EP0180086A2 - Oil cooler - Google Patents

Oil cooler Download PDF

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Publication number
EP0180086A2
EP0180086A2 EP85113040A EP85113040A EP0180086A2 EP 0180086 A2 EP0180086 A2 EP 0180086A2 EP 85113040 A EP85113040 A EP 85113040A EP 85113040 A EP85113040 A EP 85113040A EP 0180086 A2 EP0180086 A2 EP 0180086A2
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EP
European Patent Office
Prior art keywords
oil
oil cooler
housing chamber
seal
cooler according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP85113040A
Other languages
German (de)
French (fr)
Other versions
EP0180086B1 (en
EP0180086A3 (en
Inventor
Gebhard Schwarz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mahle Behr GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
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Publication date
Application filed by Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Publication of EP0180086A2 publication Critical patent/EP0180086A2/en
Publication of EP0180086A3 publication Critical patent/EP0180086A3/en
Application granted granted Critical
Publication of EP0180086B1 publication Critical patent/EP0180086B1/en
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Classifications

    • 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
    • F01M1/00—Pressure lubrication
    • F01M1/10—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters
    • 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
    • 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
    • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S165/00—Heat exchange
    • Y10S165/916—Oil cooler

Definitions

  • the invention relates to an oil cooler for internal combustion engines, in particular for installation between the engine and an oil filter with at least one heat exchange space through which the 01 to be cooled and one through which a cooling liquid, in particular water flows, which adjoin one another.
  • Oil coolers of this type are known in the form of disc coolers (DE-AS 28 43 423).
  • disc coolers a plurality of hollow discs are arranged in a housing through which the cooling water flows and parallel to one another and through which the oil flows and around which the cooling water flows.
  • a disadvantage of these disc coolers is the relatively complex type of manufacture, which requires soldering or welding processes.
  • Another disadvantage is the relatively high weight and the insufficient cooling capacity for some applications.
  • the invention has for its object to provide an oil cooler of the type mentioned, which is easier to manufacture and without a soldering or welding process.
  • the heat-exchange chamber through which the oil flows is designed as a housing chamber into which a heat-exchange body through which the coolant flows, which consists of a multiplicity of parallel tubes, the ends of which are each held in a bottom of a coolant-collecting space.
  • a heat-exchange body through which the coolant flows which consists of a multiplicity of parallel tubes, the ends of which are each held in a bottom of a coolant-collecting space.
  • the entire structure of the oil cooler can be made very simple if the coolant collection spaces are formed by the two opposing floors and a hood-shaped water tank, because it is then possible to design the housing chamber as a frame that is open on two sides, in the open sides of which the water boxes are inserted with seals and are each held by a flanged edge of the housing chamber. No soldering process is necessary for this either.
  • the tubes provided in the heat exchanger body can be those with an annular cross section, the ends of which are sealed in the bases by widening and / or by inserting sealing rings.
  • the tubes can in turn have a variety of fins or fins that are in the essentially lie in planes running perpendicular to the longitudinal direction of the pipes and are washed around by the oil, to be connected to a pipe fin block which can be tightly clamped in the housing chamber with the bottoms provided on its two end sides before the two water boxes are put on.
  • a circumferential seal can be provided between the bottoms and the housing chamber.
  • the housing chamber can have a continuous bore extending transversely to the tubes of the heat exchanger body, through which a hollow connecting piece can be passed in a simple manner, one end of which can be screwed to the motor and the other end of which can be screwed to the oil filter.
  • the housing chamber can rest against the engine via a circumferential seal, oil inlet openings being able to be provided within the region of this seal and the space closed off by the seal being connected to at least one connection opening to the engine.
  • the hot engine oil thereby enters the housing chamber through the oil inlet openings, flows past the pipes through which the coolant, for example water, flows, and past the fins, and expediently enters a ring space of the filter via a plurality of outlet openings, these outlet openings again lead into a room that is delimited by a circumferential seal from the oil filter.
  • the two spaces enclosed by seals on both sides of the housing chamber can each be formed by a peripheral edge of the housing chamber, on the end face of which the seal is arranged.
  • connection piece and the drainage piece for the coolant can finally be equipped with both connection pieces and with a partition be provided between the inlet and outlet connections so that the coolant can flow back into the first water tank only through part of the pipes in one direction and after the deflection in the other water tank through the second part of the pipes.
  • the oil cooler shown in FIG. 1 is designated as a whole by 1. It has a housing chamber 2, which consists of a central part 2a, essentially designed as an open frame, with two opposite closed end walls 2b and two opposite side walls 2c, in each of which a hood-shaped water box 2d or 2e is inserted on the other two open sides.
  • the middle part 2a forms a housing part into which a heat exchange body in the form of a tube fin block 18 is inserted.
  • the tube fin block 18 consists of a plurality of tubes 11a, 11b, 11c or 17a, 17b arranged parallel to one another, into which turbulence inserts (not shown) can be inserted, and of lamellar fins 18a, which lie in planes which run perpendicular to the axes of the tubes 11a to 11c and 17a and 17b.
  • These lamellar ribs 18a thus enlarge the heat exchange surface in a known manner. They are solderless with the tubes 11a to 11c or 17a, 17b, e.g. B. connected by expanding the pipes and are in thermal contact with them.
  • the ends of the tubes 11a to 11c or 17a and 17b are inserted in trays 8 and 13, which are inserted into the middle part 2a after inserting the tube fin block 18 from both sides with the interposition of a seal 13a or 8a and then against the middle part 2a jammed. This can be done by widening the free ends of the tubes 11a to 11c or 17a, 17b which protrude beyond the tube sheets 8 and 13, so that on the one hand they are pressed tightly into the tube sheets and on the other hand they are pressed towards one another and thus against one another press the seals 13a, 8a and the middle part 2a.
  • the central part 2a which is closed off by the tube sheets 8 and 13 on both sides, which are initially still open, is then closed off from the outside by the hood-shaped water boxes 2d and 2e, which form cooling liquid collecting spaces 7, 9 and 15 with the bottoms 8 and 13, through which the cooling water supplied through a connecting piece 3 in the direction of arrow 4 can flow out in the direction of arrow 16 to a discharge pipe 5 and from there in the direction of arrow 6.
  • Feed and discharge ports 3 and 5 are attached to the water tank 2d, which is also provided with a partition 10, which sits tightly on the associated bottom 8 of the upper water tank.
  • the pipes are divided into two groups, the cooling water flowing down through the pipes 11a to 11c into the collecting space 15, being deflected there and passing through the pipes 17a, 17b into the cooling liquid collecting space 9 of the upper water tank 2d and from there emerges in the direction of arrow 6.
  • the two water boxes 2d and 2e are fixedly connected to the middle part 2a in that an edge 2f of the middle part 2a is flanged around an edge of the water boxes 2d and 2e, so that these against the assigned bases 8 and 13 and against seals 12 are pressed, which produce the seal between the water tanks 2d, 2e and the associated floors 8 and 13.
  • the entire structure of the oil cooler 1 can therefore be carried out without a soldering or welding process.
  • the central part 2a is provided on the sides 2c, which run approximately perpendicular to the side walls 2b, with a plurality of openings 19, which in the exemplary embodiment are designed as bores, which allow access to the interior of the housing chamber 2. Openings 25 of the same configuration are provided on the opposite side.
  • the openings 19 and 25 each open into an annular space 26a and 26b, which is open to the outside and is delimited by a peripheral edge 30a and 30b.
  • An inserted sleeve 21 runs centrally through the housing chamber 2 and is guided through corresponding openings in the side walls 2c and in the tube fin block 18. This sleeve 21 and the openings 19 and 25 are intended for the oil flow.
  • the oil initially flows, for example in the direction of arrow 22, through the openings 25 into the housing chamber, flows around the tube fin block 18 and emerges from the openings 19 in the direction of arrow 23, flows through an oil filter, for example, and then returns in the direction of arrow 24a and 24b back through the sleeve 21 to the motor, as is clear from FIG. 3.
  • FIG. 4 shows the oil cooler in the representation according to FIG. 3, however, in the installed state, the connecting parts also being shown partly in section.
  • the engine block 40 of an internal combustion engine which is shown in sections, is provided with a bore 34, which is provided with an internal thread at its outer end.
  • a hollow connection piece 28 is screwed through the opening 20 of the oil cooler 1 is inserted.
  • an oil filter 29 is screwed onto the connecting piece 28.
  • the oil cooler 1 is sealed off from the engine block 40 by a circumferential seal 36 which is inserted into a groove in the edge 30 b.
  • the oil cooler 1 is sealed by a circumferential seal 31 which bears on the outside of the end face of the edge 30 a.
  • the oil filter 29 has openings 35 through which the oil flowing out of the openings 19 (FIG. 3) in the direction of arrow 23 can penetrate into the filter 29, is deflected there and through the opening 33 of the connecting piece 28 to the bore 34 of the engine block 40 arrives and from there is returned to the engine.
  • the uncleaned and hot engine oil passes through a connection channel 32 in the engine block 40 into the room 26 b, from there through the openings 25 into the housing chamber 2 and, as already described with reference to FIG. 3, is guided past the tube fin block 18 by the cooling water is flowed through.
  • the new oil cooler Due to its design, the new oil cooler has manufacturing advantages. But it also has a much larger cooling capacity and a much lower volume resistance for the oil, which can therefore be passed through the cooler and filter in larger quantities.

Abstract

Es wird ein Ölkühler für Verbrennungsmotoren beschrieben, der insbesondere zum Einbau zwischen Motor und einem Ölfilter dient. Der vom Öl durchströmte Wärmetauschraum dieses Ölkühlers ist als eine Gehäusekammer ausgebildet, in die ein von der Kühlflüssigkeit, insbesondere von Wasser durchströmter Wärmetauschkörper dicht eingesetzt ist, der aus vielen parallelen Rohren besteht, deren Enden in den Böden von zwei gegenüberliegenden Kühlflüssigkeitssammelräumen gehalten sind. Diese Ausgestaltung erlaubt die Herstellung von Ölkühlern ohne Löt- oder Schweißvorgänge. Die Wasserdurchströmung durch die parallelen Rohre ist außerdem genau definiert, was bei bekannten Bauformen nicht gewährleistet ist.An oil cooler for internal combustion engines is described, which is used in particular for installation between the engine and an oil filter. The heat exchange chamber of this oil cooler, through which oil flows, is designed as a housing chamber into which a heat exchange body, through which the cooling liquid, in particular water, flows, which consists of many parallel tubes, the ends of which are held in the bottoms by two opposite cooling liquid collecting chambers. This configuration allows the production of oil coolers without soldering or welding processes. The water flow through the parallel pipes is also precisely defined, which is not guaranteed with known designs.

Description

Die Erfindung betrifft ein Ölkühler für Verbrennungsmotoren, insbesondere zum Einbau zwischen Motor und einem Ölfilter mit mindestens einem vom zu kühlenden 01 durchströmten und einem von einer Kühlflüssigkeit, insbesondere Wasser durchströmten Wärmeaustauschraum, die aneinander grenzen.The invention relates to an oil cooler for internal combustion engines, in particular for installation between the engine and an oil filter with at least one heat exchange space through which the 01 to be cooled and one through which a cooling liquid, in particular water flows, which adjoin one another.

Ölkühler dieser Art sind in der Form von Scheibenkühlern (DE-AS 28 43 423) bekannt. Bei diesen Scheibenkühlern sind in einem vom Kühlwasser durchflossenem,Gehäuse mehrere hohle Scheiben hintereinander und parallel zueinander angeordnet, die vom öl durchflossen und vom Kühlwasser umspült sind. Nachteilig bei diesen Scheibenkühlern ist die relativ aufwendige Art der Herstellung, die Löt- oder Schweißvorgänge voraussetzt. Nachteilig ist ferner das relativ hohe Gewicht und die für manche Anwendungsfälle nicht ausreichende Kühlleistung.Oil coolers of this type are known in the form of disc coolers (DE-AS 28 43 423). In these disc coolers, a plurality of hollow discs are arranged in a housing through which the cooling water flows and parallel to one another and through which the oil flows and around which the cooling water flows. A disadvantage of these disc coolers is the relatively complex type of manufacture, which requires soldering or welding processes. Another disadvantage is the relatively high weight and the insufficient cooling capacity for some applications.

Aus der DE-PS 19 34 193 ist auch ein Ölkühler bekannt, bei dem das von dem Verbrennungsmotor kommende heiße öl durch eine im Inneren eines wasserdurchströmten Gehäuses angeordnete Rohrschlange geführt wird. Auch diese Bauart weist jedoch den Nachteil einer aufwendigen Herstellung auf, weil auch dort die Rohrschlange eingeschweißt oder eingelötet werden muß.From DE-PS 19 34 193 an oil cooler is also known, in which the hot oil coming from the internal combustion engine is passed through a pipe coil arranged inside a housing through which water flows. However, this design also shows the Disadvantage of a complex production because the pipe coil must also be welded or soldered there.

Der Erfindung liegt die Aufgabe zugrunde, einen Ölkühler der eingangs genannten Art zu schaffen, der einfacher und ohne einen Löt- oder Schweißvorgang herstellbar ist.The invention has for its object to provide an oil cooler of the type mentioned, which is easier to manufacture and without a soldering or welding process.

Diese Aufgabe wird dadurch gelöst, daß der vom öl durchströmte Wärmetauschraum als eine Gehäusekammer ausgebildet ist, in die ein von der Kühlflüssigkeit durchströmter Wärmetauschkörper dicht eingesetzt ist, der aus einer Vielzahl von parallelen Rohren besteht, deren Enden in je einem Boden eines Kühlflüssigkeitssammelraumes gehalten sind. Solche von Wasser-Luftkühlern her im Prinzip bekannten Wärmetauschkörper lassen sich in einfacher Weise mit Hilfe von Dichtungen o.dgl. ohne Löt- oder Schweißvorgänge in die Gehäusekammer einsetzen. Sie bedürfen auch zu ihrer Herstellung selbst keines Lötvorganges. Ein weiterer Vorteil ist, daß die Wasserdurchströmung durch die parallelen Rohre genau definiert ist, was bei bekannten Bauformen nicht gewährleistet ist.This object is achieved in that the heat-exchange chamber through which the oil flows is designed as a housing chamber into which a heat-exchange body through which the coolant flows, which consists of a multiplicity of parallel tubes, the ends of which are each held in a bottom of a coolant-collecting space. Such known from water-air coolers in principle heat exchangers can be easily or the like with the help of seals. insert into the housing chamber without soldering or welding. They also do not require any soldering process to be manufactured. Another advantage is that the water flow through the parallel pipes is precisely defined, which is not guaranteed with known designs.

Der gesamte Aufbau des ölkühlers kann sehr einfach ausgestaltet werden, wenn die Kühlflüssigkeitssammelräume durch die zwei sich gegenüberliegenden Böden und je einen aufgesetzten haubenförmigen Wasserkasten gebildet sind, weil es dann möglich ist, die Gehäusekammer als einen an zwei Seiten offenen Rahmen auszubilden, in dessen offene Seiten die Wasserkästen mit Dichtungen eingesetzt und jeweils durch einen umgebördelten Rand der Gehäusekammer gehalten sind. Auch hierzu ist kein Lötvorgang notwendig.The entire structure of the oil cooler can be made very simple if the coolant collection spaces are formed by the two opposing floors and a hood-shaped water tank, because it is then possible to design the housing chamber as a frame that is open on two sides, in the open sides of which the water boxes are inserted with seals and are each held by a flanged edge of the housing chamber. No soldering process is necessary for this either.

In an sich bekannter Weise können die im Wärmetauschkörper vorgesehenen Rohre solche mit kreisringförmigem Querschnitt sein, deren Enden in den Böden durch Aufweiten und/oder durch Einfügen von Dichtringen abgedichtet sind. Die Rohre können wiederum über eine Vielzahl von Rippen oder Lamellen, die im wesentlichen in senkrecht zur Längsrichtung der Rohre verlaufenden Ebenen liegen und vom öl umspült werden, zu einem Rohrrippenblock verbunden sein, der mit den an seinen beiden Endseiten vorgesehenen Böden dicht in der Gehäusekammer verklemmt werden kann, ehe die beiden Wasserkästen aufgesetzt werden. Auch in diesem Fall kann zwischen den Böden und der Gehäusekammer eine umlaufende Dichtung vorgesehen sein. Durch das Aufweiten der Rohrenden werden die Böden zusammengezogen und verklemmen sich am Rand der Gehäusekammer.In a manner known per se, the tubes provided in the heat exchanger body can be those with an annular cross section, the ends of which are sealed in the bases by widening and / or by inserting sealing rings. The tubes can in turn have a variety of fins or fins that are in the essentially lie in planes running perpendicular to the longitudinal direction of the pipes and are washed around by the oil, to be connected to a pipe fin block which can be tightly clamped in the housing chamber with the bottoms provided on its two end sides before the two water boxes are put on. In this case too, a circumferential seal can be provided between the bottoms and the housing chamber. By widening the pipe ends, the bottoms are pulled together and jammed at the edge of the housing chamber.

Die Gehäusekammer kann eine quer zu den Rohren des Wärmetauschkörpers verlaufende durchgehende Bohrung besitzen, durch die in einfacher Weise ein hohler Anschlußstutzen durchführbar ist, dessen eines Ende mit dem Motor und dessen anderes Ende mit dem Ölfilter verschraubt werden kann. Auf diese Weise kann die Gehäusekammer über eine umlaufende Dichtung am Motor anliegen, wobei innerhalb des Bereiches dieser Dichtung öleintrittsöffnungen vorgesehen sein können und der von der Dichtung abgeschlossene Raum mit mindestens einer Anschlußöffnung zum Motor in Verbindung steht. Das heiße Motoröl tritt dadurch durch die Öleintrittsöffnungen in die Gehäusekammer ein, strömt an den vom Kühlmittel, beispielsweise von Wasser, durchströmten Rohren und an den daran anliegenden Lamellen vorbei und tritt zweckmäßig über eine Mehrzahl von Austrittsöffnungen in einen Ringraum des Filters ein, wobei diese Austrittsöffnungen wiederum in einen Raum münden, der durch eine umlaufende Dichtung gegenüber dem ölfilter abgegrenzt ist. Die beiden von Dichtungen eingeschlossenen Räume auf beiden Seiten der Gehäusekammer können von je einen umlaufenden Rand der Gehäusekammer gebildet werden, an dessen Stirnseite jeweils die Dichtung angeordnet ist.The housing chamber can have a continuous bore extending transversely to the tubes of the heat exchanger body, through which a hollow connecting piece can be passed in a simple manner, one end of which can be screwed to the motor and the other end of which can be screwed to the oil filter. In this way, the housing chamber can rest against the engine via a circumferential seal, oil inlet openings being able to be provided within the region of this seal and the space closed off by the seal being connected to at least one connection opening to the engine. The hot engine oil thereby enters the housing chamber through the oil inlet openings, flows past the pipes through which the coolant, for example water, flows, and past the fins, and expediently enters a ring space of the filter via a plurality of outlet openings, these outlet openings again lead into a room that is delimited by a circumferential seal from the oil filter. The two spaces enclosed by seals on both sides of the housing chamber can each be formed by a peripheral edge of the housing chamber, on the end face of which the seal is arranged.

Um aus Einbaugründen sowohl den Anschlußstutzen als auch den Abflußstutzen für das Kühlmittel auf derselben Seite des ölkühlers anordnen zu können, kann schließlich einer der beiden Wasserkästen mit beiden Anschlußstutzen und mit einer Trennwand zwischen Zu- und Abflußstutzen versehen sein, so daß das Kühlmittel nur durch einen Teil der Rohre in der einen Richtung und nach der Umlenkung in dem anderen Wasserkasten dann durch den zweiten Teil der Rohre wieder in den ersten Wasserkasten zurückfließen kann.In order to be able to arrange both the connection piece and the drainage piece for the coolant on the same side of the oil cooler for installation reasons, one of the two water boxes can finally be equipped with both connection pieces and with a partition be provided between the inlet and outlet connections so that the coolant can flow back into the first water tank only through part of the pipes in one direction and after the deflection in the other water tank through the second part of the pipes.

Weitere Merkmale und Vorteile ergeben sich aus der Beschreibung der Zeichnung, in der eine bevorzugte Ausführungsform der Erfindung dargestellt ist. Es zeigen:

  • Fig. 1 Die teilweise aufgeschnittene Draufsicht auf einen erfindungsgemäßen Ölkühler,
  • Fig. 2 die teilweise geschnittene Ansicht des Ölkühlers der Fig. 1 in Richtung des Pfeiles II gesehen,
  • Fig. 3 die teilweise geschnittene Ansicht des ölkühlers in Richtung des Pfeiles III der Fig. 1 gesehen und
  • Fig. 4 die Ansicht des Ölkühlers nach Fig. 3 im eingebauten Zustand zwischen einem Motorblock und einem ölfilter.
Further features and advantages result from the description of the drawing, in which a preferred embodiment of the invention is shown. Show it:
  • 1 is a partially cutaway plan view of an oil cooler according to the invention,
  • 2 seen the partially sectioned view of the oil cooler of FIG. 1 in the direction of arrow II,
  • Fig. 3 seen the partially sectioned view of the oil cooler in the direction of arrow III of Fig. 1 and
  • Fig. 4 is the view of the oil cooler of FIG. 3 in the installed state between an engine block and an oil filter.

Der in der Fig. 1 gezeigte Ölkühler ist im ganzen mit 1 bezeichnet. Er besitzt eine Gehäusekammer 2, die aus einem im wesentlichen als offener Rahmen ausgebildeten Mittelteil 2a mit zwei gegenüberliegenden geschlossenen Stirnwänden 2b und zwei gegenüberliegenden Seitenwänden 2c besteht, in den an den beiden anderen offenen Seiten je ein haubenförmiger Wasserkasten 2d bzw. 2e eingesetzt ist. Das Mittelteil 2a bildet einen Gehäuseteil, in den ein Wärmetauschkörper in Form eines Rohrrippenblockes 18 eingesetzt ist. Der Rohrrippenblock 18 besteht dabei aus mehreren parallel zueinander angeordneten Rohren lla,llb,llc bzw. 17a,17b,in die nicht dargestellte Turbulenzeinlagen eingesetzt sein können, und aus lamellenförmigen Rippen 18a, die in Ebenen liegen, die senkrecht zu den Achsen der Rohre lla bis llc und 17a und 17b verlaufen. Diese lamellenförmigen Rippen 18a vergrößern somit in bekannter Weise die Wärmetauschfläche. Sie sind mit den Rohren lla bis llc bzw. 17a, 17b lötlos, z. B. durch Aufweiten der Rohre verbunden und stehen mit diesen in Wärmekontakt.The oil cooler shown in FIG. 1 is designated as a whole by 1. It has a housing chamber 2, which consists of a central part 2a, essentially designed as an open frame, with two opposite closed end walls 2b and two opposite side walls 2c, in each of which a hood-shaped water box 2d or 2e is inserted on the other two open sides. The middle part 2a forms a housing part into which a heat exchange body in the form of a tube fin block 18 is inserted. The tube fin block 18 consists of a plurality of tubes 11a, 11b, 11c or 17a, 17b arranged parallel to one another, into which turbulence inserts (not shown) can be inserted, and of lamellar fins 18a, which lie in planes which run perpendicular to the axes of the tubes 11a to 11c and 17a and 17b. These lamellar ribs 18a thus enlarge the heat exchange surface in a known manner. They are solderless with the tubes 11a to 11c or 17a, 17b, e.g. B. connected by expanding the pipes and are in thermal contact with them.

Die Rohre lla bis llc bzw. 17a und 17b sind mit ihren Enden in Böden 8 und 13 eingesetzt, die in den Mittelteil 2a nach dem Einsetzen des Rohrrippenblockes 18 von beiden Seiten her unter Zwischenfügung je einer Dichtung 13a bzw 8a eingelegt und dann gegen den Mittelteil 2a verklemmt werden. Dies kann dadurch geschehen, daß die freien, über die Rohrböden 8 bzw. 13 hinausstehenden Enden der Rohre lla bis llc bzw. 17a, 17b aufgeweitet werden, so daß sie einerseits dicht in den Rohrböden verpresst sind, andererseits diese wiederum aufeinander zu und damit gegen die Dichtungen 13a,8a und das Mittelteil 2a drücken. Der durch die Rohrböden 8 bzw. 13 auf beiden zunächst noch offenen Seiten abgeschlossene Mittelteil 2a wird dann nach außen jeweils durch die haubenförmigen Wasserkästen 2d und 2e abgeschlossen, die mit den Böden 8 bzw. 13 Kühlflüssigkeits-sammelräume 7, 9 bzw. 15 bilden, durch die das durch einen Anschlußstutzen 3 in Richtung des Pfeiles 4 zugeführte Kühlwasser in Richtung des Pfeiles 16 zu einem Abführstutzen 5 und von dort dann in Richtung des Pfeiles 6 abströmen kann. Zu- und Abführstutzen 3 bzw. 5 sind an dem Wasserkasten 2d angebracht, der außerdem noch mit einer Trennwand 10 versehen ist, die sich dicht auf den zugeordneten Boden 8 des oberen Wasserkastens aufsetzt. Durch diese Ausgestaltung werden die Rohre in zwei Gruppen unterteilt, wobei durch die Rohre lla bis llc das Kühlwasser nach unten in den Sammelraum 15 strömt, dort umgelenkt wird und durch die Rohre 17a, 17b in den Kühlflüssigkeitssammelraum 9 des oberen Wasserkastens 2d gelangt und von dort in Richtung des Pfeiles 6 austritt.The ends of the tubes 11a to 11c or 17a and 17b are inserted in trays 8 and 13, which are inserted into the middle part 2a after inserting the tube fin block 18 from both sides with the interposition of a seal 13a or 8a and then against the middle part 2a jammed. This can be done by widening the free ends of the tubes 11a to 11c or 17a, 17b which protrude beyond the tube sheets 8 and 13, so that on the one hand they are pressed tightly into the tube sheets and on the other hand they are pressed towards one another and thus against one another press the seals 13a, 8a and the middle part 2a. The central part 2a, which is closed off by the tube sheets 8 and 13 on both sides, which are initially still open, is then closed off from the outside by the hood-shaped water boxes 2d and 2e, which form cooling liquid collecting spaces 7, 9 and 15 with the bottoms 8 and 13, through which the cooling water supplied through a connecting piece 3 in the direction of arrow 4 can flow out in the direction of arrow 16 to a discharge pipe 5 and from there in the direction of arrow 6. Feed and discharge ports 3 and 5 are attached to the water tank 2d, which is also provided with a partition 10, which sits tightly on the associated bottom 8 of the upper water tank. With this configuration, the pipes are divided into two groups, the cooling water flowing down through the pipes 11a to 11c into the collecting space 15, being deflected there and passing through the pipes 17a, 17b into the cooling liquid collecting space 9 of the upper water tank 2d and from there emerges in the direction of arrow 6.

Die beiden Wasserkästen 2d bzw. 2e sind dadurch fest mit dem Mittelteil 2a verbunden, daß jeweils ein Rand 2f des Mittelteiles 2a um einen Rand der Wasserkästen 2d bzw. 2e umgebördelt wird, so daß diese gegen die zugeordneten Böden 8 bzw. 13 und gegen Dichtungen 12 gedrückt werden, die die Abdichtung zwischen den Wasserkästen 2d, 2e und den zugeordneten Böden 8 bzw. 13 herstellen. Der gesamte Aufbau des Ölkühlers 1 kann daher ohne einen Löt- oder Schweißvorgang erfolgen.The two water boxes 2d and 2e are fixedly connected to the middle part 2a in that an edge 2f of the middle part 2a is flanged around an edge of the water boxes 2d and 2e, so that these against the assigned bases 8 and 13 and against seals 12 are pressed, which produce the seal between the water tanks 2d, 2e and the associated floors 8 and 13. The entire structure of the oil cooler 1 can therefore be carried out without a soldering or welding process.

Der Mittelteil 2a ist auf den in etwa senkrecht zu den Seitenwänden 2b verlaufenden Seiten 2c mit mehreren, beim Ausführungsbeispiel als Bohrungen ausgeführten Öffnungen 19 versehen, die den Zugang zum Innenraum der Gehäusekammer 2 ermöglichen. Auf der gegenüberliegenden Seite sind Öffnungen 25 in gleicher Ausgestaltung vorgesehen. Die Öffnungen 19 bzw. 25 münden jeweils in einen Ringraum 26a bzw. 26b, der nach außen offen ist und von einem umlaufenden Rand 30a bzw. 30b begrenzt ist. Zentral durch die Gehäusekammer 2 verläuft eine eingesetzte Hülse 21, die durch entsprechende Öffnungen in den Seitenwänden 2c und in dem Rohrrippenblock 18 hindurchgeführt ist. Diese Hülse 21 und die Öffnungen 19 bzw. 25 sind für die öldurchströmung gedacht. Das öl strömt dabei zunächst beispielsweise in Richtung des Pfeiles 22 durch die Öffnungen 25 in die Gehäusekammer, umströmt den Rohrrippenblock 18 und tritt in Richtung des Pfeiles 23 wieder aus den öffnungen 19 aus, durchströmt beispielsweise einen ölfilter und kehrt dann in Richtung des Pfeiles 24a und 24b durch die Hülse 21 wieder zum Motor zurück, wie dies aus Fig. 3 deutlich wird.The central part 2a is provided on the sides 2c, which run approximately perpendicular to the side walls 2b, with a plurality of openings 19, which in the exemplary embodiment are designed as bores, which allow access to the interior of the housing chamber 2. Openings 25 of the same configuration are provided on the opposite side. The openings 19 and 25 each open into an annular space 26a and 26b, which is open to the outside and is delimited by a peripheral edge 30a and 30b. An inserted sleeve 21 runs centrally through the housing chamber 2 and is guided through corresponding openings in the side walls 2c and in the tube fin block 18. This sleeve 21 and the openings 19 and 25 are intended for the oil flow. The oil initially flows, for example in the direction of arrow 22, through the openings 25 into the housing chamber, flows around the tube fin block 18 and emerges from the openings 19 in the direction of arrow 23, flows through an oil filter, for example, and then returns in the direction of arrow 24a and 24b back through the sleeve 21 to the motor, as is clear from FIG. 3.

Fig.4 zeigt den Ölkühler in der Darstellung gemäß Fig. 3 jedoch im eingebauten Zustand, wobei auch die Anschlußteile ebenfalls zum Teil geschnitten dargestellt sind. Der ausschnittsweise gezeigte Motorblock 40 eines Verbrennungsmotors ist mit einer Bohrung 34 versehen, die an ihrem äußeren Ende mit einem Innengewinde versehen ist. In dieses Innengewinde ist ein hohler Anschlußstutzen 28 eingeschraubt, der durch die Öffnung 20 des Öhlkühlers 1 hindurch gesteckt ist. Auf seiner dem Motorblock 40 gegenüberliegenden Seite ist auf den Anschlußstutzen 28 ein Ölfilter 29 aufgeschraubt. Der Ölkühler 1 ist gegenüber dem Motorblock 40 durch eine umlaufende Dichtung 36 abgedichtet,die in eine Nut in dem Rand 30 b eingelegt ist. Gegenüber dem ölfilter 29 ist der Ölkühler 1 durch eine umlaufende Dichtung 31 abgedichtet, die außen an der Stirnfläche des Randes 30 a anliegt. Der Ölfilter 29 weist öffnungen 35 auf, durch die das aus den Öffnungen 19 (Fig. 3) in Richtung des Pfeiles 23 ausströmende öl in den Filter 29 eindringen kann, dort umgelenkt wird und durch die Öffnung 33 des Anschlußstutzens 28 zur Bohrung 34 des Motorblockes 40 gelangt und von dort zum Motor zurückgeführt wird. Das ungereinigte und heiße Motoröl gelangt über eine Anschlußkanal 32 im Motorblock 40 in den Raum 26 b, gelangt von dort durch die Öffnungen 25 in die Gehäusekammer 2 und wird, wie anhand von Fig. 3 bereits geschildert, am Rohrrippenblock 18 vorbeigeführt, der vom Kühlwasser durchströmt ist.FIG. 4 shows the oil cooler in the representation according to FIG. 3, however, in the installed state, the connecting parts also being shown partly in section. The engine block 40 of an internal combustion engine, which is shown in sections, is provided with a bore 34, which is provided with an internal thread at its outer end. In this internal thread, a hollow connection piece 28 is screwed through the opening 20 of the oil cooler 1 is inserted. On its side opposite the engine block 40, an oil filter 29 is screwed onto the connecting piece 28. The oil cooler 1 is sealed off from the engine block 40 by a circumferential seal 36 which is inserted into a groove in the edge 30 b. Compared to the oil filter 29, the oil cooler 1 is sealed by a circumferential seal 31 which bears on the outside of the end face of the edge 30 a. The oil filter 29 has openings 35 through which the oil flowing out of the openings 19 (FIG. 3) in the direction of arrow 23 can penetrate into the filter 29, is deflected there and through the opening 33 of the connecting piece 28 to the bore 34 of the engine block 40 arrives and from there is returned to the engine. The uncleaned and hot engine oil passes through a connection channel 32 in the engine block 40 into the room 26 b, from there through the openings 25 into the housing chamber 2 and, as already described with reference to FIG. 3, is guided past the tube fin block 18 by the cooling water is flowed through.

Der neue Ölkühler weist auf Grund seiner Bauart zum einen herstellungstechnische Vorteile auf. Er besitzt aber auch eine wesentlich größere Kühlkapazität und einen wesentlich geringeren Durchgangswiderstand für das öl, das deshalb auch in größerer Menge durch Kühler und Filter geführt werden kann.Due to its design, the new oil cooler has manufacturing advantages. But it also has a much larger cooling capacity and a much lower volume resistance for the oil, which can therefore be passed through the cooler and filter in larger quantities.

Claims (7)

1. Ölkühler für Verbrennungsmotoren, insbesondere zum Einbau zwischen Motor und einem ölfilter, mit vom zu kühlenden öl durchströmten und von einer Kühlflüssigkeit, insbesondere Wasser, durchströmten Wärmeaustauschräumen, die aneinander grenzen, dadurch gekennzeichnet, daß der vom öl durchströmte Wärmetauschraum als eine mit einem rahmenförmigen Mittelteil (2a) versehene Gehäusekammer (2) ausgebildet ist, in die ein von der Kühlflüssigkeit durchströmter Rippen-Rohrblock (18) dicht eingesetzt ist, der aus einer Vielzahl von parallelen Rohren (lla bis llc, 17a, 17b) besteht, die mit im wesentlichen in senkrecht zu ihrer Längsrichtung verlaufenden Ebenen liegenden und vom öl umspülten, durchgehenden Rippen (18a) untereinander verbunden und mit ihren Enden in den Böden (8, 13) von gegenüberliegenden und durch haubenförmige Wasserkästen (2d, 2e) abgeschlossenen Kühlflüssigkeitssammelräumen (7, 9, 15) durch Aufweiten und/oder durch Einfügen von Dichtungen abgedichtet gehalten sind, und daß in die offenen Seiten des Mittelteils (2a) jeweils die Wasserkästen (2d, 2e) mit Dichtungen (12) eingesetzt und durch einen umgebördelten Rand (2f) des Mittelteils (2a) gehalten sind. -1. Oil cooler for internal combustion engines, in particular for installation between the engine and an oil filter, with heat exchange spaces through which the oil to be cooled and a cooling liquid, in particular water, flow, which adjoin one another, characterized in that the heat exchange space through which the oil flows is one with a frame-shaped one Middle part (2a) provided housing chamber (2) is formed, in which a finned tube block (18) through which the cooling liquid flows is inserted tightly, which consists of a plurality of parallel tubes (lla to llc, 17a, 17b), which with the essentially connected to one another in planes running perpendicular to their longitudinal direction and surrounded by oil-washed, continuous ribs (18a) and with their ends in the bottoms (8, 13) of opposite coolant collecting spaces (7, 9) closed off by hood-shaped water boxes (2d, 2e) , 15) are kept sealed by expanding and / or by inserting seals, and that i n the open sides of the middle part (2a) each have the water boxes (2d, 2e) with seals (12) inserted and are held by a flanged edge (2f) of the middle part (2a). - 2. ölkühler nach Anspruch 1, dadurch gekennzeichnet, daß eine quer zu der Richtung der Rohre den Rippen-Rohrblock (18) durchquerende und gegenüber der Gehäusekammer abgedichtete Öffnung (20) vorgesehen ist, die als Befestigungsöffnung dient.2. oil cooler according to claim 1, characterized in that a transverse to the direction of the tubes the finned tube block (18) through opening and sealed with respect to the housing chamber is provided, which serves as a fastening opening. 3. Ölkühler nach Anspruch 2, dadurch gekennzeichnet, daß ein die Öffnung (20) durchsetzender hohler Anschlußstutzen (28) zur Befestigung vorgesehen ist, dessen eines Ende mit dem Motorblock (40) und dessen anderes Ende mit dem Ölfilter (29) verschraubbar ist.3. Oil cooler according to claim 2, characterized in that an opening (20) passing through hollow connecting piece (28) is provided for attachment, one end of which can be screwed to the engine block (40) and the other end to the oil filter (29). 4. Ölkühler nach Anspruch 2 und 3, dadurch gekennzeichnet, daß die Gehäusekammer (2) über eine umlaufende Dichtung (36) am Motorblock (40) anliegt und innerhalb des Bereiches dieser Dichtung mit Öleintrittsöffnungen (25) versehen ist, wobei der von der Dichtung abgeschlossene Raum (26b) mit einem Anschlußkanal (32) zum Motorblock (40) in Verbindung steht.4. Oil cooler according to claim 2 and 3, characterized in that the housing chamber (2) abuts a circumferential seal (36) on the engine block (40) and is provided within the area of this seal with oil inlet openings (25), the seal closed space (26b) with a connection channel (32) to the engine block (40) in connection. 5. Ölkühler nach Anspruch 4, dadurch gekennzeichnet, daß die Gehäusekammer (2) mit einer umlaufenden Dichtung (31) an dem Ölfilter (29) anliegt, und daß die Dichtung einen Raum (26a) der Gehäusekammer abgrenzt, in den eine Mehrzahl von Ölaustrittsöffnungen (19) mündet, über die das Öl in einen Ringraum des Ölfilters eintreten kann.5. Oil cooler according to claim 4, characterized in that the housing chamber (2) abuts with a circumferential seal (31) on the oil filter (29), and that the seal delimits a space (26a) of the housing chamber in which a plurality of oil outlet openings (19) opens through which the oil can enter an annular space of the oil filter. 6. Ölkühler nach den Ansprüchen 4 und 5, dadurch gekennzeichnet, daß die beiden von Dichtungen (36, 31) eingeschlossenen Räume von je einem umlaufenden Rand (30b, 30a) der Gehäusekammer (2) gebildet werden, an dessen Stirnseite jeweils die Dichtung angeordnet ist.6. Oil cooler according to claims 4 and 5, characterized in that the two spaces enclosed by seals (36, 31) are each formed by a peripheral edge (30b, 30a) of the housing chamber (2), on the end face of which the seal is arranged is. 7. Ölkühler nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß einer der Wasserkästen (2d) mit den Zu- und Abflußstutzen (3, 5) für das Kühlmittel und mit einer zwischen diesen verlaufenden Trennwand (10) versehen ist, die an dem zugeordneten Boden (8) dicht anliegt.7. Oil cooler according to one of claims 1 to 6, characterized in that one of the water tanks (2d) with the inlet and outlet connections (3, 5) for the coolant and with a partition wall running between them (10) is provided which the associated floor (8) lies tight.
EP85113040A 1984-11-02 1985-10-15 Oil cooler Expired - Lifetime EP0180086B1 (en)

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DE19843440064 DE3440064A1 (en) 1984-11-02 1984-11-02 OIL COOLER
DE3440064 1984-11-02

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EP0180086A3 EP0180086A3 (en) 1987-08-19
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Also Published As

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DE3440064C2 (en) 1989-04-20
EP0180086B1 (en) 1990-01-31
DE3440064A1 (en) 1986-05-07
DE3575765D1 (en) 1990-03-08
US4696339A (en) 1987-09-29
EP0180086A3 (en) 1987-08-19

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