DE102019213014A1 - Laundry care device with one control - Google Patents

Abstract

The present invention relates to a method 200 for caring for laundry 135, a laundry care device 100 set up to carry out the method, with a tub 105, a laundry drum 107, the laundry drum 107 being 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, a supply device 118-1, 118-2 for supplying washing liquid into the laundry drum 107 during a washing period 149, and a controller 119 for controlling the drum drive 123 and the washing liquid supply device 118-1, 118-2. The controller 119 is designed to activate the drum drive 123 during a drum time segment 153 of the washing period 149 in order to rotate the laundry drum 107 at a drum speed 159 in order to form a laundry tunnel 137 within the laundry 135 received in the laundry drum 107, being the drum speed 159 is greater than a detachment speed 161 of the laundry drum 107 and lower than a resonance speed 157 of the laundry drum 107. The controller 119 is designed to activate the feed device 118-1, 118-2 during the washing period 149 to wash liquid in the inside of the laundry drum 107 to feed laundry tunnel 137 formed.

Description

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

In a conventional laundry care device, different methods are used for wetting the laundry received in the laundry drum. Among other things, the rotating laundry drum is immersed in washing liquid, which is received in the tub of the laundry care device, in order to enable the laundry to be wetted. In conventional laundry care devices, however, it may not be possible to ensure that the laundry is completely wetted, since the washing liquid contained in the tub cannot penetrate into the inner area of the laundry received in the laundry drum and thus cannot completely wet it.

In the DE 196 413 09 B4 a drum washing machine is disclosed.

In the DE 10 2014 104 962 A1 a water supply control and a fully automatic washing machine are disclosed.

The object on which the invention is based is to provide a laundry care device in which complete wetting of the laundry received in the laundry drum is ensured 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 swing the laundry care device, a drum drive for rotating the laundry drum, a washing liquid supply device for supplying washing liquid into the laundry drum during a washing period, and a controller for controlling the drum drive and the washing liquid supply device, the controller being designed to drive the drum during a drum period of the washing period to be activated to rotate the laundry drum at a drum speed in order to form a laundry tunnel within the laundry received in the laundry drum, the drum speed being greater than a detachment speed ahl of the laundry drum and less than a resonance speed of the laundry drum, the detachment speed being a maximum speed of the laundry drum at which the laundry received in the laundry drum is released from 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 the controller is designed to activate the washing liquid supply device during the washing period, in particular during the drum period, in order to supply washing liquid into the laundry tunnel formed within the laundry drum.

This achieves the technical advantage that by rotating the laundry drum at the drum speed during the drum period, a laundry tunnel is formed within the laundry received in the laundry drum, into which washing liquid can be supplied by the washing liquid supply device. The supplied washing liquid meets the laundry in the laundry tunnel and is driven radially through the laundry from the laundry tunnel by the centrifugal force acting on the washing liquid due to the rotation of the laundry drum, so that there is complete and effective wetting of all the laundry received in the laundry drum .

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. 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.

Particularly with low laundry loads, rotating the laundry drum at the drum speed, which is lower than the resonance speed and greater than the detachment speed, is sufficient to ensure that the laundry is fully applied to the laundry drum and to form a laundry tunnel.

Because the drum speed is greater than the separation speed, it is prevented that loosens the laundry from the washing drum and collapses again. Since the detachment speed is the maximum speed of the laundry drum at which the laundry is released from the laundry drum, the fact that the drum speed exceeds the detachment speed ensures that the laundry rests against the drum due to the centrifugal force acting on it.

The fact that the drum speed is lower than the resonance speed ensures 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. In addition, because the drum speed is lower than the resonance speed, the vibrations of the laundry care device can be reduced, since resonant rocking of the laundry drum or the tub is prevented by the swinging mounting at the resonance speed, and the energy consumption of the laundry care device can also be reduced .

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 control is designed to activate the drum drive during a maximum time segment of the washing period before the drum time segment in order to rotate the laundry drum at a maximum speed, the maximum speed being greater than the resonance speed, the control being designed in particular to operate the washing liquid supply device during of the maximum period of time to supply washing liquid to the laundry received in the laundry drum.

This achieves the technical advantage that by rotating the laundry drum at the maximum speed during the maximum period of time, which precedes the drum period of time, it can be ensured that even with large loads of laundry, the laundry received in the laundry drum is completely in contact with the laundry drum, so that in which the drum time segment following the maximum time segment, the laundry tunnel can advantageously be maintained.

If the washing liquid supply device supplies washing liquid in particular to the laundry during the maximum time segment, effective wetting of the laundry can be ensured during the formation of the laundry tunnel during the maximum time segment and also during the subsequent drum segment.

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, the controller being designed to activate the drum drive during the maximum period of time in order to rotate the laundry drum at a maximum speed when the weight of the laundry detected by the weight sensor exceeds a weight threshold value, and / or the controller is designed to activate the drum drive directly during the drum time segment, in particular without previously activating the drum drive during the maximum time segment in order to rotate the laundry drum at a drum speed, when the weight detected by the weight sensor falls below a weight threshold value, the weight threshold value in particular corresponding to half of the maximum laundry load of the laundry drum.

This achieves the technical advantage that by detecting the weight with the weight sensor, a control of the speed of the rotating laundry drum dependent on the amount of load can be ensured in order to enable an effective formation of a laundry tunnel.

In the case of a large laundry load, especially if the weight of the laundry is greater than half the maximum laundry load of the laundry drum, a laundry tunnel often only forms when the laundry drum is rotated at a maximum speed that is greater than the resonance speed. Thus, when the weight of the laundry detected by the weight sensor exceeds the weight threshold value, the control first carries out the maximum time segment before the speed of the laundry drum can then be reduced to the drum speed during the drum time segment in order to maintain the laundry tunnel.

With a low laundry load, in particular if the weight of the laundry is less than half of the maximum laundry load of the laundry drum, a laundry tunnel is already formed with a rotation of the laundry drum with the drum speed, which is lower than the resonance speed, so that the implementation of the maximum time segment can be dispensed with, vibrations can be reduced and energy can be saved.

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 controller is designed to activate the drum drive during a pre-time segment of the washing period before the drum time segment, in particular 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 separation speed and lower than the resonance speed of the Is laundry drum, and wherein the control is designed in particular to activate the washing liquid supply device during the pre-time section in order to supply washing liquid into the rotating washing drum and prewetting the laundry in the washing drum.

This achieves the technical advantage that, especially with large loads of laundry, by rotating the laundry drum at the pre-drum speed and by supplying washing liquid through the washing liquid supply device, an advantageous pre-wetting of the laundry takes place, so that the pre-wetted washing is then carried out during the maximum period of time increased weight of the laundry makes a laundry tunnel easier. In particular, the pre-drum speed corresponds to the drum speed or if the pre-drum speed differs from the drum speed.

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 the washing liquid supply device of the laundry care device, an electrical power value of the pump that is 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 controller, it can be effectively detected when the fill level in the tub is too low, so that a continuation of the Pre-time period no longer makes sense. In particular, the control system is designed to end the pre-time segment when an imbalance of the oscillating system detected by an imbalance sensor of the laundry care device does not change any further.

In particular, the control is designed to stop the rotation of the laundry drum during the pre-time section and / or to change a direction of rotation of the rotating laundry drum in order to redistribute the laundry in the washing drum during the pre-time section, so that, for example, items of laundry that have not yet been wetted, be moved into a front area of the laundry drum, so that this can then also be wetted when the pre-time period is continued.

In an advantageous embodiment, the laundry care device has an imbalance sensor, in particular an acceleration sensor or position sensor, which is designed to detect an imbalance in the oscillation system, the controller being designed to end the early period when the imbalance sensor detects an imbalance in the oscillation system.

This has the technical advantage that an uneven distribution of the laundry due to the imbalance of the laundry can indicate an end of the pre-time period for the control.

The unbalance sensor is in particular an acceleration sensor that detects the acceleration of the oscillating system in all three spatial directions, or the unbalance sensor is in particular a position sensor that detects the displacement of the oscillating system in all three spatial directions, the respective accelerations or the displacement in the three spatial directions can be compared with corresponding reference values in order to detect an imbalance in the oscillating system.

In an advantageous embodiment, the control is designed to activate the drum drive during at least one further drum time segment of the washing time period following the drum time segment in order to rotate the laundry drum at a further drum speed to rotate, wherein the further drum speed is lower than the resonance speed of the laundry drum, and that the control is designed in particular to activate the washing liquid supply device during the at least one further drum period in order to supply washing liquid into the rotating laundry drum.

This achieves the technical advantage that during the at least one further drum period by rotating the laundry drum at the further drum speed, the laundry tunnel within the laundry can advantageously be maintained, so that further washing liquid can be supplied in order to advantageously wet the laundry. In particular, the at least one further drum time segment comprises a plurality of drum time segments, so that washing liquid can be supplied to the laundry during a plurality of further filling steps.

In particular, the control is designed to activate the drum drive between the drum period and the at least one further drum period and / or between successive further drum periods in order to reduce the drum speed and / or the further drum speed, in particular to reduce it to 0 rpm.

In an advantageous embodiment, the further drum speed is lower than the resonance speed and lower than the detachment speed of the laundry drum, or the further drum speed is lower than the resonance speed and greater than the detachment speed of the laundry drum.

This has the technical advantage that, for example, depending on the laundry load, the degree of wetting of the laundry, and / or the laundry care program selected by the user, the amount of the further drum speed can advantageously be selected.

In an advantageous embodiment, the controller is designed to activate the drum drive during a further maximum time segment following the at least one further drum time segment in order to rotate the laundry drum at a further maximum speed, the further maximum speed being greater than the resonance speed.

This achieves the technical advantage that, after a certain number of further filling steps during the at least one further drum period, it can be advantageous to compress the laundry received in the laundry drum again by rotating the laundry drum at the further maximum speed in order to remove the washing liquid from the To drive out laundry, and to distribute the expelled washing liquid back into the laundry. In addition, a laundry tunnel that may have collapsed can be formed again.

In particular, the control can determine an initial amount of washing liquid as a function of a load of laundry in the laundry care appliance, as a function of a type of fabric of the laundry and / or as a function of a program selection of the laundry care appliance, the initial amount of washing liquid being determined by the washing liquid supply device before the drum period , especially before the premature period of the laundry is supplied. As a result, the number of subsequent filling steps can be reduced, which leads to a shorter program duration and possibly to a lower number of resonance passes.

In an advantageous embodiment, the controller is designed to activate the drum drive during a deceleration period following the drum period in order to rotate the laundry drum at a deceleration speed, the deceleration speed being lower than the drum speed and greater than the separation speed, the control being implemented to activate the washing liquid supply device at least once during the braking period in order to supply washing liquid to the laundry in the laundry drum at least once.

This has the technical advantage that, by braking the speed of the laundry drum from the drum speed during the drum period to the braking speed during the subsequent deceleration period, the laundry tunnel over a longer period of time in which washing liquid is repeatedly fed to the laundry and / or pumped around by a pumping system can be maintained, whereby each individual filling step can be carried out with less expenditure of time and thus the entire program duration can be reduced.

In an advantageous embodiment, the control is designed to measure the number of activations of the washing liquid supply device and / or the amount of washing liquid supplied during the deceleration time period as a function of a weight of the laundry received in the laundry drum and / or as a function of a weight sensor of the laundry care device laundry care program selected by a user of the laundry care device, and / or depending on a type of fabric of the laundry determined by a textile detection device, and / or depending on a type of laundry determined by a device for Determination of the saturation of the laundry determined saturation of the laundry with washing liquid, to be determined.

This achieves the technical advantage that an advantageous number of filling steps can be carried out during the deceleration time segment, the laundry drum rotating below the resonance frequency speed.

In an advantageous embodiment, the controller is designed to interrupt the deceleration period during an intermediate period in order to activate the drum drive to rotate the laundry drum at the drum speed in order to re-form a laundry tunnel within the laundry received in the laundry drum, and / or is the controller designed to interrupt the braking period during an intermediate period in order to activate the drum drive in order to rotate the laundry drum at a further maximum speed.

This achieves the technical advantage that by interrupting the deceleration time segment it is possible for a laundry tunnel to be built up again within the laundry by rotating the laundry at the drum speed if it has collapsed.

In an advantageous embodiment, 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, the controller being designed to activate the pump during the washing period in order to add washing liquid to the laundry to feed the laundry drum.

This achieves the technical advantage that, by activating the pump by the control, the washing liquid supply device for supplying the washing liquid into the laundry accommodated in the washing drum can advantageously be activated. In particular, the washing liquid supply device comprises a supply element, in particular an injection nozzle, through which the pumped washing liquid can advantageously be injected in a directed manner into the laundry drum, in particular into a laundry tunnel formed in the laundry drum.

In an advantageous embodiment, a further washing liquid supply device, in particular fresh water supply device, is connected to the tub by a supply line, the control being designed to activate the further washing liquid supply device during the washing period in order to supply washing liquid, in particular fresh water, to the tub.

This has the technical advantage that by activating the further washing liquid supply device, in particular fresh water supply device, the control can ensure that a sufficient amount of washing liquid is present in the tub to ensure effective wetting of the laundry during the washing period.

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, a drum drive for rotating the laundry drum, a washing liquid supply device for supplying washing liquid into the laundry drum during a washing period, and a controller for controlling the drum drive and the washing liquid supply device, wherein the method comprises the following method steps, activating the drum drive during a drum time segment of the washing period by the controller in order to rotate the laundry drum at a drum speed to inside a laundry tunnel half of the laundry received in the laundry drum, the drum speed being greater than a detachment speed of the laundry drum and less than a resonance speed of the laundry drum, the detachment speed being a maximum speed of the laundry drum at which the laundry received in the laundry drum is removed from the laundry drum solves, and wherein the resonance speed is 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 activating the washing liquid supply device during the washing period by the control to supply washing liquid into the laundry tunnel formed within the washing drum.

This has the technical advantage that effective wetting of the laundry is ensured. In particular, the method according to the second aspect is carried out with low loading quantities. In the case of large loads, the method comprises activating the drum drive during a maximum time segment of the washing time period before the drum time segment by the controller in order to rotate the laundry drum at a maximum speed, the maximum speed being the maximum speed is greater than the resonance speed. The laundry tunnel can thus be set up during the maximum period of time and maintained during the subsequent drum period.

The embodiments 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.

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;
• 5a-5c graphische Darstellungen eines Wäschepflegevorgangs gemäß einer zweiten, dritten, bzw. vierten Ausführungsform;
• 6 eine graphische Darstellung eines Wäschepflegevorgangs gemäß einer fünften Ausführungsform;
• 7 eine graphische Darstellung eines Wäschepflegevorgangs gemäß einer sechsten Ausführungsform;
• 8 eine schematische Darstellung eines Wäschepflegevorgangs gemäß einer siebten 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;
• 5a-5c graphical representations of a laundry care process according to a second, third or fourth embodiment;
• 6th a graphic representation of a laundry care process according to a fifth embodiment;
• 7th a graphic representation of a laundry care process according to a sixth embodiment;
• 8th a schematic representation of a laundry care process according to a seventh 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 one in the tub 105 arranged laundry drum 107 to pick up laundry. 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 at an in 2 device housing shown only schematically 102 of 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 and the pumped out 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.

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 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 in order to put washing liquor and / or fresh water as washing liquid into 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 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.

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 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 and one through the washing liquid supply means 118-1 the laundry drum 107 supplied amount of washing liquid, which along the ordinate axis 145 as a function of time, which is along the abscissa axis 147 is indicated, are plotted.

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 . Like from the first corner 140-1 can be seen is the control 119 formed the drum drive 123 during a drum period 153 the washing period 149 activate to the laundry drum 107 with a drum speed 159 to rotate, with the drum speed 159 greater than a separation speed 161 the laundry drum 107 and where the drum speed 159 less than a resonance speed 157 the laundry drum 107 is.

Here is the separation speed 161 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. Here is the resonance speed 157 a speed of the laundry drum 107 at which an oscillation frequency of the oscillation system 109 a natural oscillation frequency of the oscillation system 109 corresponds to.

By that the drum speed 159 greater than the separation speed 161 is where the laundry is 135 from the laundry drum 107 is released by rotating the laundry drum 107 with the drum speed 159 made sure the ones in the laundry drum 107 absorbed laundry 135 on the laundry drum 107 is applied.

By that the drum speed 159 lower than the resonance speed 157 is when the washing drum rotates 107 with the drum speed 159 pressing too much on the laundry 135 to the laundry drum 107 avoided, so that a more advantageous laundry tunnel 137 in the laundry 135 forms or can vibrate in the laundry care device 100 can be prevented, which occur when the speed of the laundry drum 107 the resonance speed 157 reached.

In the 4th The second curve 140-2 shown shows the time profile of a through the washing liquid supply device 118-1 the laundry drum 107 supplied amount of washing liquid.

As can be seen from the second curve 140-2, the control is 119 formed, the washing liquid supply device 118-1 during the washing period 149 to activate to wash liquid into the rotating laundry drum 107 to feed.

By supplying the washing liquid when the washing drum rotates 107 with the drum speed 159 the reduced speed ensures that the washing liquid gets through to the laundry 135 acting centrifugal force is not driven out again too quickly and can thereby advantageously wet the laundry.

Here is the supply of the washing liquid during the drum period 153 possible in particular with a laundry load which is less than half the maximum laundry load of the laundry drum 107 is, because with such a small laundry load already when rotating the laundry drum 107 with the drum speed 159 a laundry tunnel 137 trains, which for an effective wetting of the laundry 135 is sufficient.

The 5a , 5b and 5c show graphic representations of a laundry care process according to a second, third or fourth embodiment.

In the in 5a The second embodiment shown comprises the washing period 149 next to the drum period 153 before that, a maximum period of time 151 . The control 119 of the laundry care device 100 is designed to drive the drum 123 during the maximum period 151 activate to the laundry drum 107 with a maximum speed 155 to rotate, with the maximum speed 155 greater than the resonance speed 157 the laundry drum 107 is.

This is particularly advantageous in the case of laundry loads that weigh more than half the maximum laundry load of the laundry drum 107 have because of the rotation of the laundry drum 107 with the maximum speed 155 which is greater than the resonance speed 157 is to ensure that there is an adequate laundry tunnel 137 has formed before then the drum period 153 is started.

As in the first in the 1 The illustrated embodiment is disclosed, is during the at the maximum time period 151 subsequent drum period 153 the speed of the laundry drum 107 on the drum speed 159 is reduced and washing liquid is supplied through the washing liquid supply device 118-1 into the laundry tunnel formed 137 fed to the laundry 135 advantageous to wet.

In the 5b The third embodiment shown corresponds to that in FIG 5a illustrated second embodiment except that the washing period 149 next to the drum period 153 and the maximum time period 151 before that, a period of time before 163 having.

During the prehistoric period 163 activates the control 119 the drum drive 123 to the laundry drum 107 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.

The fifth curve 140-5 shows that the washing liquid supply device 118-1 already during the prehistoric period 163 Washing liquid of the laundry 135 in the laundry drum 107 adds to an effective pre-wetting of the laundry 135 ensure and that the washing liquid supply device 118-1 also during the maximum period 151 and the drum period 153 Washing liquid of the laundry 135 feeds.

In the 5c The fourth embodiment shown shows a sixth curve 140-6 , which is a speed of rotation of a laundry drum 107 during the washing period 149 shows 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.

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 or the rotation of the washing drum 107 to stop completely, or one direction of rotation 133-1 , 133-2 the laundry drum 107 to change. Here is the minimum speed 169 especially lower than the separation speed 161 .

Thus, by limiting the speed of the laundry drum 107 an advantageous one Mixing the laundry 135 during the laundry care process guaranteed to the laundry 135 for example during the prehistoric period 163 in the laundry drum 107 redistribute, so that, for example, items of laundry that have not yet been wetted in a front area of the laundry drum 107 be moved, so that this continues when the prehistoric period 163 can then also be wetted.

6th shows a graphic representation of a laundry care process according to a fifth embodiment. In the in the graphic representation a) the 6th seventh curve shown 140-7 is the temporal course of the speed of the laundry drum 107 during the washing period 149 shown. In the graphic representation b) the 6th eighth curve shown 140-8 is the time course of the by a further washing liquid supply device 118-2 the suds container 105 supplied washing liquid, in particular fresh water, shown. In the graphic representation c) the 6th ninth curve shown 140-9 is the time course of the by the washing liquid supply device 118-1 into the laundry drum 107 supplied washing liquid shown.

As shown in illustration a) of the 6th indicates the washing period 149 a prehistoric period 163 while the laundry drum 107 with a pre-drum speed 165 is rotated, indicates the washing period 149 one to the prehistoric period 163 subsequent maximum period of time 151 while the laundry drum 107 with a maximum speed 155 is rotated and indicates the washing period 149 adhere to the maximum time period 151 subsequent drum period 153 while the laundry drum 107 with a drum speed 159 is rotated.

As shown in illustration b) the 6th emerges, is through the further washing liquid supply device 118-2 the suds container 105 Washing liquid, in particular fresh water, is supplied, and as shown in illustration c) of the 6th is shown by the washing liquid supply device 118-1 The washing liquid in the washing drum 107 formed laundry tunnel 137 fed so that an even wetting of the laundry 135 takes place.

As from the 6th emerges, follows the drum period 153 a plurality of further drum time periods 153-2 during which the laundry drum 107 with a further drum speed 159-2 is rotated, which is lower than the resonance speed 157 the laundry drum 107 is. As the laundry 135 after the end of the drum period 153 is so highly compressed, as in illustration b) and c) of the 6th is shown, further filling steps of washing liquid by the washing liquid supply device 118-1 and / or by the further washing liquid supply device 118-2 can be supplied without changing the speed of the laundry drum 107 to have to increase.

The further drum speed can be used here 159-2 especially lower than the resonance speed 157 and greater than the separation speed 161 and / or the further drum speed 159-2 especially lower than the resonance speed 157 and lower than the separation speed 161 be.

As from the 6th it follows from the other drum periods 153-2 another maximum time period 151-2 during which the laundry drum 107 with a further maximum speed 155-2 is rotated to the laundry 135 to compress again and the washing liquid released as a result in a subsequent further drum period 153-2 back in the wash 135 to distribute.

In particular, by the controller 119 an initial amount of washing liquid as a function of a load amount of laundry 135 in the laundry care device 100 , depending on a type of laundry 135 and / or as a function of a program selection of the laundry care device 100 can be determined, the initial amount of washing liquid by the washing liquid supply device 118-1 already before the drum period 153 , especially before the prehistoric period 163 the laundry 135 is fed. As a result, the number of subsequent filling steps can be reduced, which leads to a shorter program duration and possibly to a lower number of resonance passes.

7th shows a graphic representation of a laundry care process according to a sixth embodiment. The washing period 149 has a prehistoric period 163 , a maximum period of time 151 and a drum period 153 on, during which the washing liquid supply devices 118-1 , 118-2 Washing liquid of the laundry 135 in the laundry drum 107 respectively. This is done during a drum period 153 subsequent deceleration period 171 the speed of the laundry drum 107 to a deceleration speed 173 reduced which is lower than the drum speed 159 but greater than the separation speed 161 is so the laundry 135 continues to be held in an annular motion, but not completely collapsing, while through the washing liquid supply means 118-1 , 118-2 washing liquid of the laundry 135 in the laundry drum 107 is fed.

Here is the control 119 in particular, the supply amount of the amount of washing liquid supplied during the filling steps is designed as a function of the dry load amount, the program option selected by the user, and / or one by the laundry care device 100 to determine a certain type of textile. This has the advantage that a given number of filling steps can be carried out more quickly, which has an advantageous effect on the program duration when the laundry drum 107 permanently at the braking speed 173 and does not have to be braked to zero before each filling step according to the in 6th illustrated embodiment. Thus, the laundry tunnel 137 be held longer, so that rebuilding has to be done less frequently. When building up again, further resonance passages can occur at the maximum speed 155 become necessary and there is a risk of foam formation at higher speeds. Thus, the advantage is that the number of further filling steps can be reduced and the respective amount of washing liquid supplied can be adapted to the circumstances mentioned.

8th shows a graphic representation of a laundry care process according to a seventh embodiment. According to the in 7th illustrated sixth embodiment is after the drum period 153 and forming the laundry tunnel 137 in the laundry drum 107 during the deceleration period 171 a plurality of filling steps for supplying washing liquid into the laundry tunnel 137 performed by the washing liquid supply device 118-1 it is ensured that the washing liquid is each from the laundry 135 is fully recorded.

In particular, the controller 119 formed, the deceleration period 171 during an interim period 175 interrupt to the drum drive 123 activate to the laundry drum 107 with a further maximum speed 155-2 to rotate. This can be particularly advantageous to ensure that the laundry tunnel is open 137 trains again.

9 shows a schematic representation of a method for caring for laundry 135 in a laundry care device.

The procedure 200 comprises the activation of the drum drive as the first process step 123 during a drum period 153 the washing period 149 through the controller 119 to the laundry drum 107 with a drum speed 159 to rotate to a laundry tunnel 137 inside the inside of the laundry drum 107 recorded laundry 135 to form, the drum speed 159 greater than a separation speed 161 the laundry drum 107 and less than a resonance speed 157 the laundry drum 107 is, where 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, and being 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, as a second method step, activating the washing liquid supply device 118-1 , 118-2 during the washing period 149 through the controller 119 to get washing liquid into the inside of the laundry drum 107 formed laundry tunnel 137 to feed.

In summary, it can be stated that even large laundry loads of more than half of the maximum laundry load of the laundry drum 107 can be wetted quickly and completely. This will allow washing without oversaturated laundry 135 or without dead liquor, which enables a significant increase in the energy efficiency of the washing machine. Thanks to the separation of laundry tunnel formation in the upstream process step and the subsequent water supply at a drum speed 159 which is lower than the resonance speed 157 is, the washing liquid can be taken up particularly quickly and without simultaneous re-release.

In contrast to long-term exceeding of the resonance, the supply of washing liquid at a lower speed has an advantageous effect on the energy requirement, the system load, the vibration emission and the water absorption behavior.

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-n

Respective curve

141

Impact area

143

Radial wetting direction

145

Ordinate axis

147

Abscissa axis

149

Washing period

151

Maximum time period

151-2

Another maximum period

153

Drum period

153-2

Another drum period

155

Maximum speed

155-2

Further maximum speed

157

Resonance speed

159

Drum speed

159-2

Further drum speed

161

Separation speed

163

Prehistoric period

165

Pre-drum speed

167

Acquisition period

169

Minimum speed

171

Deceleration period

173

Deceleration speed

175

Intermediate period

200

Method of caring for laundry

201

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

203

Second process step: activating the washing liquid supply device

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 19641309 B4 [0003]
• DE 102014104962 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), a washing liquid supply device (118-1, 118-2) for supplying washing liquid in the laundry drum (107) during a washing period (149), and a control (119) for controlling the drum drive (123) and the washing liquid supply device (118-1, 118-2), characterized in that the control (119) is designed, to activate the drum drive (123) during a drum time segment (153) of the washing period (149) in order to rotate the laundry drum (107) at a drum speed (159) in order to create a laundry tunnel (137) within de r laundry (135) received in the laundry drum (107), the drum speed (159) being greater than a detachment speed (161) of the laundry drum (107) and less than a resonance speed (157) of the laundry drum (107), the Detachment speed (161) is a maximum speed of the laundry drum (107) at which the laundry (135) received in the laundry drum (107) is released from the laundry drum (107), and 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), and that the controller (119) is designed to activate the washing liquid supply device (118-1, 118-2) during the washing period (149) to supply washing liquid into the laundry tunnel (137) formed inside the laundry drum (107). Laundry care device (100) according to Claim 1 , 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) before the drum time segment (153) in order to activate the laundry drum (107) at a maximum speed (155) to rotate, the maximum speed (155) being greater than the resonance speed (157), the controller (119) being designed in particular to activate the washing liquid supply device (118-1, 118-2) during the maximum time segment (1551) in order to activate washing liquid the laundry (135) received in the laundry drum (107). Laundry care device (100) according to Claim 1 or 2 , 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), the controller (119) being designed to operate the drum drive (123) during of the maximum time segment (151) to rotate the laundry drum (107) at a maximum speed (155) when the weight of the laundry (135) detected by the weight sensor exceeds a weight threshold value, and / or the controller (119) is implemented to activate the drum drive (123) directly during the drum time segment (153), in particular without first activating the drum drive (123) during the maximum time segment (151) in order to rotate the laundry drum (107) at a drum speed (159), if the The weight detected by the weight sensor falls below a weight threshold value, the weight threshold value being in particular half of the maximum laundry load d he corresponds to the laundry drum (107). Laundry care device (100) according to one of the preceding claims, characterized in that the control (119) is designed to operate the drum drive (123) during a pre-time segment (163) of the washing period (149) before the drum time segment (153), in particular before the maximum time segment ( 151) to be activated to rotate the laundry drum (107) at a pre-drum speed (165), the pre-drum speed (165) being greater than the detachment speed (161) and less than the resonance speed (157) of the laundry drum (107), and wherein the control (119) is designed in particular to activate the washing liquid supply device (118-1, 118-2) during the pre-time section (163) in order to supply washing liquid into the rotating laundry drum (107) and the laundry (135) in the laundry drum ( 107) must be pre-wetted. Laundry care device (100) according to Claim 4 , 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 the washing liquid supply device (118-1, 118-2) of the laundry care device (100), a electrical power value of the pump (117) detected, which falls below an electrical reference power value. Laundry care device (100) according to Claim 4 or 5 , characterized in that the laundry care device (100) has an imbalance sensor, in particular an acceleration sensor or position sensor, which is designed to detect an imbalance of the oscillating system (109), the controller (119) being designed to end the early period (163) when the imbalance sensor detects an imbalance of the oscillating system (109) during the pre-time segment (163). Laundry care device (100) according to one of the preceding claims, characterized in that the control (119) is designed to operate the drum drive (123) during at least one further drum time segment (153-2) of the washing period (149) following the drum time segment (153). to be activated in order to rotate the laundry drum (107) at a further drum speed (159-2), the further drum speed (159-2) being lower than the resonance speed (157) of the laundry drum (107), and that the controller (119 ) is designed in particular to activate the washing liquid supply device (118-1, 118-2) during the at least one further drum time segment (153-2) in order to supply washing liquid into the rotating laundry drum (107). Laundry care device (100) according to Claim 7 , characterized in that the further drum speed (159-2) is lower than the resonance speed (157) and lower than the detachment speed (161) of the laundry drum (107), or that the further drum speed (159-2) is lower than the resonance speed ( 157) and greater than the detachment speed (161) of the laundry drum (107). Laundry care device (100) according to Claim 7 or 8th , characterized in that the controller (119) is designed to activate the drum drive (123) during a further maximum time segment (151-2) following the at least one further drum time segment (153-2) in order to also activate the laundry drum (107) to rotate a further maximum speed (155-2), the further maximum speed (155-2) being greater than the resonance speed (157). Laundry care device (100) according to one of the preceding claims, characterized in that the control (119) is designed to activate the drum drive (123) during a braking time segment (171) following the drum time segment (153) in order to activate the laundry drum (107). to rotate at a braking speed (173), the braking speed (173) being lower than the drum speed (159) and greater than the detachment speed (161), the controller (119) being designed to control the washing liquid supply device (171) during the braking time segment (171). 118-1, 118-2) to be activated at least once in order to supply washing liquid to the laundry (135) in the laundry drum (107) at least once. Laundry care device (100) according to one of the preceding claims, characterized in that the control (119) is designed to monitor the number of activations of the washing liquid supply device (118-1, 118-2) and / or the amount of washing liquid supplied during the braking period (171) as a function of a weight of the laundry received in the laundry drum (107) detected by a weight sensor of the laundry care device (100) and / or as a function of a laundry care program selected by a user of the laundry care device (100) and / or as a function of one determined by a textile detection device To determine the type of fabric of the laundry and / or as a function of a saturation of the laundry (135) with washing liquid determined by a saturation device. Laundry care device (100) according to Claim 10 or 11 , characterized in that the controller (119) is designed to interrupt the deceleration time segment (171) during an intermediate time segment (175) in order to activate the drum drive (123) in order to rotate the laundry drum (107) at the drum speed (159) , in order to form a laundry tunnel (137) within the laundry (135) received in the laundry drum (107), and / or that the controller (119) is designed to interrupt the deceleration period (171) during an intermediate period (175) in order to to activate the drum drive (123) in order to rotate the laundry drum (107) at a further maximum speed (155-2). Laundry care device (100) according to one of the preceding claims, characterized in that 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 pump the washing liquid back into the laundry (135) the laundry drum (107), the controller (119) being designed to activate the pump (117) during the washing period (149) in order to supply washing liquid to the laundry (135) in the laundry drum (107). Laundry care device (100) according to one of the preceding claims, characterized in that a further washing liquid supply device (118-2), in particular fresh water supply device, is connected to the tub (105) by a supply line (129), the controller (119) being designed, to activate the further washing liquid supply device (118-2) during the washing period (149) in order to To supply washing liquid, in particular fresh water, to the tub (105). 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), a washing liquid supply device (118-1, 118-2) for supplying washing liquid into the laundry drum (107) during a washing period (149), and a controller (119) for controlling the drum drive (123) and the washing liquid supply device (118- 1, 118-2), characterized in that the method has the following method steps: activating (201) the drum drive (123) during a drum time segment (153) of the washing period (149) by the controller (119) to rotate the laundry drum (107) at a drum speed (159) to form a laundry tunnel (137) within the laundry (135) received in the laundry drum (107), the drum speed (159) is greater than a detachment speed (161) of the laundry drum (107) and less than a resonance speed (157) of the laundry drum (107), the detachment speed (161) being a maximum speed of the laundry drum (107) at which the in the laundry drum (107) releases the laundry (135) picked up from the laundry drum (107), and wherein 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), and activating (203) the washing liquid supply device (118-1, 118-2) during the washing period (149) by the controller (119) in order to supply washing liquid into the laundry tunnel (137) formed within the laundry drum (107) en.

Images