EP2215301A1 - Method for operating a washing machine having a heating unit - Google Patents

Method for operating a washing machine having a heating unit

Info

Publication number
EP2215301A1
EP2215301A1 EP08855287A EP08855287A EP2215301A1 EP 2215301 A1 EP2215301 A1 EP 2215301A1 EP 08855287 A EP08855287 A EP 08855287A EP 08855287 A EP08855287 A EP 08855287A EP 2215301 A1 EP2215301 A1 EP 2215301A1
Authority
EP
European Patent Office
Prior art keywords
carrier
heating element
washing machine
heating
recess
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
EP08855287A
Other languages
German (de)
French (fr)
Other versions
EP2215301B1 (en
Inventor
Volker Block
Irina Maier
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.)
EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Geratebau 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 EGO Elektro Geratebau GmbH filed Critical EGO Elektro Geratebau GmbH
Priority to PL08855287T priority Critical patent/PL2215301T3/en
Priority to SI200830629T priority patent/SI2215301T1/en
Publication of EP2215301A1 publication Critical patent/EP2215301A1/en
Application granted granted Critical
Publication of EP2215301B1 publication Critical patent/EP2215301B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • D06F39/40—
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/10—Temperature of washing liquids; Heating means therefor

Definitions

  • the invention relates to a method for operating a washing machine with a heating device, in particular for generating steam in the washing machine.
  • the invention has for its object to provide an aforementioned method, can be overcome with the disadvantages of the prior art and in particular the scope of a washing machine can be extended without much effort and preferably the heater can be used for other purposes.
  • the heating device has a carrier and at least one planar heating element arranged thereon.
  • the heating element is applied flat on the support, wherein above all the areal or planar character of the heating element is important.
  • the carrier has, in a region, advantageously in a central region, a depression which runs over a greater length or runs along the carrier.
  • a defined outflow of water from the carrier can be achieved.
  • a certain concentration of water can be achieved in a certain range in order, for example, to be able to evaporate or heat it in a particularly targeted and efficient manner.
  • the above-described heater is placed at the bottom of the washing machine tub between its lower portion and the drum.
  • a possible domed shape of the heater can advantageously serve to ensure that the distance between the drum and the washing machine tub does not have to be too large. From the curvature or the radius forth, the heater can correspond to the washing machine tub.
  • steam is generated in the washing machine or with the heating device.
  • only one heating element is operated, which is located in the region of the depression, as has been described above.
  • this saves energy, since other heating elements arranged next to it, which usually have less water in their vicinity, are not operated, since they would be less efficient. They would contribute much less to steam production.
  • water can be introduced as well as possible in the depression, which is why it can be heated particularly well here for evaporation.
  • a temperature and thus the evaporation can be controlled as well as possible via a temperature sensor.
  • this can be done for the evaporation tion provided water by a corresponding pump or other similar device so applied to the heater or sprayed that it collects in the well and is completely evaporated before draining.
  • the carrier may have in its longitudinal course a longitudinal groove as said recess.
  • the longitudinal channel can basically be designed as desired, it is advantageous that it is rounded.
  • the entire carrier is substantially curved or rounded with a channel shape or in the manner of a spade and forms itself with its course the depression.
  • a curvature may be formed substantially uniform, in particular over the entire length of the carrier away. This means that the water can drain particularly well from the carrier in the manner of a gutter or even before it can collect as well as possible.
  • the heater may fall after installation in the washing machine in its longitudinal course, preferably slightly inclined, so that thereon water runs off.
  • the channel shape is advantageous because it both causes a certain quantitative concentration of the water thereon or flowing on it and also allows a good drainage.
  • the heating device drops to its free end.
  • the heating device can advantageously be installed so that it runs with its longitudinal direction or the direction of the recess approximately parallel to a rotational axis of the drum.
  • At least one heating element of the carrier advantageously extends over its substantial length.
  • a heating element can either be provided as a full surface or cover a surface and, for example, be meander-shaped.
  • a heating element is provided on the outside of the carrier, ie in the region where the depression projects beyond the course of the carrier or along a vertex or along a vertex line of the depression. It can thus be achieved that, with the heating device built into the washing machine, the depression or its apex line forms the deepest region of the heating device. Here the water collects. It can happen on the one hand.
  • the heating element is also arranged for optimum heating or evaporation of this water.
  • the arrangement of the heating element on the outside of the carrier or in the installed state at the bottom also has the advantage that lime deposits or the like. not directly on the heating element are present, but only on the support surface. Particularly advantageous are all heating elements on the same side, namely the outside or bottom, provided.
  • At least one first heating element as mentioned above is provided in the region of the depression and at least one second heating element is located next to the side edge or to the longitudinal side of the carrier.
  • second heating elements are provided on both sides of the first heating element, which heating elements are in particular the same and the same size. It is advantageous if the first heating element and the second heating elements can each be controlled separately from each other depending on the desired mode. This will be explained in more detail below.
  • a temperature sensor may be provided on the carrier.
  • the temperature sensor similar to the heating elements, provided on the outside or on the underside of the recess on the carrier, in particular exactly at the recess. So can the Temperature sensor measure the temperature of the heater or especially of the heating element at the recess and can be concluded that a water temperature when the heating element is completely immersed in water for a heating operation, or for determining a temperature for an evaporator operation.
  • two such temperature sensors are provided, both on the same side. In this case, it may be advantageous to provide the temperature sensors in each case close to one end of the carrier, in particular in each case at the recess.
  • the temperature of the heater can be controlled well.
  • An alternative possibility for measuring the temperature or for replacing the aforementioned temperature sensors is to measure the electrical resistance of the heating element, as is generally known to those skilled in the art. This electrical resistance may just be an NTC or PTC resistor for better measurement.
  • a conductivity measuring device may be provided on the carrier. It may be constructed, for example, in thick film technology and have two electrodes, which are covered with a cover layer and protected against the wash liquor or the wash liquor.
  • Such conductivity measuring devices are basically known from the prior art, see, for example, DE 10 2005 007 935 A1 or DE 10 2006 025 622 A1. This conductivity measuring device can serve to determine properties of the wash liquor, in particular a degree of contamination or the like.
  • the carrier may have a functional layer.
  • This may, for example, have an anti-adhesion effect, in particular in the manner of a PTFE layer.
  • Other functions may be insulation properties for electrical insulation or resistance to aggressive media such as water, steam or lime, especially in the wash liquor.
  • An aforementioned functional layer having an anti-adhesive effect is advantageous, above all, on an upper side of the heating device, so that no deposits can form here because of the water located thereon.
  • the heater By the heater, a heating power of just under 1000 watts can be achieved on the heating element along the depression.
  • the heating power is less than 800 watts, since then according to the regulations of the energy supplier switching or clocking the individual heating elements is possible as often as possible.
  • a total power of up to about 2000 watts can be achieved.
  • the heating device or the washing machine In a further operating mode of the heating device or the washing machine, it can be operated so that the water is to be heated in the washing machine or in the washing machine tub for a washing process. Then advantageously all heating elements of the heater are operated or controlled, with their precise control can be done by the aforementioned temperature sensors.
  • FIG. 1 is a bottom perspective view of a heater
  • Fig. 2 is an oblique view from above of the heater according to
  • FIG. 1 Fig. 1, Fig. 3, the installation situation of the heater of FIG. 1 in a
  • a heating device 11 is shown in an oblique view from below. It consists of a carrier 13 which is elongated and curved in the manner of a round groove.
  • the carrier 13 is advantageously made of a suitable steel for such applications, for example, coated with a corresponding insulating layer which is glass-containing or enamel. This is known from DE 19803506 A1.
  • Such an insulating layer is generally advantageously provided on the outer side 14, which lies in the installed state according to FIGS. 3 and 4 at the bottom, possibly also on the inner side 15.
  • the carrier 13 has on the outer side 14, so to speak at the apex of the channel, an elongated first heating element 17.
  • This is shown as a surface, but in detail may also be designed differently, for example, with the aforementioned elongated meander shape odgl .. Separated by trenches or with a certain distance thereto are on both sides.
  • a second heating element 18a and a third heating element 18b are provided. These may in principle be similar, ie either full-surface or meandering.
  • the heating elements may each have the same power, below But also different performance, in particular, the first or middle heating element 17 may have the strongest performance.
  • a temperature sensor 20a near the one end and a temperature sensor 20b near the other end are provided. These are designed as conventional temperature sensors in thick film technology, in particular for temperature measurement by resistance measurement.
  • Both the heating elements 17 and 18a and 18b and the temperature sensors 20a and 20b are connected via webs not shown to a protruding portion 24 of the carrier 13 at its one end with connection pads 25.
  • the terminal pads 25 are formed as metallized areas on the support 13 in the area 24 and allow the attachment of a group connector for electrical connection, as shown in FIG. 4.
  • the protruding region 24 is separated from the rest of the carrier 13 by a circumferential seal 22.
  • This seal 22 is made of rubber and is sprayed by two-component syringes directly on the carrier 13 and this is encapsulated. This ensures a good sealing effect and good mechanical strength as a structural unit.
  • the heating device 11 may be encapsulated with a plastic flange, so that it can be mounted directly in a washing machine vat. Then the plastic flange is the second component. This also allows a good sealing function can be achieved.
  • a washing machine 28 is shown in a sectional view from the front. It has a drum 29 in a washing machine tub 30 in the usual way. The drum 29 can rotate about the central axis of rotation.
  • the heating device 11 according to FIG. 1 is arranged in the lower region and is completely immersed in washing liquid. te 32 immersed, of course, collects in the lower part of the washing machine tub 30.
  • the side view from FIG. 4 makes it clear how a connection plug 26 is plugged onto the protruding region 24 with the connection fields 25 according to FIG. 1 for electrically connecting the entire heating device 11, that is to say both the heating elements 17 and 18 a and 18 b and the temperature sensors 20 a and 20b.
  • the obliquely sloping installation of the heater 11 in the washing machine 28 is inventively set by the installation situation, under certain circumstances, appropriate supports or holders may be provided. On the one hand, this inclination causes the water from the heating device 11 to drain off well when the washing liquor is being pumped off, so that no residues and thus soiling result. As a result, the heating effect of the heater 11 in the wash liquor 32 is not affected.
  • this water can be evaporated by strong and rapid heating, which spreads inside the washing machine 28 or especially in the interior of the drum -29 steam. This can be used for a special treatment of laundry therein, for example for refreshment.
  • the channel shape of the heater 1 1 causes the collection of water just in the vicinity of the apex of the channel and thus at the middle heater.
  • the further ren can be achieved by the sloping arrangement of the heater here, a movement and distribution of water over the entire first heating element 17.
  • the energy input can be regulated via the temperature sensors 20a and 20b on the heating device 11 by measuring the temperature, depending on the steam generating operation or the heating operation of the heating device 11. Furthermore, a measurement of the properties of the washing liquor can take place by means of a conductivity measuring device (not shown). Finally, it is still possible to provide the inner side 15 of the carrier 13, on which neither heating elements nor other sensors are provided here in the exemplary embodiment, with an anti-adhesion coating as mentioned above. Even so, in addition to the oblique installation deposits can be avoided or at least greatly reduced.

Abstract

The invention relates to a method for operating a washing machine (28) having a heating unit (11), wherein the heating unit comprises a carrier (13) and at least one planar heating element (17, 18) disposed thereon. At least one first heating element (17) is attached to the carrier (13) in a planar manner, wherein the carrier has a recess extending in the longitudinal direction in the center region. The washing machine (28) has a washing machine barrel (30) and a drum (29) therein, wherein the heating unit (11) is displaced at the bottom in the washing machine barrel (30) outside of the drum (29). A heating element is provided on the outside of the carrier in the region of the recess in the region along an apex, or along an apex of the recess, wherein only said heating element (17) is operated in the region of the recess for creating steam in the washing machine (28).

Description

Beschreibung Verfahren zum Betrieb einer Waschmaschine mit einer Heizeinrichtunq Description Method for operating a washing machine with a heating device
Anwendungsgebiet und Stand der TechnikField of application and state of the art
Die Erfindung betrifft ein Verfahren zum Betrieb einer Waschmaschine mit einer Heizeinrichtung, insbesondere zur Dampferzeugung in der Waschmaschine.The invention relates to a method for operating a washing machine with a heating device, in particular for generating steam in the washing machine.
Es ist aus dem Stand der Technik bekannt, in Waschmaschinen elektrische Heizeinrichtungen bzw. Heizeinrichtungen mit elektrischen Heizelementen zu verwenden, die in einem Waschmaschinenbottich der Waschmaschine unterhalb einer Trommel angeordnet sind. Sie heizen beispielsweise das für das Waschen benötigte Wasser auf eine gewünschte Temperatur auf. Hierfür werden üblicherweise sogenannte Rohrheizkörper verwendet, es können jedoch auch flächige Heizelemente verwendet werden.It is known from the prior art to use in washing machines electric heaters or heaters with electrical heating elements, which are arranged in a washing machine tub of the washing machine below a drum. For example, they heat the water needed for washing to a desired temperature. For this purpose, so-called tubular heaters are usually used, but it can also be used flat heating elements.
Aufgabe und LösungTask and solution
Der Erfindung liegt die Aufgabe zugrunde, ein eingangs genanntes Verfahren zu schaffen, mit dem Nachteile des Standes der Technik überwunden werden können und insbesondere der Funktionsumfang einer Waschmaschine ohne großen Aufwand erweitert werden kann sowie vorzugsweise die Heizeinrichtung für weitere Zwecke verwendet werden kann.The invention has for its object to provide an aforementioned method, can be overcome with the disadvantages of the prior art and in particular the scope of a washing machine can be extended without much effort and preferably the heater can be used for other purposes.
Gelöst wird diese Ausgabe durch ein Verfahren mit den Merkmalen des Anspruchs 1. Vorteilhafte sowie bevorzugte Ausgestaltungen der Erfindung sind Gegenstand der weiteren Ansprüche und werden im Folgenden näher erläutert. Dabei werden manche der Merkmale nur für das Verfahren, die Heizeinrichtung oder die Waschmaschine erläutert. Sie sollen jedoch unabhängig davon immer für das Verfahren gelten kön- nen. Der Wortlaut der Ansprüche wird durch ausdrückliche Bezugnahme zum Inhalt der Beschreibung gemacht.This edition is achieved by a method having the features of claim 1. Advantageous and preferred embodiments of the invention are the subject of further claims and are explained in more detail below. Some of the features are explained only for the process, the heater or the washing machine. However, regardless of this, they should always apply to the procedure. NEN. The wording of the claims is incorporated herein by express reference.
Es ist vorgesehen, dass die Heizeinrichtung einen Träger und mindestens ein darauf angeordnetes flächiges Heizelement aufweist. Das Heizelement ist flächig auf dem Träger aufgebracht, wobei vor allem der flächige oder flächig verlaufende Charakter des Heizelements wichtig ist. Der Träger weist in einem Bereich, vorteilhaft in einen mittleren Bereich, eine Vertiefung auf, die über eine größere Länge verläuft bzw. längs des Trägers verläuft. Dadurch kann, wie nachfolgend noch näher erläutert wird, ein definierter Abfluss von Wasser von dem Träger erreicht werden. Des weiteren kann eine gewisse Konzentration von Wasser in einem bestimmten Bereich erreicht werden, um hier beispielsweise besonders gezielt und effizient verdampfen oder heizen zu können. Die vorbeschriebene Heizeinrichtung wird unten in dem Waschmaschinenbottich zwischen dessen unteren Bereich und der Trommel angeordnet. Eine mögliche gewölbte Form der Heizeinrichtung kann vorteilhaft dazu dienen, dass der Abstand zwischen Trommel und Waschmaschinenbottich nicht zu groß sein muss. Von der Wölbung bzw. dem Radius her kann die Heizeinrichtung dem Waschmaschinenbottich entsprechen.It is provided that the heating device has a carrier and at least one planar heating element arranged thereon. The heating element is applied flat on the support, wherein above all the areal or planar character of the heating element is important. The carrier has, in a region, advantageously in a central region, a depression which runs over a greater length or runs along the carrier. As a result, as will be explained in more detail below, a defined outflow of water from the carrier can be achieved. Furthermore, a certain concentration of water can be achieved in a certain range in order, for example, to be able to evaporate or heat it in a particularly targeted and efficient manner. The above-described heater is placed at the bottom of the washing machine tub between its lower portion and the drum. A possible domed shape of the heater can advantageously serve to ensure that the distance between the drum and the washing machine tub does not have to be too large. From the curvature or the radius forth, the heater can correspond to the washing machine tub.
Erfindungsgemäß wird in der Waschmaschine bzw. mit der Heizeinrichtung Dampf erzeugt. Dazu wird nur ein Heizelement betrieben, welches sich im Bereich der Vertiefung befindet, wie es vorstehend beschrieben worden ist. Dies bewirkt nämlich einerseits eine Energieeinsparung, da andere daneben angeordnete Heizelemente, welche üblicherweise weniger Wasser in ihrer Nähe aufweisen, nicht betrieben werden, da sie weniger effizient wären. Sie würden nämlich viel weniger zur Dampferzeugung beitragen. Des weiteren kann gerade in der Vertiefung möglichst gut Wasser eingebracht werden, deswegen kann es hier auch besonders gut beheizt werden zum Verdampfen. Auch hier kann über einen Temperatursensor eine Temperatur und somit die Verdampfung möglichst gut geregelt werden. Des weiteren kann das für die Verdamp- fung vorgesehene Wasser durch eine entsprechende Pumpe oder eine sonstige ähnliche Einrichtung so auf die Heizeinrichtung aufgebracht oder aufgesprüht werden, dass es sich in der Vertiefung sammelt und vor dem Abfließen vollständig verdampft wird.According to the invention, steam is generated in the washing machine or with the heating device. For this purpose, only one heating element is operated, which is located in the region of the depression, as has been described above. On the one hand, this saves energy, since other heating elements arranged next to it, which usually have less water in their vicinity, are not operated, since they would be less efficient. They would contribute much less to steam production. Furthermore, water can be introduced as well as possible in the depression, which is why it can be heated particularly well here for evaporation. Again, a temperature and thus the evaporation can be controlled as well as possible via a temperature sensor. Furthermore, this can be done for the evaporation tion provided water by a corresponding pump or other similar device so applied to the heater or sprayed that it collects in the well and is completely evaporated before draining.
In Ausgestaltung der Erfindung kann der Träger in seinem Längsverlauf eine Längsrinne aufweisen als genannte Vertiefung. Die Längsrinne kann grundsätzlich beliebig ausgebildet sein, vorteilhaft ist sie abgerundet. Besonders vorteilhaft ist der gesamte Träger im Wesentlichen gewölbt bzw. abgerundet mit einer Rinnenform bzw. nach Art eines Spatens und bildet selber mit seinem Verlauf die Vertiefung. Eine Wölbung kann im Wesentlichen gleichmäßig ausgebildet sein, insbesondere auch über die gesamte Länge des Trägers hinweg. Dies bedeutet also, dass das Wasser besonders gut von dem Träger nach Art einer Rinne ablaufen kann bzw. sich auch vorher möglichst gut darin sammeln kann. Es ist zwar grundsätzlich möglich, an dem Träger mehrere Vertiefungen vorzusehen, bevorzugt wird jedoch eine einzige Vertiefung.In an embodiment of the invention, the carrier may have in its longitudinal course a longitudinal groove as said recess. The longitudinal channel can basically be designed as desired, it is advantageous that it is rounded. Particularly advantageously, the entire carrier is substantially curved or rounded with a channel shape or in the manner of a spade and forms itself with its course the depression. A curvature may be formed substantially uniform, in particular over the entire length of the carrier away. This means that the water can drain particularly well from the carrier in the manner of a gutter or even before it can collect as well as possible. Although it is in principle possible to provide a plurality of recesses on the carrier, but preferably a single recess.
Die Heizeinrichtung kann nach Einbau in die Waschmaschine in ihrem Längsverlauf abfallen, vorzugsweise leicht schräg, so dass darauf befindliches Wasser abläuft. Hierzu ist auch die Rinnenform von Vorteil, da sie sowohl eine gewisse mengenmäßige Konzentration des darauf befindlichen oder darauf strömenden Wassers bewirkt als auch ein gutes Abfließen ermöglicht. Besonders vorteilhaft fällt die Heizeinrichtung zu ihrem freien Ende hin ab. Dabei kann die Heizeinrichtung vorteilhaft so eingebaut werden, dass sie mit ihrer Längsrichtung bzw. der Richtung der Vertiefung in etwa parallel zu einer Drehachse der Trommel verläuft.The heater may fall after installation in the washing machine in its longitudinal course, preferably slightly inclined, so that thereon water runs off. For this purpose, the channel shape is advantageous because it both causes a certain quantitative concentration of the water thereon or flowing on it and also allows a good drainage. Particularly advantageously, the heating device drops to its free end. In this case, the heating device can advantageously be installed so that it runs with its longitudinal direction or the direction of the recess approximately parallel to a rotational axis of the drum.
Ähnlich wie die Vertiefung erstreckt sich vorteilhaft zumindest ein Heizelement des Trägers über seine wesentliche Länge. Ein solches Heizelement kann entweder als volle Fläche vorgesehen sein oder aber eine Fläche bedecken und beispielsweise mäanderförmig ausgebildet sein. Grundsätzlich ist es zwar möglich, Heizelemente an beiden Seiten des Trägers vorzusehen. Vorteilhaft ist ein Heizelement an der Außenseite des Trägers vorgesehen, also in dem Bereich, wo die Vertiefung über den Verlauf des Trägers übersteht bzw. entlang eines Scheitelpunkts oder entlang einer Scheitellinie der Vertiefung. So kann erreicht werden, dass bei in die Waschmaschine eingebauter Heizeinrichtung die Vertiefung bzw. deren genannte Scheitellinie den tiefsten Bereich der Heizeinrichtung bildet. Hier sammelt sich das Wasser. Es kann zwar einerseits ablaufen. Auf alle Fälle jedoch ist in diesem Bereich, in dem sich das Wasser am längsten befindet, auch das Heizelement angeordnet für eine optimale Aufheizung oder Verdampfung dieses Wassers. Die Anordnung des Heizelements an der Außenseite des Trägers bzw. im Einbauzustand an der Unterseite weist auch den Vorteil auf, dass Kalkablagerungen odgl. nicht direkt am Heizelement vorhanden sind, sondern nur an der Trägeroberfläche. Besonders vorteilhaft sind sämtliche Heizelemente auf derselben Seite, nämlich der Außenseite bzw. Unterseite, vorgesehen.Like the recess, at least one heating element of the carrier advantageously extends over its substantial length. Such a heating element can either be provided as a full surface or cover a surface and, for example, be meander-shaped. In principle, it is possible to provide heating elements on both sides of the carrier. Advantageously, a heating element is provided on the outside of the carrier, ie in the region where the depression projects beyond the course of the carrier or along a vertex or along a vertex line of the depression. It can thus be achieved that, with the heating device built into the washing machine, the depression or its apex line forms the deepest region of the heating device. Here the water collects. It can happen on the one hand. In any case, however, in this area, where the water is the longest, the heating element is also arranged for optimum heating or evaporation of this water. The arrangement of the heating element on the outside of the carrier or in the installed state at the bottom also has the advantage that lime deposits or the like. not directly on the heating element are present, but only on the support surface. Particularly advantageous are all heating elements on the same side, namely the outside or bottom, provided.
In Ausgestaltung der Erfindung ist mindestens ein erstes Heizelement wie vorgenannt im Bereich der Vertiefung vorgesehen und mindestens ein zweites Heizelement befindet sich daneben zum Seitenrand bzw. zur Längsseite des Trägers hin. Besonders vorteilhaft sind zu beiden Seiten des ersten Heizelements jeweils zweite Heizelemente vorgesehen, die insbesondere gleich und gleich groß ausgebildet sind. Dabei ist es von Vorteil, wenn das erste Heizelement und die zweiten Heizelemente jeweils separat voneinander angesteuert werden können je nach gewünschter Betriebsart. Dies wird nachfolgend noch näher erläutert.In an embodiment of the invention, at least one first heating element as mentioned above is provided in the region of the depression and at least one second heating element is located next to the side edge or to the longitudinal side of the carrier. In each case, in each case second heating elements are provided on both sides of the first heating element, which heating elements are in particular the same and the same size. It is advantageous if the first heating element and the second heating elements can each be controlled separately from each other depending on the desired mode. This will be explained in more detail below.
In Ausgestaltung der Erfindung kann ein Temperatursensor an dem Träger vorgesehen sein. Auch dieser kann in Dickschichttechnik ausgebildet sein. Vorteilhaft ist der Temperatursensor, ähnlich wie die Heizelemente, an der Außenseite bzw. an der Unterseite der Vertiefung an dem Träger vorgesehen, insbesondere genau an der Vertiefung. So kann der Temperatursensor die Temperatur der Heizeinrichtung bzw. vor allem des Heizelements an der Vertiefung messen und daraus kann auf eine Wassertemperatur geschlossen werden, wenn das Heizelement vollständig in Wasser eingetaucht ist für einen Heizbetrieb, oder zur Bestimmung einer Temperatur für einen Verdampferbetrieb. In nochmals weiterer Ausgestaltung der Erfindung sind zwei derartige Temperatursensoren vorgesehen, und zwar beide auf derselben Seite. Dabei kann es vorteilhaft vorgesehen sein, die Temperatursensoren jeweils nahe an einem Ende des Trägers vorzusehen, und zwar insbesondere jeweils an der Vertiefung. So kann vor allem bei dem erfindungsgemäßen Verdampferbetrieb die Temperatur der Heizeinrichtung gut geregelt werden. Eine alternative Möglichkeit zur Temperaturmessung bzw. zum Ersatz der vorgenannten Temperatursensoren besteht darin, den elektrischen Widerstand des Heizelements zu messen, wie es dem Fachmann grundsätzlich auch bekannt ist. Dieser elektrische Widerstand kann gerade für eine bessere Messung ein NTC- oder ein PTC-Widerstand sein.In an embodiment of the invention, a temperature sensor may be provided on the carrier. This can also be designed in thick film technology. Advantageously, the temperature sensor, similar to the heating elements, provided on the outside or on the underside of the recess on the carrier, in particular exactly at the recess. So can the Temperature sensor measure the temperature of the heater or especially of the heating element at the recess and can be concluded that a water temperature when the heating element is completely immersed in water for a heating operation, or for determining a temperature for an evaporator operation. In yet another embodiment of the invention, two such temperature sensors are provided, both on the same side. In this case, it may be advantageous to provide the temperature sensors in each case close to one end of the carrier, in particular in each case at the recess. Thus, especially in the evaporator operation according to the invention, the temperature of the heater can be controlled well. An alternative possibility for measuring the temperature or for replacing the aforementioned temperature sensors is to measure the electrical resistance of the heating element, as is generally known to those skilled in the art. This electrical resistance may just be an NTC or PTC resistor for better measurement.
In nochmals weiterer Ausgestaltung der Erfindung kann eine Leitfähigkeitsmesseinrichtung an dem Träger vorgesehen sein. Sie kann beispielsweise in Dickschichttechnik aufgebaut sein und zwei Elektroden aufweisen, welche mit einer Abdeckschicht abgedeckt und gegen die Waschflotte bzw. die Waschlauge geschützt sind. Derartige Leitfähigkeitsmesseinrichtungen sind grundsätzlich aus dem Stand der Technik bekannt, siehe beispielsweise die DE 10 2005 007 935 A1 oder die DE 10 2006 025 622 A1. Diese Leitfähigkeitsmesseinrichtung kann dazu dienen, Eigenschaften der Waschflotte zu bestimmen, insbesondere einen Verschmutzungsgrad odgl..In yet another embodiment of the invention, a conductivity measuring device may be provided on the carrier. It may be constructed, for example, in thick film technology and have two electrodes, which are covered with a cover layer and protected against the wash liquor or the wash liquor. Such conductivity measuring devices are basically known from the prior art, see, for example, DE 10 2005 007 935 A1 or DE 10 2006 025 622 A1. This conductivity measuring device can serve to determine properties of the wash liquor, in particular a degree of contamination or the like.
In nochmals weiter Ausgestaltung der Erfindung kann der Träger eine Funktionsschicht aufweisen. Diese kann beispielsweise eine Anti-Haftwirkung aufweisen, insbesondere nach Art einer PTFE-Schicht. Weitere Funktionen können Isolationseigenschaften sein für eine elektrische Isolierung oder Resistenzeigenschaften gegenüber aggressiven Medien wie Wasser, Wasserdampf oder Kalk, insbesondere in der Waschflotte. Eine vorgenannte Funktionsschicht mit Anti-Haftwirkung ist vor allem auf einer Oberseite der Heizeinrichtung von Vorteil, so dass sich hier keine Ablagerungen wegen des darauf befindlichen Wassers bilden können.In a further embodiment of the invention, the carrier may have a functional layer. This may, for example, have an anti-adhesion effect, in particular in the manner of a PTFE layer. Other functions may be insulation properties for electrical insulation or resistance to aggressive media such as water, steam or lime, especially in the wash liquor. An aforementioned functional layer having an anti-adhesive effect is advantageous, above all, on an upper side of the heating device, so that no deposits can form here because of the water located thereon.
Durch die Heizeinrichtung kann an dem Heizelement entlang der Vertiefung eine Heizleistung von etwas unter 1000 Watt erreicht werden. Vorteilhaft beträgt die Heizleistung weniger als 800 Watt, da dann entsprechend der Vorschriften der Energieversorger ein Schalten bzw. Takten der einzelnen Heizelemente beliebig oft möglich ist. Durch daneben angeordnete Heizelemente kann eine Gesamtleistung von bis zu über 2000 Watt erreicht werden.By the heater, a heating power of just under 1000 watts can be achieved on the heating element along the depression. Advantageously, the heating power is less than 800 watts, since then according to the regulations of the energy supplier switching or clocking the individual heating elements is possible as often as possible. By arranged adjacent heating elements, a total power of up to about 2000 watts can be achieved.
In einer weiteren Betriebsart der Heizeinrichtung bzw. der Waschmaschine kann sie so betrieben werden, dass das Wasser in der Waschmaschine bzw. im Waschmaschinenbottich erhitzt werden soll für einen Waschvorgang. Dann werden vorteilhaft sämtliche Heizelemente der Heizeinrichtung betrieben bzw. angesteuert, wobei ihre genaue Ansteuerung durch die vorgenannten Temperatursensoren erfolgen kann.In a further operating mode of the heating device or the washing machine, it can be operated so that the water is to be heated in the washing machine or in the washing machine tub for a washing process. Then advantageously all heating elements of the heater are operated or controlled, with their precise control can be done by the aforementioned temperature sensors.
Diese und weitere Merkmale gehen außer aus den Ansprüchen auch aus der Beschreibung und den Zeichnungen hervor, wobei die einzelnen Merkmale jeweils für sich allein oder zu mehreren in Form von Unterkombination bei einer Ausführungsform der Erfindung und auf anderen Gebieten verwirklicht sein und vorteilhafte sowie für sich schutzfähige Ausführungen darstellen können, für die hier Schutz beansprucht wird. Die Unterteilung der Anmeldung in einzelne Abschnitte sowie Zwischenüberschriften beschränken die unter diesen gemachten Aussagen nicht in ihrer Allgemeingültigkeit.These and other features will become apparent from the claims but also from the description and drawings, wherein the individual features each alone or more in the form of sub-combination in one embodiment of the invention and in other areas be realized and advantageous and protectable Represent embodiments for which protection is claimed here. The subdivision of the application into individual sections and subheadings does not limit the statements made thereunder in their generality.
Kurzbeschreibung der Zeichnungen Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen schematisch dargestellt und wird im folgenden näher erläutert. In den Zeichnungen zeigen:Brief description of the drawings An embodiment of the invention is shown schematically in the drawings and will be explained in more detail below. In the drawings show:
Fig. 1 eine Schrägansicht von unten auf eine Heizeinrichtung,1 is a bottom perspective view of a heater,
Fig. 2 eine Schrägansicht von oben auf die Heizeinrichtung gemäßFig. 2 is an oblique view from above of the heater according to
Fig. 1 , Fig. 3 die Einbausituation der Heizeinrichtung aus Fig. 1 in eineFig. 1, Fig. 3, the installation situation of the heater of FIG. 1 in a
Waschmaschine von vorne und Fig. 4 die Einbausituation gemäß Fig. 3 in Seitenansicht.Washing machine from the front and Fig. 4, the installation situation of FIG. 3 in side view.
Detaillierte Beschreibung des AusführungsbeispielsDetailed description of the embodiment
In Fig. 1 ist eine erfindungsgemäße Heizeinrichtung 11 in Schrägansicht von unten dargestellt. Sie besteht aus einem Träger 13, der länglich und gewölbt nach Art einer runden Rinne ausgebildet ist. Der Träger 13 besteht vorteilhaft aus einem für derartige Anwendungen geeigneten Stahl, beispielsweise mit einer entsprechenden Isolationsschicht beschichtet, die glashaltig ist oder aus Emaille. Dies ist aus der DE 19803506 A1 bekannt. Eine derartige Isolationsschicht ist in der Regel vorteilhaft an der Außenseite 14, welche im eingebauten Zustand gemäß Fig. 3 und 4 unten liegt, vorgesehen, möglicherweise auch auf der Innenseite 15.In Fig. 1, a heating device 11 according to the invention is shown in an oblique view from below. It consists of a carrier 13 which is elongated and curved in the manner of a round groove. The carrier 13 is advantageously made of a suitable steel for such applications, for example, coated with a corresponding insulating layer which is glass-containing or enamel. This is known from DE 19803506 A1. Such an insulating layer is generally advantageously provided on the outer side 14, which lies in the installed state according to FIGS. 3 and 4 at the bottom, possibly also on the inner side 15.
Der Träger 13 weist an der Außenseite 14, also sozusagen im Scheitelpunkt der Rinne, ein längliches erstes Heizelement 17 auf. Dieses ist als Fläche dargestellt, kann im einzelnen jedoch auch anders ausgebildet sein, beispielsweise mit der vorgenannten länglichen Mäanderform odgl.. Durch Gräben getrennt bzw. mit bestimmtem Abstand dazu sind an beiden Seiten . ein -zweites Heizelement 18a und ein drittes Heizelement 18b vorgesehen. Diese können im Prinzip ähnlich ausgebildet sein, also entweder vollflächig oder mäanderförmig. Des weiteren können die Heizelemente zwar jeweils gleiche Leistung aufweisen, unter Umständen aber auch unterschiedliche Leistung, insbesondere kann das erste bzw. mittlere Heizelement 17 die stärkste Leistung aufweisen.The carrier 13 has on the outer side 14, so to speak at the apex of the channel, an elongated first heating element 17. This is shown as a surface, but in detail may also be designed differently, for example, with the aforementioned elongated meander shape odgl .. Separated by trenches or with a certain distance thereto are on both sides. a second heating element 18a and a third heating element 18b are provided. These may in principle be similar, ie either full-surface or meandering. Furthermore, although the heating elements may each have the same power, below But also different performance, in particular, the first or middle heating element 17 may have the strongest performance.
Des weiteren sind im Bereich des ersten Heizelements 17 bzw. entlang der Scheitellinie der Rinne des Trägers 13 ein Temperatursensor 20a nahe dem einen Ende und ein Temperatursensor 20b nahe dem anderen Ende vorgesehen. Diese sind als übliche Temperatursensoren in Dickschichttechnik ausgebildet, insbesondere zur Temperaturmessung durch Widerstandsmessung.Furthermore, in the region of the first heating element 17 or along the apex line of the channel of the carrier 13, a temperature sensor 20a near the one end and a temperature sensor 20b near the other end are provided. These are designed as conventional temperature sensors in thick film technology, in particular for temperature measurement by resistance measurement.
Sowohl die Heizelemente 17 und 18a und 18b als auch die Temperatursensoren 20a und 20b sind über nicht dargestellte Bahnen an einen überstehenden Bereich 24 des Trägers 13 an seinem einen Ende mit Anschlussfeldern 25 verbunden. Die Anschlussfelder 25 sind dabei als metallisierte Bereiche auf dem Träger 13 im Bereich 24 ausgebildet und ermöglichen das Aufstecken eines Gruppensteckers zum elektrischen Anschluss, wie dies Fig. 4 zeigt. Der überstehende Bereich 24 ist vom übrigen Träger 13 durch eine umlaufende Dichtung 22 getrennt. Diese Dichtung 22 besteht aus Gummi und ist durch Zwei-Komponenten- Spritzen direkt auf den Träger 13 aufgespritzt bzw. dieser ist umspritzt. So wird eine gute Dichtwirkung und eine gute mechanische Festigkeit als Baueinheit gewährleistet. Alternativ und ebenfalls vorteilhaft kann die Heizeinrichtung 11 mit einem Kunststoffflansch umspritzt sein, damit dieser in einem Waschmaschinenbottich direkt montiert werden kann. Dann ist der Kunststoffflansch die zweite Komponente. Auch dadurch kann eine gute Dichtfunktion erreicht werden.Both the heating elements 17 and 18a and 18b and the temperature sensors 20a and 20b are connected via webs not shown to a protruding portion 24 of the carrier 13 at its one end with connection pads 25. The terminal pads 25 are formed as metallized areas on the support 13 in the area 24 and allow the attachment of a group connector for electrical connection, as shown in FIG. 4. The protruding region 24 is separated from the rest of the carrier 13 by a circumferential seal 22. This seal 22 is made of rubber and is sprayed by two-component syringes directly on the carrier 13 and this is encapsulated. This ensures a good sealing effect and good mechanical strength as a structural unit. Alternatively and also advantageously, the heating device 11 may be encapsulated with a plastic flange, so that it can be mounted directly in a washing machine vat. Then the plastic flange is the second component. This also allows a good sealing function can be achieved.
In Fig. 3 ist eine Waschmaschine 28 dargestellt in Schnittansicht von vorne. Sie weist auf übliche Art und Weise eine Trommel 29 in einem Waschmaschinenbottich 30 auf. Die Trommel 29 kann sich dabei um die mittige Drehachse drehen. In dem Zwischenraum zwischen Trommel 29 und Waschmaschinenbottich 30 ist im unteren Bereich die Heizeinrichtung 11 gemäß Fig. 1 angeordnet und ist dabei vollständig in Waschflot- te 32 eingetaucht, die sich natürlich im unteren Bereich des Waschmaschinenbottichs 30 sammelt. Die Seitenansicht aus Fig. 4 macht deutlich, wie an den überstehenden Bereich 24 mit den Anschlussfeldern 25 gemäß Fig. 1 ein Anschlussstecker 26 aufgesteckt ist zum elektrischen Anschluss der gesamten Heizeinrichtung 11 , also sowohl der Heizelemente 17 und 18a und 18b als auch der Temperatursensoren 20a und 20b. Der schräg abfallende Einbau der Heizeinrichtung 11 in die Waschmaschine 28 wird erfindungsgemäß durch die Einbausituation vorgegeben, unter Umständen können entsprechende Stützen oder Halter vorgesehen sein. Diese Schrägstellung bewirkt einerseits, dass beim Abpumpen der Waschflotte 32 das Wasser von der Heizeinrichtung 11 gut abfließt, sodass sich keine Rückstände und damit Verschmutzungen ergeben. Dadurch ist auch die Heizwirkung der Heizeinrichtung 11 in der Waschflotte 32 nicht beeinträchtigt.In Fig. 3, a washing machine 28 is shown in a sectional view from the front. It has a drum 29 in a washing machine tub 30 in the usual way. The drum 29 can rotate about the central axis of rotation. In the intermediate space between the drum 29 and the washing machine tub 30, the heating device 11 according to FIG. 1 is arranged in the lower region and is completely immersed in washing liquid. te 32 immersed, of course, collects in the lower part of the washing machine tub 30. The side view from FIG. 4 makes it clear how a connection plug 26 is plugged onto the protruding region 24 with the connection fields 25 according to FIG. 1 for electrically connecting the entire heating device 11, that is to say both the heating elements 17 and 18 a and 18 b and the temperature sensors 20 a and 20b. The obliquely sloping installation of the heater 11 in the washing machine 28 is inventively set by the installation situation, under certain circumstances, appropriate supports or holders may be provided. On the one hand, this inclination causes the water from the heating device 11 to drain off well when the washing liquor is being pumped off, so that no residues and thus soiling result. As a result, the heating effect of the heater 11 in the wash liquor 32 is not affected.
Für den erfindungsgemäßen Verdampferbetrieb ist es möglich, über einen Zulauf 34 mit Ventil 35 nicht nur allgemein Wasser in die Waschmaschine 28 zu geben zum Waschen. Es kann auch bei trockenem Waschmaschinenbottich 30 Wasser über den Zulauf 34, der genau über der Heizeinrichtung 11 nahe an der Dichtung 22 angeordnet ist, über das Ventil 35 dosiert eine geringe Menge Wasser aufgebracht werden. Dabei werden dann nicht, wie im Heizbetrieb, zum Erhitzen der Waschflotte 32 sämtliche Heizelemente, also alle drei, betrieben, sondern nur das erste Heizelement 17. Dies beheizt nämlich somit den mittleren Bereich, in dem sich eine geringe Menge an Wasser, die auf die Innenseite 15 der Heizeinrichtung 1 1 kommt, befindet und zum freien Ende hin abläuft. So kann dieses Wasser durch starkes und schnelles Erhitzen verdampft werden, wodurch sich im Inneren der Waschmaschine 28 bzw. vor allem im Inneren der Trommel -29 der-Dampf ausbreitet. Dieser kann für eine besondere Behandlung von darin befindlicher Wäsche verwendet werden, beispielsweise zum Auffrischen. Die Rinnenform der Heizeinrichtung 1 1 bewirkt dabei das Sammeln des Wassers eben in der Nähe des Scheitelpunkts der Rinne und somit an der mittleren Heizung. Des weite- ren kann durch die abfallende Anordnung der Heizeinrichtung auch hier eine Bewegung und Verteilung von Wasser über das gesamte erste Heizelement 17 erreicht werden.For the evaporator operation according to the invention, it is possible not only generally water in the washing machine 28 via an inlet 34 with valve 35 for washing. Even with a dry washing machine tub 30, water can be applied via the inlet 34, which is arranged precisely above the heating device 11 close to the seal 22, via the valve 35, and a small amount of water can be applied. In this case, then, as in the heating operation, for heating the wash liquor 32, all the heating elements, ie all three, operated, but only the first heating element 17. Namely, this heated the middle area in which a small amount of water on the Inside 15 of the heater 1 1 comes, is located and runs to the free end. Thus, this water can be evaporated by strong and rapid heating, which spreads inside the washing machine 28 or especially in the interior of the drum -29 steam. This can be used for a special treatment of laundry therein, for example for refreshment. The channel shape of the heater 1 1 causes the collection of water just in the vicinity of the apex of the channel and thus at the middle heater. The further ren can be achieved by the sloping arrangement of the heater here, a movement and distribution of water over the entire first heating element 17.
Über die Temperatursensoren 20a und 20b an der Heizeinrichtung 11 kann der Energieeintrag geregelt werden durch Messung der Temperatur, abhängig vom Dampferzeugungsbetrieb oder vom Heizbetrieb der Heizeinrichtung 11. Des weiteren kann durch eine nicht dargestellte Leitfähigkeitsmesseinrichtung auch noch eine Messung der Eigenschaften der Waschflotte stattfinden. Schließlich ist es noch möglich, die Innenseite 15 des Trägers 13, an der hier im Ausführungsbeispiel weder Heizelemente noch sonstige Sensoren vorgesehen sind, mit einer eingangs genannten Anti-Haft-Beschichtung zu versehen. Auch so können zusätzlich zum schrägen Einbau Ablagerungen vermieden oder zumindest stark reduziert werden. The energy input can be regulated via the temperature sensors 20a and 20b on the heating device 11 by measuring the temperature, depending on the steam generating operation or the heating operation of the heating device 11. Furthermore, a measurement of the properties of the washing liquor can take place by means of a conductivity measuring device (not shown). Finally, it is still possible to provide the inner side 15 of the carrier 13, on which neither heating elements nor other sensors are provided here in the exemplary embodiment, with an anti-adhesion coating as mentioned above. Even so, in addition to the oblique installation deposits can be avoided or at least greatly reduced.

Claims

Patentansprüche claims
1. Verfahren zum Betrieb einer Waschmaschine (28) mit einer Heizeinrichtung (11 ), wobei die Heizeinrichtung einen Träger (13) und mindestens ein darauf angeordnetes flächiges Heizelement (17, 18) aufweist, wobei mindestens ein erstes Heizelement (17) flächig auf den Träger (13) aufgebracht ist und wobei der Träger in einem mittleren Bereich eine längs verlaufende Vertiefung aufweist, wobei die Waschmaschine (28) einen Waschmaschinenbottich (30) und eine Trommel (29) darin aufweist und wobei die Heizeinrichtung (11 ) unten in dem Waschmaschinenbottich (30) außerhalb der Trommel (29) angeordnet ist, dadurch gekennzeichnet, dass ein Heizelement an der Außenseite des Trägers im Bereich der Vertiefung vorgesehen ist in dem Bereich entlang eines Scheitelpunkts bzw. entlang einer Scheitellinie der Vertiefung, wobei zur Dampferzeugung in der Waschmaschine (28) nur das Heizelement (17) im Bereich der Vertiefung betrieben wird.Method for operating a washing machine (28) with a heating device (11), wherein the heating device has a carrier (13) and at least one planar heating element (17, 18) arranged thereon, wherein at least one first heating element (17) flatly adjoins the Carrier (13) is applied and wherein the carrier in a central region has a longitudinal recess, wherein the washing machine (28) has a washing machine tub (30) and a drum (29) therein and wherein the heating device (11) below in the washing machine tub (30) is arranged outside the drum (29), characterized in that a heating element is provided on the outside of the carrier in the region of the depression in the region along a vertex or along a vertex line of the depression, wherein for steam generation in the washing machine ( 28) only the heating element (17) is operated in the region of the depression.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, mindestens ein Temperatursensor (20) an dem Träger (13) vorgesehen ist, wobei vorzugsweise der Temperatursensor (20) genau an der Außenseite (14) der Vertiefung am Träger (13) vorgesehen ist, wobei zur Steuerung des Heizelements (17) mittels dieses Temperatursensors (20) die Temperatur dieses Heizelements gemessen wird und davon abhängig seine Leistung geregelt wird.2. The method according to claim 1, characterized in that at least one temperature sensor (20) on the carrier (13) is provided, wherein preferably the temperature sensor (20) is provided exactly on the outer side (14) of the recess on the carrier (13) to control the heating element (17) by means of this temperature sensor (20), the temperature of this heating element is measured and dependent on its performance is regulated.
3. Verfahren nach Anspruch 2, dadurch gekennzeichnet, dass zwei Temperatursensoren (20) an der Außenseite (14) des Trägers (13) vorgesehen sind, wobei vorzugsweise ein Temperatursensor (20a) nahe an einem Ende (24) des Trägers (13) und der andere Temperatursensor (20b) nahe an dem anderen Ende im Längsverlauf parallel zur Vertiefung vorgesehen ist. 3. The method according to claim 2, characterized in that two temperature sensors (20) on the outer side (14) of the carrier (13) are provided, wherein preferably a temperature sensor (20a) close to one end (24) of the carrier (13) and the other temperature sensor (20b) is provided close to the other end in the longitudinal direction parallel to the recess.
4. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der elektrische Widerstand des Heizelements (17, 18) gemessen wird und daraus eine Temperatur des Heizelements oder des Trägers (13) bestimmt wird.4. The method according to any one of the preceding claims, characterized in that the electrical resistance of the heating element (17, 18) is measured and from a temperature of the heating element or the carrier (13) is determined.
5. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass zum Erhitzen von Wasser sämtliche Heizelemente (17, 18) der Heizeinrichtung (11 ) betrieben werden.5. The method according to any one of the preceding claims, characterized in that for heating water, all the heating elements (17, 18) of the heating device (11) are operated.
6. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Heizeinrichtung (11) nahe dem untersten Bereich des Waschmaschinenbottichs angeordnet ist.6. The method according to any one of the preceding claims, characterized in that the heating device (11) is arranged near the lowermost portion of the washing machine tub.
7. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Heizeinrichtung (11 ) derart in dem Waschmaschinenbottich (30) eingebaut ist, dass sie in ihrem Längsverlauf abfällt zum Abfließen von an oder auf der Heizeinrichtung (11 ) befindlichem Wasser, wobei vorzugsweise die Heizeinrichtung derart in der Waschmaschine (28) eingebaut ist, dass die Vertiefung nach unten weist.7. The method according to any one of the preceding claims, characterized in that the heating device (11) is installed in the washing machine tub (30) that it falls in its longitudinal course for the flow of water on or on the heater (11) befindlichem, preferably the heating device is installed in the washing machine (28) in such a way that the depression faces downwards.
8. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sich die Vertiefung über die wesentliche Länge des Trägers (13) erstreckt.8. The method according to any one of the preceding claims, characterized in that the recess extends over the substantial length of the carrier (13).
9. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Träger (13) in seinem Längsverlauf zur Bildung der Vertiefung eine Längsrinne aufweist, insbesondere eine gerundete Längsrinne, wobei er vorzugsweise insgesamt im wesentlichen gewölbt mit Rinnenform oder spatenartig ausgebildet ist. 9. The method according to any one of the preceding claims, characterized in that the carrier (13) in its longitudinal course to form the recess has a longitudinal groove, in particular a rounded longitudinal groove, wherein it is preferably formed substantially curved overall with channel shape or spade-like.
10. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Längsrichtung der Heizeinrichtung (11 ) in etwa parallel ist zu einer Drehachse der Trommel (29).10. The method according to any one of the preceding claims, characterized in that the longitudinal direction of the heating device (11) is approximately parallel to a rotational axis of the drum (29).
11. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass sich zumindest das erste Heizelement (17) im Bereich der Vertiefung über die wesentliche Länge des Trägers erstreckt.11. The method according to any one of the preceding claims, characterized in that extending at least the first heating element (17) in the region of the recess over the substantial length of the carrier.
12. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das erste Heizelement (17) im Bereich der Vertiefung vorgesehen ist und mindestens ein zweites Heizelement (18) daneben zum Seitenrand hin, wobei insbesondere zu beiden Seiten des ersten Heizelements (17) an der Vertiefung jeweils ein weiteres zweites Heizelement (18) vorgesehen ist und vorzugsweise die Heizelemente separat ansteuerbar sind.12. The method according to any one of the preceding claims, characterized in that the first heating element (17) is provided in the region of the recess and at least one second heating element (18) next to the side edge, in particular on both sides of the first heating element (17) a further second heating element (18) is provided in the recess and preferably the heating elements can be controlled separately.
13. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass eine Leitfähigkeitsmesseinrichtung an dem Träger (13) vorgesehen ist, insbesondere eine Leitfähigkeitsmesseinrichtung in Dickschichttechnik mit zwei Elektroden und einer Abdeckschicht darüber, wobei vorzugsweise die Leitfähigkeitsmesseinrichtung an der Außenseite (14) des Trägers (13) an der Vertiefung vorgesehen ist.13. The method according to any one of the preceding claims, characterized in that a conductivity measuring device on the support (13) is provided, in particular a conductivity measuring device in thick-film technology with two electrodes and a covering layer above, preferably the conductivity measuring device on the outside (14) of the carrier ( 13) is provided on the recess.
14. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Heizleistung des ersten Heizelements (17) an der Vertiefung weniger als 800 W beträgt. 14. The method according to any one of the preceding claims, characterized in that the heating power of the first heating element (17) at the recess is less than 800 W.
EP08855287A 2007-11-30 2008-11-25 Method for operating a washing machine having a heating unit Not-in-force EP2215301B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL08855287T PL2215301T3 (en) 2007-11-30 2008-11-25 Method for operating a washing machine having a heating unit
SI200830629T SI2215301T1 (en) 2007-11-30 2008-11-25 Method for operating a washing machine having a heating unit

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007058833A DE102007058833A1 (en) 2007-11-30 2007-11-30 Heating device for a washing machine, washing machine with a heating device and method for operating a heating device
PCT/EP2008/009957 WO2009068238A1 (en) 2007-11-30 2008-11-25 Method for operating a washing machine having a heating unit

Publications (2)

Publication Number Publication Date
EP2215301A1 true EP2215301A1 (en) 2010-08-11
EP2215301B1 EP2215301B1 (en) 2012-02-22

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EP08855287A Not-in-force EP2215301B1 (en) 2007-11-30 2008-11-25 Method for operating a washing machine having a heating unit

Country Status (12)

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US (1) US7941884B2 (en)
EP (1) EP2215301B1 (en)
JP (1) JP5331124B2 (en)
KR (1) KR20100111669A (en)
CN (1) CN101932765B (en)
AT (1) ATE546580T1 (en)
DE (1) DE102007058833A1 (en)
ES (1) ES2381689T3 (en)
MX (1) MX2010005894A (en)
PL (1) PL2215301T3 (en)
SI (1) SI2215301T1 (en)
WO (1) WO2009068238A1 (en)

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Also Published As

Publication number Publication date
CN101932765B (en) 2012-08-15
DE102007058833A1 (en) 2009-06-10
WO2009068238A1 (en) 2009-06-04
JP2011504774A (en) 2011-02-17
US20100263137A1 (en) 2010-10-21
KR20100111669A (en) 2010-10-15
PL2215301T3 (en) 2012-07-31
ATE546580T1 (en) 2012-03-15
CN101932765A (en) 2010-12-29
US7941884B2 (en) 2011-05-17
MX2010005894A (en) 2010-06-25
SI2215301T1 (en) 2012-06-29
EP2215301B1 (en) 2012-02-22
ES2381689T3 (en) 2012-05-30
JP5331124B2 (en) 2013-10-30

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