EP3234252A1 - Wäschetrommel mit perforierter trommelrückwand - Google Patents
Wäschetrommel mit perforierter trommelrückwandInfo
- Publication number
- EP3234252A1 EP3234252A1 EP15800836.7A EP15800836A EP3234252A1 EP 3234252 A1 EP3234252 A1 EP 3234252A1 EP 15800836 A EP15800836 A EP 15800836A EP 3234252 A1 EP3234252 A1 EP 3234252A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drum
- laundry
- rear wall
- perforated
- laundry 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
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
- 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
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/02—Rotary receptacles, e.g. drums
- D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
- D06F37/26—Casings; Tubs
-
- 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
Definitions
- the invention relates to a rotatable laundry drum, comprising a drum shell and a drum rear wall, wherein the drum rear wall has at least one perforated air passage area.
- the invention further relates to a laundry drying apparatus with such a laundry drum.
- the invention is particularly advantageously applicable to tumble dryer or washer-dryer, in particular recirculating air dryer.
- the laundry in the dryer drum is moved and mixed. This requires good contact between the laundry and the drum surface. At the same time there is always a relative movement between the laundry and the drum surface. This has the consequence that the laundry is exposed to mechanical and thermal stresses, which can lead to a laundry wear.
- a laundry treatment machine in particular a laundry dryer, with a laundry drum rotatably mounted in a washing tub and a drying air inlet and an air outlet area.
- the laundry drum has an inwardly deformed or drawn drum rear wall, which is perforated over the entire surface with holes. Between the drum rear wall and the tub, a seal is provided. The drum rear wall is rotatable with the remaining laundry drum.
- DE 10 2006 061 210 A1 discloses a drum for a household appliance for the care of laundry items, which is cylindrical and comprises a rear wall and a jacket, wherein a Verwirrschutz adopted is arranged for untangling the laundry items with rotating drum on the rear wall and into the interior the drum extends.
- DE 10 162 918 A1 discloses a laundry drum for a laundry treatment machine, wherein the laundry drum is rotatably mounted within the housing of the laundry treatment machine, preferably a washing machine, and at least one floor has disc and a jacket.
- These two components each consist at least partially of sheet metal and are provided individually or both with a directed towards the drum interior vault structure.
- the arch structure is formed from spherical calottes directed towards the interior of the drum.
- EP 2 592 184 A1 discloses a clothes dryer with a laundry drum whose drum shell is rotatable against a stationary drum rear wall. It is the object of the present invention to overcome the disadvantages of the prior art at least partially, and in particular to provide an improved way to make contact of laundry with the laundry drum so that a good mixing and movement of the laundry in the laundry drum at a simultaneous Reduction of the laundry load is achieved.
- a rotatable laundry drum comprising a drum shell and a drum rear wall, wherein the drum rear wall has at least one perforated air passage area, wherein in the perforated air passage area at least one pointing in the direction of a drum interior, non-perforated embossment is introduced, wherein the at least one Embossing has at least one radially outwardly extending rib and wherein the rib, in particular in the direction of rotation (generally but possibly also counter to the direction of rotation) of the laundry drum extends curved.
- This laundry drum has the advantage that the embossing or embossing area can serve as a stationary driver, which causes an increased movement of the laundry.
- the embossing reduces the contact of the laundry with the drum rear wall, so that the laundry rubs less on the drum rear wall, which reduces abrasion of lint from the laundry. Due to the lack of perforation or the dense surface of the embossing of the abrasion is further reduced because the laundry is not through Holes of the perforation is rubbed off.
- the lack of perforation gives the further advantage that where the laundry is pressed particularly strongly against the drum rear wall, no warm air blows directly onto the laundry, which reduces thermal stress.
- the perforation-free embossing also causes a stiffening of the drum rear wall, which allows material savings, such as a reduction of a sheet thickness, and thus a cost reduction.
- This laundry drum has the further advantages that it allows a particularly effective entrainment and reduction of the circulation of the laundry on the perforated area.
- a curvature and / or an angle of attack of the at least one rib can be flexibly adapted to requirements for a desired laundry case.
- the perforated air passage area may have regular or irregular perforations.
- the perforation may have the same or different shaped holes, e.g. round and / or slotted holes.
- the embossing is, in particular, a stamping not continuous in the circumferential direction of the drum rear wall or the direction of rotation, that is to say, in particular, no embossing that is continuous rotationally symmetrical exclusively about an axis of rotation of the drum rear wall.
- an embossing will be present adjacent to a perforated partial region.
- the drum shell of the laundry drum may be formed on the front side so that it can be mounted rotatably directly on a bearing plate or housing. In particular, in this case can be dispensed with a drum front wall.
- the open front of the laundry drum may then serve as a feed opening.
- the laundry drum may have a drum front wall which surrounds a feed opening and which e.g. can be used for front rotatable mounting of the laundry drum.
- the drum back wall also likes as a rear drum bottom or simply
- Drum floor are called. It is an embodiment that the drum shell is rotatable against the stationary drum rear wall. In this embodiment, the movement of the laundry is transmitted only by the movement of the drum shell and possibly the drum front wall (if present and rotatable).
- the drum rear wall is firmly connected to a rear end shield or to a rear wall of the device and does not rotate with it. This results in a larger relative movement between the laundry and the drum rear wall than in a co-rotating drum rear wall.
- the standing drum rear wall can be used directly to guide the heated air, which allows a higher volume flow through the laundry drum.
- the at least one embossment is centered. This allows a particularly effective stiffening and prevents twisting there lying laundry.
- the embossing has a plurality of centrally located ribs, which are arranged distributed in the same direction at right angles.
- the number of ribs may e.g. two, three, four, five or even more.
- At least one embossment has a radial distance to an outer edge of the perforated air passage area. This enables a particularly high air flow rate.
- At least one embossing extends to an outer edge of the perforated air passage area. This gives the advantage of a particularly effective reinforcement of the drum rear wall. It is also an embodiment that an inwardly curving edge region of the drum rear wall is perforationslos formed. This embodiment is advantageous because the laundry can rest particularly strongly on such an edge region and therefore would also be charged there if the edge region were perforated.
- the object is further achieved by a drum rear wall as described above.
- the object is also achieved by a laundry drying apparatus, comprising a laundry drum as described above.
- the laundry dryer can be designed analogously to the laundry drum and gives the same advantages.
- the laundry drying apparatus is in particular a household appliance, in particular in the sense of "white goods".
- the tumble dryer may be a stand-alone tumble dryer or a combined laundry / drying machine or washer-dryer.
- the clothes dryer may be an exhaust air dryer or a circulating air dryer.
- the laundry drying device may have a heat pump or be a heat pump tumble dryer.
- Figure 1 in front view obliquely from components of a tumble dryer including a laundry drum;
- FIG. 2 shows a frontal view of the drum rear wall of the laundry drum from FIG. 1;
- FIG. and Figure 3 is a frontal view of a drum rear wall.
- 1 shows a plurality of components of a tumble dryer 1, including a laundry drum 2 and at least part of a rear housing wall 3.
- the laundry drum 2 has a frontally open, hollow cylindrical drum shell 4 whose rear end face 5 is covered by a stationary or stationary drum rear wall 6 is.
- the drum shell 4 is rotatable about its (horizontal here) longitudinal or symmetry axis.
- a belt 7 is tensioned in the circumferential direction about an outer side of the drum shell 4, which belt can be driven by means of a motor 8 in order to move the drum shell 4 along.
- the drum shell 4 is mounted on rollers 9. The drum shell 4 thus rotates against the drum rear wall 6 or relative to the drum rear wall 6.
- the tumble dryer 1 During operation of the tumble dryer 1 warm, comparatively dry air flows through the drum rear wall 6 into the interior of the laundry drum 2 and can absorb moisture there from the laundry. The then humid air can escape from a serving as a feed opening 10 front end face. In a circulating air dryer, the humid air is cooled following, whereby it condenses out, and then heated again, and then again passed through the drum rear wall 6 in the interior of the laundry drum 2.
- the condensing and heating can be carried out, for example, by means of a heat pump.
- the drum shell 4 and / or the drum rear wall 6 can be present as sheet metal parts, in particular as stamped / bent parts.
- the drum rear wall 6 is formed at its outer, annular edge portion 1 1 for rotatable engagement with a rear edge of the drum shell 4.
- the drum shell 4 may be formed like a fold.
- An adjoining central, annular transition region 12 separates the edge region 11 from a plane central region 13.
- the transition region 12 extends obliquely from the central region 13 bent at the front.
- the transition region 12 and the central region 13 serve as perforated air passage areas and are each perforated with eg circular holes.
- a disadvantage here is that laundry rests closely against the perforated regions 12 and 13 and is thus subjected to mechanical and thermal stress, in particular also at the transition region 12.
- FIG 3 shows a frontal view of a drum rear wall 14 according to the invention. This can be used instead of the drum rear wall 6 with the laundry drum 2 in the tumble dryer 1.
- the drum rear wall 14 has only the central region 15 as at least partially perforated air passage area, while the transition region 16 is not perforated.
- the lack of perforation of the transition region 16 reduces mechanical abrasion of laundry sliding thereon, as well as thermal stress from direct contact with warm air.
- a non-perforated embossment 17 pointing in the direction of the interior of the drum (ie forward) is introduced into the perforated subregion 15a.
- the embossment 17 has four ribs 18 located at a center of the central area 15 and extending outwardly (i.e., radially) therefrom.
- the ribs 18 are equally distributed in the circumferential direction (about the longitudinal axis) and curved in (in this view in the clockwise direction) rotational direction of the drum shell 4.
- the ribs 18 do not extend to an outer edge of the central region 15, but leave a radial distance.
- embossing 17 By embossing 17 is achieved that laundry no longer presses so much on the perforated area 15a and therefore is no longer so heavily mechanically loaded when sliding along with rotating drum shell 4. Also, a thermal load is reduced by the warm drum rear wall 14 and the warm air.
- the ribs 18 of the embossment 17 serve as stationary "driver" or Ummélz Schemee for additional movement of the laundry.
- the present invention is not limited to the embodiment shown.
- At least one rib in addition to four ribs, only one rib, two ribs, three ribs, five ribs, etc. may be used. At least one rib, in particular all ribs, may extend to the edge of the central region. For example, a bend angle, angle of attack, width and / or length, etc. of the rib (s) may be varied to achieve a desired wash fall. In particular, the at least one rib can also be rectilinear.
- the embossing is not limited to the presence of a rib. Thus, at least one embossing may also have a different, in particular not uniform ring-like shape.
- the central area may have a plurality of camber-shaped or knob-like projections, which are distributed in particular over the central area.
- the central region may be flat or curved in cross-section (parallel to the longitudinal axis of the drum shell).
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
- Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL15800836T PL3234252T3 (pl) | 2014-12-15 | 2015-11-25 | Bęben prania z perforowaną tylną ścianką bębna |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102014225873.1A DE102014225873A1 (de) | 2014-12-15 | 2014-12-15 | Wäschetrommel mit perforierter Trommelrückwand |
| PCT/EP2015/077646 WO2016096350A1 (de) | 2014-12-15 | 2015-11-25 | Wäschetrommel mit perforierter trommelrückwand |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3234252A1 true EP3234252A1 (de) | 2017-10-25 |
| EP3234252B1 EP3234252B1 (de) | 2020-01-08 |
Family
ID=54703988
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15800836.7A Active EP3234252B1 (de) | 2014-12-15 | 2015-11-25 | Wäschetrommel mit perforierter trommelrückwand |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP3234252B1 (de) |
| CN (1) | CN107002337B (de) |
| DE (1) | DE102014225873A1 (de) |
| PL (1) | PL3234252T3 (de) |
| WO (1) | WO2016096350A1 (de) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08182887A (ja) * | 1994-12-28 | 1996-07-16 | Toshiba Corp | 脱水兼用洗濯機 |
| DE19828243A1 (de) | 1998-06-25 | 1999-12-30 | Aeg Hausgeraete Gmbh | Wäschebehandlungsmaschine, insbesondere Waschtrockner |
| US6082022A (en) * | 1999-05-05 | 2000-07-04 | Camco Inc. | Clothes dryer drum rear end head |
| DE10162918A1 (de) * | 2001-12-20 | 2003-07-03 | Bsh Bosch Siemens Hausgeraete | Trommel für eine Wäschebehandlungsmaschine |
| DE10205306B4 (de) * | 2002-02-08 | 2006-12-28 | BSH Bosch und Siemens Hausgeräte GmbH | Trommelwaschmaschine mit einer von vorn beschickbaren Wäschetrommel |
| DE102006061210A1 (de) * | 2006-12-22 | 2008-06-26 | BSH Bosch und Siemens Hausgeräte GmbH | Trommel für ein Hausgerät zur Pflege von Wäschestücken |
| EP2592184A1 (de) * | 2011-11-08 | 2013-05-15 | Electrolux Home Products Corporation N.V. | Waschmaschine mit Drehtrommel |
-
2014
- 2014-12-15 DE DE102014225873.1A patent/DE102014225873A1/de not_active Withdrawn
-
2015
- 2015-11-25 PL PL15800836T patent/PL3234252T3/pl unknown
- 2015-11-25 CN CN201580068576.4A patent/CN107002337B/zh active Active
- 2015-11-25 EP EP15800836.7A patent/EP3234252B1/de active Active
- 2015-11-25 WO PCT/EP2015/077646 patent/WO2016096350A1/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016096350A1 (de) | 2016-06-23 |
| DE102014225873A1 (de) | 2016-06-16 |
| CN107002337A (zh) | 2017-08-01 |
| PL3234252T3 (pl) | 2020-07-27 |
| CN107002337B (zh) | 2019-12-06 |
| EP3234252B1 (de) | 2020-01-08 |
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