EP1283292B1 - Procédé pour commander la vitesse de rotation du tambour d'une machine à laver le linge pendant l'essorage - Google Patents

Procédé pour commander la vitesse de rotation du tambour d'une machine à laver le linge pendant l'essorage Download PDF

Info

Publication number
EP1283292B1
EP1283292B1 EP02015297A EP02015297A EP1283292B1 EP 1283292 B1 EP1283292 B1 EP 1283292B1 EP 02015297 A EP02015297 A EP 02015297A EP 02015297 A EP02015297 A EP 02015297A EP 1283292 B1 EP1283292 B1 EP 1283292B1
Authority
EP
European Patent Office
Prior art keywords
drum
water
spin
level
tub
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.)
Expired - Lifetime
Application number
EP02015297A
Other languages
German (de)
English (en)
Other versions
EP1283292A3 (fr
EP1283292A2 (fr
Inventor
Piero Babuin
Mirko Gasparini
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 EP1283292A2 publication Critical patent/EP1283292A2/fr
Publication of EP1283292A3 publication Critical patent/EP1283292A3/fr
Application granted granted Critical
Publication of EP1283292B1 publication Critical patent/EP1283292B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/40—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of centrifugal separation of water from the laundry
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/18—Washing liquid level
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • D06F2105/48—Drum speed

Definitions

  • the present invention refers to a method for controlling the rotational speed of the drum of an automatic clothes washing machine in the spin-extraction phase of a washing cycle.
  • Modern clothes washing machines (see e.g. GB 2 168 388 A, DE 199 08 802 A) are generally known to use small amounts of water and, therefore, are quite easily subject to considerable sudsing, i.e. heavy foam formation during clothes washing phases, owing for instance to the addition of an excessive amount of detergent in the water or the use of a detergent product that by its nature gives rise to excessive foaming.
  • the method according to the present invention may be implemented in a clothes washing machine featuring a substantially traditional structure, with a washing tub 1 that houses a rotating drum 2 adapted to hold the clothes and to be selectively driven rotatably at a low washing speed (under cyclical reversal of the direction of rotation) and a high spin-extraction speed by an electric motor 3 controlled by a programme sequence control unit 4.
  • the clothes washing machine shall be understood as being provided with a plurality of operational elements and parts controlled by said programme sequence control unit 4, which is preferably of an electronic type, to carry out a number of selectable operating cycles, at least one of which comprises in particular a washing phase carried out with detergent-added water that is let into the washing tub 1 up to a first operating level L1 and is preferably heated up.
  • the washing phase is concluded by at least a water discharge phase, in which the drain pump 6 is energized by the programme sequence control unit 4 under the control of an analogue pressure switch 7 (or a similar level-control switch or sensor).
  • the pressure switch 7 drives the programme sequence control unit 4 with a signal that is indicative of the pressure determined by the variations in the level of the water (along with any possible foam in said water) in the washing tub 1. For reasons of greater simplicity, in the following description the assumption is made that the pressure is directly proportional to the water level.
  • the programme sequence control unit 4 is set so as to be adapted to start the water discharge phase, through the energization of the drain pump 6, under substantially static conditions of the drum 2, in such a manner as to enable the foam that may be present in the washing tub to be substantially abated.
  • the programme sequence control unit is further set so as to stop the drain pump 6 and start the driving motor 3, in view of bringing the drum 3 up to a maximum spin-extraction speed Vs, when the water in the washing tub 1 lowers down to a minimum level L2 that preferably corresponds to the minimum pressure value P2 that can be detected by the pressure switch 7. In the example illustrated in Figure 2, this occurs at an instant t1, after which the drum is accelerated into spin-extraction, so that the resulting water released by the clothes causes the water level in the washing tub 1 to increase.
  • the programme sequence control unit 4 is set so as to energize again the drain pump 6 and stop the acceleration of the driving motor 3, while keeping the instant speed thereof substantially constant, upon the pressure switch 7 detecting a pre-determined maximum pressure value P3 that substantially corresponds to a water level L3 that is greater than L2.
  • said level L3 is lower than or equal to the level at the base 8 of the rotating drum 2, in such a manner as to prevent any further foam from forming owing to a contact of the rotating drum with the water containing sudsing, i.e. foaming additives.
  • the drain pump 6 is advantageously energized when the priming conditions thereof are favourable, whereas the discontinuation in the acceleration of the rotating drum 2 enables the clothes to go on being spin-dried, i.e. to further undergo spin-extraction, while at the same time preventing the water in the washing tub from further increasing to any excessive level.
  • an operational washing or similar phase is carried out in the machine with water let into the washing tub 1 up to the level L1 and, preferably, under a sequence of alternate rotations of the drum 2, as indicated schematically at A, at a rotating speed of approx. 50 rpm.
  • a water discharge phase is then triggered with the drum 2 substantially at a standstill, until the pressure switch 7 then, i.e. at an instant t1, detects a condition indicating that the minimum level L2 has been reached.
  • the drain pump 6 is de-energized and the drum 2 is driven to rotate up to its spin-extraction speed Vs.
  • the drain pump Upon the pressure switch 7 detecting again a level L2 of the water in the washing tub, the drain pump is again de-energized and the drum is again accelerated up to its pre-determined spin-extraction speed Vs.
  • the drum itself will reach said spin-extraction speed Vs thereof within a period of time t1-t3 which is variable depending on and according to the actual operating conditions (such as, in particular, the amount of foam generated in the suds or washing bath).
  • a number of transients may possibly be experienced during which, in the above described manner, the drum 2 is accelerated in a gradual, step-like manner (as indicated schematically at B in Figure 2) up to said spin-extraction speed Vs.
  • the operation of the washing machine can continue in a traditional manner, possibly with a further time-controlled energization of the drain pump 6.
  • the values of the water levels L1, L2 and L3 may be changed in accordance to the requirements, and the means used to implement the control method (such as for instance the pressure switch 7) may be of a different kind.

Landscapes

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

Claims (3)

  1. Procédé pour commander la vitesse de rotation du tambour d'une machine à laver des vêtements lors de la phase d'essorage de celle-ci, dans lequel à la fin d'une phase opératoire exécutée avec un premier niveau d'eau (L1) dans le bac de lavage de la machine, l'eau est évacuée de la machine et le tambour est entraíné en essorage, caractérisé en ce que :
    l'eau est d'abord évacuée du bac (1) dans des conditions sensiblement statiques du tambour (2),
    lorsque l'eau contenue dans le bac (1) descend jusqu'à un niveau minimum (L2), l'évacuation de l'eau est interrompue et le tambour rotatif (2) est accéléré de manière rotative jusqu'à une vitesse d'essorage maximale (Vs), pour permettre aux vêtements de libérer l'eau dans le bac de lavage,
    si l'eau contenue dans le bac (1) monte de nouveau jusqu'à un niveau prédéterminé (L3), elle est de nouveau évacuée du bac et la vitesse de rotation instantanée du tambour (2) est maintenue sensiblement constante,
    lorsque l'eau baisse de nouveau jusqu'au niveau minimum (L2), l'évacuation d'eau est interrompue et le tambour (2) est accéléré vers ladite vitesse d'essorage maximale (Vs) de celui-ci.
  2. Procédé de commande selon la revendication 1, caractérisé en ce que lesdites phases d'évacuation d'eau et lesdits actionnements du tambour rotatif (2) en fonction dudit niveau d'eau minimum (L2) et dudit niveau d'eau prédéterminé (L3) se produisent de manière répétée jusqu'à ce que le tambour atteigne ladite vitesse d'essorage maximale de celui-ci.
  3. Procédé de commande selon la revendication 1, caractérisé en ce que ledit niveau prédéterminé (L3) est inférieur ou égal au niveau de la base (8) du tambour rotatif (2).
EP02015297A 2001-08-10 2002-07-10 Procédé pour commander la vitesse de rotation du tambour d'une machine à laver le linge pendant l'essorage Expired - Lifetime EP1283292B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2001PN000053A ITPN20010053A1 (it) 2001-08-10 2001-08-10 Metodo per controllare la velocita' di rotazione del cesto di una lavatrice per la centrifugazione della biancheria.
ITPN20010053 2001-08-10

Publications (3)

Publication Number Publication Date
EP1283292A2 EP1283292A2 (fr) 2003-02-12
EP1283292A3 EP1283292A3 (fr) 2003-09-03
EP1283292B1 true EP1283292B1 (fr) 2004-09-29

Family

ID=11453296

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02015297A Expired - Lifetime EP1283292B1 (fr) 2001-08-10 2002-07-10 Procédé pour commander la vitesse de rotation du tambour d'une machine à laver le linge pendant l'essorage

Country Status (5)

Country Link
EP (1) EP1283292B1 (fr)
AT (1) ATE278060T1 (fr)
DE (1) DE60201391T2 (fr)
ES (1) ES2230426T3 (fr)
IT (1) ITPN20010053A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2441025B (en) * 2007-06-27 2010-01-06 Mark Anthony James Ward Water saving systems and/or methods
EP2009165A1 (fr) * 2007-06-28 2008-12-31 Bonferraro S.p.A. Cycle de fonctionnement de pompe de drainage d'un appareil de lavage domestique
ITTO20091022A1 (it) * 2009-12-22 2011-06-23 Indesit Co Spa Macchina lavabiancheria con centrifuga
JP2013009882A (ja) * 2011-06-30 2013-01-17 Panasonic Corp ドラム式洗濯機およびそのプログラム
CN115198492A (zh) * 2021-04-09 2022-10-18 青岛海尔洗衣机有限公司 一种洗衣机及控制方法
US20230055113A1 (en) * 2021-08-20 2023-02-23 Whirlpool Corporation Laundry appliance having a fine-particle filter for separating microfibers from process fluids
CN114016246B (zh) * 2021-12-02 2024-04-05 海信冰箱有限公司 洗衣机及其脱水控制方法、装置

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3445877A1 (de) * 1984-12-15 1986-06-26 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Programmsteuervorrichtung fuer eine waschmaschine
DE19908802A1 (de) * 1999-03-01 2000-09-07 Bsh Bosch Siemens Hausgeraete Verfahren zum Schleudern von nasser Wäsche

Also Published As

Publication number Publication date
ITPN20010053A1 (it) 2003-02-10
DE60201391D1 (de) 2004-11-04
DE60201391T2 (de) 2005-11-03
EP1283292A3 (fr) 2003-09-03
EP1283292A2 (fr) 2003-02-12
ES2230426T3 (es) 2005-05-01
ATE278060T1 (de) 2004-10-15

Similar Documents

Publication Publication Date Title
JP6941967B2 (ja) 洗濯機
US7191484B2 (en) Laundry appliance
CN109667103B (zh) 洗衣设备和操作方法
EP0704567B1 (fr) Dispositif pour éviter le balourd dans les machines à laver le linge
KR101029798B1 (ko) 드럼 세탁기의 탈수 제어 방법
GB2155051A (en) Improvements in or relating to clothes washing machines
GB1275968A (en) Washing machine
EP1283292B1 (fr) Procédé pour commander la vitesse de rotation du tambour d'une machine à laver le linge pendant l'essorage
US5647232A (en) Automatically controlled washing machine
JPH05200186A (ja) 洗濯物の重量を測定する方法
EP1266061B1 (fr) Appareil de buanderie
KR20100094889A (ko) 세탁기의 탈수 행정 제어 장치 및 방법
JP4822974B2 (ja) 洗濯機
JP2001062189A (ja) 洗濯機及び洗濯機の振動検知装置
KR0161900B1 (ko) 드럼 세탁기의 탈수 방법
CN113605045B (zh) 衣物处理设备的控制方法
KR960005803B1 (ko) 탈수기
JP2008307419A (ja) 洗濯機
KR19980034621A (ko) 드럼 세탁기의 발란스(Blance) 제어방법
WO2009062920A1 (fr) Machine à laver
US20040200008A1 (en) Method of treating laundry in a washing drum
EP0553645B1 (fr) Dispositif de commande pour l'essorage dans les machines à laver
KR100697062B1 (ko) 세탁기의 포량감지방법
EP0224145B1 (fr) Machine à laver automatique à tambour rotatif
JPH0738917B2 (ja) 全自動洗濯機の制御方法

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK RO SI

17P Request for examination filed

Effective date: 20031125

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040929

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040929

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040929

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040929

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040929

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040929

Ref country code: CH

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040929

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040929

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040929

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040929

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040929

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 60201391

Country of ref document: DE

Date of ref document: 20041104

Kind code of ref document: P

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20041229

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20041229

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20041229

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2230426

Country of ref document: ES

Kind code of ref document: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050710

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050710

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050711

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050731

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

ET Fr: translation filed
26N No opposition filed

Effective date: 20050630

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050228

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20130718

Year of fee payment: 12

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20150828

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140711

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20160721

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20160721

Year of fee payment: 15

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20170710

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20180330

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170710

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20170731

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20190729

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20210721

Year of fee payment: 20

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200710

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 60201391

Country of ref document: DE