EP1108809A1 - Dispositif et procédé pour mesurer le poids dans une machine à laver - Google Patents

Dispositif et procédé pour mesurer le poids dans une machine à laver Download PDF

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Publication number
EP1108809A1
EP1108809A1 EP00124851A EP00124851A EP1108809A1 EP 1108809 A1 EP1108809 A1 EP 1108809A1 EP 00124851 A EP00124851 A EP 00124851A EP 00124851 A EP00124851 A EP 00124851A EP 1108809 A1 EP1108809 A1 EP 1108809A1
Authority
EP
European Patent Office
Prior art keywords
laundry
electrode
tub
jacket wall
measuring
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.)
Granted
Application number
EP00124851A
Other languages
German (de)
English (en)
Other versions
EP1108809B1 (fr
Inventor
Uwe Böduel
Walter Sams
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 EP1108809A1 publication Critical patent/EP1108809A1/fr
Application granted granted Critical
Publication of EP1108809B1 publication Critical patent/EP1108809B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/18—Condition of the laundry, e.g. nature or weight
    • 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
    • D06F2103/26—Imbalance; Noise 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
    • D06F2105/58—Indications or alarms to the control system or to the user
    • D06F2105/60—Audible signals

Definitions

  • the invention relates to a device for measuring the load in a laundry treatment device, in which a laundry drum is rotatably mounted. Likewise relates the invention relates to a method for measuring the load.
  • DE 37 36 809 A1 discloses a laundry treatment device, i. H. a household washing machine or spin dryer, known, for measuring the drum load Measuring equipment is available.
  • the measurement is based on the fact that a torque required to accelerate a drum loaded with laundry is measured directly. This should cause disturbances such as V-belt losses to be excluded.
  • the known method therefore presupposes that the laundry treatment device already is put into operation in order to be able to measure the laundry weight.
  • the loading of a household washing machine is thereby measured that the tub is suspended on suspension springs, their travel depends on the spring load, so that the springs according to the weight of the tub be deflected. Since only the total weight of the tub, laundry drum and laundry load is measured is the relative change in spring deflection by loading and unloading the laundry relatively low.
  • this object is achieved in a device of the type mentioned solved in that a first, formed by a wall of the laundry drum or arranged on the wall of the laundry drum, at a first electrical potential lying electrode and a second, fixed at a second electrical potential lying electrode are arranged at a short distance from each other the distance between the electrodes can be changed by loading or unloading, and that a capacitance corresponding to a distance between the electrodes by a measuring device is measurable.
  • two on different electrical Potential electrodes that are spaced apart by a dielectric are, form a capacitor whose capacitance can be measured, for example by measuring the reactance generated by the capacitor in an in an AC circuit or a Wheatstone bridge.
  • the capacitance is inversely proportional to the distance between the electrodes. So if the laundry drum is loaded by the loading of laundry and itself the laundry drum lowers, the distance between the jacket wall decreases the washing drum and one outside the washing drum within the height of the shaft driving the laundry drum fixed electrode. If the Electrode for example above the washing drum the height of the washing drum driving shaft is arranged, the distance increases, and the capacity of the capacitor formed by the two electrodes is reduced. If the second electrode fixed below the height of the drive shaft of the laundry drum the capacity increases when loaded. The second electrode is advantageous arranged either below or above the laundry drum.
  • a plurality of second electrodes are preferably also used, for example both above and below the laundry drum, each with the laundry drum as interact with the first electrode. Then if the individual capacitors in parallel the capacitors of the individual capacitors add up, and the measurement accuracy in measuring a change in weight becomes even greater.
  • the washing drum is made of metal, the washing drum itself forms the electrode. If the washing drum is made of plastic, it can be electrically conductive Arrange the ring on the outer surface of the laundry drum, as it is already the case with a dryer is used as a sliding contact for measuring laundry moisture. A Such an annular electrode can then additionally be used as the first electrode for measurement the load in conjunction with at least one second electrode by using of the capacitive effect.
  • the weight of the laundry load can be before Determine the program start of the laundry treatment device.
  • a is also preferred Display element is provided, which is integrated for example in the control panel and either as a numerical display or as an illuminated display, for example in the form of a Light bar works.
  • the laundry load obtained by means of the device according to the invention can be also use in a control device provided in the laundry treatment device, which can be fed from the measuring device, so that the treatment of the filled Linen items are made taking into account the weight of the laundry is, for example, the measurement of the amount of water, the detergent, the mechanical Treatment in a washing machine or to calculate the drying time in a tumble dryer, provided data on the moisture content in the laundry are available.
  • the measuring device is connected to the control device, it can also directly be integrated into it.
  • a tub 1 consists of a non-conductive material, for example Plastic, and carries in its rear wall 2 a shaft journal 3 of a laundry drum 4.
  • the shaft journal 3 is via roller bearings 5, 6 in a received by the rear wall 2 Bearing sleeve 7 stored.
  • the tub 1 carries an electrode 9 on the outside of a jacket wall 8 is connected to a voltage source and is at an electrical potential.
  • the Electrode 9 is on the jacket wall 8 of a jacket wall 10 of the laundry drum 4th Cut.
  • the jacket wall 10 is preferably grounded and forms a second electrode. Form due to the potential difference between the electrode 9 and the jacket wall 10 this a capacitor, the electrode 9 and the jacket wall 10 by a Dielectric are separated from each other.
  • the dielectric material is the air as well as that Plastic material from which the jacket wall 8 is made.
  • the jacket wall 8 consists of a metal, that is to say is electrically conductive, it can be used instead of the electrode 9 as an electrode, provided for an electrical separation between the washing drum 4 (consisting of a metal) and the jacket wall 8 is taken care of.
  • the rear wall 2 of the tub 1 is made of plastic.
  • a laundry drum can also be used Insert 4 made of plastic, provided that 4 or a separate electrode is arranged on the outside of the washing drum 4 with the jacket wall 8, if this serves as an electrode, or with the electrode 9 as a capacitor works.
  • Insert 4 made of plastic provided that 4 or a separate electrode is arranged on the outside of the washing drum 4 with the jacket wall 8, if this serves as an electrode, or with the electrode 9 as a capacitor works.
  • the use of a ring-shaped on the jacket wall is particularly suitable a drum arranged in a tumble dryer.
  • Electrodes can also be used provide on the outer or inner wall of the jacket wall 8.
  • the arrangement of electrodes on the outer or inner wall of the Sheath wall 10 if the sheath wall 10 consists of a non-conductive material.
  • a further electrode 9 ′ can also be provided on the side of the laundry drum 4 opposite the electrode 9, that is to say on the underside of the tub 1 on its jacket wall 8, in which case then by reducing the distance between the jacket wall 8 and the jacket wall 10 Loading of the laundry drum occurs a positive change in capacity.
  • the electrodes 9 and 9 ' can then also be connected in parallel to one another in order to measure the sum of the two changes in capacitance, so that a smaller measurement error occurs.
  • the measuring method described here is not only suitable for static measurements with Loading or unloading the laundry drum 4, but also for measuring unbalance Rotation of the laundry drum 4. If around the circumference of the tub 2 several electrodes 9, 9 'are provided, which are preferably equally spaced distribute on the outer circumference or the inner circumference of the jacket wall 8, can by measuring the changes in capacitance that occur with unbalance Detect position of the occurrence of the unbalance, so that, for example, after the Imbalances have been detected, the laundry can be redistributed to, for example, afterwards to start a new spin cycle.
  • the electrode 9 is connected to a measuring device 12 via a line 11; this is in turn connected to a control device 16.
  • the electrically conductive jacket wall 10 of the laundry drum 4 is also via an electrically conductive bottom wall 13 the shaft journal 3, which consists of a metal, a sliding contact 14 and a line 15 connected to the measuring device 12. There is therefore the potential difference between the electrode 9 and the jacket wall 10 as an electrical signal and is the Control device 16 supplied.
  • the signals are preferably stored in a memory 17 which is assigned to the control device 16 is stored in order to make a comparison between different capacitance values with corresponding states of the laundry drum 4 to enable. From the data available in the control device 16 customer service information can also be obtained; there can be alarm displays or generate error displays that are displayed, for example, on the control panel become.
  • the capacitance values can also be used for laundry treatment to influence in the laundry treatment device. For example, from the capacity value or a change in capacity and the information that can be extracted from it conclude about the weight of the laundry or change in weight of the laundry drum 4, how much water, detergent etc. are used for the washing process have to. By comparing currently measured capacity values with stored capacity values distance changes between the washing drum 4 and grasp the tub.
  • an electrical contact can also be made on the outer bearing shell of the ball bearing 6 and then via the line 15 with the Control device 16 may be connected.
  • the laundry machine is on Tumble dryer, it can be determined which drying time is necessary, if the Moisture content of the laundry is known.
  • a prerequisite for the use of the invention is a laundry drum mounted on one side, which is preferably mounted horizontally, but the invention can also be then use when the washing drum 4 is inclined to the horizontal, for example by up to 15 °.
  • the single electrode 9 several can also be used Electrodes side by side on the outer circumference or the inner circumference of the jacket wall Arrange 8. The same applies to the arrangement of several electrodes on or within the jacket wall 10, provided the jacket wall 10 is made of a non-conductive Material exists. All electrodes can also be designed as ring-shaped electrodes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
EP00124851A 1999-12-14 2000-11-14 Dispositif et procédé pour mesurer le poids dans une machine à laver Expired - Lifetime EP1108809B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19960310 1999-12-14
DE19960310A DE19960310A1 (de) 1999-12-14 1999-12-14 Vorrichtung und Verfahren zur Messung der Beladung in einem Wäschebehandlungsgerät

Publications (2)

Publication Number Publication Date
EP1108809A1 true EP1108809A1 (fr) 2001-06-20
EP1108809B1 EP1108809B1 (fr) 2004-08-18

Family

ID=7932642

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00124851A Expired - Lifetime EP1108809B1 (fr) 1999-12-14 2000-11-14 Dispositif et procédé pour mesurer le poids dans une machine à laver

Country Status (4)

Country Link
EP (1) EP1108809B1 (fr)
AT (1) ATE274091T1 (fr)
DE (2) DE19960310A1 (fr)
ES (1) ES2226688T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1988209A2 (fr) * 2007-04-30 2008-11-05 Electrolux Home Products Corporation N.V. Procédé pour la commande d'un sèche-linge
WO2010123197A1 (fr) * 2009-04-22 2010-10-28 Lg Electronics Inc. Machine à laver et procédé de commande correspondant
DE102015204331B4 (de) 2015-03-11 2019-06-19 BSH Hausgeräte GmbH Haushaltsgerät zur Pflege von Wäschestücken mit einer Messvorrichtung an einer Dichtungsmanschette

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10104682B4 (de) * 2001-02-02 2004-09-09 Henno Schotten Verfahren zur Messung von Unwucht und Beladung bei Waschmaschinen
DE102008031774B4 (de) * 2008-07-04 2010-04-15 Ident Technology Ag Sensoreinrichtung zur Bestimmung der Menge und/oder des Feuchtegrads von Wäsche in einem Wäschetrockner
DE102014218278A1 (de) * 2014-09-12 2016-03-17 BSH Hausgeräte GmbH Verfahren zum Betreiben eines Hausgeräts
DE102018004188B4 (de) * 2018-05-24 2019-12-05 Diehl Ako Stiftung & Co. Kg Wäschebehandlungsgerät

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411143A (en) * 1980-07-02 1983-10-25 Bosch-Siemens Hausgerate Gmbh Laundry treatment machine
US4742698A (en) * 1985-05-16 1988-05-10 Kabushiki Kaisha Toshiba Washer-dehydrator
US5165260A (en) * 1989-05-03 1992-11-24 Bsg-Schalttechnik Gmbh & Co., Kg Washing-machine
US5497638A (en) * 1995-06-19 1996-03-12 General Electric Company System based on inductive coupling for sensing loads in a washing machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3736809A1 (de) * 1987-10-30 1989-05-11 Licentia Gmbh Verfahren und vorrichtung zur trommelbeladungsmessung, insbesondere bei haushaltwaschmaschinen und waescheschleudern
DE4431846C2 (de) * 1994-09-07 2001-02-15 Diehl Ako Stiftung Gmbh & Co Verfahren zum beladungsabhängigen Steuern und/oder Regeln einer Waschmaschine oder eines Wäschetrockners
DE19736422A1 (de) * 1997-08-21 1999-02-25 Bosch Siemens Hausgeraete Verfahren zur Bestimmung der Beladungsmenge eines Wäschetrockners
DE19750248C1 (de) * 1997-11-13 1999-03-04 Miele & Cie Waschmaschine mit einer Einrichtung zur Ermittlung des Wäschegewichts
DE19828207A1 (de) * 1998-06-25 1999-12-30 Miele & Cie Verfahren zur Ermittlung des Restfeuchtegehaltes der Wäsche in einem Wäschetrockner sowie Vorrichtung zur Durchführung des Verfahrens

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4411143A (en) * 1980-07-02 1983-10-25 Bosch-Siemens Hausgerate Gmbh Laundry treatment machine
US4742698A (en) * 1985-05-16 1988-05-10 Kabushiki Kaisha Toshiba Washer-dehydrator
US5165260A (en) * 1989-05-03 1992-11-24 Bsg-Schalttechnik Gmbh & Co., Kg Washing-machine
US5497638A (en) * 1995-06-19 1996-03-12 General Electric Company System based on inductive coupling for sensing loads in a washing machine

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1988209A2 (fr) * 2007-04-30 2008-11-05 Electrolux Home Products Corporation N.V. Procédé pour la commande d'un sèche-linge
WO2008131876A2 (fr) * 2007-04-30 2008-11-06 Electrolux Home Products Corporation N.V. Procédé de contrôle d'un sèche-linge à culbutement
EP1988209A3 (fr) * 2007-04-30 2008-11-19 Electrolux Home Products Corporation N.V. Procédé pour la commande d'un sèche-linge
WO2008131876A3 (fr) * 2007-04-30 2008-12-18 Electrolux Home Prod Corp Procédé de contrôle d'un sèche-linge à culbutement
US8234796B2 (en) 2007-04-30 2012-08-07 Electrolux Home Products Corporation N.V. Method of controlling a tumble laundry drier
US8844161B2 (en) 2007-04-30 2014-09-30 Electrolux Home Products Corporation N.V. Method of controlling a tumble laundry drier
WO2010123197A1 (fr) * 2009-04-22 2010-10-28 Lg Electronics Inc. Machine à laver et procédé de commande correspondant
DE102015204331B4 (de) 2015-03-11 2019-06-19 BSH Hausgeräte GmbH Haushaltsgerät zur Pflege von Wäschestücken mit einer Messvorrichtung an einer Dichtungsmanschette

Also Published As

Publication number Publication date
DE19960310A1 (de) 2001-06-28
ES2226688T3 (es) 2005-04-01
DE50007457D1 (de) 2004-09-23
EP1108809B1 (fr) 2004-08-18
ATE274091T1 (de) 2004-09-15

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