EP3234252B1 - Tambour de lave-linge avec panneau de fond perforé - Google Patents

Tambour de lave-linge avec panneau de fond perforé Download PDF

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Publication number
EP3234252B1
EP3234252B1 EP15800836.7A EP15800836A EP3234252B1 EP 3234252 B1 EP3234252 B1 EP 3234252B1 EP 15800836 A EP15800836 A EP 15800836A EP 3234252 B1 EP3234252 B1 EP 3234252B1
Authority
EP
European Patent Office
Prior art keywords
drum
laundry
rear wall
perforated
embossing
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
EP15800836.7A
Other languages
German (de)
English (en)
Other versions
EP3234252A1 (fr
Inventor
Vladimir Baecker
Kai-Uwe Bache
Alexander Drebant
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 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 Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Priority to PL15800836T priority Critical patent/PL3234252T3/pl
Publication of EP3234252A1 publication Critical patent/EP3234252A1/fr
Application granted granted Critical
Publication of EP3234252B1 publication Critical patent/EP3234252B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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 casing and a drum rear wall, the drum rear wall having at least one perforated air passage area, and at least one non-perforated embossing pointing in the direction of a drum interior is introduced into the perforated air passage area, the at least one embossing at least one has radially outwardly extending rib.
  • the invention further relates to a laundry drying device with such a laundry drum.
  • the invention is particularly advantageously applicable to tumble dryers or washer dryers, in particular circulating air dryers.
  • the laundry In order to achieve an even drying result, the laundry is moved and mixed in the dryer drum. 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. As a result, the laundry is exposed to mechanical and thermal loads, which can lead to laundry wear.
  • DE 198 28 243 A1 discloses a laundry treatment machine, in particular washer dryer, with a laundry drum rotatably mounted in a tub and a drying air inlet and an air outlet area.
  • the washing drum has an inwardly deformed or drawn drum rear wall that is perforated over the entire surface with holes. A seal is provided between the rear wall of the drum and the tub. The rear wall of the drum can be rotated with the rest of the laundry drum.
  • DE 10 2006 061 210 A1 discloses a drum for a domestic appliance for the care of laundry items, which is cylindrical in shape and comprises a rear wall and a jacket, wherein an anti-tangle device for untangling the laundry items is arranged on the rear wall when the drum is rotating and extends into the interior of the drum.
  • DE 10 162 918 A1 discloses a laundry drum for a laundry treatment machine, the laundry drum being rotatably mounted within the housing of the laundry treatment machine, preferably a washing machine, and at least one base disc and has a coat.
  • These two components each consist at least partially of sheet metal and are individually or both provided with a domed structure facing the inside of the drum.
  • the vaulted structure is formed from spherical caps facing the inside of the drum.
  • EP 2 592 184 A1 discloses a dryer with a laundry drum whose drum jacket is rotatable against a standing rear wall of the drum.
  • a rotatable laundry drum comprising a drum jacket and a drum rear wall, the drum rear wall having at least one perforated air passage area, wherein at least one non-perforated embossing pointing in the direction of a drum interior is introduced into the perforated air passage area, the at least one Embossing has at least one radially outwardly extending rib and wherein the rib extends curved in particular in the direction of rotation (but generally also counter to the direction of rotation) of the laundry drum.
  • This laundry drum has the advantage that the embossing or the embossing area can serve as a standing 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 against the drum rear wall, which reduces abrasion of fluff from the laundry. Due to the missing perforation or the dense surface of the embossing, the abrasion is further reduced, since the laundry no longer runs through Holes of the perforation is rubbed off.
  • the lack of perforation has the further advantage that where the laundry is pressed particularly hard against the drum rear wall, no warm air is blown directly onto the laundry, which reduces thermal stress.
  • the perforation-free embossing also stiffens the rear wall of the drum, which enables material to be saved, for example a reduction in sheet thickness, and thus a cost reduction.
  • This laundry drum has the further advantages that it enables particularly effective laundry take-up and a reduction in the amount of 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 holes of the same or different shapes, e.g. round and / or slit-shaped holes.
  • the embossing is in particular an embossing that is not continuous in the circumferential direction of the drum rear wall or direction of rotation, that is to say in particular not an embossing that is rotationally symmetrical only about an axis of rotation of the drum rear wall. Rather, when looking at at least one annular region of the drum rear wall centered around the axis of rotation, an embossing adjacent to a perforated partial region will be present.
  • the drum shell of the laundry drum may be designed on the front so that it can be rotatably supported directly on a bearing plate or housing. In this case in particular there is no need for a drum front wall.
  • the open front of the laundry drum may then serve as a loading opening.
  • the laundry drum may have a drum front wall which surrounds a loading opening and which e.g. can be used for the front rotatable storage of the laundry drum.
  • the rear wall of the drum may also be referred to as the rear drum floor or simply as the drum floor.
  • the drum shell can be rotated against the standing rear wall of the drum.
  • 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 creates a larger relative movement between the laundry and the drum rear wall than with a rotating drum rear wall.
  • the standing drum rear wall can be used directly to guide the heated air, which enables a higher volume flow through the laundry drum.
  • the greater relative movement between the laundry and the standing drum rear wall compared to the rotating drum rear wall as well as the higher thermal load on the laundry when in direct contact with the standing drum rear wall can at least be compensated for or even overcompensated by the provision of the embossing.
  • the at least one embossing starts in the middle. This enables a particularly effective stiffening and prevents the laundry lying there from twisting.
  • the embossing has a plurality of ribs which are positioned in the center and are arranged at uniform angles in the circumferential direction. In this way, particularly effective laundry transport and laundry removal is provided from the defining area.
  • the number of ribs may e.g. be two, three, four, five or more.
  • At least one embossing has a radial distance from an outer edge of the perforated air passage area. This enables a particularly high air throughput.
  • 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 rear wall of the drum.
  • an inwardly curved edge region of the drum rear wall is designed without perforations. This configuration is advantageous since the laundry can lie particularly strongly on such an edge area and would therefore also be loaded there if the edge area were perforated.
  • the object is further achieved by a drum rear wall as described above.
  • the object is also achieved by a laundry drying device comprising a laundry drum as described above.
  • the laundry drying device can be designed analogously to the laundry drum and gives the same advantages.
  • the laundry drying device is in particular a household appliance, in particular in the sense of "white goods".
  • the laundry drying device may be a stand-alone clothes dryer or a combined washing / drying device or washer-dryer.
  • the laundry drying device may be an exhaust air dryer or a circulating air dryer.
  • the laundry drying device may have a heat pump or may be a heat pump dryer.
  • Fig.1 shows several components of a clothes dryer 1, including a clothes drum 2 and at least part of a rear housing wall 3.
  • the drum jacket 4 is rotatable about its (here horizontal) longitudinal or symmetry axis.
  • a belt 7 is tensioned in the circumferential direction around an outside of the drum shell 4, which belt can be driven by a motor 8 in order to rotate the drum shell 4 as well.
  • the drum jacket 4 is mounted on rollers 9. The drum jacket 4 thus rotates against the drum rear wall 6 or relative to the drum rear wall 6.
  • the drum casing 4 and / or the drum rear wall 6 can be present as sheet metal parts, in particular as stamped / bent parts.
  • Fig.2 shows a front view of the drum rear wall 6 of the laundry drum 2.
  • the drum rear wall 6 is formed on its outer, annular edge region 11 for rotatable engagement with a rear edge of the drum shell 4.
  • the drum casing 4 may be formed like a fold.
  • An adjoining central, annular transition region 12 separates the edge region 11 from a flat central region 13. Starting from the central region 13, the transition region 12 is inclined curved at the front.
  • the transition area 12 and the central area 13 serve as perforated air passage areas and are each perforated with circular holes, for example. It is disadvantageous here that laundry lies tightly against the perforated areas 12 and 13 and is thus mechanically and thermally stressed, in particular also at the transition area 12.
  • FIG. 3 shows a front 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 clothes dryer 1.
  • the drum rear wall 14 has only the central region 15 as an at least partially perforated air passage region, while the transition region 16 is not perforated.
  • the lack of perforation in the transition area 16 reduces mechanical abrasion of laundry sliding on it, as well as thermal stress due to direct contact with warm air.
  • a non-perforated embossing 17 is introduced into the perforated partial region 15a in the direction of the interior of the drum (ie towards the front).
  • the embossing 17 has four ribs 18 that attach to a center of the central region 15 and extend outward (i.e., radially) from there.
  • the ribs 18 are evenly distributed in the circumferential direction (around the longitudinal axis) and are curved in the direction of rotation of the drum shell 4 (pointing clockwise in this view).
  • the ribs 18 do not extend to an outer edge of the central region 15, but leave a radial distance.
  • the embossing 17 ensures that laundry no longer presses so strongly on the perforated area 15a and is therefore no longer mechanically stressed as it slides along while the drum casing 4 is rotating. This also reduces the thermal load on the warm drum rear wall 14 and the warm air.
  • the ribs 18 of the embossing 17 serve as stationary “drivers” or circulation areas for additional movement of the laundry.
  • ribs In addition to four ribs, only one rib, two ribs, three ribs, five ribs, etc. may be used. At least one rib, particularly all ribs, may extend to the edge of the central area.
  • an angle of curvature, an angle of attack, a width and / or a length etc. of the rib (s) can be varied in order to achieve a desired laundry situation.
  • the at least one rib can also be straight.
  • the embossing is not limited to the presence of a rib.
  • At least one embossing may also have a different, in particular not uniformly ring-like shape.
  • the central area may have a plurality of camber-like or knob-like projections, which are distributed in particular over the central area.
  • the central area 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)

Claims (8)

  1. Tambour à linge (2) rotatif, présentant une enveloppe de tambour (4) et une paroi arrière (14) de tambour,
    - la paroi arrière (14) de tambour présentant au moins une zone de passage d'air (15, 15a) perforée, et
    - au moins un estampage (17) non perforé, orienté en direction d'un espace intérieur de tambour étant placé dans la zone de passage d'air (15) perforée,
    - l'au moins un estampage (17) présentant au moins une nervure (18) s'étendant radialement vers l'extérieur,
    caractérisé en ce que
    - la nervure (18) s'étend de manière courbée en direction de rotation du tambour à linge (2).
  2. Tambour à linge (2) selon la revendication 1, l'enveloppe de tambour (4) étant rotative contre la paroi arrière de tambour (14) verticale.
  3. Tambour à linge (2) selon l'une quelconque des revendications précédentes, l'au moins un estampage (17) étant placé de manière centrée.
  4. Tambour à linge (2) selon la revendication 3, l'estampage (17) présentant plusieurs nervures (18) partant de manière centrée, lesquelles sont disposées en étant réparties dans le même angle en direction circonférentielle.
  5. Tambour à linge (2) selon l'une quelconque des revendications précédentes, au moins un estampage (17) présentant un écart radial par rapport à un bord extérieur de la zone de passage d'air (15) perforée.
  6. Tambour à linge selon l'une quelconque des revendications précédentes, au moins un estampage s'étendant jusqu'à un bord extérieur de la zone de passage d'air perforée.
  7. Tambour à linge (2) selon l'une quelconque des revendications précédentes, une partie de bord (16), se recourbant vers l'intérieur, de la paroi arrière de tambour (14) étant réalisée sans perforations.
  8. Sèche-linge (1) présentant un tambour à linge (2) selon l'une quelconque des revendications précédentes.
EP15800836.7A 2014-12-15 2015-11-25 Tambour de lave-linge avec panneau de fond perforé Active EP3234252B1 (fr)

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 (fr) 2014-12-15 2015-11-25 Tambour à linge avec paroi arrière de tambour perforée

Publications (2)

Publication Number Publication Date
EP3234252A1 EP3234252A1 (fr) 2017-10-25
EP3234252B1 true EP3234252B1 (fr) 2020-01-08

Family

ID=54703988

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15800836.7A Active EP3234252B1 (fr) 2014-12-15 2015-11-25 Tambour de lave-linge avec panneau de fond perforé

Country Status (5)

Country Link
EP (1) EP3234252B1 (fr)
CN (1) CN107002337B (fr)
DE (1) DE102014225873A1 (fr)
PL (1) PL3234252T3 (fr)
WO (1) WO2016096350A1 (fr)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
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 (fr) * 2011-11-08 2013-05-15 Electrolux Home Products Corporation N.V. Sèche-linge à tambour rotatif

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
PL3234252T3 (pl) 2020-07-27
WO2016096350A1 (fr) 2016-06-23
DE102014225873A1 (de) 2016-06-16
CN107002337A (zh) 2017-08-01
CN107002337B (zh) 2019-12-06
EP3234252A1 (fr) 2017-10-25

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