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EP3701073B1 - Appareil d'entretien du linge équipé d'une commande - Google Patents

Appareil d'entretien du linge équipé d'une commande Download PDF

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Publication number
EP3701073B1
EP3701073B1 EP18789576.8A EP18789576A EP3701073B1 EP 3701073 B1 EP3701073 B1 EP 3701073B1 EP 18789576 A EP18789576 A EP 18789576A EP 3701073 B1 EP3701073 B1 EP 3701073B1
Authority
EP
European Patent Office
Prior art keywords
washing liquid
laundry
temperature value
controller
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.)
Active
Application number
EP18789576.8A
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German (de)
English (en)
Other versions
EP3701073A1 (fr
Inventor
Tyl BECKMANN
Christine Meissner
Steffen Weissbach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Priority to PL18789576T priority Critical patent/PL3701073T3/pl
Publication of EP3701073A1 publication Critical patent/EP3701073A1/fr
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Publication of EP3701073B1 publication Critical patent/EP3701073B1/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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • 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
    • D06F2103/16—Washing liquid temperature
    • 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
    • D06F2103/18—Washing liquid level
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/02—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
    • D06F2105/10—Temperature of washing liquids; Heating means therefor
    • 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
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • D06F2105/48—Drum speed
    • 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 laundry care device with a controller.
  • washing liquid in a tub of the laundry care device is heated by a heating element so that the heated washing liquid of the laundry in the laundry drum is available for a washing process in order to achieve effective laundry care success.
  • the heating element often has to heat the washing liquid to a temperature which is above a desired laundry core temperature of the laundry in order to ensure that the laundry is sufficient is heated. In the case of particularly sensitive textiles, this may damage the laundry.
  • a method for operating a washing machine comprising a washing phase with the heating element switched on for heating the washing liquid and activated flooding device, which conveys the washing liquid from the lower area of the tub to the upper area, based on the operational installation position of the washing machine.
  • EP 2 348 151 A1 discloses a method of operating a washing machine.
  • EP 2 930 261 A1 discloses a method of operating a washing machine.
  • the object on which the invention is based is to specify a laundry care device in which a uniform heating of laundry is ensured in a laundry care device.
  • the object of the invention is achieved by a laundry care device with a tub for receiving washing liquid, the tub having a drain opening and an inlet opening, which are fluidically connected by a liquid line, a laundry drum for receiving of laundry, a drum drive for rotating the laundry drum, a temperature sensor for detecting a temperature of washing liquid in the tub, a heating element for heating the washing liquid, a pump which is designed to pump washing liquid through the drain opening into the liquid line and the pumped out washing liquid through the Inlet opening again to supply the tub in order to wet the laundry in the laundry drum, and a control for controlling the pump, the drum drive and the heating element during a washing process, the control being designed to activate the heating element during a heating phase of the washing process until the detected temperature of the washing liquid in the tub reaches a target temperature value, the control being designed to activate the drum drive during a mixing phase of the washing process following the heating phase in order to rotate the washing drum d to activate the pump in order to circulate the washing liquid and to wet the laundry received
  • the laundry is heated up to the target temperature in the heating phase and the heating element is then deactivated by the controller.
  • washing liquid is pumped out of the tub by the pump and fed back to the tub as part of a pumping over process.
  • the laundry drum is rotated by the drum drive so that the washing liquid introduced by the pumping process hits the laundry and, due to the centrifugal force caused by the rotation of the laundry drum, penetrates the laundry and effectively wets it. This ensures effective heat transfer from the heated washing liquid is ensured on the laundry, so that the laundry is heated evenly, and at the same time the heated washing liquid cools down slightly.
  • the aim of evenly heating the laundry is to obtain the lowest possible temperature difference between the temperature of the laundry and the temperature of the washing liquid at the end of the mixing phase.
  • the control determines a first temperature value at the beginning of the reference time segment and a second temperature value at the end of the reference time segment.
  • the controller determines a temperature difference between the first temperature value and the second temperature value, and the controller then compares the temperature difference with a temperature threshold value. As soon as the temperature difference is less than the temperature threshold value, the control ends the mixing phase, since an effective temperature equalization has been established between the laundry and the washing liquid.
  • the temperature threshold value is selected to be low enough that it ensures that an effective temperature equalization has been established between the laundry and the washing liquid in the laundry care device.
  • Uniform heating of the laundry in the laundry drum can counteract damage to the laundry, and the introduction of heat into the laundry caused by the heating element can be reduced in a targeted manner.
  • a laundry care device is understood to mean a device that is used for laundry care, such as a washing machine or a tumble dryer.
  • a laundry care device is understood to mean a household laundry care device. So a laundry care device, which is used in the context of housekeeping, and with which laundry is treated in household quantities.
  • control is designed to end the washing process when the specific second temperature value of the washing liquid at the end of the mixing phase corresponds to the target temperature value, or the control is designed to end the washing process when the specific second temperature value of the washing liquid at At the end of the mixing phase lies within a variance range of the target temperature value, or the controller is designed to end the washing process when the determined temperature difference between the first temperature value and the second temperature value falls below a further temperature threshold value.
  • control can end the washing process when the determined second temperature value of the washing liquid at the end of the mixing phase lies within a variance range of the target temperature value. This ensures that the control also ends the washing process when the determined second temperature value is only slightly above or only slightly below the target temperature value.
  • the controller can end the washing process when the determined temperature difference between the first temperature value and the second temperature value falls below a further temperature threshold value.
  • the washing process can thus also be ended if only a very flat temperature gradient is determined at the end of the mixing phase and there is no further significant temperature drop.
  • the further temperature threshold value can have a lower temperature difference, in particular of 2 ° C., than the temperature threshold value, which can in particular have a temperature difference of 5 ° C.
  • the washing process is understood to mean that phase of a laundry treatment program until the temperature value of the laundry has reached a predetermined target value, whereby, due to the effective temperature equalization between the laundry and the washing liquid, the temperature value of the laundry can be inferred by measuring the temperature value of the washing liquid.
  • a post-washing process can in principle follow, which preferably takes place without a further heating phase. With the post-washing process, treatment of the laundry with the predetermined temperature value of the laundry can be ensured for a predetermined treatment duration. In addition, the laundry can be moved further during the post-wash process by rotating the laundry drum.
  • the treatment duration of the post-wash process can preferably be established or determined as a function of the duration of the previous wash process, a determined amount of laundry and / or laundry type and / or a selected laundry treatment program. With the post-wash phase, the success of the laundry care and the hygiene requirements can also be advantageously ensured.
  • control is designed to deactivate the pump and the drum drive during a collection phase of the washing process that follows the mixing phase in order to collect washing liquid in the tub if the determined second temperature value of the washing liquid at the end of the mixing phase does not match Corresponds to the target temperature value, or if the determined second temperature value of the washing liquid at the end of the mixing phase is not within a range of variance of the target temperature value or if the determined temperature difference between the first temperature value and the second temperature value does not fall below the further temperature threshold value.
  • the collection phase ensures that the washing liquid collects on an underside of the tub by deactivating the pump and the drum drive. If the determined second temperature value of the washing liquid at the end of the mixing phase does not correspond to the target temperature value, or if the determined second temperature value of the washing liquid at the end of the mixing phase is not within a range of variance of the target temperature value, or if the determined temperature difference between the first temperature value and the second temperature value does not fall below the further temperature threshold value, the controller cannot end the washing process because the laundry has not yet been fully heated by the washing liquid. Instead, the controller must activate another heating phase of the heating element as part of a further washing process. The washing liquid collected in the tub during the collection phase can ensure that the heating element does not run dry during the subsequent further heating phase of the further washing process.
  • the controller is designed to start a further washing process of the laundry care device after the mixing phase or after the collection phase if the determined second temperature value of the washing liquid at the end of the mixing phase does not correspond to the target temperature value or is not within a range of variance of the target temperature value or if the determined temperature difference between the first temperature value and the second temperature value does not fall below the further temperature threshold value, the controller being designed to activate the heating element during a further heating phase of the further washing process until the detected temperature of the washing liquid in the tub reaches a target temperature value, whereby the control is designed to activate the drum drive during a further mixing phase of the further washing process that follows the further heating phase ieren in order to rotate the laundry drum and to activate the pump to circulate the washing liquid and to wet the laundry received in the washing drum with the heated, circulated washing liquid, the control being designed to set a first temperature value at the beginning of a reference time segment of the further mixing phase and on To determine a second temperature value at the end of the reference time segment of the further mixing
  • control ensures that the washing process is not ended if the determined second temperature value of the washing liquid at the end of the mixing phase does not correspond to the target temperature value, or if the temperature gradient is not flat enough, since then the laundry has not yet been completely heated by the washing liquid.
  • the control starts another washing process.
  • the heating element heats the washing liquid again to the target temperature value.
  • the control activates the drum drive again to rotate the washing drum and the control activates the pump again to pump out the washing liquid from the tub and to pump the heated, pumped washing liquid back into the tub.
  • the first and second temperature values and the temperature difference between the first and second temperature values are then determined again.
  • the control ends the further washing process. If this is not the case, the controller repeats the further laundry processes until the determined second temperature value of the washing liquid at the end of the corresponding further mixing phase corresponds to the target temperature value, or until the temperature gradient is sufficiently flat.
  • the laundry care device has a level sensor which is designed to detect a level of washing liquid in the tub, and the laundry care device has a washing liquid supply device for supplying washing liquid into the tub, the control being designed to provide the washing liquid supply device to activate in order to supply washing liquid into the tub when the detected level of washing liquid in the tub falls below a reference level value.
  • washing liquid supply device ensures that washing liquid is supplied promptly when the detected level of washing liquid in the tub falls below a reference level value, so that the heating element can be prevented from running dry.
  • the washing liquid supply device is fluidly connected to the tub through a supply line connected, and comprises the washing liquid supply device in particular a dispensing bowl of the laundry care device.
  • washing liquid supply device can effectively deliver washing liquid to the tub through the supply line. If the washing liquid supply device comprises a dispensing bowl, either water can be supplied as washing liquid through the dispensing bowl to the tub, or laundry care substance mixed with water can be fed to the tub as washing liquid.
  • the laundry care device has a level sensor, which is designed to detect a level of washing liquid in the tub, the control being designed to activate the drum drive in order to spin free washing liquid bound in the laundry and the washing liquid thrown out To supply tub when the detected level of washing liquid in the tub falls below a reference level value.
  • control is designed to activate the drum drive during the mixing phase in order to rotate the laundry drum at least in sections at a rotational speed during the mixing phase and to bring the laundry into contact with the laundry drum.
  • control is designed to activate the drum drive during the mixing phase in order to rotate the laundry drum at a reversing rotation speed, in particular in a reversing direction of rotation that is opposite to the main direction of rotation of the laundry drum during the mixing phase, at least in sections.
  • control is designed to rotate the laundry drum during the reference time segment at the reversing rotation speed and / or in the reversing rotation direction.
  • the laundry care device has a level sensor which is designed to detect a level of washing liquid in the tub, and the controller is designed to activate the heating element during the heating phase when the detected level of washing liquid in the tub exceeds a reference level value.
  • the object according to the invention is achieved by a method for caring for laundry in a laundry care device, the laundry care device having a tub for receiving washing liquid, the tub having a drain opening and an inlet opening which are fluidically connected by a liquid line, wherein the laundry care device a laundry drum for receiving laundry, a drum drive for rotating the laundry drum, a temperature sensor for detecting a temperature of washing liquid in the tub, a heating element for heating the washing liquid, a pump which is designed to pump washing liquid through the drain opening into the liquid line and to supply the pumped washing liquid again through the inlet opening to the tub in order to wet the laundry in the laundry drum, and a control for controlling the pump, the drum drive and the heating element would be nd a washing process, the method comprising the following steps, activating the heating element during a heating phase of the washing process by the controller until the detected temperature of the washing liquid in the tub reaches a target temperature value, activating the drum drive to rotate the washing drum, and the Pump to circulate the washing liquid, during
  • the method comprises the following step of terminating the washing process by the controller if the determined second temperature value of the washing liquid at the end of the mixing phase corresponds to the target temperature value, or if the determined second temperature value of the washing liquid at the end of the mixing phase is within a range of variance of the target temperature value, or if the determined temperature difference between the first temperature value and the second temperature value falls below a further temperature threshold value.
  • the method comprises the following step of deactivating the pump and the drum drive during a collection phase of the washing process that follows the mixing phase by the controller in order to collect washing liquid in the tub when the determined second temperature value of the washing liquid at the end the mixing phase does not correspond to the target temperature value, or if the determined second temperature value of the washing liquid at the end of the mixing phase is not within a range of variance of the target temperature value, or if the determined temperature difference between the first temperature value and the second temperature value does not fall below a further temperature threshold value.
  • the method comprises the following step, starting a further washing process of the laundry care device after the mixing phase or after the collecting phase by the controller if the determined second temperature value of the washing liquid at the end of the mixing phase does not correspond to the target temperature value or does not fall within a range of variance of the target temperature value or if the determined temperature difference between the does not fall below the first temperature value and the second temperature value a further temperature threshold value, the further washing process comprising a further heating phase and a further mixing phase following the further heating phase.
  • FIG. 10 shows a schematic view of a general laundry care device 100, such as a washing machine.
  • the laundry care device 100 comprises a rinsing bowl 101 into which detergent or other liquid substances can be filled.
  • the laundry care device 100 comprises a door 103 for loading the laundry care device 100 with laundry.
  • Fig. 2 shows a schematic view of a laundry care device with a control.
  • the laundry care device 100 has a tub 105 for receiving washing liquid, and has a laundry drum 107 for receiving laundry.
  • the laundry drum 107 has an underside 109 of the drum.
  • the tub 105 has a drain opening 111.
  • the laundry care device 100 has an inlet opening 113.
  • the discharge opening 111 is fluidically connected to the inlet opening 113 by a liquid line 115, a pump 117 for pumping washing liquid through the liquid line 115 being arranged in the liquid line 115.
  • the pump 117 can dispense washing liquid through the drain opening 111 from the tub 105 during an in Fig.
  • the laundry care device 100 further comprises a controller 119 which is connected to the pump 117 by a first control connection 121 and which is connected to a drum drive 123 by a second control connection 125.
  • the controller 119 is designed to control the pump speed of the pump 117 as a function of the detected electrical power value of the pump 117.
  • the laundry care device 100 further comprises an outlet line 127 which is fluidically connected to the liquid line 115.
  • the pump 117 is formed during an in Fig. 2 The pumping process, not shown, is used to pump out washing liquid through the drain opening 111 from the tub 105, through the liquid line 115 and through the outlet line 127 from the laundry care device 100.
  • the controller 119 is with a temperature sensor for detecting a temperature of washing liquid in the tub 105, a heating element for heating the washing liquid in the tub 105, and a filling level sensor for detecting a filling level of washing liquid in the tub 105.
  • Fig. 3 shows a graphic representation of a section of a laundry treatment program according to a first embodiment.
  • Fig. 3 shows a temporal representation of a rotational speed of a laundry drum 107, a temperature of washing liquid in the tub 105, the level of washing liquid in the tub 105, an activation state or deactivation state of the pump 117, and the amount of washing liquid supplied to the tub 105, all along the ordinate axis 131 are plotted as a function of the time in seconds, which is indicated along the abscissa axis 133.
  • the first curve 135 shows the course of the rotational speed of the laundry drum 107.
  • the second curve 137 shows the course of the temperature of washing liquid in the tub 105.
  • the third curve 139 shows the level of washing liquid in the tub 105.
  • the fourth curve 141 shows the activation state or the deactivation state of the pump 117.
  • the fifth curve 143 shows the amount of washing liquid supplied to the tub 105.
  • a washing process 144 carried out in the laundry care device 100 is shown along the abscissa axis 133.
  • washing liquid there is a sufficient amount of washing liquid in the tub 105, which ensures that the heating element arranged in the tub 105 is completely surrounded by washing liquid and that there is no damage caused by the heating element running dry.
  • the controller 119 activates the heating element during the heating phase 145 until the temperature of the washing liquid in the tub 105 reaches a target temperature value 146.
  • the target temperature value 146 is typically selected by the customer or by the laundry treatment program in such a way that when the target temperature value is reached 146 no temperature-related textile damage is to be feared from locally overheated laundry.
  • the drum drive 123 rotates the laundry drum 107 during the heating phase 145.
  • the controller 119 activates the drum drive 123 in order to rotate the laundry drum 107 at an attachment rotational speed 148, whereby the laundry is brought into contact with the laundry drum 107.
  • the control 119 activates the pump 117 during the mixing phase 147 in order to circulate washing liquid and to supply the washing liquid which has been pumped over to the laundry in the laundry drum 107.
  • the washing liquid pumped around by the pump 117 here has a pump-around activity 149.
  • the washing liquid heated by the heating element is supplied to the laundry in the laundry drum 107 and the supplied washing liquid is thrown out of the laundry again by the attachment rotational speed 148.
  • the washing liquid spun out during the mixing phase 147 collects in the tub 105, so that a drum fill level 151 of washing liquid is set in the tub 105.
  • the drum drive 123 does not necessarily have to rotate the laundry drum 107 at the attachment rotational speed 148, but rather the laundry drum 107 can also rotate at a lower rotational speed.
  • drum drive 123 it is possible for the drum drive 123 to rotate the laundry drum 107 at least in sections in a reversing manner during the mixing phase 147, with the reversing direction of rotation being opposite to a main direction of rotation of the laundry drum 107 during the mixing phase 147, and with the laundry drum 107 being rotated in particular at a reversing rotation speed.
  • the heated washing liquid transfers part of its heat to the laundry, so that there is an effective temperature equalization between the washing liquid and the laundry. Because the cooler laundry absorbs heat from the heated washing liquid, the washing liquid in the tub 105 is slightly cooled so that, as shown in the second curve 137, the temperature of the washing liquid drops slightly during the mixing phase 147 and is thus below the Target temperature value 146 is located.
  • the controller 119 determines a first temperature value at the beginning of a reference time segment 153 and the controller 119 determines a second temperature value at the end of the reference time segment 153. The controller 119 then determines the temperature difference between the first temperature value and the second temperature value. The controller 119 ends the mixing phase 147 when the temperature difference between the first temperature value and the second temperature value falls below a temperature threshold value.
  • the temperature threshold value is chosen so low that it is ensured that a temperature difference which falls below the temperature threshold value indicates that an effective heat exchange has taken place between the laundry and the washing liquid and thus a sufficiently flat temperature gradient is present.
  • the controller 119 starts a collection phase 155 following the mixing phase 147 collect pumped washing liquid in the tub 105. This ensures that there is a sufficiently high washing liquid level at the bottom of the tub 105 so that the heating element and temperature sensor are effectively covered with the washing liquid as soon as the washing liquid is heated again.
  • the controller 119 can activate the drum drive 123 again to remove washing liquid from the To spin the laundry free, or a washing liquid supply device can be activated in order to supply washing liquid to the tub 105 again.
  • the laundry care device has an in Fig. 3 fill level sensor, not shown, which is designed to detect a fill level of washing liquid in the tub 105, and the laundry care device has a washing liquid supply device for feeding washing liquid into the tub 105.
  • the controller 119 activates the washing liquid supply device at a supply time 157 when the detected level of washing liquid in the tub 105 falls below a reference level value 159, so that washing liquid can be supplied until the detected level of washing liquid in the Lye container 105 exceeds the reference level value 159 again.
  • the laundry care device 100 starts a further washing process 144-2, the further washing process 144-2 comprising a further heating phase 145-2, during which the controller 119 activates the heating element again, whereby during the further heating phase 145- 2 the detected temperature of the washing liquid corresponds to the target temperature value 146.
  • the controller 119 is designed to end the washing process 144 when the detected temperature of the washing liquid in the tub 105 reaches the target temperature value 146 after the further washing process 144-2.
  • Fig. 4 shows a graphic representation of a section of a laundry treatment program according to a second embodiment.
  • the controller 119 activates the washing liquid supply device at a supply time 157 when the detected level of washing liquid in the tub 105 falls below a reference level value 159.
  • the heating phase 145 and the mixing phase 147 of the washing process 144 correspond to the respective corresponding phases 145, 147 of FIG Fig. 3 shown washing process 144.
  • the temperature of the washing liquid detected by the temperature sensor falls below the target temperature value 146 at the end of the mixing phase 147.
  • the controller 119 carries out a collection phase 155 in order to collect washing liquid in the tub 105, and the controller 119 then carries out further washing processes 144-2, the further washing processes 144-2 further heating phases 145-2 and others Mixing phases 147-2 include.
  • the detected temperature lies within a variance range of the target temperature value 146 and the controller 119 ends the washing processes 144, 144-2.
  • Fig. 5 shows a graphic representation of a laundry care process according to a second embodiment.
  • curves 135, 137, 139, 141 and 143 shown reference is made to FIG Fig. 3 referenced.
  • each of the further washing processes 144-2 comprises a corresponding further heating phase 145-2 and a corresponding further mixing phase 147-2.
  • washing liquid is collected in the tub 105 during respective collection phases 155.
  • the controller 119 activates the washing liquid supply device at a supply time 157 when the detected level of washing liquid in the tub 105 falls below a reference level value 159.
  • the controller 119 determines a first temperature value at the beginning of the respective reference time period 153 and a second temperature value at the end of the respective reference time period 153.
  • the controller 119 compares the temperature difference between the first temperature value and the second temperature value and determines the respective temperature difference between the respective first temperature value and the respective second temperature value.
  • the criterion for the controller 119 to cancel the respective further washing process 144-2 is when the respective determined temperature difference falls below a temperature threshold value.
  • the temperature difference determined by the controller 119 is too great for the controller 119 to be able to terminate, i.e. the temperature gradient is flat enough. Only in the last reference period 153 in time is a small temperature difference determined, which falls below the temperature threshold value, so that the temperature gradient is sufficiently flat for a termination.
  • the controller 119 thus ends the further washing processes 144-2 after the last reference period 153 and no further washing process 144-2 follows.
  • Fig. 6 shows a schematic representation of a method for caring for laundry in a laundry care device.
  • the method 200 comprises, as a first method step, the activation 201 of the heating element during a heating phase 145 of the washing process 144 by the controller 119 until the detected temperature of the washing liquid in the tub 105 reaches a target temperature value 146.
  • the method 200 comprises, as a second method step, activating 203 the drum drive 123 in order to rotate the laundry drum 107 and the pump 117 in order to circulate the washing liquid, during a mixing phase 147 that follows the heating phase 145 by the controller 119 in order to achieve the To wet laundry drum 107 received laundry with the heated pumped washing liquid.
  • the method 200 comprises, as a third method step, determining 205 a first temperature value at the beginning of a reference time segment 153 of the mixing phase 147 and a second temperature value at the end of a reference time segment 153 of the mixing phase 147.
  • the method 200 includes, as a fourth method step, the termination 207 of the mixing phase 147 by the controller 119 when the temperature difference between the first temperature value and the second temperature value falls below a temperature threshold value in order to ensure a uniform temperature distribution in the washing liquid and in the laundry.
  • the method 200 includes, as an optional fifth method step, the termination 209 of the washing process 144 by the controller 119 if the determined second temperature value of the washing liquid at the end of the mixing phase 147 corresponds to the target temperature value 146, or if the determined second temperature value of the washing liquid at the end of the mixing phase 147 within of a variance range of the target temperature value 146, or if the determined temperature difference between the first temperature value and the second temperature value falls below a further temperature threshold value.
  • the method 200 comprises, as an alternative, optional sixth method step, the deactivation 211 of the pump 117 and the drum drive 123 during a collection phase 155 of the washing process 144 that follows the mixing phase 147 by the controller 119 in order to collect washing liquid in the tub 105 when the determined second The temperature value of the washing liquid at the end of the mixing phase 147 does not correspond to the target temperature value 146, or if the determined second temperature value of the washing liquid at the end of the mixing phase 147 is not within a range of variance of the target temperature value 146, or if the determined temperature difference between the first temperature value and the second temperature value is a does not fall below another temperature threshold.
  • the method 200 includes starting 213 a further washing process 144-2 of the laundry care device 100 after the mixing phase 147 or after the collecting phase 155 if the determined second temperature value of the washing liquid at the end of the mixing phase 147 does not or does not correspond to the target temperature value 146 lies within a variance range of the target temperature value 146 or if the determined temperature difference between the first temperature value and the second temperature value does not fall below a further temperature threshold value, the further washing process 144-2 being a further one Heating phase 145-2 and a further mixing phase 147 following the further heating phase 145-2.
  • method step 213 can also be formed by repeating steps 201 to 207. wherein the repetition can be ended when a predetermined period of time has been reached or with step 209.
  • a post-washing process can follow, in which the laundry drum 109 can be rotated analogously to the rotation of the laundry drum 109 in the washing process 144 or 144-02. In particular, no further heating phase is provided in the post-wash cycle.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)

Claims (15)

  1. Appareil d'entretien du linge (100) comprenant un compartiment à lessive (105) pour recevoir du liquide de lavage, dans lequel le compartiment à lessive (105) présente une ouverture d'évacuation (111) et une ouverture d'amenée (113) qui sont reliées en technique de fluide par un tuyau à liquide (115), un tambour à linge (107) pour recevoir du linge, un entraînement de tambour (123) pour faire tourner le tambour à linge (107), un capteur de température pour détecter une température de liquide de lavage dans le compartiment à lessive (105), un élément de chauffage pour chauffer le liquide de lavage, une pompe (117) qui est conçue pour pomper du liquide de lavage dans le tuyau à liquide (115) par l'ouverture d'évacuation (111) et diriger le liquide de lavage pompé de nouveau vers le compartiment à lessive (105) par l'ouverture d'amenée (113), pour mouiller le linge dans le tambour à linge (107), et une commande (119) pour commander la pompe (117), l'entraînement de tambour (123) et l'élément de chauffage pendant une opération de lavage (144), caractérisé en ce que
    la commande (119) est conçue pour activer l'élément de chauffage pendant une phase de chauffage (145) de l'opération de lavage (144) jusqu'à ce que la température détectée du liquide de lavage dans le compartiment à lessive (105) atteigne une valeur de température cible (146), que
    la commande (119) est conçue pour activer l'entraînement de tambour (123) pendant une phase de mélange (147) de l'opération de lavage (144) venant après la phase de chauffage (145), pour faire tourner le tambour à linge (107), et pour activer la pompe (117) pour pomper le liquide de lavage et pour mouiller le linge reçu dans le tambour à linge (107) avec le liquide de lavage pompé chauffé,
    dans lequel la commande (119) est conçue pour déterminer, au début d'un temps de référence (153) de la phase de mélange (147), une première valeur de température du liquide de lavage dans le compartiment à lessive, et en fin du temps de référence (153) de la phase de mélange (147), une deuxième valeur de température, et dans lequel la commande (119) est conçue pour mettre fin à la phase de mélange (147), lorsque la différence de température entre la première valeur de température et la deuxième valeur de température est en-deçà d'une valeur seuil de température pour garantir une répartition uniforme de température dans le liquide de lavage et dans le linge.
  2. Appareil d'entretien du linge (100) selon la revendication 1, caractérisé en ce que la commande (119) est conçue pour mettre fin à l'opération de lavage (144) lorsque la deuxième valeur de température déterminée du liquide de lavage en fin de la phase de mélange (147) correspond à la valeur de température cible (146), ou que
    la commande (119) est conçue pour mettre fin à l'opération de lavage (144) lorsque la deuxième valeur de température déterminée du liquide de lavage en fin de la phase de mélange (147) est située dans une plage de variance de la valeur de température cible (146) ou que
    la commande (119) est conçue pour mettre fin à l'opération de lavage (144) lorsque la différence de température déterminée entre la première valeur de température et la deuxième valeur de température est en-deçà d'une valeur seuil de température supplémentaire.
  3. Appareil d'entretien du linge (100) selon la revendication 1 ou 2, caractérisé en ce que la commande (119) est conçue pour, pendant une phase d'accumulation (155) de l'opération de lavage (144) venant après la phase de mélange (147), désactiver la pompe (117) et l'entraînement de tambour (123) pour accumuler du liquide de lavage dans le compartiment à lessive (105) lorsque la deuxième valeur de température déterminée du liquide de lavage en fin de la phase de mélange (147) ne correspond pas à la valeur de température cible (146) ou lorsque la deuxième valeur de température déterminée du liquide de lavage en fin de la phase de mélange (147) n'est pas située dans une plage de variance de la valeur de température cible (146) ou lorsque la différence de température déterminée entre la première valeur de température et la deuxième valeur de température est en-deçà de la valeur seuil de température supplémentaire.
  4. Appareil d'entretien du linge (100) selon l'une des revendications précédentes, caractérisé en ce que la commande (119) est conçue pour démarrer une opération de lavage supplémentaire (144-2) de l'appareil d'entretien du linge (100) après la phase de mélange (147) ou après la phase d'accumulation (155), lorsque la deuxième valeur de température déterminée du liquide de lavage en fin de la phase de mélange (147) ne correspond pas à la valeur de température cible (146) ou n'est pas située dans une plage de variance de la valeur de température cible (146) ou lorsque la différence de température déterminée entre la première valeur de température et la deuxième valeur de température n'est pas en-deçà de la valeur seuil de température supplémentaire, dans lequel la commande (119) est conçue pour activer l'élément de chauffage pendant une phase de chauffage supplémentaire (145-2) de l'opération de lavage supplémentaire (144-2) jusqu'à ce que la température détectée du liquide de lavage dans le compartiment à lessive (105) atteigne une valeur de température cible (146), dans lequel la commande (119) est conçue pour, pendant une phase de mélange supplémentaire (147-2) de l'opération de lavage supplémentaire (144-2) venant après la phase de chauffage supplémentaire (145-2), activer l'entraînement de tambour (123) pour faire tourner le tambour à linge (107) et activer la pompe (117) pour pomper le liquide de lavage et mouiller le linge reçu dans le tambour à linge (107) avec le liquide de lavage pompé chauffé, dans lequel la commande (119) est conçue pour, au début d'un temps de référence (153) de la phase de mélange supplémentaire (147-2), déterminer une première valeur de température, et en fin du temps de référence (152) de la phase de mélange supplémentaire (147-2), une deuxième valeur de température, et dans lequel la commande (119) est conçue pour mettre fin à la phase de mélange supplémentaire (147-2), lorsque la différence de température entre la première valeur de température et la deuxième valeur de température est en-deçà d'une valeur seuil de température pour garantir une répartition uniforme de température dans le liquide de lavage et dans le linge.
  5. Appareil d'entretien du linge (100) selon l'une des revendications précédentes, caractérisé en ce que l'appareil d'entretien du linge (100) présente un capteur de niveau qui est conçu pour détecter un niveau de liquide de lavage dans le compartiment à lessive (105) et que l'appareil d'entretien du linge (100) présente un dispositif d'amenée de liquide de lavage pour amener du liquide de lavage dans le compartiment à lessive (105), dans lequel la commande (119) est conçue pour activer le dispositif d'amenée de liquide de lavage pour amener du liquide de lavage au compartiment à lessive (105) lorsque le niveau détecté de liquide de lavage dans le compartiment à lessive (105) est en-deçà d'une valeur de référence de niveau de remplissage.
  6. Appareil d'entretien du linge (100) selon la revendication 5, caractérisé en ce que le dispositif d'amenée de liquide de lavage est relié en technique de fluide avec le compartiment à lessive (105) par un tuyau d'amenée et que le dispositif d'amenée de liquide comprend particulièrement un tiroir à lessive (101) de l'appareil d'entretien du linge (100).
  7. Appareil d'entretien du linge (100) selon l'une des revendications précédentes, caractérisé en ce que l'appareil d'entretien du linge (100) présente un capteur de niveau qui est conçu pour détecter un niveau de liquide de lavage dans le compartiment à lessive (105), dans lequel la commande (119) est conçue pour activer l'entraînement de tambour (123) pour essorer du liquide de lavage lié dans le linge et diriger le liquide de lavage essoré vers le compartiment à lessive (105) lorsque le niveau de remplissage détecté de liquide de lavage dans le compartiment à lessive (105) est en-deçà d'une valeur de référence de niveau de remplissage.
  8. Appareil d'entretien du linge (100) selon l'une des revendications précédentes, caractérisé en ce que la commande (119) est conçue pour activer l'entraînement de tambour (123) pendant la phase de mélange (147) pour faire tourner le tambour à linge (107) au moins par tronçons à une vitesse de rotation d'appui (148) pendant la phase de mélange (147) et pour amener le linge en appui contre le tambour à linge (107).
  9. Appareil d'entretien du linge (100) selon l'une des revendications précédentes, caractérisé en ce que la commande (119) est conçue pour activer l'entraînement de tambour (123) pendant la phase de mélange (147) pour faire tourner le tambour à linge (107) au moins par tronçons à une vitesse de rotation inverse, en particulier à une vitesse de rotation inverse dirigée inversement au sens de rotation principal du tambour à linge (107) pendant la phase de mélange (147).
  10. Appareil d'entretien du linge (100) selon la revendication 9, caractérisé en ce que la commande (119) est conçue pour faire tourner le tambour à linge (107) à la vitesse de rotation inverse et/ou dans la vitesse de rotation inverse, pendant le temps de référence (153).
  11. Appareil d'entretien du linge (100) selon l'une des revendications précédentes, caractérisé en ce que l'appareil d'entretien du linge (100) présente un capteur de niveau de remplissage qui est conçu pour détecter un niveau de remplissage de liquide de lavage dans le compartiment à lessive (105), et que la commande (119) est conçue pour activer l'élément de chauffage pendant la phase de chauffage (145) lorsque le niveau de remplissage détecté de liquide de lavage dans le compartiment à lessive (105) dépasse une valeur de référence de niveau de remplissage.
  12. Procédé (200) pour entretenir du linge dans un appareil d'entretien du linge (100), dans lequel l'appareil d'entretien du linge (100) présente un compartiment à lessive (105) pour recevoir du liquide de lavage, dans lequel le compartiment à lessive (105) présente une ouverture d'évacuation (111) et une ouverture d'amenée (113) qui sont reliées en technique de fluide par un tuyau à liquide (115), dans lequel l'appareil d'entretien du linge (100) présente un tambour à linge (107) pour recevoir du linge, un entraînement de tambour (123) pour faire tourner le tambour à linge (107), un capteur de température pour détecter une température de liquide de lavage dans le compartiment à lessive (105), un élément de chauffage pour chauffer le liquide de lavage, une pompe (117) qui est conçue pour pomper du liquide de lavage dans le tuyau à liquide (115) par l'ouverture d'évacuation (111) et diriger le liquide de lavage pompé de nouveau vers le compartiment à lessive (105) par l'ouverture d'amenée (113), pour mouiller le linge dans le tambour à linge (107), et une commande (119) pour commander la pompe (117), l'entraînement de tambour (123) et l'élément de chauffage pendant une opération de lavage (144), caractérisé en ce que le procédé (200) comprend les étapes suivantes :
    activation (201) de l'élément de chauffage pendant une phase de chauffage (145) de l'opération de lavage (144) par la commande (119) jusqu'à ce que la température détectée du liquide de lavage dans le compartiment à lessive (105) atteigne une valeur de température cible (146),
    activation (203) du tambour à linge (123) pour faire tourner le tambour à linge (107), et de la pompe (117) pour pomper le liquide de lavage, pendant une phase de mélange (147) venant après la phase de chauffage (145), par la commande (119), pour mouiller le linge reçu dans le tambour à linge (107) avec le liquide de lavage pompé chauffé,
    détermination (205) d'une première valeur de température du liquide de lavage dans le compartiment à lessive au début d'un temps de référence (153) de la phase de mélange (147) et d'une deuxième valeur de température du liquide de lavage dans le compartiment à lessive en fin d'un temps de référence (153) de la phase de mélange (147) par la commande (119), et
    mise fin (207) à la phase de mélange (147) par la commande (119) lorsque la différence de température entre la première valeur de température et la deuxième valeur de température est en-deçà d'une valeur seuil de température pour garantir une répartition uniforme de température dans le liquide de lavage et dans le linge.
  13. Procédé (200) selon la revendication 12, caractérisé en ce que le procédé (200) comprend l'étape suivante, mise fin (209) à l'opération de lavage (144) par la commande (119) lorsque la deuxième valeur de température déterminée du liquide de lavage en fin de la phase de mélange (147) correspond à la valeur de température cible (146) ou lorsque la deuxième valeur de température déterminée du liquide de lavage en fin de la phase de mélange (147) est située dans une plage de variance de la valeur de température cible (146), ou lorsque la différence de température déterminée entre la première valeur de température et la deuxième valeur de température est en-deçà d'une valeur seuil de température supplémentaire.
  14. Procédé (200) selon la revendication 12 ou 13, caractérisé en ce que le procédé (200) comprend l'étape suivante, désactivation (211) de la pompe (117) et de l'entraînement de tambour (123) pendant une phase d'accumulation (155) de l'opération de lavage (144) venant après la phase de mélange (147), par la commande (119), pour accumuler du liquide de lavage dans le compartiment à lessive (105) lorsque la deuxième valeur de température déterminée du liquide de lavage en fin de la phase de mélange (147) ne correspond pas à la valeur de température cible (146) ou lorsque la deuxième valeur de température déterminée du liquide de lavage en fin de la phase de mélange (147) n'est pas située dans une plage de variance de la valeur de température cible (146) ou lorsque la différence de température déterminée entre la première valeur de température et la deuxième valeur de température n'est pas en-deçà d'une valeur seuil de température supplémentaire.
  15. Procédé selon l'une des revendications précédentes 12 à 14, caractérisé en ce que le procédé (200) comprend l'étape suivante, démarrage (213) d'une opération de lavage supplémentaire (144-2) de l'appareil d'entretien du linge (100) après la phase de mélange (147) ou après la phase d'accumulation (155), par la commande (119), lorsque la deuxième valeur de température déterminée du liquide de lavage en fin de la phase de mélange (147) ne correspond pas à la valeur de température cible (146) ou n'est pas située dans une plage de variance de la valeur de température cible (146) ou lorsque la différence de température déterminée entre la première valeur de température et la deuxième valeur de température n'est pas en-deçà d'une valeur seuil de température supplémentaire, dans lequel l'opération de lavage supplémentaire (144-2) comprend une phase de chauffage supplémentaire (145-2) et une phase de mélange supplémentaire (147) venant après la phase de chauffage supplémentaire (145).
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WO2019081225A1 (fr) 2019-05-02
CN111263837B (zh) 2022-07-05

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