EP3375929A2 - Method for drying laundry, control method and control device for controlling a drying operation and water-bearing domestic appliance for laundry treatment - Google Patents

Abstract

The invention relates to a method for drying laundry (102) for a water-conducting domestic appliance (100) for laundry treatment, wherein the domestic appliance (100) comprises a tub (108) and a drum (104) arranged in the tub (108) for receiving the laundry (102). The method includes forming a liquid reservoir (118) in the tub (108) with the drum (104) out of the fluid reservoir (118) and introducing thermal energy into the drum (104) to move from the laundry (102 ) to transfer water absorbed in the liquid template (118) condensable water vapor.

Description

The invention relates to a method for drying laundry for a water-conducting household appliance for laundry treatment, a control method and a control device for controlling a drying process of a water-conducting household appliance for laundry treatment and a water-conducting household appliance for laundry treatment.

For drying laundry, a washer-dryer is needed for the drying process. Drying in the washing machine even for small load quantities, for example <2kg, is not possible.

The object of the invention is to provide an improved method for drying laundry for a water-conducting domestic appliance for laundry treatment, an improved control method and an improved control device for controlling a drying process of a water-conducting domestic appliance for laundry treatment and an improved water-conducting household appliance for laundry treatment.

According to the invention, this object is achieved by a method for drying laundry for a water-conducting domestic appliance for laundry treatment, a control method and a control device for controlling a drying process of a water-conducting household appliance for laundry treatment and a water-conducting household appliance for laundry treatment with the features of the main claims. Advantageous embodiments and further developments of the invention will become apparent from the following subclaims.

The advantages that can be achieved with the invention are that a liquid present in a lye container can be used as a condensation surface in order to condense water vapor leaving the laundry to be dried. This allows a simple drying process, which is suitable, for example, for washing machines that do not have a separate drying device, such as a heat pump or a fan.

• Bilden einer Flüssigkeitsvorlage in dem Laugenbehälter, wobei sich die Trommel außerhalb der Flüssigkeitsvorlage befindet; und
• Einbringen von Wärmeenergie in die Trommel, um von der Wäsche aufgenommenes Wasser in an der Flüssigkeitsvorlage kondensierbaren Wasserdampf zu überführen.

A method for drying laundry for a water-bearing domestic appliance for laundry treatment, wherein the household appliance comprises a tub and a drum arranged in the tub for receiving the laundry comprises the following steps:

• Forming a liquid reservoir in the tub, the drum being outside of the liquid reservoir; and
• Introducing heat energy into the drum to transfer water absorbed by the laundry in condensable water vapor on the liquid template.

The household appliance may be a washing machine. Such a washing machine can be designed without an additional drying device, as is known from known washing dryers or dryers. The method makes it possible to extend a known washing machine to a drying function. Alternatively, the household appliance may be a washer-dryer or dryer which already has a drying device whose drying function can be supplemented by the approach described here. The liquid template can be formed for example by water or a wash liquor. Thus, the condensation can be done for example on a cold water supply. The liquid reservoir can be formed by supplying liquid into the tub or by maintaining or removing liquid already in the tub so that a level of the liquid in the tub is adjusted so that the liquid is only in one below the drum located portion of the tub. In particular, the level can be set so that the drum does not come into contact with the liquid even with a rotation of the drum. In the step of introducing the heat energy can be introduced into a wall of the drum or into the interior of the drum. Due to the heat energy, the laundry located in the drum can be heated directly or indirectly, so that moisture in the laundry can evaporate. The resulting water vapor can escape from the drum and condense on the surface of the liquid reservoir and be bound. In this way, the laundry can be dried. The heat input can be provided by means of suitable methods, for example by means of induction, hot air or heat radiation.

The method may include a step of removing the liquid reservoir from the tub. For example, the liquid reservoir may be removed when the drying process is completed or when the liquid reservoir has reached a temperature which prevents or impedes further condensation of water vapor. If the drying process has not yet ended, the liquid template can be replaced, for example by cold water. Thus, after removing the liquid reservoir, the process may involve re-executing the steps of forming a liquid reservoir and optionally additionally introducing thermal energy into the liquid reservoir Drum include. The steps of the process can be repeated until the laundry has reached the desired degree of drying.

The method may include a step of detecting at least one temperature value representing a temperature within the tub. Advantageously, the step of removing and / or re-executing the steps of forming and introducing may be performed using the at least one temperature value. For example, the steps may be performed depending on a result of a comparison of the at least one temperature value with at least one threshold value. By monitoring the temperature, a current pass of the drying process may be continued until the temperature has reached a predetermined maximum threshold.

In the step of detecting the at least one temperature value, a temperature of the liquid template can be detected. In this way it can be checked whether the liquid original is still cool enough to condense more water vapor. Additionally or alternatively, a temperature of the drum is detected. By way of example, the temperature of the drum can be used to conclude a progress of the evaporation process taking place within the drum.

Additionally or alternatively, the method may include a step of detecting a level value representing a level of the liquid reservoir. In this way, it can be checked whether the level is still low enough so that contact between the drum and liquid is avoided. Accordingly, the step of removing and / or re-executing the steps of forming and introducing may be performed using the level value.

The method may include a step of stopping the introduction of the thermal energy. In this way, for example, overheating of the laundry can be avoided. Further, the method may include a step of spinning the laundry after the step of stopping the introduction of the heat energy. By spinning, more moisture can be removed from the laundry. In one embodiment, the steps of spinning and removing the liquid master are performed simultaneously.

Advantageously, the heat energy can be introduced in the step of introduction by induction. In this way, the drum and over the drum located in the drum laundry can be heated very quickly.

In order to implement the steps of the described method using a household appliance, a control method can be used. The control method may be carried out using, for example, a suitable control device of the household appliance.

• Bereitstellen eines Pumpsignals an eine Schnittstelle zu der Pumpeinrichtung, wobei das Pumpsignal ausgebildet ist, um die Pumpeinrichtung zum Bilden einer Flüssigkeitsvorlage in dem Laugenbehälter anzusteuern, wobei sich die Trommel außerhalb der Flüssigkeitsvorlage befindet; und
• Bereitstellen eines Wärmesignals an eine Schnittstelle zu der Heizeinrichtung, wobei das Wärmesignal ausgebildet ist, um die Heizeinrichtung zum Einbringen von Wärmeenergie in die Trommel anzusteuern, um von der Wäsche aufgenommenes Wasser in an der Flüssigkeitsvorlage kondensierbaren Wasserdampf zu überführen.

A control method for controlling a drying operation of a water-conducting domestic appliance for laundry treatment, the domestic appliance comprising a tub and a drum accommodating the laundry and a pumping device for controlling a liquid level in the tub and a heating device, comprising the following steps:

• Providing a pumping signal to an interface to the pumping means, the pumping signal being adapted to drive the pumping means to form a liquid reservoir in the tub, the drum located outside the liquid reservoir; and
• Providing a heat signal to an interface to the heater, wherein the heat signal is adapted to control the heater for introducing heat energy into the drum to transfer water absorbed by the laundry in water vapor condensable on the liquid template.

The pump signal and the heat signal may be electrical control signals. Using the pump signal, the pumping means can be controlled so that liquid is let into the tub or pumped out of the tub as long as the liquid reservoir has a level at which it is ensured that drum and liquid do not touch. Using the heat signal, the heater may be energized to provide sufficient heat energy to heat the laundry in the drum to vaporize moisture absorbed by the laundry. For carrying out further optional steps of the control method, further control signals can be provided or control signals already provided once can be provided again.

The approach presented here also creates a control device which is designed to execute, to control or to implement the steps of a variant of a method presented here in corresponding devices. Also by this embodiment of the invention in the form of a device, the object underlying the invention can be solved quickly and efficiently.

The apparatus may be configured to read in input signals and to determine and provide output signals using the input signals. One Input signal can represent, for example, a readable via an input interface of the device sensor signal. An output signal may represent a control signal or a data signal that may be provided at an output interface of the device. The apparatus may be configured to determine the output signals using a processing instruction implemented in hardware or software. By way of example, the device may for this purpose comprise a logic circuit, an integrated circuit or a software module and be realized for example as a discrete component or be comprised by a discrete component.

Also of advantage is a computer program product or computer program with program code which can be stored on a machine-readable carrier or storage medium such as a semiconductor memory, a hard disk memory or an optical memory. When the program product or program is executed on a computer or device, the program product or program may be used to perform, implement, and / or control the steps of the method of any of the embodiments described above.

A water-conducting domestic appliance for laundry treatment, for example a washing machine, a dryer or a washer-dryer, may have a named control device. In this way, the Hauhaltgerät be equipped with the functionality described herein for drying laundry.

Although the approach described is described with reference to a domestic appliance, the method described here can be used correspondingly in connection with a commercial or professional appliance, for example a medical appliance, such as a washer or disinfector, a small sterilizer, a large-scale disinfector or a container washer ,

Figur 1

ein wasserführendes Haushaltgerät gemäß einem Ausführungsbeispiel;

Figur 2

ein Ablaufdiagramm eines Verfahrens zum Trocknen von Wäsche gemäß einem Ausführungsbeispiel;

Figur 3

eine Steuervorrichtung zum Steuern eines Trocknungsvorgangs gemäß einem Ausführungsbeispiel;

Figur 4

ein Ablaufdiagramm eines Steuerverfahrens zum Steuern eines Trocknungsvorgangs gemäß einem Ausführungsbeispiel;

Figur 5

ein Ablaufdiagramm eines Verfahrens zum Trocknen von Wäsche gemäß einem Ausführungsbeispiel;

Figur 6

Kennlinien des Verfahrens zum Trocknen von Wäsche gemäß einem Ausführungsbeispiel;

Figur 7

ein wasserführendes Haushaltgerät gemäß einem Ausführungsbeispiel;

Figur 8

ein wasserführendes Haushaltgerät gemäß einem Ausführungsbeispiel;

Figur 9

ein wasserführendes Haushaltgerät gemäß einem Ausführungsbeispiel;

Figur 10

ein wasserführendes Haushaltgerät gemäß einem Ausführungsbeispiel; und

Figur 11

eine Schnittdarstellung durch ein wasserführendes Haushaltgerät gemäß einem Ausführungsbeispiel.

An embodiment of the invention is shown purely schematically in the drawings and will be described in more detail below. It shows

FIG. 1

a water-conducting household appliance according to an embodiment;

FIG. 2

a flow diagram of a method for drying laundry according to an embodiment;

FIG. 3

a control device for controlling a drying process according to an embodiment;

FIG. 4

a flowchart of a control method for controlling a drying operation according to an embodiment;

FIG. 5

a flow diagram of a method for drying laundry according to an embodiment;

FIG. 6

Characteristics of the method for drying laundry according to an embodiment;

FIG. 7

a water-conducting household appliance according to an embodiment;

FIG. 8

a water-conducting household appliance according to an embodiment;

FIG. 9

a water-conducting household appliance according to an embodiment;

FIG. 10

a water-conducting household appliance according to an embodiment; and

FIG. 11

a sectional view through a water-conducting household appliance according to an embodiment.

FIG. 1 shows a water-conducting household appliance 100 according to one embodiment. The household appliance 100 is exemplified here primarily as a washing machine for washing laundry 102 executed. The household appliance 100 has a drum 104 and a door 106. Through the door 106, the laundry 102 can be inserted into the drum 104. The drum 104 is rotatably disposed within a tub 108 of the household appliance 100. In the tub 108 is located during a washing process, washing liquor for washing the laundry 102. The wash liquor can be pumped down using a pumping device 110. The household appliance 100 also has a heating device 112, by means of which heat energy can be introduced into the drum 104. According to this embodiment, the heater 112 is configured as a heating unit for the drum 104. A temperature sensor 114 is disposed at a bottom of the tub 108 and configured to detect the temperature of the wash liquor or generally the free liquor in the tub 108. For controlling an operation of the household appliance 100, the household appliance 100 has a control unit 116, which is also referred to as a control device or electronics, or comprises such a control device or electronics.

Advantageously, the household appliance 100 is designed to additionally carry out a drying process in addition to a washing process. By the drying process, the laundry 102 can be dried. Alternatively, the household appliance 100 may also be designed only for carrying out the drying process. The drying process is based on the fact that water vapor leaving the laundry 102 condenses on a liquid receiver 118 located in the tub 108. For example, the liquid receiver 118 can be made of cold water, so that condensation takes place in the dry process in a cold water supply in the domestic appliance 100. Thus, the household appliance 100 may be referred to as a washer-dryer.

For the drying process, the liquid receiver 118 is first formed. This can be done by, for example, filling fresh water into the tub 108 becomes. If liquid is already present in the tub 108, it may optionally be used as the liquid receiver 118 when the temperature of the liquid is cool enough to allow the condensation of water vapor. The liquid receiver 118 is formed so that a level of the liquid receiver 118 is adjusted so that the drum 104 does not come into contact with the liquid of the liquid receiver 118. Using the heating device 112, the laundry 102 is heated during the drying process so far that moisture contained in the laundry 102 evaporates. The water vapor which forms can escape from the drum 104 and condense on the surface of the liquid receiver 118.

FIG. 2 FIG. 10 is a flowchart of a method of drying laundry according to an embodiment. FIG. The method can be used, for example, using the in FIG. 1 shown domestic appliance.

In a step 201, a liquid reservoir is formed in the tub of the household appliances. In this case, a level of the liquid template is set so that the drum of the household appliance is outside the liquid template. In this way it is avoided that the laundry located in the drum is again soaked through the liquid template.

In step 203, heat energy is introduced into the drum. The introduction of the heat energy can be done using a suitable heater. The heat energy heats the laundry and moisture in the laundry can evaporate and eventually settle on the liquid reservoir. By removing the moisture from the laundry, the laundry is dried.

Steps 201, 203 may be executed repeatedly. For this purpose, the liquid original is first removed, for example, in a step 205 from the tub. Subsequently, by repeatedly performing step 201, for example, by introducing cold water through a water supply of the domestic appliance, a new liquid receiver may be formed and used to condense further water vapor generated by repeating step 203 in a repetitive manner further heat energy is introduced to heat the laundry.

According to one embodiment, during the introduction of the heat energy 203, the drum is rotated in a step 207 so that the laundry located in the drum can be converted and the moisture can evaporate better.

Before the liquid receiver is removed from the tub, the drum is optionally rotated in a high speed step 209 to spin the laundry.

According to one embodiment, the method comprises a step 211, in which a temperature prevailing inside the tub is detected. For this purpose, for example, a temperature of the liquid reservoir and additionally or alternatively a temperature of the drum can be detected. Step 211 may be performed at different times during the process, or continuously or in parallel with one or more other steps of the process. The one or more temperature values acquired during step 211 are used in accordance with one embodiment to control one or more steps of the method. For example, the current passage of the drying process may be terminated when the temperature within the tub reaches or exceeds a threshold. For this purpose, on the one hand, the introduction 203 of the heat energy can be stopped and, in addition, the liquid reservoir can be removed from the tub. If the drying process is then to be continued, for example because a predetermined number of passes of the drying process has not yet been reached, or if it is determined, for example using sensor data, that the laundry has not yet reached a desired degree of drying, then another passage of the drying process started by again introducing a liquid feed in a newly executed step 201.

According to one embodiment, the method comprises a step 213, in which the level of the liquid reservoir is detected. A level representative value is used in accordance with one embodiment to decide whether step 205 is performed to remove or at least reduce the fluid reservoir. In this way, it can be prevented that the stock level of the liquid original increases so much that the drum could come into contact with the liquid template.

The level of the liquid original remains during the entire drying process, ie between the introduction 201 of the liquid original and the removal 205 of the liquid original always below a maximum filling level, which ensures that the drum does not come into contact with the liquid template. This can be ensured by selecting the level to be low enough initially, or by ensuring that the level is monitored continuously.

FIG. 3 shows a control device 316 for controlling a drying process according to an embodiment. According to one embodiment, the control device 316 is part of the in FIG. 1 shown control unit of a household appliance.

The control device 316 is designed to control a pumping device 310, a heating device 312 and optionally a drive 314 of the household appliance such that, for example, that based on FIG. 2 described method for drying laundry is performed. The pumping device 310 comprises, for example, a device for the controlled supply of liquid into the tub, for example a valve, and a device for removing the liquid from the tub, for example a pump. The heater 312 includes, for example, a coil for generating a magnetic field via which an induction current is generated in the drum to heat the drum. Additionally or alternatively, the heater 312 includes, for example, a heating wire for generating heat radiation or hot air that can be supplied to the laundry. The drive 314 is used according to one embodiment to rotate the drum. As a result, the laundry can be circulated or thrown.

On the input side, the control device 316 optionally has interfaces to a temperature detection device 314 and / or a level detection device 315. The temperature detector 314 is configured in accordance with various embodiments to detect a temperature of the liquid reservoir and, additionally or alternatively, a temperature of the drum or laundry or the air in the tub or drum.

The control device 316 has output interfaces via which the control device 316 can provide a pump signal 320 to the pump device 310, a heat signal 322 to the heater 312 and optionally a drive signal 323 to the drive 313. According to one exemplary embodiment, the control device 316 is designed to receive at least one temperature value 324 from the temperature detection device 314 and / or a liquid level fill level indicator 325 from the level detection device 315 and to generate at least one of the control signals 320, 322, 323.

FIG. 4 FIG. 12 is a flowchart of a control method for controlling a drying operation according to an embodiment. FIG. The control method can, for example, from the basis of FIG. 3 be executed described control device.

In a step 401, a pump signal is output via an interface, which is designed to control a pump device of the household appliance in such a way that a liquid feed suitable for condensing water vapor is formed in the tub.

In a step 403, a heat signal is output via the or another interface, which is designed to control a heating device of the household appliances such that laundry located in the drum heats up in such a way that moisture in the laundry evaporates.

In an optional step 405, a further pump signal is output, which is designed to control the pump device of the household appliance so that the liquid reservoir is removed from the tub. If the laundry has not yet been sufficiently dried, then steps 401, 403 can be carried out again.

In a step 407, optionally at least one temperature value is read in which represents a temperature of the liquid reservoir or of the drum and additionally or alternatively read in a value which represents a fill level of the liquid reservoir within the tub. According to one embodiment, at least one of the read-in values is compared with at least one threshold value. A result of the comparison is used, for example, to start step 405 or further steps of the method.

For example, in one embodiment, a result of a comparison between the temperature value and a threshold value is used to output another heat signal that terminates the introduction of the heat energy.

According to one embodiment, in a step 409, a drive signal is provided to a drive of the drum by which the drum is set in motion so that the laundry located in the drum is transferred or thrown. For example, the driving signal for circulating the laundry may be provided while the laundry is heated by executing the step 403. Additionally or alternatively, the drive signal may be provided for spinning the laundry, for example, during or before the liquid receiver is removed from the tub in step 405.

FIG. 5 FIG. 10 is a flowchart of a method of drying laundry according to an embodiment. FIG. The method can be used, for example, using the in FIG. 1 shown domestic appliance. The process enables a drying process in a washing machine without an additional blower. For example, a Kondenstrocknung done by a laundry load of less than 2kg in the washing machine.

Advantageously, a washing machine, equipped with, for example, an additional induction heating, for small loading volumes, a drying process carry out. According to one exemplary embodiment, the drying process is carried out continuously only when an inertia method has recognized a value of <2 kg of laundry. In a step 530, an optional check of the laundry weight takes place.

In a step 532, the start of the drying process takes place. At the beginning of the drying process, a water mask is placed in the tub in a step 201. This is below the level of the drum contact, so that the laundry is not moistened. This water mask serves as a condensation surface for the resulting water vapor during the drying process.

For the drying process a heat transfer takes place with induction switched on and repetitive turning rhythms. For this purpose, the laundry is then circulated in a repetitive washing cycle 207th Following the introduction of the water mask with activated induction 203. This rhythm is chosen so that the laundry falls freely on the one hand in the drum and then touches in a short phase heated by the induction drum shell , This ensures that sufficient heat is provided for the evaporation.

This process is temperature monitored in step 534 to control the drying process. As long as the monitored temperature does not exceed a threshold, steps 203, 207 are repeated or continued. When the threshold is reached, steps 203, 207 are discontinued and, instead, thermal spin is performed in step 209.

• Gemäß einem Ausführungsbeispiel erfolgt dazu eine Temperaturüberwachung der freien Flotte. Der Anstieg der Temperatur in der freien Flotte ist ein Indikator für die Kondensation des verdampften Wassers aus der Wäsche. Die Messung ist indirekt weil kein Kontakt zwischen freier Flotte und Wäsche besteht. Bei der Sensierung einer maximalen Temperatur Tmax_Drehen in der freien Flotte wird der Vorgang beendet.

For temperature monitoring in step 534 two possibilities are presented:

• According to one embodiment, a temperature monitoring of the free fleet takes place for this purpose. The increase in temperature in the free liquor is an indicator of the condensation of the evaporated water from the wash. The measurement is indirect because there is no contact between the free liquor and the laundry. When sensing a maximum temperature Tmax_Turn in the free liquor, the process is terminated.

According to a further exemplary embodiment, a temperature monitoring by means of the induction coils takes place additionally or alternatively. There, the temperature of the drum is measured directly via the temperature sensors located there. If the drum heats up too much or if it is no longer possible to put the power into the laundry, the process is also ended here.

After this process of temperature transfer in steps 203, 207, thermal spin 209 is performed. By heating the laundry, the residual moisture can be additionally reduced. When spinning 209, the water mask is pumped out.

So that the laundry does not come too long in contact with the heated drum is also turned off the induction heating.

Now the process of water make-up will form 201, let temperature affect the laundry 203, 207 and thermal spin 209 until the laundry has the desired degree of drying. This time is determined in a step 536. In step 536 it is checked whether the desired degree of drying has been reached. If this is not the case, steps 203, 207, 534, 209 are executed repeatedly. Otherwise, the drying process is ended. Additionally or alternatively, it is checked in step 536 whether a predetermined maximum number of repetitions of the steps 203, 207, 534, 209 has been reached. When the maximum repetitions have already been reached, the drying process is ended.

According to one embodiment, the timing of the completion of the drying process in step 536 is determined by the temperatures Tmax_turning and Tmax_turning. Where Tmax_Turn is the maximum temperature that should not be exceeded in step 207 of the tumble, and Tmax_Turn is the maximum temperature that should not be exceeded in step 209 of the spin.

The process repetitions, that is to say the repetitions of steps 203, 207, 534, 209, are also dependent on the selected program and the loading quantity according to one exemplary embodiment. Very small loads require fewer repetitions.

This drying process can also take place individually, ie without an upstream washing process. In this case, by means of step 530, a load measurement, for example MTV method (inertia method), can be connected upstream. This ensures that only small loads are dried.

Thus, it is possible to carry out a continuous washing and drying process in a small load washing machine. Also, in a washing machine, a drying process for small load can be performed separately.

FIG. 6 illustrates on the basis of some characteristics, the course of a drying process, as has already been described with reference to the preceding figures, according to an embodiment.

Shown are time profiles of the speed 641 of the drum of the household appliance, the temperature 643 of the liquor in the tub of the household appliance, the water level 645 of the fleet - also referred to as level, the Laugenpumpenbetriebs 647 and the induction heating 649th

The rotational speed 641 of the drum is increased during the thermal spin 209. The reference numeral 650 denotes times at which the water level is below the fleet.

The temperature of the fleet 6436 continuously increases during the successive drying processes, with an additional abrupt increase in temperature occurring at the beginning of the spin cycle 209.

The liquid level 645 of the liquor remains approximately constant during the individual drying processes and drops to zero during the thermal spin 209 due to removal of the liquor, since the entire liquor is renewed if possible in order to achieve the lowest possible temperature of the liquid feed when renewing the liquor.

The liquor pump operation 647 indicates that the drain pump is operating only to remove the liquor. The induction heating 649 starts each time shortly after the liquor has been filled and ends with the start of the removal of the fleet.

FIG. 7 shows a water-conducting household appliance 100 according to one embodiment. This may be an embodiment of the basis of FIG. 1 act described domestic appliance. The heater 112 is implemented as an induction heater configured to cause an induction current 712 in the drum 14 by which the drum 104 is heated. A laundry 102 adjacent to the drum 104 is also heated on the heated wall of the drum 104.

FIG. 8 shows a water-conducting household appliance 100 according to one embodiment. This may be an embodiment of the basis of FIG. 1 act described domestic appliance. On the tub 108, three heaters 112 are arranged in the form of induction coils as a heating unit for the drum 108 according to this embodiment.

FIG. 9 shows a water-conducting household appliance 100 according to one embodiment. This may be an embodiment of the basis of FIG. 1 act described domestic appliance.

By arrows, a discharge of heat from the drum 104 is shown. The induction heating heats the drum 104. The drum 104 heats the laundry 102 and the water evaporates. The vapor condenses in the liquid receiver 118 formed by caustic 118 according to this embodiment. The liquor 118 is heated. If the liquor 118 is too warm, it will be pumped off and replaced with fresh water.

In the in FIG. 9 In the state shown, the drum 104 and the laundry 102 are warm and the liquid receiver 118 is cold, so that the water vapor condenses on the liquid receiver 118.

FIG. 10 shows a water-conducting household appliance 100 according to one embodiment. This may be an embodiment of the basis of FIG. 1 act described domestic appliance. Based on FIG. 10 and the following ones FIG. 11 geometric boundary conditions are displayed.

According to this embodiment, the household appliance 100 has a further pump for circulating the wash liquor. The liquid receiver 118 is formed by water in the tub 108 according to this embodiment. By way of example, an amount of 2.5 liters of water at a level with a water column of 26 mmWS is used. There is no drum contact between the drum and the water of the liquid receiver 118.

In FIG. 10 a cut line 1060 is shown. A corresponding sectional view is in FIG. 11 shown.

FIG. 11 shows the in FIG. 10 called sectional view of in FIG. 10 illustrated household appliance 100.

Claims (11)

A method of drying laundry (102) for a water-bearing domestic appliance (100) for laundry treatment, the domestic appliance (100) comprising a tub (108) and a drum (104) arranged in the tub (108) for receiving the laundry (102) , and wherein the method comprises the following steps: Forming (201) a liquid reservoir (118) in the tub (108), the drum (104) being located outside of the liquid reservoir (118); and Introducing (203) thermal energy into the drum (104) to transfer water received by the laundry (102) to water vapor condensable on the liquid receiver (118). The method of claim 1, further comprising the step (205) of removing the liquid receiver (118) from the tub (108) and / or re-executing the steps (201, 203) of forming and inserting. Method according to claim 2, comprising a step (211) of detecting at least one temperature value (324) representing a temperature within the tub (108), the step (205) of removing and / or re-executing the steps (201, 203) forming and inserting using the at least one temperature value (324). Method according to claim 3, wherein in the step of detecting the at least one temperature value (324) a temperature of the liquid feed (118) and / or a temperature of the drum (104) is detected. A method according to any one of claims 2 to 4, including a step of detecting a level value (325) representing a level of the liquid receiver (118), wherein the step (205) of removing and / or re-executing the steps (201, 203) of Forming and introducing using the level value (325). A method according to any one of the preceding claims, comprising a step of stopping the introduction of heat energy and a step (209) of spinning the laundry (102) after the step of terminating. Method according to one of the preceding claims, wherein in the step (203) of introducing the heat energy is introduced by induction. A control method for controlling a drying process of a water-conducting domestic appliance (100) for laundry treatment, the domestic appliance (100) having a tub (108) and a drum (104) arranged in the tub (108) for receiving the laundry (102) and a pumping device (110 310) for controlling a level in the tub (108) and a heater (112; 312), and wherein the control method comprises the steps of: Providing (401) a pump signal (320) at an interface to the pumping means (110; 310), the pumping signal (320) being adapted to cause the pumping means (110; 310) to form a liquid reservoir (118) in the tub (108 ), the drum (104) being located outside the liquid receiver (118); and Providing (403) a heat signal (322) to an interface to the heater (112; 312), the heat signal (322) being configured to drive the heater (112; 312) to introduce thermal energy into the drum (104), in order to transfer water absorbed by the laundry (102) into water vapor condensable on the liquid receiver (118). A controller (116; 316) having means adapted to perform the steps (401, 403) of a method according to any one of the preceding claims. A water-conducting domestic appliance (100) for laundry treatment, comprising a control device (116; 316) according to claim 9. A computer program product with program code for carrying out the method according to any one of claims 1 to 7, when the computer program product is executed on a device.

Images