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EP2771636B1 - Heat exchanger - Google Patents

Heat exchanger Download PDF

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Publication number
EP2771636B1
EP2771636B1 EP12787406.3A EP12787406A EP2771636B1 EP 2771636 B1 EP2771636 B1 EP 2771636B1 EP 12787406 A EP12787406 A EP 12787406A EP 2771636 B1 EP2771636 B1 EP 2771636B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
tube
base
elevation
contact region
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP12787406.3A
Other languages
German (de)
French (fr)
Other versions
EP2771636A1 (en
Inventor
Timo Gruber
Werner Helms
Chi-Duc Nguyen
Hicham Rouhana
Peter Wolfangel
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
Mahle 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 Mahle Behr GmbH and Co KG filed Critical Mahle Behr GmbH and Co KG
Publication of EP2771636A1 publication Critical patent/EP2771636A1/en
Application granted granted Critical
Publication of EP2771636B1 publication Critical patent/EP2771636B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • B21D53/08—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal
    • 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
    • F28D1/05358—Assemblies of conduits connected side by side or with individual headers, e.g. section 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
    • F28D1/04—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
    • F28D1/04—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
    • F28D1/05383—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits
    • 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
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0221—Header boxes or end plates formed by stacked elements
    • 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
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0224—Header boxes formed by sealing end plates into covers
    • 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
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • F28F9/0224—Header boxes formed by sealing end plates into covers
    • F28F9/0226—Header boxes formed by sealing end plates into covers with resilient gaskets
    • 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
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2225/00—Reinforcing means
    • F28F2225/04—Reinforcing means for conduits

Definitions

  • the invention relates to a heat exchanger, with a ribs and pipes having block, which is arranged between a first collecting box for the entry of the medium to be cooled and a second collection box for the exit of this medium, each collecting box is closed with a bottom, which passes for receiving the Having tubes and extending along the edge of the bottom a channel-shaped circulation for receiving the collecting tank.
  • Conventional heat exchangers consist of an inlet collecting box and an outlet collecting box, a block being arranged between the two collecting boxes, in which tubes are located, which connect the two collecting boxes to one another.
  • the heat exchanger is arranged in front of the internal combustion engine. Through the two headers and the pipes flows a cooling medium, which is heated by a, emitted by the internal combustion engine heat.
  • the between the pipes Trained ribs are penetrated by an air flow, which absorbs the heat released from the cooling medium and dissipates from the region of the heat exchanger. The thus cooled cooling medium is returned to the engine.
  • Each collection box is closed with a bottom.
  • the bottom comprises a plurality of openings, wherein in each opening in each case a tube, which preferably has a rectangular cross-section, is pushed in.
  • the opening receiving the tube has an indentation in the form of a clamping nose on the end face, which serves to open it into the opening to hold the inserted tube frictionally before soldering.
  • the DE 10 2006 005 421 A1 describes a heat exchanger, wherein the bottom has at its end face in the direction of the collecting box directed cams. Between the cams and the bottom edge of the collecting box is clamped, which is why it can be dispensed with further fastening devices, such as on a, poor bottom edge circumferential bead.
  • the invention is therefore an object of the invention to provide a heat exchanger in which the, the front sides of the bottom directly opposite tubes despite lack of ribs have a high strength.
  • the object is achieved in that the floor has at least one end face an elevated contact area for the, the end face directly opposite tube.
  • This system area takes over the support of the pipe, whereby the pressure swing resistance of the heat exchanger is increased.
  • Such an investment area is easily produced while maintaining the cross section of the passage of the soil.
  • the abutment region is formed rising from the channel-shaped circulation to a passage receiving the tube, wherein the abutment region preferably spans a widened region between the rear side of the channel-shaped circulation and the passage.
  • the so-far investment area defuses the critical area and leads to a stabilization of the tube, which runs directly parallel to the front side.
  • the contact area assumes the support function and prevents weakening of the heat exchanger.
  • the investment area is limited locally. Due to the local limitation of the contact area, it can be worked into the ground at the point where the heat exchanger shows an unstable behavior.
  • the contact area is designed as a survey of the soil, which are facing away from the collecting tank in the direction of Side of the ground rises. This survey extends to the first, parallel to the end face of the bottom pipe without the cross section of, the tube receiving passage is reduced. Due to this survey space is saved, and it can be dispensed with a rib that can be formed only with elaborate design measures on the block to support this tube.
  • the survey is arranged approximately centrally on the front side of the floor.
  • This central arrangement not only allows the support to be formed where the greatest possible stress of the pipe is present, but also serves as an assembly aid.
  • the edge ends of the pipe When the soil is pressed onto the pipes, the edge ends of the pipe always spread somewhat, since the introduction of force via the side parts of the pipes generally can not take place over the entire length of the ribs.
  • the pipe end of the pipe extending directly parallel to one of the end faces is aligned again with the respective passage of the floor, so that a probability of damage to the pipe is reduced during the pressing of the heat exchanger.
  • the survey is soldered to the, which the front side directly opposite tube receiving passage. This will ensure that the pipe will maintain the one-time position during the life of the heat exchanger.
  • the survey is designed as a stamped from the ground imprint. This eliminates additional components to form the survey.
  • the survey can be generated simultaneously with the passages in the production of the soil, whereby the manufacturing process is simplified.
  • the investment area is formed by the, the front side opposite pipe receiving passage, which is drawn to the channel-shaped circulation in the ground.
  • the reinforcement of the passage allows to use this as an insertion aid for the pipe end, whereby the pipe is arranged parallel to the passage and damage during pressing of the soil are prevented on the block of pipes and ribs.
  • a folded tube is used. Although this pipe is very unstable during processing, the elevation or increase of the contact area ensures that the folded pipe retains its shape when pressed into the ground. Further advantageous embodiments are described by the following description of the figures and by the subclaims.
  • FIG. 1 is a heat exchanger 1, in particular a coolant radiator, shown, which consists of a block 2, which is arranged between two manifolds 3, 4, wherein the first collection box 3 can serve the entry of a medium to be cooled in the heat exchanger 1, while the cooled medium can leave the heat exchanger 1 through the second collection box 4.
  • the first collection box but also include entry and exit, while then causes the second collection box only a deflection without discharge.
  • Each collecting box 3, 4 in this case has a bottom 5, 6, on which the block 2, which is closed by a side part 7, connects.
  • the block 2 consists of a plurality of tubes 8 and a plurality of ribs 9, wherein tube 8 and rib 9 are preferably arranged alternately to one another.
  • the collecting tank 3 in this case has a nozzle 10, in which flows, derived from the not further shown internal combustion engine and heated by this coolant, which is passed through the tubes 8 of the block 2 to the second reservoir 4.
  • a gaseous medium preferably air
  • the second header 4 of the heat exchanger 1 in which the cooled cooling medium flows, comprises a further nozzle 11, through which the cooling medium discharged from the heat exchanger 1 and fed back to the internal combustion engine.
  • the tubes 8 have a rectangular cross-section. They are preferably folded. How out FIG. 2 can be seen, in which the bottom 5 of the collecting box 3 is shown in sections, the bottom 5, which is also formed like a rectangle, a plurality of passages 12.
  • the passage 12 is an opening which is also rectangular in shape and in which the end of each tube 8 is inserted.
  • the parallel to the end faces 13 of the bottom extending tubes 8a, 8b are unstable, which can lead to a pipe breakage.
  • the bottom 5 has a channel-shaped circulation 14, in which the collecting box 3 is inserted with the interposition of a seal.
  • This circulation 14 is in FIG. 2 shown as outwardly swept hollow part.
  • the circulation 14 is separated from the tubes 8a and 8b by a widened region 15.
  • Starting from this channel-shaped circulation 14 extends a survey 16 to the passage 12 a, which receives the first, directly opposite the end face 13 opposite tube 8 a.
  • This bump 16 once has the effect of stabilizing the position of the tube 8a extending in the first passage 12a.
  • the elevation 16 serves to clamp the tubes 8 to the bottom 5, the folded tube 8a, which spreads easily under the pressure of the block 2, to lead into the passage 12a, whereby the end of the tube 8a again parallel to the passage 12a stand and easy processing is possible.
  • FIG. 3 the bottom 5 is shown in a view from below, in which it is clear that the passages 12 have a collar-like design, so that they can better enclose the tubes 8. From this view, in particular the section BB, it is clear that the elevation 16 is pronounced from the bottom 5.
  • the bottom 5 is produced together with the passages 12 in a punching process from a metal sheet.
  • FIG. 4 Where again the bottom 5 is shown in section, it can be seen that the elevation 16, which rises on the side of the bottom 5, which is opposite to the collecting box 3, extends to the first passage 12a of the first tube 8a. In particular from FIG. 4b it is clear that the elevation 16 extends higher than the passage 12a is formed.
  • the advantage here is that the survey 16 but does not reduce the cross section of the passage 12a, but this holds constant, so that a pipe in a conventional size can be used there.
  • the end of the tube 8 a is stirred during assembly in the passage 12 a. As a result, the tube end of the tube 8a again aligns with the passage 12a, whereby a probability of damage is reduced.
  • the survey 16 can be easily integrated into a punching tool.
  • a reciprocal use of designs of the bottom 5, 6 with and without survey is possible without adjustment measure in each block paver.
  • a block paver represents a tool in which the heat exchanger 1 is manufactured as a whole. Thus, the manufacturing processes are not changed in the block production.
  • FIG. 5 shows an end portion of the bottom 5 of the invention, in which circumferentially a groove-shaped groove is formed as a circulation 14, in which the collection box, not shown, can be used with its Sammelkastenfuß with the interposition of a seal, not shown.
  • This circulation 14 is formed as an outwardly swept U-shaped hollow part, wherein in the middle of the narrow sides of an oppositely curved portion 20 immediately adjoins the U-shaped hollow part 14 and as For example, recording can serve for a side panel.
  • the circulation 14 is separated by a widened region 15 from the tube openings or from the passages 12a. Starting from this channel-shaped circulation 14 extends a survey 16 to the passage 12 a, which receives the first, directly opposite the end face 13 opposite tube 8 a.

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

Description

Technisches GebietTechnical area

Die Erfindung betrifft einen Wärmeübertrager, mit einem Rippen und Rohre aufweisenden Block, welcher zwischen einem ersten Sammelkasten zum Eintritt des zu kühlenden Mediums und einem zweiten Sammelkasten zum Austritt dieses Mediums angeordnet ist, wobei jeder Sammelkasten mit einem Boden abgeschlossen ist, welcher Durchzüge zur Aufnahme der Rohre aufweist und sich entlang des Randes des Bodens ein rinnenförmiger Umlauf zur Aufnahme des Sammelkastens erstreckt.The invention relates to a heat exchanger, with a ribs and pipes having block, which is arranged between a first collecting box for the entry of the medium to be cooled and a second collection box for the exit of this medium, each collecting box is closed with a bottom, which passes for receiving the Having tubes and extending along the edge of the bottom a channel-shaped circulation for receiving the collecting tank.

DE 10 2007 052 888 A1 offenbart einen derartigen Wärmeübertrager. DE 10 2007 052 888 A1 discloses such a heat exchanger.

Stand der TechnikState of the art

Übliche Wärmeübertrager bestehen aus einem Eintrittssammelkasten und einem Austrittssammelkasten, wobei zwischen den beiden Sammelkästen ein Block angeordnet ist, in welchem sich Rohre befinden, die die beiden Sammelkästen miteinander verbinden. Der Wärmeübertrager ist dabei vor dem Verbrennungsmotor angeordnet. Durch die beiden Sammelkästen sowie die Rohre strömt ein Kühlmedium, welches durch eine, vom Verbrennungsmotor abgegebene Wärme erhitzt ist. Die zwischen den Rohren ausgebildeten Rippen werden von einer Luftströmung durchsetzt, welche die von dem Kühlmedium abgegebene Wärme aufnimmt und aus dem Bereich des Wärmeübertragers abführt. Das so abgekühlte Kühlmedium wird dem Verbrennungsmotor wieder zugeführt.Conventional heat exchangers consist of an inlet collecting box and an outlet collecting box, a block being arranged between the two collecting boxes, in which tubes are located, which connect the two collecting boxes to one another. The heat exchanger is arranged in front of the internal combustion engine. Through the two headers and the pipes flows a cooling medium, which is heated by a, emitted by the internal combustion engine heat. The between the pipes Trained ribs are penetrated by an air flow, which absorbs the heat released from the cooling medium and dissipates from the region of the heat exchanger. The thus cooled cooling medium is returned to the engine.

Aus der DE 10 2009 035 089 A1 ist ein gattungsgemäßer Wärmeübertrager bekannt. Jeder Sammelkasten ist dabei mit einem Boden verschlossen. Der Boden umfasst mehrere Öffnungen, wobei in jede Öffnung je ein Rohr, welches vorzugsweise einen rechteckigen Querschnitt aufweist, eingeschoben ist Dabei weist die, das Rohr aufnehmende Öffnung an der Stirnseite eine Einwölbung in Form einer Klemmnase auf, welche dazu dient, das in die Öffnung eingeschobene Rohr vor dem Verlöten reibschlüssig zu halten.From the DE 10 2009 035 089 A1 is a generic heat exchanger known. Each collection box is closed with a bottom. The bottom comprises a plurality of openings, wherein in each opening in each case a tube, which preferably has a rectangular cross-section, is pushed in. In this case, the opening receiving the tube has an indentation in the form of a clamping nose on the end face, which serves to open it into the opening to hold the inserted tube frictionally before soldering.

Die DE 10 2006 005 421 A1 beschreibt einen Wärmeübertrager, bei welchem der Boden an seiner Stirnseite in Richtung des Sammelkasten gerichtete Nocken aufweist. Zwischen den Nocken und dem Bodenrand wird der Sammelkasten eingespannt, weshalb auf weitere Befestigungseinrichtungen, wie auf eine, arm Bodenrand umlaufende Sicke, verzichtet werden kann.The DE 10 2006 005 421 A1 describes a heat exchanger, wherein the bottom has at its end face in the direction of the collecting box directed cams. Between the cams and the bottom edge of the collecting box is clamped, which is why it can be dispensed with further fastening devices, such as on a, poor bottom edge circumferential bead.

Insbesondere durch einen häufigen Innendrückwechsel des, in den Rohren strömenden Kühlmittels kommt es zu Ausfällen an den äußeren Rohren, welche insbesondere den Stirnseiten des Bodens gegenüberliegen. Die Kühlrippen, welche üblicherweise diese Rohre stabilisieren und stützen, sind bei diesen äußeren Rohren aus Bauraumgründen nicht einsetzbar. Insbesondere bei der Verwendung von Rohren in gefalzter Ausführung, welche eine geringe Wandstärke aufweisen, kommt es zu einer instabilen Kontur des Wärmeübertragers. Durch das Fehlen der Rippen an den beiden, den Stirnseiten des Bodens gegenüber liegenden Rohren kann es durch den Druckwechsel aufgrund einer auftretenden Kerbwirkung zu einem Dauerbruch im Falzbereich der Rohre kommen, was zu einem Ausfall des Wärmeübertragers führt.In particular, by a frequent internal pressure change of, flowing in the tubes coolant it comes to failures on the outer tubes, which in particular face the front sides of the soil. The cooling fins, which usually stabilize and support these pipes are not applicable to these outer tubes for reasons of space. In particular, when using tubes in folded version, which have a low wall thickness, there is an unstable contour of the heat exchanger. Due to the absence of the ribs on the two, the front sides of the floor opposite tubes may cause a fatigue fracture in the rebate area of the tubes due to the pressure change due to an occurring notch effect, resulting in failure of the heat exchanger.

Darstellung der Erfindung, Aufgabe, Lösung, VorteilePresentation of the invention, object, solution, advantages

Der Erfindung liegt somit die Aufgabe zugrunde, einen Wärmeübertrager anzugeben, bei welchem die, den Stirnseiten des Bodens unmittelbar gegenüber liegenden Rohre trotz fehlender Rippen eine hohe Festigkeit aufweisen.The invention is therefore an object of the invention to provide a heat exchanger in which the, the front sides of the bottom directly opposite tubes despite lack of ribs have a high strength.

Erfindungsgemäß wird die Aufgabe dadurch gelöst, dass der Boden an mindestens einer Stirnseite einen erhöhten Anlagebereich für das, der Stirnseite unmittelbar gegenüber liegende Rohr aufweist. Dieser Anlagebereich übernimmt die Abstützung des Rohres, wodurch die Druckwechselfestigkeit des Wärmeübertragers erhöht wird. Ein solcher Anlagebereich ist dabei einfach unter Beibehaltung des Querschnittes des Durchzuges des Bodens herstellbar.According to the invention, the object is achieved in that the floor has at least one end face an elevated contact area for the, the end face directly opposite tube. This system area takes over the support of the pipe, whereby the pressure swing resistance of the heat exchanger is increased. Such an investment area is easily produced while maintaining the cross section of the passage of the soil.

Vorteilhafterweise ist der Anlagebereich von dem rinnenförmigen Umlauf zu einem das Rohr aufnehmenden Durchzug ansteigend ausgebildet, wobei der Anlagebereich vorzugsweise einen aufgeweiteten Bereich zwischen der Rückseite des rinnenförmigen Umlaufes und dem Durchzug überspannt. Der sich so erstreckende Anlagebereich entschärft den kritischen Bereich und führt zu einer Stabilisierung des Rohres, welches direkt parallel zur Stirnseite verläuft. Der Anlagebereich übernimmt dabei die Stützfunktion und verhindert eine Schwächung des Wärmeübertragers.Advantageously, the abutment region is formed rising from the channel-shaped circulation to a passage receiving the tube, wherein the abutment region preferably spans a widened region between the rear side of the channel-shaped circulation and the passage. The so-far investment area defuses the critical area and leads to a stabilization of the tube, which runs directly parallel to the front side. The contact area assumes the support function and prevents weakening of the heat exchanger.

In einer Ausgestaltung ist der Anlagebereich lokal begrenzt. Durch die lokale Begrenzung des Anlagebereiches kann dieser gezielt an der Stelle in den Boden eingearbeitet werden, wo der Wärmeübertrager ein instabiles Verhalten zeigt.In one embodiment, the investment area is limited locally. Due to the local limitation of the contact area, it can be worked into the ground at the point where the heat exchanger shows an unstable behavior.

In einer Weiterbildung ist der Anlagebereich als Erhebung des Bodens ausgebildet, welche sich in Richtung der, dem Sammelkasten abgewandten Seite des Bodens erhebt. Diese Erhebung reicht bis an das erste, parallel zur Stirnseite des Bodens verlaufende Rohr, ohne dass der Querschnitt des, das Rohr aufnehmenden Durchzuges verkleinert wird. Aufgrund dieser Erhebung wird Bauraum eingespart, und es kann auf eine Rippe, die nur mit aufwendigen konstruktiven Maßnahmen an dem Block zur Stützung dieses Rohres ausgebildet werden kann, verzichtet werden.In a further development of the contact area is designed as a survey of the soil, which are facing away from the collecting tank in the direction of Side of the ground rises. This survey extends to the first, parallel to the end face of the bottom pipe without the cross section of, the tube receiving passage is reduced. Due to this survey space is saved, and it can be dispensed with a rib that can be formed only with elaborate design measures on the block to support this tube.

In einer Variante ist die Erhebung an der Stirnseite des Bodens annähernd mittig angeordnet. Diese mittige Anordnung erlaubt nicht nur die Abstützung dort auszubilden, wo die größtmögliche Beanspruchung des Rohres vorliegt, sondern dient gleichzeitig als Montagehilfe. Beim Aufdrücken des Bodens auf die Rohre spreizen die Randenden des Rohres immer etwas ab, da die Krafteinleitung über die Seitenteile der Rohre im Allgemeinen nicht über die komplette Rippenlänge erfolgen kann. Bei der Verwendung eines Bodens mit der mittigen Erhebung wird das Rohrende des sich direkt parallel zu einer der Stirnseiten erstreckenden Rohres wieder mit dem jeweiligen Durchzug des Bodens ausgerichtet, so dass eine Wahrscheinlichkeit einer Beschädigung des Rohres bei dem Verpressen des Wärmeübertragers reduziert wird. Diese mittigen Erhebungen sind einfach in ein Stanzwerkzeug integrierbar und können im Blockfertiger verwendet werden.In a variant, the survey is arranged approximately centrally on the front side of the floor. This central arrangement not only allows the support to be formed where the greatest possible stress of the pipe is present, but also serves as an assembly aid. When the soil is pressed onto the pipes, the edge ends of the pipe always spread somewhat, since the introduction of force via the side parts of the pipes generally can not take place over the entire length of the ribs. When using a bottom with the central elevation, the pipe end of the pipe extending directly parallel to one of the end faces is aligned again with the respective passage of the floor, so that a probability of damage to the pipe is reduced during the pressing of the heat exchanger. These central elevations are easy to integrate into a punching tool and can be used in the block paver.

Vorteilhafterweise ist die Erhebung mit dem, das der Stirnseite unmittelbar gegenüber liegende Rohr aufnehmenden Durchzug verlötet. Dadurch wird sichergestellt, dass das Rohr die einmal vorhandene Position während der Lebensdauer des Wärmeübertragers beibehält.Advantageously, the survey is soldered to the, which the front side directly opposite tube receiving passage. This will ensure that the pipe will maintain the one-time position during the life of the heat exchanger.

In einer weiteren Ausgestaltung ist die Erhebung als eine, aus dem Boden gestanzte Einprägung ausgebildet. Somit entfallen zusätzliche Bauteile zur Ausbildung der Erhebung. Die Erhebung kann gleichzeitig mit den Durchzügen bei der Herstellung des Bodens erzeugt werden, wodurch das Herstellungsverfahren vereinfacht wird.In a further embodiment, the survey is designed as a stamped from the ground imprint. This eliminates additional components to form the survey. The survey can be generated simultaneously with the passages in the production of the soil, whereby the manufacturing process is simplified.

In einer Variante ist der Anlagebereich durch den, das der Stirnseite gegenüber liegende Rohr aufnehmenden Durchzug gebildet, welcher bis zum rinnenförmigen Umlauf im Boden gezogen ist. Die Verstärkung des Durchzuges erlaubt, diesen als Einführhilfe für das Rohrende zu nutzen, wodurch das Rohr parallel zum Durchzug angeordnet wird und Beschädigungen beim Aufdrücken des Bodens auf den Block aus Rohren und Rippen unterbunden werden.In a variant of the investment area is formed by the, the front side opposite pipe receiving passage, which is drawn to the channel-shaped circulation in the ground. The reinforcement of the passage allows to use this as an insertion aid for the pipe end, whereby the pipe is arranged parallel to the passage and damage during pressing of the soil are prevented on the block of pipes and ribs.

In einer anderen Ausführungsform wird ein gefalztes Rohr verwendet. Obwohl dieses Rohr sehr instabil bei der Verarbeitung ist, wird durch die Erhebung bzw. die Erhöhung des Anlagebereiches sichergestellt, dass das gefalzte Rohr seine Form beim Einpressen in den Boden beibehält.
Weitere vorteilhafte Ausgestaltungen sind durch die nachfolgende Figurenbeschreibung und durch die Unteransprüche beschrieben.In another embodiment, a folded tube is used. Although this pipe is very unstable during processing, the elevation or increase of the contact area ensures that the folded pipe retains its shape when pressed into the ground.
Further advantageous embodiments are described by the following description of the figures and by the subclaims.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Nachstehend wird die Erfindung auf der Grundlage zumindest eines Ausführungsbeispiels anhand der Zeichnungen näher erläutert. Es zeigen:

Figur 1:
Darstellung eines Wärmeübertragers,
Figur 2:
Modellansicht eines Bodens eines Wärmeübertragers in einer Ansicht von oben,
Figur 3:
Modellansicht des Bodens des Wärmeübertragers in einer Ansicht von unten,
Figur 4:
Ausschnitt eines Bodens des Wärmeübertragers mit einer Erhebung, und
Figur 5:
Schnitt durch einen Boden eines Wärmeübertragers.
The invention will be explained in more detail on the basis of at least one embodiment with reference to the drawings. Show it:
FIG. 1:
Representation of a heat exchanger,
FIG. 2:
Model view of a bottom of a heat exchanger in a view from above,
FIG. 3:
Model view of the bottom of the heat exchanger in a view from below,
FIG. 4:
Section of a floor of the heat exchanger with a survey, and
FIG. 5:
Section through a bottom of a heat exchanger.

Bevorzugte Ausführung der ErfindungPreferred embodiment of the invention

Gleiche Merkmale sind mit gleichen Bezugszeichen gekennzeichnet.Identical features are identified by the same reference numerals.

In Figur 1 ist ein Wärmeübertrager 1, insbesondere ein Kühlmittelkühler, dargestellt, welcher aus einem Block 2 besteht, der zwischen zwei Sammelkästen 3, 4 angeordnet ist, wobei der erste Sammelkasten 3 dem Eintritt eines zu kühlenden Mediums in den Wärmeübertrager 1 dienen kann, während das abgekühlte Medium den Wärmeübertrager 1 durch den zweiten Sammelkasten 4 verlassen kann. Bei einer anderen Variante kann der erste Sammelkasten aber auch Eintritt und Austritt umfassen, während dann der zweite Sammelkasten nur eine Umlenkung ohne Ausleitung bewirkt.In FIG. 1 is a heat exchanger 1, in particular a coolant radiator, shown, which consists of a block 2, which is arranged between two manifolds 3, 4, wherein the first collection box 3 can serve the entry of a medium to be cooled in the heat exchanger 1, while the cooled medium can leave the heat exchanger 1 through the second collection box 4. In another variant, the first collection box but also include entry and exit, while then causes the second collection box only a deflection without discharge.

Jeder Sammelkasten 3, 4 weist dabei einen Boden 5, 6 auf, an dem sich der Block 2, welcher durch ein Seitenteil 7 abgeschlossen ist, anschließt. Der Block 2 besteht aus mehreren Rohren 8 und mehreren Rippen 9, wobei Rohr 8 und Rippe 9 bevorzugt abwechselnd zueinander angeordnet sind. Der Sammelkasten 3 weist dabei einen Stutzen 10 auf, in welchen das, aus dem nicht weiter dargestellten Verbrennungsmotor abgeleitete und von diesem aufgeheizte Kühlmittel einströmt, das durch die Rohre 8 des Blockes 2 zum zweiten Sammelbehälter 4 geleitet wird. Durch den Block 2, insbesondere die Rippen 9, wird ein gasförmiges Medium, vorzugsweise Luft, geleitet, welches die Wärme des durch die Rohre 8 fließenden Kühlmediums aufnimmt und die Wärme aus dem Wärmeübertrager 1 abführt. Auf diese Weise wird das Kühlmedium abgekühlt. Der zweite Sammelkasten 4 des Wärmeübertragers 1, in welchem das abgekühlte Kühlmedium strömt, umfasst einen weiteren Stutzen 11, durch welchen das Kühlmedium aus dem Wärmeübertrager 1 ausgeleitet und wieder dem Verbrennungsmotor zugeführt wird.Each collecting box 3, 4 in this case has a bottom 5, 6, on which the block 2, which is closed by a side part 7, connects. The block 2 consists of a plurality of tubes 8 and a plurality of ribs 9, wherein tube 8 and rib 9 are preferably arranged alternately to one another. The collecting tank 3 in this case has a nozzle 10, in which flows, derived from the not further shown internal combustion engine and heated by this coolant, which is passed through the tubes 8 of the block 2 to the second reservoir 4. Through the block 2, in particular the ribs 9, a gaseous medium, preferably air, passed, which absorbs the heat of the flowing through the tubes 8 cooling medium and dissipates the heat from the heat exchanger 1. In this way, the cooling medium is cooled. The second header 4 of the heat exchanger 1, in which the cooled cooling medium flows, comprises a further nozzle 11, through which the cooling medium discharged from the heat exchanger 1 and fed back to the internal combustion engine.

Die Rohre 8 besitzen einen rechteckähnlichen Querschnitt. Sie sind vorzugsweise gefalzt. Wie aus Figur 2 ersichtlich, in welcher der Boden 5 des Sammelkasten 3 ausschnittweise dargestellt ist, weist der Boden 5, der ebenfalls rechteckähnlich ausgebildet ist, mehrere Durchzüge 12 auf. Der Durchzug 12 ist eine Öffnung, welche ebenfalls rechteckförmig ausgebildet ist und in den das Ende jeweils eines Rohres 8 eingeschoben wird. Bei dem ersten Rohr 8a und dem letzten Rohr 8b des Blockes 2, die jeweils direkt parallel zu einer Stirnseite 13 des Bodens 5 verlaufen, ergibt sich das Problem, dass die Rippen 9 nicht bis an den Boden 5 heranreichen. Dadurch sind die parallel zu den Stirnseiten 13 des Bodens verlaufenden Rohre 8a, 8b instabil, was zu einem Rohrbruch führen kann.The tubes 8 have a rectangular cross-section. They are preferably folded. How out FIG. 2 can be seen, in which the bottom 5 of the collecting box 3 is shown in sections, the bottom 5, which is also formed like a rectangle, a plurality of passages 12. The passage 12 is an opening which is also rectangular in shape and in which the end of each tube 8 is inserted. In the case of the first tube 8a and the last tube 8b of the block 2, which each run directly parallel to an end face 13 of the bottom 5, there is the problem that the ribs 9 do not reach all the way to the bottom 5. As a result, the parallel to the end faces 13 of the bottom extending tubes 8a, 8b are unstable, which can lead to a pipe breakage.

Der Boden 5 besitzt einen rinnenförmigen Umlauf 14, in welchen der Sammelkasten 3 unter Zwischenlegung einer Dichtung eingesetzt wird. Dieser Umlauf 14 ist in Figur 2 als nach außen gekehrtes Hohlteil dargestellt. Der Umlauf 14 ist durch einen aufgeweiteten Bereich 15 von den Rohren 8a bzw. 8b getrennt. Ausgehend von diesem rinnenförmigen Umlauf 14 erstreckt sich eine Erhebung 16 bis zu dem Durchzug 12a, welcher das erste, direkt der Stirnseite 13 gegenüber liegende Rohr 8a aufnimmt. Diese Erhebung 16 hat einmal den Effekt, dass das Rohr 8a, welches sich in dem ersten Durchzug 12a erstreckt, in seiner Position stabilisiert wird. Des Weiteren dient die Erhebung 16 dazu, beim Verklemmen der Rohre 8 mit dem Boden 5 das gefalzte Rohr 8a, welches sich unter dem Druck des Blockes 2 leicht spreizt, in den Durchzug 12a zu führen, wodurch das Ende des Rohres 8a wieder parallel zum Durchzug 12a stehen und eine einfache Verarbeitung möglich ist.The bottom 5 has a channel-shaped circulation 14, in which the collecting box 3 is inserted with the interposition of a seal. This circulation 14 is in FIG. 2 shown as outwardly swept hollow part. The circulation 14 is separated from the tubes 8a and 8b by a widened region 15. Starting from this channel-shaped circulation 14 extends a survey 16 to the passage 12 a, which receives the first, directly opposite the end face 13 opposite tube 8 a. This bump 16 once has the effect of stabilizing the position of the tube 8a extending in the first passage 12a. Furthermore, the elevation 16 serves to clamp the tubes 8 to the bottom 5, the folded tube 8a, which spreads easily under the pressure of the block 2, to lead into the passage 12a, whereby the end of the tube 8a again parallel to the passage 12a stand and easy processing is possible.

In Figur 3 ist der Boden 5 in einer Ansicht von unten dargestellt, bei welchem deutlich wird, dass die Durchzüge 12 eine kragenähnliche Ausführung haben, damit sie die Rohre 8 besser umschließen können. Aus dieser Ansicht, insbesondere dem Schnitt B-B, wird deutlich, dass die Erhebung 16 aus dem Boden 5 ausgeprägt ist. Der Boden 5 wird gemeinsam mit den Durchzügen 12 in einem Stanzprözess aus einem Blech hergestellt.In FIG. 3 the bottom 5 is shown in a view from below, in which it is clear that the passages 12 have a collar-like design, so that they can better enclose the tubes 8. From this view, in particular the section BB, it is clear that the elevation 16 is pronounced from the bottom 5. The bottom 5 is produced together with the passages 12 in a punching process from a metal sheet.

Aus Figur 4, wo noch einmal der Boden 5 im Ausschnitt dargestellt ist, ist ersichtlich, dass die Erhebung 16, welche sich auf der Seite des Bodens 5 erhebt, welcher dem Sammelkasten 3 entgegengesetzt ist, sich bis an den ersten Durchzug 12a des ersten Rohres 8a erstreckt. Insbesondere aus Figur 4b wird deutlich, dass die Erhebung 16 sich höher erstreckt als der Durchzug 12a ausgebildet ist. Von Vorteil ist dabei, dass die Erhebung 16 aber nicht den Querschnitt des Durchzuges 12a verkleinert, sondern diesen konstant hält, so dass ein Rohr in einer gebräuchlichen Größe dort eingesetzt werden kann. Mit Hilfe dieser Erhebung 16 wird das Ende des Rohres 8a bei der Montage in den Durchzug 12a gerührt. Dadurch richtet sich das Rohrende des Rohres 8a wieder mit dem Durchzug 12a aus, wodurch eine Beschädigungswahrscheinlichkeit reduziert wird.Out FIG. 4 Where again the bottom 5 is shown in section, it can be seen that the elevation 16, which rises on the side of the bottom 5, which is opposite to the collecting box 3, extends to the first passage 12a of the first tube 8a. In particular from FIG. 4b it is clear that the elevation 16 extends higher than the passage 12a is formed. The advantage here is that the survey 16 but does not reduce the cross section of the passage 12a, but this holds constant, so that a pipe in a conventional size can be used there. With the help of this survey 16, the end of the tube 8 a is stirred during assembly in the passage 12 a. As a result, the tube end of the tube 8a again aligns with the passage 12a, whereby a probability of damage is reduced.

Die im Zusammenhang mit dem Sammelkasten 3 und dem Boden 5 gemachten Ausführungen gelten analog auch für den Sammelkasten 4 und dessen Boden 6.The statements made in connection with the collecting box 3 and the bottom 5 analogously apply to the collecting box 4 and the bottom of the sixth

Die Erhebung 16 kann einfach in ein Stanzwerkzeug integriert werden. Eine wechselseitige Verwendung von Ausführungen des Bodens 5, 6 mit und ohne Erhebung ist ohne Anpassungsmaßnahme in jedem Blockfertiger möglich. Ein Blockfertiger stellt ein Werkzeug dar, in welchem der Wärmeübertrager 1 als Ganzes gefertigt wird. Somit werden die Fertigungsabläufe bei der Blockherstellung nicht verändert.The survey 16 can be easily integrated into a punching tool. A reciprocal use of designs of the bottom 5, 6 with and without survey is possible without adjustment measure in each block paver. A block paver represents a tool in which the heat exchanger 1 is manufactured as a whole. Thus, the manufacturing processes are not changed in the block production.

Die Figur 5 zeigt einen Endbereich des erfindungsgemäßen Bodens 5, bei welchem umlaufend eine rinnenförmige Nut als Umlauf 14 ausgebildet ist, in welchem der nicht dargestellte Sammelkasten mit seinem Sammelkastenfuß unter Zwischenlegung einer nicht dargestellten Dichtung eingesetzt werden kann. Dieser Umlauf 14 ist als nach außen gekehrtes u-förmiges Hohlteil gebildet, wobei sich mittig der Schmalseiten ein entgegengesetzt gekrümmter Bereich 20 sich an das u-förmige Hohlteil 14 unmittelbar anschließt und als Aufnahme beispielsweise für ein Seitenteil dienen kann. Der Umlauf 14 ist durch einen aufgeweiteten Bereich 15 von den Rohröffnungen bzw. von den Durchzügen 12a getrennt. Ausgehend von diesem rinnenförmigen Umlauf 14 erstreckt sich eine Erhebung 16 bis zu dem Durchzug 12a, welcher das erste, direkt der Stirnseite 13 gegenüber liegende Rohr 8a aufnimmt.The FIG. 5 shows an end portion of the bottom 5 of the invention, in which circumferentially a groove-shaped groove is formed as a circulation 14, in which the collection box, not shown, can be used with its Sammelkastenfuß with the interposition of a seal, not shown. This circulation 14 is formed as an outwardly swept U-shaped hollow part, wherein in the middle of the narrow sides of an oppositely curved portion 20 immediately adjoins the U-shaped hollow part 14 and as For example, recording can serve for a side panel. The circulation 14 is separated by a widened region 15 from the tube openings or from the passages 12a. Starting from this channel-shaped circulation 14 extends a survey 16 to the passage 12 a, which receives the first, directly opposite the end face 13 opposite tube 8 a.

Claims (9)

  1. A heat exchanger, comprising a block (2) which has fins (9) and tubes (8) and is arranged between a first collecting tank (3), in particular for introducing a medium to be cooled, and a second collecting tank (4), in particular for discharging said medium, wherein each collecting tank (3, 4) is closed off by a base (5, 6) which has rim holes (12) for receiving the tubes (8), and a channel-shaped circulating means (14) for receiving the collecting tank (3, 4) extends along the edge of the base (5, 6), characterised in that the base (5, 6) has a raised contact region (16) on at least one end side (13) for the tube (8a, 8b) directly opposite the end side (13).
  2. The heat exchanger as claimed in claim 1, characterised in that the contact region (16) is designed rising from the channel-shaped circulating means (14) to a rim hole (12a) receiving the tube (8a), wherein the contact region (16) preferably spans an expanded region (15) between the rear side of the channel-shaped circulating means (14) and the rim hole (12a).
  3. The heat exchanger as claimed in claim 2, characterised in that the contact region (16) is locally delimited.
  4. The heat exchanger as claimed in claim 2 or 3, characterised in that the contact region is designed as an elevation (16) of the base (5, 6), said elevation elevating in the direction of that side of the base (5, 6) which faces away from the collecting tank (3, 4).
  5. The heat exchanger as claimed in claim 4, characterised in that the elevation (16) is arranged approximately centrally on the end side (13) of the base (5, 6).
  6. The heat exchanger as claimed in claim 4 or 5, characterised in that the elevation (16) is soldered to the rim hole (12a) receiving the tube (8a) which is directly opposite the end side (13).
  7. The heat exchanger as claimed in at least one of the preceding claims, characterised in that the elevation (16) is designed as an embossed portion punched out of the base (5, 6).
  8. The heat exchanger as claimed in claim 2, characterised in that the contact region (16) is formed by the rim hole (12a) which receives the tube (8a) opposite the end side (13) and which is drawn as far as the channel-shaped circulating means (14) in the base (5, 6).
  9. The heat exchanger as claimed in at least one of the preceding claims, characterised in that the tube (8a) is folded.
EP12787406.3A 2011-10-28 2012-10-26 Heat exchanger Not-in-force EP2771636B1 (en)

Applications Claiming Priority (2)

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DE102011085479A DE102011085479A1 (en) 2011-10-28 2011-10-28 Heat exchanger
PCT/EP2012/071322 WO2013060882A1 (en) 2011-10-28 2012-10-26 Heat exchanger

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EP2771636A1 EP2771636A1 (en) 2014-09-03
EP2771636B1 true EP2771636B1 (en) 2016-01-06

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US (1) US9810484B2 (en)
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KR (1) KR20140088582A (en)
CN (1) CN103890530B (en)
BR (1) BR112014010083A8 (en)
DE (1) DE102011085479A1 (en)
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DE102011085479A1 (en) 2013-05-02
US9810484B2 (en) 2017-11-07
CN103890530A (en) 2014-06-25
BR112014010083A8 (en) 2017-06-20
KR20140088582A (en) 2014-07-10
WO2013060882A1 (en) 2013-05-02
BR112014010083A2 (en) 2017-06-13
EP2771636A1 (en) 2014-09-03
CN103890530B (en) 2016-08-17
US20140262187A1 (en) 2014-09-18

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