EP1096052A2 - Verfahren zur Überwachung der Flusenfilter in einer Waschmachine - Google Patents

Verfahren zur Überwachung der Flusenfilter in einer Waschmachine Download PDF

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Publication number
EP1096052A2
EP1096052A2 EP00120377A EP00120377A EP1096052A2 EP 1096052 A2 EP1096052 A2 EP 1096052A2 EP 00120377 A EP00120377 A EP 00120377A EP 00120377 A EP00120377 A EP 00120377A EP 1096052 A2 EP1096052 A2 EP 1096052A2
Authority
EP
European Patent Office
Prior art keywords
level
water
tub
lint filter
instant
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Withdrawn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
EP00120377A
Other languages
English (en)
French (fr)
Other versions
EP1096052A3 (de
Inventor
Valentino Peressi
Piero Babuin
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 Zanussi Elettrodomestici SpA
Electrolux Zanussi SpA
Original Assignee
Electrolux Zanussi Elettrodomestici SpA
Electrolux Zanussi SpA
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 Zanussi Elettrodomestici SpA, Electrolux Zanussi SpA filed Critical Electrolux Zanussi Elettrodomestici SpA
Publication of EP1096052A2 publication Critical patent/EP1096052A2/de
Publication of EP1096052A3 publication Critical patent/EP1096052A3/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Withdrawn legal-status Critical Current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
    • 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
    • D06F39/081—Safety arrangements for preventing water damage
    • D06F39/082—Safety arrangements for preventing water damage detecting faulty draining operations, e.g. filter blockage, faulty pump
    • 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 
    • D06F33/47—Responding to irregular working conditions, e.g. malfunctioning of pumps 
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/38—Time, e.g. duration
    • 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
    • D06F2105/58—Indications or alarms to the control system or to the user
    • D06F2105/60—Audible signals

Definitions

  • the present invention refers to a method that is capable of being used in an automatic clothes washing machine to the purpose of controlling the lint filter thereof in such a manner as to be able to detect a possible clogged state of the same filter and alert the user of the existence of such a condition.
  • the lint filter in clothes washing machines is generally known to be arranged in the water discharge circuit of the machine, where it is able to retain part of the soil removed from the clothes.
  • the lint filter in clothes washing machines is generally known to be arranged in the water discharge circuit of the machine, where it is able to retain part of the soil removed from the clothes.
  • owing to its limestone contents, such a soil tends to become solid, thereby giving rise to occlusions, ie. clogged states that may well reduce the flow rate of the water being let off down said water discharge circuit of the machine.
  • Such a condition causes the performance capabilities of the concerned washing machine to undergo a gradual deterioration, down to the point at which the lint filter becomes substantially fully clogged, thereby reaching a condition that may even lead to the operating cycle of the machine to be stopped, ie. prevented from going on regularly.
  • the lint filter usually needs to be checked and cleaned periodically.
  • users tend to perform such cleaning operations quite seldom, ie. not so often as actually required.
  • Clothes washing machines are known in the art to be provided with an alarm system which is actuated when, during a phase in which water is discharged from the washing tub thereof, the latter fails to be emptied within a pre-determined, relatively long time interval, that may for instance amount to 10 minutes.
  • a solution is based on a too generic detection criterion that is not directly indicative of an actual clogged condition of the lint filter, since the so detected irregularity can in fact be determined by a number of different causes, such as in particular a failure or defective state of the discharge pump of the machine.
  • a further purpose of the present invention is to provide a method of the above cited kind, which makes it possible for a possible clogged condition of the lint filter to be detected in a simple and reliable manner, regardless of the operating variables of the machine, while discriminating such a clogged condition of the lint filter from other possible irregular conditions of the machine.
  • the method according to the present invention can be implemented in a clothes washing machine having a substantially traditional structure, which comprises a washing tub 4 housing a rotating drum 5 adapted to contain the clothes to be washed.
  • the washing tub 4 is connected to a water discharge circuit 6, to which there are associated a pump (not shown) and a lint filter 7.
  • the clothes washing machine shall be understood as being provided with a plurality of operational and functional parts controlled by a programme sequence control switch or unit, preferably of the electronic type, for carrying out selectable operating cycles.
  • the machine is adapted to carry out at least a rinse phase, in which it lets water into the tub 4 up to a level L3. Said rinse phase is then followed by at least a water discharge phase, in which the water is let off down to a minimum level L0, and may of course be preceded by at least a washing phase performed with water to which detergent has been duly added.
  • a water discharge phase is shown to last from an instant t1 through to an instant t4, in which the water in the tub decreases from the level L3 to said minimum level L0, respectively
  • the present invention is based mainly on the consideration that, with the discharge or drain pump of the machine performing regularly, the time taken for the rinse water to be discharged from the tub 4 is in correlation not only with the extent to which the lint filter 7 is actually clogged, but also with other factors, such as in particular the weight of the clothes, ie. the washload, the distribution of the clothes inside the drum 5, the type of fabrics being handled.
  • the weight of the clothes ie. the washload
  • the distribution of the clothes inside the drum 5 the type of fabrics being handled.
  • the rinse water is substantially free from detergent, so that the related discharge phase t1 ⁇ t4 is substantially not affected by froth.
  • the lint filter 7 can be checked for its actual clogged condition in the following manner.
  • first instant t2 in which the water in the tub 4 decreases to a first level L2 that is substantially equal to or lower than the one corresponding to the bottom (ie. the lowest point) of the rotating drum 5, as well as a second instant t3, in which the water in the tub 4 further decreases to a second reference level L1, which is obviously lower than said first level L2.
  • level sensor means 8, 9 which may for instance be of the pressure-actuated switch type and are adapted to drive a starting input 10 and a switch-off input 11 of a timer 12, respectively.
  • the timer 12 is started when the water in the tub 4 decreases to the level L2 and is switched off when the water then decreases down to the level L1.
  • the timer 12 measures the time interval T that elapses from said first instant t2 to said second instant t3.
  • the timer 12 has an output 13, through which it drives a threshold-value comparator 14 with a signal that is indicative of the measured time interval T.
  • the comparator 14 When the measured time interval T is so detected to exceed a pre-determined threshold value Tr, the comparator 14 is adapted to generate, at an output 15, an alarm signal that is indicative of a condition of substantial clogging of the lint filter 7.
  • an alarm signal is adapted to trigger actuator means 3, which in the most elementary embodiment thereof may comprise optical and/or acoustical indicator means through which the user can be warned of the clogged state of the lint filter 7, which therefore should most suitably be cleaned.
  • the threshold value Tr is set in the comparator 14 at such a value (for instance, approx. 10 to 15 seconds) as to ensure that the above cited alarm signal is generated when the clogging state of the lint filter 7 has not yet reached such an extent as to prevent the rinse water discharge phase from being brought to regular conclusion, ie. when said minimum level L0 is eventually reached.
  • the user is in this way able to take the necessary actions, ie. to clean the filter, when the machine is still capable of operating in a substantially satisfactory manner.
  • the level L1 may be equal to, but preferably it will be slightly higher, for instance by a few millimetres, than the minimum level L0. In any case, the difference between the levels L2 and L1 will preferably be wide enough to allow for an adequately accurate measurement of the time interval T.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Filtration Of Liquid (AREA)
EP00120377A 1999-10-28 2000-09-18 Verfahren zur Überwachung der Flusenfilter in einer Waschmachine Withdrawn EP1096052A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITPN990081 1999-10-28
IT1999PN000081A IT1311716B1 (it) 1999-10-28 1999-10-28 Metodo per controllare il filtro per la filaccia in una lavabiancheria automatica

Publications (2)

Publication Number Publication Date
EP1096052A2 true EP1096052A2 (de) 2001-05-02
EP1096052A3 EP1096052A3 (de) 2001-07-04

Family

ID=11395575

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00120377A Withdrawn EP1096052A3 (de) 1999-10-28 2000-09-18 Verfahren zur Überwachung der Flusenfilter in einer Waschmachine

Country Status (2)

Country Link
EP (1) EP1096052A3 (de)
IT (1) IT1311716B1 (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1862582A3 (de) * 2006-05-30 2008-06-11 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Betreiben einer Waschmaschine
US20090056756A1 (en) * 2007-08-31 2009-03-05 Ro Mon Son Dishwasher and method of controlling a dishwasher
DE102008054837A1 (de) * 2008-12-17 2010-06-24 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zur Behandlung von Wäsche, sowie hierzu geeignete Waschmaschine
EP2455533A1 (de) * 2010-11-22 2012-05-23 Electrolux Home Products Corporation N.V. Verfahren zum Betrieb einer Waschmaschine und Waschmaschine
WO2013185189A1 (en) 2012-06-11 2013-12-19 Whirlpool S.A. Process for controlling the drainage time of a domestic appliance
FR2993166A1 (fr) * 2012-07-12 2014-01-17 Fagorbrandt Sas Procede de commande en fonctionnement d'une machine a laver et machine a laver associee
CN104894806A (zh) * 2014-03-05 2015-09-09 海尔集团技术研发中心 对洗衣机循环水过滤系统中的过滤组件清洗的控制方法
WO2016188263A1 (zh) * 2015-05-27 2016-12-01 青岛海尔洗衣机有限公司 一种絮凝洗衣机及其控制方法
CN109629187A (zh) * 2018-12-11 2019-04-16 青岛海尔洗衣机有限公司 洗衣机排水控制方法
CN111957095A (zh) * 2019-05-20 2020-11-20 青岛海尔洗衣机有限公司 一种过滤装置及其用途
CN112647241A (zh) * 2019-10-12 2021-04-13 青岛海尔洗衣机有限公司 清理提醒方法及装置
EP4445983A1 (de) * 2023-04-14 2024-10-16 BSH Hausgeräte GmbH Computerimplementiertes verfahren zur bestimmung eines zu-stand eines filters in einem wasserführenden haushaltsgerät, computerprogramm und wasserführendes haushaltsgerät

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU6218080A (en) * 1979-09-12 1981-03-26 Thorn Domestic Appliances (Electrical) Ltd. Washing machine having drain blockage indicator
AT388944B (de) * 1986-05-27 1989-09-25 Austria Antriebstech Verfahren und einrichtung zur ueberwachung der funktion einer waschmaschine
KR0153185B1 (ko) * 1995-09-29 1998-12-15 배순훈 세탁기의 필터막힘감지방법

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1862582A3 (de) * 2006-05-30 2008-06-11 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Betreiben einer Waschmaschine
US8617319B2 (en) * 2007-08-31 2013-12-31 Lg Electronics Inc. Dishwasher and method of controlling a dishwasher
US20090056756A1 (en) * 2007-08-31 2009-03-05 Ro Mon Son Dishwasher and method of controlling a dishwasher
DE102008045086B4 (de) 2007-08-31 2019-03-07 Lg Electronics Inc. Geschirrspülmaschine
DE102008054837A1 (de) * 2008-12-17 2010-06-24 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zur Behandlung von Wäsche, sowie hierzu geeignete Waschmaschine
DE102008054837B4 (de) 2008-12-17 2018-09-13 BSH Hausgeräte GmbH Verfahren zur Behandlung von Wäsche
WO2012069288A1 (en) * 2010-11-22 2012-05-31 Electrolux Home Products Corporation N.V. Method of operating a washing machine and washing machine
EP2455533A1 (de) * 2010-11-22 2012-05-23 Electrolux Home Products Corporation N.V. Verfahren zum Betrieb einer Waschmaschine und Waschmaschine
WO2013185189A1 (en) 2012-06-11 2013-12-19 Whirlpool S.A. Process for controlling the drainage time of a domestic appliance
FR2993166A1 (fr) * 2012-07-12 2014-01-17 Fagorbrandt Sas Procede de commande en fonctionnement d'une machine a laver et machine a laver associee
CN104894806A (zh) * 2014-03-05 2015-09-09 海尔集团技术研发中心 对洗衣机循环水过滤系统中的过滤组件清洗的控制方法
WO2015131618A1 (zh) * 2014-03-05 2015-09-11 海尔集团技术研发中心 对洗衣机循环水过滤系统中的过滤组件清洗的控制方法
CN104894806B (zh) * 2014-03-05 2017-01-18 海尔集团技术研发中心 对洗衣机循环水过滤系统中的过滤组件清洗的控制方法
WO2016188263A1 (zh) * 2015-05-27 2016-12-01 青岛海尔洗衣机有限公司 一种絮凝洗衣机及其控制方法
CN109629187A (zh) * 2018-12-11 2019-04-16 青岛海尔洗衣机有限公司 洗衣机排水控制方法
CN111957095A (zh) * 2019-05-20 2020-11-20 青岛海尔洗衣机有限公司 一种过滤装置及其用途
CN112647241A (zh) * 2019-10-12 2021-04-13 青岛海尔洗衣机有限公司 清理提醒方法及装置
EP4445983A1 (de) * 2023-04-14 2024-10-16 BSH Hausgeräte GmbH Computerimplementiertes verfahren zur bestimmung eines zu-stand eines filters in einem wasserführenden haushaltsgerät, computerprogramm und wasserführendes haushaltsgerät

Also Published As

Publication number Publication date
ITPN990081A0 (it) 1999-10-28
EP1096052A3 (de) 2001-07-04
ITPN990081A1 (it) 2001-04-28
IT1311716B1 (it) 2002-03-19

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