EP2149633B1 - Trommelwaschmaschine - Google Patents

Trommelwaschmaschine Download PDF

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Publication number
EP2149633B1
EP2149633B1 EP08161403.4A EP08161403A EP2149633B1 EP 2149633 B1 EP2149633 B1 EP 2149633B1 EP 08161403 A EP08161403 A EP 08161403A EP 2149633 B1 EP2149633 B1 EP 2149633B1
Authority
EP
European Patent Office
Prior art keywords
drum
flange
washing machine
type washing
shaped device
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
EP08161403.4A
Other languages
English (en)
French (fr)
Other versions
EP2149633A1 (de
Inventor
Davide Morosi
Pavol Petracek
Dusan Heldak
Pavol Vasko
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
Application filed by Whirlpool Corp filed Critical Whirlpool Corp
Priority to EP08161403.4A priority Critical patent/EP2149633B1/de
Priority to ES08161403.4T priority patent/ES2442543T3/es
Priority to PL08161403T priority patent/PL2149633T3/pl
Publication of EP2149633A1 publication Critical patent/EP2149633A1/de
Application granted granted Critical
Publication of EP2149633B1 publication Critical patent/EP2149633B1/de
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

Definitions

  • the present invention relates to a drum type washing machine as known e.g. from WO 03/08915A . More particularly, the present invention relates to a washing machine comprising a tub having a wall for holding washing water therein, a metal drum rotatably arranged inside the tub, and at least a shaft passed through the tub and connected to the drum by means of a metal flange-shaped device.
  • the tub is provided with at least a ball or roller bearing supporting the shaft, and one of the shaft is connected to the drum also for transmission of a driving power from a motor to the drum, such motor driving the shaft by means of a belt and pulley system or a direct drive system.
  • both the drum and the flange-shaped device are made of metal.
  • the metal of the drum usually stainless steel
  • the metal of the flange-shaped device usually aluminium or aluminium alloy
  • the difference between the metals used for the drum and the flange has created unexpected problems of severe corrosion of the flange and its integral shaft due to the direct contact with the metal of the drum, without adequate ventilation or cleaning of the contact zone.
  • the mechanism of such corrosion is not entirely known for the time being and it could derive from the growing, in an anaerobic environment, of a sort of bio layer which corrodes progressively the less resistant metal (for instance the aluminium).
  • channel shaped portions are created between the flange-shaped device and the drum in order to allow air ventilation and circulation of water in the contact zone between flange and drum. Tests carried out by the applicant have shown that the above corrosion problem have been completely solved by the peculiar geometry of the connection area between the flange and the drum.
  • a top-loading washing machine 10 has a metal structure 12 with a door 12a supporting a plurality of detergent dispensers D.
  • the metal structure 12 supports a plastic tub 14 in which water and detergent can be load in a known manner.
  • the tub presents two roll bearings 16 which rotatably support two shafts 18, 20 centrally fixed to or integral with circular flanges 22 made of aluminium alloy.
  • One of the shaft, the shaft 20 in the drawings, is connected to a pulley (not shown) for being driven by an electric motor (not shown) supported by the tub 14.
  • Each flange 22 is centrally fixed to a side wall 24a of a drum 24 made of stainless steel.
  • each flange 22 is fixed to a lowered central portion 26 of the drum 24 by means of rivets 28 or similar fastening devices.
  • the drum 24 is provided with an inner door (not shown) that, in the loading or unloading condition of the washing machine, faces the outside door 12a.
  • Figure 5 shows the shape of the central portion 26 of each side wall 24a of the drum 24.
  • Such portion 26 is provided with a ring area 28 having a plurality of lowered portions 28a defined by raised portions 28b against which the flange 22 is in contact.
  • a dome-shaped zone 30 detached from the flange 22.
  • FIGs 7-9 show a second embodiment of the invention, where similar components are indicated with the same references used for the first embodiment.
  • each side wall 24a of the drum 24 is provided with a plurality of radial lowered portions 34 which start from the dome central zone 30 and end further beyond a central flange 36, which in this embodiment is shaped like a spider or star with a conical disc-shaped central portion 36a and a plurality of tongues 36b with holes 38 for fixing the rivets connecting the flange 36 to the drum 24.
  • the lowered radial portions 34 (which by the way are very easy to be realized by metal dieing and contribute to increase the stiffness of the drum) define gaps 40 between the flange 36 and the drum wall 24a, allowing good ventilation and preventing a corrosion of the flange and the shaft thereof.

Landscapes

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

Claims (10)

  1. Trommelwaschmaschine, umfassend eine Wanne (14) mit einer Wand zum Halten von Waschwasser, eine Metalltrommel (24, 24a), die drehbar im Inneren der Wanne (14) angeordnet ist, mindestens eine Welle (18, 20), die durch die Wanne geführt und mit Hilfe einer flanschförmigen Metallvorrichtung (22, 36) mit der Trommel (24, 24a) verbunden ist, dadurch gekennzeichnet, dass zwischen der Metalltrommel (24, 24a) und der flanschförmigen Vorrichtung (22, 36) Formabschnitte (28a, 34) bereitgestellt sind, die einen Durchtritt von Wasser und/oder Luft zwischen der flanschförmigen Vorrichtung (22, 36) und der Trommel (24) gestatten.
  2. Trommelwaschmaschine nach Anspruch 1, wobei die Formabschnitte (28a, 34) an der Trommel (24, 24a) bereitgestellt sind.
  3. Trommelwaschmaschine nach Anspruch 2, wobei die Zone (28) der Trommel (24, 24a), in der die flanschförmige Vorrichtung (22) mit der Trommel (24, 24a) verbunden ist, ringförmig mit mehreren vertieften Bereichen (28a) ist, die von der flanschförmigen Vorrichtung (22) getrennt sind.
  4. Trommelwaschmaschine nach Anspruch 2, wobei die Trommel (24, 24a) mit radialen vertieften Bereichen (34) versehen ist, die den Durchtritt von Wasser und/oder Luft gestatten.
  5. Trommelwaschmaschine nach Anspruch 3, wobei die flanschförmige Vorrichtung (22) eine Scheibe mit einer mittigen integrierten Welle (18, 20) ist.
  6. Trommelwaschmaschine nach Anspruch 4, wobei die flanschförmige Vorrichtung (36) einen mittigen, konischen, scheibenförmigen Abschnitt (36a) und mehrere außenliegende Zungen (36b) zum Befestigen der flanschförmigen Vorrichtung (36) an der Trommel (24, 24a) aufweist.
  7. Trommelwaschmaschine nach Anspruch 4 und 6, wobei sich die radialen vertieften Bereiche (34) über den mittigen, konischen, scheibenförmigen Abschnitt (36a) der flanschförmigen Vorrichtung (36) hinaus erstrecken.
  8. Trommelwaschmaschine nach einem der vorhergehenden Ansprüche, wobei sich das Metall der Trommel (24, 24a) von dem Metall der flanschförmigen Vorrichtung (22, 36) unterscheidet.
  9. Trommelwaschmaschine nach Anspruch 8, wobei die Trommel (24, 24a) aus Edelstahl besteht und die flanschförmige Vorrichtung (22, 36) aus Aluminium oder Aluminiumlegierung besteht.
  10. Trommelwaschmaschine nach einem der vorhergehenden Ansprüche, wobei die Waschmaschine ein Toplader mit zwei Wellen (18, 20) ist.
EP08161403.4A 2008-07-30 2008-07-30 Trommelwaschmaschine Active EP2149633B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP08161403.4A EP2149633B1 (de) 2008-07-30 2008-07-30 Trommelwaschmaschine
ES08161403.4T ES2442543T3 (es) 2008-07-30 2008-07-30 Una máquina lavadora del tipo de tambor
PL08161403T PL2149633T3 (pl) 2008-07-30 2008-07-30 Pralka bębnowa

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08161403.4A EP2149633B1 (de) 2008-07-30 2008-07-30 Trommelwaschmaschine

Publications (2)

Publication Number Publication Date
EP2149633A1 EP2149633A1 (de) 2010-02-03
EP2149633B1 true EP2149633B1 (de) 2013-12-18

Family

ID=40228052

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08161403.4A Active EP2149633B1 (de) 2008-07-30 2008-07-30 Trommelwaschmaschine

Country Status (3)

Country Link
EP (1) EP2149633B1 (de)
ES (1) ES2442543T3 (de)
PL (1) PL2149633T3 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104805631B (zh) * 2015-05-12 2017-03-01 康红宾 易拆卸内筒的滚筒洗衣机

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1635578A (en) * 1922-05-04 1927-07-12 Gen Railway Signal Co Washing-machine cylinder
RU2337194C2 (ru) * 2002-03-26 2008-10-27 Арчелык А.Ш. Барабан для стиральной/сушильной машины

Also Published As

Publication number Publication date
ES2442543T3 (es) 2014-02-12
EP2149633A1 (de) 2010-02-03
PL2149633T3 (pl) 2014-04-30

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