EP2158349B1 - Waschmaschine und verfahren zur behandlung von wäsche mit schaum - Google Patents

Waschmaschine und verfahren zur behandlung von wäsche mit schaum Download PDF

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Publication number
EP2158349B1
EP2158349B1 EP08760838A EP08760838A EP2158349B1 EP 2158349 B1 EP2158349 B1 EP 2158349B1 EP 08760838 A EP08760838 A EP 08760838A EP 08760838 A EP08760838 A EP 08760838A EP 2158349 B1 EP2158349 B1 EP 2158349B1
Authority
EP
European Patent Office
Prior art keywords
drum
foam
washing machine
laundry
washing
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
EP08760838A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2158349A1 (de
Inventor
Ingo Schulze
Harald MOSCHÜTZ
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
Priority to EP10186275.3A priority Critical patent/EP2312036B1/de
Priority to PL10186275T priority patent/PL2312036T3/pl
Priority to PL08760838T priority patent/PL2158349T3/pl
Publication of EP2158349A1 publication Critical patent/EP2158349A1/de
Application granted granted Critical
Publication of EP2158349B1 publication Critical patent/EP2158349B1/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
    • D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
    • D06F35/005—Methods for washing, rinsing or spin-drying
    • D06F35/006—Methods for washing, rinsing or spin-drying for washing or rinsing only
    • 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
    • D06F17/00—Washing machines having receptacles, stationary for washing purposes, wherein the washing action is effected solely by circulation or agitation of the washing liquid
    • D06F17/12—Washing machines having receptacles, stationary for washing purposes, wherein the washing action is effected solely by circulation or agitation of the washing liquid solely by gases, e.g. air or steam, introduced into the washing liquid

Definitions

  • the invention relates to a washing machine and a method for treating laundry with foam.
  • the mechanical processing of laundry items in a washing machine equipped with a drum is mainly ensured by a cyclically repeated lifting of the laundry items in the drum arranged Wäschemit Meeting and falling down the laundry items of these during the rotation of the drum (laundry case).
  • an optimal so-called discharge parabola is generally determined by setting a rotational speed of the drum.
  • the input of mechanical energy is achieved at a diameter of the drum of a front loader washing machine currently in use in Europe at about 50 revolutions per minute.
  • a reversing rhythm i. a cyclically repeated switching the direction of rotation of the drum, the mechanical processing during washing can be varied and adjusted in a wide range.
  • Washing is particularly problematic with items of laundry that are sensitive to mechanical processing, such as items of laundry made of high-quality textiles such as wool, silk and tulle.
  • the laundry case of such laundry should be minimized, especially with a large diameter of the drum. Therefore, such a laundry item is hardly moved during the washing phase and partially pulled through only by the wash liquor by the drum is not completely rotated. This is also referred to as a wool swing or wool cradle. In this case, however, due to the greatly restricted movement of the laundry no adequate washing performance is achieved.
  • the DE 35 28 253 A1 discloses a method and a device for washing laundry, in particular a method for washing laundry in a washing machine while introducing room air into the washing and / or rinsing eye and a washing machine with a rotatable drum and a fan, one above the highest achievable water level
  • guided air duct and arranged along the bottom of the tub nozzle Room air is pressed into the tub by means of a blower, this room air coming in through the holes in the wash drum.
  • the DE 29 07 562 A1 describes a method for increasing the cleaning efficiency of washing machines and washing machines for carrying out the method.
  • a method for increasing the cleaning effect of drum washing machines is disclosed, in which the laundry is mechanically moved in a liquor and the liquor is added finely divided into low-frequency vibrations offset air.
  • a washing machine for carrying out this method has a tub disposed in a housing and means for moving the laundry within the tub, wherein in the housing a diaphragm air pump is mounted, which promotes via a mechanical vibrations transferable tube air through at least one air distributing the nozzle head, the is arranged in the interior of the tub below the Laugendazzlings.
  • the US-A-5,295,373 discloses a washing machine with a drum and a tub, the latter having a bubble generator connected to an air pump.
  • a bubble generator connected to an air pump.
  • portion-wise bubbling and its prompt disposal before new bubbles are introduced into the drum are of great importance. Therefore, in a lower region between the drum and the tub a specially designed bubble generator is arranged.
  • the BE 643 806 A describes a washing process in a drum washing machine in which laundry is treated at a temperature above 95 ° C with a turbulent wash liquor. Air is introduced below the drum to contribute to intense agitation and a reduction in foaming at that temperature.
  • the WO 99/37847 A relates to a method and a device for cleaning articles.
  • the device which may be a washing machine or a dishwasher, comprises an at least partially closable space for receiving the items for cleaning and means for providing a cleaning liquid for the room, wherein there are means for providing a gas for the room, which promote the cleaning process ,
  • a gas is preferably provided at a higher than atmospheric pressure.
  • the air introduced into the washing machine serves the purpose of mechanically assisting the cleaning process.
  • the object of the present invention is therefore to provide a washing machine and a method for the gentle treatment of laundry, in which the effects of the mechanics of the washing process are low, the washing machine and the method especially for the treatment of delicate laundry items from high-quality textiles such as wool , Silk or tulle are suitable.
  • washing machine and a method having the features of the independent patent claims.
  • Preferred embodiments of the invention are listed in the respective dependent claims.
  • Preferred embodiments of the washing machine correspond to preferred embodiments of the method, even if it is not individually referred to herein.
  • the invention thus relates to a washing machine for particularly gentle treatment of laundry with foam from a wash liquor with a rotatably mounted drum in a tub, arranged at the bottom of the tub lye drain system, a drive motor for the drum and a heater, the washing machine one of the drum independently switchable device for introducing air into the wash liquor and the device for recording air is an air compressor pump with an outlet to the tub.
  • the output of the air compressor pump is located in a lower region between the drum and the tub.
  • "lower area between the drum and the tub” preferably means the area between the drum and the tub which is filled by the wash liquor when present in the tub in an amount sufficient to reach the lower end of the drum to touch.
  • the geometry of the foam can be optimized via the structural design of a vent at the outlet of the air compressor pump, wherein a pore size between a fine-pored and a coarse-pored foam is set.
  • a fine-pored foam generally has a better cleaning effect, as it can easily penetrate into laundry.
  • the washing machine is provided with an additional structural expression of the drum, which for Supporting a formation of foam is provided. It is a Wäschemit facilitator, which is optimized with regard to the entry of air. It is understood that a plurality or multiplicity of such laundry carriers, in particular a number of three or four, is more preferred.
  • the aforementioned Wäschemit distractor can be molded as an integral part of the drum or used as an additional component in the drum. He also represents a variety of embodiments for the structural expression, which is conceivable in particular as an arrangement of special ribs or as a helically wound expression of an inner part of the drum.
  • the device for introducing air into the wash liquor is preferably controllable by a corresponding controlled system, which in particular comprises a control device of the washing machine. This allows a controllable entry of air into the wash liquor. In addition to the possibility of a constant air entry, which can only be switched on and off, a continuous or stepwise variation of the amount of registered air can be provided.
  • a washing machine has switching means for rotating and stopping the drum.
  • a washing machine according to the invention preferably has a sensor for determining a quantity of a liquid or foam present in the tub as part of the said controlled system.
  • the filling of the drum with foam can be determined by a suitable sensor.
  • a suitable sensor for determining the amount of a liquid in the tub or a foam whose sensor signal is tracked during the process, a conventional sensor can be used for the determination of the water level.
  • Such a sensor generally measures a hydrostatic pressure p and / or a time gradient ( ⁇ p / ⁇ t) 1 of the hydrostatic pressure p.
  • the foam filling is generally indicated by a sudden pressure increase at the sensor.
  • An advantage of the invention is based on the fact that the laundry case is limited by a shortening of the fall path for the laundry items.
  • the inner portion of the drum is filled with foam when treating laundry with foam for the most part. When rotating the drum, the laundry items therefore fall directly into the built foam. This reduces the fall path and reduces the kinetic energy of the laundry items Impact on the foam in a gentle way in the deformation or movement and heating of the foam implemented.
  • the surprisingly improved cleaning effect can be explained by the increase in the relative movement between the foam and the laundry. This leads to an improvement in the dissolution and removal of impurities in the laundry.
  • the invention also relates to a method for the particularly gentle treatment of laundry with a foam from a wash liquor in a washing machine according to the invention.
  • the foam generally fills a large part of the interior of the drum.
  • the foam is produced in an amount sufficient to have the foam in the drum at a height of 1/3 to 2/3 of an inner diameter of the drum.
  • the process of the invention works particularly well when the wash liquor has a detergent which can give a stable foam.
  • a suitable detergent is for example in the DE 196 24 637 A1 described.
  • a detergent is used which allows the formation of foam bubbles, whose diameter is smaller than the diameter of openings in the drum and / or therein Wäschemit distractn.
  • the laundry pickups have openings. These are distorted larger than the diameter of the foam produced with a detergent. In this case, it is again preferred that the openings are significantly larger than the diameters of the foam bubbles produced.
  • the generation of foam can take place when the drum is stationary.
  • the drum is rotated for rapid production of a foam and its good distribution within the drum at a suitable speed U 2 , wherein advantageously the direction of rotation can be changed.
  • the speed U 2 can vary within wide ranges. Preferably, a speed U 2 in the range of 30 to 80, in particular 40 to 60, for example 50 revolutions per minute is used.
  • a speed U 2 in the range of 30 to 80, in particular 40 to 60, for example 50 revolutions per minute is used.
  • the generation of foam can be done at room temperature.
  • the process according to the invention is carried out with a heated wash liquor and / or with heating of the wash liquor.
  • the items of laundry are advantageously completely embedded in the foam.
  • Inventive washing machine and method have significant advantages.
  • the protection of delicate items such as wool, silk or tulle in a washing process is significantly improved.
  • the washing performance is improved, so that in otherwise the same sequence of a wash program, an improved washing effect is achieved.
  • FIG. 1 illustrated embodiment illustrated in more detail.
  • FIG. 1 is a schematic representation of the relevant parts for illustration of a washing machine in which a method according to the invention can be carried out. Other embodiments are conceivable.
  • the washing machine of the FIG. 1 embodiment shown has a tub 1, in which a drum 2 rotatably mounted and operated by a drive motor 14.
  • the axis of rotation 3 of the drum 2 is directed at a small angle (eg 13 °) from the horizontal to the front upwards, so that one has easier access and insight into the interior of the drum 2.
  • the washing machine also has a liquor inlet system comprising a water connection fitting for the domestic water network 8, an electrically controllable valve 9 and a supply line 10 to the tub 1, which may optionally also be guided via a Waschstoffein Kunststoff Anlagen Maschinene ("Ein Hamptonschale") 11, from which the feed water Can carry detergent portions in the tub 1.
  • a heater 13 in the tub 1, a heater 13.
  • the valve 9 as well as the heater 13 are controlled by a control device (“program control”) 12 in response to a program flowchart, the time program and / or the achievement of certain measured values of parameters as alkali level, foam level, liquor temperature, speed of the drum 2, etc. is bound within the washing machine.
  • a sensor 15 for the measurement of the hydrostatic pressure p in the tub 1 is provided.
  • a lye drainage system 20 which according to conventional practice in addition to corresponding lines a drain valve and a drain pump includes is shown for clarity only schematically.
  • FIG. 1 As a device 16 for entry of air into the wash liquor is in the embodiment of FIG. 1 shown a combination with an air compressor pump 17, the output 18 in a lower portion 19 between the drum 2 and the tub 1 protrudes.
  • the Wäschemit perhaps alone 4 are optimized as additional structural features of the drum 2 to support a formation of foam, as described in detail above.
  • a regulation of the formation of foam takes place via a controlled system comprising the sensor 15 and the control device 12, so that, whether by alternating switching on and off of the compressor pump 17 or a variation of its power, the amount of For the treatment of the textiles available foam controls and in particular is limited.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
  • Main Body Construction Of Washing Machines And Laundry Dryers (AREA)
  • Treatment Of Fiber Materials (AREA)
EP08760838A 2007-06-20 2008-06-11 Waschmaschine und verfahren zur behandlung von wäsche mit schaum Not-in-force EP2158349B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP10186275.3A EP2312036B1 (de) 2007-06-20 2008-06-11 Waschmaschine und Verfahren zur Behandlung von Wäsche mit Schaum
PL10186275T PL2312036T3 (pl) 2007-06-20 2008-06-11 Pralka i sposób obróbki prania przy użyciu piany
PL08760838T PL2158349T3 (pl) 2007-06-20 2008-06-11 Pralka automatyczna i sposób obróbki prania przy użyciu piany

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007028213A DE102007028213A1 (de) 2007-06-20 2007-06-20 Waschmaschine und Verfahren zur Behandlung von Wäsche mit Schaum
PCT/EP2008/057285 WO2008155272A1 (de) 2007-06-20 2008-06-11 Waschmaschine und verfahren zur behandlung von wäsche mit schaum

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP10186275.3A Division EP2312036B1 (de) 2007-06-20 2008-06-11 Waschmaschine und Verfahren zur Behandlung von Wäsche mit Schaum
EP10186275.3 Division-Into 2010-10-01

Publications (2)

Publication Number Publication Date
EP2158349A1 EP2158349A1 (de) 2010-03-03
EP2158349B1 true EP2158349B1 (de) 2013-02-13

Family

ID=39865579

Family Applications (2)

Application Number Title Priority Date Filing Date
EP10186275.3A Active EP2312036B1 (de) 2007-06-20 2008-06-11 Waschmaschine und Verfahren zur Behandlung von Wäsche mit Schaum
EP08760838A Not-in-force EP2158349B1 (de) 2007-06-20 2008-06-11 Waschmaschine und verfahren zur behandlung von wäsche mit schaum

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP10186275.3A Active EP2312036B1 (de) 2007-06-20 2008-06-11 Waschmaschine und Verfahren zur Behandlung von Wäsche mit Schaum

Country Status (7)

Country Link
US (1) US9926660B2 (pl)
EP (2) EP2312036B1 (pl)
CN (2) CN101711294B (pl)
DE (1) DE102007028213A1 (pl)
EA (2) EA017720B1 (pl)
PL (2) PL2158349T3 (pl)
WO (1) WO2008155272A1 (pl)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101184457B1 (ko) 2007-09-07 2012-09-20 삼성전자주식회사 세탁기 및 그 세탁제어방법
DE102009027934A1 (de) * 2009-07-22 2011-01-27 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Veredeln von Textilien in einer Haushaltswaschmaschine sowie Steuerungsvorrichtung und Haushaltswaschmaschine
DE102009028197A1 (de) * 2009-08-04 2011-02-17 BSH Bosch und Siemens Hausgeräte GmbH Vorrichtung zum Erzeugen von Schaum in einer Wäschebehandlungsmaschine, Verfahren zu ihrer Verwendung sowie Wäschebehandlungsmaschine
EP3428338B1 (en) * 2016-03-08 2023-09-06 LG Electronics Inc. Laundry handling apparatus and control method therefor
DE102016212984A1 (de) * 2016-07-15 2018-01-18 Henkel Ag & Co. Kgaa Prüfen auf potentiell unerwünschte Wäschestücke
CN107044034B (zh) * 2017-05-27 2019-05-21 无锡小天鹅股份有限公司 洗衣机
WO2021026475A2 (en) 2019-08-08 2021-02-11 Kemin Industries, Inc. Methods of treating textiles with foam and related processes
US20220042241A1 (en) * 2020-08-07 2022-02-10 Kemin Industries, Inc. Methods of treating textiles with foam and related processes

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Also Published As

Publication number Publication date
EP2158349A1 (de) 2010-03-03
CN101711294A (zh) 2010-05-19
PL2158349T3 (pl) 2013-07-31
EP2312036B1 (de) 2014-05-14
EA017720B1 (ru) 2013-02-28
DE102007028213A1 (de) 2008-12-24
CN101711294B (zh) 2012-03-21
EA021320B1 (ru) 2015-05-29
EA201270668A1 (ru) 2012-12-28
PL2312036T3 (pl) 2014-10-31
US20100242184A1 (en) 2010-09-30
US9926660B2 (en) 2018-03-27
CN102535097A (zh) 2012-07-04
CN102535097B (zh) 2016-08-24
EP2312036A1 (de) 2011-04-20
WO2008155272A1 (de) 2008-12-24
EA201070017A1 (ru) 2010-06-30

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