EP3874082B1 - Waschmaschine/trockner mit stossdämpfer - Google Patents

Waschmaschine/trockner mit stossdämpfer Download PDF

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Publication number
EP3874082B1
EP3874082B1 EP19779826.7A EP19779826A EP3874082B1 EP 3874082 B1 EP3874082 B1 EP 3874082B1 EP 19779826 A EP19779826 A EP 19779826A EP 3874082 B1 EP3874082 B1 EP 3874082B1
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EP
European Patent Office
Prior art keywords
magnet group
piston
washer
dryer
casing
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.)
Active
Application number
EP19779826.7A
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English (en)
French (fr)
Other versions
EP3874082A1 (de
Inventor
Yunus Emre AYDOGDU
Mert GOLDELI
Daghan GUNHAN
Ali MENSUR
Kenan Yüce SANLITURK
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.)
Arcelik AS
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Arcelik AS
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Publication date
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Publication of EP3874082A1 publication Critical patent/EP3874082A1/de
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    • 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
    • D06F25/00—Washing machines with receptacles, e.g. perforated, having a rotary movement, e.g. oscillatory movement, the receptacle serving both for washing and for centrifugally separating water from the laundry and having further drying means, e.g. using hot air 

Definitions

  • the present invention relates to a washer/dryer comprising at least one shock absorber which absorbs the vibrational movements of the tub.
  • the drum wherein the laundry is loaded rotates inside a tub and the tub makes oscillation and vibrational movements depending on the amount of laundry loaded and the rotational speed.
  • the base of the tub is connected to the base of the washer/dryer via shock absorbers.
  • the shock absorbers absorb the vibrations of the tub and prevent the same from being transmitted to the body, thus serving as an energy transfer member which delivers the vibrations to the body.
  • the tub and the drive group vibrate at maximum amplitude at the resonance region. Almost the entire kinetic energy of the drive group and the tub is transferred to the body, which causes noises disturbing the user.
  • the shock absorbers absorb said high-amplitude vibrations and prevent the tub from hitting the body.
  • the vibration amplitude decreases, and if a single acting shock absorber is used, the shock absorber, of which the friction force is adjusted according to high-amplitude vibrations, generally transfers the low-amplitude vibrations to the body without absorbing the same.
  • Single acting dry friction shock absorbers provide the same effect at all vibration amplitudes, in other words in all the displacements of the shock absorber cylinder with respect to the piston.
  • the shock absorbers used in the washer/dryers are elements which convert the mechanical energy to thermal energy and are used in a passive/active/semi-active manner in order to control the vibration amplitudes.
  • the characteristics of the shock absorber and selecting the proper one significantly affect the performance, vibration and noise, and the efficiency of the washer/dryer.
  • an household appliance comprising a damper wherein at least two elements are connected to each other and at least two sensors control the positions thereof, thus adjusting the forces thereof.
  • a washing machine comprising a damper of which the friction characteristic changes depending on the density of the fluid which is affected by the magnetic field.
  • a washer-dryer is disclosed, comprising a damper damping the vibrational motion of the tub, having a cylinder whose one end is connected to the tub, and a piston whose one end is connected to the base, linearly moving in the cylinder.
  • Another state of the art embodiment is disclosed in the European Patent Application No. EP1455011 .
  • damper comprises a composite damping means for generating a damping force by an electromagnetic force when a displacement of a relative movement of the cylinder and the rod is less than a preset length.
  • the aim of the present invention is the realization of a washer/dryer comprising a shock absorber which absorbs the vibrations of the tub and which convert sudden changes in force to smooth transition.
  • the washer/dryer according to independent claim 1 is realized in order to attain the aim of the present invention and comprises a body, a tub, which is disposed into the body; a drum which is disposed in the tub, which rotates around its own axis and wherein the laundry is placed; at least one shock absorber which is fixed to the tub from one end and to the body from the other end, the shock absorber having a cylinder, a piston which moves linearly in the cylinder, a casing which is coaxial with the cylinder and the piston and which at least partially surrounds both the cylinder and the piston, at least one friction element which is positioned between the cylinder and the piston so as to completely enclose the piston, a retainer which prevents the friction element from being detached from the piston, the shock absorber having a first magnet group which is positioned in the casing so as to at least partially surround the retainer, whereby the first magnet group is positioned on the retainer holding the friction element so as to completely enclose the retainer and hence the friction element, a second magnet group
  • the friction element While the piston moves inside the cylinder, the friction element, the retainer and the first magnet group thereon also move.
  • the second and third magnet groups magnetically repel the first magnet group and create a second absorption effect. As the distance between the second and third magnet groups and the first magnet group decreases, the repelling force increases.
  • the shock absorber force is increased depending on the increasing displacement in the resonance frequencies of the washer/dryer, thus approaching the viscous damping characteristic. Consequently, the maximum drive group displacements at the vibration amplitudes at the start step are decreased.
  • the "soft start" type shock absorber used in the washer/dryer gains the properties of a shock absorber which operates according to the dry friction principle and which provides viscous damping effect, and the effect provided by a spring in the state of the art is obtained by means of magnets and a simple shock absorber production is mechanically realized without providing a semi-active/active system control.
  • the first, second and third magnet groups are neodymium.
  • the first, second and third magnet groups are ring-shaped magnets.
  • a simple shock absorber is realized wherein the absorption characteristic in varying displacements can be changed without using an additional control mechanism.
  • the dry friction shock absorber gains stiffness based on the magnetic field thanks to the magnetic effect.
  • the washer/dryer (1) comprises a body; a tub (3) which is disposed into the body; a drum (2) which is disposed in the tub (3), which rotates around its own axis and wherein the laundry is placed; and at least one shock absorber (6) which is fixed to the tub (3) from one end and to the body from the other end, the shock absorber (6) having a cylinder (4), a piston (5) which moves linearly in the piston (4), a casing (7) which is coaxial with the cylinder (4) and the piston (5) and which at least partially surrounds both elements, at least one friction element (8) which is positioned between the cylinder (4) and the piston (5) so as to completely enclose the piston (5), a retainer (9) which prevents the friction element (8) from being detached from the piston (5), a first magnet group (10) which is positioned in the casing (7) so as to at least partially surround the retainer (9), and a second and third magnet groups (11 and 12) which bear against the two opposite sides of the casing (7) at
  • first magnet group (10) is positioned on the retainer (9) holding the friction element (8) so as to completely enclose the retainer (9) and hence the friction element (8)
  • other magnets which are the second and third magnet groups (11 and 12) are positioned in the casing (7) concentrically with the piston (5) and parallel to the first magnet group (10), which is placed onto the friction element (8) and the retainer (9), so as to bear against the two opposite short edges of the casing (7) and so as to be distanced from the first magnet group (10).
  • the piston (5) moves inside the cylinder (4), the friction element (8) and the retainer (9) also move.
  • the second and third magnet groups (11 and 12) repel the first magnet group (10) and create a second absorption effect. As the distance between the second and third magnet groups (11 and 12) and the first magnet group (10) decreases, the repelling force increases.
  • the sudden force changes of a shock absorber (6) are converted to smooth transition changes.
  • the shock absorber (6) structure which is closest to the ideal absorption characteristic, is obtained without any step transition.
  • the shock absorbers (6) with absorption characteristics adjusted according to the parameters of the washer/dryer (1) are used.
  • a "soft start" type shock absorber (6) is mechanically obtained with low cost and labor without any active control.
  • the number, type, size and in-between distance of the magnet groups (10, 11 and 12) allow the adjustment of the friction force of the shock absorber (6).
  • the same friction characteristic is provided in various positions of the piston (5) without being affected by the load status of the washer/dryer (1).
  • the friction element (8) is produced from elastomeric material in the form of a ring which peripherally contacts the piston (5).
  • the friction element (8) is felt.
  • the first, second and third magnet groups (10, 11 and 12) are neodymium.
  • the first, second and third magnet groups (10, 11 and 12) are ring-shaped magnets.
  • first, second and third magnet groups (10, 11 and 12) are coaxially positioned in the casing (7).
  • the sides of the second and third magnet groups (11 and 12) facing the first magnet group (10) have the same pole.
  • the casing (7) comprises a cover (13) and a body (14).
  • the cover (13) and the body (14) are fitted over each other by means of a toothed locking mechanism (15).
  • a toothed locking mechanism 15
  • the force of the shock absorber (6) is reduced at high rpms, which in turn reduces the forces transmitted to the body via the shock absorber (6) especially in the spin-drying step, and thus the body is enabled to be affected less by the vibrations of the tub (3), decreasing the noise level at the spin-drying step.
  • the washer/dryer (1) is prevented from moving.
  • the gap between the tub (3) and the body can be decreased while the volume of the tub (3) and the drum (2) can be increased.

Landscapes

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

Claims (6)

  1. Eine Waschmaschine / ein Trockner (1) umfasst einen Körper; eine Wanne (3), die im Körper angeordnet ist; eine Trommel (2), die in der Wanne (3) angeordnet ist, sich um die eigene Achse dreht und in der die Wäsche abgelegt wird; und mindestens einen Stoßdämpfer (6), der von einem Ende an der Wanne (3) und vom anderen Ende an der Karosserie befestigt ist, wobei der Stoßdämpfer (6) einen Zylinder (4), einen Kolben (5), der sich linear im Zylinder (4) bewegt, aufweist, ein Gehäuse (7), das koaxial zum Zylinder (4) und zum Kolben (5) ist und sowohl den Zylinder (4) als auch den Kolben (5) zumindest teilweise umgibt, mindestens ein Reibelement (8), das zwischen dem Zylinder (4) und dem Kolben (5) so positioniert ist, dass es den Kolben (5) vollständig umschließt, eine Halterung (9), die verhindert, dass sich das Reibelement (8) vom Kolben (5) löst, wobei der Stoßdämpfer (6) eine erste Magnetgruppe (10) aufweist, die im Gehäuse (7) so positioniert ist, dass sie die Halterung (9) zumindest teilweise umgibt, gekennzeichnet ist sie / er dadurch, dass die erste Magnetgruppe (10) auf der Halterung (9), der das Reibungselement (8) hält, so positioniert ist, dass sie die Halterung (9) und damit das Reibungselement (8) vollständig umschließt, eine zweite Magnetgruppe (11) und eine dritte Magnetgruppe (12), wobei die der ersten Magnetgruppe (10) zugewandten Seiten der zweiten Magnetgruppe (11) und der dritten Magnetgruppe (12) denselben Pol haben, so dass, wenn die erste Magnetgruppe (10) in die Nähe der zweiten Magnetgruppe (11) oder der dritten Magnetgruppe (12) kommt, die gleichen Pole sich gegenseitig abstoßen, und wobei die zweite Magnetgruppe (11) und die dritte Magnetgruppe (12) in dem Gehäuse (7) konzentrisch mit dem Kolben (5) positioniert sind und gegen die beiden gegenüberliegenden Seiten des Gehäuses (7) an beiden Seiten der Halterung (9) parallel zu der ersten Magnetgruppe (10) anliegen, um gegen die beiden gegenüberliegenden kurzen Kanten des Gehäuses (7) anzuliegen und um von der ersten Magnetgruppe (10) beabstandet zu sein.
  2. Eine Waschmaschine / ein Trockner (1), wie in Anspruch 1 aufgeführt, ist dadurch gekennzeichnet, dass das Reibelement (8) aus Elastomermaterial in Form eines Ringes hergestellt ist, der den Kolben (5) peripher berührt.
  3. Eine Waschmaschine / ein Trockner (1), wie in Anspruch 2 aufgeführt, ist dadurch gekennzeichnet, dass das Reibelement (8) spürbar ist.
  4. Eine Waschmaschine / ein Trockner (1), wie in Anspruch 1 aufgeführt, ist dadurch gekennzeichnet, dass die erste Magnetgruppe (10), die zweite Magnetgruppe (11) und die dritte Magnetgruppe (12) aus Neodym bestehen.
  5. Eine Waschmaschine / ein Trockner (1), wie in Anspruch 1 aufgeführt, ist dadurch gekennzeichnet, dass die erste Magnetgruppe (10), die zweite Magnetgruppe (11) und die dritte Magnetgruppe (12) ringförmige Magnete sind.
  6. Eine Waschmaschine / ein Trockner (1), wie in Anspruch 1 aufgeführt, ist dadurch gekennzeichnet, dass das Gehäuse (7) einen Deckel (13) und einen Körper (14) umfasst, die mittels eines Gewindeverriegelungsmechanismus (15) übereinander angebracht werden.
EP19779826.7A 2018-11-02 2019-09-26 Waschmaschine/trockner mit stossdämpfer Active EP3874082B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201816440 2018-11-02
PCT/EP2019/075967 WO2020088856A1 (en) 2018-11-02 2019-09-26 A washer/dryer comprising a shock absorber

Publications (2)

Publication Number Publication Date
EP3874082A1 EP3874082A1 (de) 2021-09-08
EP3874082B1 true EP3874082B1 (de) 2023-11-08

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EP19779826.7A Active EP3874082B1 (de) 2018-11-02 2019-09-26 Waschmaschine/trockner mit stossdämpfer

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WO (1) WO2020088856A1 (de)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003144792A (ja) * 2001-11-13 2003-05-20 Hitachi Ltd ドラム式洗濯機
DE602004000615T2 (de) * 2003-03-06 2006-09-07 Lg Electronics Inc. Kombinationsdämpfer und Waschmaschine mit demselben
EP1477604A3 (de) * 2003-05-13 2006-09-13 Lg Electronics Inc. Dämpfer für Waschmaschine
KR100565659B1 (ko) 2004-02-23 2006-03-30 엘지전자 주식회사 세탁기의 댐퍼 및 그 제어방법
KR100548309B1 (ko) 2004-07-13 2006-02-02 엘지전자 주식회사 자기력을 이용한 댐퍼 및 이를 구비한 세탁기
ITTO20050623A1 (it) 2005-09-14 2007-03-15 Indesit Co Spa Elettrodomestico per il trattamento di capi tessili con sensore di spostamento
KR20130010798A (ko) 2011-07-19 2013-01-29 엘지전자 주식회사 세탁기용 댐퍼 및 이를 이용한 세탁기
TR201619654A2 (tr) * 2016-12-27 2018-07-23 Arcelik As Kuru sürtünmeli̇ amorti̇sör i̇çeren çamaşir yikayici-kurutucu

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EP3874082A1 (de) 2021-09-08
WO2020088856A1 (en) 2020-05-07

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