EP2207928A1 - Lave-linge comprenant un joint d'étanchéité - Google Patents

Lave-linge comprenant un joint d'étanchéité

Info

Publication number
EP2207928A1
EP2207928A1 EP08805162A EP08805162A EP2207928A1 EP 2207928 A1 EP2207928 A1 EP 2207928A1 EP 08805162 A EP08805162 A EP 08805162A EP 08805162 A EP08805162 A EP 08805162A EP 2207928 A1 EP2207928 A1 EP 2207928A1
Authority
EP
European Patent Office
Prior art keywords
tub
drum
opening
washing machine
collar
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.)
Withdrawn
Application number
EP08805162A
Other languages
German (de)
English (en)
Inventor
Uwe Ackermann
Serkan Koru
Turhan Mutlu
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete 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
Application filed by BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Publication of EP2207928A1 publication Critical patent/EP2207928A1/fr
Withdrawn legal-status Critical Current

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
    • D06F37/26—Casings; Tubs
    • D06F37/266—Gaskets mounted between tub and casing around the loading opening

Definitions

  • the present invention relates to a washing machine comprising a housing having a front panel in which a front opening is formed for loading and retrieving laundry, the housing is forming exterior of the washing machine, a tub, disposed behind the front panel, secured within the housing, having a tub opening for communicating with the front opening, a drum rotatably disposed within the tub on a rotation axis, having a drum opening substantially aligned with the tub opening, being connected with a motor defining a rotation direction, and a gap enabling drum rotation while the motor is rotating the drum formed between the tub entrance and drum entrance, and a ring-shaped gasket forming a substantially waterproof seal between the front panel and the tub and including a front rim engaging the front opening, a rear rim engaging the tub opening, and a collar having a first end adjacent the rear rim and projecting radially inwardly beyond the gap to a second end.
  • a drum type washing machine - that may be embodied in a washing/drying machine as well - includes a cabinet forming an exterior of the washing machine and has a forward opening, formed in a front panel of the cabinet for loading and retrieving laundry via a door.
  • a tub fixedly installed within the cabinet has an entrance for communicating with the forward opening of the front panel.
  • a drum rotatably installed within the tub and provided with a multitude of perforations for water to pass from the tub to the interior of the drum and back, has a cylindrical shape with an entrance at its front end to communicate with the tub entrance.
  • a gasket having an essentially annular shape is provided between the cabinet and the tub for preventing water leakage while the door is closed.
  • the gasket includes a front rim coupled to the front panel of the cabinet and a rear rim coupled to the entrance of the tub, to thereby close the gap between cabinet and tub.
  • the rear rim generally includes a uniformly shaped collar projecting radially inwardly to fill the gap between the tub and the drum to resist and block passage or sticking of the laundry between the tub and the drum.
  • It is an aspect of the present invention to provide a washing machine comprising; a housing having a front panel in which a front opening is formed for loading and retrieving laundry, the housing is forming exterior of the washing machine; a tub, disposed behind the front panel, secured within the housing, having a tub opening for communicating with the forward opening; a drum rotatably disposed within the tub on a rotation axis, having a drum opening substantially aligned with the tub opening, being connected with a motor defining a rotation direction, and a gap, enabling drum rotation while the motor is rotating the drum, formed between the tub entrance and drum entrance.
  • a ring-shaped gasket forms a substantially waterproof seal between the front panel and the tub, and the tub includes a front rim engaging the front opening and a rear rim engaging the tub opening.
  • a collar has a first end adjacent the rear rim and projects radially inwardly beyond the gap to a second end. A collar thickness between the first end and the second end is non-uniform around the gasket.
  • the collar has first and second arcuate sections along the ring-shaped gasket, the collar thickness in the first section is greater and the collar thickness in the second section.
  • the first section is disposed at least partially below the rotation axis and the second section is disposed at least partially above the rotation axis.
  • the first section is disposed at least partially above the rotation axis and the second section is disposed at least partially below the rotation axis.
  • the first section has a first section length and the second section has a second section length, and wherein the second section length is greater than the first section length.
  • the inventive washing machine further includes a shock absorber, disposed between the front rim and rear rim and having an elongated bent shape between the front rim and the rear rim to attenuate vibration from the tub to the housing.
  • the said collar keeps the laundry from the gap while the motor is in operation.
  • the second section is disposed at least partly following the second section in a clockwise direction starting from a bottom of the collar.
  • the collar of the inventive washing machine further comprises a substantially circular perimeter, having a center eccentric to the rotation axis when the motor is inactive and formed by adjacent inner peripherals of the first section and the second section.
  • the circular perimeter has a substantially concentric center with the rotation axis, while the motor is in operation.
  • the collar has a first end adjacent the rear rim and projecting radially inwardly beyond the gap to a second end, wherein a collar distance from the first end to the second end is non-uniform around the gasket.
  • both the collar distance and the collar thickness, between the first end and the second end are non-uniform.
  • FIG. 1 a illustrates a perspective view of a washing machine having a gasket in accordance with an embodiment of the invention
  • Fig. 1 b illustrates a front view of an embodiment of the gasket used in a washing machine
  • Fig. 2a is a cross-sectional view of the gasket depicted in Fig. 1 b taken along the line AA;
  • Fig. 2b is a cross-sectional view of the gasket depicted in Fig. 1 b taken along the line BB;
  • Fig. 2c is a cross-sectional view of the gasket depicted in Fig. 1 b taken along the line CC;
  • Fig. 2d is a cross-sectional view of the gasket depicted in Fig. 1 b taken along the line DD;
  • Fig. 2e is a cross-sectional view of the gasket depicted in Fig. 1 b taken along the line EE;
  • Fig. 2f is a cross-sectional view of the gasket depicted in Fig. 1 b taken along the line FF;
  • Fig. 3 is an enlarged side view of a portion of gasket and showing drum positions while rotating;
  • Fig. 4 is an enlarged side view of a portion of gasket showing the axial and radial changes on the cross-section of a gasket.
  • Fig. 5 is a complete length graphic of the washing machine at each clock position of the drum rotating at 1200 or 800 rpm;
  • a drum type washing machine comprises; a housing 10 forming an exterior of the washing machine and having a circular forward opening 14, formed in a front panel 12 of the housing 10, for loading and retrieving laundry via a door 16.
  • a motor 50 such as an induction or BLDC motor for rotating the drum 30 and including rotational shaft centrally coupled to the rear of the drum 30, is installed behind the tub 20 and rotates the drum 30 forward and reversely according to the motor's rotational direction.
  • At least one lifter 32 is provided to an inner wall of the drum 30 to assist the washing action by repeatedly lifting the laundry to a predetermined height as the drum 30 is rotated and then allowing the lifted laundry to fall from the predetermined height.
  • the tub 20 is supported by a suspension means 60, including springs, dampers etc., disposed above and below the tub 20.
  • a drum-type washing machine as described above is provided with a gasket 40 as shown in FIG. 1 b.
  • the gasket 40 has a ring shape, is provided between the housing 10 and the tub 20 installed behind the front panel 12, essentially connecting the tub opening 26 to the front opening 14.
  • the gasket 40 includes a front rim 42 having u-shaped cross section which is bent outwardly to couple the front opening 14.
  • the gasket 40 further includes a rear rim 48 coupled to the tub opening 26 by means of a groove 47 which is formed at rear rim 48.
  • a hollow shock absorber 44 having S-shaped cross-section is disposed between the front rim 42 and the rear rim 48.
  • a collar 46 on the rear rim 48 is radially inwardly extending beyond a gap 22 between the tub opening 26 and drum opening 36 which are essentially aligned. Collar 46 thickness differs around the gasket 40.
  • the motor 50 provides rotational movement on the drum 30 wherein a laundry load and lifters 32 force the drum 30 to present an imbalance due to a dynamic bending moment; consequently, a vibration occurs. Vibration causes radial and axial movement of the drum 30 within the tub 20. The amplitude of movement is bound to different parameters of the washing machine such as cycle time, speed or weight of the laundry. Under certain circumstances axial movement causes the drum 30 to hit some portions of the collar 46 which is stationary between the tub 20 and drum 30. In order to define such a problem a test has been conducted to define axial distance of a drum 30 in predetermined positions and rotational speed parameters.
  • Various collar 46 thicknesses are provided on the rear rim 48 to prevent at the one hand drum 30 friction with the collar 46 and at the other hand to increase gap 22 distances.
  • Figures 1 b, 2a, 2b, 2c, 2d and 2e show cross-sections of the same gasket 40 wherein the collar 46 thicknesses vary as shown in Table 1 below.
  • Test results related to total length of the drum 30 and tub 20 at 1200rpm and 800rpm are shown in Table 2 below. It can be derived that total difference between maximum and minimum lengths at predetermined clock positions on drum 30 is equal to axial distances of the drum 30 movement with respect to the housing 10 which are 1 ,69mm and 1 ,79mm respectively.
  • Fig. 3 shows an enlarged view of upper parts of the gasket 40 and drum 30 during the operation of the washing machine at two different rotational speeds which are 800 rpm and 1200 rpm. Due to the vibration and other effective forces, complex movement of the drum 30 causes a first axial distance x1 relative to the stationary gasket 40. In case of the 1200 rpm rotational speed of the drum 30 or lesser laundry weight for the same washing machine, a second axial distance x2 which cause bigger gap 22 between the drum 30 and the gasket 40 occurs.
  • axial difference L of the cross-section of the gasket 40 which is calculated by an equation of a fixed gap 22 length and total length of the drum 30, first x1 or second axial distance x2 and the tub 20.
  • collar 46 length including axial difference L value provides the predefined gap 22 between the collar 46 and the drum 30 having first axial distance x1.
  • the gap 22 length is defined not only to prevent friction but also to obstruct laundry.
  • a radial difference R varying on cross-sections at each clock positions of the gasket 40 provides the gap 22 between the collar 46 and peripheral of the tub opening 26 wherein a first axial distance y1 at 800 rpm or a second radial distance at 1200 rpm occurs.
  • Radial difference R provides predefined gap length at first y1 and second radial distances y2 and also overall positions of the drum 30.

Landscapes

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

Abstract

L'invention concerne un lave-linge comprenant un logement doté d'un panneau frontal dans lequel une ouverture frontale est formée pour charger et retirer du linge, le logement formant l'extérieur du lave-linge ; une cuve disposée derrière le panneau frontal, fixée à l'intérieur du logement, dotée d'une ouverture de cuve permettant de communiquer avec l'ouverture frontale ; un tambour disposé de manière à pouvoir tourner dans la cuve sur un axe de rotation, doté d'une ouverture de tambour sensiblement alignée sur l'ouverture de la cuve, relié par un moteur définissant un sens de rotation ; un espace permettant la rotation du tambour tandis que le moteur fait tourner le tambour, formé entre l'entrée de la cuve et l'entrée du tambour ; et un joint d'étanchéité annulaire formant un joint sensiblement étanche entre le panneau frontal et la cuve et comprenant un bord frontal en contact avec l'ouverture frontale, un bord arrière en contact avec l'ouverture de la cuve et un collier, dont une première extrémité est adjacente au bord arrière, se projetant radialement vers l'intérieur au-delà de l'espace vers une seconde extrémité. Une épaisseur de collier, ou en variante une distance de collier, entre la première extrémité et la seconde extrémité est irrégulière autour du joint d'étanchéité.
EP08805162A 2007-10-18 2008-10-09 Lave-linge comprenant un joint d'étanchéité Withdrawn EP2207928A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR2007/07121A TR200707121A2 (tr) 2007-10-18 2007-10-18 Conta ve bu contaya sahip tamburlu çamaşır makinesi
PCT/EP2008/063509 WO2009050095A1 (fr) 2007-10-18 2008-10-09 Lave-linge comprenant un joint d'étanchéité

Publications (1)

Publication Number Publication Date
EP2207928A1 true EP2207928A1 (fr) 2010-07-21

Family

ID=40336577

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08805162A Withdrawn EP2207928A1 (fr) 2007-10-18 2008-10-09 Lave-linge comprenant un joint d'étanchéité

Country Status (6)

Country Link
US (1) US20100206014A1 (fr)
EP (1) EP2207928A1 (fr)
CN (1) CN101827971A (fr)
EA (1) EA201070469A1 (fr)
TR (1) TR200707121A2 (fr)
WO (1) WO2009050095A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20100080415A (ko) 2008-12-30 2010-07-08 엘지전자 주식회사 세탁장치
KR20100129117A (ko) 2009-05-28 2010-12-08 엘지전자 주식회사 세탁장치
US9828715B2 (en) 2009-05-28 2017-11-28 Lg Electronics Inc. Laundry maching having a drying function
KR20100129161A (ko) 2009-05-28 2010-12-08 엘지전자 주식회사 세탁장치
KR101692726B1 (ko) 2009-05-28 2017-01-04 엘지전자 주식회사 세탁장치
KR101689604B1 (ko) * 2009-05-28 2017-01-09 엘지전자 주식회사 세탁장치
CN104565375B (zh) * 2013-10-15 2018-08-21 博西华电器（江苏）有限公司 滚筒洗衣机的密封圈以及具有该密封圈的滚筒洗衣机
CN105821627B (zh) * 2016-06-03 2017-09-22 康红宾 滚筒洗衣机用观察窗垫
DE102019209205A1 (de) * 2019-06-26 2020-12-31 BSH Hausgeräte GmbH Manschette für ein Wäschebehandlungsgerät, Wäschebehandlungsgerät und Verfahren zum Einstellen eines Spaltmaßes

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1426076A (en) * 1973-01-29 1976-02-25 Hotpoint Ltd Washing and like machines
DE3738388C2 (de) * 1987-11-12 1996-12-19 Bauknecht Hausgeraete Manschette für eine Waschmaschine
GB2287475A (en) * 1994-03-15 1995-09-20 Hoover Ltd Washing machine tub gasket
KR101016306B1 (ko) * 2004-02-13 2011-02-22 엘지전자 주식회사 드럼 세탁기의 개스킷
ES2276625B1 (es) * 2005-12-02 2008-04-16 Bsh Electrodomesticos España, S.A. Junta para lavadora y lavadora con dicha junta.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009050095A1 *

Also Published As

Publication number Publication date
US20100206014A1 (en) 2010-08-19
EA201070469A1 (ru) 2010-10-29
CN101827971A (zh) 2010-09-08
WO2009050095A1 (fr) 2009-04-23
TR200707121A2 (tr) 2009-06-22

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