EP4022120A1 - Wäschepflegegerät mit einer steuerung - Google Patents
Wäschepflegegerät mit einer steuerungInfo
- Publication number
- EP4022120A1 EP4022120A1 EP20761157.5A EP20761157A EP4022120A1 EP 4022120 A1 EP4022120 A1 EP 4022120A1 EP 20761157 A EP20761157 A EP 20761157A EP 4022120 A1 EP4022120 A1 EP 4022120A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- laundry
- drum
- during
- speed
- power value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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
- D06F33/36—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of washing
-
- 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
- D06F33/38—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of rinsing
-
- 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
-
- 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
-
- 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
-
- 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
- D06F2105/46—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
- D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
- D06F35/005—Methods for washing, rinsing or spin-drying
- D06F35/006—Methods for washing, rinsing or spin-drying for washing or rinsing only
Definitions
- the present invention relates to a laundry care device with a controller.
- a conventional laundry care device different methods are used for wetting the laundry received in the laundry drum.
- the washing liquid supplied can often also be injected into the laundry drum through a front drum opening facing the appliance door.
- the laundry in conventional laundry care devices often completely fills the volume of the laundry drum, so that the washing liquid supplied cannot penetrate into an inner area of the laundry received in the laundry drum, so that complete wetting cannot be ensured in all operating situations .
- a drum washing machine is disclosed in DE 19641309 B4.
- DE 102014 104962 A1 discloses a water supply control and a fully automatic washing machine.
- the object on which the invention is based is to provide a laundry care device in which, during a laundry care process, the presence of a laundry tunnel within the laundry received in the laundry drum can advantageously be detected.
- the object of the invention is achieved by a laundry care device, with a tub for holding washing liquid, a washing drum for holding laundry, the washing drum being arranged in the tub, an oscillating system which is designed to hold the washing drum and the tub in to mount the laundry care device such that it can swing, a drum drive for rotating the laundry drum during a washing period, a controller for controlling the drum drive, and a power detection element for detecting an electrical power value of the drum drive, the controller being designed to activate the drum drive during a detection time segment of the washing period, in order to rotate the laundry drum, wherein the power detection element is designed to detect a first electrical power value of the drum drive during a first detection interval of the detection time segment, wherein d The power detection element is designed to detect a second electrical power value of the drum drive during a second detection interval following the first detection interval, and the controller is designed to detect
- a laundry tunnel is created in the rotating laundry drum by centrifugal forces acting on the laundry, by means of which the laundry received in the rotating laundry drum is pressed against the laundry drum and the laundry tunnel is thereby formed.
- the laundry tunnel is understood to mean that inner area in the laundry drum loaded with laundry in which there is no laundry, the inner area being at least partially surrounded, in particular completely, by laundry resting against a jacket of the laundry drum.
- a cavity is created within the batch of laundry, which is referred to as a laundry tunnel.
- the power detection element is designed to detect a torque-generating current intensity and / or an electrical power consumption of the drum drive as an electrical power value of the drum drive.
- the drive torque of the laundry drum can be evaluated if the speed is known. With an unchanged and therefore stable laundry tunnel, the drive torque of the laundry drum does not change either, so that the electrical power value detected by the power detection element remains constant during the first and second detection interval.
- the drive torque of the laundry drum has not changed and a stable laundry tunnel has been formed in the laundry drum, which is detected by the control.
- a laundry care device is understood to mean a device that is used for laundry care, such as a washing machine, a washer-dryer 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.
- the controller is designed to activate the drum drive during a maximum time segment of the washing period in order to rotate the laundry drum at a maximum speed, the maximum speed being greater than a resonance speed of the laundry drum, the resonance speed being a speed of the laundry drum at which an oscillation frequency of the oscillation system corresponds to a natural oscillation frequency of the oscillation system, and wherein in particular the acquisition time segment takes place during the maximum time segment and / or after the maximum time segment.
- the maximum time segment has a plurality of maximum time segment ranges, the laundry drum being rotated during the respective maximum time segment range in each case at a maximum range speed, the maximum range speeds differing in particular.
- the controller is designed to activate the drum drive during a drum time segment of the washing period following the detection time segment, in particular the maximum time segment, in order to rotate the laundry drum at a drum speed, the drum speed being greater than and lower than a detachment speed of the laundry drum as a resonance speed of the laundry drum, wherein the detachment speed is a maximum speed of the laundry drum at which the laundry received in the laundry drum is released from the laundry drum, and wherein the resonance speed is a speed of the laundry drum at which an oscillation frequency of the oscillation system is a natural oscillation frequency of the Oscillation system corresponds.
- the laundry care device has a washing liquid supply device for supplying washing liquid into the washing drum, and the control is designed that
- washing liquid supply device during the washing period, in particular after the detection time segment, in order to supply washing liquid into the laundry tunnel within the rotating laundry drum.
- the washing liquid can advantageously be supplied, in particular injected, into the laundry tunnel.
- the washing liquid supplied into the laundry tunnel is driven radially outward through the laundry in order to wet the laundry as completely and advantageously as possible.
- the laundry care device has a washing liquid supply device for supplying washing liquid into the laundry drum, the control being designed to activate the washing liquid supply device during the maximum time segment and / or detection time segment in order to supply washing liquid to the laundry in the laundry drum and prewetting the laundry, and / or wherein the controller is designed to activate the washing liquid supply device during the drum period in order to supply washing liquid into the laundry tunnel within the rotating laundry drum.
- the washing liquid supply device can also supply washing liquid to the laundry during the maximum time segment and / or detection time segment, although a stable laundry tunnel may not yet have formed in the laundry drum to ensure effective pre-wetting of the laundry.
- the washing liquid supply device has a pump which is designed to pump washing liquid out of the tub and to supply the washing liquid again to the laundry in the laundry drum, and the controller is designed to operate the pump during the washing period, in particular during the detection period, during the maximum period of time and / or during the drum period of time to be activated in order to circulate washing liquid and to supply the circulating washing liquid to the laundry received in the washing drum.
- washing liquid thrown free due to the rotation of the washing drum can be pumped around by activating the pump and advantageously fed back to the washing for wetting. In this way, a stable washing liquid gradient can be ensured in the laundry, particularly in the case of pre-wetted laundry.
- the laundry care device has and / or is a fill level sensor arranged in the tub for detecting a fill level of washing liquid in the tub
- Power detection element designed to detect an electrical pump power value of the pump, the controller being designed to deactivate the pump or to reduce the pumping power of the pump when the level of washing liquid detected by the level sensor in the tub falls below a reference level, and / or when the The electrical pump power value of the pump detected by the power detection element falls below a reference power value.
- the laundry care device has a vibration detection element for detecting vibration values of the vibration system, wherein the vibration detection element is designed to detect a first oscillation value during the first detection interval and to detect a second oscillation value during the second detection interval, and the controller is designed to a laundry tunnel inside the laundry drum to detect laundry brought in when the second electrical power value corresponds to the first electrical power value and when the first oscillation value corresponds to the second oscillation value.
- the vibration value of the vibration system can also advantageously be used to confirm the presence of a laundry tunnel within the laundry drum. If the size of the laundry tunnel within the rotating laundry drum no longer changes, the detected vibration values also remain the same during the first and second detection intervals.
- the laundry care device has an air flow element which is designed to guide an air flow to the laundry drum, the laundry care device has
- Air flow detection element for detecting air flow values from an air flow emerging from the laundry drum, the controller being designed to detect a laundry tunnel within laundry introduced into the laundry drum if the second electrical power value corresponds to the first electrical power value and if an during the first and / or Second acquisition interval acquired air flow value falls below or exceeds an air flow reference value.
- the air flow of air through the laundry drum can also advantageously be used in order to confirm the presence of a laundry tunnel within the laundry drum. If a stable laundry tunnel has formed in the laundry drum, the supplied air can advantageously flow through the laundry tunnel and an air flow value that is too low or too high is detected.
- the power detection element is designed to detect at least one further electrical power value of the drum drive during at least one further detection interval of the detection time segment following the second detection interval, and the controller is designed to create a non-changing laundry tunnel within the laundry drum recorded laundry when the at least one further electrical power value corresponds to the first and / or second electrical power value.
- the controller is designed to activate the drum drive during the first detection interval in order to rotate the laundry drum during the first detection interval at a first maximum range speed which is greater than the resonance speed, the controller being designed to operate the drum drive during the to activate the second detection interval in order to rotate the laundry drum during the second detection interval at a second maximum range speed which is greater than the resonance speed and which differs from the first maximum range speed, and wherein the control is designed in particular to activate the drum drive during at least one to activate the second detection interval subsequent further detection interval in order to activate the laundry drum during the at least one further detection interval with a further maximum range speed which is greater than the resonance speed ahl is to rotate, and which differs from the first maximum range speed and / or the second maximum range speed.
- the controller is designed to activate the drum drive during at least one reduction time segment between two successive detection intervals in order to rotate the laundry drum at a speed that is, in particular, greater than a resonance speed but less than that Maximum speed, in particular less than the first, second and / or further maximum range speed.
- the second maximum range speed is greater than the first maximum range speed, the at least one further maximum range speed being greater than the second maximum range speed, or wherein the at least one further maximum range speed comprises a plurality of further maximum range speeds, each of which is greater and / or lower than the are first and / or second maximum range speed.
- a sufficiently high rotational speed of the laundry drum can be provided during the detection time segment, which is sufficient for the laundry to lie against the laundry drum.
- the maximum range speeds are continuously increased from the first, through the second, to the at least one further detection time segment until a speed limit value is reached at which no further improvement occurs, so that the control can determine step by step whether there is a laundry tunnel has formed.
- the first maximum range speed is increased to the second maximum range speed, but the further maximum range speeds are varied during the further detection time segments, so that the further maximum range speeds are greater and / or lower than the first and / or second maximum range speed.
- the formation of a uniformly formed laundry tunnel can be supported by braking and / or accelerating the speed of the laundry drum.
- the first, second and / or further electrical power value comprises a difference in each case between a first, second and / or further acceleration power value and a first, second and / or further no-load power value, the respective no-load power value being one by the ok
- Power detection element corresponds to detected electrical power value of the electric drum drive, which was detected when rotating the laundry drum at a constant speed, and the respective
- Acceleration power value corresponds to an electrical power value of the electric drum drive detected by the power detection element, which was detected when the speed of the laundry drum was increased.
- the controller is designed to activate the drum drive in order to change the speed of the laundry drum if the first and second electrical power values differ, and / or the controller is designed to repeat the detection time segment when the first and second electrical power value differentiate.
- control can then subsequently detect a stable laundry tunnel by changing the speed of the rotating laundry drum or by repeating the detection time segment in a new measuring process.
- the object of 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, a laundry drum for receiving laundry, the laundry drum being arranged in the tub, a vibrating system which is designed to swing the laundry drum and the tub in the laundry care device, a drum drive for rotating the laundry drum during a washing period, a controller for controlling the drum drive, and a power detection element for detecting an electrical power value of the Comprising the drum drive, the method comprising the following steps, activating the drum drive by the controller during a detection time segment of the washing period to rotate the laundry drum, detecting a first electrical power value of the drum drive during a first detection interval of the detection time segment by the power detection element, detecting a second electrical Power value of the drum drive during a second detection interval of the detection time segment by the
- Power detection element and detection of a non-changing laundry tunnel within the laundry received in the laundry drum when the second electrical power value corresponds to the first electrical power value.
- inventions characterized as advantageous embodiments for the laundry care device according to the first aspect are likewise advantageous embodiments for the method according to the second aspect.
- FIG. 1 shows a schematic view of a laundry care device
- FIG. 2 shows a schematic view of a laundry care device with a control
- FIG. 3 shows a schematic representation of the supply of washing liquid into a laundry tunnel formed in the laundry drum
- FIG. 4 shows a graphic representation of a laundry care process according to a first embodiment
- 5 shows a graphic representation of a laundry care process according to a second embodiment
- FIG. 6 shows a graphic representation of a laundry care process according to a third embodiment
- FIG. 7 shows a graphic representation of a laundry care process according to a fourth embodiment.
- FIG. 8 shows a schematic representation of a method for caring for laundry in a laundry care device.
- FIG 1 shows a schematic view of a general laundry care appliance 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 has a device housing 102.
- the laundry care device 100 comprises an appliance 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 is arranged in the tub 105.
- the tub 105 and the laundry drum 107 arranged in the tub 105 are pivotably mounted in the laundry care appliance 100 by an oscillating system 109 of the laundry care device 100.
- the tub 105 has a drain opening 111.
- the laundry care device 100 has a feed element 113.
- the discharge opening 111 is fluidically connected to the supply element 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 pump washing liquid through the drain opening 111 from the tub 105 during a pumping process not shown in FIG. 2 into the liquid line 115 and the washing liquid through the liquid line 115 and through the feed element 113 to the tub 105 and the laundry drum Feed 107 again.
- the washing liquid can be effectively pumped around through the liquid line 115 during a laundry care process and fed back to the laundry in the laundry drum 107.
- the liquid line 115, the pump 117 and the supply element 113 are thus designed as a washing liquid supply device 118 - 1 for supplying washing liquid into the laundry drum 107.
- the washing liquid supply device 118-1 in particular the supply element 113, is designed to direct the washing liquid in a directed manner into a washing tunnel formed within the washing in the rotating washing drum 107.
- 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 for rotating the laundry drum 107 by a second control connection 125.
- the controller 119 is also connected by a third control connection 127 to a further washing liquid supply device 118-2 for supplying washing liquid into the laundry drum 107, the further washing liquid supply device 118-2 being connected to the tub 105 by a supply line 129.
- the further washing liquid supply device 118-2 comprises a rinsing bowl 101, not shown in FIG. 2, of the laundry care device 100 and / or a dispenser in FIG.
- the fresh water connection of the laundry care device 100 (not shown), the controller 119 being designed to activate a wash liquor supply via the dispenser 101 and / or the fresh water connection in order to supply wash liquor and / or fresh water as washing liquid into the laundry drum 107.
- the laundry care device 100 also has a power detection element 131 for detecting an electrical power value of the drum drive 123.
- the power detection element 131 is designed to detect a torque-generating current intensity and / or an electrical power consumption of the drum drive 123 as an electrical power value of the drum drive 123.
- the power acquisition element 131 can also be connected to other electrical components of the laundry care device 100, in particular the pump 117, in order to acquire electrical power values of the other electrical components, in particular the pump 117.
- the power detection element 131 is arranged in the controller 119.
- the power detection element 131 can be arranged in particular outside the controller 119, as is not shown in FIG. 2.
- the power detection element 131 can be arranged, in particular, within the drum drive 123.
- the laundry care device 100 further comprises an outlet line 128 which is fluidically connected to the liquid line 115.
- the pump 117 is designed to pump out washing liquid through the drain opening 111 from the tub 105, through the liquid line 115 and through the outlet line 128 from the laundry care appliance 100 during a pumping process (not shown in FIG. 2).
- FIG 3 shows a schematic representation of the supply of washing liquid into a laundry tunnel formed in the laundry drum.
- FIG. 3 a laundry drum 107 of the laundry care device 100 is shown, which can be rotated by a drum drive 123, not shown in FIG. 3, about an axis of rotation 132 in a first direction of rotation 133-1 and / or a second direction of rotation 133-2.
- An appliance door 103 of the laundry care appliance 100 is shown only in sections.
- the wetting of the laundry 135 accommodated in the laundry drum 107 with washing liquid takes place most quickly if it takes place radially, in particular by pumping or central spraying of washing liquid.
- the formation of a laundry tunnel 137 is necessary, the formation of the laundry tunnel 137 being correlated with the centrifugal acceleration of the laundry 135 due to the rotation of the laundry drum 107.
- an inflow 139 of washing liquid can be fed to the laundry tunnel 137 by a washing liquid supply device 118 - 1, in particular a supply element 113.
- the washing liquid can wet the laundry 135 radially along a radial wetting direction 143 due to the centrifugal acceleration.
- FIG. 4 shows a graphic representation of a laundry care process according to a first embodiment.
- the washing period 149 illustrated in FIG. 4 comprises a maximum period 151 and a drum period 153 following the maximum period 151.
- the first curve 140-1 shown in FIG. 4 shows the temporal course of the speed of a laundry drum 107 rotated by a drum drive 123.
- the controller 119 is designed, the drum drive 123 during the maximum period of time 151 of the washing period 149 to rotate the laundry drum 107 at a maximum speed 155, the maximum speed 155 being greater than a resonance speed 157 of the laundry drum 107.
- the resonance speed 157 is a speed of the laundry drum 107 at which an oscillation frequency of the oscillation system 109 corresponds to a natural oscillation frequency of the oscillation system 109.
- the second curve 140-2 shown in FIG. 4 shows an electrical power value of the drum drive 123 detected by a power detection element 131, in particular a torque-generating current intensity or a drive torque derived from the torque-generating current intensity.
- the detected electrical power value 165 increases until it remains constant as soon as the speed of the rotating laundry drum 107 has reached the maximum speed 155.
- the constant course of the detected electrical power value 165 during the rotation of the laundry drum 107 at the maximum speed 155 allows the conclusion that a stable laundry tunnel 137 has formed within the laundry 135 received in the laundry drum 107, which no longer changes.
- the power detection element 131 detects a first electrical power value 165-1 of the drum drive 123 during a first detection interval 163-1 of a detection time segment 163, and detects a second electrical power value 165- during a second detection interval 163-2 following the first detection interval 163-1. 2 of the drum drive 123.
- a controller 119 of the laundry care device 100 is then designed to detect a non-changing laundry tunnel 137 within the laundry 135 received in the laundry drum 107 when the second electrical power value 165-2 corresponds to the first electrical power value 165-1, as can be seen from the curve in FIG second curve 140-2 can be seen.
- the controller 119 then activates the drum drive 123 when a non-changing laundry tunnel 137 has been detected during a detection time segment 163, in particular the maximum time segment 151, subsequent drum period 153 of the washing period 149, in order to rotate the laundry drum 107 at a drum speed 159.
- the drum speed 159 is greater than a detachment speed 161 of the laundry drum 107 and lower than the resonance speed 157 of the laundry drum 107, the detachment speed 161 being a maximum speed of the laundry drum 107 at which the laundry 135 received in the laundry drum 107 moves away from the laundry drum 107 solves.
- drum speed 159 is greater than the detachment speed 161
- drum speed 159 is lower than the maximum speed 155 and also lower than the resonance speed 157, energy can be saved and in particular a buildup of the oscillating system 109 due to resonance can be prevented, which leads to a reduction in vibration during the laundry care process.
- control 119 can in particular activate a washing liquid supply device 118-1 of the laundry care device 100 for supplying washing liquid into the laundry drum 107 during the washing period in order to add washing liquid to the laundry tunnel 137 feed inside the rotating laundry drum 107.
- the controller 119 can activate the washing liquid supply device 118 - 1 at any point in time during the washing period 149 in order to supply washing liquid to the laundry 135 in the laundry drum 107.
- the controller 119 can activate the washing liquid supply device 118-1 in order to supply washing liquid to the laundry 135 in the laundry drum 107 when the second electrical power value 165-2 corresponds to the first electrical power value 165-1. It can thereby be ensured that the washing liquid supplied by the washing liquid supply device 118-1 can be supplied, in particular injected, into a stable laundry tunnel 137 within the laundry drum 107.
- the washing liquid fed into the laundry tunnel 137 is driven through the laundry 135 delimiting the laundry tunnel 137 due to the centrifugal force caused by the rotation of the laundry drum 107, so that an advantageous and complete wetting of the laundry 135 in the laundry drum 107 can be ensured.
- the controller 119 can activate the washing liquid supply device 118 - 1 during the maximum time segment 151 and / or drum time segment 153 in order to supply washing liquid to the laundry 135 in the laundry drum 107.
- the controller 119 can activate the washing liquid supply device 118 - 1 during the maximum time segment 151 in order to supply washing liquid to the laundry 135.
- no laundry tunnel 137 may have formed during the maximum time segment 151, so that in this case the washing liquid supplied merely pre-wets the laundry 135.
- the washing liquid supply device 118-1 can be activated by the controller 119, for example during the drum period 153, in order to supply washing liquid into the then stable laundry tunnel 137 within the rotating laundry drum 107.
- the pre-wetted laundry when the laundry 135 is pre-wetted with washing liquid, the pre-wetted laundry, compared to dry laundry, is displaced more outward over time during the rotation of the laundry drum 107, which is particularly influenced by the flow resistance of the laundry 135 so that the moment of inertia of the laundry 135 is thereby increased.
- a continuous pumping of washing liquid in the Laundry care device 100 can be carried out so that the mass of the laundry can be increased by the absorption of the washing liquid by the laundry.
- the washing liquid supply device 118 - 1 has a pump 117 which is designed to pump washing liquid out of the tub 105 and to supply the washing liquid again to the laundry 135 in the laundry drum 107.
- the controller 119 is designed to activate the pump 117 during the washing period 149, in particular during the detection time segment 163, during the maximum time segment 151 and / or during the drum time segment 153, in order to pump washing liquid and supply the pumped washing liquid to the laundry 135 received in the laundry drum 107 .
- the washing liquid exits through the jacket of the washing drum 107, it can be pumped around by the pump 117 and again supplied to the washing 135 in the washing drum 107, so that a stable washing liquid gradient is established within the washing 135 accommodated in the washing drum 107.
- the controller 119 activates the pump 117 for pumping washing liquid during the acquisition time segment 163, the corresponding first and second electrical power values 165-1, 165-2 can then be acquired during the first and second acquisition intervals 163-1, 163-2 , on the basis of which, as before with dry laundry 135, the moment of inertia of the laundry drum 107 can be detected.
- the controller 119 is designed in particular to deactivate the pump 117 or to reduce the pumping power of the pump 117 when the level of washing liquid in the tub 105, detected by a filling level sensor located in the tub 105, has a reference fill level falls below, and / or if an electrical pump power value of the pump 117 detected by the power detection element 131 falls below a reference pump power value.
- the third curve 140-3 shown schematically in FIG. 4 shows an electrical power value 165 of the drum drive 123 detected by a power detection element 131 in a laundry tunnel 137, which is not yet completely has trained.
- the first and second electric power values 165-1, 165-2 which were detected during the first and second detection intervals 163-1 and 163-2 differ.
- the second electrical power value 165-2 is greater than the first electrical power value 165-1, so that the controller 119 detects that the laundry tunnel 137 is still growing, that is to say that a stable laundry tunnel 137 has not yet formed.
- the controller 119 can in this case, if the first and second electrical power values 165-1, 165-2 differ, activate the drum drive 123 in order to change the rotational speed of the laundry drum 107 , and / or the controller 119 can repeat the acquisition period 163. As a result, the laundry 135 within the rotating laundry drum 107 can be acted upon in such a way that a stable laundry tunnel 137 is formed, and then the detected first and second electrical power values 165-1, 165-2 are the same.
- FIG. 5 shows a graphic representation of a laundry care process according to a second embodiment.
- FIG. 5 shows a time representation of the speed of the laundry drum 107 according to a fourth curve 140-4 and an electrical power value 165 of the drum drive 123 detected by a power detection element 131 according to a fifth curve 140-5, which along the ordinate axis 145 as a function of time, which is indicated along the axis of abscissa 147 are plotted.
- the second embodiment shown in FIG. 5 also has a maximum period 151 during the washing period 149 and a drum period 153 following the maximum period 151, the laundry drum 107 at a maximum speed during the maximum period 151 155 is rotated, which is greater than is the resonance speed 157, and wherein the laundry drum 107 is rotated during the drum period 153 at a drum speed 159 which is greater than the detachment speed 161 and less than the resonance speed 157.
- the acquisition time segment 163 corresponds to the maximum time segment 151.
- the maximum time segment 151 is subdivided into a plurality of maximum time segment areas 151-1, 151-2, 151-3, in particular three maximum time segment areas 151-1, 151-2, 151-3, wherein in the respective maximum time segment area 151- 1, 151-2, 151-3 the laundry drum 107 is rotated with a respective different maximum range speed 155-1, 155-2, 155-3.
- a first idling power value 165-3 and a first accelerating power value 165-5 become during the first detection interval 163-1, and a second idling power value 165-4 and a second become during the second detection interval 163-2 Acceleration power value 165-6 recorded.
- the respective idling power value 165-3, 165-4 reflects the drive torque of the drum drive 123 at a constant maximum range speed 155-1, 155-2.
- the respective acceleration power value 165-5, 165-6 gives the drive torque of the drum drive 123 when accelerating from the first to the second maximum range speed 155-1, 155-2, or when accelerating from the second to the third maximum range speed 155-2, 155-3 again.
- the first electrical power value 165-1 here comprises the difference between the first acceleration power value 165-5 and the first idling power value 165-3.
- the second electrical power value 165-2 here comprises the difference between the second acceleration power value 165-6 and the second idling power value 165-4.
- control 119 is designed to detect a non-changing laundry tunnel 137 within the laundry 135 received in the laundry drum 107, when the second electric power value 165-2 corresponds to the first electric power value 165-1.
- the advantage of the iterative acquisition of electrical power values 165 with a continuous increase in the speed of the laundry drum 107 during the acquisition time segment 163 is that the specific maximum speed 155 can be targeted during the maximum time segment 151, which is required to form the laundry tunnel 137.
- FIG. 6 shows a graphic representation of a laundry care process according to a third embodiment.
- Fig. 6 shows a time representation of the speed of the laundry drum 107 according to a sixth curve 140-6 and an electrical power value 165 of the drum drive 123 detected by a power detection element 131 according to a seventh curve 140-7, which along the ordinate axis 145 as a function of time, which is indicated along the axis of abscissa 147 are plotted.
- the acquisition time segment 163 of the third exemplary embodiment shown in FIG. 6 has, in addition to the first and second acquisition intervals 163-1, 163-2, a plurality of further acquisition intervals 163-3, which follow the second Connect the detection interval 163-2, the power detection element 131 being designed to detect a further electrical power value 165-7 of the drum drive 123 during each of the further detection intervals 163-3.
- the respective electrical power value 165-1, 165-2, 165-7 here comprises the difference between the respective acceleration power value 165-5, 165-6, 165-8 and the respective idle power value 165-3, 165-4, 165-9.
- the maximum time segment 151 further comprises a plurality of maximum time segment areas 151-1, 151-2, 151-3, 151-4, 151-5, wherein in the respective maximum time segment area 151-1, 151-2, 151-3, 151-4, 151-5 the laundry drum 107 is rotated at a respective different maximum range speed 155-1, 155-2, 155-3.
- the respective maximum range speed includes 155-1, 155-2, 155-3 different high speeds, with a reduction time section 152 taking place between the respective maximum time section ranges 151-1, 151-2, 151-3, 151-4, 151-5, in which the laundry drum 107 is rotated at a speed which is greater than the resonance speed 157 is less than the maximum speed 155, in particular less than the maximum range speeds 155-1, 155-2, 155-3.
- FIG. 7 shows a graphic representation of a laundry care process according to a fourth embodiment.
- FIG. 7a shows a time representation of the rotational speed of the laundry drum 107 according to an eighth curve 140-8 and FIG. 7b shows a time representation of a vibration value of the vibration system 109 detected by a vibration detection element according to a ninth curve 140-9, which runs along the ordinate axis 145 in FIG Dependence of the time, which is indicated along the abscissa axis 147, are plotted.
- the oscillation detection element is designed to detect a first oscillation value 166-1 during the first detection interval 163-1 and a second oscillation value 166-2 during the second detection interval 163-2.
- the controller 119 can also use the detected vibration values 166-1, 166-2 to determine the laundry tunnel 137.
- the controller 119 is thus designed to detect a laundry tunnel 137 within laundry 135 placed in the laundry drum 107 if the second electrical power value 165-2 corresponds to the first electrical power value 165-1 and if the first oscillation value 166-1 corresponds to the second oscillation value 166- 2 corresponds.
- the detection of the resistance of the laundry 135 received in the laundry drum 107 to an air flow can also be taken into account.
- the laundry care device 100 has an air flow element which is designed to guide an air flow to the laundry drum 107, the laundry care device 100 having an air flow detection element for detecting air flow values from an air flow emerging from the laundry drum 107.
- the controller 119 is designed to detect a laundry tunnel 137 within the laundry 135 placed in the laundry drum 107 if the second electrical power value 165-2 corresponds to the first electrical power value 165-1 and if a during the first and / or second detection interval 163- 1, 163-2 detected air flow value falls below or exceeds an air flow reference value.
- the air resistance in the laundry drum 107 is very high, because the air has to flow through narrow spaces or through the gap between the cuff and the laundry drum 107. If, on the other hand, a laundry tunnel 137 has formed, the air resistance drops significantly so that an air flow reference value for the presence of a laundry tunnel 137 can be established as a function of the laundry care device 100 and / or the laundry load.
- FIG. 8 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 drum drive 123 by the controller 119 during a detection time segment 163 of the washing period 149 in order to rotate the laundry drum 107.
- the method 200 comprises, as a second method step, the acquisition 203 of a first electrical power value 165-1 of the drum drive 123 during a first acquisition interval 163-1 of the acquisition time segment 163 by the power acquisition element 131.
- the method 200 comprises, as a third method step, the detection 205 of a second electrical power value 165-2 of the drum drive 123 during a second detection interval 163-1 of the detection time segment 163 by the power detection element 131.
- the method 200 comprises, as a fourth method step, the detection of 207 a non-changing laundry tunnel 137 within the laundry received in the laundry drum 107 when the second electrical power value 165-2 corresponds to the first electrical power value 165-1.
- Second method step Detecting a first electrical power value 205
- Third method step Detecting a second electrical power value 207
- Fourth method step Detecting a laundry tunnel that does not change
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102019213017.8A DE102019213017A1 (de) | 2019-08-29 | 2019-08-29 | Wäschepflegegerät mit einer Steuerung |
| PCT/EP2020/072372 WO2021037539A1 (de) | 2019-08-29 | 2020-08-10 | Wäschepflegegerät mit einer steuerung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4022120A1 true EP4022120A1 (de) | 2022-07-06 |
| EP4022120B1 EP4022120B1 (de) | 2023-12-13 |
Family
ID=72234806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP20761157.5A Active EP4022120B1 (de) | 2019-08-29 | 2020-08-10 | Wäschepflegegerät mit einer steuerung |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4022120B1 (de) |
| CN (1) | CN114341418A (de) |
| DE (1) | DE102019213017A1 (de) |
| WO (1) | WO2021037539A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12351967B2 (en) * | 2022-10-26 | 2025-07-08 | Haier Us Appliance Solutions, Inc. | Washing machine appliance non-shedding load detection |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4210577C2 (de) * | 1992-03-31 | 1996-10-24 | Aeg Hausgeraete Gmbh | Verfahren zum Spülschleudern von Wäsche in einer programmgesteuerten Waschmaschine |
| DE4336349A1 (de) * | 1993-10-25 | 1995-04-27 | Bosch Siemens Hausgeraete | Verfahren zum Bestimmen der Masse von nasser Wäsche in einer Wäschetrommel |
| DE19641309B4 (de) * | 1996-10-08 | 2014-07-31 | Electrolux Rothenburg Gmbh Factory And Development | Trommelwaschmaschine |
| DE10326551A1 (de) * | 2003-06-12 | 2005-01-05 | BSH Bosch und Siemens Hausgeräte GmbH | Wasch- und Spülverfahren für eine Waschmaschine |
| KR20090119560A (ko) * | 2008-05-16 | 2009-11-19 | 엘지전자 주식회사 | 세탁물 처리기기 |
| EP2348151B1 (de) * | 2010-01-25 | 2017-07-05 | Miele & Cie. KG | Verfahren zum Betreiben einer Waschmaschine mit Umfluteinrichtung |
| KR101506146B1 (ko) * | 2012-02-03 | 2015-03-26 | 삼성전자 주식회사 | 세탁기 및 그 제어 방법 |
| DE102013104075A1 (de) * | 2013-04-23 | 2014-10-23 | Miele & Cie. Kg | Verfahren zum Betreiben einer Waschmaschine und Waschmaschine |
| DE102014104962A1 (de) * | 2014-04-08 | 2015-10-08 | Miele & Cie. Kg | Wasserzulaufsteuerung und Waschvollautomat |
| KR20160010306A (ko) * | 2014-07-18 | 2016-01-27 | 가부시끼가이샤 도시바 | 드럼식 세탁기 |
| DE102016216391A1 (de) * | 2016-08-31 | 2018-03-01 | BSH Hausgeräte GmbH | Wäschepflegegerät mit einer Umleitvorrichtung |
| DE102016225146B3 (de) * | 2016-12-15 | 2018-05-03 | BSH Hausgeräte GmbH | Wäschepflegegerät mit einer Steuerung |
-
2019
- 2019-08-29 DE DE102019213017.8A patent/DE102019213017A1/de not_active Withdrawn
-
2020
- 2020-08-10 WO PCT/EP2020/072372 patent/WO2021037539A1/de not_active Ceased
- 2020-08-10 EP EP20761157.5A patent/EP4022120B1/de active Active
- 2020-08-10 CN CN202080060227.9A patent/CN114341418A/zh active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE102019213017A1 (de) | 2021-03-04 |
| CN114341418A (zh) | 2022-04-12 |
| EP4022120B1 (de) | 2023-12-13 |
| WO2021037539A1 (de) | 2021-03-04 |
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