priority to CN2005800126719A priority patent/CN1950662B/en
Publication of EP1568959A1 publication Critical patent/EP1568959A1/en
Application granted granted Critical
Publication of EP1568959B1 publication Critical patent/EP1568959B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • F28F9/002—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core with fastening means for other structures
    • 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
    • F28F9/0256—Arrangements for coupling connectors with flow lines
    • 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
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • 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
    • F28D2021/0084—Condensers

Definitions

  • the invention relates to a brazed heat exchanger, in particular a condenser for motor vehicles with at least one collecting tube and a flange attached to the manifold for receiving connecting pipes according to the preamble of claim 1.
  • a brazed heat exchanger in particular a condenser for motor vehicles with at least one collecting tube and a flange attached to the manifold for receiving connecting pipes according to the preamble of claim 1.
  • US 2003/6173069 A1 discloses such a heat exchanger.
  • the condenser consists of a tube / fin block and laterally arranged collecting pipes.
  • the known capacitor also has a connection flange for connection of refrigerant lines of a refrigerant circuit.
  • the connecting flange is connected by means of a holding plate via rivets or screws with the tube / fin block of the capacitor.
  • a connecting pipe for the refrigerant inlet is arranged between the connection flange and a manifold.
  • the connection flange is connected to a refrigerant outlet pipe of the condenser.
  • the attached to the condenser flange thus represents the interface to the refrigerant circuit of the motor vehicle.
  • the disadvantage is the attachment by rivets or screws in the tube / rib block, which can lead to damage or leaks.
  • additional assembly steps for the attachment of the retaining plate on the tube / rib block and the connecting flange on the holding plate required.
  • Such refrigerant condensers consist essentially of aluminum parts, which are soldered together to form a finished heat exchanger.
  • the goal and at the same time problem in the soldering is to position and fix all parts to each other so that they can be soldered in the brazing furnace without additional Löt Anlagen or soldering or as few such devices.
  • connection flange is a heat exchanger, in particular a soldered refrigerant condenser described with at least one collecting tube to which a connecting flange can be fixed and soldered.
  • the connecting flange is preferably produced by extrusion and has a one-piece holder which clampingly surrounds the collecting tube and forms a soldering surface with the latter.
  • the connection flange is connected to the manifold via two connecting pipes for the refrigerant inlet and the refrigerant outlet. In this position, the capacitor is soldered together with connecting tubes and flange. It thus has a common flange for connection to a refrigerant inlet and outlet line of a refrigerant circuit. Due to the integral formation of holder and flange as an extrusion part, the connection positions are limited.
  • the flange is laterally offset relative to the manifold or the block consisting of tubes and ribs.
  • installation height or width can be saved when installing the capacitor.
  • the lateral arrangement is achieved in that the holders have transversely to the collecting tube projecting retaining arms on which the connecting flange is held.
  • the connecting flange on one or more holding lugs which advantageously have guide and retaining grooves.
  • the holders themselves are inserted into corresponding slots in the manifold and caulked there by flags (approaches to the holders).
  • flags approximately to the holders.
  • the holders are fixed to the headers.
  • a further fixation of the connection flange takes place through the connecting pipes, which are inserted on the one hand into corresponding openings in the collecting pipe and on the other hand are inserted into connecting openings in the flange.
  • connection flange can be produced by extrusion or extrusion - so that the manufacturing costs be lowered; however, the blank is subsequently machined, ie milled and drilled. It is thus also possible to realize deflections of the refrigerant within the flange by 90 degrees.
  • the flange in its raw form can also be made by forging or casting.
  • Fig. 1 shows a condenser 1 of an air conditioner, not shown, for a motor vehicle.
  • the condenser has a block 2, consisting of unspecified flat tubes and corrugated fins, with an end face 2a, wherein the flat tubes open with their ends in laterally arranged manifolds 3, 4.
  • the condenser 1 flows through the primary side of refrigerant of a refrigerant circuit, not shown, and connected via a connection flange 5 to the refrigerant circuit.
  • the connecting flange 5 is connected via a first connecting pipe 6 for the entry of the refrigerant to the upper part of the collecting tank 3 and via a second connecting pipe 7 for the exit of the refrigerant from the condenser 1 to the lower part of the collecting pipe 3.
  • the condenser 1 is in the position shown, ie installed with approximately horizontally arranged tubes or vertically arranged manifolds 3, 4 in the vehicle and fastened there via tabs 8.
  • Fig. 2 shows an enlarged section Fig. 1 with the connection flange 5, which is attached to the manifold 3.
  • the connecting flange 5 serves for the refrigerant side connection of the condenser 1 to the refrigerant circuit, not shown, of the motor vehicle air conditioning system and thus constitutes an interface.
  • the flange 5 therefore has four openings for the passage of the refrigerant, namely a first connection opening 9 for the entry of the refrigerant (from the refrigerant circuit) and a second connection opening 10 for the exit of the refrigerant (in the refrigerant circuit), further comprises a connection opening 11 for receiving the connecting pipe 6 and a connection opening 12th for receiving the connecting pipe 7.
  • the connecting pipe 6 opens into a non-illustrated inlet chamber of the manifold 3 and the connecting pipe 7 in a likewise unspecified outlet chamber of the manifold 3; the subdivision of the headers in chambers by partitions is known from the prior art.
  • the connection openings 9, 10 are closed by plugs 9a, 10a for the transport of the condenser 1 - they are removed when connecting the condenser to a counter flange, not shown, of the refrigerant circuit.
  • the fastening eyes 9b, 10b arranged adjacent to the connection openings 9, 10 serve for fastening the abovementioned counter flange, which is not shown, which is generally a standard part.
  • the connecting flange 5 also has two retaining lugs 13, 14 with guide and retaining grooves 13a, 14a. At the collecting tube 3 are two transversely to the longitudinal direction of the manifold 3 horrrekkende holder 15, 16 attached, which are received by the grooves 13 a, 14 a of the attachment lugs 13, 14. About the holder 15, 16 of the connecting flange 5 is substantially fixed relative to the manifold 3 and - after soldering - fixed, with an additional fixation and attachment is also on the two connecting pipes 6, 7 given.
  • Fig. 3 shows an exploded view of the parts to be joined before soldering, namely the manifold 3, the two holders 15, 16, the two connecting pipes 6, 7 and the connecting flange 5 with the attachment lugs 13, 14.
  • the same reference numerals as in FIGS. 1 and 2 used.
  • the connection flange 5 can initially be produced, ie as a blank by extrusion.
  • the two retaining lugs 13, 14 with their guide and retaining grooves 13a, 14a typical extrusion profiles, which do not extend over the entire depth of the connecting flange 5, however.
  • the extruded blank of the connecting flange 5 is therefore - to the Fig. 3 apparent form to receive - additionally subjected to a cutting machining such as drilling and milling.
  • the two holders 15, 16 are of identical design and have at their end facing the manifold 3 a downwardly directed approach, a so-called flag 15b, 16b and at its opposite end in each case a holding arm 15a, 16a.
  • two slots 16, 17 are arranged at the top, in which the flags 15a, 16a of the holder 15, 16 are inserted and caulked from the inside.
  • a fixation of the two holders 15,16 is achieved with respect to the manifold 3.
  • connection flange 5 On the thus fixed holder 15, 16 of the connecting flange 5 is inserted by the holding arms 15 a, 16 a are inserted into the guide and retaining grooves 13 a, 14 a, up to a stop on the holder.
  • the connecting pipes 6, 7 are inserted into corresponding unspecified openings of the collecting pipe 3 and at the same time into the connecting openings 11, 12.
  • solder rings 19, 20 are provided, while the holders 15, 16 are soldered on both sides to solder on the one hand to the manifold 3 and on the other hand to the connection flange 5.
  • connection flange 5 is fixed to the manifold 3, that is, the capacitor 1 connected.
  • the connecting tubes 6, 7 are soldered tight in both the manifold 3 and in the connection flange 5 and the slots 17, 18 are sealed by soldering the holder 15, 16.
  • the connecting flange 5 has a front planar connecting surface 21, which approximately parallel to the end face 2a (see. Fig. 1 ) is aligned and connected to a counter flange, not shown, for connection to a refrigerant inlet and - outlet line.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)

Description

Die Erfindung betrifft einen gelöteten Wärmeübertrager, insbesondere einen Kondensator für Kraftfahrzeuge mit mindestens einem Sammelrohr und einem am Sammelrohr befestigten Flansch zur Aufnahme von Verbindungsrohren nach dem Oberbegriff des Anspruchs 1. US 2003/6173069 A1 offenbart einen solchen Wärmeübertrager.The invention relates to a brazed heat exchanger, in particular a condenser for motor vehicles with at least one collecting tube and a flange attached to the manifold for receiving connecting pipes according to the preamble of claim 1. US 2003/6173069 A1 discloses such a heat exchanger.

Durch die DE-A 196 45 502 wurde ein Kältemittel-Kondensator einer Klimaanlage für Kraftfahrzeuge bekannt, wobei der Kondensator aus einem Rohr/Rippen-Block und seitlich angeordneten Sammelrohren besteht. Der bekannte Kondensator weist ferner einen Anschlussflansch zum Anschluss von Kältemittelleitungen eines Kältemittelkreislaufes auf. Der Anschlussflansch ist mittels eines Haltebleches über Nieten oder Schrauben mit dem Rohr/Rippen-Block des Kondensators verbunden. Zwischen dem Anschlussflansch und einem Sammelrohr ist ein Verbindungsrohr für den Kältemitteleintritt angeordnet. Andererseits ist der Anschlussflansch mit einem Kältemittelaustrittsrohr des Kondensators verbunden. Der am Kondensator befestigte Anschlussflansch stellt somit die Schnittstelle zum Kältemittelkreislauf des Kraftfahrzeuges dar. Nachteilig ist die Befestigung durch Nieten oder Schrauben im Rohr/Rippen-Block, welche zu Beschädigungen oder Undichtigkeiten führen können. Darüber hinaus sind zusätzliche Montageschritte für die Befestigung des Haltebleches am Rohr/Rippen-Block und des Anschlussflansches am Halteblech erforderlich.By the DE-A 196 45 502 has been known a refrigerant condenser of an air conditioning system for motor vehicles, wherein the condenser consists of a tube / fin block and laterally arranged collecting pipes. The known capacitor also has a connection flange for connection of refrigerant lines of a refrigerant circuit. The connecting flange is connected by means of a holding plate via rivets or screws with the tube / fin block of the capacitor. Between the connection flange and a manifold, a connecting pipe for the refrigerant inlet is arranged. On the other hand, the connection flange is connected to a refrigerant outlet pipe of the condenser. The attached to the condenser flange thus represents the interface to the refrigerant circuit of the motor vehicle. The disadvantage is the attachment by rivets or screws in the tube / rib block, which can lead to damage or leaks. In addition, additional assembly steps for the attachment of the retaining plate on the tube / rib block and the connecting flange on the holding plate required.

Durch die EP-A 0 915 308 wurde ein Kondensator für eine Kraftfahrzeugklimaanlage mit zwei separaten Anschlussflanschen bekannt, die an einem Sammelrohr befestigt sind. Nachteilig bei dieser getrennten Anordnung ist, dass jeder Flansch einzeln an die Kältemitteleintrittsleitung und die Kältemittelaustrittsleitung des Kältemittelkreislaufes angeschlossen werden muss.By the EP-A 0 915 308 a condenser for an automotive air conditioning system with two separate connection flanges was known, which are attached to a manifold. A disadvantage of this separate arrangement is that each flange must be connected individually to the refrigerant inlet line and the refrigerant outlet line of the refrigerant circuit.

Derartige Kältemittel-Kondensatoren bestehen im Wesentlichen aus Aluminiumteilen, die miteinander zu einem fertigen Wärmeübertrager verlötet werden. Ziel und gleichzeitig Problem bei der Verlötung ist, alle Teile so zueinander zu positionieren und zu fixieren, dass sie ohne zusätzliche Löthilfen oder Lötvorrichtungen bzw. möglichst wenige derartiger Vorrichtungen im Lötofen verlötbar sind.Such refrigerant condensers consist essentially of aluminum parts, which are soldered together to form a finished heat exchanger. The goal and at the same time problem in the soldering is to position and fix all parts to each other so that they can be soldered in the brazing furnace without additional Löthilfe or soldering or as few such devices.

In der älteren europäischen Patentanmeldung mit der Anmeldenummer EP 03 290 190.2 ist ein Wärmeübertrager, insbesondere ein gelöteter Kältemittel-Kondensator mit mindestens einem Sammelrohr beschrieben, an welchem ein Anschlussflansch fixierbar und verlötbar ist. Der Anschlussflansch ist vorzugsweise durch Extrusion hergestellt und weist einen einstükkigen Halter auf, welcher das Sammelrohr klemmend umgreift und mit diesem eine Lötfläche bildet. Gleichzeitig ist der Anschlussflansch über zwei Verbindungsrohre für den Kältemitteleintritt und den Kältemittelaustritt mit dem Sammelrohr verbunden. In dieser Position wird der Kondensator zusammen mit Verbindungsrohren und Flansch gelötet. Er weist somit einen gemeinsamen Flansch zum Anschluss an eine Kältemitteleintritts- und austrittsleitung eines Kältemittelkreislaufes auf. Durch die einstückige Ausbildung von Halter und Flansch als Extrusionsteil sind die Anschlusspositionen beschränkt.In the earlier European patent application with the application number EP 03 290 190.2 is a heat exchanger, in particular a soldered refrigerant condenser described with at least one collecting tube to which a connecting flange can be fixed and soldered. The connecting flange is preferably produced by extrusion and has a one-piece holder which clampingly surrounds the collecting tube and forms a soldering surface with the latter. At the same time, the connection flange is connected to the manifold via two connecting pipes for the refrigerant inlet and the refrigerant outlet. In this position, the capacitor is soldered together with connecting tubes and flange. It thus has a common flange for connection to a refrigerant inlet and outlet line of a refrigerant circuit. Due to the integral formation of holder and flange as an extrusion part, the connection positions are limited.

Ausgehend von dieser älteren europäischen Patentanmeldung, ist es Aufgabe der vorliegenden Erfindung, einen derartigen Wärmeübertrager hinsichtlich der Flanschanordnung flexibler zu gestalten, damit der Wärmeübertrager auch bei unterschiedlichen Anschlusspositionen einfach und sicher anschließbar ist.Based on this earlier European patent application, it is an object of the present invention to make such a heat exchanger with respect to the flange more flexible, so that the heat exchanger is easy and safe to connect even with different connection positions.

Diese Aufgabe wird durch die Merkmale des Patentanspruches 1 gelöst.This object is solved by the features of claim 1.

In vorteilhafter Ausgestaltung der Erfindung ist der Flansch seitlich gegenüber dem Sammelrohr bzw. dem Block, bestehend aus Rohren und Rippen, versetzt angeordnet. Dadurch kann beim Einbau des Kondensators Einbauhöhe bzw. -breite gespart werden. Die seitliche Anordnung wird dadurch erreicht, dass die Halter quer zum Sammelrohr abragende Haltearme aufweisen, an welchen der Anschlussflansch gehalten ist.In an advantageous embodiment of the invention, the flange is laterally offset relative to the manifold or the block consisting of tubes and ribs. As a result, installation height or width can be saved when installing the capacitor. The lateral arrangement is achieved in that the holders have transversely to the collecting tube projecting retaining arms on which the connecting flange is held.

Nach Anspruch 1 weist der Anschlussflansch einen oder mehrere Halteansätze auf, die vorteilhafterweise Führungs- und Haltenuten aufweisen. Dadurch ist es möglich, den Anschlussflansch auf den oder die Halter bzw. Haltearme aufzustecken, zu positionieren und zu fixieren. Die Halter selbst werden in entsprechende Schlitze im Sammelrohr gesteckt und dort mittels Fahnen (Ansätze an den Haltern) verstemmt. Somit sind auch die Halter gegenüber den Sammelrohren fixiert. Eine weitere Fixierung des Anschlussflansches erfolgt durch die Verbindungsrohre, die einerseits in entsprechenden Öffnungen in dem Sammelrohr stecken und andererseits in Verbindungsöffnungen im Flansch eingesetzt sind.According to claim 1, the connecting flange on one or more holding lugs, which advantageously have guide and retaining grooves. This makes it possible aufzustecken the connection flange on the or the holder or holding arms, to position and fix. The holders themselves are inserted into corresponding slots in the manifold and caulked there by flags (approaches to the holders). Thus, the holders are fixed to the headers. A further fixation of the connection flange takes place through the connecting pipes, which are inserted on the one hand into corresponding openings in the collecting pipe and on the other hand are inserted into connecting openings in the flange.

In vorteilhafter Ausgestaltung der Erfindung ist der Anschlussflansch durch Extrusion bzw. Strangpressen herstellbar - damit können die Herstellkosten gesenkt werden; das Rohteil wird jedoch anschließend bearbeitet, d. h. gefräst und gebohrt. Es ist somit auch möglich, Umlenkungen des Kältemittels innerhalb des Flansches um 90 Grad zu realisieren. Der Flansch in seiner Rohform kann jedoch auch durch Schmieden oder Gießen hergestellt werden.In an advantageous embodiment of the invention, the connection flange can be produced by extrusion or extrusion - so that the manufacturing costs be lowered; however, the blank is subsequently machined, ie milled and drilled. It is thus also possible to realize deflections of the refrigerant within the flange by 90 degrees. However, the flange in its raw form can also be made by forging or casting.

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

Fig. 1
einen Kondensator für eine Klimaanlage eines Kraftfahrzeuges mit Anschlussflansch,
Fig. 2
den Anschlussflansch montiert in vergrößerter Darstellung und
Fig. 3
den Anschlussflansch mit Haltern und Sammelrohr in Explosiv-Darstellung.
An embodiment of the invention is illustrated in the drawing and will be described in more detail below. Show it
Fig. 1
a condenser for an air conditioning system of a motor vehicle with connection flange,
Fig. 2
the connection flange mounted in an enlarged view and
Fig. 3
the connecting flange with holders and manifold in explosive representation.

Fig. 1 zeigt einen Kondensator 1 einer nicht dargestellten Klimaanlage für ein Kraftfahrzeug. Der Kondensator weist einen Block 2, bestehend aus nicht näher bezeichneten Flachrohren und Wellrippen, mit einer Stirnfläche 2a auf, wobei die Flachrohre mit ihren Enden in seitlich angeordnete Sammelrohre 3, 4 münden. Der Kondensator 1 wird primärseitig von Kältemittel eines nicht dargestellten Kältemittelkreislaufes durchströmt und über einen Anschlussflansch 5 an den Kältemittelkreislauf angeschlossen. Der Anschlussflansch 5 ist über ein erstes Verbindungsrohr 6 für den Eintritt des Kältemittels mit dem oberen Teil des Sammelkastens 3 verbunden und über ein zweites Verbindungsrohr 7 für den Austritt des Kältemittels aus dem Kondensator 1 mit dem unteren Teil des Sammelrohres 3. Der Kondensator 1 ist in der dargestellten Lage, d. h. mit etwa horizontal angeordneten Rohren bzw. senkrecht angeordneten Sammelrohren 3, 4 im Fahrzeug eingebaut und dort über Laschen 8 befestigt. Fig. 1 shows a condenser 1 of an air conditioner, not shown, for a motor vehicle. The condenser has a block 2, consisting of unspecified flat tubes and corrugated fins, with an end face 2a, wherein the flat tubes open with their ends in laterally arranged manifolds 3, 4. The condenser 1 flows through the primary side of refrigerant of a refrigerant circuit, not shown, and connected via a connection flange 5 to the refrigerant circuit. The connecting flange 5 is connected via a first connecting pipe 6 for the entry of the refrigerant to the upper part of the collecting tank 3 and via a second connecting pipe 7 for the exit of the refrigerant from the condenser 1 to the lower part of the collecting pipe 3. The condenser 1 is in the position shown, ie installed with approximately horizontally arranged tubes or vertically arranged manifolds 3, 4 in the vehicle and fastened there via tabs 8.

Fig. 2 zeigt einen vergrößerten Ausschnitt aus Fig. 1 mit dem Anschlussflansch 5, welcher am Sammelrohr 3 befestigt ist. Der Anschlussflansch 5 dient der kältemittelseitigen Verbindung des Kondensators 1 mit dem nicht dargestellten Kältemittelkreislauf der Kraftfahrzeugklimaanlage und stellt somit eine Schnittstelle dar. Der Flansch 5 weist daher vier Öffnungen für den Durchtritt des Kältemittels auf, nämlich eine erste Anschlussöffnung 9 für den Eintritt des Kältemittels (aus dem Kältemittelkreislauf) und eine zweite Anschlussöffnung 10 für den Austritt des Kältemittels (in den Kältemittelkreislauf), ferner eine Verbindungsöffnung 11 zur Aufnahme des Verbindungsrohres 6 und eine Verbindungsöffnung 12 zur Aufnahme des Verbindungsrohres 7. Das Verbindungsrohr 6 mündet in eine nicht näher dargestellte Eintrittskammer des Sammelrohres 3 und das Verbindungsrohr 7 in eine ebenfalls nicht näher bezeichnete Austrittskammer des Sammelrohres 3; die Unterteilung der Sammelrohre in Kammern durch Trennwände ist aus dem Stand der Technik bekannt. Die Anschlussöffnungen 9, 10 sind durch Stopfen 9a, 10a für den Transport des Kondensators 1 verschlossen - sie werden beim Anschluss des Kondensators an einen nicht dargestellten Gegenflansch des Kältemittelkreislaufes entfernt. Die benachbart zu den Anschlussöffnungen 9, 10 angeordneten Befestigungsaugen 9b, 10b dienen der Befestigung des erwähnten nicht dargestellten Gegenflansches, welcher in der Regel ein Normteil ist. Der Anschlussflansch 5 weist ferner zwei Halteansätze 13, 14 mit Führungs- und Haltenuten 13a, 14a auf. Am Sammelrohr 3 sind zwei sich quer zur Längsrichtung des Sammelrohres 3 erstrekkende Halter 15, 16 befestigt, welche von den Nuten 13a, 14a der Befestigungsansätze 13, 14 aufgenommen werden. Über die Halter 15, 16 ist der Anschlussflansch 5 im Wesentlichen gegenüber dem Sammelrohr 3 fixiert und - nach dem Löten - befestigt, wobei eine zusätzliche Fixierung und Befestigung auch über die beiden Verbindungsrohre 6, 7 gegeben ist. Fig. 2 shows an enlarged section Fig. 1 with the connection flange 5, which is attached to the manifold 3. The connecting flange 5 serves for the refrigerant side connection of the condenser 1 to the refrigerant circuit, not shown, of the motor vehicle air conditioning system and thus constitutes an interface. The flange 5 therefore has four openings for the passage of the refrigerant, namely a first connection opening 9 for the entry of the refrigerant (from the refrigerant circuit) and a second connection opening 10 for the exit of the refrigerant (in the refrigerant circuit), further comprises a connection opening 11 for receiving the connecting pipe 6 and a connection opening 12th for receiving the connecting pipe 7. The connecting pipe 6 opens into a non-illustrated inlet chamber of the manifold 3 and the connecting pipe 7 in a likewise unspecified outlet chamber of the manifold 3; the subdivision of the headers in chambers by partitions is known from the prior art. The connection openings 9, 10 are closed by plugs 9a, 10a for the transport of the condenser 1 - they are removed when connecting the condenser to a counter flange, not shown, of the refrigerant circuit. The fastening eyes 9b, 10b arranged adjacent to the connection openings 9, 10 serve for fastening the abovementioned counter flange, which is not shown, which is generally a standard part. The connecting flange 5 also has two retaining lugs 13, 14 with guide and retaining grooves 13a, 14a. At the collecting tube 3 are two transversely to the longitudinal direction of the manifold 3 erstrekkende holder 15, 16 attached, which are received by the grooves 13 a, 14 a of the attachment lugs 13, 14. About the holder 15, 16 of the connecting flange 5 is substantially fixed relative to the manifold 3 and - after soldering - fixed, with an additional fixation and attachment is also on the two connecting pipes 6, 7 given.

Fig. 3 zeigt eine Explosivdarstellung der vor dem Löten miteinander zu verbindenden Teile, nämlich das Sammelrohr 3, die beiden Halter 15, 16, die beiden Verbindungsrohre 6, 7 und den Anschlussflansch 5 mit den Befestigungsansätzen 13, 14. Im Übrigen sind dieselben Bezugsziffern wie in den Figuren 1 und 2 verwendet. Aus der Darstellung in Fig. 3 (in Verbindung mit der Darstellung in Fig. 2) ist erkennbar, dass der Anschlussflansch 5 zunächst, d. h. als Rohteil durch Extrusion herstellbar ist. So bilden beispielsweise die beiden Halteansätze 13, 14 mit ihren Führungs- und Haltenuten 13a, 14a typische Extrusionsprofile, die sich allerdings nicht über die gesamte Tiefe des Anschlussflansches 5 erstrecken. Das extrudierte Rohteil des Anschlussflansches 5 wird daher - um die aus Fig. 3 ersichtliche Form zu erhalten - zusätzlich einer spangebenden Bearbeitung wie Bohren und Fräsen unterzogen. Die beiden Halter 15, 16 sind identisch ausgebildet und weisen an ihrem dem Sammelrohr 3 zugewandten Ende einen nach unten gerichteten Ansatz, eine so genannte Fahne 15b, 16b und an ihrem entgegengesetzten Ende jeweils einen Haltearm 15a, 16a auf. Im Sammelrohr 3 sind an deren Oberseite zwei Schlitze 16, 17 angeordnet, in welche die Fahnen 15a, 16a der Halter 15, 16 gesteckt und von innen verstemmt werden. Damit wird eine Fixierung der beiden Halter 15,16 gegenüber dem Sammelrohr 3 erreicht. Auf die so fixierten Halter 15, 16 wird der Anschlussflansch 5 gesteckt, indem die Haltearme 15a, 16a in die Führungs- und Haltenuten 13a, 14a eingeführt werden, und zwar bis zu einem Anschlag am Halter. Nach diesem Schritt werden die Verbindungsrohre 6, 7 in entsprechende nicht näher bezeichnete Öffnungen des Sammelrohres 3 und gleichzeitig in die Verbindungsöffnungen 11, 12 eingesetzt. Für die Verlötung der Verbindungsrohre 6, 7 in den Öffnungen 11, 12 sind Lotringe 19, 20 vorgesehen, während die Halter 15, 16 beidseitig lotplattiert sind, um einerseits mit dem Sammelrohr 3 und andererseits mit dem Anschlussflansch 5 zu verlöten. Nachdem alle Teile in der zuvor beschriebenen Weise gefügt, positioniert und fixiert worden sind, wird der gesamte Kondensator in einen nicht dargestellten Lötofen verbracht und dort in einem Arbeitsgang gelötet. Danach ist der Anschlussflansch 5 fest mit dem Sammelrohr 3, d. h. dem Kondensator 1 verbunden. Die Verbindungsrohre 6, 7 sind sowohl in das Sammelrohr 3 als auch in den Anschlussflansch 5 dicht eingelötet und die Schlitze 17, 18 sind durch Einlöten der Halter 15, 16 dicht verschlossen. Der Anschlussflansch 5 weist eine vordere ebene Anschlussfläche 21 auf, welche etwa parallel zur Stirnfläche 2a (vgl. Fig. 1) ausgerichtet ist und mit einem nicht dargestellten Gegenflansch zum Anschluss an eine Kältemitteleintritts- und - austrittsleitung verbunden wird. Fig. 3 shows an exploded view of the parts to be joined before soldering, namely the manifold 3, the two holders 15, 16, the two connecting pipes 6, 7 and the connecting flange 5 with the attachment lugs 13, 14. Incidentally, the same reference numerals as in FIGS. 1 and 2 used. From the illustration in Fig. 3 (in conjunction with the illustration in Fig. 2 ) it can be seen that the connection flange 5 can initially be produced, ie as a blank by extrusion. Thus, for example, the two retaining lugs 13, 14 with their guide and retaining grooves 13a, 14a typical extrusion profiles, which do not extend over the entire depth of the connecting flange 5, however. The extruded blank of the connecting flange 5 is therefore - to the Fig. 3 apparent form to receive - additionally subjected to a cutting machining such as drilling and milling. The two holders 15, 16 are of identical design and have at their end facing the manifold 3 a downwardly directed approach, a so-called flag 15b, 16b and at its opposite end in each case a holding arm 15a, 16a. In the manifold 3, two slots 16, 17 are arranged at the top, in which the flags 15a, 16a of the holder 15, 16 are inserted and caulked from the inside. Thus, a fixation of the two holders 15,16 is achieved with respect to the manifold 3. On the thus fixed holder 15, 16 of the connecting flange 5 is inserted by the holding arms 15 a, 16 a are inserted into the guide and retaining grooves 13 a, 14 a, up to a stop on the holder. After this step, the connecting pipes 6, 7 are inserted into corresponding unspecified openings of the collecting pipe 3 and at the same time into the connecting openings 11, 12. For the soldering of the connecting pipes 6, 7 in the openings 11, 12 solder rings 19, 20 are provided, while the holders 15, 16 are soldered on both sides to solder on the one hand to the manifold 3 and on the other hand to the connection flange 5. After all parts have been joined, positioned and fixed in the manner described above, the entire capacitor is placed in a soldering oven, not shown, and soldered there in one operation. Thereafter, the connection flange 5 is fixed to the manifold 3, that is, the capacitor 1 connected. The connecting tubes 6, 7 are soldered tight in both the manifold 3 and in the connection flange 5 and the slots 17, 18 are sealed by soldering the holder 15, 16. The connecting flange 5 has a front planar connecting surface 21, which approximately parallel to the end face 2a (see. Fig. 1 ) is aligned and connected to a counter flange, not shown, for connection to a refrigerant inlet and - outlet line.

Claims (8)

  1. A soldered heat exchanger, in particular a condenser for motor vehicles, with at least one manifold (3) and a flange (5) which is secured to the manifold (3) and is intended for receiving connecting tubes (6, 7), it being possible for the flange (5) to be fixed and soldered on the manifold (3) by at least one holder (15, 16), wherein the at least one holder (15, 16) is secured to the manifold (3), in particular caulked, and has a laterally protruding holding arm (15a, 16a), characterised in that the flange (5) has at least one holding attachment (13, 14) with a holding and guiding groove (13a, 14a), which receives the holding arm (15, 16) and the flange (5) has two holding attachments (13, 14) and is connected to the manifold (3) by means of two holders (15, 16) arranged parallel to one another.
  2. The heat exchanger as claimed in claim 1, characterised in that the flange (5) is arranged laterally offset with respect to the manifold (3).
  3. The heat exchanger as claimed in one of claims 1 to 2, characterised in that the connecting tubes (6, 7) can be inserted on the one hand into the manifold (3) and on the other hand into the flange (5) and can be soldered.
  4. The heat exchanger as claimed in one of claims 1 to 3, characterised in that the flange (5) has a connection face (21) and the heat exchanger has an end face (2a) and in that the connection face (21) and the end face (2a) are arranged approximately parallel to one another.
  5. The heat exchanger as claimed in claim 4, characterised in that the flange (5) has two connection openings (9, 10), which are arranged next to one another in the connection face (21).
  6. The heat exchanger as claimed in one of claims 1 to 5, characterised in that the flange (5) can be produced as a blank by extrusion or extrusion moulding.
  7. The heat exchanger as claimed in one of claims 1 to 5, characterised in that the flange (5) can be produced as a blank by casting or drop-forging (pressing).
  8. The heat exchanger as claimed in one of claims 1 to 7, characterised in that the heat exchanger, in particular condenser (1), has a block (2) comprising tubes and fins and in that the heat exchanger (1) can be soldered in its complete form with manifolds (3, 4), connecting tubes (6, 7), holders (15, 16) and flange (5).
EP04004129.5A 2004-02-24 2004-02-24 Brazed heat exchanger, especially condenser for automobiles Expired - Lifetime EP1568959B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP04004129.5A EP1568959B1 (en) 2004-02-24 2004-02-24 Brazed heat exchanger, especially condenser for automobiles
PCT/EP2005/001955 WO2005080903A1 (en) 2004-02-24 2005-02-24 Soldered heat exchanger, in particular capacitor for motor vehicles
US10/590,487 US7900693B2 (en) 2004-02-24 2005-02-24 Soldered heat exchanger, in particular a condenser for motor vehicles
CN2005800126719A CN1950662B (en) 2004-02-24 2005-02-24 Brazed heat exchanger, especially condenser for automobiles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04004129.5A EP1568959B1 (en) 2004-02-24 2004-02-24 Brazed heat exchanger, especially condenser for automobiles

Publications (2)

Publication Number Publication Date
EP1568959A1 EP1568959A1 (en) 2005-08-31
EP1568959B1 true EP1568959B1 (en) 2015-10-21

Family

ID=34745865

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04004129.5A Expired - Lifetime EP1568959B1 (en) 2004-02-24 2004-02-24 Brazed heat exchanger, especially condenser for automobiles

Country Status (4)

Country Link
US (1) US7900693B2 (en)
EP (1) EP1568959B1 (en)
CN (1) CN1950662B (en)
WO (1) WO2005080903A1 (en)

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Publication number Priority date Publication date Assignee Title
DE102022206675A1 (en) 2022-06-30 2024-01-04 Mahle International Gmbh Heat exchanger and motor vehicle

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JP4797998B2 (en) * 2006-02-17 2011-10-19 株式会社デンソー Heat exchanger piping joint structure and heat exchanger piping assembly method
DE102006051864B4 (en) 2006-10-31 2024-03-14 Mahle International Gmbh Heat exchanger, especially for a motor vehicle
FR2978237B1 (en) * 2011-07-21 2013-12-20 Valeo Systemes Thermiques CONNECTING FLANGE, COLLECTOR BOX AND THERMAL EXCHANGER
EP3250037A4 (en) * 2015-01-16 2018-06-20 The Board of Regents of The University of Texas System Compositions and methods for creating pancreatic cancer animal model
CN110195944A (en) * 2019-05-27 2019-09-03 合肥铭尊精密科技有限公司 A kind of automotive air-conditioning condenser collector tube and bracket, pressing plate buckle connecting structure
CN110195946A (en) * 2019-05-27 2019-09-03 合肥铭尊精密科技有限公司 A kind of connection type of automotive air-conditioning condenser collector tube, pressing plate and pipeline

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KR950009505B1 (en) * 1993-03-05 1995-08-23 주식회사두원공조 Method manufacturing heat-exchanger used in motors
US5429182A (en) * 1993-09-08 1995-07-04 Showa Aluminum Corporation Heat exchanger having inlet and outlet pipes for a heat exchanging medium and a method of making same
DE19645502C2 (en) 1995-11-22 2003-12-04 Volkswagen Ag Dryer arrangement on the refrigerant condenser of a vehicle air conditioning system
FR2746892B1 (en) * 1996-03-28 1998-05-22 Valeo Climatisation CONNECTING DEVICE FOR A PLATE HEAT EXCHANGER, PARTICULARLY FOR A MOTOR VEHICLE
DE59812657D1 (en) 1997-11-06 2005-04-21 Viessmann Werke Kg Dreizugheizkessel
JP4338877B2 (en) * 2000-05-22 2009-10-07 昭和電工株式会社 Piping structure of heat exchanger
US6793121B2 (en) * 2002-03-12 2004-09-21 Newfield Technology Corporation Clasp having a flange to couple a heat exchanger to a device in a cooling system
US6557373B1 (en) * 2002-03-12 2003-05-06 Newfield Technology Corporation Apparatus for coupling a manifold block to a condenser manifold
EP1443294A1 (en) 2003-01-23 2004-08-04 BEHR Lorraine S.A.R.L. Heat exchanger

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022206675A1 (en) 2022-06-30 2024-01-04 Mahle International Gmbh Heat exchanger and motor vehicle

Also Published As

Publication number Publication date
EP1568959A1 (en) 2005-08-31
CN1950662A (en) 2007-04-18
US20080029259A1 (en) 2008-02-07
CN1950662B (en) 2010-09-29
WO2005080903A1 (en) 2005-09-01
US7900693B2 (en) 2011-03-08

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