EP1293594B1 - laundry dryer with drum - Google Patents

laundry dryer with drum Download PDF

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Publication number
EP1293594B1
EP1293594B1 EP02015398A EP02015398A EP1293594B1 EP 1293594 B1 EP1293594 B1 EP 1293594B1 EP 02015398 A EP02015398 A EP 02015398A EP 02015398 A EP02015398 A EP 02015398A EP 1293594 B1 EP1293594 B1 EP 1293594B1
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EP
European Patent Office
Prior art keywords
drum
laundry
honeycomb
laundry dryer
drum shell
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.)
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EP02015398A
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German (de)
French (fr)
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EP1293594A1 (en
Inventor
Wolfgang Hellhake
Wolfhard Jording
Wilfried Pauleickhoff
Hans-Christoph Schröder
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Miele und Cie KG
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Miele und Cie KG
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Publication of EP1293594A1 publication Critical patent/EP1293594A1/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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • 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
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • D06F58/04—Details 

Definitions

  • the invention relates to a tumble dryer with a drum, which has a perforated drum base and a feed opening and a connected to the drum base drum shell, the drum shell surface is at least partially formed with the drum outer embossments.
  • Such a tumble dryer is known from DE 197 31 666 A1.
  • the drum shell has in this dryer imprints of shallow depth, which is formed in the form of circumferentially extending grooves. Such grooves or embossing to increase the stability of the drum, thereby enabling a significant material savings and weight reduction.
  • Wäschemit commentary are arranged on the inside of the drum shell.
  • a clothes dryer is also described in which a plurality of gently rounded drivers are formed as out of the drum shell shaped coins.
  • an embossing formed as a running surface for the drive belt, which divides the drivers into two sections, so that a continuous running surface for the drive belt is formed.
  • Drums of washing machines or washing driers are usually made of sheet metal constructions. Because of the high spin speeds up to 1600 rpm, the drum construction is subject to great demands in terms of strength, dimensional stability and rigidity. From DE 44 37 986 A1 it is known to provide the sheet metal, from which such drums are made, to increase its strength with arch structures.
  • WO 97/39846 A1 discloses a process for the surface-sparing, stiffening structuring of thin material webs.
  • the webs are supported by support elements on a roller and acted upon by an elastic, for example. Rubberized pressure roller with an overpressure, so that Beulfalten set free and provided the webs with a Beul Modell.
  • the method described in WO 97/39846 is a further development of methods for Beul Modell réelle, as described in DE 25 57 215 A1 and DE 43 11 978 C1.
  • a washing machine or a washer-dryer with a drum rotatably mounted horizontally in a tub with a jacket and two cover surfaces in which the jacket is made of a metal sheet which is at least partially provided with a directed towards the drum interior arch structure is, and are arranged in the jacket in the holes on the outer edge of the drum directed edge contours of the curvature.
  • Household clothes dryers are nowadays usually a so-called smooth wall drum with embossed and / or inserted Wäschemit supportiven.
  • the evaporation heat required for the drying process for the water loading of the laundry is transferred convectively via the dryer process air. From the laundry surface, the evaporated water diffuses into the process air stream and is transported away. So that all surfaces of the laundry in the drum get in contact with the process air, the drum is rotated so fast that the centrifugal force entrains the laundry approximately until shortly before the highest point of the drum.
  • the laundry items are pressed with the vectorial force of centrifugal and gravitational force to the drum shell.
  • the temperature at the drum shell is lower than the evaporation temperature due to the external convective heat loss.
  • the invention thus raises the problem of designing a tumble dryer with a drum with increased stability such that the drum shell surface forms a minimum contact surface for the laundry and at the same time a good entrainment in the rotation of the drum is achieved without formation of Wäscheetzrolplin.
  • the drum shell is wholly or at least partially formed with a honeycomb-shaped arch structure whose honeycomb base surfaces are shaped directed towards the outside of the drum.
  • honeycomb surfaces and honeycomb edges form over the drum shell air cushions on which the laundry is hollow.
  • the air cushions are used for thermal insulation.
  • a portion of the laundry moisture can diffuse into the air cushion. When the laundry is detached from the wall, the moisture is removed from the process air. This shortens drying times and reduces electrical energy.
  • the inventive design of the drum shell with embossed honeycomb base surfaces and the formation of Lucaspoistem the two-sided mass transfer of the laundry with the process air is possible, whereby the uniformity of the dry result is further improved.
  • a further advantage lies in the improved entrainment of the laundry items over the points or edges of the edges of the stacking, outwardly embossed honeycomb facing the interior of the drum.
  • the increased surface pressure at the Völbungsr causes a kind of positive locking, through which the laundry is better taken, so that even can be dispensed with the use of driver ribs.
  • the number and / or the size of the driver is reduced.
  • drum shell with non-embossed areas (claim 2), so that z. B. a tread for the drum drive belt and / or the residual moisture scan is formed.
  • at least one non-embossed region may be provided for the arrangement of driving ribs.
  • FIG. 1 shows a clothes dryer in the front view with the door open and looking into the drum.
  • the drum shell (1) has a honeycomb structure (2).
  • the honeycomb structure (2) is substantially enlarged here and only partially shown.
  • the drum is formed with at least one driving rib (3). Due to the embossing or shaping of the honeycomb structure (2) formed on the drum shell (1), according to a further exemplary embodiment of the invention, it is also possible to dispense with catch ribs (3) for the laundry.
  • FIG. 2 shows a section with a view of the outside of the drum shell (1) as a detail in perspective with the honeycomb structure (2) on the drum shell (1).
  • the drum shell (1) is formed with a honeycomb structure (2) whose honeycomb surfaces (4) are stamped or shaped towards the outside.
  • the drum shell (1) can have non-structured regions (5) which serve as a smooth running surface for the drive belt (6) shown in FIG. 4 or as a fastening region for driving ribs (3).
  • Figure 3 shows a section of the drum shell (1) with a view into the drum interior.
  • the curvature edges (7) of the honeycomb surfaces (4) which adjoin one another act as entrainment elements and entrainment points for the items of laundry (8) shown in FIG. 5 in the rotating drum.
  • Figure 4 shows the drum shell (1) in partial section with representation of the drive belt (6), which runs on the outwardly directed honeycomb surfaces (4).
  • a sound absorbing tape is provided on the drum shell as a support for the drum drive belt.
  • FIG. 5 shows a section through the honeycomb structure (2) fragmentary according to detail X.
  • a laundry on the drum shell (1) fitting (8) is shown.
  • the vectorial force acting on the imaginary center of mass (9) resulting from centrifugal and gravity is shown in the drum rotation direction.
  • the contact points of the laundry items (8) with the drum shell (1) are reduced to the small areas or points or edges of the concatenated curvature edges (7) of the embossed outside honeycomb surfaces (4).
  • honeycomb surfaces (4) and Völbungsr selectedn (7) form over the drum shell (1) air cushion (11) on which the laundry items (8) are hollow.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Drying Of Solid Materials (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

The washer-dryer drum has a perforated drum bottom as well as a loading opening and a drum casing (1) that is joined to the drum floor. The drum casing surface is at least partly provided with indentations in the form of a honeycomb curvature structure (2) whose honeycomb surfaces are formed to face the outside of the drum.

Description

Die Erfindung betrifft einen Wäschetrockner mit einer Trommel, welche einen gelochten Trommelboden sowie eine Beschickungsöffnung und einen mit dem Trommelboden verbundenen Trommelmantel aufweist, dessen Trommelmantelfläche zumindestens teilweise mit zum Trommeläußeren gerichteten Prägungen ausgebildet ist.The invention relates to a tumble dryer with a drum, which has a perforated drum base and a feed opening and a connected to the drum base drum shell, the drum shell surface is at least partially formed with the drum outer embossments.

Ein derartiger Wäschetrockner ist aus der DE 197 31 666 A1 bekannt. Der Trommelmantel weist bei diesem Wäschetrockner Prägungen von geringer Tiefe auf, die in Form von in Umfangsrichtung verlaufenden Rillen ausgebildet ist. Derartige Rillen bzw. Prägungen sollen die Stabilität der Trommel erhöhen und dabei eine wesentliche Materialeinsparung und Gewichtsreduzierung ermöglichen. An der Innenseite des Trommelmantels sind Wäschemitnehmer angeordnet.Such a tumble dryer is known from DE 197 31 666 A1. The drum shell has in this dryer imprints of shallow depth, which is formed in the form of circumferentially extending grooves. Such grooves or embossing to increase the stability of the drum, thereby enabling a significant material savings and weight reduction. On the inside of the drum shell Wäschemitnehmer are arranged.

In der DE 41 31 005 A1 ist außerdem ein Wäschetrockner beschrieben, bei dem mehrere sanft gerundete Mitnehmer als aus dem Trommelmantel heraus geformte Prägungen ausgebildet sind. In Umfangsrichtung ist außerdem eine Prägung als Lauffläche für den Antriebsriemen ausgebildet, die die Mitnehmer in zwei Abschnitte teilt, so dass eine durchgehende Lauffläche für den Antriebsriemen entsteht. Mit dieser Ausbildung der Trommel und Anordnung der Mitnehmer soll ein möglichst großes Trommelvolumen erzielt werden.In DE 41 31 005 A1, a clothes dryer is also described in which a plurality of gently rounded drivers are formed as out of the drum shell shaped coins. In the circumferential direction is also an embossing formed as a running surface for the drive belt, which divides the drivers into two sections, so that a continuous running surface for the drive belt is formed. With this design of the drum and arrangement of the driver the largest possible drum volume should be achieved.

Aus der DE 196 03 710 A1 ist ein Laugenbehälter für ein wasserführendes Haushaltgerät bekannt, bei dem der Mantel zur Geräuschminimierung mit Prägungen versehen ist.From DE 196 03 710 A1 a tub for a water-conducting domestic appliance is known in which the jacket is provided for minimizing noise with imprints.

Trommeln von Waschautomaten oder Waschtrocknem bestehen in der Regel aus Blechkonstruktionen. Wegen der hohen Schleuderdrehzahlen bis zu 1600 Upm werden an die Trommelkonstruktion große Anforderungen bezüglich Festigkeit, Formhaltigkeit und Steifigkeit gestellt. Aus der DE 44 37 986 A1 ist es bekannt, das Blech, aus dem solche Trommeln gefertigt werden, zur Erhöhung seiner Festigkeit mit Wölbstrukturen zu versehen.Drums of washing machines or washing driers are usually made of sheet metal constructions. Because of the high spin speeds up to 1600 rpm, the drum construction is subject to great demands in terms of strength, dimensional stability and rigidity. From DE 44 37 986 A1 it is known to provide the sheet metal, from which such drums are made, to increase its strength with arch structures.

Aus der WO 97/39846 A1 ist ein Verfahren zur oberflächenschonenden, versteifenden Strukturierung dünner Materialbahnen bekannt. Dabei werden die Materialbahnen durch Stützelemente auf einer Walze abgestützt und durch eine elastische, bspw. gummierte Andruckrolle mit einem Überdruck beaufschlagt, so dass sich Beulfalten frei einstellen und die Bahnen mit einer Beulstruktur versehen. Das in der WO 97/39846 beschriebene Verfahren ist eine Weiterentwicklung von Verfahren zur Beulstrukturierung, wie sie in der DE 25 57 215 A1 und der DE 43 11 978 C1 beschrieben sind.WO 97/39846 A1 discloses a process for the surface-sparing, stiffening structuring of thin material webs. The webs are supported by support elements on a roller and acted upon by an elastic, for example. Rubberized pressure roller with an overpressure, so that Beulfalten set free and provided the webs with a Beulstruktur. The method described in WO 97/39846 is a further development of methods for Beulstrukturierung, as described in DE 25 57 215 A1 and DE 43 11 978 C1.

Aus der WO 98/20195 A1 ist eine Waschmaschine oder ein Waschtrockner mit einer in einem Laugenbehälter horizontal drehbar gelagerten Trommel mit einem Mantel und zwei Deckflächen bekannt, bei der der Mantel aus einem Blech gefertigt ist, welches mindestens teilweise mit einer zum Trommelinneren gerichteten Wölbstruktur versehenen ist, und bei der im Mantel Löcher auf den zum Trommeläußeren gerichteten Randkonturen der Wölbung angeordnet sind.From WO 98/20195 A1, a washing machine or a washer-dryer with a drum rotatably mounted horizontally in a tub with a jacket and two cover surfaces is known, in which the jacket is made of a metal sheet which is at least partially provided with a directed towards the drum interior arch structure is, and are arranged in the jacket in the holes on the outer edge of the drum directed edge contours of the curvature.

Haushaltwäschetrockner weisen heute übficherweise eine sogenannte Glattwandtrommel mit eingeprägten und/oder eingesetzten Wäschemitnehmern auf. Die für den Trockenprozess erforderliche Verdunstungswärme für die Wasserbeladung der Wäsche wird konvektiv über die Trocknerprozessluft übertragen. Von der Wäscheoberfläche diffundiert das verdampfte Wasser in den Prozessluftstrom und wird abtransportiert. Damit alle Oberflächen der Wäsche in der Trommel mit der Prozessluft Kontakt bekommen, wird die Trommel so schnell gedreht, das durch die Fliehkraft die Wäschestücke ungefähr bis kurz vor dem höchsten Punkt der Trommel mitgenommen wird. Dabei werden die Wäschestücke mit der vektoriellen Kraft aus Flieh- und Schwerkraft an den Trommelmantel gedrückt. Die Temperatur am Trommelmantel ist bedingt durch den äußeren konvektiven Wärmeverlust niedriger als die Verdunstungstemperatur. Da die Wäsche großflächig am Trommelmantel anliegt, kommt es während der Kontaktzeit der Wäsche mit dem Trommelmantel zu lokalen Abkühlungseffekten und damit zur einseitigen Unterbrechung der Verdunstung. Die Folge ist eine Verlängerung der Trocknungszeit mit der damit verbundenen erhöhten elektrischen Energieaufnahme. Weiterhin wird die Wäsche ungleichmäßig getrocknet. Um eine hohe Stabilität der Trommel zu erreichen, müssen derartige Trommeln außerdem aus Blechmaterial mit entsprechend höher ausgelegter Wandstärke gefertigt werden.Household clothes dryers are nowadays usually a so-called smooth wall drum with embossed and / or inserted Wäschemitnehmern. The evaporation heat required for the drying process for the water loading of the laundry is transferred convectively via the dryer process air. From the laundry surface, the evaporated water diffuses into the process air stream and is transported away. So that all surfaces of the laundry in the drum get in contact with the process air, the drum is rotated so fast that the centrifugal force entrains the laundry approximately until shortly before the highest point of the drum. The laundry items are pressed with the vectorial force of centrifugal and gravitational force to the drum shell. The temperature at the drum shell is lower than the evaporation temperature due to the external convective heat loss. Since the laundry rests on a large area on the drum shell, it comes during the contact time of the laundry with the drum shell to local cooling effects and thus unilateral interruption of evaporation. The result is an extension of the drying time with the associated increased electrical energy consumption. Furthermore, the laundry is dried unevenly. In order to achieve a high stability of the drum, such drums must also be made of sheet material with a correspondingly higher designed wall thickness.

Zwar ist eine verbesserte Stabilität der Trommel bei vergleichsweise geringeren Wandstärken mit einem wölbstrukturiertem Trommelmantel, wie z.B. aus der WO 98/20195 A1 bekannt, erreichbar. Eine weitere Verbesserung des Trockenergebnisses gegenüber der oben beschriebenen Trommelanordnung ist mit einem derartig strukturierten Trommelmantel jedoch noch nicht möglich, da bei dieser Ausführung die Wabenflächen der Wölbstruktur nach innen in die Trommel gerichtet sind und damit auch eine vergleichsweise große Kontaktfläche für die Wäschestücke bilden. Außerdem ist die Mitnahme der Wäschestücke über die Wabenfläche bei drehender Trommel nicht optimal.Although an improved stability of the drum with comparatively smaller wall thicknesses with a vault-structured drum shell, such. known from WO 98/20195 A1, reachable. However, a further improvement of the drying result compared with the drum arrangement described above is not possible with such a structured drum casing, since in this embodiment the honeycomb surfaces of the arch structure are directed inwardly into the drum and thus also form a comparatively large contact surface for the laundry items. In addition, the entrainment of the laundry items on the honeycomb surface with rotating drum is not optimal.

Der Erfindung stellt sich somit das Problem, einen Wäschetrockner mit einer Trommel mit erhöhter Stabilität derart auszubilden, dass die Trommelmantelfläche eine geringstmögliche Kontaktfläche für die Wäsche bildet und gleichzeitig eine gute Wäschemitnahme bei der Drehung der Trommel ohne Bildung von Wäscheaufrollern erreicht wird.The invention thus raises the problem of designing a tumble dryer with a drum with increased stability such that the drum shell surface forms a minimum contact surface for the laundry and at the same time a good entrainment in the rotation of the drum is achieved without formation of Wäscheaufrollern.

Erfindungsgemäß wird dieses Problem durch einen Wäschetrockner mit einer Trommel mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den nachfolgenden Unteransprüchen.According to the invention this problem is solved by a tumble dryer with a drum having the features of claim 1. Advantageous embodiments and further developments of the invention will become apparent from the following subclaims.

Die mit der Erfindung erreichbaren Vorteile bestehen insbesondere darin, dass der Trommelmantel ganz oder zumindestens teilweise mit einer wabenförmig ausgebildeten Wölbstruktur ausgebildet ist, deren Wabengrundflächen zum Trommeläußeren gerichtet geprägt sind. Dadurch reduzieren sich die Kontaktstellen der Wäsche auf die kleinen Flächen bzw. Punkte oder Kanten der sich aneinanderreihenden Ränder der nach außen geprägten Wabenflächen. Zwischen Wabenflächen und Wabenrändern bilden sich über den Trommelmantel Luftpolster, auf denen die Wäsche hohl liegt. Die Luftpolster dienen zur Wärmeisolierung. Außerdem kann ein Teil der Wäschefeuchte in das Luftpolster hineindiffundieren. Beim Lösen der Wäsche von der Wand wird die Feuchtigkeit von der Prozessluft abgeführt. Dadurch werden die Trockenzeiten verkürzt und damit auch die elektrische Energie reduziert. Durch die erfindungsgemäße Ausbildung des Trommelmantels mit nach außen geprägten Wabengrundflächen und die Bildung von Luftpoistem wird der zweiseitige Stoffaustausch der Wäschestücke mit der Prozessluft möglich, wodurch die Gleichmäßigkeit des Trockenergebnisses weiter verbessert wird.The achievable with the present invention consist in particular in that the drum shell is wholly or at least partially formed with a honeycomb-shaped arch structure whose honeycomb base surfaces are shaped directed towards the outside of the drum. This reduces the contact points of the laundry on the small areas or points or edges of the contiguous edges of the embossed honeycomb surfaces outwards. Between honeycomb surfaces and honeycomb edges form over the drum shell air cushions on which the laundry is hollow. The air cushions are used for thermal insulation. In addition, a portion of the laundry moisture can diffuse into the air cushion. When the laundry is detached from the wall, the moisture is removed from the process air. This shortens drying times and reduces electrical energy. The inventive design of the drum shell with embossed honeycomb base surfaces and the formation of Luftpoistem the two-sided mass transfer of the laundry with the process air is possible, whereby the uniformity of the dry result is further improved.

Ein weiterer Vorteil liegt in der verbesserten Mitnahme der Wäschestücke über die Punkte oder Kanten der zum Trommelinneren gerichteten Ränder der sich aneinanderreihenden, nach außen geprägten Waben. Die erhöhte Flächenpressung an den Wölbungsrändern bewirkt eine Art Formschluss, durch den die Wäsche besser mitgenommen wird, so dass dadurch sogar auf den Einsatz von Mitnehmerrippen verzichtet werden kann. Alternativ ist die Zahl und/oder die Größe der Mitnehmer reduziert.A further advantage lies in the improved entrainment of the laundry items over the points or edges of the edges of the stacking, outwardly embossed honeycomb facing the interior of the drum. The increased surface pressure at the Völbungsrändern causes a kind of positive locking, through which the laundry is better taken, so that even can be dispensed with the use of driver ribs. Alternatively, the number and / or the size of the driver is reduced.

In einer Weiterbildung der Erfindung ist vorgesehen, den Trommelmantel mit nicht geprägten Bereichen auszubilden (Anspruch 2), so dass z. B. eine Lauffläche für den Trommelantriebsriemen und/oder die Restfeuchtabtastung gebildet wird. Außerdem kann mindestens ein nichtgeprägter Bereich für die Anordnung von Mitnehmerrippen vorgesehen sein.In a further development of the invention is intended to form the drum shell with non-embossed areas (claim 2), so that z. B. a tread for the drum drive belt and / or the residual moisture scan is formed. In addition, at least one non-embossed region may be provided for the arrangement of driving ribs.

In einer Weiterbildung der Erfindung ist vorgesehen, im Bereich des Riemens den Trommelmantel mit einem geräuschdämpfenden Band auszubilden (Anspruch 3). In dieser Maßnahme liegt der Vorteil, dass der Trommelantriebsriemen auch auf den gewölbten Wabenflächen geräuschärmer abläuft.In one embodiment of the invention, it is provided to form the drum shell with a noise-damping tape in the region of the belt (claim 3). In this measure, there is the advantage that the drum drive belt runs quieter on the curved honeycomb surfaces.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen rein schematisch dargestellt und wird nachfolgend näher beschrieben. Es zeigt:

Figur 1
Die Frontansicht eines Wäschetrockners mit geöffneter Tür und Blick in die Trommel,
Figur 2
einen Ausschnitt mit Blick auf die Außenseite des Trommelmantels als Einzelheit in perspektivischer Darstellung,
Figur 3
einen Ausschnitt des Trommelmantels mit Blick in das Trommelinnere als Einzelheit in perspektivischer Darstellung,
Figur 4
den Trommelmantel im Teilschnitt mit Darstellung des Antriebsriemens,
Figur 5
die Wabenstruktur des Trommelmantels gemäß Einzelheit X.
An embodiment of the invention is shown purely schematically in the drawings and will be described in more detail below. It shows:
FIG. 1
The front view of a tumble dryer with open door and view into the drum,
FIG. 2
a detail with a view of the outside of the drum shell as a detail in perspective view,
FIG. 3
a detail of the drum shell looking into the interior of the drum as a detail in perspective view,
FIG. 4
the drum shell in partial section with representation of the drive belt,
FIG. 5
the honeycomb structure of the drum shell according to detail X.

Figur 1 zeigt einen Wäschetrockner in der Frontansicht mit geöffneter Tür und Blick in die Trommel. Der Trommelmantel (1) weist eine Wabenstruktur (2) auf. Die Wabenstruktur (2) ist hier wesentlich vergrößert und nur teilweise dargestellt. In diesem Ausführungsbeispiel der Erfindung ist die Trommel mit mindestens einer Mitnehmerrippe (3) ausgebildet. Aufgrund der am Trommelmantel (1) ausgebildeten Prägungen oder Formung der Wabenstruktur (2) kann gemäß einem weiteren Ausführungsbeispiel der Erfindung aber auch auf Mitnehmerrippen (3) für die Wäsche verzichtet werden.Figure 1 shows a clothes dryer in the front view with the door open and looking into the drum. The drum shell (1) has a honeycomb structure (2). The honeycomb structure (2) is substantially enlarged here and only partially shown. In this embodiment of the invention, the drum is formed with at least one driving rib (3). Due to the embossing or shaping of the honeycomb structure (2) formed on the drum shell (1), according to a further exemplary embodiment of the invention, it is also possible to dispense with catch ribs (3) for the laundry.

Figur 2 zeigt einen Ausschnitt mit Blick auf die Außenseite des Trommelmantels (1) als Einzelheit in perspektivischer Darstellung mit der Wabenstruktur (2) am Trommelmantel (1). Der Trommelmantel (1) ist mit einer Wabenstruktur (2) ausgebildet, deren Wabenflächen (4) nach außen gerichtet geprägt bzw. geformt sind. Der Trommelmantel (1) kann nicht strukturierte Bereiche (5) aufweisen, die als glatte Lauffläche für den in Figur 4 dargestellten Antriebsriemen (6) oder als Befestigungsbereich für Mitnehmerrippen (3) dienen.Figure 2 shows a section with a view of the outside of the drum shell (1) as a detail in perspective with the honeycomb structure (2) on the drum shell (1). The drum shell (1) is formed with a honeycomb structure (2) whose honeycomb surfaces (4) are stamped or shaped towards the outside. The drum shell (1) can have non-structured regions (5) which serve as a smooth running surface for the drive belt (6) shown in FIG. 4 or as a fastening region for driving ribs (3).

Figur 3 zeigt einen Ausschnitt des Trommelmantels (1) mit Blick in das Trommelinnere. Die Wölbungsränder (7) der sich aneinanderreihenden Wabenflächen (4) wirken als Mitnehmerelemente und Mitnahmepunkte für die in Figur 5 dargestellten Wäschestücke (8) in der drehenden Trommel.Figure 3 shows a section of the drum shell (1) with a view into the drum interior. The curvature edges (7) of the honeycomb surfaces (4) which adjoin one another act as entrainment elements and entrainment points for the items of laundry (8) shown in FIG. 5 in the rotating drum.

Figur 4 zeigt den Trommelmantel (1) im Teilschnitt mit Darstellung des Antriebsriemens (6), der auf den nach außen gerichteten Wabenflächen (4) abläuft. In einem nicht dargestellten Ausführungsbeispiel ist ein geräuschdämmendes Band auf dem Trommelmantel als Unterlage für den Trommelantriebsriemen vorgesehen.Figure 4 shows the drum shell (1) in partial section with representation of the drive belt (6), which runs on the outwardly directed honeycomb surfaces (4). In an embodiment, not shown, a sound absorbing tape is provided on the drum shell as a support for the drum drive belt.

Figur 5 zeigt einen Schnitt durch die Wabenstruktur (2) ausschnittsweise gemäß Einzelheit X. In dieser Figur ist ein am Trommelmantel (1) anliegendes Wäschestück (8) dargestellt. Die auf den gedachten Massenschwerpunkt (9) einwirkende vektorielle Kraft resultierend aus Flieh- und Schwerkraft ist bei dargestellter Trommeldrehrichtung eingezeichnet. Die Kontaktstellen der Wäschestücke (8) mit dem Trommelmantel (1) sind auf die kleinen Flächen bzw. Punkte oder Kanten der sich aneinanderreihenden Wölbungsränder (7) der nach außen geprägten Wabenflächen (4) reduziert. Zwischen Wabenflächen (4) und Wölbungsrändern (7) bilden sich über den Trommelmantel (1) Luftpolster (11), auf denen die Wäschestücke (8) hohl liegen.Figure 5 shows a section through the honeycomb structure (2) fragmentary according to detail X. In this figure, a laundry on the drum shell (1) fitting (8) is shown. The vectorial force acting on the imaginary center of mass (9) resulting from centrifugal and gravity is shown in the drum rotation direction. The contact points of the laundry items (8) with the drum shell (1) are reduced to the small areas or points or edges of the concatenated curvature edges (7) of the embossed outside honeycomb surfaces (4). Between honeycomb surfaces (4) and Völbungsrändern (7) form over the drum shell (1) air cushion (11) on which the laundry items (8) are hollow.

Claims (4)

  1. Laundry dryer having a drum which has a perforated drum floor as well as a loading opening and a drum casing (1) connected to the drum floor, the surface of this drum casing being at least partially designed with indentations oriented towards the outside of the drum,
    characterised in that
    the indentations are arranged in the form of a curved honeycomb structure (2), the honeycomb base surfaces (4) of which are formed oriented towards the outside of the drum, and of which the adjoining edge contours of the honeycomb structures are oriented with the edges of their curvatures (7) towards the inside of the drum and thus form baffles for the laundry in the rotating drum.
  2. Laundry dryer having a drum according to claim 1,
    characterised in that
    the drum casing (1) is designed with at least one non-structured area (5) in the circumferential direction.
  3. Laundry dryer having a drum according to at least one of claims 1 or 2,
    characterised in that
    the drum casing (1) is designed with at least one noise-deadening strip on its outer side in the circumferential direction.
  4. Laundry dryer having a drum according to claim 1,
    characterised in that
    the drum casing (1) is designed with at least one non-structured area (5) in an axial direction and/or approximately axial direction.
EP02015398A 2001-09-13 2002-07-11 laundry dryer with drum Expired - Lifetime EP1293594B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10145079 2001-09-13
DE10145079A DE10145079C1 (en) 2001-09-13 2001-09-13 Drum, for washer-dryer, has casing surface at least partly provided with indentations in form of honeycomb curvature structure whose honeycomb surfaces face outside of drum

Publications (2)

Publication Number Publication Date
EP1293594A1 EP1293594A1 (en) 2003-03-19
EP1293594B1 true EP1293594B1 (en) 2006-04-12

Family

ID=7698867

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02015398A Expired - Lifetime EP1293594B1 (en) 2001-09-13 2002-07-11 laundry dryer with drum

Country Status (4)

Country Link
EP (1) EP1293594B1 (en)
AT (1) ATE323188T1 (en)
DE (2) DE10145079C1 (en)
ES (1) ES2258120T3 (en)

Cited By (5)

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Publication number Priority date Publication date Assignee Title
EP2177656A1 (en) 2008-10-16 2010-04-21 Miele & Cie. KG Drum for a laundry dryer
US8438883B2 (en) 2007-02-28 2013-05-14 Samsung Electronics Co., Ltd. Washing machine improving washing efficiency
DE102021122654A1 (en) 2021-09-01 2023-03-02 Miele & Cie. Kg Drum for a clothes dryer and clothes dryer
DE102021125796A1 (en) 2021-10-05 2023-04-06 Miele & Cie. Kg Drum for a clothes dryer and clothes dryer
DE102021126013A1 (en) 2021-10-07 2023-04-13 Miele & Cie. Kg Drum for a clothes dryer and clothes dryer

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JP4923145B2 (en) * 2007-11-12 2012-04-25 トゥルガ・シムセク Cleaning / drawing machine
CN101845739B (en) * 2009-03-23 2013-08-07 海尔集团公司 Inner drum of washing machine with high-efficient washing and dehydration structure
DE102009048962A1 (en) 2009-10-10 2011-04-14 Hans Kilian Fremmer Sponge has totally or partly forced hexagonal baggy structure which is simple
DE102009052912A1 (en) 2009-11-12 2011-05-26 Hans Kilian Fremmer Metallic component for bicycle, has grid of hexagonal bulge parts made of natural materials and provided in honeycomb structure or tortoise shell structure
DE102009055844A1 (en) 2009-11-26 2011-06-22 Fremmer, Hans-Kilian, 97980 Package, has totally or partly forced hexagonal baggy structure and different layers, where each layer consists of hexagonal bumps or one layer that lie at interior is provided with hexagonal baggy structure
DE102009057097A1 (en) 2009-12-04 2011-06-09 Hans-Kilian Fremmer Shoe has enforced hexagonal bulge structure designed in partial or complete manner
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DE102009057190A1 (en) 2009-12-05 2013-04-11 Hans Kilian Fremmer Wind energy generator for use at e.g. roadside, has main portion that is provided with hexagonal bag structure and rotating elements
DE102009058499A1 (en) 2009-12-16 2011-07-21 Fremmer, Hans Kilian, 97980 Solar collector e.g. thermal collector for creation of thermal energy, has surface designed in large-type, where collector exhibits complete, partial or hexagonal baggy structure at outer lying layer
CZ2010341A3 (en) * 2010-05-03 2011-03-16 Primus Ce S.R.O. Washing machine drum
DE102010023364A1 (en) 2010-06-10 2012-07-26 Hans-Kilian Fremmer Plastic toilet comprises several hexagonal dents or honeycomb dents that are arranged in lattice form
ES2558254T3 (en) 2010-10-14 2016-02-02 Alliance Laundry CE s.r.o Drum for washing machine
DE102011009687A1 (en) 2011-01-28 2012-08-02 Hans Kilian Fremmer Beverage container crate has honeycomb-shaped hexagonal baggy structure which is formed entirely or partially
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DE102012009413A1 (en) 2012-05-11 2013-11-14 Hans Kilian Fremmer Cathode plate for use in lead rechargeable battery of motor car, has partly porous surface and baggy structure, where plate is dipped in diluted sulfur-acid solution and separated at cathode metallic lead
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US8438883B2 (en) 2007-02-28 2013-05-14 Samsung Electronics Co., Ltd. Washing machine improving washing efficiency
EP2177656A1 (en) 2008-10-16 2010-04-21 Miele & Cie. KG Drum for a laundry dryer
DE102021122654A1 (en) 2021-09-01 2023-03-02 Miele & Cie. Kg Drum for a clothes dryer and clothes dryer
DE102021125796A1 (en) 2021-10-05 2023-04-06 Miele & Cie. Kg Drum for a clothes dryer and clothes dryer
EP4163433A1 (en) 2021-10-05 2023-04-12 Miele & Cie. KG Drum for a laundry dryer and laundry dryer
DE102021126013A1 (en) 2021-10-07 2023-04-13 Miele & Cie. Kg Drum for a clothes dryer and clothes dryer

Also Published As

Publication number Publication date
ATE323188T1 (en) 2006-04-15
DE10145079C1 (en) 2002-10-10
EP1293594A1 (en) 2003-03-19
ES2258120T3 (en) 2006-08-16
DE50206364D1 (en) 2006-05-24

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