EP0918199A2 - Evaporator - Google Patents

Evaporator Download PDF

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Publication number
EP0918199A2
EP0918199A2 EP98122073A EP98122073A EP0918199A2 EP 0918199 A2 EP0918199 A2 EP 0918199A2 EP 98122073 A EP98122073 A EP 98122073A EP 98122073 A EP98122073 A EP 98122073A EP 0918199 A2 EP0918199 A2 EP 0918199A2
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EP
European Patent Office
Prior art keywords
levels
evaporator
evaporator according
refrigerant channel
planes
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.)
Granted
Application number
EP98122073A
Other languages
German (de)
French (fr)
Other versions
EP0918199A3 (en
EP0918199B1 (en
Inventor
Walter Dipl.-Ing. Holz
Wolfgang Dipl.-Ing. Becker
Hans Christian Mack
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BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Priority to SI9830568T priority Critical patent/SI0918199T1/en
Publication of EP0918199A2 publication Critical patent/EP0918199A2/en
Publication of EP0918199A3 publication Critical patent/EP0918199A3/en
Application granted granted Critical
Publication of EP0918199B1 publication Critical patent/EP0918199B1/en
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00Tubular elements; Assemblies of tubular elements
    • F28F1/10Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/14Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
    • F28F1/22Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means having portions engaging further tubular elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00Evaporators; Condensers
    • F25B39/02Evaporators
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00Heat-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
    • F28D1/02Heat-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
    • F28D1/04Heat-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
    • F28D1/047Heat-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
    • F28D1/0477Heat-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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28FDETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00Tubular elements; Assemblies of tubular elements
    • F28F1/10Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/126Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element consisting of zig-zag shaped fins
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25BREFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2339/00Details of evaporators; Details of condensers
    • F25B2339/02Details of evaporators
    • F25B2339/023Evaporators consisting of one or several sheets on one face of which is fixed a refrigerant carrying coil
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28HEAT EXCHANGE IN GENERAL
    • F28DHEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D2021/0019Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
    • F28D2021/0068Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for refrigerant cycles
    • F28D2021/0071Evaporators

Definitions

  • the invention relates to an evaporator for arrangement outside the cold space to be cooled and for forced ventilation using the cooled cold air forced into the cooling room promoting fan.
  • refrigerators and freezers designed as no-frost refrigeration units, they are used to generate refrigeration serving evaporator arranged outside their storage room and in generally designed as a so-called lamella evaporator.
  • this type of vaporizer are meandering evaporator tubes are provided, which for enlargement their heat transfer surface with arranged along their meander shape, slats made in the form of thin-walled sheets are provided.
  • the production such an evaporator is technically complex and costly, especially when the evaporator tubes consist of straight and curved individual tube pieces put together and soldered together.
  • the invention is based, an evaporator according to the preamble of the task Claim 1 to improve with simple constructive measures.
  • the evaporator by at least thermally conductive planes arranged approximately parallel one above the other which is used to connect at least one of the two levels refrigerant channel standing in heat-conducting contact with the levels.
  • the planes are formed by angling a one-piece board, in the angled State the planes are at least approximately parallel and are provided with the refrigerant channel arrangement.
  • Such an evaporator is not only particularly simple and inexpensive in terms of production technology producible but offers a high inherent rigidity due to its U-shaped cross-section, so that the handling of the evaporator in production is significantly easier is.
  • the channel pattern of the evaporator is particularly easy to change in terms of production technology and thus particularly adaptable to its cooling capacity as required, if according to a next preferred embodiment of the subject of the invention it is provided that the circuit board with the refrigerant channel arrangement arranged thereon is generated in the roll bond or with the Z bond process.
  • the refrigerant channel arrangement is designed as a pipe formed in turns which is fixed at the levels in thermally conductive contact.
  • an evaporator enables targeted Material combination between the pipeline carrying the refrigerant and the Levels representing heat exchange surfaces, which increases the heat transfer between the two Elements can be optimized in a simple manner.
  • the refrigerant channel arrangement on the evaporator is particularly expediently arranged, if after a next advantageous embodiment of the subject of the invention it is provided that the refrigerant channel arrangement on the mutually facing surfaces the levels is provided.
  • Such an embodiment variant is particularly space-saving with simple means and large heat exchange area in the evaporator is achieved, which to enlarge the heat exchange surface contributing wave profiles by their arrangement between the two levels in particularly intensive heat-conducting contact with the levels are feasible.
  • the levels forming the evaporator are particularly expedient if provided according to a next advantageous embodiment of the subject of the invention is that the two levels are at least largely flat are.
  • the purpose of this is to increase the surface area of the heat exchange surfaces is particularly favorable in terms of production technology in the manufacture of the evaporator can generate and which without additional measures by their immediate Connection to the heat exchange surfaces in the particularly intensive heat-conducting There is contact with the heat exchange surfaces. Furthermore, such a solution additional measures that can be brought into intensive heat-conducting contact by additional measures Avoid elements to increase the heat exchange area on the evaporator.
  • a particularly intensive swirling of the air flowing around the heat exchange surfaces and thus results in good heat transfer from the heat exchange surfaces to this air himself when according to a last preferred embodiment of the object the invention provides that the surface elements alternately from the levels exposed are arranged and both in the space between the two Layers as well as facing away from it.
  • FIG. 1 shows a first embodiment of a device for use in so-called no-frost refrigeration devices, such as refrigerators or freezers, suitable evaporator 10, which is shown three in a parallel distance one above the other, made of heat-conducting material such as aluminum or aluminum alloy levels 11 having. These are due to repeated bending of a sheet-like aluminum sheet blank generated, with the bend a substantially vertical to the levels 11 arranged wall piece 12 is created, each two adjacently arranged levels 11 interconnected in one piece.
  • no-frost refrigeration devices such as refrigerators or freezers
  • suitable evaporator 10 which is shown three in a parallel distance one above the other, made of heat-conducting material such as aluminum or aluminum alloy levels 11 having.
  • the Levels 11 are meandering on their mutually facing inner sides Equipped refrigerant channel arrangement 13 equipped, which in the roll bond process is introduced into the blank of evaporator 10, the refrigerant channel arrangement 13 on the higher and middle level 11 as well the wall piece 12 connecting the two levels 11 to one another on the outside the circuit board is provided, while the refrigerant channel arrangement 13 on the middle and lower level 11 and the wall piece used to connect them 12 is arranged on the opposite outside of the board.
  • refrigerant channel arrangements 13 are interconnected by a channel piece, not shown connected so that the three levels 11 with a continuous Refrigerant guide are covered, which are from a refrigerator of a no-frost refrigerator is supplied with refrigerant.
  • intermediate spaces 14 which for forced ventilation of levels 11 and thus to increase the heat transfer on the levels 11 to the for example by a fan circulated cooling air serve, the ventilation direction of the evaporator 10 transversely
  • the meandering refrigerant channel arrangement 13 takes place, as is exemplary in Fig. 2 is indicated by an arrow.
  • Fig. 3 shows a simplified embodiment of a further embodiment of a Evaporator 20, which has two plates, for example made of aluminum or aluminum alloy trained levels 21 which are at a parallel distance from each other are arranged.
  • the levels 21 are on their mutually facing inner sides 22 provided with a meandering refrigerant channel arrangement 23, which by, for example, made of a copper pipe, in heat-conducting contact with the level 21 standing pipeline is formed.
  • the refrigerant channel arrangements 23 are connected to each other on the inner sides 22 by a connecting piece 24, so that the evaporator 20 a continuous over its two levels 21 Has refrigerant management.
  • the levels 21 form one another due to their distance from one another Gap 25, which for the forced ventilation of the inner sides 22, in particular the refrigerant channel arrangement 23 is used, the ventilation, which to increase serves to transfer heat to the forced air, transversely to the meandering shape applied refrigerant channel arrangements 23 takes place along the levels 21, as this is shown by way of example in FIG. 4 by means of an arrow.
  • FIGS. 5 and 6 show an evaporator 30, which is similar to the evaporator 20 and like this two, like a board, arranged in parallel distance from each other executed levels 31 made of heat-conducting material, such as aluminum or the like has, which like the levels 21 on their mutually facing inner sides 32 each a meandering refrigerant channel arrangement 33 are equipped, which with each other through a connecting piece 34 to a continuous over the entire evaporator-running refrigerant guide are connected.
  • Levels 31 form one by their vertical distance between their inner sides 32
  • Intermediate space 35 which, like the intermediate space 25, is by means of a fan forced cooling air (shown symbolically in Fig.
  • the wave profile 36 is, for example, by non-cutting deformation one made of a good heat-conducting material such as aluminum, copper or the like Sheet metal plate produces and at least largely has in its corrugated form the dimensions of the levels 31.
  • FIGS. 7 and 8 show an embodiment variant designed similarly to the evaporator 30 of an evaporator 40 with two spaced apart from each other Levels 41. These are meandering on their mutually facing inner sides 42 arranged refrigerant channel arrangement 43, which via a tubular trained connector are interconnected and which of a meandering shaped, in heat-conducting contact with the levels 41 Pipeline made of a good heat-conducting material such as copper, aluminum or the like is shaped. Between the levels 41 is due to their parallel distance an interstice 45 is created, within which along the planes 41 Cooling air is forced to achieve a more favorable heat transfer in the direction of the arrow (see Fig. 8) is promoted.
  • wave profile sections 46 and 47 are provided, both of which wave profile sections 46 and 47 on the refrigerant channel arrangement 43 of the higher level 41 and on the refrigerant channel arrangement 43 of the lower level 41 bear in heat-conducting contact.
  • the wave profile sections 46 and 47 are forced to increase turbulence in the Intermediate space 45 conveyed cooling air offset from one another such that the Troughs and troughs of the strip-like cooling air conveyed in the direction of the arrow Wave profile sections run in opposite phase to each other (see Fig. 7).
  • FIG. 9 and FIG. 10 show a further embodiment of an evaporator 50, which consists of two planes 51 arranged one above the other at a parallel distance from one another thermally conductive material such as aluminum or an aluminum alloy is formed.
  • the levels 51 are each facing their inner sides 52 with one Refrigerant channel arrangement 53 in the form of a meandering shaped pipe good heat-conducting material such as copper provided, the refrigerant channel arrangements 53 through a pipe connector 54 to a continuous extending refrigerant guide for the evaporator 50 are connected.

Abstract

The evaporator (10) is made up of parallel plates (11) of thermally conductive material, e.g. aluminum, arranged one above the other. These are in contact with channels (13) carrying the refrigerant

Description

Die Erfindung betrifft einen Verdampfer zur Anordnung außerhalb des zu kühlenden Kälteraumes und zur zwangsweisen Belüftung anhand eines die abgekühlte Kaltluft zwangsweise in den Kälteraum fördernden Ventilators.The invention relates to an evaporator for arrangement outside the cold space to be cooled and for forced ventilation using the cooled cold air forced into the cooling room promoting fan.

Bei als No-Frostkältegeräte ausgebildeten Kühl- und Gefrierschränken sind die zur Kälteerzeugung dienenden Verdampfer außerhalb ihres Lagerraumes angeordnet und im allgemeinen als sogenannte Lamellenverdampfer ausgebildet. Bei dieser Art von Verdampfer sind meanderartig angelegte Verdampferrohre vorgesehen, welche zur Vergrößerung ihrer wärmeübertragenden Oberflache mit entlang ihrer Meanderform angeordneten, in Form von dünnwandigen Blechen gefertigten Lamellen versehen sind. Die Herstellung derartiger Verdampfer ist fertigungstechnisch aufwendig und kostenintensiv, insbesondere dann, wenn die Verdampferrohre aus geraden und gebogenen Einzelrohrstücken zusammengefügt und miteinander verlötet werden.In refrigerators and freezers designed as no-frost refrigeration units, they are used to generate refrigeration serving evaporator arranged outside their storage room and in generally designed as a so-called lamella evaporator. With this type of vaporizer are meandering evaporator tubes are provided, which for enlargement their heat transfer surface with arranged along their meander shape, slats made in the form of thin-walled sheets are provided. The production such an evaporator is technically complex and costly, especially when the evaporator tubes consist of straight and curved individual tube pieces put together and soldered together.

Der Erfindung liegt die Aufgabe zugrunde, einen Verdampfer gemäß dem Oberbegriff des Anspruches 1 mit einfachen konstruktiven Maßnahmen zu verbessern.The invention is based, an evaporator according to the preamble of the task Claim 1 to improve with simple constructive measures.

Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, daß der Verdampfer durch wenigstens annähernd parallel übereinander angeordnete, wärmeleitende Ebenen gebildet ist, über welche sich zumindest ein die beiden Ebenen kältetechnisch miteinander verbindender, in wärmeleitenden Kontakt mit den Ebenen stehender Kältemittelkanal erstreckt.This object is achieved according to the invention in that the evaporator by at least thermally conductive planes arranged approximately parallel one above the other which is used to connect at least one of the two levels refrigerant channel standing in heat-conducting contact with the levels.

Durch die platinenartig gestalteten Ebenen sind ohne fertigungstechnisch aufwendige Maßnahmen, z. B. in Form von Lamellen, in Ansatz bringen zu müssen, kostengünstig große Wärmetauschflächen erzeugt, durch deren parallele Anordnung über einander zugleich eine zielgerichtete Kälteleistung bei geringen Raumbedarf ermöglicht ist. Darüber hinaus eröffnen die platinenartig ausgebildeten Ebenen die Möglichkeit, zur Steigerung der Kälteleistung des Verdampfers mit einfachen fertigungstechnischen Maßnahmen die Anordnungsdichte der Kältemittelkanalanordnung zur steigern.Due to the board-like levels, there are no complex manufacturing technology Measures, e.g. B. in the form of lamellae to have to approach, inexpensive large heat exchange surfaces generated by their parallel arrangement on top of each other At the same time, targeted cooling performance with a small space requirement is made possible. In addition, the plateau-like levels open up the possibility of increasing the cooling capacity of the evaporator with simple manufacturing measures to increase the arrangement density of the refrigerant channel arrangement.

Nach einer bevorzugten Ausführung des Gegenstandes der Erfindung ist vorgesehen, daß die Ebenen durch Abwinklung einer einstückigen Platine gebildet sind, in deren abgewinkelten Zustand die Ebenen sich zumindest annähernd parallel gegenüberliegen und mit der Kältemittelkanalanordnung versehen sind.According to a preferred embodiment of the subject matter of the invention, that the planes are formed by angling a one-piece board, in the angled State the planes are at least approximately parallel and are provided with the refrigerant channel arrangement.

Ein derartiger Verdampfer ist nicht nur fertigungstechnisch besonders einfach und kostengünstig herstellbar sondern bietet durch seinen U-förmigen Querschnitt eine hohe Eigensteifigkeit, so daß das Handling des Verdampfers in der Fertigung deutlich erleichtert ist.Such an evaporator is not only particularly simple and inexpensive in terms of production technology producible but offers a high inherent rigidity due to its U-shaped cross-section, so that the handling of the evaporator in production is significantly easier is.

Fertigungstechnisch besonders einfach abänderbar ist das Kanalbild des Verdampfers und somit besonders zielgerichtet anpaßbar an dessen bedarfsgemäße Kälteleistung, wenn nach einer nächsten bevorzugten Ausführungsform des Gegenstandes der Erfindung vorgesehen ist, das die Platine mit der darauf angeordneten Kältemittelkanalanordung im Roll-Bond- oder mit Z-Bond-Verfahren erzeugt ist.The channel pattern of the evaporator is particularly easy to change in terms of production technology and thus particularly adaptable to its cooling capacity as required, if according to a next preferred embodiment of the subject of the invention it is provided that the circuit board with the refrigerant channel arrangement arranged thereon is generated in the roll bond or with the Z bond process.

Ein besonders kostengünstiger Aufbau für einen Verdampfer ergibt sich, wenn nach einer nächsten bevorzugten Ausführungsform des Gegenstandes der Erfindung vorgesehen ist, daß die Kältemittelkanalanordnung als eine in Windungen geformte Rohleitung ausgeführt ist, welche an den Ebenen in wärmeleitenden Kontakt festgesetzt ist.A particularly cost-effective construction for an evaporator results if after one the next preferred embodiment of the subject of the invention is provided, that the refrigerant channel arrangement is designed as a pipe formed in turns which is fixed at the levels in thermally conductive contact.

Darüber hinaus ermöglicht eine derartige Ausführung eines Verdampfers eine gezielte Materialkombination zwischen der das Kältemittel führenden Rohrleitung und den die Wärmetauschflächen darstellenden Ebenen, wodurch der Wärmeübergang zwischen beiden Elementen auf einfache Weise optimierbar ist.In addition, such an embodiment of an evaporator enables targeted Material combination between the pipeline carrying the refrigerant and the Levels representing heat exchange surfaces, which increases the heat transfer between the two Elements can be optimized in a simple manner.

Besonders zweckmäßig angeordnet ist die Kältemittelkanalanordnung am Verdampfer, wenn nach einer nächsten vorteilhaften Ausgestaltung des Gegenstandes der Erfindung vorgesehen ist, daß die Kältemittelkanalanordnung an den einander zugewandten Flächen der Ebenen vorgesehen ist. The refrigerant channel arrangement on the evaporator is particularly expediently arranged, if after a next advantageous embodiment of the subject of the invention it is provided that the refrigerant channel arrangement on the mutually facing surfaces the levels is provided.

Ferner ergibt sich hierdurch die Möglichkeit zwischen die Ebenen zum äußerst intensiven wärmeleitenden Kontakt zusätzliche Elemente zur weiteren Vergrößerung der Wärmetauschflächen des Verdampfers einzubringen, ohne dabei den Raumbedarf zur Unterbringung des Verdampfers vergrößern zu müssen.This also creates the possibility between the levels to be extremely intense thermally conductive contact additional elements to further enlarge the heat exchange surfaces of the evaporator without the space required for accommodation need to enlarge the evaporator.

Besonders einfach herstellbar ist ein zur Vergrößerung der Wärmetauschflächen dienendes zusätzliches Element, wenn gemäß einer nächsten vorteilhaften Ausgestaltung des Gegenstandes der Erfindung vorgesehen ist, daß zwischen den parallel übereinander angeordneten Ebenen ein in wärmeleitenden Kontakt mit diesen stehendes Wellenprofil angeordnet ist.It is particularly easy to produce one that serves to enlarge the heat exchange surfaces additional element, if according to a next advantageous embodiment of the The object of the invention is provided that between those arranged in parallel one above the other Levels arranged in a heat-conducting contact with these standing wave profile is.

Entsprechend einer weiteren bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß zwischen den parallel übereinander angeordneten Ebenen mehrere Wellenprofilabschnitte in wärmeleitenden Kontakt mit den Ebenen nebeneinander angeordnet sind, von denen die Wellen von zwei benachbart zueinander angeordneten Wellenprofilabschnitten gegenphasig zueinander verlaufen.According to a further preferred embodiment of the subject of the invention it is provided that between the levels arranged in parallel one above the other several wave profile sections in heat-conducting contact with the planes side by side are arranged, of which the shafts of two arranged adjacent to each other Wave profile sections run in opposite phase to each other.

Durch eine derartige Ausführungsvariante ist mit einfachen Mitteln eine besonders platzsparende und große Wärmetauschfläche im Verdampfer erreicht, wobei die zur Vergrößerung der Wärmetauschfläche beitragenden Wellenprofile durch ihre Anordnung zwischen den beiden Ebenen in besonders intensiven wärmeleitenden Kontakt mit den Ebenen bringbar sind.Such an embodiment variant is particularly space-saving with simple means and large heat exchange area in the evaporator is achieved, which to enlarge the heat exchange surface contributing wave profiles by their arrangement between the two levels in particularly intensive heat-conducting contact with the levels are feasible.

Besonders zweckmäßig ausgebildet sind die dem Verdampfer bildenden Ebenen, wenn nach einer nächsten vorteilhaften Ausgestaltung des Gegenstandes der Erfindung vorgesehen ist, daß die beiden Ebenen zumindest weitestgehend geschlossen flächig ausgebildet sind.The levels forming the evaporator are particularly expedient if provided according to a next advantageous embodiment of the subject of the invention is that the two levels are at least largely flat are.

Nach einer nächsten bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß die beiden Ebenen aus ihrer Fläche herausgestellt angeordnete Flächenelemente aufweisen.According to a next preferred embodiment of the subject of the invention provided that the two planes arranged out of their surface arranged surface elements exhibit.

Hierdurch ist an den Wärmetauschflächen eine Oberflächenvergrößerung bezweckt, welche sich einerseits fertigungstechnisch besonders günstig bei der Herstellung des Verdampfers erzeugen läßt und welche ohne zusätzliche Maßnahmen durch deren unmittelbare Anbindung an die Wärmetauschflächen im besonders intensiven wärmeleitenden Kontakt mit den Wärmetauschflächen steht. Ferner sind durch eine derartige Lösung durch Zusatzmaßnahmen in intensiven wärmeleitenden Kontakt bringbare zusätzliche Elemente zur Vergrößerung der Wärmetauschfläche am Verdampfer vermieden.The purpose of this is to increase the surface area of the heat exchange surfaces is particularly favorable in terms of production technology in the manufacture of the evaporator can generate and which without additional measures by their immediate Connection to the heat exchange surfaces in the particularly intensive heat-conducting There is contact with the heat exchange surfaces. Furthermore, such a solution additional measures that can be brought into intensive heat-conducting contact by additional measures Avoid elements to increase the heat exchange area on the evaporator.

Eine besonders intensive Verwirbelung der die Wärmetauschflächen umströmenden Luft und damit eine gute Wärmeübertragung von den Wärmetauschflächen auf diese Luft ergibt sich, wenn gemäß einer letzten bevorzugten Ausführungsform des Gegenstandes der Erfindung vorgesehen ist, daß die Flächenelemente wechselweise aus den Ebenen herausgestellt angeordnet sind und sowohl in den Zwischenraum zwischen die beiden Ebenen als auch davon abgewandt nach außen gerichtet sind.A particularly intensive swirling of the air flowing around the heat exchange surfaces and thus results in good heat transfer from the heat exchange surfaces to this air himself when according to a last preferred embodiment of the object the invention provides that the surface elements alternately from the levels exposed are arranged and both in the space between the two Layers as well as facing away from it.

Die Erfindung ist in der nachfolgenden Beschreibung anhand mehrerer in der beigefügten Zeichnung vereinfacht dargestellter Ausführungsbeispiel erläutert.The invention is described in the following description with reference to several in the accompanying Drawing illustrated simplified embodiment.

Es zeigen:

Fig. 1
Eine erste Ausführungsform eines Verdampfers mit mehreren durch Abwinkelung einer Platine erzeugte parallele Ebenen in Vorderansicht,
Fig. 2
den Verdampfer gemäß Fig. 1 Draufsicht,
Fig. 3
eine zweite Ausführungsform eines Verdampfers mit zwei übereinander angeordneten platinenartigen, über eine Rohrkältemittelleitung kältetechnisch aneinander angekoppelte Ebenen, in Vorderansicht,
Fig. 4
dem Verdampfer gemäß Fig. 3 in Draufsicht,
Fig. 5
dem Verdampfer gemäß Fig. 4 mit einem zwischen seinen Ebenen angeordneten Wellenprofil, in Vorderansicht,
Fig. 6
den Verdampfer gemäß Fig. 5 in Draufsicht,
Fig. 7
den Verdampfer gemäß Fig. 5 mit einem weiteren zwischen seinen Ebenen gegenphasig zum ersten Wellenprofil angeordneten weiteren Wellenprofil, in Vorderansicht,
Fig. 8
den Verdampfer gemäß Fig. 7 in Draufsicht,
Fig. 9
eine letzte Ausführungsform eines ähnlich zu dem in Fig. 3 dargestellten Verdampfer ausgeführten Verdampfers, mit an seinen platinenartigen Verdampferebenen herausgestellt angeordneten Flächenelementen, in Seitenansicht,
Fig. 10
dem Verdampfer gemäß Fig. 9 in Draufsicht.
Show it:
Fig. 1
A first embodiment of an evaporator with several parallel planes produced by angling a circuit board in front view,
Fig. 2
1 the top view of the evaporator,
Fig. 3
2 shows a second embodiment of an evaporator with two plane-like levels arranged one above the other and coupled to one another in terms of refrigeration by means of a pipe refrigerant line, in a front view,
Fig. 4
3 in top view,
Fig. 5
4 with a wave profile arranged between its planes, in front view,
Fig. 6
5 in top view,
Fig. 7
5 with a further wave profile arranged between its planes in phase opposition to the first wave profile, in front view,
Fig. 8
7 in top view,
Fig. 9
3 shows a last embodiment of an evaporator designed similarly to the evaporator shown in FIG. 3, with surface elements arranged on its plate-like evaporator planes, in a side view,
Fig. 10
9 in top view.

In Fig. 1 ist eine erste Ausführungsform eines zum Einsatz in sogenannten No-Frostkältegeräten, wie Kühl- oder Gefrierschränke, geeigneter Verdampfer 10 gezeigt, welcher drei in parallelem Abstand übereinander angeordnete, aus wärmeleitendem Material wie beispielsweise Aluminium oder Aluminiumlegierungen gefertigte Ebenen 11 aufweist. Diese sind durch mehrmalige Abwinklung eines platinenartigen Aluminiumblechzuschnittes erzeugt, wobei durch die Abwinklung ein im wesentlichen senkrecht zu den Ebenen 11 angeordnetes Wandstück 12 geschaffen ist, welches jeweils zwei benachbart zueinander angeordnete Ebenen 11 einstückig miteinander verbindet. Die Ebenen 11 sind an ihren einander zugewandten Innenseiten mit einer meanderartig angelegten Kältemittelkanalanordnung 13 ausgestattet, welche im Rollbondverfahren in den platinenartigen Zuschnitt des Verdampfer 10 eingebracht ist, wobei die Kältemittelkanalanordnung 13 an der höher liegenden und mittleren Ebene 11 sowie an dem die beiden Ebenen 11 miteinander verbindenden Wandstück 12 an der einen Außenseite der Platine vorgesehen ist, während die Kältemittelkanalanordnung 13 an der mittleren und unteren Ebene 11 sowie dem zu deren Verbindung dienenden Wandstück 12 an der dazu gegenüberliegenden Außenseite der Platine angeordnet ist. Die an der mittleren Ebene 11 beidseitig diesem Platinenabschnitt vorgesehenen Kältemittelkanalanordnungen 13 sind miteinander durch ein nicht näher gezeigtes Kanalstück verbunden, so daß die drei Ebenen 11 mit einer durchgehend verlaufenden Kältemittelführung überzogen sind, welche von einer Kältemaschine eines No-Frostkältegeräts mit Kältemittel versorgt ist. Durch den Abstand zwischen den benachbart zueinander angeordneten Ebenen 11 sind Zwischenräume 14 erzeugt, welche zur zwangsweisen Belüftung der Ebenen 11 und somit zur Steigerung des Wärmeüberganges an den Ebenen 11 auf die beispielsweise von einem Ventilator zwangsweise umgewälzte Kühlluft dienen, wobei die Belüftungsrichtung des Verdampfers 10 quer zu der meanderförmig angelegten Kältemittelkanalanordnung 13 erfolgt, wie dies beispielhaft in Fig. 2 durch einen Pfeil angedeutet ist. 1 shows a first embodiment of a device for use in so-called no-frost refrigeration devices, such as refrigerators or freezers, suitable evaporator 10, which is shown three in a parallel distance one above the other, made of heat-conducting material such as aluminum or aluminum alloy levels 11 having. These are due to repeated bending of a sheet-like aluminum sheet blank generated, with the bend a substantially vertical to the levels 11 arranged wall piece 12 is created, each two adjacently arranged levels 11 interconnected in one piece. The Levels 11 are meandering on their mutually facing inner sides Equipped refrigerant channel arrangement 13 equipped, which in the roll bond process is introduced into the blank of evaporator 10, the refrigerant channel arrangement 13 on the higher and middle level 11 as well the wall piece 12 connecting the two levels 11 to one another on the outside the circuit board is provided, while the refrigerant channel arrangement 13 on the middle and lower level 11 and the wall piece used to connect them 12 is arranged on the opposite outside of the board. The on the middle level 11 on both sides of this circuit board section provided refrigerant channel arrangements 13 are interconnected by a channel piece, not shown connected so that the three levels 11 with a continuous Refrigerant guide are covered, which are from a refrigerator of a no-frost refrigerator is supplied with refrigerant. By the distance between the neighboring Intermediate levels 11 are created intermediate spaces 14 which for forced ventilation of levels 11 and thus to increase the heat transfer on the levels 11 to the for example by a fan circulated cooling air serve, the ventilation direction of the evaporator 10 transversely The meandering refrigerant channel arrangement 13 takes place, as is exemplary in Fig. 2 is indicated by an arrow.

Fig. 3 zeigt in vereinfachter schematischer Darstellung eine weitere Ausführungsform eines Verdampfers 20, welcher zwei platinenartig beispielsweise aus Aluminium oder Auminiumlegierung ausgebildete Ebenen 21 aufweist, welche in parallelen Abstand zueinander angeordnet sind. Die Ebenen 21 sind an ihren einander zugewandten Innenseiten 22 mit einer meanderartige angelegten Kältemittelkanalanordnung 23 versehen, welche durch beispielsweise aus einem Kupferrohr gefertigten, in wärmeleitenden Kontakt mit den Ebenen 21 stehenden Rohrleitung gebildet ist. Die Kältemittelkanalanordnungen 23 an den Innenseiten 22 sind untereinander durch ein Verbindungsstück 24 verbunden, so daß der Verdampfer 20 eine über seine beiden Ebenen 21 durchgehende verlaufende Kältemittelführung aufweist. Die Ebenen 21 bilden durch ihren Abstand zueinander einen Zwischenraum 25, welcher zur zwangsweisen Belüftung der Innenseiten 22, insbesondere der Kältemittelkanalanordnung 23 dient, wobei die Belüftung, welche zur Steigerung des Wärmeübergangs auf die zwangsweise umgwälzte Luft dient, quer zu den meanderförmig angelegten Kältemittelkanalanordnungen 23 entlang der Ebenen 21 erfolgt, wie dies beispielhaft in Fig. 4 mittels eines Pfeiles gezeigt ist.Fig. 3 shows a simplified embodiment of a further embodiment of a Evaporator 20, which has two plates, for example made of aluminum or aluminum alloy trained levels 21 which are at a parallel distance from each other are arranged. The levels 21 are on their mutually facing inner sides 22 provided with a meandering refrigerant channel arrangement 23, which by, for example, made of a copper pipe, in heat-conducting contact with the level 21 standing pipeline is formed. The refrigerant channel arrangements 23 are connected to each other on the inner sides 22 by a connecting piece 24, so that the evaporator 20 a continuous over its two levels 21 Has refrigerant management. The levels 21 form one another due to their distance from one another Gap 25, which for the forced ventilation of the inner sides 22, in particular the refrigerant channel arrangement 23 is used, the ventilation, which to increase serves to transfer heat to the forced air, transversely to the meandering shape applied refrigerant channel arrangements 23 takes place along the levels 21, as this is shown by way of example in FIG. 4 by means of an arrow.

Fig. 5 und Fig. 6 zeigt einen Verdampfer 30, welcher ähnlich dem Verdampfer 20 ausgebildet ist und wie dieser zwei in parallelen Abstand zueinander angeordnete, platinenartig ausgeführte Ebenen 31 aus wärmeleitendem Material, wie Aluminium oder dergleichen aufweist, welche wie die Ebenen 21 an ihren einander zugewandten Innenseiten 32 mit je einer meanderförmig verlaufenden Kältemittelkanalanordnung 33 ausgestattet sind, welche untereinander durch ein Verbindungsstück 34 zu einer durchgehend über den gesamten Verdampfer verlaufenden Kältemittelführung verbunden sind. Die Ebenen 31 bilden durch ihren vertikalen Abstand zueinander zwischen ihren Innenseiten 32 einen Zwischenraum 35, welcher wie der Zwischenraum 25 von einer mittels eines Ventilators zwangsweise umgewälzten Kühlluft (in Fig. 6 mit einem Pfeil symbolisch dargestellt) zur Erreichung eines günstigeren Wärmeübergangs zwangsweise belüftet ist und welcher zur Aufnahme eines die Wärmeübertragungsfläche der Ebenen 31 vergrößernden Wellenprofils 36 dient. Dieses befindet sich innerhalb des Zwischenraumes 35 in wärmeleitenden Kontakt mit der Kältemittelkanalanordnung 33 an den Innenseiten 32 und dient zusätzlich zur Steigerung der Turbulenzen für die zwangsweise durch den Zwischenraum 35 geförderte Kühlluft. Das Wellenprofil 36 ist beispielsweise durch spanlose Verformung einer aus gut wärmeleitenden Material wie Aluminium, Kupfer oder der dergleichen gefertigten Blechplatine erzeugt und besitzt in seiner gewellten Form zumindest weitestgehend die Abmessungen der Ebenen 31. FIGS. 5 and 6 show an evaporator 30, which is similar to the evaporator 20 and like this two, like a board, arranged in parallel distance from each other executed levels 31 made of heat-conducting material, such as aluminum or the like has, which like the levels 21 on their mutually facing inner sides 32 each a meandering refrigerant channel arrangement 33 are equipped, which with each other through a connecting piece 34 to a continuous over the entire evaporator-running refrigerant guide are connected. Levels 31 form one by their vertical distance between their inner sides 32 Intermediate space 35, which, like the intermediate space 25, is by means of a fan forced cooling air (shown symbolically in Fig. 6 with an arrow) for Achieving a cheaper heat transfer is forced ventilation and which to Recording of a wave profile enlarging the heat transfer surface of the planes 31 36 serves. This is located in the space 35 in thermally conductive Contact with the refrigerant channel arrangement 33 on the inner sides 32 and additionally serves to increase the turbulence forcing through the gap 35 conveyed cooling air. The wave profile 36 is, for example, by non-cutting deformation one made of a good heat-conducting material such as aluminum, copper or the like Sheet metal plate produces and at least largely has in its corrugated form the dimensions of the levels 31.

Die Figuren 7 und 8 zeigen eine ähnlich dem Verdampfer 30 ausgebildete Ausführungsvariante eines Verdampfers 40 mit zwei im parallelen Abstand zueinander angeordneten Ebenen 41. Diese sind an ihren einander zugewandten Innenseiten 42 mit je einer meanderartig angeordneten Kältemittelkanalanordnung 43 versehen, welche über ein rohrartig ausgebildetes Verbindungsstück miteinander verbunden sind und welche aus einer meanderförmig geformten, in wärmeleitenden Kontakt mit den Ebenen 41 stehenden Rohrleitung aus gut wärmeleitenden Material wie beispielsweise Kupfer, Aluminium oder dergleichen geformt ist. Zwischen den Ebenen 41 ist durch deren parallelem Abstand zueinander ein Zwischenraum 45 erzeugt, innerhalb welchen entlang der Ebenen 41 Kühlluft zur Erzielung eines günstigeren Wärmeübergangs zwangsweise in Pfeilrichtung (siehe Fig. 8) gefördert ist. Innerhalb des Zwischenraumes 45 sind Wellenprofilabschnitte 46 und 47 vorgesehen, von denen beide Wellenprofilabschnitte 46 und 47 an der Kältemittelkanalanordnung 43 der höher liegenden Ebene 41 und an der Kältemittelkanalanordnung 43 der tieferliegenden Ebene 41 in wärmeleitenden Kontakt anliegen. Die Wellenprofilabschnitte 46 und 47 sind zur Steigerung der Turbulenz der zwangsweise in den Zwischenraum 45 geförderten Kühlluft derart versetzt zueinander angeordnet, daß die Wellentäler und Wellentäler der in Pfeilrichtung geförderten Kühlluft angeordneten streifenartigen Wellenprofilabschnitte gegenphasig zueinander verlaufen (siehe hierzu Fig. 7).FIGS. 7 and 8 show an embodiment variant designed similarly to the evaporator 30 of an evaporator 40 with two spaced apart from each other Levels 41. These are meandering on their mutually facing inner sides 42 arranged refrigerant channel arrangement 43, which via a tubular trained connector are interconnected and which of a meandering shaped, in heat-conducting contact with the levels 41 Pipeline made of a good heat-conducting material such as copper, aluminum or the like is shaped. Between the levels 41 is due to their parallel distance an interstice 45 is created, within which along the planes 41 Cooling air is forced to achieve a more favorable heat transfer in the direction of the arrow (see Fig. 8) is promoted. Within the space 45 are wave profile sections 46 and 47 are provided, both of which wave profile sections 46 and 47 on the refrigerant channel arrangement 43 of the higher level 41 and on the refrigerant channel arrangement 43 of the lower level 41 bear in heat-conducting contact. The wave profile sections 46 and 47 are forced to increase turbulence in the Intermediate space 45 conveyed cooling air offset from one another such that the Troughs and troughs of the strip-like cooling air conveyed in the direction of the arrow Wave profile sections run in opposite phase to each other (see Fig. 7).

In Fig. 9 und Fig. 10 ist eine weitere Ausführungsform eines Verdampfers 50 dargestellt, welcher aus zwei in parallelen Abstand übereinander angeordneten Ebenen 51 aus gut wärmeleitenden Material wie beispielsweise Aluminium oder einer Aluminiumlegierung gebildet ist. Die Ebenen 51 sind ihren aneinander zugewandten Innenseiten 52 je mit einer Kältemittelkanalanordnung 53 in Form einer meanderartig geformten Rohrleitung aus gut wärmeleitendem Material wie beispielsweise Kupfer versehen, wobei die Kältemittelkanalanordnungen 53 durch ein Rohrleitungsverbindungsstück 54 zu einer durchgehend verlaufenden Kältemittelführung für den Verdampfer 50 verbunden sind. Dieser ist an seinen beiden Ebenen 51 mit zungenartig ausgeführten, aus der Fläche der Ebenen 51 herausgestellt angeordneten Lappen 55 versehen, welche zwischen den meanderartig angelegten Rohrabschnitten der Kältemittelkanalanordnung vorgesehen und ähnlich einer Matrix angeordnet sind, deren Spalten im wesentlichen senkrecht zu den Rohrleitungsabschnitten der Kältemittelkanalanordnungen 53 verlaufen. Von den Spalten der Matrix sind die unmittelbar benachbarten höhenversetzt zueinander angeordnet, wobei die Lappen 55 innerhalb der um den Höhenversatz zurückgesetzten Spalten mit ihren freien Ende in einen durch den Abstand der Ebenen 51 gebildeten Zwischenraum 56 ragen, während die in den verbleibenden Spalten der Matrix vorgesehen Lappen 55 mit ihren freien Ende vom Zwischenraum 56 weggerichtet sind. In den Zwischenraum 56 wird zur Erzielung eines günstigeren Wärmeübergangs anhand eines Ventilators zwangsweise Kühlluft gefördert, welche in Folge der in unterschiedlicher Richtung herausgestellten Lappen 55 zusätzlich verwirbelt wird, so daß sich die Turbulenz der zwangsweise in den Zwischenraum geförderten Kühlluft erhöht und auf diese Weise die Wärmeübertragung zusätzlich verbessert ist.9 and FIG. 10 show a further embodiment of an evaporator 50, which consists of two planes 51 arranged one above the other at a parallel distance from one another thermally conductive material such as aluminum or an aluminum alloy is formed. The levels 51 are each facing their inner sides 52 with one Refrigerant channel arrangement 53 in the form of a meandering shaped pipe good heat-conducting material such as copper provided, the refrigerant channel arrangements 53 through a pipe connector 54 to a continuous extending refrigerant guide for the evaporator 50 are connected. This is on its two levels 51 with tongue-shaped, from the surface of the levels 51 exposed tabs 55 provided between the meandering provided pipe sections of the refrigerant channel arrangement and similar to one Matrix are arranged, the columns of which are substantially perpendicular to the pipe sections of the refrigerant channel arrangements 53 run. Of the columns of the matrix are the immediately adjacent are offset in height from each other, the tabs 55 within the columns set back by the height offset with their free ends in protrude a space 56 formed by the spacing of the levels 51, while the flaps 55 provided in the remaining columns of the matrix with their free ends are directed away from the space 56. In the space 56 is a to achieve cheaper heat transfer with the help of a fan forced cooling air, which in addition as a result of the tabs 55 which are exposed in different directions is swirled so that the turbulence is forced into the space promoted cooling air and in this way the heat transfer additionally is improved.

Das sich aufgrund des Reifansatzes an den Verdampfern während der Abtauzeit ergebende Schmelzwasser soll anhand eines Drainagesystems, welches in die Ebenen eingebracht sein soll abgeführt werden, wodurch die Gefahr, daß das Abtauwasser erneut an den Ebenen der Verdampfer festfriert deutlich minimiert ist. Ein mit einem Drainagesystem in seinen Ebenen versehener Verdampfer läßt sich, ohne die Abtaufunktion zu beeinträchtigen, auch in horizontaler Einbaulage verwenden. Für den Fall, daß an den Ebenen auf ein Drainagesystem verzichtet werden soll, ist es vorteilhaft, die Verdampfer mit ihren Ebenen in einer vertikalen Einbaulage zu verwenden, um stets sicherzustellen, daß das während der Abtauphase anfallende Schmelzwasser rasch von den Ebenen ablaufen kann und somit nicht die Gefahr besteht, daß dieses erneut an den Ebenen der Verdampfer festfriert.The result of the frost build-up on the evaporators during the defrost time Melt water is said to be based on a drainage system that is introduced into the plains should be drained away, reducing the risk of the defrost water again freezing to the levels of the evaporator is clearly minimized. One with a drainage system evaporator provided in its levels can be used without the defrost function impair, also use in a horizontal installation position. In the event that to the If there is no need for a drainage system, it is advantageous to use the evaporator with their levels in a vertical installation position to ensure always that the melt water accumulating during the defrosting phase runs off the plains quickly can and therefore there is no danger that this will occur again at the levels of Evaporator freezes.

Claims (10)

Verdampfer zur Anordnung außerhalb des zu kühlenden Kälteraumes und zur zwangsweisen Belüftung anhand eines die abgekühlte Kühlluft zwangsweise in den Kühlraum fördernden Ventilators, dadurch gekennzeichnet, daß der Verdampfer durch wenigstens zwei annähernd parallel übereinander angeordnete, wärmeleitende Ebenen gebildet ist, über welche sich zumindest ein die beiden Ebenen kältetechnisch miteinander verbindender, in wärmeleitenden Kontakt mit den Ebenen stehender Kältemittelkanal erstreckt.Evaporator for arrangement outside the cold space to be cooled and for forced ventilation by means of a fan forcibly conveying the cooled cooling air into the cooling space, characterized in that the evaporator is formed by at least two heat-conducting levels arranged approximately parallel one above the other, over which at least one of the two Layers of refrigeration interconnecting refrigerant, in thermally conductive contact with the levels extends. Verdampfer nach Anspruch 1, dadurch gekennzeichnet, daß die Ebenen durch Abwinklung einer Platine gebildet sind, welche im abgewinkelten Zustand einen zumindest annähernd U-förmigen Querschnitt aufweist, und welche zumindest an einer ihrer großflächigen Platinenflächen mit einem Kältemittelkanal versehen ist.Evaporator according to Claim 1, characterized in that the planes are formed by angling a circuit board which, in the angled state, has an at least approximately U-shaped cross section and which is provided with a refrigerant channel on at least one of its large-area circuit board surfaces. Verdampfer nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Kältemittelkanal an der Platine im Roll-Bond-Verfahren erzeugt ist.Evaporator according to claim 1 or 2, characterized in that the refrigerant channel is generated on the circuit board using the roll bond method. Verdampfer nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Kältemittelkanal als in Windungen geformte Rohrleitung ausgeführt ist, welche an den Ebenen in wärmeleitendem Kontakt festgesetzt ist.Evaporator according to claim 1 or 2, characterized in that the refrigerant channel is designed as a pipeline formed in turns, which is fixed at the levels in heat-conducting contact. Verdampfer nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Kältemittelkanal an den einander zugewandten Außenflächen der Ebenen vorgesehen ist.Evaporator according to one of claims 1 to 4, characterized in that the refrigerant channel is provided on the mutually facing outer surfaces of the levels. Verdampfer nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß zwischen den parallel übereinander angeordneten Ebenen ein in wärmeleitenden Kontakt mit ihrem stehenden Wellenprofil angeordnet ist. Evaporator according to one of claims 1 to 5, characterized in that a heat-conducting contact with its standing wave profile is arranged between the planes arranged one above the other in parallel. Verdampfer nach Anspruch 6, dadurch gekennzeichnet, daß dem Wellenprofil zwischen den beiden Ebenen ein weiteres Wellenprofil gegenphasig überlagert ist.Evaporator according to claim 6, characterized in that a further wave profile is superimposed in phase opposition to the wave profile between the two planes. Verdampfer nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die beiden Ebenen zumindest weitestgehend geschlossenflächig ausgebildet sind.Evaporator according to one of claims 1 to 5, characterized in that the two levels are at least largely closed surface. Verdampfer nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die beiden Ebenen aus ihrer Fläche herausgestellt angeordnete Flächenelemente aufweisen.Evaporator according to one of claims 1 to 5, characterized in that the two planes have surface elements arranged out of their surface. Verdampfer nach Anspruch 9, dadurch gekennzeichnet, daß die Flächenelemente wechselweise aus den Ebenen herausgestellt angeordnet sind und sowohl in den Zwischenraum zwischen die beiden Ebenen als auch davon abgewandt nach außen gerichtet sind.Evaporator according to claim 9, characterized in that the surface elements are alternately arranged protruding from the levels and are directed both towards the outside between the two levels and away from them.
EP98122073A 1997-11-21 1998-11-20 Refrigerator Expired - Lifetime EP0918199B1 (en)

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DE19751768A DE19751768A1 (en) 1997-11-21 1997-11-21 Evaporator
DE19751768 1997-11-21

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Publication number Publication date
EP0918199A3 (en) 2000-04-05
SI0918199T1 (en) 2004-04-30
DE59809407D1 (en) 2003-10-02
EP0918199B1 (en) 2003-08-27
ES2205365T3 (en) 2004-05-01
DE19751768A1 (en) 1999-05-27

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