US20020078718A1 - Laundry treatment machine - Google Patents

Laundry treatment machine Download PDF

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Publication number
US20020078718A1
US20020078718A1 US10/033,876 US3387601A US2002078718A1 US 20020078718 A1 US20020078718 A1 US 20020078718A1 US 3387601 A US3387601 A US 3387601A US 2002078718 A1 US2002078718 A1 US 2002078718A1
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US
United States
Prior art keywords
orifice
diaphragm
tub
emptying
housing
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.)
Abandoned
Application number
US10/033,876
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English (en)
Inventor
Horst Wiemer
Edwin Bolduan
Alexander Schlitzer
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of US20020078718A1 publication Critical patent/US20020078718A1/en
Abandoned legal-status Critical Current

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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
    • D06F37/26—Casings; Tubs
    • D06F37/266—Gaskets mounted between tub and casing around the loading opening
    • 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
    • D06F37/267—Tubs specially adapted for mounting thereto components or devices not provided for in preceding subgroups

Definitions

  • the invention relates to a laundry treatment machine, in particular, a washing machine with spin mode and a spin-drier.
  • Such a laundry treatment machine is disclosed in German Published, Non-Prosecuted Patent Application DE 37 38 388 A1
  • the machine has a concertina diaphragm with a loop-shaped fold and extends between a housing orifice and a tub orifice as a feed duct to a laundry drum disposed in the tub.
  • a fastening portion that forms a side wall of a diaphragm fold
  • one or more emptying orifices for emptying suds or lye out of the diaphragm fold are formed axially parallel to the diaphragm center axis.
  • Such a configuration is intended to allow an essentially complete drainage of the diaphragm into the tub.
  • European Patent EP 0 752 493 B1 discloses a front-loading washing machine with a concertina diaphragm, forming a feed duct for a laundry drum, between a housing orifice and a tub orifice.
  • the laundry drum casing is provided on its inner circumference with blades or the like that convey suds out of the laundry drum into the diaphragm.
  • a vertical return orifice In a bottom wall of the diaphragm fold is formed a vertical return orifice, to which is connected a suds return hose that extends away downward and the lower end of which is connected to the lower end of a sump that is connected at the lowest point of the tub through an outflow hose to a tub outflow orifice located above the sump.
  • a suds pump-away hose with a suds pump is connected to the outflow hose between the sump and the tub outflow orifice.
  • a seat for a lint filter is formed in the return orifice of the diaphragm. The lint filter is located higher than the suds level in the tub, so that suds thrown onto the lint filter by the laundry drum can, by gravity, flow through the filter and then through the sump back into the tub. During the washing operation, a constant recirculation of the suds through the lint filter thereby takes place, with the lint being filtered out.
  • Such a process is intended to prevent the situation where it is necessary, on the suction side of the suds pump of the pump-away line, to have a lint screen that, being in the lower region of the washing machine, is accessible only with difficulty for cleaning. Furthermore, another problem of prior art washing machines is to be solved thereby, the problem being that residual suds often remains in the pump-away circuit and, when the filter housing is opened, runs out of the washing machine onto the floor on which the washing machine is installed.
  • the invention deals with a subject not recognized in the prior art and also not solved by the prior art.
  • the rotation of the laundry drum gives rise, in the tub and in the diaphragm, to vibrations transversely to the axial rotation and, therefore, also transversely to the longitudinal axis of the diaphragm.
  • These vibrations are particularly pronounced (high frequencies, accelerations, and vibration amplitudes) at spinning rotational speeds for drying the laundry in the laundry drum.
  • some of the water trapped in the diaphragm is thrown out of the diaphragm into the laundry drum and, consequently, back on to the laundry in the laundry drum before it can flow out through the emptying orifice or outflow orifice formed in the diaphragm.
  • Such an effect is also referred to as the “fountain effect.”
  • a result of such rewetting is that the operation of drying the laundry lasts longer and, therefore, more energy is spent in the operation.
  • laundry treatment machine including a tub having a front tub orifice, a housing having a front housing orifice, a laundry drum having a drum orifice and a horizontal axis of rotation, the laundry drum rotatably disposed in the tub about the horizontal axis of rotation, and a diaphragm having a diaphragm bottom with a lowest point, the diaphragm connecting the housing orifice to the tub orifice and forming a feed duct to the drum orifice, the diaphragm having a substantially vertical emptying orifice in the diaphragm bottom at the lowest point between the tub orifice and the housing orifice, the emptying orifice being free of obstruction for liquid for emptying the diaphragm.
  • the diaphragm is a concertina diaphragm that has at least one outwardly curved diaphragm fold, and the emptying orifice is formed in the fold bottom in a bottom wall of the diaphragm fold.
  • an emptying line connected to the emptying orifice and extending away downward from the emptying orifice. Because the emptying line does not extend away transversely, but downward, a more rapid outflow of water from the emptying orifice is achieved in the vibration direction of the diaphragm.
  • the emptying line may have an outlet issuing into the tub below the drum orifice, an outlet issuing into the tub below the laundry drum, and/or an outlet issuing into an outflow line of the tub below the tub.
  • an essentially vertical discharge of the liquid takes place through the emptying orifice of the diaphragm.
  • the emptying orifice may be formed by a connection piece integrally molded onto the diaphragm or by a separate hose. Because, on one hand, the direction of force of the vibrating diaphragm on the liquid and, on the other hand, the connection-piece direction or hose direction are thereby essentially in the same sense, the liquid can quickly flow out completely under high acceleration at forces, without the water being thrown out of the diaphragm fold back onto the laundry in the laundry drum.
  • the washing machine having one of the group consisting of a spin mode and a spin-drier, the washing machine including a diaphragm having a diaphragm bottom with a lowest point, the diaphragm connecting the housing orifice to the tub orifice and forming a feed duct to the drum orifice.
  • the diaphragm has a substantially vertical emptying orifice in the diaphragm bottom at the lowest point between the tub orifice and the housing orifice, and the emptying orifice is free of obstruction for liquid for emptying the diaphragm.
  • a connector duct including a diaphragm having a diaphragm bottom with a lowest point, the diaphragm connecting the housing orifice to the tub orifice and forming a feed duct to the drum orifice, the diaphragm having a substantially vertical emptying orifice in the diaphragm bottom at the lowest point between the tub orifice and the housing orifice, the emptying orifice being free of obstruction for liquid for emptying the diaphragm.
  • a connector duct for the laundry treatment machine including a diaphragm having a diaphragm bottom with a lowest point, the diaphragm connecting the housing orifice to the tub orifice and forming a feed duct to the drum orifice, the diaphragm having a substantially vertical emptying orifice in the diaphragm bottom at the lowest point between the tub orifice and the housing orifice, the emptying orifice being free of obstruction for liquid for emptying the diaphragm.
  • FIG. 1 is a fragmentary, partially perspective and partially En cross-sectional view of a detail of a front-loading laundry treatment machine according to the invention
  • FIG. 2 is an alternative embodiment of the machine of FIG. 1;
  • FIG. 3 is another embodiment of the machine of FIG. 1.
  • FIG. 1 there is shown a front-loading laundry treatment machine without, but, preferably, with, a spin mode.
  • the machine could also be a spin-drier.
  • the machine contains a preferably concertina-like diaphragm 2 that connects a front housing orifice 4 of a housing 6 to a front tub orifice 8 of a tub 10 and that forms a feed duct 12 to a drum orifice 14 of a laundry drum 16 that is rotatably disposed in the tub 10 about a horizontal axis of rotation.
  • An essentially vertical emptying orifice 22 free of obstruction for liquid (suds, water and the like), for emptying the diaphragm 2 is formed in the diaphragm 2 in the diaphragm bottom 20 at the lowest point between the tub orifice 8 and the housing orifice 4 .
  • the diaphragm 2 is preferably a concertina diaphragm having at least one diaphragm fold 24 having a Z-shape or S-shape in an axial cross-section.
  • the emptying orifice 22 is formed in the fold bottom in a bottom wall 20 of the diaphragm fold 24 .
  • the emptying orifice 22 may be formed by the upper end of an emptying hose or by an emptying connection piece 26 integrally molded or connected to the bottom wall 20 or in another way.
  • the figures illustrate an emptying line 28 that extends away from the emptying orifice 22 downward and the upper end portion of which is formed by the emptying connection piece 26 .
  • connection piece 26 extend essentially vertically downward on the upper end portion of at least 5 cm, their direction deviating from the vertical by preferably no more than 30°.
  • the lower end portion of the emptying line 28 has a first outlet 30 that issues below the laundry drum 16 , but above an outflow orifice 32 , into the tub 10 , at the lowest point of which the outflow orifice 32 is formed. Furthermore, the emptying line 28 has, at its lowest end, a second outlet 34 that is connected to a suds outflow line 36 connected to the outflow orifice 32 and that issues into the suds outflow line 36 .
  • the diaphragm 2 has a fastening portion 38 that is connected to the tub orifice 8 and from which extends upward a fold wall 40 , the upper end portion of which projects into the drum orifice 14 and that delimits the fold interior 42 relative to the tub orifice 8 .
  • Additional horizontal emptying orifices 44 adjacent to the bottom wall 20 may be formed in the fold wall 40 .
  • the additional emptying orifices 44 connect the fold interior 42 horizontally to the tub orifice 8 to discharge liquid out of the fold interior 42 through the tub orifice 8 into the tub 16 below the drum orifice 14 .
  • These orifices, designated here as additional emptying orifices 44 are disclosed in the prior art. They are not absolutely necessary in addition to the emptying orifices 22 formed essentially vertically in the fold bottom 20 , but may assist drainage from the diaphragm fold 24 .
  • FIGS. 2 , and 3 are identical to the embodiment of FIG. 1 with the exception of the features described in the following paragraphs and like reference numerals correspond to like features.
  • the emptying line 28 has only the outlet 34 at its lower end.
  • the outlet 34 issues into the suds outflow line 36 .
  • the emptying line 28 has at its lower end only the outlet 30 that issues into the tub 10 below the laundry drum 16 , but above the outflow orifice 32 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
US10/033,876 2000-12-27 2001-12-27 Laundry treatment machine Abandoned US20020078718A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10065342.1 2000-12-27
DE10065342A DE10065342A1 (de) 2000-12-27 2000-12-27 Wäschebehandlungsmaschine

Publications (1)

Publication Number Publication Date
US20020078718A1 true US20020078718A1 (en) 2002-06-27

Family

ID=7669220

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/033,876 Abandoned US20020078718A1 (en) 2000-12-27 2001-12-27 Laundry treatment machine

Country Status (3)

Country Link
US (1) US20020078718A1 (de)
EP (1) EP1219742A3 (de)
DE (1) DE10065342A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100251487A1 (en) * 2007-11-28 2010-10-07 BSH Bosch und Siemens Hausgeräte GmbH Method and device for determining the optimal rotational speed of a drum of a laundry treatment device

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007022041B3 (de) * 2007-05-08 2008-07-24 Miele & Cie. Kg Frontbeschickbare Wäschebehandlungsmaschine, Dichtungsmanschette sowie Verfahren zur Befestigung einer Dichtungsmanschette
KR101480448B1 (ko) * 2007-09-13 2015-01-08 엘지전자 주식회사 드럼세탁기
US8109121B2 (en) 2007-09-13 2012-02-07 Lg Electronics Inc. Drum type washing machine with gasket drain
DE102008054463A1 (de) * 2008-12-10 2010-06-17 BSH Bosch und Siemens Hausgeräte GmbH Hausgerät zur Pflege von Wäschestücken, mit einer Trommel und einer Manschette
WO2016107640A1 (en) * 2014-12-30 2016-07-07 Arcelik Anonim Sirketi Bellows water discharge system for a laundry washing machine
CN212800899U (zh) * 2020-04-30 2021-03-26 博西华电器（江苏）有限公司 滚筒洗衣机

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7106732A (de) * 1970-05-22 1971-11-24
DE3738388C2 (de) * 1987-11-12 1996-12-19 Bauknecht Hausgeraete Manschette für eine Waschmaschine
IT1276479B1 (it) * 1995-07-06 1997-10-31 Merloni Elettrodomestici Spa Macchina lavabiancheria con mezzi di filtraggio del liquido di lavaggio

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100251487A1 (en) * 2007-11-28 2010-10-07 BSH Bosch und Siemens Hausgeräte GmbH Method and device for determining the optimal rotational speed of a drum of a laundry treatment device
US8726440B2 (en) * 2007-11-28 2014-05-20 Bsh Bosch Und Siemens Hausgeraete Gmbh Method and device for determining the optimal rotational speed of a drum of a laundry treatment device

Also Published As

Publication number Publication date
EP1219742A2 (de) 2002-07-03
DE10065342A1 (de) 2002-07-04
EP1219742A3 (de) 2003-07-02

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