EP3090088B1 - Waschmaschine und verfahren zur steuerung einer waschmaschine - Google Patents

Waschmaschine und verfahren zur steuerung einer waschmaschine Download PDF

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Publication number
EP3090088B1
EP3090088B1 EP14735590.3A EP14735590A EP3090088B1 EP 3090088 B1 EP3090088 B1 EP 3090088B1 EP 14735590 A EP14735590 A EP 14735590A EP 3090088 B1 EP3090088 B1 EP 3090088B1
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EP
European Patent Office
Prior art keywords
laundry
washing
water
phase
phases
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EP14735590.3A
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English (en)
French (fr)
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EP3090088A1 (de
Inventor
Andrea Zattin
Elisa Stabon
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Electrolux Appliances AB
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Electrolux Appliances AB
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Priority claimed from PCT/EP2013/078134 external-priority patent/WO2015101390A1/en
Priority claimed from PCT/EP2013/078135 external-priority patent/WO2015101391A1/en
Priority claimed from PCT/EP2013/078133 external-priority patent/WO2015101389A1/en
Application filed by Electrolux Appliances AB filed Critical Electrolux Appliances AB
Priority to EP14735590.3A priority Critical patent/EP3090088B1/de
Priority claimed from PCT/EP2014/064414 external-priority patent/WO2015101425A1/en
Publication of EP3090088A1 publication Critical patent/EP3090088A1/de
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Publication of EP3090088B1 publication Critical patent/EP3090088B1/de
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    • 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 
    • D06F39/007—Arrangements of water softeners
    • 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
    • D06F34/28—Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress
    • D06F34/30—Arrangements for program selection, e.g. control panels therefor; Arrangements for indicating program parameters, e.g. the selected program or its progress characterised by mechanical features, e.g. buttons or rotary dials

Definitions

  • softened water has a reduced hardness degree which is lower or equal than about 2 FH.
  • mix water has a reduced hardness degree which is greater than, or equal to about 15 FH, and lower than, or equal to about 25 FH.
  • said water softening system comprises a water-softening agent container, which is filled with a given amount of ion-exchange resins capable to restrain the calcium and/or magnesium ions dissolved in the fresh water flowing across the water-softening agent container, and a regeneration-agent reservoir which is structured for receiving a given amount of salt grains and is designed to uses brine to periodically regenerate said ion-exchange resins contained in said water-softening agent container.
  • the water softening system comprises at least a system based on capacitive deionization technology.
  • a laundry care washing program comprises a cotton care washing program, in which: the main wash phase is a softened water washing phase, the first rinse phase is a softened water washing phase, second rinse phase is a mix water washing phase, and the final rinse phase is a mix water washing phase.
  • electronic control means are configured to control said water softening system based on said input laundry information, in order to supply water to the detergent dispensing assembly and/or to the washing tub during all the washing phases, wherein said supplied water has a hardness degree lower than said fresh water.
  • the revolving drum 4 is housed in axially rotating manner inside the washing tub 3 with its front opening directly faced/aligned to the laundry loading/unloading opening on the front wall 2a of casing 2, and the drum rotation axis is preferably arranged locally substantially coincident with the substantially horizontally-oriented longitudinal reference axis of washing tub 3.
  • the hollow washing tub 3 is preferably suspended in floating manner inside the casing 2 via a suspension system preferably, though not necessarily, comprising a couple of upper coil springs (non illustrated) connecting the upper portion of the washing tub 3 to the top of the boxlike casing 2, and a couple of lower vibration dampers (not illustrated) connecting the bottom portion of the washing tub 3 to the bottom of the boxlike casing 2.
  • a suspension system preferably, though not necessarily, comprising a couple of upper coil springs (non illustrated) connecting the upper portion of the washing tub 3 to the top of the boxlike casing 2, and a couple of lower vibration dampers (not illustrated) connecting the bottom portion of the washing tub 3 to the bottom of the boxlike casing 2.
  • the laundry washing machine 1 furthermore comprises a porthole door 5 which is hinged to the front wall 2a of casing 2 to rotate about a preferably, though not necessarily, vertically-oriented reference axis to and from a closing position in which the peripheral border of the porthole door 5 rests completely on front wall for closing the laundry loading/ unloading opening and watertight sealing the washing tub 3; and an electrically-powered motor assembly 6 which is structured for driving into rotation the revolving drum 4 about its longitudinal reference axis inside the washing tub 3, by means of a belt/pulley system 7.
  • the motor 6 may be directly associated with the shaft of the revolving drum 4.
  • washing tub 3, the drum 4, the suspension system, the electrically-powered motor assembly 6, the heating device 11, and the water draining system 8 of the laundry washing machine 1 are well-known elements provided in well-known laundry machine and detailed description thereof will be omitted accordingly.
  • water mains 13 With the term fresh water, it will be understood a tap water provided by a water mains 13 usually arranged in a house. It should be understood that water mains 13 generally provides an "hard water", i.e. a water having a hardness degree greater than about 25 FH (250 ppm CaCo3).
  • the main laundry wash phase may comprises, for example: a wetting phase (step of loading water and detergent into the washing tub), a maintenance phase (step of tumbling the laundry for detergent action) and preferably, although not necessarily, a spin phase (step of spinning the drum). If the program to be performed uses heated water, the main laundry wash phase can further comprise a heating phase (step of switching-on the heating device 11).
  • the main laundry wash phase may further comprises a drain phase (step of draining water). It should be point out that drain phase is the last phase of the main laundry wash phase, and is performed before executing the first rinse phase of the secondary laundry wash phases following the main laundry wash phase.
  • Rinse phases following the main laundry wash phase may comprise a water loading phase (loading water into the washing tub), a rinse maintenance phase (tumbling the laundry), a drain phase, and preferably a spin phase.
  • softened water laundry wash phase it will be understood a laundry wash phase wherein softened water is supplied into the washing tub 3.
  • fresh water laundry wash phase it will be understood a laundry wash phase wherein fresh water is supplied into the washing tub 3.
  • mix water laundry wash phase it will be understood a laundry wash phase wherein mix water is supplied into the washing tub 3.
  • fresh water laundry washing program it will be understood a laundry washing program wherein all the wash phases comprise the step of supplying fresh water into the washing tub 3.
  • softened water laundry washing program it will be understood a laundry washing program comprising at least a softened water laundry washing phase or at least a mix water laundry washing phase.
  • the main wash phase of a softened washing program comprises the step of supplying softened water or mix water.
  • the secondary wash phase of a softened water laundry washing program comprises the step of supplying softened or mix or fresh water.
  • laundry care washing program it will be understood a laundry washing program comprising laundry wash phases in order to improve the laundry care and reduce the greying phenomenon of the laundry.
  • a “laundry care washing program” may be configured in order to supply softened or mix water during the main wash phase, and preferably supply softened or mix water during one or more secondary laundry wash phases (rinse/spin phases) so as to perform corresponding "softened/mix water laundry wash phase/s”.
  • detergent dispensing assembly 12 may be structured for selectively spilling/pouring a given amount of fresh water arriving from a fresh water mains 13 directly into the detergent drawer 12a, so as to flush the detergent, out of the same detergent drawer 12a so that detergent mixed with water is loaded into the washing tub 3.
  • the detergent dispensing assembly 12 may have an auto-dosing system/structure. i.e. it is provided with an auto-dosing detergent device 12b designed to automatically control the amount of detergent supplied to into the washing tub 3.
  • the auto-dosing detergent device 12b may comprise for example one or more detergent metering pumps (not illustrated), i.e. volumetric pumps for the metered feed of the detergent/water into the washing tub 3 based on control signals.
  • the water softener system 14 may be structured to be activated/controlled so as to operate between a first operating state, wherein it provide softened water, and a second operating state, wherein it provides fresh water. It should be understood however that other kind of water softener systems may be contemplated. As can be appreciated, the present invention can be conveniently applied to a water softener system which may be activated/controlled so as to selectively operate, in addition to the first and second operating states above disclosed, further in a third state wherein it provides mix water.
  • the water softener system 14 may be designed to vary the hardness degree of the softened water and/or mix water, based on received control/command signals.
  • the water softener system 14 may comprise a fresh water supply circuit 16, which is arranged inside the casing 2 between the water mains 13 and the detergent dispensing assembly 12 or between the water mains 13 and directly the washing tub 3, and may be structured so as to control/regulate the flow of fresh water from the water mains 13 towards the detergent dispensing assembly 12 and/or the washing tub 3.
  • a fresh water supply circuit 16 which is arranged inside the casing 2 between the water mains 13 and the detergent dispensing assembly 12 or between the water mains 13 and directly the washing tub 3, and may be structured so as to control/regulate the flow of fresh water from the water mains 13 towards the detergent dispensing assembly 12 and/or the washing tub 3.
  • the machine 1 may preferably although not necessarily comprise an electric controlled flow diverter device 24 which is connected between the water softener system 14 and the detergent dispensing assembly 12/the washing tub 3, and is designed to receive fresh or softened or mix water from the water softener system 14 and selectively supply, on command, the received water to the detergent dispensing assembly 12 or the washing tub 3.
  • an electric controlled flow diverter device 24 which is connected between the water softener system 14 and the detergent dispensing assembly 12/the washing tub 3, and is designed to receive fresh or softened or mix water from the water softener system 14 and selectively supply, on command, the received water to the detergent dispensing assembly 12 or the washing tub 3.
  • the water softener system 14 may comprise any other known device/system designed to selectively supply the received water to the detergent dispensing assembly 12 or the washing tub 3.
  • the water softener system 14 further comprise an internal water softening device 18, which may be arranged along the fresh water supply circuit 16 between the water mains 13 and the detergent dispensing assembly 12, or the flow diverter device 24 if presents, so as to be crossed by the fresh water flowing from the water mains 13 towards the detergent dispensing assembly 12 or directly towards the washing tub 3, and is structured to reduce the hardness degree of the fresh water drawn from the water mains 13 so as to provide the softened water to be channeled to the detergent dispensing assembly 12 or directly to the washing tub 3.
  • an internal water softening device 18 which may be arranged along the fresh water supply circuit 16 between the water mains 13 and the detergent dispensing assembly 12, or the flow diverter device 24 if presents, so as to be crossed by the fresh water flowing from the water mains 13 towards the detergent dispensing assembly 12 or directly towards the washing tub 3, and is structured to reduce the hardness degree of the fresh water drawn from the water mains 13 so as to provide the softened water to be channeled to the detergent dispensing assembly 12 or directly
  • the fresh water supply circuit 16 may preferably comprise a hosepipe 19 connecting the water mains 13 to the inlet of the detergent dispensing assembly 12 or to the washing tub 3, an electrically-controlled valve 20 which is arranged along the hosepipe 19 and is able to control/regulate the flow of fresh water from the water mains 13 towards the detergent dispensing assembly 12 or to the washing tub 3; a hosepipe 21 connecting the water mains 13 to the inlet of water softening device 18 which in turn has the outlet connected to the hosepipe 19 or directly to the detergent dispensing assembly 12 by means of a hosepipe 22; an electrically-controlled valve 23a, which is arranged along the hosepipe 21 and is designed to control/regulate the flow of fresh water from the water mains 13 towards the inlet of the water softening device 18 based on a control signal in order to cause the water softening device 18 to regulate/reduce the hardness degree of the softened water provided in its outlet; and preferably
  • the electrically-controlled valves 20 and/or 23a and/or 23b may be on-off electric valves configured to be selectively controlled/activated so as to cause the softened, fresh or mix water to be selectively supplied to the detergent dispensing assembly 12/washing tub 3. It should be understood that electrically-controlled valves 20 and/or 23a and/or 23b may be controlled to selectively regulate the volume (liters) of fresh water crossing the hosepipe 19, and/or crossing the softening device 18 and/or the volume of water that the water softening device 18 provides to the hose 19 in order to mix the fresh water and softened water so as to provide mix water having a determined hardness degree.
  • the electrically-controlled valves 20 and/or 23a and/or 23b could be controlled so that the hardness degree of the softened or mix water is regulated based on a required value. It should in any case be understood that control of the hardness degree of the water may be not limited to the circuit above disclosed.
  • the electrically-controlled valve 20, 23a, 23b may be not limited to on-off electric valves but according to possible different embodiments of the present invention, the electrically-controlled valve 20, 23a, 23b may be proportional valve or other kind of known valve electrically designed to be controlled to regulate a water flow rate.
  • the laundry washing machine 1 may preferably, although not necessarily, comprise an electronic sensing system 32, which may comprise a number of sensor devices arranged along the hosepipes 19, 21, 22 to determine/measure hardness values which are indicative of the hardness degree of: the fresh water provided from the water mains 13 and/or the softened water provided in outlet by the water softening device 18, and/or the fresh/softened/mix water provided by the water softening system 14.
  • an electronic sensing system 32 may comprise a number of sensor devices arranged along the hosepipes 19, 21, 22 to determine/measure hardness values which are indicative of the hardness degree of: the fresh water provided from the water mains 13 and/or the softened water provided in outlet by the water softening device 18, and/or the fresh/softened/mix water provided by the water softening system 14.
  • the sensor devices may be conductometric sensors arranged along the hosepipes 19, 21, 22 upstream from the detergent dispensing assembly 12.
  • the water softening device 18 may be a ion-exchange device type.
  • the water softening device 18 may comprise a water-softening agent container 25, which is filled with a given amount of ion-exchange resins (not shown) capable to restrain the calcium and/or magnesium ions (Ca++ an Mg++) dissolved in the fresh water flowing across the water-softening agent container 25 and is preferably interposed between the hosepipes 21 and 22 to be crossed by the fresh water flowing from the valve 23a and the hosepipe 21.
  • the water softening device 18 may further comprise a regeneration-agent reservoir 26 which to structured for receiving a given amount (for example half a Kilogram or one Kilogram) of salt grains NaCl (Sodium Chloride) and is designed to uses brine (i.e. saturated salty water) to periodically regenerate the ion-exchange resins contained in the water-softening agent container 25.
  • Salty water in fact, is able to replace from the ion-exchange resins the calcium and magnesium ions previously combined/fixed to the resins with Sodium ions (Na+).
  • the internal water softening device 18 may further preferably although not necessarily comprise: a water supply circuit 21a which is structured for selectively channeling, on command, a given amount of fresh water into the water-softening agent container 25 and regeneration-agent reservoir 26 so to at least partly dissolve the salt or other regeneration agents stored therein and form a given amount of brine (i.e.
  • a electrically-controlled valve 20a which is arranged along a hosepipe of the water supply circuit 21a and is designed to control/regulate the flow of fresh water from the water mains 13 towards regeneration-agent reservoir 26, an electrically-powered brine-circulating pump 26a which is interposed between the water-softening agent container 25 and the regeneration-agent reservoir 26 and is structured for transferring/moving the brine (i.e. the salt water) from the regeneration-agent reservoir 26 to the water-softening agent container 25 when activated.
  • brine i.e. the salt water
  • Ion-removal internal water softening devices are disclosed, for example, in reference documents WO 2006 079 417 and/or EP 0 861 114 wherein a ion-removal internal water softening device comprised a system based on capacitive deionization technology which comprises electrodes having a conductive surface. The electrodes are chargeable in response to an applied DC potential. The electrodes are separated from each other by non-conductive spacers. The electrodes and the conductive surface on the electrodes may be constructed from conductive materials such as carbon or conductive polymers or combinations. Because the electrodes of the system based on capacitive deionization technology have a limited absorption capacity, the system requires regeneration, to remove the ions absorbed on the electrodes.
  • the system based on capacitive deionization technology may be regenerated by flushing with fresh water, reversing the polarity the anode electrodes with the cathode electrodes .
  • the interval for regeneration is also dependent on the concentration of ions in the feed water; the harder the feed water, the more frequent regeneration is required.
  • the water produced during regeneration phase contains a high level of hardness (ions) and is therefore directed to a drain.
  • the system based on capacitive deionization technology thereby provides water softening without addition or with a limited amount of chemicals for regeneration.
  • water softening device 18 is not limited only to ion-removal devices type, but according to other possible embodiments of the present invention, it may comprise any kind of device/apparatus operating according to known water softening technologies.
  • the water softening device 18 may comprise: reverse osmosis systems/devices, nano-filtration systems/devices, distillation systems/devices such as membrane distillation systems/devices, boiling systems/devices, capacitive deionization systems/devices, electro-dialysis systems/devices and similar, enzymatic systems which are known and detailed description thereof will be omitted accordingly.
  • the laundry washing machine 1 comprises an electronic control unit 15 which is electrically connected to the control panel 28 in order to receive the information inputted by the user.
  • control panel 28 may be structured/configured to allow the user to select a laundry washing program among one or more of preset laundry care washing programs, i.e. cotton care washing program, synthetic care washing program (Polyamide PA, viscose, etc%), delicates care washing program, wool care washing program.
  • Data relating to selectable/performable laundry care washing program/s may be preferably contained in a memory device 27 or any similar apparatus cooperating with the electronic control unit 15, and may comprise information associated with the kind of water (softened/fresh/mix), and/or hardness degree of the water to be supplied during each laundry washing phases of a laundry care washing program.
  • one or more laundry care washing program may be programmed so as to perform a fresh water laundry washing phase during the main wash phase, and one or more mix water laundry washing phase/s and/or one or more softened water laundry washing phases during the secondary wash phases (Laundry care washing program F in Figure 4 ).
  • one or more laundry care washing program may be programmed so as to perform a mix or softened water laundry washing phase during the main wash phase, and one or more mix or softened or fresh water laundry washing phase/s during the secondary wash phases (Laundry care washing program C and D in Figure 4 ).
  • one or more laundry care washing program may be programmed so as to perform softened water laundry washing phases during both the main and the second wash phases (Laundry care washing program N in Figure 4 ).
  • softened, mix and fresh water laundry wash phases os a laundry care washing program may have combinations/sequences which are different to the above disclosed examples.
  • memorized data of a "cotton care washing program” may comprise the following information: the main wash phase is a softened water washing phase, the first rinse phase is a softened water washing phase, second rinse phase is a softened water washing phase, and the last rinse phase is a mix water washing phase.
  • memorized of a "polyamide care washing program” may comprise the following information: the main wash phase is a softened water washing phase, the first rinse phase is a mix water washing phase, the second rinse phase is a mix water washing phase, and the last rinse phase is a mix water washing phase.
  • memorized of a "polyamide care washing program” may comprise following information: the main wash phase is a softened water washing phase, the first rinse phase is a softened water washing phase, the second rinse phase is softened water washing phase, and the last rinse phase is a mix water washing phase.
  • memorized data relating to a "polyester care washing program” may comprise following information: the main wash phase is a mix water washing phase, the first rinse phase is a mix water washing phase, the second rinse phase is a mix water washing phase, and the last rinse phase is a mix water washing phase.
  • memorized data of a "polyester care washing program” may comprise the following information: the main wash phase is a mix water washing phase, the first rinse phase is a fresh water washing phase, the second rinse phase is a fresh water washing phase, and the last rinse phase is a fresh water washing phase.
  • FIG 4 illustrates a table which comprise on a column a number of laundry care washing programs A, B, ... , N which could be implemented by the machine 1.
  • laundry care washing programs may be preferably configured so that: during the main wash phase, the softener system 14 is activated/controlled in the first operating state in order to provide/supply a softened or mix water so as to perform a softened or mix water washing phase, whereas during the secondary washing phase following the main wash phase i.e.
  • the softener system 14 is controlled in order to selectively operate in the first or second or third state so as to provide softened, or fresh or mix water, respectively in order to perform softened water washing phase, or fresh water washing phase and the mix water washing phase.
  • one or more performable laundry care washing programs may be programmed so that the first rinse phase is a softened water washing phase, whereas other performable laundry care washing programs may be programmed so that the last rinse phase is a fresh water washing phase.
  • one performable laundry care washing program i.e. a cotton care washing program may be programmed so that all the laundry wash phases, e.g. the main wash phase and secondary laundry wash phases correspond to softened water wash phases.
  • the washing machine 1 may be provided with a control panel 28 structured/configured to allow the user to input first information indicative of a fresh water washing program to be performed, and second information indicative of one or more laundry care commands.
  • the electronic control unit 15 is configured to determine/set the laundry care washing program based on received first and second information.
  • the control panel 28 may be configured to allow operator to input said second information indicative of a laundry care commands associated to kind of laundry to be washed.
  • the control panel 28 may be configured to allow operator to input said second information indicative of a laundry care commands which are associated to fabric/textile of the laundry, i.e. cotton, polyamide or the like.
  • the electronic control unit 15 is configured to set/determine the laundry care program based on the selected fresh water laundry washing program and said laundry care commands.
  • control panel 28 may comprise a first select part 28a configured to allow the user to select a fresh water washing program among one or more fresh water washing programs; and a second select part 28b is configured to allow the user to input one or more laundry care commands characterizing/defining the kind of laundry to be washed. i.e. the fabric/textile of the laundry.
  • the information associated with the fresh water washing programs selected by the first select part 28a may be contained in form of data memorized in the memory device 27.
  • the electronic control unit 15 may be configured to determine/set the laundry care washing program to be performed, based on the first information indicating the selected fresh water washing program and the second information relating to the selected laundry care commands that user has selected/requested.
  • the electronic control unit 15 may set/determine the laundry care washing program by switching/replacing one or more fresh water washing phases of said selected fresh water laundry washing program, with one or more softened water laundry washing phases and/or mix water laundry washing phases, based on said laundry care commands.
  • the first select part 28a may comprise a rotation knob for supplying the selected signal containing the first information after sensing whether a program is selected through rotation
  • the second select part 28b may comprise one or more buttons B1 ,BN for supplying the selected signal containing the second information after sensing whether a laundry care command has been selected.
  • the first select part 28a and second select part 28b are not limited to the example illustrated in Figure 5 , but could comprise other kind of known input devices such as, for example, a touch panel/s.
  • the electronic control unit 15 may set the "standard" fresh-water washing program so as to load the fresh water during all the washing phases.
  • the electronic control unit 15 determine the laundry care information associated with the button and modifies the fresh water washing program in the "laundry care washing program" by changing/switching/replacing the kind of water to be supplied during the washing phases.
  • Kind of water (mix or soft or fresh) to be supplied during the washing phases may be determined by the electronic control unit 15 on the basis of the laundry information associated with the pushed button B1,...,BN.
  • buttons of the second select part 18b may be configured to cooperate with the electronic control unit 15 in order to allow the user to select combinations of the kind of fabric of the laundry in order to define the more suitable laundry care washing program.
  • the electronic control unit 15 and control panel 28 may be configured in order that the user may change the kind of water (mix or softened or fresh) so as to set laundry care washing program, by repeatedly pressing a determined button a prefixed number of times. For example, pressing repeatedly the button B1 twice may cause the softened water to be supplied during the main wash phase, pressing repeatedly the button B2 twice may cause the softened water to be supplied during the first rinse phase, pressing repeatedly the button B3 twice may cause the softened water to be supplied during the second rinse phase.
  • the control panel 28 may be configured so that button B 1, BN may cause selection of any prefixed combination of mix or softened or fresh water in washing phases.
  • control panel 28 may have one button and be configured so that change of kind of water (mix or softened or fresh) in washing phases may be determined based on number of time that button is repeatedly pressed.
  • Figures 7 and 8 illustrate a third exemplary embodiment which differs from the second embodiment because the first select part 28a is configured to allow the user to select a laundry washing program among a plurality of softened water washing programs, and the second select part 28b is configured to allow the user to select a laundry care command/function.
  • Information about softened water washing programs may be contained in memory device 27 and comprise data relating to kind of water (softened, mix and fresh water) to be supplied during the washing phases.
  • the softened water laundry washing program comprises at least a softened water laundry washing phase or mix water washing phase.
  • the electronic control unit 15 may be configured to set the laundry care washing program based on the first information indicating the selected softened water washing program and the second information relating to the laundry care command/function that user has requested by means of the second select part 28b.
  • the first select part 28a may comprise a rotation knob
  • the second select part 28b may comprise at least one button for supplying the selected signal containing the second information, i.e. laundry care command/s and/or functions.
  • the electronic control unit 15 may perform the softened water washing program selected by user, so as to load the softened water during the prefixed laundry washing phases.
  • the electronic control unit 15 is further configured to determine/set the laundry care washing program by replacing one or more mix or fresh water washing phases of the softened water washing program with softened water washing phases ad/or mix water laundry washing phases respectively, based on said laundry care commands, and control said water softening system 14 in response to the set laundry care washing program to supply softened water during at least the main laundry wash phase and/or softened/mixed water during one or more of the secondary laundry wash phase/s.
  • electronic control unit 15 When the button is not pushed, electronic control unit 15 performs the softened water washing program selected by the first select part 28a.
  • the electronic control unit 15 and control panel 28 may be configured in order that the user may select the laundry care commands, by repeatedly pressing a determined button a prefixed number of times. For example pressing repeatedly the button twice may cause the softened water washing program to be modified in a high care washing program. In that case, for example, the electronic control unit 15 may change the fresh water supplied during a prefixed wash phase of the softened water washing program with a mix water. For example pressing repeatedly the button three times may cause the softened water washing program to be modified in a top care washing program. In that case, for example, the electronic control unit 15 may change the mix water supplied during a prefixed wash phase of the softened water washing program with a softened water.
  • step 110 user inputs via the control panel 28 the information indicative of the laundry care washing program to be performed.
  • user could select directly the laundry care washing program among one or more memorized washing programs as illustrated in the example of Figures 1 and 3 , or inputs the first and second information as illustrated in the second embodiment of Figure 5 or the third embodiment of Figure 7 .
  • the electronic control unit 15 determines in the memory device 27 all data/information about the kind of water (softened or mix or fresh water) and/or the prefixed hardness of the water, to be supplied during each laundry washing phase, i.e. main wash phase and the rinse phases of the selected laundry washing program, based on the set laundry care washing program (step 120).
  • step 130 electronic control unit 15 may start performing the main wash phase of the laundry care washing program.
  • a laundry care washing program i.e. cotton care washing program
  • the main wash phase is performed by using softened water
  • the secondary wash phases using softened water.
  • the electronic control unit 15 activates/controls the softener system 14 so as to supply a softened water into the detergent dispensing system 12 to cause the detergent to be flushed from the detergent dispensing system 12 into the washing tub 3.
  • the electronic control unit 15 may preferably although not necessarily control the valves 20, and/or 23a and/or 23b so as to selectively regulate flows/volumes of fresh water crossing the hosepipes 19, 21 and 22 and passing through the water softening agent container 25, based on the amount of softened water to be supplied and/or the hardness degree of the softened water.
  • the electronic control unit 15 may control the valves 20, and/or 23a and/or 23b based on a comparison between the prefixed hardness degree and the measured water hardness degree.
  • the electronic control unit 15 may control the auto-dosing device 12b to automatically supply a prefixed detergent amount into the washing tub 3.
  • the main wash phase may comprise a drum tumbling step, wherein electronic control unit 15 controls the electric motor assembly 6 so as to rotate the drum 4 such that the laundry is tumbled/wetted and detergent is dissolved in the softened water loaded in the tub 3 (step 150).
  • the electronic control unit 15 may further control the softener system 14 in order to supply softened water directly to the washing tub 3 until a prefixed water level is reached.
  • electronic control unit 15 could control the flow diverter, if present, to supply softened water directly to the washing tub 3.
  • the electronic control unit 15 may continue to control the rotation of the drum 4 to perform the tumbling movements of the laundry inside of the drum 4 and preferably starts heating step wherein it preferably controls the heating device 11 (step 160).
  • step 170 the electronic control unit 15 preferably switches off the heating device 11 if the latter is on, and starts performing a maintenance phase wherein the rotation of drum 4 is controlled in order to perform the tumbling movements of the laundry inside of the drum 4.
  • step 180 the main wash phase, performs drain and preferably, although not necessarily spin steps.
  • the electronic control unit 15 controls the water draining system 8 to drain the washing water from the washing tub 3, whereas in the spin step the electronic control unit 15 preferably controls the motor assembly 6 so as to spin the drum 4 at high speed one or more times.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Claims (14)

  1. Waschmaschine (1), Folgendes umfassend:
    ein Außengehäuse (2),
    einen Waschbottich (3), der im Inneren des Gehäuses (2) angeordnet ist,
    eine drehbare Trommel (4), die in axial drehender Weise in dem Waschbottich (3) angeordnet und dafür gestaltet ist, zu waschende Wäsche aufzunehmen,
    eine Waschmittelausgabeanordnung (12), die dafür gestaltet ist, dem Waschbottich (3) Waschmittel zuzuführen,
    ein Wasserenthärtungssystem (14), das dafür gestaltet ist, Frischwasser von einer Hauptwasserleitung (13) aufzunehmen und den Härtegrad des Frischwassers zu verringern, um während einer oder mehrerer Waschphasen mit enthärtetem Wasser beziehungsweise während einer oder mehrerer Waschphasen mit Mischwasser der Waschmittelausgabeanordnung (12) und/oder dem Waschbottich (3) enthärtetes Wasser oder Mischwasser zuzuführen, wobei das Mischwasser eine Mischung aus Frischwasser und enthärtetem Wasser ist,
    eine Steuertafel (28), die dafür konfiguriert ist, zu ermöglichen, dass ein Bediener Informationen eingibt, die in Verbindung mit zu waschender Wäsche stehen,
    elektronische Steuermittel (15), die dafür konfiguriert sind, Wäscheinformationen zu empfangen und das Wasserenthärtungssystem (14) zu steuern, um basierend auf den eingegebenen Wäscheinformationen eine oder mehrere Waschphasen mit enthärtetem Wasser und/oder eine oder mehrerer Waschphasen mit Mischwasser eines Waschprogramms auszuführen,
    dadurch gekennzeichnet, dass sie Folgendes umfasst:
    Speichermittel, die Daten bezüglich eines oder mehrerer Wäschepflege-Waschprogramme enthalten, wobei die gespeicherten Daten ein Laden enthärteten Wassers oder Frischwassers oder Mischwassers in die Waschmittelausgabeanordnung und/oder den Waschbottich während entsprechender Waschphasen der Wäschepflege-Waschprogramme angeben,
    die elektronischen Steuermittel ferner dafür konfiguriert sind, das Wasserenthärtungssystem basierend auf dem ausgewählten Wäschepflege-Waschprogramm wahlweise zu steuern /zu aktivieren.
  2. Waschmaschine (1) nach Anspruch 1, wobei die Wäscheinformationen mit der Textilie der zu waschenden Wäsche in Verbindung stehen.
  3. Waschmaschine (1) nach Anspruch 1 oder 2, wobei die Steuertafel (28) dafür konfiguriert ist, zu ermöglichen, dass ein Bediener ein Waschprogramm aus einem oder mehreren festgelegten Wäschepflege-Waschprogrammen auswählt, wobei die Wäschepflege-Waschprogramme eine oder mehrere Waschphasen mit enthärtetem Wasser und/oder eine oder mehrere Waschphasen mit Mischwasser umfassen.
  4. Waschmaschine (1) nach einem der vorhergehenden Ansprüche, wobei das Waschprogramm eine Hauptwaschphase und eine oder mehrere sekundäre Waschphasen nach der Hauptwaschphase umfasst, wobei die Hauptwaschphase mindestens eine Befeuchtungsphase, eine Aufrechterhaltungsphase und eine Ablaufphase umfasst, wobei die sekundären Waschphasen eine oder mehrere Spülphasen umfassen, die nach dem Ende der Ablaufphase der Hauptwaschphase beginnen.
  5. Waschmaschine (1) nach Anspruch 4, wobei die festgelegten Wäschepflege-Waschprogramme Folgendes umfassen: Ausführen einer Waschphase mit Frischwasser während der Hauptwaschphase und Ausführen einer oder mehrerer Waschphasen mit Mischwasser und/oder einer oder mehrerer Waschphasen mit enthärtetem Wasser während der sekundären Waschphasen.
  6. Waschmaschine (1) nach Anspruch 4, wobei die festgelegten Wäschepflege-Waschprogramme Folgendes umfassen: Ausführen einer Waschphase mit Mischwasser oder enthärtetem Wasser während der Hauptwaschphase und Ausführen einer oder mehrerer Waschphasen mit Mischwasser oder enthärtetem oder Frischwasser während der sekundären Waschphasen.
  7. Waschmaschine (1) nach Anspruch 4, wobei ein festgelegtes Wäschepflege-Waschprogramm das Ausführen von Waschphasen mit enthärtetem Wasser während der Haupt- und der sekundären Waschphasen umfasst.
  8. Waschmaschine (1) nach einem der Ansprüche 5 bis 7, wobei die Steuertafel (28) Folgendes umfasst:
    einen ersten Auswahlteil (28a), der dafür konfiguriert ist zu ermöglichen, dass der Bediener erste Informationen eingibt, die ein Waschprogramm angeben,
    einen zweiten Auswahlteil (28b), der dafür konfiguriert ist zu ermöglichen, dass der Bediener zweite Informationen eingibt, die eine oder mehrere Wäschepflegeanweisungen angeben,
    wobei die elektronischen Steuermittel (15) dafür konfiguriert sind, basierend auf empfangenen ersten und zweiten Informationen ein auszuführendes Wäschepflege-Waschprogramm zu bestimmen/einzustellen.
  9. Waschmaschine (1) nach Anspruch 8, wobei der erste Auswahlteil (28a) dafür konfiguriert ist zu ermöglichen, dass ein Bediener ein Waschprogramm aus einem oder mehreren festgelegten Waschprogrammen mit Frischwasser auswählt, wobei das Waschprogramm mit Frischwasser nur Waschphasen mit Frischwasser umfasst,
    wobei die elektronischen Steuermittel (15) ferner dafür konfiguriert sind, das Wäschepflege-Waschprogramm basierend auf dem ausgewählten Waschprogramm mit Frischwasser und den Wäschepflegeanweisungen einzustellen.
  10. Waschmaschine (1) nach Anspruch 9, wobei die elektronischen Steuermittel (15) ferner dafür konfiguriert sind, das Wäschepflege-Waschprogramm durch Ersetzen einer oder mehrerer Waschphasen mit Frischwasser des ausgewählten Waschprogramms mit Frischwasser durch entsprechende Waschphasen mit enthärtetem Wasser und/oder Waschphasen mit Mischwasser, basierend auf den Wäschepflegeanweisungen, einzustellen und in Reaktion auf das eingestellte Wäschepflege-Waschprogramm das Wasserenthärtungssystem (14) zu steuern.
  11. Waschmaschine (1) nach Anspruch 10, wobei der erste Auswahlteil (28a) dafür konfiguriert ist zu ermöglichen, dass der Bediener ein Waschprogramm aus einem oder mehreren festgelegten Waschprogrammen mit enthärtetem Wasser auswählt, wobei ein Waschprogramm mit enthärtetem Wasser mindestens eine Waschphase mit enthärtetem Wasser oder mindestens eine Waschphase mit Mischwasser umfasst, wobei die elektronischen Steuermittel (15) ferner dafür konfiguriert sind, das Wäschepflege-Waschprogramm basierend auf dem ausgewählten Waschprogramm mit enthärtetem Wasser und den Wäschepflegeanweisungen einzustellen.
  12. Waschmaschine (1) nach Anspruch 11, wobei die elektronischen Steuermittel (15) ferner dafür konfiguriert sind, das Wäschepflege-Waschprogramm durch Ersetzen einer oder mehrerer Waschphasen mit Misch- oder mit Frischwasser des Waschprogramms mit enthärtetem Wasser durch entsprechende Waschphasen mit enthärtetem Wasser und/oder Waschphasen mit Mischwasser, basierend auf den Wäschepflegeanweisungen, zu bestimmen/einzustellen und in Reaktion auf das eingestellte Wäschepflege-Waschprogramm das Wasserenthärtungssystem (14) zu steuern.
  13. Waschmaschine (1) nach einem der vorhergehenden Ansprüche, wobei das Wäschepflege-Waschprogramm ein Polyamidpflege-Waschprogramm umfasst, in dem: die Hauptwaschphase eine Waschphase mit enthärtetem Wasser ist, die erste Spülphase eine Waschphase mit Mischwasser ist, die zweite Spülphase eine Waschphase mit Mischwasser ist, und die letzte Spülphase eine Waschphase mit Mischwasser ist.
  14. Waschmaschine (1) nach einem der vorhergehenden Ansprüche, wobei die elektronischen Steuermittel (15) dafür konfiguriert sind, das Wasserenthärtungssystem (14) basierend auf den eingegebenen Wäscheinformationen zu steuern und der Waschmittelausgabeanordnung (12) und/oder dem Waschbottich (3) während aller Waschphasen Wasser zuzuführen, wobei das zugeführte Wasser einen geringeren Härtegrad als das Frischwasser aufweist.
EP14735590.3A 2013-12-30 2014-07-07 Waschmaschine und verfahren zur steuerung einer waschmaschine Active EP3090088B1 (de)

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PCT/EP2013/078134 WO2015101390A1 (en) 2013-12-30 2013-12-30 Laundry washing machine with water softening system and method for controlling a laundry washing machine
PCT/EP2013/078135 WO2015101391A1 (en) 2013-12-30 2013-12-30 Laundry washing machine with water softening system and method for controlling a laundry washing machine
PCT/EP2013/078133 WO2015101389A1 (en) 2013-12-30 2013-12-30 Laundry washing machine and method for controlling a laundry washing machine
PCT/EP2014/064414 WO2015101425A1 (en) 2013-12-30 2014-07-07 Laundry washing machine and method for controlling a laundry washing machine
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