DE102016212525A1 - Laundry care device with a controller - Google Patents

Abstract

The present invention relates to a laundry care device (100) having a laundry drum (107) for receiving laundry, a drum drive (123) for rotating the laundry drum (107), with a torque detecting device (127) for detecting a torque of the laundry drum (107) and a Control (121) for controlling the drum drive (123). The controller (121) is configured to drive the drum drive (123) during a rotational time interval to rotate the laundry drum (107) at a first rotational speed (155) when the detected torque falls below a torque threshold (157). The controller (121) is configured to drive the drum drive (123) during the rotation time interval to rotate the laundry drum (107) at a second rotational speed when the detected torque exceeds the torque threshold (157), the second rotational speed being less than the first rotational speed Rotational speed (155), and wherein the controller (121) is adapted to control the second rotational speed in response to the detected torque of the laundry drum (107) to prevent damage to the laundry (109) in the laundry drum (107).

Description

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

In conventional laundry care appliances, the laundry drum is rotated during a washing operation by a drum drive at a maximum rotational speed. In this case, the maximum rotational speed of the laundry drum can be controlled by a control of the laundry care appliance, for example, depending on the weight of the laundry or the selected laundry care program of the laundry care appliance. However, such a control of the maximum rotational speed of the laundry drum does not necessarily allow a gentle laundry care for the laundry. For example, if laundry has jammed in the laundry drum, the drum drive will try to reach the maximum rotational speed, thereby increasing the torque of the laundry drum loaded with laundry and possibly damaging the laundry.

In the DE 43 10 595 A1 discloses a washing machine with a laundry drum, which is accelerated in one direction of rotation to a first speed below a system speed and in another direction of rotation to a second speed above the system speed.

In the FR 2 655 363 discloses a washing machine with a washing drum which is rotated in response to the weight of the laundry in the washing drum.

It is the object underlying the invention to provide a laundry care device that allows a laundry care gentle for the laundry.

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

According to one aspect, the object according to the invention is achieved by a laundry care device having a laundry drum for receiving laundry, a drum drive for rotating the laundry drum, with a torque detector for detecting a torque of the laundry drum and a controller for controlling the drum drive, wherein the controller is designed Drum drive to drive during a rotation time interval to rotate the laundry drum at a first rotational speed when the detected torque falls below a torque threshold, wherein the controller is adapted to drive the drum drive during the rotation time interval to rotate the laundry drum at a second rotational speed, if the detected Torque exceeds the torque threshold, wherein the second rotational speed is less than the first rotational speed, and wherein the controller is formed, the e second rotational speed in response to the detected torque of the laundry drum to control to prevent damage to the laundry in the laundry drum.

Thereby, the technical advantage is achieved that when the torque threshold is exceeded by the detected torque, the rotational speed is reduced in order to avoid damage to the laundry in the laundry drum.

If laundry is jammed in the laundry drum, the rotation of the laundry drum increases the torque and the laundry in the laundry drum may be damaged. When the detected torque falls below the torque threshold, the laundry drum may be rotated by the drum drive at a maximum first rotational speed during rotational speed control of the control to ensure advantageous laundry care of the laundry during the laundry care operation.

However, if the sensed torque exceeds the torque threshold, control transfers from rotational speed control to torque control wherein the laundry drum is rotated by the drum drive at a second rotational speed reduced from the maximum first rotational speed. Here, the controller controls the second rotation speed in response to the detected torque of the laundry drum loaded with laundry. As a result, damage to the laundry can be avoided by items trapped in the laundry drum.

Thus, by the controller on the one hand an effective and efficient laundry care with a rotation of the laundry drum with the maximum first rotational speed and on the other hand a very gentle laundry care during a rotation of the laundry drum with a reduced second rotational speed by the laundry care device can be ensured. In particular, the forces acting on the laundry are reduced to prevent damage to the laundry during the washing process.

A laundry care device is understood to mean a device which is used for laundry care, such as a washing machine or a tumble dryer. In particular, such a laundry care appliance is understood as a household laundry care appliance. So a laundry care device, which is used in the context of household management, and is treated with the laundry in normal household quantities.

In an advantageous embodiment of the laundry care apparatus, the controller is configured to increase the second rotational speed to the first rotational speed during the rotational time interval when the detected torque is less than the torque threshold, and the controller is configured to reduce the first rotational speed to the second rotational speed during the rotational time interval the detected torque exceeds the torque threshold.

Thereby, the technical advantage is achieved that a dynamic control of the rotational speed of the laundry drum loaded with laundry in dependence on the detected torque is made possible by the controller. Thus, in a trouble-free laundry care process, the laundry drum can be operated at the maximum first rotational speed to allow a particularly advantageous laundry care. On the other hand, in the case of a laundry item jammed in the laundry drum and an associated increase in the detected torque beyond the torque threshold, the controller reduces the maximum first rotational speed to the second reduction rate in order to achieve particularly gentle laundry care. If the detected torque decreases again below the torque threshold in the further course of the wash cycle, the rotational speed of the laundry drum can be increased again to the maximum first rotational speed. As a result, both a particularly effective and a gentle laundry care can be ensured.

In a further advantageous embodiment of the laundry care device, the controller is configured to increase the second rotational speed to the first rotational speed or to reduce the first rotational speed to the second rotational speed when the detected torque falls below the torque threshold value by a torque difference value or when the detected torque exceeds the torque threshold value exceeds the torque difference value.

As a result, the technical advantage is achieved that too frequent a change of the first and second rotational speed is avoided by the controller. If the detected torque is close to the torque threshold, there may be a repeated change between the first and second rotational speeds with a small increase or decrease in the detected torque. The torque difference value ensures that a change between the first and second rotational speed occurs only when the detected torque significantly exceeds or falls below the torque threshold.

In a further advantageous embodiment of the laundry care device, the laundry care device has a weight detection device for detecting a weight of laundry in the laundry drum, the laundry care device has a tub for receiving washing liquid and a level sensor for detecting a level of washing liquid in the tub, and / or has the laundry care apparatus comprises an air humidity sensor for detecting an air humidity value within the laundry care appliance, wherein the control is configured, the second rotational speed in dependence on the detected torque of the laundry drum, and the detected weight of the laundry, the detected level of washing liquid in the tub and / or controlled humidity value.

Thereby, the technical advantage is achieved that are different parameters available through the detected weight of the laundry, the detected level of washing liquid in the tub and / or the detected humidity value of the control to control the second rotation speed particularly advantageous when the detected torque exceeds the torque threshold. As a result, a particularly gentle laundry care can be ensured.

In a further advantageous embodiment of the laundry care appliance, the laundry care appliance has a program selection device for selecting a plurality of selectable laundry care programs, and the controller is configured to control the first rotation speed in dependence on the selected laundry care program, and / or the control is configured, the second rotation speed depending on the detected torque of the laundry drum and the selected laundry care program to control.

As a result, the technical advantage is achieved that by selecting the laundry care program by the user of the laundry care device, a preselection can be made whether For example, particularly sensitive laundry, such as silk or woolen textiles, is used. As a result, the control can take into account the selected laundry care program when controlling the first and second rotational speeds and thus ensure a particularly advantageous control of the drum drive.

In a further advantageous embodiment of the laundry care appliance, the torque threshold value is a predetermined torque threshold value.

Thereby, the technical advantage is achieved that can be detected easily and quickly by the controller, whether the detected torque exceeds or exceeds the predetermined torque threshold. The predetermined torque threshold value can be determined, for example, by various reference measurements with a specific type of laundry care appliance.

In a further advantageous embodiment of the laundry care device, the laundry care device has a weight detection device for detecting a weight of laundry in the laundry drum, and / or the laundry care device has a tub for receiving washing liquid and a temperature sensor for detecting a temperature of washing liquid in the tub the controller is configured to determine the torque threshold as a function of the detected weight of the laundry or the detected temperature of the washing liquid.

Thereby, the technical advantage is achieved that a dynamic control of the torque threshold allows a particularly effective laundry care, since the maximum first rotational speed is reduced only to the second rotational speed, when the increase of the torque above the dynamically determined torque threshold on jamming of the laundry in the laundry drum based.

In a further advantageous embodiment of the laundry care appliance, the laundry care appliance has a program selection device for selecting a plurality of selectable laundry care programs, and the controller is configured to determine the torque threshold value as a function of the selected laundry care program.

This achieves the technical advantage that dynamically controlling the torque threshold in response to the selected laundry maintenance program enables effective control of the rotational speed by both the controller and the user.

In a further advantageous embodiment of the laundry care device, the controller is configured to detect the rotational speed of the laundry drum, wherein the controller is configured to disable the drum drive or drive the drum drive to rotate the laundry drum in an opposite rotational direction when the detected rotational speed is a rotational speed threshold below.

As a result, the technical advantage is achieved that in a particularly strong jamming of laundry in the laundry drum of the laundry care process can be interrupted, or by changing the direction of rotation, the blockage of the laundry drum can be solved. In case of a strong blockage of the laundry drum by washing and a particularly large torque, the detected rotational speed of the laundry drum may fall below the rotational speed threshold. By stopping the rotation of the laundry drum or rotating the laundry drum in an opposite direction, damage to the laundry can be avoided.

In a further advantageous embodiment of the laundry care device, the torque detection device has a power detection device for detecting an electrical power value of the drum drive, wherein the controller is designed to control the second rotation speed in dependence on the detected electrical power value.

Thereby, the technical advantage is achieved that a particularly effective detection of the torque of the laundry drum is ensured by the power detecting means for detecting an electric power value of the drum drive, since the torque is proportional to the electrical conduction value. Thus, the controller can advantageously determine the corresponding torque of the laundry drum from the detected electrical power value.

In a further advantageous embodiment of the laundry care device, the power detection element comprises a current sensor for detecting a supply current of the drum drive.

As a result, the technical advantage is achieved that a particularly advantageous determination of the torque of the laundry drum is made possible by the detection of the supply current of the drum drive by the current sensor.

According to a second aspect of the invention, the object is achieved by a method for controlling a drum drive of a laundry care device, wherein the laundry care device comprises a laundry drum for receiving laundry, a drum drive for rotating the laundry drum, a torque detecting device for detecting a torque of the laundry drum and a controller for controlling the drum drive, the method comprising the steps of first driving the drum drive during a rotation time interval to rotate the laundry drum at a first rotational speed when the detected torque falls below a torque threshold, second driving the drum drive during the rotational time interval around the laundry drum Rotate a second rotational speed when the detected torque exceeds a torque threshold, wherein the second rotational speed is lower than the ers te rotational speed, and controlling the second rotational speed in response to the detected torque of the laundry drum to avoid damage to the laundry in the laundry drum.

As a result, the technical advantage is achieved that a particularly advantageous control of the rotational speed of the laundry drum in response to the detected torque of the laundry drum is ensured by the controller.

In a further embodiment of the method, the laundry care appliance has a program selection device for selecting a plurality of selectable laundry care programs, the method comprising controlling the second rotational speed in dependence on the detected torque of the laundry drum loaded with laundry and the selected laundry care program.

Thereby, the technical advantage is achieved that the control of the rotational speed in response to a manually selected laundry care program allows a particularly effective laundry care.

In a further embodiment of the method, the first drive of the drum drive during the rotation time interval comprises reducing the first rotation speed to the second rotation speed when the detected torque exceeds the torque threshold, and the second driving the drum drive during the rotation time interval comprises increasing the second rotation speed to the second rotation speed includes first rotational speed when the detected torque falls below the torque threshold.

This achieves the technical advantage that a dynamic change between the first rotational speed and the second rotational speed during the rotational time interval can be made possible.

In a further embodiment of the method, the first driving comprises reducing the first rotational speed to the second rotational speed when the detected torque exceeds the torque threshold by a torque difference value, and the second driving comprises increasing the second rotational speed to the first rotational speed when the detected torque falls below the torque threshold by a torque difference value.

This achieves the technical advantage that a change between the first and second rotational speeds can only be performed if a significant change in the torque threshold occurs.

Further embodiments will be explained with reference to the accompanying drawings. Show it:

1 a schematic view of a laundry care device;

2 a schematic view of a laundry care device with a controller for controlling a drum drive of the laundry care device;

3 a graphical representation of a rotation process of a laundry drum in a laundry care device;

4 a graphical representation of a torque change during a rotation process of a laundry drum in a laundry care device; and

5 a sequence of a method for controlling a drum drive of the laundry care device.

1 shows a schematic view of a general laundry care device 100 , such as a washing machine. The laundry care device 100 includes a dispenser tray 101 , in the wash-care substance, such as detergent, can be filled. The laundry care device 100 includes a door 103 for loading the laundry care device 100 with laundry.

2 shows a schematic view of a laundry care device with a controller for controlling a drum drive of the laundry care device. The laundry care device 100 includes a tub 105 for holding washing liquid and one in the tub 105 arranged laundry drum 107 for receiving laundry 109 ,

The tub 105 has a drain opening 111 on which at a bottom of the tub 105 is arranged. The drain opening 111 is with a lead 113 connected. In the line 113 is a pump 115 for pumping washing liquid through the line 113 arranged. The pump 115 is designed to wash liquid from the drain opening 111 from the tub 105 pump out and the pumped washing liquid through the line 113 and through an export opening 117 from the laundry care device 100 pump out. The pump 115 is through a pump connection 119 with a controller 121 of the laundry care device 100 connected. The control 121 is trained, the pump 115 to control.

The laundry care device 100 also has a drum drive 123 for rotating the laundry drum 107 on which is formed, the laundry drum 107 to rotate at different rotational speeds. The drum drive 123 is with the controller 121 through a drum connection 125 connected. The control 121 is formed the drum drive 123 to control.

The laundry care device 100 further comprises a torque detecting device 127 for detecting a torque of the laundry drum 107 on. The torque detection device 127 is with the controller 121 through a set-up connection 129 connected and is with the drum drive 123 by a drum drive connection 130 connected.

The laundry care device 100 also has a program selector 131 for selecting a plurality of selectable laundry care programs. The program selector 131 is with the controller 121 through a selection link 133 connected.

In conventional laundry care appliances 100 is the rotational speed of the laundry drum 107 controlled in response to specific inputs. The most important inputs are in particular the textile type of the laundry 109 and the type of laundry care program selected. In laundry care appliances 100 becomes the laundry drum 107 rotates at a maximum rotational speed during a laundry maintenance program. The maximum rotation speed can be either predetermined or dynamically regulated. At a dynamically regulated maximum rotational speed, the maximum rotational speed may be dependent on the weight of the laundry 109 in the laundry drum 107 , the temperature of washing liquid in the tub 105 which depend on air humidity or on a manual input of the user.

The disadvantage of controlling the maximum rotational speed in conventional Wäschepflegeräten 100 is that a reduction in the rotational speed of the laundry drum 107 does not necessarily mean that the laundry care process for the laundry 109 is carried out gently. If there is laundry 109 in the laundry drum 107 has jammed, the drum drive 123 For example, try to reach the maximum rotational speed, which increases the torque of the laundry 109 loaded laundry drum 107 increased and causing the laundry 109 may be damaged.

In the laundry care device according to the invention 100 is the controller 121 trained the drum drive 123 during a rotation time interval as part of a rotational speed control to control the laundry drum 107 to rotate at a maximum first rotational speed when through the torque detector 127 recorded torque of using laundry 109 loaded laundry drum 107 falls below a torque threshold.

However, if the detected torque exceeds the torque threshold, then the controller will 121 the maximum first rotation speed of the laundry drum 107 in the context of a torque control to a second rotational speed, which is less than the first rotational speed, reduced. In this case the torque control is the control 121 formed, the second rotational speed in response to the detected torque of the laundry 109 loaded laundry drum 107 to control damage to the laundry 109 in the laundry drum 107 to avoid.

If, in the case of torque control, the rotational speed again falls below the torque threshold value, the controller can 121 from the torque control to the rotation speed control switch to the laundry drum 107 again to drive at the maximum first rotational speed, but in this case by the controller 121 ensuring that during the rotational speed control the detected torque does not exceed the torque threshold. However, if the detected torque should again exceed the torque threshold, control changes 121 from the rotation speed control again to the torque control, and the first rotation speed is again reduced to the second rotation speed.

If the detected torque of the laundry drum 107 In a narrow range around the torque threshold, hysteresis can be introduced to avoid frequent switching between torque control and rotational speed control control 121 to avoid. In this case, the controller increases 121 the second rotational speed only reduces or reduces the control to the first rotational speed when the detected torque falls below the torque threshold value by a torque difference value 121 the first rotational speed only to the second rotational speed when the detected torque exceeds the torque threshold by a torque difference value. If the torque difference value is sufficiently large, it can be prevented from switching too frequently between the rotation speed control and the torque control.

Thus, with an increasing torque, which in particular by a in the laundry drum 107 Jammed laundry may be caused by the control 121 the maximum first rotational speed can be reduced to the second rotational speed to prevent damage to the laundry 109 in the laundry drum 107 to avoid.

Here, the torque threshold may include a predetermined or a dynamic torque threshold. In the case of a dynamic torque threshold, the controller can 121 the torque threshold, for example, depending on the detected by a weight detection device weight of the laundry 109 and / or in dependence on a temperature of the washing liquid detected by a temperature sensor. In the case of a dynamic torque threshold, the controller can 121 Further, in determining the torque threshold, the user selects by means of a program selector 131 take into account selected laundry care program. Thus, for example, the torque threshold may also change during a laundry care operation, and, for example, in dry and wet laundry 109 in the laundry drum 107 have different values.

In addition, the controller 121 be formed, the rotational speed of the laundry drum 107 to capture, and the drum drive 123 to disable or drum drive 123 to head for the laundry drum 107 in an opposite direction of rotation when the detected rotational speed is less than a rotational speed threshold. This will ensure that if the rotational speed drops significantly below the rotational speed threshold, it will be ensured that the drum drive is deactivated 123 or by changing the direction of rotation of the laundry drum 107 optionally on the laundry drum 107 jammed laundry 109 safely solve again, causing damage to the laundry 109 can be avoided.

The advantage of the laundry care device according to the invention 100 is in particular that a corresponding control of the rotational speed of the laundry drum 107 allows a particularly effective and gentle at the same time laundry care process, which avoids damage to delicate laundry items or at least reduced. By the torque-dependent control of the rotational speed of the laundry drum 107 can be a slow change in the rotational speed of the laundry drum 107 be ensured, thereby reducing the laundry 109 particularly gentle in the laundry drum 107 can be turned. If the torque detecting device 127 a power detecting element for detecting an electric power of the drum drive 123 includes, can also be dispensed with a further sensor. Furthermore, the torque-dependent control of the rotational speed by the user of the laundry care device 100 If required, it can be activated or deactivated to ensure particularly gentle laundry care of the laundry 109 to reach.

3 shows a graphical representation of a rotation process of a laundry drum in a laundry care device. 3 shows a temporal representation of the rotational speed of the laundry drum 107 , and the torque of the laundry drum 107 which are along the ordinate axis 135 as a function of time, which along the abscissa axis 137 is given, are applied.

The first turn 139 shows the course of the rotational speed of the laundry drum 107 , The second turn 141 shows the course of the torque of the laundry drum 107 ,

According to the in 3 illustrated embodiment are different time periods 143 . 145 . 147 . 149 . 151 . 153 a rotation time interval shown. In the first, second and third time periods 143 . 145 . 147 controls the controller 121 according to the rotational speed control the drum drive 123 to the laundry drum 107 at a first maximum rotational speed 155 to rotate, where the torque is the torque threshold 157 does not exceed.

At the end of the third period 147 the torque exceeds the torque threshold 157 , The control 121 changes from rotation speed control to torque control. The control 121 controls the drum drive 123 to the laundry drum 107 to rotate at a second rotational speed, which is less than the maximum, first rotational speed 155 is. During the fourth and fifth time periods 149 . 151 the torque control is active and the control 121 controls the second rotational speed in response to the detected torque of the laundry 109 loaded laundry drum 107 , Here, the torque threshold becomes 157 not exceeded, causing damage to the laundry 109 can be avoided.

During the fifth period 153 the detected torque falls below the torque threshold 157 , causing the controller 121 from the torque control back to the rotation speed control and the second rotation speed of the laundry drum 107 back to the first, maximum rotational speed 155 is increased.

Here are during different rotation time intervals during a wash cycle fluctuations of the rotational speeds by the first rotational speed, and fluctuations of the torque by the torque threshold 157 possible. Here, the controller 121 to compensate for the fluctuations by taking into account a feedback control or by using reference values.

4 shows a graphical representation of a torque change during a rotation process of a laundry drum 107 in a laundry care device. This shows 4 in particular a temporal representation of the supply current of the drum drive 123 of the laundry care device 100 which is along the ordinate axis 135 as a function of time, which along the abscissa axis 137 is given, is applied. Here is the torque of the laundry drum 107 proportional to the supply current of the drum drive 123 and the torque detecting device 127 comprises a power detecting means for detecting an electric power value of the drum drive 123 on. The laundry drum 107 has a laundry load of 5 kg and is driven by the drum drive 123 according to the rotational speed control of the controller 121 at a first rotational speed 155 powered by 50 revolutions per minute.

The third turn 159 shows the course of the supply current of the drum drive 123 , As in the third turn 159 is shown, the supply current of the drum drive changes 123 during the wash cycle significantly. That to the supply current of the drum drive 123 proportional torque of the laundry 109 loaded laundry drum 107 thus also changes significantly. The significant change in torque results from the different compression of the laundry 109 between the laundry drum 107 the housing of the laundry care device 100 and the door 103 ,

5 1 shows a sequence of a method for controlling a drum drive of the laundry care appliance, which according to the embodiments of the 2 . 3 and 4 is described.

The procedure 200 includes the first driving 201 of the drum drive 123 during a rotation time interval to the laundry drum 107 at a first rotational speed 155 to rotate when the detected torque is a torque threshold 157 below. The procedure 200 includes the second driving 203 of the drum drive 123 during the rotation time interval to the laundry drum 107 to rotate at a second rotational speed when the detected torque is a torque threshold 157 exceeds, wherein the second rotational speed is less than the first rotational speed 155 is. The procedure 200 includes the tax 205 the second rotational speed in response to the detected torque of the laundry 109 loaded laundry drum 107 to damage the laundry 109 in the laundry drum 107 to avoid.

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

The scope of the present invention is given by the claims and is not limited by the features illustrated in the specification or shown in the figures.

LIST OF REFERENCE NUMBERS

100

 Laundry care device

101

 dispenser tray

103

 door

105

 tub

107

 washing drum

109

 Laundry

111

 drain hole

113

 management

115

 pump

117

 outfeed

119

 pump connection

121

 control

123

 drum drive

125

 drum link

127

 Torque detector

129

 Setup procedures connection

130

 Drum drive connection

131

 Program selector

133

 choice connection

135

 axis of ordinates

137

 abscissa

139

 First turn

141

 Second turn

143

 First period

145

 Second period

147

 Third period

149

 Fourth period

151

 Fifth period

153

 Sixth period

155

 First rotation speed

157

 Torque threshold

159

 Third turn

200

 Method for controlling a drum drive of a laundry care device

201

 First step: First driving the drum drive

203

 Second method step: second activation of the drum drive

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been 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.

Cited patent literature

• DE 4310595 A1 [0003]
• FR 2655363 [0004]

Claims (15)

Laundry care device ( 100 ) with a laundry drum ( 107 ) for receiving laundry, a drum drive ( 123 ) for rotating the laundry drum ( 107 ), with a torque detection device ( 127 ) for detecting a torque of the laundry drum ( 107 ) and a controller ( 121 ) for controlling the drum drive ( 123 ), characterized in that the controller ( 121 ) is formed, the drum drive ( 123 ) during a rotation time interval to control the laundry drum ( 107 ) at a first rotational speed ( 155 ) when the detected torque has a torque threshold ( 157 ) and that the controller ( 121 ) is formed, the drum drive ( 123 ) during the rotation time interval to control the laundry drum ( 107 ) at a second rotational speed when the detected torque exceeds the torque threshold (FIG. 157 ), wherein the second rotational speed is less than the first rotational speed ( 155 ), and wherein the controller ( 121 ) is formed, the second rotational speed in dependence on the detected torque of the laundry drum ( 107 ) to prevent damage to the laundry ( 109 ) in the laundry drum ( 107 ) to avoid. Laundry care device ( 100 ) according to claim 1, characterized in that the controller ( 121 ) is formed during the rotation time interval, the second rotational speed to the first rotational speed ( 155 ) when the detected torque exceeds the torque threshold ( 157 ) and that the controller ( 121 ) is formed during the rotation time interval, the first rotational speed ( 155 ) to the second rotational speed when the detected torque exceeds the torque threshold (FIG. 157 ) exceeds. Laundry care device ( 100 ) according to claim 2, characterized in that the controller ( 121 ) is formed, the second rotational speed to the first rotational speed ( 155 ) or the first rotation speed ( 155 ) to the second rotational speed when the detected torque exceeds the torque threshold (FIG. 157 ) falls below a torque difference value or when the detected torque exceeds the torque threshold ( 157 ) exceeds the torque difference value. Laundry care device ( 100 ) according to one of the preceding claims, characterized in that the laundry care appliance ( 100 ) a weight detecting device for detecting a weight of laundry ( 109 ) in the laundry drum ( 107 ) that the laundry care device ( 100 ) a tub ( 105 ) for receiving washing liquid and a level sensor for detecting a level of washing liquid in the tub ( 105 ), or that the laundry care device ( 100 ) an air humidity sensor for detecting a humidity value within the laundry care device ( 100 ), wherein the controller ( 121 ) is formed, the second rotational speed in dependence on the detected torque of the laundry drum ( 107 ), and the detected weight of the laundry, the detected level of washing liquid in the tub ( 105 ) or the detected humidity value. Laundry care device ( 100 ) according to one of the preceding claims, characterized in that the laundry care appliance ( 100 ) a program selection device ( 131 ) for selecting a plurality of selectable laundry care programs, and that the controller ( 121 ), the first rotational speed ( 155 ) depending on the selected laundry care program, or that the controller ( 121 ) is formed, the second rotational speed in dependence on the detected torque of the laundry drum ( 107 ) and from the selected laundry care program. Laundry care device ( 100 ) according to one of the preceding claims, characterized in that the torque threshold ( 157 ) a predetermined torque threshold ( 157 ). Laundry care device ( 100 ) according to one of claims 1 to 5, characterized in that the laundry care device ( 100 ) a weight detecting device for detecting a weight of laundry ( 109 ) in the laundry drum ( 107 ), or that the laundry care device ( 100 ) a tub ( 105 ) for receiving washing liquid and a temperature sensor for detecting a temperature of washing liquid in the tub ( 105 ), wherein the controller ( 121 ), the torque threshold ( 157 ) depending on the detected weight of the laundry ( 109 ) or the detected temperature of the washing liquid. Laundry care device ( 100 ) according to one of claims 1 to 5, and 7, characterized in that the laundry care device ( 100 ) a program selection device ( 131 ) for selecting a plurality of selectable laundry care programs, and that the controller ( 121 ), the torque threshold ( 157 ) depending on the selected laundry care program. Laundry care device ( 100 ) according to one of the preceding claims, characterized in that the controller ( 121 ), the rotational speed of the laundry drum ( 107 ), whereby the controller ( 121 ) is formed the drum drive ( 123 ) or disable the drum drive ( 123 ) to control the laundry drum ( 107 ) to rotate in an opposite rotational direction when the detected rotational speed is less than a rotational speed threshold. Laundry care device ( 100 ) according to one of the preceding claims, characterized in that the torque detection device ( 127 ) a power detection device for detecting an electric power value of the drum drive ( 123 ), wherein the controller ( 121 ) is configured to control the second rotation speed in dependence on the detected electric power value. Laundry care device ( 100 ) according to claim 10, characterized in that the power detection element comprises a current sensor for detecting a supply current of the drum drive ( 123 ). Procedure ( 200 ) for controlling a drum drive ( 123 ) of a laundry care device ( 100 ), wherein the laundry care device ( 100 ) a laundry drum ( 107 ) for receiving laundry, a drum drive ( 123 ) for rotating the laundry drum ( 107 ), a torque detecting device ( 127 ) for detecting a torque of the laundry drum ( 107 ) and a controller ( 121 ) for controlling the drum drive ( 123 ), characterized in that the method ( 200 ) includes the following steps, First Activation ( 201 ) of the drum drive ( 123 ) during a rotation time interval to the laundry drum ( 107 ) at a first rotational speed ( 155 ) when the detected torque has a torque threshold ( 157 ), second triggering ( 203 ) of the drum drive ( 123 ) during the rotation time interval to the laundry drum ( 107 ) at a second rotational speed when the detected torque is a torque threshold ( 157 ), wherein the second rotational speed is less than the first rotational speed ( 155 ), and taxes ( 205 ) the second rotational speed in dependence on the detected torque of the laundry drum ( 107 ) to prevent damage to the laundry ( 109 ) in the laundry drum ( 107 ) to avoid. Procedure ( 200 ) according to claim 12, characterized in that the laundry care device ( 100 ) a program selection device ( 131 ) for selecting a plurality of selectable laundry care programs, and that the method ( 200 ) controlling ( 205 ) the second rotational speed as a function of the detected torque of the laundry ( 109 ) loaded laundry drum ( 107 ) and from the selected laundry care program. Procedure ( 200 ) according to claim 12 or 13, characterized in that the first driving ( 201 ) of the drum drive ( 123 ) during the rotation time interval reducing the first rotation speed ( 155 ) to the second rotational speed when the detected torque exceeds the torque threshold (FIG. 157 ) and that the second driving ( 203 ) of the drum drive ( 123 ) during the rotation time interval increasing the second rotation speed to the first rotation speed ( 155 ) when the detected torque exceeds the torque threshold ( 157 ) falls below. Procedure ( 200 ) according to claim 14, characterized in that the first driving ( 201 ) reducing the first rotational speed ( 155 ) to the second rotational speed when the detected torque exceeds the torque threshold (FIG. 157 ) exceeds by a torque difference value, and that second driving ( 203 ) increasing the second rotational speed to the first rotational speed ( 155 ) when the detected torque exceeds the torque threshold ( 157 ) falls below a torque difference value.

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