EP1882771B1 - Lave-linge avec un anneau d'équilibrage fluide - Google Patents

Lave-linge avec un anneau d'équilibrage fluide Download PDF

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Publication number
EP1882771B1
EP1882771B1 EP06117835.6A EP06117835A EP1882771B1 EP 1882771 B1 EP1882771 B1 EP 1882771B1 EP 06117835 A EP06117835 A EP 06117835A EP 1882771 B1 EP1882771 B1 EP 1882771B1
Authority
EP
European Patent Office
Prior art keywords
drum
balance ring
fluid balance
spider
laundry machine
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.)
Not-in-force
Application number
EP06117835.6A
Other languages
German (de)
English (en)
Other versions
EP1882771A1 (fr
Inventor
Stefano Galassi
Giovanni Colombera
Marco Giovagnoni
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 PL06117835T priority Critical patent/PL1882771T3/pl
Priority to EP06117835.6A priority patent/EP1882771B1/fr
Priority to PCT/EP2007/006588 priority patent/WO2008012076A1/fr
Publication of EP1882771A1 publication Critical patent/EP1882771A1/fr
Application granted granted Critical
Publication of EP1882771B1 publication Critical patent/EP1882771B1/fr
Not-in-force 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
    • D06F37/20—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations
    • D06F37/22—Mountings, e.g. resilient mountings, for the rotary receptacle, motor, tub or casing; Preventing or damping vibrations in machines with a receptacle rotating or oscillating about a horizontal axis

Definitions

  • the present invention relates to a laundry machine with a fluid balance ring.
  • the fluid balance ring according to the present invention may be used to particular advantage in a washing machine, to which the following description refers purely by way of example.
  • Washing machines are known to comprise a fluid balance ring fitted to the drum to correct unbalance of the drum. More specifically, in known solutions, the fluid balance ring is fitted to an open front surface of the drum facing the loading/unloading door, comprises at least one annular chamber filled partly with liquid (normally water or water with added salt), and provides for reducing unbalance at high speed, caused by off-centred items inside the drum.
  • liquid normally water or water with added salt
  • One example of such a situation is a bundle of towels located on one side of a rotating washing machine drum. When the drum rotates at high speed, the unbalance produced by the towels is counteracted by the fluid inside the balance ring.
  • EP 1 605 088 A2 discloses a washing machine with a liquid balance weight mounted at a surface portion of the back of a drum.
  • a hub shaped as a cartwheel is mounted there as well.
  • the hub is fixed to the drum by means of bolts located at the rim of the hub.
  • the balance weight is directly attached to the drum by means of bolts.
  • US 5,735,006 discloses a washing machine wherein a drum is connected to a pulley which is rotatably driven by a motor by means of a pulley belt.
  • the pulley is combined with a fluid ring working as a liquid balance weight.
  • the fluid ring includes a plurality of concentric annular chambers.
  • Number 1 in Figure 1 indicates as a whole a washing machine comprising a casing 2 resting on a floor 3 on a number of feet 4.
  • Casing 2 supports a revolving drum 5 (defining a wash tub) which rotates about a horizontal rotation axis 6 (in alternative embodiments not shown, rotation axis 6 may be tilted or vertical), and front access to which is closed by a door 7 hinged to casing 2.
  • drum 5 is supported on a rotary shaft 8, coaxial with rotation axis 6, with the interposition of a spider 9 connected rigidly to rotary shaft 8 and drum 5 to connect rotary shaft 8 and drum 5 mechanically.
  • a fluid balance ring 10 is fitted to drum 5, coaxially with rotation axis 6, to rotate about rotation axis 6 together with drum 5. More specifically, fluid balance ring 10 is fitted rigidly to spider 9, and is therefore located at the closed rear end of drum 5 opposite the open front end facing door 7.
  • spider 9 has a central hub fitted to rotary shaft 8; and three spokes 11, each of which is connected rigidly at the outer end to a portion of drum 5, e.g. by means of two screws (not shown) inserted through two holes formed through spoke 11 and screwed inside two threaded holes formed through drum 5.
  • spider 9 may comprise a different number of spokes 11 (e.g. 2, 4 or 5).
  • fluid balance ring 10 is connected to each spoke 11 of spider 9 by a connecting bracket 12 having at least one through hole 13, and by at least one screw 14 which is inserted through hole 13 in connecting bracket 12 and screwed inside a threaded hole 15 formed through spoke 11 of spider 9.
  • the fluid balance ring 10 could be connected in other ways to the spider 9.
  • fluid balance ring 10 has a number of annular chambers 16, each of which is hydraulically isolated from the other annular chambers 16, is coaxial with rotation axis 6, and is filled partly with a liquid 17 (normally water or water with added salt).
  • Fluid balance ring 10 preferably has a large number of annular chambers 16 (e.g. eleven, as shown in Figure 4 , or more generally at least nine) to reduce the noise produced by fluid balance ring 10 as it rotates.
  • spider 9 is precision manufactured and therefore precisely coaxial with rotation axis 6. Consequently, fluid balance ring 10 is also precisely coaxial with (of negligible eccentricity with respect to) rotation axis 6, which is indispensable for ensuring effective balance.
  • spider 9 bends very little in use, and so undergoes no noticeable deformation in the opposite direction to the eccentricity of the load in drum 5 (unlike drum 5, which is made of welded and/or riveted sheet metal), thus enabling fluid balance ring 10 to operate in the best possible conditions.
  • the efficiency of fluid balance ring 10 is impaired.
  • the highly rigid nature of spider 9, however, provides for eliminating or at least minimizing in-service deformation of fluid balance ring 10.
  • the above solution allows a highly efficient fluid balance ring 10 to be fitted to spider 9 with no misalignment at either the assembly stage (precision assembly) or in working conditions (superior balancing performance) when drum 5 bends under the effect of an unbalanced load.
  • washing machine 1 as described above is cheap and easy to produce, by involving only minor alterations to a known washing machine and no new component parts.
  • the above structure also applies to any other kind of laundry machine, such as a drier or a washer-drier.

Landscapes

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

Claims (4)

  1. Lave-linge (1) comprenant :
    un tambour (5) tournant autour d'un axe de rotation (6) ;
    un arbre rotatif (8) supportant le tambour (5) et coaxial avec l'axe de rotation (6) ;
    un croisillon (9) raccordé de manière rigide à l'arbre rotatif (8) et au tambour (5) afin de raccorder, sur le plan mécanique, l'arbre rotatif (8) et le tambour (5), le croisillon (9) comportant un certain nombre de branches (11), dont chacune est raccordée de manière rigide, au niveau d'une extrémité extérieure, à une partie du tambour (5) ; et
    un anneau d'équilibrage à fluide (10) adapté sur le tambour (5) et coaxial avec l'axe de rotation (6) ;
    l'anneau d'équilibrage à fluide (10) étant adapté de manière rigide sur chacune des branches (11) du croisillon (9) et comprenant un certain nombre de chambres annulaires (16), dont chacune est isolée sur le plan hydraulique vis-à-vis des autres chambres annulaires (16), est coaxiale avec l'axe de rotation (6), et est partiellement remplie d'un liquide (17).
  2. Lave-linge (1) selon la revendication 1, dans lequel l'anneau d'équilibrage à fluide (10) comporte un certain nombre de pattes de fixation (12), chacune comportant au moins un trou traversant (13) ; et un certain nombre de vis (14), chacune insérées à travers le trou traversant (13) dans une patte de fixation (12) respective et vissées à l'intérieur d'un trou taraudé (15) formé à travers une branche (11) respective du croisillon (9).
  3. Lave-linge (1) selon la revendication 1 ou 2, dans lequel l'anneau d'équilibrage à fluide (10) comporte au moins neuf chambres annulaires (16).
  4. Lave-linge (1) selon la revendication 3, dans lequel l'anneau d'équilibrage à fluide (10) comporte onze chambres annulaires (16).
EP06117835.6A 2006-07-25 2006-07-25 Lave-linge avec un anneau d'équilibrage fluide Not-in-force EP1882771B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PL06117835T PL1882771T3 (pl) 2006-07-25 2006-07-25 Urządzenie pralnicze z płynowym pierścieniem wyważającym
EP06117835.6A EP1882771B1 (fr) 2006-07-25 2006-07-25 Lave-linge avec un anneau d'équilibrage fluide
PCT/EP2007/006588 WO2008012076A1 (fr) 2006-07-25 2007-07-25 Machine de blanchisserie comprenant un anneau d'équilibrage des fluides

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06117835.6A EP1882771B1 (fr) 2006-07-25 2006-07-25 Lave-linge avec un anneau d'équilibrage fluide

Publications (2)

Publication Number Publication Date
EP1882771A1 EP1882771A1 (fr) 2008-01-30
EP1882771B1 true EP1882771B1 (fr) 2017-01-04

Family

ID=37564086

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06117835.6A Not-in-force EP1882771B1 (fr) 2006-07-25 2006-07-25 Lave-linge avec un anneau d'équilibrage fluide

Country Status (3)

Country Link
EP (1) EP1882771B1 (fr)
PL (1) PL1882771T3 (fr)
WO (1) WO2008012076A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013221288A1 (de) * 2013-10-21 2015-04-23 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Herstellen einer Anordnung für ein Haushaltsgerät, Anordnung und Haushaltsgerät zur Pflege von Wäschestücken
KR102160971B1 (ko) * 2013-11-05 2020-10-05 삼성전자주식회사 밸런서 및 이를 갖는 세탁기

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5735006A (en) 1996-06-05 1998-04-07 Maytag Corporation Washing machine pulley and fluid ring
DE29805563U1 (de) 1998-03-27 1999-08-05 AEG Hausgeräte GmbH, 90429 Nürnberg Horizontal gelagerte Waschtrommel für eine Waschmaschine
US6327732B1 (en) 2000-05-10 2001-12-11 Maytag Corporation Fluid balancing ring and method for using same
KR100587307B1 (ko) 2004-06-09 2006-06-08 엘지전자 주식회사 드럼세탁기 및 드럼세탁기의 드럼
KR100686017B1 (ko) 2005-05-11 2007-02-26 엘지전자 주식회사 세탁기

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
EP1882771A1 (fr) 2008-01-30
PL1882771T3 (pl) 2017-07-31
WO2008012076A1 (fr) 2008-01-31

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