WO2012069648A1 - Appareil ménager, comprenant un dispositif d'amortissement des vibrations et dispositif d'amortissement des vibrations pour celui-ci - Google Patents

Appareil ménager, comprenant un dispositif d'amortissement des vibrations et dispositif d'amortissement des vibrations pour celui-ci Download PDF

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Publication number
WO2012069648A1
WO2012069648A1 PCT/EP2011/071067 EP2011071067W WO2012069648A1 WO 2012069648 A1 WO2012069648 A1 WO 2012069648A1 EP 2011071067 W EP2011071067 W EP 2011071067W WO 2012069648 A1 WO2012069648 A1 WO 2012069648A1
Authority
WO
WIPO (PCT)
Prior art keywords
tub
home appliance
pivot
housing
appliance according
Prior art date
Application number
PCT/EP2011/071067
Other languages
English (en)
Inventor
Ismael Gracia Bobed
Gerardo Martinez Perez
Eduardo Recio Ferrer
Original Assignee
BSH Bosch und Siemens Hausgeräte GmbH
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
Priority claimed from ES201031737A external-priority patent/ES2387205B1/es
Application filed by BSH Bosch und Siemens Hausgeräte GmbH filed Critical BSH Bosch und Siemens Hausgeräte GmbH
Priority to CN201180056729.5A priority Critical patent/CN103228834B/zh
Priority to EP11787909.8A priority patent/EP2643512B1/fr
Priority to RU2013126296/12A priority patent/RU2553039C2/ru
Publication of WO2012069648A1 publication Critical patent/WO2012069648A1/fr

Links

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
    • 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 invention relates to a home appliance, in particular a washing machine or a dryer, with a housing in which a laundry drum is rotatably mounted in a laundry tub, the laundry tub being coupled to the housing via at least one support element of a vibration damping device.
  • washing machines and dryers with a drum rotatably mounted in a tub comprise a vibration damping device, which couples the tub with the housing, thereby vibrations and noise caused by the rotation of the drum are damped.
  • the tub vibrations are absorbed by means of a piston-cylinder damper device with an axial friction damper.
  • JP-1 111-4280-A describes a washing machine with a damper, which is disposed onto the housing of the washing machine in a direction perpendicular with respect to the drum rotational axis.
  • WO-2007/013021-A1 describes a conventional home appliance with a piston-cylinder vibration damping device, which connects a laundry tub with the housing base of the home appliance.
  • the cylinder-piston vibration damping device is slideably mounted on the housing base, in such a way that a limited sliding motion of the piston-cylinder device is provided along the housing base.
  • a limited sliding motion of the piston-cylinder device is provided along the housing base.
  • the disadvantage of such vibration damping device is that it is relatively expensive.
  • An object of the present invention is to provide a home appliance with an easy to assemble and manufacture vibration damping device. Another object is to provide a vibration damping device cheaper than conventional ones. Another object is to provide a more compact home appliance, i.e. a home appliance with a greater ratio of volume of the tub to volume of the housing than that of conventional home appliances with cylinder-piston vibration damping devices.
  • the support element is articulated to the housing via a pivot lever.
  • the pivoting lever is articulated to the housing via a first pivot articulation about a first pivot axis fixed to the housing, particularly to a housing side.
  • a vibration damping device is easy to implement as far as technical issues of its components are concerned.
  • the assembly process is simplified, since a number of components of the first pivot articulation may be mounted on the housing in a previous step.
  • the coupling of the tub to the housing via the vibration damping device may be arranged easily as far as technical issues of the assembly process are concerned.
  • the reaction force that is transferred to the housing through the damping device of the invention can be significantly reduced as compared to that of conventional axial friction dampers, consequently bending and shearing stresses at the connection to the housing are reduced as well. This somewhat precludes the utilization of axial friction dampers coupled to the housing side. Furthermore, there is no need to provide long enough support elements in order to adequately dissipate friction energy from the friction dampers without failure in buckling or longitudinal bending as it is the case of axial friction dampers.
  • dimensions should be understood as determined at a position of the home appliance where the tub is unloaded and remains static relative to the housing during no operation of the home appliance.
  • relative terms such as vertical, horizontal, above, below, height, etc. should be understood as referred to the position in which the home appliance is to be disposed during operation.
  • the first pivot axis may be at a height above a housing base of the home appliance. In this way a space is released under the tub where other components can be allocated, such as a drawer which can be useful to store inside any items by the user. This enables to reduce the overall height of the home appliance and hence to provide a more compact home appliance.
  • the first pivot axis is on or above a horizontal plane vertically distanced 25 % of the tub diameter below from the lowest point of the tub.
  • the first pivot axis may be vertically distanced 15% of the tub diameter below from the lowest point of the tub. More particularly the first pivot axis may be vertically distanced 5 % of the tub diameter below from the lowest point of the tub.
  • the first pivot axis may be connected to the housing, particularly to the housing side, via a bracket element, so as to provide rigidity to the housing structure at the connection.
  • the bracket element may be a cross plate fixed to the corners of the housing side.
  • the bracket element is not contacting the housing in order to reduce vibrations being transferred to the housing. In this way the vibrations are better damped.
  • the bracket element may be a bearing pin which extends along the direction of the first pivot axis where the pivot lever is connected. This allows providing a more flexible bracket element.
  • the pivot lever may be articulated to the support element via a second pivot articulation about a second pivot axis movable with respect to the housing.
  • the support element may be articulated to the tub via a third articulation fixed to the tub.
  • the horizontal distance between the third pivot axis and the housing side is equal to or less than 25% of the tub diameter. Particularly said horizontal distance is equal to or less than 15% of the tub diameter. More particularly said horizontal distance is equal to or less than 5% of the tub diameter.
  • the third pivot axis may be on or above a horizontal plane passing through the first pivot axis.
  • the third pivot axis may be on or below a horizontal plane passing through the center of the tub.
  • a housing ceiling is vertically distanced equal to or less than 25 % of the tub diameter above from the highest point of the tub.
  • the housing ceiling may be vertically distanced equal to or less than 15% of the tub diameter above from the highest point of the tub. More particularly the housing ceiling may be vertically distanced equal to or less than 5% of the tub diameter above from the highest point of the tub.
  • the term "housing ceiling” may be defined as an upper plane of the home appliance where the tub springs are suspended from.
  • the pivot lever and/or the support element is articulated against a predetermined rotational friction torque.
  • at least one of the pivot articulations includes a rotational friction damper.
  • at least part of the translational energy caused by the vibrations can be converted into friction energy.
  • the support element and/or the pivot lever comprises an axial friction damper.
  • the first, second and/or third pivot articulation may comprise a bearing bushing, in which at least a bearing pin is rotatably connected, especially with a press-fit connection.
  • a bearing bushing in which at least a bearing pin is rotatably connected, especially with a press-fit connection.
  • the bearing pin of the first pivot articulation may be rotatably connected to the bearing bushing with a rotational friction torque resistance.
  • the bearing pin may be tubular shaped and be made of a thermal conductive material, especially of metal, so that the temperature can be dissipated quickly thereby allowing to extent the life of the friction layers.
  • the support element and/or the pivot lever are rigid components. The complexity of the vibration damping device can thus be further reduced. Furthermore, simple manufacturing components can be used. They may also be made of a rigid material having enough elasticity to withstand the friction at the articulations. Particularly, the support element and/or the pivot lever are made of plastic.
  • the support element length may be equal to or greater than the pivot lever length.
  • the tub may have projections that allow providing a more spaced first pivot articulation from the drum rotational axis in order to be able to make the support element length shorter. Thus, a rotational friction torque acting on the first articulation through the pivot lever can be reduced.
  • the support element or a force line of action of the support element is located at an effective lever arm distance from the first pivot articulation.
  • the effective lever arm distance is measured perpendicularly to the force line of action and may vary due to vibrations of the tub during operation.
  • said height and/or a pivot lever length and/or a support element length, and/or the effective lever arm distance may be selected so as to provide an improved damping effect, particularly at a resonance vibration frequency.
  • the pivot lever length and the support element length are measured between respective pivot axes.
  • the improved damping effect includes minimizing vibration amplitudes, minimizing vibration reaction force at the connection to the housing, etc. as it would be recognized by a person skilled in the art. in this sense, it has been observed that a variable friction coefficient depending on the stroke of the damping device can be achieved with the features of the invention.
  • the support element length is greater than twice a pivot lever length.
  • the support element length may be about two and a half times the pivot lever length.
  • the home appliance according to the invention comprises a vibration control system.
  • the vibration control system may comprise a goniometer sensor for obtaining the angle between the pivot lever and the support element during operation of the home appliance so as to allow determination of the position of the third pivot articulation and the tub with respect to the housing in a reliable and easy way. This enables for example to extra minimize vibration amplitudes and therefore allowing providing a more compact home appliance.
  • the vibration damping device may comprise at least one antitorque element connected to the pivot lever for preventing twisting of the pivot lever about its longitudinal axis and/or the turning about an axis perpendicular to the first pivot axis during operation, by contact reaction of the antitorque element against a reaction element fixed with respect to the first pivot axis.
  • the antitorque element may be configured as a silentbloc joint.
  • the antitorque element may be integrated in the pivot lever.
  • the reaction element may be constituted by the bearing pin. In a preferred embodiment, it may be provided at least one antitorque element on either side of the pivot iever. The incorporation of an antitorque element enables to reduce the number of vibration damping device down even to two.
  • the home appliance comprises at least two support elements with at least one support element disposed at either side of the tub with respect to a vertical central plane. This arrangement of the support elements allows a reliable vibration damping of the tub.
  • the home appliance drive motor may be of a BLDC type
  • the counterweights may be allocated on front and/or back sides of the tub
  • the control panel may be located at the appliance's door or at a side of the front panel upper part
  • the detergent dispenser may be placed also at the appliance's door or also compacted at the front panel upper part.
  • the door also may close directly the tub without any gasket between the front wall saving space in appliance depth.
  • Figure 1 is a perspective view of a washing machine with a washing machine door opened
  • Figure 2 is a sectional view of the washing machine in the plane AA of Figure 1 with a vibration damping device according to the invention
  • Figure 3 shows a sectional view of a support element and a pivot lever of the vibration damping device of Figure 2;
  • Figure 4 is a schematic representation of a support element and a pivot lever of the vibration damping device of Figure 2;
  • Figure 5 shows a perspective view of a support member and a pivoting lever of the vibration damping device of Figure 2;
  • Figure 6 shows a perspective view of a support member and a pivoting lever of the vibration damping device of Figure 2;
  • Figure 1 shows a washing machine 1 with a housing 3.
  • a washing machine door 7 for closing the load opening 9.
  • the door 7 is represented in an opened position, so that through the load opening 9 of the housing front it is visible a laundry drum 11 for moving laundry items (not shown).
  • FIG. 2 shows a drum 13 of the washing machine 1 along the sectional plane A-A.
  • the drum 1 1 is rotatably mounted in the tub about a drum rotational axis 15, driven by a drive motor 25. Power is transmitted via a transmission belt 27 which is functionally engaged to the back side of the tub 1 1 via a driven pulley 29.
  • the tub 13 is suspended via two springs 17 onto a housing ceiling 19 of the housing 3.
  • the tub 13 is coupled to the housing sides 35 via two rod shaped support elements 31 articulated to the housing side 35 via pivot levers 33.
  • the support elements 31 are arranged symmetrically one to each other with respect to a central vertical plane of the tub 13. More than one support element 31 may be disposed on at least one of the housing sides 35.
  • the springs 17, the support elements 31 , and the pivot levers 33 constitute a vibration damping device of the washing machine 1.
  • vibration damping device By means of the vibration damping device, vibrations of the tub 13 during operation of the drum 11 are absorbed and damped.
  • the pivot lever 33 is articulated to the housing side 35 via a first pivot articulation 37 about a first pivot axis 39 fixed with respect to the housing 3.
  • the pivot lever 33 is articulated to the support element 31 via a second pivot articulation 47 about a second pivot axis 49 movable with respect to the housing 3.
  • the support element 31 is articulated to the tub 13 via a third pivot articulation 51 fixed to the tub 13.
  • the support member length a may be less than, equal to or greater than the pivot lever length b.
  • Figure 3 shows a sectional view of one of the support elements 31 of Figure 2 with the pivot lever 33.
  • the first pivot articulation 37 has a bearing pin 43 fixed to a plate bracket element 45 fixedly coupled to the housing side 35 close to the pivot lever 33, which is fixedly connected to a bearing bushing 41 , which may be realized by plate cutting and bending of a plate bracket element 45.
  • the articulation of the pivot lever 33 to the housing side 35 is arranged like a crankshaft.
  • Figure 3 shows that the bearing pin 43 is mounted with a press-fit connection in the pivot lever 33.
  • a press-fit connection By means of a press-fit connection, it is achieved an improved friction through a friction layer 50, between the pivot lever 33 and the bearing pin 43.
  • Antitorque elements 53 are formed from extensions of the pivot lever 33 on either side of the pivot lever 33 along the longitudinal direction of the bearing pin 43.
  • the force line of action f of the support element 33 is spaced from the first pivot articulation 37 in an effective lever arm distance I.
  • the effective lever arm distance I is measured perpendicularly to the force line of action and may vary due to vibrations of the tub during operation.
  • the a support element length a may be many times larger than the pivot lever length b, by means of what a rotation torque at the first pivot articulation is reduced.
  • the effective lever arm distance I between the support element 31 and the first pivot articulation varies. Due to the increased friction in the first pivot articulation 37, a translational energy of the tub 13 is at least partially converted into friction energy. In this way, vibrations and noise during operation of the drum 11 can be further reduced.
  • Figure 5 shows the right support element 31 of Figure 4 with the pivot lever 33 in a perspective view.
  • the bearing bushing 41 of the first pivot articulation 37 is fixedly connected to the housing side 35 via a plate bracket element 45.
  • the pivot lever 33 is attached to a continuous tubular shaped bearing pin 43 fixed in rotation with respect to the pivot lever 33 and rotatably mounted to the bearing bushing 41 where friction layers 50 are arranged and heat is dissipated.
  • Figure 6 shows the right support element 31 of Figure 5 with the pivot lever 33 in a perspective view.
  • the bearing bushing 41 of the first pivot articulation 37 is fixedly connected to the housing via a cross plate bracket element 45 which is fixed at both edges of the housing side 35.
  • the bearing bushing 41 is obtained by cutting and folding the cross plate bracket element 45 in such a way that two hugs are formed.
  • the pivot lever is rotatably connected to the bearing bushing 41 via a continuous bearing pin 43 fixed with respect to the bearing bushing 41 in this case, the aforementioned friction layers are arranged in the pivot lever 33.

Landscapes

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

Abstract

L'invention concerne un appareil ménager, en particulier une machine à laver (1) ou un sèche-linge, avec un boîtier (3) dans lequel un tambour (11) est monté à rotation dans un bac (13), le bac (13) étant accouplé au boîtier (3) par le biais d'au moins un élément de support (31) d'un dispositif d'amortissement des vibrations (17, 31, 33). Selon l'invention, l'élément de support (31) est articulé au boîtier (3) par le biais d'un levier pivotant (33) qui est articulé au boîtier (3), en particulier à un côté du boîtier (35), par le biais d'une première articulation pivotante (37) autour d'un premier axe de pivotement (39) fixe par rapport au boîtier (3).
PCT/EP2011/071067 2010-11-26 2011-11-25 Appareil ménager, comprenant un dispositif d'amortissement des vibrations et dispositif d'amortissement des vibrations pour celui-ci WO2012069648A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN201180056729.5A CN103228834B (zh) 2010-11-26 2011-11-25 具有振动衰减装置的家用器具及其振动衰减装置
EP11787909.8A EP2643512B1 (fr) 2010-11-26 2011-11-25 Appareil ménager, comprenant un dispositif d'amortissement des vibrations
RU2013126296/12A RU2553039C2 (ru) 2010-11-26 2011-11-25 Бытовой прибор с устройством демпфирования вибраций и устройство демпфирования вибраций

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
ES201031737A ES2387205B1 (es) 2010-11-26 2010-11-26 Aparato doméstico, en especial, máquina lavadora o secadora
ESP201031737 2010-11-26
ES201130793 2011-05-17
ESP201130793 2011-05-17

Publications (1)

Publication Number Publication Date
WO2012069648A1 true WO2012069648A1 (fr) 2012-05-31

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ID=46145391

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/071067 WO2012069648A1 (fr) 2010-11-26 2011-11-25 Appareil ménager, comprenant un dispositif d'amortissement des vibrations et dispositif d'amortissement des vibrations pour celui-ci

Country Status (5)

Country Link
EP (1) EP2643512B1 (fr)
CN (1) CN103228834B (fr)
PL (1) PL2643512T3 (fr)
RU (1) RU2553039C2 (fr)
WO (1) WO2012069648A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016193835A1 (fr) * 2015-05-29 2016-12-08 BSH Hausgeräte GmbH Dispositif d'amortissement des vibrations
WO2016193834A1 (fr) * 2015-05-29 2016-12-08 BSH Hausgeräte GmbH Dispositif d'amortissement des vibrations
WO2017064655A1 (fr) * 2015-10-16 2017-04-20 Bitron S.P.A. Procédé de mesure et de commande d'un paramètre de fonctionnement d'une machine à laver

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101568905B1 (ko) * 2013-11-06 2015-11-12 동부대우전자 주식회사 드럼 세탁기
DE102015200546A1 (de) * 2015-01-15 2016-07-21 BSH Hausgeräte GmbH Haushaltsgerät zur Pflege von Wäschestücken mit einer spezifischen Anbindung eines Dämpfers an ein Gehäuse des Haushaltsgeräts
JP7442126B2 (ja) * 2019-12-10 2024-03-04 青島海爾洗衣机有限公司 ドラム式洗濯機

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1211555B (de) * 1961-09-08 1966-02-24 Constructa Werke G M B H Waschmaschine mit Schleudergang
DE1460968A1 (de) * 1964-07-01 1969-04-24 Hotchkiss Brandt Reibungsdaempfer fuer Waeschewaschmaschinen mit Waschtrommel
EP0531917A1 (fr) * 1991-09-12 1993-03-17 Whirlpool Europe B.V. Machine à laver, à laver et à secher ou machine similaire comportant des amortisseurs magnétiques
EP0535443A1 (fr) * 1991-10-02 1993-04-07 SUSPA COMPART Aktiengesellschaft Amortisseur à friction pour machines à laver
JPH11114280A (ja) 1997-10-16 1999-04-27 Sanyo Electric Co Ltd ドラム式洗濯機
WO2007013021A1 (fr) 2005-07-25 2007-02-01 Arcelik Anonim Sirketi Lave-linge/seche-linge

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4555755B2 (ja) * 2005-09-08 2010-10-06 パナソニック株式会社 ドラム式洗濯機
CN102652193B (zh) * 2009-12-10 2016-02-10 Bsh家用电器有限公司 家用电器，尤其是洗衣机或者干燥机

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1211555B (de) * 1961-09-08 1966-02-24 Constructa Werke G M B H Waschmaschine mit Schleudergang
DE1460968A1 (de) * 1964-07-01 1969-04-24 Hotchkiss Brandt Reibungsdaempfer fuer Waeschewaschmaschinen mit Waschtrommel
EP0531917A1 (fr) * 1991-09-12 1993-03-17 Whirlpool Europe B.V. Machine à laver, à laver et à secher ou machine similaire comportant des amortisseurs magnétiques
EP0535443A1 (fr) * 1991-10-02 1993-04-07 SUSPA COMPART Aktiengesellschaft Amortisseur à friction pour machines à laver
JPH11114280A (ja) 1997-10-16 1999-04-27 Sanyo Electric Co Ltd ドラム式洗濯機
WO2007013021A1 (fr) 2005-07-25 2007-02-01 Arcelik Anonim Sirketi Lave-linge/seche-linge

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016193835A1 (fr) * 2015-05-29 2016-12-08 BSH Hausgeräte GmbH Dispositif d'amortissement des vibrations
WO2016193834A1 (fr) * 2015-05-29 2016-12-08 BSH Hausgeräte GmbH Dispositif d'amortissement des vibrations
WO2017064655A1 (fr) * 2015-10-16 2017-04-20 Bitron S.P.A. Procédé de mesure et de commande d'un paramètre de fonctionnement d'une machine à laver

Also Published As

Publication number Publication date
EP2643512A1 (fr) 2013-10-02
PL2643512T3 (pl) 2017-03-31
CN103228834B (zh) 2016-08-10
EP2643512B1 (fr) 2016-09-07
CN103228834A (zh) 2013-07-31
RU2553039C2 (ru) 2015-06-10
RU2013126296A (ru) 2015-01-10

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