EP0689022B1 - Heat exchanger, especially radiator for combustion engines of commercial vehicles - Google Patents

Heat exchanger, especially radiator for combustion engines of commercial vehicles Download PDF

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Publication number
EP0689022B1
EP0689022B1 EP95108894A EP95108894A EP0689022B1 EP 0689022 B1 EP0689022 B1 EP 0689022B1 EP 95108894 A EP95108894 A EP 95108894A EP 95108894 A EP95108894 A EP 95108894A EP 0689022 B1 EP0689022 B1 EP 0689022B1
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EP
European Patent Office
Prior art keywords
heat exchanger
clip
collector box
accordance
fan hood
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
EP95108894A
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German (de)
French (fr)
Other versions
EP0689022A1 (en
Inventor
Werner Lenz
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
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Behr GmbH and Co KG
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Application filed by Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Publication of EP0689022A1 publication Critical patent/EP0689022A1/en
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Classifications

    • 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
    • F28D1/0233—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 air flow channels
    • F28D1/024—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 air flow channels with an air driving element
    • 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
    • F28F2280/00—Mounting arrangements; Arrangements for facilitating assembling or disassembling of heat exchanger parts
    • F28F2280/10—Movable elements, e.g. being pivotable
    • F28F2280/105—Movable elements, e.g. being pivotable with hinged connections

Definitions

  • the invention relates to a heat exchanger, in particular a cooler for internal combustion engines of commercial vehicles, with a fan hood arranged in front of the finned tube block, which is applied to the header boxes of the finned tube block by being applied perpendicular to the front side and then by means of a relative movement parallel to the front side with the aid of a positive engagement of interlocking ones Plug-in tabs are held with locking devices.
  • a heat exchanger of this type in which the system between the fan cover and the collecting boxes designed there as water boxes is brought about by sliding tabs which engage in one another when the fan cover is initially aligned in height with corresponding stop guides on the water boxes applied and then laterally shifted to a certain extent until the sliding tabs snap into their guides.
  • Heat exchangers of this type only require a parallel displacement to the front to mount the fan cover on the radiator, but no other fastening means. Nevertheless, the assembly process is not always easy due to the necessary alignment in height, especially when assembling or later disassembling the vehicle should be made and the spatial conditions in the engine compartment are cramped.
  • the invention has for its object to develop a heat exchanger of the type mentioned so that an even easier assembly between the fan cover and heat exchanger unit is possible.
  • at least one pivot pin / hinge connection between the fan cover and header boxes is provided and the plug-in tabs and locking devices are arranged so that the positive locking can be done by pivoting the fan cover around the pivot pin.
  • This configuration has the great advantage that only the pivot pin / hinge connection between the fan cover and header boxes needs to be made, which, however, since only one pin is to be inserted into a corresponding opening, does not require any difficult alignment processes. Subsequently, the fan cover can be pivoted around the pivot pin in a simple manner, during which the installation process no longer requires any significant attention. After the swiveling process, the fan cover snaps into the collecting boxes with a positive fit.
  • the pivot pin can be provided on the lower collecting box and at least one plug-in tab on the upper collecting box, so that good fastening can already be achieved.
  • the plug pin is arranged in the region of a side part on the lower collecting box, a plug tab is assigned approximately to the middle of the upper collecting box and another plug tab is arranged on the side of the lower collecting box facing away from the pivot pin.
  • the plug-in tab on the upper collecting box can be designed as a U-shaped receiving pocket into which a tab connected to the fan cover engages. A resilient locking hook can secure this tab in the end position, which is attached to the collecting box.
  • the lower plug-in tab, which is arranged on the lower collecting box can be designed as a plug-in slot into which a tab protruding from the fan cover can be inserted in a suitable manner.
  • This tab can be arranged on the fan cover so that its longitudinal axis is approximately tangential to an arc, the center of which is the pivot pin. In this way, the tab can be inserted in a particularly simple manner into the slots assigned to it with the pivoting movement.
  • the tab arranged on the fan hood and engaging in the upper header box is assigned a contact web which is pressed against a contact surface of the header box in the end position of the fan hood.
  • FIG. 1 shows a heat exchanger designated overall by (1), which in a known manner consists of a finned tube block (2) with an upper header tank (3) designed as a water tank and a lower header tank (4) also designed as a water tank exists, which are each provided with inflow and outflow connections (5) for the heat exchange medium.
  • the finned tube block (2) is bordered by side parts (6) which are connected to the upper and lower header boxes (3 and 4).
  • a fan hood (7) On the front of the heat exchanger facing the viewer, a fan hood (7) is placed, which serves to hold a blower (8), the blades (9) of which are attached in a known manner to a hub (10) provided with an electric motor, which in turn in A mounting ring (11) of the fan cover (7) is mounted, which in turn is connected to a mounting ring (13) of the fan cover (7) via radially extending mounting webs (12).
  • the entire fan hood (7) is held with its fastening ring on the front of the heat exchanger (1) in that a sleeve (14) acting as a hinge is attached to a web (15) which projects obliquely downwards from the fastening ring (13).
  • the upper tab (19) is assigned a stop bar (23) which, in the assembly position shown, presses firmly against a corresponding stop edge (24) of the upper collecting tank (3).
  • the fastening ring (13) is also also provided with a stop piece (25) with which it rests against a side part (6) from the outside.
  • the receiving part assigned to the upper tab (19) is designed as a U-shaped receiving pocket (21) which is designed in such a way that the tab (19) lies firmly against the inside of the outer bracket part and thus a pressing of the fastening ring (13) and the contact web (23) on the associated header box or on the front side, which in the exemplary embodiment is provided in the area between header boxes and side parts on the one hand and the fastening ring (13) on the other hand with corresponding corner cladding, so that the air conveyed by the blower (8) intensifies the finned tube block can flow through.
  • the receiving pocket (21) is preceded by a resilient latching hook (27) which, as will be explained later, is pushed to the side by the tab (19) during the assembly process, but which is then when the tab (19) has reached its end position , abuts the tab (19) with its front end (27a) and prevents the tab from unintentionally detaching from the receiving pocket (21).
  • the receptacle (22) associated with the lower tab (20) is a bracket projecting from the front of the lower collecting box (4), which has a slot (28) for inserting the tab (20) forms.
  • the pivot pin (16) which is fastened to the lower collecting box (4) and also protrudes towards the front, has two diametrically opposite pins (29) at a certain distance from its base, the significance of which will be discussed in the description of the assembly process .
  • the sleeve (14) to be pushed onto the pivot pin (16) is finally provided with two slots, also starting from its inner diameter, which are also diametrically opposed and whose dimensions are matched to those of the pins (29), which, as will be explained, via the pins ( 29) can be pushed.
  • the assembly process is as follows:
  • the fan cover (7) is first pivoted in an angle ( ⁇ ) of approximately 45 ° in a clockwise direction relative to the position shown in FIGS. 1 and 2, plugged onto the pivot pin (16) of the lower header box (4), specifically until the mounting ring (13) and the landing stage (23) touch the front of the collection boxes (3 and 4). In this position, the slots (30) can therefore be pushed over the pins (29) of the pivot pin (16) so that these pins (29) lie in front of an edge (31) in the sleeve (14).
  • the fastening process can now be initiated by pivoting the fan cover (7) counterclockwise by the angle ( ⁇ ); on the one hand, the Pin (29) of the pivot pin (16) over the surface (31) in the hinge sleeve (14).
  • the tab (19) comes into the area of its U-shaped receiving pocket (21) and thereby presses the latching hook (27) lying in front of the open end of the receiving pocket (21) in a clockwise direction, where its end, for example, in a recess (32) can be included.
  • the tab (20) simultaneously reaches the area of the slot (28).
  • the plug-in tab (19) reaches the area within the U-shaped recess (33) and strikes there.
  • the end (27a) of the resilient locking hook (27) is free and lies against the outwardly facing surface of the tab (19), so that a backward movement is prevented.
  • the stop part (25) lies against the side part (6) and the tab (20) has reached its end position within the slot (28).
  • the fan cover (7) is positively mounted. It can be dismantled again when the locking hook (27) is pressed inwards.
  • the entire assembly and disassembly process can be carried out without the use of tools.
  • the pivoting process is extremely simple and there is no need for separate alignment of the top and bottom edges. Only the sleeve (14) must be guided over the pivot pin (16) in the appropriate position. Once this has been done, it is sufficient if the fan hood is pressed counterclockwise, which then pivots into its mounting position.
  • so-called water tanks are shown as collecting tanks because a liquid cooling medium flows through the finned tube block.
  • the header boxes (3, 4) shown in the exemplary embodiment for the operation of the heat exchanger as air / air coolers as air boxes so that e.g. a charge air cooler can be formed, which has the same structural features as the embodiment shown.

Description

Die Erfindung betrifft einen Wärmetauscher, insbesondere einen Kühler für Verbrennungskraftmaschinen von Nutzfahrzeugen, mit einer vor dem Rippenrohrblock angeordneten Lüfterhaube, die an den Sammelkästen des Rippenrohrblockes durch ein senkrecht zu der Frontseite erfolgendes Anlegen und dann durch Relativbewegung parallel zu der Frontseite mit Hilfe eines Formschlusses von ineinandergreifenden Stecklaschen mit Rasteinrichtungen gehalten ist.The invention relates to a heat exchanger, in particular a cooler for internal combustion engines of commercial vehicles, with a fan hood arranged in front of the finned tube block, which is applied to the header boxes of the finned tube block by being applied perpendicular to the front side and then by means of a relative movement parallel to the front side with the aid of a positive engagement of interlocking ones Plug-in tabs are held with locking devices.

Aus der DE 39 07 926 A1 ist ein Wärmetauscher dieser Art bekannt, bei dem die Anlage zwischen Lüfterhaube und den dort als Wasserkästen ausgebildeten Sammelkästen durch Schiebelaschen bewirkt wird, die einrastend ineinandergreifen, wenn die Lüfterhaube zunächst in der Höhe ausgerichtet mit entsprechenden Anschlagführungen an die Wasserkästen angelegt und dann seitlich um ein gewisses Maß verschoben wird, bis die Schiebelaschen in ihren Führungen einrasten. Wärmetauscher dieser Art benötigen zur Montage der Lüfterhaube am Kühler nur eine Parallelverschiebung zur Frontseite, aber keine sonstigen Befestigungsmittel. Dennoch ist der Montagevorgang wegen des erforderlichen Ausrichtens in der Höhe nicht immer einfach, insbesondere wenn der Zusammenbau oder eine spätere Demontage am Fahrzeug vorgenommen werden soll und die räumlichen Verhältnisse im Motorraum beengt sind.From DE 39 07 926 A1 a heat exchanger of this type is known, in which the system between the fan cover and the collecting boxes designed there as water boxes is brought about by sliding tabs which engage in one another when the fan cover is initially aligned in height with corresponding stop guides on the water boxes applied and then laterally shifted to a certain extent until the sliding tabs snap into their guides. Heat exchangers of this type only require a parallel displacement to the front to mount the fan cover on the radiator, but no other fastening means. Nevertheless, the assembly process is not always easy due to the necessary alignment in height, especially when assembling or later disassembling the vehicle should be made and the spatial conditions in the engine compartment are cramped.

Es ist auch bekannt (DE-OS 35 36 457), die Befestigung einer Lüfterhaube an Sammelkästen durch aus der Ebene des Randes der Lüfterhaube nach innen zum Rippenrohrblock ragende federnde Laschen mit Rasthaken vorzunehmen, die hinter entsprechende Kanten von Stegen am Sammelkasten greifen. Dabei sind den Federlaschen Anschlagflächen am Rand der Lüfterhaube zugeordnet, die zur Lagesicherung dienen. Diese Befestigungsart sichert zwar eine relativ einfache Montage zu. Da der Formschluß im wesentlichen aber nur durch Rasthaken erzielt wird, kann es bei solchen Bauarten beim Einsatz der Wärmetauscher im Nutzfahrzeugbereich wegen der dann auftretenden starken Belastungen zu einem Lösen des Formschlusses kommen.It is also known (DE-OS 35 36 457) to make the attachment of a fan hood to collecting tanks by resilient tabs projecting from the plane of the edge of the fan hood to the finned tube block with latching hooks which engage behind corresponding edges of webs on the collecting tank. The spring tabs are assigned stop surfaces on the edge of the fan cover, which serve to secure the position. This type of fastening ensures a relatively simple assembly. However, since the positive locking is essentially achieved only by latching hooks, the positive locking can be released when the heat exchangers are used in the commercial vehicle sector due to the heavy loads that then occur.

Der Erfindung liegt die Aufgabe zugrunde, einen Wärmetauscher der eingangs genannten Art so weiterzubilden, daß eine noch einfachere Montage zwischen Lüfterhaube und Wärmetauscheraggregat möglich wird. Zur Lösung dieser Aufgabe wird mindestens eine Schwenkzapfen/Scharnierverbindung zwischen Lüfterhaube und Sammelkästen vorgesehen und die Stecklaschen und Rasteinrichtungen werden so angeordnet, daß der Formschluß durch eine Schwenkung der Lüfterhaube um den Schwenkzapfen erfolgen kann.The invention has for its object to develop a heat exchanger of the type mentioned so that an even easier assembly between the fan cover and heat exchanger unit is possible. To solve this problem, at least one pivot pin / hinge connection between the fan cover and header boxes is provided and the plug-in tabs and locking devices are arranged so that the positive locking can be done by pivoting the fan cover around the pivot pin.

Diese Ausgestaltung weist den großen Vorteil auf, daß nur die Schwenkzapfen/Scharnierverbindung zwischen Lüfterhaube und Sammelkästen hergestellt zu werden braucht, was aber, da nur ein Zapfen in eine korrespondierende Öffnung einzuführen ist, keine schwierigen Ausrichtvorgänge erforderlich macht. Anschließend kann in einfacher Weise eine Verschwenkung der Lüfterhaube um den Schwenkzapfen herum erfolgen, während der dem Montagevorgang keine nennenswerte Aufmerksamkeit mehr gewidmet werden muß. Nach dem Schwenkvorgang verrastet die Lüfterhaube formschlüssig an den Sammelkästen.This configuration has the great advantage that only the pivot pin / hinge connection between the fan cover and header boxes needs to be made, which, however, since only one pin is to be inserted into a corresponding opening, does not require any difficult alignment processes. Subsequently, the fan cover can be pivoted around the pivot pin in a simple manner, during which the installation process no longer requires any significant attention. After the swiveling process, the fan cover snaps into the collecting boxes with a positive fit.

In Weiterbildung der Erfindung kann der Schwenkzapfen am unteren Sammelkasten und mindestens eine Stecklasche am oberen Sammelkasten vorgesehen sein, so daß sich schon eine gute Befestigung erreichen läßt. Vorteilhaft ist es allerdings, wenn der Steckzapfen im Bereich eines Seitenteiles am unteren Sammelkasten angeordnet, eine Stecklasche etwa der Mitte des oberen Sammelkastens zugeordnet und eine weitere Stecklasche an der vom Schwenkzapfen abgewandten Seite des unteren Sammelkastens angeordnet wird. Durch diese Maßnahmen ergibt sich eine Art Dreipunktbefestigung, die eine sichere Anlage gewährleistet.In a further development of the invention, the pivot pin can be provided on the lower collecting box and at least one plug-in tab on the upper collecting box, so that good fastening can already be achieved. However, it is advantageous if the plug pin is arranged in the region of a side part on the lower collecting box, a plug tab is assigned approximately to the middle of the upper collecting box and another plug tab is arranged on the side of the lower collecting box facing away from the pivot pin. These measures result in a kind of three-point fastening, which ensures a secure system.

In Weiterbildung der Erfindung kann die Stecklasche am oberen Sammelkasten als U-förmige Aufnahmetasche ausgebildet sein, in die passend eine mit der Lüfterhaube verbundene Lasche eingreift. Dabei kann ein federnder Rasthaken diese Lasche in der Endstellung sichern, der am Sammelkasten angebracht ist. Die untere Stecklasche, die am unteren Sammelkasten angeordnet ist, kann als ein Steckschlitz ausgebildet werden, in den eine von der Lüfterhaube abstehende Lasche passend einführbar ist. Dabei kann diese Lasche so an der Lüfterhaube angeordnet sein, daß ihre Längsachse in etwa tangential zu einem Kreisbogen verläuft, dessen Mittelpunkt der Schwenkzapfen ist. Die Lasche ist auf diese Weise mit der Schwenkbewegung in besonders einfacher Weise in den ihr zugeordneten Schlitzen einzuführen. Schließlich ist es vorteilhaft, wenn der an der Lüfterhaube angeordneten und in den oberen Sammelkasten eingreifenden Lasche ein Anlagesteg zugeordnet ist, der in der Endlage der Lüfterhaube an eine Anlagefläche des Sammelkastens angedrückt ist.In a further development of the invention, the plug-in tab on the upper collecting box can be designed as a U-shaped receiving pocket into which a tab connected to the fan cover engages. A resilient locking hook can secure this tab in the end position, which is attached to the collecting box. The lower plug-in tab, which is arranged on the lower collecting box, can be designed as a plug-in slot into which a tab protruding from the fan cover can be inserted in a suitable manner. This tab can be arranged on the fan cover so that its longitudinal axis is approximately tangential to an arc, the center of which is the pivot pin. In this way, the tab can be inserted in a particularly simple manner into the slots assigned to it with the pivoting movement. Finally, it is advantageous if the tab arranged on the fan hood and engaging in the upper header box is assigned a contact web which is pressed against a contact surface of the header box in the end position of the fan hood.

Die Erfindung ist in der Zeichnung anhand eines Ausführungsbeispieles dargestellt und wird im folgenden erläutert. Es zeigen:

Fig. 1
eine schematische perspektivische Darstellung eines erfindungsgemäßen Wärmetauschers mit einer an einem Rippenrohrblock befestigten Lüfterhaube,
Fig. 2
die schematische Darstellung einer Frontansicht auf den Wärmetauscher der Fig. 1 mit der Lüfterhaube in montiertem Zustand,
Fig. 3
die Seitenansicht des Wärmetauschers der Fig. 2 in Richtung des Pfeiles III gesehen und
Fig. 4
die Draufsicht auf den Wärmetauscher der Fig. 2 in Richtung des Pfeiles IV, jedoch ohne die montierte Lüfterhaube.
The invention is illustrated in the drawing using an exemplary embodiment and is explained in the following. Show it:
Fig. 1
1 shows a schematic perspective illustration of a heat exchanger according to the invention with a fan hood attached to a finned tube block,
Fig. 2
1 shows the schematic representation of a front view of the heat exchanger of FIG. 1 with the fan hood in the assembled state,
Fig. 3
the side view of the heat exchanger of FIG. 2 seen in the direction of arrow III and
Fig. 4
the top view of the heat exchanger of FIG. 2 in the direction of arrow IV, but without the fan cover installed.

In der Fig. 1 ist ein insgesamt mit (1) bezeichneter Wärmetauscher zu erkennen, der in bekannter Weise aus einem Rippenrohrblock (2) mit einem oberen, als Wasserkasten ausgebildeten Sammelkasten (3) und einem unteren, ebenfalls als Wasserkasten ausgebildeten Sammelkasten (4) besteht, die jeweils mit Zu- und Abströmstutzen (5) für das Wärmetauschmedium versehen sind. Der Rippenrohrblock (2) ist von Seitenteilen (6) eingefaßt, die mit dem oberen und unteren Sammelkasten (3 bzw. 4) verbunden sind.1 shows a heat exchanger designated overall by (1), which in a known manner consists of a finned tube block (2) with an upper header tank (3) designed as a water tank and a lower header tank (4) also designed as a water tank exists, which are each provided with inflow and outflow connections (5) for the heat exchange medium. The finned tube block (2) is bordered by side parts (6) which are connected to the upper and lower header boxes (3 and 4).

An der dem Betrachter zugewandten Frontseite des Wärmetauschers ist eine Lüfterhaube (7) aufgesetzt, die zur Halterung eines Gebläses (8) dient, dessen Schaufeln (9) in bekannter Weise an einer mit einem Elektromotor versehenen Nabe (10) angebracht sind, die ihrerseits in einem Befestigungsring (11) der Lüfterhaube (7) gelagert ist, welcher wiederum über radial verlaufende Befestigungsstege (12) mit einem Befestigungsring (13) der Lüfterhaube (7) verbunden sind. Die gesamte Lüfterhaube (7) ist mit ihrem Befestigungsring dadurch an der Frontseite des Wärmetauschers (1) gehalten, daß eine als Scharnier wirkende Hülse (14), die an einem vom Befestigungsring (13) schräg nach unten abragenden Steg (15) angebracht ist, über einen aus den Fig. 2 bis 4 erkennbaren Schwenkzapfen (16) in noch näher zu erläuternder Weise gegen die Frontseite gehalten wird und diese Befestigungslage durch zwei, ebenfalls über Stege (17 bzw. 18) vom Befestigungsring (13) abragende Laschen (19 bzw. 20) in der Montagelage gesichert ist, die in entsprechende Aufnahmen (21 bzw. 22) eingeführt sind, die vom oberen Sammelkasten (3) bzw. vom unteren Sammelkasten (4) über die Frontseite vorragen.On the front of the heat exchanger facing the viewer, a fan hood (7) is placed, which serves to hold a blower (8), the blades (9) of which are attached in a known manner to a hub (10) provided with an electric motor, which in turn in A mounting ring (11) of the fan cover (7) is mounted, which in turn is connected to a mounting ring (13) of the fan cover (7) via radially extending mounting webs (12). The entire fan hood (7) is held with its fastening ring on the front of the heat exchanger (1) in that a sleeve (14) acting as a hinge is attached to a web (15) which projects obliquely downwards from the fastening ring (13). Is held against the front side in a manner to be explained in more detail below by means of a pivot pin (16) which can be seen in FIGS. 2 to 4, and this fastening position is provided by two tabs (19 or . 20) in the Mounting position is secured, which are inserted into corresponding receptacles (21 and 22) which protrude from the upper collecting box (3) or from the lower collecting box (4) on the front.

Der oberen Lasche (19) ist dabei ein Anschlagsteg (23) zugeordnet, der sich in der gezeigten Montagelage fest an einen entsprechenden Anschlagrand (24) des oberen Sammelkastens (3) andrückt. Der Befestigungsring (13) ist außerdem auch noch mit einem Anschlagstück (25) versehen, mit dem er sich von außen an ein Seitenteil (6) anlegt.The upper tab (19) is assigned a stop bar (23) which, in the assembly position shown, presses firmly against a corresponding stop edge (24) of the upper collecting tank (3). The fastening ring (13) is also also provided with a stop piece (25) with which it rests against a side part (6) from the outside.

Der der oberen Lasche (19) zugeordnete Aufnahmeteil ist als eine U-förmige Aufnahmetasche (21) ausgebildet, die so ausgebildet ist, daß sich die Lasche (19) fest an die Innenseite des äußeren Bügelteils anlegt und so ein Anpressen des Befestigungsringes (13) und des Anlagesteges (23) am zugeordneten Sammelkasten oder an der Frontseite ermöglicht, die beim Ausführungsbeispiel im Bereich zwischen Sammelkästen und Seitenteilen einerseits und dem Befestigungsring (13) andererseits mit entsprechenden Eckverkleidungen versehen ist, damit die vom Gebläse (8) geförderte Luft den Rippenrohrblock intensiv durchströmen kann.The receiving part assigned to the upper tab (19) is designed as a U-shaped receiving pocket (21) which is designed in such a way that the tab (19) lies firmly against the inside of the outer bracket part and thus a pressing of the fastening ring (13) and the contact web (23) on the associated header box or on the front side, which in the exemplary embodiment is provided in the area between header boxes and side parts on the one hand and the fastening ring (13) on the other hand with corresponding corner cladding, so that the air conveyed by the blower (8) intensifies the finned tube block can flow through.

Der Aufnahmetasche (21) ist ein federnder Rasthaken (27) vorgeschaltet, der beim Montagevorgang, wie später noch erläutert werden wird, von der Lasche (19) zur Seite gedrückt wird, der aber dann, wenn die Lasche (19) ihre Endlage erreicht hat, sich mit seinem vorderen Ende (27a) an die Lasche (19) anlegt und ein unbeabsichtigtes Lösen der Lasche aus der Aufnahmetasche (21) verhindert.The receiving pocket (21) is preceded by a resilient latching hook (27) which, as will be explained later, is pushed to the side by the tab (19) during the assembly process, but which is then when the tab (19) has reached its end position , abuts the tab (19) with its front end (27a) and prevents the tab from unintentionally detaching from the receiving pocket (21).

Aus Fig. 4 läßt sich auch gut erkennen, daß die der unteren Lasche (20) zugeordnete Aufnahme (22) ein von der Frontseite des unteren Sammelkastens (4) vorstehender Bügel ist, der einen Schlitz (28) zum Einführen der Lasche (20) bildet.From Fig. 4 it can also be clearly seen that the receptacle (22) associated with the lower tab (20) is a bracket projecting from the front of the lower collecting box (4), which has a slot (28) for inserting the tab (20) forms.

Der Schwenkzapfen (16) schließlich, der am unteren Sammelkasten (4) befestigt ist und ebenfalls zur Frontseite hin absteht, besitzt in einem gewissen Abstand von seiner Basis zwei diametral gegenüberliegende Zapfen (29), auf deren Bedeutung bei der Beschreibung des Montagevorganges noch eingegangen wird. Die auf den Schwenkzapfen (16) aufzuschiebende Hülse (14) ist schließlich mit zwei von ihrem Innendurchmesser ausgehenden, ebenfalls diametral gegenüberliegenden und in ihren Abmessungen jenen der Zapfen (29) angepaßten Schlitzen versehen, die, wie noch erläutert werden wird, über die Zapfen (29) geschoben werden können.Finally, the pivot pin (16), which is fastened to the lower collecting box (4) and also protrudes towards the front, has two diametrically opposite pins (29) at a certain distance from its base, the significance of which will be discussed in the description of the assembly process . The sleeve (14) to be pushed onto the pivot pin (16) is finally provided with two slots, also starting from its inner diameter, which are also diametrically opposed and whose dimensions are matched to those of the pins (29), which, as will be explained, via the pins ( 29) can be pushed.

In dem in den Fig. 1 bis 3 dargestellten Befestigungszustand der Lüfterhaube (7) an dem Rippenrohrblock (2) und an den Sammelkästen (3 und 4) liegt eine Dreipunktbefestigung jeweils im Bereich der Hülse (16), der Lasche (19) und der Lasche (20) vor. Die Laschen (19 und 20) greifen in ihre Aufnahmen (21 bzw. 22) ein. Die Hülse (14) wird von den Zapfen (29) des Schwenkzapfens (16) in der in den Fig. 1 bis 3 gezeigten Lage gehalten und ebenfalls fest gegen die Frontseite des Wärmetauschers gedrückt.In the mounting state of the fan cover (7) on the finned tube block (2) and on the header boxes (3 and 4) shown in FIGS. 1 to 3, there is a three-point fastening in the area of the sleeve (16), the tab (19) and the Tab (20) in front. The tabs (19 and 20) engage in their receptacles (21 and 22). The sleeve (14) is held by the pins (29) of the pivot pin (16) in the position shown in FIGS. 1 to 3 and is also pressed firmly against the front of the heat exchanger.

Der Montagevorgang erfolgt wie folgt:The assembly process is as follows:

Die Lüfterhaube (7) wird zunächst in einer gegenüber der in den Fig. 1 und 2 dargestellten Lage um einen Winkel (α) von etwa 45° im Uhrzeigersinn verschwenkt, auf den Schwenkzapfen (16) des unteren Sammelkastens (4) aufgesteckt, und zwar soweit, bis der Befestigungsring (13) und der Anlagesteg (23) die Frontseite der Sammelkästen (3 und 4) berühren. In dieser Lage können daher die Schlitze (30) über die Zapfen (29) des Schwenkzapfens (16) geschoben werden, so daß diese Zapfen (29) vor einem Rand (31) in der Hülse (14) liegen. In dieser Stellung, in der also der Anlagesteg (23) an der Anlagefläche (24) anliegt, kann nun der Befestigungsvorgang dadurch eingeleitet werden, daß die Lüfterhaube (7) im Gegenuhrzeigersinn um den Winkel (α) verschwenkt wird; dabei greifen zum einen die Zapfen (29) des Schwenkzapfens (16) über die Fläche (31) in der Scharnierhülse (14). Zum anderen gelangt die Lasche (19) in den Bereich ihrer U-förmigen Aufnahmetasche (21) und drückt dabei den vor dem offenen Ende der Aufnahmetasche (21) liegenden Rasthaken (27) im Uhrzeigersinn nach innen, wo dessen Ende zum Beispiel in einer Ausnehmung (32) aufgenommen werden kann. Die Lasche (20) gelangt gleichzeitig in den Bereich des Schlitzes (28). Wird nun die Schwenkbewegung im Gegenuhrzeigersinn bis zum Ende geführt, dann gelangt die Stecklasche (19) in den Bereich innerhalb der U-förmigen Ausnehmung (33) und schlägt dort an. In dieser Stellung wird das Ende (27a) des federnden Rasthakens (27) frei und legt sich gegen die nach außen gewandte Fläche der Lasche (19), so daß eine Rückbewegung verhindert wird. Das Anschlagteil (25) liegt am Seitenteil (6) an und die Lasche (20) ist in ihre Endstellung innerhalb des Schlitzes (28) gelangt. Die Lüfterhaube (7) ist formschlüssig montiert. Sie kann wieder demontiert werden, wenn der Rasthaken (27) nach innen gedrückt wird.The fan cover (7) is first pivoted in an angle (α) of approximately 45 ° in a clockwise direction relative to the position shown in FIGS. 1 and 2, plugged onto the pivot pin (16) of the lower header box (4), specifically until the mounting ring (13) and the landing stage (23) touch the front of the collection boxes (3 and 4). In this position, the slots (30) can therefore be pushed over the pins (29) of the pivot pin (16) so that these pins (29) lie in front of an edge (31) in the sleeve (14). In this position, in which the contact web (23) lies against the contact surface (24), the fastening process can now be initiated by pivoting the fan cover (7) counterclockwise by the angle (α); on the one hand, the Pin (29) of the pivot pin (16) over the surface (31) in the hinge sleeve (14). On the other hand, the tab (19) comes into the area of its U-shaped receiving pocket (21) and thereby presses the latching hook (27) lying in front of the open end of the receiving pocket (21) in a clockwise direction, where its end, for example, in a recess (32) can be included. The tab (20) simultaneously reaches the area of the slot (28). If the pivoting movement is now carried out in a counterclockwise direction to the end, the plug-in tab (19) reaches the area within the U-shaped recess (33) and strikes there. In this position, the end (27a) of the resilient locking hook (27) is free and lies against the outwardly facing surface of the tab (19), so that a backward movement is prevented. The stop part (25) lies against the side part (6) and the tab (20) has reached its end position within the slot (28). The fan cover (7) is positively mounted. It can be dismantled again when the locking hook (27) is pressed inwards.

Der gesamte Montage- und auch ein Demontagevorgang kann ohne Zuhilfenahme von Werkzeug erfolgen. Der Verschwenkvorgang ist äußerst einfach und es wird eine gesonderte Ausrichtung von Ober- und Unterkanten überflüssig. Lediglich die Hülse (14) muß in der geeigneten Lage über den Schwenkzapfen (16) geführt werden. Ist dies geschehen, so genügt es, wenn im Gegenuhrzeigersinn auf die Lüfterhaube gedrückt wird, die sich dann in ihre Montagestellung verschwenkt.The entire assembly and disassembly process can be carried out without the use of tools. The pivoting process is extremely simple and there is no need for separate alignment of the top and bottom edges. Only the sleeve (14) must be guided over the pivot pin (16) in the appropriate position. Once this has been done, it is sufficient if the fan hood is pressed counterclockwise, which then pivots into its mounting position.

Im Ausführungsbeispiel sind als Sammelkästen jeweils sogenannte Wasserkästen gezeigt, weil der Rippenrohrblock von einem flüssigen Kühlmedium durchströmt wird. Es wäre aber in gleicher Weise möglich, die im Ausführungsbeispiel gezeigten Sammelkästen (3, 4) für den Betrieb des Wärmetauschers als Luft/Luft-Kühler als Luftkästen auszuführen, so daß z.B. ein Ladeluftkühler gebildet werden kann, der die gleichen baulichen Merkmale wie das gezeigte Ausführungsbeispiel aufweist.In the exemplary embodiment, so-called water tanks are shown as collecting tanks because a liquid cooling medium flows through the finned tube block. However, it would be possible in the same way to design the header boxes (3, 4) shown in the exemplary embodiment for the operation of the heat exchanger as air / air coolers as air boxes, so that e.g. a charge air cooler can be formed, which has the same structural features as the embodiment shown.

Claims (8)

  1. A heat exchanger, in particular a radiator for internal combustion engines in utility vehicles, with a fan hood (7) positioned in front of a ribbed tube block (2) which is fitted to the collector boxes (3, 4) of the ribbed tube block vertically in relation to the front thereof by means of the positive locking of interlocking clips (19, 20, 21, 22) with locking devices (27), characterised in that at least one pivoting pin/hinge connector (16, 14) is provided between the fan hood (7) and the collector boxes (3, 4) and that the clips (19, 20) and locking devices are positioned in such a way that the positive locking is effected by means of the pivoting of the fan hood (7) about the pivoting pin (16).
  2. A heat exchanger in accordance with Claim 1, characterised in that the pivoting pin (16) is positioned on the lower collector box (4) and at least one clip (21) is positioned on the upper collector box (3).
  3. A heat exchanger in accordance with Claim 1, characterised in that the pivoting pin (16) is positioned on the side (6) of the lower collector box (4), one clip (19, 21) is positioned approximately in the centre of the upper collector box (3) and a further clip (20, 22) is positioned on the side of the lower collector box (4) facing away from the pivoting pin (4).
  4. A heat exchanger in accordance with one of Claims 2 to 3, characterised in that the clip on the upper collector box (3) is designed as a U-shaped retaining pocket (21) into which a clip (19) connected to the fan hood (7) fits.
  5. A heat exchanger in accordance with Claim 4, characterised in that the clip (19) on the fan hood is held in the end position by means of a sprung snap-in hook (27) which is fixed to the collector box (3).
  6. A heat exchanger in accordance with one of Claims 3 to 5, characterised in that the clip (22) on the lower collector box (4) is a stirrup (22) with a slit (28) into which a clip protruding from the fan hood (7) can be introduced.
  7. A heat exchanger in accordance with Claim 6, characterised in that the clip (20) is positioned on the fan hood (7) in such a way that its longitudinal axis runs approximately tangentially to an arc of a circle, the central point of which is the pivoting pin (16).
  8. A heat exchanger in accordance with Claim 4, characterised in that the clip (19) position at the top of the fan hood has a locating section (23) which is pressed against a locating surface (24) on the collector box (3) in the end position.
EP95108894A 1994-06-22 1995-06-09 Heat exchanger, especially radiator for combustion engines of commercial vehicles Expired - Lifetime EP0689022B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4421835 1994-06-22
DE4421835A DE4421835A1 (en) 1994-06-22 1994-06-22 Heat exchangers, in particular coolers for internal combustion engines of commercial vehicles

Publications (2)

Publication Number Publication Date
EP0689022A1 EP0689022A1 (en) 1995-12-27
EP0689022B1 true EP0689022B1 (en) 1997-08-20

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EP95108894A Expired - Lifetime EP0689022B1 (en) 1994-06-22 1995-06-09 Heat exchanger, especially radiator for combustion engines of commercial vehicles

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US (1) US5522457A (en)
EP (1) EP0689022B1 (en)
DE (2) DE4421835A1 (en)
ES (1) ES2107272T3 (en)

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Also Published As

Publication number Publication date
ES2107272T3 (en) 1997-11-16
US5522457A (en) 1996-06-04
DE59500524D1 (en) 1997-09-25
EP0689022A1 (en) 1995-12-27
DE4421835A1 (en) 1996-01-04

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