EP2881514B1 - Household appliances such as a laundry dryer, a dishwasher or a washer-dryer having a heat pump unit - Google Patents

Household appliances such as a laundry dryer, a dishwasher or a washer-dryer having a heat pump unit Download PDF

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Publication number
EP2881514B1
EP2881514B1 EP14192758.2A EP14192758A EP2881514B1 EP 2881514 B1 EP2881514 B1 EP 2881514B1 EP 14192758 A EP14192758 A EP 14192758A EP 2881514 B1 EP2881514 B1 EP 2881514B1
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EP
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Prior art keywords
heat exchanger
flow channel
block element
elements
dryer
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EP14192758.2A
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German (de)
French (fr)
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EP2881514A1 (en
EP2881514B8 (en
Inventor
Frank Schiwy
Christof Kruschinski
Patrick Grawe
Rainer Drösler
Adriana Zmuda
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Miele und Cie KG
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Miele und Cie KG
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Publication of EP2881514B8 publication Critical patent/EP2881514B8/en
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/24—Condensing arrangements

Definitions

  • the invention relates to a household appliance such as a tumble dryer, a dishwasher or a washer-dryer with a heat pump device whose heat exchanger comprises a loop system guided by lamellae and wherein the heat exchanger for cooling and / or heating a process air stream is arranged in a flow channel and wherein the side of the heat exchanger Shields are arranged, which consist of molded body elements and which substantially fill a laterally lying in the flow channel free space or lateral cavity of the heat exchanger to the flow channel walls.
  • a tumble dryer of the type mentioned above is for example from the EP 2 527 528 A1 or EP 2 549 008 A1 known.
  • a fin heat exchanger known.
  • the lamella exchanger here has a number, usually metallic lamellae, which are arranged parallel to each other.
  • the fins are penetrated by one or more heat transfer tubes, here coolant tubes.
  • a coolant flows through the coolant tubes while a gaseous medium to be cooled flows through the free space between the slats.
  • the heat transfer tubes exchange heat with the fins, which in turn exchange heat with the flowing gas medium.
  • a heat exchanger which here comprises a condenser and an evaporator, the process air flow in a heat dryer on the one hand cooled and on the other hand reheated.
  • the heat exchanger as such is located here in the process air duct, through which the process air flows.
  • side plates are used, which are already integrated by the heat exchanger manufacturer. The side plates here reduce the inflow surface directly on the lamellae.
  • the heat exchanger comprising fins guided tube loops.
  • the heat exchanger is arranged for cooling and / or heating a process air stream in a flow channel with laterally arranged shields.
  • a tumble dryer in which the lateral shields are formed by alignment elements.
  • the invention thus raises the problem, a household appliance such as a dryer with a heat exchanger in such a way that overcomes the disadvantages, in particular the efficiency of the heat pump dryer should be optimally guaranteed in operation, the process air to the largest possible share by the Slats of the heat exchanger is passed.
  • the advantages achieved by the invention are that instead of side plates made of galvanized sheet molding body elements are used, which consist of expanded polystyrene or polystyrene.
  • the shaped body elements in this case fill the free space in the flow channel accordingly, so that the most possible positive positioning of the heat exchanger is achieved in the flow channel.
  • the molded body elements are attached or plugged into the heat exchanger in or on the floor module before installation of the heat exchanger.
  • the side plates can be omitted hereby.
  • a particular advantage here is that the possibility of adaptation to different heat exchangers is possible.
  • the molded body elements and the tools for creating are relatively inexpensive.
  • the optimal filling of the dead space between the heat exchanger outer sides and floor module and cover causes a better air duct in the use of individual heat exchangers, with a deterioration of the flow rate can be avoided.
  • the molded body elements also ensure optimal hold of the condenser and evaporator and also ensure optimum flow behavior of the process air.
  • the molded body elements can already be installed at the heat exchanger manufacturer as packaging, security and transport protection.
  • condenser and evaporator can be used as individual parts, which also gives better options for variation, which is the use of the components of the evaporator and condenser or in individual positioning or in combination.
  • the molded body elements consist of foamed block elements, which are each attached to the side portions of the heat exchanger, wherein the individual block member has on its inner side surface recesses or recesses, which for receiving the individual pipe bends of the pipe loop system in the attached state of the block element are provided on the side areas of the heat exchanger, such that the block elements can be plugged into the side areas of the heat exchanger in a self-holding manner. Due to this design it is achieved that, in particular, fault currents no longer flow past the heat exchanger arranged in the flow channel, thereby achieving optimum efficiency.
  • the molded body elements made of foamed block elements can in each case be attached to the side regions of the heat exchanger. They are self-holding plugged into the side areas of the heat exchanger. They thus form a unit with the heat exchanger element.
  • the heat exchanger by means of a respective attached on each side block element forms a heat exchanger unit, which consists of an evaporator and a condenser, which form a structural unit of a heat exchanger by means of the components used.
  • a first block element is arranged on the connection side of the heat exchanger and a second block element is arranged on the flow side of the heat exchanger.
  • the individual block element has in this case on its inner side surface recesses or recesses.
  • the recesses or recesses are provided for receiving the individual pipe bends of the pipe loop system in the attached state of the block element on the side regions of the heat exchanger. Due to this design it is achieved that, in particular, no heat losses occur on the exposed pipe bends because they are wrapped around by the recesses or recesses.
  • the first connection-side block element is provided with openings for pipe ends of the pipe loop system for connection of the refrigerant circuit.
  • the second flow-side arranged block element has on its outer side surface channel-like recesses for receiving screw channels in the flow channel. This ensures that a positive engagement is given in the flow channel.
  • further indentations and / or grooves are provided for insertion of the heat exchanger into the flow channel forming installation space.
  • the molded body elements according to the invention with a positive fit installation in the opening cross-section of the flow channel.
  • the molded body elements consist of an expanded polystyrene material. This also favors that the shaped body elements can be used as packaging material of a heat exchanger unit.
  • the invention therefore also relates in the same way to a packaging material for a heat exchanger of a heat pump unit.
  • the FIG. 1 and 2 shows a heat exchanger 1 for a household appliance, not shown in detail, such as a tumble dryer, a dishwasher or washer-dryer with a heat pump device.
  • the heat exchanger 1 in this case comprises a guided out by slats pipe loop system 2, 3, wherein the heat exchanger 1 is arranged for cooling and / or heating a process air stream in a flow channel 4 with laterally arranged shields, as for example in the FIG. 2 is shown in the installed state of the heat exchanger 1 in the flow channel 4.
  • the shields here consist of molded body elements 5 and 6 as this particular in the FIG. 3 are shown in single view.
  • the molded body elements 5 and 6 in this case substantially fill the free installation space lying laterally in the flow channel 4 or the lateral cavity of the heat exchanger to the flow channel walls 7 and 8.
  • the molded body elements 5 and 6 consist of foamed block elements, which are each attached to the side regions of the heat exchanger 1.
  • the block elements are self-holding plugged into the side regions of the heat exchanger 1.
  • a first block element is arranged on the connection side 11 of the heat exchanger 1 and a second block element is arranged on the flow side 12 of the heat exchanger 1.
  • the individual block element has in this case on its inner side surface recesses or recesses 13, which are provided for receiving the individual pipe bends 14 of the pipe loop system 2, 3 in the attached state of the block element on the side regions of the heat exchanger 1.
  • the first connection-side block element is provided with openings 15 for pipe ends of the pipe loop system 2, 3 for connection of the refrigerant circuit.
  • the second flow-side arranged block element know on its outer side surface channel-like recesses 16 for receiving screw 17 in the flow channel 4. This situation is especially good in the FIG. 1 to recognize where in particular the block element can be seen from its outside.
  • the shaped body elements 5, 6 consist of an expanded polystyrene material.
  • the molded body elements 5, 6 can be used in the inserted state as packaging material of a heat exchanger unit.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Description

Die Erfindung betrifft ein Haushaltsgerät wie beispielsweise einen Wäschetrockner, einen Geschirrspüler oder einen Waschtrockner mit einer Wärmepumpeneinrichtung, dessen Wärmetauscher ein durch Lamellen geführtes Rohrschlaufensystem umfasst und wobei der Wärmetauscher zur Kühlung und/oder zur Erwärmung eines Prozessluftstromes in einem Strömungskanal angeordnet ist und wobei seitlich des Wärmetauschers Abschirmungen angeordnet sind, die aus Formkörperelementen bestehen und die einen im Strömungskanal seitlich liegenden freien Bauraum bzw. seitlichen Hohlraum des Wärmetauschers zu den Strömungskanalwänden im Wesentlichen ausfüllen.The invention relates to a household appliance such as a tumble dryer, a dishwasher or a washer-dryer with a heat pump device whose heat exchanger comprises a loop system guided by lamellae and wherein the heat exchanger for cooling and / or heating a process air stream is arranged in a flow channel and wherein the side of the heat exchanger Shields are arranged, which consist of molded body elements and which substantially fill a laterally lying in the flow channel free space or lateral cavity of the heat exchanger to the flow channel walls.

Ein Wäschetrockner der oben genannten Art ist beispielsweise aus der EP 2 527 528 A1 oder EP 2 549 008 A1 bekannt. Außerdem ist beispielsweise aus dem Stand der Technik gemäß der DE 19 709 176 A1 ein Lamellenwärmetauscher bekannt. Der Lamellentauscher verfügt hierbei über eine Anzahl, in der Regel metallischer Lamellen, die parallel zueinander angeordnet sind. Die Lamellen werden von einem oder mehreren Wärmeübertragungsrohren, hier Kühlmittelrohren, durchsetzt. Durch die Kühlmittelrohre fließt ein Kühlmittel während durch den freien Raum zwischen den Lamellen ein zu kühlendes gasförmiges Medium strömt. Die Wärmeübertragungsrohre tauschen mit den Lamellen Wärme aus, die wiederum Wärme mit dem strömendem Gasmedium austauschen. Auf diese Weise wird mit einem Wärmetauscher, der hier einen Verflüssiger und einen Verdampfer umfasst, der Prozessluftstrom in einem Wärmetrockner einerseits gekühlt und andererseits wieder erwärmt.A tumble dryer of the type mentioned above is for example from the EP 2 527 528 A1 or EP 2 549 008 A1 known. Moreover, for example, from the prior art according to the DE 19 709 176 A1 a fin heat exchanger known. The lamella exchanger here has a number, usually metallic lamellae, which are arranged parallel to each other. The fins are penetrated by one or more heat transfer tubes, here coolant tubes. A coolant flows through the coolant tubes while a gaseous medium to be cooled flows through the free space between the slats. The heat transfer tubes exchange heat with the fins, which in turn exchange heat with the flowing gas medium. In this way, with a heat exchanger, which here comprises a condenser and an evaporator, the process air flow in a heat dryer on the one hand cooled and on the other hand reheated.

Der Wärmetauscher als solches befindet sich hier in dem Prozessluftkanal, durch den die Prozessluft strömt. Um hier einen möglichst optimalen Wirkungsgrad eines Wärmepumpentrockners im Betrieb zu gewährleisten, ist es unter anderem sehr wichtig, dass die Prozessluft in einem möglichst großen Anteil durch die Lamellen des Wärmetauschers geleitet wird. Da der Einbau des Wärmetauschers in dem von Bodenmodul und Deckel gebildeten Strömungskanal nicht formschlüssig ist, sind sogenannte Abschirmelemente erforderlich, die ein Umströmen der Prozessluft im Außenbereich des Wärmetauschers verhindern sollen. So werden gemäß dem Stand der Technik Seitenbleche verwendet, die seitens des Wärmetauscherhersteller bereits integriert werden. Die Seitenbleche reduzieren hier die Anströmfläche unmittelbar auf die Lamellen. In diesem Zusammenhang gestaltet sich die Qualifizierung von anderen Wärmetauscherherstellern als Herausforderung, da sich die Fertigungsverfahren von Wärmetauschern von Hersteller zu Hersteller unterscheiden. Daraus resultiert, dass nicht alle Wärmetauscher mit passenden Abschirmelementen ausgestattet sind. Die Anpassung des Bodenmoduls und des Deckels um Wärmetauscher unterschiedlicher Hersteller optimal integrieren zu können, ist wirtschaftlich nicht sinnvoll, da in diesem Fall eine Umkonstruktion von Bodenmodul und Deckel durchgeführt werden müsste, was hohe Kosten für Neuwerkzeuge oder Änderungen zur Folge hat.The heat exchanger as such is located here in the process air duct, through which the process air flows. To ensure the best possible efficiency of a heat pump dryer during operation, it is very important, among other things, that the process air is passed through the fins of the heat exchanger in the largest possible proportion. Since the installation of the heat exchanger in the flow channel formed by floor module and cover is not form-fitting, so-called shielding elements are required to prevent a flow around the process air in the outer region of the heat exchanger. Thus, according to the prior art side plates are used, which are already integrated by the heat exchanger manufacturer. The side plates here reduce the inflow surface directly on the lamellae. In this context, the qualification of other heat exchanger manufacturers proves to be a challenge, since the manufacturing processes of heat exchangers differ from manufacturer to manufacturer. As a result, not all heat exchangers equipped with suitable shielding elements. The adaptation of the floor module and the cover in order to optimally integrate heat exchangers from different manufacturers, does not make economic sense, since in this case a redesign of floor module and cover would have to be carried out, which has high costs for new tools or changes.

Diese nach dem Stand der Technik bekannten Ausführungsformen haben daher den Nachteil, dass der Wärmetauscheraufbau mit passenden Seitenplatten für Bodenmodul und Deckel nicht für jeden Hersteller umsetzbar ist. Probleme ergeben sich beim Integrieren der Wärmetauscher von anderen Herstellern in dem vorhandenen Bauraum. Auch der getrennte Einbau von Verflüssiger und Verdampfer mit entsprechenden Seitenblechen, lässt sich bei vorhandenen Geräten schwer umsetzen, da sowohl Bodenmodul als auch Deckel umkonstruiert werden müssen. Ein weiterer Nachteil ist, dass man dann nicht ohne weiteres einen Wärmetauscher von anderen Herstellern in dieses Bodenmodul einsetzen kann. Die Wahrscheinlichkeit ist eher gering, dass die Grundgeometrie der Tauscher sowie die der Seitenbleche bei unterschiedlichen Wärmetauscherherstellern gleich sind.Therefore, these known in the prior art embodiments have the disadvantage that the heat exchanger assembly with matching side plates for floor module and cover is not feasible for each manufacturer. Problems arise when integrating the heat exchangers from other manufacturers in the available space. The separate installation of condenser and evaporator with corresponding side plates, can be difficult to implement in existing equipment, as both floor module and lid must be redesigned. Another disadvantage is that you can not easily use a heat exchanger from other manufacturers in this floor module. The probability is rather low that the basic geometry of the exchangers as well as the side plates are the same for different heat exchanger manufacturers.

Durch die JP 2011-167425 A ist ein Wäschetrockner mit einer Wärmepumpeneinrichtung bekannt, dessen Wärmetauscher durch Lamellen geführte Rohrschlaufen umfasst. Der Wärmetauscher ist dabei zur Kühlung und/oder Erwärmung eines Prozessluftstromes in einem Strömungskanal mit seitlich angeordneten Abschirmungen angeordnet.By the JP 2011-167425 A a tumble dryer with a heat pump device is known, the heat exchanger comprising fins guided tube loops. The heat exchanger is arranged for cooling and / or heating a process air stream in a flow channel with laterally arranged shields.

Darüber hinaus ist aus der WO 2013/186129 A1 ein Wäschetrockner bekannt, bei dem die seitlichen Abschirmungen durch Ausrichtungselemente gebildet sind.In addition, from the WO 2013/186129 A1 a tumble dryer is known in which the lateral shields are formed by alignment elements.

Aus der JP 2009034188 A ist außerdem ein Wäschetrockner mit einem Wärmetauscher bekannt, bei dem die stirnseitigen Begrenzungsplatten des Wärmetauschers im Strömungskanal seitlich angeordnete Abschirmungen darstellen.From the JP 2009034188 A In addition, a clothes dryer with a heat exchanger is known, in which the frontal boundary plates of the heat exchanger in the flow channel laterally arranged shields.

Der Erfindung stellt sich somit das Problem, ein Haushaltsgerät wie beispielsweise einen Wäschetrockner mit einem Wärmetauscher derart weiterzubilden, der die geschilderten Nachteile überwindet, wobei insbesondere der Wirkungsgrad des Wärmepumpentrockners möglichst optimal im Betrieb gewährleistet werden soll, wobei die Prozessluft zu einem möglichst großen Anteil durch die Lamellen des Wärmetauschers geleitet wird.The invention thus raises the problem, a household appliance such as a dryer with a heat exchanger in such a way that overcomes the disadvantages, in particular the efficiency of the heat pump dryer should be optimally guaranteed in operation, the process air to the largest possible share by the Slats of the heat exchanger is passed.

Erfindungsgemäß wird dieses Problem mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den nachfolgenden Unteransprüchen.According to the invention, this problem is solved by the features of patent claim 1. Advantageous embodiments and further developments of the invention will become apparent from the following subclaims.

Die mit der Erfindung erreichten Vorteile bestehen darin, dass anstelle von Seitenplatten aus verzinktem Blech Formkörperelemente eingesetzt werden, die aus expandiertem Polystyrol oder Styropor bestehen. Die Formkörperelemente füllen hierbei den freien Bauraum im Strömungskanal entsprechend aus, so dass eine möglichst formschlüssige Positionierung des Wärmetauschers in dem Strömungskanal erreicht wird. Weiter werden die Formkörperelemente vor dem Einbau der Wärmetauscher im bzw. am Bodenmodul an den Wärmetauscher angesetzt bzw. gesteckt. Die Seitenbleche können hierdurch entfallen.The advantages achieved by the invention are that instead of side plates made of galvanized sheet molding body elements are used, which consist of expanded polystyrene or polystyrene. The shaped body elements in this case fill the free space in the flow channel accordingly, so that the most possible positive positioning of the heat exchanger is achieved in the flow channel. Next, the molded body elements are attached or plugged into the heat exchanger in or on the floor module before installation of the heat exchanger. The side plates can be omitted hereby.

Ein besonderer Vorteile ist hierbei, dass die Möglichkeit der Anpassung an unterschiedliche Wärmetauscher möglich ist. Die Formkörperelemente und auch die Werkzeuge zur Erstellung sind vergleichsweise preisgünstig. Die optimale Ausfüllung des toten Bauraums zwischen den Wärmetauscheraußenseiten sowie Bodenmodul und Deckel bewirkt eine bessere Luftleitung bei dem Einsatz einzelner Wärmetauscher, wobei eine Verschlechterung des Volumenstroms vermieden werden kann.A particular advantage here is that the possibility of adaptation to different heat exchangers is possible. The molded body elements and the tools for creating are relatively inexpensive. The optimal filling of the dead space between the heat exchanger outer sides and floor module and cover causes a better air duct in the use of individual heat exchangers, with a deterioration of the flow rate can be avoided.

Die Formkörperelemente gewährleisten zudem einen optimalen Halt von Verflüssiger und Verdampfer und sorgen zudem für ein optimales Strömungsverhalten der Prozessluft. Die Formkörperelemente können bereits beim Wärmetauscherhersteller als Verpackung, Sicherung und zum Transportschutz angebracht werden. Dabei besteht auch die Möglichkeit, dass Verflüssiger und Verdampfer als Einzelteile zum Einsatz kommen können, wobei zudem bessere Variationsmöglichkeiten gegeben sind, was die Verwendung der Bauteile von Verdampfer und Verflüssiger bzw. in Einzelpositionierung oder aber auch im Verbund darstellt.The molded body elements also ensure optimal hold of the condenser and evaporator and also ensure optimum flow behavior of the process air. The molded body elements can already be installed at the heat exchanger manufacturer as packaging, security and transport protection. There is also the possibility that condenser and evaporator can be used as individual parts, which also gives better options for variation, which is the use of the components of the evaporator and condenser or in individual positioning or in combination.

Gemäß der Erfindung wird hierzu merkmalsgemäß vorgeschlagen, dass die Formkörperelemente aus geschäumten Blockelementen bestehen, die jeweils an die Seitenbereiche des Wärmetauschers ansetzbar sind, wobei das einzelne Blockelement an seiner Innenseitenfläche Einformungen bzw. Ausnehmungen aufweist, die zur Aufnahme der einzelnen Rohrbögen des Rohrschlaufensystems im angesetzten Zustand des Blockelementes an den Seitenbereichen des Wärmetauschers vorgesehen sind, derart dass die Blockelemente selbsthaltend an die Seitenbereiche des Wärmetauschers steckbar sind. Aufgrund dieser Ausbildung wird erreicht, dass insbesondere Fehlströme nicht mehr an dem in dem Strömungskanal angeordneten Wärmetauscher vorbeiströmen, so dass dadurch ein optimaler Wirkungsgrad erreicht wird. Die Formkörperelemente aus geschäumten Blockelementen können hierbei jeweils an die Seitenbereiche des Wärmetauschers angesetzt werden. Dabei sind sie selbsthaltend an die Seitenbereiche des Wärmetauschers steckbar. Sie bilden somit eine Einheit mit dem Wärmetauscherelement.According to the invention, it is proposed according to feature, that the molded body elements consist of foamed block elements, which are each attached to the side portions of the heat exchanger, wherein the individual block member has on its inner side surface recesses or recesses, which for receiving the individual pipe bends of the pipe loop system in the attached state of the block element are provided on the side areas of the heat exchanger, such that the block elements can be plugged into the side areas of the heat exchanger in a self-holding manner. Due to this design it is achieved that, in particular, fault currents no longer flow past the heat exchanger arranged in the flow channel, thereby achieving optimum efficiency. The molded body elements made of foamed block elements can in each case be attached to the side regions of the heat exchanger. They are self-holding plugged into the side areas of the heat exchanger. They thus form a unit with the heat exchanger element.

Auch bildet der Wärmetauscher mittels je einem an jeder Seite angesetztem Blockelement eine Wärmetauschereinheit, welche aus einem Verdampfer und einem Verflüssiger besteht, die mittels der verwendeten Bauteile eine Baueinheit eines Wärmetauscher bilden.Also, the heat exchanger by means of a respective attached on each side block element forms a heat exchanger unit, which consists of an evaporator and a condenser, which form a structural unit of a heat exchanger by means of the components used.

Erfindungsgemäß ist ein erstes Blockelement auf der Anschlussseite des Wärmetauschers und ein zweites Blockelement auf der Durchflussseite des Wärmetauschers angeordnet. Das einzelne Blockelement weist hierbei an seiner Innenseitenfläche Einformungen bzw. Ausnehmungen auf. Die Einformungen bzw. Ausnehmungen sind zur Aufnahme der einzelnen Rohrbögen des Rohrschlaufensystems im angesetzten Zustand des Blockelementes an den Seitenbereichen des Wärmetauschers vorgesehen. Aufgrund dieser Ausbildung wird erreicht, dass insbesondere keine Wärmeverluste an den frei liegenden Rohrbögen auftreten, weil diese von den Einformungen bzw. Ausnehmungen umschlungen werden.According to the invention, a first block element is arranged on the connection side of the heat exchanger and a second block element is arranged on the flow side of the heat exchanger. The individual block element has in this case on its inner side surface recesses or recesses. The recesses or recesses are provided for receiving the individual pipe bends of the pipe loop system in the attached state of the block element on the side regions of the heat exchanger. Due to this design it is achieved that, in particular, no heat losses occur on the exposed pipe bends because they are wrapped around by the recesses or recesses.

Das erste anschlussseitige Blockelement ist mit Durchbrüchen für Rohrenden des Rohrschlaufensystems zum Anschluss des Kältemittelkreislaufs versehen. Das zweite durchflussseitig angeordnete Blockelement weist an seiner Außenseitenfläche kanalartige Einformungen zur Aufnahme von Schraubkanälen im Strömungskanal auf. Somit wird erreicht, dass ein formschlüssiger Einsatz im Strömungskanal gegeben ist. An den Außenbereichen der unteren und oberen Seitenkantenbereichen bzw. an den Stirnkantenseitenbereichen der Blockelemente sind weitere Einformungen und / oder Nuten vorgesehen zur Einfügung des Wärmetauschers in den Strömungskanal bildenden Bauraum. Somit ergibt sich für den mit den erfindungsgemäßen Formkörperelementen ein formschlüssiger Einbau in den Öffnungsquerschnitt des Strömungskanals. Wie bereits schon erwähnt, bestehen die Formkörperelemente aus einem expandierten Polystyrol-Material. Dies begünstigt auch, dass die Formkörperelemente als Verpackungsmaterial einer Wärmetauschereinheit verwendbar sind.The first connection-side block element is provided with openings for pipe ends of the pipe loop system for connection of the refrigerant circuit. The second flow-side arranged block element has on its outer side surface channel-like recesses for receiving screw channels in the flow channel. This ensures that a positive engagement is given in the flow channel. At the outer regions of the lower and upper side edge regions or at the front edge side regions of the block elements, further indentations and / or grooves are provided for insertion of the heat exchanger into the flow channel forming installation space. Thus, for the molded body elements according to the invention with a positive fit installation in the opening cross-section of the flow channel. As already mentioned, the molded body elements consist of an expanded polystyrene material. This also favors that the shaped body elements can be used as packaging material of a heat exchanger unit.

Die Erfindung betrifft daher in gleicher Weise auch ein Verpackungsmaterial für einen Wärmetauscher einer Wärmepumpeneinheit.The invention therefore also relates in the same way to a packaging material for a heat exchanger of a heat pump unit.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen rein schematisch dargestellt und wird nachfolgend näher beschrieben. Es zeigt

Figur 1
eine perspektivische Darstellung des Wärmetauschers gemäß der Erfindung mit den angesetzten Formkörperelementen;
Figur 2
eine Draufsicht auf den Wärmetauscher gemäß der Figur 1 in eingebautem Zustand im Strömungskanal und
Figur 3
eine weitere perspektivische Ansicht der beiden seitlich angebrachten Formkörperelemente gemäß der Erfindung.
An embodiment of the invention is shown purely schematically in the drawings and will be described in more detail below. It shows
FIG. 1
a perspective view of the heat exchanger according to the invention with the attached molded body elements;
FIG. 2
a plan view of the heat exchanger according to the FIG. 1 in the installed state in the flow channel and
FIG. 3
a further perspective view of the two side-mounted molded body elements according to the invention.

Die Figur 1 und 2 zeigt einen Wärmetauscher 1 für ein nicht näher dargestelltes Haushaltsgerät wie beispielsweise einen Wäschetrockner, einen Geschirrspüler oder Waschtrockner mit einer Wärmepumpeneinrichtung. Der Wärmetauscher 1 umfasst hierbei ein aus durch Lamellen geführtes Rohrschlaufensystem 2, 3, wobei der Wärmetauscher 1 zur Kühlung und / oder zur Erwärmung eines Prozessluftstromes in einem Strömungskanal 4 mit seitlich angeordneten Abschirmungen angeordnet ist, wie dies beispielsweise in der Figur 2 in eingebautem Zustand des Wärmetauschers 1 im Strömungskanal 4 dargestellt ist. Die Abschirmungen bestehen hierbei aus Formkörperelementen 5 und 6 wie diese insbesondere in der Figur 3 in Einzelansicht dargestellt sind. Die Formkörperelemente 5 und 6 füllen hierbei den im Strömungskanal 4 seitlich liegenden freien Bauraum bzw. den seitlichen Hohlraum des Wärmetauschers zu den Strömungskanalwänden 7 und 8 im Wesentlichen aus. Die Formkörperelemente 5 und 6 bestehen aus geschäumten Blockelementen, die jeweils an die Seitenbereiche des Wärmetauschers 1 angesetzt werden. Dabei sind die Blockelemente selbsthaltend an die Seitenbereiche des Wärmetauschers 1 steckbar.The FIG. 1 and 2 shows a heat exchanger 1 for a household appliance, not shown in detail, such as a tumble dryer, a dishwasher or washer-dryer with a heat pump device. The heat exchanger 1 in this case comprises a guided out by slats pipe loop system 2, 3, wherein the heat exchanger 1 is arranged for cooling and / or heating a process air stream in a flow channel 4 with laterally arranged shields, as for example in the FIG. 2 is shown in the installed state of the heat exchanger 1 in the flow channel 4. The shields here consist of molded body elements 5 and 6 as this particular in the FIG. 3 are shown in single view. The molded body elements 5 and 6 in this case substantially fill the free installation space lying laterally in the flow channel 4 or the lateral cavity of the heat exchanger to the flow channel walls 7 and 8. The molded body elements 5 and 6 consist of foamed block elements, which are each attached to the side regions of the heat exchanger 1. The block elements are self-holding plugged into the side regions of the heat exchanger 1.

Wie insbesondere aus der Figur 1 und 2 zu erkennen ist, sind an jeder Seite die Wärmetauschereinheit bestehend aus Verdampfer 9 und Verflüssiger 10 die Formkörperelemente 5 und 6 zu einer Baueinheit ansteckbar, so dass Verdampfer 9 und Verflüssiger 10 hier eine Baueinheit bilden. Die in dem Strömungskanal 4 erzeugte Prozessluft strömt dabei wie mit der in der Figur 2 eingezeichneten Pfeilrichtung vom Verdampfer 9 zur Abkühlung der Prozessluft über den Verflüssiger 10 zur Wiedererwärmung der Prozessluft.As in particular from the FIG. 1 and 2 can be seen, are on each side of the heat exchanger unit consisting of evaporator 9 and condenser 10, the molded body elements 5 and 6 plugged into a unit, so that evaporator 9 and condenser 10 here form a structural unit. The process air generated in the flow channel 4 flows as with the in the FIG. 2 Plotted arrow direction from the evaporator 9 to cool the process air through the condenser 10 for reheating the process air.

Aus der Figur 1, aber auch aus der Figur 2 ist erkennbar, dass ein erstes Blockelement auf der Anschlussseite 11 des Wärmetauschers 1 und ein zweites Blockelement auf der Durchflussseite 12 des Wärmetauschers 1 angeordnet ist. Das einzelne Blockelement weist hierbei an seiner Innenseitenfläche Einformungen bzw. Ausnehmungen 13 auf, die zur Aufnahme der einzelnen Rohrbögen 14 des Rohrschlaufensystems 2, 3 im angesetzten Zustand des Blockelementes an den Seitenbereichen des Wärmetauschers 1 vorgesehen sind. Wie aus der Figur 3 zu erkennen ist, wo die Formkörperlemente 5 und 6 in der Perspektive dargestellt sind, ist das erste anschlussseitige Blockelement mit Durchbrüchen 15 für Rohrenden des Rohrschlaufensystems 2, 3 zum Anschluss des Kältemittelkreislaufs versehen. Das zweite durchflussseitig angeordnete Blockelement weißt an seiner Außenseitenfläche kanalartige Einformungen 16 zur Aufnahme von Schraubkanälen 17 im Strömungskanal 4 auf. Diese Situation ist insbesondere gut in der Figur 1 zu erkennen, wo insbesondere das Blockelement von seiner Außenseite zu erkennen ist.From the FIG. 1 , but also from the FIG. 2 It can be seen that a first block element is arranged on the connection side 11 of the heat exchanger 1 and a second block element is arranged on the flow side 12 of the heat exchanger 1. The individual block element has in this case on its inner side surface recesses or recesses 13, which are provided for receiving the individual pipe bends 14 of the pipe loop system 2, 3 in the attached state of the block element on the side regions of the heat exchanger 1. Like from the FIG. 3 it can be seen where the Formkörperlemente 5 and 6 are shown in perspective, the first connection-side block element is provided with openings 15 for pipe ends of the pipe loop system 2, 3 for connection of the refrigerant circuit. The second flow-side arranged block element know on its outer side surface channel-like recesses 16 for receiving screw 17 in the flow channel 4. This situation is especially good in the FIG. 1 to recognize where in particular the block element can be seen from its outside.

An den Außenbereichen der unteren und der oberen Seitenkantenbereichen bzw. an den Stirnkantenbereichen der Blockelemente sind weitere Einformungen 18 und/oder Nuten 19 vorgesehen zur Einfügung des Wärmetauschers 1 in den Strömungskanal 4 bildenden Bauraum. Somit ergibt sich ein formschlüssiges Einfügen des aus einer Wärmetauschereinheit 1 bestehenden Baueinheit, die sich passgenau in den Hohlraum des Strömungskanals 4 einsetzen lässt.At the outer regions of the lower and the upper side edge regions or at the front edge regions of the block elements, further indentations 18 and / or grooves 19 are provided for insertion of the heat exchanger 1 into the flow space 4 forming installation space. This results in a positive insertion of the unit consisting of a heat exchanger unit 1, which can be accurately inserted into the cavity of the flow channel 4.

Wie bereits schon erwähnt bestehen die Formkörperelemente 5, 6 aus einem expandierten Polystyrol-Material. Dabei können die Formkörperelemente 5, 6 in eingesetztem Zustand als Verpackungsmaterial einer Wärmetauschereinheit verwendet werden.As already mentioned, the shaped body elements 5, 6 consist of an expanded polystyrene material. In this case, the molded body elements 5, 6 can be used in the inserted state as packaging material of a heat exchanger unit.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Wärmetauscherheat exchangers
22
RohrschlaufensystemPipe loop system
33
RohrschlaufensystemPipe loop system
44
Strömungskanalflow channel
55
FormkörperelementMoldings element
66
FormkörperelementMoldings element
77
StrömungskanalwandFlow channel wall
88th
StrömungskanalwandFlow channel wall
99
VerdampferEvaporator
1010
Verflüssigercondenser
1111
Anschlussseiteterminal side
1212
DurchflusseiteDurchflusseite
1313
Einformungenindentations
1414
Rohrbögenelbows
1515
Durchbrüchebreakthroughs
1616
Einformungenindentations
1717
Schraubkanälescrew channels
1818
Einformungenindentations
1919
Nutengroove

Claims (5)

  1. Domestic appliance, such as a tumble dryer, a dishwasher or a washer-dryer, comprising a heat pump device, the heat exchanger (1) of which comprises a pipe loop system (2, 3) that is guided by fins, and the heat exchanger (1) is arranged in a flow channel (4) for cooling and/or heating a process air stream, and shields being arranged at the sides of the heat exchanger, which shields consist of moulded elements (5) and (6) and substantially fill an open lateral installation space or lateral cavity of the heat exchanger (1) in the flow channel (4) with respect to the flow channel walls (7 and 8), characterised in that the moulded elements (5) and (6) consist of foamed block elements which can each be attached to the side regions of the heat exchanger (1), the individual block element having indentations (13) or recesses on the inner face thereof, which are provided for receiving the individual pipe bends (14) of the pipe loop system (2, 3) when the block element is placed on the side regions of the heat exchanger (1), such that the block elements can be plugged into the side regions of the heat exchanger (1) in a self-locking manner and the heat exchanger (1) can be connected, by means of one block element in each case, to each side to form a modular unit that forms a heat exchanger unit consisting of an evaporator (9) and condenser (10), a first block element being arranged on the connection side (11) of the heat exchanger (1) and a second block element being arranged on the through-flow side (12) of the heat exchanger (1).
  2. Domestic appliance according to claim 1, characterised in that the first block element, arranged on the connection side, is provided with openings (15) for pipe ends of the pipe loop system (2, 3) for connecting the refrigerant circuit.
  3. Domestic appliance according to claims 1 to 2, characterised in that the second block element, arranged on the through-flow side, comprises channel-like indentations (18) in the outer face thereof for receiving screw channels (17) in the flow channel (4).
  4. Domestic appliance according to claims 1 to 3, characterised in that further indentations (18) and/or grooves (19) are provided in the outer regions of the lower and upper side edge regions or in the end edge regions of the block elements for insertion of the heat exchanger (1) into the installation space that forms the flow channel (4).
  5. Domestic appliance according to claims 1 to 4, characterised in that the moulded elements (5) and (6) consist of an expanded polystyrene material.
EP14192758.2A 2013-12-05 2014-11-12 Household appliances such as a laundry dryer, a dishwasher or a washer-dryer having a heat pump unit Active EP2881514B8 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013113506.4A DE102013113506B4 (en) 2013-12-05 2013-12-05 Household appliances such as a clothes dryer, a dishwasher or a washer-dryer with a heat pump unit, and packaging material for a heat exchanger of a heat pump device

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EP2881514A1 EP2881514A1 (en) 2015-06-10
EP2881514B1 true EP2881514B1 (en) 2019-08-07
EP2881514B8 EP2881514B8 (en) 2019-09-11

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US11932985B2 (en) 2020-10-06 2024-03-19 Miele & Cie. Kg Heat exchanger device and floor module for a laundry treatment machine

Also Published As

Publication number Publication date
EP2881514A1 (en) 2015-06-10
DE102013113506A1 (en) 2015-06-11
EP2881514B8 (en) 2019-09-11
DE102013113506B4 (en) 2018-12-20

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