EP0383218B1 - Procédé pour commander le rinçage d'une machine à laver commandée par progamme - Google Patents

Procédé pour commander le rinçage d'une machine à laver commandée par progamme Download PDF

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Publication number
EP0383218B1
EP0383218B1 EP90102655A EP90102655A EP0383218B1 EP 0383218 B1 EP0383218 B1 EP 0383218B1 EP 90102655 A EP90102655 A EP 90102655A EP 90102655 A EP90102655 A EP 90102655A EP 0383218 B1 EP0383218 B1 EP 0383218B1
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EP
European Patent Office
Prior art keywords
conductivity
rinsing
washing machine
water
measuring cell
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
EP90102655A
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German (de)
English (en)
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EP0383218A1 (fr
Inventor
Georg F. Wagner
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.)
Wagner Georg KG
Original Assignee
Lang Apparatebau GmbH
Wagner Georg KG
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Publication date
Application filed by Lang Apparatebau GmbH, Wagner Georg KG filed Critical Lang Apparatebau GmbH
Priority to AT90102655T priority Critical patent/ATE87674T1/de
Publication of EP0383218A1 publication Critical patent/EP0383218A1/fr
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Publication of EP0383218B1 publication Critical patent/EP0383218B1/fr
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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
    • D06F34/22—Condition of the washing liquid, 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
    • 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
    • D06F2103/22—Content of detergent 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/02—Water supply
    • 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
    • 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
    • D06F2105/52—Changing sequence of operational steps; Carrying out additional operational steps; Modifying operational steps, e.g. by extending duration of steps
    • 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
    • D06F2105/62—Stopping or disabling machine operation

Definitions

  • the invention relates to a method of the type specified in the preamble of claim 1 and an apparatus for performing the method.
  • the difference value of the specific conductivities is set to a very small value of a few microsiemens.
  • the conductivity measurement must be carried out with extremely high accuracy so that the shortfall in this small difference value can be determined. If the conductivity measuring cell is arranged in the machine room, it is in the moving rinsing water, which has no homogeneous conductivity distribution. The measured conductivity fluctuates with a relatively large amplitude. These amplitude fluctuations are considerably larger than the difference value, the undershoot of which is to be measured. This is the reason why the known method does not provide a sufficient criterion for ending the rinsing process.
  • the reference value is briefly undershot while the rinse water as a whole still has a higher conductivity, so that the rinsing process is terminated too early, and it may also happen that the limit value is not undershot at all, so that the rinse is running too long.
  • DE-A-34 24 711 discloses a method for regulating a cleaning system, in which washing liquid is continuously passed through the cleaning system. There is a conductivity measuring cell in the inlet and one in the outlet. The difference between the two conductivity signals is compared with a predetermined limit value and the cleaning phase is ended when the inlet and outlet have essentially the same conductivity values. Such a method is not suitable for monitoring the washing processes of a washing machine because these washing processes are carried out at intervals and not in continuous operation. In addition, conductivity differences cannot be measured with sufficient certainty in the known method.
  • the invention is based on the object of specifying a method which is suitable for controlling the rinsing processes of a washing machine with high accuracy and for indicating the completion of the rinsing process with a very low residual concentration of the detergent.
  • the conductance is measured only when the water flow is at a standstill.
  • a sufficiently precise and uniform measurement which leads to a representative result, is only possible when the water flow stops.
  • the flow sweeping along a conductivity measuring cell causes a strongly varying conductivity signal simply because of the flow turbulence.
  • the conductivity of the rinsing water running off after a rinsing process varies greatly due to the different lye concentration.
  • the rinse water that runs off first has a relatively low residual alkalinity, while the alkalinity and thus the conductivity increases towards the end of the drain, when the water coming from the depths of the fabric of the material to be washed is pumped out.
  • measurements are only carried out when the rinsing water is at a standstill, and in each section of the drain line in which the measurement is carried out is the rinsing water that came from the depths of the tissue and that was the last to leave the washing machine room during pumping.
  • a decision is made as to whether a further rinsing process is necessary and, if necessary, the amount of fresh water with which the new rinsing process must be carried out.
  • the measurement during a break also has the advantage of precisely determining the temperature for the calculation of the temperature coefficient. This is important because there are cold and warm rinsing processes.
  • the method according to the invention optimizes the rinsing quality and the washing result and minimizes the consumption values for electricity, water and time.
  • the differential conductivity measured value can shorten a rinsing process if the measured value means that there is no longer any need for a longer or further rinse provided in the program.
  • the differential conductance should intervene directly in the program sequence control for the rinsing and spinning process.
  • An electrical conductivity measuring cell is arranged in the water inlet, since the conductivity value of the inlet water is also within the same water supply due to seasonal or technical circumstances can fluctuate greatly, which could become a significant source of error if the desired conductivity measured value, which is correlated to the desired residual alkalinity, was compared only with the measured conductivity value measured by the measuring cell in the water outlet and not with the differential measured conductivity value from the water inlet and water outlet measuring cells.
  • the arrangement of a further conductivity measuring cell in the washing machine room enables the concentration there to be monitored and thus a control of the metering that has taken place and a control of the foam development in the lye room.
  • the concentration of the wash liquor can be determined with the conductivity measuring cell in the washing machine room, since the detergents used today in the commercial and small-scale sector but also in the household sector bring about an at least similar conductivity value for the wash liquor.
  • an over- or under-dosing can be determined if the measured conductivity value deviates from the usual or the program specification, and can be triggered as a result of re-dosing or the inflow of fresh water.
  • the determined foam development can then be influenced by intervening in the program sequence, such as stopping the washing drum, lowering the temperature, etc.
  • this conductivity measuring cell acting as a foam detector or sensor, for example, the escape of foam from the induction bowl is prevented and excessive foam development, which leads to a poorer washing result, can be counteracted.
  • the washing machine designated overall by 1, has an inlet hose 2 for fresh water, which is attached to the water inlet of the washing machine by means of a coupling 3.
  • a first conductivity measuring cell 4 with a temperature sensor is arranged in the inlet hose 2.
  • a valve device 6 composed of solenoid valves is arranged in the water inlet on the washing machine side to the detergent dispensing chamber 5.
  • the detergent dispensing chamber 5 is connected to the washing machine room 7, in which a washing drum 8 is arranged, via a pipeline 9.
  • the lower conductivity measuring cell is located at the normal level 11, which corresponds to the suds level in normal washing programs.
  • the upper one of the conductivity measuring cells 10 is located at the level of the high level 12 and the wool level 13, which can be achieved with wool washing programs or washing programs with a high suds level.
  • another pipe 14 leads to an emptying pump 15 provided with a fluff filter.
  • another pipe 16 branches off from the pipe 14, at the end of which a pressure switch 17 is attached.
  • a pipeline 18 branches off from the pipeline 14 and leads to an emergency drain 19.
  • the drain line 20 follows, which forms the water drain from the washing machine to form a siphon 21.
  • another line 22 leading to the detergent dispensing chamber 5 branches off, which is designed as a vent 23.
  • a further conductivity measuring cell 24 with a temperature sensor is arranged in the drain hose 20.
  • the conductivity measuring cells 4 and 24 have the same electrical cell constants and conductivity values. With the conductivity measuring cell 4 the specific electrical conductivity of the water entering the washing machine 1 is measured and with the conductivity measuring cell 24 the specific electrical conductivity of the water pumped out of the washing machine 1 is measured in each case in a temperature-compensated manner.
  • the measuring cell 24 is arranged in the section 20a of the drain line 20, in which the residual water remains after the pumping has ended, so that it is permanently below the liquid level, which is provided in the lines 20 and 16 with the reference number 25, and thus is constantly on Liquid pressure is present and wetting takes place with liquid. In particular, an arrangement in a calmed down pump sump has proven to be advantageous.
  • the measuring cell 4 is arranged in the pressurized side of the water inlet, upstream of the program-controlled valve device 6, so that a liquid pressure is constantly present at this measuring cell and wetting of the measuring cell with liquid is constantly ensured.
  • the signal from the measuring cell 4 is only evaluated when the valve device 6 is shut off.
  • the conductivity measurements are carried out in the state without liquid flow at the end of individual program steps and this measured value is stored until the next program step.
  • This measured value is assumed to be the "true conductance” if it shows a drift below 2 ⁇ S / cm after several individual measurements.
  • the temperature sensor is then in the steady state.
  • the differential conductivity measured value is calculated, taking into account the special temperature compensation values for the inlet and outlet water, and this value is fed to the control electronics of the washing machine as a signal for the program control. This can result, for example, in a repetition or termination of the pending or just carried out rinsing or spinning process.
  • the measured values delivered by the measuring cells 4 and 24 or the differential conductance are individually evaluated in the control electronics of the washing machine depending on the washing program set or additionally on the current program step within the washing process and with characteristic values which are stored in the washing machine control system to trigger certain switching processes. compared.
  • the program sequence control can then be influenced to change the amount of water flowing into the washing machine or, for example, also the spin speed of the washing machine drum.
  • a lack of the differential conductivity measurement signal is evaluated by the control electronics as a disturbance. With this e.g. cause the program to be interrupted if there is a lack of water or a lack of detergent.
  • the arranged in the washing machine room 7 conductivity measuring cells 10 can be designed so that the specific electrical conductivity measured there and the respective temperature coefficient with those in the Individual washing cycles of the values of a particular detergent that are usually present and stored in the control electronics can be compared.
  • Both the conductivity measuring cell 10 and the conductivity measuring cell 24 can also be used to control a metering device (not shown in more detail) in order to achieve a concentration of detergent substance in the washing machine room that is dependent on the type of washing and the washing program.
  • the measuring cells in the washing machine room 7 can also be used for flow evaluation, for example the display of lack of water, and for determining excess or. Lower concentrations of detergent in the wash liquor can be used.
  • the movement of the washing drum can also be controlled by rhythmically flooding and exposing the conductivity measuring cell.
  • the foam development in the washing machine room 7 can also be measured via the signal evaluation of the electrical conductivity measuring cells 10 installed there and used for a direct intervention in the program sequence control to reduce or eliminate the foam development, for example by a temporary machine stop, a lowering of the washing liquor temperature, a change in the drum speed, a change in the interval times, the addition of fresh water, etc. causes.
  • the electrical conductivity measuring cell 4 in the water inlet is provided so that there are also fluctuations in the conductivity value of the inlet water, which also occurs within the same water supply due to seasonal changes or may fluctuate greatly due to technical reasons, is correctly recorded in each case.
  • the measuring cell 4 is provided with a fast-acting temperature sensor. Furthermore, it must be possible to set a temperature coefficient so that the measurement error does not become too great given the low conductivity values typically found in the microsiemens range, for example 200 to 1200 ⁇ S.
  • the measuring cell 4 is arranged in the pressurized flow in front of the water inlet solenoid valves 6 and is therefore subject to long-term stable measuring conditions.
  • the measuring cell 24 is also temperature-compensated in order to be able to compensate for the different washing liquor temperatures in different types of laundry and washing programs with regard to their influence on the differential conductivity measured value.
  • the temperature coefficient is preferably set to the typical values of a highly dilute alkaline, aqueous liquid which is similar to the water value. Because of its arrangement in the area of the siphon 21, the measuring cell 24 is also subjected to long-term stable measuring conditions, in particular constant wetting of the measuring cell.
  • This permanent wetting of the flow measuring cells has the advantage that the inertia of the temperature sensor is eliminated, because in any case, in the context of rapidly running washing programs, the time required for the temperature sensor to settle warmly given is. This settling of the temperature sensor is a prerequisite for correct temperature compensation and this in turn is a prerequisite for correct measurement and formation of a difference value. Without the arrangement, a reliable measured value cannot be determined if it is to be accurate in the range of a few microsiemens.
  • the two measuring cells 4 and 24 are arranged as simple intermediate pieces in the lines 2 and 20.
  • Their measuring cell geometry corresponds to the requirements of a low cell constant, e.g. 1.0, and the hygienic requirements with regard to the lowest possible deposits.
  • the temperature sensors have a time constant in the lower second range, so that the duration of the measurement value falsification is kept as short as possible due to the settling to the correct temperature value. This run-in time is hidden from the measurement.
  • the conductivity measured values determined by means of the measuring cells 4 and 24 are processed either analog or digital in a differential arithmetic circuit and linked to switching points of the program sequence control.
  • a microprocessor with permanent memory for the measured values should expediently be provided so that the last operating state can be recorded in the event of a power failure.
  • the control electronics are used to assign various switching points of the program sequence control to the curve profile of the differential conductivity measured value which are selected and activated as a function of the programmed type of laundry and which control the course of the washing program within the program step or washing cycle which is currently pending.
  • the water inflow is to be controlled on the basis of the measured values determined, as are the time and number of alkali dilution and mixing processes, and in particular the duration and number of revolutions of the intermediate spin.
  • the centrifuged water pumped out last is decisive for the final quality of the condition-dependent rinsing. If the final value still deviates from the norm despite previous rinsing optimization, a further rinsing and spinning process can be triggered.
  • the signals from the measuring cells 4 and 24 can also be used for fault reports. For example, an empty water supply hose or heavily contaminated water can be reported by means of cell 4 if either no measured value signal or a signal that is above a limit value is measured.
  • the measuring cell 24 can also be used to determine whether the wash liquor is under-concentrated. Faulty operation of the drain pump can also be determined with this measuring cell, since the transition from one wash cycle to a next wash cycle is usually also associated with a change in the electrical conductivity in the wash liquor or the wash water. If a change in the electrical conductivity cannot be determined during such a washing cycle change, it can be concluded from this that a defective drain pump or a blocked lint filter.
  • the conductivity measuring cells 10 in the washing machine room 7 serve to determine the concentration of detergent in the wash liquor and to control the development of foam. Since one is particularly in the commercial and small trade Area, but also for household washing machines, it can be assumed that the same detergents are usually used, which produce approximately the same conductivity values in the wash liquor, with these measuring cells an overdosing or underdosing, which cause a conductivity in the washing liquor deviating from the standard value, can be determined. This deviation can be processed in the control electronics to either add more detergent or to supply fresh water.
  • one of the measuring cells 10 is arranged in the area of the normal level 11 in the washing machine room 7, this can be used as an electrical foam detector or sensor.
  • the result of the foam formation is that the fill level drops below the level detected by the measuring cell 10 and the liquid is partially distributed in the foam bubbles.
  • a conductivity measurement value can only be determined from the conductivity measuring cell when foam bubbles are present on the cell.
  • the foam bubbles between the electrodes of each measuring cell cause a short current flow when there is foam between the electrodes, which is immediately interrupted when the foam runs out of the measuring cell. Electrical signals therefore fluctuate only sporadically and within a very short time.
  • the rate of change and the amount of change are characteristic of the foam and certain states of the foam in the sense of a signal curve evaluation, for example a Fourier transformation. This can be used to detect the state of foam in the washing machine room 7.
  • the electrical method of foam detection is quicker in terms of its response behavior than the differential pressure measurement methods that have been customary up to now, and it also reacts much earlier than, for example, a pressure sensor. If the development of foam has been determined by means of the conductivity measuring cells 10, the electrical signals in the control electronics can be used to influence the program sequence control and can be implemented, for example, in stopping the rotational movement of the washing drum 8 or in lowering the washing temperature.
  • the foam development for different alkalis or fill level levels can be detected or ascertained.
  • the response threshold of the foam detection is variable, so that it can be taken into account that different detergents and washing programs as well as differently soiled laundry have different foaming effects.
  • These measuring cells 10 which are designed as foam detectors, prevent foam from escaping from the detergent dispensing chamber and thus prevent water damage in and outside the device. This can also improve the washing result, since excessive foaming leads to a significant decrease in the effectiveness of the washing mechanism and thus to a poorer washing result.
  • Curve a shows the successive prewash VW, main wash HW and rinse processes SP1, SP2 and SP3, the speed n of the drum 8 being indicated along the ordinate.
  • Diagram b) shows the quantities of water Q that are contained in the washing machine room 7 in the various washing and rinsing processes in chronological assignment to diagram a).
  • the sloping flanks indicate the times of water intake or water drainage.
  • Diagram c) shows the blocking times 30 in which the evaluation of the signal from the measuring cell 24 is suppressed. These are the times when the pump 15 pumps water out of the machine room 7.
  • Diagram d) shows the conductance difference ⁇ k, that is to say the difference between the conductance measured at measuring cell 24 and the reference conductance.
  • the reference conductance is the conductance of the fresh water measured and stored by the measuring cell 4.
  • the predetermined dimension ⁇ k g of the differential conductance, at which no further rinsing process is required, is 50 ⁇ S / cm in the present exemplary embodiment.
  • the conductivity values are specific conductivities.
  • the conductivity of the water running off the main washing process HW is very high because of the high detergent content and is, for example, 8000 ⁇ S / cm. This value is not entered in Fig. 2d).
  • an irregular, strongly fluctuating signal 31 is produced on the measuring cell 24 while the rinsing water is being pumped out, the conductivity dropping sharply at the beginning of the pumping and then increasing when the residual water coming from the depths of the tissue reaches the measuring cell .
  • the vibrating signal 31 falls within the range of a blocking time 30 and is not evaluated.
  • the residual water is in the section 20a and after a settling time a of about one second after the pumping has ended, the conductivity is measured in point 32 or the conductivity signal supplied by the measuring cell 24 is evaluated. If the differential conductance determined in point 32 is still above the dimension ⁇ k g , the further rinsing process SP2 is then carried out.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)

Claims (8)

  1. Procédé de commande du rinçage d'un lave-linge commandé par un programme, ledit lave-linge effectuant plusieurs opérations de rinçage à l'issue d'une opération de lavage, la conductivité électrique de l'eau de rinçage étant mesurée et le rinçage étant interrompu lorsque la différence entre la conductance mesurée et une conductance de référence devient inférieure à une valeur prédéfinie,caractérisé en ce que la mesure de conductance s'effectue dans une portion (20a) de la conduite d'évacuation (20), dans laquelle subsiste du liquide après le vidage du compartiment lave-linge (7), en ce que la mesure de conductance est effectuée au terme d'une opération de rinçage sur l'eau de rinçage se trouvant dans la portion (20a), et en ce que, en fonction du résultat de la mesure de conductance, il est décidé si une nouvelle opération de rinçage est effectuée.
  2. Procédé selon la revendication 1, caractérisé en ce que la conductance de référence est la conductance de l'eau propre d'alimentation, ladite conductance étant mesurée sur l'eau propre se trouvant dans la conduite d'alimentation (2).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la conductance mesurée est utilisée comme grandeur directrice pour déterminer la quantité d'eau propre à fournir lors de l'opération de rinçage suivante et/ou pour décider une opération d'essorage ultérieure.
  4. Procédé selon l'une des revendications 1 à 3, caractérisé en ce que la conductivité électrique est également mesurée dans le compartiment lave-linge (7) à au moins une hauteur et exploitée pour commander le déroulement du programme.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que la mesure de conductivité est effectuée dans la portion (20a) entre la pompe de vidange (15) et un siphon (21).
  6. Procédé selon l'une des revendications 1 à 4, caractérisé en ce que la mesure de conductivité est effectuée dans un carter inférieur stabilisé de pompe.
  7. Dispositif pour réaliser le procédé selon l'une des revendications 1 à 6, caractérisé en ce qu'une cellule de mesure de conductivité (24) est implantée dans une portion (20a) de la conduite d'évacuation (20) du lave-linge, dans laquelle subsiste du liquide après le vidage du compartiment lave-linge (7), en ce que l'analyse du signal de la cellule de mesure (24) intervient au terme d'une opération de rinçage, et en ce que, en fonction du résultat de la mesure de conductance par comparaison avec une valeur de référence, une électronique de commande décide si une nouvelle opération de rinçage doit être effectuée.
  8. Dispositif selon la revendication 7, caractérisé en ce que la valeur de référence est fournie par une autre cellule de mesure (4) qui est implantée dans la conduite d'alimentation en eau, en amont d'un système de valves (6) commandé en fonction du programme de la machine, l'analyse du signal de l'autre cellule de mesure (4) n'étant effectuée que lorsque le système de valves (6) est fermé.
EP90102655A 1989-02-13 1990-02-10 Procédé pour commander le rinçage d'une machine à laver commandée par progamme Expired - Lifetime EP0383218B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90102655T ATE87674T1 (de) 1989-02-13 1990-02-10 Verfahren zur steuerung der spuelung einer programmgesteuerten waschmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3904222 1989-02-13
DE3904222A DE3904222A1 (de) 1989-02-13 1989-02-13 Verfahren und vorrichtung zur programmablaufsteuerung von waschmaschinen

Publications (2)

Publication Number Publication Date
EP0383218A1 EP0383218A1 (fr) 1990-08-22
EP0383218B1 true EP0383218B1 (fr) 1993-03-31

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EP (1) EP0383218B1 (fr)
AT (1) ATE87674T1 (fr)
DE (2) DE3904222A1 (fr)

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DE19650915B4 (de) * 1996-06-25 2006-09-21 AEG Hausgeräte GmbH Flüssigkeitsführendes Hausgerät mit einer Programmsteuerung
CN102356190A (zh) * 2009-03-16 2012-02-15 Bsh博世和西门子家用电器有限公司 用于优化洗衣机中的漂洗阶段的方法和适合于该方法的洗衣机
CN102413752A (zh) * 2009-04-24 2012-04-11 伊莱克斯家用产品股份有限公司 洗碗机的运行方法
CN101608388B (zh) * 2008-05-20 2013-06-12 三星电子株式会社 洗衣机控制方法
DE102015204538A1 (de) 2015-03-13 2016-09-15 BSH Hausgeräte GmbH Waschmaschine mit elektrochemischer Wasserhärtebestimmung sowie Verfahren zu ihrem Betrieb
DE102015204540A1 (de) 2015-03-13 2016-09-15 BSH Hausgeräte GmbH Verfahren zum Betrieb einer Waschmaschine mit einem elektrochemischen Sensor sowie hierzu geeignete Waschmaschine
US9708748B2 (en) 2014-05-30 2017-07-18 Lg Electronics Inc. Laundry treatment apparatus

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GB2266898B (en) * 1992-05-09 1995-09-20 Hotpoint Ltd Washing machines
DE4232135C2 (de) * 1992-09-25 1995-10-26 Bauknecht Hausgeraete Verfahren zur Überwachung und Steuerung eines Programmprozesses im Programmablauf eines Haushaltgerätes
DE19548514A1 (de) * 1995-12-22 1997-06-26 Bosch Siemens Hausgeraete Wasserführendes, programmgesteuertes Haushaltgerät
ES2177370B1 (es) * 1999-10-14 2004-08-16 Atyc Technological S.L. Aparato para tratamiento en humedo de materias textiles.
DE10042713C2 (de) * 2000-08-31 2003-08-21 Miele & Cie Verfahren zur Steuerung eines Waschprogramms
KR101052783B1 (ko) * 2007-04-06 2011-07-29 삼성전자주식회사 세탁기의 제어방법
DE102007042968B4 (de) * 2007-09-10 2021-05-12 BSH Hausgeräte GmbH Verfahren zur Erkennung von Schaum in einer Trommelwaschmaschine und hierzu geeignete Trommelwaschmaschine
KR101692719B1 (ko) 2008-04-30 2017-01-04 엘지전자 주식회사 세탁장치의 제어방법
DE102009052728A1 (de) * 2009-11-12 2011-05-19 Perma-Trade Wassertechnik Gmbh Wasseranschlusseinrichtung beziehungsweise Verfahren zur Überwachung des Wasserdurchsatzes durch eine Wasserleitung
DE102010002773A1 (de) * 2010-03-11 2011-09-15 Henkel Ag & Co. Kgaa Dosiersystem mit Dosierkontrolle für ein wasserführendes Haushaltsgerät
AT510818A3 (de) * 2010-11-18 2019-02-15 Perma Trade Wassertechnik Gmbh Wasseranschlusseinrichtung beziehungsweise Verfahren zur Überwachung des Wasserdurchsatzes durch eine Wasserleitung
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JP2024016745A (ja) * 2022-07-26 2024-02-07 青島海爾洗衣机有限公司 ドラム式洗濯機

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DE19650915B4 (de) * 1996-06-25 2006-09-21 AEG Hausgeräte GmbH Flüssigkeitsführendes Hausgerät mit einer Programmsteuerung
CN101608388B (zh) * 2008-05-20 2013-06-12 三星电子株式会社 洗衣机控制方法
CN102356190A (zh) * 2009-03-16 2012-02-15 Bsh博世和西门子家用电器有限公司 用于优化洗衣机中的漂洗阶段的方法和适合于该方法的洗衣机
CN102356190B (zh) * 2009-03-16 2014-01-01 Bsh博世和西门子家用电器有限公司 用于优化洗衣机中的漂洗阶段的方法和适合于该方法的洗衣机
US9481957B2 (en) 2009-03-16 2016-11-01 BSH Hausgeräte GmbH Method for optimizing a rinsing phase in a washing machine and washing machine suitable therefor
CN102413752A (zh) * 2009-04-24 2012-04-11 伊莱克斯家用产品股份有限公司 洗碗机的运行方法
US9708748B2 (en) 2014-05-30 2017-07-18 Lg Electronics Inc. Laundry treatment apparatus
DE102015204538A1 (de) 2015-03-13 2016-09-15 BSH Hausgeräte GmbH Waschmaschine mit elektrochemischer Wasserhärtebestimmung sowie Verfahren zu ihrem Betrieb
DE102015204540A1 (de) 2015-03-13 2016-09-15 BSH Hausgeräte GmbH Verfahren zum Betrieb einer Waschmaschine mit einem elektrochemischen Sensor sowie hierzu geeignete Waschmaschine

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ATE87674T1 (de) 1993-04-15
EP0383218A1 (fr) 1990-08-22
DE59001090D1 (de) 1993-05-06

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