EP2405050A1 - Machine à laver - Google Patents

Machine à laver Download PDF

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Publication number
EP2405050A1
EP2405050A1 EP10168811A EP10168811A EP2405050A1 EP 2405050 A1 EP2405050 A1 EP 2405050A1 EP 10168811 A EP10168811 A EP 10168811A EP 10168811 A EP10168811 A EP 10168811A EP 2405050 A1 EP2405050 A1 EP 2405050A1
Authority
EP
European Patent Office
Prior art keywords
filter element
washing machine
sump
machine according
tub
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.)
Withdrawn
Application number
EP10168811A
Other languages
German (de)
English (en)
Inventor
Paolo Olivaro
Marco Clara
Emanuele Vitalini
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.)
Electrolux Home Products Corp NV
Original Assignee
Electrolux Home Products Corp NV
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 Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to EP10168811A priority Critical patent/EP2405050A1/fr
Priority to CN2011101903168A priority patent/CN102312368A/zh
Publication of EP2405050A1 publication Critical patent/EP2405050A1/fr
Withdrawn legal-status Critical Current

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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
    • D06F37/261—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements
    • D06F37/263—Tubs made by a specially selected manufacturing process or characterised by their assembly from elements assembled from at least two elements connected to each other; Connecting or sealing means therefor
    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/10—Filtering arrangements

Definitions

  • the present invention relates to a washing machine comprising a filter element.
  • EP 0 534 381 B1 discloses a discharge device for washing machines, wherein a filter is formed in one piece at the bottom of a tub of the washing machine.
  • EP 0 110 482 A1 discloses a washing machine.
  • a tub of the washing machine comprises at its bottom a cavity which communicates with a compartment, which in turn communicates with a conduit connected to a draining pump.
  • the cavity communicates with the compartment via an orifice in form of a slit, whereby it is prevented that solid bodies enter a draining circuit.
  • GB 1,197,919 B discloses a washing machine, wherein a glass filter element is placed in a sump at the bottom of a tub of the washing machine.
  • EP 1 849 910 B1 , EP 1 849 904 A1 , EP 1 849 910 A1 discloses a top-loading washing machine, wherein a sump is located at a bottom of a tub of the washing machine. A basket containing a filter is placed in the sump.
  • a washing machine comprises a tub, which in turn comprises (e.g. is composed of) at least two shells which are connected to one another. In particular the shells are connected such that the connection is watertight.
  • the bottom of the tub comprises a sump for collecting foreign objects like coins etc. contained in the drain water during/after a washing operation of the machine.
  • the sump is formed by a well or trough extending downward at the bottom of the tub (and forming part thereof) and is designed to hold and collect washing water.
  • the washing machine further comprises a draining circuit which is connected to the sump, wherein a first shell of the tub comprises the sump and a second shell of the tub comprises at least a portion of the draining circuit.
  • the washing machine comprises a filter element for retaining (with holding) foreign bodies in the sump, i.e. the filter element is placed between the sump and the draining circuit.
  • the filter element prevents that foreign objects reach the draining circuit, in particular a draining pump thereof, when water is drained from the washing machine, i.e. the tub.
  • the filter element is fixed in its position by the connection of the first shell and the second shell. In other words, the filter element itself hasn't to be separately fixed to the tub. With a single assembling step the connection between the two shells is provided as well as the filter element is mounted on or fastened of or in the tub. As no additional fastening step for the filter element is needed, the steps during assembly of the tub i.e. the washing machine are reduced and therefore assembling simplified and the assembling time reduced.
  • the filter is designed such that smaller particles like fluff may pass the filter while foreign objects (bigger particles) are retained from passing the filter.
  • the filter element forms at least a portion of the sump, e.g. a side wall and/or bottom wall of the sump or only a part thereof. I.e. no pipe or tube which might be obstructed or clogged by foreign objects is arranged between sump and filter element. Drain water is directly filtered from the sump, i.e. foreign objects are held back within the sump.
  • the filter element comprises a filter wall which forms at least a portion of a lateral or side surface of the sump.
  • the filter element can be formed as a simple and robust wall, which is easy to form and to assemble with the tub.
  • a lower portion of the filter element, in particular of the filter wall is closed, i.e. comprises no openings.
  • a lower portion means in the proximity of the bottom or lower side of the sump.
  • the height of the closed lower portion of the filter element is one fifth, one quarter or one third of the height of the filter element from the bottom of the sump.
  • the filter element comprises at least one opening or aperture which comprises smooth borders, advantageously openings/apertures that have smooth border surfaces in direction of the water flow. Smooth or smoothed borders, in particular smooth edges or rims, improve the water flow and it is avoided that fluff gets caught in the at least one opening.
  • the at least one opening comprises a shape selected from circular, substantially circular, oval, square or rectangular having rounded inside or flow passage corners.
  • the at least one opening of the filter element comprises no corners or at least rounded corners, fluff is not caught in or by the at least one opening.
  • the filter element comprises at least in one plane an arched or bent cross-section and/or is concave seen from the side of the sump.
  • the filter element may have a semicircular or substantially semicircular cross-section.
  • the filter element, in particular the filter wall comprises for example a partial-cylindrical shape or concave shape.
  • the filter element is preferably arched in direction of the water flow, i.e. downstream in direction from the sump to the draining circuit. Due to this feature a foreign object, like e.g. a coin, which abuts against the filter element or the filter wall, cannot completely obstruct an opening of the filter element, as the planar coin cannot seal the arched surface of the filter element.
  • a surface of the filter element comprises at least one recessed or notched portion which extends across the at least one opening of the filter element.
  • the recessed or notched portion is facing the sump side.
  • a recess or notch extending across an opening provides that in case a foreign object like a coin lies atop an opening, water can still flow past the foreign object via the channel formed by the recessed part of the filter element.
  • a surface between at least two openings of the filter element comprises at least one recessed or notched portion.
  • a recessed portion e.g. a rounded or concave shape, between at least two openings connects the openings in form of a channel and provides that water is still able to flow through the filter element, i.e. openings, when a foreign object lies atop an opening.
  • the filter element comprises a structured surface, in particular a plurality of recessed areas and additionally or alternatively elevated areas.
  • a corrugated surface which provides a plurality of channels via which water can still pass the filter element when a foreign object blocks one or more of the openings.
  • the filter element is not removable from the tub, i.e. a user does not have to remove the filter element for cleaning.
  • a user does not have to remove the filter element for cleaning.
  • This is possible due to the particular design of the filter element as described above, which provides a filter element with which a clogging of the filter is avoided, i.e. a cleaning of the filter element, in particular of its openings, is not necessary.
  • the sump can be cleaned or emptied by a user from foreign objects.
  • the sump is reachable via an aperture in a rotatable drum of the washing machine, which is closed during operation of the washing machine by an openable drum lifter.
  • the access to the sump is integrated in a lifter for lifting or agitating the laundry in the washing machine.
  • a lifter cover element can be opened or removed for providing the access from the drum interior to the sump.
  • the sump is not accessible.
  • a chamber of a draining pump of the washing machine is obtained in a single piece construction with one of the shells of the tub. I.e. the chamber does not have to be separately attached to the tub or washing machine, i.e. the assembling steps are reduced, whereby in turn the assembling time is reduced and assembling is simplified.
  • the filter is made of a polymer, e.g. polypropylene, polyamide or polystyrol, and is formed by injection or compression moulding.
  • a polymer e.g. polypropylene, polyamide or polystyrol
  • injection or compression moulding e.g. injection or compression moulding.
  • the design of the filter element can be easily adapted to be kept in position by the tub shells, i.e. the form or shape of the filter element is adapted to engage with the correspondingly formed portions of the tub shells, such that the filter element is fixed by the tub shells and no separate fixing elements for the filter element are necessary.
  • a seal is provided between the at least two shells to provide a watertight connection between them.
  • the seal can be formed by a sealant or sealing compound as well as a gasket.
  • a recirculation circuit is provided downstream the filter element. I.e. the filtered water can be used again in the washing cycle of the washing machine, such that the amount of fresh water required during a washing cycle is reduced.
  • a dimension of a cross-section of the at least one opening is in the range between 4 to 12 mm, more preferably between 6 and 10 mm.
  • washing machine can be implemented in a front-loading washing machine as well as a top-loading washing machine.
  • Fig. 1 shows a cross-sectional side view of a washing machine 1 according to an embodiment of the invention.
  • the washing machine 1 is a front loader having a door 26 and a drum 24 with a preferably horizontal rotation axis.
  • a top-loading washing machine having a drum with horizontal axis can be provided.
  • a first shell 4 of the tub 2 comprises a sump 14, wherein a lateral or side wall of the sump 14 is provided by a filter element or filter 8.
  • the filter element or filter 8 separates the volume of the tub 2 from the draining circuit 16 of the washing machine 1, such that no bigger foreign parts reach the draining circuit 16, in particular the draining pump.
  • foreign parts like coins, screws etc.
  • the foreign objects can be removed from the sump 14 by opening an openable lifter 22 which is mounted on the drum 24 of the washing machine 1.
  • the sump 14 may be not accessible.
  • Fig. 2 shows an exploded view of the tub 2 and filter 8 of Fig. 1 .
  • the filter 8 is held in its position by the connection of the two shells 4, 6 of the tub 2.
  • a seal is provided between the abutting surfaces of the shells 4, 6 to provide a watertight connection between them.
  • the shells 4 and 6 may be connected one another by welding; in this case the seal is preferably not provided.
  • the border of the filter 8 is substantially counter-shaped to the border of the inlet of the draining circuit 16 present in the second shell 6, so that the filter 8 totally obstructs the draining circuit 16, allowing the passage of water, but preventing the passage of foreign bodies (like coins, screws, buttons, etc.) from the sump 14 to the draining circuit 16.
  • foreign bodies like coins, screws, buttons, etc.
  • the border of the filter 8 is clamped between the first and second shells 4, 6, so that the filter 8 is held in its position when the first and second shells 4 and 6 are fastened one another.
  • a seat is provided, not illustrated, adapted for lodging the border of the filter 8, so as to facilitate the positioning of the filter 8 between the first and second shells 4, 6, in particular before the fastening of the latter.
  • the filter 8 comprises a plurality of holes 18 to allow water to flow past the filter 8, in particular during the draining of the water from the tub 2.
  • the filter 8 comprises a partial semi-cylindrical shape, which is arched in direction of the draining circuit 16, i.e. in water flow direction.
  • an obstruction or blocking of the holes 18 by flat and plane foreign objects is avoided, as due to the curved or bent surface of the filter 8 inflexible or hard foreign objects like coins cannot lie tightly against a hole 18, i.e. against the arched surface of the filter 8. That means there is always a passage for water through the holes 18 maintained.
  • Fig. 3 shows a partial cross-sectional perspective view of a detail of the washing machine of Fig. 1 .
  • An inner surface 10 of the filter 8 comprises recessed portions 20a, 20b which extend across the holes 18 of the filter 8. Thereby an additional channel or passage is provided for water, when e.g. a coin abuts against one or several of the holes 18.
  • Fig. 4 shows a cross-sectional side view of a detail of the washing machine 1 of Fig. 1 .
  • the sump 14 is integrally formed with the first shell 4 of the tub 2 and the draining circuit 16 or at least a part thereof is integrally formed with the second shell 6 of the tub 2.
  • the filter 8 forms one side wall of the sump 14, wherein the inner surface 10 of the filter 8 faces the sump 14 and an outer surface 12 of the filter 8 faces the draining circuit 16.
  • a lower portion of the filter 8 preferably does not comprise holes 18 ( Fig. 1 ).
  • only an upper part of the filter 8 comprises holes 18 to let pass the water containing small dimensioned foreign objects like fluff from the sump 14 to the draining circuit 16.
  • the lower portion of the filter 8 is closed to provide a barrier and to trap and collect bigger objects like coins or screws etc.
  • the holes 18 preferably comprise smooth borders or rounded inner edges, such that the water flow through the holes 18 is improved and the deposit of fluff in the holes 18 is avoided.
  • a cleaning of the filter, in particular of the holes 18, is not necessary as the specific shape of the holes 18 provides that no foreign objects like fluff clogs the filter 8, i.e. a self-cleaning filter 8 is preferably provided.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP10168811A 2010-07-08 2010-07-08 Machine à laver Withdrawn EP2405050A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10168811A EP2405050A1 (fr) 2010-07-08 2010-07-08 Machine à laver
CN2011101903168A CN102312368A (zh) 2010-07-08 2011-07-08 洗衣机

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10168811A EP2405050A1 (fr) 2010-07-08 2010-07-08 Machine à laver

Publications (1)

Publication Number Publication Date
EP2405050A1 true EP2405050A1 (fr) 2012-01-11

Family

ID=43098889

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10168811A Withdrawn EP2405050A1 (fr) 2010-07-08 2010-07-08 Machine à laver

Country Status (2)

Country Link
EP (1) EP2405050A1 (fr)
CN (1) CN102312368A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2631346A1 (fr) * 2012-02-27 2013-08-28 Electrolux Home Products Corporation N.V. Unité de bac de lavage et machine à laver
EP2631343A1 (fr) * 2012-02-27 2013-08-28 Electrolux Home Products Corporation N.V. Unité de bac de lavage et machine à laver
EP2631345A1 (fr) * 2012-02-27 2013-08-28 Electrolux Home Products Corporation N.V. Unité de bac de lavage et machine à laver

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0110482A1 (fr) 1982-12-06 1984-06-13 Constructions Electro-Mecaniques D'amiens Machine à laver le linge à canalisation de vidange s'ouvrant en fond de cuve
EP0152745A2 (fr) * 1984-02-13 1985-08-28 INDUSTRIE ZANUSSI S.p.A. Cuve en matière plastique pour machine à laver le linge
EP0534381B1 (fr) 1991-09-27 1997-09-03 Whirlpool Europe B.V. Dispositif de vidange pour machines à laver ou similaires
EP1849904A1 (fr) 2006-04-27 2007-10-31 Electrolux Home Products Corporation N.V. Appareil d'accès au filtre de vidange à fermeture automatique pour une machine à laver à chargement par le haut
EP1849910A1 (fr) 2006-04-27 2007-10-31 Electrolux Home Products Corporation N.V. Appareil d'accès au filtre de vidange pour une machine à laver à chargement par le haut
EP1990462A2 (fr) * 2007-05-08 2008-11-12 Samsung Electronics Co., Ltd. Tube pour machine à laver à tambour et machine à laver à tambour en disposant

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101135102B (zh) * 2006-08-31 2011-04-27 海尔集团公司 一种暖风风扇横置并具有可拆卸过滤器的波轮洗衣机
JP4246762B2 (ja) * 2006-09-27 2009-04-02 パナソニック株式会社 ドラム式洗濯乾燥機

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0110482A1 (fr) 1982-12-06 1984-06-13 Constructions Electro-Mecaniques D'amiens Machine à laver le linge à canalisation de vidange s'ouvrant en fond de cuve
EP0152745A2 (fr) * 1984-02-13 1985-08-28 INDUSTRIE ZANUSSI S.p.A. Cuve en matière plastique pour machine à laver le linge
EP0534381B1 (fr) 1991-09-27 1997-09-03 Whirlpool Europe B.V. Dispositif de vidange pour machines à laver ou similaires
EP1849904A1 (fr) 2006-04-27 2007-10-31 Electrolux Home Products Corporation N.V. Appareil d'accès au filtre de vidange à fermeture automatique pour une machine à laver à chargement par le haut
EP1849910A1 (fr) 2006-04-27 2007-10-31 Electrolux Home Products Corporation N.V. Appareil d'accès au filtre de vidange pour une machine à laver à chargement par le haut
EP1849910B1 (fr) 2006-04-27 2008-10-22 Electrolux Home Products Corporation N.V. Machine à laver à chargement par le haut avec appareil d'accès au filtre de vidange
EP1990462A2 (fr) * 2007-05-08 2008-11-12 Samsung Electronics Co., Ltd. Tube pour machine à laver à tambour et machine à laver à tambour en disposant

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2631346A1 (fr) * 2012-02-27 2013-08-28 Electrolux Home Products Corporation N.V. Unité de bac de lavage et machine à laver
EP2631343A1 (fr) * 2012-02-27 2013-08-28 Electrolux Home Products Corporation N.V. Unité de bac de lavage et machine à laver
EP2631345A1 (fr) * 2012-02-27 2013-08-28 Electrolux Home Products Corporation N.V. Unité de bac de lavage et machine à laver
WO2013127743A3 (fr) * 2012-02-27 2013-12-12 Electrolux Home Products Corporation N.V. Unité cuve de lavage et machine à laver
WO2013127739A3 (fr) * 2012-02-27 2014-08-28 Electrolux Home Products Corporation N.V. Unité cuve de lavage et machine à laver
CN104136678A (zh) * 2012-02-27 2014-11-05 伊莱克斯家用产品股份有限公司 洗涤桶单元以及洗衣机
CN104136678B (zh) * 2012-02-27 2017-12-26 伊莱克斯家用产品股份有限公司 洗涤桶单元以及洗衣机

Also Published As

Publication number Publication date
CN102312368A (zh) 2012-01-11

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