EP1840494A2 - Heat exchanger profile - Google Patents

Heat exchanger profile Download PDF

Info

Publication number
EP1840494A2
EP1840494A2 EP07005994A EP07005994A EP1840494A2 EP 1840494 A2 EP1840494 A2 EP 1840494A2 EP 07005994 A EP07005994 A EP 07005994A EP 07005994 A EP07005994 A EP 07005994A EP 1840494 A2 EP1840494 A2 EP 1840494A2
Authority
EP
European Patent Office
Prior art keywords
profile
flat tubes
web
heat exchanger
composite
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07005994A
Other languages
German (de)
French (fr)
Other versions
EP1840494A3 (en
Inventor
Norbert William Sucke
Reiner Breindl
Ismail Boyraz
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.)
Erbsloeh Aluminium GmbH
Original Assignee
Erbsloeh Aluminium GmbH
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
Priority claimed from DE200610014462 external-priority patent/DE102006014462A1/en
Priority claimed from DE200620005013 external-priority patent/DE202006005013U1/en
Application filed by Erbsloeh Aluminium GmbH filed Critical Erbsloeh Aluminium GmbH
Publication of EP1840494A2 publication Critical patent/EP1840494A2/en
Publication of EP1840494A3 publication Critical patent/EP1840494A3/en
Withdrawn legal-status Critical Current

Links

Images

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
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/08—Making wire, bars, tubes
    • B21C23/085—Making tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • 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
    • F28D1/05391—Assemblies of conduits connected to common headers, e.g. core type radiators with multiple rows of conduits or with multi-channel conduits combined with a particular flow pattern, e.g. multi-row multi-stage radiators
    • 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
    • F28F9/04—Arrangements for sealing elements into header boxes or end plates
    • F28F9/16—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling
    • F28F9/18—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding
    • F28F9/182—Arrangements for sealing elements into header boxes or end plates by permanent joints, e.g. by rolling by welding the heat-exchange conduits having ends with a particular shape, e.g. deformed; the heat-exchange conduits or end plates having supplementary joining means, e.g. abutments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2309/00—Gas cycle refrigeration machines
    • F25B2309/06—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide
    • F25B2309/061—Compression machines, plants or systems characterised by the refrigerant being carbon dioxide with cycle highest pressure above the supercritical pressure

Definitions

  • the invention relates to a heat exchanger profile made of aluminum or an aluminum alloy, in particular for a CO 2 evaporator, and to an evaporator with such a heat exchanger profile.
  • evaporators are widely used in air conditioning systems of motor vehicles.
  • An air conditioning system generally has a compressor, a condenser, an expansion device and an evaporator, wherein these components are usually arranged successively and connected to each other via a fluid-conducting tubes to a circuit.
  • refrigerants such as R134a had proven successful.
  • these refrigerants are harmful to the environment because of their CFC components and should be replaced by less problematic refrigerants.
  • An alternative fluid for the refrigerant circuit of an automotive air conditioning system is, for example, carbon dioxide (CO 2 ).
  • CO 2 carbon dioxide
  • a known flat tube evaporator according to DE 10 2005 004 284 A1 comprises a collecting box, which is divided in the longitudinal direction at least into two chambers and in the bottom of which the ends of the individual flat tubes are inserted. Slats are arranged between the individual flat tubes so that a good heat exchange can take place between the refrigerant flowing through the evaporator and a fluid flowing on the outside of the evaporator.
  • the disadvantage of such an arrangement is that each flat tube individually inserted into a designated opening in the bottom of the header tank, positioned and connected to the collection box.
  • the document DE 101 50 213 A1 discloses such an extruded composite profile of aluminum or an aluminum alloy.
  • This composite profile has two juxtaposed flat tubes, which are connected to one another in the longitudinal direction of the composite profile on their narrow sides via webs. In this bridge can be made for better heat exchange punching.
  • this web is removed at the end. This regional separation of the web at the ends of the composite profile must be very precise.
  • the object of the invention is to provide an improved heat exchanger profile available, which can be produced in a simple manner and meets the high requirements of a CO 2 evaporator.
  • This object is achieved by a heat exchanger profile with the features of claim 1.
  • This heat exchanger profile made of aluminum or a Aluminum alloy is, like the known integrally extruded composite profile, produced with at least two flat tubes, which are connected to one another at their narrow sides via a web. These two flat tubes may have the same or different outer and inner geometries, preferably flat tubes are used with the same height.
  • the flat tubes are connected to one another in the longitudinal direction of the composite profile via a relatively thick web. This web is preferably provided with a small width.
  • the wall thickness of the web is reduced by a one-sided or two-sided narrowing, for example a notch. The wall thickness is thus less than the wall thickness of the web at this point of constriction and it is also less than the wall thickness of the adjacent flat tube.
  • a composite profile can be easily produced by extrusion and cut to the intended length of the evaporator profiles.
  • Such a composite profile may have flat tubes with one or more continuous channels, wherein preferably the channels are formed by perpendicular to the broad sides of the flat tubes arranged channel walls.
  • the size and number of channels for belonging to a composite profile flat tubes can be chosen the same or different.
  • the heat exchanger profile according to the invention can be used in an advantageous and simple manner for high-pressure air conditioning systems, in particular for a CO 2 evaporator.
  • the web is partially removed at the two ends of a composite profile, so that a groove is formed which is sufficiently large that the ends of the flat tubes can be inserted into openings provided the collector profile.
  • This means that the web is removed in a length which corresponds at least to the insertion depth of the flat tubes in the collector profile.
  • the separation of the web or a part of the web is simple but exactly possible because the constrictions of the web represent breaking points for the separation process and thus no It must be ensured that the separating tool between the web and the flat tube engages in order to possibly damage the side wall of the flat tube.
  • the side wall of the flat tube remains unaffected and there is no chip at the radius of this side wall.
  • the flat tubes retain their geometry and can be inserted directly into the openings of the collector profile.
  • the composite profile is provided on its outer surfaces with a solder and / or flux coating, preferably on the broad sides of the flat tubes, in order to achieve a good connection with the arranged between the flat tubes fins during brazing.
  • a brazed joint between the collector profile and the flat tubes can also be achieved, brazing preferably being carried out between the flat tubes and lamellas and between the flat tubes and the collector profile in one production step.
  • a CO 2 evaporators with the inventive heat exchanger profiles is easy to manufacture so.
  • the simultaneous installation of two flat tubes and the simple but precise processing of the ends of the composite profiles saves production time.
  • a known extruded composite profile 1 is shown.
  • the composite profile is preferably made of aluminum or aluminum alloy.
  • This integrally extruded composite profile 1 consists of two flat tubes 2, 3, in this case with the same external and internal geometry.
  • the flat tubes 2, 3 are arranged side by side and connected to one another at its narrow side via a web 4.
  • Such a composite profile 1 is obtained by extrusion, wherein the extruded from the extruder strand is fed to a separator, where the extruded profile is divided into desired lengths of the composite profile 1.
  • the web 4 is to be removed in regions at the end of the respective composite profile 1 so that a groove 7 is formed between the flat tubes 2 and 3 at the end.
  • Fig. 1 the desired separation seam 5 is shown for such a groove 7 in dashed line.
  • the separation is achieved with a punching or cutting tool.
  • a cutting tool directly meets this separation seam 5 and the separation cut is made precisely. A slight deviation from the intended separation seam 5 leads to rework or rejects. If, in fact, the separation cut is made to the left of the separation seam 5, the wall of the flat profile 2 is weakened and the applicable pressure for this profile 2 is reduced, so that it may no longer be usable for a CO 2 evaporator. If the actual operating pressure in the evaporator exceeds this value, the profile may burst.
  • the separation cut is made to the right of the intended separation seam 5, then a remainder of the web remains at the radius of the profiled section 2 or 3, which must be removed so that the end face 8 or 9 of the flat tube 2 or 3 into the appropriate opening on the collector profile can be introduced.
  • a burr usually remains at the radius of the flat profile 2 or 3. This burr must be removed because a CO 2 evaporator is a sensitive system that is very sensitive to contamination. Chips can damage the compressor or clog valves or nozzles. The post-processing to remove the burrs can lead to bending of the narrow side of the flat tubes.
  • This is preferably made of aluminum or an aluminum alloy and consists of the flat tubes 12, 13, in this case, the same outer and inner geometry, namely four channels, which are formed by three channel walls 16.
  • the flat tubes 12, 13 are arranged side by side and connected to one another at their narrow side via a web 14.
  • the web 14 has at the junction with the flat tubes 12 and 13, ie immediately adjacent to these flat tubes 12, 13 a constriction 15.
  • the constriction 15 is generated by a notch on both sides.
  • the thickness w1 of the constriction 15 is less than the thickness w3 of the web 14, and the thickness w1 of the constriction 15 is less than the thickness w2 of the constriction 15
  • the constriction 15 thus represents a so-called predetermined breaking point and it is possible to selectively separate the web 14 in the region of constriction 15 of the flat profile 12 and on the other side in the region of constriction 15 from the flat profile 13.
  • the constriction 15 allows a chipless detachment of the web 14, ie a separation that requires no post-processing.
  • the provision of the constrictions 15 has the advantage that the width b of the web 14 can be selected to be very small.
  • This web 14 serves as an assembly aid, namely for the introduction of two flat tubes 12, 13 simultaneously in the collector profile 20, but otherwise does not contribute to the operation of the CO 2 - evaporator.
  • the width b of the web 14 can be chosen so small that the width b of the wall thickness of the partition wall 24 of the collector 20 corresponds.
  • the web 14 has approximately the cross section of a wire. The choice of such a small width b of the web 4 is not possible with composite profiles 1 according to the prior art, since there must be sufficient space between the flat tubes 2, 3 for the application of the cutting tool.
  • the detachment of the web 14 can take place over the entire extent of the composite profile 10, for example, to separate a flat tube from the composite profile, for example, to share a composite profile with four flat tubes in two composite profiles with two flat tubes.
  • the web 14 can also be separated out in regions, preferably at the ends of the composite profile 10 and there in a length which corresponds at least to the insertion depth t of the flat tubes 12, 13 in the collector tube 20.
  • FIG. 4 shows a connection of the composite profile 10 with a collector profile 20.
  • the collector profile 20 is divided into two chambers 22, 23 by a partition wall 24.
  • the end 18 of the flat tube 12 of the composite profile 10 is inserted into the chamber 22 at an insertion depth t.
  • the flat tube 13 is inserted with its end 19 into the chamber 23. Therefore Furthermore, it is visible that the web 14 connecting the flat tubes 12, 13 is taken out at the end, so that a groove 17 is created, which has made it possible to mount the composite profile 10 on the collecting profile 20.
  • the vaporizer further includes fins, not shown in FIG. 4, which are arranged above and below the composite profile 10, ie, of the flat tubes 12, 13, and are connected to the flat tubes 12, 13 via a brazed joint.
  • the composite profile 10 is preferably provided during manufacture with a solder and flux coating.
  • the connection between the composite profile 10 and the collector profile 20 is achieved via a brazed joint, wherein the good positioning of the composite profile 10 in the collector profile 20 ensures optimal soldering.
  • Such an evaporator is used in particular for a motor vehicle air conditioning system, wherein the cross-sectional shape of the collector profile 20 is independent of the use of the heat exchanger profiles according to the invention, as far as the openings 21 in the collector profile 20 adjacent to each other and the cross sections of the openings 21 and the cross sections of the flat tubes 12, 13 to each other are coordinated.

Landscapes

  • 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)

Abstract

Heat exchange section in Al or Al alloy, especially for high pressure climatization components, consisting of a one piece extruded composite profile (10) with at least two flat tubes (12,13) of the same or different internal and external geometry and connected by a bridge (14). In the longitudinal direction of the composite profile the bridge (14) is directly adjacent to the side wall (11) of the flat tube (12) which has a narrowing (15) of thickness less than that of bridge (14) and less than that of sidewall (11) : An independent claim is included for an evaporator.

Description

Die Erfindung betrifft ein Wärmetauscherprofil aus Aluminium oder einer Aluminiumlegierung, insbesondere für einen CO2-Verdampfer, sowie einen Verdampfer mit einem solchen Wärmetauscherprofil. Derartige Verdampfer finden breite Anwendung bei Klimaanlagen von Kraftfahrzeugen.The invention relates to a heat exchanger profile made of aluminum or an aluminum alloy, in particular for a CO 2 evaporator, and to an evaporator with such a heat exchanger profile. Such evaporators are widely used in air conditioning systems of motor vehicles.

Eine Klimaanlage besitzt im Allgemeinen einen Verdichter, einen Verflüssiger, eine Expansionsvorrichtung und einen Verdampfer, wobei diese Bestandteile üblicherweise nacheinander angeordnet und über fluidleitende Rohre zu einem Kreislauf miteinander verbunden sind. Bei bisherigen Kraftfahrzeugklimatisierungsanlagen hatten sich Kältemittel, wie R134a, bewährt. Diese Kältemittel sind wegen ihrer FCKW-Bestandteile jedoch umweltschädlich und sollen durch weniger problematische Kältemittel ersetzt werden. Ein alternatives Fluid für den Kältemittelkreislauf einer Kraftfahrzeugklimaanlage ist beispielsweise Kohlendioxid (CO2). Dieses Kohlendioxid stellt an eine Klimatisierungsanlage jedoch höhere Anforderungen, da ein höherer Betriebsdruck erforderlich ist und damit die einzelnen Bestandteile der Anlage auf höhere Berstdrücke ausgelegt werden müssen.An air conditioning system generally has a compressor, a condenser, an expansion device and an evaporator, wherein these components are usually arranged successively and connected to each other via a fluid-conducting tubes to a circuit. In previous motor vehicle air conditioning systems, refrigerants such as R134a had proven successful. However, these refrigerants are harmful to the environment because of their CFC components and should be replaced by less problematic refrigerants. An alternative fluid for the refrigerant circuit of an automotive air conditioning system is, for example, carbon dioxide (CO 2 ). However, this carbon dioxide places higher demands on an air conditioning system, since a higher operating pressure is required and thus the individual components of the system must be designed for higher bursting pressures.

Ein bekannter Flachrohrverdampfer gemäß DE 10 2005 004 284 A1 umfasst einen Sammelkasten, der in Längsrichtung wenigstens in zwei Kammern unterteilt ist und in dessen Boden die Enden der einzelnen Flachrohre eingeführt sind. Zwischen den einzelnen Flachrohren sind Lamellen angeordnet, so dass ein guter Wärmeaustausch zwischen dem durch den Verdampfer fließenden Kältemittel und einem außenseitig des Verdampfers strömenden Fluid erfolgen kann. Nachteilig bei einer solchen Anordnung ist, dass jedes Flachrohr einzeln in eine vorgesehene Öffnung im Boden des Sammelkastens eingeführt, positioniert und mit dem Sammelkasten verbunden werden muss.A known flat tube evaporator according to DE 10 2005 004 284 A1 comprises a collecting box, which is divided in the longitudinal direction at least into two chambers and in the bottom of which the ends of the individual flat tubes are inserted. Slats are arranged between the individual flat tubes so that a good heat exchange can take place between the refrigerant flowing through the evaporator and a fluid flowing on the outside of the evaporator. The disadvantage of such an arrangement is that each flat tube individually inserted into a designated opening in the bottom of the header tank, positioned and connected to the collection box.

Ein geringerer Zeitaufwand bei der Montage des Verdampfers wird bei der Verwendung von Verbundprofilen erzielt. Das Dokument DE 101 50 213 A1 offenbart ein solches stranggepresstes Verbundprofil aus Aluminium bzw. einer Aluminiumlegierung. Dieses Verbundprofil weist zwei nebeneinander angeordnete Flachrohre auf, die in Längsrichtung des Verbundprofils an ihren Schmalseiten über Stege miteinander verbunden sind. In diesem Steg können zum besseren Wärmeaustausch Ausstanzungen vorgenommen werden. Um die zwei zu dem Verbundprofil gehörenden Flachrohre gleichzeitig in vorgesehene Öffnungen eines Sammelkastens einführen zu können, wird endseitig dieser Steg entfernt. Dieses bereichsweise Heraustrennen des Steges an den Enden des Verbundprofils muss sehr präzise erfolgen. Zum einen darf nicht unnötig viel Material am Radius der Flachprofile verbleiben, denn dieses Material muss vor Einführung der Flachprofile in den Sammelkasten entfernt werden, da die Größe der Öffnungen im Sammlerprofil an die Größe der Flachprofile angepasst ist. Eine solche Gratentfernung birgt das Risiko, dass sich das Flachprofil während dieser Bearbeitung verbiegt und seine Geometrie verändert. Auch dies verhindert ein unproblematisches Einführen der Flachrohre in die vorgesehenen Öffnungen. Wird andererseits beim Heraustrennen des Steges zuviel Material entfernt, führt dies zu einer Wandstärkenschwächung des Flachrohres und damit bei den hohen Betriebsdrücken eines CO2-Verdampfers zu einem erhöhten Berstrisiko.Less time spent installing the evaporator is achieved using composite profiles. The document DE 101 50 213 A1 discloses such an extruded composite profile of aluminum or an aluminum alloy. This composite profile has two juxtaposed flat tubes, which are connected to one another in the longitudinal direction of the composite profile on their narrow sides via webs. In this bridge can be made for better heat exchange punching. To be able to simultaneously introduce the two flat tubes belonging to the composite profile into intended openings of a collecting tank, this web is removed at the end. This regional separation of the web at the ends of the composite profile must be very precise. On the one hand, not unnecessarily much material must remain on the radius of the flat profiles, because this material must be removed before the introduction of the flat profiles in the collecting box, since the size of the openings in the collector profile is adapted to the size of the flat profiles. Such burr removal entails the risk that the flat profile bends during this machining and changes its geometry. This also prevents unproblematic insertion of the flat tubes in the openings provided. If, on the other hand, too much material is removed during the removal of the web, this leads to a weakening of the wall thickness of the flat tube and thus to an increased risk of bursting at the high operating pressures of a CO 2 evaporator.

Aufgabe der Erfindung ist es, ein verbessertes Wärmetauscherprofil zur Verfügung zu stellen, das auf einfache Weise hergestellt werden kann und den hohen Anforderungen eines CO2-Verdampfers genügt.The object of the invention is to provide an improved heat exchanger profile available, which can be produced in a simple manner and meets the high requirements of a CO 2 evaporator.

Diese Aufgabe wird durch ein Wärmetauscherprofil mit den Merkmalen des Anspruchs 1 gelöst. Dieses Wärmetauscherprofil aus Aluminium oder einer Aluminiumlegierung wird, wie das bekannte einstückig stranggepresste Verbundprofil, mit mindestens zwei Flachrohren, die an ihren Schmalseiten über einen Steg miteinander verbunden sind, hergestellt. Diese zwei Flachrohre können gleiche oder unterschiedliche Außen- und Innengeometrien aufweisen, vorzugsweise werden Flachrohre mit gleicher Höhe verwendet. Die Flachrohre sind in Längsrichtung des Verbundprofils über einen verhältnismäßig dicken Steg miteinander verbunden. Dieser Steg wird vorzugsweise mit geringer Breite vorgesehen. An der Verbindungsstelle zwischen Steg und Flachrohr ist die Wanddicke des Steges durch eine einseitig oder beidseitige Einengung, beispielsweise eine Kerbe, reduziert. Die Wanddicke ist an dieser Stelle der Einengung damit geringer als die Wanddicke des Steges und sie ist auch geringer als die Wanddicke des benachbarten Flachrohres.This object is achieved by a heat exchanger profile with the features of claim 1. This heat exchanger profile made of aluminum or a Aluminum alloy is, like the known integrally extruded composite profile, produced with at least two flat tubes, which are connected to one another at their narrow sides via a web. These two flat tubes may have the same or different outer and inner geometries, preferably flat tubes are used with the same height. The flat tubes are connected to one another in the longitudinal direction of the composite profile via a relatively thick web. This web is preferably provided with a small width. At the junction between web and flat tube, the wall thickness of the web is reduced by a one-sided or two-sided narrowing, for example a notch. The wall thickness is thus less than the wall thickness of the web at this point of constriction and it is also less than the wall thickness of the adjacent flat tube.

Ein Verbundprofil lässt sich auf einfache Weise durch Strangpressen herstellen und auf die vorgesehene Länge der Verdampferprofile ablängen. Ein solches Verbundprofil kann Flachrohre mit einem oder mehreren durchlaufenden Kanälen aufweisen, wobei vorzugsweise die Kanäle durch senkrecht zu den Breitseiten der Flachrohre anordnete Kanalwände gebildet werden. Die Größe und Anzahl der Kanäle für die zu einem Verbundprofil gehörenden Flachrohre kann gleich oder unterschiedlich gewählt werden.A composite profile can be easily produced by extrusion and cut to the intended length of the evaporator profiles. Such a composite profile may have flat tubes with one or more continuous channels, wherein preferably the channels are formed by perpendicular to the broad sides of the flat tubes arranged channel walls. The size and number of channels for belonging to a composite profile flat tubes can be chosen the same or different.

Das erfindungsgemäße Wärmetauscherprofil kann in vorteilhafter und einfacher Weise für Hochdruckklimatisierungsanlagen, insbesondere für einen CO2 Verdampfer verwendet werden. Dazu wird an den beiden Enden eines Verbundprofils der Steg bereichsweise herausgetrennt, so dass eine Nut entsteht, die ausreichend groß ist, dass die Enden der Flachrohre in vorgesehene Öffnungen des Sammlerprofils eingeführt werden können. Dies bedeutet, dass der Steg in einer Länge entfernt wird, die mindestens der Einstecktiefe der Flachrohre im Sammlerprofil entspricht. Das Heraustrennen des Steges oder eines Teiles des Steges ist einfach aber exakt möglich, da die Einengungen des Steges Sollbruchstellen für den Trennvorgang darstellen und damit kein Trennwerkzeug zwischen Steg und Flachrohr angreifen muss, dass die Seitenwand des Flachrohres eventuell beschädigen könnte. Beim Trennvorgang bleibt die Seitenwand des Flachrohres unbeeinflusst und es verbleibt kein Span am Radius dieser Seitenwand. Dadurch kann auch auf eine dem Trennvorgang eventuell nachfolgende Bearbeitung der Trennstellen verzichtet werden. Die Flachrohre behalten ihre Geometrie und können unmittelbar in die Öffnungen des Sammlerprofils eingeführt werden.The heat exchanger profile according to the invention can be used in an advantageous and simple manner for high-pressure air conditioning systems, in particular for a CO 2 evaporator. For this purpose, the web is partially removed at the two ends of a composite profile, so that a groove is formed which is sufficiently large that the ends of the flat tubes can be inserted into openings provided the collector profile. This means that the web is removed in a length which corresponds at least to the insertion depth of the flat tubes in the collector profile. The separation of the web or a part of the web is simple but exactly possible because the constrictions of the web represent breaking points for the separation process and thus no It must be ensured that the separating tool between the web and the flat tube engages in order to possibly damage the side wall of the flat tube. During the separation process, the side wall of the flat tube remains unaffected and there is no chip at the radius of this side wall. As a result, it is also possible to dispense with any subsequent processing of the separating points which may be necessary for the separating process. The flat tubes retain their geometry and can be inserted directly into the openings of the collector profile.

Bei einer bevorzugten Ausführung ist das Verbundprofil an seinen äußeren Oberflächen mit einer Lot- und/ oder Flussmittelbeschichtung versehen, vorzugsweise an den Breitseiten der Flachrohre, um beim Hartlöten eine gute Verbindung mit den zwischen den Flachrohren angeordneten Lamellen zu erzielen. Des Weiteren kann bei einem Sammlerprofil aus Aluminium oder einer Aluminiumlegierung auch eine Hartlötverbindung zwischen dem Sammlerprofil und den Flachrohren erreicht werden, wobei vorzugsweise das Hartlöten zwischen den Flachrohren und Lamellen sowie zwischen den Flachrohren und dem Sammlerprofil in einem Produktionsschritt vorgenommen wird.In a preferred embodiment, the composite profile is provided on its outer surfaces with a solder and / or flux coating, preferably on the broad sides of the flat tubes, in order to achieve a good connection with the arranged between the flat tubes fins during brazing. Furthermore, in the case of a collector profile made of aluminum or an aluminum alloy, a brazed joint between the collector profile and the flat tubes can also be achieved, brazing preferably being carried out between the flat tubes and lamellas and between the flat tubes and the collector profile in one production step.

Ein CO2-Verdampfer mit den erfindungsgemäßen Wärmetauscherprofilen lässt sich somit einfach herstellen. Durch die gleichzeitige Montage von zwei Flachrohren und durch die einfache aber präzise Bearbeitung der Enden der Verbundprofile wird Produktionszeit eingespart. Andererseits gibt es weniger Ausschuss bei der Vorbereitung der Verbundprofile für die Montage, nämlich beim bestimmungsgemäßen sauberen, nämlich gratlosen Heraustrennen des Steges.A CO 2 evaporators with the inventive heat exchanger profiles is easy to manufacture so. The simultaneous installation of two flat tubes and the simple but precise processing of the ends of the composite profiles saves production time. On the other hand, there is less waste in the preparation of the composite profiles for assembly, namely the intended clean, namely flawless cutting out of the web.

Weitere Einzelheiten der Erfindung sind der nachfolgenden Beschreibung eines Ausführungsbeispiels der Erfindung anhand von Zeichnungen zu entnehmen. Es zeigen:

Fig. 1
eine perspektivische Ansicht eines stranggepressten Verbundprofils gemäß Stand der Technik,
Fig. 2
eine perspektivische Ansicht eines erfindungsgemäßen stranggepressten Wärmetauscherprofils,
Fig. 3
eine vergrößerte Querschnittsansicht aus dem erfindungsgemäßen Wärmetauscherprofil gemäß Fig. 2,
Fig. 4
einen Ausschnitt eines Verdampfers.
Further details of the invention can be taken from the following description of an embodiment of the invention with reference to drawings. Show it:
Fig. 1
a perspective view of an extruded composite profile according to the prior art,
Fig. 2
a perspective view of an extruded heat exchanger profile according to the invention,
Fig. 3
an enlarged cross-sectional view of the heat exchanger profile according to the invention shown in FIG. 2,
Fig. 4
a section of an evaporator.

In Fig. 1 ist ein bekanntes stranggepresstes Verbundprofil 1 gezeigt. Das Verbundprofil ist vorzugsweise aus Aluminium oder Aluminiumlegierung hergestellt. Dieses einstückig stranggepresste Verbundprofil 1 besteht aus zwei Flachrohren 2, 3, in diesem Fall mit gleicher Außen- und Innengeometrie. Die Flachrohre 2, 3 sind nebeneinander angeordnet und an ihrer einen Schmalseite über einen Steg 4 miteinander verbunden. Ein solches Verbundprofil 1 wird durch Strangpressen erhalten, wobei der aus der Strangpresse austretende Strang einer Trennvorrichtung zugeführt wird, wo der Profilstrang in gewünschte Längen des Verbundprofils 1 geteilt wird. Zum Einführen der Enden der Flachrohre 2, 3 in ein Sammlerprofil ist am Ende des jeweiligen Verbundprofils 1 der Steg 4 bereichsweise herauszutrennen, so dass eine Nut 7 endseitig zwischen den Flachrohre 2 und 3 entsteht. In der Fig. 1 ist die gewünschte Trennungsnaht 5 für eine solche Nut 7 in gestrichelter Linie eingezeichnet. Die Trennung wird mit einem Stanz- oder Schneidwerkzeug erzielt. Wichtig bei diesem Verbundprofil 1 nach dem Stand der Technik ist, dass ein Trennwerkzeug unmittelbar diese Trennungsnaht 5 trifft und der Trennungsschnitt präzise ausgeführt wird. Eine geringfügige Abweichung von der beabsichtigten Trennungsnaht 5 führt zu Nachbearbeitungen oder Ausschussteilen. Wird nämlich der Trennungsschnitt links von der Trennungsnaht 5 durchgeführt, wird die Wandung des Flachprofils 2 geschwächt und damit der anwendbare Druck für dieses Profil 2 verringert, so dass dieses möglicherweise nicht mehr für einen CO2-Verdampfer einsetzbar ist. Übersteigt der tatsächliche Betriebsdruck im Verdampfer nämlich diesen Wert, so kann das Profil bersten. Wird andererseits der Trennungsschnitt rechts von der beabsichtigten Trennungsnaht 5 durchgeführt, so verbleibt ein Rest des Steges am Radius des Fachprofils 2 oder 3, der entfernt werden muss, damit die Stirnseite 8 bzw. 9 des Flachrohres 2 bzw. 3 in die passende Öffnung am Sammlerprofil eingeführt werden kann. Selbst bei einer exakten Ausführung des Trennungsschnittes verbleibt in der Regel ein Grat am Radius des Flachprofils 2 bzw. 3. Dieser Grat muss entfernt werden, da ein CO2-Verdampfer ein sensibles System darstellt, das sehr empfindlich auf Verunreinigungen reagiert. Späne können den Kompressor schädigen oder Ventile bzw. Düsen verstopfen. Die Nachbearbeitung zur Entfernung der Grate kann zu Verbiegungen der Schmalseite der Flachrohre führen.In Fig. 1, a known extruded composite profile 1 is shown. The composite profile is preferably made of aluminum or aluminum alloy. This integrally extruded composite profile 1 consists of two flat tubes 2, 3, in this case with the same external and internal geometry. The flat tubes 2, 3 are arranged side by side and connected to one another at its narrow side via a web 4. Such a composite profile 1 is obtained by extrusion, wherein the extruded from the extruder strand is fed to a separator, where the extruded profile is divided into desired lengths of the composite profile 1. To insert the ends of the flat tubes 2, 3 into a collector profile, the web 4 is to be removed in regions at the end of the respective composite profile 1 so that a groove 7 is formed between the flat tubes 2 and 3 at the end. In Fig. 1, the desired separation seam 5 is shown for such a groove 7 in dashed line. The separation is achieved with a punching or cutting tool. Important in this composite profile 1 according to the prior art is that a cutting tool directly meets this separation seam 5 and the separation cut is made precisely. A slight deviation from the intended separation seam 5 leads to rework or rejects. If, in fact, the separation cut is made to the left of the separation seam 5, the wall of the flat profile 2 is weakened and the applicable pressure for this profile 2 is reduced, so that it may no longer be usable for a CO 2 evaporator. If the actual operating pressure in the evaporator exceeds this value, the profile may burst. If, on the other hand, the separation cut is made to the right of the intended separation seam 5, then a remainder of the web remains at the radius of the profiled section 2 or 3, which must be removed so that the end face 8 or 9 of the flat tube 2 or 3 into the appropriate opening on the collector profile can be introduced. Even with an exact version of the separation cut, a burr usually remains at the radius of the flat profile 2 or 3. This burr must be removed because a CO 2 evaporator is a sensitive system that is very sensitive to contamination. Chips can damage the compressor or clog valves or nozzles. The post-processing to remove the burrs can lead to bending of the narrow side of the flat tubes.

Fig. 2 zeigt ein erfindungsgemäßes stranggepresstes Verbundprofil 10. Dieses ist vorzugsweise aus Aluminium oder einer Aluminiumlegierung hergestellt und besteht aus den Flachrohren 12, 13, in diesem Fall gleicher Außen- und Innengeometrie, nämlich aus vier Kanälen, die durch drei Kanalwände 16 gebildet sind. Die Flachrohre 12, 13 sind nebeneinander angeordnet und an ihrer Schmalseite über einen Steg 14 miteinander verbunden. Der Steg 14 besitzt an der Verbindungsstelle zu den Flachrohren 12 und 13, also unmittelbar benachbart zu diesen Flachrohren 12, 13 eine Einengung 15. In Fig. 2 ist die Einengung 15 durch eine beidseitige Kerbe erzeugt. Diese beidseitigen Kerben verlaufen in gleicher Tiefe in Längsrichtung des Verbundprofils 10. Sie werden bereits beim Strangpressen in dieser Weise erzeugt. Wie besser aus Fig. 3 zu ersehen, ist die Dicke w1 der Einengung 15 geringer als die Dicke w3 des Steges 14 und die Dicke w1 der Einengung 15 ist geringer als die Dicke w2 der anliegenden Seitenwandung 11 des Flachrohrs 12. Die Einengung 15 stellt damit eine sogenannte Sollbruchstelle dar und es ist möglich, den Steg 14 gezielt im Bereich der Einengung 15 von dem Flachprofil 12 und auf der anderen Seite im Bereich der Einengung 15 vom Flachprofil 13 abzutrennen. Die Einengung 15 ermöglicht ein spanloses Herauslösen des Steges 14, d.h. ein Abtrennen, das keiner Nachbearbeitung bedarf. Des Weiteren hat das Vorsehen der Einengungen 15 den Vorteil, dass die Breite b des Steges 14 sehr klein gewählt werden kann. Dieser Steg 14 dient als Montagehilfe, nämlich zum Einführen von gleichzeitig zwei Flachrohren 12, 13 in das Sammlerprofil 20, trägt ansonsten jedoch nicht zur Funktionsweise des CO2- Verdampfers bei. Bei dem erfindungsgemäßen Wärmetauscherprofil 10 kann die Breite b des Steges 14 so klein gewählt werden, dass die Breite b der Wanddicke der Trennwand 24 des Sammlers 20 entspricht. In diesem Fall hat der Steg 14 etwa den Querschnitt eines Drahtes. Die Wahl einer so geringen Breite b des Steges 4 ist bei Verbundprofilen 1 nach dem Stand der Technik nicht möglich, da dort zwischen den Flachrohren 2, 3 ausreichend Platz für die Anwendung des Trennwerkzeuges vorhanden sein muß.This is preferably made of aluminum or an aluminum alloy and consists of the flat tubes 12, 13, in this case, the same outer and inner geometry, namely four channels, which are formed by three channel walls 16. The flat tubes 12, 13 are arranged side by side and connected to one another at their narrow side via a web 14. The web 14 has at the junction with the flat tubes 12 and 13, ie immediately adjacent to these flat tubes 12, 13 a constriction 15. In Fig. 2, the constriction 15 is generated by a notch on both sides. These two-sided notches extend at the same depth in the longitudinal direction of the composite profile 10. They are already produced during extrusion in this manner. As better seen in Fig. 3, the thickness w1 of the constriction 15 is less than the thickness w3 of the web 14, and the thickness w1 of the constriction 15 is less than the thickness w2 of the constriction 15 The constriction 15 thus represents a so-called predetermined breaking point and it is possible to selectively separate the web 14 in the region of constriction 15 of the flat profile 12 and on the other side in the region of constriction 15 from the flat profile 13. The constriction 15 allows a chipless detachment of the web 14, ie a separation that requires no post-processing. Furthermore, the provision of the constrictions 15 has the advantage that the width b of the web 14 can be selected to be very small. This web 14 serves as an assembly aid, namely for the introduction of two flat tubes 12, 13 simultaneously in the collector profile 20, but otherwise does not contribute to the operation of the CO 2 - evaporator. In the heat exchanger profile 10 according to the invention, the width b of the web 14 can be chosen so small that the width b of the wall thickness of the partition wall 24 of the collector 20 corresponds. In this case, the web 14 has approximately the cross section of a wire. The choice of such a small width b of the web 4 is not possible with composite profiles 1 according to the prior art, since there must be sufficient space between the flat tubes 2, 3 for the application of the cutting tool.

Das Herauslösen des Steges 14 kann über die gesamte Ausdehnung des Verbundprofils 10 erfolgen, beispielsweise um ein Flachrohr vom Verbundprofil abzutrennen, beispielsweise um ein Verbundprofil mit vier Flachrohren in zwei Verbundprofile mit zwei Flachrohren zu teilen. Der Steg 14 kann jedoch auch bereichsweise herausgetrennt werden, vorzugsweise an den Enden des Verbundprofils 10 und dort in einer Länge, die mindestens der Einstecktiefe t der Flachrohre 12, 13 im Sammlerrohr 20 entspricht.The detachment of the web 14 can take place over the entire extent of the composite profile 10, for example, to separate a flat tube from the composite profile, for example, to share a composite profile with four flat tubes in two composite profiles with two flat tubes. However, the web 14 can also be separated out in regions, preferably at the ends of the composite profile 10 and there in a length which corresponds at least to the insertion depth t of the flat tubes 12, 13 in the collector tube 20.

In Fig. 4 ist eine Verbindung des Verbundprofils 10 mit einem Sammlerprofil 20 aufgezeigt. Das Sammlerprofil 20 ist in zwei Kammern 22, 23 durch eine Trennwand 24 aufgeteilt. Das Ende 18 des Flachrohres 12 des Verbundprofils 10 ist in einer Einstecktiefe t in die Kammer 22 eingeführt. Gleichzeitig wird das Flachrohr 13 mit seinem Ende 19 in die Kammer 23 eingeführt. Dafür besitzen die Kammern 22, 23 passende Öffnungen 21. Sichtbar ist des Weiteren, dass der die Flachrohre 12, 13 verbindende Steg 14 endseitig herausgenommen ist, so dass eine Nut 17 entsteht, die die Montage des Verbundprofils 10 am Sammelprofil 20 möglich gemacht hat. Zum Verdampfer gehören des Weiteren in Fig.4 nicht gezeigte Lamellen, die oberhalb und unterhalb vom Verbundprofil 10, d.h. von den Flachrohren 12, 13, angeordnet und mit den Flachrohren 12, 13 über eine Hartlotverbindung verbunden sind. Dazu wird das Verbundprofil 10 vorzugsweise bei der Herstellung mit einer Lot- und Flußmittelbeschichtung versehen. In gleicher Weise wird die Verbindung zwischen dem Verbundprofil 10 und dem Sammlerprofil 20 über eine Hartlotverbindung erzielt, wobei die gute Positionierbarkeit des Verbundprofils 10 im Sammlerprofil 20 eine optimale Verlötung sicherstellt.FIG. 4 shows a connection of the composite profile 10 with a collector profile 20. The collector profile 20 is divided into two chambers 22, 23 by a partition wall 24. The end 18 of the flat tube 12 of the composite profile 10 is inserted into the chamber 22 at an insertion depth t. At the same time, the flat tube 13 is inserted with its end 19 into the chamber 23. Therefore Furthermore, it is visible that the web 14 connecting the flat tubes 12, 13 is taken out at the end, so that a groove 17 is created, which has made it possible to mount the composite profile 10 on the collecting profile 20. The vaporizer further includes fins, not shown in FIG. 4, which are arranged above and below the composite profile 10, ie, of the flat tubes 12, 13, and are connected to the flat tubes 12, 13 via a brazed joint. For this purpose, the composite profile 10 is preferably provided during manufacture with a solder and flux coating. In the same way, the connection between the composite profile 10 and the collector profile 20 is achieved via a brazed joint, wherein the good positioning of the composite profile 10 in the collector profile 20 ensures optimal soldering.

Ein solcher Verdampfer wird insbesondere für eine Kraftfahrzeugklimaanlage verwendet, wobei die Querschnittsform des Sammlerprofils 20 unabhängig von der Verwendung der erfindungsgemäßen Wärmetauscherprofile ist, soweit die Öffnungen 21 im Sammlerprofil 20 benachbart zueinander angeordnet und die Querschnitte der Öffnungen 21 und die Querschnitte der Flachrohre 12, 13 aufeinander abgestimmt sind.Such an evaporator is used in particular for a motor vehicle air conditioning system, wherein the cross-sectional shape of the collector profile 20 is independent of the use of the heat exchanger profiles according to the invention, as far as the openings 21 in the collector profile 20 adjacent to each other and the cross sections of the openings 21 and the cross sections of the flat tubes 12, 13 to each other are coordinated.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Verbundprofil (Stand der Technik)Composite profile (prior art)
22
Flachrohr (Stand der Technik)Flat tube (prior art)
33
Flachrohr (Stand der Technik)Flat tube (prior art)
44
Steg (Stand der Technik)Bridge (prior art)
55
Trennungsnaht (Stand der Technik)Separation seam (prior art)
66
Kanalwand (Stand der Technik)Duct wall (prior art)
77
Nut (Stand der Technik)Groove (prior art)
88th
Stirnseite (Stand der Technik)Front side (prior art)
99
Stirnseite (Stand der Technik)Front side (prior art)
1010
Verbundprofilcomposite profile
1111
Seitenwandungsidewall
1212
Flachrohrflat tube
1313
Flachrohrflat tube
1414
Stegweb
1515
Einengungconstriction
1616
Kanalwandchannel wall
1717
Nutgroove
1818
Ende von 12End of 12
1919
Ende von 13End of 13
2020
Sammlerprofilcollectors profile
2121
Öffnungopening
2222
Kammerchamber
2323
Kammerchamber
2424
Trennwandpartition wall
bb
Breite von 14Width of 14
tt
Einstecktiefeinsertion
w1w1
Dicke von 15Thickness of 15
w2w2
Dicke von 11Thickness of 11
w3w3
Dicke von 14Thickness of 14

Claims (10)

Wärmetauscherprofil aus Aluminium oder einer Aluminiumlegierung, insbesondere für Hochdruckklimatisierungskomponenten, bestehend aus einem einstückig stranggepressten Verbundprofil (10) mit mindestens zwei Flachrohren (12, 13) gleicher oder unterschiedlicher Außen- und Innengeometrie, die jeweils über einen Steg (14) miteinander verbunden sind,
dadurch gekennzeichnet, dass
in Längsrichtung des Verbundprofils (10) der Steg (14) jeweils unmittelbar benachbart zur Seitenwand (11) des Flachrohres (12) und des Flachrohres (13) eine Einengung (15) aufweist, wobei die Einengung (15) eine Dicke w1 aufweist, die sowohl geringer als die Dicke w3 des Steges (14) als auch geringer als die Dicke w2 der Seitenwand (11) ist.Heat exchanger profile of aluminum or an aluminum alloy, in particular for high-pressure air conditioning components, consisting of an integrally extruded composite profile (10) having at least two flat tubes (12, 13) of the same or different outer and inner geometry, which are each connected to each other via a web (14),
characterized in that
in the longitudinal direction of the composite profile (10) of the web (14) each immediately adjacent to the side wall (11) of the flat tube (12) and the flat tube (13) has a constriction (15), wherein the constriction (15) has a thickness w1, the both less than the thickness w3 of the web (14) and less than the thickness w2 of the side wall (11). Wärmetauscherprofil nach Anspruch 1, dadurch gekennzeichnet, dass die jeweilige Einengung (15) durch eine einseitige oder beidseitige in Längsrichtung des Verbundprofils (10) verlaufende Kerbe gebildet ist.Heat exchanger profile according to claim 1, characterized in that the respective constriction (15) by a one-sided or bilateral in the longitudinal direction of the composite profile (10) extending notch is formed. Wärmetauscherprofil nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die jeweilige Einengung (15) eine Dicke w1 aufweist, die höchstens der halben Dicke w3 des Steges (14) entspricht.Heat exchanger profile according to claim 1 or 2, characterized in that the respective constriction (15) has a thickness w1 which corresponds at most to half the thickness w3 of the web (14). Wärmetauscherprofil nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass ein Steg 14 mit einer minimale Breite b vorgesehen ist.Heat exchanger profile according to one of claims 1 to 3, characterized in that a web 14 is provided with a minimum width b. Wärmetauscherprofil nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die Flachrohre (12, 13) mehrere durchlaufende Kanäle bildende Kanalwände (16) aufweisen, wobei die Größe und Anzahl der Kanäle für die Flachrohre (12, 13) gleich oder unterschiedlich ist.Heat exchanger profile according to one of claims 1 to 4, characterized in that the flat tubes (12, 13) a plurality of continuous channels forming channel walls (16), wherein the size and number of channels for the flat tubes (12, 13) is the same or different. Wärmetauscherprofil nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Steg (14) leicht bereichsweise oder ganz heraustrennbar ist, vorzugsweise bereichsweise, wobei eine Nut (17) entsteht und im Bereich der Nut (17) eine spanlose Trennstelle an der Seitenwand (11) erzielt wird.Heat exchanger profile according to one of claims 1 to 5, characterized in that the web (14) is slightly or partially completely detachable, preferably in regions, wherein a groove (17) is formed and in the region of the groove (17) has a non-cutting separation point on the side wall (17). 11) is achieved. Wärmetauscherprofil nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Verbundprofil (10) an seinen äußeren Oberflächen, vorzugsweise an den Breitseiten der Flachrohre (12, 13), mit einer Lot- und/oder Flußmittelbeschichtung versehen ist.Heat exchanger profile according to one of claims 1 to 5, characterized in that the composite profile (10) is provided on its outer surfaces, preferably on the broad sides of the flat tubes (12, 13), with a solder and / or flux coating. Verdampfer, insbesondere für eine Kraftfahrzeugklimaanlage, mit wenigstens einem Sammlerprofil (20) und einer Anzahl parallel übereinander angeordneter Verbundprofile (10) gemäß einem der Ansprüche 1 bis 6, wobei ein Kühlmittel in entgegengesetzter Richtung durch die jeweiligen Flachrohre (12) bzw. (13) hindurchströmt und wobei die Flachrohre (12, 13) jeweils mit ihren gegenüberliegenden Enden einzeln in Öffnungen (21) unterschiedlicher Kammern (22, 23) eines Sammlerprofils (20) eingeführt sind, wozu an beiden Enden der Verbundprofile (10) der Steg (14) in einer Länge, die mindestens der Einstecktiefe (t) der Flachrohre (12, 13) entspricht, spanlos entfernt ist.Evaporator, in particular for an automotive air conditioning system, having at least one collector profile (20) and a number of parallel superimposed composite profiles (10) according to one of claims 1 to 6, wherein a coolant in the opposite direction through the respective flat tubes (12) and (13) flows through and wherein the flat tubes (12, 13) each with their opposite ends individually in openings (21) of different chambers (22, 23) of a collector profile (20) are inserted, to which at both ends of the composite profiles (10) of the web (14) in a length which corresponds at least to the insertion depth (t) of the flat tubes (12, 13) is removed without cutting. Verdampfer gemäß Anspruch 8, dadurch gekennzeichnet, dass zwischen benachbarten Breitseiten der jeweiligen Flachrohre (12, 13) Lamellen vorgesehen sind und eine Verbindung zwischen den Flachrohren (12, 13) und den Lamellen sowie zwischen den Flachrohren (12, 13) und dem jeweiligen Sammlerprofil (20) durch Hartlöten erfolgt.Vaporizer according to claim 8, characterized in that between adjacent broad sides of the respective flat tubes (12, 13) fins are provided and a connection between the flat tubes (12, 13) and the fins and between the flat tubes (12, 13) and the respective collector profile (20) by brazing. Verdampfer gemäß Anspruch 8 oder 9, dadurch gekennzeichnet, dass als Kältemittel Kohlendioxid verwendet wird.Evaporator according to claim 8 or 9, characterized in that carbon dioxide is used as the refrigerant.
EP07005994A 2006-03-29 2007-03-23 Heat exchanger profile Withdrawn EP1840494A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610014462 DE102006014462A1 (en) 2006-03-29 2006-03-29 Heat exchange section in Al or Al alloy, especially for high pressure climatization components, consisting of piece extruded composite profile useful for heat exchangers used in climatization tests gives increased heat exchange efficiency
DE200620005013 DE202006005013U1 (en) 2006-03-29 2006-03-29 Heat exchanger profile for e.g. a vaporizer used in vehicle air conditioning units comprises a bar with a constriction in the longitudinal direction of a composite profile directly next to the side wall of a flat tube

Publications (2)

Publication Number Publication Date
EP1840494A2 true EP1840494A2 (en) 2007-10-03
EP1840494A3 EP1840494A3 (en) 2011-03-16

Family

ID=38228577

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07005994A Withdrawn EP1840494A3 (en) 2006-03-29 2007-03-23 Heat exchanger profile

Country Status (1)

Country Link
EP (1) EP1840494A3 (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012028173A3 (en) * 2010-08-31 2012-05-18 Luvata Espoo Oy A method for producing a channel arrangement, a channel arrangement, use of a channel arrangement and a metal profile
WO2013116178A3 (en) * 2012-02-02 2013-10-24 Carrier Corporation Multiple tube bank heat exchanger assembly and fabrication method
WO2013116177A3 (en) * 2012-02-02 2014-01-03 Carrier Corporation Method for fabricating flattened tube finned heat exchanger
EP2738504A1 (en) 2012-11-30 2014-06-04 Carlos Quesada Saborio Tubing element for a heat exchanger means
EP2738503A1 (en) 2012-11-30 2014-06-04 Carlos Quesada Saborio Heat exchanger means
EP2738505A1 (en) 2012-11-30 2014-06-04 Carlos Quesada Saborio Tubing element for a heat exchanger means
EP2407744A3 (en) * 2010-07-14 2014-07-02 Erbslöh Aluminium GmbH Heat exchanger with corrosion protective coating, method for its manufacture and application
WO2014126634A1 (en) * 2013-02-13 2014-08-21 Carrier Corporation Multiple bank flattened tube heat exchanger
WO2015155611A2 (en) 2014-03-21 2015-10-15 Carlos Quesada Saborio Conic spiral coils
US9285147B1 (en) 2009-09-14 2016-03-15 Carlos Quesada Saborio Relocatable refrigeration system with pendulum within separator and accumulator chambers
US9581380B1 (en) 2007-07-20 2017-02-28 Carlos Quesada Saborio Flexible refrigeration platform
US9733024B2 (en) 2012-11-30 2017-08-15 Carlos Quesada Saborio Tubing element with fins for a heat exchanger
EP3428562A1 (en) * 2017-07-14 2019-01-16 Nissens A/S Heat exchanger comprising fluid tubes having a first and a second inner wall
US10247481B2 (en) 2013-01-28 2019-04-02 Carrier Corporation Multiple tube bank heat exchange unit with manifold assembly
US10337799B2 (en) 2013-11-25 2019-07-02 Carrier Corporation Dual duty microchannel heat exchanger
CN114535334A (en) * 2022-02-11 2022-05-27 扬州瑞斯乐复合金属材料有限公司 Extrusion die for duplex micro-channel flat tube

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3131155A1 (en) * 1981-08-06 1983-02-24 Julius & August Erbslöh GmbH + Co, 5600 Wuppertal Method for the production of light-alloy extruded sections
JPS61191889A (en) * 1985-02-20 1986-08-26 Matsushita Refrig Co Heat exchanger
US5186244A (en) * 1992-04-08 1993-02-16 General Motors Corporation Tube design for integral radiator/condenser
EP1167911A2 (en) * 2000-06-26 2002-01-02 Showa Denko K.K. Evaporator
DE10150213A1 (en) * 2001-10-12 2003-05-08 Erbsloeh Aluminium Gmbh Extruded profile, particularly for heat exchanger, is preferably of aluminum or aluminum alloy and comprises at least two tubes with equal or different geometry joined to each other by ribs

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3131155A1 (en) * 1981-08-06 1983-02-24 Julius & August Erbslöh GmbH + Co, 5600 Wuppertal Method for the production of light-alloy extruded sections
JPS61191889A (en) * 1985-02-20 1986-08-26 Matsushita Refrig Co Heat exchanger
US5186244A (en) * 1992-04-08 1993-02-16 General Motors Corporation Tube design for integral radiator/condenser
EP1167911A2 (en) * 2000-06-26 2002-01-02 Showa Denko K.K. Evaporator
DE10150213A1 (en) * 2001-10-12 2003-05-08 Erbsloeh Aluminium Gmbh Extruded profile, particularly for heat exchanger, is preferably of aluminum or aluminum alloy and comprises at least two tubes with equal or different geometry joined to each other by ribs

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9581380B1 (en) 2007-07-20 2017-02-28 Carlos Quesada Saborio Flexible refrigeration platform
US9285147B1 (en) 2009-09-14 2016-03-15 Carlos Quesada Saborio Relocatable refrigeration system with pendulum within separator and accumulator chambers
EP2407744A3 (en) * 2010-07-14 2014-07-02 Erbslöh Aluminium GmbH Heat exchanger with corrosion protective coating, method for its manufacture and application
WO2012028173A3 (en) * 2010-08-31 2012-05-18 Luvata Espoo Oy A method for producing a channel arrangement, a channel arrangement, use of a channel arrangement and a metal profile
CN104081147A (en) * 2012-02-02 2014-10-01 开利公司 Multiple tube bank heat exchanger assembly and fabrication method
WO2013116178A3 (en) * 2012-02-02 2013-10-24 Carrier Corporation Multiple tube bank heat exchanger assembly and fabrication method
WO2013116177A3 (en) * 2012-02-02 2014-01-03 Carrier Corporation Method for fabricating flattened tube finned heat exchanger
CN104081149B (en) * 2012-02-02 2017-05-17 开利公司 Method for fabricating flattened tube finned heat exchanger
US9901966B2 (en) 2012-02-02 2018-02-27 Carrier Corporation Method for fabricating flattened tube finned heat exchanger
CN104081149A (en) * 2012-02-02 2014-10-01 开利公司 Method for fabricating flattened tube finned heat exchanger
EP2738503A1 (en) 2012-11-30 2014-06-04 Carlos Quesada Saborio Heat exchanger means
WO2014083551A1 (en) 2012-11-30 2014-06-05 Quesada S Carlos Heat exchanger means
WO2014083552A1 (en) 2012-11-30 2014-06-05 Quesada S Carlos Tubing element for a heat exchanger means
WO2014083553A1 (en) 2012-11-30 2014-06-05 Quesada S Carlos Tubing element for a heat exchanger means
EP2738505A1 (en) 2012-11-30 2014-06-04 Carlos Quesada Saborio Tubing element for a heat exchanger means
US9874408B2 (en) 2012-11-30 2018-01-23 Carlos Quesada Saborio Heat exchangers
EP2738504A1 (en) 2012-11-30 2014-06-04 Carlos Quesada Saborio Tubing element for a heat exchanger means
US9733024B2 (en) 2012-11-30 2017-08-15 Carlos Quesada Saborio Tubing element with fins for a heat exchanger
US10247481B2 (en) 2013-01-28 2019-04-02 Carrier Corporation Multiple tube bank heat exchange unit with manifold assembly
CN104995471A (en) * 2013-02-13 2015-10-21 开利公司 Multiple bank flattened tube heat exchanger
WO2014126634A1 (en) * 2013-02-13 2014-08-21 Carrier Corporation Multiple bank flattened tube heat exchanger
US10337799B2 (en) 2013-11-25 2019-07-02 Carrier Corporation Dual duty microchannel heat exchanger
WO2015155611A2 (en) 2014-03-21 2015-10-15 Carlos Quesada Saborio Conic spiral coils
US10267565B1 (en) 2014-03-21 2019-04-23 Carlos Quesada Saborio Spiral heat exchanger coils
EP3428562A1 (en) * 2017-07-14 2019-01-16 Nissens A/S Heat exchanger comprising fluid tubes having a first and a second inner wall
WO2019012122A1 (en) * 2017-07-14 2019-01-17 Nissens A/S Heat exchanger comprising fluid tubes having a first and a second inner wall
US11578923B2 (en) 2017-07-14 2023-02-14 Nissens Cooling Solutions A/S Heat exchanger comprising fluid tubes having a first and a second inner wall
CN114535334A (en) * 2022-02-11 2022-05-27 扬州瑞斯乐复合金属材料有限公司 Extrusion die for duplex micro-channel flat tube

Also Published As

Publication number Publication date
EP1840494A3 (en) 2011-03-16

Similar Documents

Publication Publication Date Title
EP1840494A2 (en) Heat exchanger profile
EP0632245B1 (en) Water-air heat exchanger of aluminium for motor vehicles
EP0656517B1 (en) Water-air heat exchanger of aluminium for motor vehicles
EP1613916B1 (en) Heat exchanger
DE102007016050A1 (en) Wärmetaustauscher
DE102005043506A1 (en) Connection arrangement, in particular for a heat exchanger
EP0929784B1 (en) Motor vehicle flat tube heat exchanger with flat tubes retained on collars of a tube bottom
DE10150213A1 (en) Extruded profile, particularly for heat exchanger, is preferably of aluminum or aluminum alloy and comprises at least two tubes with equal or different geometry joined to each other by ribs
DE69729836T2 (en) Evaporator
DE202019105238U1 (en) Temperature control module for a battery, in particular a vehicle battery
EP0566899A1 (en) Heat exchanger, particularly evaporator
DE102006002932A1 (en) Heat exchanger tube has internal chamber extends from center of tube past location to interior surface of second narrow side
DE19933913A1 (en) Evaporator of an automotive air conditioning system
DE19723801C2 (en) heat exchangers
DE102006053702A1 (en) Heat exchanger i.e. gas cooler, for use in air conditioning system of motor vehicle, has flat pipes provided for forming heat transfer surface, and longitudinal and transverse channels that are arranged in collecting pipe
EP1725823A1 (en) Device for exchanging heat and method for the production of said device
EP1934545B1 (en) Heating body, cooling circuit, air conditioning unit for a motor vehicle air conditioning system, and air conditioning system for a motor vehicle
DE102008007937A1 (en) Two-piece header / manifold construction for a heat exchanger having flattened tubes
DE10241635A1 (en) Flat pipe heat exchanger for a heating or air-conditioning system of a motor vehicle comprises a collecting tube, and flat pipe elements connected to the collecting tube and having a torsion region
DE102006014462A1 (en) Heat exchange section in Al or Al alloy, especially for high pressure climatization components, consisting of piece extruded composite profile useful for heat exchangers used in climatization tests gives increased heat exchange efficiency
DE10000288C1 (en) Spiral heat exchanger; has spiral elements for at least two media, each with central tube and spiralled multichannel profile sealingly connected to slots in central tube and having tapered sealed end
EP1229295B1 (en) Heat exchanger core with several slotted headers
DE202006005013U1 (en) Heat exchanger profile for e.g. a vaporizer used in vehicle air conditioning units comprises a bar with a constriction in the longitudinal direction of a composite profile directly next to the side wall of a flat tube
EP1926961A1 (en) Heat exchanger, in particular gas cooler
WO2006094583A1 (en) Heat exchanger, in particular evaporator, of a motor vehicle air conditioning system

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

17P Request for examination filed

Effective date: 20110322

AKX Designation fees paid

Designated state(s): CZ DE DK FR

17Q First examination report despatched

Effective date: 20150909

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20160120