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EP1604058A1 - Lave-linge a commande automatique equipe d'un systeme antidebordement - Google Patents

Lave-linge a commande automatique equipe d'un systeme antidebordement

Info

Publication number
EP1604058A1
EP1604058A1 EP00984989A EP00984989A EP1604058A1 EP 1604058 A1 EP1604058 A1 EP 1604058A1 EP 00984989 A EP00984989 A EP 00984989A EP 00984989 A EP00984989 A EP 00984989A EP 1604058 A1 EP1604058 A1 EP 1604058A1
Authority
EP
European Patent Office
Prior art keywords
washing machine
pressure
circulation
sensor device
pump
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Withdrawn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
EP00984989A
Other languages
German (de)
English (en)
Inventor
Edwin Bolduan
Horst Wiemer
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
Publication of EP1604058A1 publication Critical patent/EP1604058A1/fr
Withdrawn legal-status Critical Current

Links

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 
    • D06F33/47—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
    • 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
    • D06F39/083—Liquid discharge or recirculation arrangements
    • 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
    • D06F39/087—Water level measuring or regulating devices
    • 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
    • D06F39/088—Liquid supply arrangements
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18—Status alarms
    • G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold

Definitions

  • the present invention relates, according to the preamble of claim 1, to an automatically controlled washing machine with at least one fresh water line and a lye recirculation system which discharges lye from the bottom of a laundry treatment room and feeds it back over a recirculation line by means of a circulation pump via a feed opening, the feed opening being designed in this way is that during the pumping operation, a dynamic pressure arises in the completely filled circulation line, the lye circulation system further comprising a sensor device which is arranged on the pressure side of the circulation pump and is sensitive to this dynamic pressure, the sensor device of a control device of the washing machine depending on the dynamic pressure a signal transmitted to control a supply valve for fresh water.
  • Such a washing machine is known for example from DE 43 32 225 A1.
  • This known washing machine has a lye recirculation system which discharges lye from a laundry treatment room on the floor and feeds it back to the treatment room above the laundry in the treatment room via a circulation line.
  • the washing machine also has at least one fresh water supply line which can be opened or closed by means of a controllable valve.
  • a sensor device is arranged in the lye circulation system, which is suitable for determining a volume flow in the conveying direction of the pump, and the control device of the washing machine is designed such that when the sensor device signals a lack of the volume flow, the valve is actuated in such a way that fresh water is fed.
  • the Sensor device on the pressure side of the pump is coupled to the circulation line, and the feed opening between the circulation line and the laundry treatment room is designed such that a back pressure is present in the completely filled circulation line during pump operation.
  • the sensor device is accordingly sensitive to this dynamic pressure and supplies the control device of the washing device with corresponding signals for opening and closing the valve of the fresh water supply.
  • the sensor device emits a positive signal when the lye circulation system is completely filled and a back pressure has built up in front of the feed opening.
  • the control device blocks the valve for the fresh water supply. If the dynamic pressure is insufficient, the sensor device emits a negative signal to the control device, which causes the solenoid valve to open.
  • the fresh water supply is switched on and the missing amount of water is added.
  • a disadvantage of this prior art is that if various elements, such as the solenoid valve, fail, no safety measures are installed that prevent the washing machine from overflowing.
  • devices are known from the prior art which recognize the exceeding of a defined amount of water in the laundry treatment room and then initiate safety measures, such as switching on an emptying pump or closing an additional safety valve.
  • This level of security is identified e.g. via pressure switches or via sensors that can be found behind an opening at a correspondingly high point in the water supply system.
  • the object of the invention is to create a washing machine with a lye-recirculating system which has an overflow protection in a simple and inexpensive manner and is easy to maintain.
  • an additional safety valve is installed in the fresh water line, which, in the case of a corresponding sensor signal, of the invention
  • Overflow protection is closed by the control device of the washing machine. This prevents fresh water from the fresh water line from being fed unhindered into the laundry treatment room if the magnetic valve is defective.
  • an emptying pump is provided as an additional safety measure, which can drain off lye in the floor area of the laundry treatment room. If there is too much water in the laundry treatment room, the drain pump can be switched on via the control device of the washing machine.
  • the senor device is advantageously designed as a pressure switch.
  • pressure switches are commercially available and easy to install.
  • the pressure switch has two contacts that react to different preset pressure levels.
  • a different contact is used than when measuring the static pressure of the amount of water in the laundry treatment room for the purpose of overflow protection.
  • a single contact for measuring dynamic pressure and static pressure is provided in the pressure switch.
  • the sensor level for activating safety measures and for closing the valve for the fresh water supply therefore only has to be set once to a fixed value.
  • control device of the washing machine is programmed such that the circulating pump is switched off at periodic time intervals for a predetermined period of time. It is thus automatically ensured that the elements of the overflow protection at regular intervals
  • the single figure shows a schematic representation of an embodiment of the washing machine according to the invention.
  • the washing machine 17 has a tub as a laundry treatment room 1, in which a washing drum 2 is rotatably mounted horizontally. In the washing drum 2, laundry 3 and driver 4 for rearranging the laundry parts 3 when rotating the drum 2 can be seen.
  • the wash liquor is introduced into the laundry treatment room 1 via a fresh water line 5 and a detergent container 6.
  • the liquor circulation system 16 has a circulation line 9, in which a circulation pump 10 and a sensor device 12 are arranged. The vacuumed
  • Wash liquor is returned to the laundry treatment room 1 from above via the circulation line 9 through a feed opening 13.
  • An additional heating device 11 can be arranged on the pressure side of the circulation pump 10 in the circulation line 9.
  • the sensor device 12 integrated in the lye rolling system 16 is connected to the control device 8 of the washing machine 17.
  • the control device 8 is suitable, inter alia, for opening and closing the valve 7 for the supply of fresh water.
  • a further safety valve 14 can be upstream of the valve 7 in the fresh water line 5.
  • both the circulation pump 10 and the drain pump 15 and the safety valve 14 can be controlled by the control device 8 of the washing machine 17.
  • the sensor device 12 is sensitive to this dynamic pressure and, depending on the level of the dynamic pressure, forwards a signal to the control device 8 of the washing machine 17 for opening or closing the valve 7 of the fresh water line 5. If there is sufficient dynamic pressure, the valve 7 is closed; if the circulation line 9 contains little or no alkali, the valve 7 is opened. In this way, the alkali located in the laundry treatment room 1 is limited to the absolutely necessary amount.
  • the circulation line 9 fills with the lye present in the laundry treatment room 1. In this way it forms in the
  • Circulation line 9 is a static water pressure which rises with the level of the water in the laundry treatment room 1 and is also recognized by the sensor device 12. If this static pressure exceeds a presettable safety level, i. H. If the static pressure corresponds to a critical amount of water in the laundry treatment room 1, the sensor device 12 sends a signal to the
  • As a safety measure closing an additional valve 14 in the fresh water line 5 and / or switching on the drain pump 15 are provided.
  • the circulation pump 10 is switched off, it can be ensured by means of the sensor device 12 integrated in the lye circulation system 16 that the washing machine 17 does not overflow due to a technical defect, such as the inoperability of the valve 7.
  • the circulation pump 10 is usually switched off and the change in the limit pressure necessary in the case of two-contact pressure switches 12 is usually carried out by the central one
  • the control device 8 regularly switches off the circulation pump 10 for short periods in which the function of the alkali circulation system 16 is interrupted and the sensor device 12 via the dynamic pressure which arises in the circulation line 9 Security measures for
  • the central control device 8 processes the signals supplied by the sensor device 12 and immediately causes the safety valve 14 to close and / or the emptying pump 15 to be switched on.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Abstract

L'invention concerne un lave-linge à commande automatique (17) comportant au moins une conduite d'eau fraîche (5) et un système de recirculation de lessive (16), qui évacue la lessive du fond d'une chambre de traitement de linge (1) et la réachemine à cette dernière par le haut, au moyen d'une pompe de recirculation (10), par l'intermédiaire d'une conduite de recirculation (9), à travers une ouverture d'alimentation (13). Cette dernière (13) est conçue de sorte que, pendant le fonctionnement de la pompe, une pression dynamique s'établit dans la conduite de recirculation (9) entièrement remplie. Le système de recirculation de lessive (16) présente en outre une unité de détection (12) qui est placée sur le côté refoulement de la pompe de recirculation (10), est sensible à la pression dynamique produite et transmet un signal, en fonction de la pression dynamique, à l'unité de commande (8) du lave-linge (17) pour que cette dernière commande une soupape d'alimentation en eau fraîche (5). L'invention vise à empêcher, de manière simple et économique, un débordement du lave-linge (17). Elle vise également à permettre une maintenance facile de ce dernier. A cet effet, l'unité de détection (12) reconnaît en outre une pression statique qui s'établit dans la chambre de traitement de linge (1) lors de l'arrêt de la pompe de recirculation (10) et par conséquent dans la conduite de recirculation (9). En outre, cette unité de détection (12) transmet un signal à l'unité de commande (8) pour que cette dernière mette en oeuvre des mesures de sécurité lorsque la pression statique dépasse un niveau de sécurité prédéterminable.
EP00984989A 1999-12-14 2000-11-08 Lave-linge a commande automatique equipe d'un systeme antidebordement Withdrawn EP1604058A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19960265 1999-12-14
DE19960265A DE19960265B4 (de) 1999-12-14 1999-12-14 Automatisch gesteuerte Waschmaschine mit Überlaufsicherung
PCT/EP2000/011040 WO2001044557A1 (fr) 1999-12-14 2000-11-08 Lave-linge a commande automatique equipe d'un systeme antidebordement

Publications (1)

Publication Number Publication Date
EP1604058A1 true EP1604058A1 (fr) 2005-12-14

Family

ID=7932620

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00984989A Withdrawn EP1604058A1 (fr) 1999-12-14 2000-11-08 Lave-linge a commande automatique equipe d'un systeme antidebordement

Country Status (6)

Country Link
US (1) US6698254B2 (fr)
EP (1) EP1604058A1 (fr)
JP (1) JP2003516837A (fr)
KR (1) KR100734674B1 (fr)
DE (1) DE19960265B4 (fr)
WO (1) WO2001044557A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
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KR100504501B1 (ko) * 2003-04-14 2005-08-02 엘지전자 주식회사 증기분사식 드럼세탁기의 세탁방법
EP1475472A3 (fr) * 2003-04-25 2008-10-22 Lg Electronics Inc. Dispositif de mise en circulation d'eau de lavage pour les machines à laver et méthode de commande de celui-ci
KR101290460B1 (ko) * 2006-10-09 2013-07-26 엘지전자 주식회사 드럼 세탁기
US20090265863A1 (en) * 2008-04-24 2009-10-29 General Electric Company Adaptive drain algorithm for clothes washers
JP5147082B2 (ja) * 2009-12-01 2013-02-20 株式会社ハッピー 洗濯装置
EP2535454B1 (fr) * 2011-06-14 2021-05-12 Electrolux Home Products Corporation N.V. Machine à laver
CN103290650B (zh) * 2012-02-24 2017-09-12 博西华电器（江苏）有限公司 洗衣机的控制方法
DE102019209149A1 (de) * 2019-06-25 2020-12-31 BSH Hausgeräte GmbH Wäschepflegegerät mit einer Pumpvorrichtung und ein Verfahren zum Betreiben des Wäschepflegegeräts

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US3729051A (en) * 1971-08-17 1973-04-24 G Mannion Process fluid flow regulation systems
JPS5496266A (en) * 1978-01-13 1979-07-30 Hitachi Ltd Drainage device for washing machine
DE2923906C2 (de) * 1979-06-13 1981-01-08 Basf Farben + Fasern Ag, 2000 Hamburg Verfahren und Vorrichtung zur Lackversorgung von Lackierstraßen
US4468170A (en) * 1980-07-11 1984-08-28 Beta Technology, Inc. Low level indicator
JPS5737496A (en) * 1980-08-14 1982-03-01 Matsushita Electric Industrial Co Ltd Washing machine doubling as hydroextracting
US6200468B1 (en) * 1980-09-29 2001-03-13 Sanitaire Corporation Aeration system apparatus with source of in situ cleaning agent and pressure monitoring connection for submerged diffuser
IT1246260B (it) * 1990-07-03 1994-11-17 Zanussi Elettrodomestici Dispositivo di misurazione del carico dell'acqua per macchine lavatrici.
DE4026838A1 (de) * 1990-08-24 1992-03-05 Bosch Siemens Hausgeraete Haushalt-geschirrspuelmaschine
ES2208644T3 (es) * 1993-06-07 2004-06-16 Bsh Bosch Und Siemens Hausgerate Gmbh Lavadora controlada automaticamente.
DE4332225B4 (de) * 1993-06-07 2006-09-28 BSH Bosch und Siemens Hausgeräte GmbH Automatisch gesteuerte Waschmaschine
KR0129222B1 (ko) * 1994-02-03 1998-04-09 구자홍 세탁기의 배수펌프 공회전 방지장치 및 그 방법
JP3170160B2 (ja) * 1994-06-24 2001-05-28 シャープ株式会社 ドラム式洗濯機
KR0156209B1 (ko) * 1995-01-04 1998-12-15 이헌조 세탁기의 오존가스 발생장치
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Also Published As

Publication number Publication date
JP2003516837A (ja) 2003-05-20
US20020178764A1 (en) 2002-12-05
WO2001044557A1 (fr) 2001-06-21
KR100734674B1 (ko) 2007-07-02
DE19960265A1 (de) 2001-06-21
DE19960265B4 (de) 2007-04-12
US6698254B2 (en) 2004-03-02
KR20020062969A (ko) 2002-07-31

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