DE102019213015A1 - Laundry care device with one control - Google Patents

Abstract

The present invention relates to a method 200 for caring for laundry 135 and a laundry care device 100 set up to carry it out, with a tub 105 for receiving washing liquid, a laundry drum 107 which is arranged in the tub 105, a swing system 109 for swinging the laundry drum 107 and of the tub 105 in the laundry care device 100, a drum drive 123 and a controller 119 for controlling the drum drive 123. The controller is designed 119 to activate the drum drive 123 during a maximum period 151 of a washing period 149 in order 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 controller 119 is designed to activate the drum drive 123 during a drum time segment 153 of the washing time period 149 that follows the maximum time segment 151 in order to activate the laundry drum 10 7 to rotate at a drum speed 159, the drum speed 159 being lower than the resonance speed 157 of the laundry drum 107 and greater than a detachment speed 161 of the laundry drum 107 in order to form and maintain a laundry tunnel 137 within the laundry 135 received in the laundry drum 107.

Description

The present invention relates to a laundry care device with a controller.

In a conventional laundry care appliance, in order to wet the laundry, the washing liquid supplied is often injected into the laundry drum through a front drum opening facing the appliance door of the laundry care appliance. With a large laundry load, the laundry in conventional laundry care devices often completely fills the volume of the laundry drum, so that complete or even wetting of the inner area of the laundry received in the laundry drum cannot be ensured in all operating states.

In the DE 195 31 656 A1 discloses a method for regulating a spin speed of a washing machine.

In the DE 10 2013 104 075 A1 discloses a method of operating a washing machine and a washing machine.

The object on which the invention is based is to specify a laundry care device in which a laundry tunnel is formed within the laundry received in the laundry drum during a laundry care process.

This object is achieved by the objects with the features according to the independent claims. Advantageous embodiments are the subject matter of the dependent claims, the description and the drawings.

According to a first aspect, the object according to 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, and a controller for controlling the drum drive, the controller being designed to activate the drum drive during a maximum period of the washing period in order to rotate the laundry drum at a maximum speed, wherein the maximum speed is 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 the controller au s is formed to activate the drum drive during a drum time segment of the washing period following the maximum time segment, in order to rotate the laundry drum at a drum speed, the drum speed being lower than the resonance speed of the laundry drum and greater than a detachment speed of the laundry drum in order to create a laundry tunnel within the to form and maintain laundry received in the laundry drum, the detachment speed being a minimum speed of the laundry drum at which the laundry received in the laundry drum is detached from the laundry drum.

This has the technical advantage that by rotating the laundry drum at the maximum speed during the maximum time segment and by rotating the laundry drum at the drum speed during the drum time segment, a laundry tunnel is formed within the laundry received in the laundry drum even with large loads of laundry. The laundry tunnel can be kept stable within the rotating laundry drum for a longer period of time, so that the laundry remains compressed inside the laundry drum and is available for further treatment steps, e.g. wetting the laundry with washing liquid.

Particularly in the case of large laundry loads, rotating the laundry drum at a speed that is less than or equal to the resonance speed is often not sufficient in conventional laundry care devices to ensure that the laundry is fully applied to the laundry drum.

For this reason, the control of the laundry care device according to the present disclosure is designed to increase the speed during the maximum period of time to the maximum speed in order to ensure that the laundry is fully applied to the laundry drum even with large laundry loads.

If the control in the laundry care device according to the present disclosure then reduces the speed of the laundry drum to the drum speed during the drum period, the laundry tunnel can be effectively formed in the laundry drum or a laundry tunnel that has formed can be maintained.

The fact that the drum speed is greater than the detachment speed prevents the laundry from collapsing again, since the detachment speed is the maximum speed of the laundry drum at which the centrifugal force acting on the laundry is not sufficient for the laundry to lay against the laundry drum . Thus, at the drum speed, which is greater than the separation speed, ensures that the laundry lies against the washing drum.

Thus, in the present case, 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. In other words, the targeted distribution of the laundry on the jacket of the laundry drum creates a cavity within the batch of laundry, which is referred to as a laundry tunnel.

Because the drum speed is lower than the resonance speed, it is ensured in a possible subsequent wetting process that washing liquid injected into the laundry tunnel is not immediately driven out again radially, but remains in the laundry for a sufficient wetting period, and that a through passage of the resonance speed caused resonant rocking of the oscillation system is reduced.

In particular, the maximum speed is between 400 rpm and 1000 rpm, in particular 500 rpm. In particular, the resonance speed is between 100 rpm and 300 rpm. In particular, the drum speed is below 100 rpm. In particular, the separation speed is below 80 rpm.

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. In particular, such 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.

In an advantageous embodiment, the laundry care device has a weight sensor which is designed to detect a weight of laundry received in the laundry drum, and the controller is designed to activate the drum drive during the maximum period of time in order to rotate the laundry drum at the maximum speed when the weight of the laundry detected by the weight sensor exceeds a weight threshold value, the weight threshold value in particular corresponding to half of the maximum laundry load of the laundry drum.

This has the technical advantage that the weight of the laundry can be effectively detected by the weight sensor, so that the control can activate the drum drive during the maximum period of time as soon as a large laundry load is detected. Half of the maximum laundry load of the laundry drum, for example, can be selected as an exemplary weight threshold value.

In particular, the weight sensor is a weighing sensor which is designed to weigh the weight of the laundry drum in order to detect the weight of the laundry received in the laundry drum. In particular, the weight sensor is a sensor which is designed to detect a lowering of the oscillating system within the laundry care device in order to detect the weight of the laundry received in the laundry drum. In particular, the weight sensor is a sensor for detecting an electrical power value of the drum drive in order to detect the weight of the laundry received in the laundry drum.

In an advantageous embodiment, the control is designed to activate the drum drive during a pre-time segment before the maximum time segment in order to rotate the laundry drum at a pre-drum speed, the pre-drum speed being greater than the detachment speed and lower than the resonance speed of the laundry drum, the control being designed in particular is to activate a washing liquid supply device of the laundry care device during the pre-time section in order to supply washing liquid into the rotating laundry drum and prewetting the laundry in the laundry drum.

This achieves the technical advantage that, in particular with low laundry loads, a laundry tunnel can be formed within the laundry drum by rotating the laundry drum at the pre-drum speed already during the pre-time period. In this case, by supplying washing liquid through the washing liquid supply device, the laundry can already be advantageously prewetted. In addition, the formation of the laundry tunnel can be improved in the maximum period of time with large loads.

In an advantageous embodiment, the controller is designed to end the early period when a level sensor arranged in the tub detects a level of washing liquid that falls below a level threshold value, and / or the controller is designed to terminate the early period when a power detection element which is designed to detect an electrical power value of a pump of a washing liquid supply device of the laundry care appliance, an electrical one The power value of the pump is recorded which falls below an electrical reference power value.

This achieves the technical advantage that by means of the detection of the fill level by the fill level sensor and / or by means of the detection of the electrical power value of the pump by the power detection element, it can be effectively detected when the fill level in the tub is too low, so that for example by the Control, the speed of the drum drive can be increased, for example to drive out washing liquid bound in the laundry again or to re-establish the laundry tunnel in the maximum period of time.

In an advantageous embodiment, the laundry care device has an imbalance sensor, in particular an acceleration sensor and / or a position sensor, which is designed to detect an imbalance in the oscillating system, the controller being designed to increase the speed of the laundry drum to a minimum speed during a detection time segment of the washing period reduce when the imbalance sensor detects an imbalance in the oscillating system, the minimum speed in particular being lower than the separation speed.

This has the technical advantage that by reducing the speed of the laundry drum to a minimum speed, an imbalance of the laundry which causes the imbalance of the laundry can be resolved when the laundry is redistributed in the laundry drum.

In an advantageous embodiment, the controller is designed to stop the rotation of the laundry drum during the detection time segment and / or to change a direction of rotation of the rotating laundry drum when the imbalance sensor detects an imbalance in the oscillating system.

This has the technical advantage that, in the event of a very large imbalance, stopping the rotation or changing the direction of rotation, in particular alternating reversing, of the laundry drum can cause items of laundry adhering to the laundry drum to fall off and possibly causing the imbalance .

In an advantageous embodiment, the controller is designed to limit the maximum speed during the maximum time segment if the imbalance sensor detects an imbalance of the oscillating system during the detection time segment before the maximum time segment.

This has the technical advantage that, in the event of a large imbalance detected by the imbalance sensor, damage to the oscillating system can be prevented by limiting the maximum speed.

In an advantageous embodiment, the controller is designed to activate the drum drive in order to keep the maximum speed constant during the maximum time segment.

This achieves the technical advantage that by constantly maintaining the maximum speed during the maximum period of time, a maximum speed plateau is achieved through which the formation of the laundry tunnel can be reinforced.

In an advantageous embodiment, the laundry care device has a washing liquid supply device for supplying washing liquid into the laundry drum, and the controller is designed to operate the washing liquid supply device during the washing period, in particular during the pre-time segment, and / or during the maximum time segment, and / or during the detection time segment, and / or to be activated during the drum period in order to supply washing liquid into the laundry tunnel formed within the laundry drum.

This has the technical advantage that effective wetting of the interior of the laundry load can also be ensured. Washing liquid introduced into the laundry tunnel can flow radially through the laundry delimiting the laundry tunnel due to the centrifugal force acting as a result of the rotation of the laundry drum, in order to ensure effective and complete wetting of the laundry. In this case, the washing liquid supply device comprises, in particular, a supply element which is arranged to inject the washing liquid into the laundry tunnel in a directed manner.

In an advantageous embodiment, the control is designed to activate the washing liquid supply device in a first operating mode in order to supply washing liquid with a first flow rate into the laundry drum, and the control is designed to activate the washing liquid supply device in at least one further operating mode in order to supply washing liquid with a further The flow rate, which is greater than the first flow rate, is fed into the laundry drum in order to vary the point of impact of the washing liquid in the laundry tunnel formed in the rotating laundry drum.

This has the technical advantage that the different flow speeds of the through the Washing liquid supply device supplied washing liquid the washing liquid jet at different points of impact hits the laundry delimiting the laundry tunnel, so that different areas of the laundry can be advantageously wetted.

In an advantageous embodiment, the control is designed to determine the first flow speed in such a way that the point of impact of the washing liquid during the first operating mode is arranged on a laundry drum front side of the laundry drum facing the front of the laundry care appliance, and / or the control is designed to set the further flow speed in such a way to determine that the point of impact of the washing liquid is arranged on a laundry drum rear side of the laundry drum facing away from the front of the laundry care appliance.

This achieves the technical advantage that by aligning the point of impact with the front side of the washing drum and / or the rear side of the washing drum, different areas of the washing drum can be wetted with washing liquid which are otherwise difficult to access.

In an advantageous embodiment, the controller is designed to change the operating mode of the washing liquid supply device between the first operating mode and the at least one further operating mode, in particular to change it in stages or continuously.

This has the technical advantage that a change, in particular a stepwise or continuous change, between the operating modes also changes the point of impact of the washing liquid on the laundry, so that an advantageously large area of the laundry delimiting the laundry tunnel can be wetted with washing liquid.

According to a second aspect, 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, has a drum drive for rotating the laundry drum during a washing period, and a controller for controlling the drum drive, the method comprising the following method steps: activating the drum drive during a maximum period of the washing period by the controller 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 a swing frequency of the oscillating system corresponds to a natural oscillation frequency of the oscillating system; and activating the drum drive during a drum time segment of the washing period subsequent to the maximum time segment by the controller in order to rotate the laundry drum at a drum speed, the drum speed being less than the resonance speed of the laundry drum and greater than a detachment speed of the laundry drum in order to create a laundry tunnel within the to form and maintain laundry received in the laundry drum, the detachment speed being a minimum speed of the laundry drum at which the laundry received in the laundry drum is detached from the laundry drum.

This achieves the technical advantage that a laundry tunnel can particularly advantageously be formed in the laundry.

In an advantageous embodiment, the laundry care device has an imbalance sensor, in particular an acceleration sensor and / or position sensor, which is designed to detect an imbalance of the oscillating system, the method further comprising the following step: reducing the speed of the laundry drum to a minimum speed during a detection period of the Washing period by the control when the imbalance sensor detects an imbalance in the oscillating system, the minimum speed in particular being lower than the separation speed.

This has the technical advantage that the imbalance can be reduced by reducing the speed to the minimum speed.

In an advantageous embodiment, the laundry care device has a washing liquid supply device for supplying washing liquid into the laundry drum, and comprises activating the drum drive during the maximum time segment and / or activating the drum drive during the drum time segment of the washing period furthermore includes activating the washing liquid supply device to add washing liquid to the to supply laundry tunnel formed within the laundry drum.

This has the technical advantage that effective wetting of the laundry in the laundry drum can be ensured.

For the laundry care device according to the first aspect as advantageous embodiments The identified embodiments are also advantageous embodiments for the method according to the second aspect.

Embodiments of the invention are shown in the drawings and are described in more detail below.

• 1 eine schematische Ansicht eines Wäschepflegegeräts;
• 2 eine schematische Ansicht eines Wäschepflegegeräts mit einer Steuerung;
• 3 eine schematische Darstellung der Zuführung von Waschflüssigkeit in einen in der Wäschetrommel gebildeten Wäschetunnel;
• 4 eine graphische Darstellung eines Wäschepflegevorgangs gemäß einer ersten Ausführungsform;
• 5 eine graphische Darstellung eines Wäschepflegevorgangs gemäß einer zweiten Ausführungsform;
• 6 eine graphische Darstellung eines Wäschepflegevorgangs gemäß einer dritten Ausführungsform;
• 7 eine graphische Darstellung eines Wäschepflegevorgangs gemäß einer vierten Ausführungsform;
• 8 eine schematische Darstellung eines Wäschepflegevorgangs gemäß einer fünften Ausführungsform; und
• 9 eine schematische Darstellung eines Verfahrens zum Pflegen von Wäsche in einem Wäschepflegegerät.

Show it:

• 1 a schematic view of a laundry care device;
• 2 a schematic view of a laundry care device with a controller;
• 3rd a schematic representation of the supply of washing liquid into a laundry tunnel formed in the laundry drum;
• 4th a graphic representation of a laundry care process according to a first embodiment;
• 5 a graphic representation of a laundry care process according to a second embodiment;
• 6th a graphic representation of a laundry care process according to a third embodiment;
• 7th a graphic representation of a laundry care process according to a fourth embodiment;
• 8th a schematic representation of a laundry care process according to a fifth embodiment; and
• 9 a schematic representation of a method for caring for laundry in a laundry care device.

1 Figure 12 shows a schematic view of a general laundry care appliance 100 such as a washing machine. The laundry care device 100 includes a bowl 101 into which detergent or other liquid substances can be poured. The laundry care device 100 has a device housing 102 on. The laundry care device 100 includes an appliance door 103 for loading the laundry care device 100 with laundry.

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 to pick up laundry. The laundry drum 107 is in the tub 105 arranged. Here is the tub 105 and the one in the tub 105 arranged laundry drum 107 by an oscillating system 109 of the laundry care device 100 in the laundry care device 100 pivotably mounted. The suds container 105 has a drain port 111 on. The laundry care device 100 has a feed element 113 on. The drain hole 111 is through a liquid line 115 with the feed element 113 fluidly connected, being in the liquid line 115 a pump 117 for pumping washing liquid through the liquid line 115 is arranged.

The pump 117 can wash liquid through the drain hole 111 from the tub 105 during an in 2 pumping process, not shown, into the liquid line 115 pump and the washing liquid through the liquid line 115 and through the feed element 113 the suds container 105 and the laundry drum 107 feed again. As a result, the washing liquid can effectively through the liquid line during a laundry care process 115 be pumped around and the laundry in the washing drum 107 be fed again.

Thus, the liquid line 115 , the pump 117 and the feed element 113 as a washing liquid supply device 118-1 for feeding washing liquid into the washing drum 107 educated.

Here is the washing liquid supply device 118-1 , in particular the feed element 113 , formed, the washing liquid directed into one inside the laundry in the rotating laundry drum 107 formed laundry tunnel. In particular, the feed element 113 as an angled feeding element 113 educated.

The laundry care device 100 further comprises a controller 119 which with the pump 117 through a first control connection 121 is connected, and which with a drum drive 123 for rotating the laundry drum 107 through a second control connection 125 connected is.

The control 119 is also through a third control connection 127 with a further washing liquid supply device 118-2 for feeding washing liquid into the washing drum 107 connected, the further washing liquid supply device 118-2 through a feed line 129 with the suds container 105 connected is.

In particular, the further washing liquid supply device comprises 118-2 one in 2 Dispenser, not shown 101 of the laundry care device 100 and / or an in 2 Fresh water connection, not shown, of the laundry care device 100 , with the controller 119 is designed, a wash liquor inlet via the dispenser 101 and / or to activate the fresh water connection to wash liquor and / or fresh water as Washing liquid in the washing drum 107 to feed.

The laundry care device 100 further comprises a power sensing element 131 for detecting an electrical power value of the drum drive 123 on. In the in 1 The embodiment shown is the power sensing element 131 especially in the controls 119 arranged.

According to an alternative embodiment, the power detection element 131 especially in the drum drive 123 be arranged. According to an alternative embodiment, the power detection element 131 especially outside of the drum drive 123 and / or the controller 119 be arranged and with the drum drive 123 and / or the controller 119 be connected in terms of control technology.

In particular, the power recording element is 131 formed, a torque-generating current strength and / or an electrical power consumption of the drum drive 123 as the electrical power value of the drum drive 123 capture.

The laundry care device 100 further comprises an outlet conduit 128 , which with the liquid line 115 is fluidly connected. The pump 117 is trained during an in 2 Not shown pumping 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 device 100 to pump out. Here the pump 117 in particular comprise two pumping units, one of the pumping units taking the washing liquid through the outlet line 128 from the laundry care device 100 pumps out, and wherein the other of the pump units the washing liquid through the liquid line 115 the laundry drum 107 feeds.

3rd shows a schematic representation of the supply of washing liquid into a laundry tunnel formed in the laundry drum.

In the 3rd is a laundry drum 107 of the laundry care device 100 represented by an in 3rd drum drive not shown 123 around an axis of rotation 132 in a first direction of rotation 133-1 and / or second direction of rotation 133-2 can be rotated. An appliance door 103 of the laundry care device 100 is only shown in sections.

The wetting of the laundry drum 107 recorded laundry 135 with washing liquid takes place the fastest if it takes place radially, in particular by pumping or central spraying of washing liquid. For radial wetting of the laundry 135 is the creation of a laundry tunnel 137 required, with the formation of the laundry tunnel 137 with the centrifugal acceleration of the laundry 135 by the rotation of the washing drum 107 and the laundry mass, which increases as a result of the washing liquid supply, is correlated.

Has a laundry tunnel 137 in the laundry 135 can be formed by a washing liquid supply device 118-1 , in particular a feed element 113 , an inflow 139 of washing liquid in the laundry tunnel 137 are fed. At the point of impact 141 the washing liquid in the laundry tunnel 137 the washing liquid can wash the laundry due to centrifugal acceleration 135 along a radial wetting direction 143 wet radially.

According to the present disclosure, it is ensured that even with large loads of laundry 135 a sufficiently large laundry tunnel 137 is formed, which is sufficiently large to allow a sufficiently large amount of washing liquid 139 can penetrate to ensure effective radial wetting of the laundry 135 to enable.

4th shows a graphic representation of a laundry care process according to a first embodiment.

4th shows a representation of the speed of the laundry drum over time 107 which along the ordinate axis 145 as a function of time, which is along the abscissa axis 147 is indicated, is applied.

The one in the 4th first curve shown 140-1 shows the temporal course of the speed of a drum drive 123 rotated laundry drum 107 .

The in 4th shown washing period 149 includes a maximum time period 151 and adhere to the maximum time period 151 subsequent drum period 153 .

One control 119 of the laundry care device 100 is designed to drive the drum 123 during the maximum period 151 the washing period 149 activate to the laundry drum 107 with a maximum speed 155 to rotate, with the maximum speed 155 greater than a resonance speed 157 the laundry drum 107 is.

Here is the resonance speed 157 a speed of the laundry drum 107 , at which an oscillation frequency of an oscillation system 109 of Laundry care device 100 a natural oscillation frequency of the oscillation system 109 corresponds to.

By increasing the speed of the laundry drum 107 to the maximum speed 155 which is greater than the resonance speed 157 is, it is ensured that even with large loads, the in the washing drum 107 absorbed laundry 135 to the laundry drum 107 created around an advantageously trained laundry tunnel 137 inside the laundry drum 107 to build.

Then the control is 119 formed the drum drive 123 during the drum period 153 activate to the laundry drum 107 with a drum speed 159 to rotate, with the drum speed 159 lower than the resonance speed 157 the laundry drum 107 and greater than a separation speed 161 the laundry drum 107 is to a laundry tunnel 137 inside the inside of the laundry drum 107 recorded laundry 135 to obtain.

The separation speed 161 is a maximum speed of the laundry drum 107 , in which the in the laundry drum 107 absorbed laundry 135 from the laundry drum 107 solves, so the speed of the laundry drum 107 at the one at the laundry drum 107 attached laundry 135 collapses again.

By that the drum speed 159 during the drum period 153 between the resonance speed 157 and the separation speed 161 can be held inside the laundry 135 formed laundry tunnel 137 can advantageously be maintained in order to use this advantageously for subsequent processes.

By compared to the resonance speed 157 lower drum speed 159 can according to the present disclosure in contrast to a long-term exceeding of the resonance speed 157 the energy requirement, the system load, the vibration emissions and the water absorption capacity can be advantageously adjusted according to the present disclosure. This creates a prerequisite for washing without oversaturated laundry, or without dead liquor and heating the laundry 135 by steam or warm air.

The amounts of the maximum speed 155 , the resonance speed 157 , the drum speed 159 and / or the separation speed 161 are particularly dependent on the weight of the laundry drum 107 recorded laundry 135 , the amount of washing liquid supplied and / or the type of laundry care appliance used 100 .

In particular, the maximum speed is 155 from 400 rpm to 1000 rpm, especially 500 rpm. In particular, the resonance speed is 157 from 100 rpm to 300 rpm. In particular, the drum speed is 159 less than 100 rpm. In particular, the separation speed is 161 less than 80 rpm.

5 shows a graphic representation of a laundry care process according to a second embodiment. The one in the 5 second curve shown 140-2 shows the temporal course of the speed of a drum drive 123 rotated laundry drum 107 . For the identification of the axes and the corresponding speeds, refer to the comments on the first embodiment according to 4th referenced.

As from the 5 it shows the control 119 formed the drum drive 123 during a prehistoric period 163 the washing period 149 before the maximum period 151 activate to the laundry drum 107 during the prehistoric period 163 with a pre-drum speed 165 to rotate, with the pre-drum speed 165 greater than the separation speed 161 and lower than the resonance speed 157 the laundry drum 107 is.

Then the laundry drum 107 during the maximum period 151 with the maximum speed 155 and during the drum period 153 with the drum speed 159 rotates.

The one in the 5 third curve shown 140-3 shows the through a washing liquid supply device 118-1 , in particular feed element 113 , the laundry care device 100 the laundry 135 in the laundry drum 107 supplied washing liquid, which can either be freshly supplied or driven out of the laundry at the same time. From the third corner 140-3 it can be seen that the washing liquid during the washing period 149 , especially during the prehistoric period 163 , during the maximum period 151 , and / or during the drum period 153 the laundry 135 Can be fed to the laundry 135 to wet.

During the prehistoric period 163 where the laundry drum 107 still below the resonance speed 157 only with the pre-drum speed 165 is rotated, there is still no laundry tunnel 137 in the laundry 135 formed, but the supplied washing liquid enables pre-wetting of the laundry, so that after the subsequent increase in speed during the maximum period of time 151 , or or decrease during the drum period 153 , the washing liquid into the laundry tunnel that is being formed 137 can be injected to pre-wet laundry 135 thereby more effectively and completely wetted.

The pre-drum speed can be used here 165 the drum speed 159 correspond or can correspond to the pre-drum speed 165 and the drum speed 159 be different.

6th shows a graphic representation of a laundry care process according to a third embodiment. In the 6th The third embodiment shown corresponds to that in FIG 4th illustrated first embodiment, except that in the 6th the maximum speed 155 the laundry drum 107 during the maximum period 151 is maintained constant as in the fourth curve 140-4 shown.

From the in 6th fifth curve shown 140-5 which the by a washing liquid supply device 118-1 , in particular feed element 113 , the laundry care device 100 the laundry 135 in the laundry drum 107 shows supplied washing liquid, it can also be seen that during the maximum period of time 151 and during the drum period 153 Washing liquid of the laundry 135 is fed.

7th shows a graphic representation of a laundry care process according to a fourth embodiment. In the 7th sixth curve shown 140-6 shows the time course of the speed of a laundry drum 107 during the washing period 149 , where the washing period 149 next to the maximum time period 151 one more time before the maximum period 151 extensive acquisition period 167 having.

The laundry care device 100 here has an imbalance sensor, in particular an acceleration sensor and / or position sensor, which is designed to imbalance the oscillation system 109 of the laundry care device 100 capture. As from the speed curve of the sixth curve 140-6 during the acquisition period 167 it appears is the controller 119 formed the speed of the laundry drum 107 to a minimum speed 169 to reduce if the imbalance sensor shows an imbalance in the oscillation system 109 detected. Here is the minimum speed 169 lower than the separation speed 161 .

As from the speed curve of the sixth curve 140-6 during the acquisition period 167 it appears is the controller 119 also formed the rotation of the laundry drum 107 stop when the imbalance sensor detects an imbalance in the oscillating system 109 detected. Alternatively or additionally, the controller 119 the direction of rotation when an imbalance is detected 133-1 , 133-2 the laundry drum 107 change or the washing drum 107 reverse.

As from the speed curve of the sixth curve 140-6 during the maximum period 151 it appears is the controller 119 also specifically designed the maximum speed 155 to limit when the imbalance sensor an imbalance of the oscillation system 109 detected.

Thus, by limiting the speed of the laundry drum 107 when an imbalance is detected by the imbalance sensor, an advantageous course of the laundry care process can be guaranteed.

8th shows a schematic representation of a laundry care process according to a fifth embodiment. 8th shows according to the 3rd one by the rotation of the laundry drum 107 formed laundry tunnel 137 , wherein by the washing liquid supply device 118-1 , in particular feed element 113 , Washing liquid in the laundry tunnel 137 can be injected, in this case in 8th different injection curve courses 171 are shown.

The control 119 is formed during the washing period 149 , especially during the maximum period 151 and / or during the drum period 153 , the washing liquid supply device 118-1 to be activated in order in a first operating mode washing liquid at a first flow rate into the laundry drum 107 feed, and in at least one further operating mode washing liquid with at least one further flow rate, which is greater than the first flow rate, into the laundry drum 107 feed to the point of impact of the washing liquid in the rotating laundry drum 107 formed laundry tunnel 137 to vary.

Here is the control 119 in particular designed to determine the first flow velocity in such a way that the point of impact of the washing liquid on one of the front of the laundry care device during the first operating mode 100 facing laundry drum front 107-1 of the laundry drum 107 is arranged, and is the controller 119 in particular designed to determine the at least one further flow speed in such a way that the point of impact of the washing liquid on one of the front of the laundry care device 100 facing away from the laundry drum rear side 107-2 of the laundry drum 107 is arranged.

Here is the control 119 especially designed during an interim period the first operating mode of the washing liquid supply device 118-1 to the at least one further operating mode of the washing liquid supply device 118-1 to change, especially gradually or continuously.

As from the 8th As can be seen, the first injection curve profile 171-1 results in the first operating mode, the further injection curve profile 171-2 results in a further operating mode, and thus an additional further injection curve profile 171-3 results in a further operating mode, so that the laundry tunnel 137 can be effectively moistened from front to back.

9 shows a schematic representation of a method for caring for laundry in a laundry care device.

The procedure 200 includes activation as the first process step 201 of the drum drive 123 during a maximum period of time 151 the washing period 149 through the controller 119 to the laundry drum 107 with a maximum speed 155 to rotate, with the maximum speed 155 greater than a resonance speed 157 the laundry drum 107 is, where is the resonance speed 157 a speed of the laundry drum 107 is at which an oscillation frequency of the oscillation system 109 a natural oscillation frequency of the oscillation system 109 corresponds to.

The procedure 200 comprises activation as the second process step 203 of the drum drive 123 during one of the maximum time period 151 subsequent drum period 153 the washing period 149 through the controller 119 to the laundry drum 107 with a drum speed 159 to rotate, with the drum speed 159 lower than the resonance speed 157 the laundry drum 107 and greater than a separation speed 161 the laundry drum 107 is to a laundry tunnel 137 inside the inside of the laundry drum 107 recorded laundry 135 maintain the separation speed 161 a maximum speed of the laundry drum 107 is where the in the laundry drum 107 absorbed laundry 135 from the laundry drum 107 solves.

All features explained and shown in connection with individual embodiments of the invention can be provided in different combinations in the subject matter according to the invention in order to simultaneously realize their advantageous effects.

The scope of protection of the present invention is given by the claims and is not restricted by the features explained in the description or shown in the figures.

List of reference symbols

100

Laundry care device

101

Detergent bowl

102

Device housing

103

Appliance door

105

Suds container

107

Laundry drum

109

Oscillation system

111

Drain opening

113

Feed element

115

Liquid line

117

pump

118-1

Washing liquid supply device

118-2

Further washing liquid supply device

119

control

121

First control connection

123

Drum drive

125

Second control connection

127

Third tax connection

128

Outlet pipe

129

Feed line

131

Service entry element

132

Axis of rotation

133-1

First direction of rotation

133-2

Second direction of rotation

135

Laundry

137

Laundry tunnel

139

Inflow of washing liquid

140-1

First turn

140-2

Second corner

140-3

Third corner

140-4

Fourth turn

140-5

Fifth turn

140-6

Sixth turn

141

Impact area

143

Radial wetting direction

145

Ordinate axis

147

Abscissa axis

149

Washing period

151

Maximum time period

153

Drum period

155

Maximum speed

157

Resonance speed

159

Drum speed

161

Separation speed

163

Prehistoric period

165

Pre-drum speed

167

Acquisition period

169

Minimum speed

171

Injection curve progression

200

Method of caring for laundry

201

First process step: Activate the drum drive during the maximum period of time

203

Second process step: Activate the drum drive during the drum period

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 19531656 A1 [0003]
• DE 102013104075 A1 [0004]

Claims (15)

Laundry care device (100) with a tub (105) for receiving washing liquid, a laundry drum (107) for receiving laundry, the laundry drum (107) being arranged in the tub (105), an oscillating system (109) which is designed, to swing the laundry drum (107) and the tub (105) in the laundry care device (100), a drum drive (123) for rotating the laundry drum (107) during a washing period (149), and a controller (119) for controlling the drum drive (123), characterized in that the controller (119) is designed to activate the drum drive (123) during a maximum time segment (151) of the washing period (149) in order to rotate the laundry drum (107) at a maximum speed (155), wherein the maximum speed (155) is greater than a resonance speed (157) of the laundry drum (107), wherein the resonance speed (157) is a speed of the laundry drum (107) at which an oscillation frequency of the oscillation systems (109) corresponds to a natural oscillation frequency of the oscillation system (109) that the control (119) is designed to activate the drum drive (123) during a drum time segment (153) of the washing period (149) following the maximum time segment (151) in order to to rotate the laundry drum (107) at a drum speed (159), wherein the drum speed (159) is less than the resonance speed (157) of the laundry drum (107) and greater than a detachment speed (161) of the laundry drum (107), around a laundry tunnel (137) within the laundry (135) received in the laundry drum (107) and to be maintained, the detachment speed (161) being a maximum speed of the laundry drum (107) at which the laundry (107) received in the laundry drum (107) is 135) from the laundry drum (107). Laundry care device (100) according to Claim 1 , characterized in that the laundry care device (100) has a weight sensor which is designed to detect a weight of laundry (135) received in the laundry drum (107), and in that the controller (119) is designed to drive the drum (123) activate during the maximum time segment (151) to rotate the laundry drum (107) at the maximum speed (155) when the weight of the laundry (135) detected by the weight sensor exceeds a weight threshold value, the weight threshold value in particular being half the maximum laundry load of the Laundry drum (107) corresponds. Laundry care device (100) according to Claim 1 or 2 , characterized in that the controller (119) is designed to activate the drum drive (123) during a pre-time segment (163) before the maximum time segment (151) in order to rotate the laundry drum (107) at a pre-drum speed (165), the The pre-drum speed (165) is greater than the detachment speed (161) and lower than the resonance speed (157) of the laundry drum (107), and in particular the control (119) is designed to provide a washing liquid supply device (118-1, 118-2) of the laundry care device (100) to feed washing liquid into the rotating laundry drum (107) and to pre-wet the laundry (135) in the laundry drum (107). Laundry care device (100) according to Claim 3 , characterized in that the control (119) is designed to end the pre-time section (163) when a level sensor arranged in the tub (105) detects a level of washing liquid which falls below a level threshold value, and / or that the control (119 ) is designed to end the early period (163) when a power detection element (131) which is designed to detect an electrical power value of a pump (117) of a washing liquid supply device (118-1, 118-2) of the laundry care device (100) has an electrical output The power value of the pump (117) is detected which falls below an electrical reference power value. Laundry care device (100) according to one of the preceding claims, characterized in that the laundry care device (100) has an imbalance sensor, in particular an acceleration sensor and / or position sensor, which is designed to detect an imbalance of the oscillating system (109), the controller (119 ) is designed to reduce the speed of the laundry drum (107) to a minimum speed (169) during a detection time segment (167) of the washing period (149) when the imbalance sensor detects an imbalance of the oscillating system (109), the minimum speed (169) in particular is less than the separation speed (161). Laundry care device (100) according to Claim 5 , characterized in that the controller (119) is designed to stop the rotation of the laundry drum (107) during the detection time segment (167) and / or to apply a direction of rotation (133-1, 133-2) to the rotating laundry drum (107) change when the imbalance sensor detects an imbalance in the oscillating system (109). Laundry care device (100) according to Claim 5 or 6th , characterized in that the controller (119) is designed to increase the maximum speed (155) during the maximum time segment (151) limit when the imbalance sensor detects an imbalance of the oscillating system (109) during a detection time segment (167) before the maximum time segment (151). Laundry care device (100) according to one of the preceding claims, characterized in that the controller (119) is designed to activate the drum drive (123) in order to maintain the maximum speed (155) constant during the maximum time segment (151). Laundry care device (100) according to one of the preceding claims, characterized in that the laundry care device (100) has a washing liquid supply device (118-1, 118-2) for supplying washing liquid into the laundry drum (107), and that the control (119) is designed is, the washing liquid supply device (118-1, 118-2) during the washing period (149), in particular during the previous period (163), and / or during the maximum period (151), and / or during the detection period (167), and / or during the drum period (153) to be activated in order to supply washing liquid into the laundry tunnel (137) formed within the laundry drum (107). Laundry care device (100) according to Claim 9 , characterized in that the controller (119) is designed to activate the washing liquid supply device (118-1, 118-2) in a first operating mode in order to supply washing liquid at a first flow rate into the laundry drum (107), and that the controller ( 119) is designed to activate the washing liquid feed device (118-1, 118-2) in at least one further operating mode in order to feed washing liquid into the laundry drum (107) at a further flow rate, which is greater than the first flow rate, at the point of impact to vary the washing liquid in the laundry tunnel (137) formed in the rotating laundry drum (107). Laundry care device (100) according to Claim 10 , characterized in that the controller (119) is designed to determine the first flow speed in such a way that the point of impact of the washing liquid is arranged during the first operating mode on a front side of the washing drum (107) facing the front of the laundry care device (100), and / or that the control (119) is designed to determine the further flow speed in such a way that the point of impact of the washing liquid is arranged on the rear of the laundry drum (107) facing away from the front of the laundry care appliance (100). Laundry care device (100) according to Claim 10 or 11 , characterized in that the controller (119) is designed to change the operating mode of the washing liquid supply device (118-1, 118-2) between the first operating mode and the at least one further operating mode, in particular to change it in stages or continuously. A method (200) for caring for laundry (135) in a laundry care device (100), wherein the laundry care device (100) has a tub (105) for receiving washing liquid, a laundry drum (107) for receiving laundry, the laundry drum (107) is arranged in the tub (105), an oscillating system (109) which is designed to swing the laundry drum (107) and the tub (105) in the laundry care device (100), a drum drive (123) for rotating the laundry drum ( 107) during a washing period (149), and a controller (119) for controlling the drum drive (123), characterized in that the method (200) has the following method steps: activating (201) the drum drive (123) during a maximum period of time (151) of the washing period (149) by the controller (119) 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) being 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), and activation (203) of the drum drive (123) during a drum time segment (153) of the washing period (149) following the maximum time segment (151) by the controller (119) to rotate the laundry drum (107) at a drum speed (159), the drum speed (159) being lower than the Resonance speed (157) of the laundry drum (107) and greater than a detachment speed (161) of the laundry drum (107) in order to form and maintain a laundry tunnel (137) within the laundry (135) received in the laundry drum (107), the Detachment speed (161) is a minimum speed of rotation of the laundry drum (107) at which the laundry (135) received in the laundry drum (107) is released from the laundry drum (107). Method (200) according to Claim 13 , characterized in that the laundry care device (100) has an imbalance sensor, in particular an acceleration sensor and / or position sensor, which is designed to detect an imbalance of the oscillating system (109), the method (200) further comprising the following step: reducing the speed the laundry drum (107) to a minimum speed (169) during a detection time segment (167) of the washing period (149) by the controller (119) when the imbalance sensor detects an imbalance in the oscillating system (109), the minimum speed (169) in particular being lower than the separation speed (161) is. Method (200) according to Claim 13 or 14th , characterized in that the laundry care device (100) has a washing liquid supply device (118-1, 118-2) for supplying washing liquid into the laundry drum (107), and that the activation (201) of the drum drive (123) during the maximum time segment (151 ) of the washing time period (149) and / or that the activation (203) of the drum drive (123) during the drum time segment (153) of the washing time period (149) further comprises activating the washing liquid supply device (118-1, 118-2) in order to supply washing liquid to feed the laundry tunnel (137) formed within the laundry drum (107).

Images