EP2075362B1 - Verbesserungen für eine Wasch- und Trocknungsmaschine für Wäsche - Google Patents

Verbesserungen für eine Wasch- und Trocknungsmaschine für Wäsche Download PDF

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Publication number
EP2075362B1
EP2075362B1 EP07124094.9A EP07124094A EP2075362B1 EP 2075362 B1 EP2075362 B1 EP 2075362B1 EP 07124094 A EP07124094 A EP 07124094A EP 2075362 B1 EP2075362 B1 EP 2075362B1
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EP
European Patent Office
Prior art keywords
drum
speed
washload
clothes washing
drying
Prior art date
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Active
Application number
EP07124094.9A
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English (en)
French (fr)
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EP2075362A1 (de
Inventor
Silvano Cimetta
Andrea Mazzon
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.)
Electrolux Home Products Corp NV
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Electrolux Home Products Corp NV
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 Electrolux Home Products Corp NV filed Critical Electrolux Home Products Corp NV
Priority to EP07124094.9A priority Critical patent/EP2075362B1/de
Priority to EP12153006A priority patent/EP2453052A1/de
Priority to RU2008151963/12A priority patent/RU2500846C2/ru
Publication of EP2075362A1 publication Critical patent/EP2075362A1/de
Application granted granted Critical
Publication of EP2075362B1 publication Critical patent/EP2075362B1/de
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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

Definitions

  • the present invention relates to a method for controlling a washing machine or a so-called washer-dryer, i.e. combined clothes washing and drying machine, preferably of the kind used in household and residential applications, for washing and drying loads of clothes in a same appliance.
  • a washing machine or a so-called washer-dryer i.e. combined clothes washing and drying machine, preferably of the kind used in household and residential applications, for washing and drying loads of clothes in a same appliance.
  • EP 1 164 217 discloses a drum type drying/washing machine for performing washing through drying, comprising: a drum, incorporated rotatably inside the machine body, for accommodating laundry; a driving means for rotationally driving said drum; an air-blowing means for bringing air exhausted from said drum again into said drum through a circulating passage; a dehumidifying means for dehumidifying the air inside the circulating passage by cooling the air using cooling water; a heating means for heating the air dehumidified by said dehumidifying means; an exhausted air temperature detecting means for detecting the temperature of the air exhausted from said drum; ; and a control means for controlling said driving means and said heating means based on the temperature detected by said exhausted air temperature detecting means, wherein said control means controls said heating means to turn on the electricity at a final dehydration operation prior to shifting to a drying operation and controls said driving means such that dehydration is performed even during the drying operation.
  • EP 0 796 942 discloses an improved washer-dryer apparatus which performs wash, spin-dry and dry cycles in a sequential order, wherein a microcomputer controls a motor to repeatedly rotate in forward and backward directions at short time intervals after the spin-dry cycle, thereby performing a loosening cycle once or more times in which laundry stuck to the interior peripheral wall surface of the spin basket is uniformly distributed or dispersed in the basket. This is followed by the dry cycle.
  • the heated air is conducted all over the laundry in the spin basket, making it possible to uniformly dry the laundry and to prevent it from becoming wrinkled.
  • the above-cited aperture 4 is provided to draw in the air from the interior of the tub and, therefore, the thin hollow gap existing between the same tub and the rotating drum, and ultimately from the interior of the same rotating drum, thereby causing the air dwelling in the interior of the rotating drum to be forced back into said hollow gap by passing through the tiny perforations 6 provided in the side wall of the drum.
  • the hot air that is being blown into the drum - obviously from an aperture that is suitably provided in the zone of the bellows-like gasket, which is provided between the tub and the opening giving access into the drum, and which is of course firmly joined to the structure of the machine - will obviously tend to exit therefrom by flowing through the number of small perforations 6 provided in the cylindrical side wall of the same drum and, as a result, to follow a radial flowpath towards the outside.
  • the drum is driven to rotate at a low speed, as this generally occurs, actually, since the clothes - although just spin-dried - are still substantially wet, the same clothes will basically remain lying on the bottom of the drum, where it tumbles back and forth, i.e. first in a direction and then in the other one, following the reversals in the direction of rotation of the same drum, so as to avoid getting tangled.
  • the drum 1 is driven to rotate at a speed that is higher than the usual or normal one and, in particular, at a speed that shall be referred to as the "ventilation speed V" hereinafter, as represented in Figure 2 , in such manner that the washload is substantially lifted off the bottom of the drum and distributed therewithin, thereby spreading out - due to the effect of the centrifugal force - over the entire inner cylindrical surface of the same drum.
  • the rotational speed of the drum therefore, must be selected so as to be high enough to cause the still wet washload to lift off the bottom of the drum, as this is shown symbolically in Figure 3 .
  • this process consists in having the rotational speed of the drum controlled in accordance with a certain function (that may be freely selected among the number of possible ones) of the degree of moisture in the clothes as measured and suitably processed by the appropriate sensor and processing means of the machine.
  • variable rotational speeds of the drum are shared out among three corresponding phases, i.e.:
  • the drum is driven again to rotate at the initial ventilation speed V, however in the reverse direction of rotation, so as to go through the above-described cycle again.
  • the purpose of the aforementioned process is to allow the portion of washload, i.e. clothes lying closer to the axis of the drum to recurrently break loose, i.e. separate from the rest of such washload, owing to the rotational speed of the drum and, as a result, the centrifugal force being so reduced (phase Y), to move into a kind of "floating" arrangement along the axis of the drum, so as to be directly hit by the flow of hot air and be therefore able to dry in a significantly quicker manner.
  • the drum is slowed further down (phase Z) to such rotational speed as to cause the whole washload to move off the cylindrical periphery of the drum and fall onto the bottom thereof, so that it is now in a position as to be directly invested, i.e. hit by the flow of hot air for a short period of time, further to being tumbled and stirred so as to rearrange in a different manner in view of going through the next drum rotation cycle in the reverse direction.
  • phase Z phase Z
  • EP 1 354 997 B1 is a clothes washing machine in which, in accordance with the amount of clothes to be washed, the drum is driven to rotate at different speeds; in particular, when there is a great amount of clothes to be washed, the time interval selected for the rotational speed of the drum to rise from the minimum to the maximum value thereof is longer than the same speed interval when a smaller amount of clothes is loaded in the drum for washing.
  • the present improvement teaches to vary the rotational speed of the drum - between a reversal and the following one - from a maximum value (V max ) and a minimum value (V min ) thereof, and vice-versa, for a plurality of times.
  • V max maximum value
  • V min minimum value
  • such variation in the rotational speed of the drum must be such as to duly allow for the actual amount of clothes loaded in the drum for washing, since - as it is largely known - the greater the amount of clothes in the washload, the higher the likelihood for the washload to get tangled.
  • this improvement is based on introducing a modification factor for the rotational speed of the drum during the washing phase in accordance with the actual weight of the washload. In detail, this occurs as follows:
  • This speed variation which preferably occurs at constant values so as to practically follow a pattern in the shape of the battlements of a tower, is therefore such to ensure that - without any need arising for the rotation of the drum to be stopped - the washload is able to disrupt from its configuration and change its arrangement, so as to avoid the afore-described undesired tangling effect (see Figure 8 ).
  • said two values of the rotational speed of the drum must most obviously be selected in a proper manner; in particular, it is preferable if, during the rotation of the drum at V max , the washload spreads out along the cylindrical periphery of the drum, whereas, at the opposite speed V min , the washload should on the contrary fall back onto the bottom of the drum.
  • the weight of the washload may of course be directly input, i.e. fed into the control unit of the machine by different means and methods.
  • the control unit of the machine In the most immediate and simple of such methods, it is the same user that delivers an appropriate command to the machine; other methods - all of which largely known as such in the art - work in a variety of different manners, e.g. by measuring the inertia of the loaded drum on the basis of the motor torque, or the power used by the motor, or on the basis of the amount of water soaked up by the clothes, and so on.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Claims (4)

  1. Verfahren zum Steuern einer Waschmaschine für Wäsche oder einer kombinierten Wasch- und Trocknungsmaschine für Wäsche, umfassend einen Laugenbehälter (2), der mit einer im Wesentlichen zylindrischen Wand versehen ist, eine Drehtrommel (1), die drehbar innerhalb des Laugenbehälters angeordnet und mit einer Anzahl von Perforationen (6) in der zylindrischen Seitenfläche davon versehen ist, dadurch gekennzeichnet, dass die Drehzahl der Trommel während des Waschzyklus so eingestellt ist, dass sie wiederholt zwischen zwei extremen Geschwindigkeitswerten zwischen aufeinanderfolgenden Umkehrzyklen in Drehrichtung variiert, wobei der obere Wert (Vmax) der variablen Geschwindigkeit der Geschwindigkeitswert ist, bei dem bewirkt wird, dass sich die Wäscheladung in der Trommel verteilt und entlang der Innenfläche der Seitenwand der Trommel ausbreitet, die damit in Kontakt steht, und wobei der untere Wert (Vmin) der variablen Geschwindigkeit der Geschwindigkeitswert ist, bei dem bewirkt wird, dass sich die Wäscheladung loslöst, d. h. zumindest in beschränktem Ausmaß von der Wand der Trommel trennt, und dass die Trommel so eingestellt ist, dass sie sich sowohl mit dem oberen als auch dem unteren Geschwindigkeitswerten dreht, während sie sich in eine gleiche Richtung dreht.
  2. Verfahren zum Steuern einer Waschmaschine für Wäsche oder einer kombinierten Wasch- und Trocknungsmaschine für Wäsche nach Anspruch 1, dadurch gekennzeichnet, dass ein Geschwindigkeitsvariationsmuster ein sich abwechselndes Muster mit konstanten Werten ist, das sich abwechselnd vom und zum oberen Wert (Vmax) und unteren Wert (Vmin) bewegt.
  3. Verfahren zum Steuern einer Waschmaschine für Wäsche oder einer kombinierten Wasch- und Trocknungsmaschine für Wäsche nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Variation der Drehzahl der Trommel in beide abwechselnd umgekehrten Drehrichtungen durchgeführt wird.
  4. Verfahren zum Steuern einer Waschmaschine für Wäsche oder einer kombinierten Wasch- und Trocknungsmaschine für Wäsche nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die extremen, d. h. die oberen und unteren Geschwindigkeitswerte vom Gewicht der Wäscheladung abhängen.
EP07124094.9A 2007-12-27 2007-12-27 Verbesserungen für eine Wasch- und Trocknungsmaschine für Wäsche Active EP2075362B1 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP07124094.9A EP2075362B1 (de) 2007-12-27 2007-12-27 Verbesserungen für eine Wasch- und Trocknungsmaschine für Wäsche
EP12153006A EP2453052A1 (de) 2007-12-27 2007-12-27 Verbesserungen bei einer Wasch- und Trocknermaschine
RU2008151963/12A RU2500846C2 (ru) 2007-12-27 2008-12-26 Усовершенствованная машина для стирки и сушки белья

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07124094.9A EP2075362B1 (de) 2007-12-27 2007-12-27 Verbesserungen für eine Wasch- und Trocknungsmaschine für Wäsche

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP12153006A Division-Into EP2453052A1 (de) 2007-12-27 2007-12-27 Verbesserungen bei einer Wasch- und Trocknermaschine

Publications (2)

Publication Number Publication Date
EP2075362A1 EP2075362A1 (de) 2009-07-01
EP2075362B1 true EP2075362B1 (de) 2015-11-04

Family

ID=39495749

Family Applications (2)

Application Number Title Priority Date Filing Date
EP12153006A Withdrawn EP2453052A1 (de) 2007-12-27 2007-12-27 Verbesserungen bei einer Wasch- und Trocknermaschine
EP07124094.9A Active EP2075362B1 (de) 2007-12-27 2007-12-27 Verbesserungen für eine Wasch- und Trocknungsmaschine für Wäsche

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP12153006A Withdrawn EP2453052A1 (de) 2007-12-27 2007-12-27 Verbesserungen bei einer Wasch- und Trocknermaschine

Country Status (2)

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EP (2) EP2453052A1 (de)
RU (1) RU2500846C2 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011007141A1 (de) * 2011-04-11 2012-10-11 Gottlob Stahl Wäschereimaschinenbau GmbH Waschmaschine
EP2868793A1 (de) * 2013-11-05 2015-05-06 Whirlpool Corporation Verfahren zur Verbesserung der Waschleistungen einer Waschmaschine und Horizontalachsen-Waschmaschine mit solch einem Verfahren

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4336350A1 (de) * 1993-10-25 1995-04-27 Bosch Siemens Hausgeraete Verfahren zum Bestimmen der Wäschemenge in einer Wäschebehandlungsmaschine
US5887456A (en) * 1995-08-30 1999-03-30 Sharp Kabushiki Kaisha Drum type drying/washing machine
JP3464335B2 (ja) * 1996-03-19 2003-11-10 株式会社東芝 洗濯乾燥機
JPH10216391A (ja) * 1997-02-12 1998-08-18 Toshiba Corp ドラム式洗濯機
SE521337C2 (sv) 1999-08-09 2003-10-21 Electrolux Ab Textiltvättmaskin med ångtorkning
KR100403026B1 (ko) * 2001-07-31 2003-10-23 삼성전자주식회사 세탁물의 흡수특성을 고려한 세탁기의 제어방법
ITPN20010070A1 (it) 2001-10-10 2003-04-10 Electrolux Zanussi Elettrodome Macchina lavatrice-asciugatrice di biancheria
DE10217009C1 (de) 2002-04-16 2003-10-16 Miele & Cie Waschverfahren für eine programmgesteuerte Trommelwaschmaschine
KR101138888B1 (ko) * 2003-11-25 2012-05-14 삼성전자주식회사 세탁기 및 그 제어방법
JP4111168B2 (ja) * 2004-05-18 2008-07-02 松下電器産業株式会社 ドラム式洗濯機
EP1650338A3 (de) 2004-10-22 2006-07-05 LG Electronics, Inc. Wäschetrockner
KR100700780B1 (ko) 2004-11-12 2007-03-27 엘지전자 주식회사 건조 겸용 세탁기 및 건조 겸용 세탁기의 세탁 제어 방법

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Publication number Publication date
RU2008151963A (ru) 2010-07-10
EP2075362A1 (de) 2009-07-01
EP2453052A1 (de) 2012-05-16
RU2500846C2 (ru) 2013-12-10

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