EP1878826A1 - Verfahren zur Dosierung von Waschmittel in einer Waschmaschine - Google Patents

Verfahren zur Dosierung von Waschmittel in einer Waschmaschine Download PDF

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Publication number
EP1878826A1
EP1878826A1 EP07112101A EP07112101A EP1878826A1 EP 1878826 A1 EP1878826 A1 EP 1878826A1 EP 07112101 A EP07112101 A EP 07112101A EP 07112101 A EP07112101 A EP 07112101A EP 1878826 A1 EP1878826 A1 EP 1878826A1
Authority
EP
European Patent Office
Prior art keywords
laundry
detergent
dosing
phase
load
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
EP07112101A
Other languages
English (en)
French (fr)
Other versions
EP1878826B1 (de
Inventor
Carène Tissot
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.)
FagorBrandt SAS
Original Assignee
Brandt Industries SAS
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 Brandt Industries SAS filed Critical Brandt Industries SAS
Priority to PL07112101T priority Critical patent/PL1878826T3/pl
Publication of EP1878826A1 publication Critical patent/EP1878826A1/de
Application granted granted Critical
Publication of EP1878826B1 publication Critical patent/EP1878826B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • D06F33/37—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of metering of detergents or additives
    • 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
    • D06F2101/00—User input for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • 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
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/04—Quantity, e.g. weight or variation of 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
    • D06F2103/20—Washing liquid condition, e.g. turbidity
    • 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
    • D06F2105/42—Detergent or additive supply

Definitions

  • the present invention relates on the one hand to a washing machine.
  • It also relates to a method for dosing detergent in a washing machine so as to automatically dose the amount of detergent necessary for washing a load of laundry, and secondly, a machine adapted to implement the method dosing detergent according to the invention.
  • This method also makes it possible to recognize the load of laundry without using a mass sensor.
  • the invention relates to washing machines, and more particularly the machines for domestic use.
  • washing machines have the disadvantage of not allowing an automatic dosing of the detergent according to the load of laundry introduced into the drum.
  • Washing machines are also known comprising a device for measuring the mass of the laundry load introduced into the drum.
  • the mass measuring device requires on the one hand at least one weighing sensor and on the other hand means for measuring the load of laundry introduced into the drum taking into account the effects of the suspension elements of the washing tub.
  • washing machines have the disadvantage of measuring the mass of the laundry load before the start of the wash cycle.
  • Useful means for mass measurement are expensive and complex.
  • the function of mass measurement of the laundry load adds an extra cost to the washing machines.
  • the present invention aims to solve the aforementioned drawbacks and to provide a washing machine with a laundry detergent dosing method for automatically dosing the detergent during a wash cycle quickly and reliably according to the load of laundry introduced into the drum.
  • the present invention is directed to a method for dosing detergent in a washing machine comprising a tank filled with liquid from a water inlet, a rotary drum for loading laundry, means for ordering a laundry program.
  • a first dose of detergent is dosed and dispensed at the beginning of a wash cycle and at the same time as the introduction of water into the washing tub of the machine.
  • This first dose of detergent takes into account the different operating parameters of the washing machine.
  • the control means of said machine to define the partial load of laundry according to the selected washing program.
  • the laundry machine adjusts the amount of detergent if the load of laundry introduced into the drum is greater than the laundry load preset by the machine control means.
  • the main parameters for determining the amount of detergent to be dosed and dispensed for the first and second dosing and dispensing phases of detergent are the water hardness, the level of soiling of the laundry load and the amount of laundry .
  • the water hardness parameter can be saved by the user during the installation of the washing machine.
  • the soil level parameter can be defined by the user by selecting an element of the control means of the machine or be defined by at least one sensor, such as for example a turbidity or conductivity sensor.
  • the information regarding the amount of laundry is important and changes the washing cycle according to the mass of the laundry load introduced into the drum.
  • the amount of detergent to be dosed and dispensed is variable depending on the amount of laundry introduced into the drum.
  • the secondary parameters that can be taken into consideration in determining the amount of detergent to be dosed and dispensed for the first and second dosing and dispensing phases of detergent are the nature of the laundry items and the type of wash cycle.
  • the type of washing cycle is essentially characterized by its duration.
  • a cycle of short duration must make it possible to dissolve the detergent in the washing bath and to adapt the rinsing phases of the laundry.
  • the Applicant has found that the detergent must be introduced at the earliest during a wash cycle to achieve optimum efficiency and the shortest possible cycle time.
  • the introduction of water and detergent into the wash tub must be carried out together.
  • the detergent has a wetting effect for the laundry load and therefore the mixture of water and detergent impregnates faster and more efficiently in the laundry load than when the water is introduced alone into the wash tub.
  • the laundry load recognition phase has a duration ranging from 5 minutes to 15 minutes. At the end of the laundry load recognition phase, the optimum amount of water was introduced into the wash tub.
  • the detergent dosing method comprises an additional water introduction phase in the washing tub simultaneously with the second dosage and detergent dispensing phase.
  • an additional amount of water is added at the same time as the second dosage and detergent dispensing phase.
  • the amount of additional water only substantially changes the amount of water used during the washing cycle of the washing machine. This amount of water remains close to the optimum amount of water to perform a wash cycle.
  • the second phase of dosing and dispensing detergent is performed before a heating phase of the washing bath of the washing tub.
  • the additional amount of detergent introduced during the second dosage and detergent dispensing step is performed prior to the heating phase of the wash bath of the wash tub.
  • the second detergent dosing and dispensing step is performed at the beginning of the heating phase of the washing bath of the washing tub.
  • the laundry recognition phase is performed by a laundry mass detection means based on the level of water absorption by the laundry load.
  • This means of detecting the mass of laundry based on the level of water absorption by the load of laundry enables the machine to measure directly the mass of the laundry during the washing cycle.
  • the user does not need to indicate a quantity of laundry by the control means.
  • the amount of laundry determined by the laundry mass detecting means based on the level of water absorption by the laundry load is reliable and accurate.
  • the mass measurement of the laundry load is carried out without a weighing sensor adding an additional cost to the washing machine.
  • the control means of the washing machine can deduce the nature of the load of laundry, for example 100% cotton textile or 60% cotton textile with 40% synthetic textile.
  • the method of programming the washing machine can be different since the washing cycle is selected without specifying the nature of the textile load of laundry. The washing machine is thus able to automatically determine the constitution of the load of laundry.
  • the first phase of dosing and dispensing of detergent is carried out during the initial phase of filling the wash tank with water.
  • the dosing and dispensing of detergent at the earliest during a washing cycle and in particular during the initial phase of water filling of the washing tub is essential to recognize as soon as possible the load of laundry introduced in drum and minimize the amount of water required for the wash cycle.
  • the dosing and dispensing of the detergent during the initial water-filling phase of the washing tub makes it possible to ensure the laundry load recognition phase and to deliver the detergent from a detergent box to the washing tank. washing.
  • the first and second dosing and dispensing phases of detergent are performed at the beginning of a wash cycle for a predetermined laundry partial load depending on the selected wash program.
  • the predefined linen partial load corresponds to a half load of laundry.
  • the Applicant considers that the user has introduced into the drum at least the equivalent of the predetermined laundry load of the selected washing program, which may be the order of the half load of laundry.
  • the first dose of detergent is delivered during the first phase of dosing and dispensing detergent taking into account the various parameters and setting the mass of the load of laundry to a pre-defined load of linen according to predetermined values by the Applicant .
  • a small amount of additional water is introduced into the wash tub due to the operating principle of the detergent delivery.
  • the detergent is poured into the wash tub by a flow of water passing through the detergent box of the washing machine.
  • This washing machine may be a household washing machine or a washer-dryer.
  • an overhead loading machine has been illustrated.
  • the present invention applies to all types of washing machine, including front-loading.
  • such a washing machine 1 comprises a washing tub 2 and a drum 3 rotatably mounted, here along a horizontal axis of rotation 5, inside said washing tub 2.
  • a door located on the upper face of the machine 1 allows the user to access the inside of the tank 2 and the drum 3 to introduce or remove the laundry.
  • a control panel 4 is also provided in the upper part of the machine 1.
  • the washing machine 1 comprises a water level regulating device (not shown).
  • This water regulating device can be, in a known manner, constituted by an air pressure switch whose bell-shaped compression chamber is disposed in the tank 2 of the appliance 1.
  • the diaphragm of the pressure switch which moves under the effect of pressure variations relative to the atmosphere acts with an electrical contact that gives the level signal reached, the automation.
  • This level reached is also not necessarily chosen to correspond to a volume of water available at the bottom of tank 2 sufficient to operate the apparatus 1 in a normal way (or nominal).
  • a variant of the invention is to match the level reached with the volume of water at the bottom of tank 2 just necessary, and sufficient, to a good operation of the device 1.
  • the device for regulating the water level This makes it possible to obtain a determined level necessary to protect the laundry from mechanical action and to optimize water consumption.
  • the washing machine 1 also comprises a drain pump for renewing the liquid at the bottom of the tank 2.
  • the lower part of the tank 2 comprises a recycling pump provided with a water guide pipe discharged by the bearing of the drum 4 and a drain pump connected to a discharge pipe. Filters and micro-filters make it possible to recycle the clean water to supply the drum 3 in a closed circuit so as to save the volume of water introduced from the outside.
  • washing and rinsing cycles are sequenced in baths by emptying operations during which only the drain pump is actuated.
  • the washing machine comprises all the equipment and means necessary for the implementation of a conventional washing process in such a rotary drum machine.
  • the present invention is directed to a method for dosing detergent in a washing machine 1 comprising a tank 2 filled with liquid from a water inlet, a rotary drum 3 for loading laundry, control means 4 of a laundry program.
  • a first dose of detergent is metered and dispensed at the beginning of a washing cycle and at the same time as the introduction of water into the washing tub 2 of the machine 1.
  • This first dose of detergent takes into account the different operating parameters of the washing machine 1.
  • the control means 4 of the said machine 1 make it possible to define the partial load of laundry according to the selected washing program.
  • the laundry machine 1 adjusts the amount of detergent if the load of laundry introduced into the drum is greater than the partial load of laundry preset by the control means 4 of the machine 1.
  • the main parameters for determining the amount of detergent to be dosed and dispensed for the first and second dosing and dispensing phases of detergent are the water hardness, the level of soiling of the laundry load and the amount of laundry .
  • the water hardness parameter can be saved by the user when installing the washing machine 1.
  • the soil level parameter can be defined by the user by selecting an element of the control means 4 of the machine 1 or else be defined by at least one sensor (not shown), such as for example a turbidity or conductivity sensor. .
  • the information concerning the quantity of laundry is important and modifies the washing cycle as a function of the mass of the laundry load introduced into the drum 3.
  • the quantity of detergent to be dosed and dispensed is variable according to the quantity of laundry introduced into the laundry. drum 3.
  • the secondary parameters that can be taken into consideration in determining the amount of detergent to be dosed and dispensed for the first and second dosing and dispensing phases of detergent are the nature of the laundry items and the type of wash cycle.
  • the type of washing cycle is essentially characterized by its duration.
  • a cycle of short duration must make it possible to dissolve the detergent in the washing bath and to adapt the rinsing phases of the laundry.
  • the Applicant has found that the detergent must be introduced at the earliest during a wash cycle in order to obtain optimum efficiency and the shortest possible cycle time.
  • the quantity of water introduced into the washing tank 2 can be calculated with respect to an opening time of a solenoid valve (not shown).
  • the values of the total amount of water introduced into the washing tub 2 and additional amounts of water filling during the filling phases to maintain the water level make it possible to recognize the load of laundry introduced into the drum. Recognition of laundry allows on the one hand to determine the mass of the load of laundry and also the type of textile.
  • the load of laundry introduced into the drum 3 can be identified with respect to classes of mass CV load of laundry predetermined by the Applicant.
  • the washing machine 1 may comprise at least two classes of mass CV load of laundry, and preferably four classes.
  • the introduction of water and detergent into the washing tub 2 must be carried out together.
  • the detergent has a wetting effect for the laundry load and therefore the mixture of water and detergent impregnates more quickly and efficiently in the laundry load than when the water is introduced alone into the laundry container. washing.
  • the laundry load recognition phase has a duration ranging from 5 minutes to 15 minutes. At the end of the recognition phase of the laundry load, the optimum amount of water was introduced into the washing tub 2.
  • the detergent dosing method comprises an additional water introduction phase in the washing tub 2 simultaneously with the second dosage and detergent dispensing phase.
  • an additional amount of water is added at the same time as the second dosage and detergent dispensing phase.
  • the amount of additional water only substantially changes the amount of water required for the washing cycle of the washing machine 1.
  • the second phase of dosing and dispensing of detergent is carried out before a heating phase of the washing bath of the washing tank 2.
  • the additional amount of detergent introduced during the second dosage and detergent dispensing phase is carried out before the heating phase of the wash bath of the washing tub 2.
  • the second detergent dosing and dispensing step is carried out at the beginning of the heating phase of the washing bath of the washing tub 2.
  • the laundry recognition phase is performed by a laundry mass detection means based on the level of water absorption by the laundry load. This means of detecting the mass of laundry based on the level of water absorption by the laundry load makes it possible to measure directly by the machine 1 the mass of the laundry during the washing cycle.
  • the user does not need to indicate a quantity of laundry by the control means.
  • the amount of laundry determined by the laundry mass detecting means based on the level of water absorption by the laundry load is reliable and accurate.
  • the mass measurement of the laundry load is carried out without a weighing sensor adding an additional cost to the washing machine.
  • the first phase of dosing and dispensing of detergent is carried out during the initial phase of filling the wash tank with water.
  • Dosing and dispensing the detergent during the initial water-filling phase of the washing tank 2 make it possible to ensure the load-recognition phase of the laundry and to deliver the detergent from a detergent box 6 to the laundry compartment. wash tank 2.
  • the first and second dosing and dispensing phases of detergent are performed at the beginning of a wash cycle for a predetermined laundry partial load depending on the selected wash program.
  • the predefined linen partial load corresponds to a half load of laundry.
  • the Applicant considers that the user has introduced into the drum 3 at least the equivalent of the predetermined laundry partial load with respect to the selected washing program, which may be order of the half load of laundry.
  • the first dose of detergent is delivered during the first phase of dosing and dispensing detergent taking into account the various parameters and setting the mass of the load of laundry to a predetermined load of laundry according to predetermined values by the Applicant .
  • a small amount of additional water is introduced into the washing tub 2 due to the operating principle of the detergent delivery.
  • the detergent is poured into the washing tub 2 by a flow of water passing through the detergent box 6 of the washing machine 1.
  • the first and second dosing and dispensing phases of detergent are depending on the hardness level of the water.
  • the first and second dosing and dispensing phases of detergent are dependent on the level of soiling of the laundry load introduced into the drum.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Detergent Compositions (AREA)
EP07112101A 2006-07-10 2007-07-09 Verfahren zur Dosierung von Waschmittel in einer Waschmaschine Active EP1878826B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL07112101T PL1878826T3 (pl) 2006-07-10 2007-07-09 Sposób dozowania detergentu w pralce do prania

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0606385A FR2903427B1 (fr) 2006-07-10 2006-07-10 Procede de dosage de detergent dans une machine a laver le linge

Publications (2)

Publication Number Publication Date
EP1878826A1 true EP1878826A1 (de) 2008-01-16
EP1878826B1 EP1878826B1 (de) 2011-12-14

Family

ID=37696473

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07112101A Active EP1878826B1 (de) 2006-07-10 2007-07-09 Verfahren zur Dosierung von Waschmittel in einer Waschmaschine

Country Status (5)

Country Link
EP (1) EP1878826B1 (de)
AT (1) ATE537291T1 (de)
ES (1) ES2379390T3 (de)
FR (1) FR2903427B1 (de)
PL (1) PL1878826T3 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2354290A2 (de) * 2008-10-29 2011-08-10 Daewoo Electronics Corporation Verfahren zur steuerung einer mit einem flüssigwaschmittelspender ausgestatteten waschmaschine
US20130119082A1 (en) * 2008-07-01 2013-05-16 Whirlpool Corporation Apparatus and method for controlling laundering cycle by sensing wash aid concentration
WO2016102014A1 (en) * 2014-12-23 2016-06-30 Electrolux Appliances Aktiebolag Method for washing laundry in a laundry washing machine with an automatic dosing device and laundry washing machine
IT202100030431A1 (it) * 2021-12-01 2023-06-01 Candy Spa Macchina lavabiancheria e metodo di lavaggio

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4916768A (en) * 1987-12-08 1990-04-17 Ellis Corporation Washing and extracting method
WO2004106615A1 (en) * 2003-05-28 2004-12-09 Lg Electronics Inc. Washing machine and the control method of the same
WO2006059302A2 (en) * 2004-12-01 2006-06-08 Arcelik Anonim Sirketi A washer / dryer and a control method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4916768A (en) * 1987-12-08 1990-04-17 Ellis Corporation Washing and extracting method
WO2004106615A1 (en) * 2003-05-28 2004-12-09 Lg Electronics Inc. Washing machine and the control method of the same
WO2006059302A2 (en) * 2004-12-01 2006-06-08 Arcelik Anonim Sirketi A washer / dryer and a control method thereof

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130119082A1 (en) * 2008-07-01 2013-05-16 Whirlpool Corporation Apparatus and method for controlling laundering cycle by sensing wash aid concentration
US10066331B2 (en) 2008-07-01 2018-09-04 Whirlpool Corporation Apparatus and method for controlling laundering cycle by sensing wash aid concentration
EP2354290A2 (de) * 2008-10-29 2011-08-10 Daewoo Electronics Corporation Verfahren zur steuerung einer mit einem flüssigwaschmittelspender ausgestatteten waschmaschine
EP2354290A4 (de) * 2008-10-29 2013-11-20 Daewoo Electronics Corp Verfahren zur steuerung einer mit einem flüssigwaschmittelspender ausgestatteten waschmaschine
WO2016102014A1 (en) * 2014-12-23 2016-06-30 Electrolux Appliances Aktiebolag Method for washing laundry in a laundry washing machine with an automatic dosing device and laundry washing machine
CN107002335A (zh) * 2014-12-23 2017-08-01 伊莱克斯家用电器股份公司 用于在具有自动投量装置的洗衣机中洗涤衣物的方法和洗衣机
CN107002335B (zh) * 2014-12-23 2019-04-16 伊莱克斯家用电器股份公司 用于在具有自动投量装置的洗衣机中洗涤衣物的方法和洗衣机
EP3486358A1 (de) * 2014-12-23 2019-05-22 Electrolux Appliances Aktiebolag Verfahren zum waschen von wäsche in einer wäschewaschmaschine mit automatisierter dosiervorrichtung sowie wäschewaschmaschine
IT202100030431A1 (it) * 2021-12-01 2023-06-01 Candy Spa Macchina lavabiancheria e metodo di lavaggio
WO2023100023A1 (en) * 2021-12-01 2023-06-08 Candy S.P.A. Washing machine and washing method

Also Published As

Publication number Publication date
PL1878826T3 (pl) 2012-05-31
EP1878826B1 (de) 2011-12-14
ES2379390T3 (es) 2012-04-25
ATE537291T1 (de) 2011-12-15
FR2903427B1 (fr) 2008-08-22
FR2903427A1 (fr) 2008-01-11

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