EP1659207B1 - Condensing-type clothes dryer - Google Patents

Condensing-type clothes dryer Download PDF

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Publication number
EP1659207B1
EP1659207B1 EP05109625A EP05109625A EP1659207B1 EP 1659207 B1 EP1659207 B1 EP 1659207B1 EP 05109625 A EP05109625 A EP 05109625A EP 05109625 A EP05109625 A EP 05109625A EP 1659207 B1 EP1659207 B1 EP 1659207B1
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EP
European Patent Office
Prior art keywords
condensate collecting
collecting container
electrodes
laundry dryer
condensate
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.)
Not-in-force
Application number
EP05109625A
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German (de)
French (fr)
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EP1659207A1 (en
Inventor
Thomas Ludenia
Guido Sattler
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BSH Hausgeraete GmbH
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BSH Bosch und Siemens Hausgeraete GmbH
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Publication of EP1659207A1 publication Critical patent/EP1659207A1/en
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/24—Condensing arrangements
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/58—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers related to condensation, e.g. condensate water level
    • 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
    • D06F2105/58—Indications or alarms to the control system or to the user
    • 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
    • D06F2105/62—Stopping or disabling machine operation
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/32—Control of operations performed in domestic laundry dryers 
    • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/50—Responding to irregular working conditions, e.g. malfunctioning of blowers

Definitions

  • the invention relates to a condensation dryer with a condensate collection container, which is designed as a drawer and is removably disposed in a receiving chamber in the upper region of the tumble dryer, and a device for monitoring a level using a switching arrangement comprising at least two electrodes arranged at different heights.
  • the invention relates to a condensation dryer comprising a laundry drum receiving the dry material, two separate systems for the cooling air and circulating process air, each with a fan and air ducts that are tightly sealed against each other, an electric heater for heating the process air and a condenser in which the process air is cooled and condenses the moisture absorbed by the dry material and a condensate collecting tray with a pump that conveys the condensed water into a condensate collection tank.
  • a similar in this kind monitoring device is in the DE 197 01 225 B4 described.
  • the sensor device is part of the leak water drainage device, via which the overflowing condensate when the condensate collector is completely filled flows back into the collecting container and causes a measurable resistance change at the electrodes.
  • the sensor device is set so that it responds only at a predefined amount of liquid effluent leak water and provides the internal control useful and evaluable information. To ensure their function, a series of coordinated measures is required in this monitoring device, which are associated with a corresponding effort.
  • the arrangement of the electrodes in the leak water discharge line is problematic with respect to the installation and the wiring. Another disadvantage is that the electrodes are difficult to access when cleaning becomes necessary.
  • the two devices described above has the common drawback that the switching arrangements are sensitive to interference and do not work with the necessary reliability in long-term operation.
  • a switching arrangement suitable for determining the height of a liquid level using a plurality of electrodes arranged one above another is disclosed in US Pat DE 40 42 257 A1 described. According to the device which can be used in geohydraulics, two electrodes each are bridged by an ohmic resistance and the change in the total resistance is detected and evaluated as a measured value when the fill level changes.
  • the invention has for its object to provide a suitable for tumble dryer for detecting the level in the condensate tank suitable device that is further improved and extended in its function to the state of the art.
  • a condensation dryer with a condensate collection container which is designed as a drawer and in a receiving chamber in the upper region of the tumble dryer is removably arranged, and a device for monitoring a level using a switching arrangement comprising at least two electrodes arranged at different heights, characterized in that the switching arrangement of the at least two electrodes arranged at different heights and at least two ohmic resistors connected in series, wherein always two spatially adjacent electrodes are bridged by an ohmic resistance, is set up to monitor the level in the condensate collection container and has a part which is an integral part of the condensate collection container.
  • the switching arrangement for monitoring the filling level in the condensate collecting tank consists essentially of at least two electrodes arranged at different heights and a resistance network, with always two spatially adjacent electrodes being bridged by an ohmic resistance.
  • a part of the switching arrangement is fixedly connected to the condensate collecting tank, preferably the condensate collecting tank is manufactured in one piece with parts of the switching arrangement.
  • the switching arrangement With the inventive switching arrangement, a presence control and level monitoring are realized.
  • the switching arrangement is less susceptible to interference, their functionality can be ensured even during long-term operation of the tumble dryer.
  • the electrodes arranged at different levels gradually submerge into the condensate.
  • the intermediate ohmic resistances are bridged, the current in the monitoring circuit increases.
  • the rising current level as a result of a change in resistance current flow is evaluated within the device and generates a level-dependent analog signal, which is displayed in a suitable manner.
  • An analog display in the display or via a series of LEDs is particularly well suited to make the information content of the operator recognizable.
  • the level is measured in several stages, depending on the number of electrodes used and the vertical distance between the electrodes. The fineness of the detectable level levels increases with the number of electrodes used. With the use of two electrodes, only the maximum level can be detected.
  • the displays provide the operator with information that is better than the state of the art, to which he can respond at his own discretion. With the use of three to four electrodes for monitoring the level, a display which is completely sufficient in terms of significance can be realized for practical operation.
  • the change in the level as a function of time is detected. From the measured data can be concluded on the progress of the drying process. It is intended to evaluate these time-dependent measurement data for controlling the drying process.
  • FIG. 1 shows in simplified and schematic form a condensate collector 4 with integrated therein switching arrangement.
  • the condensate collection container 4 is designed as a drawer and accommodated in a receiving chamber 5 in the upper region of the tumble dryer 1 for the operator easily accessible. By a simple pushing movement of the condensate collection 4 can be removed for the purpose of emptying.
  • the receiving chamber 5 for the removable condensate collection 4 has to protect against leaking water on the bottom side a drain 17 with connected line hose 18, is passed over the overflowing water back into the drip tray.
  • condensate is supplied by means of a condensate pump, not shown, from a bottom side disposed below the condenser collecting tray via a feed line to the condensate collection tank 4.
  • Condenser, drip tray and the delivery line are also not shown in the figure for the sake of simplicity.
  • the consisting of plastic condensate tank 4 has on the back of two contact poles 10, which in completely imported condensate tank 4 with corresponding Mating contact poles 13 are electrically connected in the receiving chamber 5 of the condensate collection container 4. Via the contacts 10, 13, the switching arrangement is supplied by the electronic control device 7 with a supply voltage.
  • the arrangement of the contacts 10, 13 in the rear wall of the condensate collection container 4 and in the receiving chamber 5 has the advantage that no additional measures for contact protection must be taken.
  • Electrodes 6 Emerging inside are in the rear wall of the condensate collection container 4 a plurality of superimposed electrodes 6 are provided which are electrically connected with series-connected resistors 15 so that always two electrodes 6 are bridged by an ohmic resistor 15.
  • the electrodes 6 and the resistors 15 are incorporated by the manufacturing process of the condensate collection container 4 in these.
  • the switching arrangement is operated with alternating voltage or with direct voltage in a periodic cycle.
  • the circuit is closed with proper insertion of the condensate collection container 4 via the two pairs of contacts 10, 13 and it flows when the tumble dryer 1 an alternating current, which is determined in its height by the applied voltage and the series connection of the resistors 15. This minimum flow is the signal for the presence of the condensate collection container 4 in the intended position, the clothes dryer 1 is thus ready for operation and the drying program can be started.
  • the presence of the condensate collecting container 4 and its correct positioning in the receiving chamber 5 are indicated to the operator by the light emitting diode 9 arranged at the bottom in a vertical row.
  • the electrodes 6 arranged at different levels are successively contacted.
  • the intermediate ohmic resistors 15 are bridged, the current in the monitoring circuit increases.
  • the increasing in level 12 as a result of a change in resistance in stages current flow is evaluated within the device and generates a level 12 dependent analog signal, which is displayed in a suitable manner.
  • An analog display 19 in the display 3 or via a series of LEDs 8 is particularly well suited to make the information content of the operator recognizable.
  • the light emitting diodes 9 can be switched via the internal control or are directly integrated into the switching arrangement.
  • the light emitting diodes 9 are arranged one above the other in the control panel 2 in a row in the immediate vicinity of the condensate collection container 4.
  • the functional assignment of the optical display elements 8 to the level 12 in the condensate collection container 4 results for the operator in obvious way by itself from the spatial proximity of the light emitting diodes 8 to the condensate collection container. 4
  • the controller Upon reaching a predefined maximum level 12, the controller shuts off the running drying program.
  • This circuit measure is displayed in the control panel 2 of the dryer 1 of the operator for display and / or triggers an acoustic signal.
  • the flashing lights of all LEDs 8 signals the program interruption.
  • FIG. 2 Another embodiment of the inventive monitoring device is in FIG. 2 shown. Notwithstanding the embodiment described above, only the electrodes 6 are integrated in the condensate collecting tank 4. Such a condensate collector 4 is easier to manufacture.
  • the resistor network 15 is mounted on the stationary side of the clothes dryer 1.
  • the filling level monitoring and display is carried out analogously in the mode of operation described above. Unlike in the first example flows in the circuit with the tumble dryer 1 always a minimum current. As a presence control for the condensate collection 4, the current increase, which is effected by the fact that the insertion of the condensate collection container 4, a first resistor 16 is bridged via a third additional contact 11.
  • the level 12 in the condensate collection container 4 is preferably indicated by analog optical graphics 19 on a display 3 or by a plurality of light-emitting diodes 8 and 9 arranged one above the other in the immediate vicinity of the condensate collection container 4.
  • FIG. 3 shows a control panel 2 with four light emitting diodes 8 and 9, which are arranged vertically one above the other in the control panel 2.
  • three upper light emitting diodes 8 three different water levels 12 are displayed. When completely filled condensate collecting 4 all LEDs light 8 and 9 and it will output an additional audible signal.
  • FIG. 4 shows a control panel 2 with an exemplary display.
  • the water levels 12 are shown in the form of a bar graph 19. In the example, three different levels 12 are mapped.
  • the height graduation of the bars corresponds to the constant distances of the electrodes 6 in the condensate collector 4.
  • the first two bars are filled in color, which in conjunction with the in FIG. 1 shown arrangement of the electrodes 6 means that the condensate collecting tank 4 is filled at least two-thirds.
  • the electrodes 6 may be positioned so that the first display is output at a level 12 that is near the maximum level. The ad would then be interpreted as a warning.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Window Of Vehicle (AREA)
  • Resistance Heating (AREA)
  • Inorganic Insulating Materials (AREA)

Abstract

The dryer has a device for supervising the level in a condensation collector using a switched circuit having two electrodes arranged in different locations and two resistance levels. The electrodes are bridges by resistors, and switched in series. The switched circuit supervises the level (12) of a component of the condensation collector (4). The condensation collector (4) is a plastic part, and manufactured as a one part with the circuit. The electrodes (6) are integrated in the condensate collector (4). The electrodes (6) and the resistance network (15) are integrated in the condensation collector. An independent claim is included for a method.

Description

Die Erfindung betrifft einen Kondensations-Wäschetrockner mit einem Kondensatsammelbehälter, welcher als Schublade ausgebildet und in einer Aufnahmekammer im oberen Bereich des Wäschetrockners herausnehmbar angeordnet ist, sowie einer Vorrichtung zum Überwachen eines Füllstandes unter Verwendung einer Schaltanordnung umfassend wenigstens zwei in unterschiedlicher Höhe angeordnete Elektroden.The invention relates to a condensation dryer with a condensate collection container, which is designed as a drawer and is removably disposed in a receiving chamber in the upper region of the tumble dryer, and a device for monitoring a level using a switching arrangement comprising at least two electrodes arranged at different heights.

Ein solcher Wäschetrockner geht hervor aus der DE 197 01 225 B4 .Such a dryer is apparent from the DE 197 01 225 B4 ,

Die Erfindung geht aus von einem Kondensations-Wäschetrockner enthaltend eine das Trockengut aufnehmende Wäschetrommel, zwei getrennte Systeme für die Kühlluft und für die im Kreislauf geführte Prozessluft mit je einem Gebläse und Luftführungskanälen, die gegeneinander dicht abgeschlossen sind, einen elektrischen Heizkörper zum Aufheizen der Prozessluft sowie einen Kondensator, in dem die Prozessluft abgekühlt wird und die vom Trockengut aufgenommene Feuchtigkeit kondensiert sowie eine Kondensatauffangschale mit einer Pumpe, die das kondensierte Wasser in einen Kondensatsammelbehälter befördert.The invention relates to a condensation dryer comprising a laundry drum receiving the dry material, two separate systems for the cooling air and circulating process air, each with a fan and air ducts that are tightly sealed against each other, an electric heater for heating the process air and a condenser in which the process air is cooled and condenses the moisture absorbed by the dry material and a condensate collecting tray with a pump that conveys the condensed water into a condensate collection tank.

Üblicherweise werden zur Erkennung des Füllstandes im Kondensatsammelbehälter Systeme mit Schwimmerschaltern, mit Druck- oder Gewichtsauswertung oder Systeme mit aktiver Überlauferkennung eingesetzt. Aus der DE 82 12 540 U 1 ist zur Überwachung des Füllstandes im Kondensat-Auffangbehälter eine aus einer Elektrodenanordnung bestehende Sensoreinrichtung bekannt, die über elektrische Leitungen mit der Steuerung des Wäschetrockners verbunden ist. Das Benetzen der Elektroden durch überfließendes Kondensat hat eine elektrische Widerstandsänderung zur Folge. Die daraus resultierende Spannungsänderung wird gemessen und die Messwerte der geräteinternen Steuerung zugeführt, über die eine Schaltungsmaßnahme ausgelöst wird.Usually, systems with float switches, with pressure or weight evaluation or systems with active overflow detection are used to detect the level in the condensate tank. From the DE 82 12 540 U 1 is for monitoring the level in the condensate collection container known from an electrode assembly sensor device is known, which is connected via electrical lines to the control of the clothes dryer. The wetting of the electrodes by overflowing condensate results in an electrical resistance change. The resulting voltage change is measured and the measured values are fed to the device-internal control via which a circuit measure is triggered.

Eine in dieser Art ähnliche Überwachungsvorrichtung wird in der DE 197 01 225 B4 beschrieben. Die Sensoreinrichtung ist Bestandteil der Leckwasserabführungseinrichtung, über die bei vollständig gefülltem Kondensatsammelbehälter das überlaufende Kondensat zurück in den Auffangbehälter fließt und an den Elektroden eine messtechnisch verwertbare Widerstandsänderung bewirkt. Die Sensoreinrichtung ist so eingestellt, dass diese erst bei einer vordefinierten Flüssigkeitsmenge abfließenden Leckwassers anspricht und der internen Steuerung verwert- und auswertbare Informationen liefert. Zur Sicherstellung ihrer Funktion ist bei dieser Überwachungsvorrichtung eine Reihe von aufeinander abgestimmte Maßnahmen erforderlich, die mit einem entsprechenden Aufwand verbunden sind. Die Anordnung der Elektroden in der Leckwasserabführungsleitung ist bzgl. des Einbaus und der Leitungsführung problematisch. Nachteilig ist auch, dass die Elektroden bei notwendig werdender Reinigung erschwert zugänglich sind.A similar in this kind monitoring device is in the DE 197 01 225 B4 described. The sensor device is part of the leak water drainage device, via which the overflowing condensate when the condensate collector is completely filled flows back into the collecting container and causes a measurable resistance change at the electrodes. The sensor device is set so that it responds only at a predefined amount of liquid effluent leak water and provides the internal control useful and evaluable information. To ensure their function, a series of coordinated measures is required in this monitoring device, which are associated with a corresponding effort. The arrangement of the electrodes in the leak water discharge line is problematic with respect to the installation and the wiring. Another disadvantage is that the electrodes are difficult to access when cleaning becomes necessary.

Den beiden vorbeschriebenen Vorrichtungen ist der Nachteil gemeinsam, dass die Schaltanordnungen empfindlich gegen Störungen sind und im Langzeitbetrieb nicht mit der notwendigen Zuverlässigkeit arbeiten.The two devices described above has the common drawback that the switching arrangements are sensitive to interference and do not work with the necessary reliability in long-term operation.

Eine zur Bestimmung der Höhe eines Flüssigkeitsspiegels unter Verwendung von mehreren übereinander angeordneten Elektroden geeignete Schaltanordnung ist in der DE 40 42 257 A1 beschrieben. Gemäß der in der Geohydraulik einsetzbaren Vorrichtung werden je zwei Elektroden durch einen ohmschen Widerstand überbrückt und die Änderung des Gesamtwiderstands bei Änderung des Füllstandes als Messwert erfasst und ausgewertet.A switching arrangement suitable for determining the height of a liquid level using a plurality of electrodes arranged one above another is disclosed in US Pat DE 40 42 257 A1 described. According to the device which can be used in geohydraulics, two electrodes each are bridged by an ohmic resistance and the change in the total resistance is detected and evaluated as a measured value when the fill level changes.

Aus der DE 29 33 513 A1 geht ein Wäschetrockner hervor, bei dem in einem Auffangbehälter für Kondensat, welcher aus einem Kondensatsammelgefäß überlaufendes Kondensat auffängt, ein Füllstandsgeber als Überlaufschutz angeordnet ist.From the DE 29 33 513 A1 goes out a dryer in which a filling level sensor is arranged as overflow protection in a collecting container for condensate, which collects from a condensate collecting vessel overflowing condensate.

Der Erfindung liegt die Aufgabe zugrunde, eine für Wäschetrockner zur Erfassung des Füllstandes im Kondensatsammelbehälter geeignete Vorrichtung vorzuschlagen, die zum Stand der Technik in ihrer Funktion weiter verbessert und erweitert ist.The invention has for its object to provide a suitable for tumble dryer for detecting the level in the condensate tank suitable device that is further improved and extended in its function to the state of the art.

Erfindungsgemäß gelöst wird die Aufgabenstellung durch einen Kondensations-Wäschetrockner mit einem Kondensatsammelbehälter, welcher als Schublade ausgebildet und in einer Aufnahmekammer im oberen Bereich des Wäschetrockners herausnehmbar angeordnet ist, sowie einer Vorrichtung zum Überwachen eines Füllstandes unter Verwendung einer Schaltanordnung umfassend wenigstens zwei in unterschiedlicher Höhe angeordnete Elektroden, dadurch gekennzeichnet, dass die Schaltanordnung aus den wenigstens zwei in unterschiedlicher Höhe angeordneten Elektroden und wenigstens zwei in Reihe geschalteten ohmschen Widerständen besteht, wobei immer zwei räumlich benachbarte Elektroden durch einen ohmschen Widerstand überbrückt werden, zum Überwachen des Füllstandes im Kondensatsammelbehälter eingerichtet ist und einen Teil aufweist, welcher ein fester Bestandteil des Kondensatsammelbehälters ist.According to the invention, the problem is solved by a condensation dryer with a condensate collection container, which is designed as a drawer and in a receiving chamber in the upper region of the tumble dryer is removably arranged, and a device for monitoring a level using a switching arrangement comprising at least two electrodes arranged at different heights, characterized in that the switching arrangement of the at least two electrodes arranged at different heights and at least two ohmic resistors connected in series, wherein always two spatially adjacent electrodes are bridged by an ohmic resistance, is set up to monitor the level in the condensate collection container and has a part which is an integral part of the condensate collection container.

Vorteilhafte Ausgestaltungen der Erfindung sind in den jeweils nachfolgenden Unteransprüchen angegeben.Advantageous embodiments of the invention are specified in the respective following subclaims.

Nach Maßgabe der Erfindung besteht die Schaltanordnung zum Überwachen des Füllstandes im Kondensatsammelbehälter im Wesentlichen aus wenigstens zwei in unterschiedlicher Höhe angeordneten Elektroden und einem Widerstandsnetzwerk, wobei immer zwei räumlich benachbarte Elektroden durch einen ohmschen Widerstand überbrückt werden. Ein Teil der Schaltanordnung ist mit dem Kondensatsammelbehälter fest verbunden, vorzugsweise ist der Kondensatsammelbehälter mit Teilen der Schaltanordnung einstückig gefertigt.According to the invention, the switching arrangement for monitoring the filling level in the condensate collecting tank consists essentially of at least two electrodes arranged at different heights and a resistance network, with always two spatially adjacent electrodes being bridged by an ohmic resistance. A part of the switching arrangement is fixedly connected to the condensate collecting tank, preferably the condensate collecting tank is manufactured in one piece with parts of the switching arrangement.

Mit der erfinderischen Schaltanordnung sind eine Anwesenheitskontrolle und eine Füllstandsüberwachung realisiert. Die Schaltanordnung ist wenig störanfällig, ihre Funktionstüchtigkeit kann auch beim Langzeitbetrieb des Wäschetrockners gewährleistet werden.With the inventive switching arrangement, a presence control and level monitoring are realized. The switching arrangement is less susceptible to interference, their functionality can be ensured even during long-term operation of the tumble dryer.

Bei steigendem Füllstand im Kondensatsammelbehälter tauchen nacheinander die auf unterschiedlichen Niveaustufen angeordneten Elektroden in das Kondensat ein. Durch die elektrolytische Verbindung zwischen zwei Elektroden werden die zwischengeschalteten ohmschen Widerstände überbrückt, der Strom in der Überwachungsschaltung steigt an. Der bei steigendem Füllstand infolge einer Widerstandsänderung ansteigende Stromfluss wird geräteintern ausgewertet und ein vom Füllstand abhängiges analoges Signal erzeugt, das in geeigneter Weise angezeigt wird. Eine analoge Anzeige im Display oder über eine Reihe von Leuchtdioden ist besonders gut geeignet den Informationsinhalt der Bedienperson erkennbar zu machen.As the level in the condensate collecting tank rises, the electrodes arranged at different levels gradually submerge into the condensate. By the electrolytic connection between two electrodes, the intermediate ohmic resistances are bridged, the current in the monitoring circuit increases. The rising current level as a result of a change in resistance current flow is evaluated within the device and generates a level-dependent analog signal, which is displayed in a suitable manner. An analog display in the display or via a series of LEDs is particularly well suited to make the information content of the operator recognizable.

Der Füllstand wird in mehreren Stufen gemessen, in Abhängigkeit von der Anzahl der eingesetzten Elektroden und dem vertikalen Abstand der Elektroden zueinander. Die Feinheit der detektierbaren Pegelniveaus nimmt zu mit der Anzahl der eingesetzten Elektroden. Mit dem Einsatz von zwei Elektroden ist nur der Maximalpegel detektierbar.The level is measured in several stages, depending on the number of electrodes used and the vertical distance between the electrodes. The fineness of the detectable level levels increases with the number of electrodes used. With the use of two electrodes, only the maximum level can be detected.

Erreicht der Füllstand den höchstzulässigen Wert löst dies in bekannter Weise ein zusätzliches Warnsignal aus und der Trocknungsprozess wird unterbrochen.If the level reaches the maximum permissible level, this triggers an additional warning signal in a known manner and the drying process is interrupted.

Die Anzeigen liefern der Bedienperson eine gegenüber dem Stand der Technik verbesserte Information, auf die er nach eigenem Ermessen reagieren kann. Mit dem Einsatz von drei bis vier Elektroden zur Überwachung des Füllstandes ist für den praktischen Betrieb eine in Bezug auf die Aussagekraft völlig ausreichende Anzeige realisierbar.The displays provide the operator with information that is better than the state of the art, to which he can respond at his own discretion. With the use of three to four electrodes for monitoring the level, a display which is completely sufficient in terms of significance can be realized for practical operation.

Die elektrische Verbindung zum Wäschetrockner erfolgt über Kontaktpole im Kondensatsammelbehälter, die mit Gegenpolen in der Aufnahmekammer des Kondensatsammelbehälters korrespondieren. Der elektrische Kontakt ist nur bei vollständig eingeführtem Kondensatsammelbehälter hergestellt, die Schaltanordnung ist nur bei geschlossenen Kontakten betriebsbereit. Eine entsprechende Anzeige für die Betriebsbereitschaft ist den Bedienenden zugleich ein Signal für die Anwesenheit des Kondensatsammelbehälters und dessen korrekten Einschub.The electrical connection to the tumble dryer via contact poles in the condensate collection tank, which correspond to opposite poles in the receiving chamber of the condensate collection tank. The electrical contact is made only with fully imported condensate collection, the switching device is ready for operation only with closed contacts. A corresponding display for the operational readiness is at the same time a signal to the operator for the presence of the condensate collection container and its correct insertion.

In Ausgestaltung der Erfindung wird die Änderung des Füllstands in Abhängigkeit von der Zeit erfasst. Aus den Messdaten kann auf den Fortschritt des Trocknungsprozesses geschlossen werden. Es ist vorgesehen, diese zeitabhängigen Messdaten zur Steuerung des Trocknungsvorganges auszuwerten.In an embodiment of the invention, the change in the level as a function of time is detected. From the measured data can be concluded on the progress of the drying process. It is intended to evaluate these time-dependent measurement data for controlling the drying process.

Die Erfindung soll nachstehend an zwei Ausführungsbeispielen näher erläutert werden. Die zugehörigen Zeichnungen zeigen:

Figur 1:
Kondensatsammelbehälter mit Schaltanordnung im Schnitt - Variante 1
Figur 2:
Kondensatsammelbehälter mit Schaltanordnung im Schnitt - Variante 2
Figur 3:
Frontansicht eines Wäschetrockners
Figur 4:
Bedienblende mit Display
The invention will be explained in more detail below with reference to two embodiments. The accompanying drawings show:
FIG. 1:
Condensate collecting tank with switching arrangement in section - Variant 1
FIG. 2:
Condensate collecting tank with switching arrangement in section - Variant 2
FIG. 3:
Front view of a tumble dryer
FIG. 4:
Control panel with display

Figur 1 zeigt vereinfacht und schematisiert einen Kondensatsammelbehälter 4 mit darin integrierter Schaltanordnung. Der Kondensatsammelbehälter 4 ist als Schublade ausgebildet und in einer Aufnahmekammer 5 im oberen Bereich des Wäschetrockners 1 für die Bedienperson leicht zugänglich untergebracht. Durch eine einfache Schubbewegung kann der Kondensatsammelbehälter 4 zwecks Entleerung herausgenommen werden. Die Aufnahmekammer 5 für den entnehmbaren Kondensatsammelbehälter 4 weist zur Absicherung gegen auslaufendes Wasser bodenseitig einen Abfluss 17 auf mit angeschlossenem Leitungsschlauch 18, über den überlaufendes Wasser zurück in die Auffangschale geleitet wird. FIG. 1 shows in simplified and schematic form a condensate collector 4 with integrated therein switching arrangement. The condensate collection container 4 is designed as a drawer and accommodated in a receiving chamber 5 in the upper region of the tumble dryer 1 for the operator easily accessible. By a simple pushing movement of the condensate collection 4 can be removed for the purpose of emptying. The receiving chamber 5 for the removable condensate collection 4 has to protect against leaking water on the bottom side a drain 17 with connected line hose 18, is passed over the overflowing water back into the drip tray.

Das während des Trocknungsprozesses anfallende Kondensat wird mit Hilfe einer nicht dargestellten Kondensatpumpe aus einer bodenseitig unterhalb des Kondensators angeordneten Auffangschale über eine Förderleitung dem Kondensatsammelbehälter 4 zugeführt. Kondensator, Auffangschale und die Förderleitung sind in der Figur der Einfachheit halber ebenfalls nicht dargestellt.The resulting during the drying process condensate is supplied by means of a condensate pump, not shown, from a bottom side disposed below the condenser collecting tray via a feed line to the condensate collection tank 4. Condenser, drip tray and the delivery line are also not shown in the figure for the sake of simplicity.

Der aus Kunststoff bestehende Kondensatsammelbehälter 4 weist an der Rückseite zwei Kontaktpole 10 auf, die bei vollständig eingeführtem Kondensatsammelbehälter 4 mit korrespondierenden Gegenkontaktpole 13 in der Aufnahmekammer 5 des Kondensatsammelbehälters 4 elektrisch verbunden sind. Über die Kontakte 10, 13 wird die Schaltanordnung von der elektronischen Steuereinrichtung 7 mit einer Speisespannung versorgt. Die Anordnung der Kontakte 10, 13 in der Rückwand des Kondensatsammelbehälters 4 und in der Aufnahmekammer 5 hat den Vorteil, dass keine zusätzlichen Maßnahmen für einen Berührungsschutz getroffen werden müssen.The consisting of plastic condensate tank 4 has on the back of two contact poles 10, which in completely imported condensate tank 4 with corresponding Mating contact poles 13 are electrically connected in the receiving chamber 5 of the condensate collection container 4. Via the contacts 10, 13, the switching arrangement is supplied by the electronic control device 7 with a supply voltage. The arrangement of the contacts 10, 13 in the rear wall of the condensate collection container 4 and in the receiving chamber 5 has the advantage that no additional measures for contact protection must be taken.

Nach innen austretend sind in der Rückwand des Kondensatsammelbehälters 4 mehrere übereinander angeordnete Elektroden 6 vorhanden, die mit in Reihe geschalteten Widerständen 15 derart elektrisch verbunden sind, dass immer zwei Elektroden 6 durch einen ohmschen Widerstand 15 überbrückt werden. Die Elektroden 6 und die Widerstände 15 sind durch das Herstellungsverfahren des Kondensatsammelbehälters 4 in diesen eingebunden. Um elektrolytische Effekte an den Elektroden 6, zu vermeiden, wird die Schaltanordnung mit Wechselspannung betrieben oder mit Gleichspannung in einem periodischen Zyklus.Emerging inside are in the rear wall of the condensate collection container 4 a plurality of superimposed electrodes 6 are provided which are electrically connected with series-connected resistors 15 so that always two electrodes 6 are bridged by an ohmic resistor 15. The electrodes 6 and the resistors 15 are incorporated by the manufacturing process of the condensate collection container 4 in these. In order to avoid electrolytic effects on the electrodes 6, the switching arrangement is operated with alternating voltage or with direct voltage in a periodic cycle.

Bei dem in Figur 1 dargestellten Ausführungsbeispiel ist der Stromkreis bei ordnungsgemäßem Einschub des Kondensatsammelbehälters 4 über die beiden Kontaktpaare 10, 13 geschlossen und es fließt bei eingeschaltetem Wäschetrockner 1 ein Wechselstrom, der in seiner Höhe durch die angelegte Spannung und die Reihenschaltung der Widerstände 15 bestimmt ist. Dieser Mindeststrom ist das Signal für die Anwesenheit des Kondensatsammelbehälters 4 in der vorgesehenen Position, der Wäschetrockner 1 ist damit funktionsbereit und das Trockenprogramm kann gestartet werden. Die Anwesenheit des Kondensatsammelbehälters 4 und seine korrekte Positionierung in der Aufnahmekammer 5 werden der Bedienperson durch die in einer senkrechten Reihe zu unterst angeordnete Leuchtdiode 9 angezeigt.At the in FIG. 1 illustrated embodiment, the circuit is closed with proper insertion of the condensate collection container 4 via the two pairs of contacts 10, 13 and it flows when the tumble dryer 1 an alternating current, which is determined in its height by the applied voltage and the series connection of the resistors 15. This minimum flow is the signal for the presence of the condensate collection container 4 in the intended position, the clothes dryer 1 is thus ready for operation and the drying program can be started. The presence of the condensate collecting container 4 and its correct positioning in the receiving chamber 5 are indicated to the operator by the light emitting diode 9 arranged at the bottom in a vertical row.

Bei jedem Herausziehen des Kondensatsammelbehälters 4 durch die Bedienperson, um z.B. den Behälter 4 zwischenzeitlich zu entleeren, werden die Kontakte 10, 13 in der Rückwand des Kondensatsammelbehälters 4 gelöst und das laufende Trockenprogramm unterbrochen. Das Programm wird fortgesetzt, wenn der Kondensatsammelbehälter 4 wieder eingeschoben und die Kontaktpaare 10, 13 geschlossen sind.Each time the condensate collection container 4 is pulled out by the operator, for example in order to empty the container 4 in the meantime, the contacts 10, 13 are released in the rear wall of the condensate collection container 4 and the current drying program is interrupted. The program is continued when the condensate collecting 4 inserted again and the contact pairs 10, 13 are closed.

Bei steigendem Füllstand 12 in dem Kondensatsammelbehälter 4 werden nacheinander die auf unterschiedlichen Niveaustufen angeordneten Elektroden 6 kontaktiert. Durch die elektrolytische Verbindung zwischen zwei Elektroden 6 werden die zwischengeschalteten ohmschen Widerstände 15 überbrückt, der Strom in der Überwachungsschaltung steigt an. Der bei steigendem Füllstand 12 infolge einer Widerstandsänderung in Stufen ansteigende Stromfluss wird geräteintern ausgewertet und ein vom Füllstand 12 abhängiges analoges Signal erzeugt, das in geeigneter Weise angezeigt wird. Eine analoge Anzeige 19 im Display 3 oder über eine Reihe von Leuchtdioden 8 ist besonders gut geeignet den Informationsinhalt der Bedienperson erkennbar zu machen.As the fill level 12 in the condensate collection container 4 rises, the electrodes 6 arranged at different levels are successively contacted. By the electrolytic connection between two electrodes 6, the intermediate ohmic resistors 15 are bridged, the current in the monitoring circuit increases. The increasing in level 12 as a result of a change in resistance in stages current flow is evaluated within the device and generates a level 12 dependent analog signal, which is displayed in a suitable manner. An analog display 19 in the display 3 or via a series of LEDs 8 is particularly well suited to make the information content of the operator recognizable.

Im Ausführungsbeispiel wird bei jedem Eintauchen einer Elektrode 6 in das Kondensat bei ansteigendem Pegel 12 im Kondensatsammelbehälter 4 nacheinander eine zugeordnete Leuchtdiode 9 angesteuert. Die Leuchtdioden 9 können über die interne Steuerung geschaltet werden oder sind direkt in die Schaltanordnung eingebunden. Die Leuchtdioden 9 sind im Bedienfeld 2 übereinander in einer Reihe in unmittelbarer Nähe zum Kondensatsammelbehälter 4 angeordnet. Die funktionale Zuordnung der optischen Anzeigeelemente 8 zum Füllstand 12 im Kondensatsammelbehälter 4 ergibt sich für die Bedienperson in sinnfälliger Weise von selbst aus der räumlichen Nähe der Leuchtdioden 8 zum Kondensatsammelbehälter 4.In the exemplary embodiment, each time an electrode 6 is immersed in the condensate at increasing level 12 in the condensate collecting tank 4, an associated light-emitting diode 9 is activated one after the other. The light emitting diodes 9 can be switched via the internal control or are directly integrated into the switching arrangement. The light emitting diodes 9 are arranged one above the other in the control panel 2 in a row in the immediate vicinity of the condensate collection container 4. The functional assignment of the optical display elements 8 to the level 12 in the condensate collection container 4 results for the operator in obvious way by itself from the spatial proximity of the light emitting diodes 8 to the condensate collection container. 4

Beim Erreichen eines vordefinierten höchstzulässigen Füllstandes 12 schaltet die Steuerung das laufende Trocknungsprogramm ab. Diese Schaltungsmaßnahme wird im Bedienfeld 2 des Wäschetrockners 1 der Bedienungsperson zur Anzeige gebracht und/oder löst ein akustisches Signal aus. Im Ausführungsbeispiel signalisiert das Blinkleuchten aller Leuchtdioden 8 die Programmunterbrechung.Upon reaching a predefined maximum level 12, the controller shuts off the running drying program. This circuit measure is displayed in the control panel 2 of the dryer 1 of the operator for display and / or triggers an acoustic signal. In the exemplary embodiment, the flashing lights of all LEDs 8 signals the program interruption.

Eine weitere Ausführungsform der erfinderischen Überwachungseinrichtung ist in Figur 2 dargestellt. Abweichend vom oben beschriebenen Ausführungsbeispiel sind nur die Elektroden 6 im Kondensatsammelbehälter 4 integriert. Ein solcher Kondensatsammelbehälter 4 ist leichter herzustellen. Das Widerstandsnetzwerk 15 ist auf der stationären Seite des Wäschetrockners 1 angebracht.Another embodiment of the inventive monitoring device is in FIG. 2 shown. Notwithstanding the embodiment described above, only the electrodes 6 are integrated in the condensate collecting tank 4. Such a condensate collector 4 is easier to manufacture. The resistor network 15 is mounted on the stationary side of the clothes dryer 1.

Die Füllstandsüberwachung und -anzeige erfolgt analog in der oben beschriebenen Funktionsweise. Anders als im ersten Beispiel fließt im Schaltkreis bei eingeschaltetem Wäschetrockner 1 immer ein minimaler Strom. Als Anwesenheitskontrolle für den Kondensatsammelbehälter 4 dient der Stromanstieg, der dadurch bewirkt wird, dass durch den Einschub des Kondensatsammelbehälters 4 ein erster Widerstand 16 über einen dritten zusätzlichen Kontakt 11 überbrückt wird.The filling level monitoring and display is carried out analogously in the mode of operation described above. Unlike in the first example flows in the circuit with the tumble dryer 1 always a minimum current. As a presence control for the condensate collection 4, the current increase, which is effected by the fact that the insertion of the condensate collection container 4, a first resistor 16 is bridged via a third additional contact 11.

Der Füllstand 12 im Kondensatsammelbehälter 4 wird bevorzugt angezeigt durch analoge optische Graphiken 19 auf einem Display 3 oder durch mehrere übereinander angeordnete Leuchtdioden 8 und 9 in der unmittelbaren Nähe des Kondensatsammelbehälters 4. Figur 3 zeigt eine Bedienblende 2 mit vier Leuchtdioden 8 und 9, die senkrecht übereinander im Bedienfeld 2 angeordnet sind. Die unterste Leuchtdiode 9, von den anderen räumlich etwas abgesetzt, signalisiert die korrekte Positionierung des Kondensatsammelbehälters 4 in der Aufnahme 5. Mittels der drei oberen Leuchtdioden 8 werden drei verschiedene Pegelstände 12 angezeigt. Bei vollständig gefülltem Kondensatsammelbehälter 4 leuchten alle Leuchtdioden 8 und 9 und es wird ein zusätzliches akustisches Signal ausgegeben.The level 12 in the condensate collection container 4 is preferably indicated by analog optical graphics 19 on a display 3 or by a plurality of light-emitting diodes 8 and 9 arranged one above the other in the immediate vicinity of the condensate collection container 4. FIG. 3 shows a control panel 2 with four light emitting diodes 8 and 9, which are arranged vertically one above the other in the control panel 2. The lowermost LED 9, spatially slightly offset from the others, signals the correct positioning of the condensate collection container 4 in the receptacle 5. By means of the three upper light emitting diodes 8, three different water levels 12 are displayed. When completely filled condensate collecting 4 all LEDs light 8 and 9 and it will output an additional audible signal.

Figur 4 zeigt eine Bedienblende 2 mit einer beispielhaften Displayanzeige. Die Pegelstände 12 sind in Form eines Balkendiagramms 19 dargestellt. Im Beispiel sind drei unterschiedliche Pegelstände 12 abbildbar. Die Höhenabstufung der Balken entspricht den konstanten Abständen der Elektroden 6 im Kondensatsammelbehälter 4. Die ersten zwei Balken sind farbig ausgefüllt, was in Verbindung mit der in Figur 1 dargestellten Anordnung der Elektroden 6 bedeutet, dass der Kondensatsammelbehälter 4 mindestens zu zwei Drittel gefüllt ist. FIG. 4 shows a control panel 2 with an exemplary display. The water levels 12 are shown in the form of a bar graph 19. In the example, three different levels 12 are mapped. The height graduation of the bars corresponds to the constant distances of the electrodes 6 in the condensate collector 4. The first two bars are filled in color, which in conjunction with the in FIG. 1 shown arrangement of the electrodes 6 means that the condensate collecting tank 4 is filled at least two-thirds.

Es liegt im Ermessen des Anwenders vom Ausführungsbeispiel abweichend die Elektroden 6 anders zu positionieren und die Füllstandsanzeige dem entsprechend inhaltlich anders zu unterlegen. Bspw. können die Elektroden 6 so positioniert werden, dass die erste Anzeige ausgegeben wird bei einem Füllstand 12, der nahe dem Höchstand liegt. Die Anzeige wäre dann als Vorwarnung zu deuten.It is at the discretion of the user of the embodiment deviating to position the electrodes 6 differently and the fill level indicator to substantiate the content accordingly differently. For example. For example, the electrodes 6 may be positioned so that the first display is output at a level 12 that is near the maximum level. The ad would then be interpreted as a warning.

Bezugszeichenreference numeral

1.1.
Wäschetrocknerclothes dryer
2.Second
Bedienblendecontrol panel
3.Third
Displaydisplay
4.4th
Kondensatsammelbehältercondensate tank
5.5th
Aufnahmekammer für den KondensatsammelbehälterStorage chamber for the condensate collector
6.6th
Elektrodenelectrodes
7.7th
Auswertesystemevaluation system
8.8th.
obere Leuchtdiodenupper LEDs
9.9th
unterste Leuchtdiodelowest LED
10.10th
KontaktpoleContact Pole
11.11th
zusätzlicher Kontaktpoladditional contact pole
12.12th
Füllstandlevel
13.13th
Gegenpoleopposites
14.14th
Gegenpolantithesis
15.15th
Widerständeresistors
16.16th
erster Widerstandfirst resistance
17.17th
Abflussoutflow
18.18th
Leitungsschlauchline hose
19.19th
Balkendiagrammbar graph

Claims (10)

  1. Condensation laundry dryer (1) with a condensate collecting container (4), which is constructed as a drawer (4) and is arranged in a receiving chamber (5) in the upper region of the laundry dryer (1) to be removable, as well as a device (6, 7, 10 to 16) for monitoring a filling state with use of a switching arrangement (6, 10 to 16) comprising at least two electrodes (6) arranged at different heights, characterised in that the switching arrangement (6, 10 to 16) consists of the at least two electrodes (6) arranged at different heights and a resistance network comprising at least two resistive impedances (15, 16) connected in series, wherein two physically adjacent electrodes (6) are always bridged over by a resistive impedance (15, 16), the switching arrangement being equipped for monitoring the filling state (12) in the condensate collecting container (4) and having a part (6, 10, 11, 15) which comprises at least the electrodes (6) and which is a fixed component of the condensate collecting container (4).
  2. Condensation laundry dryer (1) according to claim 1, characterised in that the condensate collecting container (4) is a plastics material part and that the condensate collecting container (4) is constructed integrally with parts of the switching arrangement (6, 15) for monitoring the filling state (12).
  3. Condensation laundry dryer (1) according to claim 1, characterised in that the electrodes (6) are integrated in the condensate collecting chamber (4).
  4. Condensation laundry dryer (1) according to claim 1, characterised in that the electrodes (6) and the resistance network (15) are integrated in the condensate collecting container (4).
  5. Condensation laundry dryer (1) according to claim, characterised in that the condensate collecting container (4) comprises electrical contact poles (10) which correspond with counter-poles (13) in the receiving chamber (5) of the condensate collecting container (4), wherein the electrical connection of the contacts (10, 13) in the condensate collecting container (4) is produced by those in the receiving chamber (5) only when the condensate collecting chamber (4) is fully pushed in.
  6. Condensation laundry dryer (1) according to claim 3 and 5, characterised in that two contact poles (10) are integrated in the condensate collecting chamber (4).
  7. Condensation laundry dryer (1) according to claim 4 and 5, characterised in that three contact poles (10) and an additional contact pole (11) are integrated in the condensate collecting container (4), wherein a first contact pole (10) and the additional contact pole (11) are bridged over at low resistance.
  8. Condensation laundry dryer (1) according to at least one of the preceding claims, characterised in that several light-emitting diodes (8, 9), which are advantageously disposed perpendicularly one above the other and near the condensate collecting container (4), are arranged in the control panel (2) of the laundry dryer (1) for the filling state indication (12).
  9. Condensation laundry dryer (1) according to claim 8, characterised in that the switching arrangement for monitoring the filling state (12) in the condensate collecting container (4) is so connected with the light-emitting diodes (8) in the control panel (2) that these light up in succession depending on the rise in the filling state (12) in the condensate collecting container (4).
  10. Condensation laundry dryer (1) according to any one of the preceding claims, characterised in that the switching arrangement for monitoring the filling state (12) in the condensate collecting container (4) is connected with an intelligent evaluating system (7) which generates control and/or user signals depending on the filling state (12).
EP05109625A 2004-11-19 2005-10-17 Condensing-type clothes dryer Not-in-force EP1659207B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004055941.4A DE102004055941B4 (en) 2004-11-19 2004-11-19 Condensation Dryer

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EP1659207A1 EP1659207A1 (en) 2006-05-24
EP1659207B1 true EP1659207B1 (en) 2011-01-12

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AT (1) ATE495299T1 (en)
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EP1900868B1 (en) * 2006-09-18 2011-02-23 Electrolux Home Products Corporation N.V. Condenser laundry dryer with sensed drawer
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DE102008048345B4 (en) * 2008-09-22 2011-06-16 Miele & Cie. Kg Condensing tumble dryer with condensate collection tank
DE102010039552A1 (en) * 2010-08-20 2012-02-23 BSH Bosch und Siemens Hausgeräte GmbH Laundry treatment device with sieve holder and method for operating a laundry treatment device with a lint filter
KR101887454B1 (en) 2012-01-11 2018-08-10 엘지전자 주식회사 A detecting device for insertion of a filter and a clothes drying machine thereof
EP2666903A1 (en) * 2012-05-23 2013-11-27 Electrolux Home Products Corporation N.V. Laundry dryer and condensate tank
DE102013225534A1 (en) * 2013-12-11 2015-06-25 BSH Hausgeräte GmbH Monitoring device for a liquid collecting container
DE102014204298A1 (en) * 2014-03-10 2015-09-10 BSH Hausgeräte GmbH Dryer with flushing device and lint depot and method for its operation
WO2016019988A1 (en) * 2014-08-06 2016-02-11 Arcelik Anonim Sirketi Laundry dryer having an improved condensate storage assembly
KR102369584B1 (en) 2014-12-19 2022-03-03 엘지전자 주식회사 Apparatus for treating clothes
EP3301217A1 (en) * 2016-10-03 2018-04-04 Whirlpool Corporation Method for determining the amount of water in a container for clothes dryer, process for drying clothes in a clothes dryer and clothes dryer implementing these method and process
DE102020102261A1 (en) * 2020-01-30 2021-08-05 Miele & Cie. Kg Detergent container for a cleaning device, contacting device, method and device for operating a cleaning device and cleaning device
DE102020114635A1 (en) 2020-06-02 2021-12-02 Vega Grieshaber Kg Field device with display means for the optical display of limit values and processes
KR20220063494A (en) * 2020-11-10 2022-05-17 삼성전자주식회사 Dehumidifier
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ATE495299T1 (en) 2011-01-15
DE102004055941A1 (en) 2006-05-24
EP1659207A1 (en) 2006-05-24
DE102004055941B4 (en) 2017-05-11
DE502005010833D1 (en) 2011-02-24

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