EP2112261B1 - Haushaltswaschmaschine mit verbessertem Laugenbehälter - Google Patents

Haushaltswaschmaschine mit verbessertem Laugenbehälter 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.)
Expired - Fee Related
Application number
EP20090155091
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English (en)
French (fr)
Other versions
EP2112261A1 (de
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/de
Application granted granted Critical
Publication of EP2112261B1 publication Critical patent/EP2112261B1/de
Expired - Fee Related 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)
  • Cleaning By Liquid Or Steam (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)

Claims (2)

  1. Haushaltswaschmaschine vom Frontlader-Typ, die umfasst.
    - eine mit Löchern versehene Drehtrommel,
    - einen Laugenbehälter (3), der in dem äußeren Gehäuse der Waschmaschine angebracht ist und in dem die Drehtrommel aufgenommen ist,
    - einen Permanentsynchronmotor, der einen Stator (6) und einen Rotor umfasst, der koaxial zur Drehachse (X) der Trommel angeordnet und außerhalb des Laugenbehälters an dessen Rückseite angebracht ist, wobei der Rotor auf die Drehantriebswelle der Trommel aufgeschrumpft ist, und
    - einen Gegengewicht-Ballast (9), der fest an der hinteren Außenwand (5) des Laugenbehälters (3) angebracht ist, dadurch gekennzeichnet, dass:
    - der Stator (6) an einer Seitenfläche des Gegengewicht-Ballasts (9) angebracht ist,
    - der Rotor eine Riemenscheibe (10) umfasst, die auf den äußeren Endabschnitt der Drehantriebswelle aufgeschrumpft ist, wobei die Riemenscheibe (10) an der Außenseite einen Ring aus einem ferromagnetischen Material (14) umfasst und eine Vielzahl von Permanentmagneten (12) an dem Ring (14) angebracht sind,
    - der Stator (6) eine Vielzahl von Wicklungen (13) umfasst, die entsprechend einem Bogen (a) eines Umfangs (c) angeordnet und an ihm entlang verteilt sind, wobei der verbleibende Bogen des Umfangs frei von Stator-Wicklungen ist,
    - die Drehachse (X) der Drehantriebswelle um einen Winkel (i) geringfügig relativ zu einer horizontalen Ebene geneigt ist,
    - und die Stator-Wicklungen (13) an dem hinteren unteren Abschnitt (20) des Laugenbehälters angeordnet sind.
  2. Waschmaschine nach Anspruch 1, dadurch gekennzeichnet, dass die Stator-Wicklungen (13) so verteilt sind, dass sich der von ihnen eingenommene Raum nicht über ein freies unteres Volumen hinaus erstreckt, das durch die vertikale Ebene (V) begrenzt wird, die durch die hintere obere Kante (23) des Laugenbehälters hindurch verläuft und sich parallel zu der Rückwand (24) des äußeren Gehäuses der Maschine erstreckt.
EP20090155091 2008-04-22 2009-03-13 Haushaltswaschmaschine mit verbessertem Laugenbehälter Expired - Fee Related EP2112261B1 (de)

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 (de) 2009-10-28
EP2112261B1 true EP2112261B1 (de) 2012-11-07

Family

ID=40297169

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20090155091 Expired - Fee Related EP2112261B1 (de) 2008-04-22 2009-03-13 Haushaltswaschmaschine mit verbessertem Laugenbehälter

Country Status (2)

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

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
EP1607505A3 (de) 2002-12-10 2006-10-04 LG Electronics Inc. Trommelwaschmaschine
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 (de) 2005-12-06 2007-06-13 Electrolux Home Products Corporation N.V. Haushaltswaschmaschine mit kompaktem Antriebmotor
PL1961855T3 (pl) * 2007-02-22 2012-11-30 Whirlpool Co Pralka z systemem mocowania ciężaru przeciwwagi

Also Published As

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

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