EP1094288B1 - Cooling system - Google Patents

Cooling system Download PDF

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Publication number
EP1094288B1
EP1094288B1 EP00119521A EP00119521A EP1094288B1 EP 1094288 B1 EP1094288 B1 EP 1094288B1 EP 00119521 A EP00119521 A EP 00119521A EP 00119521 A EP00119521 A EP 00119521A EP 1094288 B1 EP1094288 B1 EP 1094288B1
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EP
European Patent Office
Prior art keywords
cooling system
junction plates
openings
rear wall
opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00119521A
Other languages
German (de)
French (fr)
Other versions
EP1094288A3 (en
EP1094288A2 (en
Inventor
Werner Zobel
Michael Ehlers
Frank Vetter
Jörg Soldner
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Modine Manufacturing Co
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Modine Manufacturing Co
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Filing date
Publication date
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Publication of EP1094288A3 publication Critical patent/EP1094288A3/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • F28F9/002—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core with fastening means for other structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • 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
    • F28D1/0408—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids
    • F28D1/0426—Multi-circuit heat exchangers, e.g. integrating different heat exchange sections in the same unit or heat exchangers for more than two fluids with units having particular arrangement relative to the large body of fluid, e.g. with interleaved units or with adjacent heat exchange units in common air flow or with units extending at an angle to each other or with units arranged around a central element
    • 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
    • F01P3/00—Liquid cooling
    • F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
    • F01P2003/182—Arrangements or mounting of liquid-to-air heat-exchangers with multiple heat-exchangers
    • 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
    • F01P3/00—Liquid cooling
    • F01P3/18—Arrangements or mounting of liquid-to-air heat-exchangers
    • F01P2003/185—Arrangements or mounting of liquid-to-air heat-exchangers arranged in parallel
    • 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
    • F01P2070/00—Details
    • F01P2070/50—Details mounting fans to heat-exchangers
    • 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
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • 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
    • F01P5/00—Pumping cooling-air or liquid coolants
    • F01P5/02—Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
    • F01P5/04—Pump-driving arrangements
    • F01P5/043—Pump reversing arrangements
    • 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
    • F28D2021/0082—Charged air 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 rear wall has outgoing from the center struts, which lead to arranged in the corners of the cooling system gusset plates, that at least two openings in each gullet for opening a medium to be cooled by at least one cooler is arranged and that in the gusset plates Means for releasably securing the rear wall are arranged on the end faces of the header boxes of the radiator.
  • flow channels are provided which communicate with the openings and which have the inlet and outlet for the medium to be cooled.
  • the inlet and outlet could also be connected directly to the openings.
  • the flow channels are preferably attached directly to the rear wall. Covers are arranged between the struts.
  • the impeller is located far in front of the cooling system and the retracted rear wall is adapted to the front position of the impeller, whereby a very compact design is possible because in the retracted space, which is larger due to the front position of the impeller than in State of the art, drive elements of the radial impeller are arranged.
  • the rear wall is the main element of the cooling system. Therefore, it has outgoing from the bearing of the impeller struts to the gusset plates, which are located in the corners of the cooling system.
  • a particularly compact design results from the fact that openings are provided in these gusset plates, through which a medium to be cooled, for example, the coolant of a truck, in a cooler or can escape. This eliminates, for example, expansive, individual, lateral connections for the radiator.
  • the openings are preferably connected by means of flow channels, which are located directly on the rear wall. If desired, the flow channels can form part of the rear wall and thus assume stability and sealing functions, because it is essential that the rear wall (as well as the front wall) to prevent Abströmbaten the cooling system seals to the outside.
  • the cooling system 1 of the embodiment is intended for large trucks.
  • Fig. 1 shows the cooling system 1, consisting of an upper intercooler 2, two lateral and a lower radiator 3, 4, 5, which are all provided as cooling liquid cooler in these embodiments.
  • the rear wall 13 has been drawn in Fig. 1 without cover plates between the struts 25, which is why the view into the interior is free. Because the coolers 3, 4, 5 are all cooling liquid coolers, the flow channels 21 connect the three coolers 3, 4, 5.
  • cooling liquid cooler a condenser for the air conditioner and an oil cooler or the like could belong to the cooling system, so that in this case the flow channels 21 would be arranged differently than shown or can be omitted entirely as needed.
  • the flow channels 21 have an inlet 22 for the cooling liquid and an outlet 23.
  • the upper in Fig. 1 flow channel 21 connects the cooling liquid cooler 3 and 5 and distributes the cooling liquid to be cooled through the openings 20 in the gussets 16 and 18 to the radiator 3 and 5 and their collecting boxes 40. (See also FIG. 2, which shows a perspective view of the rear wall 13 from the front, in which parts of the flow channels 21 can be seen in the plane behind the rear wall 13.)
  • the lower flow channel 21 corresponds via each one of the two openings 20 in the junction plates 17 and 19 with the manifolds 50 of the cooling liquid cooler 3, 5 and goes to the outlet 23.
  • a vertical flow channel 21 extends through the second opening 20 in the gusset plate 19 for Not shown collecting box of the lower radiator 4 leads to the radiator 4 with thedeminutek to be cooled to supply.
  • Figs. 1 and 2 are arrows drawn, which illustrate the distribution of the cooling liquid on the radiator 3, 4 and 5.
  • the arrows have been identified by the reference numerals of the associated radiator 3, 4 and 5.
  • the flow channels 21 are attached to the rear wall 13 and constitute an additional stiffening element.
  • brackets 9 have been mounted to support the cooling system 1 in the truck.
  • an adapter plate 24 In the middle of the rear wall 13 is an adapter plate 24 for receiving the bearing 14 of the radial impeller 15th
  • FIG. 4 shows how the cooler 2 - 5 of the cooling system 1 are joined together.
  • An end face 31 of the headers 40, 50 of the radiator 2 - 5 is equipped with a respective flange 15.
  • the flange 15 has a triangular-shaped opening 30 through which the cooling liquid can enter the radiator 5 at the top and exit again below, because the opening 30 in the upper flange 15 with an opening 20 in the gusset plate 18 and the opening 30 in the lower flange 15th coincides with the opening 20 in the gusset plate 19.
  • the openings 20, 30 are via the flow channels 21 with the inlet 22 and the outlet 23 in connection. It is understood that suitable seals are used.
  • each flange 15 three further openings 32 are provided which serve the attachment to the gusset plates 18 and 19 and that by means of the local openings 6 and 7 and screws 8.
  • the openings 7 in the gusset plates 17, 19 are formed as elongated holes, whereas the openings 6 are round. This training allows the caused by the constant temperature change expansion or contraction within the cooler.
  • the radiator 2-5 are equipped with opposite tube plates 33.
  • the tube plates 33 are rows of slot-like openings 34.
  • the ends of the flat tubes are fixed, which connect the two header boxes 40 and 50 through which, for example, the cooling liquid or, in the case of the radiator 2, the charge air flows through.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Other Air-Conditioning Systems (AREA)
  • Liquid Crystal Substances (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Four condenser units (2,3,4,5) are arranged as a box around the fan cavity with coolant connections to ducts (21) with inlet (22) and outlet (23) openings attached to a backplate assembly having an open aperture for air intake. The fan motor is mounted on struts (25).

Description

Die Erfindung betrifft eine Kühlanlage mit mehreren, zwei Sammelkästen aufweisende, einzelnen Kühlem, die kastenförmig angeordnet sind und die ein Radiallaufrad innerhalb der kastenförmigen Anordnung besitzt, das Frischluft über eine Ansaugöffnung in der Frontwand ansaugt und als Kühlluft durch die Kühler der kastenförmigen Anordnung hindurchbläst, wobei die Kühlanlage eine nach innen eingezogene Rückwand aufweist, die das Lager des Radiallaufrades trägt. So eine Kühlanlage ist aus der DE 19713712 CI bekant.The invention relates to a cooling system comprising a plurality, comprising two collecting boxes, individual coolers, which are arranged in a box shape and having a radial impeller within the box-shaped arrangement, the fresh air via a suction port in the front wall sucks and blows as cooling air through the radiator of the box-shaped arrangement, wherein the cooling system has an inwardly retracted rear wall which carries the bearing of the radial impeller. Such a cooling system is known from DE 19713712 CI bekant.

Diese Kühlanlage ist auch EP-A-1045217 (Stand der Technik nach Art. 5413) e+ (4) EP¨U) beschrieben worden. Dort wird bereits eine kompakte sowie leistungsmäßig optimierte Kühlanlage angestrebt. Die Kompaktheit wird vor allem dadurch erreicht, daß die Rückwand nach innen eingezogen und der dadurch gewonnene Bauraum zur Anordnung von Antriebselementen nutzbar gemacht worden ist. Außerdem stellt die DE 197 24 728 A1 eine Veröffentlichung dar, in der ebenfalls Kühlanlagen beschrieben sind.This refrigeration system has also been described in EP-A-1045217 (prior art under Art. 5413) e + (4) EP¨U). A compact and optimized cooling system is already being sought there. The compactness is achieved mainly by the fact that the rear wall retracted inward and the resulting space for the arrangement of drive elements has been made usable. In addition, DE 197 24 728 A1 is a publication in which cooling systems are also described.

Weitere Kühlanlagen mit ähnlichen Merkmalen sind aus US 4 202 296 und DE 31 48 942 C2 bekannt. Sie beziehen sich jedoch nicht auf kastenförmige Anordnungen mit mehreren einzelnen Kühlern sondern auf sogenannte Ringkühler, die fertigungstechnisch aufwendiger herstellbar sind und sich deshalb bisher nicht durchsetzen konnten. Der Ringkühler gemäß US dient als Wasserkühler für ein Fahrzeug, wogegen der Ringkühler aus der DE auch als Kondensator für die Klimaanlage des Fahrzeuges eingesetzt werden kann.Further cooling systems with similar features are known from US 4,202,296 and DE 31 48 942 C2. However, they do not relate to box-shaped arrangements with a plurality of individual coolers but to so-called ring coolers, which are more expensive to manufacture and therefore could not prevail. The ring cooler according to US serves as a water cooler for a vehicle, whereas the ring cooler from DE can also be used as a condenser for the vehicle's air conditioning system.

Ein weiterer aus DE-AS- 27 16 997 bekannter Ringkühler ist zur Kühlung mehrerer unterschiedlicher Medien ausgelegt worden, wodurch der fertigungstechnische Aufwand noch weiter ansteigt.Another known from DE-AS 27 16 997 ring cooler has been designed for cooling a plurality of different media, whereby the manufacturing cost increases even further.

Insbesondere wenn Kühlanlagen für große Lastkraftwagen projektiert werden, muß das Radiallaufrad beträchtliche Abmessung aufweisen, um den benötigten Volumenstrom zur Verfügung stellen zu können. Das bedeutet, daß das Laufrad auch ein wesentliches Gewicht besitzt und im Betrieb enorme Kräfte erzeugt, die sicher aufgenommen werden müssen. In der genannten unveröffentlichten Anmeldung Nr. 99107601.9 wurde zwar schon darauf hingewiesen, daß die Rückwand Stabilitätseigenschaften aufweisen muß, jedoch ohne aufzuzeigen, wie das errreicht werden kann.In particular, when cooling systems are designed for large trucks, the radial impeller must have considerable size in order to provide the required volume flow can. This means that the impeller also has a significant weight and generates enormous forces during operation, which must be safely absorbed. Although in the aforementioned unpublished application no. 99107601.9 has already been noted that the back wall must have stability properties, but without showing how this can be achieved.

Die Aufgabe der Erfindung besteht darin, die Kühlanlage aus dem Oberbegriff mit einer Rückwand auszustatten, die auch die Kräfte eines großes Radiallaufrades sicher aufnehmen kann und die außerdem eine kompakte Bauweise der Kühlanlage ermöglicht.The object of the invention is to equip the cooling system of the preamble with a rear wall, which also includes the forces of a large radial impeller can safely accommodate and also allows a compact design of the cooling system.

Erfindungsgemäß ist vorgesehen, daß die Rückwand vom Zentrum ausgehende Streben aufweist, die zu in den Ecken der Kühlanlage angeordneten Knotenblechen führen, daß in mindestens zwei Knotenblechen mindestens je eine Öffnung zum Durchführen eines zu kühlenden Mediums durch mindestens einen Kühler angeordnet ist und daß in den Knotenblechen Mittel zur lösbaren Befestigung der Rückwand an den Stirnseiten der Sammelkästen der Kühler angeordnet sind.According to the invention it is provided that the rear wall has outgoing from the center struts, which lead to arranged in the corners of the cooling system gusset plates, that at least two openings in each gullet for opening a medium to be cooled by at least one cooler is arranged and that in the gusset plates Means for releasably securing the rear wall are arranged on the end faces of the header boxes of the radiator.

Vorzugsweise sind Strömungskanäle vorgesehen, die mit den Öffnungen kommunizieren und die den Ein-und Austritt für das zu kühlende Medium aufweisen. Selbstverständlich könnte der Ein-und Austritt auch direkt an den Öffnungen angeschlossen sein. Die Strömungskanäle sind vorzugsweise direkt an der Rückwand befestigt. Zwischen den Streben sind Abdeckungen angeordnet.Preferably, flow channels are provided which communicate with the openings and which have the inlet and outlet for the medium to be cooled. Of course, the inlet and outlet could also be connected directly to the openings. The flow channels are preferably attached directly to the rear wall. Covers are arranged between the struts.

Die Rückwand ist zum Zentrum hin in das Innere der kastenförmigen Kühleranordnung eingezogen. Weiterbildungen ergeben sich aus den anderen Unteransprüchen.The rear wall is drawn towards the center in the interior of the box-shaped radiator assembly. Further developments will become apparent from the other dependent claims.

Das Laufrad ist weit vorne innerhalb der Kühlanlage angeordnet und die eingezogene Rückwand ist an die Vorne-Position des Laufrades angepaßt, wodurch auch eine sehr kompakte Bauweise möglich wird, denn in dem eingezogenen Raum, der aufgrund der Vorne-Position des Laufrades größer ist als im Stand der Technik, sind Antriebselemente des Radiallaufrades angeordnet.The impeller is located far in front of the cooling system and the retracted rear wall is adapted to the front position of the impeller, whereby a very compact design is possible because in the retracted space, which is larger due to the front position of the impeller than in State of the art, drive elements of the radial impeller are arranged.

Die Rückwand ist das tragende Element der Kühlanlage. Sie weist deshalb vom Lager des Laufrades ausgehende Streben zu den Knotenblechen auf, die sich in den Ecken der Kühlanlage befinden. Eine besonders kompakte Ausbildung ergibt sich dadurch, daß in diesen Knotenblechen Öffnungen vorgesehen sind, durch die ein zu kühlendes Medium, beispielsweise die Kühlflüssigkeit eines Lastkraftwagens, in einen Kühler ein-oder austreten kann. Dadurch entfallen beispielsweise raumgreifende, einzelne, seitliche Anschlüsse für die Kühler. Die Öffnungen sind vorzugsweise mittels Strömungskanälen verbunden, die sich unmittelbar an der Rückwand befinden. Wenn gewünscht, können die Strömungskanäle einen Teil der Rückwand bilden und damit Stabilitäts-und Dichtfunktionen übernehmen, denn es ist wesentlich, daß die Rückwand (wie auch die Frontwand) zur Vermeidung von Abströmverlusten die Kühlanlage nach außen abdichtet.The rear wall is the main element of the cooling system. Therefore, it has outgoing from the bearing of the impeller struts to the gusset plates, which are located in the corners of the cooling system. A particularly compact design results from the fact that openings are provided in these gusset plates, through which a medium to be cooled, for example, the coolant of a truck, in a cooler or can escape. This eliminates, for example, expansive, individual, lateral connections for the radiator. The openings are preferably connected by means of flow channels, which are located directly on the rear wall. If desired, the flow channels can form part of the rear wall and thus assume stability and sealing functions, because it is essential that the rear wall (as well as the front wall) to prevent Abströmverlusten the cooling system seals to the outside.

Die Rückwand, bestehend aus den Knotenblechen mit Streben und Zentrum, kann beispielsweise ein kostenmäßig günstig herzustellendes gießtechnisches Teil sein. Die zwischen den Streben vorgesehenen Abdeckungen können Einzelteile sein. Weitere Merkmale und vorteilhafte Wirkungen ergeben sich aus der folgenden Beschreibung der Erfindung anhand von Ausführungsbeispielen. Die beiliegenden Figuren zeigen:

  • Fig. 1 ist eine Perspektivansicht auf die Kühlanlage von hinten.
  • Fig. 2 ist eine Perspektivansicht auf die Rückwand.
  • Fig. 3 ist ein Querschnitt durch die Kühlanlage.
  • Fig. 4 zeigt eine perspektivische Ansicht eines Kühlers der Kühlanlage.
The rear wall, consisting of the gusset plates with struts and center, for example, be a low cost to produce casting technical part. The covers provided between the struts may be individual parts. Further features and advantageous effects will become apparent from the following description of the invention with reference to embodiments. The enclosed figures show:
  • Fig. 1 is a perspective view of the cooling system from behind.
  • Fig. 2 is a perspective view of the rear wall.
  • Fig. 3 is a cross section through the refrigeration system.
  • Fig. 4 shows a perspective view of a radiator of the cooling system.

Die Kühlanlage 1 des Ausführungsbeispieles ist für große Lastkraftwagen vorgesehen. Die Fig. 1 zeigt die Kühlanlage 1, bestehend aus einem oberen Ladeluftkühler 2, zwei seitlichen und einem unteren Kühler 3, 4, 5, die in diesen Ausführungsbeispielen alle als Kühlflüssigkeitskühler vorgesehen sind. Die Rückwand 13 wurde in Fig. 1 ohne Abdeckplatten zwischen den Streben 25 gezeichnet, weshalb der Blick in das Innere frei ist. Weil die Kühler 3, 4, 5 alle Kühlflüssigkeitskühler sind, verbinden die Strömungskanäle 21 die drei Kühler 3, 4, 5.The cooling system 1 of the embodiment is intended for large trucks. Fig. 1 shows the cooling system 1, consisting of an upper intercooler 2, two lateral and a lower radiator 3, 4, 5, which are all provided as cooling liquid cooler in these embodiments. The rear wall 13 has been drawn in Fig. 1 without cover plates between the struts 25, which is why the view into the interior is free. Because the coolers 3, 4, 5 are all cooling liquid coolers, the flow channels 21 connect the three coolers 3, 4, 5.

Es versteht sich, daß genausogut lediglich ein Kühlflüssigkeitskühler, ein Kondensator für die Klimaanlage und ein Ölkühler oder dergleichen zur Kühlanlage gehören könnten, so daß für diesen Fall die Strömungskanäle 21 anders als gezeigt anzuordnen wären bzw. je nach Bedarf auch gänzlich entfallen können.It is understood that just as a cooling liquid cooler, a condenser for the air conditioner and an oil cooler or the like could belong to the cooling system, so that in this case the flow channels 21 would be arranged differently than shown or can be omitted entirely as needed.

Die Strömungskanäle 21 besitzen einen Eintritt 22 für die Kühlflüssigkeit und einen Austritt 23. Der in Fig. 1 obere Strömungskanal 21 verbindet die Kühlflüssigkeitskühler 3 und 5 und verteilt die zu kühlende Kühlflüssigkeit über die Öffnungen 20 in den Knotenblechen 16 und 18 auf die Kühler 3 und 5 bzw. deren Sammelkästen 40. (Siehe dazu auch Fig. 2, die eine perspektivische Ansicht von vorne auf die Rückwand 13 zeigt, in der Teile der Strömungskanäle 21 in der Ebene hinter der Rückwand 13 zu erkennen sind.) Der untere Strömungskanal 21 korrespondiert über je eine der zwei Öffnungen 20 in den Knotenblechen 17 und 19 mit den Sammelkästen 50 der Kühlflüssigkeitskühler 3, 5 und geht zum Austritt 23. Vom oberen horizontalen Strömungskanal 21 erstreckt sich ein vertikaler Strömungskanal 21, der über die zweite Öffnung 20 im Knotenblech 19 zum nicht gezeigten Sammelkasten des unteren Kühlers 4 führt, um auch den Kühler 4 mit der zu kühlenden Kühlflüssigkeit zu versorgen. In den Fig. 1 und 2 sind Pfeile eingezeichnet, die die Verteilung der Kühlflüssigkeit auf die Kühler 3, 4 und 5 verdeutlichen. In Fig. 2 sind die Pfeile mit den Bezugszeichen der zugehörigen Kühler 3, 4 und 5 gekennzeichnet worden.The flow channels 21 have an inlet 22 for the cooling liquid and an outlet 23. The upper in Fig. 1 flow channel 21 connects the cooling liquid cooler 3 and 5 and distributes the cooling liquid to be cooled through the openings 20 in the gussets 16 and 18 to the radiator 3 and 5 and their collecting boxes 40. (See also FIG. 2, which shows a perspective view of the rear wall 13 from the front, in which parts of the flow channels 21 can be seen in the plane behind the rear wall 13.) The lower flow channel 21 corresponds via each one of the two openings 20 in the junction plates 17 and 19 with the manifolds 50 of the cooling liquid cooler 3, 5 and goes to the outlet 23. From the upper horizontal flow channel 21, a vertical flow channel 21 extends through the second opening 20 in the gusset plate 19 for Not shown collecting box of the lower radiator 4 leads to the radiator 4 with the Kühlflüssigk to be cooled to supply. In Figs. 1 and 2 are arrows drawn, which illustrate the distribution of the cooling liquid on the radiator 3, 4 and 5. In Fig. 2, the arrows have been identified by the reference numerals of the associated radiator 3, 4 and 5.

Die Ausführung der strömungstechnischen Verbindung der Strömungskanäle 21 über die Öffnungen 20 zu den Stirnseiten der Sammelkästen 26 und 27 ist im Detail nicht gezeigt. Der Fachmann hat dafür jedoch genügend Varianten parat. Die Öffnungen 20 sind etwa dreieckförmig, weil auch die Sammelkästen 40, 50 etwa dreieckförmigen Querschnitt aufweisen. Das ist in der bereits genannten europäischen Patentanmeldung Nr. 9910760.9 gezeigt und beschrieben worden, weshalb ausdrücklich darauf hingewiesen wird, daß hier nicht deutlich gezeigte Merkmale aus dieser Veröffentlichung entnommen werden sollen.
(siehe auch Fig. 4 und Beschreibung, unten)The execution of the fluidic connection of the flow channels 21 through the openings 20 to the end faces of the manifolds 26 and 27 is not shown in detail. However, the expert has enough variants for it. The openings 20 are approximately triangular, because the collecting boxes 40, 50 have approximately triangular cross-section. This has been shown and described in the already mentioned European patent application no. 9910760.9, which is why it is expressly pointed out that features not clearly shown here are to be taken from this publication.
(see also Fig. 4 and description, below)

Die Strömungskanäle 21 sind an der Rückwand 13 befestigt und stellen ein zusätzliches Versteifungselement dar. Außerdem sind beidseitig der Rückwand 13 Halterungen 9 zu Abstützung der Kühlanlage 1 im Lastkraftwagen angebracht worden. In der Mitte der Rückwand 13 befindet sich eine Adapterplatte 24 zur Aufnahme des Lagers 14 des Radiallaufrades 15.The flow channels 21 are attached to the rear wall 13 and constitute an additional stiffening element. In addition, on both sides of the rear wall 13 brackets 9 have been mounted to support the cooling system 1 in the truck. In the middle of the rear wall 13 is an adapter plate 24 for receiving the bearing 14 of the radial impeller 15th

Aus der Fig. 3 ist zu erkennen, daß die Rückwand 13 eingezogen ist. Das Laufrad 15 befindet sich in einer vorderen Position innerhalb der Kühlanlage, die sich als optimal hinsichtlich der Kühlleistung erwiesen hat.From Fig. 3 it can be seen that the rear wall 13 is retracted. The impeller 15 is in a forward position within the refrigeration system, which has proven to be optimal in terms of cooling capacity.

Aus Fig. 4 geht hervor, wie die Kühler 2 - 5 der Kühlanlage 1 zusammengefügt werden. Eine Stirnseite 31 der Sammelkästen 40, 50 der Kühler 2 - 5 ist mit je einem Flansch 15 ausgerüstet. Der Flansch 15 hat eine dreieckförmige Öffnung 30, durch die die Kühlflüssigkeit in den Kühler 5 oben eintreten und unten wieder austreten kann, weil die Öffnung 30 in dem oberen Flansch 15 mit einer Öffnung 20 im Knotenblech 18 und die Öffnung 30 in dem unteren Flansch 15 mit der Öffnung 20 im Knotenblech 19 übereinstimmt. Die Öffnungen 20, 30 sind über die Strömungskanäle 21 mit dem Eintritt 22 und dem Austritt 23 in Verbindung. Es versteht sich, daß geeignete Dichtungen verwendet werden. In jedem Flansch 15 sind drei weitere Öffnungen 32 vorgesehen, die der Befestigung an den Knotenblechen 18 und 19 und zwar mittels der dortigen Öffnungen 6 und 7 und Schrauben 8 dienen. Die Öffnungen 7 in den Knotenblechen 17, 19 sind als Langlöcher ausgebildet, wohingegen die Öffnungen 6 rund sind. Diese Ausbildung gestattet die durch den ständigen Temperaturwechsel hervorgerufene Ausdehnung bzw. Kontraktion innerhalb der Kühler. Aus der Fig. 4 ist ferner zu erkennen, daß die Kühler 2-5 mit gegenüberliegenden Rohrböden 33 ausgerüstet sind. In den Rohrböden 33 befinden sich Reihen von schlitzartigen Öffnungen 34. In diesen Öffnungen 34 sind die Enden der Flachrohre befestigt, die die beiden Sammelkästen 40 und 50 verbinden, durch die beispielsweise die Kühlflüssigkeit oder, im Falle des Kühlers 2, die Ladeluft hindurchströmt.From Fig. 4 shows how the cooler 2 - 5 of the cooling system 1 are joined together. An end face 31 of the headers 40, 50 of the radiator 2 - 5 is equipped with a respective flange 15. The flange 15 has a triangular-shaped opening 30 through which the cooling liquid can enter the radiator 5 at the top and exit again below, because the opening 30 in the upper flange 15 with an opening 20 in the gusset plate 18 and the opening 30 in the lower flange 15th coincides with the opening 20 in the gusset plate 19. The openings 20, 30 are via the flow channels 21 with the inlet 22 and the outlet 23 in connection. It is understood that suitable seals are used. In each flange 15, three further openings 32 are provided which serve the attachment to the gusset plates 18 and 19 and that by means of the local openings 6 and 7 and screws 8. The openings 7 in the gusset plates 17, 19 are formed as elongated holes, whereas the openings 6 are round. This training allows the caused by the constant temperature change expansion or contraction within the cooler. From Fig. 4 it can also be seen that the radiator 2-5 are equipped with opposite tube plates 33. In the tube plates 33 are rows of slot-like openings 34. In these openings 34, the ends of the flat tubes are fixed, which connect the two header boxes 40 and 50 through which, for example, the cooling liquid or, in the case of the radiator 2, the charge air flows through.

Claims (10)

  1. Cooling system (1) having a plurality of individual radiators (2, 3, 4, 5) which have two collecting vessels (40, 50), are arranged in a box shape and have a radial rotor (15) within the box-shaped arrangement, which radial rotor (15) sucks in fresh air via an induction opening (11) in the front wall (12) and blows it as cooling air through the radiators (2, 3, 4, 5) of the box-shaped arrangement, the cooling system (1) having a rear wall (13) which is drawn in towards the centre and supports the bearing (14) of the radial rotor (15), characterized in that the rear wall (13) has struts (25) which start from the centre and lead to junction plates (16-19) which are arranged in the corners of the cooling system (1), in that in each case at least one opening (20) is arranged in at least two of the junction plates (16-19) for passing a medium which is to be cooled through at least one radiator (3, 4 or 5), and in that means for the releasable fastening (6, 7, 8) of the rear wall (13) to the collecting vessels (40, 50) of the radiators (2, 3, 4, 5) are arranged in the junction plates (16-19).
  2. Cooling system according to Claim 1, characterized in that flow channels (21) are provided which communicate with the openings (20) and have the inlet and outlet (22, 23) for the medium which is to be cooled.
  3. Cooling system according to Claims 1 and 2, characterized in that the radiators (3, 4, 5) serve to cool a single cooling fluid and are connected on the inlet and outlet side by means of the flow channels (21) via the openings (20) in the junction plates (16-19), the junction plates (16 and 18) having in each case one opening (20) for entry into the respective radiator (3 and 5) and the other junction plates (17 and 19) having in each case two openings (20), of which one opening (20) serves as the outlet from the corresponding radiator (3 or 5) and the other opening (20) serves as the inlet or the outlet of the other radiator (4).
  4. Cooling system according to Claims 1 and 2, characterized in that the radiators (3 to 5) are provided for cooling various media, for example oil, cooling fluid and refrigerant, and the flow channels (21) and the openings (20) are configured such that they are adapted thereto.
  5. Cooling system according to one of Claims 1 to 4, characterized in that the bearing (14) of the radial rotor (15) is fastened in the centre of the rear wall (13) to an adapter plate (24) which is connected to the struts (25) which lead to the junction plates (16-19), and in that covers are arranged between the struts (25).
  6. Cooling system according to Claim 2, characterized in that the flow channels (21) are fastened directly to the rear wall (13).
  7. Cooling system according to one of the preceding claims, characterized in that in each case one end side (31) of the collecting vessels (40, 50) of the radiators (2-5) is equipped with a flange (15), in which an opening (30) which corresponds with the opening (20) in the junction plates (16-19) is situated, as well as further openings (32) which serve for fastening purposes together with other openings (6, 7) in the junction plates (16-19) and with screws (8).
  8. Cooling system according to Claims 1 and 7, characterized in that the openings (6) in the junction plates are circular and the other openings (7) in the junction plates are slots, in order to give the radiators (3-5) degrees of freedom for movements which are caused by temperature fluctuations.
  9. Cooling system according to one of the preceding claims, characterized in that the centre, the struts (25) and the junction plates (16-19) of the rear wall (13) are one part which is manufactured using casting technology.
  10. Cooling system according to Claim 1, characterized in that the means for fastening the junction plates (16-19) to the collecting vessels (40, 50) are configured at least partially as positive locking parts which can be engaged or pushed into one another.
EP00119521A 1999-10-21 2000-09-07 Cooling system Expired - Lifetime EP1094288B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19950753 1999-10-21
DE19950753A DE19950753A1 (en) 1999-10-21 1999-10-21 Cooling system I

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EP1094288A2 EP1094288A2 (en) 2001-04-25
EP1094288A3 EP1094288A3 (en) 2003-09-03
EP1094288B1 true EP1094288B1 (en) 2006-08-02

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AT (1) ATE335182T1 (en)
DE (2) DE19950753A1 (en)

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Publication number Publication date
DE19950753A1 (en) 2001-04-26
EP1094288A3 (en) 2003-09-03
US6886624B2 (en) 2005-05-03
ATE335182T1 (en) 2006-08-15
DE50013260D1 (en) 2006-09-14
US6564857B1 (en) 2003-05-20
EP1094288A2 (en) 2001-04-25
US20030141037A1 (en) 2003-07-31

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