EP1925704A1 - Waschmaschinetrommel und Waschmaschine mit einer solchen Trommel. - Google Patents

Waschmaschinetrommel und Waschmaschine mit einer solchen Trommel. Download PDF

Info

Publication number
EP1925704A1
EP1925704A1 EP06124786A EP06124786A EP1925704A1 EP 1925704 A1 EP1925704 A1 EP 1925704A1 EP 06124786 A EP06124786 A EP 06124786A EP 06124786 A EP06124786 A EP 06124786A EP 1925704 A1 EP1925704 A1 EP 1925704A1
Authority
EP
European Patent Office
Prior art keywords
drum
bulges
washing machine
perforations
bulge
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
EP06124786A
Other languages
English (en)
French (fr)
Other versions
EP1925704B1 (de
Inventor
Bernd Luettge
Dieter Grimm
Stefanie Oberkirsch
Kraus Hartmut
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.)
Whirlpool Corp
Original Assignee
Whirlpool Corp
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=37891621&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1925704(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Whirlpool Corp filed Critical Whirlpool Corp
Priority to EP20060124786 priority Critical patent/EP1925704B1/de
Priority to ES06124786T priority patent/ES2362002T3/es
Priority to DE200660020594 priority patent/DE602006020594D1/de
Publication of EP1925704A1 publication Critical patent/EP1925704A1/de
Application granted granted Critical
Publication of EP1925704B1 publication Critical patent/EP1925704B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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

Definitions

  • the present invention relates to a drum adapted to be rotatably mounted in a washing machine or washer-dryer, said drum having a cylindrical wall provided with perforations and with a plurality of bulges.
  • a drum of this kind is shown in EP-A-1028189 in which the bulges or raised sections are oriented towards the interior of the drum.
  • the perforations or openings are provided in indentations between the bulges.
  • DE-A-4437986 discloses a method to form a cylindrical structure with bulges in form of different polygons. Bulges having a square pattern are disclosed, but no detail is given as far as the perforations and bulge shape are concerned.
  • EP-A-935687 discloses a drum for washing machines in which bulges are still oriented towards the interior of the drum, and in which perforations are provided on the edge contours of the bulges.
  • An object of the present invention is to provide a drum of the type mentioned above which increases the gentleness of laundry treatment in high spin speed drums and in which the stiffness of the drum basket is increased.
  • One of the main features of the present invention is to provide bulges which are oriented towards the exterior of the drum and in which the perforations are centred within the bulges.
  • each bulge is punched like a frustum of pyramid from the inside of the drum, and each perforation or hole is in the centre of each punch.
  • the pyramid-shape bulges are arranged in a rows/columns matrix, in which the position of a column of bulges to the next column of adjacent bulges is offset of 1/3 of the distance between two adjacent rows, which is also the pitch between bulges.
  • a particular advantage of the drum according to the invention is the possibility to change the distance of one row of pyramid-shaped bulges to the next one without reducing distance of punched areas. Flat space between bulges will not increase by changing offset. Moerover, changing the offset will not change the shape of the bulges.
  • the bulges are shaped in order to avoid substantially flat area between bulges so that water drops will be immediately on an inclined/deformed surface and then driven towards perforations due to the centrifugal force and funnel-shaped bulges.
  • Another important advantage of the present invention is the increase of drum stiffness in bending, which is around 25% if compared to known drums of washing machines.
  • a drum 10 of a washing machine comprises a cylindrical metal wall 12 closed at one end by a substantially flat rear wall (not shown) and presenting, on its other end, an opening 14 for loading/unloading laundry (the opening 14 being aligned with a door - not shown - of the washing machine).
  • the drum shown in figure 1 is for the mounting thereof in the tub of a front loading washing machine, nevertheless the drum can have two opposite end walls and it can be used in a top loading washer as well (in this latter a closable opening for loading/unloading laundry being provided in the cylindrical wall of the drum).
  • the wall 12 of the drum 10 is provided with a plurality of bulges 16 arranged in a sort of row-column matrix as shown in figures 1 and 2.
  • the columns of the matrix, indicated with reference Y, are all parallel among them and to the rotational axis of the drum 10 as well, indicated with reference R.
  • each column Y is offset 1/3 of the pitch P between each bulge 16.
  • Such offset is indicated with reference K in figure 2. Due to this offset K of adjacent columns of the matrix, it is not possible to identify parallel rows of the matrix, rather “irregular" rows of the matrix of bulges.
  • the applicant has tested this arrangement with others and it has been considered as the preferred one in term either of drum stiffness or gentle treatment of laundry during washing. Nevertheless also a regular matrix pattern of the bulges, or an offset K of different value (for instance a 1 ⁇ 2 offset) offers many technical advantages compared to the prior art and has to be considered within the scope of the present invention.
  • Each bulge has a square base and has a centred perforation or hole 18 for the passage of water during the washing/drying process.
  • the distance between adjacent bulges is chosen in order to reduce or avoid any flat surface of the drum therebetween.
  • the holes 18 are obtained by punching the metal sheet of the wall 12 and the direction of punching is from the inside of the drum 10 to the outside thereof, in order to avoid burrs.
  • each bulge 16 is shown in figures 3 and 4. Since the shape is substantially a frustum of pyramid, at least two different regions can be identified: a first region defined by inclined flat walls 16a radiused by corner zones 16b and a second region defined by a bottom flat wall 16c (top of the frustum of pyramid) in which the corresponding hole 18 is centrally located.
  • the above described shape of the bulges 16, together with the hole design, has given a surprising increase of the drum stiffness, particularly with reference to shear and bending.
  • the new design is particularly advantageous in term of its bending stiffness, which is the most important mechanical features when the drum rotates at high speeds, as in the modern high spin speed washers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
EP20060124786 2006-11-24 2006-11-24 Waschmaschinetrommel und Waschmaschine mit einer solchen Trommel. Active EP1925704B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP20060124786 EP1925704B1 (de) 2006-11-24 2006-11-24 Waschmaschinetrommel und Waschmaschine mit einer solchen Trommel.
ES06124786T ES2362002T3 (es) 2006-11-24 2006-11-24 Tambor para una máquina de lavar y máquina de lavar provista de dicho tambor.
DE200660020594 DE602006020594D1 (de) 2006-11-24 2006-11-24 Waschmaschinetrommel und Waschmaschine mit einer solchen Trommel.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20060124786 EP1925704B1 (de) 2006-11-24 2006-11-24 Waschmaschinetrommel und Waschmaschine mit einer solchen Trommel.

Publications (2)

Publication Number Publication Date
EP1925704A1 true EP1925704A1 (de) 2008-05-28
EP1925704B1 EP1925704B1 (de) 2011-03-09

Family

ID=37891621

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20060124786 Active EP1925704B1 (de) 2006-11-24 2006-11-24 Waschmaschinetrommel und Waschmaschine mit einer solchen Trommel.

Country Status (3)

Country Link
EP (1) EP1925704B1 (de)
DE (1) DE602006020594D1 (de)
ES (1) ES2362002T3 (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1964960A2 (de) 2007-02-28 2008-09-03 Samsung Electronics Co., Ltd. Waschmaschine mit verbesserter Wascheffizienz
CN101845739A (zh) * 2009-03-23 2010-09-29 海尔集团公司 具有高效率洗涤和脱水结构的洗衣机内桶
GB2473224A (en) * 2009-09-03 2011-03-09 John Vincent Flanagan Detergent-less washing machine
CZ302335B6 (cs) * 2010-05-03 2011-03-16 Primus Ce S.R.O. Buben pracky
EP2372010A1 (de) * 2010-04-01 2011-10-05 Electrolux Home Products Corporation N.V. Drehtrommel für Waschmaschinen und Verfahren zur Montage der Drehtrommel
EP2455531A1 (de) * 2010-11-23 2012-05-23 Vestel Beyaz Esya Sanayi Ve Ticaret A.S. Trommeloberfläche für Waschmaschinen
EP2628839A1 (de) * 2012-02-18 2013-08-21 Samsung Electronics Co., Ltd Waschmaschine
CN104420124A (zh) * 2013-08-29 2015-03-18 海尔集团公司 一种洗衣机内桶及洗衣机
CN105063962A (zh) * 2015-08-05 2015-11-18 合肥美的洗衣机有限公司 洗衣机
CN105220404A (zh) * 2014-06-20 2016-01-06 无锡小天鹅股份有限公司 洗衣机及其内筒
US20180355538A1 (en) * 2017-06-08 2018-12-13 Lg Electronics Inc. Drum of washing machine
EP3715522A1 (de) * 2019-03-26 2020-09-30 Electrolux Appliances Aktiebolag Waschtrommel für eine wäschewaschmaschine und wäschewaschmaschine mit solch einer trommel
WO2023009096A1 (en) * 2021-07-29 2023-02-02 Vestel Beyaz Esya Sanayi Ve Ticaret Anonim Sirketi A drum for household appliances

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10036113B2 (en) 2013-07-22 2018-07-31 Whirlpool Corporation Laundry treating appliance with embossed container
USD761501S1 (en) 2013-09-27 2016-07-12 Whirlpool Corporation Container for clothes washing machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2006836A (en) * 1977-09-26 1979-05-10 Fisher & Paykel Spin Drying Clothes Washing Machine
DE29705226U1 (de) 1997-03-22 1998-07-23 AEG Hausgeräte GmbH, 90429 Nürnberg Waschtrommel für eine Waschmaschine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2006836A (en) * 1977-09-26 1979-05-10 Fisher & Paykel Spin Drying Clothes Washing Machine
DE29705226U1 (de) 1997-03-22 1998-07-23 AEG Hausgeräte GmbH, 90429 Nürnberg Waschtrommel für eine Waschmaschine

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8438883B2 (en) 2007-02-28 2013-05-14 Samsung Electronics Co., Ltd. Washing machine improving washing efficiency
EP1964960A2 (de) 2007-02-28 2008-09-03 Samsung Electronics Co., Ltd. Waschmaschine mit verbesserter Wascheffizienz
US8266931B2 (en) 2007-02-28 2012-09-18 Samsung Electronics Co., Ltd. Washing machine improving washing efficiency
EP1964960B1 (de) * 2007-02-28 2016-06-08 Samsung Electronics Co., Ltd. Waschmaschine mit verbesserter Wascheffizienz
CN101845739A (zh) * 2009-03-23 2010-09-29 海尔集团公司 具有高效率洗涤和脱水结构的洗衣机内桶
CN101845739B (zh) * 2009-03-23 2013-08-07 海尔集团公司 具有高效率洗涤和脱水结构的洗衣机内桶
GB2473224A (en) * 2009-09-03 2011-03-09 John Vincent Flanagan Detergent-less washing machine
EP2372010A1 (de) * 2010-04-01 2011-10-05 Electrolux Home Products Corporation N.V. Drehtrommel für Waschmaschinen und Verfahren zur Montage der Drehtrommel
WO2011121014A1 (en) * 2010-04-01 2011-10-06 Electrolux Home Products Corporation N.V. Rotatable drum for laundry washing machines and assembly method of the rotatable drum
CN102884238A (zh) * 2010-04-01 2013-01-16 伊莱克斯家用产品股份有限公司 用于洗衣机的可旋转滚筒和可旋转滚筒的组装方法
AU2011234515B2 (en) * 2010-04-01 2015-03-26 Electrolux Home Products Corporation N.V. Rotatable drum for laundry washing machines and assembly method of the rotatable drum
CN102884238B (zh) * 2010-04-01 2016-08-03 伊莱克斯家用产品股份有限公司 用于洗衣机的可旋转滚筒和可旋转滚筒的组装方法
CZ302335B6 (cs) * 2010-05-03 2011-03-16 Primus Ce S.R.O. Buben pracky
EP2455531A1 (de) * 2010-11-23 2012-05-23 Vestel Beyaz Esya Sanayi Ve Ticaret A.S. Trommeloberfläche für Waschmaschinen
EP2628839A1 (de) * 2012-02-18 2013-08-21 Samsung Electronics Co., Ltd Waschmaschine
CN104420124A (zh) * 2013-08-29 2015-03-18 海尔集团公司 一种洗衣机内桶及洗衣机
US20160215431A1 (en) * 2013-08-29 2016-07-28 Haier Group Corporation Washing machine inner drum and washing machine having same
CN104420124B (zh) * 2013-08-29 2018-05-22 青岛海尔滚筒洗衣机有限公司 一种洗衣机内桶及洗衣机
CN105220404A (zh) * 2014-06-20 2016-01-06 无锡小天鹅股份有限公司 洗衣机及其内筒
CN105063962A (zh) * 2015-08-05 2015-11-18 合肥美的洗衣机有限公司 洗衣机
CN105063962B (zh) * 2015-08-05 2018-09-18 合肥美的洗衣机有限公司 洗衣机
US20180355538A1 (en) * 2017-06-08 2018-12-13 Lg Electronics Inc. Drum of washing machine
US11519119B2 (en) * 2017-06-08 2022-12-06 Lg Electronics Inc. Drum of washing machine
EP3715522A1 (de) * 2019-03-26 2020-09-30 Electrolux Appliances Aktiebolag Waschtrommel für eine wäschewaschmaschine und wäschewaschmaschine mit solch einer trommel
WO2023009096A1 (en) * 2021-07-29 2023-02-02 Vestel Beyaz Esya Sanayi Ve Ticaret Anonim Sirketi A drum for household appliances

Also Published As

Publication number Publication date
DE602006020594D1 (de) 2011-04-21
ES2362002T3 (es) 2011-06-27
EP1925704B1 (de) 2011-03-09

Similar Documents

Publication Publication Date Title
EP1925704B1 (de) Waschmaschinetrommel und Waschmaschine mit einer solchen Trommel.
US6334341B1 (en) Cylinder washing machine
EP1293594B1 (de) Wäschetrockner mit Trommel
EP1602772B1 (de) Haushaltsgerät Gehäuse-Wandteil mit erhöhter Eigenfrequenz
US9951453B2 (en) Washing machine and method of manufacturing washing tub being provided therein
EP2628839A1 (de) Waschmaschine
US7752872B2 (en) Basket for washing machine, washer-dryer, dryer and the like
US7661203B2 (en) Basket for washing machine, washer-dryer, and the like
EP3412823B1 (de) Trommel einer waschmaschine
EP1760183A2 (de) Waschmachine und/oder Trockner mit einem versteiften Dämpferlager
EP3715522B1 (de) Waschtrommel für eine wäschewaschmaschine und wäschewaschmaschine mit solch einer trommel
EP2434040A2 (de) Trommel für Wasch- und/oder Trocknungsmaschinen
EP3240924B1 (de) Waschmaschinentrommel und befestigungsanordnung für wäschemitnehmer
US20050044899A1 (en) Drum-type washing machine having a laundry drum which can be loaded from the front
EP2325367A1 (de) Trommel für Waschmaschinen und Wäschetrockner
BE1029571B1 (de) Trommel für eine Waschmaschine und Waschmaschine
US6776015B2 (en) Perforation of laundry machine drum
CN114269979B (zh) 滚筒式洗涤装置
KR102434110B1 (ko) 세탁장치의 드럼
EP2386677A1 (de) Trommel einer Waschmaschine
KR20240107827A (ko) 의류처리장치 및 드럼의 제조 방법
CN1746400A (zh) 洗衣机

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

17P Request for examination filed

Effective date: 20081028

17Q First examination report despatched

Effective date: 20081218

AKX Designation fees paid

Designated state(s): DE ES FR GB IT

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAC Information related to communication of intention to grant a patent modified

Free format text: ORIGINAL CODE: EPIDOSCIGR1

GRAC Information related to communication of intention to grant a patent modified

Free format text: ORIGINAL CODE: EPIDOSCIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE ES FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 602006020594

Country of ref document: DE

Date of ref document: 20110421

Kind code of ref document: P

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602006020594

Country of ref document: DE

Effective date: 20110421

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2362002

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20110627

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20111212

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602006020594

Country of ref document: DE

Effective date: 20111212

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121124

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20161011

Year of fee payment: 11

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 13

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171125

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20210930

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20211109

Year of fee payment: 16

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230522

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20221124

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221124

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20221130

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20231127

Year of fee payment: 18