EP2112261B1 - Machine à laver les vêtements de type domestique avec cuve de lavage améliorée - Google Patents

Machine à laver les vêtements de type domestique avec cuve de lavage améliorée Download PDF

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Publication number
EP2112261B1
EP2112261B1 EP20090155091 EP09155091A EP2112261B1 EP 2112261 B1 EP2112261 B1 EP 2112261B1 EP 20090155091 EP20090155091 EP 20090155091 EP 09155091 A EP09155091 A EP 09155091A EP 2112261 B1 EP2112261 B1 EP 2112261B1
Authority
EP
European Patent Office
Prior art keywords
tub
stator
drum
washing machine
washing 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.)
Ceased
Application number
EP20090155091
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German (de)
English (en)
Other versions
EP2112261A1 (fr
Inventor
Daniele Cossalter
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.)
Nidec Sole Motor Corp SRL
Original Assignee
Nidec Sole Motor Corp SRL
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 Nidec Sole Motor Corp SRL filed Critical Nidec Sole Motor Corp SRL
Publication of EP2112261A1 publication Critical patent/EP2112261A1/fr
Application granted granted Critical
Publication of EP2112261B1 publication Critical patent/EP2112261B1/fr
Ceased 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
    • D06F37/206—Mounting of motor

Definitions

  • the present invention refers to an improved kind of clothes washing machine of the front-loading type, which is provided with a washing tub, a rotating drum housed within said washing tub, and a rotary drive shaft connecting said drum to a drive motor provided outside said tub, wherein said motor is of the kind involving a configuration that is generally referred to as "direct-drive" configuration in the art, whereby the rotor is directly press-fitted or shrink-fitted onto said rotary drive shaft of the drum, and therefore co-axially thereto, while the stator is associated to and firmly joined with the same washing tub.
  • the present invention relates to the manner in which such motor is embodied and arranged.
  • washing tubs require them to be completely re-designed.
  • all related production means and tools such as dies, jigs, templates, and the like, as needed for manufacturing said washing tubs mounting such "direct-drive” motors, must be renovated accordingly.
  • the clothes washing machine comprises a perforated rotating drum (not shown) for holding and handling the clothes to be washed, a washing tub 3 mounted in a suspended or oscillating manner in the outer casing of said washing machine and accommodating said drum, which is therefore housed rotatably inside said tub, a synchronous motor comprising a stator 6 and a rotor, arranged coaxially with the axis of rotation X of said drum and mounted externally to said tub on the rear side thereof, wherein said rotor is shrink-fitted on to the rotary drive shaft of said drum in a manner and with means as generally known in the art.
  • the counterpoise ballast 9 mounted to said washing tub is so shaped, formed and assembled onto the tub as to be able to comply with the following two basic requirements, i.e.:
  • the counterpoise ballast 9 is constructed and mounted against the rear wall 5 of the washing tub in such manner as to be able to not only perform its actual duty of constituting a means for balancing and damping the oscillations of the washing tub, but also to perform as a mechanical interface means between said washing tub and said stator 6, so that the same washing tub will not require any radical modification, which - as repeatedly noted hereinbefore - is the actual purpose and advantage of the present invention.
  • each counterpoise ballast shall be defined and selected based on both the shape and the size of the stator, as well as on the actual configuration of the coupling means, such as holes, undercuts, and the like, that are provided on said tub for them to be able to then engage corresponding means on said counterpoise ballast 9.
  • the present invention as described above does further allow for a number of advantageous improvements.
  • a pulley 10 on the outer end portion of the rotary drive shaft there is provided - coaxially thereto - a pulley 10; preferably, such pulley is of the kind that is usually associated to said rotary drive shaft when the related clothes washing machine does not make use of a direct-drive motor configuration, but is rather based on the use of a drive motor of a conventional type, in which the whole motor is situated on an outer side of the tub, and is connected to said pulley 10 via a driving belt of a kind as generally known in the art.
  • this pulley 10 On the outer side of this pulley 10, on the cylindrical surface 11 thereof, which would otherwise be engaged by the driving belt, there is mounted a ring of a ferromagnetic material 14, onto which there is applied a plurality of permanent magnets 12, as this can most clearly be seen in the above-cited Figures 4A and 4B .
  • These permanent magnets 12 are distributed along and firmly joined with said cylindrical surface 11 in an orderly, regular manner, and preferably in contact with each other, so as to form the magnetic portion of the rotor of a permanent-magnet motor of a kind as generally known in the art.
  • the circumstance of having the outer cylindrical, continuous surface of the pulley as a support surface for the permanent magnets allows for said permanent magnets to be applied and arranged there according to a desired, optimum distribution pattern, which in other words means that they may be even distributed along such support surface as spaced from each other by any given separation interval.
  • stator is constructed by applying individual stator coils 13 solely along a single arc "a" - lying coaxially to said rotary drive shaft - of the full circumference.
  • each one of said stator coils 13 is firmly joined to said counterpoise ballast 9 independently using means and methods as generally known in the art.
  • such stator coils are energized, i.e. power-supplied by a control unit of the machine (not shown), which delivers appropriate signals to and controls each single one of said coils in a synchronized manner depending on both
  • a further advantage of the above solution lies in the fact that the simplified construction of said counterpoise ballast 9 allows for the number of stator coils to be easily increased, this being a circumstance that significantly promotes a great flexibility in the performance abilities and, as a result, in the production of clothes washing machines made in accordance with the present invention.
  • the axis of rotation X of the drum is slightly inclined by an angle "i" upwards so as to enable the user to more conveniently gain access to the loading opening of the drum.
  • the rear portion 19 of the washing tub turns out as being of course inclined downwards, when viewed according to a fore-to-rear orientation thereof.
  • the lower portion 20 of the washing tub comes to lie in a re-entrant position relative to the position of the higher portion 21 thereof, which practically means that said higher or upper portion 21 behaves as a sloping canopy, i.e. overhang over said lower portion 20.
  • This free lower volume may therefore be used to an advantage for said stator 6 to be accommodated there, so that the rearward bulk of said stator, i.e. the space taken by it rearwards, does not extend beyond a vertical plane V passing through the upper edge 23 of the rear wall of the tub and extending parallel to the rear wall 24 of the outer casing of the machine, as this is symbolically represented in Figure 8 .
  • said stator does not require any additional space to be available at the rear of said tub for it to be accommodated, thereby enabling the depth size of the same tub to be increased without any other design condition or feature having to be altered or modified, or, as an alternative thereto, the outer case of the machine can itself be made correspondingly slimmer in the same direction, thereby favouring an overall reduction in the size and space requirements of the machine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Cleaning By Liquid Or Steam (AREA)

Claims (2)

  1. Machine à laver le linge à usage domestique de type à chargement frontal, comprenant :
    - un tambour rotatif perforé,
    - une cuve de lavage (3) montée dans l'enveloppe externe de ladite machine à laver et accueillant à l'intérieur ledit tambour rotatif,
    - moteur synchrone à aimant permanent comprenant un stator(6) et un rotor disposés de manière coaxiale avec l'axe de rotation (X) dudit tambour et montés à l'extérieur de ladite cuve sur la face arrière de celui-ci, ledit rotor étant emmanché serré sur l'arbre de transmission rotatif dudit tambour, et
    - un contrepoids (9) monté de manière fixe sur la façade extérieur arrière (5) de ladite cuve de lavage (3) caractérisé en ce que,
    - ledit stator (6) est plaqué sur une face latérale dudit contrepoids (9),
    - ledit rotor comprend une poulie (10) emmanchée serrée sur l'extrémité extérieure dudit arbre de transmission rotatif, ladite poulie (10) comprenant sur la face extérieure un anneau de métal ferromagnétique (14) avec une pluralité d'aimants permanents (12) appliqués sur ledit anneau (14),
    - ledit stator (6) comprend une pluralité de bobines (13) disposées selon et réparties le long d'un arc (a) de circonférence (c), l'arc restant de ladite circonférence étant dépourvu de toute bobine de stator,
    - l'axe de rotation (X) dudit arbre de transmission rotatif étant légèrement incliné d'un angle (i) par rapport au plan horizontal,
    - et lesdites bobines de stator (13) sont disposées sur la portion arrière inférieure (20) de ladite cuve.
  2. Machine à laver le linge selon la revendication 1, caractérisé en ce que lesdites bobines de stators (13) sont réparties de sorte que l'espace qu'elles occupent ne s'étend pas au-delà d'un volume inférieur libre délimité par le plan vertical (V) passant à travers le bords supérieur arrière (23) de ladite cuve et s'étendant parallèlement à la face arrière (24) de l'enveloppe externe de la machine.
EP20090155091 2008-04-22 2009-03-13 Machine à laver les vêtements de type domestique avec cuve de lavage améliorée Ceased EP2112261B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITPN20080032 ITPN20080032A1 (it) 2008-04-22 2008-04-22 "lavabiancheria domestica con vasca perfezionata".

Publications (2)

Publication Number Publication Date
EP2112261A1 EP2112261A1 (fr) 2009-10-28
EP2112261B1 true EP2112261B1 (fr) 2012-11-07

Family

ID=40297169

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090155091 Ceased EP2112261B1 (fr) 2008-04-22 2009-03-13 Machine à laver les vêtements de type domestique avec cuve de lavage améliorée

Country Status (2)

Country Link
EP (1) EP2112261B1 (fr)
IT (1) ITPN20080032A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3927426B4 (de) 1989-08-19 2006-02-23 Ebm-Papst Mulfingen Gmbh & Co. Kg Antriebseinheit für eine Wäsche-Behandlungsmaschine
DE19922610A1 (de) 1999-05-17 2000-11-23 Bsh Bosch Siemens Hausgeraete Antriebsvorrichtung für eine Waschmaschine
DE19937229A1 (de) 1999-08-06 2001-02-08 Bsh Bosch Siemens Hausgeraete Antriebsvorrichtung für eine Waschmaschine
EP1602767B1 (fr) 2002-12-10 2008-05-07 LG Electronics Inc. Machine à laver à tambour
DE102004049549A1 (de) 2004-03-24 2005-10-13 Diehl Ako Stiftung & Co. Kg Motor als Direktantrieb und Verfahren zur Montage des Motors
KR100634802B1 (ko) 2004-07-20 2006-10-16 엘지전자 주식회사 드럼 세탁기
KR20060027678A (ko) * 2004-09-23 2006-03-28 삼성전자주식회사 세탁기
EP1795641A1 (fr) 2005-12-06 2007-06-13 Electrolux Home Products Corporation N.V. Machine à laver le linge à usage domestique avec moteur d'entrainement compact
EP1961855B1 (fr) * 2007-02-22 2012-08-08 Whirlpool Corporation Machine à laver avec système de fixation de poids d'équilibre

Also Published As

Publication number Publication date
EP2112261A1 (fr) 2009-10-28
ITPN20080032A1 (it) 2009-10-23

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