EP2426248B1 - Laundry drum for laundry dryer - Google Patents

Laundry drum for laundry dryer Download PDF

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Publication number
EP2426248B1
EP2426248B1 EP11008792.1A EP11008792A EP2426248B1 EP 2426248 B1 EP2426248 B1 EP 2426248B1 EP 11008792 A EP11008792 A EP 11008792A EP 2426248 B1 EP2426248 B1 EP 2426248B1
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EP
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Prior art keywords
drum
wall
laundry
collars
air openings
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EP11008792.1A
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German (de)
French (fr)
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EP2426248A1 (en
Inventor
Stefan Arnold
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V-Zug AG
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V-Zug AG
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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
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • D06F58/04—Details 

Definitions

  • the invention relates to a laundry drum for a tumble dryer or a tumble dryer with such a laundry drum according to the preamble of the independent claims.
  • a clothes dryer has a laundry drum with a filling opening, through which wet laundry can be introduced into the laundry drum.
  • a process air stream enters the laundry drum through air openings in a wall of the laundry drum, absorbs moisture from the laundry and leaves the laundry drum through air channels.
  • the filling opening is closed by a door and the washing drum rotates in one direction or alternately in both directions (reversing).
  • a laundry drum for a tumble dryer has a drum interior for receiving laundry to be dried. Furthermore, the laundry drum comprises a wall which delimits the drum interior from a drum outer space (on the outside of the drum, in the housing of the tumble dryer).
  • This wall of the laundry drum in this case has a plurality of air openings (for example, with diameters of 10-12 mm), through which a process air stream for drying the laundry from the outside of the drum can be guided into the interior of the drum.
  • the wall of the laundry drum further has to improve the flow characteristics of the process air flow at least between two of the air openings - in a preferred development between all air openings - a the Trommelaussenraum facing flat or convex surface. In other words, no or at least no such depressions are to be found in the region outside the drum, which lead to undesirable turbulences of the process air flow, in particular during its passage through the air openings.
  • a cross-section (ie diameter) of at least one of the air openings - in a preferred development of all air openings - decreases at least in a section from the outside of the drum to the interior of the drum.
  • the term "section” is to be understood in this context as part of the air opening from the drum outer space to the drum interior.
  • This reduction of the cross-section of the air opening (s) at least in one section can be made stepwise or continuously, eg the air openings can be funnel-shaped towards the interior of the drum.
  • the laundry drum comprises a cylinder jacket and a filling opening.
  • the wall and the filling opening are arranged on opposite end faces of the cylinder jacket.
  • the laundry drum is at least partially made of punched sheet metal.
  • a continuous stainless steel sheet blank (still without air openings) punched from the later interior of the drum ago against the later Trommelaussenraum, whereby the air openings are produced in the sheet metal.
  • the wall then has in the Trommelaussenraum directed and encircling the air openings collars.
  • the later drum interior of the wall can be kept free from sharp edges which could damage the laundry during drying or rotation of the laundry drum. Nevertheless, a simpler and more cost-effective production of the wall with the air openings is made possible.
  • At least one of these collars - preferably all collars - in the Trommelaussenraum inlet contours, which in a simpler way (sections) reduction of the cross section of the air opening (s) can be generated to the drum interior out.
  • At least one of the collars - preferably all collars - thereby a flanging, in particular a flange with a radius smaller than 4 mm.
  • the collars are bent away from the center of the air opening "outwards", ie drum outside again in the direction of the wall.
  • intermediate volume between at least two of the collars, preferably between all collars, in the outer space of the drum with a material, e.g. a foreign material, filled out.
  • a material e.g. a foreign material
  • intermediate volume in this context is understood to mean the volume of the air openings between the air openings opposite the air openings of the collars and against the drum interior of the wall between the air openings, which in the drum outer space at least up to an extension of the collars in the Trommelaussenraum (ie until expansion of the collars in the z-direction or even beyond, see below) is filled with the material.
  • the intermediate volume can be poured out after the punching of a sheet metal blank with the production of collars (with or without crimping), for example with a hardening resin or another potting compound.
  • a plane or convex surface of the wall facing the outer wall of the drum can be generated, which leads to an improvement in the flow conditions for the process air flow.
  • the wall of the laundry drum comprises at least two individual parts, at least in one partial area.
  • the two parts can be made of the same material (eg two stamped parts made of stainless steel) or different materials (eg drum inside a stamped part made of stainless steel and drum outside a plastic part).
  • the two individual parts of the wall are mirror-image stamped parts, each with collars surrounding the air openings.
  • the two items of the Wall are then combined with each other so that end faces of the collars of the items are arranged facing each other.
  • the collars of the drum inside side item are oriented towards the drum outer side and the collars of the drum outer side item are oriented towards the drum inside.
  • the faces of the collars face each other.
  • a wall can be produced with a flat surface facing the outer wall of the drum, which leads to an improvement of the flow conditions for the process air flow.
  • the wall comprises, at least in a partial region, a first individual part and a second individual part.
  • both the first item as well as the second item each have at least one circumferential to an air opening collar.
  • At least one collar - preferably all collars - the first item is in each case assigned a collar of the second item of the wall.
  • a collar of the first item and the associated collar of the second item thus form a pair of collars, which rotates about the respective common air opening of the wall after assembly of the items.
  • the collar of the first item inside collar ie pointing to the respective air opening
  • a larger or maximally the same diameter (inner diameter) than the respective associated collar of the second item outside the collar ie pointing away from the air opening, outside diameter.
  • the two individual parts are then assembled to the wall, that at least one pair of collars - preferably all pairs of collars - "is arranged inside each other" or the collars in a direction of the air flow different degrees, ie at least in a section, "overlap".
  • the collar of the first item is at least in a section not directly facing the respective air opening, as seen from it collar inside (ie pointing to the respective air opening indicative) of the associated collar of the second item of the wall is arranged, which faces the actual air opening directly.
  • the air openings can be enclosed in a simpler way by the / the pair of collars (e).
  • a clothes dryer in particular a heat pump dryer, with one of the laundry drums described above benefits from an improved process air flow in the area of the air openings on the laundry drum.
  • an energy saving and / or reduction of the noise level is possible.
  • FIG. 1 shows a perspective view of a laundry drum 10 with a cylinder jacket 14, a filling opening 15 and with a wall 20 in which a plurality of air openings 21 for carrying a process air stream 13 from a Trommelaussenraum 12 (a volume in a housing of the tumble dryer outside the laundry drum 10) in a drum interior 11 (a volume within the laundry drum 10, in which the laundry 2 to be dried is received) is arranged.
  • the wall 20 and the filling opening 15 are arranged on opposite end faces of the cylinder jacket 14 of the laundry drum 10.
  • a running through the laundry drum process air stream 13 can be ensured by the process air stream 13 through the wall 20 at one end face (here: back) of the laundry drum 10 enters the laundry drum 10 and this leaves through the opposite filling opening 15 (here: at the front of the laundry drum 10, along minus z) again.
  • FIG. 2 shows a sectional view in the xz-plane through a portion of a wall 20 of an unclaimed laundry drum 10.
  • the process air stream 13 flows along the minus z-axis through the air openings 21 from the drum outlet 12 into the drum interior 11 (indicated by the black arrows).
  • encircling collars 23 of the wall 20 are visible, which limit the air openings 21 laterally (ie along x and y).
  • flanges 25 are formed on the collars 23. These flanges 25 have bending radii of less than 4 mm.
  • the lateral air opening diameter d is not constant in the axial direction (along z), but decreases in a portion from the drum outer space 12 to the drum inner space 11.
  • the collars 23 inlet contours 24 are not constant in the axial direction (along z), but decreases in a portion from the drum outer space 12 to the drum inner space 11.
  • FIG. 3 shows a sectional view in the xz-plane through a part of the wall 20 from FIG. 1
  • a first inventive embodiment of the laundry drum 10 As in the FIG. 2 the process air stream 13 flows along the minus-z-axis through the air openings 21 from the drum outer space 12 into the drum interior 11 (indicated by the black arrows). In this case, collars 23 of the air openings 21 are visible, which limit the air openings 21 laterally (along x or y). These collars 23 laterally enclose an intermediate volume 26 between the air openings 21 in the drum outer space 12. In the z-direction, the intermediate volume 26 on the side toward the drum interior 11 is the wall material limited between the air openings.
  • the intermediate volume 26 is filled to the extent of the collars 23 in the z-direction (or even beyond) with a foreign material 27, for example with a potting compound or a resin which is cured.
  • a foreign material 27 for example with a potting compound or a resin which is cured.
  • FIG. 4 shows a sectional view in the xz-plane through a part of the wall 20 from FIG. 1
  • a second embodiment of the laundry drum 10 according to the invention.
  • the process air stream 13 flows along the minus-z-axis through the air openings 21 from the drum outer space 12 into the drum interior 11 (indicated by the black arrows).
  • the wall 20 in the second embodiment comprises two individual parts 20a and 20b, which are arranged one behind the other in the z-direction.
  • the two individual parts 20a and 20b of the wall 20 are mirror-image stamped parts with encircling around the air openings 21 collars 23, which, however, have no flanging in this embodiment.
  • the end faces 23a, 23b of the collars 23 of the two individual parts 20a, 20b are oriented against each other.
  • the mirror-image items 20a and 20b are oriented against each other and thus form the wall 20, which has a facing against the Trommelaussenraum 12 flat surface A. In this way, the flow conditions for the process air stream 13 can be improved.
  • FIG. 5 shows a clothes dryer 1 with a laundry drum 10 according to the invention, which has a wall 20 with a plurality of air openings 21, through which a process air stream 13 for drying the laundry 2 from the Trommelaussenraum 12 forth in the drum interior 11 can be guided.
  • the wall 20 has a the Drum outer space 12 facing flat surface A between at least two air openings 21 and the cross-section d at least one of the air openings 21 is reduced from the drum outer space 12 to the drum interior 11.
  • FIG. 6 shows a sectional view through a part of the wall 20 from FIG. 1
  • the third embodiment combines the curls 25 on the collars 23 FIG. 2 which lead to inlet contours 24 of the collars 23, with the filled intermediate volume 26 between the air openings 21 in the drum outer space 12 from the first embodiment according to FIG. 3 ,
  • the wall 20 of the laundry drum 10 according to the third embodiment both a the Trommelaussenraum 12 facing flat or convex surface A and in a portion of the Trommelaussenraum 12 to the drum interior 11 toward reducing cross-section d of the air openings 21.
  • the flow conditions for the process air flow are improved.
  • FIG. 7 shows a sectional view through a part of the wall 20 from FIG. 1
  • the wall 20 comprises two individual parts 20a (inside the drum, ie oriented towards the drum interior 11) and 20b (outside the drum, ie oriented towards the drum outer space 12). Both individual parts 20a, 20b (punched parts) have encircling collars 23c, 23d around the air openings 21.
  • each collar 23c of the first individual part 20a is assigned a collar 23d of the second individual part 20b, ie the two collars 23c and 23d assigned to one another circulate around a common air opening 21.
  • collars 23c, 23d which are assigned to one another form a pair of collars.
  • the collar 23c of the first individual part 20a has a larger or maximally equal inner diameter d i than the outer diameter d a (ie the diameter on the side away from the air opening) of the collar 23d.
  • the two individual parts 20a, 20b are then assembled to the wall 20 such that the pairs of collars 23c, 23d are arranged "in one another" or in other words the collars 23c, 23d "overlap" in the z-direction (direction of the airflow 13).

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Description

Gebiet der ErfindungField of the invention

Die Erfindung betrifft eine Wäschetrommel für einen Wäschetrockner bzw. einen Wäschetrockner mit einer solchen Wäschetrommel gemäss dem Oberbegriff der unabhängigen Patentansprüche.The invention relates to a laundry drum for a tumble dryer or a tumble dryer with such a laundry drum according to the preamble of the independent claims.

Hintergrundbackground

Ein Wäschetrockner besitzt eine Wäschetrommel mit einer Befüllöffnung, durch welche feuchte Wäsche in die Wäschetrommel eingebracht werden kann. Ein Prozessluftstrom tritt durch Luftöffnungen in einer Wand der Wäschetrommel in die Wäschetrommel ein, nimmt Feuchtigkeit aus der Wäsche auf und verlässt die Wäschetrommel durch Luftkanäle. Während der Trocknungsphase ist die Befüllöffnung durch eine Tür verschlossen und die Wäschetrommel rotiert in eine Richtung oder abwechselnd in beide Richtungen (Reversierung).A clothes dryer has a laundry drum with a filling opening, through which wet laundry can be introduced into the laundry drum. A process air stream enters the laundry drum through air openings in a wall of the laundry drum, absorbs moisture from the laundry and leaves the laundry drum through air channels. During the drying phase, the filling opening is closed by a door and the washing drum rotates in one direction or alternately in both directions (reversing).

Die Dokumente EP 1498535 A1 (dieses Dokument offenbart den Oberbegriff des Anspruchs 1), DE 10006975 A1 , WO 2005/113879 A1 , JP 2000107494 A , US 2886901 A , DE 10031038 A1 , JP 54117164 A , JP 56014584 U (dieses Dokument offenbart den Oberbegriff der Ansprüche 6 und 7) und US 3146196 A offenbaren Wäschetrommeln für Waschmaschinen und/oder Wäschetrockner.The documents EP 1498535 A1 (this document discloses the preamble of claim 1), DE 10006975 A1 . WO 2005/113879 A1 . JP 2000107494 A . US Pat. No. 2,886,901 A . DE 10031038 A1 . JP 54117164 A . JP 56014584 U (This document discloses the preamble of claims 6 and 7) and US 3,146,196 A reveal laundry drums for washing machines and / or dryers.

Konventionelle Wäschetrommeln haben jedoch den Nachteil, dass insbesondere die Luftöffnungen zu Strömungsverlusten und/oder Verwirbelungen im Prozessluftstrom und somit zu höherem Energieverbrauch sowie stärkeren Lärmemissionen führen.However, conventional laundry drums have the disadvantage that in particular the air openings lead to flow losses and / or turbulence in the process air flow and thus to higher energy consumption and greater noise emissions.

Darstellung der ErfindungPresentation of the invention

Es stellt sich vor diesem Hintergrund die Aufgabe, eine verbesserte Wäschetrommel für einen Wäschetrockner bzw. einen Wäschetrockner mit einer solchen Wäschetrommel bereitzustellen. Diese Aufgabe wird von den Vorrichtungen gemäss den unabhängigen Patentansprüchen gelöst.It is against this background the task of providing an improved laundry drum for a tumble dryer or a tumble dryer with such a laundry drum. This object is achieved by the devices according to the independent claims.

Erfindungsgemäss weist eine Wäschetrommel für einen Wäschetrockner dabei einen Trommelinnenraum zur Aufnahme von zu trocknender Wäsche auf. Weiterhin umfasst die Wäschetrommel eine Wand, welche den Trommelinnenraum von einem Trommelaussenraum (auf der Aussenseite der Trommel, im Gehäuse des Wäschetrockners) abgrenzt. Diese Wand der Wäschetrommel weist dabei eine Mehrzahl von Luftöffnungen (z.B. mit Durchmessern von 10-12 mm) auf, durch welche ein Prozessluftstrom zum Trocknen der Wäsche vom Trommelaussenraum her in den Trommelinnenraum geführt werden kann. Die Wand der Wäschetrommel weist weiterhin zur Verbesserung der Strömungseigenschaften des Prozessluftstroms zumindest zwischen zwei der Luftöffnungen - in einer bevorzugten Weiterbildung zwischen allen Luftöffnungen - eine dem Trommelaussenraum zugewandte ebene oder konvexe Fläche auf. Mit anderen Worten sind in diesem Bereich trommelaussenseitig keine bzw. zumindest keine solchen Vertiefungen vorzufinden, welche zu unerwünschten Verwirbelungen des Prozessluftstroms führen, insbesondere bei dessen Durchgang durch die Luftöffnungen.According to the invention, a laundry drum for a tumble dryer has a drum interior for receiving laundry to be dried. Furthermore, the laundry drum comprises a wall which delimits the drum interior from a drum outer space (on the outside of the drum, in the housing of the tumble dryer). This wall of the laundry drum in this case has a plurality of air openings (for example, with diameters of 10-12 mm), through which a process air stream for drying the laundry from the outside of the drum can be guided into the interior of the drum. The wall of the laundry drum further has to improve the flow characteristics of the process air flow at least between two of the air openings - in a preferred development between all air openings - a the Trommelaussenraum facing flat or convex surface. In other words, no or at least no such depressions are to be found in the region outside the drum, which lead to undesirable turbulences of the process air flow, in particular during its passage through the air openings.

Zusätzlich verringert sich in einer bevorzugten Ausführungsform ein Querschnitt (d.h. Durchmesser) zumindest einer der Luftöffnungen - in einer bevorzugten Weiterbildung aller Luftöffnungen - zumindest in einem Abschnitt vom Trommelaussenraum zum Trommelinnenraum hin. Der Begriff "Abschnitt" ist in diesem Zusammenhang als Teilbereich der Luftöffnung vom Trommelaussenraum zum Trommelinnenraum zu verstehen. Diese Verringerung des Querschnitts der Luftöffnung(en) mindestens in einem Abschnitt kann stufenweise oder stufenlos erfolgen, z.B. können die Luftöffnungen trichterförmig zum Trommelinnenraum hin ausgebildet sein. Durch diese Massnahme bzw. Massnahmen wird eine weitere Verbesserung des Strömungsverhaltens des Prozessluftstroms erreicht, wodurch kleinere Prozessluftventilatoren eingesetzt werden können und/ oder Energieeinsparungen ermöglicht werden sowie eine Verringerung der Geräuschemissionen.In addition, in a preferred embodiment, a cross-section (ie diameter) of at least one of the air openings - in a preferred development of all air openings - decreases at least in a section from the outside of the drum to the interior of the drum. The term "section" is to be understood in this context as part of the air opening from the drum outer space to the drum interior. This reduction of the cross-section of the air opening (s) at least in one section can be made stepwise or continuously, eg the air openings can be funnel-shaped towards the interior of the drum. By this measure or measures, a further improvement of the flow behavior of the process air flow is achieved, whereby smaller process air fans can be used and / or energy savings are made possible and a reduction in noise emissions.

Die Wäschetrommel umfasst einen Zylindermantel und eine Befüllöffnung. Dabei sind in einer bevorzugten Ausführungsform die Wand und die Befüllöffnung an gegenüberliegenden Stirnseiten des Zylindermantels angeordnet. Somit kann ein durch die Wäschetrommel laufender Prozessluftstrom gewährleistet werden, indem der Prozessluftstrom z.B. durch die Wand an einer Stirnseite der Wäschetrommel in die Wäschetrommel eintritt und diese durch die gegenüberliegende Befüllöffnung wieder verlässt.The laundry drum comprises a cylinder jacket and a filling opening. In this case, in a preferred embodiment, the wall and the filling opening are arranged on opposite end faces of the cylinder jacket. Thus, a running through the laundry drum process air flow can be ensured by the process air flow, for. enters the laundry drum through the wall at one end face of the laundry drum and leaves it again through the opposite filling opening.

In einer ersten erfindungsgemässen Wäschetrommel ist die Wäschetrommel zumindest teilweise aus durchstanztem Blech gefertigt. Dabei wird z.B. ein durchgehender Edelstahl-Blechrohling (noch ohne Luftöffnungen) vom späteren Trommelinnenraum her gegen den späteren Trommelaussenraum durchstanzt, wodurch die Luftöffnungen im Blech erzeugt werden. Die Wand weist dann in den Trommelaussenraum gerichtete und um die Luftöffnungen umlaufende Krägen auf. Somit kann der spätere Trommelinnenraum der Wand frei von scharfen Kanten gehalten werden, welche die Wäsche während der Trocknung bzw. Rotation der Wäschetrommel beschädigen könnten. Dennoch wird eine einfachere und kostengünstigere Herstellung der Wand mit den Luftöffnungen ermöglicht.In a first laundry drum according to the invention, the laundry drum is at least partially made of punched sheet metal. In doing so, e.g. a continuous stainless steel sheet blank (still without air openings) punched from the later interior of the drum ago against the later Trommelaussenraum, whereby the air openings are produced in the sheet metal. The wall then has in the Trommelaussenraum directed and encircling the air openings collars. Thus, the later drum interior of the wall can be kept free from sharp edges which could damage the laundry during drying or rotation of the laundry drum. Nevertheless, a simpler and more cost-effective production of the wall with the air openings is made possible.

Vorzugsweise weist mindestens einer dieser Krägen - vorzugsweise alle Krägen - im Trommelaussenraum Einlaufkonturen auf, wodurch auf einfachere Weise eine (abschnittsweise) Verringerung des Querschnitts der Luftöffnung(en) zum Trommelinnenraum hin erzeugt werden kann.Preferably, at least one of these collars - preferably all collars - in the Trommelaussenraum inlet contours, which in a simpler way (sections) reduction of the cross section of the air opening (s) can be generated to the drum interior out.

In einer besonders bevorzugten Ausführungsform weist mindestens einer der Krägen - vorzugsweise alle Krägen - dabei eine Bördelung auf, insbesondere eine Bördelung mit einem Radius kleiner als 4 mm. Mit anderen Worten werden die Krägen vom Zentrum der Luftöffnung weg "nach aussen zurückgebogen", also trommelaussenseitig wieder in Richtung der Wand. Somit ist nur ein Produktionsschritt zum Erzeugen der Luftöffnungen mit Einlaufkonturen nötig.In a particularly preferred embodiment, at least one of the collars - preferably all collars - thereby a flanging, in particular a flange with a radius smaller than 4 mm. In other words, the collars are bent away from the center of the air opening "outwards", ie drum outside again in the direction of the wall. Thus, only one production step for producing the air openings with inlet contours is necessary.

In der ersten erfindungsgemässen Wäschetrommel ist ein Zwischenvolumen zwischen mindestens zwei der Krägen - vorzugsweise zwischen allen Krägen - im Trommelaussenraum mit einem Werkstoff, z.B. einem Fremdwerkstoff, ausgefüllt. Somit kann auf einfachere Weise eine dem Trommelaussenraum zugewandte ebene oder konvexe Fläche der Wand erzeugt werden. Unter dem Begriff "Zwischenvolumen" ist in diesem Zusammenhang das gegen die Luftöffnungen von den Krägen und gegen den Trommelinnenraum vom zwischen den Luftöffnungen angeordneten Wandmaterial begrenzte Volumen zwischen den Luftöffnungen zu verstehen, welches im Trommelaussenraum mindestens bis zu einer Ausdehnung der Krägen in den Trommelaussenraum (also bis zur Ausdehnung der Krägen in z-Richtung oder sogar darüber hinaus, siehe unten) mit dem Werkstoff ausgefüllt ist.In the first laundry drum according to the invention, there is an intermediate volume between at least two of the collars, preferably between all collars, in the outer space of the drum with a material, e.g. a foreign material, filled out. Thus, in a simpler manner, a flat or convex surface of the wall facing the outer wall of the drum can be produced. The term "intermediate volume" in this context is understood to mean the volume of the air openings between the air openings opposite the air openings of the collars and against the drum interior of the wall between the air openings, which in the drum outer space at least up to an extension of the collars in the Trommelaussenraum (ie until expansion of the collars in the z-direction or even beyond, see below) is filled with the material.

In einer bevorzugten Ausführungsform kann das Zwischenvolumen nach dem Durchstanzen eines Blechrohlings mit Erzeugung von Krägen (mit oder ohne Bördelung) beispielsweise mit einem aushärtenden Harz oder einer anderen Vergussmasse ausgegossen werden. Auf diese Weise kann wie beschrieben auf einfachere Weise eine dem Trommelaussenraum zugewandte ebene oder konvexe Fläche der Wand erzeugt werden, was zu einer Verbesserung der Strömungsverhältnisse für den Prozessluftstrom führt.In a preferred embodiment, the intermediate volume can be poured out after the punching of a sheet metal blank with the production of collars (with or without crimping), for example with a hardening resin or another potting compound. In this way, as described, in a simpler manner, a plane or convex surface of the wall facing the outer wall of the drum can be generated, which leads to an improvement in the flow conditions for the process air flow.

In einer zweiten erfindungsgemässen Wäschetrommel umfasst die Wand der Wäschetrommel zumindest in einem Teilbereich mindestens zwei Einzelteile. Die beiden Einzelteile können aus demselben Material (z.B. zwei Stanzteile aus Edelstahl) oder unterschiedlichen Materialien (z.B. trommelinnenseitig ein Stanzteil aus Edelstahl und trommelaussenseitig ein Kunststoffteil) hergestellt sein. Die beiden Einzelteile der Wand sind in der zweiten erfindungsgemässen Wäschetrommel spiegelbildliche Stanzteile mit jeweils um die Luftöffnungen umlaufenden Krägen. Die beiden Einzelteile der Wand werden dann so miteinander kombiniert, dass Stirnseiten der Krägen der Einzelteile gegeneinander gerichtet angeordnet sind. Mit anderen Worten sind die Krägen des trommelinnenseitigen Einzelteils zur Trommelaussenseite hin orientiert und die Krägen des trommelaussenseitigen Einzelteils sind zur Trommelinnenseite hin orientiert. Dabei stehen sich die Stirnseiten der Krägen gegenüber. Somit kann eine Wand mit einer dem Trommelaussenraum zugewandten ebenen Fläche erzeugt werden, was zu einer Verbesserung der Strömungsverhältnisse für den Prozessluftstrom führt.In a second laundry drum according to the invention, the wall of the laundry drum comprises at least two individual parts, at least in one partial area. The two parts can be made of the same material (eg two stamped parts made of stainless steel) or different materials (eg drum inside a stamped part made of stainless steel and drum outside a plastic part). In the second washing drum according to the invention, the two individual parts of the wall are mirror-image stamped parts, each with collars surrounding the air openings. The two items of the Wall are then combined with each other so that end faces of the collars of the items are arranged facing each other. In other words, the collars of the drum inside side item are oriented towards the drum outer side and the collars of the drum outer side item are oriented towards the drum inside. The faces of the collars face each other. Thus, a wall can be produced with a flat surface facing the outer wall of the drum, which leads to an improvement of the flow conditions for the process air flow.

In einer dritten erfindungsgemässen Wäschetrommel umfasst die Wand zumindest in einem Teilbereich ein erstes Einzelteil sowie ein zweites Einzelteil. Dabei weisen sowohl das erste Einzelteil wie auch das zweite Einzelteil jeweils mindestens einen um eine Luftöffnung umlaufenden Kragen auf. Zumindest dem einen Kragen - vorzugsweise allen Krägen - des ersten Einzelteils ist dabei jeweils ein Kragen des zweiten Einzelteils der Wand zugeordnet. Jeweils ein Kragen des ersten Einzelteils und der zugeordnete Kragen des zweiten Einzelteils bilden somit ein Kragenpaar, welches nach dem Zusammensetzen der Einzelteile um die jeweilige gemeinsame Luftöffnung der Wand umläuft. In einem solchen Kragenpaar weist der Kragen des ersten Einzelteils krageninnenseitig (also zu der jeweiligen Luftöffnung hinweisend) einen grösseren oder maximal den gleichen Durchmesser (Innendurchmesser) auf als der jeweils zugehörige Kragen des zweiten Einzelteils kragenaussenseitig (also von der Luftöffnung wegweisend, Aussendurchmesser). Die beiden Einzelteile werden dann so zur Wand zusammengesetzt, dass zumindest ein Kragenpaar - vorzugsweise alle Kragenpaare - "ineinander" angeordnet ist/sind bzw. die Krägen sich in einer Richtung des Luftstroms unterschiedlich stark, also zumindest in einem Abschnitt, "überlappen". Mit anderen Worten ist der Kragen des ersten Einzelteils zumindest in einem Abschnitt nicht der jeweiligen Luftöffnung direkt zugewandt, da von ihm aus gesehen krageninnenseitig (also zu der jeweiligen Luftöffnung hinweisend) der zugehörige Kragen des zweiten Einzelteils der Wand angeordnet ist, welcher der eigentlichen Luftöffnung direkt zugewandt ist. Somit können die Luftöffnungen auf einfachere Art durch das/die Kragenpaar(e) umschlossen werden.In a third laundry drum according to the invention, the wall comprises, at least in a partial region, a first individual part and a second individual part. In this case, both the first item as well as the second item each have at least one circumferential to an air opening collar. At least one collar - preferably all collars - the first item is in each case assigned a collar of the second item of the wall. In each case a collar of the first item and the associated collar of the second item thus form a pair of collars, which rotates about the respective common air opening of the wall after assembly of the items. In such a pair of collars, the collar of the first item inside collar (ie pointing to the respective air opening) a larger or maximally the same diameter (inner diameter) than the respective associated collar of the second item outside the collar (ie pointing away from the air opening, outside diameter). The two individual parts are then assembled to the wall, that at least one pair of collars - preferably all pairs of collars - "is arranged inside each other" or the collars in a direction of the air flow different degrees, ie at least in a section, "overlap". In other words, the collar of the first item is at least in a section not directly facing the respective air opening, as seen from it collar inside (ie pointing to the respective air opening indicative) of the associated collar of the second item of the wall is arranged, which faces the actual air opening directly. Thus, the air openings can be enclosed in a simpler way by the / the pair of collars (e).

Ein Wäschetrockner, insbesondere ein Wärmepumpentrockner, mit einer der oben beschriebenen Wäschetrommeln profitiert von einer verbesserten Prozessluftströmung im Bereich der Luftöffnungen an der Wäschetrommel. Somit ist eine Energieeinsparung und/oder Reduzierung des Geräuschpegels möglich.A clothes dryer, in particular a heat pump dryer, with one of the laundry drums described above benefits from an improved process air flow in the area of the air openings on the laundry drum. Thus, an energy saving and / or reduction of the noise level is possible.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Weitere Ausgestaltungen, Vorteile und Anwendungen der Erfindung ergeben sich aus den abhängigen Ansprüchen und aus der nun folgenden Beschreibung anhand der Figuren. Dabei zeigt die

  • Figur 1 eine perspektivische Darstellung einer Wäschetrommel 10 mit einem Zylindermantel 14, einer Befüllöffnung 15 sowie mit einer Wand 20, in welcher eine Mehrzahl von Luftöffnungen 21 zum Durchführen eines Prozessluftstroms 13 von einem Trommelaussenraum 12 in einen Trommelinnenraum 11 angeordnet ist,
  • Figur 2 eine Schnittdarstellung durch einen Teil einer Wand 20 einer nicht beanspruchten Wäschetrommel 10 mit um Luftöffnungen 21 umlaufenden Krägen 23, welche in einem Trommelaussenraum 12 eine Bördelung 25 aufweisen,
  • Figur 3 eine Schnittdarstellung durch einen Teil der Wand 20 aus Figur 1 gemäss einer ersten erfindungsgemässen Ausführungsform der Wäschetrommel 10 mit einem ausgefüllten Zwischenvolumen 26 zwischen den Krägen 23 der Luftöffnungen 21,
  • Figur 4 eine Schnittdarstellung durch einen Teil der Wand 20 aus Figur 1 gemäss einer zweiten erfindungsgemässen Ausführungsform der Wäschetrommel 10, wobei die Wand 20 zwei spiegelbildliche Stanzteile 20a, 20b mit stirnseitig gegeneinander angeordneten Krägen 23 umfasst,
  • Figur 5 einen Wäschetrockner 1 mit einer erfindungsgemässen Wäschetrommel 10,
  • Figur 6 eine Schnittdarstellung durch einen Teil der Wand 20 aus Figur 1 gemäss einer dritten erfindungsgemässen Ausführungsform der Wäschetrommel 10 mit um die Luftöffnungen 21 umlaufenden Krägen 23, welche im Trommelaussenraum 12 eine Bördelung 25 aufweisen, wobei Zwischenvolumina 26 zwischen den Krägen 23 mit einem Fremdwerkstoff 27 ausgefüllt sind, und
  • Figur 7 eine Schnittdarstellung durch einen Teil der Wand 20 aus Figur 1 gemäss einer vierten erfindungsgemässen Ausführungsform der Wäschetrommel 10, wobei die Wand 20 zwei Einzelteile 20a, 20b mit sich überlappenden Kragenpaaren umfasst.
Further embodiments, advantages and applications of the invention will become apparent from the dependent claims and from the following description with reference to FIGS. It shows the
  • FIG. 1 a perspective view of a laundry drum 10 with a cylinder jacket 14, a filling opening 15 and with a wall 20, in which a plurality of air openings 21 for performing a process air flow 13 from a Trommelaussenraum 12 is disposed in a drum interior 11,
  • FIG. 2 a sectional view through a portion of a wall 20 of an unclaimed laundry drum 10 with around air openings 21 encircling collars 23 which have a flange 25 in a Trommelaussenraum 12,
  • FIG. 3 a sectional view through a portion of the wall 20 from FIG. 1 according to a first inventive embodiment of the laundry drum 10 with a filled intermediate volume 26 between the collars 23 of the air openings 21,
  • FIG. 4 a sectional view through a portion of the wall 20 from FIG. 1 according to a second embodiment of the laundry drum 10 according to the invention, wherein the wall 20 comprises two mirror-image punched parts 20a, 20b with collars 23 arranged face-to-face with each other,
  • FIG. 5 a clothes dryer 1 with a laundry drum 10 according to the invention,
  • FIG. 6 a sectional view through a portion of the wall 20 from FIG. 1 According to a third embodiment of the laundry drum 10 according to the invention with around the air openings 21 encircling collars 23 which have a flange 25 in the Trommelaussenraum 12, wherein intermediate volumes 26 between the collars 23 are filled with a foreign material 27, and
  • FIG. 7 a sectional view through a portion of the wall 20 from FIG. 1 According to a fourth embodiment of the laundry drum 10 according to the invention, the wall 20 comprises two individual parts 20a, 20b with overlapping pairs of collars.

Wege zur Ausführung der ErfindungWays to carry out the invention

Die Figur 1 zeigt eine perspektivische Darstellung einer Wäschetrommel 10 mit einem Zylindermantel 14, einer Befüllöffnung 15 sowie mit einer Wand 20, in welcher eine Mehrzahl von Luftöffnungen 21 zum Durchführen eines Prozessluftstroms 13 von einem Trommelaussenraum 12 (ein Volumen in einem Gehäuse des Wäschetrockners ausserhalb der Wäschetrommel 10) in einen Trommelinnenraum 11 (ein Volumen innerhalb der Wäschetrommel 10, in welchem die zu trocknende Wäsche 2 aufgenommen wird) angeordnet ist. Die Wand 20 und die Befüllöffnung 15 sind an gegenüberliegenden Stirnseiten des Zylindermantels 14 der Wäschetrommel 10 angeordnet. Somit kann ein durch die Wäschetrommel laufender Prozessluftstrom 13 gewährleistet werden, indem der Prozessluftstrom 13 durch die Wand 20 an einer Stirnseite (hier: Rückseite) der Wäschetrommel 10 in die Wäschetrommel 10 eintritt und diese durch die gegenüberliegende Befüllöffnung 15 (hier: an der Vorderseite der Wäschetrommel 10, entlang minus z) wieder verlässt.The FIG. 1 shows a perspective view of a laundry drum 10 with a cylinder jacket 14, a filling opening 15 and with a wall 20 in which a plurality of air openings 21 for carrying a process air stream 13 from a Trommelaussenraum 12 (a volume in a housing of the tumble dryer outside the laundry drum 10) in a drum interior 11 (a volume within the laundry drum 10, in which the laundry 2 to be dried is received) is arranged. The wall 20 and the filling opening 15 are arranged on opposite end faces of the cylinder jacket 14 of the laundry drum 10. Thus, a running through the laundry drum process air stream 13 can be ensured by the process air stream 13 through the wall 20 at one end face (here: back) of the laundry drum 10 enters the laundry drum 10 and this leaves through the opposite filling opening 15 (here: at the front of the laundry drum 10, along minus z) again.

Die Figur 2 zeigt eine Schnittdarstellung in der x-z-Ebene durch einen Teil einer Wand 20 einer nicht beanspruchten Wäschetrommel 10. Der Prozessluftstrom 13 fliesst entlang der minus-z-Achse durch die Luftöffnungen 21 vom Trommelaussenraum 12 in den Trommelinnenraum 11 (angedeutet durch die schwarzen Pfeile). Dabei sind um die Luftöffnungen 21 umlaufende Krägen 23 der Wand 20 sichtbar, welche die Luftöffnungen 21 lateral (d.h. entlang x bzw. y) begrenzen. Durch ein "Zurückbiegen" von Kragenmaterial nach aussen (also vom Zentrum der Luftöffnungen 21 weg und entlang der minus-z-Achse) entstehen Bördelungen 25 an den Krägen 23. Diese Bördelungen 25 weisen Biegeradien von weniger als 4 mm auf. Somit ist der laterale Luftöffnungsdurchmesser d in axialer Richtung (entlang z) nicht konstant, sondern verringert sich in einem Abschnitt vom Trommelaussenraum 12 zum Trommelinnenraum 11 hin. Mit anderen Worten weisen die Krägen 23 Einlaufkonturen 24 auf. Durch diese Massnahme können die Strömungsverhältnisse für den Prozessluftstrom 13 weiter verbessert werden.The FIG. 2 shows a sectional view in the xz-plane through a portion of a wall 20 of an unclaimed laundry drum 10. The process air stream 13 flows along the minus z-axis through the air openings 21 from the drum outlet 12 into the drum interior 11 (indicated by the black arrows). In this case, around the air openings 21 encircling collars 23 of the wall 20 are visible, which limit the air openings 21 laterally (ie along x and y). By "bending back" collar material outwards (ie away from the center of the air openings 21 and along the minus-z axis), flanges 25 are formed on the collars 23. These flanges 25 have bending radii of less than 4 mm. Thus, the lateral air opening diameter d is not constant in the axial direction (along z), but decreases in a portion from the drum outer space 12 to the drum inner space 11. In other words, the collars 23 inlet contours 24. By this measure, the flow conditions for the process air stream 13 can be further improved.

Die Figur 3 zeigt eine Schnittdarstellung in der x-z-Ebene durch einen Teil der Wand 20 aus Figur 1 gemäss einer ersten erfindungsgemässen Ausführungsform der Wäschetrommel 10. Wie in der Figur 2 fliesst der Prozessluftstrom 13 entlang der minus-z-Achse durch die Luftöffnungen 21 vom Trommelaussenraum 12 in den Trommelinnenraum 11 (angedeutet durch die schwarzen Pfeile). Dabei sind Krägen 23 der Luftöffnungen 21 sichtbar, welche die Luftöffnungen 21 lateral (entlang x bzw. y) begrenzen. Diese Krägen 23 umschliessen lateral ein Zwischenvolumen 26 zwischen den Luftöffnungen 21 im Trommelaussenraum 12. In der z-Richtung ist das Zwischenvolumen 26 auf der Seite zum Trommelinnenraum 11 hin das Wandmaterial zwischen den Luftöffnungen begrenzt. Das Zwischenvolumen 26 ist bis zur Ausdehnung der Krägen 23 in z-Richtung (bzw. sogar darüber hinaus) mit einem Fremdwerkstoff 27 ausgefüllt, z.B. mit einer Vergussmasse oder einem Harz, welches ausgehärtet wird. Somit wird eine dem Trommelaussenraum 12 zugewandte ebene bzw. konvexe Fläche A der Wand 20 erreicht. Auf diese Weise können die Strömungsverhältnisse für den Prozessluftstrom 13 verbessert werden.The FIG. 3 shows a sectional view in the xz-plane through a part of the wall 20 from FIG. 1 According to a first inventive embodiment of the laundry drum 10. As in the FIG. 2 the process air stream 13 flows along the minus-z-axis through the air openings 21 from the drum outer space 12 into the drum interior 11 (indicated by the black arrows). In this case, collars 23 of the air openings 21 are visible, which limit the air openings 21 laterally (along x or y). These collars 23 laterally enclose an intermediate volume 26 between the air openings 21 in the drum outer space 12. In the z-direction, the intermediate volume 26 on the side toward the drum interior 11 is the wall material limited between the air openings. The intermediate volume 26 is filled to the extent of the collars 23 in the z-direction (or even beyond) with a foreign material 27, for example with a potting compound or a resin which is cured. Thus, a flat or convex surface A of the wall 20 facing the outer wall 12 of the drum is achieved. In this way, the flow conditions for the process air stream 13 can be improved.

Die Figur 4 zeigt eine Schnittdarstellung in der x-z-Ebene durch einen Teil der Wand 20 aus Figur 1 gemäss einer zweiten erfindungsgemässen Ausführungsform der Wäschetrommel 10. Wie in den Figuren 2 und 3 fliesst der Prozessluftstrom 13 entlang der minus-z-Achse durch die Luftöffnungen 21 vom Trommelaussenraum 12 in den Trommelinnenraum 11 (angedeutet durch die schwarzen Pfeile). Abweichend von der ersten Ausführungsform der Wäschetrommel 10 umfasst die Wand 20 in der zweiten Ausführungsform zwei Einzelteile 20a und 20b, welche in der z-Richtung hintereinander angeordnet sind. Die beiden Einzelteile 20a und 20b der Wand 20 sind spiegelbildliche Stanzteile mit um die Luftöffnungen 21 umlaufenden Krägen 23, welche in dieser Ausführungsform allerdings keine Bördelung aufweisen. Dabei sind die Stirnseiten 23a, 23b der Krägen 23 der beiden Einzelteile 20a, 20b gegeneinander orientiert. Mit anderen Worten sind die spiegelbildlichen Einzelteile 20a und 20b gegeneinander orientiert verbunden und bilden somit die Wand 20, welche eine gegen den Trommelaussenraum 12 gewandte ebene Fläche A aufweist. Auf diese Weise können die Strömungsverhältnisse für den Prozessluftstrom 13 verbessert werden.The FIG. 4 shows a sectional view in the xz-plane through a part of the wall 20 from FIG. 1 According to a second embodiment of the laundry drum 10 according to the invention. As in FIGS Figures 2 and 3 the process air stream 13 flows along the minus-z-axis through the air openings 21 from the drum outer space 12 into the drum interior 11 (indicated by the black arrows). Notwithstanding the first embodiment of the laundry drum 10, the wall 20 in the second embodiment comprises two individual parts 20a and 20b, which are arranged one behind the other in the z-direction. The two individual parts 20a and 20b of the wall 20 are mirror-image stamped parts with encircling around the air openings 21 collars 23, which, however, have no flanging in this embodiment. The end faces 23a, 23b of the collars 23 of the two individual parts 20a, 20b are oriented against each other. In other words, the mirror-image items 20a and 20b are oriented against each other and thus form the wall 20, which has a facing against the Trommelaussenraum 12 flat surface A. In this way, the flow conditions for the process air stream 13 can be improved.

Die Figur 5 zeigt einen Wäschetrockner 1 mit einer erfindungsgemässen Wäschetrommel 10, welche eine Wand 20 mit einer Mehrzahl von Luftöffnungen 21 aufweist, durch welche ein Prozessluftstrom 13 zur Trocknung der Wäsche 2 vom Trommelaussenraum 12 her in den Trommelinnenraum 11 führbar ist. Die Wand 20 hat dabei eine dem Trommelaussenraum 12 zugewandte ebene Fläche A zwischen mindestens zwei Luftöffnungen 21 und der Querschnitt d zumindest einer der Luftöffnungen 21 verringert sich vom Trommelaussenraum 12 zum Trommelinnenraum 11 hin.The FIG. 5 shows a clothes dryer 1 with a laundry drum 10 according to the invention, which has a wall 20 with a plurality of air openings 21, through which a process air stream 13 for drying the laundry 2 from the Trommelaussenraum 12 forth in the drum interior 11 can be guided. The wall 20 has a the Drum outer space 12 facing flat surface A between at least two air openings 21 and the cross-section d at least one of the air openings 21 is reduced from the drum outer space 12 to the drum interior 11.

Die Figur 6 zeigt eine Schnittdarstellung durch einen Teil der Wand 20 aus Figur 1 gemäss einer dritten erfindungsgemässen Ausführungsform der Wäschetrommel 10. Die dritte Ausführungsform kombiniert die Bördelungen 25 an den Krägen 23 aus Figur 2, welche zu Einlaufkonturen 24 der Krägen 23 führen, mit dem ausgefüllten Zwischenvolumen 26 zwischen den Luftöffnungen 21 im Trommelaussenraum 12 aus der ersten Ausführungsform gemäss Figur 3. Somit weist die Wand 20 der Wäschetrommel 10 gemäss der dritten Ausführungsform sowohl eine dem Trommelaussenraum 12 zugewandte ebene oder konvexe Fläche A als auch einen sich in einem Abschnitt vom Trommelaussenraum 12 zum Trommelinnenraum 11 hin verringernden Querschnitt d der Luftöffnungen 21 auf. Somit werden die Strömungsverhältnisse für den Prozessluftstrom verbessert.The FIG. 6 shows a sectional view through a part of the wall 20 from FIG. 1 According to a third embodiment of the washing drum 10 according to the invention, the third embodiment combines the curls 25 on the collars 23 FIG. 2 which lead to inlet contours 24 of the collars 23, with the filled intermediate volume 26 between the air openings 21 in the drum outer space 12 from the first embodiment according to FIG. 3 , Thus, the wall 20 of the laundry drum 10 according to the third embodiment, both a the Trommelaussenraum 12 facing flat or convex surface A and in a portion of the Trommelaussenraum 12 to the drum interior 11 toward reducing cross-section d of the air openings 21. Thus, the flow conditions for the process air flow are improved.

Die Figur 7 zeigt eine Schnittdarstellung durch einen Teil der Wand 20 aus Figur 1 gemäss einer vierten erfindungsgemässen Ausführungsform der Wäschetrommel 10, wobei die Wand 20 zwei Einzelteile 20a (trommelinnenseitig, d.h. zum Trommelinnenraum 11 hin orientiert) und 20b (trommelaussenseitig, d.h. zum Trommelaussenraum 12 hin orientiert) umfasst. Beide Einzelteile 20a, 20b (Stanzteile) weisen um die Luftöffnungen 21 umlaufende Krägen 23c, 23d auf. Jedem Kragen 23c des ersten Einzelteils 20a ist dabei ein Kragen 23d des zweiten Einzelteils 20b zugeordnet, d.h. die beiden einander zugeordneten Krägen 23c und 23d umlaufen eine gemeinsame Luftöffnung 21. Mit anderen Worte bilden einander zugeordnete Krägen 23c, 23d ein Kragenpaar. In einem Kragenpaar weist der Kragen 23c des ersten Einzelteils 20a einen grösseren oder maximal gleich grossen Innendurchmesser di auf wie der Aussendruchmesser da (also der Durchmesser auf der luftöffnungsabgewandten Seite) des Kragens 23d. Die beiden Einzelteile 20a, 20b werden dann so zur Wand 20 zusammengesetzt, dass die Kragenpaare 23c, 23d "ineinander" angeordnet sind oder mit anderen Worten sich die Krägen 23c, 23d in der z-Richtung (Richtung des Luftstroms 13) "überlappen".The FIG. 7 shows a sectional view through a part of the wall 20 from FIG. 1 According to a fourth embodiment of the laundry drum 10 according to the invention, the wall 20 comprises two individual parts 20a (inside the drum, ie oriented towards the drum interior 11) and 20b (outside the drum, ie oriented towards the drum outer space 12). Both individual parts 20a, 20b (punched parts) have encircling collars 23c, 23d around the air openings 21. In this case, each collar 23c of the first individual part 20a is assigned a collar 23d of the second individual part 20b, ie the two collars 23c and 23d assigned to one another circulate around a common air opening 21. In other words, collars 23c, 23d which are assigned to one another form a pair of collars. In a pair of collars, the collar 23c of the first individual part 20a has a larger or maximally equal inner diameter d i than the outer diameter d a (ie the diameter on the side away from the air opening) of the collar 23d. The two individual parts 20a, 20b are then assembled to the wall 20 such that the pairs of collars 23c, 23d are arranged "in one another" or in other words the collars 23c, 23d "overlap" in the z-direction (direction of the airflow 13).

Bemerkungen:

  • In den Schnittdarstellungen (Figuren 2, 3 und 4) sind Schnittflächen schraffiert gezeichnet.
  • Die Begriffe "axial" bzw. "lateral" beziehen sich auf eine Richtung parallel zu einer Rotationsachse der Wäschetrommel (Koordinatenachse z) wie in Figur 1 definiert bzw. auf eine Richtung senkrecht dazu (Koordinatenachsen x und y).
Remarks:
  • In the sectional views ( Figures 2 . 3 and 4 ) are cut surfaces hatched.
  • The terms "axial" and "lateral" refer to a direction parallel to an axis of rotation of the laundry drum (coordinate axis z) as in FIG FIG. 1 defined or in a direction perpendicular thereto (coordinate axes x and y).

Während in der vorliegenden Anmeldung bevorzugte Ausführungen der Erfindung beschrieben sind, ist klar darauf hinzuweisen, dass die Erfindung nicht auf diese beschränkt ist und in auch anderer Weise innerhalb des Umfangs der folgenden Ansprüche ausgeführt werden kann.While preferred embodiments of the invention are described in the present application, it should be clearly understood that the invention is not limited to these and may be practiced otherwise within the scope of the following claims.

Claims (12)

  1. Laundry drum (10) for a laundry dryer (1),
    wherein the laundry drum (10) has a drum interior space (11) for receiving laundry (2) to be dried and comprises a wall (20),
    wherein the drum interior space (11) is separated by the wall (20) from a drum exterior space (12),
    wherein the wall (20) has a plurality of air openings (21) through which a process air stream (13) is guidable from the drum exterior space (12) into the drum interior space (11),
    wherein the wall (20) is at least partially made from perforated sheet metal,
    wherein the wall (20) has collars (23) directed into the drum exterior space (12) and revolving around the air openings (21),
    characterized in that an intermediate volume (26) between at least two of the collars (23) is filled with a material (27) in the drum exterior space (12) at least up to an extension of the collars (23) into the drum exterior space (12)
    such that the wall (20) has a flat or convex surface (A) facing the drum exterior space (12) at least between two of the air openings (21).
  2. Laundry drum (10) according to claim 1, wherein at least one of the collars (23), in particular all collars (23), has/have an inlet contour (24).
  3. Laundry drum (10) according to claim 2, wherein at least one of the collars (23), in particular all of the collars (23), has/have a flanging (25), in particular with a radius of less than 4 mm.
  4. Laundry drum according to one of the preceding claims, wherein the material (27) comprises a potting compound.
  5. Laundry drum (10) according to one of the preceding claims, wherein an intermediate volume (26) between all collars (23) is filled with the material (27) in the drum exterior space (12) at least up to an extension of the collars (23) into the drum exterior space (12).
  6. Laundry drum (10) for a laundry dryer (1),
    wherein the laundry drum (10) has a drum interior space (11) for receiving laundry (2) to be dried and comprises a wall (20),
    wherein the drum interior space (11) is separated by the wall (20) from a drum exterior space (12),
    wherein the wall (20) has a plurality of air openings (21) through which a process air stream (13) is guidable from the drum exterior space (12) into the drum interior space (11),
    wherein the wall (20) has a flat or convex surface (A) facing the drum exterior space (12) at least between two of the air openings (21),
    wherein the wall (20) comprises, at least in a partial region, at least two individual parts (20a, 20b),
    characterized in that the individual parts (20a, 20b) of the wall (20) are mirror-inverted stamped parts which both have collars (23) revolving around the air openings (21), and
    in that face sides (23a, 23b) of the collars (23) of the individual parts (20a, 20b) are arranged facing each other.
  7. Laundry drum (10) for a laundry dryer (1),
    wherein the laundry drum (10) has a drum interior space (11) for receiving laundry (2) to be dried and comprises a wall (20),
    wherein the drum interior space (11) is separated by the wall (20) from a drum exterior space (12),
    wherein the wall (20) has a plurality of air openings (21) through which a process air stream (13) is guidable from the drum exterior space (12) into the drum interior space (11),
    wherein the wall (20) has a flat or convex surface (A) facing the drum exterior space (12) at least between two of the air openings (21),
    wherein the wall (20) comprises, at least in a partial region, a first individual part (20a) and a second individual part (20b),
    characterized in that the first individual part (20a) of the wall (20) and the second individual part (20b) of the wall (20) each have at least one collar (23c, 23d) revolving around a common air opening (21),
    wherein a collar (23d) of the second individual part (20b) is assigned to the collar (23c) of the first individual part (20a) each,
    wherein an inner diameter (di) of the collar (23c) of the first individual part (20a) is greater than or equal to an outer diameter (da) of the associated collar (23d) of the second individual part (20b),
    wherein the collar (23d) of the second individual part (20b) is arranged inside of the associated collar (23c) of the first individual part (20a) at least in a section.
  8. Laundry drum according to claim 7, wherein a collar (23d) of the second individual part (20b) is assigned to all of the collars (23c) of the first individual part (20a) each, and in particular wherein each collar (23d) of the second individual part (20b) is arranged inside of the associated collar (23c) of the first individual part (20a) at least in a section.
  9. Laundry drum (10) according to one of the preceding claims, wherein the wall (20) and a filling opening (15) of the laundry drum (10) are each arranged on opposing face sides of a cylinder barrel (14) of the laundry drum (10).
  10. Laundry drum (10) according to one of the preceding claims, wherein a cross-section (d) of at least one of the air openings (21), in particular all air openings (21), decreases at least in a section from the drum exterior space (12) to the drum interior space (11).
  11. Laundry drum (10) according to one of the preceding claims, wherein the wall (20) has a flat or convex surface (A) facing the drum exterior space (12) between all air openings (21).
  12. Laundry dryer (1), in particular heat pump dryer, with a laundry drum (10) according to one of the preceding claims.
EP11008792.1A 2011-11-04 2011-11-04 Laundry drum for laundry dryer Active EP2426248B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11008792.1A EP2426248B1 (en) 2011-11-04 2011-11-04 Laundry drum for laundry dryer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11008792.1A EP2426248B1 (en) 2011-11-04 2011-11-04 Laundry drum for laundry dryer

Publications (2)

Publication Number Publication Date
EP2426248A1 EP2426248A1 (en) 2012-03-07
EP2426248B1 true EP2426248B1 (en) 2017-09-27

Family

ID=45372179

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11008792.1A Active EP2426248B1 (en) 2011-11-04 2011-11-04 Laundry drum for laundry dryer

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EP (1) EP2426248B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012202126A1 (en) * 2012-02-13 2013-08-14 BSH Bosch und Siemens Hausgeräte GmbH Laundry treatment device with a laundry drum having an air inlet opening

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
US2886901A (en) * 1957-02-08 1959-05-19 Gen Motors Corp Seal for rotary drum drier
US3146196A (en) * 1962-09-13 1964-08-25 Gen Electric Laundry centrifuging machine with improved clothes container
JPS54117164A (en) * 1978-03-03 1979-09-11 Matsushita Electric Ind Co Ltd Single-tank type dehydration washing machine
JPS5614584U (en) * 1979-07-16 1981-02-07
JP2000107494A (en) * 1998-10-07 2000-04-18 Hitachi Ltd Clothing drying machine
DE10006975B4 (en) * 2000-02-16 2004-08-12 BSH Bosch und Siemens Hausgeräte GmbH Washing drum for a washing machine
DE10066218B4 (en) * 2000-06-16 2008-04-03 Pharmagg Systemtechnik Gmbh Apparatus for wet-treating laundry and method for manufacturing a drum thereof
ES2260977B1 (en) * 2003-07-15 2007-08-16 Bsh Electrodomesticos España, S.A. DRUM WASHER DRUM.
WO2005113879A1 (en) * 2004-04-20 2005-12-01 Lg Electronics Inc. Washing and drying machine
DE102005056942A1 (en) * 2005-11-29 2007-05-31 BSH Bosch und Siemens Hausgeräte GmbH Method for drying washing in a washing dryer has a bank of thermoelectric Peltier modules in an air circulation path by which the moisture is extracted and the air heated and returned to the drum
DE102008044123A1 (en) * 2008-11-27 2010-06-02 BSH Bosch und Siemens Hausgeräte GmbH Insulation layer and laundry drum for a drying device

Non-Patent Citations (1)

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Title
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Also Published As

Publication number Publication date
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