EP4060108B1 - Appareil d'entretien du linge doté d'une commande - Google Patents

Appareil d'entretien du linge doté d'une commande

Info

Publication number
EP4060108B1
EP4060108B1 EP22155821.6A EP22155821A EP4060108B1 EP 4060108 B1 EP4060108 B1 EP 4060108B1 EP 22155821 A EP22155821 A EP 22155821A EP 4060108 B1 EP4060108 B1 EP 4060108B1
Authority
EP
European Patent Office
Prior art keywords
washing liquid
laundry
time phase
drum
wetting
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
EP22155821.6A
Other languages
German (de)
English (en)
Other versions
EP4060108A1 (fr
Inventor
Kerstin HILT
Thorsten Schiegl
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 Hausgeräte GmbH
Original Assignee
BSH Hausgeräte 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 Hausgeräte GmbH filed Critical BSH Hausgeräte GmbH
Publication of EP4060108A1 publication Critical patent/EP4060108A1/fr
Application granted granted Critical
Publication of EP4060108B1 publication Critical patent/EP4060108B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • D06F33/34—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of water filling
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/37—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of metering of detergents or additives
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2101/00—User input for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2101/02—Characteristics of laundry or load
    • D06F2101/04—Quantity, e.g. weight
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/04—Quantity, e.g. weight or variation of weight
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/18—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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/38—Time, e.g. duration
    • 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
    • D06F2103/44—Current or voltage
    • D06F2103/46—Current or voltage of the motor driving the drum
    • 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
    • D06F2105/06—Recirculation of washing liquids, e.g. by pumps or diverting valves
    • 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
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/52—Changing sequence of operational steps; Carrying out additional operational steps; Modifying operational steps, e.g. by extending duration of steps
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/18—Condition of the laundry, e.g. nature or weight
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • 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
    • 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
    • D06F39/088—Liquid supply arrangements

Definitions

  • the present invention relates to a laundry care device with a control unit.
  • Conventional laundry care machines use various methods to wet the laundry in the drum. Optimal wetting of the laundry in the drum cannot always be guaranteed in conventional machines, especially if no information is available regarding the load size or the absorbency of the laundry.
  • the object underlying the invention is to provide a laundry care device which ensures advantageous wetting of the laundry placed in the washing drum.
  • a laundry care device comprising a tub for receiving washing liquid, a washing liquid supply device for supplying washing liquid into the tub, a washing drum for receiving laundry, wherein the washing drum is arranged in the tub, a weighing device for determining the weight of the laundry received in the washing drum, and a control unit which is connected to the washing liquid supply device and the weighing device, wherein the weighing device is configured to determine the weight of the laundry received in the washing drum during a determination period.
  • control is configured to activate the washing liquid supply device to supply a basic quantity of washing liquid into the tub during a basic time period following the determination period, and wherein the control is configured to activate the washing liquid supply device to supply a wetting quantity of washing liquid into the tub during a wetting period following the basic time period, wherein the control is configured to determine the wetting quantity supplied during the wetting period as a function of the determined weight of the laundry taken up in the washing drum.
  • the weight determination device includes a weight detection device designed to detect the weight of the laundry placed in the washing drum during the determination period.
  • the weight detection device is thus specifically designed to detect the weight of the laundry placed in the washing drum during the determination period, i.e., to measure it using sensors.
  • the weight determination device may only include an input element of the laundry care appliance, which can be operated by a user of the laundry care appliance to enter the weight of the laundry contained in the washing drum, so that in this case the weight of the laundry is not measured by the laundry care appliance itself by means of sensors, but the weight is merely made available to the control system by the user through input.
  • the weight of the laundry in the washing drum includes the dry weight of the laundry in the washing drum.
  • the dry weight comprises the weight of the laundry before washing liquid, especially fabric softener and/or fresh water, was added to the laundry by the washing liquid supply device.
  • the term dry weight does not necessarily require that the laundry in the washing drum... Laundry must be completely dry before being placed in the washing drum, so that the dry weight of the laundry can also include slightly damp items of laundry which are placed in the washing drum by the user in this state.
  • the control unit activates the washing liquid supply system during the base period to add a base quantity of washing liquid, thus supplying a basic amount of washing liquid to the washing drum.
  • This base quantity of washing liquid is independent of the laundry weight determined by the weighing device and serves solely to rinse the laundry care product dispensed from the dispenser into the washing drum and to ensure initial wetting of the laundry in the drum. Therefore, the base quantity of washing liquid supplied during the base period remains constant, particularly across different load categories of the washing machine, and does not vary depending on the load size.
  • the control system reactivates the washing liquid supply to deliver a wetting quantity of washing liquid.
  • the amount of washing liquid delivered during the wetting phase depends on the weight of the laundry as determined by the weighing device. This ensures load-dependent wetting of the laundry. Therefore, the amount of washing liquid delivered during the wetting phase varies depending on the load size or weight of the laundry.
  • the wetting quantity of washing liquid specifically adapted to the weight can be added at an early beginning of the washing phase, thereby increasing the washing performance for the same program duration, or thereby shortening the program duration for the same washing performance.
  • the laundry care device according to the present invention can be operated in a particularly resource-efficient manner.
  • a laundry care appliance is understood to be a device used for laundry care, such as a washing machine or a tumble dryer. Specifically, such a laundry care appliance is understood to be a household laundry care appliance. That is, a laundry care appliance used in the course of household management and with which laundry in typical household quantities is treated.
  • the washing container has a drain opening and a feed element
  • the laundry care device has a pump which is fluidically connected to the drain opening and the feed element and is designed to pump washing liquid from the drain opening and to feed the pumped washing liquid back into the washing container through the feed element in order to recirculate the washing liquid
  • the control system is designed to activate the pump to recirculate washing liquid during the base time period and/or during the wetting time period.
  • control system is configured to activate the washing liquid supply device and the pump simultaneously during the wetting period, or the control system is configured to activate the pump with a time delay after the activation of the washing liquid supply device during the wetting period.
  • the laundry By simultaneously activating the pump and the washing liquid supply device during the wetting period, the laundry is immediately and directly wetted by means of the pumped washing liquid via the supply element.
  • the washing liquid supplied by the washing liquid supply device is initially fed over the drum shell of the washing drum and wets the laundry in the washing drum at a different position than if the washing liquid is pumped around via the pump.
  • the laundry care device has a level sensor for detecting the level of washing liquid in the tub, wherein the control is configured to end the wetting period if the level of washing liquid detected during the wetting period exceeds a level threshold.
  • reaching the fill level threshold can advantageously indicate an endpoint of the wetting period, at which sufficient wetting of the laundry is present.
  • control system is designed to determine the duration of the wetting period depending on the weight of the laundry in the washing drum and/or depending on the detected fill level of washing liquid.
  • the base amount of washing liquid supplied to the tub during the base period is determined independently of the weight of the laundry in the washing drum.
  • the base quantity is the same for different laundry loads, thus ensuring simplified feeding of the base quantity.
  • the base quantity serves solely to dispense laundry care substance from the dispenser tray into the wash tub, or to initially wet the laundry with washing liquid.
  • the base quantity supplied during the base phase is less than the wet quantity supplied during the wet phase.
  • the lye container has a heating device for heating the washing liquid contained in the lye container, and the control system is configured to activate the heating device for heating the washing liquid contained in the lye container during the wetting period.
  • the laundry care appliance has a drum drive for rotating the washing drum
  • the control system is configured to activate the drum drive for rotating the washing drum during the base time period and/or during the wetting time period, in particular to rotate the washing drum alternately in both directions of rotation.
  • the laundry care device has a drum drive for rotating the washing drum
  • the control system is designed to activate the drum drive for rotating the washing drum at an ejection speed during an ejection period following the wetting period in order to expel washing liquid bound to the laundry.
  • the laundry care device has a level sensor for detecting the level of washing liquid in the tub, and the control system is configured to end the discharge phase when the detected level of washing liquid exceeds a level threshold, and/or the control system is configured to activate the washing liquid supply device to supply a rewetting quantity of washing liquid to the tub during a subsequent rewetting phase if the detected level of washing liquid falls below a level threshold after the discharge phase.
  • the budding period can also be ended by the control system after a predetermined time period has elapsed.
  • the control system recognizes that possibly not enough washing liquid was supplied to the laundry and enables re-wetting of the laundry by supplying the required amount of washing liquid.
  • control system is designed to activate the drum drive to rotate the washing drum and/or the pump to transfer washing liquid during the post-wetting period.
  • control system is designed to end or repeat the post-wetting period depending on the fill level of washing liquid in the lye container detected after the post-wetting period.
  • the weight determination device comprises a weighing system for weighing the laundry contained in the washing drum, a device for detecting a deflection of a vibration system of the washing drum, and/or a power detection element for detecting an electrical power value of a drum drive of the washing drum.
  • the problem according to the invention is solved by a method for wetting laundry in a laundry care appliance, wherein the laundry care appliance comprises a tub for receiving washing liquid, a washing liquid supply device for supplying washing liquid into the tub, a washing drum for receiving laundry, the washing drum being arranged in the tub, a weighing device for determining the weight of the laundry held in the washing drum, and a control unit which is connected to the washing liquid supply device and the weighing device, wherein the method comprises the following process steps: determining the weight of the laundry held in the washing drum by the weighing device during a determination period, activating the washing liquid supply device to supply a base quantity of washing liquid into the tub by the control unit during a base period following the determination period, and activating the washing liquid supply device to supply a wetting quantity of washing liquid into the tub by the control unit during a base period following the base period. Wetting time period, whereby the control determines the amount of wetting depending on the weight of the laundry in the washing drum.
  • the laundry care device has a drum drive for rotating the washing drum
  • the method includes the further process step of activating the drum drive by the control during an expulsion period following the wetting period, in order to rotate the washing drum at an expulsion speed and expel washing liquid bound to the laundry.
  • the laundry care appliance has a level sensor for detecting the level of washing liquid in the tub, wherein the method comprises the following step: deactivating the drum drive by the controller to end the discharge period when the detected level of washing liquid exceeds a level threshold; or wherein the method comprises the following step: activating the washing liquid supply device by the controller during a rewetting period following the discharge period to supply a rewetting quantity of washing liquid to the tub when the detected level of washing liquid falls below a level threshold after the discharge period.
  • the base quantity of washing liquid supplied to the tub during the base time period is determined independently of the weight of the laundry in the washing drum.
  • inventions identified as advantageous for the laundry care device according to the first aspect are also advantageous embodiments for the method according to the second aspect.
  • FIG. 1 shows a schematic view of a general laundry care appliance 100, such as a washing machine.
  • the laundry care appliance 100 includes a dispenser tray 101 into which laundry care substance, in particular detergent or other liquid substances, can be poured.
  • the laundry care appliance 100 has a housing 102.
  • the laundry care appliance 100 includes a door 103 for loading the laundry care appliance 100 with laundry.
  • FIG. 2 Figure 1 shows a schematic view of a laundry care appliance with a control unit.
  • the laundry care appliance 100 has a tub 105 for holding washing liquid and a drum 107 for holding laundry.
  • the drum 107 is located inside the tub 105.
  • the laundry care appliance 100 has a drum drive 109 for rotating the drum 107.
  • the tub 105 has a drain opening 111.
  • the laundry care appliance 100 has a feed element 113.
  • the drain opening 111 is fluidically connected to the feed element 113 via a fluid line 115, the fluid line 115 containing...
  • a pump 117 is arranged for pumping washing liquid through the liquid line 115.
  • the pump 117 can pump washing fluid through the drain opening 111 from the tub 105 during a cycle.
  • Fig. 2 During the pumping process (not shown), the washing liquid is pumped into the liquid line 115 and fed back through the liquid line 115 and the feed element 113 to the tub 105 and the washing drum 107. This allows the washing liquid to be effectively pumped back through the liquid line 115 and fed back to the laundry in the washing drum 107 during a laundry care process.
  • the laundry care appliance 100 has a washing liquid supply device 118-1 for supplying washing liquid into the tub 105, wherein the washing liquid supply device 118-1 is connected to the tub 105 by a supply line 118-2.
  • the washing liquid supply device 118-1 includes a Fig. 2 detergent dispenser 101 of the laundry care appliance 100 (not shown) and/or one in Fig. 2 The fresh water connection of the laundry care appliance 100 (not shown), wherein the control unit 119 is designed to activate a washing liquor inlet via the detergent dispenser 101 and/or the fresh water connection in order to supply washing liquor and/or fresh water as washing liquid into the washing drum 107.
  • the laundry care appliance 100 also includes a control unit 119, which is connected to the pump 117, the drum drive 109 and the washing liquid supply device 118-1, each by a control connection 121.
  • the laundry care appliance 100 further comprises a weight determination device 123 for determining the weight of the laundry held in the washing drum 107, in particular a weight detection device 123 for detecting the weight of the laundry held in the washing drum 107, i.e. for sensorially measuring the weight of the laundry in the washing drum 107.
  • the depicted weight determination device 123 has in particular a power detection element 123-1 for detecting an electrical power value of the drum drive 109.
  • the power detection element 123-1 is configured to detect a torque-generating current and/or an electrical power consumption of the drum drive 109 as an electrical power value of the drum drive 109.
  • the weight determination device 123 in particular the power detection element 123-1, is configured to determine the weight of the laundry placed in the washing drum 107 as a function of the detected electrical power value of the drum drive 109.
  • the power acquisition element 123-1 is arranged in the controller 119.
  • the power acquisition element 123-1 can be arranged, in particular, outside the controller 119, as shown in the Fig. 2 not shown.
  • the power sensing element 123-1 can be arranged, in particular, within the drum drive 109.
  • the weight determination device 123 may alternatively or additionally include a weighing system for weighing the laundry contained in the washing drum 107 and/or alternatively or additionally include a device for detecting a deflection of a vibration system of the washing drum 107.
  • the weight determination device 123 can simply comprise an input element of the laundry care appliance 100, via which the user can enter the weight of the laundry, without the weight determination device 123 itself measuring the weight of the laundry 107 in the washing drum 107.
  • the laundry care appliance 100 further comprises an outlet line 125, which is fluidically connected to the liquid line 115.
  • the pump 117 is designed to operate during a process in Fig. 2
  • the pumping process involves pumping the washing liquid out of the washing container 105 through the drain opening 111, through the liquid line 115 and out of the laundry care appliance 100 through the outlet line 125.
  • the laundry care appliance 100 also features, in particular, a Fig. 2 not shown level sensor for detecting the level of washing liquid in the tub 105.
  • the laundry care appliance 100 also features, in particular, a Fig. 2 Heating device not shown for heating the washing liquid contained in the lye container 105.
  • Fig. 3 shows a graphical representation of laundry wetting processes according to a first, second, third and fourth embodiment.
  • the first embodiment A comprises lines A1, A2 and A3
  • the second embodiment B comprises lines B1, B2 and B3
  • the third embodiment C comprises lines C1, C2 and C3
  • the fourth embodiment D comprises lines D1, D2 and D3.
  • FIG. 3 Figure 1 shows, according to the first, second, third and fourth embodiments A, B, C and D, a temporal representation of the rotational speed of the washing drum 107 (see the respective first curves 141 in lines A1, B1, C1 and D1), the quantity of washing liquid supplied to the tub 105 by a washing liquid supply device 118-1 (see the respective second curves 143 in lines A2, B2, C2 and D2) and the activation of the pump 117 for pumping washing liquid (see the respective third curves 145 in lines A3, B3, C3 and D3), which are plotted along the ordinate axis 127 as a function of time, which is indicated along the abscissa axis 129.
  • the laundry wetting processes shown according to the first, second, third and fourth embodiments A, B, C and D each have a determination time period 132, a base time period 133 following the determination time period 132, a wetting time period 135 following the base time period 133, and a sprouting time period 137 following the wetting time period 135.
  • Only the fourth embodiment D additionally features a post-wetting period 139 following the sprouting period 137.
  • the one in Fig. 3 The first curves 141 shown depict the time course of the rotational speed of a washing drum 107 rotated by a drum drive 109.
  • the weight determination device 123 in particular the power sensing element 123-1, is designed to determine a weight of the laundry contained in the washing drum 107 on the basis of a detected electrical power value of the drum drive 109 (see lines A1, B1, C1 and D1).
  • the determination time period 132 is followed by the basic time period 133.
  • the control unit 119 activates the washing liquid supply device 118-1 to supply a basic quantity of washing liquid into the lye container 105 (see lines A2, B2, C2 and D2).
  • the one in Fig. 3 The second curves 143 shown depict the time course of the washing liquid supplied to the lye container 105 by the washing liquid supply device 118-1.
  • the supply of the basic quantity of washing liquid during the basic time period 133 serves in particular to introduce laundry care substance from the dispenser tray 101 into the tub 105 and also ensures an initial wetting of the laundry taken up in the washing drum 107 with washing liquid.
  • the basic quantity of washing liquid supplied to the tub 105 during the basic time period 133 is determined in particular independently of the weight of the laundry taken up in the washing drum 107.
  • the controller 119 also activates pump 117 to pump the washing liquid (see lines A3, B3, C3 and D3). Pumping the washing liquid further improves the wetting of the laundry.
  • the Fig. 3 The third curves 145 shown here depict the time course of the fluid pumped out of the lye container 105 through the drain opening 111 by the pump 117. and washing liquid supplied again to the lye container 105 through the inlet element 113 as part of a pumping process.
  • the wetting period 135 follows the basic time period 133.
  • the controller 119 activates the washing liquid supply device 118-1 to supply a wetting quantity of washing liquid into the tub 105 (see lines A2, B2, C2 and D2), wherein the controller 119 is configured to determine the wetting quantity depending on the determined weight of the laundry in the washing drum 107.
  • the amount of washing liquid supplied to the tub 105 during the wetting period 135 can be optimally adapted to the weight of the laundry in the washing drum 107 as determined by the weight determination device 123, in particular the power sensing element 123-1.
  • the laundry care appliance 100 has a level sensor designed to detect the level of washing liquid in the tub 105.
  • the control unit 119 is specifically designed to terminate the wetting time period 135 when the detected level of washing liquid exceeds a liquid threshold.
  • Exceeding the fill level threshold indicates optimal wetting of the laundry. Since the detected fill level, or rather the fill level threshold of the washing liquid in the tub 105, is directly related to the absorbency of the laundry, the control unit 119 can determine the textile types of the laundry by detecting the fill level of the washing liquid. Thus, an endpoint for the wetting period 135 can be effectively defined.
  • the washing drum 107 is rotated during the wetting period 135, especially rotating alternately in both directions of rotation (see lines A1, B1, C1 and D1).
  • the wetting phase 135 is followed by the expulsion phase 137.
  • the control unit 119 activates the drum drive 109 during the expulsion phase 137 in order to rotate the washing drum 107 at an expulsion speed in order to expel washing liquid bound to the laundry.
  • the amount of washing liquid released in this process can be determined, in particular, by means of a level sensor for detecting the level of washing liquid in the washing tank 105.
  • the control unit 119 is designed to determine the amount of washing liquid expelled from the laundry during the expulsion period 137, depending on the detected level of washing liquid.
  • control unit 119 is designed to terminate the exit time section 137 according to the second embodiment B when the detected level of washing liquid exceeds a level threshold (see line B2).
  • control unit 119 is alternatively configured according to the first embodiment A to activate the washing liquid supply device 118-1 to supply a further quantity of washing liquid into the lye container 105 (see line A2).
  • washing liquid By adding the additional quantity of washing liquid according to the first embodiment A, it can be ensured that after the process a minimum quantity of washing liquid is present in the lye container 105, which is sufficient This ensures that a heating element located on the underside of the washing container 105 is sufficiently covered with washing liquid.
  • the in Fig. 3 The third embodiment C shown differs from those in Fig. 3 In the second embodiment B, a larger quantity of laundry is placed in the washing drum 107, thereby increasing the duration of the wetting period 135 in the third embodiment C.
  • the pump 117 for pumping the washing liquid is activated simultaneously with the washing liquid supply device 118-1 for supplying washing liquid, so that the supplied washing liquid is pumped simultaneously by the pump 117 and thus injected centrally into the laundry.
  • the pump 117 is activated with a time delay only after the activation of the washing liquid supply device 118-1, so that the supplied washing liquid is first supplied to the laundry in the washing drum 107 via the drum shell before a pumping takes place, so that the point of impact of the washing liquid directed onto the laundry is varied.
  • the in Fig. 3 The fourth embodiment D shown discloses a further case in which, after the end of the discharge period 137, there is a low level of washing liquid in the lye container 105, e.g. because there is a large quantity of laundry and/or particularly absorbent laundry in the washing drum 107.
  • the expulsion time section 137 is followed by an additional post-wetting time section 139, during which the control 119 activates the washing liquid supply device 118-1 to supply a post-wetting quantity of washing liquid into the lye container 105. activated when the detected fill level of washing liquid falls below a fill level threshold after the expulsion time period 137.
  • the control unit 119 is designed to activate the drum drive 109 to rotate the washing drum 107 and/or the pump 117 to pump washing liquid during the post-wetting period 139 (see lines D1 and D3).
  • the amount of washing liquid required for the washing process is determined directly depending on the weight of the laundry in the washing drum 107 as determined by the weight determination device 123, in particular the power measurement element 123-1.
  • the load-specific amount of washing liquid can be provided right at the beginning of the wetting phase, resulting in the following advantages.
  • a shorter wetting phase is achieved, which allows the subsequent washing phase to be started earlier, thus increasing the washing performance during the washing phase while maintaining the same program duration, or shortening the program duration while maintaining the same washing performance during the washing phase.
  • washing liquid can be heated earlier in the program, thus ensuring improved washing performance.
  • Fig. 4 shows a schematic representation of a process for wetting laundry in a laundry care device.
  • the procedure 200 comprises as a first procedural step the determination 201 of a weight of the laundry taken up in the washing drum 107 by the weight determination device 123, 123-1 during a determination period 132.
  • the second process step of the process 200 comprises the activation 203 of the washing liquid supply device 118-1 to supply a basic quantity of washing liquid into the lye container 105 and of the pump 117 to pump washing liquid by the control unit 119 during a basic time period 133 following the determination time period 132.
  • the process 200 comprises, as a third process step, the activation 205 of the washing liquid supply device 118-1 to supply a wetting quantity of washing liquid into the tub 105 by the control unit 119 during a wetting time period 135 following the basic time period 133, wherein the control unit 119 determines the wetting quantity as a function of the weight of the laundry taken up in the washing drum 107.
  • the process 200 includes, as an optional fourth process step, the activation 207 of the drum drive 109 by the control 119 during an expulsion period 137 following the wetting period 135, in order to rotate the washing drum 107 at an expulsion speed and expel washing liquid bound to the laundry.
  • the procedure 200 includes, as an optional fifth procedure step, the deactivation 209-1 of the drum drive 109 by the control 119 in order to end the discharge time period 137 if the detected level of washing liquid exceeds a level threshold value, or the procedure 200 includes, as an optional sixth procedure step, the activation 209-2 of the washing liquid supply device 118-1 by the control 119 during a post-wetting time period 139 following the discharge time period 137 in order to supply a post-wetting quantity of washing liquid to the lye container 105 if the detected level of washing liquid falls below a level threshold value after the discharge time period 137.

Landscapes

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

Claims (13)

  1. Appareil d'entretien du linge (100) avec une cuve de lavage (105) pour l'accueil de liquide de lavage, un dispositif d'alimentation en liquide de lavage (118-1) pour l'alimentation de la cuve de lavage (105) en liquide de lavage, un tambour à linge (107) pour l'accueil de linge, dans lequel le tambour à linge (107) est disposé dans la cuve de lavage (105), un dispositif de détermination de poids (123, 123-1) pour la détermination d'un poids du linge accueilli dans le tambour à linge (107), et une commande (119) reliée, sur le plan de la technique de commande, au dispositif d'alimentation en liquide de lavage (118-1) et au dispositif de détermination de poids (123, 123-1), dans lequel
    le dispositif de détermination de poids (123, 123-1) est formé pour déterminer, pendant une période de détermination (132), un poids du linge accueilli dans le tambour à linge (107), caractérisé en ce que
    la commande (119) est formée pour activer, pendant une période de base (133) suivant la période de détermination (132), le dispositif d'alimentation en liquide de lavage (118-1) pour l'alimentation de la cuve de lavage (105) en une quantité de base de liquide de lavage, dans lequel la quantité de base de liquide de lavage dont la cuve de lavage (105) est alimentée pendant la période de base (133) est déterminée indépendamment du poids du linge accueilli dans le tambour à linge (107), et en ce que
    la commande (119) est formée pour activer, pendant une période de mouillage (135) suivant la période de base (133), le dispositif d'alimentation en liquide de lavage (118-1) pour l'alimentation de la cuve de lavage (105) en une quantité de mouillage de liquide de lavage, dans lequel la commande (119) est formée pour déterminer, en fonction du poids déterminé du linge accueilli dans le tambour à linge (107), la quantité de mouillage alimentée pendant la période de mouillage (135),
    dans lequel la cuve de lavage (105) présente un orifice de sortie (111) et un élément d'alimentation (113), en ce que l'appareil d'entretien du linge (100) présente une pompe (117) reliée fluidiquement à l'orifice de sortie (111) et à l'élément d'alimentation (113) et formée pour pomper le liquide de lavage en dehors de l'orifice de sortie (111) et pour réacheminer le liquide de lavage pompé vers la cuve de lavage (105) à travers l'élément d'alimentation (113), pour transvaser le liquide de lavage, et en ce que la commande (119) est formée pour activer la pompe (117) pendant la période de base (133) et/ou pendant la période de mouillage (135) pour le transvasement de liquide de lavage.
  2. Appareil d'entretien du linge (100) selon la revendication 1, caractérisé en ce que la commande (119) est formée pour activer simultanément le dispositif d'alimentation en liquide de lavage (118-1) et la pompe (117) pendant la période de mouillage (135), ou en ce que la commande (119) est formée pour activer la pompe (117) selon un retard temporel après l'activation du dispositif d'alimentation en liquide de lavage (118-1) pendant la période de mouillage (135).
  3. 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 pour la détection d'un niveau de liquide de lavage dans la cuve de lavage (105), dans lequel la commande (119) est formée pour mettre fin à la période de mouillage (135) lorsque le niveau de liquide de lavage détecté pendant la période de mouillage (135) excède une valeur de seuil de niveau.
  4. Appareil d'entretien du linge (100) selon la revendication 3, caractérisé en ce que la commande (119) est formée pour déterminer la durée de la période de mouillage (135) en fonction du niveau de liquide de lavage détecté.
  5. Appareil d'entretien du linge (100) selon l'une des revendications précédentes, caractérisé en ce que la commande (119) est formée pour déterminer la durée de la période de mouillage (135) en fonction du poids du linge accueilli dans le tambour (107).
  6. Appareil d'entretien du linge (100) selon l'une des revendications précédentes, caractérisé en ce que la cuve de lavage (105) présente un dispositif de chauffage pour le chauffage du liquide de lavage contenu dans la cuve de lavage (105), et en ce que la commande (119) est formée pour activer, pendant la période de mouillage (135), le dispositif de chauffage pour le chauffage du liquide de lavage contenu dans la cuve de lavage (105).
  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 entraînement de tambour (109) pour faire tourner le tambour à linge (107), et en ce que la commande (119) est formée pour activer, pendant la période de base (133) et/ou pendant la période de mouillage (135), l'entraînement de tambour (109) pour faire tourner le tambour à linge (107), en particulier pour faire tourner le tambour à linge (107) alternativement dans les deux sens de rotation.
  8. 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 entraînement de tambour (109) pour faire tourner le tambour à linge (107), et en ce que la commande (119) est formée pour activer, pendant une période d'expulsion (137) suivant la période de mouillage (135), l'entraînement de tambour (109) pour faire tourner le tambour à linge (107) à une vitesse de rotation d'expulsion pour expulser le liquide de lavage lié au linge.
  9. Appareil d'entretien du linge (100) selon la revendication 8, caractérisé en ce que l'appareil d'entretien du linge (100) présente un capteur de niveau pour la détection d'un niveau de liquide de lavage dans la cuve de lavage (105), et en ce que la commande (119) est formée pour mettre fin à la période d'expulsion (137) lorsque le niveau de liquide de lavage détecté excède une valeur de seuil de niveau, et/ou en ce que la commande (119) est formée pour activer, pendant une période de post-mouillage (139) suivant la phase d'expulsion (137), le dispositif d'alimentation en liquide de lavage (118-1) pour l'alimentation de la cuve de lavage (105) en une quantité de post-mouillage, lorsque le niveau de liquide de lavage détecté après la phase d'expulsion (137) est inférieur à une valeur de seuil de niveau.
  10. Appareil d'entretien du linge (100) selon l'une des revendications précédentes, caractérisé en ce que le dispositif de détermination de poids (123, 123-1) comprend un système de pesage pour le pesage du linge accueilli dans le tambour à linge (107), un dispositif pour la détection d'une déviation d'un système oscillant du tambour à linge (107), et/ou un élément de détection de puissance (123-1) pour la détection d'une valeur de puissance électrique d'un entraînement de tambour (109) du tambour à linge (107).
  11. Procédé (200) pour le mouillage de linge dans un appareil d'entretien du linge (100), dans lequel l'appareil d'entretien du linge (100) présente une cuve de lavage (105) pour l'accueil de liquide de lavage, un dispositif d'alimentation en liquide de lavage (118-1) pour l'alimentation de la cuve de lavage (105) en liquide de lavage, un tambour à linge (107) pour l'accueil de linge, dans lequel le tambour à linge (107) est disposé dans la cuve de lavage (105), un dispositif de détermination de poids (123, 123-1) pour la détermination d'un poids du linge accueilli dans le tambour à linge (107), et une commande (119) reliée, sur le plan de la technique de commande, au dispositif d'alimentation en liquide de lavage (118-1) et au dispositif de détermination de poids (123, 123-1), caractérisé en ce que la cuve de lavage (105) présente un orifice de sortie (111) et un élément d'alimentation (113), dans lequel l'appareil d'entretien du linge (100) présente une pompe (117) reliée fluidiquement à l'orifice de sortie (111) et à l'élément d'alimentation (113) et formée pour pomper le liquide de lavage en dehors de l'orifice de sortie (111) et pour réacheminer le liquide de lavage pompé vers la cuve de lavage (105) à travers l'élément d'alimentation (113), pour transvaser le liquide de lavage, dans lequel le procédé (200) comprend les étapes de procédé suivantes :
    détermination (201) d'un poids du linge accueilli dans le tambour à linge (107) par le dispositif de détermination de poids (123, 123-1) pendant une période de détermination (132),
    activation (203) du dispositif d'alimentation en liquide de lavage (118-1) pour l'alimentation de la cuve de lavage (105) en une quantité de base de liquide de lavage par la commande (119) pendant une période de base (133) suivant la période de détermination (132), dans lequel la quantité de base de liquide de lavage dont la cuve de lavage (105) est alimentée pendant la période de base (133) est déterminée indépendamment du poids du linge accueilli dans le tambour à linge (107),
    activation (205) du dispositif d'alimentation en liquide de lavage (118-1) pour l'alimentation de la cuve de lavage (105) en une quantité de mouillage de liquide de lavage par la commande (119) pendant une période de mouillage (135) suivant la période de base (133), dans lequel la commande (119) détermine la quantité de mouillage en fonction du poids du linge accueilli dans le tambour à linge (107), et
    activation de la pompe (117) pour le transvasement de liquide de lavage par la commande (119) pendant la période de base (133) et/ou pendant la période de mouillage (135).
  12. Procédé (200) selon la revendication 11, caractérisé en ce que l'appareil d'entretien du linge (100) présente un entraînement de tambour (109) pour faire tourner le tambour à linge (107), et en ce que le procédé comprend l'étape de procédé supplémentaire : activation (207) de l'entraînement de tambour (109) par la commande (119) pendant une période d'expulsion (137) suivant la période de mouillage (135) pour faire tourner le tambour à linge (107) à une vitesse de rotation d'expulsion et expulser le liquide de lavage lié au linge.
  13. Procédé (200) selon la revendication 12, caractérisé en ce que l'appareil d'entretien du linge (100) présente un capteur de niveau pour la détection d'un niveau de liquide de lavage dans la cuve de lavage (105), dans lequel le procédé (200) comprend l'étape de procédé suivante :
    désactivation (209-1) de l'entraînement de tambour (109) par la commande (119) pour mettre fin à la période d'expulsion (137) lorsque le niveau de liquide de lavage détecté excède une valeur de seuil de niveau, ou
    dans lequel le procédé (200) comprend l'étape de procédé suivante :
    activation (209-2) du dispositif d'alimentation en liquide de lavage (118-1) par la commande (119) pendant une période de post-mouillage (139) suivant la période d'expulsion (137), pour alimenter la cuve de lavage (105) en une quantité de post-mouillage de liquide de lavage, lorsque le niveau de liquide de lavage détecté après la phase d'expulsion (137) est inférieur à une valeur de seuil de niveau.
EP22155821.6A 2021-03-09 2022-02-09 Appareil d'entretien du linge doté d'une commande Active EP4060108B1 (fr)

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DE102005012426A1 (de) 2005-03-17 2006-09-21 BSH Bosch und Siemens Hausgeräte GmbH Benetzungsprozess für die Wäsche in einer programmgesteuerten Waschmaschine
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