EP1098028A2 - Laundry drier with self-cleaning lint filter - Google Patents

Laundry drier with self-cleaning lint filter Download PDF

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Publication number
EP1098028A2
EP1098028A2 EP00123244A EP00123244A EP1098028A2 EP 1098028 A2 EP1098028 A2 EP 1098028A2 EP 00123244 A EP00123244 A EP 00123244A EP 00123244 A EP00123244 A EP 00123244A EP 1098028 A2 EP1098028 A2 EP 1098028A2
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EP
European Patent Office
Prior art keywords
dry air
air duct
lint
fluff
lint filter
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
EP00123244A
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German (de)
French (fr)
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EP1098028A3 (en
EP1098028B1 (en
Inventor
Andreas Dr.-Ing. Ziemann
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
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BSH Bosch und Siemens Hausgeraete GmbH
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Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP1098028A2 publication Critical patent/EP1098028A2/en
Publication of EP1098028A3 publication Critical patent/EP1098028A3/en
Application granted granted Critical
Publication of EP1098028B1 publication Critical patent/EP1098028B1/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 
    • D06F58/22—Lint collecting arrangements

Definitions

  • the invention relates to a clothes dryer with a dry air blower, one in a lint filter arranged in a dry air duct, a device for blowing off of lint from the lint filter and a device for removing blown off Lint.
  • German utility model DE 94 04 929 U1 is such a tumble dryer known, in which the lint filters blow nozzles to blow off the lint are assigned, which are connected to a compressed air source and with the help of Valves can be pressurized with compressed air.
  • this is disadvantageous at least one compressed air source and compressed air valves necessary, which are considerable Represent effort.
  • the present invention has for its object a dryer to create the type mentioned, in which the blowing and removing the fluff can be carried out by the lint filter with particularly little effort.
  • a tumble dryer the facilities to reduce or close the cross section of the dry air duct and for generating an air jet for blowing off fluff when the is on Has dry air blower.
  • the dry air flow is blocked and can be used to create an air jet for blowing.
  • the dry air duct can be narrowed or closed with a flap be, with a further device is provided with the under pressure standing air in front of the constriction or occlusion point and against the Lint filter can be passed.
  • This can be the flap or the device in general a device for closing or narrowing the dry air duct itself such as having a controllable valve with an air nozzle, with which the air jet generates and can be directed onto the lint filter.
  • Farther can also be provided an additional air duct, the constriction or Locking point is connected to the dry air duct. If the establishment has a controllable valve for generating the air jet, this can Delayed opening after closing or narrowing the dry air duct so that there is a higher pressure in front of the closure or constriction point can build up. Furthermore, it can also be controlled intermittently in order to intermittent blowing on the fluff filter to achieve a higher cleaning effect.
  • the additional facility required to reduce or close the Dry air duct cross section can be realized very easily and inexpensively.
  • These can be, for example, bodies that are pushed into the dry air duct or swung in, also being unfoldable or inflatable Hollow bodies are conceivable. It can also be provided that the Limits of the dry air duct are movable, and so the cross section of the Dry air duct can be reduced.
  • the device for reducing or closing the Cross section of the dry air duct can also be generated.
  • the air jet can with narrowed dry air duct in the remaining constriction or at closed dry air duct in a breakthrough in the device for closing of the dry air duct are generated.
  • the cross section of the dry air duct can be reduced in such a way that one is possible sharp and focused air jet can be directed onto the lint filter.
  • the air jet can be directed onto the edge of the fluff filter to create a peel off the lint covering from the edge.
  • a clothes dryer according to the invention advantageously has an air guiding device with which the dry air duct cross-section is reduced or closed a generated air jet with a flat impact angle on the fluff filter can be directed.
  • the air jet can have a flat impact angle to the edge of the fluff filter.
  • the flat blowing on the lint filter can be achieved, for example, by creates a cross-sectional narrowing of the dry air duct at the edge of the lint filter is and an air deflection part is arranged next to the lint filter directs the generated air jet at a flat angle to the lint filter.
  • Farther can reduce the cross-section of the dry air duct next to the lint filter be so that the air to flow through the lint filter this necessarily flows at an angle. If the dry air duct with a retractable or collapsible body is narrowed, this can be the narrowest part forming edge or the part located behind it in the direction of flow that the flow along the surface into the desired Direction is headed.
  • the fluff filter can be used shortly after the Dry air duct arranged and the narrowing of the dry air duct on the inside the dry air duct bend are generated so that the air jet passes the lint filter Flows at a flat angle or parallel to the surface, provided the lint filter aligned behind the bend essentially perpendicular to the dry air duct is.
  • a device is advantageously provided with which the blown and removed Lint can be transported to a collection container. In this way the fluff rarely needs to be removed by an operator.
  • the Lint can, for example, be suctioned off and placed in a filter Collection containers are directed.
  • a filter bag can be used which can be disposed of together with the fluff. Furthermore, can also during an opening in the wall of the dry air duct is released during the blow-off process through which the air jet can remove the blown-off fluff.
  • the collecting container can have a signal device for monitoring the filling level be assigned. For example, an operator can determine the degree of filling of the Show collection container or be designed so that they only when reached of a certain degree of filling gives a signal so that the operator the degree of filling does not have to constantly monitor the fluff collecting container.
  • a pivotable flap is provided, those that reduce or close the cross section of the dry air duct Position opens an opening in the wall of the dry air duct, through which the blown off fluff can be removed. That way with a very simple and inexpensive component of the dry air duct in the Cross section can be reduced or closed and at the same time ensured that the blown-off lint is removed by being blown off by the blow-off air jet through the open opening in the wall of the dry air duct to be blown through. A lint collection container can be connected to this opening his.
  • a simple flap can be used, which at one end is hinged to a wall of the dry air duct, in this case describes the free end when swinging into the dry air duct an arc and can create a constriction on the other side of the dry air duct, in which increases the flow rate when the dry air blower is switched on is so that the fluff can be blown away with the air jet generated.
  • the filter can be installed at an angle, so that the front edge is close the constriction and the rear part of the filter is not the movement of the flap with special needs.
  • the required angle of attack of the filter can be reduced by the lint filter is curved so that it is the trajectory of the free end essentially follows the flap. In this way, one edge of the lint filter immediately after the narrow point with the flap swung in and in addition the air jet generated in the constriction becomes flat Angle directed to the lint filter.
  • the flap in front on the outside of the Bend is articulated so that when swung into the dry air duct on creates the constriction in the inside of the end of the fluff filter.
  • blower output of the dry air blower for blowing off fluff for a short time can be increased. Since this process only takes a short time, one can also The nominal load capacity of the blower motor may be exceeded.
  • the tumble dryer 1 shown in Fig. 1 has a rotatably mounted drum 2 for receiving the laundry 5 to be dried.
  • the drum 2 has one perforated drum base and a loading opening on the opposite end, the articulated by means of a to the housing of the dryer 1 Door 9 can be closed.
  • a blower 3 can be used Dry air flow are generated by the drum 2, the door 9 and a cooled Condenser 6 for removing moisture from the dry air flow runs and is shown in Fig. 1 with arrows.
  • Heating device 4 is provided for heating the dry air flow.
  • a fluff filter 7 is in the flow direction behind the drum 2 Dry air duct arranged, with the detached fluff 11 in particular be held back.
  • a controllable flap 8 on Edge of the dry air duct hinged In front of the lint filter 7 is a controllable flap 8 on Edge of the dry air duct hinged. The flap 8 can be pivoted in this way be that there is only a small gap at the linkage leaves opposite wall of the dry air duct free.
  • the lint filter 7 and the flap 8 are designed so that the fluff filter 7 the movement of the flap 8th not hindered and that the flap 8 in its constricting the dry air channel Position can produce the gap as close as possible to the lint filter 7.
  • a control device 10 is provided for the laundry dryer and its components, which is arranged at the top of the front of the clothes dryer 1.
  • FIG. 2 shows the device for removing lint in a first operating position shown during the normal drying operation of the clothes dryer 1.
  • the flap 8 bears against the wall of the dry air duct, closes the opening leading to the lint collecting container 9 and gives the lint filter 7 completely free for the dry air flow. In this phase gather the lint 11 on the lint filter 7.
  • the control device 10 starts a cleaning phase initiated, in which the flap 8 is pivoted so that it to the Lint collection container 9 opens opening and the dry air duct up blocked a gap that is formed near an edge of the lint filter 7.
  • This state is shown in Fig. 3.
  • the fan 3 remains on during this time or can even be activated for a short time beyond its nominal power become. This creates a sharp jet of air in the gap created by the flap 8 generated, which blows the lint 11 away from the lint filter 7 and into the lint collecting container 9 promoted.
  • This has an air-permeable wall section that as far as possible from the supply opening in the dry air duct and the blown into it Can hold back lint 11.
  • the lint collection container 9 essentially airtight in its inclusion in the tumble dryer 1, with an air-permeable lint filter on its front is arranged.
  • the cleaning phase can, for example, during a cooling phase at the end of the drying program, if the heating is switched off 4 the blower for cooling the laundry 5 is switched on for a while remains.
  • FIGS. 4 and 5 are two further embodiments for the design of the Dry air channel shown to the air jet generated by the flap 8 on the To lead lint filter 7.
  • an air deflection part 12 on the wall of the Dry air duct can be arranged, the air jet flat on the lint filter 7 directs.
  • the dry air duct can be widened in front of the constriction to guide the air jet flat against the lint filter 7 from the outside.
  • Fig. 6 is an embodiment with a flat and perpendicular to the dry air duct arranged lint filter 7 shown, in which the lint filter 7 directly is arranged behind a right-angled deflection of the dry air flow.
  • the flap 8 is articulated on the outside of the deflection and can be pivoted inwards become.
  • the gap is also at an edge of the lint filter 7 generated, the air jet flowing against the lint filter 7 substantially in parallel.
  • the lint 11 is at the front end in the lint collecting container 9 passed, in which the air-permeable wall section here advantageously is arranged at the rear end so that the lint collecting container 9 from can be filled with fluff 11 at the back.
  • the inclusion of the dryer 1 for the lint collecting container 9 must be designed so that the Air escaping from the rear into the inside of the device and from there to the outside can.
  • FIG. 7 Another example of an inventive device for blowing off the Fluff 11 is shown in Figure 7, in which the flap 8 the dry air duct can completely block and at the same time a first opening through which the jammed Dry air can escape, and a second opening through which the Blown off fluff 11 can be removed.
  • This is done by the first Dammed dry air escaping through the opening by means of an additional air duct and a nozzle blown against the lint filter 7 from behind.
  • the one through the lint filter air jet blown through lifts the lint 11 and conveys it through the second released opening as in the previously described cases the lint collecting container 9.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Detergent Compositions (AREA)

Abstract

The machine has a drying air fan, a filter (7) for pieces of fabric in a drying air channel, a device for blowing out pieces of fabric from the filter and a device for removing pieces of fabric that have been blown out. The machine has devices (8) for reducing or closing the cross-section of the drying air channel and for producing an air steam for blowing out pieces of fabric (11) when the drying air fan is switched on.

Description

Die Erfindung betrifft einen Wäschetrockner mit einem Trockenluftgebläse, einem in einem Trockenluftkanal angeordneten Flusenfilter, einer Einrichtung zum Abblasen von Flusen von dem Flusenfilter und einer Einrichtung zum Entfernen von abgeblasenen Flusen.The invention relates to a clothes dryer with a dry air blower, one in a lint filter arranged in a dry air duct, a device for blowing off of lint from the lint filter and a device for removing blown off Lint.

Durch das deutsche Gebrauchsmuster DE 94 04 929 U1 ist ein derartiger Wäschetrockner bekannt, bei dem zum Abblasen der Flusen den Flusenfiltern Blasdüsen zugeordnet sind, die an eine Druckluftquelle angeschlossen sind und mit Hilfe von Ventilen mit Druckluft beaufschlagt werden können. Dazu sind jedoch nachteiligerweise wenigstens eine Druckluftquelle sowie Druckluftventile nötig, die einen erheblichen Aufwand darstellen.The German utility model DE 94 04 929 U1 is such a tumble dryer known, in which the lint filters blow nozzles to blow off the lint are assigned, which are connected to a compressed air source and with the help of Valves can be pressurized with compressed air. However, this is disadvantageous at least one compressed air source and compressed air valves necessary, which are considerable Represent effort.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, einen Wäschetrockner der eingangs genannten Art zu schaffen, bei dem das Abblasen und Entfernen der Flusen vom Flusenfilter mit besonders geringem Aufwand durchgeführt werden kann.The present invention has for its object a dryer to create the type mentioned, in which the blowing and removing the fluff can be carried out by the lint filter with particularly little effort.

Diese Aufgabe wird erfindungsgemäß durch einen Wäschetrockner gelöst, der Einrichtungen zum Verringern oder Verschließen des Querschnitts des Trockenluftkanals und zum Erzeugen eines Luftstrahls zum Abblasen von Flusen bei eingeschaltetem Trockenluftgebläse aufweist. Der Trockenluftstrom wird dabei gestaut und kann zum Erzeugen eines Luftstrahls zum Abblasen verwendet werden. Beispielsweise kann der Trockenluftkanal mit einer Klappe verengt oder verschlossen werden, wobei eine weitere Einrichtung vorgesehen ist, mit der unter Überdruck stehende Luft vor der Verengungs- oder Verschlußstelle abgeleitet und gegen das Flusenfilter geleitet werden kann. Dazu kann die Klappe oder allgemein die Einrichtung zum Verschließen oder Verengen des Trockenluftkanals selbst eine Einrichtung wie beispielsweise ein steuerbares Ventil mit einer Luftdüse aufweisen, mit der der Luftstrahl erzeugt und auf das Flusenfilter gerichtet werden kann. Weiterhin kann auch ein zusätzlicher Luftkanal vorgesehen sein, der vor der Verengungs- oder Verschlußstelle an den Trockenluftkanal angeschlossen ist. Wenn die Einrichtung zum Erzeugen des Luftstrahls ein steuerbares Ventil aufweist, kann dieses nach dem Verschließen oder Verengen des Trockenluftkanals zeitverzögert geöffnet werden, damit sich vor der Verschluß- oder Verengungsstelle ein höherer Druck aufbauen kann. Ferner kann es auch intermittierend angesteuert werden, um durch ein stoßweises Anblasen des Flusenfilters eine höhere Reinigungswirkung zu erzielen.This object is achieved according to the invention by a tumble dryer, the facilities to reduce or close the cross section of the dry air duct and for generating an air jet for blowing off fluff when the is on Has dry air blower. The dry air flow is blocked and can be used to create an air jet for blowing. For example the dry air duct can be narrowed or closed with a flap be, with a further device is provided with the under pressure standing air in front of the constriction or occlusion point and against the Lint filter can be passed. This can be the flap or the device in general a device for closing or narrowing the dry air duct itself such as having a controllable valve with an air nozzle, with which the air jet generates and can be directed onto the lint filter. Farther can also be provided an additional air duct, the constriction or Locking point is connected to the dry air duct. If the establishment has a controllable valve for generating the air jet, this can Delayed opening after closing or narrowing the dry air duct so that there is a higher pressure in front of the closure or constriction point can build up. Furthermore, it can also be controlled intermittently in order to intermittent blowing on the fluff filter to achieve a higher cleaning effect.

Die zusätzlich erforderliche Einrichtung zum Verringern oder Verschließen des Trockenluftkanalquerschnitts kann sehr einfach und kostengünstig realisiert werden. Dies können beispielsweise Körper sein, die in den Trockenluftkanal hineingeschoben oder hineingeschwenkt werden, wobei auch auseinanderfaltbare oder aufblasbare Hohlkörper denkbar sind. Ferner kann auch vorgesehen werden, daß die Begrenzungen des Trockenluftkanals beweglich sind, und so der Querschnitt des Trockenluftkanals verringert werden kann.The additional facility required to reduce or close the Dry air duct cross section can be realized very easily and inexpensively. These can be, for example, bodies that are pushed into the dry air duct or swung in, also being unfoldable or inflatable Hollow bodies are conceivable. It can also be provided that the Limits of the dry air duct are movable, and so the cross section of the Dry air duct can be reduced.

Vorteilhafterweise kann von der Einrichtung zum Verringern oder Verschließen des Querschnitts des Trockenluftkanals auch der Luftstrahl erzeugt werden. Der Luftstrahl kann bei verengtem Trockenluftkanal in der verbleibenden Engstelle oder bei verschlossenem Trockenluftkanal in einem Durchbruch in der Einrichtung zum Verschließen des Trockenluftkanals erzeugt werden.Advantageously, the device for reducing or closing the Cross section of the dry air duct, the air jet can also be generated. The air jet can with narrowed dry air duct in the remaining constriction or at closed dry air duct in a breakthrough in the device for closing of the dry air duct are generated.

Der Querschnitt des Trockenluftkanals kann derart verringert werden, daß ein möglichst scharfer und gebündelter Luftstrahl auf das Flusenfilter geleitet werden kann. Der Luftstrahl kann dabei auf den Rand des Flusenfilters gerichtet werden, um einen dort angelagerten Flusenbelag vom Rand her abzulösen.The cross section of the dry air duct can be reduced in such a way that one is possible sharp and focused air jet can be directed onto the lint filter. The air jet can be directed onto the edge of the fluff filter to create a peel off the lint covering from the edge.

Vorteilhafterweise weist ein erfindungsgemäßer Wäschetrockner eine Luftleitvorrichtung auf, mit der bei verringertem oder verschlossenem Trockenluftkanalquerschnitt ein erzeugter Luftstrahl mit einem flachen Auftreffwinkel auf das Flusenfilter geleitet werden kann. Insbesondere kann der Luftstrahl mit einem flachen Auftreffwinkel auf den Rand des Flusenfilters geleitet werden.A clothes dryer according to the invention advantageously has an air guiding device with which the dry air duct cross-section is reduced or closed a generated air jet with a flat impact angle on the fluff filter can be directed. In particular, the air jet can have a flat impact angle to the edge of the fluff filter.

Das flache Anblasen des Flusenfilters kann beispielsweise erreicht werden, indem eine Querschnittsverengung des Trockenluftkanals am Rand des Flusenfilters erzeugt wird und neben dem Flusenfilter ein Luftumlenkungsteil angeordnet ist, das den erzeugten Luftstrahl im flachen Winkel auf das Flusenfilter leitet. Weiterhin kann die Querschnittsverengung des Trockenluftkanals neben dem Flusenfilter erzeugt werden, so daß die Luft zum Hindurchströmen durch das Flusenfilter dieses notwendigerweise schräg anströmt. Wenn der Trockenluftkanal mit einem einschiebbaren oder einklappbaren Körper verengt wird, kann bei diesem die die Engstelle bildende Kante bzw. der in Strömungsrichtung dahinter liegende Teil so ausgebildet werden, daß die Strömung an der Oberfläche entlang in die gewünschte Richtung geleitet wird. Weiterhin kann das Flusenfilter kurz nach einer Biegung des Trockenluftkanals angeordnet und die Verengung des Trockenluftkanals innen an der Trockenluftkanalbiegung erzeugt werden, so daß der Luftstrahl das Flusenfilter in einem flachen Winkel oder parallel zur Oberfläche anströmt, sofern das Flusenfilter hinter der Biegung im wesentlichen senkrecht zum Trockenluftkanal ausgerichtet ist.The flat blowing on the lint filter can be achieved, for example, by creates a cross-sectional narrowing of the dry air duct at the edge of the lint filter is and an air deflection part is arranged next to the lint filter directs the generated air jet at a flat angle to the lint filter. Farther can reduce the cross-section of the dry air duct next to the lint filter be so that the air to flow through the lint filter this necessarily flows at an angle. If the dry air duct with a retractable or collapsible body is narrowed, this can be the narrowest part forming edge or the part located behind it in the direction of flow that the flow along the surface into the desired Direction is headed. Furthermore, the fluff filter can be used shortly after the Dry air duct arranged and the narrowing of the dry air duct on the inside the dry air duct bend are generated so that the air jet passes the lint filter Flows at a flat angle or parallel to the surface, provided the lint filter aligned behind the bend essentially perpendicular to the dry air duct is.

Vorteilhafterweise ist eine Einrichtung vorgesehen, mit der abgeblasene und entfernte Flusen in einen Sammelbehälter befördert werden können. Auf diese Weise müssen die Flusen von einer Bedienperson nur noch selten entfernt werden. Die Flusen können beispielsweise abgesaugt und in einen mit einem Filter ausgerüsteten Sammelbehälter geleitet werden. Dazu kann ein Filterbeutel verwendet werden, der zusammen mit den Flusen entsorgt werden kann. Ferner kann auch während des Abblasvorgangs eine Öffnung in der Wand des Trockenluftkanals freigegeben werden, durch die der Luftstrahl die abgeblasenen Flusen heraus befördern kann. Dem Sammelbehälter kann eine Signalvorrichtung zum Überwachen des Füllgrades zugeordnet sein. Diese kann beispielsweise eine Bedienperson den Füllgrad des Sammelbehälters anzeigen oder auch so ausgelegt sein, daß sie nur bei Erreichen eines bestimmten Füllgrades ein Signal abgibt, so daß die Bedienperson den Füllgrad des Flusensammelbehälters nicht ständig überwachen muß.A device is advantageously provided with which the blown and removed Lint can be transported to a collection container. In this way the fluff rarely needs to be removed by an operator. The Lint can, for example, be suctioned off and placed in a filter Collection containers are directed. A filter bag can be used which can be disposed of together with the fluff. Furthermore, can also during an opening in the wall of the dry air duct is released during the blow-off process through which the air jet can remove the blown-off fluff. The collecting container can have a signal device for monitoring the filling level be assigned. For example, an operator can determine the degree of filling of the Show collection container or be designed so that they only when reached of a certain degree of filling gives a signal so that the operator the degree of filling does not have to constantly monitor the fluff collecting container.

In einer besonders vorteilhaften Ausführungsform ist zum Verringern oder Verschließen des Querschnitts des Trockenluftkanals eine schwenkbare Klappe vorgesehen, die in einer den Querschnitt des Trockenluftkanals verringernden oder verschließenden Stellung eine Öffnung in der Wand des Trockenluftkanals freigibt, durch die die abgeblasenen Flusen entfernt werden können. Auf diese Weise kann mit einem sehr einfachen und kostengünstigen Bauteil der Trockenluftkanal im Querschnitt verringert oder verschlossen werden und gleichzeitig dafür gesorgt werden, daß die abgeblasenen Flusen entfernt werden, indem sie von dem Abblasluftstrahl durch die freigegebene Öffnung in der Wand des Trockenluftkanals hindurch geblasen werden. An diese Öffnung kann ein Flusensammelbehälter angeschlossen sein.In a particularly advantageous embodiment is to reduce or close of the cross section of the dry air duct, a pivotable flap is provided, those that reduce or close the cross section of the dry air duct Position opens an opening in the wall of the dry air duct, through which the blown off fluff can be removed. That way with a very simple and inexpensive component of the dry air duct in the Cross section can be reduced or closed and at the same time ensured that the blown-off lint is removed by being blown off by the blow-off air jet through the open opening in the wall of the dry air duct to be blown through. A lint collection container can be connected to this opening his.

Im einfachsten Fall kann eine einfache Klappe verwendet werden, die an einem Ende an einer Wand des Trockenluftkanals angelenkt ist, In diesem Fall beschreibt das freie Ende beim Hineinschwenken in den Trockenluftkanal einen Kreisbogen und kann auf der anderen Seite des Trockenluftkanals eine Engstelle erzeugen, in der bei eingeschaltetem Trockenluftgebläse die Strömungsgeschwindigkeit erhöht ist, so daß mit dem erzeugten Luftstrahl die Flusen weggeblasen werden können. Um nun den Abstand von dieser Engstelle zum Flusenfilter so gering wie möglich zu halten, kann das Filter schräg eingebaut werden, so daß der vordere Rand nahe der Engstelle liegt und der hintere Teil des Filters die Bewegung der Klappe nicht behindert. Der dafür nötige Anstellwinkel des Filters kann verringert werden, indem das Flusenfilter gekrümmt wird, so daß es der Bewegungsbahn des freien Endes der Klappe im wesentlichen folgt. Auf diese Weise kann der eine Rand des Flusenfilters unmittelbar hinter der Engstelle bei eingeschwenkter Klappe angeordnet werden und wird zusätzlich der in der Engstelle erzeugte Luftstrahl in einem flachen Winkel auf das Flusenfilter gelenkt. Um das Flusenfilter möglichst nahe an einer erzeugten Engstelle anzuordnen, kann es auch senkrecht zum Trockenluftkanal hinter einer Biegung angeordnet werden, wobei die Klappe davor an der Außenseite der Biegung angelenkt wird, so daß sie beim Einschwenken in den Trockenluftkanal am in der Biegung innen liegenden Ende des Flusenfilters die Engstelle erzeugt.In the simplest case, a simple flap can be used, which at one end is hinged to a wall of the dry air duct, in this case describes the free end when swinging into the dry air duct an arc and can create a constriction on the other side of the dry air duct, in which increases the flow rate when the dry air blower is switched on is so that the fluff can be blown away with the air jet generated. In order to keep the distance from this narrow point to the lint filter as small as possible hold, the filter can be installed at an angle, so that the front edge is close the constriction and the rear part of the filter is not the movement of the flap with special needs. The required angle of attack of the filter can be reduced by the lint filter is curved so that it is the trajectory of the free end essentially follows the flap. In this way, one edge of the lint filter immediately after the narrow point with the flap swung in and in addition the air jet generated in the constriction becomes flat Angle directed to the lint filter. To the lint filter as close as possible to a generated To arrange a narrow point, it can also be perpendicular to the dry air duct behind a bend can be arranged, the flap in front on the outside of the Bend is articulated so that when swung into the dry air duct on creates the constriction in the inside of the end of the fluff filter.

Um die Kapazität des Flusensammelbehälters zu erhöhen, können diese kompaktiert werden. Dies kann mechanisch durch Pressen geschehen oder durch eine Flüssigkeit. Bei Kondensationstrocknern kann dazu vorteilhafterweise die im Kondensator ohnehin anfallende Kondensflüssigkeit verwendet werden.In order to increase the capacity of the lint collection container, they can be compacted become. This can be done mechanically by pressing or by a Liquid. In the case of condensation dryers, this can advantageously be carried out in the condenser condensate is used anyway.

Weiterhin kann vorgesehen sein, daß bei einem erfindungsgemäßen Wäschetrockner die Gebläseleistung des Trockenluftgebläses zum Abblasen von Flusen kurzzeitig erhöht werden kann. Da dieser Vorgang nur kurz dauert, kann dabei auch eine Überschreitung der Nennbelastbarkeit des Gebläsemotors zugelassen werden.It can further be provided that in a tumble dryer according to the invention the blower output of the dry air blower for blowing off fluff for a short time can be increased. Since this process only takes a short time, one can also The nominal load capacity of the blower motor may be exceeded.

Weitere Einzelheiten, Merkmale und Vorteile der Erfindung ergeben sich aus der folgenden Beschreibung eines Ausführungsbeispiels eines erfindungsgemäßen Wäschetrockners unter Bezugnahme auf die Zeichnungen. Darin zeigen:

Fig. 1
eine schematische Schnittansicht durch einen erfindungsgemäßen Wäschetrockner,
Fig. 2
eine vergrößerte Darstellung einer Einrichtung des Wäschetrockners gemäß Fig. 1 zum Entfernen der Flusen in einer ersten Betriebsstellung,
Fig. 3
die Einrichtung zum Entfernen von Flusen gemäß Fig. 2 in einer zweiten Betriebsstellung,
Fig. 4 - 6
weitere Ausführungssformen der Einrichtung zum Entfernen von Flusen und
Fig. 7
eine Einrichtung zum Entfernen von Flusen gemäß einem weiteren Arbeitsprinzip.
Further details, features and advantages of the invention result from the following description of an embodiment of a clothes dryer according to the invention with reference to the drawings. In it show:
Fig. 1
2 shows a schematic sectional view through a clothes dryer according to the invention,
Fig. 2
1 shows an enlarged illustration of a device of the clothes dryer according to FIG. 1 for removing the fluff in a first operating position,
Fig. 3
the device for removing lint according to FIG. 2 in a second operating position,
Figs. 4-6
further embodiments of the device for removing lint and
Fig. 7
a device for removing lint according to a further working principle.

Der in Fig. 1 dargestellte Wäschetrockner 1 weist eine drehbar gelagerte Trommel 2 zur Aufnahme der zu trocknenden Wäsche 5 auf. Die Trommel 2 besitzt einen gelochten Trommelboden und auf der gegenüber liegenden Stirnseite eine Beschickungsöffnung, die mittels einer am Gehäuse des Wäschetrockners 1 angelenkten Tür 9 verschlossen werden kann. Mittels eines Gebläses 3 kann ein Trockenluftstrom erzeugt werden, der durch die Trommel 2, die Tür 9 und einen gekühlten Kondensator 6 zum Entfernen von Feuchtigkeit aus dem Trockenluftstrom verläuft und in Fig. 1 mit Pfeilen dargestellt ist. Vor der Trommel 2 ist zusätzlich eine Heizeinrichtung 4 zum Erwärmen des Trockenluftstroms vorgesehen.The tumble dryer 1 shown in Fig. 1 has a rotatably mounted drum 2 for receiving the laundry 5 to be dried. The drum 2 has one perforated drum base and a loading opening on the opposite end, the articulated by means of a to the housing of the dryer 1 Door 9 can be closed. A blower 3 can be used Dry air flow are generated by the drum 2, the door 9 and a cooled Condenser 6 for removing moisture from the dry air flow runs and is shown in Fig. 1 with arrows. In front of the drum 2 there is an additional one Heating device 4 is provided for heating the dry air flow.

Zusätzlich ist in Strömungsrichtung hinter der Trommel 2 ein Flusensieb 7 im Trockenluftkanal angeordnet, mit dem insbesondere abgelöste Wäscheflusen 11 zurückgehalten werden. Vor dem Flusenfilter 7 ist eine steuerbare Klappe 8 am Rand des Trockenluftkanals schwenkbar angelenkt. Die Klappe 8 kann so verschwenkt werden, daß sie nur noch einen schmalen Spalt an der der Anlenkung gegenüber liegenden Wand des Trockenluftkanals frei läßt. Das Flusenfilter 7 und die Klappe 8 sind so ausgelegt, daß das Flusenfilter 7 die Bewegung der Klappe 8 nicht behindert und daß die Klappe 8 in ihrer den Trockenluftkanal verengenden Stellung die Spalte möglichst nahe des Flusenfilters 7 erzeugen kann. Diese Anforderungen werden am besten mit einem schief zum Trockenluftstrom angeordneten Flusenfilter 7 erreicht, das wie im Ausführungsbeispiel auch kreisbogenförmig gekrümmt sein kann.In addition, a fluff filter 7 is in the flow direction behind the drum 2 Dry air duct arranged, with the detached fluff 11 in particular be held back. In front of the lint filter 7 is a controllable flap 8 on Edge of the dry air duct hinged. The flap 8 can be pivoted in this way be that there is only a small gap at the linkage leaves opposite wall of the dry air duct free. The lint filter 7 and the flap 8 are designed so that the fluff filter 7 the movement of the flap 8th not hindered and that the flap 8 in its constricting the dry air channel Position can produce the gap as close as possible to the lint filter 7. These requirements are best arranged with a skew to the dry air flow Lint filter 7 reached, which, as in the embodiment, also curved in a circular arc can be.

Weiterhin ist in der Wand des Trockenluftkanals eine Öffnung vorgesehen, die von der Klappe 8 verdeckt werden kann und zu einem Flusensammelbehälter 9 führt, der von außen zum Entleeren entnommen werden kann. Für die Steuerung des Wäschetrockners und seiner Bauelemente ist eine Steuereinrichtung 10 vorgesehen, die oben an der Vorderseite des Wäschetrockners 1 angeordnet ist.Furthermore, an opening is provided in the wall of the dry air duct the flap 8 can be covered and leads to a lint collecting container 9, which can be removed from the outside for emptying. For controlling the A control device 10 is provided for the laundry dryer and its components, which is arranged at the top of the front of the clothes dryer 1.

In Fig. 2 ist die Einrichtung zum Entfernen von Flusen in einer ersten Betriebsstellung während des gewöhnlichen Trockenbetriebs des Wäschetrockners 1 dargestellt. In dieser Stellung liegt die Klappe 8 an der Wand des Trockenluftkanals an, verschließt die zum Flusensammelbehälter 9 führende Öffnung und gibt das Flusenfilter 7 vollständig für den Trockenluftstrom frei. In dieser Phase sammeln sich die Flusen 11 am Flusenfilter 7 an.2 shows the device for removing lint in a first operating position shown during the normal drying operation of the clothes dryer 1. In this position, the flap 8 bears against the wall of the dry air duct, closes the opening leading to the lint collecting container 9 and gives the lint filter 7 completely free for the dry air flow. In this phase gather the lint 11 on the lint filter 7.

Am Ende des Trockenvorgangs wird von der Steuereinrichtung 10 eine Reinigungsphase eingeleitet, bei der die Klappe 8 verschwenkt wird, so daß sie die zum Flusensammelbehälter 9 führende Öffnung freigibt und den Trockenluftkanal bis auf einen Spalt versperrt, der nahe an einem Rand des Flusenfilters 7 gebildet wird. Dieser Zustand ist in Fig. 3 dargestellt. Das Gebläse 3 bleibt währenddessen eingeschaltet oder kann sogar kurzfristig über dessen Nennleistung hinaus angesteuert werden. Dadurch wird im von der Klappe 8 erzeugten Spalt ein scharfer Luftstrahl erzeugt, der die Flusen 11 vom Flusenfilter 7 wegbläst und in den Flusensammelbehälter 9 befördert. Dieser weist einen luftdurchlässigen Wandabschnitt auf, der möglichst weit von der Zuführöffnung im Trockenluftkanal entfernt sein und die hineingeblasenen Flusen 11 zurückhalten kann. Dazu kann beispielsweise der Flusensammelbehälter 9 im wesentlichen luftdicht in seiner Aufnahme im Wäschetrockner 1 angeordnet sein, wobei an seiner Vorderseite ein luftdurchlässiges Flusenfilter angeordnet ist. Die Reinigungsphase kann beispielsweise während einer Abkühlphase am Ende des Trockenprogramms erfolgen, wenn bei ausgeschalteter Heizeinrichtung 4 das Gebläse zum Abkühlen der Wäsche 5 noch eine Zeitlang eingeschaltet bleibt.At the end of the drying process, the control device 10 starts a cleaning phase initiated, in which the flap 8 is pivoted so that it to the Lint collection container 9 opens opening and the dry air duct up blocked a gap that is formed near an edge of the lint filter 7. This state is shown in Fig. 3. The fan 3 remains on during this time or can even be activated for a short time beyond its nominal power become. This creates a sharp jet of air in the gap created by the flap 8 generated, which blows the lint 11 away from the lint filter 7 and into the lint collecting container 9 promoted. This has an air-permeable wall section that as far as possible from the supply opening in the dry air duct and the blown into it Can hold back lint 11. For example, the lint collection container 9 essentially airtight in its inclusion in the tumble dryer 1, with an air-permeable lint filter on its front is arranged. The cleaning phase can, for example, during a cooling phase at the end of the drying program, if the heating is switched off 4 the blower for cooling the laundry 5 is switched on for a while remains.

In den Fig. 4 und 5 sind zwei weitere Ausführungsbeispiele für die Gestaltung des Trockenluftkanals dargestellt, um den von der Klappe 8 erzeugten Luftstrahl auf das Flusenfilter 7 zu leiten. Dabei kann ein Luftumlenkungsteil 12 an der Wand des Trockenluftkanals angeordnet werden, das den Luftstrahl flach auf das Flusenfilter 7 leitet. Zusätzlich kann der Trockenluftkanal vor der Engstelle aufgeweitet sein, um den Luftstrahl von außen flach gegen das Flusenfilter 7 zu leiten.4 and 5 are two further embodiments for the design of the Dry air channel shown to the air jet generated by the flap 8 on the To lead lint filter 7. Here, an air deflection part 12 on the wall of the Dry air duct can be arranged, the air jet flat on the lint filter 7 directs. In addition, the dry air duct can be widened in front of the constriction to guide the air jet flat against the lint filter 7 from the outside.

In Fig. 6 ist ein Ausführungsbeispiel mit einem ebenen und senkrecht zum Trockenluftkanal angeordneten Flusenfilter 7 dargestellt, bei dem das Flusenfilter 7 direkt hinter einer rechtwinkligen Umlenkung des Trockenluftstroms angeordnet ist. Die Klappe 8 ist an der Umlenkung außen angelenkt und kann nach innen geschwenkt werden. Der Spalt wird dabei ebenfalls an einem Rand des Flusenfilters 7 erzeugt, wobei der Luftstrahl das Flusenfilter 7 im wesentlichen parallel anströmt. Durch die von der Klappe 8 in der Wand des Trockenluftkanals freigegebenen Öffnung werden die Flusen 11 in diesem Fall am vorderen Ende in den Flusensammelbehälter 9 geleitet, bei dem der luftdurchlässige Wandabschnitt hier vorteilhafterweise am hinteren Ende angeordnet ist, so daß der Flusensammelbehälter 9 von hinten nach vorne mit Flusen 11 gefüllt werden kann. Die Aufnahme des Wäschetrockners 1 für den Flusensammelbehälter 9 muß dabei so ausgelegt sein, daß die hinten ausströmende Luft in das Geräteinnere und von dort in den Außenraum entweichen kann.In Fig. 6 is an embodiment with a flat and perpendicular to the dry air duct arranged lint filter 7 shown, in which the lint filter 7 directly is arranged behind a right-angled deflection of the dry air flow. The flap 8 is articulated on the outside of the deflection and can be pivoted inwards become. The gap is also at an edge of the lint filter 7 generated, the air jet flowing against the lint filter 7 substantially in parallel. Through the opening released by the flap 8 in the wall of the dry air duct in this case, the lint 11 is at the front end in the lint collecting container 9 passed, in which the air-permeable wall section here advantageously is arranged at the rear end so that the lint collecting container 9 from can be filled with fluff 11 at the back. The inclusion of the dryer 1 for the lint collecting container 9 must be designed so that the Air escaping from the rear into the inside of the device and from there to the outside can.

Ein anderes Beispiel für eine erfindungsgemäße Vorrichtung zum Abblasen der Flusen 11 ist in der Figur 7 dargestellt, bei der die Klappe 8 den Trockenluftkanal vollständig versperren kann und gleichzeitig eine erste Öffnung, durch die die gestaute Trockenluft entweichen kann, und eine zweite Öffnung freigibt, durch die die abgeblasenen Flusen 11 entfernt werden können. Dabei wird die durch die erste Öffnung entweichende gestaute Trockenluft mittels eines zusätzlichen Luftkanals und einer Düse von hinten gegen das Flusenfilter 7 geblasen. Der durch das Flusenfilter hindurch geblasene Luftstrahl hebt die Flusen 11 ab und befördert sie durch die zweite freigegebene Öffnung wie in den vorher beschriebenen Fällen zu dem Flusensammelbehälter 9.Another example of an inventive device for blowing off the Fluff 11 is shown in Figure 7, in which the flap 8 the dry air duct can completely block and at the same time a first opening through which the jammed Dry air can escape, and a second opening through which the Blown off fluff 11 can be removed. This is done by the first Dammed dry air escaping through the opening by means of an additional air duct and a nozzle blown against the lint filter 7 from behind. The one through the lint filter air jet blown through lifts the lint 11 and conveys it through the second released opening as in the previously described cases the lint collecting container 9.

Claims (8)

Wäschetrockner (1) mit einem Trockenluftgebläse (3), einem in einem Trockenluftkanal angeordneten Flusenfilter (7), einer Einrichtung (8) zum Abblasen von Flusen (11) von dem Flusenfilter (7) und einer Einrichtung zum Entfernen von abgeblasenen Flusen, dadurch gekennzeichnet, daß er Einrichtungen (8) zum Verringern oder Verschließen des Querschnitts des Trockenluftkanals und zum Erzeugen eines Luftstrahls zum Abblasen von Flusen (11) bei eingeschaltetem Trockenluftgebläse (3) aufweist.Laundry dryer (1) with a dry air blower (3), a lint filter (7) arranged in a dry air duct, a device (8) for blowing off lint (11) from the lint filter (7) and a device for removing blown off lint, characterized that it has means (8) for reducing or closing the cross section of the dry air duct and for generating an air jet for blowing off fluff (11) when the dry air blower (3) is switched on. Wäschetrockner nach Anspruch 1, dadurch gekennzeichnet, daß von der Einrichtung (8) zum Verringern oder Verschließen des Querschnitts des Trockenluftkanals auch der Luftstrahl erzeugt werden kann.Clothes dryer according to claim 1, characterized in that the device (8) to reduce or close the cross section of the dry air duct the air jet can also be generated. Wäschetrockner nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß er eine Luftleitvorrichtung (12) aufweist, mit der bei verringertem oder verschlossenem Trockenluftkanalquerschnitt ein erzeugter Luftstrahl mit einem flachen Auftreffwinkel auf das Flusenfilter (7) geleitet werden kann.Clothes dryer according to claim 1 or 2, characterized in that it is a Air guiding device (12), with the reduced or closed Dry air duct cross section a generated air jet with a flat impact angle can be directed to the lint filter (7). Wäschetrockner nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß er eine Einrichtung aufweist, mit der abgeblasene und entfernte Flusen (11) in einen Sammelbehälter (9) befördert werden können.Clothes dryer according to one of claims 1 to 3, characterized in that he has a device with the blown and removed fluff (11) in one Collection container (9) can be transported. Wäschetrockner nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß er eine Signalvorrichtung zum Überwachen des Füllgrads des Sammelbehälters (9) aufweist. Clothes dryer according to one of claims 1 to 4, characterized in that he a signal device for monitoring the filling level of the collecting container (9). Wäschetrockner nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß er zum Verringern oder Verschließen des Querschnitts des Trockenluftkanals eine schwenkbare Klappe (8) aufweist, die in einer den Querschnitt des Trockenluftkanals verringernden oder verschließenden Stellung eine Öffnung in der Wand des Trockenluftkanals freigibt, durch die abgeblasene Flusen (11) entfernt werden können.Clothes dryer according to one of claims 1 to 5, characterized in that he to reduce or close the cross section of the dry air duct has pivotable flap (8) in a cross section of the dry air duct reducing or closing position an opening in the wall of the Dry air duct releases through which blown off fluff (11) are removed can. Wäschetrockner nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Einrichtung zum Entfernen von abgeblasenen Flusen (11) mit der Unterdruckseite des Trockenluftgebläses (3) verbunden werden kann.Clothes dryer according to one of claims 1 to 6, characterized in that the device for removing blown fluff (11) with the vacuum side of the dry air blower (3) can be connected. Wäschetrockner nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Gebläseleistung des Trockenluftgebläses (3) zum Abblasen von Flusen (11) kurzfristig erhöht werden kann.Clothes dryer according to one of claims 1 to 7, characterized in that the blower output of the dry air blower (3) for blowing off fluff (11) can be increased at short notice.
EP00123244A 1999-11-02 2000-10-26 Laundry drier with self-cleaning lint filter Expired - Lifetime EP1098028B1 (en)

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US7681420B2 (en) 2004-10-08 2010-03-23 Lg Electronics Inc. Washing machine and method of controlling the same
EP1645674A1 (en) * 2004-10-08 2006-04-12 LG Electronics, Inc. Washing machine and method of controlling the same
US7913415B2 (en) 2005-11-16 2011-03-29 Bsh Bosch Und Siemens Hausgeraete Gmbh Device for drying laundry by means of a current of air
US9139949B2 (en) 2005-11-16 2015-09-22 Bsh Hausgeraete Gmbh Device for drying laundry by means of a current of air
US8001701B2 (en) 2005-11-16 2011-08-23 Bsh Bosch Und Siemens Hausgeraete Gmbh Device for drying laundry by means of a current of air
WO2007119989A3 (en) * 2006-04-17 2008-01-17 Lg Electronics Inc Dryer and method of controlling for the same
US8156659B2 (en) 2007-02-20 2012-04-17 Lg Electronics Inc. Filter cleaning apparatus and ductless dryer implementing the same
US9347171B2 (en) 2007-10-12 2016-05-24 BSH Haugeräte GmbH Method and device for cleaning a component, particularly an evaporator of a condenser device, and washer/dryer or dryer having such a device
US9512554B2 (en) 2008-07-11 2016-12-06 BSH Hausgeräte GmbH Device for cleaning a component, in particular an evaporator of a condenser device
EP2194183A3 (en) * 2008-12-02 2010-09-01 BSH Bosch und Siemens Hausgeräte GmbH Dryer with recirculation component and method for its operation
EP2196577A1 (en) * 2008-12-11 2010-06-16 BSH Bosch und Siemens Hausgeräte GmbH Dryer with recirculation component and method for its operation
WO2010102892A1 (en) * 2009-03-13 2010-09-16 BSH Bosch und Siemens Hausgeräte GmbH Laundry drying unit having a lint screen arranged within a process air circuit and a method for operating said laundry drying unit
CN102348843A (en) * 2009-03-13 2012-02-08 Bsh博世和西门子家用电器有限公司 Laundry drying unit having a lint screen arranged within a process air circuit and a method for operating said laundry drying unit
EA018351B1 (en) * 2009-03-13 2013-07-30 Бсх Бош Унд Сименс Хаусгерете Гмбх Laundry drying unit having a component to be cleaned arranged within a process air circuit and a method for dispensing a cleaning fluid to said component
CN102348843B (en) * 2009-03-13 2013-10-09 Bsh博世和西门子家用电器有限公司 Laundry drying unit having a lint screen arranged within a process air circuit and a method for operating said laundry drying unit
EP2280115A1 (en) * 2009-07-30 2011-02-02 BSH Bosch und Siemens Hausgeräte GmbH Clothes washing device with drying procedure and method of controlling the same
CN101988260B (en) * 2009-07-30 2013-06-12 博西华电器（江苏）有限公司 Clothing drying equipment having drying program and control method thereof
EP2333148A3 (en) * 2009-11-20 2013-06-05 BSH Bosch und Siemens Hausgeräte GmbH Method for cleaning process air in a laundry dryer and laundry dryer
EP3246455A1 (en) * 2016-05-17 2017-11-22 Electrolux Appliances Aktiebolag Laundry treating machine comprising a removable de-fluff filter
EP3674476A1 (en) * 2018-12-28 2020-07-01 Whirlpool Corporation Separation of lint from an exhaust airstream within a laundry appliance
US11519129B2 (en) 2018-12-28 2022-12-06 Whirlpool Corporation Separation of lint from an exhaust airstream within a laundry appliance
CN110686480A (en) * 2019-09-20 2020-01-14 溆浦绿之然农业发展有限公司 Grain drying machine
WO2023006126A1 (en) * 2021-07-27 2023-02-02 青岛海尔洗衣机有限公司 Clothes dryer and air duct thereof having lint filter assembly

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DE19952751B4 (en) 2009-01-02
ES2223363T3 (en) 2005-03-01
DE50007189D1 (en) 2004-09-02
ATE272141T1 (en) 2004-08-15
EP1098028A3 (en) 2002-05-15
DE19952751A1 (en) 2001-06-21
EP1098028B1 (en) 2004-07-28

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