EP1702190B1 - Heat exchanger and production method therefor - Google Patents

Heat exchanger and production method therefor Download PDF

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Publication number
EP1702190B1
EP1702190B1 EP04804740A EP04804740A EP1702190B1 EP 1702190 B1 EP1702190 B1 EP 1702190B1 EP 04804740 A EP04804740 A EP 04804740A EP 04804740 A EP04804740 A EP 04804740A EP 1702190 B1 EP1702190 B1 EP 1702190B1
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EP
European Patent Office
Prior art keywords
heat exchanger
tube
shaped part
channel
carrier plate
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EP04804740A
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German (de)
French (fr)
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EP1702190A1 (en
Inventor
Detlef Cieslik
Thorsten Kusnik
Harald Stickel
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BSH Hausgeraete GmbH
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BSH Bosch und Siemens Hausgeraete GmbH
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—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 bent, e.g. in a serpentine or zig-zag
    • F28D1/0477—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 bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
    • F28D1/0478—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 bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag the conduits having a non-circular cross-section
    • 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
    • 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
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • 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
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/02—Details of evaporators
    • F25B2339/022—Evaporators constructed from a pair of plates forming a space in which is located a refrigerant carrying coil
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0068—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • F28D2021/0071—Evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/02—Fastening; Joining by using bonding materials; by embedding elements in particular materials
    • F28F2275/025—Fastening; Joining by using bonding materials; by embedding elements in particular materials by using adhesives

Definitions

  • the present invention relates to a heat exchanger according to the preamble of claim 8, in particular an evaporator for a refrigerator, such as a household refrigerator or freezer, and a method for its preparation according to claim 1.
  • a heat exchanger which is composed of a support plate, a meandering over the support plate extending tube for a refrigerant and a heat insulating layer of a Bitumenzusammen .
  • the bituminous layer is first placed in the form of a plate on the arrangement of carrier plate and refrigerant tube and then formed by means of a stamp, in which a meandering groove is formed according to the course of the refrigerant tube on the base plate.
  • the refrigerant pipe is placed on the carrier plate exactly according to the course of the trough of the punch. If the tube does not come to lie centrally in the groove, different thicknesses of the bitumen layer on opposite sides of the tube, or the bitumen layer breaks when formed on the base plate and the refrigerant pipe in places. If the position deviation is so strong that the tube is no longer inside the gutter, it will be squeezed flat when the punch is pressed and the vaporizer will be destroyed.
  • the stroke of the stamp must at least be so large that the bituminous layer in the area between the meanders of the refrigerant pipe comes into contact with the carrier plate. If the stroke is greater than is strictly necessary, the bitumen material is forced into the gussets between the elliptical cross-section tubing and the carrier plate.
  • the known method is therefore not useful if instead of the bituminous plate, a plate made of a highly effective heat-insulating material is to be formed, since the penetration of such a material in the gussets would affect the heat exchange between the refrigerant tube and the base plate and thus the efficiency of the evaporator.
  • Object of the present invention is to provide a method for producing a heat exchanger, which allows the production of high-quality heat exchangers, even with low demands on the manufacturing tolerances, or to provide a heat exchange, which can be produced by such a method.
  • the object is achieved in that the molded article of heat-insulating Material is provided in advance with a running on the surface, preformed channel in which the tube is placed before the support plate is attached to the surface. Even if the angles of curvature at the various bends of the tube deviate slightly from corresponding angles of the channel, the tube can still be easily inserted into the channel by slight elastic bending. A crushing of the tube between the molding and the support plate is thus excluded.
  • the thickness of the tube perpendicular to the surface of the molding is initially greater than the depth of the groove formed therein, so that the tube, even if it rests against the bottom of the groove, protrudes a little way out of this. If now the molding and the support plate are pressed against each other to bring at least parts of the surface of the molding with the support plate in contact, the tube is simultaneously flattened between the support plate and the molding, whereby the heat transfer between the plate and the tube in desired Way improved.
  • the molded article can be easily and economically produced by expanding a plastic material in a mold.
  • a plastic material to be expanded in particular polystyrene and polyurethane into consideration.
  • the expanded material In order to achieve a good insulation effect, a high pore content in the expanded material is desirable; On the other hand, the expanded material must have sufficient strength for flattening the refrigerant pipe.
  • a density of 30 to 50 g / dm 3 preferably about 40 g / dm 3 , has proved suitable.
  • the molded part and the carrier plate are preferably connected by gluing, in particular by means of an adhesive film.
  • This adhesive film is preferably attached to the molded part, since alternatively attached to the support plate adhesive film would have to be recessed at each of the areas touched by the refrigerant pipe areas of the support plate in order not to affect the heat transfer between the pipe and the support plate.
  • Fig. 1 a perspective view of the components of an evaporator according to the invention prior to their assembly;
  • Fig. 2 a section through a fully assembled inventive evaporator.
  • Fig. 1 is a support plate of the evaporator made of aluminum with 1, a refrigerant tube with 2 and a molded part of polystyrene foam with 3.
  • the refrigerant pipe 2 has a suction pipe port 4 provided for connection to an inlet of a compressor for drawing off evaporated refrigerant from the pipe 2, and a capillary 5 extending inside the suction pipe port and provided for liquid refrigerant from a condenser to be supplied.
  • the free end of the capillary 5 is caulked at a constriction 6 of the refrigerant tube 2. From here, the refrigerant flows through the meandering tube 2 to a connection point 7, where it opens again on the suction line 4.
  • the molded part 3 is a plate made of polystyrene foam, in whose upper side 8 a groove 9 is formed, the course of which corresponds to the shape of the refrigerant pipe 2.
  • the depth of the channel 9 is slightly less than the diameter of the prior to joining the individual components 1, 2, 3 of the evaporator in the cross section still circular refrigerant tube 2.
  • the density of the polystyrene foam is 40 g / dm. 3
  • a fast-adhering adhesive is applied to the upper side 8 of the molded part 3.
  • the evaporator is assembled by first the refrigerant pipe 2 is inserted into the groove 9 of the molded part 3. Initially, the carrier plate 1 placed on the molded part 3 and the refrigerant tube 2 contacts only the refrigerant tube 2. The arrangement thus created is compressed between two punches of a (not shown) press. The strength of the material of the molded part 3 and the wall thickness of the refrigerant tube 2 are coordinated so that a plastic deformation of the tube cross-section occurs before the top 8 comes into contact with the support plate 1. It can, as in Fig. 2 shown, come in areas of the molding 3 at the bottom of the channel 9 to a compression of the foam material.
  • the force of the press is determined so that the molding 3 can not be immersed on its entire surface, but the movement of the stamp comes to a halt when the top 8 touches the support plate 1.
  • An intrusion of the material of the molding 3 in the gusset 11 between the refrigerant pipe 2 and the support plate 1 is thus excluded in the example shown.
  • the gussets 11 may also be filled with the material of the molded part 3.
  • a temperature sensor 12 for monitoring the temperature of the evaporator can be inserted into a groove 13 extending from the edge of the molding 3 between two parallel sections of the groove 9 before or after the carrier plate 1 and the molding 3 are glued together.
  • the support plate 1 and the molded part 3 are fastened to one another instead of with the aid of an applied adhesive with the aid of an adhesive film.
  • This adhesive film is applied to the top 8 of the molded part 3 before inserting the refrigerant tube 2 into the channel 9.
  • the refrigerant pipe 2 is then placed on the adhesive film above the groove 9 and pressed into the channel 9, wherein the adhesive film depending on the material condition along the groove 9 can be torn or stretched.
  • the flattening of the refrigerant pipe 2 and the sticking together of the carrier plate 1 and the molded part 3 take place in a single operation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Separation By Low-Temperature Treatments (AREA)

Abstract

A heat exchanger is produced from a supporting plate (1), a shaped part (3), which is made of a heat-insulating material and has a surface (8) with a channel (9) running along this surface (8), and from a tube (2), which is formed according to the course of the channel (9) and which is provided for a heat transfer fluid. The tube (2) is placed inside the channel (9), and the supporting plate (1) is fastened to the surface (8) provided with the tube (2).

Description

Die vorliegende Erfindung betrifft einen Wärmetauschen gemäß Oberbegriff des Anspruchs 8, insbesondere einen Verdampfer für ein Kältegerät, wie etwa einen Haushaltskühl- oder -gefrierschrank, sowie ein Verfahren zu dessen Herstellung gemäß Anspruch 1.The present invention relates to a heat exchanger according to the preamble of claim 8, in particular an evaporator for a refrigerator, such as a household refrigerator or freezer, and a method for its preparation according to claim 1.

Aus DE 102 18 826 A1 ist ein Wärmetauscher bekannt, der aus einer Trägerplatte, einem sich mäanderförmig über die Trägerplatte erstreckenden Rohr für ein Kältemittel und einer wärmeisolierenden Schicht aus einer Bitumenzusammensetzung aufgebaut ist. Die Bitumenschicht wird zunächst in Form einer Platte auf die Anordnung aus Trägerplatte und Kältemittelrohr aufgelegt und dann mit Hilfe eines Stempels angeformt, in welchem eine mäanderförmige Rinne entsprechend dem Verlauf des Kältemittelrohrs auf der Basisplatte gebildet ist.Out DE 102 18 826 A1 a heat exchanger is known, which is composed of a support plate, a meandering over the support plate extending tube for a refrigerant and a heat insulating layer of a Bitumenzusammensetzung. The bituminous layer is first placed in the form of a plate on the arrangement of carrier plate and refrigerant tube and then formed by means of a stamp, in which a meandering groove is formed according to the course of the refrigerant tube on the base plate.

Bei der Herstellung des Verdampfers muss streng darauf geachtet werden, dass das Kältemittelrohr auf der Trägerplatte exakt entsprechend dem Verlauf der Rinne des Stempels platziert wird. Wenn das Rohr nicht mittig in der Rinne zu liegen kommt, ergeben sich unterschiedliche Dicken der Bitumenschicht an einander gegenüberliegenden Seiten des Rohrs, oder die Bitumenschicht reißt beim Anformen an die Basisplatte und das Kältemittelrohr stellenweise auf. Wenn die Positionsabweichung so stark ist, dass das Rohr nicht mehr innerhalb der Rinne liegt, so wird es beim Andrücken des Stempels flach gequetscht und der Verdampfer so zerstört.During the manufacture of the evaporator, care must be taken to ensure that the refrigerant pipe is placed on the carrier plate exactly according to the course of the trough of the punch. If the tube does not come to lie centrally in the groove, different thicknesses of the bitumen layer on opposite sides of the tube, or the bitumen layer breaks when formed on the base plate and the refrigerant pipe in places. If the position deviation is so strong that the tube is no longer inside the gutter, it will be squeezed flat when the punch is pressed and the vaporizer will be destroyed.

Der Hub des Stempels muss wenigstens so groß sein, dass die Bitumenschicht im Bereich zwischen den Mäandern des Kältemittelrohrs mit der Trägerplatte in Kontakt kommt. Wenn der Hub größer als hierfür unbedingt notwendig ist, wird das Bitumenmaterial in die Zwickel zwischen der im Querschnitt elliptischen Rohrleitung und der Trägerplatte getrieben. Das bekannte Verfahren ist daher nicht brauchbar, wenn anstelle der Bitumenplatte eine Platte aus einem hochwirksam wärmeisolierenden Material angeformt werden soll, da das Eindringen eines solchen Materials in die Zwickel den Wärmeaustausch zwischen dem Kältemittelrohr und der Basisplatte und damit die Effizienz des Verdampfers beeinträchtigen würde.The stroke of the stamp must at least be so large that the bituminous layer in the area between the meanders of the refrigerant pipe comes into contact with the carrier plate. If the stroke is greater than is strictly necessary, the bitumen material is forced into the gussets between the elliptical cross-section tubing and the carrier plate. The known method is therefore not useful if instead of the bituminous plate, a plate made of a highly effective heat-insulating material is to be formed, since the penetration of such a material in the gussets would affect the heat exchange between the refrigerant tube and the base plate and thus the efficiency of the evaporator.

Aufgabe der vorliegenden Erfindung ist, ein Verfahren zum Herstellen eines Wärmetauschers, das die Herstellung hochwertiger Wärmetauscher auch bei geringen Anforderungen an die Herstellungstoleranzen erlaubt, bzw. einen Wärmetausche anzugeben, der mit einem solchen Verfahren herstellbar ist.Object of the present invention is to provide a method for producing a heat exchanger, which allows the production of high-quality heat exchangers, even with low demands on the manufacturing tolerances, or to provide a heat exchange, which can be produced by such a method.

Die Aufgabe wird erfindungsgemäße dadurch gelöst, dass das Formteil aus wärmeisolierendem Material von vornherein mit einer auf dessen Oberfläche verlaufenden, vorgeformten Rinne bereitgestellt wird, in welcher das Rohr platziert wird, bevor die Trägerplatte an der Oberfläche befestigt wird. Auch wenn die Krümmungswinkel an den diversen Biegungen des Rohrs geringfügig von entsprechenden Winkeln der Rinne abweichen, kann das Rohr durch leichtes elastisches Biegen noch ohne Schwierigkeiten in die Rinne eingefügt werden. Ein Zerquetschen des Rohrs zwischen dem Formteil und der Trägerplatte ist so ausgeschlossen.The object is achieved in that the molded article of heat-insulating Material is provided in advance with a running on the surface, preformed channel in which the tube is placed before the support plate is attached to the surface. Even if the angles of curvature at the various bends of the tube deviate slightly from corresponding angles of the channel, the tube can still be easily inserted into the channel by slight elastic bending. A crushing of the tube between the molding and the support plate is thus excluded.

Vorzugsweise ist die Dicke des Rohrs senkrecht zu der Oberfläche des Formteils zunächst größer als die Tiefe der darin gebildeten Rinne, so dass das Rohr, auch wenn es am Boden der Rinne anliegt, ein Stück weit aus dieser herausragt. Wenn nun das Formteil und die Trägerplatte gegeneinander gedrückt werden, um wenigstens Teile der Oberfläche des Formteils mit der Trägerplatte in Kontakt zu bringen, wird gleichzeitig das Rohr zwischen der Trägerplatte und dem Formteil flachgedrückt, wodurch sich der Wärmeübergang zwischen der Platte und dem Rohr in erwünschter Weise verbessert.Preferably, the thickness of the tube perpendicular to the surface of the molding is initially greater than the depth of the groove formed therein, so that the tube, even if it rests against the bottom of the groove, protrudes a little way out of this. If now the molding and the support plate are pressed against each other to bring at least parts of the surface of the molding with the support plate in contact, the tube is simultaneously flattened between the support plate and the molding, whereby the heat transfer between the plate and the tube in desired Way improved.

Das Formteil kann einfach und wirtschaftlich durch Expandieren eines Kunststoffmaterials in einem Formwerkzeug hergestellt werden. Als zu expandierendes Kunststoffmaterial kommen insbesondere Polystyrol und Polyurethan in Betracht.The molded article can be easily and economically produced by expanding a plastic material in a mold. As a plastic material to be expanded in particular polystyrene and polyurethane into consideration.

Um eine gute Isolationswirkung zu erzielen, ist ein hoher Porenanteil im expandierten Material wünschenswert; andererseits muss das expandierte Material eine zum Flachdrücken des Kältemittelrohrs ausreichende Festigkeit aufweisen. Bei einem Formteil aus Polystyrol hat sich eine Dichte von 30 bis 50 g/dm 3, vorzugsweise ca. 40 g/dm3, als geeignet erwiesen.In order to achieve a good insulation effect, a high pore content in the expanded material is desirable; On the other hand, the expanded material must have sufficient strength for flattening the refrigerant pipe. In a molded article made of polystyrene, a density of 30 to 50 g / dm 3 , preferably about 40 g / dm 3 , has proved suitable.

Das Formteil und die Trägerplatte sind vorzugsweise durch Kleben, insbesondere mit Hilfe einer Klebefolie verbunden. Diese Klebefolie ist vorzugsweise am Formteil angebracht, da alternativ dazu an der Trägerplatte angebrachte Klebefolie jeweils an den vom Kältemittelrohr berührten Bereichen der Trägerplatte ausgespart sein müsste, um den Wärmeübergang zwischen Rohr und Trägerplatte nicht zu beeinträchtigen.The molded part and the carrier plate are preferably connected by gluing, in particular by means of an adhesive film. This adhesive film is preferably attached to the molded part, since alternatively attached to the support plate adhesive film would have to be recessed at each of the areas touched by the refrigerant pipe areas of the support plate in order not to affect the heat transfer between the pipe and the support plate.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels mit Bezug auf die beigefügten Figuren. Es zeigen:Further features and advantages of the invention will become apparent from the following description of an embodiment with reference to the accompanying figures. Show it:

Fig. 1 eine perspektivische Ansicht der Komponenten eines erfindungsgemäßen Verdampfers vor ihrem Zusammenbau; und Fig. 1 a perspective view of the components of an evaporator according to the invention prior to their assembly; and

Fig. 2 einen Schnitt durch einen fertig zusammengebauten erfindungsgemäßen Verdampfer. Fig. 2 a section through a fully assembled inventive evaporator.

In Fig. 1 ist eine Trägerplatte des Verdampfers aus Aluminium mit 1, ein Kältemittelrohr mit 2 und ein Formteil aus Polystyrolschaum mit 3 bezeichnet. Das Kältemittelrohr 2 hat einen Saugleitungsanschluss 4, der zum Anschließen an einen Einlass eines Verdichters vorgesehen ist, um verdampftes Kältemittel aus dem Rohr 2 abzuziehen, und eine Kapillare 5, die sich im Innern des Saugleitungsanschlusses erstreckt und vorgesehen ist, um flüssiges Kältemittel von einem Verflüssiger her zuzuführen. Das freie Ende der Kapillare 5 ist an einer Engstelle 6 des Kältemittelrohrs 2 verstemmt. Von hier aus durchfließt das Kältemittel das mäanderartig verlaufende Rohr 2 bis zu einer Anschlussstelle 7, wo es wieder auf dem Saugleitungsanschluss 4 mündet.In Fig. 1 is a support plate of the evaporator made of aluminum with 1, a refrigerant tube with 2 and a molded part of polystyrene foam with 3. The refrigerant pipe 2 has a suction pipe port 4 provided for connection to an inlet of a compressor for drawing off evaporated refrigerant from the pipe 2, and a capillary 5 extending inside the suction pipe port and provided for liquid refrigerant from a condenser to be supplied. The free end of the capillary 5 is caulked at a constriction 6 of the refrigerant tube 2. From here, the refrigerant flows through the meandering tube 2 to a connection point 7, where it opens again on the suction line 4.

Das Formteil 3 ist eine Platte aus Polystyrolschaum, in deren Oberseite 8 eine Rinne 9 gebildet ist, deren Verlauf der Gestalt des Kältemittelrohrs 2 entspricht. Die Tiefe der Rinne 9 ist etwas geringer als der Durchmesser des vor dem Zusammenfügen der einzelnen Komponenten 1, 2, 3 des Verdampfers im Querschnitt noch kreisrunden Kältemittelrohrs 2. Die Dichte des Polystyrolsschaums beträgt 40 g/dm3. Ein schnell haftender Klebstoff ist auf die Oberseite 8 des Formteils 3 aufgetragen.The molded part 3 is a plate made of polystyrene foam, in whose upper side 8 a groove 9 is formed, the course of which corresponds to the shape of the refrigerant pipe 2. The depth of the channel 9 is slightly less than the diameter of the prior to joining the individual components 1, 2, 3 of the evaporator in the cross section still circular refrigerant tube 2. The density of the polystyrene foam is 40 g / dm. 3 A fast-adhering adhesive is applied to the upper side 8 of the molded part 3.

Der Verdampfer wird zusammengefügt, indem zunächst das Kältemittelrohr 2 in die Rinne 9 des Formteils 3 eingefügt wird. Die auf das Formteil 3 und das Kältemittelrohr 2 aufgelegte Trägerplatte 1 berührt zunächst nur das Kältemittelrohr2. Die so geschaffene Anordnung wird zwischen zwei Stempeln einer (nicht dargestellten) Presse zusammengedrückt. Die Festigkeit des Materials des Formteils 3 und die Wandstärke des Kältemittelrohrs 2 sind so aufeinander abgestimmt, dass eine plastische Verformung des Rohrquerschnitts auftritt, bevor die Oberseite 8 mit der Trägerplatte 1 in Kontakt kommt. Dabei kann es, wie in Fig. 2 dargestellt, in Bereichen des Formteils 3 am Boden der Rinne 9 zu einer Verdichtung des Schaummaterials kommen. Die Kraft der Presse ist jedoch so festgelegt, dass das Formteil 3 nicht auf seiner ganzen Fläche getaucht werden kann, sondern die Bewegung der Stempel zum Erliegen kommt, wenn die Oberseite 8 die Trägerplatte 1 berührt. Ein Eindringen des Materials des Formteils 3 in die Zwickel 11 zwischen dem Kältemittelrohr 2 und der Trägerplatte 1 ist bei dem gezeigten Beispiel so ausgeschlossen. Je nach Wahl der Dichte für das geschäumte Polystyrol-Formteil 3 können die Zwickel 11 jedoch auch mit dem Material des Formteils 3 verfüllt sein.The evaporator is assembled by first the refrigerant pipe 2 is inserted into the groove 9 of the molded part 3. Initially, the carrier plate 1 placed on the molded part 3 and the refrigerant tube 2 contacts only the refrigerant tube 2. The arrangement thus created is compressed between two punches of a (not shown) press. The strength of the material of the molded part 3 and the wall thickness of the refrigerant tube 2 are coordinated so that a plastic deformation of the tube cross-section occurs before the top 8 comes into contact with the support plate 1. It can, as in Fig. 2 shown, come in areas of the molding 3 at the bottom of the channel 9 to a compression of the foam material. However, the force of the press is determined so that the molding 3 can not be immersed on its entire surface, but the movement of the stamp comes to a halt when the top 8 touches the support plate 1. An intrusion of the material of the molding 3 in the gusset 11 between the refrigerant pipe 2 and the support plate 1 is thus excluded in the example shown. Depending on the choice of density for the foamed polystyrene molded part 3, however, the gussets 11 may also be filled with the material of the molded part 3.

Wenn die Bewegung der Presse aufhört, bleibt im Allgemeinen eine elastische Restverformung des Kältemittelrohrs 2 zurück, so dass dieses zwischen der Trägerplatte 1 und dem Formteil 3 unter Druck steht, die Klebstoffschicht während zwischen der Oberseite 8 und der Trägerplatte 1 zugbelastet ist. Im Laufe der Alterung des Verdampfers können diese elastischen Spannungen durch eine fortschreitende Stauchung der Bereiche 10 angebaut werden.In general, when the movement of the press ceases, elastic residual deformation of the refrigerant pipe 2 remains back so that it is pressurized between the carrier plate 1 and the molded article 3, the adhesive layer during is tensioned between the top 8 and the support plate 1. During the aging of the evaporator, these elastic stresses can be grown by progressive compression of the regions 10.

Ein Temperaturfühler 12 zur Überwachung der Temperatur des Verdampfers kann in eine sich vom Rand des Formteils 3 aus zwischen zwei parallele Abschnitte der Rinne 9 erstreckende Rille 13 vor oder nach dem Zusammenkleben von Trägerplatte 1 und Formteil 3 eingefügt werden.A temperature sensor 12 for monitoring the temperature of the evaporator can be inserted into a groove 13 extending from the edge of the molding 3 between two parallel sections of the groove 9 before or after the carrier plate 1 and the molding 3 are glued together.

Einer zweiten Ausgestaltung zufolge werden Trägerplatte 1 und Formteil 3 anstatt mit Hilfe eines aufgetragenen Klebers mit Hilfe einer Klebefolie aneinander befestigt. Diese Klebefolie wird vor dem Einfügen des Kältemittelrohrs 2 in die Rinne 9 auf die Oberseite 8 des Formteils 3 aufgebracht. Das Kältemittelrohr 2 wird dann auf die Klebefolie oberhalb der Rinne 9 aufgelegt und in die Rinne 9 hineingedrückt, wobei die Klebefolie je nach Materialbeschaffenheit entlang der Rinne 9 reißen oder gedehnt werden kann. Wie bei der zuvor betrachteten Ausgestaltung finden das Abflachen des Kältemittelrohrs 2 und das Aneinanderkleben von Trägerplatte 1 und Formteil 3 in einem gleichen Arbeitsgang statt.According to a second embodiment, the support plate 1 and the molded part 3 are fastened to one another instead of with the aid of an applied adhesive with the aid of an adhesive film. This adhesive film is applied to the top 8 of the molded part 3 before inserting the refrigerant tube 2 into the channel 9. The refrigerant pipe 2 is then placed on the adhesive film above the groove 9 and pressed into the channel 9, wherein the adhesive film depending on the material condition along the groove 9 can be torn or stretched. As in the previously considered embodiment, the flattening of the refrigerant pipe 2 and the sticking together of the carrier plate 1 and the molded part 3 take place in a single operation.

Claims (18)

  1. Method of producing a heat exchanger comprising the steps:
    a) providing a carrier plate (1), a shaped part (3) of a thermally insulating material, which has a surface (8) with a channel (9) running on this surface (8), and a tube (2), which is formed in correspondence with the course of the channel (9), for a heat carrier fluid,
    b) placing the tube (2) in the channel (9) and
    c) fastening the carrier plate (1) to the surface (8).
  2. Method according to claim 1, characterised in that the thickness of the tube (2) perpendicularly to the surface (8) is greater than the depth of the channel (9) and that the tube (2) is pressed flat between the carrier plate (1) and the shaped part (3) until at least parts of the surface (8) contact the carrier plate (1).
  3. Method according to claim 1 or 2, characterised in that the shaped part (3) is produced by expanding a plastics material.
  4. Method according to claim 3, characterised in that the plastics material is polystyrol.
  5. Method according to claim 4, characterised in that the polystyrol is expanded to a density of 30 to 50 g/dm3.
  6. Method according to any one of the preceding claims, characterised in that the fastening is effected by gluing.
  7. Method according to claim 6, characterised in that the surface (8) of the shaped part (3) is provided with an adhesive film prior to the pressing together.
  8. Heat exchanger comprising a carrier plate (1), a shaped part (3) of a thermally insulating material, in which a channel (9) - in which a tube (2) for a heat carrier fluid extends - is formed in the surface (8) facing the carrier plate (1), characterised in that the channel (9) is pre-formed at the shaped part (3) and the tube (2) is inserted into the channel (9).
  9. Heat exchanger according to claim 8, characterised in that the tube (2) is flattened at least in sections and bears by the flattening against the carrier plate (1).
  10. Heat exchanger according to claim 9, characterised in that the tube (2) is surrounded as far as the flattening by the thermally insulating material of the shaped part (3).
  11. Heat exchanger according to any one of claims 8 to 10, characterised in that the tube (2) is loaded in pressure between the carrier plate (1) and the shaped part (3) in the direction of the depth of the channel (9).
  12. Heat exchanger according to claim 8 or 10, characterised in that the shaped part (3) is formed from an expanded plastics material.
  13. Heat exchanger according to claim 12, characterised in that the expanded plastics material is compressed at the base of the channel (9).
  14. Heat exchanger according to claim 12 or 13, characterised in that the plastics material is polystyrol.
  15. Heat exchanger according to claim 14, characterised in that the expanded polystyrol has a density of 30 to 50 g/dm3.
  16. Heat exchanger according to any one of claims 8 to 15, characterised in that the carrier plate (1) and shaped part (3) are glued.
  17. Heat exchanger according to claim 16, characterised by an adhesive film between the carrier plate (1) and the shaped part (3).
  18. Heat exchanger according to any one of claims 8 to 17, characterised by a groove (13), which is formed at the surface (8) of the shaped part (3), for a temperature sensor (12).
EP04804740A 2003-12-23 2004-12-09 Heat exchanger and production method therefor Not-in-force EP1702190B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10360900A DE10360900A1 (en) 2003-12-23 2003-12-23 Heat exchanger and manufacturing method therefor
PCT/EP2004/053365 WO2005066564A1 (en) 2003-12-23 2004-12-09 Heat exchanger and production method therefor

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EP1702190A1 EP1702190A1 (en) 2006-09-20
EP1702190B1 true EP1702190B1 (en) 2009-09-23

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EP04804740A Not-in-force EP1702190B1 (en) 2003-12-23 2004-12-09 Heat exchanger and production method therefor

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EP (1) EP1702190B1 (en)
CN (1) CN100533035C (en)
AT (1) ATE443838T1 (en)
DE (2) DE10360900A1 (en)
ES (1) ES2332912T3 (en)
RU (1) RU2350872C2 (en)
WO (1) WO2005066564A1 (en)

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CN100504261C (en) * 2005-09-22 2009-06-24 海尔集团公司 Low-temperature cabinet, low-temperature cabinet vaporizer fixing strip and fitting method
DE102008043920A1 (en) * 2008-11-20 2010-05-27 BSH Bosch und Siemens Hausgeräte GmbH Condensation dryer with a heat pump and method for its operation
DE102010028526A1 (en) * 2010-05-04 2011-11-10 BSH Bosch und Siemens Hausgeräte GmbH Refrigerating appliance and evaporator for it
RU2472089C1 (en) * 2011-07-19 2013-01-10 Александр Олегович Заика Slot heat exchanger
DE102013204744A1 (en) * 2013-03-18 2014-09-18 Behr Gmbh & Co. Kg Layer heat transfer device and method for producing a layer heat transfer device
DE102014217075A1 (en) * 2014-08-27 2016-03-03 Mahle International Gmbh Method for producing a tempering device and tempering device
CN104266413B (en) * 2014-10-11 2017-01-11 合肥美的电冰箱有限公司 Evaporator for refrigeration device and refrigeration device with evaporator
CN104776648B (en) * 2015-03-17 2018-01-30 宁波日樱电器有限公司 A kind of high-efficiency evaporator that can prevent inner container of icebox from ftractureing
CN105470222B (en) * 2015-12-25 2018-09-18 珠海格力电器股份有限公司 Cooling device for electronic component
WO2018187496A2 (en) 2017-04-04 2018-10-11 Lung Cancer Proteomics, Llc Plasma based protein profiling for early stage lung cancer prognosis
DE102017219528B4 (en) * 2017-11-02 2019-10-02 Audi Ag Method for producing a battery tray with a cooling device
CN108562176A (en) * 2018-05-18 2018-09-21 广东美的制冷设备有限公司 Heat exchanger and heat transmission equipment

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US4040476A (en) * 1975-07-09 1977-08-09 The Johnson Rubber Company Keel cooler with spiral fluted tubes
DE9318388U1 (en) * 1993-12-01 1994-01-27 Hewing GmbH, 48607 Ochtrup Heat exchanger
DE10218826B4 (en) * 2002-04-26 2007-03-22 BSH Bosch und Siemens Hausgeräte GmbH Heat exchanger for a refrigeration device and method for producing a heat exchanger

Also Published As

Publication number Publication date
RU2006120461A (en) 2008-01-27
DE10360900A1 (en) 2005-07-21
CN1898517A (en) 2007-01-17
EP1702190A1 (en) 2006-09-20
ES2332912T3 (en) 2010-02-15
WO2005066564A1 (en) 2005-07-21
DE502004010134D1 (en) 2009-11-05
CN100533035C (en) 2009-08-26
RU2350872C2 (en) 2009-03-27
ATE443838T1 (en) 2009-10-15

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