EP2350376B1 - Domestic appliance for the care of laundry items having a heating device and method for heating suds and/or laundry items in a drum of a domestic appliance - Google Patents

Domestic appliance for the care of laundry items having a heating device and method for heating suds and/or laundry items in a drum of a domestic appliance Download PDF

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Publication number
EP2350376B1
EP2350376B1 EP09736235.4A EP09736235A EP2350376B1 EP 2350376 B1 EP2350376 B1 EP 2350376B1 EP 09736235 A EP09736235 A EP 09736235A EP 2350376 B1 EP2350376 B1 EP 2350376B1
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EP
European Patent Office
Prior art keywords
heating device
drum
domestic appliance
induction heating
induction
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Not-in-force
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EP09736235.4A
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German (de)
French (fr)
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EP2350376A1 (en
Inventor
Andreas Hanau
Hans Eglmeier
Andreas Stolze
Bert Peters
Robby Reinholz
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BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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Priority to PL09736235T priority Critical patent/PL2350376T3/en
Publication of EP2350376A1 publication Critical patent/EP2350376A1/en
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Publication of EP2350376B1 publication Critical patent/EP2350376B1/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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/04—Heating arrangements

Definitions

  • the invention relates to a domestic appliance for the care of laundry items, comprising a drum for receiving the items of laundry and a heating device for heating the items of laundry and / or the wash liquor. Furthermore, the invention relates to a method for heating a wash liquor and / or laundry items in a drum of a household appliance for the care of laundry.
  • heating devices which are designed as a snake heater or as a heating element and thus enable a resistive heating.
  • Such heaters are usually introduced into the medium to be heated.
  • an increased amount to be heated medium must be provided by the household appliance, so that the heater can be brought into contact with the medium. It is disadvantageous that an additional energy requirement is required for the heating of the additionally introduced medium.
  • EP 1 914 339 A1 For example, a household washing machine with a drum for receiving laundry and an induction heater for heating the wash liquor is known. Another laundry washing machine with an induction heater is in JP 2005 177 331 A disclosed.
  • An inventive domestic appliance for the care of laundry comprises a drum for receiving the laundry items and a heating device for heating the laundry items and / or for heating the wash liquor.
  • the heater is designed as an induction heater. This specific embodiment of the heating device allows more appropriate heating, thereby also enabling energy-efficient heating and, in general, situation-adapted heating. The entire heating process of the wash liquor and / or the laundry items can be improved.
  • the drum is part of the induction heater.
  • a component of the domestic appliance can be used in a multifunctional manner in a particularly suitable manner.
  • the drum is designed to hold the laundry items and, moreover, is also part of the heating device, thus a particularly effective heating process can be made possible.
  • the coupling of the drum with other components of the induction heating device also allows a particularly effective heating of the laundry items and / or the wash liquor.
  • the drum is designed as a receiver of signals of at least one induction coil of the induction device.
  • this can also be a component reduction and component savings are guaranteed, especially with regard to the required components for the heater.
  • the drum is made of ferromagnetic material, in particular ferromagnetic stainless steel.
  • this is provided for portions of the drum, which are particularly suitable depending on the situation to be part of the induction heating.
  • this material allows a particularly high efficiency in terms of induction heating.
  • the heating is performed by an inductively operating heater.
  • the inductively operating heater is operated in phase synchronization with the rotation of the drum.
  • the switch-on frequency and the operating time of the heating device a partial area or several partial areas of the drum is included in the inductively operating heating device. As a result, targeted heating of only these included subregions is possible.
  • At least one additional element is arranged as a further surface for the induction heating device on the drum in addition to the drum outer surface.
  • the surface of the drum available for the induction heating device can thus be increased again, whereby the heating effect can be further increased.
  • the location-specific attachment of the elements with regard to suitable functional improvements can thereby also a targeted local and / or temporal configuration of a heating process with regard to the positioning of the induction heating device can be achieved.
  • subregions of the drum are arranged locally depending on assigned specific functions of the induction heating device.
  • the local arrangement of at least one additional element on the drum is formed as a function of assigned specific functions of the induction heating device, this element being part of the induction heating device.
  • a division of the heating device into different zones may be mentioned by way of example, as a result of which, in particular, a variation of the electric heating power can be implemented particularly suitably in terms of location and time.
  • this local configuration of sub-areas of the drum and / or additional elements with regard to a function of adapting to the water level in the drum and / or the tub can be carried out, whereby an on-demand connection of higher-lying heating zones can be ensured and Thus, depending on demand specific heating zones are activated.
  • the heating process can be adapted to the specific situation, thereby also enabling particularly energy-efficient heating.
  • an embodiment of different receivers of the induction heating device by different material design and / or structuring of these subregions and / or elements for different applications, such as a steam generator, be generated.
  • a cleaning function can be realized, for example, by allowing a specified local very strong heating.
  • the local positioning of elements and / or portions of the drum is particularly suitable because even here, the cleaning process can only be particularly effective if the associated precise local arrangement of the induction heating is formed.
  • a Coating the drum and / or a tub of the household appliance with a catalytic material may be provided.
  • a division to different heating zones in the circumference of the drum may be formed at a phase synchronism with the drum movement.
  • components of the induction heating device in the region of drivers, which are arranged in the drum and are designed to take along the laundry items with rotating drum, and / or in a driver itself, are arranged. In connection with the phase synchronicity in the drum movement can thus be carried out a targeted heating of the drum shell at locally specific positions and to locally specific rotation angles of the drum.
  • the heating zones and thus also components of the induction heating device also form in the region of the bottom disk and / or an end plate of the drum.
  • elements of the induction heating device in particular at least one induction coil, surrounds a tub in a clamp-like or U-shaped manner.
  • the induction coil itself may be designed like a clip or a plurality of induction coils may be arranged in a U-shape around the tub.
  • the clamp-like design of the induction coil can be aligned in all directions around the tub.
  • a bottom disk of the drum can be heated by an induction coil disk.
  • the induction coil disc is formed with a diameter which is greater than or equal to half the diameter of the tub, in particular corresponds substantially to the diameter of the tub.
  • Particularly advantageous is a substantially concentric with the drum rotation axis arrangement in the region of the bottom of the tub.
  • the induction helm device is designed to generate and / or to obtain defined desired and thus specific spatial and / or temporal temperature gradients in the wash liquor and / or in the laundry items.
  • the induction helm device is designed to generate and / or to obtain defined desired and thus specific spatial and / or temporal temperature gradients in the wash liquor and / or in the laundry items.
  • a heat distribution via convection currents in the wash liquor or an exploitation of the thermal expansion behavior of the components for targeted flaking of incrustations can be made possible.
  • the induction heating device is at least partially formed during a heating process for heating the drum only in the area outside of a standing in contact with the wash liquor area.
  • this is provided with rotating drum, so that in a dynamic manner, only the areas of the drum are heated by the induction heater, which are outside of the area in contact with the wash liquor.
  • the rotating drum can thus be used as a heat driver. This means that a heating of the drum takes place outside of the liquor, whereby, when the drum is rotating and the heat stored in the drum material is exceeded, the drum piece that is just submerged in the wash liquor and thus the drum area in direct contact with the wash liquor will introduce heat into the wash liquor and / or can achieve the laundry, which is then also dependent on the drum speed in a particularly advantageous manner adjustable.
  • the single figure shows a schematic front view of a trained as a washing machine domestic appliance 1, which has a drum 2 and a tub 3, which surrounds the drum 2.
  • the drum 2 is. formed for receiving laundry items, which also results in operation, a wash liquor 4 with a specific level 5 results on the inside 6 of the drum 2 four drivers 7, 8, 9 and 10 are exemplified, which for taking along the laundry items in rotating Drum 2 are formed.
  • the drum 2 is formed of a ferromagnetic material, in particular of a ferromagnetic stainless steel, at least partially.
  • the drum 2 is part of an induction heating device 11, which is designed for heating the wash liquor 4 and / or located in the drum 2 laundry items.
  • the outer lateral surface 12 of the drum 2 comprises a corresponding functionality.
  • the drum 2, in particular the lateral surface 12, is designed as a receiver of the induction heater 11 and thus can receive signals from induction coils, not shown, of the induction heater 11, so that a heating process can be realized.
  • At least one further element can be provided on the drum 2, in particular on the lateral surface 12, which is assigned to the induction heating device 11 and in particular serves to increase the surface area of the surface available for the induction heating device 11.
  • Such an element can also be a circuit, for example an induction coil.
  • Such circuits can preferably also be applied to the drum 2 by means of printing processes, ie the circuits are so-called printed circuits. It is particularly favorable that when using a further element, which is designed to realize the induction heating device 11, the drum 2 does not have to be formed from a ferromagnetic material.
  • the additional element and / or the lateral surface 12 is formed at specific subregions for realizing the induction heating device 11.
  • This local attachment of the additional elements and / or the configuration of the subregions of the lateral surface 12 can be functionally specific.
  • the drum 2 and / or the tub 3 are at least partially coated with a catalytic material.
  • the induction heating device 11 is formed at least in the region of a bottom disk and / or a front bottom of the drum 2, which are not shown in greater detail.
  • the induction coils of the induction heater 11 are positioned outside and adjacent to the drum 2.
  • At least one induction coil of the induction heating device 11 is designed such that it encompasses the tub 3 in a clamp-like manner. It is particularly preferred if the induction heating device 11 comprises an induction coil disc which has a diameter corresponding to the diameter d1 of the tub 3.
  • the induction heating device 11 is designed in particular for generating and / or maintaining defined and thus desired specific spatial and / or temporal temperature gradients in the wash liquor 4 and / or the laundry items.
  • the induction heating device 11 is designed for heating the drum 2 only in a region 13 outside a region 14 in contact with the wash liquor 4. This is controlled or regulated by a control unit, which is not shown, and this is particularly advantageous in particular with rotating drum 2, since always outside of the wash liquor 4 located part of the drum 2 is heated and then immersed in the wash liquor. 4 a heat transfer from this part of the drum 2 takes place in the wash liquor 4 and / or the laundry items.
  • the drum 2 can be a perpendicular to the Figure plane oriented axis A are rotated both clockwise and counterclockwise.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • General Induction Heating (AREA)

Description

Die Erfindung betrifft ein Hausgerät zur Pflege von Wäschestücken, mit einer Trommel zur Aufnahme der Wäschestücke und einer Heizvorrichtung zum Heizen der Wäschestücke und/oder der Waschlauge. Des Weiteren betrifft die Erfindung ein Verfahren zum Heizen einer Waschlauge und/oder von Wäschestücken in einer Trommel eines Hausgeräts zur Pflege von Wäschestücken.The invention relates to a domestic appliance for the care of laundry items, comprising a drum for receiving the items of laundry and a heating device for heating the items of laundry and / or the wash liquor. Furthermore, the invention relates to a method for heating a wash liquor and / or laundry items in a drum of a household appliance for the care of laundry.

Bei bekannten Hausgeräten zur Pflege von Wäschestücken, wie beispielsweise einer Waschmaschine oder einem Waschtrockner, sind Heizvorrichtungen bekannt, die als Schlangenheizkörper oder als Heizstab ausgebildet sind und somit eine resistive Heizung ermöglichen. Solche Heizvorrichtungen werden meist In das zu erwärmende Medium eingebracht. Dazu muss eine erhöhte Menge zu erwärmendes Medium vom Hausgerät bereitgestellt werden, damit die Heizvorrichtung mit dem Medium in Kontakt gebracht werden kann. Dabei ist es von Nachteil, dass für die Erwärmung des zusätzlich eingebrachten Mediums ein zusätzlicher Energiebedarf erforderlich wird.In known household appliances for the care of laundry items, such as a washing machine or a washer-dryer, heating devices are known, which are designed as a snake heater or as a heating element and thus enable a resistive heating. Such heaters are usually introduced into the medium to be heated. For this purpose, an increased amount to be heated medium must be provided by the household appliance, so that the heater can be brought into contact with the medium. It is disadvantageous that an additional energy requirement is required for the heating of the additionally introduced medium.

Aus EP 1 914 339 A1 ist eine Haushaltswaschmaschine mit einer Trommel zum Aufnehmen von Wäschestücke und einer Induktionsheizvorrichtung zum Heizen der Waschlauge bekannt. Eine weitere Wäschewaschmaschine mit einer Induktionsheizeinrichtung ist in JP 2005 177 331 A offenbart.Out EP 1 914 339 A1 For example, a household washing machine with a drum for receiving laundry and an induction heater for heating the wash liquor is known. Another laundry washing machine with an induction heater is in JP 2005 177 331 A disclosed.

Es ist Aufgabe der vorliegenden Erfindung, ein Hausgerät zur Pflege von Wäschestücken und ein Verfahren zum Heizen einer Waschlauge und/oder von Wäschestücken zu schaffen, mit dem beziehungsweise bei dem der Heizvorgang effektiver im Hinblick auf Energiebedarf unter Berücksichtigung der einzubringenden Waschlauge, effektiver im Hinblick auf den Energieeintrag in die Wäschestücke und ein situationsspezifisches Heizen ermöglicht wird.It is an object of the present invention to provide a domestic appliance for the care of laundry items and a method for heating a wash liquor and / or laundry, with the or in which the heating process more effective in terms of energy requirements, taking into account the washing liquor, more effective in terms of the energy input into the laundry and a situation-specific heating is enabled.

Diese Aufgabe wird durch ein Hausgerät, welches die Merkmale nach Anspruch 1 aufweist, und ein Verfahren, welches die Merkmale nach Anspruch 13 aufweist, gelöst.This object is achieved by a domestic appliance having the features of claim 1, and a method having the features of claim 13.

Ein erfindungsgemäßes Hausgerät zur Pflege von Wäschestücken umfasst eine Trommel zur Aufnahme der Wäschestücke und eine Heizvorrichtung zum Heizen der Wäschestücke und/oder zum Heizen der Waschlauge. Die Heizvorrichtung ist als Induktionsheizvorrichtung ausgebildet. Durch diese spezifische Ausgestaltung der Heizvorrichtung kann ein bedarfsgerechteres Heizen ermöglicht werden, wodurch dadurch auch ein energieeffizienteres Heizen und generell ein situationsangepassteres Heizen ermöglicht werden kann. Der gesamte Heizvorgang der Waschlauge und/oder den Wäschestücken kann dadurch verbessert werden.An inventive domestic appliance for the care of laundry comprises a drum for receiving the laundry items and a heating device for heating the laundry items and / or for heating the wash liquor. The heater is designed as an induction heater. This specific embodiment of the heating device allows more appropriate heating, thereby also enabling energy-efficient heating and, in general, situation-adapted heating. The entire heating process of the wash liquor and / or the laundry items can be improved.

Dabei ist vorgesehen, dass die Trommel ein Teil der Induktionsheizvorrichtung ist. Dadurch kann in besonders geeigneter Weise eine Komponente des Hausgeräts mulifunktionell verwendet werden. Indem nämlich die Trommel zur Aufnahme der Wäschestücke ausgebildet ist und darüber hinaus auch Bestandteil der Heizvorrichtung ist, kann somit ein besonders effektiver Heizvorgang ermöglicht werden. Die Kopplung der Trommel mit anderen Komponenten der Induktionsheizvorrichtung ermöglicht darüber hinaus ein besonders effektives Erwärmen der Wäschestücke und/oder der Waschlauge.It is provided that the drum is part of the induction heater. As a result, a component of the domestic appliance can be used in a multifunctional manner in a particularly suitable manner. By namely, the drum is designed to hold the laundry items and, moreover, is also part of the heating device, thus a particularly effective heating process can be made possible. The coupling of the drum with other components of the induction heating device also allows a particularly effective heating of the laundry items and / or the wash liquor.

Ferner ist die Trommel als Empfänger von Signalen zumindest einer Induktionsspule der Induktionsvorrichtung ausgebildet.Furthermore, the drum is designed as a receiver of signals of at least one induction coil of the induction device.

Nicht zuletzt kann dadurch auch eine Komponentenreduzierung und eine Bauteileinsparung gewährleistet werden, insbesondere im Hinblick auf die erforderlichen Komponenten für die Heizvorrichtung.Not least, this can also be a component reduction and component savings are guaranteed, especially with regard to the required components for the heater.

Vorzugsweise ist die Trommel aus ferromagnetischem Material, insbesondere ferromagnetischem Edelstahl, ausgebildet. Insbesondere ist dies für Teilbereiche der Trommel vorgesehen, welche sich situationsabhängig besonders eignen, um auch Bestandteil der Induktionsheizvorrichtung zu sein. Gerade dieses Material ermöglicht einen besonders hohen Wirkungsgrad im Hinblick auf die Induktionsheizung.Preferably, the drum is made of ferromagnetic material, in particular ferromagnetic stainless steel. In particular, this is provided for portions of the drum, which are particularly suitable depending on the situation to be part of the induction heating. Especially this material allows a particularly high efficiency in terms of induction heating.

Bei dem erfindungsgemäßen Verfahren zum Heizen einer Waschlauge und/oder von Wäschestücken in einer Trommel eines Hausgeräts zur Pflege von Wäschestücken wird das Heizen durch eine induktiv arbeitende Heizvorrichtung durchgeführt.In the method according to the invention for heating a wash liquor and / or laundry items in a drum of a domestic appliance for the care of laundry items, the heating is performed by an inductively operating heater.

Die induktiv arbeitende Heizvorrichtung wird phasensynchron zur Drehung der Trommel betrieben. Abhängig von der Phasenlage, der Einschaltfrequenz und der Betriebsdauer der Heizvorrichtung wird ein Teilbereich oder werden mehrere Teilbereiche der Trommel in die induktiv arbeitende Heizvorrichtung einbezogen. Hierdurch ist ein gezieltes Erwärmen nur dieser einbezogenen Teilbereiche möglich.The inductively operating heater is operated in phase synchronization with the rotation of the drum. Depending on the phase position, the switch-on frequency and the operating time of the heating device, a partial area or several partial areas of the drum is included in the inductively operating heating device. As a result, targeted heating of only these included subregions is possible.

Vorteilhafte Ausgestaltungen des erfindungsgemäßen Hausgeräts sind als vorteilhafte Ausgestaltungen des erfindungsgemäßen Verfahrens anzusehen.Advantageous embodiments of the domestic appliance according to the invention are to be regarded as advantageous embodiments of the method according to the invention.

Vorzugsweise ist an der Trommel zusätzlich zur Trommelaußenfläche zumindest ein zusätzliches Element als weitere Oberfläche für die Induktionsheizvorrichtung angeordnet. Bedarfsabhängig kann somit die für die Induktionsheizvorrichtung zur Verfügung stehende Oberfläche der Trommel nochmals vergrößert werden, wodurch die Heizwirkung nochmals erhöht werden kann. Durch die örtlich spezifische Anbringung der Elemente im Hinblick auf geeignete Funktionsverbesserungen kann dadurch auch eine gezielte örtliche und/oder zeitliche Ausgestaltung eines Heizvorgangs im Hinblick auf die Positionierung der Induktionsheizvorrichtung erreicht werden.Preferably, at least one additional element is arranged as a further surface for the induction heating device on the drum in addition to the drum outer surface. Depending on demand, the surface of the drum available for the induction heating device can thus be increased again, whereby the heating effect can be further increased. The location-specific attachment of the elements with regard to suitable functional improvements can thereby also a targeted local and / or temporal configuration of a heating process with regard to the positioning of the induction heating device can be achieved.

Vorzugsweise ist vorgesehen, dass Teilbereiche der Trommel örtlich abhängig von zugeordneten spezifischen Funktionen der Induktionsheizvorrichtung angeordnet sind. Insbesondere kann auch vorgesehen sein, dass die örtliche Anordnung von zumindest einem zusätzlichen Element an der Trommel abhängig von zugeordneten spezifischen Funktionen der Induktionsheizvorrichtung ausgebildet ist, wobei dieses Element Bestandteil der Induktionsheizvorrichtung ist.It is preferably provided that subregions of the drum are arranged locally depending on assigned specific functions of the induction heating device. In particular, it may also be provided that the local arrangement of at least one additional element on the drum is formed as a function of assigned specific functions of the induction heating device, this element being part of the induction heating device.

Im Hinblick auf die zusätzlichen Funktionen sei beispielhaft eine Aufteilung der Heizvorrichtung in verschiedene Zonen genannt, wodurch sich insbesondere eine Variation der elektrischen Heizleistung örtlich und zeitlich besonders geeignet realisieren lässt. Darüber hinaus kann durch diese örtliche Ausgestaltung von Teilbereichen der Trommel und/oder von zusätzlichen Elementen im Hinblick auf eine Funktion an das Anpassen an den Wasserstand in der Trommel und/oder dem Laugenbehälter erfolgen, wodurch eine bedarfsgerechte Zuschaltung von höher liegenden Heizzonen gewährleistet werden kann und somit bedarfsabhängig spezifische Heizzonen aktiviert sind. Dadurch kann zum einen der Heizvorgang situationsspezifisch besonders angepasst werden und dadurch auch ein besonders energieeffizientes Heizen ermöglicht werden.With regard to the additional functions, a division of the heating device into different zones may be mentioned by way of example, as a result of which, in particular, a variation of the electric heating power can be implemented particularly suitably in terms of location and time. In addition, this local configuration of sub-areas of the drum and / or additional elements with regard to a function of adapting to the water level in the drum and / or the tub can be carried out, whereby an on-demand connection of higher-lying heating zones can be ensured and Thus, depending on demand specific heating zones are activated. As a result, on the one hand, the heating process can be adapted to the specific situation, thereby also enabling particularly energy-efficient heating.

Darüber hinaus kann im Hinblick auf die Funktionalität der örtlichen Anordnung der Teilbereiche der Trommel und/oder der zusätzlichen Elemente eine Ausgestaltung von unterschiedlichen Empfängern der Induktionsheizvorrichtung durch verschiedene Materialausgestaltung und/oder Strukturgebung dieser Teilbereiche und/oder Elemente für verschiedene Anwendungen, wie beispielsweise einen Dampfgenerator, erzeugt werden.In addition, with regard to the functionality of the local arrangement of the subregions of the drum and / or the additional elements, an embodiment of different receivers of the induction heating device by different material design and / or structuring of these subregions and / or elements for different applications, such as a steam generator, be generated.

Darüber hinaus kann eine Reinigungsfunktion realisiert werden, indem beispielsweise ein spezifiziert lokales sehr starkes Aufheizen ermöglicht wird. Auch dadurch ist die örtliche Positionierung von Elementen und/oder von Teilbereichen der Trommel besonders geeignet, da auch hier der Reinigungsvorgang nur dann besonders effektiv erfolgen kann, wenn auch die zugehörige genaue örtliche Anordnung der Induktionsheizvorrichtung ausgebildet ist. In diesem Zusammenhang kann beispielsweise auch zusätzlich eine Beschichtung der Trommel und/oder eines Laugenbehälters des Hausgeräts mit einem katalytischen Material vorgesehen sein.In addition, a cleaning function can be realized, for example, by allowing a specified local very strong heating. Also, the local positioning of elements and / or portions of the drum is particularly suitable because even here, the cleaning process can only be particularly effective if the associated precise local arrangement of the induction heating is formed. In this context, for example, in addition to a Coating the drum and / or a tub of the household appliance with a catalytic material may be provided.

Als weitere vorteilhafte funktionsspezifische Anbringung des Elements und/oder der örtlichen Ausbildung von Teilbereichen der Trommel im Hinblick auf die Realisierung einer Induktionsheizvorrichtung kann eine Aufteilung auf verschiedene Heizzonen im Umfang der Trommel bei einer Phasensynchronizität mit der Trommelbewegung ausgebildet sein. Insbesondere ist vorgesehen, dass Komponenten der Induktionsheizvorrichtung im Bereich von Mitnehmern, die in der Trommel angeordnet sind und zum Mitnehmen der Wäschestücke bei sich drehender Trommel ausgebildet sind, und/oder in einem Mitnehmer selbst, angeordnet sind. Im Zusammenhang mit der Phasensynchronizität bei der Trommelbewegung kann somit ein gezieltes Heizen des Trommelmantels an örtlich spezifischen Positionen und zu örtlich spezifischen Drehwinkeln der Trommel erfolgen.As a further advantageous function-specific attachment of the element and / or the local formation of portions of the drum with regard to the realization of an induction heating, a division to different heating zones in the circumference of the drum may be formed at a phase synchronism with the drum movement. In particular, it is provided that components of the induction heating device in the region of drivers, which are arranged in the drum and are designed to take along the laundry items with rotating drum, and / or in a driver itself, are arranged. In connection with the phase synchronicity in the drum movement can thus be carried out a targeted heating of the drum shell at locally specific positions and to locally specific rotation angles of the drum.

Vorzugsweise ist vorgesehen, dass sich die Heizzonen und somit auch Komponenten der Induktionsheizvorrichtung auch im Bereich der Bodenscheibe und/oder eines Stirnbodens der Trommel ausbilden.It is preferably provided that the heating zones and thus also components of the induction heating device also form in the region of the bottom disk and / or an end plate of the drum.

Es kann vorzugsweise vorgesehen sein, dass Elemente der Induktionsheizvorrichtung, insbesondere zumindest eine Induktionsspule, einen Laugenbehälter klammerartig bzw. U-förmig umgreift. Dabei kann die Induktionsspule selbst klammerartig ausgebildet sein oder mehrere Induktionsspulen U-förmig um den Laugenbehälter herum angeordnet sein. Die klammerartige Ausbildung der Induktionsspule kann in allen Richtungen um den Laugenbehälter ausgerichtet sein.It can preferably be provided that elements of the induction heating device, in particular at least one induction coil, surrounds a tub in a clamp-like or U-shaped manner. In this case, the induction coil itself may be designed like a clip or a plurality of induction coils may be arranged in a U-shape around the tub. The clamp-like design of the induction coil can be aligned in all directions around the tub.

Insbesondere ist vorgesehen, dass eine Bodenscheibe der Trommel durch eine Induktionsspulenscheibe beheizbar ist. Insbesondere ist die Induktionsspulenscheibe mit einem Durchmesser ausgebildet, welcher größer gleich dem halben Durchmesser des Laugenbehälters ist, insbesondere im Wesentlichen dem Durchmesser des Laugenbehälters entspricht. Besonders vorteilhaft ist eine im Wesentlichen zur Trommeldrehachse konzentrische Anordnung im Bereich des Bodens des Laugenbehälters.In particular, it is provided that a bottom disk of the drum can be heated by an induction coil disk. In particular, the induction coil disc is formed with a diameter which is greater than or equal to half the diameter of the tub, in particular corresponds substantially to the diameter of the tub. Particularly advantageous is a substantially concentric with the drum rotation axis arrangement in the region of the bottom of the tub.

Besonders vorteilhaft erweist es sich, wenn die Induktionshelzvorrichtung zum Erzeugen und/oder zum Erhalten von definierten gewünschten und somit spezifischen räumlichen und/oder zeitlichen Temperaturgradienten in der Waschlauge und/oder in den Wäschestücken ausgebildet ist. Es kann somit ein Aufbauen und Erhalten von räumlichen und zeitlichen Temperaturgradienten zur Beeinflussung von Heizeigenschaften erzielt werden. Insbesondere kann beispielsweise eine Wärmeverteilung über Konvektionsströmungen in der Waschlauge oder einem Ausnutzen des Wärmedehnungsverhaltens der Bauteile zum gezielten Abplatzen von Inkrustationen ermöglicht werden.It proves to be particularly advantageous if the induction helm device is designed to generate and / or to obtain defined desired and thus specific spatial and / or temporal temperature gradients in the wash liquor and / or in the laundry items. Thus, it is possible to achieve a buildup and maintenance of spatial and temporal temperature gradients for influencing heating properties. In particular, for example, a heat distribution via convection currents in the wash liquor or an exploitation of the thermal expansion behavior of the components for targeted flaking of incrustations can be made possible.

Bevorzugt ist vorgesehen, dass die Induktionsheizvorrichtung zumindest teilweise während eines Heizvorgangs zum Heizen der Trommel nur im Bereich außerhalb eines mit der Waschlauge In Kontakt stehenden Bereichs ausgebildet ist. Insbesondere ist dies bei sich drehender Trommel vorgesehen, so dass in dynamischer Weise nur immer die Bereiche der Trommel durch die Induktionsheizvorrichtung geheizt sind, welche sich außerhalb des mit der Waschlauge in Kontakt stehenden Bereichs befinden. Die sich drehende Trommel kann somit als Wärmemitnehmer benutzt werden. Dies bedeutet, dass eine Beheizung der Trommel außerhalb der Lauge erfolgt, wobei sich bei drehender Trommel und Abgeben der im Trommelmaterial gespeicherten Wärme Ober das gerade in die Waschlauge tauchende Trommelstück und somit der sich mit der Waschlauge im direkten Kontakt befindende Trommelbereich ein Wärmeeintrag in die Waschlauge und/oder die Wäschestücke erzielen lässt, wobei dies dann auch abhängig von dar Trommeldrehzahl in besonders vorteilhafter Weise regulierbar ist.It is preferably provided that the induction heating device is at least partially formed during a heating process for heating the drum only in the area outside of a standing in contact with the wash liquor area. In particular, this is provided with rotating drum, so that in a dynamic manner, only the areas of the drum are heated by the induction heater, which are outside of the area in contact with the wash liquor. The rotating drum can thus be used as a heat driver. This means that a heating of the drum takes place outside of the liquor, whereby, when the drum is rotating and the heat stored in the drum material is exceeded, the drum piece that is just submerged in the wash liquor and thus the drum area in direct contact with the wash liquor will introduce heat into the wash liquor and / or can achieve the laundry, which is then also dependent on the drum speed in a particularly advantageous manner adjustable.

Ein Ausführungsbeispiel wird nachfolgend anhand einer schematischen Zeichnung näher erläutert. Die einzige Figur zeigt In schematischer Frontansicht ein als Waschmaschine ausgebildetes Hausgerät 1, welches eine Trommel 2 und einen Laugenbehälter 3 aufweist, welcher die Trommel 2 umgibt. Die Trommel 2 ist. zur Aufnahme von Wäschestücke ausgebildet, wobei sich darüber hinaus auch im Betrieb eine Waschlauge 4 mit einem spezifischen Füllstand 5 ergibt An der Innenseite 6 der Trommel 2 sind beispielhaft vier Mitnehmer 7, 8, 9 und 10 ausgebildet, welche zur Mitnahme der Wäschestücke bei sich drehender Trommel 2 ausgebildet sind.An embodiment will be explained in more detail with reference to a schematic drawing. The single figure shows a schematic front view of a trained as a washing machine domestic appliance 1, which has a drum 2 and a tub 3, which surrounds the drum 2. The drum 2 is. formed for receiving laundry items, which also results in operation, a wash liquor 4 with a specific level 5 results on the inside 6 of the drum 2 four drivers 7, 8, 9 and 10 are exemplified, which for taking along the laundry items in rotating Drum 2 are formed.

Die Trommel 2 ist aus einem ferromagnetischem Material, insbesondere aus einem ferromagnetischem Edelstahl, zumindest bereichsweise ausgebildet. Die Trommel 2 ist Bestandteil einer Induktionsheizvorrichtung 11, welche zum Heizen der Waschlauge 4 und/oder von In der Trommel 2 befindlichen Wäschestücken ausgebildet ist. Insbesondere ist dabei vorgesehen, dass die außenseitige Mantelfläche 12 der Trommel 2 eine entsprechende Funktionalität umfasst. Dazu ist vorgesehen, dass die Trommel 2, insbesondere die Mantelfläche 12, als Empfänger der Induktionsheizvorrichtung 11 ausgebildet ist und somit Signale von nicht dargestellten Induktionsspulen der Induktionsheizvorrichtung 11 aufnehmen kann, so dass ein Heizvorgang realisierbar ist.The drum 2 is formed of a ferromagnetic material, in particular of a ferromagnetic stainless steel, at least partially. The drum 2 is part of an induction heating device 11, which is designed for heating the wash liquor 4 and / or located in the drum 2 laundry items. In particular, it is provided that the outer lateral surface 12 of the drum 2 comprises a corresponding functionality. For this purpose, it is provided that the drum 2, in particular the lateral surface 12, is designed as a receiver of the induction heater 11 and thus can receive signals from induction coils, not shown, of the induction heater 11, so that a heating process can be realized.

Darüber hinaus kann an der Trommel 2, insbesondere an der Mantelfläche 12, zumindest ein weiteres Element vorgesehen sein, welches der Induktionsheizvorrichtung 11 zugeordnet ist und insbesondere zur Oberflächenvergrößerung der für die Induktionsheizvorrichtung 11 zur Verfügung stehenden Fläche dient. Ein solches Element kann auch ein Schaltkreis, beispielsweise eine Induktionsspule, sein. Solche Schaltkreise können bevorzugt auch mittels Druckverfahren auf die Trommel 2 aufgebracht werden, d.h. die Schaltkreise sind sogenannte gedruckte Schaltkreise. Besonders günstig ist es, dass bei der Verwendung eines weiteren Elements, welches zur Realisierung der Induktionsheizvorrichtung 11 ausgebildet ist, die Trommel 2 nicht aus einem ferromagnetischem Material ausgebildet sein muss.In addition, at least one further element can be provided on the drum 2, in particular on the lateral surface 12, which is assigned to the induction heating device 11 and in particular serves to increase the surface area of the surface available for the induction heating device 11. Such an element can also be a circuit, for example an induction coil. Such circuits can preferably also be applied to the drum 2 by means of printing processes, ie the circuits are so-called printed circuits. It is particularly favorable that when using a further element, which is designed to realize the induction heating device 11, the drum 2 does not have to be formed from a ferromagnetic material.

Besonders bevorzugt erweist es sich, wenn das zusätzliche Element und/oder die Mantelfläche 12 an spezifischen Teilbereichen zur Realisierung der Induktionsheizvorrichtung 11 ausgebildet ist. Diese örtliche Anbringung der zusätzlichen Elemente und/oder der Ausgestaltung der Teilbereiche der Mantelfläche 12 kann funktionsspezifisch erfolgen. In diesem Zusammenhang sei auf die verschiedenen Möglichkeiten der örtlichen Anbringungen hingewiesen, mit denen verschiedene Funktionsrealisierungen erreicht werden, wie dies oben im allgemeinen Teil der Beschreibung angegeben ist. Es kann darüber hinaus vorgesehen sein, dass die Trommel 2 und/oder der Laugenbehälter 3 zumindest bereichsweise mit einem katalytischen Material beschichtet sind.It is particularly preferred if the additional element and / or the lateral surface 12 is formed at specific subregions for realizing the induction heating device 11. This local attachment of the additional elements and / or the configuration of the subregions of the lateral surface 12 can be functionally specific. In this connection, reference should be made to the various possibilities of local attachments with which various functional implementations are achieved, as indicated above in the general part of the description. It can also be provided that the drum 2 and / or the tub 3 are at least partially coated with a catalytic material.

Insbesondere ist die Induktionsheizvorrichtung 11 zumindest im Bereich einer nicht näher dargestellten Bodenscheibe und/oder eines Stirnbodens der Trommel 2 ausgebildet. Vorzugsweise sind die Induktionsspulen der Induktionsheizvorrichtung 11 außerhalb der Trommel 2 und benachbart dazu positioniert.In particular, the induction heating device 11 is formed at least in the region of a bottom disk and / or a front bottom of the drum 2, which are not shown in greater detail. Preferably, the induction coils of the induction heater 11 are positioned outside and adjacent to the drum 2.

Insbesondere ist zumindest eine Induktionsspule der Induktionsheizvorrichtung 11 so ausgestaltet, dass sie den Laugenbehälter 3 klammerartig umgreift. Besonders bevorzugt erweist es sich, wenn die Induktionsheizvorrichtung 11 eine Induktionsspulenscheibe umfasst, welche einen Durchmesser entsprechend dem Durchmesser d1 des Laugenbehälters 3 aufweist.In particular, at least one induction coil of the induction heating device 11 is designed such that it encompasses the tub 3 in a clamp-like manner. It is particularly preferred if the induction heating device 11 comprises an induction coil disc which has a diameter corresponding to the diameter d1 of the tub 3.

Die Induktionsheizvorrichtung 11 ist insbesondere zum Erzeugen und/oder Erhalten von definierten und somit gewünschten spezifischen räumlichen und/oder zeitlichen Temperaturgradienten in der Waschlauge 4 und/oder den Wäschestücken ausgebildet. Insbesondere ist dabei vorgesehen, dass die Induktionsheizvorrichtung 11 zum Heizen der Trommel 2 nur in einem Bereich 13 außerhalb eines mit der Waschlauge 4 in Kontakt stehenden Bereichs 14 ausgebildet ist. Dies ist durch eine Steuereinheit, welche nicht dargestellt ist, gesteuert beziehungsweise geregelt, wobei dies insbesondere bei sich drehender Trommel 2 besonders vorteilhaft ist, da immer der außerhalb der Waschlauge 4 sich befindende Teil der Trommel 2 beheizt wird und dann beim Eintauchen in die Waschlauge 4 ein Wärmeübertrag von diesem Teil der Trommel 2 in die Waschlauge 4 und/oder die Wäschestücke stattfindet. Die Trommel 2 kann um eine senkrecht zur Figurenebene orientierte Achse A sowohl im als auch gegen den Uhrzeigersinn gedreht werden.The induction heating device 11 is designed in particular for generating and / or maintaining defined and thus desired specific spatial and / or temporal temperature gradients in the wash liquor 4 and / or the laundry items. In particular, it is provided that the induction heating device 11 is designed for heating the drum 2 only in a region 13 outside a region 14 in contact with the wash liquor 4. This is controlled or regulated by a control unit, which is not shown, and this is particularly advantageous in particular with rotating drum 2, since always outside of the wash liquor 4 located part of the drum 2 is heated and then immersed in the wash liquor. 4 a heat transfer from this part of the drum 2 takes place in the wash liquor 4 and / or the laundry items. The drum 2 can be a perpendicular to the Figure plane oriented axis A are rotated both clockwise and counterclockwise.

Claims (13)

  1. Domestic appliance for the care of laundry items, having a drum (2) for receiving the laundry items and a heating device for heating the laundry items and/or the wash liquor (4), wherein the heating device is embodied as an induction heating device (11) with at least one induction coil, the drum (2) is part of the induction heating device (11) and is embodied as a receiver of signals from at least one induction coil of the induction heating device (11) and a facility for operating the induction heating device (11) is included, characterised in that the facility for operating the induction heating device (11) is embodied such that operation of the induction heating device (11) takes place in a phase-synchronous manner with the rotation of the drum (2) and one or a number of sub-regions of the drum (2) is or are included in the inductively operating heating device (11) as a function of the phase position, the switch-on frequency and the operating duration of the heating device (11).
  2. Domestic appliance according to claim 1 or 2, characterised in that the drum (2) is made of ferromagnetic material, in particular ferromagnetic stainless steel, at least in part.
  3. Domestic appliance according to one of the preceding claims, characterised in that at least one additional element, in particular as a further surface for the induction heating device (11), is arranged on the drum (2) in addition to the drum lateral surface (12) in order to realise the induction heating device (11).
  4. Domestic appliance according to claim 3, characterised in that the additional element is embodied as a switching circuit, in particular an induction coil.
  5. Domestic appliance according to claim 4, characterised in that the switching circuit is a printed circuit board.
  6. Domestic appliance according to one of the preceding claims, characterised in that the drum (2) and/or an outer tub (3) are coated with a catalytic material at least in part.
  7. Domestic appliance according to one of the preceding claims, characterised in that components of the induction heating device (11) are embodied at least on the drum lateral surface (12) in the region of an agitator (7 to 10) to agitate the laundry while the drum (2) rotates, in the drum (2) and/or in the agitator (7 to 10) itself.
  8. Domestic appliance according to one of the preceding claims, characterised in that components of the induction heating device (11) are embodied at least in the region of a backsheet and/or a frontsheet of the drum (2).
  9. Domestic appliance according to one of the preceding claims, characterised in that at least one induction coil of the induction heating device (11) encompasses an outer tub (3) in a clamp-like manner.
  10. Domestic appliance according to one of the preceding claims, characterised in that the induction heating device (11) comprises an induction coil disk, which has a diameter greater than or equal to half the diameter (d1/2) of the outer tub (3), in particular of substantially the whole diameter (d1) of the outer tub (3).
  11. Domestic appliance according to one of the preceding claims, characterised in that the induction heating device (11) is embodied to generate and/or maintain spatial and/or temporal temperature gradients in the wash liquor (4) and/or the laundry items.
  12. Domestic appliance according to one of the preceding claims, characterised in that the induction heating device (11) is only embodied outside of a region (13) in contact with the wash liquor (4) at least temporarily during a heating process to heat the drum (2).
  13. Method for heating wash liquor (4) and/or laundry items in a drum (2) of a domestic appliance (1) for the care of laundry items, wherein the domestic appliance (1) is embodied with the drum (2) for receiving laundry items and with a heating device as an induction heating device (11) having at least one induction coil and wherein the drum (2) is part of the induction heating device (11) and is embodied as a receiver of signals from at least one induction coil of the induction heating device (11), the heating is performed by the inductively operating heating device (11), characterised in that the inductively operating heating device (11) is operated in a phase-synchronous manner with the rotation of the drum (2) and one or a number of sub-regions of the drum (2) is or are included in the inductively operated heating device (11) as a function of the phase position, the switch-on frequency and the operating duration of the heating device (11).
EP09736235.4A 2008-10-29 2009-10-16 Domestic appliance for the care of laundry items having a heating device and method for heating suds and/or laundry items in a drum of a domestic appliance Not-in-force EP2350376B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL09736235T PL2350376T3 (en) 2008-10-29 2009-10-16 Domestic appliance for the care of laundry items having a heating device and method for heating suds and/or laundry items in a drum of a domestic appliance

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008043281A DE102008043281A1 (en) 2008-10-29 2008-10-29 Domestic appliance for the care of laundry with a heating device and method for heating a wash and / or laundry in a drum of a household appliance
PCT/EP2009/063583 WO2010049289A1 (en) 2008-10-29 2009-10-16 Domestic appliance for the care of laundry items having a heating device and method for heating suds and/or laundry items in a drum of a domestic appliance

Publications (2)

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EP2350376A1 EP2350376A1 (en) 2011-08-03
EP2350376B1 true EP2350376B1 (en) 2016-02-24

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EP09736235.4A Not-in-force EP2350376B1 (en) 2008-10-29 2009-10-16 Domestic appliance for the care of laundry items having a heating device and method for heating suds and/or laundry items in a drum of a domestic appliance

Country Status (4)

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EP (1) EP2350376B1 (en)
DE (1) DE102008043281A1 (en)
PL (1) PL2350376T3 (en)
WO (1) WO2010049289A1 (en)

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PL2350376T3 (en) 2016-08-31
DE102008043281A1 (en) 2010-05-06
EP2350376A1 (en) 2011-08-03
WO2010049289A1 (en) 2010-05-06

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