EP2762631A1 - Procédé de fonctionnement d'un lave-linge, dispositif de recirculation et lave-linge - Google Patents

Procédé de fonctionnement d'un lave-linge, dispositif de recirculation et lave-linge Download PDF

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Publication number
EP2762631A1
EP2762631A1 EP14401002.2A EP14401002A EP2762631A1 EP 2762631 A1 EP2762631 A1 EP 2762631A1 EP 14401002 A EP14401002 A EP 14401002A EP 2762631 A1 EP2762631 A1 EP 2762631A1
Authority
EP
European Patent Office
Prior art keywords
speed
washing
circulating pump
pump
temperature
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
EP14401002.2A
Other languages
German (de)
English (en)
Other versions
EP2762631B1 (fr
Inventor
Markus Drücker
Michael Hormann
Heinz Maass
Dirk Sieding
Rolf Stappenbeck
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.)
Miele und Cie KG
Original Assignee
Miele und Cie KG
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Publication date
Application filed by Miele und Cie KG filed Critical Miele und Cie KG
Publication of EP2762631A1 publication Critical patent/EP2762631A1/fr
Application granted granted Critical
Publication of EP2762631B1 publication Critical patent/EP2762631B1/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
    • D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
    • D06F35/005—Methods for washing, rinsing or spin-drying
    • 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

Definitions

  • the present invention relates to a method for operating a washing machine with Umflut Road and a washing machine.
  • the present invention relates to a method for operating a washing machine with a tub for receiving washing liquid for treating laundry and a Umflut adopted with a circulating pump and a Umflut effet.
  • the method comprises carrying out a washing program with a washing phase and at least one rinsing phase.
  • the circulating device is activated such that washing liquid is conveyed by means of the circulating pump from a first region of the suds container through the rerouting line into a second region of the suds container.
  • Such a method is for example from the EP 2 426 246 A1 known.
  • washing program that performs at least one washing phase and at least one rinsing phase in which the laundry washing liquid such as wash liquor in the wash phase or water is supplied in the rinse phase.
  • the laundry In the washing phase, the laundry is moved in a rotating drum, which is part of the tub, and wetted or moistened with washing liquor. In this case, there is water in the tub or in the drum of the washing machine and by moving the laundry, the dirt is rinsed out.
  • washing liquid remaining in the laundry is rinsed by moving the laundry in water instead of washing liquor.
  • the flooding device which is able to convey washing liquid from a first region of the tub to a second region of the tub in order to contact the laundry from the second region with washing liquid
  • the laundry can be better mixed with washing liquid.
  • the mixing of the laundry with washing liquid also depends on the volume flow of the washing liquid conveyed by the circulating device. If the volume flow is low, the washing or rinsing effect is low. If the volume flow is high, the claimed mechanical components of the circulating device will heat up and possibly be damaged.
  • the invention is therefore based on the object to provide a method for operating a washing machine and a washing machine, with the or a good Washing and / or rinsing effect of laundry is provided without damaging the Umflut Road.
  • a volume flow of the pumped washing liquid is varied. That is, the circulating device conveys at different time intervals different amounts per unit time of washing liquid from the first region of the tub in the second region of the tub. At intervals of time with promotion of larger amounts per unit time of washing liquid an improved washing and / or rinsing effect is achieved, while at intervals with promotion of smaller amounts per unit time of washing liquid Umflut issued is relieved to take no damage.
  • the first area of the tub is preferably the lower area of the tub, based on the operating position of the washing machine. In the lower area, due to gravity also accumulates the laundry to be washed.
  • the second region of the tub is preferably the lateral and / or upper region of the tub, based on the operational installation position of the washing machine. By flooding of washing liquid from the lower region of the tub in the lateral and / or upper region a particularly good mixing of washing liquid and laundry is achieved.
  • the volume flow is varied by varying a rotational speed of the circulating pump.
  • the higher the speed of the circulating pump the greater the volume flow.
  • the greater the volume flow the better the washing and / or rinsing effect is achieved because the more intense the fiber of the laundry to be washed can be penetrated from a second region of the tub.
  • the volume flow is preferably varied as a function of a temperature of the circulating pump. If the circulating pump is operated at high speed for a longer period of time, the problem may arise that its temperature will increase if the circulating pump has a longer service life increases at higher speed and the circulating pump is damaged when reaching a high temperature.
  • By varying the volumetric flow as a function of the temperature of the circulating pump it is possible alternately to set time intervals in which a high volumetric flow is provided for achieving an improved washing and / or rinsing effect and, furthermore, to set time intervals in which the circulating pump can be set by setting a low volumetric flow is relieved so that it does not damage due to reaching an excessively high operating temperature.
  • the temperature of the circulating pump can be measured, for example, on the motor, on the motor windings and / or on the housing.
  • the bypass pump is preferably higher than its rated speed for continuous operation when the temperature of the bypass pump is below a first predetermined temperature value and at a second speed equal or is lower than the threshold speed, preferably its rated speed for continuous operation when the temperature of the bypass pump is above a second predetermined temperature value, wherein the first predetermined temperature value is less than or equal to the second predetermined temperature value.
  • the first predetermined temperature is in the range between 20 and 90 ° C and the second predetermined temperature in the range between 90 and 120 ° C. Under rated speed in continuous operation, the speed is understood at which the circulating pump in continuous operation gives the maximum power.
  • the temperature of the circulating pump is detected.
  • the speed of the circulating pump is set as a function of the detected temperature for adjusting the volume flow.
  • a first speed is set which is higher than the rated speed of the bypass pump for continuous operation.
  • the bypass pump is operated at a second speed equal to or lower than its rated speed for continuous operation is.
  • the temperature of the circulating pump is further detected and its speed adjusted as described above. In this way, an effective washing and / or rinsing effect is achieved, while at the same time ensuring that the circulating pump is not damaged.
  • the first predetermined time interval is in the range between 30 and 75 seconds, and the second predetermined time interval is between 90 and 150 seconds.
  • the temperature of the circulating pump need not be detected during the process, because the speed of the circulating pump is controlled in a time-dependent manner.
  • the temperature of the circulating pump can also be detected in this method and serve to send an emergency signal when exceeding the above-mentioned second temperature signal and / or to end the activation of the circulating device for safety reasons.
  • the volume flow of the pumped washing liquid is varied stepwise.
  • the speed of the circulating pump is also varied stepwise. That is, for example, the first predetermined speed value is set substantially abruptly to the second predetermined speed value, and vice versa. Just as abruptly, the set flow rate is varied.
  • the present invention further relates to a washing machine with a tub for receiving washing liquid in the tub and a Umflut issued.
  • the circulating device has a variable-speed circulating pump. By means of the variable-speed circulating pump, the volume flow can be varied.
  • the variable-speed bypass pump is preferably a three-phase pump.
  • the washing machine further comprises a control device for controlling the circulating pump, wherein the control device has a Frequency converter has.
  • the control device serves to control the rotational speed of the circulating pump in a time-dependent and / or circulating-temperature-dependent manner and thereby to vary the volumetric flow.
  • Fig. 1 a cross-sectional view of a washing machine 1 is shown.
  • the washing machine 1 has a tub 2 for receiving washing liquid 3 for treating laundry 8, which is arranged in a housing 4.
  • the housing 4 has a door 5 for loading and unloading the laundry 8 from the tub 2.
  • the washing machine 1 further has an inlet valve 6 for the entry of water from the supply network in the dispenser 7, in which detergent is optionally filled. Water from the inlet valve 6 and possibly detergent are passed through the connecting pipe 9 in the tub 2, in which the laundry is 8.
  • the water and optionally detergent form the washing liquid 3, which accumulates in a first region of the tub 2, according to gravity in the lower region of the tub 2, in which also the laundry 8 accumulates.
  • a drain device 12 is arranged, which leads out when activated spent washing liquid from the tub 2.
  • the drain device 12 has a drain pump 12a or drain pump, which pumps off activated liquid from the tub 2 by activating them from a drain pipe 12b to a drain line 12c.
  • the drain line 12c opens into a sewer or other drainage.
  • the drain pipe 12b is also connected to a flooding device 11, which has a circulating pump 11a, a bypass line 11b and an outlet 11c.
  • the Umflutpumpe 11a pumped from the drain pipe 12b washing liquid pumped through the Umbluttechnisch 11b in a second, upper portion of the tub 2.
  • the washing liquid 3 is sprayed from above through the outlet 11 c such as a nozzle on the laundry 8 and achieved a better mixing of laundry 8 and 3 washing liquid.
  • the circulating device 11 When carrying out a washing program with a washing phase and at least one rinsing phase, the circulating device 11 is activated during the washing phase and / or one of the rinsing phases in such a way that washing liquid 3 from the suds container 2 through the outlet tube 12b and by means of the circulatory device 11 with the circulating pump 11a through the Umflut effet 11 b is conveyed into the upper region of the tub 2, wherein the volume flow of the pumped washing liquid 3 is varied.
  • a control device 13 has a frequency converter 14 and controls the speed of the circulating pump 11a, for example, as a function of the temperature of the circulating pump 11a or in dependence on predetermined time intervals.
  • bypass pump 11a is controlled by the controller 13 to operate below a first predetermined temperature of the bypass pump 11a at a first speed greater than the rated speed for continuous operation and above a second predetermined temperature of the bypass pump 11a at a second speed which is less than or equal to the rated speed for continuous operation.
  • Fig. 2 shows the timing of a setting of a volume flow of a circulating pump speed.
  • the time axis of the wash or rinse phase is arbitrarily set to 600 seconds for illustrative purposes and can last longer or shorter.
  • Fig. 2 shows a variation of the speed of the circulating pump.
  • the circulating pump is operated at a speed of 3000 revolutions per minute (RPM).
  • RPM revolutions per minute
  • These 60-second time intervals alternately alternate at 120-second intervals in which the circulating pump is operated at a speed of 3500 rpm.
  • the volume flow of conveyed washing liquid is likewise varied.
  • the volumetric flow is 15 liters per minute (l / min), and in the 120 second intervals, the volumetric flow is 20 l / min.
  • the circulating pump is operated at a speed higher than its rated speed for continuous operation in the 120 second time intervals (boost mode).
  • boost mode the temperature of the circulating pump increases.
  • Lowering the circulating pump speed in the 60-second time intervals to a speed equal to or lower than its rated speed for continuous operation decreases the circulating pump temperature. If it falls below a predetermined limit, as in this case after 60 seconds, the next boost operation is started until it is expected that the temperature of the purge pump will become so high that it could be damaged, as in this case after 120 seconds.
  • the 60-second time intervals and 120-second time intervals alternate as the wash or rinse phase progresses.
  • this mode of operation enables a high mixing of washing liquid and laundry at volume flows of 20 l / min.
  • the washing liquid in the volume flow peaks penetrate fibers of the laundry more intense and increases the washing effect in the washing phase and rinses the laundry in the Rinse phases more thoroughly.
  • this mode of operation ensures, at the time intervals with volume flows of 15 l / min, that the circulating pump is not damaged because it heats up too much.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP14401002.2A 2013-01-30 2014-01-08 Procédé de fonctionnement d'un lave-linge avec un dispositif de recirculation Active EP2762631B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102013100908.5A DE102013100908A1 (de) 2013-01-30 2013-01-30 Verfahren zum Betreiben einer Waschmaschine mit Umfluteinrichtung und Waschmaschine

Publications (2)

Publication Number Publication Date
EP2762631A1 true EP2762631A1 (fr) 2014-08-06
EP2762631B1 EP2762631B1 (fr) 2016-04-06

Family

ID=50150674

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14401002.2A Active EP2762631B1 (fr) 2013-01-30 2014-01-08 Procédé de fonctionnement d'un lave-linge avec un dispositif de recirculation

Country Status (2)

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EP (1) EP2762631B1 (fr)
DE (1) DE102013100908A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017021101A1 (fr) * 2015-08-04 2017-02-09 BSH Hausgeräte GmbH Appareil d'entretien du linge pourvu d'un système à circulation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1783264A2 (fr) * 2005-11-04 2007-05-09 Fisher & Paykel Appliances Ltd. Améliorations concernant les machines à laver
US20110138543A1 (en) * 2009-12-14 2011-06-16 Electorux do Brasil S.A. Method and washing machine provided with recirculation with controlled flow
EP2426246A1 (fr) 2010-09-01 2012-03-07 Miele & Cie. KG Procédé de fonctionnement d'un lave-linge, dispositif d'écoulement et lave-linge

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101590371B1 (ko) * 2009-02-16 2016-02-02 엘지전자 주식회사 세탁물 처리기기 및 세탁방법
DE102009026825A1 (de) * 2009-06-08 2010-12-09 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Behandeln von Wäsche durch Beförderung von Waschlauge zwischen Laugenbehältern in einer Waschmaschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1783264A2 (fr) * 2005-11-04 2007-05-09 Fisher & Paykel Appliances Ltd. Améliorations concernant les machines à laver
US20110138543A1 (en) * 2009-12-14 2011-06-16 Electorux do Brasil S.A. Method and washing machine provided with recirculation with controlled flow
EP2426246A1 (fr) 2010-09-01 2012-03-07 Miele & Cie. KG Procédé de fonctionnement d'un lave-linge, dispositif d'écoulement et lave-linge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017021101A1 (fr) * 2015-08-04 2017-02-09 BSH Hausgeräte GmbH Appareil d'entretien du linge pourvu d'un système à circulation

Also Published As

Publication number Publication date
EP2762631B1 (fr) 2016-04-06
DE102013100908A1 (de) 2014-07-31

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