EP2453052A1 - Verbesserungen bei einer Wasch- und Trocknermaschine - Google Patents

Verbesserungen bei einer Wasch- und Trocknermaschine Download PDF

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Publication number
EP2453052A1
EP2453052A1 EP12153006A EP12153006A EP2453052A1 EP 2453052 A1 EP2453052 A1 EP 2453052A1 EP 12153006 A EP12153006 A EP 12153006A EP 12153006 A EP12153006 A EP 12153006A EP 2453052 A1 EP2453052 A1 EP 2453052A1
Authority
EP
European Patent Office
Prior art keywords
drum
drying
drying machine
clothes washing
speed
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Withdrawn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
EP12153006A
Other languages
English (en)
French (fr)
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
Original Assignee
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
Publication of EP2453052A1 publication Critical patent/EP2453052A1/de
Withdrawn legal-status Critical Current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
    • D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
    • D06F35/005—Methods for washing, rinsing or spin-drying

Definitions

  • the present invention refers to 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.
  • 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.
  • 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 third improvement 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 this improvement 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 rotational speed of the drum is then reduced by a value that may each time - and for each case - be found experimentally and/or defined theoretically; in fact, driving the drum to rotate at an excessive speed is found to be fully useless in this case and, in particular, the rotational speeds of the drum shall be selected on the basis of the twofold requirement that, at the higher one of such speeds, the outermost portion of the washload shall be able to keep adhering against the side wall of the drum, whereas, at the lower one of such speeds, the washload shall be able to substantially fall back onto the bottom of the drum so as to be stirred and change its arrangement, wherein it can be most readily appreciated that, in front of a varying weight of the washload, said rotational speeds thereof shall be varied accordingly, as anyone skilled in the art is well aware of, in order to duly allow for the different effect exerted by the centrifugal force on different washloads.
  • 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)
EP12153006A 2007-12-27 2007-12-27 Verbesserungen bei einer Wasch- und Trocknermaschine Withdrawn EP2453052A1 (de)

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 Parent Applications (3)

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

Publications (1)

Publication Number Publication Date
EP2453052A1 true EP2453052A1 (de) 2012-05-16

Family

ID=39495749

Family Applications (2)

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

Family Applications Before (1)

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

Country Status (2)

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EP (2) EP2075362B1 (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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0796942A2 (de) * 1996-03-19 1997-09-24 Kabushiki Kaisha Toshiba Wasch- und Trocknermaschine
GB2322141A (en) * 1997-02-12 1998-08-19 Toshiba Kk Control of spin-drying phase of washing machine
EP1164217A1 (de) * 1995-08-30 2001-12-19 Sharp Kabushiki Kaisha Trommeltrockner/Trommelwaschmaschine
EP1281803A1 (de) * 2001-07-31 2003-02-05 Samsung Electronics Co., Ltd. Waschmaschine
EP1538251A2 (de) * 2003-11-25 2005-06-08 Samsung Electronics Co., Ltd. Waschmaschine und Steuerungsverfahren dafür

Family Cites Families (7)

* 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
SE521337C2 (sv) 1999-08-09 2003-10-21 Electrolux Ab Textiltvättmaskin med ångtorkning
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
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1164217A1 (de) * 1995-08-30 2001-12-19 Sharp Kabushiki Kaisha Trommeltrockner/Trommelwaschmaschine
EP0796942A2 (de) * 1996-03-19 1997-09-24 Kabushiki Kaisha Toshiba Wasch- und Trocknermaschine
GB2322141A (en) * 1997-02-12 1998-08-19 Toshiba Kk Control of spin-drying phase of washing machine
EP1281803A1 (de) * 2001-07-31 2003-02-05 Samsung Electronics Co., Ltd. Waschmaschine
EP1538251A2 (de) * 2003-11-25 2005-06-08 Samsung Electronics Co., Ltd. Waschmaschine und Steuerungsverfahren dafür

Also Published As

Publication number Publication date
EP2075362B1 (de) 2015-11-04
RU2500846C2 (ru) 2013-12-10
EP2075362A1 (de) 2009-07-01
RU2008151963A (ru) 2010-07-10

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