EP3286415B1 - Oil cooler - Google Patents

Oil cooler Download PDF

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Publication number
EP3286415B1
EP3286415B1 EP16717371.5A EP16717371A EP3286415B1 EP 3286415 B1 EP3286415 B1 EP 3286415B1 EP 16717371 A EP16717371 A EP 16717371A EP 3286415 B1 EP3286415 B1 EP 3286415B1
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EP
European Patent Office
Prior art keywords
thermostatic valve
valve housing
cover plate
pieces
oil cooler
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.)
Not-in-force
Application number
EP16717371.5A
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German (de)
French (fr)
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EP3286415A1 (en
Inventor
Stefan Schmidgall
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 International GmbH
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Mahle International GmbH
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Publication of EP3286415A1 publication Critical patent/EP3286415A1/en
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Publication of EP3286415B1 publication Critical patent/EP3286415B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/002—Cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/005—Controlling temperature of lubricant
    • F01M5/007—Thermostatic control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M5/00—Heating, cooling, or controlling temperature of lubricant; Lubrication means facilitating engine starting
    • F01M5/002—Cooling
    • F01M2005/004—Oil-cooled engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/03—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means
    • F01M2011/031—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means characterised by mounting means
    • F01M2011/033—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means characterised by mounting means comprising coolers or heat exchangers

Definitions

  • the present invention relates to an oil cooler with at least two stacked in the stacking direction heat exchanger plates and a cover plate according to the preamble of claim 1.
  • the invention also relates to a method for producing such an oil cooler and a motor vehicle with such oil cooler.
  • a generic oil cooler with at least two stacked in the stacking direction heat exchanger plates and a cover plate is known, wherein between the cover plate and the adjacent heat exchanger plate, a fluid passage.
  • a thermostatic valve is provided, which is connected via its thermostatic valve housing fluid-transmitting manner with the fluid channel of the cover plate.
  • the present invention therefore deals with the problem of providing for an oil cooler of the generic type an improved or at least one alternative embodiment, by means of which in particular the oil cooler can be produced more economically.
  • the present invention is based on the general idea to produce a thermostatic valve housing made of a very good solderable material and connect it before the actual soldering with a heat exchanger block of an oil cooler, so that then the entire heat exchanger block are soldered reliably and tightly together with the thermostatic valve housing in a brazing furnace can. Subsequently, this can be controlled with only a single leak test.
  • the oil cooler according to the invention has in a known manner at least two stacked in the stacking direction heat exchanger plates and a cover plate. Between the cover plate and the adjacent heat exchanger plate extends a fluid channel, wherein the thermostatic valve via its thermostatic valve housing fluid-tight with the fluid channel of the cover plate connected is.
  • the cover plate now has two, in the direction of the thermostatic valve, inflated and thus protruding connecting pieces with a respective edge.
  • the thermostatic valve housing itself is formed of an aluminum profile, in particular of an aluminum extruded profile or a rolled aluminum profile, which is reworked separately and in particular even finished. Due to the embodiment of the thermostatic valve housing made of a material which is particularly suitable for extrusion or rolling, an aluminum alloy can be used, which is easily soldered.
  • the thermostatic valve housing additionally has two connecting pieces formed complementary to the connecting piece, which are mechanically fixed before the actual soldering in the cover plate side connecting piece.
  • the nozzle can be fixed in the cover plate-side connecting piece by means of a press fit, for example caulked or tumbled.
  • the thermostatic valve housing is soldered with its connection piece in the connecting piece of the cover plate, wherein this soldering takes place after fixing together with the soldering of the heat exchanger block in the soldering oven. Due to the mechanical fixation of the thermostat valve housing side nozzle in the cover plate side connection piece can also be dispensed with an additional required solder film, since the required Lotnach for tight soldering between the thermostatic valve housing and cover plate can be provided by the one-side solder-plated cover plate. With the oil cooler according to the invention, this can not only be made cheaper, because for example, separate sealing elements or a double seal test (once for the heat exchanger block separately and the other time in the assembled state) can be dispensed with, but also on a brazing foil. Also fasteners can be omitted in the oil cooler according to the invention, since a reliable fixation of the two components together can be ensured by the mechanical and material connection between the thermostatic valve housing and the heat exchanger block.
  • the thermostatic valve housing may also be formed from a reworked aluminum profile, between the cover plate and the thermostatic valve housing, however, an adapter plate is additionally arranged. This has two projecting in the direction of the thermostatic valve spigot with an edge, wherein the thermostatic valve housing has two complementary to the connecting piece formed nozzle, which are mechanically fixed in the adapter plate side connecting piece and wherein the thermostatic valve body is soldered with its neck in the connecting piece of the adapter plate. With the adapter plate, an increase in rigidity can be achieved.
  • the respective edge of the connecting piece has a conical inner contour, wherein it is additionally or alternatively provided that an outer contour of the connecting piece tapers towards a free end.
  • This can be provided, for example, in the manner of a chamfer.
  • Both such a taper / chamfer and the conical edge formed in the connecting piece facilitates, on the one hand, the insertion of the thermostatic valve-housing-side connecting piece into the cover-plate-side or adapter-plate-side connecting piece, as well as jamming or caulking of the connecting pieces into the connecting piece. With the methods mentioned can thus simplify the production and at the same time improve.
  • a solder plating is present anyway on the cover plate in order to be able to reliably solder it to the adjacent heat exchanger plate.
  • this solder plating is additionally used to be able to ensure a tight soldering between the cover plate side connecting piece and the thermostat valve housing side piece.
  • the adapter plate on its side facing away from the adjacent cover plate on a Lotplatt réelle is also used to be able to ensure a tight soldering between the cover plate side connecting piece and the thermostat valve housing side piece.
  • the present invention is further based on the general idea to provide a method for producing an oil cooler described above, in which first the thermostatic valve housing as Aluminiumstorpressvollprofil, for example, cuboid, is produced. The corresponding inner channels are then subsequently introduced into this aluminum extruded solid profile, for example by drilling, and the outer contours, in particular the connecting pieces, are created, for example by milling or laser cutting.
  • the steps described above can be summarized under the term reprocessing or finishing of the thermostatic valve housing.
  • an adapter plate is provided, at least two stacked in the stacking heat exchanger plates are covered with the cover plate and the adapter plate, before or after the thermostatic valve housing fixed with its two nozzles in the connection piece of the adapter plate, in particular caulked or tumbled, is. Subsequently, the heat exchanger plates, the cover plate, the adapter plate and the thermostatic valve body are soldered together.
  • Fig. 1 and 5 has an inventive oil cooler 1 at least two stacked in the stacking direction heat exchanger plates 2 and a cover 3 on.
  • the term of the oil cooler 1 used previously and below should also include other heat exchangers by means of which other fluids are cooled or tempered.
  • Such an oil cooler 1 is used for example in a commercial vehicle 14.
  • a thermostatic valve 5 which is connected via its thermostatic valve housing 6 fluid-transmitting manner to the fluid channel 4 of the cover plate 3 between the cover plate 3 and the adjacent heat exchanger plate.
  • the thermostatic valve housing 6 is now formed from a reworked aluminum profile, in particular from a reworked aluminum extruded profile or a rolled aluminum profile, and thereby produced from an aluminum alloy, which can be soldered in an optimum manner.
  • the thermostatic valve housing 6 is soldered via its socket 9 in the connecting piece 7 of the cover plate 3.
  • an adapter plate 15 is arranged, wherein the thermostatic valve housing 6 is soldered with its nozzle 9 in connection piece 16 of the adapter plate 15.
  • the adapter plate 15 has in this case two projecting in the direction of the thermostatic valve 5 connecting piece 16 with an edge 8, wherein the thermostatic valve housing 6 is mechanically fixed with its nozzle 9 in the adapter plate side connecting piece 16.
  • the adapter plate 15 is soldered to the cover plate 3, whereby in addition an increase in rigidity can be achieved.
  • the respective edge 8 of the connecting piece 7, 16 has a conical inner contour 10, in particular in the manner of a chamfer, in addition or alternatively, the nozzle 9 can taper towards a free end. Both the conical inner contour 10 and the tapered nozzle 9 can facilitate the insertion of the nozzle 9 in the connecting pieces 7, 16, as well as a fixing, in particular a caulking, the nozzle 9 in the connecting piece 7, 16.
  • the cover plate 3 has a Lotplatt ist 11, which can be dispensed with an additional Lotabeabe when soldering the thermostatic valve housing 6 with the cover 3.
  • the oil cooler 1 according to the invention is produced as follows:
  • the thermostatic valve housing 6 is made as an aluminum profile, in particular as an aluminum extruded profile, for example, the outer contours of the solid profile produced, in particular extruded or rolled thermostatic valve housing 6 in Fig. 3 is shown with broken line drawn. Subsequently, for example, inner channels 12 and the outer nozzle 9 or other components of the thermostatic valve housing 6 by reworking the aluminum full profile, for example by drilling, milling and / or grinding produced. For further production of the oil cooler 1 now at least two stacked in the stacking direction heat exchanger plates 2 are covered with the cover 3, wherein before or after the thermostatic valve housing 6 fixed with its two sockets 9 in the connecting piece 7 of the cover 3, in particular caulked or tumbled, is.
  • thermostatic valve body 6 cover plate 3 and heat exchanger plates 2 can now be soldered in a single step in a corresponding soldering oven.
  • the thermostatic valve housing 6 is soldered directly to the connecting piece 7 of the cover plate 3 without mechanical prefixing and without a nozzle 9.
  • an adapter plate 15 is provided, then at least two stacked in the stacking direction heat exchanger plates 2 are covered with the cover plate 3 and the adapter plate 15, before or after the thermostatic valve housing 6 fixed with its two nozzles 9 in the connecting piece 16 of the adapter plate 15, in particular caulked or staggered, will. Subsequently, the heat exchanger plates 2, the cover plate 3, the adapter plate 15 and the thermostatic valve housing 6 are soldered together. In this case, of course, no separately formed connecting piece 7 must be provided on the cover plate 3.
  • thermostatic valve housing 6 extruded aluminum alloy
  • a tight soldering between the thermostatic valve housing 6 and the cover plate 3 and the adapter plate 15 can be achieved without, for example, separate seals are required. Due to the common soldering now also only a single leak test sufficient, whereas in known from the prior art oil coolers always the tightness of the heat exchanger block and additionally the tightness of the heat exchanger block and attached thermostatic valve assembly must be checked.
  • thermostatic valve housing 6 such as a Wachsdehnelement, a spring and a valve body, this then by means of a not shown Cover is closed.
  • a lid can be screwed, for example, in the thermostatic valve housing 6, including, for example, a corresponding internal thread 13 is provided.
  • a soldering of the thermostatic valve housing 6 with the cover plate 3, possibly the adapter plate 15 and the heat exchanger plates 2 is usually carried out in the so-called CAB process (Controlled Atmosphere Brazing) or under vacuum, in particular, the first-mentioned soldering already used for many years in the production of Aluminium Sheübertragern and so that is proven.
  • CAB process Controlled Atmosphere Brazing
  • thermostatic valve housing 6 can be achieved a significant simplification of the assembly of the oil cooler 1, since the thermostatic valve housing 6 is first pre-fixed via its nozzle 9 in the connecting piece 7 or 16 and then soldered together with the oil cooler 1 in the soldering oven , In this way, in particular, a previously required additional sealing test can be dispensed with, as well as additional sealing elements or fastening means, for example screws, since the caulked and soldered to the cover plate 3 or to the adapter plate 15 and thermostat valve housing 6 is sufficiently fixed to the cover plate 3 or the adapter plate 15 ,

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Description

Die vorliegende Erfindung betrifft einen Ölkühler mit zumindest zwei in Stapelrichtung übereinander gestapelten Wärmetauscherplatten und einer Abdeckplatte gemäß dem Oberbegriff des Anspruchs 1. Die Erfindung betrifft außerdem ein Verfahren zur Herstellung eines solchen Ölkühlers sowie ein Kraftfahrzeug mit einem solchen Ölkühler.The present invention relates to an oil cooler with at least two stacked in the stacking direction heat exchanger plates and a cover plate according to the preamble of claim 1. The invention also relates to a method for producing such an oil cooler and a motor vehicle with such oil cooler.

Aus der EP 1 559 980 A1 ist ein gattungsgemäßer Ölkühler mit zumindest zwei in Stapelrichtung übereinander gestapelten Wärmetauscherplatten und einer Abdeckplatte bekannt, wobei zwischen der Abdeckplatte und der benachbarten Wärmetauscherplatte ein Fluidkanal verläuft. Darüber hinaus ist ein Thermostatventil vorgesehen, das über sein Thermostatventilgehäuse fluidübertragend mit dem Fluidkanal der Abdeckplatte verbunden ist.From the EP 1 559 980 A1 a generic oil cooler with at least two stacked in the stacking direction heat exchanger plates and a cover plate is known, wherein between the cover plate and the adjacent heat exchanger plate, a fluid passage. In addition, a thermostatic valve is provided, which is connected via its thermostatic valve housing fluid-transmitting manner with the fluid channel of the cover plate.

Aus der DE 10 2008 020 609 A1 ist ein weiterer Ölkühler mit in einem Gehäuse angeordneten Kühlungskanälen und einem Bypass bekannt, der von einem Bypassventil verschließbar ist. Der Ventilkörper des Bypassventils ist durch eine Öffnung im Gehäuse geführt und ragt in Querrichtung in den Bypasskanal ein. Hierdurch soll ein variabel einsetzbarer Ölkühler geschaffen werden können.From the DE 10 2008 020 609 A1 is another oil cooler with arranged in a housing cooling channels and a bypass, which is closed by a bypass valve. The valve body of the bypass valve is guided through an opening in the housing and projects transversely into the bypass channel. As a result, a variable usable oil cooler can be created.

Aus der DE 10 2005 048 294 A1 ist ein weiterer Ölkühler mit gestapelten Wärmetauscherplatten mit wenigstens zwei Öffnungen bekannt, wobei die beiden Öffnungen zwei entsprechende Kanäle bilden und wobei in Abständen zwischen den Wärmetauscherplatten vorzugsweise senkrecht zu den Kanälen stehende Strömungskanäle ausgebildet sind, die mit den Kanälen hydraulisch verbunden sind. Darüber hinaus vorgesehen ist ein Ventilglied vorgesehen, welches einen der Kanäle öffnet bzw. schließt, um das dort strömende Medium, beispielsweise Öl, entweder durch die Strömungskanäle oder durch einen Bypasskanal zu leiten.From the DE 10 2005 048 294 A1 is another oil cooler with stacked heat exchanger plates with at least two openings known, the two openings form two corresponding channels and wherein at intervals between the heat exchanger plates are preferably formed perpendicular to the channels flow channels, which are hydraulically connected to the channels. In addition, a valve member is provided which opens or closes one of the channels in order to guide the medium flowing there, for example oil, either through the flow channels or through a bypass channel.

Generell ist bei bislang aus dem Stand der Technik bekannten Ölkühlern bekannt, ein Thermostatventil separat zu fertigen und dieses an einen fertig verlöteten Wärmeübertragerblock anzubauen. Hierzu muss selbstverständlich eine dichte Verbindung zwischen dem Wärmeübertragerblock und dem Thermostatventil geschaffen werden, was mittels aufwändiger Dichtprüfungen, in diesem Fall sogar doppelter Dichtprüfungen, kontrolliert und nachgewiesen werden muss. Dabei wird zunächst der Wärmeübertragerblock einer Dichtprüfung unterzogen und anschließend die Baueinheit aus Wärmeübertragerblock und Thermostatventilgehäuse einer nochmaligen Dichtprüfung.In general, it is known in hitherto known from the prior art oil coolers to manufacture a thermostatic valve separately and grow this to a finished soldered heat exchanger block. For this purpose, of course, a tight connection between the heat exchanger block and the thermostatic valve must be created, which must be checked and proven by means of complex sealing tests, in this case even double leak tests. First, the heat exchanger block is subjected to a leak test and then the assembly of heat exchanger block and thermostatic valve housing a re-sealing test.

Die vorliegende Erfindung beschäftigt sich daher mit dem Problem, für einen Ölkühler der gattungsgemäßen Art eine verbesserte oder zumindest eine alternative Ausführungsform anzugeben, mittels welcher insbesondere der Ölkühler kostengünstiger herstellbar ist.The present invention therefore deals with the problem of providing for an oil cooler of the generic type an improved or at least one alternative embodiment, by means of which in particular the oil cooler can be produced more economically.

Dieses Problem wird erfindungsgemäß durch die Gegenstände der unabhängigen Ansprüche gelöst. Vorteilhafte Ausführungsformen sind Gegenstand der abhängigen Ansprüche.This problem is solved according to the invention by the subject matters of the independent claims. Advantageous embodiments are the subject of the dependent claims.

Die vorliegende Erfindung beruht auf dem allgemeinen Gedanken, ein Thermostatventilgehäuse aus einem sehr gut lötbaren Material herzustellen und dieses vor dem eigentlichen Verlöten mit einem Wärmeübertragerblock eines Ölkühlers zu verbinden, so dass anschließend der gesamte Wärmeübertragerblock zusammen mit dem Thermostatventilgehäuse in einem Lötofen zuverlässig und dicht verlötet werden kann. Anschließend kann dieser mit lediglich einer einzigen Dichtprüfung kontrolliert werden. Der erfindungsgemäße Ölkühler weist dabei in bekannter Weise zumindest zwei in Stapelrichtung übereinander gestapelte Wärmetauscherplatten sowie eine Abdeckplatte auf. Zwischen der Abdeckplatte und der benachbarten Wärmetauscherplatte verläuft dabei ein Fluidkanal, wobei das Thermostatventil über sein Thermostatventilgehäuse fluiddicht mit dem Fluidkanal der Abdeckplatte verbunden ist. Erfindungsgemäß weist nun die Abdeckplatte zwei in Richtung des Thermostatventils aufgetulpte und dadurch abstehende Anschlussstutzen mit einem jeweiligen Rand auf. Das Thermostatventilgehäuse selbst ist aus einem Aluminiumprofil, insbesondere aus einem Aluminiumstrangpressprofil oder einem gewalzten Aluminiumprofil, ausgebildet, welches separat nachbearbeitet und insbesondere sogar fertig bearbeitet wird. Durch die Ausführungsform des Thermostatventilgehäuses aus einem Material, welches insbesondere für ein Strangpressen oder Walzen geeignet ist, kann eine Aluminiumlegierung verwendet werden, welche problemlos verlötbar ist. Das Thermostatventilgehäuse weist zusätzlich zwei komplementär zu den Anschlussstutzen ausgebildete Stutzen auf, die vor dem eigentlichen Verlöten in den abdeckplattenseitigen Anschlussstutzen mechanisch fixiert werden. Hierbei können die Stutzen in den abdeckplattenseitigen Anschlussstutzen mittels einer Presspassung fixiert werden, beispielsweise verstemmt oder vertaumelt. Das Thermostatventilgehäuse ist dabei mit seinen Stutzen in den Anschlussstutzen der Abdeckplatte verlötet, wobei diese Verlötung nach dem Fixieren gemeinsam mit dem Verlöten des Wärmeübertragerblocks im Lötofen erfolgt. Durch die mechanische Fixierung der thermostatventilgehäuseseitigen Stutzen in den abdeckplattenseitigen Anschlussstutzen kann auch auf eine zusätzlich erforderliche Lotfolie verzichtet werden, da das erforderlich Lotangebot zur dichten Verlötung zwischen Thermostatventilgehäuse und Abdeckplatte von der einseitig lotplattierten Abdeckplatte bereitgestellt werden kann. Mit dem erfindungsgemäß hergestellten Ölkühler kann dieser nicht nur kostengünstiger ausgebildet werden, da beispielsweise auf separate Dichtelemente oder eine doppelte Dichtprüfung (einmal für den Wärmeübertragerblock separat und das andere Mal in montiertem Zustand) verzichtet werden kann, sondern auch auf eine Lotfolie. Auch Befestigungselemente können bei dem erfindungsgemäßen Ölkühler entfallen, da durch die mechanische und zugleich stoffliche Verbindung zwischen dem Thermostatventilgehäuse und dem Wärmeübertragerblock eine zuverlässige Fixierung der beiden Komponenten aneinander gewährleistet werden kann.The present invention is based on the general idea to produce a thermostatic valve housing made of a very good solderable material and connect it before the actual soldering with a heat exchanger block of an oil cooler, so that then the entire heat exchanger block are soldered reliably and tightly together with the thermostatic valve housing in a brazing furnace can. Subsequently, this can be controlled with only a single leak test. The oil cooler according to the invention has in a known manner at least two stacked in the stacking direction heat exchanger plates and a cover plate. Between the cover plate and the adjacent heat exchanger plate extends a fluid channel, wherein the thermostatic valve via its thermostatic valve housing fluid-tight with the fluid channel of the cover plate connected is. According to the invention, the cover plate now has two, in the direction of the thermostatic valve, inflated and thus protruding connecting pieces with a respective edge. The thermostatic valve housing itself is formed of an aluminum profile, in particular of an aluminum extruded profile or a rolled aluminum profile, which is reworked separately and in particular even finished. Due to the embodiment of the thermostatic valve housing made of a material which is particularly suitable for extrusion or rolling, an aluminum alloy can be used, which is easily soldered. The thermostatic valve housing additionally has two connecting pieces formed complementary to the connecting piece, which are mechanically fixed before the actual soldering in the cover plate side connecting piece. Here, the nozzle can be fixed in the cover plate-side connecting piece by means of a press fit, for example caulked or tumbled. The thermostatic valve housing is soldered with its connection piece in the connecting piece of the cover plate, wherein this soldering takes place after fixing together with the soldering of the heat exchanger block in the soldering oven. Due to the mechanical fixation of the thermostat valve housing side nozzle in the cover plate side connection piece can also be dispensed with an additional required solder film, since the required Lotangebot for tight soldering between the thermostatic valve housing and cover plate can be provided by the one-side solder-plated cover plate. With the oil cooler according to the invention, this can not only be made cheaper, because for example, separate sealing elements or a double seal test (once for the heat exchanger block separately and the other time in the assembled state) can be dispensed with, but also on a brazing foil. Also fasteners can be omitted in the oil cooler according to the invention, since a reliable fixation of the two components together can be ensured by the mechanical and material connection between the thermostatic valve housing and the heat exchanger block.

Alternativ kann das Thermostatventilgehäuse zwar ebenfalls aus einem nachbearbeiteten Aluminiumprofil ausgebildet sein, zwischen der Abdeckplatte und dem Thermostatventilgehäuse ist jedoch noch zusätzlich eine Adapterplatte angeordnet. Diese weist zwei in Richtung des Thermostatventils abstehende Anschlussstutzen mit einem Rand auf, wobei das Thermostatventilgehäuse zwei komplementär zu den Anschlussstutzen ausgebildete Stutzen aufweist, die in den adapterplattenseitigen Anschlussstutzen mechanisch fixiert sind und wobei das Thermostatventilgehäuse mit seinen Stutzen in den Anschlussstutzen der Adapterplatte verlötet ist. Mit der Adapterplatte kann eine Erhöhung der Steifigkeit erreicht werden. Mit der Adapterplatte können aber noch weitere Vorteile realisiert werden, nämlich insbesondere die Anordnung der Anschlussstutzen derart, dass das Thermostatventilgehäuse nicht auf die eher weit auseinanderliegenden Anschlussstutzen der Abdeckplatte ausgerichtet werden muss, sondern kurz und damit leicht, bauraumoptimierend und kostengünstig gehalten werden kann. Hierzu können beispielsweise Umlenkkanäle in die Adapterplatte eingeformt werden. Hierdurch ist auch eine nahezu frei wählbare Positionierung des Thermostatventils auf der Adapterplatte des Ölkühlers möglich, wodurch sich äußere Umstände besser berücksichtigen lassen.Alternatively, although the thermostatic valve housing may also be formed from a reworked aluminum profile, between the cover plate and the thermostatic valve housing, however, an adapter plate is additionally arranged. This has two projecting in the direction of the thermostatic valve spigot with an edge, wherein the thermostatic valve housing has two complementary to the connecting piece formed nozzle, which are mechanically fixed in the adapter plate side connecting piece and wherein the thermostatic valve body is soldered with its neck in the connecting piece of the adapter plate. With the adapter plate, an increase in rigidity can be achieved. With the adapter plate, however, other advantages can be realized, namely in particular the arrangement of the connecting piece such that the thermostatic valve housing does not have to be aligned with the rather far-reaching connection piece of the cover plate, but short and thus easy, space-saving and can be kept inexpensively. For this example, deflection channels can be formed in the adapter plate. As a result, an almost arbitrary positioning of the thermostatic valve on the adapter plate of the oil cooler is possible, which can be better taken into account external circumstances.

Bei einer vorteilhaften Weiterbildung der erfindungsgemäßen Lösung weist der jeweilige Rand des Anschlussstutzens eine konische Innenkontur auf, wobei zusätzlich oder alternativ vorgesehen ist, dass sich eine Außenkontur der Stutzen zu einem freien Ende hin verjüngt. Dies kann beispielsweise in der Art einer Fase vorgesehen sein. Sowohl eine derartige Verjüngung/Fase als auch der im Anschlussstutzen ausgebildete konische Rand erleichtert zum einen das Einführen des thermostatventilgehäuseseitigen Stutzens in den abdeckplattenseitigen oder adapterplattenseitigen Anschlussstutzen, ebenso wie ein Verklemmen bzw. Verstemmen der Stutzen in den Anschlussstutzen. Mit den genannten Methoden lässt sich somit die Fertigung vereinfachen und zugleich verbessern.In an advantageous development of the solution according to the invention, the respective edge of the connecting piece has a conical inner contour, wherein it is additionally or alternatively provided that an outer contour of the connecting piece tapers towards a free end. This can be provided, for example, in the manner of a chamfer. Both such a taper / chamfer and the conical edge formed in the connecting piece facilitates, on the one hand, the insertion of the thermostatic valve-housing-side connecting piece into the cover-plate-side or adapter-plate-side connecting piece, as well as jamming or caulking of the connecting pieces into the connecting piece. With the methods mentioned can thus simplify the production and at the same time improve.

Bei einer vorteilhaften Weiterbildung der erfindungsgemäßen Lösung weist die Abdeckplatte an ihrer der benachbarten Wärmetauscherplatte abgewandten Seite eine Lotplattierung auf. Eine derartige Lotplattierung ist an der Abdeckplatte ohnehin vorhanden, um diese zuverlässig mit der benachbarten Wärmetauscherplatte verlöten zu können. Im erfindungsgemäßen Ölkühler wird diese Lotplattierung jedoch zusätzlich dazu genutzt, um ein dichtes Verlöten zwischen den abdeckplattenseitigen Anschlussstutzen und den thermostatventilgehäuseseitigen Stutzen gewährleisten zu können. In gleicher Weise kann auch die Adapterplatte an ihrer der benachbarten Abdeckplatte abgewandten Seite eine Lotplattierung auf.In an advantageous development of the solution according to the invention, the cover plate on its side facing away from the adjacent heat exchanger plate on a Lotplattierung on. Such a solder plating is present anyway on the cover plate in order to be able to reliably solder it to the adjacent heat exchanger plate. In the oil cooler according to the invention, however, this solder plating is additionally used to be able to ensure a tight soldering between the cover plate side connecting piece and the thermostat valve housing side piece. In the same way, the adapter plate on its side facing away from the adjacent cover plate on a Lotplattierung.

Die vorliegende Erfindung beruht weiter auf dem allgemeinen Gedanken, ein Verfahren zur Herstellung eines zuvor beschriebenen Ölkühlers anzugeben, bei welchem zunächst das Thermostatventilgehäuse als Aluminiumstrangpressvollprofil, beispielsweise quaderförmig, hergestellt wird. In dieses Aluminiumstrangpressvollprofil werden nun anschließend, beispielsweise durch Bohren, die entsprechenden inneren Kanäle eingebracht, sowie beispielsweise durch Fräsen oder Laserschneiden die Außenkonturen, insbesondere die Stutzen, geschaffen. Im Großen und Ganzen können die zuvor beschriebenen Arbeitsschritte subsummierend unter dem Begriff Nachbearbeiten bzw. Fertigbearbeiten des Thermostatventilgehäuses zusammengefasst werden. Anschließend werden zumindest zwei in Stapelrichtung übereinander gestapelte Wärmetauscherplatten mit der Abdeckplatte abgedeckt, wobei vorher oder danach das Thermostatventilgehäuse mit seinen beiden Stutzen in den Anschlussstutzen der Abdeckplatte mechanisch fixiert, insbesondere verstemmt, und damit vorfixiert wird. Der gesamte Wärmeübertragerblock mit Abdeckplatte und Wärmetauscherplatten sowie das in der Abdeckplatte fixierte Thermostatventilgehäuse werden nun im Lötofen gemeinsam verlötet und damit dicht miteinander verbunden. Anschließend können weitere Komponenten, wie beispielsweise zumindest ein Wachsdehnelement und/oder eine Feder sowie ein Ventilkörper in das Thermostatventilgehäuse eingebaut und dieses mittels eines Deckels verschlossen werden. Der große Vorteil bei dem erfindungsgemäßen Verfahren ist, dass das Verlöten sowohl des Wärmeübertragerblocks als auch des Thermostatventilgehäuses gemeinsam in einem einzigen Arbeitsschritt erfolgt und dadurch auch lediglich eine sich daran anschließende Dichtprüfung erforderlich ist.The present invention is further based on the general idea to provide a method for producing an oil cooler described above, in which first the thermostatic valve housing as Aluminiumstorpressvollprofil, for example, cuboid, is produced. The corresponding inner channels are then subsequently introduced into this aluminum extruded solid profile, for example by drilling, and the outer contours, in particular the connecting pieces, are created, for example by milling or laser cutting. By and large, the steps described above can be summarized under the term reprocessing or finishing of the thermostatic valve housing. Subsequently, at least two stacked in the stacking direction heat exchanger plates are covered with the cover plate, wherein before or after the thermostatic valve housing mechanically fixed with its two sockets in the connecting piece of the cover plate, in particular caulked, and thus prefixed. The entire heat exchanger block with cover plate and heat exchanger plates and the fixed in the cover thermostatic valve housing are now soldered together in the soldering oven and thus tightly connected. Subsequently, further components, such as at least one Wachsdehnelement and / or a spring and a valve body can be installed in the thermostatic valve housing and this closed by means of a lid. The big advantage of the invention The method is that the soldering of both the heat exchanger block and the thermostatic valve housing takes place together in a single step and thereby only a subsequent sealing test is required.

Wird alternativ noch eine Adapterplatte vorgesehen, so werden zumindest zwei in Stapelrichtung übereinander gestapelte Wärmetauscherplatten mit der Abdeckplatte und der Adapterplatte abgedeckt, wobei vorher oder danach das Thermostatventilgehäuse mit seinen beiden Stutzen in den Anschlussstutzen der Adapterplatte fixiert, insbesondere verstemmt oder vertaumelt, wird. Anschließend werden die Wärmetauscherplatten, die Abdeckplatte, die Adapterplatte und das Thermostatventilgehäuse gemeinsam verlötet.Alternatively, if an adapter plate is provided, at least two stacked in the stacking heat exchanger plates are covered with the cover plate and the adapter plate, before or after the thermostatic valve housing fixed with its two nozzles in the connection piece of the adapter plate, in particular caulked or tumbled, is. Subsequently, the heat exchanger plates, the cover plate, the adapter plate and the thermostatic valve body are soldered together.

Zweckmäßig erfolgt ein Verlöten des Ölkühlers im CAB-Verfahren (Controlled Atmosphere Brazing) oder unter Vakuum. Das sogenannte CAB-Verfahren wird dabei bereits langjährig in der Herstellung von Aluminiumwärmeübertragern, wie beispielsweise Ölkühlern, eingesetzt und ist dadurch sowohl ausgereift als auch bewährt.Appropriately, a soldering of the oil cooler in the CAB process (Controlled Atmosphere Brazing) or under vacuum. The so-called CAB process is already used for many years in the production of Aluminiumwärmeübertragern, such as oil coolers, and is therefore both mature and proven.

Weitere wichtige Merkmale und Vorteile der Erfindung ergeben sich aus den Unteransprüchen, aus den Zeichnungen und aus der zugehörigen Figurenbeschreibung anhand der Zeichnungen.Other important features and advantages of the invention will become apparent from the dependent claims, from the drawings and from the associated figure description with reference to the drawings.

Es versteht sich, dass die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen.It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the present invention.

Bevorzugte Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden in der nachfolgenden Beschreibung näher erläutert, wobei sich gleiche Bezugszeichen auf gleiche oder ähnliche oder funktional gleiche Komponenten beziehen.Preferred embodiments of the invention are illustrated in the drawings and are explained in more detail in the following description, wherein the same reference numerals refer to the same or similar or functionally identical components.

Dabei zeigen, jeweils schematisch,Show, in each case schematically,

Fig. 1Fig. 1
eine Ansicht auf einen erfindungsgemäßen Ölkühler mit an einer Abdeckplatte angeordnetem Thermostatventilgehäuse,a view of an oil cooler according to the invention with arranged on a cover plate thermostatic valve housing,
Fig. 2Fig. 2
eine Ansicht auf die Abdeckplatte,a view of the cover plate,
Fig. 3Fig. 3
eine Ansicht auf das Thermostatventilgehäuse,a view of the thermostatic valve housing,
Fig. 4Fig. 4
eine Darstellung wie in Fig. 3, jedoch mit angedeuteten Innenkonturen,a representation like in Fig. 3 , but with indicated inner contours,
Fig. 5Fig. 5
eine Schnittdarstellung durch den Ölkühler im Bereich der Abdeckplatte und des daran angelöteten Thermostatventilgehäuses,a sectional view through the oil cooler in the region of the cover plate and soldered thereto thermostatic valve housing,
Fig. 6Fig. 6
eine Explosionsdarstellung eines erfindungsgemäßen Ölkühlers mit einer zusätzlichen Adapterplatte.an exploded view of an oil cooler according to the invention with an additional adapter plate.

Entsprechend den Fig. 1 und 5 weist ein erfindungsgemäßer Ölkühler 1 zumindest zwei in Stapelrichtung übereinander gestapelte Wärmetauscherplatten 2 sowie eine Abdeckplatte 3 auf. Generell soll der zuvor und im Folgenden benutzte Begriff des Ölkühlers 1 auch andere Wärmeübertrager umfassen, mittels welchen andere Fluide gekühlt oder temperiert werden. Ein solcher Ölkühler 1 ist beispielsweise in einem Nutzfahrzeug 14 eingesetzt. Zwischen der Abdeckplatte 3 und der benachbarten Wärmetauscherplatte 2 verläuft dabei ein Fluidkanal 4. Darüber hinaus vorgesehen ist ein Thermostatventil 5, welches über sein Thermostatventilgehäuse 6 fluidübertragend mit dem Fluidkanal 4 der Abdeckplatte 3 verbunden ist. Betrachtet man nun die Fig. 1, 2 und 5, so kann man erkennen, dass die Abdeckplatte 3 zwei in Richtung des Thermostatventils 5 abstehende Anschlussstutzen 7 mit einem Rand 8 aufweist, wogegen das Thermostatventilgehäuse 6 zwei komplementär zu den Anschlussstutzen 7 ausgebildete Stutzen 9 aufweist, welche in den abdeckplattenseitigen Anschlussstutzen 7 mechanisch fixiert, insbesondere verstemmt, sind. Erfindungsgemäß ist nun das Thermostatventilgehäuse 6 aus einem nachbearbeiteten Aluminiumprofil, insbesondere aus einem nachbearbeiteten Aluminiumstrangpressprofil oder einem gewalzten Aluminiumprofil, ausgebildet und dadurch aus einer Aluminiumlegierung hergestellt, die optimal gelötet werden kann. Das Thermostatventilgehäuse 6 ist dabei über seine Stutzen 9 in den Anschlussstutzen 7 der Abdeckplatte 3 verlötet.According to the Fig. 1 and 5 has an inventive oil cooler 1 at least two stacked in the stacking direction heat exchanger plates 2 and a cover 3 on. In general, the term of the oil cooler 1 used previously and below should also include other heat exchangers by means of which other fluids are cooled or tempered. Such an oil cooler 1 is used for example in a commercial vehicle 14. In addition, there is provided a thermostatic valve 5, which is connected via its thermostatic valve housing 6 fluid-transmitting manner to the fluid channel 4 of the cover plate 3 between the cover plate 3 and the adjacent heat exchanger plate. Looking now at the Fig. 1, 2 and 5 , so you can tell that the cover plate 3 has two protruding in the direction of the thermostatic valve 5 connecting piece 7 with an edge 8, whereas the thermostatic valve housing 6 has two complementary to the connecting piece 7 formed nozzle 9, which mechanically fixed in the cover plate side connecting piece 7, in particular caulked. According to the invention, the thermostatic valve housing 6 is now formed from a reworked aluminum profile, in particular from a reworked aluminum extruded profile or a rolled aluminum profile, and thereby produced from an aluminum alloy, which can be soldered in an optimum manner. The thermostatic valve housing 6 is soldered via its socket 9 in the connecting piece 7 of the cover plate 3.

Betrachtet man die Fig. 6, so kann man bei der dort dargestellten Ausführungsform erkennen, dass zwischen der Abdeckplatte 3 und dem Thermostatventilgehäuse 6 eine Adapterplatte 15 angeordnet ist, wobei das Thermostatventilgehäuse 6 mit seinen Stutzen 9 in Anschlussstutzen 16 der Adapterplatte 15 verlötet ist. Die Adapterplatte 15 weist in diesem Fall zwei in Richtung des Thermostatventils 5 abstehende Anschlussstutzen 16 mit einem Rand 8 auf, wobei das Thermostatventilgehäuse 6 mit seinen Stutzen 9 in den adapterplattenseitigen Anschlussstutzen 16 mechanisch fixiert ist. Die Adapterplatte 15 ist dabei auf die Abdeckplatte 3 gelötet, wodurch zusätzlich auch eine Erhöhung der Steifigkeit erreicht werden kann. Mit der Adapterplatte 15 können aber noch weitere Vorteile realisiert werden, nämlich insbesondere die Anordnung der Anschlussstutzen 16 derart, dass das Thermostatventilgehäuse 6 nicht auf die eher weit auseinanderliegenden Anschlussstutzen 7 der Abdeckplatte 3 ausgerichtet werden muss, sondern kurz und damit leicht, bauraumoptimierend und kostengünstig gehalten werden kann. Hierzu können beispielsweise Umlenkkanäle 17 in die Adapterplatte 15 eingeformt werden. Wären diese Umlenkkanäle 17 direkt in die Abdeckplatte 3 eingeformt, so könnte sich dies unter Umständen nachteilig auf die Festigkeit des Ölkühlers 1 auswirken. Hierdurch ist auch eine nahezu frei wählbare Positionierung des Thermostatventils 5 auf der Adapterplatte 15 des Ölkühlers 1 möglich, wodurch sich äußere Umstände besser berücksichtigen lassen.Looking at the Fig. 6 , it can be seen in the embodiment shown there, that between the cover plate 3 and the thermostatic valve housing 6, an adapter plate 15 is arranged, wherein the thermostatic valve housing 6 is soldered with its nozzle 9 in connection piece 16 of the adapter plate 15. The adapter plate 15 has in this case two projecting in the direction of the thermostatic valve 5 connecting piece 16 with an edge 8, wherein the thermostatic valve housing 6 is mechanically fixed with its nozzle 9 in the adapter plate side connecting piece 16. The adapter plate 15 is soldered to the cover plate 3, whereby in addition an increase in rigidity can be achieved. With the adapter plate 15 but other benefits can be realized, namely in particular the arrangement of the connecting piece 16 such that the thermostatic valve housing 6 does not have to be aligned with the rather far-reaching connection piece 7 of the cover 3, but kept short and therefore easy, space-optimizing and cost can be. For this purpose, for example deflection channels 17 can be formed in the adapter plate 15. If these deflecting channels 17 were formed directly in the cover plate 3, then this could possibly adversely affect the strength of the oil cooler 1. This is also a nearly arbitrary positioning of the thermostatic valve 5 on the adapter plate 15 of the oil cooler 1 possible, which can better take into account external circumstances.

Betrachtet man insbesondere die Fig. 2, 5 und 6, so kann man erkennen, dass der jeweilige Rand 8 des Anschlussstutzens 7, 16 eine konische Innenkontur 10, insbesondere in der Art einer Fase, aufweist, wobei zusätzlich oder alternativ die Stutzen 9 sich zu einem freien Ende hin verjüngen können. Sowohl die konische Innenkontur 10 als auch die sich verjüngenden Stutzen 9 können dabei das Einführen der Stutzen 9 in die Anschlussstutzen 7, 16 erleichtern, ebenso wie ein Fixieren, insbesondere ein Verstemmen, der Stutzen 9 in den Anschlussstutzen 7, 16. An ihrer der benachbarten Wärmetauscherplatte 2 zugewandten Seite, besitzt die Abdeckplatte 3 eine Lotplattierung 11, wodurch auf eine zusätzliche Lotzugabe beim Verlöten des Thermostatventilgehäuses 6 mit der Abdeckscheibe 3 verzichtet werden kann.Looking in particular at the Fig. 2 . 5 and 6 , it can be seen that the respective edge 8 of the connecting piece 7, 16 has a conical inner contour 10, in particular in the manner of a chamfer, in addition or alternatively, the nozzle 9 can taper towards a free end. Both the conical inner contour 10 and the tapered nozzle 9 can facilitate the insertion of the nozzle 9 in the connecting pieces 7, 16, as well as a fixing, in particular a caulking, the nozzle 9 in the connecting piece 7, 16. At its the adjacent Heat exchanger plate 2 facing side, the cover plate 3 has a Lotplattierung 11, which can be dispensed with an additional Lotabeabe when soldering the thermostatic valve housing 6 with the cover 3.

Hergestellt wird der erfindungsgemäße Ölkühler 1 wie folgt:The oil cooler 1 according to the invention is produced as follows:

Zunächst wird das Thermostatventilgehäuse 6 als Aluminiumprofil, insbesondere als Aluminiumstrangpressprofil, hergestellt, wobei beispielsweise die Außenkonturen des als Vollprofil hergestellten, insbesondere stranggepressten oder gewalzten Thermostatventilgehäuses 6 in Fig. 3 mit unterbrochen gezeichneter Linie dargestellt ist. Anschließend werden beispielsweise innere Kanäle 12 sowie auch die außenliegenden Stutzen 9 bzw. weitere Komponenten des Thermostatventilgehäuses 6 durch Nachbearbeiten des Aluminiumvollprofils, beispielsweise durch Bohren, Fräsen und/oder Schleifen, hergestellt. Zur weiteren Herstellung des Ölkühlers 1 werden nun zumindest zwei in Stapelrichtung übereinander gestapelte Wärmetauscherplatten 2 mit der Abdeckplatte 3 abgedeckt, wobei vorher oder danach das Thermostatventilgehäuse 6 mit seinen beiden Stutzen 9 in den Anschlussstutzen 7 der Abdeckplatte 3 fixiert, insbesondere verstemmt oder vertaumelt, wird. Der beispielsweise gemäß der Fig. 1 gezeigte Verbund aus Thermostatventilgehäuse 6, Abdeckplatte 3 sowie Wärmetauscherplatten 2 kann nun in einem einzigen Arbeitsschritt in einem entsprechenden Lötofen gelötet werden. Rein theoretisch ist auch denkbar, dass das Thermostatventilgehäuse 6 ohne mechanische Vorfixierung und ohne Stutzen 9 direkt mit den Anschlussstutzen 7 der Abdeckplatte 3 verlötet wird.First, the thermostatic valve housing 6 is made as an aluminum profile, in particular as an aluminum extruded profile, for example, the outer contours of the solid profile produced, in particular extruded or rolled thermostatic valve housing 6 in Fig. 3 is shown with broken line drawn. Subsequently, for example, inner channels 12 and the outer nozzle 9 or other components of the thermostatic valve housing 6 by reworking the aluminum full profile, for example by drilling, milling and / or grinding produced. For further production of the oil cooler 1 now at least two stacked in the stacking direction heat exchanger plates 2 are covered with the cover 3, wherein before or after the thermostatic valve housing 6 fixed with its two sockets 9 in the connecting piece 7 of the cover 3, in particular caulked or tumbled, is. The example according to the Fig. 1 shown composite of thermostatic valve body 6, cover plate 3 and heat exchanger plates 2 can now be soldered in a single step in a corresponding soldering oven. In theory, it is also conceivable that the thermostatic valve housing 6 is soldered directly to the connecting piece 7 of the cover plate 3 without mechanical prefixing and without a nozzle 9.

Wird alternativ noch eine Adapterplatte 15 vorgesehen, so werden zumindest zwei in Stapelrichtung übereinander gestapelte Wärmetauscherplatten 2 mit der Abdeckplatte 3 und der Adapterplatte 15 abgedeckt, wobei vorher oder danach das Thermostatventilgehäuse 6 mit seinen beiden Stutzen 9 in den Anschlussstutzen 16 der Adapterplatte 15 fixiert, insbesondere verstemmt oder vertaumelt, wird. Anschließend werden die Wärmetauscherplatten 2, die Abdeckplatte 3, die Adapterplatte 15 und das Thermostatventilgehäuse 6 gemeinsam verlötet. In diesem Fall müssen an der Abdeckplatte 3 natürlich keine gesondert ausgebildeten Anschlussstutzen 7 vorgesehen werden.Alternatively, if an adapter plate 15 is provided, then at least two stacked in the stacking direction heat exchanger plates 2 are covered with the cover plate 3 and the adapter plate 15, before or after the thermostatic valve housing 6 fixed with its two nozzles 9 in the connecting piece 16 of the adapter plate 15, in particular caulked or staggered, will. Subsequently, the heat exchanger plates 2, the cover plate 3, the adapter plate 15 and the thermostatic valve housing 6 are soldered together. In this case, of course, no separately formed connecting piece 7 must be provided on the cover plate 3.

Der große Vorteil dieser Herstellung basiert darauf, dass aufgrund der Materialauswahl für das Thermostatventilgehäuse 6 (strangpressfähige Aluminiumlegierung) eine dichte Verlötung zwischen dem Thermostatventilgehäuse 6 und der Abdeckplatte 3 bzw. der Adapterplatte 15 erreicht werden kann, ohne dass hierfür beispielsweise separate Dichtungen erforderlich sind. Durch das gemeinsame Verlöten reicht nunmehr auch lediglich eine einzige Dichtheitsprüfung aus, wogegen bei aus dem Stand der Technik bekannten Ölkühlern stets die Dichtheit des Wärmeübertragerblocks und zusätzlich noch die Dichtheit der aus Wärmeübertragerblock und angebautem Thermostatventil bestehenden Baueinheit überprüft werden mussten.The great advantage of this production is based on the fact that due to the choice of materials for the thermostatic valve housing 6 (extruded aluminum alloy) a tight soldering between the thermostatic valve housing 6 and the cover plate 3 and the adapter plate 15 can be achieved without, for example, separate seals are required. Due to the common soldering now also only a single leak test sufficient, whereas in known from the prior art oil coolers always the tightness of the heat exchanger block and additionally the tightness of the heat exchanger block and attached thermostatic valve assembly must be checked.

Ist der Lötprozess abgeschlossen, können weitere Bauteile in das Thermostatventilgehäuse 6 eingebaut werden, wie beispielsweise ein Wachsdehnelement, eine Feder sowie ein Ventilkörper, wobei dieses anschließend mittels eines nicht gezeigten Deckels verschlossen wird. Ein derartiger Deckel kann beispielsweise in das Thermostatventilgehäuse 6 eingeschraubt werden, wozu beispielsweise ein entsprechendes Innengewinde 13 vorgesehen wird. Ein Verlöten des Thermostatventilgehäuses 6 mit der Abdeckplatte 3, ggf. der Adapterplatt 15 und den Wärmetauscherplatten 2 erfolgt dabei üblicherweise im sogenannten CAB-Verfahren (Controlled Atmosphere Brazing) oder unter Vakuum, wobei insbesondere das zuerst genannte Lötverfahren bereits langjährig beim Herstellen von Aluminiumwärmeübertragern eingesetzt und damit erprobt ist. Mit dem erfindungsgemäß, erstmals aus einem Aluminiumvollprofil hergestellten Thermostatventilgehäuse 6 kann eine deutliche Vereinfachung der Montage des Ölkühlers 1 erreicht werden, da das Thermostatventilgehäuse 6 zunächst über seine Stutzen 9 in den Anschlussstutzen 7 oder 16 vorfixiert und anschließend zusammen mit dem Ölkühler 1 im Lötofen verlötet wird. Hierdurch kann insbesondere auf eine bisher erforderliche zusätzliche Dichtprüfung verzichtet werden, ebenso wie auf zusätzliche Dichtelemente oder Befestigungsmittel, beispielsweise Schrauben, da das an der Abdeckplatte 3 oder an der Adapterplatte 15 verstemmte und verlötete Thermostatventilgehäuse 6 ausreichend an der Abdeckplatte 3 oder der Adapterplatte 15 fixiert ist.If the soldering process is completed, further components can be installed in the thermostatic valve housing 6, such as a Wachsdehnelement, a spring and a valve body, this then by means of a not shown Cover is closed. Such a lid can be screwed, for example, in the thermostatic valve housing 6, including, for example, a corresponding internal thread 13 is provided. A soldering of the thermostatic valve housing 6 with the cover plate 3, possibly the adapter plate 15 and the heat exchanger plates 2 is usually carried out in the so-called CAB process (Controlled Atmosphere Brazing) or under vacuum, in particular, the first-mentioned soldering already used for many years in the production of Aluminiumwärmeübertragern and so that is proven. With the invention, for the first time made of a solid aluminum profile thermostatic valve housing 6 can be achieved a significant simplification of the assembly of the oil cooler 1, since the thermostatic valve housing 6 is first pre-fixed via its nozzle 9 in the connecting piece 7 or 16 and then soldered together with the oil cooler 1 in the soldering oven , In this way, in particular, a previously required additional sealing test can be dispensed with, as well as additional sealing elements or fastening means, for example screws, since the caulked and soldered to the cover plate 3 or to the adapter plate 15 and thermostat valve housing 6 is sufficiently fixed to the cover plate 3 or the adapter plate 15 ,

Claims (9)

  1. Oil cooler (1)
    - with at least two heat exchanger plates (2) stacked above one another in stacking direction and a cover plate (3),
    - wherein a fluid channel (4) extends between the cover plate (3) and the adjacent heat exchanger plate (2),
    - with a thermostatic valve (5) which is connected to the fluid channel (4) in a fluid-transmitting manner via its thermostatic valve housing (6),
    characterised in that
    - the thermostatic valve housing (6) is a formed from a finished aluminium profiled element,
    - the cover plate (3) has two connecting pieces (7) protruding in the direction of the thermostatic valve (5) with an edge (8),
    - the thermostatic valve housing (6) has two pieces (9) configured to be complementary to the connecting pieces (7), the former being secured mechanically in the connecting pieces (7) on the side of the cover plate,
    - the thermostatic valve housing (6) with its pieces (9) is soldered into the connecting pieces (7) of the cover plate (3),
    or
    - an adapter plate (15) is arranged between the cover plate (3) and the thermostatic valve housing (6),
    - the adapter plate (15) has two connecting pieces (16) protruding in the direction of the thermostatic valve (5) with an edge (8),
    - the thermostatic valve housing (6) has two pieces (9) configured to be complementary to the connecting pieces (16), which are secured mechanically into the connecting pieces (16) on the side of the adapter plate and
    - wherein the thermostatic valve housing (6) with its pieces (9) is soldered into the connecting pieces (16) of the adapter plate (15).
  2. Oil cooler according to claim 1,
    characterised in that
    - the respective edge (8) of the connecting piece (7, 16) has a conical inner contour (10) and/or
    - an outer contour of the pieces (9) tapers towards a free end.
  3. Oil cooler according to any of the preceding claims,
    characterised in that
    the cover plate (3) on its side facing the adjacent heat exchanger plate (2) has a solder plating (11).
  4. Oil cooler according to any of the preceding claims,
    characterised in that
    the thermostatic valve housing (6) is a finished aluminium extrusion profiled element or a rolled profiled element.
  5. Oil cooler according to any of the preceding claims,
    characterised in that
    the thermostatic valve housing (6) with its pieces (9) is secured by a press fit into the connecting pieces (7) on the side of the cover plate or the connecting pieces (16) on the side of the adapter plate.
  6. Method for producing an oil cooler (1) according to any of the preceding claims, wherein
    - the thermostatic valve housing (6) is made as an aluminium extrusion solid profiled element or a rolled aluminium solid profiled element,
    - the thermostatic valve housing (6) is finished by drilling and/or milling and/or grinding and in this way both the inner channels (12) and the outer pieces (9) are produced,
    - at least two heat exchanger plates (2) stacked above one another in stacking direction are covered by the cover plate (3), wherein beforehand or afterwards the thermostatic valve housing (6) is secured with its two pieces (9) into the connecting pieces (7) of the cover plate (3), in particular caulked or clinched, or
    - at least two heat exchanger plates (2) stacked above one another in stacking direction are covered by the cover plate (3) and the adapter plate (15), wherein beforehand or afterwards the thermostatic valve housing (6) is secured with its two pieces (9) into the connecting pieces (16) of the adapter plate (15), in particular caulked or clinched,
    - the heat exchanger plates (2), the cover plate (3) and if necessary the adapter plate (15) and the thermostatic valve housing (6) are soldered together.
  7. Method according to claim 6,
    characterised in that
    the oil cooler (1) is soldered in a Controlled Atmosphere Brazing method (CAB) or under a vacuum.
  8. Method according to claim 6 or 7,
    characterised in that
    at least one wax expansion element and/or a spring and a valve body are incorporated into the thermostatic valve housing (6) and the latter is closed by means of a cover.
  9. Motor vehicle, in particular a utility vehicle (14), having at least one oil cooler (1) according to any of claims 1 to 5.
EP16717371.5A 2015-04-24 2016-04-19 Oil cooler Not-in-force EP3286415B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015207593.1A DE102015207593A1 (en) 2015-04-24 2015-04-24 oil cooler
PCT/EP2016/058619 WO2016169916A1 (en) 2015-04-24 2016-04-19 Oil cooler

Publications (2)

Publication Number Publication Date
EP3286415A1 EP3286415A1 (en) 2018-02-28
EP3286415B1 true EP3286415B1 (en) 2018-12-12

Family

ID=55794975

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16717371.5A Not-in-force EP3286415B1 (en) 2015-04-24 2016-04-19 Oil cooler

Country Status (4)

Country Link
US (1) US10107158B2 (en)
EP (1) EP3286415B1 (en)
DE (1) DE102015207593A1 (en)
WO (1) WO2016169916A1 (en)

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USD863360S1 (en) * 2016-07-22 2019-10-15 Improved Racing Products, LLC Engine oil line adapter block
US10900557B2 (en) 2018-11-13 2021-01-26 Dana Canada Corporation Heat exchanger assembly with integrated valve with pressure relief feature for hot and cold fluids
DE102020204271A1 (en) 2019-04-05 2020-10-08 Dana Canada Corporation Heat exchanger arrangement with integrated valve and pressure bypass
CN113970263A (en) * 2020-07-25 2022-01-25 浙江三花汽车零部件有限公司 Heat exchange assembly and vehicle thermal management system
CN112013711A (en) * 2020-09-09 2020-12-01 浙江银轮机械股份有限公司 Drainage plate and heat exchanger
DE102022202732A1 (en) 2022-03-21 2023-09-21 Mahle International Gmbh Stacked disk heat exchanger for a thermal management module

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DE19750814C5 (en) * 1997-11-17 2005-08-18 Modine Manufacturing Co., Racine Heat exchangers, in particular oil coolers
FR2853725B1 (en) * 2003-04-09 2017-06-09 Valeo Thermique Moteur Sa COOLING MODULE WITH DERIVATION, IN PARTICULAR FOR A MOTOR VEHICLE
DE102004004975B4 (en) 2004-01-31 2015-04-23 Modine Manufacturing Co. Plate heat exchangers
DE202005017975U1 (en) * 2005-08-30 2007-01-11 Mann + Hummel Gmbh Automotive oil radiator has a by-pass passage extending from the oil inlet through one of the tubes to the oil outlet
DE102005048294A1 (en) 2005-10-08 2007-04-12 Modine Manufacturing Co., Racine Soldered heat exchanger and manufacturing process
DE102007010393B4 (en) * 2007-03-03 2011-07-14 Modine Manufacturing Co., Wis. Heat exchanger
DE102008020609A1 (en) 2008-04-24 2009-10-29 Mann + Hummel Gmbh Heat exchangers, in particular oil coolers
JP5298100B2 (en) * 2010-11-15 2013-09-25 トヨタ自動車株式会社 Vehicle heat exchanger
US9239195B2 (en) 2011-04-26 2016-01-19 Hyundai Motor Company Heat exchanger for vehicle
JP5983335B2 (en) * 2011-11-30 2016-08-31 株式会社デンソー Heat exchanger
CA2873462C (en) * 2012-05-31 2020-03-31 Dana Canada Corporation Heat exchanger assemblies with integrated valve
CN106662236B (en) * 2014-09-05 2019-02-01 株式会社科伦斯 Transmission oil bypasses assembly
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Also Published As

Publication number Publication date
US20180163586A1 (en) 2018-06-14
DE102015207593A1 (en) 2016-10-27
WO2016169916A1 (en) 2016-10-27
EP3286415A1 (en) 2018-02-28
US10107158B2 (en) 2018-10-23

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