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EP1307693A1 - Evaporator for a household refrigerator - Google Patents

Evaporator for a household refrigerator

Info

Publication number
EP1307693A1
EP1307693A1 EP00956433A EP00956433A EP1307693A1 EP 1307693 A1 EP1307693 A1 EP 1307693A1 EP 00956433 A EP00956433 A EP 00956433A EP 00956433 A EP00956433 A EP 00956433A EP 1307693 A1 EP1307693 A1 EP 1307693A1
Authority
EP
European Patent Office
Prior art keywords
refrigerant line
heat
approximately
evaporator
holding means
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
EP00956433A
Other languages
German (de)
French (fr)
Other versions
EP1307693B1 (en
Inventor
Detlef Cieslik
Alfred Mader
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP1307693A1 publication Critical patent/EP1307693A1/en
Application granted granted Critical
Publication of EP1307693B1 publication Critical patent/EP1307693B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
    • F28D1/047—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
    • F28F1/22—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means having portions engaging further 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
    • F25B2339/023—Evaporators consisting of one or several sheets on one face of which is fixed a refrigerant carrying coil
    • 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 invention relates to a heat exchanger, in particular an evaporator for a domestic refrigerator, such as a refrigerator, a fridge-freezer or the like, with a tubular, at least approximately heat-conducting refrigerant line, which is at least approximately meandering in shape and in at least largely heat-conducting contact on one at least approximately heat-conducting support plate is fixed.
  • evaporators used in household refrigerators, it is known to introduce their refrigerant channels, which are used to guide refrigerant, after cutting without shaping, into an aluminum plate using the roll-bond or Z-bond method.
  • evaporators are also used in refrigerators, which are composed of an aluminum carrier plate and a separately prefabricated meandering shaped aluminum tube, which is fastened to the carrier plate in heat-conducting contact therewith.
  • fastening the refrigerant guide tube to the carrier board it is known, for example, to fix the prefabricated tube on the carrier board using a soldered connection.
  • one of the soldering partners is coated with a layer serving as solder, which, when this soldering partner is heated, forms a connection with the other soldering partner pretreated for soldering, as a result of which the carrier board is connected to the preformed tube in heat-conducting contact.
  • This type of attachment of the refrigerant pipeline to the carrier board is not only expensive to manufacture and therefore costly, but also entails the risk that the heat-conducting connection between the two evaporator components is also subject to the influence of the workmanship of the production personnel.
  • the invention has for its object to avoid the disadvantages of the prior art in a heat exchanger according to the preamble of claim 1 with simple design measures.
  • the refrigerant line is held positively or non-positively by an at least substantially adhesive, processed in the liquid starting state holding means, which in the hardened state causes at least substantially the attachment of the refrigerant line to the carrier board, wherein the holding means is at least substantially kept away from the contact area of the refrigerant line with the carrier board.
  • a liquid during its processing holding means for fastening for example, a pipe made of aluminum on a z. B. also made of aluminum carrier plate ensures that the liquid holding agent is able to follow the contour of the meandering curved refrigerant line.
  • the entire length of the refrigerant line is held in a functionally reliable manner in heat-conducting contact with the carrier board by the adhesive effect of the holding means, the entire holding surface of the carrier board for holding the before the application of the holding means in heat-conducting contact under a certain holding force on the Holding surface pressed pipe can be coated with liquid holding agent.
  • Pressing the prefabricated refrigerant line onto the holding surface of the carrier board also ensures that the liquid holding agent is kept away from the heat exchange contact area between the refrigerant pipeline and the carrier board.
  • the refrigerant pipeline is at least largely embedded in it after the hardening process of the liquid holding means, so that the refrigerant pipeline is permanently fixed on the one hand in a particularly intensive heat-conducting contact and on the other hand in a particularly precise position on the holding surface of the carrier plate.
  • an adhesive liquid holding agent an elaborate cleaning process of these two components, e.g. B. how it is required for a soldered connection, be avoided.
  • the prefabricated refrigerant line is held particularly securely without additional aids on the holding surface of the carrier board in an evaporator with a refrigerant line which has a deformed circular cross section with at least one approximately flat contact surface with which the refrigerant line lies at least largely in a heat-conducting manner on the carrier board when
  • the surface holding means in the hardened state lie above the center of gravity of the deformed circular cross-sectional area.
  • the holding means by their volume contraction, cause the pipeline to be pressed against the holding surface of the support plate under pretension in order to achieve a particularly intensive heat transfer between the latter and the refrigerant pipeline.
  • the formation of a flat contact surface on the refrigerant pipeline means that the refrigerant pipeline system is particularly intensive and defined. guaranteed on the holding surface of the carrier board to bring about a particularly intensive heat exchange.
  • Oval is understood here to mean a surface stretched along an axis of symmetry with boundary lines curved at the ends.
  • planar structures can be, for example, an ellipse or two semicircles facing one another or semi-ellipses with a rectangle in between.
  • the flat contact surface on the refrigerant pipeline is particularly easy to produce if, according to a next advantageous embodiment of the subject of the invention, it is provided that the deformed circular cross section of the refrigerant line is at least approximately semicircular.
  • the means are designed as heat-inhibiting material processed in the liquid starting state.
  • the refrigerant release of the latter can be influenced in a particularly targeted manner by fastening the refrigerant pipeline in this way to the holding surface of the carrier board.
  • An evaporator produced in this way is particularly suitable for use as a so-called cold-wall evaporator, since the heat-inhibiting material reduces the heat insulation of the wall equipped with the cold-wall evaporator at most insignificantly.
  • the heat-inhibiting material is formed from foamed heat insulation material.
  • foaming heat insulation material to fasten the refrigerant pipeline to the holding surface of the carrier plate makes an evaporator in a simple manner, which is particularly suitable for use as a so-called cold wall evaporator in a household refrigerator.
  • the refrigerator wall equipped with the cold wall evaporator experiences at most a negligible reduction in thermal insulation capacity.
  • the pressure that arises when the thermal insulation material is foamed within a pressure tool that presses the refrigerant pipeline against the carrier board means that This ensures that the heat insulation material at least predominantly wets the open areas lying outside the contact area between the carrier board and the refrigerant pipeline, thereby achieving a particularly intensive retention of the refrigerant pipeline on the carrier board.
  • the heat insulation material is formed from polyurethane foam.
  • the refrigerant pipeline on the evaporator board is kept process-reliable and mechanically stable in thermal contact with the carrier board, especially in large-scale production.
  • the refrigerant line on the carrier board is held in a particularly stable position if, according to a further advantageous embodiment of the invention, it is provided that the holding means cover the refrigerant line at least in sections along its meandering course.
  • the partial coverage of the refrigerant line is generated by an at least approximately network-like surface pattern.
  • the refrigerant line and the holding means on their side facing away from the carrier plate have at least approximately the dimensions are covered against the carrier board having film-like material which is held by the hardened holding means.
  • Evaporators covered in this way are also suitable for use as so-called rear-wall evaporators within the refrigerator compartment of a refrigerator.
  • a closing film serving as a water vapor barrier is particularly suitable for covering the foaming heat insulation material.
  • Fig. 1 a board-like evaporator according to the invention in a spatial view from the front and
  • a circuit board-like evaporator 10 which is used, for example, as a so-called cold wall evaporator, is shown, which has a carrier plate 11 made of heat-conducting material, such as aluminum or also corrosion-protected steel sheet or the like.
  • the carrier plate 11 has on one of its large-area sides a holding surface 12 on which a meandering-shaped, refrigerant line 13 pipeline made of heat-conducting material, such as aluminum or corrosion-protected steel or the like, rests in heat-conducting contact.
  • the cross section of the refrigerant line 13 which originally had a circular cross section, is deformed in such a way that, after the deformation, it has essentially a D-shaped cross section with an essentially flat cross section.
  • the former is embedded in an adhesive heat-insulating material serving as a holding means 15 in the present case, whereby a sandwich-like evaporator structure is produced.
  • this is applied at least to the area of the holding surface 12 which is taken up by the meandering shaped refrigerant line 13, which is pressed onto the carrier plate 11 under a certain projection force before the application of the liquid holding means 15.
  • the prestressing force exerted on the refrigerant line 13 ensures both a flat, thermally conductive contact of the refrigerant line 13 on the carrier board 11 and also prevents the holding means 15, which is in the liquid starting form, from being able to penetrate between the contact surface 14 and the corresponding sections of the holding surface 12.
  • the holding means 15 present in the liquid state at the beginning of its processing ensures that its gaps ensure that the gaps created by the meandering shape of the refrigerant line 13 are at least largely void-free.
  • the refrigerant line 13 embedded in the holding means is positively fixed both along the holding surface 12 and perpendicularly to it within the holding means 15 due to its cross-sectional shape after the adhesive holding means 15 has hardened.
  • the holding of the refrigerant line 13 within the holding means 15 is additionally supported by its net-like surface pattern 16, which at least completely covers the refrigerant line 13, on its surface opposite the holding surface 12.
  • the network-like surface structure of the holding means 15 also ensures that the refrigerant 13 on its side opposite the support surface 14 is only partially covered with the holding means 15, and thus a heat exchange of the refrigerant circulating in the refrigerant line 14 not only towards the carrier plate 11 but also opposite is possible, so that the evaporator 10 is also suitable for use for a so-called rear wall evaporator, for example, freely suspended in a cooling chamber of a refrigerator.
  • thermosetting plastics in the form of molds and castings are also suitable. measures for fastening the refrigerant line 13 to the carrier plate 11, the thermosetting casting and molding compounds with regard to their adhesive effect and their property, the thermal expansion of the carrier plate 11 on the one hand and the refrigerant line 13 on the other hand while maintaining the required holding force for the refrigerant line 13 on the Carrier board 11 must be able to be selected.
  • a refrigerant line with a circular cross section can also be used.
  • the structure according to the invention is also suitable for providing a condenser.
  • the refrigerant line and / or the carrier plate may have projections with which the hardened holding means cooperates in a form-fitting manner.
  • the refrigerant line and the carrier board can also be fixed and held together solely by the adhesive effect of the holding means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

This invention relates to an evaporator household refrigerating appliances such as a refrigerator and refrigerator-freezer combis or the like, with a pipe-like, refrigerant line (13) which is embodied at least approximately in a heat conducting manner and is at least approximately shaped like a zig-zag and substantially in contact in a heat-conductive manner with a more or less heat-conducting carrier tray (11). It also comprises an aluminum carrier tray to which a zig-zag shaped aluminum pipe is subsequently brought into thermal by means of welding or sticking using an aluminum adhesive tape. The disadvantage of securing the pipe in this manner is the relatively high amount of labor involved and the unreliable thermal contact between the pipe and the carrier tray. According to the invention, the pipe is fixed to the carrier tray by foaming using polyurethane foam.

Description

Verdampfer für ein HaushaltskältegerätEvaporator for a household refrigerator
Die Erfindung betrifft einen Wärmetauscher, insbesondere einen Verdampfer für ein Haushaltskältegerät, wie einen Kühlschrank, eine Kühl- und Gefrierkombination oder dergleichen, mit einer rohrartigen, wenigstens annähernd wärmeleitend aus- gebildeten Kältemittelleitung, welche zumindest annähernd mäanderartig geformt und in zumindest weitestgehend wärmeleitenden Kontakt auf einer wenigstens annähernd wärmeleitend ausgebildeten Trägerplatine festgesetzt ist.The invention relates to a heat exchanger, in particular an evaporator for a domestic refrigerator, such as a refrigerator, a fridge-freezer or the like, with a tubular, at least approximately heat-conducting refrigerant line, which is at least approximately meandering in shape and in at least largely heat-conducting contact on one at least approximately heat-conducting support plate is fixed.
Bei in Haushaltskühlschränken zur Anwendung kommenden Verdampfern ist es bekannt, deren zur Führung von Kältemittel dienende Kältemittelkanäle nach spanlose Formgebung in eine Aluminiumplatine unter Anwendung des Rollbond- oder Z- Bond-Verfahrens einzubringen. Darüber hinaus finden bei Kühlschränken auch Verdampfer Anwendung, welche aus einer Aluminiumträgerplatine und einem separat vorgefertigtem mäanderartig geformten Aluminiumrohr zusammengesetzt sind, welches auf der Trägerplatine, in wärmeleitendem Kontakt zu dieser, befestigt ist. Zum Zwecke der Befestigung des Kältemittelführungsrohres an der Trägerplatine ist es beispielsweise bekannt, das vorgefertigte Rohr auf der Trägerplatine anhand einer Lötverbindung festzusetzen. Hierzu ist beispielsweise einer der Lötpartner mit einer ais Lot dienenden Schicht überzogen, welche beim Erwärmen dieses Lötpart- ners mit dem anderen, zur Verlötung vorbehandelten Lötpartner eine Verbindung eingeht, wodurch die Trägerplatine mit dem vorgeformten Rohr in wärmeleitenden Kontakt verbunden ist. Diese Art der Befestigung der Kältemittelrohrleitung auf der Trägerplatine ist nicht nur fertigungsaufwendig und somit kostenträchtig, sondern birgt zudem auch die Gefahr in sich, daß die wärmeleitende Verbindung beider Verdampferbestandteile auch dem Einfluß der Arbeitssorgfalt des Fertigungspersonals unterliegt. Eine weitere in der Praxis verfolgte Möglichkeit, die Kältemittelrohrleitung aus Aluminium mit der Aluminiumträgerplatine wärmeleitend zu verbinden, ist durch die Verwendung eines alumiumkaschierten Klebebandes bereitgestellt, mit Hilfe welchem das zum Zwecke des wärmeleitenden Kontakts die auf die Alumini- umträgerplatine mit einer gewissen Andruckkraft gedrückte Rohrleitung entlang seines Verlaufes überlappt und mit den überlappenden Enden des Klebebandes an der Trägerplatine festgesetzt. Auch diese Art der Befestigung setzt eine fertigungstechnisch aufwendige Vorbehandlung beider Verbindungspartner zumindest in Hinblick auf eine gewisse Staub- und Fettfreiheit voraus, um eine zur Schaffung des wärmeleitenden Kontaktes zwischen beiden Bauteilen gewährleistende Haltekraft, erzeugt durch das aluminiumkaschierte Klebeband, erreichen zu können. Ferner ist das großseriengerechte positionsrichtige Aufbringen des Klebebandes nur mit erheblichen fertigungstechnischen Aufwand möglich.In the case of evaporators used in household refrigerators, it is known to introduce their refrigerant channels, which are used to guide refrigerant, after cutting without shaping, into an aluminum plate using the roll-bond or Z-bond method. In addition, evaporators are also used in refrigerators, which are composed of an aluminum carrier plate and a separately prefabricated meandering shaped aluminum tube, which is fastened to the carrier plate in heat-conducting contact therewith. For the purpose of fastening the refrigerant guide tube to the carrier board, it is known, for example, to fix the prefabricated tube on the carrier board using a soldered connection. For this purpose, for example, one of the soldering partners is coated with a layer serving as solder, which, when this soldering partner is heated, forms a connection with the other soldering partner pretreated for soldering, as a result of which the carrier board is connected to the preformed tube in heat-conducting contact. This type of attachment of the refrigerant pipeline to the carrier board is not only expensive to manufacture and therefore costly, but also entails the risk that the heat-conducting connection between the two evaporator components is also subject to the influence of the workmanship of the production personnel. Another possibility pursued in practice to connect the aluminum refrigerant pipeline to the aluminum carrier board in a heat-conducting manner is provided by the use of an aluminum-coated adhesive tape, with the aid of which the heat-conducting contact that is applied to the aluminum umträgerplatine with a certain pressure force overlapped pipeline along its course and fixed with the overlapping ends of the adhesive tape on the carrier board. This type of fastening also requires a technically complex pretreatment of both connection partners, at least with regard to a certain freedom from dust and grease, in order to be able to achieve a holding force, created by the aluminum-coated adhesive tape, that ensures the heat-conducting contact between the two components. Furthermore, it is only possible to apply the adhesive tape in the correct position for large-scale production with considerable manufacturing outlay.
Der Erfindung liegt die Aufgabe zugrunde, bei einem Wärmetauscher gemäß dem Oberbegriff des Anspruches 1 mit einfachen konstruktiven Maßnahmen und die Nachteile des Standes der Technik zu vermeiden.The invention has for its object to avoid the disadvantages of the prior art in a heat exchanger according to the preamble of claim 1 with simple design measures.
Diese Aufgabe wird gemäß der Erfindung dadruch gelöst, daß die Kältemittelleitung form-/ oder kraftschlüssig durch ein zumindest im wesentlichen adhäsiv wirkendes, in flüssigem Ausgangszustand verarbeitetes Haltemittel gehalten ist, welches im ausgehärteten Zustand zumindest im wesentlichen die Befestigung der Kältemittelleitung an der Trägerplatine bewirkt, wobei das Haltemittel vom Kontaktbereich der Kältemittelleitung mit der Trägerplatine zumindest im wesentlichen ferngehalten ist.This object is achieved according to the invention in that the refrigerant line is held positively or non-positively by an at least substantially adhesive, processed in the liquid starting state holding means, which in the hardened state causes at least substantially the attachment of the refrigerant line to the carrier board, wherein the holding means is at least substantially kept away from the contact area of the refrigerant line with the carrier board.
Durch die Verwendung eines bei seiner Verarbeitung flüssigen Haltemittels zur Befestigung beispielsweise einer aus Aluminium gefertigten Rohrleitung auf einer z. B. ebenfalls aus Aluminium gebildeten Trägerplatine ist sichergestellt, daß das flüssige Haltemittel der Kontur der mäanderartig gekrümmten Kältemittelleitung zu folgen vermag. Auf diese Weise ist die Kältemittelleitung über ihre gesamte Länge durch die adhäsive Wirkung des Haltemittels besonders funktionssicher in wärmeleitenden Kontakt mit der Trägerplatine gehalten ist, wobei die gesamte Haltefläche der Trägerplatine zur Halterung der vor dem Aufbringen des Haltemittels in wärmeleitenden Kontakt unter einer gewissen Haltekraft auf die Haltefläche aufgedrückte Rohrleitung mit flüssigem Haltemittel überzogen sein kann. Durch das Andrücken der vorgefertigten Kältemittelleitung auf die Haltefläche der Trägerplatine ist zugleich sichergestellt, daß das flüssige Haltemittel von dem den Wärmeaustausch bewirkenden Kontaktbereich zwischen der Kältemittelrohrleitung und der Trägerplatine ferngehalten ist. Durch die Schaffung eines Art Überzuges auf der Haltefläche der Trägerplatine mit dem flüssigen Haltemittel ist die Kältemittelrohrleitung nach dem Aushärtevorgang des flüssigen Haltemittels in dieses zumindest weitestge- hend eingebettet, so daß die Kältemittelrohrleitung einerseits in einem besonders intensiven wärmeleitenden Kontakt und andererseits besonders positionsgenau an der Haltefläche der Trägerplatine dauerhaft festgesetzt ist. Durch den Einsatz eines adhäsiv wirkenden flüssigen Haltemittels kann zudem ohne Verlust an Haltekraft zwischen den beiden zu verbindenden Bauteilen ein aufwendiger Reinigungsvorgang dieser beiden Bauteile, z. B. wie er für eine Lötverbindung erforderlich ist, vermieden werden. Die bei den bekannten Herstellverfahren eines Verdampfers, wie z. B. beim Rollbond- und Z-Bond-Verfahren oder beim Anlöten einer Kältemittel- rohrleitung auf einer Trägerplatine auftretenden Probleme, nämlich herstellbedingt hervorgerufene Verwerfungen des Verdampfers sind bei dem erfindungsgemäßen Verdampfer zumindest weitestgehend vermieden. Aus diesem Grund ergibt sich eine besonders sichere flächige und wärmeleitende Anlage der als Cold-Wall-Ver- dampfer eingesetzten Verdampferplatine an der Wärmeisolationsseite eines Kühl- gutbehälters.By using a liquid during its processing holding means for fastening, for example, a pipe made of aluminum on a z. B. also made of aluminum carrier plate ensures that the liquid holding agent is able to follow the contour of the meandering curved refrigerant line. In this way, the entire length of the refrigerant line is held in a functionally reliable manner in heat-conducting contact with the carrier board by the adhesive effect of the holding means, the entire holding surface of the carrier board for holding the before the application of the holding means in heat-conducting contact under a certain holding force on the Holding surface pressed pipe can be coated with liquid holding agent. Pressing the prefabricated refrigerant line onto the holding surface of the carrier board also ensures that the liquid holding agent is kept away from the heat exchange contact area between the refrigerant pipeline and the carrier board. By creating a kind of coating on the holding surface of the carrier plate with the liquid holding means, the refrigerant pipeline is at least largely embedded in it after the hardening process of the liquid holding means, so that the refrigerant pipeline is permanently fixed on the one hand in a particularly intensive heat-conducting contact and on the other hand in a particularly precise position on the holding surface of the carrier plate. Through the use of an adhesive liquid holding agent, an elaborate cleaning process of these two components, e.g. B. how it is required for a soldered connection, be avoided. The in the known manufacturing process of an evaporator, such as. B. in the Rollbond- and Z-Bond method or when soldering a refrigerant pipeline on a carrier board, problems caused by warping of the evaporator caused by manufacturing are at least largely avoided in the evaporator according to the invention. For this reason, there is a particularly safe flat and heat-conducting system for the evaporator board used as a cold wall evaporator on the heat insulation side of a refrigerated goods container.
Besonders sicher ohne zusätzliche Hilfsmittel gehalten ist die vorgefertigte Kältemittelleitung an der Haltefläche der Trägerplatine bei einem Verdampfer mit einer Kältemittelleitung, welche einen deformierten kreisförmigen Querschnitt mit wenig- stens einer annähernd ebenen Anlagefläche aufweist, mit welcher die Kältemittelleitung zumindest weitgehend wärmeleitend an der Trägerplatine anliegt, wenn nach einer bevorzugten Ausführungsform des Gegenstandes der Erfindung ist, daß die Oberfläche Haltemittel im ausgehärteten Zustand über dem Flächenschwerpunkt der deformierten Kreisquerschnittsfläche liegen. Durch die Ausbildung der Kältemittelrohrleitung mit z. B. einem D-förmigen Querschnitt oder einem ovalen Querschnitt und der Bemessung der Schichthöhe des ausgehärteten Haltemittels ist die Kältemittelrohrleitung ohne zusätzliche Maßnahmen formschlüssig an der Haltefläche der Trägerplatine gehalten. Zusätzlich bewirken die Haltemittel im ausgehärteten Zustand durch ihre Volumenkontraktion, daß die Rohrleitung unter Vor- Spannung an die Haltefläche der Trägerplatine zur Erreichung eines besonders intensiven Wärmeübergangs zwischen dieser und der Kältemittelrohrleitung gepreßt ist. Außerdem ist durch die Anformung einer ebenen Anlagefläche an der Kältemittelrohrleitung eine besonders intensive und definierte Anlage der Kältemittelrohrlei- tung an der Haltefläche der Trägerplatine zur Herbeiführung eines besonders intensiven Wärmeaustausches gewährleistet.The prefabricated refrigerant line is held particularly securely without additional aids on the holding surface of the carrier board in an evaporator with a refrigerant line which has a deformed circular cross section with at least one approximately flat contact surface with which the refrigerant line lies at least largely in a heat-conducting manner on the carrier board when According to a preferred embodiment of the object of the invention, the surface holding means in the hardened state lie above the center of gravity of the deformed circular cross-sectional area. By designing the refrigerant pipe with z. B. a D-shaped cross section or an oval cross section and the dimensioning of the layer height of the hardened holding means, the refrigerant pipeline is held in a positive manner on the holding surface of the carrier board without additional measures. In addition, in the hardened state, the holding means, by their volume contraction, cause the pipeline to be pressed against the holding surface of the support plate under pretension in order to achieve a particularly intensive heat transfer between the latter and the refrigerant pipeline. In addition, the formation of a flat contact surface on the refrigerant pipeline means that the refrigerant pipeline system is particularly intensive and defined. guaranteed on the holding surface of the carrier board to bring about a particularly intensive heat exchange.
Unter oval soll hier eine entlang einer Symmetrieachse gestreckte Fläche mit an den Enden gekrümmten Begrenzungslinien verstanden sein. Solche Flächengebilde können beispielsweise eine Ellipse oder zwei einander zugekehrte Halbkreise oder Halbellipsen mit einem dazwischen liegenden Rechteck sein.Oval is understood here to mean a surface stretched along an axis of symmetry with boundary lines curved at the ends. Such planar structures can be, for example, an ellipse or two semicircles facing one another or semi-ellipses with a rectangle in between.
Besonders einfach herstellbar ist die ebene Anlagefläche an der Kältemittelrohrleitung, wenn nach einer nächsten vorteilhaften Ausgestaltung des Gegenstandes der Erfindung vorgesehen ist, daß der deformierte kreisförmige Querschnitt der Käl- temittelleitung zumindest annähernd halbkreisförmig ausgebildet ist.The flat contact surface on the refrigerant pipeline is particularly easy to produce if, according to a next advantageous embodiment of the subject of the invention, it is provided that the deformed circular cross section of the refrigerant line is at least approximately semicircular.
Entsprechend einer weiteren bevorzugten Ausführung des Gegenstandes der Erfindung ist vorgesehen, daß die Mittel als in flüssigem Ausgangszustand verarbeiteter wärmehemmender Werkstoff ausgebildet sind.According to a further preferred embodiment of the subject matter of the invention, it is provided that the means are designed as heat-inhibiting material processed in the liquid starting state.
Durch eine in derartige Befestigung der Kältemittelrohrleitung an der Haltefläche der Trägerplatine ist die Kälteabgabe letzterer besonders zielgerichtet beeinflußbar. Ein auf diese Weise hergestellter Verdampfer eignet sich besonders zum Einsatz als sog. Cold-Wall-Verdampfer, da der wärmehemmende Werkstoff die Wärmeiso- lation der mit dem Cold-Wall-Verdampfer ausgestatteten Wand allenfalls unwesentlich vermindert ist.The refrigerant release of the latter can be influenced in a particularly targeted manner by fastening the refrigerant pipeline in this way to the holding surface of the carrier board. An evaporator produced in this way is particularly suitable for use as a so-called cold-wall evaporator, since the heat-inhibiting material reduces the heat insulation of the wall equipped with the cold-wall evaporator at most insignificantly.
Nach einer nächsten bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß der wärmehemmende Werkstoff aus aufgeschäumten Wärmeisolationsmaterial gebildet ist.According to a next preferred embodiment of the object of the invention it is provided that the heat-inhibiting material is formed from foamed heat insulation material.
Durch den Einsatz von aufschäumenden Wärmeisolationsmaterial zur Befestigung der Kältemittelrohrleitung an der Haltefläche der Trägerplatine ist auf einfache Weise ein Verdampfer hergestellt, welcher besonders zum Einsatz als sog. Cold-Wall- Verdampfer bei einem Haushaltskühlschrank geeignet ist. Zudem erfährt die mit dem Cold-Wall-Verdampfer bestückte Kühlschrankwand allenfalls eine vernachlässigbare Minderung an Wärmeisolationsvermögen. Durch den beim Aufschäumen des Wärmeisolationsmaterials entstehenden Druck innerhalb eines die Kältemittelrohrleitung an die Trägerplatine pressenden Andruckwerkzeuges ist zu- dem sichergestellt, daß das Wärmeisolationsmaterial die außerhalb des Kontaktbereiches zwischen der Trägerplatine und der Kältemittelrohrleitung liegenden Freiflächen zumindest in überwiegendem Maße benetzt und dadurch eine besonders intensive Halterung der Kältemittelrohrleitung an der Trägerplatine erzielt ist.The use of foaming heat insulation material to fasten the refrigerant pipeline to the holding surface of the carrier plate makes an evaporator in a simple manner, which is particularly suitable for use as a so-called cold wall evaporator in a household refrigerator. In addition, the refrigerator wall equipped with the cold wall evaporator experiences at most a negligible reduction in thermal insulation capacity. The pressure that arises when the thermal insulation material is foamed within a pressure tool that presses the refrigerant pipeline against the carrier board means that This ensures that the heat insulation material at least predominantly wets the open areas lying outside the contact area between the carrier board and the refrigerant pipeline, thereby achieving a particularly intensive retention of the refrigerant pipeline on the carrier board.
Entsprechend einer weiteren bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß das Wärmeisolationsmaterial aus Polyurethanschaum gebildet ist.According to a further preferred embodiment of the object of the invention, it is provided that the heat insulation material is formed from polyurethane foam.
Durch die adhäsive Wirkung des Polyurethanschaums im flüssigen Zustand einer- seits und der verhältnismäßig hohen mechanischen Festigkeit dieses Schaummaterials andererseits ist die Kältemittelrohrleitung an der Verdampferplatine insbesondere in der Großserienfertigung prozeßsicher und mechanisch lagestabil in wärmeleitendem Kontakt zur Trägerplatine gehalten.Because of the adhesive effect of the polyurethane foam in the liquid state on the one hand and the relatively high mechanical strength of this foam material on the other hand, the refrigerant pipeline on the evaporator board is kept process-reliable and mechanically stable in thermal contact with the carrier board, especially in large-scale production.
Besonders sicher positionsstabil gehalten ist die Kältemittelleitung auf der Trägerplatine, wenn nach einer weiteren vorteilhaften Ausgestaltung der Erfindung vorgesehen ist, daß die Haltemittel die Kältemittelleitung zumindest abschnittsweise entlang ihres mäanderartigen Verlaufes überdecken.The refrigerant line on the carrier board is held in a particularly stable position if, according to a further advantageous embodiment of the invention, it is provided that the holding means cover the refrigerant line at least in sections along its meandering course.
Entsprechend einer nächsten bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß die abschnittsweise Überdeckung der Kältemittelleitung durch ein zumindest annähernd netzähnliches Flächenmuster erzeugt ist.According to a next preferred embodiment of the subject matter of the invention, it is provided that the partial coverage of the refrigerant line is generated by an at least approximately network-like surface pattern.
Durch die netzartige Überdeckung der Kältemittelleitung an ihrer von der Trägerpla- tine abgewandten Außenseite ist gleichzeitig eine ausreichende Befestigung der der Kältemittelrohrleitung an der Trägerplatine gewährleistet und die Aushärtezeit von beispielweise als Haltemittel zum Einsatz kommenden aufschäumenden Wärmeisolationsmaterials durch den minimierten Wirkstoffeinsatz deutlich herabgesetzt und somit die Fertigungszeit des Verdampfers optimiert.Due to the net-like covering of the refrigerant line on its outside facing away from the carrier board, sufficient fastening of the refrigerant pipeline to the carrier board is guaranteed at the same time, and the curing time of foaming heat insulation material used, for example, as a holding means is significantly reduced by the minimized use of active agents, and thus the manufacturing time of the Optimized evaporator.
Gemäß einer letzten bevorzugten Ausführungsform des Gegenstandes der Erfindung ist vorgesehen, daß die Kältemittelleitung und die Haltemittel an ihrer von der Trägerplatine abgewandten Seite von einem wenigstens annähernd die Abmessun- gen der Trägerplatine aufweisenden folienartigen Werkstoff abgedeckt sind, welcher von dem ausgehärteten Haltemittel gehalten ist.According to a last preferred embodiment of the subject matter of the invention, it is provided that the refrigerant line and the holding means on their side facing away from the carrier plate have at least approximately the dimensions are covered against the carrier board having film-like material which is held by the hardened holding means.
Durch die vollflächige Abdeckung des zur Befestigung der Kältemittelrohrleitung an der Trägerplatine dienenden Haltemittels, z. B. in Form von aufschäumenden Wär- meisolationsmatenal ist das an sich im ausgehärteten Zustand poröse Wärmeisolationsmaterial gegen mechanischen Abrieb, z. B. hervorgerufen durch die Handhabung des Verdampfers bis zu seiner Montage im Kühlschrank, geschätzt. Derartig abgedeckte Verdampfer eignen sich zudem auch zum Einsatz als sog. Rückwandverdampfer innerhalb des Kühlraumes eines Kühlschranks. Besonders geeignet zum Abdecken des aufschäumenden Wärmeisolationsmaterials ist eine als Wasserdampfsperre dienende Abschlußfolie.Due to the full coverage of the holding means used to fasten the refrigerant pipeline to the carrier board, e.g. B. in the form of foaming thermal insulation material is the per se in the cured state porous thermal insulation material against mechanical abrasion, eg. B. caused by the handling of the evaporator until it is installed in the refrigerator, estimated. Evaporators covered in this way are also suitable for use as so-called rear-wall evaporators within the refrigerator compartment of a refrigerator. A closing film serving as a water vapor barrier is particularly suitable for covering the foaming heat insulation material.
Die Erfindung ist in der nachfolgenden Beschreibung anhand eines in der beigefügten Zeichnung vereinfacht dargestellten Ausführungsbeispieles erläutert. Es zeigen:The invention is explained in the following description with reference to an embodiment shown in simplified form in the accompanying drawing. Show it:
Fig. 1 : einen erfindungsgemäßen platinenartigen Verdampfer in raumbildlicher Ansicht von vorne undFig. 1: a board-like evaporator according to the invention in a spatial view from the front and
Fig. 2: ausschnittsweise den Verdampfer nach Fig. 1 in Schnittdarstellung gemäß der Schnittlinie II - II.2: a section of the evaporator according to FIG. 1 in a sectional view along the section line II - II.
Gemäß Figur 1 ist ein platinenartiger, beispielsweise als sog. Cold-Wall-Verdampfer Anwendung findender Verdampfer 10 gezeigt, welcher eine aus wärmeleitendem Material, wie beispielsweise Aluminium oder auch korrosionsgeschütztem Stahlblech oder dergleichen, bestehende Trägerplatine 11 besitzt. Die Trägerplatine 11 weist an einer ihrer großflächigen Seiten eine Haltefläche 12 auf, auf welcher eine mäanderaartig geformte, als Kältemittelleitung 13 dienende Rohrleitung aus wärmeleitendem Werkstoff, wie beispielsweise Aluminium oder korrosionsgeschütztem Stahl oder dergleichen in wämeleitendem Kontakt aufliegt. Zur Erzeugung eines optimierten Wärmeübergangs von der Kältemittelleitung 13 auf die Trägerplatine 11 ist die ursprünglich einen kreisförmigen Querschnitt aufweisende Kältemittelleitung 13 hinsichtlich ihres Querschnittes derart deformiert, daß diese nach der Deformation im wesentlichen einen D-förmigen Querschnitt mit einer im wesentlichen ebe- nen Aufiagefläche 14 aufweist, mit welcher die Kältemittelleitung 13 in wärmeleitendem Kontakt mit der Trägerplatine 11 steht (siehe hierzu Fig. 2). Zur Befestigung der Kältemittelleitung 13 in wärmeleitendem Kontakt auf der Trägerplatinel 1 ist er- stere im vorliegenden Fall in ein als Haltemittel 15 dienendes, adhäsiv wirkendes Wärmeisolationsmaterial eingebettet, wodurch ein sandwichartiger Verdampferauf- bau erzeugt ist. Dieses wird in flüssigem Ausgangszustand zumindest auf den Bereich der Haltefläche 12 aufgetragen, welcher von der mäanderartig geformten, vor dem Auftrag des flüssigen Haltemittels 15 unter einer gewissen Vorsprungkraft auf die Trägerplatine 11 gedrückten Kältemittelleitung 13 eingenommen ist. Durch die auf die Kältemittelleitung 13 ausgeübte Vorspannkraft ist sowohl eine flächige, wärmeleitende Anlage der Kältemittelleitung 13 auf der Trägerplatine 11 sichergestellt, als auch verhindert, daß das in flüssiger Ausgangsform vorliegende Haltemittel 15 zwischen die Auflagefläche 14 und die entsprechenden Abschnitte der Haltefläche 12 eindringen kann. Dabei ist aber durch das zu Beginn seiner Verarbeitung in flüssigem Zustand vorliegende Haltemittel 15, sichergestellt daß durch dessen Fließfähigkeit die durch die mäanderartige Gestalt der Kältemittelleitung 13 geschaffenen Zwischenräume zumindest weitestgehend lunkerfrei verfüllt werden. Durch die Verfüllung ist die in das Haltemittel eingebettete Kältemittelleitung 13 aufgrund ihrer Querschnittsformgebung nach dem Aushärten des adhäsiv wirkenden Haltemittels 15 formschlüssig sowohl entlang der Haltefläche 12 als auch senkrecht dazu innerhalb des Haltemittels 15 festgesetzt. Die Halterung der Kältemittelleitung 13 innerhalb des Haltemittels 15 ist zusätzlich noch durch deren zumindest die Kältemittelleitung 13 vollkommen überziehendes netzartiges Flächenmuster 16 an ihrer der Haltefläche 12 gegenüberliegenden Fläche unterstützt. Durch die netzartige Oberflächenstruktur des Haltemittels 15 ist zugleich sichergestellt, daß die Kältemittel 13 an ihrer der Auflagefläche 14 gegenüberliegenden Seite nur partiell mit dem Haltemittel 15 abgedeckt ist, und somit ein Wärmetausch des in der Kältemittelleitung 14 zirkulierenden Kältemittels nicht nur zur Trägerplatine 11 hin sondern auch gegenüberliegend dazu möglich ist, so daß sich der Verdampfer 10 auch zum Einsatz für einen beispielsweise freihängend in einem Kühlraum eines Kühl- schrankes angeordneten, sog. Rückwandverdampfer eignet.According to FIG. 1, a circuit board-like evaporator 10, which is used, for example, as a so-called cold wall evaporator, is shown, which has a carrier plate 11 made of heat-conducting material, such as aluminum or also corrosion-protected steel sheet or the like. The carrier plate 11 has on one of its large-area sides a holding surface 12 on which a meandering-shaped, refrigerant line 13 pipeline made of heat-conducting material, such as aluminum or corrosion-protected steel or the like, rests in heat-conducting contact. In order to generate an optimized heat transfer from the refrigerant line 13 to the carrier plate 11, the cross section of the refrigerant line 13, which originally had a circular cross section, is deformed in such a way that, after the deformation, it has essentially a D-shaped cross section with an essentially flat cross section. NEN mounting surface 14, with which the refrigerant line 13 is in thermally conductive contact with the carrier plate 11 (see FIG. 2). To fix the refrigerant line 13 in heat-conducting contact on the carrier plate 1, the former is embedded in an adhesive heat-insulating material serving as a holding means 15 in the present case, whereby a sandwich-like evaporator structure is produced. In the initial liquid state, this is applied at least to the area of the holding surface 12 which is taken up by the meandering shaped refrigerant line 13, which is pressed onto the carrier plate 11 under a certain projection force before the application of the liquid holding means 15. The prestressing force exerted on the refrigerant line 13 ensures both a flat, thermally conductive contact of the refrigerant line 13 on the carrier board 11 and also prevents the holding means 15, which is in the liquid starting form, from being able to penetrate between the contact surface 14 and the corresponding sections of the holding surface 12. In this case, however, the holding means 15 present in the liquid state at the beginning of its processing ensures that its gaps ensure that the gaps created by the meandering shape of the refrigerant line 13 are at least largely void-free. As a result of the backfilling, the refrigerant line 13 embedded in the holding means is positively fixed both along the holding surface 12 and perpendicularly to it within the holding means 15 due to its cross-sectional shape after the adhesive holding means 15 has hardened. The holding of the refrigerant line 13 within the holding means 15 is additionally supported by its net-like surface pattern 16, which at least completely covers the refrigerant line 13, on its surface opposite the holding surface 12. The network-like surface structure of the holding means 15 also ensures that the refrigerant 13 on its side opposite the support surface 14 is only partially covered with the holding means 15, and thus a heat exchange of the refrigerant circulating in the refrigerant line 14 not only towards the carrier plate 11 but also opposite is possible, so that the evaporator 10 is also suitable for use for a so-called rear wall evaporator, for example, freely suspended in a cooling chamber of a refrigerator.
Neben dem im Ausführungsbeispiel als Haltemittel 15 beschriebenen Wärmeisolationsmaterial, wie aufschäumender Polyurethanschaum oder dergleichen, eignen sich auch gießfähige duroplastische Kunststoffe in Gestalt von Form- und Gieß- massen zur Befestigung der Kältemittelleitung 13 an der Trägerplatine 11 , wobei die duroplastischen Gieß- und Formmassen im Hinblick auf ihre adhäsive Wirkung und ihre Eigenschaft, die Wärmeausdehnung der Trägerplatine 11 einerseits und der Kältemittelleitung 13 andererseits unter Beibehaltung der geforderten Haltekraft für die Kältemittelleitung 13 an der Trägerplatine 11 gewährleisten zu können, auszu- wählen sind.In addition to the heat insulation material described in the exemplary embodiment as holding means 15, such as foaming polyurethane foam or the like, pourable thermosetting plastics in the form of molds and castings are also suitable. measures for fastening the refrigerant line 13 to the carrier plate 11, the thermosetting casting and molding compounds with regard to their adhesive effect and their property, the thermal expansion of the carrier plate 11 on the one hand and the refrigerant line 13 on the other hand while maintaining the required holding force for the refrigerant line 13 on the Carrier board 11 must be able to be selected.
Alternativ zu der im Ausführungsbeispiel gezeigten Kältemittelleitung 13 kann auch eine Kältemittelleitung mit kreisförmigem Querschnitt Anwendung finden. Außer für die Ausbildung als Verdampfer eignet sich der erfindungsgemäße Aufbau auch für die Bereitstellung eines Verflüssigers.As an alternative to the refrigerant line 13 shown in the exemplary embodiment, a refrigerant line with a circular cross section can also be used. In addition to training as an evaporator, the structure according to the invention is also suitable for providing a condenser.
Möglich ist auch, daß die Kältemittelleitung und/oder die Trägerplatine Vorsprünge aufweist, mit welchen das ausgehärtete Haltemittel formschlüssig zusammenwirkt.It is also possible for the refrigerant line and / or the carrier plate to have projections with which the hardened holding means cooperates in a form-fitting manner.
Die Kältemittelleitung und die Trägerplatine können auch ausschließlich durch die adhäsive Wirkung des Haltemittels zueinander fixiert und zusammengehalten sein. The refrigerant line and the carrier board can also be fixed and held together solely by the adhesive effect of the holding means.

Claims

Patentansprüche claims
1 . Verdampfer für ein Haushaltskältegerät, wie einen Kühlschrank, eine Kühl- und Gefrierkombination oder dergleichen mit einer rohrartigen, wenigstens annähernd wärmeleitend ausgebildeten Kältemittelleitung, welche zumindest annä- hernd mäanderartig geformt und in zumindest weitestgehend wärmeleitenden1 . Evaporator for a domestic refrigeration device, such as a refrigerator, a fridge-freezer or the like, with a tubular, at least approximately heat-conducting refrigerant line, which is at least approximately meandering and at least largely heat-conducting
Kontakt auf einer wenigstens annähernd wärmeleitend ausgebildeten Trägerplatine festgesetzt ist, dad u rch gekennzeich net, daß die Kältemittelleitung (13) form -und/oder kraftschlüssig durch ein zumindest annähernd adhäsiv wirkendes, in flüssigem Ausgangszustand verarbeitetes Haltemittel (15) gehalten ist, welches nach seinem Aushärtevorgang zumindest im wesentlichen die Befestigung der Kältemittelleitung (13) an der Trägerplatine (1 1 ) bewirkt, wobei das Haltemittel von dem Kontaktbereich zwischen der Kältemittelleitung (13) und der Trägerplatine (1 1 ) zumindest im wesentlichen ferngehalten ist.Contact is fixed on an at least approximately heat-conducting support plate, so that the refrigerant line (13) is positively and / or non-positively held by an at least approximately adhesive holding agent (15) that is processed in the liquid initial state and is held according to its Hardening process at least substantially causes the attachment of the refrigerant line (13) to the carrier board (1 1), the holding means being kept at least substantially away from the contact area between the refrigerant line (13) and the carrier board (1 1).
2. Verdampfer mit einer Kältemittelleitung, welche einen deformierten kreisförmigen Querschnitt mit wenigstens einer annähernd ebenen Anlagefläche aufweist, mit welcher die Kältemittelleitung zumindest weitestgehend wärmeleitend an der Trägerplatine anliegt, nach Anspruch 1 , dadurch gekennzeichnet, daß die Haltemittel (15) mit ihrer ausgehärteten Oberfläche über dem Flächenschwer- punkt der deformierten Kreisquerschnittsfläche der Kältemittelleitung (13) liegen.2. Evaporator with a refrigerant line, which has a deformed circular cross-section with at least one approximately flat contact surface with which the refrigerant line is at least largely thermally conductive on the carrier board, according to claim 1, characterized in that the holding means (15) with their hardened surface over the center of gravity of the deformed circular cross-sectional area of the refrigerant line (13).
3. Verdampfer nach Anspruch 2, dadurch gekennzeichnet, daß der deformierte kreisförmige Querschnitt der Kältemittelleitung (13) zumindest annähernd halb- kreisförmig ausgebildet ist.3. Evaporator according to claim 2, characterized in that the deformed circular cross section of the refrigerant line (13) is at least approximately semi-circular.
4. Verdampfer nach einem der Ansprüche 1 - 3, dadurch gekennzeichnet, daß die Haltemittel (15) als im flüssigen Ausgangszustand verarbeiteter, wärmehemmender Werkstoff ausgebildet sind. 4. Evaporator according to one of claims 1-3, characterized in that the holding means (15) are constructed as a heat-inhibiting material processed in the liquid starting state.
5. Verdampfer nach Anspruch 4, dadurch gekennzeichnet, daß der wärmehemmende Wirkstoff aus aufgeschäumtem Wärmeisolationsmaterial gebildet ist.5. Evaporator according to claim 4, characterized in that the heat-inhibiting active ingredient is formed from foamed heat insulation material.
6. Verdampfer nach Anspruch 5, dadurch gekennzeichnet, daß das Wärmeisola- tionsmaterial aus aufschäumbarem Polyurethanschaum gebildet ist.6. Evaporator according to claim 5, characterized in that the heat insulation material is formed from foamable polyurethane foam.
7. Verdampfer nach einem der Ansprüche 1 - 6, dadurch gekennzeichnet, daß die Haltemittel (15) die Kältemittelleitung (13) zumindest abschnittsweise entlang ihres mäanderartigen Verlaufes überdecken.7. Evaporator according to one of claims 1-6, characterized in that the holding means (15) cover the refrigerant line (13) at least in sections along its meandering course.
8. Verdampfer nach Anspruch 7, dadurch gekennzeichnet, daß die abschnittsweise Überdeckung der Kältemittelleitung (13) durch ein zumindest annähernd netzartiges Flächenmuster (16) erzeugt ist.8. Evaporator according to claim 7, characterized in that the partial coverage of the refrigerant line (13) is generated by an at least approximately net-like surface pattern (16).
9. Verdampfer nach einem der Ansprüche 1 - 8, dadurch gekennzeichnet, daß die Kältemittelleitung (13) und die Haltemittel (15) an ihrer von der Trägerplatine (11) abgewandten Seiten von einem wenigstens annähernd die Abmessungen der Trägerplatine (11 ) aufweisenden folienartigen Werkstoff abgedeckt ist, welcher von dem ausgehärteten Haltemittel (15) gehalten ist. 9. Evaporator according to one of claims 1-8, characterized in that the refrigerant line (13) and the holding means (15) on their sides facing away from the carrier plate (11) from an at least approximately the dimensions of the carrier plate (11) having film-like material is covered, which is held by the hardened holding means (15).
EP00956433A 1999-08-16 2000-08-11 Household refrigerator Expired - Lifetime EP1307693B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19938773A DE19938773A1 (en) 1999-08-16 1999-08-16 Evaporator for a household refrigerator
DE19938773 1999-08-16
PCT/EP2000/007845 WO2001013051A1 (en) 1999-08-16 2000-08-11 Evaporator for a household refrigerator

Publications (2)

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EP1307693A1 true EP1307693A1 (en) 2003-05-07
EP1307693B1 EP1307693B1 (en) 2006-06-14

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EP00956433A Expired - Lifetime EP1307693B1 (en) 1999-08-16 2000-08-11 Household refrigerator

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EP (1) EP1307693B1 (en)
CN (1) CN1153036C (en)
AT (1) ATE330189T1 (en)
BR (1) BR0013286A (en)
DE (2) DE19938773A1 (en)
ES (1) ES2265967T3 (en)
TR (1) TR200200091T2 (en)
WO (1) WO2001013051A1 (en)

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DE50013003D1 (en) 2006-07-27
CN1370263A (en) 2002-09-18
ES2265967T3 (en) 2007-03-01
CN1153036C (en) 2004-06-09
WO2001013051A1 (en) 2001-02-22
TR200200091T2 (en) 2003-01-21
DE19938773A1 (en) 2001-02-22
ATE330189T1 (en) 2006-07-15
BR0013286A (en) 2002-04-23
EP1307693B1 (en) 2006-06-14

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