EP2496756A1 - Lint filter for a domestic dryer and method for cleaning a lint filter - Google Patents

Lint filter for a domestic dryer and method for cleaning a lint filter

Info

Publication number
EP2496756A1
EP2496756A1 EP10776635A EP10776635A EP2496756A1 EP 2496756 A1 EP2496756 A1 EP 2496756A1 EP 10776635 A EP10776635 A EP 10776635A EP 10776635 A EP10776635 A EP 10776635A EP 2496756 A1 EP2496756 A1 EP 2496756A1
Authority
EP
European Patent Office
Prior art keywords
filter
lint
brush
lint filter
process air
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
EP10776635A
Other languages
German (de)
French (fr)
Other versions
EP2496756B1 (en
Inventor
Thomas Matte
Alex Volk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Priority to PL10776635T priority Critical patent/PL2496756T3/en
Publication of EP2496756A1 publication Critical patent/EP2496756A1/en
Application granted granted Critical
Publication of EP2496756B1 publication Critical patent/EP2496756B1/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
    • D06F58/00—Domestic laundry dryers
    • D06F58/20—General details of domestic laundry dryers 
    • D06F58/22—Lint collecting arrangements

Definitions

  • the invention relates to a lint filter for a laundry drying apparatus and a method for cleaning a lint filter.
  • a lint filter is typically used in a process air duct to retain fibers and other finely divided particles, collectively referred to as fluff, entrained by a laundry in a drying process so that they do not contain any functional units, such as blowers, in the process air duct, Pumps, heating, heat exchangers, waterways, airways etc. can contaminate or even clog.
  • a lint filter has so far been a flat lint filter made of material, in particular plastic gauze, small-pored foil or fine mesh.
  • the lint filter In order to remove the lint adhering to the lint filter, the lint filter is usually removable and can be cleaned after removal by a user.
  • a lint filter is known from WO 2007/057264 A1, an odor filter, e.g. with activated carbon, is present.
  • a disadvantage of the conventional lint filters is that while fluff can be effectively retained, hair may not be.
  • the gauze is so far designed so that a free passage area of about 36% to 45% of the total area and a mesh size of 100 ⁇ to 200 ⁇ is guaranteed, otherwise the lint filter clogs too fast and its air resistance to passing through process air too high becomes. Finer gauze with a mesh size of less than 150 ⁇ tends to clog quickly during a drying process. This means, however, that hair in the process air, which have an average diameter between 40 ⁇ and 120 ⁇ (a mean diameter of hair is about 80 ⁇ ), pass through this gauze and in the downstream air ducts and components such as heating, heat exchangers , Blowers, etc. can arrive.
  • EP 2 072 660 A1 discloses a laundry drying apparatus having a lint filter connected upstream of a heat exchanger, which lint can be cleaned of lint by means of a corresponding purging device and makes the conventional manual removal of lint from the lint filter unnecessary following a drying process.
  • hair can be taken up by the liquid and transported by the latter into the liquid guidance system, where it causes problems in the usually very simply constructed pump; For example, it can lead to blockages through hair bundles. Also, hair can wrap around a drive shaft of a blower and block this blower. Furthermore, hair in the process air duct is difficult to remove.
  • a lint filter for a laundry dryer wherein the lint filter has at least one brush filter.
  • the brush filter that is a filter with a brush attachment, is far more effective than the previous lint filters in it,
  • the brush filter can in particular for
  • the brush filter has a roller-like shape. So it can cover a wide process air duct, as it is often present in a lint filter.
  • the brush filter has a bottle brush attachment. Such a trimming has proved to be a particularly good one
  • the type of bottle brushing is e.g. household brushes for cleaning bottles, etc. known.
  • the lint filter has a lint filter and the brush filter is arranged in the flow direction behind the lint filter.
  • the brush filter is not contaminated by lint.
  • the lint filter has a lint filter and the brush filter is arranged in the flow direction in front of the lint filter. In this way, while the brush filter is exposed to lint, it effectively keeps hair away from the lint filter.
  • the lint filter has a lint comb.
  • the lint comb may be removable from the lint filter. However, it is preferred that the lint comb be firmly attached to the lint filter so that it can not be lost.
  • the lint comb has a hole with attached to its inner edge tines and that the brush filter is movable for its purification by the lint line.
  • a uniform and rapid cleaning of the brush filter is made possible, in particular with an elongate, e.g. cylindrical, brush filter.
  • the lint comb represents a support member for the brush filter. This means that the lint comb holds the brush filter in a normal operation. By this dual function components can be saved, and the brush filter can be easily pulled through the lint comb for cleaning.
  • the lint comb is made of a flexible material, in particular plastic. This facilitates
  • the object is also achieved by a laundry dryer with a process air duct, wherein in the process air duct a lint filter is provided as described above.
  • the laundry dryer is a washer-dryer.
  • the laundry dryer is a washer-dryer.
  • Laundry drying machine e.g. also be a tumble dryer.
  • the process air duct is a recirculating air duct. It is still a preferred embodiment of the laundry dryer that the clothes dryer is a condensation clothes dryer.
  • Laundry drying device can be equipped for example with a heat pump.
  • the object is also achieved by a method for cleaning a lint filter, in particular as just described with associated preferred embodiments, wherein the method has at least the following steps:
  • the lint filter may in particular be a lint filter as described above. It is a preferred embodiment of the invention that the brush filter a
  • roller-like shape and the lint comb has a ring-like shape, e.g. by means of a circular hole. This allows a particularly fast and thorough cleaning.
  • FIG. 1 shows a sectional side view of a clothes dryer with a filter inserted into a process air duct
  • Fig. 2 shows the filter in a front view
  • Fig. 3 shows the filter in front view with a partially removed filter brush
  • Figure 4 shows the completely removed filter brush with an associated comb.
  • 1 shows a sectional side view of a clothes dryer W with a filter 4 inserted through a bearing plate 2 into a corresponding receiving space 3.
  • the receiving space 3 is part of a process air channel K.
  • the filter 4 which thus represents a process air filter, traverses the process air channel K. whose process air flow is indicated by the hatched arrows, substantially over the entire surface.
  • the filter can be removed with the door open D for cleaning from the bearing plate 2.
  • the process air P flows in an operation of the clothes dryer W in a generally known manner from a laundry drying room R, which is here designed by a rotatable laundry drum T, to the filter 4.
  • the process air P is after passing over laundry located in the laundry drum T and wet contains lint and, to a small extent, hair.
  • the process air P then flows through a strip-shaped upper edge 5 of the filter 4, which is provided for this purpose with passage openings 15.
  • the process air continues to flow through at least one lint filter 7 held in a frame 6, from which most, in particular coarser, fluff are retained in the process air P.
  • the process air P which is now significantly reduced in the content of lint, continues to flow to a heat sink S, at which the process air P can condense.
  • the now dried process air passes through a heater and a blower (not shown) and is blown back into the laundry drum T as dry-warm process air.
  • a pivotable protective frame 9 is arranged at a lower edge 8 of the frame 6, which as shown at the upper edge 5 pivotable and releasably attachable there, eg through a snap connection.
  • the inclination of the equipped with the lint filter 7 frame 6 with respect to the incoming process air P reduces air resistance to the process air P.
  • the filter 4 now also has a filter brush 10, which is supported on two externally mounted between the upper edge 5 and the frame 6 support members 1 1 for the brush filter 10.
  • the support elements 1 1 each have a circular hole 12 for terminal use of the brush filter 10.
  • the frame 6, the upper edge 5, the protective frame 9 and the support members 1 1 may be made in one piece from plastic, e.g. by means of an injection molding process.
  • the protective frame 9 is shown here in sections in a folded-down position.
  • the frame 6 has a U-shaped outer strut 13 and a vertical center strut 14, which are completed on the upper side of the upper edge 5. Through the middle strut 14, a rigidity of the filter 4 is improved, and two subspaces for receiving a respective lint filter or a two-part lint filter 7 are provided.
  • the filter 4 is typically gripped at its upper edge 5.
  • the upper edge 5 typically closes the opening of the receiving space 3 in the bearing plate 2.
  • a further lint filter 7 may be provided, whereby the filter 4 receives the shape of a symmetrical V, wherein both lint screens 7 are equally flowed through by the process air P.
  • the brush filter 10 covers from below the existing in the upper edge 5 slot-shaped passage openings 15 and is thus flowed through by the process air P. This means that the process air P first flows from the laundry drum T through the passage openings 15 and onwards through the brush filter 10, in which the hair is effectively retained, but lint or only to a small extent. The brush filter 10 is therefore not added by lint. Due to the comparatively coarse structure of the brush filter 10 is hardly on this
  • the brush filter 10 has a roller-like shape and a
  • FIG. 3 shows the filter 4 with the partially removed brush filter 10.
  • the brush filter 10 is pulled to its removal by one of the support members 1 1, namely here the right of the support members 1 1.
  • the support members 1 1 additionally serve each as a comb or brush comb, so that when pulling out the brush filter 10 of this is cleaned of hair.
  • the hair which has been previously filtered from the process air P, remain in the support member / comb 1 1 and can be easily removed from there. Possibly. This combing process can be repeated several times.
  • the support member or the comb 1 1 is made of a flexible plastic and has at its inner edge circumferentially arranged tines 15 on.
  • the tines 15 are slightly bevelled in the direction of the frame of the filter 4 and thus in the direction of the brush filter used 10.
  • the tines 15 are bent when pulling out of the brush filter 10 to the inside and are thus bent into the brush filter 10 for a particularly thorough combing action.
  • the hairs H remain between the prongs 15 and can be easily removed by hand.
  • the brush filter 10 has a roller-like basic shape with an elongate, optionally flexible stem 16 and a bottle brush attachment 17 attached thereto, e.g. similar to a household bottle brush.
  • the filter brush 10 may also be arranged behind the conventional lint filter 7. This will remove the lint and then the hair from the process air stream first.
  • the filter 4 may be disposed at a different location in the tumble dryer, eg in a door.
  • the clothes dryer may generally be a tumble dryer or a washer dryer.

Abstract

The lint filter (4) according to the invention comprises at least one brush filter (10). The method serves for cleaning a lint filter (4) and comprises at least the following step: drawing a brush filter (10) through a lint comb (11) that has internal teeth (15) and is mounted on the lint filter (4).

Description

Flusenfilter für ein Wäschetrocknungsgerät und Verfahren zum  Lint filter for a clothes dryer and method for
Reinigen eines Flusenfilters  Cleaning a lint filter
Die Erfindung betrifft einen Flusenfilter für ein Wäschetrocknungsgerät und ein Verfahren zum Reinigen eines Flusenfilters. The invention relates to a lint filter for a laundry drying apparatus and a method for cleaning a lint filter.
In einem Wäschetrocknungsgerät, z.B. Waschtrockner und Wäschetrockner, ist in einen Prozessluftkanal typischerweise ein Flusenfilter eingesetzt, um von einer Wäsche bzw. Textilien bei einem Trocknungsprozess mitgenommene Fasern und andere feinteilige Partikel, zusammenfassend als wie Flusen bezeichnet, zurückzuhalten, damit diese keine ebenfalls in dem Prozessluftkanal befindlichen Funktionseinheiten wie Gebläse, Pumpen, Heizung, Wärmetauscher, Wasserwege, Luftwege usw. verunreinigen oder sogar verstopfen können. Dazu weist ein Flusenfilter bisher ein flächiges Flusensieb aus Stoff, insbesondere Kunststoffgaze, kleinporiger Folie oder feinem Gitter auf. Zum Entfernen der an dem Flusensieb anhaftenden Flusen ist das Flusensieb zumeist entnehmbar und kann nach einer Entnahme von einem Benutzer gereinigt werden. Ein solches Flusenfilter ist aus der WO 2007/057264 A1 bekannt, wobei dort zusätzlich ein Geruchsfilter, z.B. mit Aktivkohle, vorhanden ist. In a clothes dryer, e.g. Washer-dryer and tumble dryer, a lint filter is typically used in a process air duct to retain fibers and other finely divided particles, collectively referred to as fluff, entrained by a laundry in a drying process so that they do not contain any functional units, such as blowers, in the process air duct, Pumps, heating, heat exchangers, waterways, airways etc. can contaminate or even clog. For this purpose, a lint filter has so far been a flat lint filter made of material, in particular plastic gauze, small-pored foil or fine mesh. In order to remove the lint adhering to the lint filter, the lint filter is usually removable and can be cleaned after removal by a user. Such a lint filter is known from WO 2007/057264 A1, an odor filter, e.g. with activated carbon, is present.
Nachteilig bei den herkömmlichen Flusenfiltern ist, dass zwar Flusen effektiv zurückgehalten werden, Haare unter Umständen jedoch nicht. Die Gaze wird bisher so ausgelegt, dass eine freie Durchtrittsfläche von ca. 36 % bis 45% der gesamten Fläche und eine Maschenweite von 100 μηη bis 200 μηη gewährleistet ist, da sich ansonsten das Flusensieb zu schnell zusetzt und sein Luftwiderstand gegenüber durchtretender Prozessluft zu hoch wird. Feinere Gaze mit einer Maschenweite von weniger als 150 μηη neigt zu einem schnellen Zusetzen während eines Trocknungsprozesses. Das bedeutet jedoch, dass Haare in der Prozessluft, die durchschnittlich einen Durchmesser zwischen 40 μηη und 120 μηη aufweisen (ein mittlerer Durchmesser von Haaren liegt bei ca. 80 μηη), durch diese Gaze durchtreten und in die nachgelagerten Luftkanäle und Bauteile wie Heizung, Wärmetauscher, Gebläse usw. gelangen können. A disadvantage of the conventional lint filters is that while fluff can be effectively retained, hair may not be. The gauze is so far designed so that a free passage area of about 36% to 45% of the total area and a mesh size of 100 μηη to 200 μηη is guaranteed, otherwise the lint filter clogs too fast and its air resistance to passing through process air too high becomes. Finer gauze with a mesh size of less than 150 μηη tends to clog quickly during a drying process. This means, however, that hair in the process air, which have an average diameter between 40 μηη and 120 μηη (a mean diameter of hair is about 80 μηη), pass through this gauze and in the downstream air ducts and components such as heating, heat exchangers , Blowers, etc. can arrive.
Aus den Dokumenten WO 2008/1 1961 1 A1 , WO 2009/050003 A1 , WO 2009/050004 A1 und WO 2009/077291 A1 geht ein Wäschetrocknungsgerät hervor, welches einen mit Flusen belasteten Wärmetauscher aufweist, der durch eine spezielle Spüleinrichtung mittels einer Flüssigkeit von Flusen gereinigt wird. Aus der EP 2 072 660 A1 geht ein Wäschetrocknungsgerät mit einem einem Wärmetauscher vorgeschalteten Flusenfilter hervor, welcher mittels einer entsprechenden Spüleinrichtung von Flusen gereinigt werden kann und das herkömmliche manuelle Entfernen von Flusen von dem Flusenfilter im Anschluss an einen Trocknungsprozess überflüssig macht. In einem Wäschetrocknungsgerät solcher Art, in dem eine Komponente im Luftweg der Prozessluft mit Flüssigkeit gespült wird, können Haare von der Flüssigkeit aufgenommen und von dieser in das Flüssigkeitsführungssystem hinein transportiert werden und dort Probleme in der meist sehr einfach aufgebauten Pumpe hervorrufen; es kann z.B. zu Verstopfungen durch Haarbündel kommen. Auch können Haare sich um eine Antriebswelle eines Gebläses wickeln und dieses Gebläse blockieren. Ferner lassen sich Haare in dem Prozessluftkanal nur schwierig entfernen. From the documents WO 2008/1 1961 1 A1, WO 2009/050003 A1, WO 2009/050004 A1 and WO 2009/077291 A1, a laundry drying apparatus emerges, which has a Lint-loaded heat exchanger which is cleaned by a special rinsing means by means of a liquid of lint. EP 2 072 660 A1 discloses a laundry drying apparatus having a lint filter connected upstream of a heat exchanger, which lint can be cleaned of lint by means of a corresponding purging device and makes the conventional manual removal of lint from the lint filter unnecessary following a drying process. In a laundry drying apparatus of this type, in which a component in the air path of the process air is rinsed with liquid, hair can be taken up by the liquid and transported by the latter into the liquid guidance system, where it causes problems in the usually very simply constructed pump; For example, it can lead to blockages through hair bundles. Also, hair can wrap around a drive shaft of a blower and block this blower. Furthermore, hair in the process air duct is difficult to remove.
Es ist eine Aufgabe der vorliegenden Erfindung, die oben genannten Nachteile zu vermeiden und insbesondere eine Möglichkeit zur effektiven Rückhaltung von Haaren in einem Prozessluftkanal eines Wäschetrocknungsgeräts ohne einen erhöhten Druckverlust bereitzustellen. It is an object of the present invention to obviate the above drawbacks, and more particularly to provide a means for effectively retaining hair in a process air duct of a clothes drying machine without an increased pressure loss.
Diese Aufgabe wird gemäß den Merkmalen der unabhängigen Patentansprüche gelöst. Bevorzugte Ausführungsformen sind insbesondere den abhängigen Patentansprüchen entnehmbar. This object is achieved according to the features of the independent claims. Preferred embodiments are in particular the dependent claims.
Die Aufgabe wird demnach gelöst durch ein Flusenfilter für ein Wäschetrocknungsgerät, wobei der Flusenfilter mindestens einen Bürstenfilter aufweist. Der Bürstenfilter, also ein Filter mit einem Bürstenbesatz, ist weit effektiver als die bisherigen Flusensiebe darin,The object is therefore achieved by a lint filter for a laundry dryer, wherein the lint filter has at least one brush filter. The brush filter, that is a filter with a brush attachment, is far more effective than the previous lint filters in it,
Haare zurückzuhalten. Eine Verwendung mindestens eines solchen Bürstenfilters befähigt somit den Flusenfilter, auch Haare zurückzuhalten. Der Bürstenfilter liegt bei To hold back hair. Use of at least one such brush filter thus enables the lint filter to retain hair as well. The brush filter is included
eingesetztem Flusenfilter in dem Prozessluftkanal, so dass die Prozessluft durch den Bürstenfilter hindurch strömen muss. Der Bürstenfilter kann insbesondere zur inserted lint filter in the process air duct, so that the process air must flow through the brush filter. The brush filter can in particular for
Verwendung in einem Prozessluftkanal des Wäschetrocknungsgeräts vorgesehen sein. Es ist eine bevorzugte Ausgestaltung der Erfindung, dass der Bürstenfilter eine walzenartige Form aufweist. So kann er einen breiten Prozessluftkanal abdecken, wie er häufig in einem Flusenfilter vorliegt. Use be provided in a process air duct of the laundry dryer. It is a preferred embodiment of the invention that the brush filter has a roller-like shape. So it can cover a wide process air duct, as it is often present in a lint filter.
Es ist eine weitere bevorzugte Ausgestaltung der Erfindung, dass der Bürstenfilter einen Flaschenbürstenbesatz aufweist. Ein solcher Besatz hat sich als ein besonders guterIt is a further preferred embodiment of the invention that the brush filter has a bottle brush attachment. Such a trimming has proved to be a particularly good one
Kompromiss zwischen einer Filtereffektivität, einem geringen Luftwiderstand, einer guten Reinigbarkeit und einer hohen Widerstandsfähigkeit in dem Prozessluftstrom ergeben. Die Art des Flaschenbürstenbesatzes ist z.B. von Haushaltsbürsten zur Reinigung von Flaschen usw. bekannt. Compromise between filter efficiency, low air resistance, good cleanability and high resistance in the process air stream. The type of bottle brushing is e.g. household brushes for cleaning bottles, etc. known.
Es ist noch eine bevorzugte Ausgestaltung der Erfindung, dass der Flusenfilter ein Flusensieb aufweist und der Bürstenfilter in Strömungsrichtung hinter dem Flusensieb angeordnet ist. Dadurch wird der Bürstenfilter nicht durch Flusen verunreinigt. Jedoch ist auch eine Ausgestaltung möglich, dass der Flusenfilter ein Flusensieb aufweist und der Bürstenfilter in Strömungsrichtung vor dem Flusensieb angeordnet ist. Auf diese Weise ist der Bürstenfilter zwar den Flusen ausgesetzt, er hält aber Haare effektiv vom Flusenfilter fern. It is still a preferred embodiment of the invention that the lint filter has a lint filter and the brush filter is arranged in the flow direction behind the lint filter. As a result, the brush filter is not contaminated by lint. However, an embodiment is also possible that the lint filter has a lint filter and the brush filter is arranged in the flow direction in front of the lint filter. In this way, while the brush filter is exposed to lint, it effectively keeps hair away from the lint filter.
Es ist ferner eine bevorzugte Ausgestaltung der Erfindung, dass der Flusenfilter einen Flusenkamm aufweist. Mittels des Flusenkamms kann ein Benutzer des It is also a preferred embodiment of the invention that the lint filter has a lint comb. By means of the lint comb, a user of the
Wäschetrocknungsgeräts den Bürstenfilter bei Bedarf gründlich reinigen. Der  If necessary, thoroughly clean the brush filter if necessary. Of the
Flusenkamm kann von dem Flusenfilter abnehmbar sein. Es wird jedoch bevorzugt, dass der Flusenkamm fest an dem Flusenfilter angebracht ist, so dass er nicht verloren gehen kann. The lint comb may be removable from the lint filter. However, it is preferred that the lint comb be firmly attached to the lint filter so that it can not be lost.
Es ist außerdem eine bevorzugte Ausgestaltung der Erfindung, dass der Flusenkamm ein Loch mit an seinem Innenrand angebrachten Zinken aufweist und dass der Bürstenfilter zu seiner Reinigung durch den Flusenkamm bewegbar ist. So wird eine gleichmäßige und schnelle Reinigung des Bürstenfilters ermöglicht, insbesondere bei einem länglichen, z.B. walzenförmigen, Bürstenfilter. It is also a preferred embodiment of the invention that the lint comb has a hole with attached to its inner edge tines and that the brush filter is movable for its purification by the lint line. Thus, a uniform and rapid cleaning of the brush filter is made possible, in particular with an elongate, e.g. cylindrical, brush filter.
Es ist zudem eine bevorzugte Ausgestaltung der Erfindung, dass der Flusenkamm ein Halterungselement für den Bürstenfilter darstellt. Dies bedeutet, dass der Flusenkamm den Bürstenfilter bei einem normalen Betrieb haltert. Durch diese Doppelfunktion können Bauelemente eingespart werden, und der Bürstenfilter kann zum Reinigen einfach durch den Flusenkamm gezogen werden. It is also a preferred embodiment of the invention that the lint comb represents a support member for the brush filter. This means that the lint comb holds the brush filter in a normal operation. By this dual function components can be saved, and the brush filter can be easily pulled through the lint comb for cleaning.
Es ist noch eine bevorzugte Ausgestaltung der Erfindung, dass der Flusenkamm aus einem flexiblen Material, insbesondere Kunststoff, besteht. Dies erleichtert ein It is still a preferred embodiment of the invention that the lint comb is made of a flexible material, in particular plastic. This facilitates
Hindurchziehen des Bürstenfilters und verhindert eine Beschädigung des Bürstenfilters und/oder des Flusenkamms.  Pulling through the brush filter and prevents damage to the brush filter and / or the lint comb.
Die Aufgabe wird erfindungsgemäß auch gelöst durch ein Wäschetrocknungsgerät mit einem Prozessluftkanal, wobei in dem Prozessluftkanal ein Flusenfilter wie oben beschrieben vorgesehen ist. The object is also achieved by a laundry dryer with a process air duct, wherein in the process air duct a lint filter is provided as described above.
Es ist ferner eine bevorzugte Ausgestaltung des Wäschetrocknungsgeräts, dass das Wäschetrocknungsgerät ein Waschtrockner ist. Alternativ kann das It is also a preferred embodiment of the laundry dryer that the laundry dryer is a washer-dryer. Alternatively, the
Wäschetrocknungsgerät z.B. auch ein Wäschetrockner sein. Laundry drying machine e.g. also be a tumble dryer.
Es ist ferner eine bevorzugte Ausgestaltung des Wäschetrocknungsgeräts, dass Prozessluftkanal ein Umluftkanal ist. Es ist noch eine bevorzugte Ausgestaltung des Wäschetrocknungsgeräts, dass das Wäschetrocknungsgerät ein Kondensationswäschetrocknungsgerät ist. Das It is also a preferred embodiment of the laundry drying apparatus that the process air duct is a recirculating air duct. It is still a preferred embodiment of the laundry dryer that the clothes dryer is a condensation clothes dryer. The
Wäschetrocknungsgerät kann dazu beispielsweise mit einer Wärmepumpe ausgerüstet sein. Die Aufgabe wird erfindungsgemäß auch gelöst durch ein Verfahren zum Reinigen eines Flusenfilters, insbesondere wie soeben mit zugehörigen bevorzugten Ausgestaltungen beschrieben, wobei das Verfahren mindestens die folgenden Schritte aufweist: Laundry drying device can be equipped for example with a heat pump. The object is also achieved by a method for cleaning a lint filter, in particular as just described with associated preferred embodiments, wherein the method has at least the following steps:
Hindurchziehen eines Bürstenfilters durch einen an dem Flusenfilter angebrachten Flusenkamm mit innenliegenden Zinken. Dadurch wird eine gleichmäßige und schnelle Reinigung des Bürstenfilters ermöglicht. Passing a brush filter through a lint attached to the lint filter with internal tines. This allows a uniform and fast cleaning of the brush filter.
Der Flusenfilter kann insbesondere ein Flusenfilter wie oben beschrieben sein. Es ist eine bevorzugte Ausgestaltung der Erfindung, dass der Bürstenfilter eine The lint filter may in particular be a lint filter as described above. It is a preferred embodiment of the invention that the brush filter a
walzenartige Form und der Flusenkamm eine ringartige Form aufweist, z.B. mittels eines kreisförmigen Lochs. Dies ermöglicht eine besonders schnelle und gründliche Reinigung. roller-like shape and the lint comb has a ring-like shape, e.g. by means of a circular hole. This allows a particularly fast and thorough cleaning.
In den Figuren der beigefügten Zeichnung ist die Erfindung anhand eines Ausführungsbeispiels schematisch dargestellt; dieses Ausführungsbeispiel wir nachfolgend genauer beschrieben. Dabei können zur Übersichtlichkeit gleiche oder gleichwirkende Elemente mit gleichen Bezugszeichen versehen sein. In the figures of the accompanying drawings, the invention is illustrated schematically with reference to an embodiment; This embodiment will be described in more detail below. In this case, the same or equivalent elements may be provided with the same reference numerals for clarity.
Fig.1 zeigt als Schnittdarstellung in Seitenansicht einen Wäschetrockner mit einem in einen Prozessluftkanal eingesetzten Filter; 1 shows a sectional side view of a clothes dryer with a filter inserted into a process air duct;
Fig.2 zeigt den Filter in einer Vorderansicht;  Fig. 2 shows the filter in a front view;
Fig.3 zeigt den Filter in der Vorderansicht mit einer teilweise entfernten Filterbürste; Fig. 3 shows the filter in front view with a partially removed filter brush;
Fig.4 zeigt die vollständig entfernte Filterbürste mit einem zugehörigen Kamm. Fig.1 zeigt als Schnittdarstellung in Seitenansicht einen Wäschetrockner W mit einem durch einen Lagerschild 2 in einen entsprechenden Aufnahmeraum 3 eingesetzten Filter 4. Der Aufnahmeraum 3 ist ein Teil eines Prozessluftkanals K. Der Filter 4, der somit einen Prozessluftfilter darstellt, quert den Prozessluftkanal K, dessen Prozessluftstrom durch die schraffierten Pfeile angedeutet ist, im Wesentlichen vollflächig. Der Filter kann bei geöffneter Tür D zur Reinigung aus dem Lagerschild 2 entnommen werden. Figure 4 shows the completely removed filter brush with an associated comb. 1 shows a sectional side view of a clothes dryer W with a filter 4 inserted through a bearing plate 2 into a corresponding receiving space 3. The receiving space 3 is part of a process air channel K. The filter 4, which thus represents a process air filter, traverses the process air channel K. whose process air flow is indicated by the hatched arrows, substantially over the entire surface. The filter can be removed with the door open D for cleaning from the bearing plate 2.
Die Prozessluft P strömt bei einem Betrieb des Wäschetrockners W auf eine grundsätzlich bekannte Weise aus einem Wäschetrocknungsraum R, die hier durch eine drehbare Wäschetrommel T ausgestaltet ist, zu dem Filter 4. Die Prozessluft P ist nach Überstreichen von in der Wäschetrommel T befindlicher Wäsche feucht und enthält Flusen sowie, zu einem geringen Anteil Haare. Die Prozessluft P strömt danach durch einen streifenförmigen oberen Rand 5 des Filters 4, welcher dazu mit Durchlassöffnungen 15 versehen ist. Die Prozessluft strömt weiter durch mindestens ein in einem Rahmen 6 gehaltenes Flusensieb 7, von dem die meisten, insbesondere gröberen, Flusen in der Prozessluft P zurückgehalten werden. Die nunmehr am Gehalt von Flusen wesentlich reduzierte Prozessluft P strömt weiter zu einer Wärmesenke S, an welcher die Prozessluft P kondensieren kann. Möglicherweise noch an der Wärmesenke S mit dem Kondensat abgeschiedene restliche Flusen und Haare können beispielsweise mittels einer Spüleinrichtung entfernt werden. Hinter der Wärmesenke S durchläuft die nunmehr getrocknete Prozessluft eine Heizung und ein Gebläse (nicht gezeigt) und wird als trocken-warme Prozessluft wieder in die Wäschetrommel T eingeblasen. The process air P flows in an operation of the clothes dryer W in a generally known manner from a laundry drying room R, which is here designed by a rotatable laundry drum T, to the filter 4. The process air P is after passing over laundry located in the laundry drum T and wet contains lint and, to a small extent, hair. The process air P then flows through a strip-shaped upper edge 5 of the filter 4, which is provided for this purpose with passage openings 15. The process air continues to flow through at least one lint filter 7 held in a frame 6, from which most, in particular coarser, fluff are retained in the process air P. The process air P, which is now significantly reduced in the content of lint, continues to flow to a heat sink S, at which the process air P can condense. Possibly still on the heat sink S with the condensate deposited residual lint and hair can, for example by means of a Rinsing device are removed. Behind the heat sink S, the now dried process air passes through a heater and a blower (not shown) and is blown back into the laundry drum T as dry-warm process air.
Zum Schutz des Rahmens 6 und zur Erlangung der für einen Einsatz des Filters 4 in den Aufnahmeraum 3 bevorzugten, in Seitenansicht keilförmigen Grundform, ist an einem unteren Rand 8 des Rahmens 6 an diesem ein verschwenkbarer Schutzrahmen 9 angeordnet, welcher wie gezeigt an den oberen Rand 5 verschwenkbar und dort lösbar befestigbar ist, z.B. durch eine Schnappverbindung. Die Schrägstellung des mit dem Flusensieb 7 ausgerüsteten Rahmens 6 bezüglich der einströmenden Prozessluft P reduziert einen Luftwiderstand für die Prozessluft P. To protect the frame 6 and to obtain the preferred for use of the filter 4 in the receiving space 3, wedge-shaped in side view basic shape, a pivotable protective frame 9 is arranged at a lower edge 8 of the frame 6, which as shown at the upper edge 5 pivotable and releasably attachable there, eg through a snap connection. The inclination of the equipped with the lint filter 7 frame 6 with respect to the incoming process air P reduces air resistance to the process air P.
Diese grundsätzliche Anordnung und Arbeitsweise eines mit einem wie bisher beschriebenen Filter ausgerüsteten Wäschetrockners W ist bekannt. Bei den bekannten Filtern werden jedoch Haare nicht effektiv zurückgehalten, welche somit in der ansonsten von Flusen weitgehend freien Prozessluft noch enthalten sind. Diese Haare können beispielsweise an die Wärmesenke oder in das Prozessluftgebläse gelangen und sich dort festsetzen; werden sie bei deren Reinigen von der Wärmesenke abgespült, so können sie sich in einer Kondensatwasserpumpe, die die Spülflüssigkeit abfördert, festsetzen. This basic arrangement and operation of an equipped with a filter as previously described clothes dryer W is known. In the known filters, however, hair is not effectively retained, which are thus still contained in the otherwise largely free of lint process air. These hairs can, for example, get to the heat sink or in the process air blower and settle there; If they are rinsed off during their cleaning by the heat sink, they can settle in a condensate water pump which carries off the rinsing liquid.
Um auch die Haare aus der Prozessluft filtern zu können, weist der Filter 4 nun zusätzlich eine Filterbürste 10 auf, welche an zwei außenseitig zwischen dem oberen Rand 5 und dem Rahmen 6 angebrachten Halterungselementen 1 1 für den Bürstenfilter 10 gehaltert ist. Die Halterungselemente 1 1 weisen jeweils ein kreisförmiges Loch 12 zum endständigen Einsatz des Bürstenfilters 10 auf. Der Rahmen 6, der obere Rand 5, der Schutzrahmen 9 und die Halterungselemente 1 1 können einstückig aus Kunststoff gefertigt sein, z.B. mittels eines Spritzgussverfahrens. In order to be able to filter the hair from the process air, the filter 4 now also has a filter brush 10, which is supported on two externally mounted between the upper edge 5 and the frame 6 support members 1 1 for the brush filter 10. The support elements 1 1 each have a circular hole 12 for terminal use of the brush filter 10. The frame 6, the upper edge 5, the protective frame 9 and the support members 1 1 may be made in one piece from plastic, e.g. by means of an injection molding process.
Fig.2 zeigt den Filter 4 in einer Vorderansicht bezüglich des Prozessluftstroms, d.h. in einer Sicht auf den Filter 4, bevor die Prozessluft P diesen durchströmt. Der Schutzrahmen 9 ist hier ausschnittsweise in einer heruntergeklappten Stellung gezeigt. Der Rahmen 6 weist eine U-förmige Außenstrebe 13 und eine senkrechte Mittelstrebe 14 auf, die oberseitig von dem oberen Rand 5 abgeschlossen werden. Durch die Mittelstrebe 14 wird eine Steifigkeit des Filters 4 verbessert, und es werden zwei Teilräume zur Aufnahme jeweils eines gleichartigen Flusensiebs bzw. eines zweiteiligen Flusensiebs 7 geschaffen. Der Filter 4 wird typischerweise an seinem oberen Rand 5 gegriffen. Der obere Rand 5 schließt typischerweise die Öffnung des Aufnahmeraum 3 in dem Lagerschild 2 ab. 2 shows the filter 4 in a front view with respect to the process air flow, ie in a view of the filter 4, before the process air P flows through it. The protective frame 9 is shown here in sections in a folded-down position. The frame 6 has a U-shaped outer strut 13 and a vertical center strut 14, which are completed on the upper side of the upper edge 5. Through the middle strut 14, a rigidity of the filter 4 is improved, and two subspaces for receiving a respective lint filter or a two-part lint filter 7 are provided. The filter 4 is typically gripped at its upper edge 5. The upper edge 5 typically closes the opening of the receiving space 3 in the bearing plate 2.
Es wird bemerkt, dass statt des Schutzrahmens 9 ein weiteres Flusensieb 7 vorgesehen sein kann, wodurch der Filter 4 die Gestalt eines symmetrischen V erhält, wobei im Betrieb beide Flusensiebe 7 gleichermaßen von der Prozessluft P durchströmt werden. Der Bürstenfilter 10 überdeckt von unten die in dem oberen Rand 5 vorhandenen schlitzförmigen Durchlassöffnungen 15 und wird somit von der Prozessluft P durchströmt. Dies bedeutet, dass die Prozessluft P zunächst von der Wäschetrommel T kommend durch die Durchlassöffnungen 15 und weiter durch den Bürstenfilter 10 strömt, in welchem die Haare effektiv zurückgehalten werden, Flusen jedoch nicht oder nur in geringem Maße. Der Bürstenfilter 10 wird folglich nicht durch Flusen zugesetzt. Durch die vergleichsweise grobe Struktur des Bürstenfilters 10 findet an diesem kaum ein It is noted that instead of the protective frame 9, a further lint filter 7 may be provided, whereby the filter 4 receives the shape of a symmetrical V, wherein both lint screens 7 are equally flowed through by the process air P. The brush filter 10 covers from below the existing in the upper edge 5 slot-shaped passage openings 15 and is thus flowed through by the process air P. This means that the process air P first flows from the laundry drum T through the passage openings 15 and onwards through the brush filter 10, in which the hair is effectively retained, but lint or only to a small extent. The brush filter 10 is therefore not added by lint. Due to the comparatively coarse structure of the brush filter 10 is hardly on this
Druckverlust statt. Der Bürstenfilter 10 weist eine walzenartige Form und einen Pressure loss instead. The brush filter 10 has a roller-like shape and a
Flaschenbürstenbesatz auf, wie in Fig.4 genauer beschrieben wird. Die von Haaren befreite Prozessluft P strömt dann weiter zu dem herkömmlichen Flusensieb 7, wo die Flusen zurückgehalten werden. Flaschenbürstenbesatz on, as described in more detail in Figure 4. The hair-free process air P then continues to flow to the conventional lint filter 7, where the lint is retained.
Fig.3 zeigt den Filter 4 mit dem teilweise entfernten Bürstenfilter 10. Der Bürstenfilter 10 wird zu seiner Entfernung durch eines der Halterungselemente 1 1 , nämlich hier das rechte der Halterungselemente 1 1 , gezogen. Die Halterungselemente 1 1 dienen zusätzlich jeweils als ein Kamm oder Bürstenkamm, so dass mit dem Herausziehen des Bürstenfilters 10 dieser von Haaren gereinigt wird. Die Haare, welche zuvor aus der Prozessluft P gefiltert worden sind, verbleiben in dem Halterungselement / Kamm 1 1 und können von dort einfach entfernt werden. Ggf. kann dieser Kämmvorgang mehrmals wiederholt werden. 3 shows the filter 4 with the partially removed brush filter 10. The brush filter 10 is pulled to its removal by one of the support members 1 1, namely here the right of the support members 1 1. The support members 1 1 additionally serve each as a comb or brush comb, so that when pulling out the brush filter 10 of this is cleaned of hair. The hair, which has been previously filtered from the process air P, remain in the support member / comb 1 1 and can be easily removed from there. Possibly. This combing process can be repeated several times.
Fig.4 zeigt den vollständig entfernten Bürstenfilter 10 mit dem zugehörigen kombinierten Halterungselement und Kamm 1 1. Das Halterungselement bzw. der Kamm 1 1 ist aus einem flexiblen Kunststoff gefertigt und weist an seinem inneren Rand umlaufend angeordnete Zinken 15 auf. Die Zinken 15 stehen leicht angeschrägt in Richtung des Rahmens des Filters 4 und damit in Richtung des eingesetzten Bürstenfilters 10. So werden die Zinken 15 bei einem Herausziehen des Bürstenfilters 10 nach Innen gebogen und werden damit für eine besonders gründliche Kämmwirkung in den Bürstenfilter 10 hineingebogen. Die Haare H verbleiben zwischen den Zinken 15 und können leicht von Hand entfernt werden. 4 shows the completely removed brush filter 10 with the associated combined support member and comb 1 1. The support member or the comb 1 1 is made of a flexible plastic and has at its inner edge circumferentially arranged tines 15 on. The tines 15 are slightly bevelled in the direction of the frame of the filter 4 and thus in the direction of the brush filter used 10. Thus, the tines 15 are bent when pulling out of the brush filter 10 to the inside and are thus bent into the brush filter 10 for a particularly thorough combing action. The hairs H remain between the prongs 15 and can be easily removed by hand.
Der Bürstenfilter 10 weist eine walzenartige Grundform mit einem länglichen, ggf. biegsamen, Stiel 16 und einem daran angebrachten Flaschenbürstenbesatz 17 auf, z.B. ähnlich zu einer Haushaltsflaschenbürste. The brush filter 10 has a roller-like basic shape with an elongate, optionally flexible stem 16 and a bottle brush attachment 17 attached thereto, e.g. similar to a household bottle brush.
Selbstverständlich ist die vorliegende Erfindung nicht auf das gezeigte Ausführungsbeispiel beschränkt. So kann die Filterbürste 10 auch hinter dem herkömmlichen Flusensieb 7 angeordnet sein. Dadurch werden zuerst die Flusen und dann die Haare aus dem Prozessluftstrom entfernt. Auch kann der der Filter 4 an einer anderen Stelle in dem Wäschetrockner angeordnet sein, z.B. in einer Tür. Das Wäschetrocknungsgerät kann allgemein ein Wäschetrockner oder ein Waschtrockner sein. Of course, the present invention is not limited to the embodiment shown. Thus, the filter brush 10 may also be arranged behind the conventional lint filter 7. This will remove the lint and then the hair from the process air stream first. Also, the filter 4 may be disposed at a different location in the tumble dryer, eg in a door. The clothes dryer may generally be a tumble dryer or a washer dryer.
„"
Bezugszeichenliste LIST OF REFERENCE NUMBERS
2 Lagerschild 2 end shield
3 Aufnahmeraum  3 recording room
4 Filter  4 filters
5 oberer Rand 5 upper edge
6 Rahmen  6 frames
7 Flusensieb  7 lint filter
8 unterer Rand  8 lower edge
9 Schutzrahmen  9 protective frame
10 Filterbürste / Bürstenfilter 10 filter brush / brush filter
11 Halterungselement / Kamm  11 retaining element / comb
12 Loch  12 holes
13 Außenstrebe  13 outer strut
14 Mittelstrebe  14 center brace
15 Zinken 15 prongs
16 Stiel  16 stalk
17 Flaschenbürstenbesatz  17 bottle brush trim
H Haare H hair
W Wäschetrockner  W tumble dryer
R Wäschetrocknungsraum R laundry drying room
T Wäschetrommel  T laundry drum
5 Wärmesenke  5 heat sink
K Prozessluftkanal  K process air duct

Claims

Patentansprüche claims
Flusenfilter (4) für ein Wäschetrocknungsgerät (W), wobei der Flusenfilter (4) zur Verwendung in einem Prozessluftkanal (K) des Wäschetrocknungsgeräts (W) vorgesehen ist und mindestens einen Bürstenfilter (10) aufweist. Lint filter (4) for a laundry drying apparatus (W), wherein the lint filter (4) is provided for use in a process air duct (K) of the laundry drying apparatus (W) and has at least one brush filter (10).
Flusenfilter (4) nach Anspruch 1 , wobei der Bürstenfilter (10) eine walzenartige Form aufweist. The lint filter (4) according to claim 1, wherein the brush filter (10) has a roller-like shape.
Flusenfilter (4) nach einem der vorhergehenden Ansprüche, wobei der Bürstenfilter (10) einen Flaschenbürstenbesatz (17) aufweist. Lint filter (4) according to one of the preceding claims, wherein the brush filter (10) comprises a bottle brush attachment (17).
Flusenfilter (4) nach einem der vorhergehenden Ansprüche, wobei der Flusenfilter (4) ein Flusensieb (7) aufweist und der Bürstenfilter (10) in Strömungsrichtung hinter dem Flusensieb (7) angeordnet ist. Lint filter (4) according to one of the preceding claims, wherein the lint filter (4) has a lint filter (7) and the brush filter (10) is arranged in the flow direction behind the lint filter (7).
Flusenfilter (4) nach einem der vorhergehenden Ansprüche, wobei der Flusenfilter (4) ferner einen Flusenkamm (1 1 ) zur Reinigung des Bürstenfilters (10) aufweist. Lint filter (4) according to one of the preceding claims, wherein the lint filter (4) further comprises a lint comb (1 1) for cleaning the brush filter (10).
Flusenfilter (4) nach Anspruch 5, wobei der Flusenkamm (1 1 ) ein Loch (12) mit an dessen Innenrand angebrachten Zinken (15) aufweist und wobei der Bürstenfilter (10) zu seiner Reinigung durch den Flusenkamm (1 1 ) bewegbar ist. Lint filter (4) according to claim 5, wherein the lint comb (11) has a hole (12) with tines (15) attached to its inner edge and wherein the brush filter (10) is movable for its cleaning by the lint comb (11).
Flusenfilter (4) nach einem der Ansprüche 5 oder 6, wobei der Flusenkamm (1 1 ) ein Halterungselement (1 1 ) für den Bürstenfilter (10) darstellt. Lint filter (4) according to any one of claims 5 or 6, wherein the lint comb (1 1) is a support member (1 1) for the brush filter (10).
Wäschetrocknungsgerät (W) mit einem Prozessluftkanal (K), wobei in dem Prozessluftkanal (K) ein Flusenfilter (4) nach einem der vorhergehenden Ansprüche vorgesehen ist. Laundry drying apparatus (W) with a process air duct (K), wherein in the process air duct (K) a lint filter (4) according to one of the preceding claims is provided.
9. Verfahren zum Reinigen eines Flusenfilters (4), insbesondere nach einem der Ansprüche 1 bis 7, für ein Wäschetrocknungsgerät (W), wobei der Flusenfilter (4) mindestens einen Bürstenfilter (10) aufweist, und wobei das Verfahren mindestens den folgenden Schritt aufweist: 9. A method for cleaning a lint filter (4), in particular according to one of claims 1 to 7, for a laundry drying apparatus (W), wherein the lint filter (4) comprises at least one brush filter (10), and wherein the method comprises at least the following step :
Hindurchziehen des Bürstenfilters (10) durch einen an dem Flusenfilter (4) angebrachten Flusenkamm (1 1 ) mit innenliegenden Zinken (15).  Pulling the brush filter (10) through a on the lint filter (4) attached lint ridge (1 1) with internal prongs (15).
10. Verfahren nach Anspruch 9, bei dem der Bürstenfilter (10) eine walzenartige Form und der Flusenkamm (1 1 ) eine ringartige Form aufweist. 10. The method of claim 9, wherein the brush filter (10) has a roller-like shape and the lint comb (1 1) has a ring-like shape.
EP10776635.4A 2009-11-06 2010-10-29 Domestic dryer with a lint filter and method for cleaning a lint filter Not-in-force EP2496756B1 (en)

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DE102009046453A DE102009046453A1 (en) 2009-11-06 2009-11-06 Lint filter for a clothes dryer and method for cleaning a lint filter
PCT/EP2010/066524 WO2011054767A1 (en) 2009-11-06 2010-10-29 Lint filter for a domestic dryer and method for cleaning a lint filter

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EP2496756B1 EP2496756B1 (en) 2013-07-10

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PL2496756T3 (en) 2013-12-31

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