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
  • 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 water-conducting household appliance, such as a washing machine, a washer-dryer or a tumble dryer, with a rotatably mounted laundry drum with a drum shell and at least one drum top surfaces, wherein embossments are applied to the laundry drum and the edges of the embossments are formed elliptical.
• a laundry drum for a water-conducting household appliance with a drum shell and at least one drum top surface, wherein imprints are applied to the laundry drum.
• a washing machine or a washer-dryer with a drum horizontally or inclined and rotatably mounted in a tub is known.
• the shell of the drum has a directed towards the interior of the drum, consisting of polygons arch structure. Holes are arranged in the corner points of the edge contours of the arch structure.
• a water-conducting household appliance z.
• a washer-dryer or a drum-type washing machine with a tub and a washing drum rotatably arranged in the tub known, wherein the jacket of the tub is provided with embossments.
• the embossings can be round, oval or polygonal. Round embossments have a slightly curved shape.
• a washing drum for a washing machine is known, which is provided via a cylindrical shell with a plurality of holes for the passage of working fluid. Between these holes trough-like characteristics or elevations are provided.
• a drum for a tumble dryer with a perforated drum base and a feed opening and a connected to the drum base drum shell is known.
• embossments in the form of a honeycomb-shaped arch structure are present, the honeycomb surfaces are directed to the drum outer.
• Object of the present invention is therefore to provide a water-conducting household appliance and a washing drum with improved washing and drying properties available.
• a water-conducting household appliance for.
• washing machine washer-dryer or dryer
• a rotatably mounted laundry drum with a drum shell and at least one drum top surface, wherein imprints are applied to the laundry drum
• the edges of the embossments are formed elliptical.
• streamlined channel-like cavities are formed in the unembossed part of the laundry drum.
• a fluid flowing in these channel-like cavities between the embossments and the overlaid laundry thus has low flow losses due to the elliptical shape.
• the embossments are applied to the drum shell.
• the laundry is predominantly on, so that it is particularly useful here to apply the embossing.
• the embossments are directed inwardly with respect to the laundry drum.
• the embossings have a different size and / or a different shape, ie that the basis of the embossing lying ellipses have different semi-axes a, b. This allows a further adaptation to different conditions.
• the large semiaxis a has a length of 5 to 15 mm and the small semiaxis b a length of 2.5 to 10 mm.
• the contour of the cross section of the embossings in particular parallel to the respective axis of the ellipse, arc-shaped or mono- or polygonal, z. B. three or rectangular.
• the shape of the embossing are thus different and can thus be adapted to different circumstances.
• the curvature in the cross section is non-uniform and / or the slope of the embossing in the cross section is different.
• the depth of the embossments is 0.5 to 5 mm.
• the embossments are arranged at a minimum distance, for example from 3 to 10 mm, to one another. Due to a minimum distance between the embossments channel-like cavities form in which cleaning fluid and drying air can flow well.
• the embossments are staggered in order to apply as many embossings per unit area can. More imprints per unit area enhance the positive effects of embossing in a washing drum.
• a semiaxis a, b of the embossing underlying ellipses for the embossments on the drum shell aligned parallel, perpendicular or at a certain angle ⁇ inclined to the drum axis.
• flood holes are formed in the drum shell in a washing machine or a washer-dryer.
• the flood holes are arranged between the elliptical embossments or in the elliptical embossings.
• the flood holes Preferably, the flood holes have a diameter of 1 to 4 mm and the distance between the flood holes is 2 to 10 mm.
• the embossments are applied to partial surfaces of the drum shell.
• the embossments are interrupted or not formed on a driving rib.
• the attachment of the driver rib on the drum shell is still guaranteed and there can be no impurities or fluff in spaces between the embossing and driving rib.
• a laundry drum according to the invention for a water-conducting domestic appliance with a drum shell and at least one drum top surface imprints are applied to the laundry drum, wherein the edges of the embossments are formed elliptical.
• FIG. 1 is a perspective view of a washing machine according to the invention
• FIG. 2 is a perspective view of a washing drum according to the invention
• FIG. 3 is a plan view of a development of a drum shell
• FIG. 4 is a plan view of a development of a drum shell in a further embodiment
• FIG. 5 is a plan view of a development of the drum shell in a supplementary embodiment
• FIG. 6 is a view of an embossing underlying ellipse
• Fig. 7 shows a cross section of a washing drum according to the invention with imprints with quadrangular cross section and
• Fig. 8 shows a cross section of a washing drum according to the invention with embossments with arcuate cross-section.
• FIG. 1 shows a washing machine 1 according to the invention with a washing drum 6 according to the invention.
• the washing drum 6 according to the invention has a drum top surface 3 and a drum shell 2.
• embossments 4 are applied on the drum shell 2 .
• the edge of the imprints, d. H. the transition between the embossment 4 and the unembossed part of the washing drum 6, in particular the transition between the embossment 4 and the unembossed part of the drum shell 2 is elliptical.
• the drum shell 2 is still preferably driving ribs 5.
• the embossments 4 are directed inwardly to the washing drum 6. However, the embossments 4 may also be directed outwards.
• the shape of the edge of the embossing 4 need not exactly correspond to that of an ellipse in the mathematical sense.
• the elliptical embossings 4 may also have slightly different shapes from an ellipse in the mathematical sense.
• the embossments 4 are generally applied to the drum shell 2 both in the case of the washing machine 1 described in the exemplary embodiment or a washer-dryer (not shown) and in the case of a tumble dryer (not shown).
• the embossings 4 may also have a different size and / or a different shape in addition to the same shapes shown in Figures 3, 4 and 5.
• a different shape is understood to mean embossings 4 in which the ellipses underlying the embossing have different semi-axes a and b (FIG. 6).
• the large semi-axis a normally has a length in the range of about 5 to 15 mm and the small semi-axis b generally has a length in the range of 2.5 to 10 mm.
• the cross section of the embossings 4 may be arcuate or mono- or polygonal. In Fig. 7 is a cross section with a rectangular cross section and in Fig. 8 an embossing with arcuate cross-section shown.
• the radius of curvature and / or the slope of the cross section of the embossing may also be different.
• a relatively large pitch to the drum shell 2 may be present and on the other hand slowly decrease this slope towards the center of the elliptical embossing 4.
• the depth of the embossments is in a range of about 0.1 to 10 mm, preferably in a range of 0.5 to 5 mm.
• the embossings 4 are preferably arranged at a minimum distance, for example of 1 mm, to each other.
• a minimum distance for example of 1 mm
• the elliptical embossments are offset, correspondingly arranged as shown in Figures 3 to 5. Due to the offset more imprints 4 can be applied per unit area on the drum shell 3 and thus overall the effect of the embossing 4 can be increased.
• a washing drum 6 according to the invention with a drum shell 2 and a drum top surface 3 is shown.
• the washing drum 6 rotates about a drum axis 7 in the direction of rotation 8.
• the embossing 4 can also be aligned differently on the drum shell 2.
• 4 and 5 developments of the drum shell 2 are shown in plan view.
• the embossings 4 are arranged offset in each case in these figures.
• the large half-axis a of the embossment 4 underlying ellipse is perpendicular to the drum axis 7 and parallel to the direction of rotation 8.
• the arrangement in Fig. 4. is the large semi-axis a of the ellipse, which is the embossing 4 is based , perpendicular to the direction of rotation 8 and parallel to the drum axis 7.
• the large semi-axis a of the ellipse which is the elliptical embossing 4 is based, aligned at an angle ⁇ to the drum axis 7.
• the cross section 10 of the embossments 4 in the direction of the major axis a and the cross section 11 of the embossments 4 in the direction of the semi-minor axis b shown.
• FIGS. 3 to 5 the flood holes 9 which are generally present here are also shown.
• the flood holes 9 are preferably positioned between the embossments 4 or also in the embossments 4 (not shown).
• the flood holes 9 have a diameter of generally 1 to 4 mm and are arranged at a distance of about 2 to 20 mm from each other.
• the imprints have the advantage in a washing drum in a water-conducting household appliance that thereby the laundry drum is stiffened. As a result, material can be saved and due to the higher rigidity of the laundry drum 6 a noise reduction is achieved. Due to the surface structure applied by the embossing, scratches or other minor damage to the surface are barely visible in the interior of the laundry drum, resulting in a lower optical susceptibility of the laundry drum in a water-conducting domestic appliance according to the invention.
• an air flow forms between the embossments, so that overall the drying performance can be improved and increased.
• the existing air cushion between the imprints the laundry falls gently.
• the noise is reduced and the laundry is spared due to the muffled impact on the drum shell.
• part of the moisture of the laundry can diffuse into this air space or the air cushion. This increases the drying performance.
• the supplied drying air can thus take the moisture more easily, so that the drying performance is increased and the consumption of energy decreases.

Landscapes

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

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=36603721

Family Applications (1)

Country Status (7)

Cited By (1)

Families Citing this family (24)

Citations (6)

Family Cites Families (4)

• 2005
  • 2005-06-06 DE DE102005026175A patent/DE102005026175A1/de not_active Withdrawn
• 2006
  • 2006-04-13 RU RU2007144055/05A patent/RU2402651C2/ru not_active IP Right Cessation
  • 2006-04-13 KR KR1020077027484A patent/KR100892544B1/ko not_active IP Right Cessation
  • 2006-04-13 WO PCT/EP2006/061591 patent/WO2006131416A1/de active Application Filing
  • 2006-04-13 EP EP06725753A patent/EP1902170A1/de not_active Ceased
  • 2006-04-13 US US11/921,675 patent/US20090211313A1/en not_active Abandoned
  • 2006-04-13 CN CNA2006800198942A patent/CN101189382A/zh active Pending

Patent Citations (6)

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