EP1676087A1 - Coolant radiator for a motor vehicle - Google Patents

Coolant radiator for a motor vehicle

Info

Publication number
EP1676087A1
EP1676087A1 EP04765111A EP04765111A EP1676087A1 EP 1676087 A1 EP1676087 A1 EP 1676087A1 EP 04765111 A EP04765111 A EP 04765111A EP 04765111 A EP04765111 A EP 04765111A EP 1676087 A1 EP1676087 A1 EP 1676087A1
Authority
EP
European Patent Office
Prior art keywords
coolant
box
heat exchanger
additional heat
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.)
Withdrawn
Application number
EP04765111A
Other languages
German (de)
French (fr)
Inventor
Reinhard Heine
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mahle Behr GmbH and Co KG
Original Assignee
Behr GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Behr GmbH and Co KG filed Critical Behr GmbH and Co KG
Publication of EP1676087A1 publication Critical patent/EP1676087A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/08—Arrangements of lubricant coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/053—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight
    • F28D1/0535—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being straight the conduits having a non-circular cross-section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0234—Header boxes; End plates having a second heat exchanger disposed there within, e.g. oil cooler
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P2060/00—Cooling circuits using auxiliaries
    • F01P2060/04—Lubricant cooler
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0089—Oil coolers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/008—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for vehicles
    • F28D2021/0091—Radiators
    • F28D2021/0094—Radiators for recooling the engine coolant
    • 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 a coolant cooler of a motor vehicle according to the preamble of patent claim 1.
  • Coolant coolers for motor vehicles with an integrated oil cooler are known, for. B. by EP-A 0 866 300, DE-A 101 06 515 or DE-A 103 03 542 of the applicant.
  • the oil cooler or another additional heat exchanger is arranged in one of the coolant boxes, preferably in the box on the coolant outlet side, and the outside flows over and cooled by the coolant.
  • Known oil cooler (DE-C 43. 08 858) are designed as disc, plate or flat-tube heat exchanger. They have an oil inlet and an oil outlet nozzle, which are inserted and sealed through corresponding openings in the wall of the coolant box.
  • the oil connections are therefore arranged on the outside of the coolant boxes, which also have a coolant inlet or outlet connection.
  • the coolant inlet connector is located at the top of the inlet box and the coolant outlet connector is located at the bottom of the outlet box, so that the tube-fin block is flowed through almost diagonally.
  • the coolant can collect in front of the outlet nozzle and is sucked out by the coolant pump.
  • the oil cooler is therefore arranged above the outlet nozzle, ie the oil inlet and outlet nozzles are located above the coolant outlet nozzle. In some cases, an arrangement of the coolant
  • the outlet piece is located above the integrated oil cooler and its oil connections.
  • the coolant outlet connection is therefore outside the oil cooler area and its oil connections. This arrangement means that the distance between the oil connections is relatively small or must be reduced - depending on the size of the coolant box.
  • it is therefore necessary either to increase the number of flow channels (disks, flat tubes), that is to say to also design the coolant box higher, or to make the disks or flat tubes wider, which widen the
  • Coolant box or the tube sheet results.
  • An oil cooler with a few disks and a large nozzle spacing is cheaper in terms of cost.
  • a coolant nozzle is arranged between the connection nozzles of the additional heat exchanger. This has the advantage that - for a given coolant box - a larger nozzle spacing of the additional heat exchanger is obtained, ie. H. longer and therefore fewer pipes or discs are required. This lowers the
  • An inner length of the coolant box can thus be used essentially to the full for the length of the additional heat exchanger.
  • the additional heat exchanger is displaced within the coolant box cross section in such a way that the distance to the coolant nozzle is increased.
  • the advantage of an improved coolant, in particular coolant, outlet flow is thus achieved because the coolant can collect better on an inlet or outlet side of the oil cooler due to the increased distance.
  • the coolant nozzle is arranged approximately in the middle between the oil nozzles, which results in a symmetrical and therefore lower-loss coolant flow.
  • arrangements of the coolant connector outside the center between the oil connectors can also be advantageous.
  • the wall of the coolant box, in which the coolant nozzle and the nozzle of the additional heat exchanger are arranged is slightly curved outwards.
  • This has the advantage of a favorable coolant flow from or to the nozzle.
  • the coolant boxes are designed as injection molded plastic parts.
  • all-metal coolers are also possible, in which the coolant boxes are also made of metal, preferably aluminum - as is described in the prior art mentioned at the beginning.
  • An oil cooler for example, can be used as an additional heat exchanger in the coolant box.
  • FIG. 1 shows a coolant cooler with an integrated oil cooler
  • FIG. 2 shows a section through a coolant box with a transmission oil cooler
  • FIG. 2a shows a cross section through the coolant box
  • FIG. 3 shows a section through a coolant box with a curved box wall
  • FIG. 3 shows a cross section through the coolant box
  • FIG. 4 shows a 3-D representation of a coolant box.
  • Fig. 1 shows a coolant / air cooler 1, which is designed as a cross-flow cooler and is installed in the position shown in the engine compartment of a motor vehicle, not shown.
  • the coolant cooler 1 has a cooler block 2 consisting of pipes and fins (not shown), the pipes being arranged horizontally, and so on. the. Ribs to a .solid
  • the ends of the tubes are connected to tube sheets 3, 4, placed on soft coolant boxes 5, 6 and mechanically connected.
  • the coolant boxes 5, 6 are preferably made as plastic tip parts.
  • the coolant box 5 on the left in the drawing has a coolant inlet connection 7 in its upper area, while on the in the
  • an outlet 8 is arranged in the lower, but not in the lowest area.
  • a charge air cooler 9, which is largely covered, is connected to the coolant boxes 5, 6.
  • the coolant cooler 1 is part of a cooling module, which is not shown completely, and its coolant connections 7, 8 are connected to a coolant circuit, not shown, of the internal combustion engine of the motor vehicle.
  • an oil cooler, not shown is arranged, which has two oil connections in the form of oil sockets 10, 11, which protrude from the coolant box 6, ie out of its rear wall 6a and are sealed off from the rear wall.
  • Oil to be cooled for example gear oil of an automatic transmission, not shown, is supplied to the oil cooler via the connector 10 (or 11), and the cooled oil is drawn off via the connector 11 (or 0).
  • F ⁇ g. 2 shows a section through a coolant box 12, which has a front longitudinal wall 13 and a rear longitudinal wall 14, in the middle of which a coolant outlet connection 15 is arranged.
  • An oil cooler 16 is arranged in the interior of the coolant box 12 and is constructed, for example, from flat tubes or disks (as described in the prior art mentioned at the outset) and is held and sealed in the coolant box 12 via an inlet connection 17 and an outlet connection 8 ,
  • a front gap 19 is arranged between the front wall 13 and the oil cooler 16 and a rear gap 20 is arranged between the rear wall 14 and the oil cooler 16, the rear gap 20 being significantly larger than the front gap 19.
  • FIG. 2a shows a cross section through the coolant box 12 in the area of the nozzle 15, the oil cooler 16 being shown schematically as a rectangular cross section. It can also be seen here that the front gap 19 is significantly smaller than the rear gap 20, i. H. the oil cooler 16 has been moved from the center towards the front wall 13. This results in favorable flow and outflow conditions on the coolant side.
  • the coolant box 12, which is again made of plastic, is placed on a metallic tube sheet 21 and mechanically connected to it. A tube end 22 of a flat tube, not shown, is received in the tube sheet 21.
  • the tubes, the corrugated fins and the tube sheet are soldered into a metallic block.
  • the direction of air flow is indicated by an arrow L.
  • FIG. 3 shows a further embodiment of a coolant box 23, which is designed similarly to the coolant box 12 according to FIG. 2, but has an outwardly curved rear wall 24, in which the coolant outlet connection 25 is arranged.
  • FIG. 3a shows the coolant cate 23 in section in the area of the outlet connection 25.
  • the gap 26 here is further enlarged compared to the gap 20 of the embodiment according to FIGS. 2 and 2a.
  • FIGS. 1, 2 and 3 shows a 3-D representation of a coolant box 27 with oil sockets 28, 29 and coolant outlet sockets 30 arranged between them.
  • oil sockets 28, 29 and coolant outlet sockets 30 arranged between them.

Abstract

The invention relates to a coolant radiator for a motor vehicle, comprising a radiator block (2) made of tubes and ribs, a coolant inlet area (5) comprising a coolant inlet pipe connection (7), a cooling agent outlet area (6) comprising a cooling agent outlet pipe connection (8), wherein an oil radiator provided with oil connections (10, 11) which are guided out from the cooling agent area (6) is arranged. According to the invention, the coolant outlet connection (8) is arranged between the oil connections (10, 11).

Description

BEHR GmbH & Co. KG Mauserstraße 3, 70469 Stuttgart BEHR GmbH & Co. KG Mauserstrasse 3, 70469 Stuttgart
Kühlmittelkühler eines KraftfahrzeugesCoolant cooler of a motor vehicle
Die Erfindung betrifft einen Kühlmittelkühler eines Kraftfahrzeuges nach dem Oberbegriff des Patentanspruches 1.The invention relates to a coolant cooler of a motor vehicle according to the preamble of patent claim 1.
Kühlmittelkühler für Kraftfahrzeuge mit einem integrierten Ölkühler sind bekannt, z. B. durch die EP-A 0 866 300, die die DE-A 101 06 515 oder die DE- A 103 03 542 der Anmelderin. Der Ölkühler bzw. ein anderer Zusatzwärmeübertrager ist dabei in einem der Kühlmittelkästen, vorzugsweise im kühl- mittelaustrittsseitigen Kasten angeordnet und wird auf seiner Außenseite vom Kühlmittel überströmt und gekühlt. Bekannte Ölkühler (DE-C 43.08 858) sind als Scheiben-, Platten- oder Flachrohrwärmeübertrager ausgebildet. Sie weisen einen Öleintritts- und einen Ölaustrittsstutzen auf, die durch entsprechende Öffnungen in der Wand des Kühlmittelkastens hindurchge- steckt und abgedichtet werden. Die Ölanschlüsse sind daher auf der Außenseite der Kühlmittelkästen angeordnet, die ebenfalls einen Kühlmitteleintrittsoder Austrittsstutzen aufweisen. Bei bekannten Querstromkühlern, bei welchen die Kühlmittelrohre waagerecht und die Kühlmittelkästen senkrecht angeordnet sind, befindet sich der Kuhlmitteleintrittsstutzen oben am Eintritts- kästen und der Kühlmittelaustrittsstutzen unten am Austrittskasten, sodass der Rohr-Rippen-Block quasi diagonal durchströmt wird. Das Kühlmittel kann sich vor dem Austrittsstutzen sammeln und wird von dort durch die Kühlmittelpumpe abgesaugt. Der Ölkühler wird daher oberhalb des Austrittstutzens angeordnet, d. h. die Ölein- und -austrittsstutzen befinden sich oberhalb des Kühlmittelaustrittsstutzens. Teilweise ist eine Anordnung des Kühlmittelaus-Coolant coolers for motor vehicles with an integrated oil cooler are known, for. B. by EP-A 0 866 300, DE-A 101 06 515 or DE-A 103 03 542 of the applicant. The oil cooler or another additional heat exchanger is arranged in one of the coolant boxes, preferably in the box on the coolant outlet side, and the outside flows over and cooled by the coolant. Known oil cooler (DE-C 43. 08 858) are designed as disc, plate or flat-tube heat exchanger. They have an oil inlet and an oil outlet nozzle, which are inserted and sealed through corresponding openings in the wall of the coolant box. The oil connections are therefore arranged on the outside of the coolant boxes, which also have a coolant inlet or outlet connection. In known cross-flow coolers, in which the coolant tubes are arranged horizontally and the coolant boxes are arranged vertically, the coolant inlet connector is located at the top of the inlet box and the coolant outlet connector is located at the bottom of the outlet box, so that the tube-fin block is flowed through almost diagonally. The coolant can collect in front of the outlet nozzle and is sucked out by the coolant pump. The oil cooler is therefore arranged above the outlet nozzle, ie the oil inlet and outlet nozzles are located above the coolant outlet nozzle. In some cases, an arrangement of the coolant
BESTATIGUNGSKOPIE trittsstutzens im unteren Kastenbereich nicht möglich - in diesem Falle hat man den Austrittsstutzen oberhalb des integrierten Ölkühlers und seiner Ölanschlüsse angeordnet. Grundsätzlich befindet sich der Kühlmittelaustrittsstutzen daher außerhalb des Ölkühlerbereiches und seiner Ölanschlüs- se. Diese Anordnung hat zur Folge, dass der Abstand der Ölanschlüsse relativ gering ist bzw. reduziert werden muss - je nach Größe des Kühlmittelkastens. Um die erforderliche Ölkühlerleistung bereitzustellen, ist es daher notwendig, entweder die Zahl der Strömungskanäle (Scheiben, Flachrohre) zu erhöhen, d. h. auch den Kühlmittelkasten höher auszubilden oder die Scheiben oder Flachrohre breiter zu gestalten, was eine Verbreiterung desBESTATIGUNGSKOPIE tapping piece in the lower box area not possible - in this case the outlet piece is located above the integrated oil cooler and its oil connections. Basically, the coolant outlet connection is therefore outside the oil cooler area and its oil connections. This arrangement means that the distance between the oil connections is relatively small or must be reduced - depending on the size of the coolant box. In order to provide the required oil cooler performance, it is therefore necessary either to increase the number of flow channels (disks, flat tubes), that is to say to also design the coolant box higher, or to make the disks or flat tubes wider, which widen the
Kühlmittelkastens bzw. des Rohrbodens zur Folge hat. Kostenmäßig ist ein Ölkühler mit wenigen Scheiben und großem Stutzenabstand günstiger.Coolant box or the tube sheet results. An oil cooler with a few disks and a large nozzle spacing is cheaper in terms of cost.
Es ist Aufgabe der vorliegenden Erfindung, einen Kühlmittelkühler der ein- gangs genannten Art hinsichtlich der Anordnung des Zusatzwärmeübertragers im Kühlmittelkasten zu verbessern, sodass der gesamte Kühler einschließlich Ölkühler oder Zusatzwärmeübertrager kostengünstig herstellbar und besser an die Einbauverhältnisse anpassbar ist.It is an object of the present invention to improve a coolant cooler of the type mentioned at the outset with regard to the arrangement of the additional heat exchanger in the coolant box, so that the entire cooler, including the oil cooler or additional heat exchanger, can be produced inexpensively and can be better adapted to the installation conditions.
Diese Aufgabe wird durch die Merkmale des Patentanspruches 1 gelöst. Erfindungsgemäß ist vorgesehen, dass ein Kühlmittelstutzen zwischen den Anschlussstutzen des Zusatzwärmeübertragers angeordnet ist. Damit wird der Vorteil erreicht, dass man - für einen vorgegebenen Kühlmittelkasten - einen größeren Stutzenabstand des Zusatzwärmeübertragers erhält, d. h. längere und damit weniger Rohre oder Scheiben benötigt. Dies senkt dieThis object is solved by the features of claim 1. According to the invention, it is provided that a coolant nozzle is arranged between the connection nozzles of the additional heat exchanger. This has the advantage that - for a given coolant box - a larger nozzle spacing of the additional heat exchanger is obtained, ie. H. longer and therefore fewer pipes or discs are required. This lowers the
Kosten des Zusatzwärmeübertragers. Eine innere Länge des Kühlmittelkastens kann somit im wesentlichen voll für die Länge des Zusatzwärmeübertragers ausgenutzt werden.Additional heat exchanger costs. An inner length of the coolant box can thus be used essentially to the full for the length of the additional heat exchanger.
In vorteilhafter Ausgestaltung der Erfindung ist der Zusatzwärmeübertrager innerhalb des Kühlmittelkastenquerschnittes derart verschoben, dass der Abstand zum Kühlmittelstutzen vergrößert ist. Damit wird der Vorteil einer verbesserten Kühlmittel-, insbesondere Kühlmitteiaustrittsströmung erreicht, weil sich das Kühlmittel durch den vergrößerten Abstand besser auf einer Eintritts- oder Austrittsseite des Ölkühlers sammeln kann. Somit sind zwi- sehen einer Vorder- und einer Rückseite des Kühlmittelkastens unterschiedlich große Spalte zum Zusatzwärmeübertrager gegeben, wodurch die Durchströmung des Zusatzwärmeübertragers und die Strömung vom oder zum Kühlmittelstutzen begünstigt wird. Der kühlmittelseitige Druckabfall wird so- mit günstig beeinflusst.In an advantageous embodiment of the invention, the additional heat exchanger is displaced within the coolant box cross section in such a way that the distance to the coolant nozzle is increased. The advantage of an improved coolant, in particular coolant, outlet flow is thus achieved because the coolant can collect better on an inlet or outlet side of the oil cooler due to the increased distance. Thus, see a front and a rear of the coolant box given different sized gaps to the additional heat exchanger, whereby the flow through the additional heat exchanger and the flow from or to the coolant nozzle is favored. The pressure drop on the coolant side is thus favorably influenced.
Nach einer vorteilhaften Ausgestaltung der Erfindung ist der Kühlmittelstutzen etwa in der Mitte zwischen den Ölstutzen angeordnet, was eine symmetrische und daher verlustärmere Kühlmittelströmung zur Folge hat. Anderer- seits können - bei entsprechenden Einbauforderungen - auch Anordnungen des Kühlmittelstutzens außerhalb der Mitte zwischen den Ölstutzen vorteilhaft sein.According to an advantageous embodiment of the invention, the coolant nozzle is arranged approximately in the middle between the oil nozzles, which results in a symmetrical and therefore lower-loss coolant flow. On the other hand, with appropriate installation requirements, arrangements of the coolant connector outside the center between the oil connectors can also be advantageous.
Nach einer vorteilhaften Ausgestaltung der Erfindung ist die Wand des Kühlmittelkastens, in welcher der Kühlmittelstutzen und die Stutzen .des Zusatzwärmeübertragers angeordnet sind, leicht nach außen gewölbt. Damit ergibt sich als Vorteil eine günstige Kühlmittelströmung vom oder zum Stutzen. Im Übrigen ist bei der erfindungsgemäßen Anordnung des Kühlmittelstutzens von Vorteil, dass der Querschnitt des Zusatzwärmeübertragers klei- ner gestaltet werden kann (weil der Stutzenabstand größer und die Rohre länger werden) und somit ein kleinerer Teil des Querschnittes des Kühlmittelkastens durch den Zusatzwärmeübertrager ausfüllt wird. Damit kann der Zusatzwärmeübertrager auch besser um- und durchströmt werden.According to an advantageous embodiment of the invention, the wall of the coolant box, in which the coolant nozzle and the nozzle of the additional heat exchanger are arranged, is slightly curved outwards. This has the advantage of a favorable coolant flow from or to the nozzle. In addition, it is advantageous in the arrangement of the coolant connector according to the invention that the cross section of the additional heat exchanger can be made smaller (because the connector distance is larger and the pipes become longer) and thus a smaller part of the cross section of the coolant box is filled by the additional heat exchanger. This means that the additional heat exchanger can also flow around and through better.
Nach einer vorteilhaften Ausgestaltung der Erfindung sind die Kühlmittelkästen als Kunststoffspritzteile ausgebildet. Möglich sind jedoch auch Ganzmetallkühler, bei welchen auch die Kühlmittelkästen in Metall, vorzugsweise Aluminium ausgeführt sind - wie das im eingangs erwähnten Stand der Technik beschrieben ist.According to an advantageous embodiment of the invention, the coolant boxes are designed as injection molded plastic parts. However, all-metal coolers are also possible, in which the coolant boxes are also made of metal, preferably aluminum - as is described in the prior art mentioned at the beginning.
Als Zusatzwärmeübertrager im Kühlmittelkasten ist beispielsweise ein Ölkühler verwendbar.An oil cooler, for example, can be used as an additional heat exchanger in the coolant box.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und wird im Folgenden näher beschriebe . Es zeigen Fig. 1 einen Kühlmittelkühler mit integriertem Ölkühler, Fig. 2 einen Schnitt durch einen Kühlmittelkasten mit einem Getriebeölkühler, Fig. 2a einen Querschnitt durch den Kühlmittelkasten, Fig. 3 einen Schnitt durch einen Kühlmittelkasten mit gewölbter Kastenwand, Fig. 3 einen Querschnitt durch den Kühlmittelkasten und Fig. 4 eine 3-D-Darstellung eines Kühlmittelkastens.An embodiment of the invention is shown in the drawing and will be described in more detail below. Show it 1 shows a coolant cooler with an integrated oil cooler, FIG. 2 shows a section through a coolant box with a transmission oil cooler, FIG. 2a shows a cross section through the coolant box, FIG. 3 shows a section through a coolant box with a curved box wall, FIG. 3 shows a cross section through the coolant box and FIG. 4 shows a 3-D representation of a coolant box.
Fig. 1 zeigt einen Kühlmittel/Luftkühler 1 , welcher als Querstromkühler ausgebildet und in der dargestellten Lage im Motorraum eines nicht dargestellten Kraftfahrzeuges eingebaut wird. Der Kühlmittelkühler 1 weist einen aus nicht dargestellten Rohren und Rippen bestehenden Kühlerblock 2 auf, wo- .bei die Rohre waagerecht angeordnet, uad .mit. den. Rippen zu einem .festenFig. 1 shows a coolant / air cooler 1, which is designed as a cross-flow cooler and is installed in the position shown in the engine compartment of a motor vehicle, not shown. The coolant cooler 1 has a cooler block 2 consisting of pipes and fins (not shown), the pipes being arranged horizontally, and so on. the. Ribs to a .solid
Block verlötet sind. Die Enden der Rohre sind mit Rohrböden 3, 4 verbunden, auf weiche Kühlmittelkästen 5, 6 aufgesetzt und mechanisch verbunden sind. Die Kühlmittelkästen 5, 6 sind vorzugsweise als Kunststoffspitzteile hergestellt. Der in der Zeichnung linke Kühlmittelkasten 5 weist in seinem oberen Bereich einen Kühlmitteleintrittstutzen 7 auf, während an dem in derBlock are soldered. The ends of the tubes are connected to tube sheets 3, 4, placed on soft coolant boxes 5, 6 and mechanically connected. The coolant boxes 5, 6 are preferably made as plastic tip parts. The coolant box 5 on the left in the drawing has a coolant inlet connection 7 in its upper area, while on the in the
Zeichnung rechts gelegenen Kühlmittelaustrittskasten 6 ein Austrittsstutzen 8 im unteren, jedoch nicht im untersten Bereich angeordnet ist. Mit den Kühlmittelkästen 5, 6 ist ein Ladeluftkühler 9 verbunden, der größtenteils verdeckt ist. Der Kühlmittelkühler 1 ist Teil eines nicht vollständig dargestell- ten Kühlmoduls und ist mit seinen Kühlmittelstutzen 7, 8 an einen nicht dargestellten Kühlmittelkreislauf des Verbrennungsmotors des Kraftfahrzeuges angeschlossen. Im rechten Kühlmittelkasten 6, dem Austrittskasten, ist ein nicht dargestellter Ölkühler angeordnet, welcher zwei Ölanschlüsse in Form von Ölstutzen 10, 11 aufweist, welche aus dem Kühlmittelkasten 6, d. h. aus seiner Rückwand 6a herausragen und gegenüber der Rückwand abgedichtet sind. Zu kühlendes Öl, beispielsweise Getriebeöl eines nicht dargestellten Automatikgetriebes wird dem Ölkühler über den Stutzen 10 (oder 11) zugeführt, und das gekühlte Öl wird über den Stutzen 11 (oder 0) abgezogen. Fϊg. 2 zeigt einen Schnitt durch einen Kühlmittelkasten 12, welcher eine vordere Längswand 13 und eine hintere Längswand 14 aufweist, in deren Mitte ein Kühlmittelaustrittsstutzen 15 angeordnet ist. Im Inneren des Kühl- rnittelkastens 12 ist ein Ölkühler 16 angeordnet, der beispielsweise aus nicht dargestellten Flachrohren oder Scheiben (wie im eingangs genannten Stand der Technik beschrieben) aufgebaut ist und über einen Eintrittsstutzen 17 und einen Austrittstutzen 8. im Kühlmittelkasten 12 gehalten und abgedichtet ist. Zwischen der vorderen Wand 13 und dem Ölkühler 16 ist eine vorderer Spalt 19 und zwischen der Rückwand 14 und dem Ölkühler 16 ist ein hinterer Spalt 20 angeordnet, wobei der hintere Spalt 20 deutlich größer als der vordere Spalt 19 ausgebildet ist. Dies hat zur Folge, dass der Ölkühler 16 besser vom Kühlmittel durchströmt wird und dass sich das Kühlmittel im vergrößerten Spalt 20 nach demn Austritt aus dem Ölkühler 16 besser sammeln und dem Austrittsstutzen 15 zuströmen kann.Drawing right coolant outlet box 6 an outlet 8 is arranged in the lower, but not in the lowest area. A charge air cooler 9, which is largely covered, is connected to the coolant boxes 5, 6. The coolant cooler 1 is part of a cooling module, which is not shown completely, and its coolant connections 7, 8 are connected to a coolant circuit, not shown, of the internal combustion engine of the motor vehicle. In the right coolant box 6, the outlet box, an oil cooler, not shown, is arranged, which has two oil connections in the form of oil sockets 10, 11, which protrude from the coolant box 6, ie out of its rear wall 6a and are sealed off from the rear wall. Oil to be cooled, for example gear oil of an automatic transmission, not shown, is supplied to the oil cooler via the connector 10 (or 11), and the cooled oil is drawn off via the connector 11 (or 0). Fϊg. 2 shows a section through a coolant box 12, which has a front longitudinal wall 13 and a rear longitudinal wall 14, in the middle of which a coolant outlet connection 15 is arranged. An oil cooler 16 is arranged in the interior of the coolant box 12 and is constructed, for example, from flat tubes or disks (as described in the prior art mentioned at the outset) and is held and sealed in the coolant box 12 via an inlet connection 17 and an outlet connection 8 , A front gap 19 is arranged between the front wall 13 and the oil cooler 16 and a rear gap 20 is arranged between the rear wall 14 and the oil cooler 16, the rear gap 20 being significantly larger than the front gap 19. The consequence of this is that the coolant flows through the oil cooler 16 better and that the coolant can collect better in the enlarged gap 20 after it has left the oil cooler 16 and can flow to the outlet connection 15.
Fig. 2a zeigt einen Querschnitt durch den Kühlmittelkasten 12 im Bereich des Stutzens 15, wobei der Ölkühler 16 schematisch als Rechteckquerschnitt dargestellt ist. Man sieht auch hier, dass der vordere Spalt 19 deutlich geringer als der hintere Spalt 20 ausfällt, d. h. der Ölkühler 16 ist aus der Mitte in Richtung vordere Wand 13 verschoben worden. Dadurch ergeben sich günstige Durchströmungs- und Abströmbedingungen auf der Kühlmittelseite. Der wiederum in Kunststoff ausgebildete Kühlmittelkasten 12 ist auf einen metallischen Rohrboden 21 aufgesetzt und mit diesem mechanisch verbunden. Im Rohrboden 21 ist ein Rohrende 22 eines nicht dargestellten Flachrohres aufgenommen. Wie bereits erwähnt, sind die Rohre, die Wellrippen und der Rohrboden zu einem metallischen Block verlötet. Die Luftströmungsrichtung ist durch einen Pfeil L gekennzeichnet.FIG. 2a shows a cross section through the coolant box 12 in the area of the nozzle 15, the oil cooler 16 being shown schematically as a rectangular cross section. It can also be seen here that the front gap 19 is significantly smaller than the rear gap 20, i. H. the oil cooler 16 has been moved from the center towards the front wall 13. This results in favorable flow and outflow conditions on the coolant side. The coolant box 12, which is again made of plastic, is placed on a metallic tube sheet 21 and mechanically connected to it. A tube end 22 of a flat tube, not shown, is received in the tube sheet 21. As already mentioned, the tubes, the corrugated fins and the tube sheet are soldered into a metallic block. The direction of air flow is indicated by an arrow L.
Fig. 3 zeigt eine weitere Ausführungsform eines Kühlmittelkastens 23, der ähnlich wie der Kühlmittelkasten 12 gemäß Fig. 2 ausgebildet ist, jedoch eine nach außen gewölbte Rückwand 24 aufweist, in welcher der Kühlmittelaustrittsstutzen 25 angeordnet ist. Damit ergibt sich zwischen dem Ölkühler 16 (gleich wie in Fig. 2) und der Rückwand 24 ein vergrößerter Spalt 26, wodurch die Abströmbedingengen für das Kühlmittel weiter verbessert sind. Fig. 3a zeigt den Kühlmittelkaten 23 im Schnitt im Bereich des Austrittsstutzens 25. Der Spalt 26 ist hier gegenüber dem Spalt 20 der Ausführungsform gemäß Fig. 2 bzw. 2a weiter vergrößert.FIG. 3 shows a further embodiment of a coolant box 23, which is designed similarly to the coolant box 12 according to FIG. 2, but has an outwardly curved rear wall 24, in which the coolant outlet connection 25 is arranged. This results in an enlarged gap 26 between the oil cooler 16 (same as in FIG. 2) and the rear wall 24, as a result of which the outflow conditions for the coolant are further improved. FIG. 3a shows the coolant cate 23 in section in the area of the outlet connection 25. The gap 26 here is further enlarged compared to the gap 20 of the embodiment according to FIGS. 2 and 2a.
Fig. 4 zeigt eine 3-D-Dastellung eines Kühlmittelkasten 27 mit Ölstutzen 28, 29 und zwischen diesen angeordneten Kühlmittelaustrittsstutzen 30. Man erkennt hier - wie auch bei den Ausführungsbeispielen gemäß Fig. 1 , 2 und 3 - dass praktisch die gesamte Länge der Kühlmittelkästen für die Länge des Ölkühler ausgenutzt wird, wodurch dieser kostengünstig herstellbar wird. 4 shows a 3-D representation of a coolant box 27 with oil sockets 28, 29 and coolant outlet sockets 30 arranged between them. Here, as in the exemplary embodiments according to FIGS. 1, 2 and 3, it can be seen that practically the entire length of the coolant boxes is used for the length of the oil cooler, making it inexpensive to manufacture.

Claims

P a t e n t a n s p r ü c h e Patent claims
1. Kühlmittelkühler, inbesondere für ein Kraftfahrzeug mit einem aus Rohren und Rippen bestehenden Kühlerblock (2), mit einem einen Kuhlmitteleintrittsstutzen (7) aufweisenden Kühlmitteleintrittskasten (5) und einem einen Kühlmittelaustrittsstutzen (8) aufweisenden Kühlmittelaustrittskasten (6), wobei in einem Kühlmittelkasten (6) ein Zusatz- Wärmeübertrager, insbesondere Ölkühler mit aus einem Kühlmittelkasten (6) herausgeführten Anschlüssen (10, 11) angeordnet ist, dadurch gekennzeichnet, dass ein Kühlmittelstutzen (8) zwischen zwei Anschlüssen (10, 11) des Zusatzwärmeübertragers angeordnet ist.1. coolant cooler, in particular for a motor vehicle with a cooler block (2) consisting of tubes and fins, with a coolant inlet box (5) having a coolant inlet connector (7) and a coolant outlet box (6) with a coolant outlet connector (8), wherein in a coolant box ( 6) an additional heat exchanger, in particular an oil cooler with connections (10, 11) led out of a coolant box (6), is characterized in that a coolant nozzle (8) is arranged between two connections (10, 11) of the additional heat exchanger.
2. Kühlmittelkühler nach Anspruch 1 , dadurch gekennzeichnet, dass der Kühlmittelkasten (12) eine Vorder- und eine Rückwand (13, 14) aufweist, und dass der Kühlmittelstutzen (15) und die Anschlüsse (17, 18) des Zusatzwärmeübertragers in der Rückwand (14) angeordnet sind.2. Coolant cooler according to claim 1, characterized in that the coolant box (12) has a front and a rear wall (13, 14), and that the coolant socket (15) and the connections (17, 18) of the additional heat exchanger in the rear wall ( 14) are arranged.
3. Kühlmittelkühler nach Anspruch 2, dadurch gekennzeichnet, dass zwischen dem Zusatzwärmeübertrager (16) und der Vorderwand (13) ein vorderer Spalt (19) und zwischen Zusatzwärmeübertrager (16) und Rückwand (14) ein hinterer Spalt (20) angeordnet sind und dass der hintere Spalt (20) größer als der vordere Spalt (19) ausgebildet ist.3. Coolant cooler according to claim 2, characterized in that between the additional heat exchanger (16) and the front wall (13) a front gap (19) and between the additional heat exchanger (16) and rear wall (14) a rear gap (20) are arranged and that the rear gap (20) is larger than the front gap (19).
4. Kühlmittelkühler nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die Rückwand (14) im Wesentlichen eben ausgebildet ist. 4. Coolant cooler according to claim 2 or 3, characterized in that the rear wall (14) is substantially planar.
5. Kühlmittelkühler nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass die Rückwand (24) im Bereich um den Kühlmittelstutzen (25) nach außen gewölbt ist.5. Coolant cooler according to claim 2 or 3, characterized in that the rear wall (24) in the area around the coolant nozzle (25) is curved outwards.
6. Kühlmittelkühler nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Austrittsstutzen (15, 25, 30) etwa in der Mitte zwischen den Anschlüssen (17, 18; 28, 29) des Zusatzwärmeübertragers angeordnet ist.6. Coolant cooler according to one of claims 1 to 5, characterized in that the outlet connection (15, 25, 30) is arranged approximately in the middle between the connections (17, 18; 28, 29) of the additional heat exchanger.
7. Kühlmittelkühler nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Kühlmittelkästen (6, 12, 23, 27) als Kunst- stoffspritzteile ausgebildet sind.7. Coolant cooler according to one of claims 1 to 6, characterized in that the coolant boxes (6, 12, 23, 27) are designed as plastic injection molded parts.
8. Kühlmittelkühler nach einem der Ansprüche 1 bis 7, dadurch ge- kennzeichnet, dass der Zusatzwärmeübertrager (.16) als Scheiben- , Flachrohr- oder Platten-Kühler ausgebildet ist. 8. Coolant cooler according to one of claims 1 to 7, characterized in that the additional heat exchanger (.16) is designed as a disc, flat tube or plate cooler.
EP04765111A 2003-10-16 2004-09-13 Coolant radiator for a motor vehicle Withdrawn EP1676087A1 (en)

Applications Claiming Priority (2)

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DE10348699A DE10348699A1 (en) 2003-10-16 2003-10-16 Coolant radiator of a motor vehicle
PCT/EP2004/010189 WO2005038381A1 (en) 2003-10-16 2004-09-13 Coolant radiator for a motor vehicle

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US (1) US7500514B2 (en)
EP (1) EP1676087A1 (en)
BR (1) BRPI0415394A (en)
DE (1) DE10348699A1 (en)
WO (1) WO2005038381A1 (en)
ZA (1) ZA200602980B (en)

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US20070131397A1 (en) 2007-06-14
US7500514B2 (en) 2009-03-10
ZA200602980B (en) 2007-10-31
WO2005038381A1 (en) 2005-04-28
BRPI0415394A (en) 2006-12-12
DE10348699A1 (en) 2005-05-12

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