WO2013124096A1 - Heat exchanger - Google Patents

Heat exchanger Download PDF

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Publication number
WO2013124096A1
WO2013124096A1 PCT/EP2013/050841 EP2013050841W WO2013124096A1 WO 2013124096 A1 WO2013124096 A1 WO 2013124096A1 EP 2013050841 W EP2013050841 W EP 2013050841W WO 2013124096 A1 WO2013124096 A1 WO 2013124096A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat exchanger
cooling
coolant
air
cooling fins
Prior art date
Application number
PCT/EP2013/050841
Other languages
German (de)
French (fr)
Inventor
Stephan Stumpf
Original Assignee
Bayerische Motoren Werke Aktiengesellschaft
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 Bayerische Motoren Werke Aktiengesellschaft filed Critical Bayerische Motoren Werke Aktiengesellschaft
Priority to EP13700336.4A priority Critical patent/EP2817578A1/en
Publication of WO2013124096A1 publication Critical patent/WO2013124096A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—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
    • F28D1/05366—Assemblies of conduits connected to common headers, e.g. core type radiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/0233—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with air flow channels
    • F28D1/024—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with air flow channels with an air driving element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/126—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element consisting of zig-zag shaped fins
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00—Fins
    • F28F2215/04—Assemblies of fins having different features, e.g. with different fin densities

Definitions

  • the invention relates to a heat exchanger with the features of the preamble of patent claim 1.
  • Previously known air-medium heat exchangers in particular coolant radiators, are equipped according to applicable industry standards with a uniform rib density at the air lamella.
  • An example of this is known from German published patent application DE 10 2006 018 217 A1, from which the present invention is based.
  • a heat exchanger for a motor vehicle is known, which is integrated in a circuit, with two manifolds, a soldered cooling network consisting of flat tubes and cooling fins.
  • the flat tubes connect the two header boxes fluidically and with a one or both sides of the cooling network arranged pipe as a side part, which is connected to the adjacent fin by means of soldering.
  • the flat tubes are made from an endless tube.
  • the production of the heat exchanger is significantly simplified if it is provided that the pipe serving as a side part is not flowed through and comes either from the same or from another endless tube, such as the flat tubes. As can be clearly seen in particular from FIG. 6, the cooling fins all have the same spacing.
  • Object of the present invention is therefore to show a measure with the o. G. Disadvantages are avoided.
  • the invention therefore proposes the construction of heat exchangers with variable cooling fin densities, adapted to the specific individual case. Due to the inventive design results in a targeted influence of inflow or flow conditions of heat exchangers or more interconnected heat exchangers and thus an increase in efficiency in the corresponding operating points. Advantageously, an optimal adaptation of multi-flow heat exchangers, z. As climate capacitors with subcooling, achieved at the special installation.
  • thermally highly conductive strip material is either folded or corrugated or rolled.
  • cooling fins can also be represented as single ribs.
  • the embodiment of the invention allows an optimal adaptation of the heat exchanger to an arrangement according to the claims 3 and 4.
  • Fig. 1 shows schematically a plan view of an inventive
  • FIG. 2 shows schematically a plan view of the cooling fins for a heat exchanger according to the invention.
  • Fig. 3 shows a specific embodiment of the invention
  • the heat exchanger 1 shows schematically a plan view of a heat exchanger 1 according to the invention.
  • the heat exchanger 1 is particularly suitable for a coolant circuit of an internal combustion engine.
  • the heat exchanger 1 has a coolant inlet 2 designed as a hose nozzle, which opens into cooling pipes 3, 3 'oriented largely flat in parallel with one another.
  • the coolant flows into the coolant outlet 4, which is opposite to the coolant inlet 2 and which is likewise designed as a hose nozzle.
  • the cooling tubes 3, 3 ' define an air flow area through the plane which they span.
  • Between the cooling tubes 3, 3 'cooling fins 5, 5' are arranged, which are aligned for the lowest possible flow resistance largely in the direction of a heat exchanger 1 flowing through the cooling air.
  • a network matrix 8 shown hatched is also provided, which does not completely cover the air flow area in the illustration.
  • the cooling fins 5, 5 ' at least in a first part of the Lucas micungs Kunststoffes a greater distance from each other than in a second part of the air flow area.
  • the cooling fins 5, 5 ' made of a good thermal conductivity material, such. As a light metal folded, in other embodiments, but they can also be wavy or rolled produced.
  • the cooling fins 5, 5 'non-positively or positively or materially connected to the cooling tubes 3, 3' are connected.
  • FIG. 2 shows a plan view of three-dimensionally illustrated cooling ribs 5, 5 'for a heat exchanger 1 according to the invention.
  • the cooling ribs 5, 5' are folded from a strip material.
  • the distance of the cooling fins 5 is denoted by a and the distance of the more spaced cooling fins 5 'with b.
  • the cooling fins 5, 5 ' can also be represented by individual small sheets.
  • Fig. 3 shows a particularly preferred application example of a heat exchanger 1 according to the invention with a view from above.
  • a flow direction of the cooling air is shown by arrows.
  • a fan 6 is arranged off-center in the flow direction of the cooling air behind the heat exchanger 1.
  • the fan 6 may be arranged in the flow direction of the cooling air before the heat exchanger 1.
  • the cooling fins not numbered in FIG. 3 have a smaller distance from each other in the area of the fan 6 than in the remaining area of the air flow area. With a and b the areas are again drawn, with the differently spaced cooling fins 5, 5 '.
  • a housing 7 is also provided, which deflects the cooling air in the direction of the fan 6.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

A heat exchanger (1) for a coolant circuit, wherein the heat exchanger has a coolant inlet (2) which opens into cooling tubes (3, 3') aligned substantially plane-parallel to one another in which the coolant can be conveyed to a coolant outlet, wherein the cooling tubes define an air passage region and wherein cooling fins (5, 5') substantially aligned in the direction of cooling air flowing through the heat exchanger are arranged between the cooling tubes, and wherein the cooling fins are a greater distance apart from one another in at least one first part of the air passage region than in a second part of the air passage region. The design according to the invention makes it possible to influence the flow and passage conditions of heat exchangers in a targeted manner, resulting in increased efficiency.

Description

Wärmetauscher  heat exchangers
Die Erfindung betrifft einen Wärmetauscher mit den Merkmalen aus dem Oberbegriff des Patentanspruchs 1. The invention relates to a heat exchanger with the features of the preamble of patent claim 1.
Bisher bekannte Luft-Medium-Wärmetauscher, hier speziell Kühlmittelkühler, werden nach geltenden Industriestandards mit einer einheitlichen Rippendichte bei der Luftlamelle ausgerüstet. Ein Beispiel hierfür ist aus der deutschen Offenlegungsschrift DE 10 2006 018 217 A1 , von der die vorliegende Erfindung ausgeht, bekannt. Aus dieser Offenlegungsschrift ist ein Wärmetauscher für ein Kraftfahrzeug bekannt, der in einen Kreislauf eingebunden ist, mit zwei Sammelkästen, einem gelöteten Kühlnetz, bestehend aus Flachrohren und Kühlrippen. Die Flachrohre verbinden die beiden Sammelkästen strömungstechnisch und mit einem ein- oder beidseitig des Kühlnetzes angeordnetem Rohr als Seitenteil, das mit der angrenzenden Kühlrippe mittels Löten verbunden ist. Die Flachrohre sind aus einem endlosen Rohr herstellbar. Die Herstellung des Wärmetauschers wird signifikant vereinfacht, wenn vorgesehen wird, dass das als Seitenteil dienende Rohr nicht durchströmt ist und entweder aus demselben oder aus einem anderen endlosen Rohr stammt, wie die Flachrohre. Wie insbesondere aus Figur 6 klar ersichtlich ist, weisen die Kühlrippen alle den gleichen Abstand auf. Previously known air-medium heat exchangers, in particular coolant radiators, are equipped according to applicable industry standards with a uniform rib density at the air lamella. An example of this is known from German published patent application DE 10 2006 018 217 A1, from which the present invention is based. From this publication, a heat exchanger for a motor vehicle is known, which is integrated in a circuit, with two manifolds, a soldered cooling network consisting of flat tubes and cooling fins. The flat tubes connect the two header boxes fluidically and with a one or both sides of the cooling network arranged pipe as a side part, which is connected to the adjacent fin by means of soldering. The flat tubes are made from an endless tube. The production of the heat exchanger is significantly simplified if it is provided that the pipe serving as a side part is not flowed through and comes either from the same or from another endless tube, such as the flat tubes. As can be clearly seen in particular from FIG. 6, the cooling fins all have the same spacing.
Aus der europäischen Patentanmeldung EP 0 537 650 A2 ist es bekannt, dass Wärmetauscher mit hoher Leistung sowie mit hohen Hygieneansprü- chen bevorzugt aus Stahl gefertigt und verzinkt werden. Es wurde gefunden, dass beim Aufbau der wärmeübertragenden Rippen anstelle von Lamellen durch vielreihige Platinen ein stabiler und resistenter Aufbau erreicht wird. Durch alternierenden Einsatz von Platinen unterschiedlicher Breite lassen sich in Durchsatzrichtung der zu kühlenden Luft unterschiedliche Teilungsab- stände der Platinen erreichen, ohne dass eine entsprechende Anzahl von als Ausgleichszonen wirksamen Lücken erforderlich wird. Durch das Entfallen oder erhebliche Reduzieren der Anzahl der Lücken können diese ohne wesentliche Beeinträchtigung der thermischen Leistung so weit gehalten werden, dass beim Verzinken Metallbrücken vermieden und während des Betriebes das Ansetzen von die Hygiene beeinträchtigenden Fremdkörpern unterbunden werden. From the European patent application EP 0 537 650 A2 it is known that heat exchangers with high performance and with high hygienic requirements preferably made of steel and galvanized. It has been found that in the construction of the heat-transmitting ribs instead of lamellae by means of multi-row circuit boards, a stable and resistant construction is achieved. By alternating use of boards of different widths, different pitches of the boards can be achieved in the throughput direction of the air to be cooled without a corresponding number of gaps acting as balancing zones being required. By eliminating or significantly reducing the number of gaps they can be kept so far without significant impairment of thermal performance that avoided during galvanizing metal bridges and prevent the preparation of hygiene impairing foreign bodies during operation.
Auch aus der amerikanischen Patentanmeldung US 2005/274501 A1 ist es ferner bekannt, die Rippenanzahl eines gattungsgemäßen Wärmetauschers in Strömungsrichtung der Kühlungsluft unterschiedlich dicht auszugestalten, um einen möglichst hohen Wirkungsgrad des Wärmetauschers zu erzielen. It is also known from United States Patent Application US 2005/274501 A1, the density of fins of a generic heat exchanger in the flow direction of the cooling air different density to design, in order to achieve the highest possible efficiency of the heat exchanger.
Aufgrund besonderer Bauraum- oder Einbaubedingungen, bzw. aus Strö- mungs-/Druckverlustgründen ist es bisher nicht möglich, die Luftverteilung innerhalb mehrerer verschalteter Wärmetauscher, z. B. einem Kühlmodul in einer Art zu beeinflussen, so dass eine Gleichverteilung oder auch, wenn gewünscht, eine Ungleichverteilung der Strömungsgeschwindigkeiten bzw. Druckverluste in z. B. den einzelnen Wärmetauschern stattfinden kann. Beispielhaft sei hier z. B. eine außermittige Anordnung eines Elektrolüfters an einem Wärmetauscher zu erwähnen. Due to special space or installation conditions, or for flow / pressure loss reasons, it is not yet possible, the air distribution within several interconnected heat exchanger, eg. B. a cooling module in a way to influence, so that a uniform distribution or, if desired, an unequal distribution of the flow velocities or pressure losses in z. B. the individual heat exchangers can take place. Exemplary here z. B. to mention an eccentric arrangement of an electric fan to a heat exchanger.
Aufgabe der vorliegenden Erfindung ist es daher, eine Maßnahme aufzuzeigen, mit der o. g. Nachteile vermieden werden. Object of the present invention is therefore to show a measure with the o. G. Disadvantages are avoided.
Diese Aufgabe wird durch das Merkmal im kennzeichnenden Teil des Patentanspruchs 1 gelöst. Erfindungsgemäß wird daher der Aufbau von Wärmetauschern mit variablen Kühlrippendichten, angepasst an den konkreten Einzelfall, vorgeschlagen. Aufgrund der erfindungsgemäßen Ausgestaltung ergibt sich eine gezielte Beeinflussung von Anström- bzw. Durchströmungsbedingungen von Wärmetauschern oder mehreren in sich verschalteten Wärmetauschern und damit eine Effizienzsteigerung in den entsprechenden Betriebspunkten. In vorteilhafter Weise wird eine optimale Anpassung von mehrflutigen Wärmetauschern, z. B. Klimakondensatoren mit Unterkühlstrecke, an dem speziellen Einbauort erzielt. This object is achieved by the feature in the characterizing part of patent claim 1. The invention therefore proposes the construction of heat exchangers with variable cooling fin densities, adapted to the specific individual case. Due to the inventive design results in a targeted influence of inflow or flow conditions of heat exchangers or more interconnected heat exchangers and thus an increase in efficiency in the corresponding operating points. Advantageously, an optimal adaptation of multi-flow heat exchangers, z. As climate capacitors with subcooling, achieved at the special installation.
Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen beschrieben. Advantageous developments of the invention are described in the subclaims.
Die Ausgestaltungen gemäß Patentanspruch 2 sind besonders bevorzugte Ausführungsbeispiele, bei denen thermisch gut leitendes Bandmaterial entweder gefaltet oder gewellt oder gerollt wird. In einem weiteren Ausführungsbeispiel können die Kühlrippen auch als Einzelrippen dargestellt werden. The embodiments according to claim 2 are particularly preferred embodiments in which thermally highly conductive strip material is either folded or corrugated or rolled. In a further embodiment, the cooling fins can also be represented as single ribs.
Die erfindungsgemäße Ausgestaltung erlaubt eine optimale Anpassung des Wärmetauschers an eine Anordnung gemäß den Patentansprüchen 3 und 4. The embodiment of the invention allows an optimal adaptation of the heat exchanger to an arrangement according to the claims 3 and 4.
Mit der Ausgestaltung gemäß Patentanspruch 5 lässt sich eine nochmalige Effizienz- bzw. Wirkungsgradsteigerung des erfindungsgemäßen Wärmetauschers erzielen. With the embodiment according to claim 5, a further increase in efficiency or efficiency of the heat exchanger according to the invention can be achieved.
Im Folgenden ist die Erfindung anhand eines bevorzugten Ausführungsbei- spieles in drei Figuren näher erläutert. In the following the invention with reference to a preferred embodiment is explained in more detail in three figures.
Fig. 1 zeigt schematisch eine Aufsicht auf einen erfindungsgemäßen Fig. 1 shows schematically a plan view of an inventive
Wärmetauscher. Fig. 2 zeigt schematisch eine Aufsicht auf die Kühlrippen für einen erfindungsgemäßen Wärmetauscher. Heat exchanger. Fig. 2 shows schematically a plan view of the cooling fins for a heat exchanger according to the invention.
Fig. 3 zeigt eine spezielle Ausführungsform des erfindungsgemäßen Fig. 3 shows a specific embodiment of the invention
Wärmetauschers in mit Blick von oben.  Heat exchanger in with view from above.
Fig. 1 zeigt schematisch eine Aufsicht auf einen erfindungsgemäßen Wärmetauscher 1. Der Wärmetauscher 1 ist insbesondere für einen Kühlmittelkreislauf einer Brennkraftmaschine geeignet. Der Wärmetauscher 1 weist einen als Schlauchstutzen ausgebildeten Kühlmitteleinlass 2 auf, der in weitgehend flächig parallel zueinander ausgerichtete Kühlrohre 3, 3' mündet. In diesen Kühlrohren strömt das Kühlmittel in den, dem Kühlmitteleinlass 2 gegenüberliegenden Kühlmittelauslass 4, der ebenfalls als Schlauchstutzen ausgebildet ist. Die Kühlrohre 3, 3' definieren durch die Ebene, die diese aufspannen einen Luftdurchströmungsbereich. Zwischen den Kühlrohren 3, 3' sind Kühlrippen 5, 5' angeordnet, die für einen möglichst geringen Strömungswiderstand weitgehend in Richtung einer den Wärmetauscher 1 durchströmenden Kühlluft ausgerichtet sind. Zum Schutz der Kühlrippen 5, 5' vor Verschmutzung und/oder Beschädigung ist ferner eine schraffiert dargestellte Netzmatrix 8 vorgesehen, die den Luftdurchströmungsbereich in der Abbildung nicht vollständig überdeckt. 1 shows schematically a plan view of a heat exchanger 1 according to the invention. The heat exchanger 1 is particularly suitable for a coolant circuit of an internal combustion engine. The heat exchanger 1 has a coolant inlet 2 designed as a hose nozzle, which opens into cooling pipes 3, 3 'oriented largely flat in parallel with one another. In these cooling tubes, the coolant flows into the coolant outlet 4, which is opposite to the coolant inlet 2 and which is likewise designed as a hose nozzle. The cooling tubes 3, 3 'define an air flow area through the plane which they span. Between the cooling tubes 3, 3 'cooling fins 5, 5' are arranged, which are aligned for the lowest possible flow resistance largely in the direction of a heat exchanger 1 flowing through the cooling air. In order to protect the cooling fins 5, 5 'against contamination and / or damage, a network matrix 8 shown hatched is also provided, which does not completely cover the air flow area in the illustration.
Erfindungsgemäß weisen die Kühlrippen 5, 5' zumindest in einem ersten Teil des Luftdurchströmungsbereiches einen größeren Abstand voneinander auf als in einem zweiten Teil des Luftdurchströmungsbereiches. According to the invention, the cooling fins 5, 5 ', at least in a first part of the Luftdurchströmungsbereiches a greater distance from each other than in a second part of the air flow area.
In dem vorliegenden Ausführungsbeispiel sind die Kühlrippen 5, 5' aus einem gut wärmeleitfähigen Material, wie z. B. einem Leichtmetall gefaltet, in anderen Ausführungsbeispielen können sie aber auch gewellt sein oder gerollt hergestellt werden. Weiter können die Kühlrippen 5, 5' kraft- oder form- oder stoffschlüssig mit den Kühlrohren 3, 3' verbunden werden. Fig. 2 zeigt eine Aufsicht auf dreidimensional dargestellte Kühlrippen 5, 5' für einen erfindungsgemäßen Wärmetauscher 1 Wie bereits erwähnt, sind in diesem vorliegenden Ausführungsbeispiel die Kühlrippen 5, 5' aus einem Bandmaterial gefaltet. Mit a und b sind die unterschiedlichen Abstände der Kühlrippen 5, 5' untereinander bezeichnet. In diesem Ausführungsbeispiel ist der Abstand der Kühlrippen 5 mit a bezeichnet und der Abstand der weiter beabstandeten Kühlrippen 5' mit b. Selbstverständlich können die Kühlrippen 5, 5' auch durch einzelne kleine Bleche dargestellt werden. In the present embodiment, the cooling fins 5, 5 'made of a good thermal conductivity material, such. As a light metal folded, in other embodiments, but they can also be wavy or rolled produced. Next, the cooling fins 5, 5 'non-positively or positively or materially connected to the cooling tubes 3, 3' are connected. FIG. 2 shows a plan view of three-dimensionally illustrated cooling ribs 5, 5 'for a heat exchanger 1 according to the invention. As already mentioned, in this present exemplary embodiment, the cooling ribs 5, 5' are folded from a strip material. With a and b, the different distances of the cooling fins 5, 5 'are designated with each other. In this embodiment, the distance of the cooling fins 5 is denoted by a and the distance of the more spaced cooling fins 5 'with b. Of course, the cooling fins 5, 5 'can also be represented by individual small sheets.
Fig. 3 zeigt ein besonders bevorzugtes Anwendungsbeispiel für einen erfindungsgemäßen Wärmetauscher 1 mit Blick von oben. Eine Strömungsrichtung der Kühlluft ist mit Pfeilen dargestellt. In diesem besonders bevorzugten Ausführungsbeispiel ist in Strömungsrichtung der Kühlluft hinter dem Wärmetauscher 1 ein Ventilator 6 außermittig angeordnet. In einem weiteren Ausführungsbeispiel kann der Ventilator 6 in Strömungsrichtung der Kühlluft auch vor dem Wärmetauscher 1 angeordnet sein. In diesem Ausführungsbeispiel weisen die in Fig. 3 nicht bezifferten Kühlrippen im Bereich des Ventilators 6 einen kleineren Abstand voneinander auf als im restlichen Bereich des Luftdurchströmungsbereiches. Mit a und b sind wieder die Bereiche eingezeichnet, mit den unterschiedlich beabstandeten Kühlrippen 5, 5'. Um die Kühlluft besonders effizient in Richtung Ventilator 6 zu leiten, ist ferner ein Gehäuse 7 vorgesehen, welches die Kühlluft in Richtung des Ventilators 6 umlenkt. Fig. 3 shows a particularly preferred application example of a heat exchanger 1 according to the invention with a view from above. A flow direction of the cooling air is shown by arrows. In this particularly preferred embodiment, a fan 6 is arranged off-center in the flow direction of the cooling air behind the heat exchanger 1. In a further embodiment, the fan 6 may be arranged in the flow direction of the cooling air before the heat exchanger 1. In this exemplary embodiment, the cooling fins not numbered in FIG. 3 have a smaller distance from each other in the area of the fan 6 than in the remaining area of the air flow area. With a and b the areas are again drawn, with the differently spaced cooling fins 5, 5 '. In order to guide the cooling air particularly efficiently in the direction of the fan 6, a housing 7 is also provided, which deflects the cooling air in the direction of the fan 6.
Erfindungsgemäß wird somit der Aufbau von Wärmetauschern 1 mit variablen Kühlrippendichten vorgeschlagen, die an den konkreten Einsatzfall ange- passt sind. Hierdurch ist eine gezielte Beeinflussung von Anström- bzw. According to the invention, the construction of heat exchangers 1 with variable cooling fin densities is proposed, which are adapted to the specific application. As a result, a targeted influence of Anström- or
Durchströmungsbedingungen von Wärmetauschern 1 oder mehreren in sich verschalteten Wärmetauschern 1 und damit eine Effizienzsteigerung in entsprechenden Betriebspunkten möglich. Auch ist die optimale Anpassung von mehrflutigen Wärmetauschern 1 , z. B. Klimakondensatoren mit Unterkühlstrecke an den speziellen Einbauort denkbar. Flow conditions of heat exchangers 1 or more interconnected heat exchangers 1 and thus an increase in efficiency in corresponding operating points possible. Also, the optimal adaptation of multi-flow heat exchangers 1, z. B. climate capacitors with subcooling to the special installation conceivable.
Bezuaszeichenliste: Bezuaszeichenliste:
1. Wärmetauscher1. heat exchanger
2. Kühlmitteleinlass2. Coolant inlet
3, 3' Kühlrohr 3, 3 'cooling tube
4. Kühlmittelauslass 4. Coolant outlet
5, 5' Kühlrippe 5, 5 'cooling fin
6. Ventilator 6. Fan
7. Gehäuse 7. Housing
8. Netzmatrix  8. Network matrix

Claims

Wärmetauscher Patentansprüche Heat exchanger claims
1. Wärmetauscher (1 ), insbesondere für einen Kühlmittelkreislauf, wobei der Wärmetauscher (1 ) einen Kühlmitteleinlass (2) aufweist, der in weitgehend flächig parallel zueinander ausgerichtete Kühlrohre (3, 3') mündet, in denen das Kühlmittel zu einem Kühlmittelauslass (4) leitbar ist, wobei die Kühlrohre (3, 3') einen Luftdurchströmungsbereich definieren und wobei zwischen den Kühlrohren (3, 3') Kühlrippen (5, 5') angeordnet sind, die weitgehend in Richtung einer den Wärmetauscher (1 ) durchströmenden Kühlluft ausgerichtet sind, 1. Heat exchanger (1), in particular for a coolant circuit, wherein the heat exchanger (1) has a coolant inlet (2) which opens into largely flat parallel to each other cooling tubes (3, 3 '), in which the coolant to a coolant outlet (4 ), wherein the cooling tubes (3, 3 ') define a Luftdurchströmungsbereich and wherein between the cooling tubes (3, 3') cooling ribs (5, 5 ') are arranged, which largely aligned in the direction of a heat exchanger (1) flowing through the cooling air are,
dadurch gekennzeichnet, dass in zumindest einem ersten Teil des Luft- durchströmungsbereiches die Kühlrippen (5, 5') einen größeren Abstand voneinander aufweisen als in einem zweiten Teil des Luftdurch- strömungsbereiches.  characterized in that in at least a first part of the air flow area the cooling fins (5, 5 ') have a greater distance from one another than in a second part of the air flow area.
2. Wärmetauscher nach Patentanspruch 1 , 2. Heat exchanger according to claim 1,
dadurch gekennzeichnet, dass die Kühlrippen (5, 5') gefaltet oder gewellt oder gerollt sind. characterized in that the cooling fins (5, 5 ') are folded or corrugated or rolled.
3. Wärmetauscher nach Patentanspruch 1 oder 2, 3. Heat exchanger according to claim 1 or 2,
dadurch gekennzeichnet, dass in Strömungsrichtung der Kühlluft vor oder hinter dem Wärmetauscher (1 ) ein Ventilator (6) angeordnet ist.  characterized in that in the flow direction of the cooling air in front of or behind the heat exchanger (1), a fan (6) is arranged.
4. Wärmetauscher nach Patentanspruch 3, 4. Heat exchanger according to claim 3,
dadurch gekennzeichnet, dass die Kühlrippen (5, 5') im Bereich des Ventilators (6) einen kleineren Abstand voneinander aufweisen als im restlichen Bereich des Luftdurchströmungsbereiches.  characterized in that the cooling fins (5, 5 ') in the region of the fan (6) have a smaller distance from one another than in the remaining region of the air flow area.
5. Wärmetauscher nach Patentanspruch 3 oder 4, 5. Heat exchanger according to claim 3 or 4,
dadurch gekennzeichnet, dass in Strömungsrichtung der Kühlluft hinter dem Wärmetauscher (1 ) ein Gehäuse (7) vorgesehen ist, welches die Kühlluft in Richtung Ventilator (6) umlenkt.  characterized in that in the flow direction of the cooling air behind the heat exchanger (1) a housing (7) is provided, which deflects the cooling air in the direction of the fan (6).
PCT/EP2013/050841 2012-02-24 2013-01-17 Heat exchanger WO2013124096A1 (en)

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DE102012202883A DE102012202883A1 (en) 2012-02-24 2012-02-24 heat exchangers
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CN116583707B (en) * 2020-12-14 2024-06-11 阿塞泰克丹麦公司 Radiator, radiator assembly, liquid cooling circuit, computing system and method for producing radiator

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