EP3899124B1 - Wäschewaschtrockner mit einem behälter mit verbesserter mechanischer festigkeit - Google Patents

Wäschewaschtrockner mit einem behälter mit verbesserter mechanischer festigkeit Download PDF

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Publication number
EP3899124B1
EP3899124B1 EP19901245.1A EP19901245A EP3899124B1 EP 3899124 B1 EP3899124 B1 EP 3899124B1 EP 19901245 A EP19901245 A EP 19901245A EP 3899124 B1 EP3899124 B1 EP 3899124B1
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EP
European Patent Office
Prior art keywords
tub
rear wall
dryer
radial ribs
laundry washer
Prior art date
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Active
Application number
EP19901245.1A
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English (en)
French (fr)
Other versions
EP3899124A4 (de
EP3899124A1 (de
Inventor
Cahit ATAGUN
Yunus Emre AYDOGDU
Ata MUGAN
Recep Ayas
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.)
Arcelik AS
Original Assignee
Arcelik AS
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Publication date
Application filed by Arcelik AS filed Critical Arcelik AS
Publication of EP3899124A1 publication Critical patent/EP3899124A1/de
Publication of EP3899124A4 publication Critical patent/EP3899124A4/de
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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
    • D06F37/26—Casings; Tubs
    • D06F37/264—Tubs provided with reinforcing structures, e.g. ribs, inserts, braces
    • 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
    • D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air 
    • 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
    • D06F37/267—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups
    • D06F37/269—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups for the bearing of the rotary receptacle

Definitions

  • the present invention relates to a laundry washer-dryer having a tub produced from plastic material.
  • washing and drying processes are realized by placing the laundry into a drum moving in the tub.
  • the tub is produced from rigid thermoplastic material such as polyethylene or polypropylene due its high chemical resistance values and low costs.
  • the drum makes rotational movement in the tub.
  • the unbalanced load caused by the laundry in the drum and the forces generated during the spin-drying step of the laundry washer-dryer strain the tub.
  • Especially the surrounding area around the hub where the shaft rotating the drum is borne in the ball bearing in the tub is subjected to mechanical loads, thus causing wear or cracking risks in time.
  • At least the rear wall of the tub is required to be produced from materials with high mechanical strength, which increases the production costs.
  • a plastic tub for a washing machine which includes a cylindrical casing, and an end face wall sealing the cylindrical casing, wherein the end face includes a bearing mount for a shaft of a laundry drum and radially-aligned reinforcing ribs molded into the end face wall.
  • the reinforcing ribs begin at the bearing mount and branch in a Y-shape along their radial extent.
  • the aim of the present invention is the realization of a laundry washer-dryer which comprises a tub with increased mechanical strength.
  • the rear wall of the tub are provided with inner radial ribs which are in the form of a hyperbolic open curve, which have a curved section and two symmetrical arms which extend symmetrically in the radial direction from the vertex of the curved section towards the tub on the inside, and which are positioned all around the hub.
  • Outer radial ribs which are again in the form of a hyperbolic open curve and which have arms extending from inside to the outside in a direction opposite to the inner radial ribs.
  • the laundry washer-dryer (1) comprises a drum (2) which is rotated around the horizontal axis by a motor (13) and wherein the laundry is placed, a shaft (14) which transmits the movement received from the motor (13) to the drum (2), and a tub (5) wherein the drum (2) moves, which is produced from plastic (rigid thermoplastic) and which has a circular front wall with the laundry loading opening arranged at the center thereof, a cylindrical side wall, a circular rear wall (3) and a hub (4) which is arranged at the rear wall (3) and where the shaft (14) is borne with the ball bearing (15).
  • plastic rigid thermoplastic
  • the laundry washer-dryer (1) of the present invention comprises a plurality of inner radial ribs (9)
  • the arms (8) of the inner radial ribs (9) extend on the rear wall (3) from the curved sections (6) towards the hub (4) from outside to inside.
  • the laundry washer-dryer (1) furthermore comprises a plurality of outer radial ribs (10)
  • the laundry washer/dryer (1) comprises at least one circumferential rib
  • At least one circumferential rib (11) is composed of arc-shaped segments (12) which are inwardly concave in the radial direction.
  • the strength of the tub (5) rear wall (3) increases and bending under load decreases.
  • the rear wall (3) of the tub (5) of the laundry washer-dryer (1) of the present invention in particular the region of the rear wall (3) around the hub (4) bearing the shaft (14) is strengthened against mechanical stress.
  • the hyperbolic inner radial ribs (9) disposed around the hub (4) at the rear wall (3) transfer the tensions created by the balanced and unbalanced load in the drum (2) on the hub (4) of the tub (5) rear wall (3) to the outer radial ribs (10), the strain is homogeneously distributed along the rear wall (3) and thus the strength of the tub (5) is increased.
  • the amount of plastic raw material used and thus material costs are decreased.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Claims (4)

  1. - Ein Wäschewaschtrockner (1) umfasst eine Trommel (2), die von einem Motor (13) um eine horizontale Achse gedreht wird und in der die Wäsche abgelegt wird, einen Schaft (14), die die vom Motor (13) empfangene Bewegung auf die Trommel (2) überträgt, und eine Wanne (5), in der sich die Trommel (2) bewegt, die aus Kunststoff hergestellt ist und die eine kreisförmige Rückwand (3) und eine an der Rückwand (3) angeordnete Nabe (4), in der die Welle (14) kugelgelagert ist, und eine Vielzahl von inneren Radialrippen (9) aufweist
    - die aus Kunststoff gefertigt und an der Rückwand (3) der Wanne (5) integriert sind,
    - die die Form einer hyperbolischen offenen Kurve haben, deren hyperbolische Kosinusfunktion als "hyperbolische Kosinusfunktion: f(x) = cosh (x)" definiert ist,
    - das einen gekrümmten Abschnitt (6) und zwei symmetrische Arme (8) aufweist, die sich vom Scheitelpunkt (7) des gekrümmten Abschnitts (6) in radialer Richtung symmetrisch nach innen erstrecken
    - die rundum um die Nabe (4) positioniert sind.
  2. - Ein Wäschewaschtrockner (1), wie in Anspruch 1 aufgeführt, umfasst eine Vielzahl von äußeren radialen Rippen (10), die in die Rückwand (3) der Wanne (5) integriert sind, die die Form einer hyperbolischen offenen Kurve haben und die gemeinsame oder benachbarte Scheitelpunkte (7) mit inneren radialen Rippen (9) aufweisen, die gekrümmten Abschnitte (6) Rücken an Rücken mit den gekrümmten Abschnitten (6) der inneren radialen Rippen (9) positioniert sind und zwei symmetrische Arme (8), die sich von den Scheitelpunkten (7) nach außen in eine Richtung entgegengesetzt zu den inneren radialen Rippen (9) und in Richtung des äußeren Umfangs der Rückwand (3) erstrecken.
  3. - Ein Wäschewaschtrockner (1), wie in Anspruch 1 oder 2 aufgeführt, umfasst mindestens eine umlaufende Rippe (11), die konzentrisch in die Rückwand (3) der Wanne (5) integriert ist und einen Durchmesser aufweist, der kleiner ist als der Außendurchmesser der Rückwand und größer als ein Kreis, der von den Scheitelpunkten (7) der inneren radialen Rippen (9) und der äußeren radialen Rippen (10) gebildet wird.
  4. - Ein Wäschewaschtrockner (1), wie in Anspruch 3 aufgeführt, umfasst mindestens eine umlaufende Rippe (11), die aus bogenförmigen Segmenten (12) besteht, die in radialer Richtung nach innen konkav sind.
EP19901245.1A 2018-12-18 2019-05-22 Wäschewaschtrockner mit einem behälter mit verbesserter mechanischer festigkeit Active EP3899124B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2018/19632A TR201819632A2 (tr) 2018-12-18 2018-12-18 Mekani̇k dayanimi arttirilan kazana sahi̇p çamaşir yikayici-kurutucu
PCT/TR2019/050362 WO2020130966A1 (en) 2018-12-18 2019-05-22 A laundry washer-dryer having a tub with improved mechanical strength

Publications (3)

Publication Number Publication Date
EP3899124A1 EP3899124A1 (de) 2021-10-27
EP3899124A4 EP3899124A4 (de) 2022-11-09
EP3899124B1 true EP3899124B1 (de) 2023-11-08

Family

ID=71101507

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Application Number Title Priority Date Filing Date
EP19901245.1A Active EP3899124B1 (de) 2018-12-18 2019-05-22 Wäschewaschtrockner mit einem behälter mit verbesserter mechanischer festigkeit

Country Status (3)

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EP (1) EP3899124B1 (de)
TR (1) TR201819632A2 (de)
WO (1) WO2020130966A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230064111A1 (en) * 2021-08-30 2023-03-02 Whirlpool Corporation Structured geometry for a tub rear wall of a laundry appliance

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19756516A1 (de) * 1997-12-18 1999-06-24 Bosch Siemens Hausgeraete Aus dünnwandigem Blech bestehendes Geräteteil
US7997103B2 (en) 2002-12-10 2011-08-16 Lg Electronics Inc. Tub having structurally strengthened rear wall and washing machine with the same therein
KR20080040338A (ko) 2006-11-03 2008-05-08 엘지전자 주식회사 드럼 세탁기
EA017274B1 (ru) * 2007-09-20 2012-11-30 Бсх Бош Унд Сименс Хаусгерете Гмбх Пластиковый бак для стиральной или стирально-сушильной машины
DE102007044883A1 (de) * 2007-09-20 2009-04-09 BSH Bosch und Siemens Hausgeräte GmbH Kunststoff-Laugenbehälter für eine Waschmaschine oder einen Waschtrockner
ES2399674B1 (es) 2010-12-06 2014-03-27 BSH Electrodomésticos España S.A. Método de fabricar una sección de cuba para una máquina lavadora
US10704180B2 (en) * 2016-09-22 2020-07-07 Whirlpool Corporation Reinforcing cap for a tub rear wall of an appliance
EP3330428B1 (de) * 2016-11-30 2020-11-18 BSH Hausgeräte GmbH Bottich eines wäschetrocknungsgeräts

Also Published As

Publication number Publication date
WO2020130966A1 (en) 2020-06-25
TR201819632A2 (tr) 2020-07-21
EP3899124A4 (de) 2022-11-09
EP3899124A1 (de) 2021-10-27

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