EP2273003B1 - Waschmaschine mit einer Vorrichtung zum Vermeiden von Schaumaustritt - Google Patents

Waschmaschine mit einer Vorrichtung zum Vermeiden von Schaumaustritt Download PDF

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Publication number
EP2273003B1
EP2273003B1 EP09008961A EP09008961A EP2273003B1 EP 2273003 B1 EP2273003 B1 EP 2273003B1 EP 09008961 A EP09008961 A EP 09008961A EP 09008961 A EP09008961 A EP 09008961A EP 2273003 B1 EP2273003 B1 EP 2273003B1
Authority
EP
European Patent Office
Prior art keywords
drum
washing machine
inlet opening
suds container
machine according
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.)
Not-in-force
Application number
EP09008961A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2273003A1 (de
Inventor
Benedikt Fechtel
Rainer Bicker
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.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
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 Miele und Cie KG filed Critical Miele und Cie KG
Priority to PL09008961T priority Critical patent/PL2273003T3/pl
Priority to ES09008961T priority patent/ES2367639T3/es
Priority to AT09008961T priority patent/ATE521749T1/de
Priority to EP09008961A priority patent/EP2273003B1/de
Publication of EP2273003A1 publication Critical patent/EP2273003A1/de
Application granted granted Critical
Publication of EP2273003B1 publication Critical patent/EP2273003B1/de
Not-in-force 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • 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
    • 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
    • D06F37/42—Safety arrangements, e.g. for stopping rotation of the receptacle upon opening of the casing door

Definitions

  • the invention relates to a washing machine with a housing arranged in a tub in which a drum is rotatably mounted, and wherein in the wall of the tub at least one inlet opening for the washing liquid is provided, wherein at the inlet opening a water inlet pipe is arranged, which via a hose with connected to a Ein Albanykasten for detergent addition, and off NO-A-2008/012341 known.
  • the invention thus raises the problem of developing a washing machine in such a way that in the case of foaming during washing or spinning as possible no foam escapes to the outside.
  • the inlet opening is arranged with the water inlet nozzle in the shell-side wall of the tub closer to the shell of the drum, as the wall portions surrounding the drum of the tub.
  • the tub is formed with respect to its shape such that a storage space is provided in the region of the inlet opening for the resulting during washing or spinning or resulting foam. Due to this design is achieved in an advantageous manner that forms an overpressure area as storage space for the foam due to the spin cycle, which merges into a narrowed space due to the smaller distance to the drum, being seen behind the inlet nozzle, in the direction of rotation of the drum , forms a negative pressure area.
  • the foam or here Due to the resulting pressure differences before and after the inlet nozzle is in the constricted space, due to the pressure and the negative pressure during the spin, the foam or here the foam bubbles entrained in the constricted space due to the self adjusting flow rate, so that the foam or Foam bubbles do not penetrate into the opening cross-section of the inlet nozzle.
  • the foam bubbles are entrained in this area due to their geometric shape.
  • the inlet opening is arranged in a formed on the wall of the tub flattening or trough.
  • the trough is curved towards the tub, wherein the trough is formed flattened in the deepest depression.
  • the walls of the trough in this case go tangentially into the adjacent wall regions of the tub, so that even in the transition region largely laminar flows form, whereby turbulence of the foam mixture can be avoided.
  • the tub is cylindrical, wherein the effect of the flow influencing is provided or promoted by the fact that the flattening or trough extends over the entire axial length of the tub.
  • this pressure and suction structure over the entire region of the tub wall, so that the storage structure results over the extension of the drum and tub wall. All directions refer to the operational installation position of the washing machine.
  • the inlet opening is arranged in the deepest part of the depression.
  • the inlet opening in the deepest case has a distance between the drum and the tub, which is at least 30% less than the remaining distance between the drum and the tub.
  • the inlet opening in the deepest depression or in the flattened area at a distance from the drum and the tub which is between 50 to 70% less than the remaining distance between the drum and tub.
  • the inlet opening takes here with its opening cross-section a tangential position with the slope zero to the jacket of the drum.
  • the inlet opening of the water inlet nozzle is enclosed, on which a flexible hose is attached and thus establishes the connection to the Ein Hugheskasten.
  • the inlet opening is arranged eccentrically closer to an end face of the tub.
  • FIG. 1 shows in the sectional view of a washing machine 1 with a housing 2 in which a tub 3 is arranged.
  • a cylindrical drum 4 is rotatably mounted, wherein in the wall 5 of the tub 3 at least one inlet opening 6 is provided for washing liquid in the upper region of the tub 3.
  • a water inlet nozzle 7 is arranged at the inlet opening 6, which via a hose. 8 is connected to a cistern 9 for the detergent addition.
  • the inlet opening 6 is arranged with the water inlet nozzle 7 in the shell-side wall 10 of the tub 3 closer to the shell 11 of the drum 4, as the drum 4 surrounded wall portions 12 of the tub 3 to form a storage space 13 in front of the region of the inlet opening 6, which prevents foam or water foam mixture from exiting the inlet opening 6 during washing or spinning.
  • Foam may be produced by the rotating drum, for example, when foam-forming detergent is used.
  • the flattened area of the container wall is particularly easy to see in the FIG. 2 , Where the storage space 13 is formed by the inlet opening 6 is arranged in a recess 14 formed in the wall 10 of the tub 3.
  • a trough 14 here is also the flattened wall portion of the tub container jacket to look at.
  • a storage space 13 for the foam wherein a back pressure forms here in front of the inlet opening 6, and forms a vacuum space behind the inlet opening 6, where the trough transition again merges into the wall area 12.
  • the foam in front of the inlet opening 6 compresses and is compressed here, wherein in the region of the inlet opening 6, where the distance between the inlet opening 6 and the drum wall 11 is the lowest, the foam is pulled through at a higher speed, because at the area behind the inlet opening 6 forms a suction effect.
  • This situation is in the FIG. 2 to recognize where the channel-like trough 14 is formed curved to the tub interior, with its lowest position in the sectional plane C according to FIG. 3 is shown.
  • the trough 14 is flattened in the deepest part 15, as can be seen from the illustrations of Figures 3 . 4 and 5 results. It can also be seen from the illustrations that the trough 14 extends channel-shaped in the deepest part of the channel over the length of the suds container wall 10, which is illustrated in particular by the registered sectional planes C according to FIG. 3 ,
  • the inlet opening 6 is in the deepest part 15 of the trough channel 16.
  • the inlet opening 6 in this case has a distance between the drum 4 and the tub 3 in the deepest part 15, which is at least 30% less than the remaining distance between the drum 4 and the tub 3.
  • the inlet opening 6 in the deepest deepest 15th a distance between the drum 4 and tub 3, which is between 50 to 70% less than the remaining distance between the drum 4 and tub 3.
  • the water inlet nozzle 7 is embedded in the inlet opening 6.
  • a flexible hose 8 is fixed, which in particular establishes the connection to the dispenser 9.
  • the inlet opening 6 is arranged off-center closer to the end face of the tub 3.
  • FIG. 2 shows a sectional plane through the tub 3 seen from the front. It is characteristic that the water inlet nozzle 7 is positioned particularly close to the drum shell. Due to the centrifugal force in the radial direction, the foam is forced into the constriction between the tub 3 and the drum 4. Perpendicular to this cross-sectional area flows during spin the water foam mixture, which is entrained with the drum 4, by a considerably reduced in the region of the water inlet nozzle 7 area, as can be seen from the various sectional planes of the Figures 3 . 4 and 5 becomes clear.
  • the cross-section in the area of the inlet opening 6, sectional plane B-B and C-C, is clearly at least 30% less than usual on the tub 3, as shown by the sectional planes A-A, D-D, E-E. Excluded from this remains the lower portion of the tub 3, where due to the water drain 19 and because of the radiator 18 (FIG. Fig. 1 )
  • the space between the tub wall and the drum wall is made larger.
  • the design increases the back pressure of the circulating foam water mixture, whereby the external static pressure decreases. This reliably prevents foam from being forced through the tube 8 into the dispenser 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Detergent Compositions (AREA)
EP09008961A 2009-07-09 2009-07-09 Waschmaschine mit einer Vorrichtung zum Vermeiden von Schaumaustritt Not-in-force EP2273003B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PL09008961T PL2273003T3 (pl) 2009-07-09 2009-07-09 Pralka automatyczna z urządzeniem zapobiegającym wydostawaniu się piany
ES09008961T ES2367639T3 (es) 2009-07-09 2009-07-09 Lavadora con un dispositivo para evitar la salida de espuma.
AT09008961T ATE521749T1 (de) 2009-07-09 2009-07-09 Waschmaschine mit einer vorrichtung zum vermeiden von schaumaustritt
EP09008961A EP2273003B1 (de) 2009-07-09 2009-07-09 Waschmaschine mit einer Vorrichtung zum Vermeiden von Schaumaustritt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09008961A EP2273003B1 (de) 2009-07-09 2009-07-09 Waschmaschine mit einer Vorrichtung zum Vermeiden von Schaumaustritt

Publications (2)

Publication Number Publication Date
EP2273003A1 EP2273003A1 (de) 2011-01-12
EP2273003B1 true EP2273003B1 (de) 2011-08-24

Family

ID=41320099

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09008961A Not-in-force EP2273003B1 (de) 2009-07-09 2009-07-09 Waschmaschine mit einer Vorrichtung zum Vermeiden von Schaumaustritt

Country Status (4)

Country Link
EP (1) EP2273003B1 (pl)
AT (1) ATE521749T1 (pl)
ES (1) ES2367639T3 (pl)
PL (1) PL2273003T3 (pl)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19648201A1 (de) 1996-11-21 1998-05-28 Aeg Hausgeraete Gmbh Trommelwaschmaschine
KR100495069B1 (ko) * 2002-11-29 2005-06-14 엘지전자 주식회사 드럼 세탁기의 터브
EP1849906B1 (en) * 2006-04-27 2009-11-04 Electrolux Home Products Corporation N.V. Integrated tub overflow system for top-loading washing machine
WO2008012340A1 (en) * 2006-07-26 2008-01-31 Arcelik Anonim Sirketi A washing machine
TR200900549T1 (tr) * 2006-07-28 2009-06-22 Arçeli̇k Anoni̇m Şi̇rketi̇ Bir çamaşır makinası
WO2008012354A1 (en) * 2006-07-28 2008-01-31 Arcelik Anonim Sirketi A washing machine
DE102007036041A1 (de) * 2007-08-01 2009-02-05 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Beseitigen von Schaum in einer Trommelwaschmaschine und hierzu geeignete Trommelwaschmaschine

Also Published As

Publication number Publication date
ATE521749T1 (de) 2011-09-15
EP2273003A1 (de) 2011-01-12
ES2367639T3 (es) 2011-11-07
PL2273003T3 (pl) 2011-11-30

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