EP2107154A1 - Haushaltswäsche und/oder Trocknungsanwendung - Google Patents

Haushaltswäsche und/oder Trocknungsanwendung Download PDF

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Publication number
EP2107154A1
EP2107154A1 EP08154120A EP08154120A EP2107154A1 EP 2107154 A1 EP2107154 A1 EP 2107154A1 EP 08154120 A EP08154120 A EP 08154120A EP 08154120 A EP08154120 A EP 08154120A EP 2107154 A1 EP2107154 A1 EP 2107154A1
Authority
EP
European Patent Office
Prior art keywords
household appliance
liner
cylindrical
drum
laundry
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Withdrawn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
EP08154120A
Other languages
English (en)
French (fr)
Inventor
Massimo Sanita'
Flavio Noviello
Massimo Castiglione
Diego Del Ben
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 EP08154120A priority Critical patent/EP2107154A1/de
Priority to PCT/EP2009/002210 priority patent/WO2009121515A1/en
Publication of EP2107154A1 publication Critical patent/EP2107154A1/de
Withdrawn legal-status Critical Current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
    • D06F58/00—Domestic laundry dryers
    • D06F58/02—Domestic laundry dryers having dryer drums rotating about a horizontal axis
    • D06F58/04—Details 
    • 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 household laundry washing and/or drying appliance.
  • the present invention relates to a rotary-drum home laundry drier, to which the following description refers purely by way of example.
  • rotary-drum laundry driers usually comprise a substantially parallelepiped-shaped outer box casing; a cylindrical bell-shaped drum for housing the laundry to be dried, and which is housed in axially rotating manner inside the casing to rotate about a horizontal longitudinal axis, and directly facing a laundry loading and unloading opening formed in the front face of the casing; a door hinged to the front face of the casing to rotate to and from a rest position closing the opening in the front face of the casing to seal the casing and the bell-shaped drum; and an electric motor for rotating the laundry drum about its longitudinal axis inside the casing.
  • Rotary-drum laundry driers of the above type also comprise a closed-circuit, hot-air generator designed to circulate inside the bell-shaped drum a stream of hot air with a low moisture content, and which flows through the bell-shaped drum and over the laundry inside the drum to rapidly dry the laundry.
  • the acoustic frequencies of the noise produced by metal parts in the laundry striking the cylindrical wall of the drum are normally amplified by the casing, which acts as a resonator, with all the drawbacks this entails.
  • a household appliance as claimed in Claim 1 and preferably, though not necessarily, in any one of the Claims depending directly or indirectly on Claim 1.
  • Number 1 in the attached drawing indicates as a whole a household laundry washing and/or drying appliance comprising a preferably, though not necessarily, parallelepiped-shaped outer box casing 2; a preferably, though not necessarily, cylindrical bell-shaped revolving drum 3 for housing the laundry to be washed and/or dried, and which is housed in axially rotating manner inside casing 2, directly facing a laundry loading and unloading opening 2a formed in the front face of casing 2; and a door 4 hinged to the front face of casing 2 to rotate to and from a rest position closing opening 2a in the front face to seal casing 2 and drum 3.
  • household appliance 1 is a home laundry drier, and revolving drum 3 rests horizontally inside casing 2 on a number of horizontal supporting rollers (not shown) fitted to casing 2 to allow drum 3 to rotate freely about its longitudinal axis L.
  • Laundry drier 1 also comprises an electric motor assembly (not shown) or similar, which, on command, rotates drum 3 about longitudinal axis L inside casing 2; and a closed-circuit, hot-air generator (not shown) housed inside casing 2 and designed to circulate inside drum 3 a stream of hot air with a low humidity content, and which flows over, to rapidly dry, the laundry inside the drum.
  • an electric motor assembly not shown
  • a closed-circuit, hot-air generator housed inside casing 2 and designed to circulate inside drum 3 a stream of hot air with a low humidity content, and which flows over, to rapidly dry, the laundry inside the drum.
  • revolving drum 3 of laundry drier 1 comprises a substantially cylindrical bell-shaped outer supporting vessel 5 extending coaxially with longitudinal axis L of the drum, with its outer cylindrical surface 5a resting on the supporting rollers of drum 3; and a substantially cylindrical liner 6 made of plastic material and fixed firmly to the inner cylindrical wall of supporting vessel 5 to fully cover the inner cylindrical surface 5b of vessel 5.
  • vessel 5 is preferably, though not necessarily, made of metal (for example, stainless steel or zinc-coated iron), and has an end wall 5c at least partly perforated or at any rate permeable to air, to assist airflow into revolving drum 3; and liner 6 rests on the cylindrical wall of vessel 5, and comprises a cylindrical sleeve 7 of polypropylene mixed with calcium carbonate and other optional additives and/or pigments, and a protective film 8 of bi-oriented polypropylene lining the inner surface 7a of sleeve 7, i.e. the surface of sleeve 7 facing the center of revolving drum 3.
  • metal for example, stainless steel or zinc-coated iron
  • protective film 8 is made of bi-oriented polypropylene having an ultimate strength ranging between 100 N/mm 2 (Newton per square millimeter) and 170 N/mm 2 (Newton per square millimeter) according to ASTM International standard measuring method D 882-91.
  • the thickness of cylindrical sleeve 7 preferably, though not necessarily, ranges between 3 and 15 millimeters; and the thickness of protective film 8 is preferably, though not necessarily, less than 0.5 millimeters.
  • liner 6 is divided into a number of rigid, cylindrical-sector-shaped shells 6' having the shape of cylindrical sectors, and which are placed adjacent to one another inside vessel 5, with appropriate clearance between shells 6' to compensate thermal expansions, to fully cover the inner cylindrical surface 5b of vessel 5.
  • Each rigid shell 6' is secured firmly to the cylindrical wall of vessel 5 by a number of screws, rivets or other fastening means (not shown), and comprises a substantially rectangular sheet 7 of polypropylene mixed with calcium carbonate and other optional additives and/or pigments; and a protective film 8 of bi-oriented polypropylene lining the inner surface 7a of sheet 7, i.e. the surface of sheet 7 not facing the cylindrical wall of supporting vessel 5.
  • the thickness of cylindrical sheets 7 preferably, though not necessarily, ranges between 3 and 15 millimeters; and the thickness of protective films 8 is preferably, though not necessarily, less than 0,5 millimeters.
  • liner 6 preferably, though not necessarily, comprises a number of inner projecting ribs 6a projecting radially towards the centre of drum 3.
  • ribs 6a extend substantially parallel to longitudinal axis L of drum 3, and are equally spaced angularly along the whole circumference of liner 6.
  • revolving drum 3 has numerous advantages: the cylindrical sleeve 7 of polypropylene mixed with calcium carbonate - commonly known as “Eurocorboran” - is extremely cheap, rigid, and resistant to mechanical stress; and protective film 8 of bi-oriented polypropylene, though slightly dearer than “Eurocorboran", is highly scratch-resistant, and provides for a highly attractive, high-quality surface finish as demanded by users.
  • sleeve/sheet 7 and protective film 8 are made of the same basic plastic polymer (i.e. polypropylene) provides for perfect, permanent adhesion of the two plastic materials, thus enabling low-cost production of rigid shells 6'.
  • Liner 6 in fact, can be produced easily using in-molding or over-molding production processes: protective film 8 is placed inside the mold chamber, and Eurocorboran is injected over it.
  • Revolving drum 3 is therefore cheaper than traditional laundry drying drums made entirely of stainless steel.
  • cylindrical sleeve 7 greatly reduces the noise produced by metal parts in the laundry striking liner 6, thus greatly reducing the noise level of the appliance.
  • household appliance 1 may comprise a preferably, though not necessarily, cylindrical bell-shaped, air- or watertight tub fixed substantially horizontally inside casing 2, directly facing the laundry loading and unloading opening 2a, and revolving drum 3 is housed in axially rotating manner inside the air- or watertight tub.
  • liner 6 may be made of other polypropylene-based plastic materials.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
EP08154120A 2008-04-04 2008-04-04 Haushaltswäsche und/oder Trocknungsanwendung Withdrawn EP2107154A1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP08154120A EP2107154A1 (de) 2008-04-04 2008-04-04 Haushaltswäsche und/oder Trocknungsanwendung
PCT/EP2009/002210 WO2009121515A1 (en) 2008-04-04 2009-03-26 Household laundry washing and/or drying appliance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08154120A EP2107154A1 (de) 2008-04-04 2008-04-04 Haushaltswäsche und/oder Trocknungsanwendung

Publications (1)

Publication Number Publication Date
EP2107154A1 true EP2107154A1 (de) 2009-10-07

Family

ID=39811430

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08154120A Withdrawn EP2107154A1 (de) 2008-04-04 2008-04-04 Haushaltswäsche und/oder Trocknungsanwendung

Country Status (2)

Country Link
EP (1) EP2107154A1 (de)
WO (1) WO2009121515A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012204560A1 (de) * 2012-03-22 2013-09-26 BSH Bosch und Siemens Hausgeräte GmbH Wäschetrommel mit einem Strukturmuster sowie Wäschebehandlungsmaschine mit solcher Wäschetrommel
EP3260594A1 (de) * 2016-06-20 2017-12-27 Electrolux Appliances Aktiebolag Bauteil für haushaltsgerät hergestellt aus recycletem polyolefin

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1541741A2 (de) * 2003-12-09 2005-06-15 Lg Electronics Inc. Wäschetrockner
EP1666657A1 (de) * 2004-12-01 2006-06-07 Electrolux Home Products Corporation N.V. Geräuscharmer Haushaltstrockner

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1541741A2 (de) * 2003-12-09 2005-06-15 Lg Electronics Inc. Wäschetrockner
EP1666657A1 (de) * 2004-12-01 2006-06-07 Electrolux Home Products Corporation N.V. Geräuscharmer Haushaltstrockner

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012204560A1 (de) * 2012-03-22 2013-09-26 BSH Bosch und Siemens Hausgeräte GmbH Wäschetrommel mit einem Strukturmuster sowie Wäschebehandlungsmaschine mit solcher Wäschetrommel
EP3260594A1 (de) * 2016-06-20 2017-12-27 Electrolux Appliances Aktiebolag Bauteil für haushaltsgerät hergestellt aus recycletem polyolefin
WO2017220531A1 (en) * 2016-06-20 2017-12-28 Electrolux Appliances Aktiebolag Recycled polyolefin component for household appliances
US10920054B2 (en) 2016-06-20 2021-02-16 Electrolux Appliances Aktiebolag Recycled polyolefin component for household appliances

Also Published As

Publication number Publication date
WO2009121515A1 (en) 2009-10-08

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