EP2235246A1 - Laundry drum for a laundry treating machine - Google Patents

Laundry drum for a laundry treating machine

Info

Publication number
EP2235246A1
EP2235246A1 EP09706086A EP09706086A EP2235246A1 EP 2235246 A1 EP2235246 A1 EP 2235246A1 EP 09706086 A EP09706086 A EP 09706086A EP 09706086 A EP09706086 A EP 09706086A EP 2235246 A1 EP2235246 A1 EP 2235246A1
Authority
EP
European Patent Office
Prior art keywords
elevations
laundry drum
laundry
drum according
drum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP09706086A
Other languages
German (de)
French (fr)
Other versions
EP2235246B9 (en
EP2235246B1 (en
Inventor
Johannes Geyer
Stephan Sommer
Max Speckhart
Roland Vetter
Wilfried Wildung
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2235246A1 publication Critical patent/EP2235246A1/en
Application granted granted Critical
Publication of EP2235246B1 publication Critical patent/EP2235246B1/en
Publication of EP2235246B9 publication Critical patent/EP2235246B9/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal 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
    • 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
    • D06F37/06—Ribs, lifters, or rubbing means forming part of the receptacle

Definitions

  • the invention relates to a laundry drum for a laundry treatment machine with a drum shell having circumferentially distributed structures that arise from the cylindrical shape of the mounted in the laundry drum drum shell.
  • a laundry drum is known from DE 44 37 986 A1.
  • structures in the jacket sheet of a laundry drum in the form of staggered quadrangular or hexagonal arch surfaces are shown therein.
  • Such structures have been used in laundry drums mainly because they give the structured jacket sheet on the one hand a certain dimensional stability, which affects above all in a reduced acoustic tendency to oscillate.
  • such a structure also has a certain decorative effect.
  • the invention has for its object to find a casing sheet structure for a laundry drum described above, on the one hand has the advantageous properties of structures of the prior art, but in addition also provides a basis for their training for favorably influencing the mechanical laundry treatment during the rotary motion the drum.
  • this object is achieved by the characterizing part of claim 1 in such a way that the structures are formed from line-shaped elevations extending in the circumferential line and curved inwards.
  • Such surveys can in fact - as will be explained below - in form many ways so that they have a beneficial influence on the mechanical laundry treatment during the drum rotation. Since they also stabilize the drum shell to such an extent that the material used for the drum plate can be reduced to a minimum, that no acoustic oscillation tendencies are to be feared and that the surface properties of such a shaped lateral surface are ideal for the laundry treatment, an inventively designed laundry drum is an optimum represent for use in the laundry treatment.
  • the elevations can follow straight lines that extend at least partially parallel or not parallel to each other and / or the circumferential direction of the drum.
  • the line-shaped elevations may be closed or interrupted in the circumferential direction. They may have equal or unequal distances to each other and may be the same or at least partially unequal or different in width.
  • at least a part of the flood holes can be mounted in one or both flanks of the elevations. Other flood holes may be located in the areas of the drum shell that are outside the elevations.
  • 1 is a perspective view of the front side of a laundry treatment machine, with free insight into the laundry drum, the jacket plate is provided on the inside with linear elevations, 2 shows a cross section through a jacket plate parallel to the axial direction of the laundry drum with line-shaped elevations,
  • FIG. 3 shows a cross section as in FIG. 2 with other distances of the linear elevations
  • FIG. 4 shows the view from outside onto a jacket plate with in-phase wave-shaped elevations and a cross section through such a jacket plate parallel to the axis direction A-A of the laundry drum.
  • FIG. 4 outer view and cross section corresponding to FIG. 4 with unparallel and different wide undulating elevations
  • FIG. 6 external view and cross section corresponding to FIG. 4 with parallel and in-phase but unequal width undulating elevations
  • FIG. 6 external view and cross section corresponding to FIG. 4 with parallel and in-phase but unequal width undulating elevations
  • FIG. 7 outer view and cross section corresponding to FIG. 4 with curved, helically arranged and differently wide elevations
  • FIG. 9 outer view and cross section corresponding to FIG. 4 with antiphase and parallel wave-shaped elevations, FIG.
  • FIG. 10 outer view and cross section corresponding to FIG. 4 with projections arranged parallel and in opposite directions with wavy varied widths, FIG.
  • FIG. 11 outer view and cross section corresponding to FIG. 4 with wave-shaped elements arranged parallel to one another but offset from one another
  • FIG. 1 is shown as a laundry treatment machine, a washing machine, which is attached to the front side 1 feed opening 2 with the door removed gives an insight into the interior of the laundry drum 3.
  • a washing machine which is attached to the front side 1 feed opening 2 with the door removed gives an insight into the interior of the laundry drum 3.
  • It has a cylindrical drum shell 4, on the inside of several Wäschemit Meeting 5 are evenly distributed.
  • the drum shell has 4 inwardly bulging line-shaped elevations 6, which will be explained in more detail with reference to the following figures.
  • these elevations ensure that the drum shell becomes a structure which is resistant to mechanical vibration, thereby avoiding otherwise feared acoustic disturbances.
  • material can be saved with smaller wall thicknesses of the drum shell 4 and, as will be shown below, achieve a particularly gentle surface design which nevertheless produces an increased mechanical washing effect.
  • linear elevations 6 can assume a shape as shown in FIG. 2 or 3 when viewed in cross-section of the sheet of such a drum shell 4.
  • the elevation 6 gradually swings inward from the cylindrical shape of the region 7 of the drum shell 4, forms a soft ridge line 8 and also swings softly back into the cylindrical shape of the region 7.
  • the remaining in the cylindrical shape areas 7 can in a laundry treatment machine, which requires no fluid exchange for the treatment process, - as shown - remain closed.
  • flood holes In a laundry treatment machine, which exchanges liquids between the laundry, the drum interior and the laundry drum surrounding space for the treatment process -. B. in a washing machine -, can in the cylindrical areas so-called flood holes may be appropriate. Such flood holes are notorious, but not shown in Fig. 1 to 3 for reasons of simplicity.
  • the distances B of the elevations 6 in Fig. 2 are equal to each other, in contrast to the elevations 6 in Fig. 3, whose distances C and D are unequal. This may play a role in such treatment processes where the laundry within the drum is unevenly distributed during its rotation.
  • the fragments of drum shells 4 are shown as substantially flat flat bodies, which can be redesigned by forming into a cylinder into a laundry drum. Notwithstanding the examples in FIGS. 2 and 3, the elevations 6 also do not swing upwards gradually out of the cylindrical regions 7; because they are delimited to the areas 7 by a relatively sharp bending edge 9.
  • the elevations 6 and their arrangement to each other differ on the one hand from those of Figs. 2 and 3 on the other hand but also from one embodiment to another embodiment.
  • FIG. 4 shows a drum shell 4, on the inside of which bulge bulges 6 bulge in a closed circle along the peripheral line 40 and loop around the drum shell.
  • the ridge lines 10 of the elevations follow a similar to the sinusoidal vibration with a phase length P and a vibration width W. phase length P and vibration width W can be varied as needed and trial taking into account the mechanical washing action.
  • the areas 7 of the drum shell each contain a number of flood holes 11. If the laundry drum equipped therewith is not provided for a liquid-conducting laundry treatment machine, the flood holes 11 can be omitted. This applies equally to the drum shells below.
  • the drum shell 4 shown in Fig. 5 also has linear elevations 6. Adjacent areas 7 between the surveys but do not run parallel to each other. Their main axes are at an angle ⁇ «100 ° or ß « 80 ° to the drum axis AA, which deviates from the right angle.
  • phase length P and the oscillation width W in this example are similar to those of FIG. 4. Touch gene side, they can reverse their angular position ⁇ and ß and thus the elevations 6, which have the greatest width and height at the point of closest proximity of each of the adjacent areas 7, narrow again in the course. Instead, however, the elevations 6 may simply be limited in their length, and thus the areas 7 are connected between the boundaries.
  • the angular positions of the major axes of the regions 7 can - as of course, the phase lengths and vibration lengths - be varied according to need and trial.
  • the drum shell 4 in Fig. 6 is very similar to that in Fig. 4.
  • the phase lengths of the elevations 6, 16 and 26 are greater than in Fig. 4.
  • the mutually parallel regions have 7 different distances B, C. and D, so that the intervening bumps 6, 16 and 26 are different in width.
  • the elevations 6, 16 and 26 have almost the same heights with each other, so that the elevation 6 is perceived flatter than the elevations 16 and 26, the curvature of their curvature is only lower. Again, the same variations are possible as in the previous and in the following examples. This includes variations in the heights of the surveys 6, 16 and 26, respectively.
  • the elevations 18 have approximately the same length of phases P as the sinusoidal elevations 6 of FIG. 4.
  • the oscillation width W is slightly larger.
  • This type of elevations 18 are formed by zigzag-shaped cylindrical regions 7 of the drum shell 4. bordered elevations 18, whose ridge lines 19 also follow almost a zig-zag line. However, the sharp corners of a zigzag line are rounded.
  • the cylindrical regions 20 have no flood holes here. However, using a fluid interposed between the interior and the exterior of the drum would create flood holes in those areas 20.
  • the conditions are reversed compared to the example of FIG. 9.
  • the cylindrical portions 7 oscillate in the opposite phase, while the projections 6 become narrower and wider along the circumference.
  • the curvature of the elevations 6 remains constant along the circumferential line, the bulges 22 and 23 are sometimes higher and lower, so that alternately high and low bulges 22 and 23 are formed, which, in addition to the carriers 5 (FIG. Fig. 1) exert a mechanical effect on the laundry.
  • Fig. 12 still demonstrates how a drum shell 4 may look, whose elevations 25 are finite, so that each elevation 25 is surrounded by a cylindrical portion 27.
  • the attachment of a larger number of flood holes 11 is possible, so that the liquid exchange can be intensified.
  • the common Alternate contact of the laundry with different bulges of the elevations 25 also reinforces the mechanical washing action.
  • the regularly arranged in the cylindrical regions 7 flood holes 11 may deviating from the embodiments shown either additionally o- only in such flanks of elevations 6, 16, 18, 25, 26, 36, 46, 56 o- 66 attached be who put themselves while turning the laundry drum against the liquid flowing into it.
  • the flanks of the elevations 36, 46, 56, and 66 of FIG. 7 are ideally suited for this, because they have partial regions that are almost transverse to the moved liquid. But even those parts of the elevations in the other figures, which have at least one not too small skew angle with respect to the liquid movement, which will usually be the movement in the circumferential direction, may have flood holes 11 in these parts of their flanks.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Glanulating (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Abstract

A laundry drum for a laundry treating machine, wherein the laundry drum includes a drum cover that has a cylindrical shape and structures that are distributed in a circumferential direction of the drum cover. The structures project from the cylindrical shape of the drum cover that is mounted in the laundry drum. Further, the structures are formed from inwardly bulging linear elevations that extend along a circumferential line.

Description

Wäschetrommel für eine Wäschebehandlungsmaschine Laundry drum for a laundry treatment machine
[0001] Die Erfindung betrifft eine Wäschetrommel für eine Wäschebehandlungsmaschine mit einem Trommelmantel, der in Umfangshchtung verteilte Strukturen aufweist, die sich aus der Zylinderform des in der Wäschetrommel angebrachten Trommelmantels erheben. [0002] Eine derartige Wäschetrommel ist aus DE 44 37 986 A1 bekannt. Darin werden vor allem Strukturen im Mantelblech einer Wäschetrommel in Form von gegeneinander versetzten viereckigen oder sechseckigen Wölbflächen gezeigt. Solche Strukturen sind bei Wäschetrommeln vorwiegend deshalb zur Anwendung gekommen, weil sie einerseits dem strukturierten Mantelblech eine gewisse Formstabilität verleihen, die sich vor allem in einer geminderten akustischen Schwingneigung auswirkt. Andererseits hat aber eine solche Struktur auch eine gewisse dekorative Wirkung. Ein einmal vermuteter vorteilhafter Einfluss auf die mechanische Wäschebehandlung konnte dagegen nicht nachgewiesen werden.The invention relates to a laundry drum for a laundry treatment machine with a drum shell having circumferentially distributed structures that arise from the cylindrical shape of the mounted in the laundry drum drum shell. Such a laundry drum is known from DE 44 37 986 A1. In particular, structures in the jacket sheet of a laundry drum in the form of staggered quadrangular or hexagonal arch surfaces are shown therein. Such structures have been used in laundry drums mainly because they give the structured jacket sheet on the one hand a certain dimensional stability, which affects above all in a reduced acoustic tendency to oscillate. On the other hand, such a structure also has a certain decorative effect. On the other hand, it was not possible to prove once an advantageous influence on the mechanical laundry treatment that was suspected.
[0003] Der Erfindung liegt die Aufgabe zugrunde, für eine eingangs beschriebene Wäschetrommel eine Mantelblechstruktur zu finden, die einerseits die vorteilhaften Eigenschaften von Strukturen des Standes der Technik aufweist, zusätzlich aber auch Grundlagen schafft für deren Ausbildung zur vorteilhaften Beeinflussung der mechanischen Wäschebehandlung während der Drehbewegung der Trommel.The invention has for its object to find a casing sheet structure for a laundry drum described above, on the one hand has the advantageous properties of structures of the prior art, but in addition also provides a basis for their training for favorably influencing the mechanical laundry treatment during the rotary motion the drum.
[0004] Erfindungsgemäß wird diese Aufgabe durch das Kennzeichen des Anspru- ches 1 in der Weise gelöst, dass die Strukturen aus in der Umfangslinie sich erstreckenden, nach innen ausgewölbten, linienförmigen Erhebungen gebildet sind. Solche Erhebungen lassen sich nämlich - wie nachstehend noch erläutert werden wird - in vielerlei Hinsicht so ausbilden, dass sie während der Trommel rotation einen vorteilhaften Einfluss auf die mechanische Wäschebehandlung haben. Da sie den Trommelmantel außerdem in soweit stabilisieren, dass der Materialeinsatz für das Trommelblech auf ein Minimum reduzierbar ist, dass keine akustischen Schwingneigungen zu befürchten sind und dass die Oberflächeneigenschaften einer solchermaßen geformten Mantelfläche für die Wäschebehandlung geradezu ideal sind, wird eine erfindungsgemäß ausgebildete Wäschetrommel ein Optimum für den Einsatz in der Wäschebehandlung darstellen.[0004] According to the invention, this object is achieved by the characterizing part of claim 1 in such a way that the structures are formed from line-shaped elevations extending in the circumferential line and curved inwards. Such surveys can in fact - as will be explained below - in form many ways so that they have a beneficial influence on the mechanical laundry treatment during the drum rotation. Since they also stabilize the drum shell to such an extent that the material used for the drum plate can be reduced to a minimum, that no acoustic oscillation tendencies are to be feared and that the surface properties of such a shaped lateral surface are ideal for the laundry treatment, an inventively designed laundry drum is an optimum represent for use in the laundry treatment.
[0005] Vorteilhafte Weiterbildungen der erfindungsgemäßen Wäschetrommel sind in den Unteransprüchen angegeben. Deren Merkmale können einzeln oder in jeder beliebigen Kombination mit den Merkmalen des Anspruches 1 angewendet werden, ohne die Erfindung zu verlassen.Advantageous developments of the laundry drum according to the invention are specified in the subclaims. Their features can be applied individually or in any combination with the features of claim 1, without departing from the invention.
[0006] So können die Erhebungen geraden Linien folgen, die wenigstens partiell parallel oder nicht parallel zueinander und/oder zur Umfangsrichtung der Trommel sich erstrecken. Die linienförmigen Erhebungen können in Umfangsrichtung geschlossen oder unterbrochen sein. Sie können zueinander gleiche oder ungleiche Abstände haben und gleich oder wenigstens teilweise ungleich oder unterschiedlich breit sein. Sie können Wellenlinien, z. B. Sinuswellen, Zick-Zack-Linien oder Schraubenlinien folgen und in Bezug auf die Achsrichtung der Trommel gesehen zueinander gleichphasig oder ge- geneinander versetzt sein. Bei einer Wäschetrommel mit Flutlöchern im Trommelmantel kann wenigstens ein Teil der Flutlöcher in jeweils einer oder in beiden Flanken der Erhebungen angebracht sein. Andere Flutlöcher können in den Arealen des Trommelmantels angebracht sein, die außerhalb der Erhebungen liegen.Thus, the elevations can follow straight lines that extend at least partially parallel or not parallel to each other and / or the circumferential direction of the drum. The line-shaped elevations may be closed or interrupted in the circumferential direction. They may have equal or unequal distances to each other and may be the same or at least partially unequal or different in width. You can wave lines, z. B. sine waves, zig-zag lines or helical lines and seen in relation to the axial direction of the drum to be in phase with each other or against each other. In a laundry drum with flood holes in the drum shell, at least a part of the flood holes can be mounted in one or both flanks of the elevations. Other flood holes may be located in the areas of the drum shell that are outside the elevations.
[0007] Anhand von in der Zeichnung dargestellten Ausführungsbeispielen ist die Erfindung näher erläutert. Es zeigenOn the basis of embodiments shown in the drawings, the invention is explained in more detail. Show it
Fig. 1 eine perspektivische Ansicht der Frontseite einer Wäschebehandlungsmaschine, mit freiem Einblick in die Wäschetrommel, deren Mantelblech auf der Innenseite mit linienförmigen Erhebungen versehen ist, Fig. 2 einen Querschnitt durch ein Mantelblech parallel zur Achsrichtung der Wäschetrommel mit linienförmigen Erhebungen,1 is a perspective view of the front side of a laundry treatment machine, with free insight into the laundry drum, the jacket plate is provided on the inside with linear elevations, 2 shows a cross section through a jacket plate parallel to the axial direction of the laundry drum with line-shaped elevations,
Fig. 3 einen Querschnitt wie in Fig. 2 mit anderen Abständen der linienförmigen Erhebungen, Fig. 4 die Ansicht von Außen auf ein Mantelblech mit phasengleichen wellenförmigen Erhebungen und einen Querschnitt durch ein solches Mantelblech parallel zur Achsrichtung A-A der Wäschetrommel,3 shows a cross section as in FIG. 2 with other distances of the linear elevations, FIG. 4 shows the view from outside onto a jacket plate with in-phase wave-shaped elevations and a cross section through such a jacket plate parallel to the axis direction A-A of the laundry drum.
Fig. 5 Außenansicht und Querschnitt entsprechend Fig. 4 mit unparallelen und unterschiedliche breiten wellenförmigen Erhebungen, Fig. 6 Außenansicht und Querschnitt entsprechend Fig. 4 mit parallelen und gleichphasigen aber ungleich breiten wellenförmigen Erhebungen,4 outer view and cross section corresponding to FIG. 4 with unparallel and different wide undulating elevations, FIG. 6 external view and cross section corresponding to FIG. 4 with parallel and in-phase but unequal width undulating elevations, FIG.
Fig. 7 Außenansicht und Querschnitt entsprechend Fig. 4 mit gekrümmten, schraubenförmig angeordneten und unterschiedlich breiten Erhe- bungen,FIG. 7 outer view and cross section corresponding to FIG. 4 with curved, helically arranged and differently wide elevations, FIG.
Fig. 8 Außenansicht und Querschnitt entsprechend Fig. 4 mit zueinander phasengleichen und parallel angeordneten sowie gleich breiten Erhebungen in Zick-Zack-Linien,4 outer view and cross section corresponding to FIG. 4 with in-phase and parallel arranged and equally wide elevations in zigzag lines,
Fig. 9 Außenansicht und Querschnitt entsprechend Fig. 4 mit zueinander gegenphasig und parallel angeordneten wellenförmigen Erhebungen,9 outer view and cross section corresponding to FIG. 4 with antiphase and parallel wave-shaped elevations, FIG.
Fig. 10 Außenansicht und Querschnitt entsprechend Fig. 4 mit parallel und gegenphasig zueinander angeordneten Erhebungen mit wellenförmig variierter Breite,10 outer view and cross section corresponding to FIG. 4 with projections arranged parallel and in opposite directions with wavy varied widths, FIG.
Fig. 11 Außenansicht und Querschnitt entsprechend Fig. 4 mit parallel zu- einander aber gegeneinander versetzt angeordneten wellenförmigenFIG. 11 outer view and cross section corresponding to FIG. 4 with wave-shaped elements arranged parallel to one another but offset from one another
Erhebungen, Fig. 12 Außenansicht und Querschnitt entsprechend Fig. 4 mit parallel und phasengleich zueinander angeordneten wellenförmigen Erhebungsabschnitten jeweils begrenzte Länge, die gegeneinander versetzt angeordnet sind. [0008] In Fig. 1 ist als eine Wäschebehandlungsmaschine eine Waschmaschine dargestellt, deren an der Frontseite 1 angebrachte Beschickungsöffnung 2 bei abgenommener Tür einen Einblick in das Innere der Wäschetrommel 3 gewährt. Sie hat einen zylindrischen Trommelmantel 4, an deren Innenseite mehrere Wäschemitnehmer 5 gleichmäßig verteilt sind. Außerdem hat der Trommelmantel 4 nach innen ausgewölbte linienförmige Erhebungen 6, die anhand der nachfolgenden Figuren noch näher erläutert werden. Diese Erhebungen sorgen einerseits dafür, dass der Trommelmantel ein mechanisch schwingungssteifes Gebilde wird und dadurch ansonsten zu befürchtende akustische Störungen ausbleiben. Andererseits lässt sich durch den erheblichen Zuge- winn an Steifigkeit Material bei geringeren Wandstärken des Trommelmantels 4 einspa- ren und - wie weiter unten noch gezeigt werden wird - eine besonders Wäsche schonende Oberflächengestaltung erzielen, die dennoch eine gesteigerte mechanische Waschwirkung erzeugt.surveys Fig. 12 outer view and cross section corresponding to FIG. 4 with parallel and in phase with each other arranged wave-shaped elevation sections each limited length, which are arranged offset from each other. In Fig. 1 is shown as a laundry treatment machine, a washing machine, which is attached to the front side 1 feed opening 2 with the door removed gives an insight into the interior of the laundry drum 3. It has a cylindrical drum shell 4, on the inside of several Wäschemitnehmer 5 are evenly distributed. In addition, the drum shell has 4 inwardly bulging line-shaped elevations 6, which will be explained in more detail with reference to the following figures. On the one hand, these elevations ensure that the drum shell becomes a structure which is resistant to mechanical vibration, thereby avoiding otherwise feared acoustic disturbances. On the other hand, due to the considerable increase in rigidity, material can be saved with smaller wall thicknesses of the drum shell 4 and, as will be shown below, achieve a particularly gentle surface design which nevertheless produces an increased mechanical washing effect.
[0009] Beispielweise können linienförmige Erhebungen 6 gemäß Fig. 1 im Querschnitt des Blechs eines solchen Trommelmantels 4 gesehen eine in Fig. 2 oder 3 dar- gestellte Form annehmen. Dabei schwingt die Erhebung 6 allmählich aus der Zylinderform des Bereichs 7 des Trommelmantels 4 nach innen aus, bildet eine weiche Firstlinie 8 und schwingt ebenso weich in die Zylinderform des Bereichs 7 zurück. Die in der Zylinderform verbleibenden Bereiche 7 können bei einer Wäschebehandlungsmaschine, die zum Behandlungsprozess keinen Flüssigkeitsaustausch benötigt, - wie dargestellt - geschlossen bleiben.For example, as shown in FIG. 1, linear elevations 6 can assume a shape as shown in FIG. 2 or 3 when viewed in cross-section of the sheet of such a drum shell 4. In this case, the elevation 6 gradually swings inward from the cylindrical shape of the region 7 of the drum shell 4, forms a soft ridge line 8 and also swings softly back into the cylindrical shape of the region 7. The remaining in the cylindrical shape areas 7 can in a laundry treatment machine, which requires no fluid exchange for the treatment process, - as shown - remain closed.
[0010] In einer Wäschebehandlungsmaschine, die für den Behandlungsprozess Flüssigkeiten zwischen der Wäsche, dem Trommelinnenraum und dem die Wäschetrommel umgebenden Raum austauscht - z. B. in einer Waschmaschine -, können in den zylindrischen Bereichen sogenannte Flutlöcher angebracht sein. Solche Flutlöcher sind notorisch, in Fig. 1 bis 3 aber aus Vereinfachungsgründen nicht dargestellt.In a laundry treatment machine, which exchanges liquids between the laundry, the drum interior and the laundry drum surrounding space for the treatment process -. B. in a washing machine -, can in the cylindrical areas so-called flood holes may be appropriate. Such flood holes are notorious, but not shown in Fig. 1 to 3 for reasons of simplicity.
[0011] Dabei sind die Abstände B der Erhebungen 6 in Fig. 2 untereinander gleich groß, im Gegensatz zu den Erhebungen 6 in Fig. 3, deren Abstände C und D ungleich sind. Dies kann eine Rolle in solchen Behandlungsprozessen spielen, bei denen sich die Wäsche innerhalb der Trommel während deren Rotation ungleichförmig verteilt.The distances B of the elevations 6 in Fig. 2 are equal to each other, in contrast to the elevations 6 in Fig. 3, whose distances C and D are unequal. This may play a role in such treatment processes where the laundry within the drum is unevenly distributed during its rotation.
[0012] In den folgenden Figuren sind die Fragmente von Trommelmänteln 4 als im Wesentlichen ebene flache Körper dargestellt, die durch eine Formung zu einem Zylinder in eine Wäschetrommel umgestaltet werden können. Abweichend zu den Beispielen in Fig. 2 und 3 schwingen die Erhebungen 6 auch nicht allmählich aus den zylinderförmigen Bereichen 7 nach innen empor; denn sie grenzen sich zu den Bereichen 7 durch eine relativ scharfe Biegekante 9 ab. Die Erhebungen 6 bzw. deren Anordnung zueinander unterscheiden sich einerseits von denen der Fig. 2 und 3 andererseits aber auch von Ausführungsbeispiel zu Ausführungsbeispiel untereinander. [0013] So zeigt Fig. 4 einen Trommelmantel 4, an dessen Innenseite sich linienför- mige Erhebungen 6 aufwölben und entlang der Umfangslinie 40 in einem geschlossenen Kreis den Trommelmantel umschlingen. Die Firstlinien 10 der Erhebungen folgen dabei einer der Sinusform ähnlichen Schwingung mit einer Phasenlänge P und einer Schwingungsweite W. Phasenlänge P und Schwingungsweite W können nach Bedarf und Versuch unter Berücksichtigung der mechanischen Waschwirkung variiert werden. Die Bereiche 7 des Trommelmantels enthalten jeweils eine Reihe von Flutlöchern 11. Sofern die damit ausgerüstete Wäschetrommel nicht für eine Flüssigkeit führende Wäschebehandlungsmaschine vorgesehen ist, können die Flutlöcher 11 entfallen. Dies gilt gleichermaßen für die im Folgenden dargestellten Trommelmäntel. [0014] Der in Fig. 5 dargestellte Trommelmantel 4 hat ebenfalls linienförmige Erhebungen 6. Benachbarte Bereiche 7 zwischen den Erhebungen verlaufen aber nicht parallel zueinander. Ihre Hauptachsen stehen in einem Winkel α « 100° bzw. ß « 80° zur Trommelachse A-A, der vom rechten Winkel abweicht. Phasenlänge P und Schwingungsweite W ähneln in diesem Beispiel dem der Fig. 4. Bevor sich die Bereiche 7 ge- genseitig berühren, können sie ihre Winkelstellung α bzw. ß umkehren und damit die Erhebungen 6, die an der Stelle der größten Nähe jeweils benachbarter Bereiche 7 die größte Breite und Höhe haben, im weiteren Verlauf wieder einengen. Stattdessen können aber die Erhebungen 6 in ihrer Länge einfach begrenzt sein und dadurch die Berei- che 7 zwischen den Begrenzungen zusammenhängen. Die Winkelstellungen der Hauptachsen der Bereiche 7 können - wie natürlich auch die Phasenlängen und Schwingungsweiten - nach Bedarf und Versuch variiert werden.In the following figures, the fragments of drum shells 4 are shown as substantially flat flat bodies, which can be redesigned by forming into a cylinder into a laundry drum. Notwithstanding the examples in FIGS. 2 and 3, the elevations 6 also do not swing upwards gradually out of the cylindrical regions 7; because they are delimited to the areas 7 by a relatively sharp bending edge 9. The elevations 6 and their arrangement to each other differ on the one hand from those of Figs. 2 and 3 on the other hand but also from one embodiment to another embodiment. FIG. 4 shows a drum shell 4, on the inside of which bulge bulges 6 bulge in a closed circle along the peripheral line 40 and loop around the drum shell. The ridge lines 10 of the elevations follow a similar to the sinusoidal vibration with a phase length P and a vibration width W. phase length P and vibration width W can be varied as needed and trial taking into account the mechanical washing action. The areas 7 of the drum shell each contain a number of flood holes 11. If the laundry drum equipped therewith is not provided for a liquid-conducting laundry treatment machine, the flood holes 11 can be omitted. This applies equally to the drum shells below. The drum shell 4 shown in Fig. 5 also has linear elevations 6. Adjacent areas 7 between the surveys but do not run parallel to each other. Their main axes are at an angle α «100 ° or ß« 80 ° to the drum axis AA, which deviates from the right angle. The phase length P and the oscillation width W in this example are similar to those of FIG. 4. Touch gene side, they can reverse their angular position α and ß and thus the elevations 6, which have the greatest width and height at the point of closest proximity of each of the adjacent areas 7, narrow again in the course. Instead, however, the elevations 6 may simply be limited in their length, and thus the areas 7 are connected between the boundaries. The angular positions of the major axes of the regions 7 can - as of course, the phase lengths and vibration lengths - be varied according to need and trial.
[0015] Der Trommelmantel 4 in Fig. 6 ähnelt sehr stark demjenigen in Fig. 4. Hier sind die Phasenlängen der Erhebungen 6, 16 und 26 größer als in Fig. 4. Außerdem haben die parallel zueinander stehenden Bereiche 7 unterschiedliche Abstände B, C und D, so dass die dazwischen liegenden Erhebungen 6, 16 und 26 unterschiedlich breit sind. Die Erhebungen 6, 16 und 26 haben untereinander nahezu dieselben Höhen, so dass die Erhebung 6 flacher empfunden wird als die Erhebungen 16 und 26, die Krümmung ihre Wölbung jedoch nur geringer ist. Auch hier sind dieselben Variationen möglich wie in den vorausgegangen und in den folgenden Beispielen. Dazu gehören auch Variationen der Höhen der Erhebungen 6 bzw. 16 und 26.The drum shell 4 in Fig. 6 is very similar to that in Fig. 4. Here, the phase lengths of the elevations 6, 16 and 26 are greater than in Fig. 4. In addition, the mutually parallel regions have 7 different distances B, C. and D, so that the intervening bumps 6, 16 and 26 are different in width. The elevations 6, 16 and 26 have almost the same heights with each other, so that the elevation 6 is perceived flatter than the elevations 16 and 26, the curvature of their curvature is only lower. Again, the same variations are possible as in the previous and in the following examples. This includes variations in the heights of the surveys 6, 16 and 26, respectively.
[0016] Demgegenüber folgen die Erhebungen 36, 46 und 56 in Fig. 7 einer ganz anderen Gesetzmäßigkeit. Wie im Bereich 77 zu erkennen ist, erhebt sich eine Erhebung 66 allmählich von der Randlinie 17 und folgt mit ihrer Firstlinie 10 einer Schrau- benlinie. Auf diese Weise streben die Firstlinien aller Erhebungen 36, 46, 56 und 66 immer weiter auseinander und verbreitern sich die Erhebungen 36, 46, 56 und 66, bis sie am anderen Rand des Trommelmantels 4 steil auftreffen und enden. Dieses Ausführungsbeispiel dürfte vor allem in solchen Wäschebehandlungsmaschinen von Interesse sein, bei denen durch die Steuerung der Trommeldrehrichtung Bewegungen der Wä- sehe entlang der Drehachse der Wäschetrommel gefördert werden sollen.In contrast, follow the surveys 36, 46 and 56 in Fig. 7 a very different law. As can be seen in region 77, an elevation 66 gradually rises from the edge line 17 and follows with its ridge line 10 a screw line. In this way, the ridge lines of all bumps 36, 46, 56 and 66 continue to diverge and broaden the bumps 36, 46, 56 and 66 until they impinge and end sharply at the other edge of the drum mantle 4. This embodiment is likely to be of particular interest in such laundry treatment machines in which movements of the laundry along the axis of rotation of the laundry drum are to be promoted by the control of the drum rotation direction.
[0017] Bei einem Ausführungsbeispiel der Fig. 8 haben die Erhebungen 18 etwa gleich lange Phasen P wie die sinuslinienförmigen Erhebungen 6 der Fig. 4. Die Schwingungsweite W ist etwas größer. Bei dieser Art der Erhebungen 18 handelt es sich um durch zick-zack-förmige zylindrische Bereiche 7 des Trommelmantels 4 einge- grenzte Erhebungen 18, deren Firstlinien 19 ebenfalls nahezu einer Zick-Zack-Linie folgen. Allerdings sind die scharfen Ecken einer Zick-Zack-Linie abgerundet. Die zylinderförmigen Bereiche 20 haben hier keine Flutlöcher. Bei Anwendung einer zwischen dem Innenraum und dem Außenraum der Trommel wechselnder Flüssigkeit wären allerdings Flutlöcher in diesen Bereichen 20 angebracht.In an embodiment of FIG. 8, the elevations 18 have approximately the same length of phases P as the sinusoidal elevations 6 of FIG. 4. The oscillation width W is slightly larger. This type of elevations 18 are formed by zigzag-shaped cylindrical regions 7 of the drum shell 4. bordered elevations 18, whose ridge lines 19 also follow almost a zig-zag line. However, the sharp corners of a zigzag line are rounded. The cylindrical regions 20 have no flood holes here. However, using a fluid interposed between the interior and the exterior of the drum would create flood holes in those areas 20.
[0018] Der Trommelmantel gemäß Fig. 9 hat ebenfalls sinuslinienförmige Erhebungen 6 wie diejenigen in Fig. 4. Allerdings wechseln die Phasenlagen benachbarter Erhebungen 6, so dass die dazwischen liegenden zylindrischen Bereiche 7 in derselben Sinuslinienform gestaltete schmale und breite Bereiche aufweisen, die mit mehr oder weniger Flutlöchern 11 pro Umfangslinienabschnitt bestückt sind. Diese Konsequenz könnte bei der Auswahl der Varianten entscheidend sein. Die Phasenverschiebung zwischen den Erhebungen 6 muss nicht - wie hier dargestellt - um eine halbe Phasenlänge gewählt sein. Bei einer kleineren oder größeren Phasenverschiebung entstehen zylindrische Bereiche 7, die zwar ebenfalls entlang der Umfangslinie schmaler und breiter werden. Sie enthalten dann aber ebenfalls geschwungene Bereiche, die auf eine größere Länge hin linienförmig sind und nur einer Flutlochreihe Platz bieten. Die breiteren Bereiche sind demgegenüber schmaler als in Fig. 9. Eine solche Variante zeigt Fig. 11.9 has also sinusoidal elevations 6 as those in Fig. 4. However, the phase positions of adjacent elevations 6 change, so that the intermediate cylindrical regions 7 in the same sinusoidal shape designed narrow and wide areas, with more or less flood holes 11 per perimeter section are stocked. This consequence could be decisive in the selection of variants. The phase shift between the elevations 6 need not - as shown here - be selected by half a phase length. At a smaller or larger phase shift arise cylindrical regions 7, although also along the circumferential line narrower and wider. But then they also contain curved areas that are linear over a longer length and offer space only one row of flood holes. By contrast, the wider regions are narrower than in FIG. 9. Such a variant is shown in FIG. 11.
[0019] Beim Ausführungsbeispiel der Fig. 10 sind die Verhältnisse gegenüber dem Beispiel der Fig. 9 umgedreht. Hier schwingen die zylindrischen Bereiche 7 gegenpha- sig, während die Erhebungen 6 entlang der Umfangslinie schmaler und breiter werden. Entsprechend sind die Auswölbungen 22 und 23 bei gleich bleibender Krümmung der Erhebungen 6 entlang der Umfangslinie mal höher und mal niedriger, so dass abwechselnd hohe und niedrige Auswölbungen 22 und 23 entstehen, die bei Drehung der Trommel zusätzlich zu den in der Trommel angeordneten Mitnehmern 5 (Fig. 1 ) eine mechanische Wirkung auf die Wäsche ausüben.In the embodiment of FIG. 10, the conditions are reversed compared to the example of FIG. 9. Here, the cylindrical portions 7 oscillate in the opposite phase, while the projections 6 become narrower and wider along the circumference. Correspondingly, while the curvature of the elevations 6 remains constant along the circumferential line, the bulges 22 and 23 are sometimes higher and lower, so that alternately high and low bulges 22 and 23 are formed, which, in addition to the carriers 5 (FIG. Fig. 1) exert a mechanical effect on the laundry.
[0020] Fig. 12 demonstriert noch, wie ein Trommelmantel 4 aussehen kann, dessen Erhebungen 25 endlich sind, so dass jede Erhebung 25 von einem zylindrischen Bereich 27 umgeben ist. Dadurch wird die Anbringung von einer größeren Zahl von Flutlöchern 11 möglich, damit der Flüssigkeitsaustausch intensiviert werden kann. Die häufig Abwechselnde Berührung der Wäsche mit unterschiedlichen Auswölbungen der Erhebungen 25 verstärkt außerdem die mechanische Waschwirkung.Fig. 12 still demonstrates how a drum shell 4 may look, whose elevations 25 are finite, so that each elevation 25 is surrounded by a cylindrical portion 27. As a result, the attachment of a larger number of flood holes 11 is possible, so that the liquid exchange can be intensified. The common Alternate contact of the laundry with different bulges of the elevations 25 also reinforces the mechanical washing action.
[0021] Die regelmäßig in den zylindrischen Bereichen 7 angeordneten Flutlöcher 11 können abweichend von den gezeigten Ausführungsbeispielen entweder zusätzlich o- der ausschließlich in solchen Flanken von Erhebungen 6, 16, 18, 25, 26, 36, 46, 56 o- der 66 angebracht sein, die sich beim Drehen der Wäschetrommel gegen die in ihr flutende Flüssigkeit stellen. Beispielsweise sind dazu die Flanken der Erhebungen 36, 46, 56, und 66 der Fig. 7 bestens geeignet, weil sie Teilbereiche aufweisen, die nahezu quer zur bewegten Flüssigkeit stehen. Aber auch diejenigen Teile der Erhebungen in den anderen Figuren, die wenigstens einen nicht zu kleinen Schrägwinkel in Bezug auf die Flüssigkeitsbewegung haben, das wird in der Regel die Bewegung in Umfangsrich- tung sein, können in diesen Teilen ihrer Flanken Flutlöcher 11 aufweisen. The regularly arranged in the cylindrical regions 7 flood holes 11 may deviating from the embodiments shown either additionally o- only in such flanks of elevations 6, 16, 18, 25, 26, 36, 46, 56 o- 66 attached be who put themselves while turning the laundry drum against the liquid flowing into it. For example, the flanks of the elevations 36, 46, 56, and 66 of FIG. 7 are ideally suited for this, because they have partial regions that are almost transverse to the moved liquid. But even those parts of the elevations in the other figures, which have at least one not too small skew angle with respect to the liquid movement, which will usually be the movement in the circumferential direction, may have flood holes 11 in these parts of their flanks.

Claims

Pate nta ns p rü c h e Godfathers
1. Wäschetrommel für eine Wäschebehandlungsmaschine mit einem Trommel- mantel (4), der in Umfangsrichtung verteilte Strukturen (6) aufweist, die sich aus der Zylinderform des in der Wäschetrommel angebrachten Trommelmantels (4) erheben, dadurch gekennzeichnet, dass die Strukturen aus in der Umfangsli- nie (40) sich erstreckenden, nach innen ausgewölbten, linienförmigen Erhebungen (6) gebildet sind.A laundry drum for a laundry treating machine comprising a drum shell (4) having circumferentially distributed structures (6) rising from the cylindrical shape of the drum shell (4) mounted in the laundry drum, characterized in that the structures are formed in Peripheral line (40) extending, inwardly bulging, linear elevations (6) are formed.
2. Wäschetrommel nach Anspruch 1 , dadurch gekennzeichnet, dass die linienförmigen Erhebungen (6) gerade sind.2. laundry drum according to claim 1, characterized in that the line-shaped elevations (6) are straight.
3. Wäschetrommel nach Anspruch 2, dadurch gekennzeichnet, dass sich die Erhebungen (6, 16, 18, 25, 26) parallel zur Umfangsrichtung erstrecken.3. laundry drum according to claim 2, characterized in that the elevations (6, 16, 18, 25, 26) extend parallel to the circumferential direction.
4. Wäschetrommel nach Anspruch 2, dadurch gekennzeichnet, dass die Erhebun- gen (6, 16, 18, 26) in Umfangsrichtung (40) geschlossen sind.4. laundry drum according to claim 2, characterized in that the elevations gene (6, 16, 18, 26) in the circumferential direction (40) are closed.
5. Wäschetrommel nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass die Erhebungen (6, 16, 26) wenigstens teilweise voneinander unterschiedliche Abstände aufweisen.5. laundry drum according to one of claims 2 to 4, characterized in that the elevations (6, 16, 26) at least partially mutually different distances.
6. Wäschetrommel nach Anspruch 1 , dadurch gekennzeichnet, dass die Erhebun- gen (6, 16, 26, 26, 46, 56, 66) sich wenigstens auf einem Teil ihrer Länge nicht parallel zur Umfangsrichtung (40) erstrecken.6. A washing drum according to claim 1, characterized in that the elevations (6, 16, 26, 26, 46, 56, 66) do not extend parallel to the circumferential direction (40) over at least part of their length.
7. Wäschetrommel nach Anspruch 8, dadurch gekennzeichnet, dass sich die Erhebungen (36, 46, 56, 66) schraubenförmig in Umfangsrichtung (40) erstrecken.7. laundry drum according to claim 8, characterized in that the elevations (36, 46, 56, 66) extend helically in the circumferential direction (40).
8. Wäschetrommel nach Anspruch 8, dadurch gekennzeichnet, dass die Erhebun- gen (18) eine Zick-Zack-Linie bilden. 8. laundry drum according to claim 8, characterized in that the surveys gene (18) form a zig-zag line.
9. Wäschetrommel nach Anspruch 8, dadurch gekennzeichnet, dass die linienför- migen Erhebungen (6, 16, 25, 26) einer Wellenform folgen.9. laundry drum according to claim 8, characterized in that the linear surveys (6, 16, 25, 26) follow a waveform.
10. Wäschetrommel nach Anspruch 11 , dadurch gekennzeichnet, dass die Wellenform einer Sinuswelle wenigstens ähnelt.10. laundry drum according to claim 11, characterized in that the waveform of a sine wave is at least similar.
11. Wäschetrommel nach einem der Ansprüche 10 bis 12, dadurch gekennzeichnet, dass die Amplitude (W) der Zick-Zack-Linie oder Wellenform in gleicher Größenordnung liegt wie ihre Periode (P).11. laundry drum according to one of claims 10 to 12, characterized in that the amplitude (W) of the zig-zag line or waveform in the same order of magnitude as their period (P).
12. Wäschetrommel nach einem der Ansprüche 10 bis 13, dadurch gekennzeichnet, dass in Achsrichtung (A-A) der Wäschetrommel (3) gesehen benachbarte Erhebungen (6, 16, 25, 26) sich parallel in Umfangshchtung (40) erstrecken.12. laundry drum according to one of claims 10 to 13, characterized in that viewed in the axial direction (A-A) of the laundry drum (3) adjacent elevations (6, 16, 25, 26) extend parallel in Umfangsgehchtung (40).
13. Wäschetrommel nach einem der Ansprüche 10 bis 13, dadurch gekennzeichnet, dass benachbarte Erhebungen (6) sich gegenläufig in Umfangsrichtung (40) erstrecken.13. laundry drum according to one of claims 10 to 13, characterized in that adjacent elevations (6) extend in opposite directions in the circumferential direction (40).
14. Wäschetrommel nach einem der Ansprüche 10 bis 13, dadurch gekennzeich- net, dass benachbarte Erhebungen (6) sich in Achsrichtung (A-A) der Wäschetrommel (3) gegeneinander versetzt in Umfangsrichtung (40) erstrecken.14. Laundry drum according to one of claims 10 to 13, characterized marked, that adjacent elevations (6) in the axial direction (A-A) of the laundry drum (3) offset from each other in the circumferential direction (40) extend.
15. Wäschetrommel nach einem der Ansprüche 10 bis 16, dadurch gekennzeichnet, dass die Erhebungen (6, 16, 26) wenigstens teilweise unterschiedliche Abstände zueinander aufweisen.15. laundry drum according to one of claims 10 to 16, characterized in that the elevations (6, 16, 26) at least partially have different distances from each other.
16. Wäschetrommel nach einem der Ansprüche 2 bis 15, dadurch gekennzeichnet, dass die Erhebungen (25, 36, 46, 56, 66) endliche Längen aufweisen und benachbarte Erhebungen in Umfangsrichtung (40) gegeneinander versetzt sind.16. laundry drum according to one of claims 2 to 15, characterized in that the elevations (25, 36, 46, 56, 66) have finite lengths and adjacent elevations in the circumferential direction (40) are offset from each other.
17. Wäschetrommel nach einem der Ansprüche 2 bis 16, dadurch gekennzeichnet, dass die linienförmigen Erhebungen (6, 16, 26, 36, 46, 56, 66) wenigstens teil- weise unterschiedlich breit sind. 17. laundry drum according to one of claims 2 to 16, characterized in that the line-shaped elevations (6, 16, 26, 36, 46, 56, 66) are at least partially different widths.
18. Wäschetrommel mit Flutlöchern (11 ) im Trommelmantel (4) nach einem der vorstehenden Ansprüche, dadurch gekennzeichnet, dass wenigstens ein Teil der Flutlöcher (11 ) in jeweils einer oder beiden Flanken der Erhebungen angebracht sind. 18. laundry drum with flood holes (11) in the drum shell (4) according to any one of the preceding claims, characterized in that at least a part of the flood holes (11) are mounted in one or both flanks of the elevations.
EP09706086A 2008-01-29 2009-01-20 Laundry drum for a laundry treating machine Active EP2235246B9 (en)

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DE102008006511A DE102008006511A1 (en) 2008-01-29 2008-01-29 Laundry drum for a laundry treatment machine
PCT/EP2009/050599 WO2009095334A1 (en) 2008-01-29 2009-01-20 Laundry drum for a laundry treating machine

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ATE510949T1 (en) 2011-06-15
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US8720235B2 (en) 2014-05-13
EA017540B1 (en) 2013-01-30

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