EP3611297B1 - Tambour de lavage pour une machine de traitement du linge - Google Patents

Tambour de lavage pour une machine de traitement du linge Download PDF

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Publication number
EP3611297B1
EP3611297B1 EP19190069.5A EP19190069A EP3611297B1 EP 3611297 B1 EP3611297 B1 EP 3611297B1 EP 19190069 A EP19190069 A EP 19190069A EP 3611297 B1 EP3611297 B1 EP 3611297B1
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EP
European Patent Office
Prior art keywords
fine structure
laundry
drum
main orientation
drum shell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP19190069.5A
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German (de)
English (en)
Other versions
EP3611297A1 (fr
Inventor
Jürgen Markgraf
Franz Aring
Heinz-Theo Bellmann
Manfred Buchmann
Andreas Schröder
Andre Treptow
Alexander Wiens
Heinrich Hollenhorst
Wojciech Golabek
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.)
Miele und Cie KG
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Miele und Cie KG
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Application filed by Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP3611297A1 publication Critical patent/EP3611297A1/fr
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02—Rotary receptacles, e.g. drums
    • 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

Definitions

  • the invention relates to a laundry drum for a laundry treatment machine with a drum shell which has a structure on an inside facing the laundry during laundry treatment, the structure being designed as at least one fine structure.
  • Laundry drums for laundry treatment machines such as washing machines, tumble dryers or combination devices with washing and drying functions, are already known in many embodiments. It is known to design the drums with structures which can generally be referred to as a coarse structure.
  • a laundry drum for a laundry treatment machine with a drum shell which has structures distributed in the circumferential direction that rise from the cylindrical shape of the drum shell mounted in the laundry drum, the structures being formed from inwardly curved, linear elevations extending along the circumference.
  • The also shows similarly developed structures DE 10 2008 009 141 A1 , the structures here being formed transversely to the circumference of the laundry drum.
  • a drum designed in this way should have a positive effect on the mechanical laundry treatment during the rotary movement of the laundry drum.
  • a laundry drum for a washing machine which has a structure in the drum jacket surface with depressions arranged next to one another in the form of square pyramids. The tips of the respective pyramids point outwards from the inner surface of the laundry drum. The depressions are each formed with a hole.
  • a washing drum designed in this way is intended to have a positive effect on the gentler treatment in a spin-dry process.
  • the drum shell known therefrom has embossings in the form of a honeycomb-shaped vaulted structure, the honeycomb base surfaces of which are shaped towards the outside of the drum and whose adjacent edge contours of the honeycombs are directed with their curved edges towards the inside of the drum and thus form carrier elements for the laundry in the rotating drum.
  • a washing machine with a laundry drum arranged in a tub according to the preamble of claim 1 in which the laundry drum has a fine structure on the inside facing the laundry.
  • This fine structure is formed by a coating.
  • the drum shell is formed with a coating on the outside facing the tub and on the inside facing the laundry.
  • the coating has hydrophilic properties.
  • the layer thickness is specified here with a maximum of 10 ⁇ m.
  • a roughness value of the layer is given as a maximum of 2 ⁇ m.
  • Such a coated laundry drum is intended to reduce the formation of biofilm.
  • the invention thus poses the problem of specifying a laundry drum for a laundry treatment machine with a drum shell, in which the laundry is even better protected against abrasion or the like.
  • the advantage that can be achieved with the invention is, in particular, that the laundry is subject to less abrasion, that is to say less mechanical stress, during the laundry treatment in the laundry drum.
  • the main orientation of the at least one fine structure means a main alignment of the fine structure in relation to the entirety of the fine structure on the entire inside of the drum shell facing the laundry.
  • the at least one fine structure is parallel to the main orientation of the fine structure by a roughness depth R z less than or equal to half the roughness depth R z at a 90 ° angle to the main orientation of the fine structure, particularly preferably less than or equal to 1 / 5 the roughness depth R Z at a 90 ° angle to the main orientation of the fine structure is defined.
  • the main orientation of the at least one fine structure is made even more prominent.
  • this reduces the roughness of the fine structure in its main orientation.
  • the abrasion of the laundry is further reduced, so that the laundry is even better protected during the laundry treatment in the laundry drum.
  • the at least one fine structure can be freely selected within wide, suitable limits in terms of type, dimensioning, main orientation, number and arrangement.
  • the at least one fine structure is arranged distributed only in one sub-area or several sub-areas of the inside of the drum shell.
  • the at least one fine structure can be applied in a targeted manner to a certain partial area or certain partial areas of the inside of the drum shell in order to convey the laundry located in the laundry drum, for example, in a desired direction.
  • the alignment of the main orientation of the at least one fine structure can be freely selected within wide, suitable limits.
  • the at least one further advantageous development of the laundry drum according to the invention provides that the at least one fine structure over the entire inside of the drum shell with a viewing direction perpendicular to the inside of the drum shell has a pattern of essentially parallel, essentially straight lines trending, elevations and depressions shows. In this way, the at least one fine structure can be implemented in a structurally and / or technically simple manner.
  • the essentially rectilinear and the essentially undulating elevations and depressions are formed in a repeating arrangement in the at least one fine structure.
  • which are essentially rectilinear and the elevations and depressions, which run essentially in the shape of a wave, are arranged irregularly with respect to one another.
  • the drum shell only has the at least one fine structure on its inside.
  • An advantageous further development of the laundry drum according to the invention provides that the at least one fine structure is at least partially overlaid by a coarse structure in at least a partial area of the inside of the drum shell or over the entire inner side of the drum shell, the coarse structure elevations and / or depressions in an area greater than this or equal to 0.1 mm, preferably greater than or equal to 0.5 mm, particularly preferably greater than or equal to 1 mm. This improves the entrainment of the laundry located in the laundry drum during the laundry treatment in the laundry treatment machine.
  • the coarse structure can only be formed on the inside of the drum shell.
  • the coarse structure it is also possible for the coarse structure to be arranged both on the inside of the drum shell facing the laundry and on its outside facing away from the laundry.
  • this can be the case if the laundry drum according to the invention has a very thin material thickness and the coarse structure is produced by means of an embossing of the drum shell.
  • other manufacturing methods known to those skilled in the art for manufacturing a laundry drum according to the invention with a drum shell which has at least one fine structure and a coarse structure superimposed on the fine structure are also conceivable.
  • the same applies to the at least one fine structure which, in addition to the inside of the drum shell, can also be arranged on the outside of the drum shell.
  • the coarse structure can be, for example, a structure according to the prior art mentioned in the introduction.
  • other structures that are sensible and suitable for the respective individual case are also conceivable as a rough structure.
  • so-called barrel rings or bevels are mentioned here.
  • the barrel rings are at least one ring running in the circumferential direction of the drum shell, which rises from a base area of the drum shell, for example, in the direction of the inside of the drum shell.
  • Fig. 1 an embodiment of a laundry drum according to the invention for a laundry treatment machine designed as a laundry dryer is partially shown.
  • the laundry drum has a drum shell 2 on which two laundry lifters 4 are arranged in a manner known to those skilled in the art.
  • the drum shell 2 is made of 1.4016 steel and has a material thickness of approximately 0.35 to approximately 0.5 mm.
  • the laundry lifter 4 shown below is visible.
  • the other jack is the one in the Fig. 1 laundry lifter 4 shown arranged diametrically opposite one another.
  • the drum shell 2 has, on an inside 6 facing the laundry (not shown), a coarse structure 8 which is arranged distributed essentially over the entire circumference of the drum shell 2.
  • the coarse structure 8 is embodied as an embossing in the form of a honeycomb-shaped vaulted structure, the honeycomb base surfaces of which are shaped towards an outer side 10 of the drum shell 2 facing away from the laundry and whose adjacent edge contours of the honeycombs with their curved edges are directed towards the inside 6 of the drum shell 2 facing the laundry and so, in addition to the laundry lifters 4, form entrainment elements for the laundry in the rotating laundry drum.
  • the curvature edges rise about 0.5 mm above the honeycomb base surfaces of the honeycomb-shaped coarse structure 8. As shown in FIG Fig. 1 as can be seen, this shows in the image plane of Fig. 1
  • the end 12 of the drum shell 2 shown at the rear does not have any coarse structure 8. Due to the production of the coarse structure 8 by means of embossing and the only low material thickness of the drum shell 2, the coarse structure 8 is also visible on the outside 10 of the drum shell 2 facing away from the laundry.
  • Fig. 2 shows a detail of the drum shell 2 in the vicinity of one of the laundry lifters 4 in a greatly enlarged, partial representation.
  • Fig. 1 is in Fig. 2 also the coarse structure 8 to see.
  • a fine structure 14 is indicated by way of example in one of the honeycombs of the coarse structure 8.
  • the fine structure 14 in the present exemplary embodiment is arranged essentially distributed over the entire inside 6 of the drum shell 2.
  • the fine structure 14 is not only found in the area of the inside 6 of the drum shell 2, which has the coarse structure 8, but also in the area of the inner side 6 of the drum shell 2, which has no coarse structure 8, namely on the one in FIG Fig. 1 partially visible end 12 of the drum shell 2.
  • Fig. 1 shows a detail of the drum shell 2 in the vicinity of one of the laundry lifters 4 in a greatly enlarged, partial representation.
  • Fig. 1 is in Fig. 2 also the coarse structure 8 to see.
  • a fine structure 14 is indicated by way of example in one of the honeycombs of the
  • the fine structure 14 has a main orientation, the main orientation of the fine structure 14 being aligned in the circumferential direction of the drum shell 2 of the laundry drum.
  • the circumferential direction and thus also the main orientation of the fine structure 14 are in the Figs. 1 to 3 each symbolized by an arrow 16.
  • FIG Fig. 3 A detail from the fine structure 14 is shown in FIG Fig. 3 shown greatly enlarged and greatly simplified with a viewing direction perpendicular to the inside 6 of the drum shell 2 facing the laundry. See also the Fig. 1 and 2 . It can be clearly seen that the main orientation of the fine structure 14 is aligned in the circumferential direction 16 and the fine structure 14 over the entire inside 6 of the drum shell 2 as viewed perpendicularly to the inside 6 of the drum shell 2 has a pattern of essentially parallel to one another, essentially rectilinear, elevations 18 and depressions 20 shows. See also the Fig. 1 and 2 . The direction of view perpendicular to the inside 6 of the drum shell 2 corresponds to FIG Fig. 3 the direction of view perpendicular to the image plane of Fig. 3 .
  • elevations 18 and the depressions 20 can each have different dimensions. Accordingly, in Fig. 3 purely by way of example, elevations 18 with a larger and a smaller width as well as with a larger and a smaller length are shown. The same applies to the depressions 20 shown, which can also be of different lengths and / or different widths. It is also conceivable that elevations 18 and / or depressions 20 are formed circumferentially along the main orientation 16 of the fine structure 14. For example, individual, a plurality or the entirety of the elevations 18 and / or depressions 20 can be formed circumferentially along the main orientation 16 of the fine structure 14. In addition, the elevations 18 and / or depressions 20 of the fine structure 14 can be arranged in an orderly or diffuse manner.
  • FIG. 3 The section line A shown runs at a 90 ° angle to the main orientation 16 of the fine structure 14 and corresponds to the roughness depth R Z of the fine structure 14 at a 90 ° angle to the main orientation 16. See also FIG Fig. 4 , in which a diagram of the roughness depth R Z is shown as an example along the section line A.
  • the section line B drawn in the drawing runs parallel to the main orientation 16 of the fine structure 14 and corresponds to the surface roughness R Z of the fine structure 14 parallel to the main orientation 16. See also FIG Fig. 5 , in which a diagram of the roughness depth R z along the section line B is shown as an example.
  • the roughness R Z of the fine structure 14 parallel to the main orientation 16 of the fine structure 14 is smaller than the roughness R z at a 90 ° angle to the main orientation 16 of the fine structure 14, namely about half of the roughness R Z at a 90 ° angle to the main orientation 16 of the fine structure 14.
  • the roughness depth R Z parallel to the main orientation 16 of the fine structure 14 is therefore significantly less than the roughness depth R z at a 90 ° angle to its main orientation 16. This can also be seen from a synopsis of the exemplary diagrams in FIG Figures 4 and 5 emerged.
  • the invention is not limited to the exemplary embodiment explained above.
  • the invention can in principle advantageously be used in any type of laundry treatment machine with a laundry drum.
  • use of the invention in washing machines or in a combination device with a washing function and a drying function would also be conceivable.
  • the laundry treatment machine can be both a household appliance and a commercial appliance for professional use.
  • the elevations and the depressions of the at least one fine structure can each have different dimensions. Correspondingly, elevations with a larger and a smaller width as well as with a larger and a smaller length are possible. The same applies to the depressions, which can also be of different lengths and / or different widths. It is also conceivable that elevations and / or depressions are formed circumferentially along the main orientation of the respective fine structure. For example, individual, a plurality or the entirety of the elevations and / or depressions can be formed circumferentially along the main orientation of the respective fine structure. In addition, the elevations and / or depressions of the at least one fine structure can be arranged in an orderly or diffuse manner.
  • the drum shell does not necessarily have to have a coarse structure.
  • the drum shell can also be designed without any coarse structure. Is analogous to the fine structure It is also conceivable that the drum shell has several partial areas and has a coarse structure that differs from one another in at least two of the partial areas.
  • the at least one coarse structure can be freely selected within wide suitable limits in terms of type, function, shape, arrangement, number, alignment and dimensioning.
  • the drum shell can essentially have only a fine structure or a fine structure with a superimposed coarse structure or at least a partial area with only a coarse structure or at least a partial area without any structure essentially on its entire inside or in at least a partial area of its inside.
  • the outside of the drum shell facing away from the laundry during the laundry treatment also has at least one fine structure and / or at least one coarse structure.
  • the at least one fine structure and / or the at least one coarse structure on the outside of the drum shell can essentially correspond to the at least one fine structure and / or the at least one coarse structure on the inside of the drum shell or as a negative to the at least one fine structure and / or the at least a coarse structure can be formed on the inside of the drum shell or have a different design than the at least one fine structure and / or the at least one coarse structure on the inside of the drum shell.
  • the drum shell of the laundry drum according to the invention is made from a ferritic steel, in particular a chromium steel.
  • the material thickness of the drum shell is less than or equal to 0.5 mm, preferably less than or equal to 0.35 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (7)

  1. Tambour à linge destiné à une machine de traitement du linge et comportant une enveloppe de tambour (2), laquelle présente une structure (8, 14) sur un côté intérieur (6) faisant face au linge pendant le traitement du linge, la structure (14) étant conçue sous forme d'au moins une structure fine (14),
    caractérisé en ce que la structure fine (14) est conçue avec une orientation principale (16) qui est orientée dans la direction circonférentielle de l'enveloppe de tambour (2) du tambour à linge, la structure fine étant définie, à un angle de 90° par rapport à l'orientation principale (16) de la structure fine (14), par une profondeur de rugosité Rz dans une plage supérieure de Rz= 2 µm à Rz = 50 µm, de préférence dans une plage supérieure de Rz = 10 µm à Rz = 50 µm, et que l'au moins une structure fine (14) est définie, parallèlement à l'orientation principale (16) de la structure fine (14), par une profondeur de rugosité Rz inférieure à la profondeur de rugosité Rz à un angle de 90° par rapport à l'orientation principale (16) de la structure fine (14).
  2. Tambour à linge selon la revendication 1, caractérisé en ce que l'au moins une structure fine (14) est définie, parallèlement à l'orientation principale (16) de la structure fine (14), par une profondeur de rugosité Rz inférieure ou égale à la moitié de la profondeur de rugosité Rz à un angle de 90° par rapport à l'orientation principale (16) de la structure fine (14).
  3. Tambour à linge selon la revendication 1, caractérisé en ce que l'au moins une structure fine (14) est définie, parallèlement à l'orientation principale (16) de la structure fine (14), par une profondeur de rugosité Rz inférieure ou égale à 1/5 de la profondeur de rugosité Rz à un angle de 90° par rapport à l'orientation principale de la structure fine (14).
  4. Tambour à linge selon l'une des revendications 1 à 3, caractérisé en ce que l'au moins une structure fine (14) est disposée sensiblement de façon à être répartie sur tout le côté intérieur (6) de l'enveloppe de tambour (2).
  5. Tambour à linge selon l'une des revendications 1 à 4, caractérisé en ce que l'au moins une structure fine (14) présente, sur tout le côté intérieur (6) de l'enveloppe de tambour (2), une orientation principale (16) sensiblement parallèle à la direction circonférentielle de l'enveloppe de tambour (2).
  6. Tambour à linge selon l'une des revendications 1 à 5, caractérisé en ce que l'au moins une structure fine (14) forme, sur tout le côté intérieur (6) de l'enveloppe de tambour (2), vue perpendiculairement sur le côté intérieur (6) de l'enveloppe de tambour (2), un motif en tout, lequel est constitué d'élévations (18) et de dépressions (20) disposées sensiblement parallèlement les unes aux autres et s'étendant sensiblement en ligne droite.
  7. Tambour à linge selon l'une des revendications 1 à 6, caractérisé en ce que l'au moins une structure fine (14) est au moins partiellement recouverte d'une structure grossière (8) dans au moins une zone partielle du côté intérieur (6) de l'enveloppe de tambour (2) ou sur tout le côté intérieur de l'enveloppe de tambour, la structure grossière (8) présentant des élévations et/ou des dépressions dans une plage supérieure ou égale à 0,1 mm, de préférence supérieure ou égale à 0,5 mm, de manière particulièrement préférée supérieure ou égale à 1 mm.
EP19190069.5A 2018-08-13 2019-08-05 Tambour de lavage pour une machine de traitement du linge Active EP3611297B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018119621.0A DE102018119621A1 (de) 2018-08-13 2018-08-13 Wäschetrommel für eine Wäschebehandlungsmaschine

Publications (2)

Publication Number Publication Date
EP3611297A1 EP3611297A1 (fr) 2020-02-19
EP3611297B1 true EP3611297B1 (fr) 2021-07-07

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Application Number Title Priority Date Filing Date
EP19190069.5A Active EP3611297B1 (fr) 2018-08-13 2019-08-05 Tambour de lavage pour une machine de traitement du linge

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EP (1) EP3611297B1 (fr)
DE (1) DE102018119621A1 (fr)
ES (1) ES2882055T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021122654A1 (de) 2021-09-01 2023-03-02 Miele & Cie. Kg Trommel für einen Wäschetrockner und Wäschetrockner

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10145079C1 (de) 2001-09-13 2002-10-10 Miele & Cie Trommel für einen Wäschetrockner
KR101136863B1 (ko) * 2007-02-28 2012-04-20 삼성전자주식회사 세탁기
DE102008006511A1 (de) 2008-01-29 2009-07-30 BSH Bosch und Siemens Hausgeräte GmbH Wäschetrommel für eine Wäschebehandlungsmaschine
DE102008009141A1 (de) * 2008-02-14 2009-08-27 BSH Bosch und Siemens Hausgeräte GmbH Wäschetrommel für eine Wäschebehandlungsmaschine
JP2015156881A (ja) * 2014-02-21 2015-09-03 株式会社東芝 洗濯機

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Publication number Publication date
EP3611297A1 (fr) 2020-02-19
DE102018119621A1 (de) 2020-02-13
ES2882055T3 (es) 2021-12-01

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