EP3527713B1 - Détection des enroulements de linge dans les sèche-linge - Google Patents

Détection des enroulements de linge dans les sèche-linge Download PDF

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Publication number
EP3527713B1
EP3527713B1 EP19155900.4A EP19155900A EP3527713B1 EP 3527713 B1 EP3527713 B1 EP 3527713B1 EP 19155900 A EP19155900 A EP 19155900A EP 3527713 B1 EP3527713 B1 EP 3527713B1
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EP
European Patent Office
Prior art keywords
laundry
frequency
drum
predefined
peak
Prior art date
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EP19155900.4A
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German (de)
English (en)
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EP3527713A1 (fr
Inventor
Kai-Uwe Bache
Maike Blanken
Klaus-Robert MÜLLER
Wiktor Pronobis
Ekkehard VON DER WAYDBRINK
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BSH Hausgeraete GmbH
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BSH Hausgeraete GmbH
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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F58/00—Domestic laundry dryers
    • D06F58/32—Control of operations performed in domestic laundry dryers 
    • D06F58/34—Control of operations performed in domestic laundry dryers  characterised by the purpose or target of the control
    • D06F58/36—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F58/38—Control of operational steps, e.g. for optimisation or improvement of operational steps depending on the condition of the laundry of drying, e.g. to achieve the target humidity
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02—Characteristics of laundry or load
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/46—Drum speed; Actuation of motors, e.g. starting or interrupting
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/52—Changing sequence of operational steps; Carrying out additional operational steps; Modifying operational steps, e.g. by extending duration of steps

Definitions

  • the invention relates to a method for recognizing laundry winders in a laundry drying device with a horizontally rotatable laundry drum.
  • the invention also relates to a laundry drying device which is set up to carry out the method.
  • laundry winders also referred to as laundry knots
  • laundry knots When laundry is moved in a rotatable laundry drum of a laundry dryer, so-called “laundry winders” (also referred to as laundry knots) can occur, which negatively affect the drying result.
  • laundry winders Under laundry winders a rolling up of laundry items or a rolling of laundry items into other laundry items is understood, so that the entangled laundry items can no longer move freely in the laundry drum.
  • a laundry drum in which two specially shaped drivers are arranged opposite one another.
  • the carriers move the laundry in such a way that only a few wrappers are created or that the curlers can come loose because they fall onto the carriers at the right angle.
  • the drivers cannot reliably prevent laundry curlers from forming and remaining in place.
  • DE 10 2013 215 675 A1 discloses a method for operating a laundry drying device with a horizontally mounted, rotatable laundry drum, the method comprising at least the step of determining a degree of laundry knotting (curling) of laundry items located in the laundry drum.
  • the step of determining can include determining the degree of laundry knotting from an evaluation of regularly recurring peaks of an electrical motor signal, in particular a motor current signal, determined via a rotational position of the laundry drum.
  • Measuring electrodes belonging to the resistance measuring device are arranged in the end shield or in the drum.
  • the measuring electrodes can be two metal strips that are attached parallel to one another on a lower door opening edge in the bearing plate.
  • the electrical resistance of the laundry depends on the amount of water bound in the laundry: the drier the laundry, the higher its electrical resistance.
  • Two different methods are known for measuring resistance. In a first method of determining moisture content, a low DC voltage is applied to the measuring electrodes. The resulting measurement signal is passed through a voltage divider. The resistance value is determined from the measurement signal, averaged if necessary.
  • the moisture or the degree of dryness of the laundry are determined using a corresponding characteristic curve.
  • a square alternating voltage signal with a high frequency is applied to the measuring electrodes.
  • the resulting measurement signal can be routed via a bridge circuit, for example an H-bridge.
  • the measurement signal with the highest value and the measurement signal with the lowest value can be deleted from several (e.g. eight consecutive) measurement signals and then the measurement signal with the lowest value of the remaining values can be selected for further processing.
  • the selected measurement signals can be smoothed further using a Bessel filter.
  • the degree of dryness can be determined from the Bessel-filtered measurement signal (s), for example by means of a characteristic curve.
  • EP 2 593 601 B1 discloses a method for operating a tumble dryer device for drying laundry, in which an alternating voltage signal is applied to laundry, a moisture content of the laundry is determined by measuring a current flowing through the laundry, an envelope signal successively for determining the moisture content from the measured current Samples is generated.
  • EP 2 593 601 B1 also discloses that a clothes dryer apparatus can be adapted to operate to dry laundry by a method in which: an AC voltage signal is applied to laundry and a moisture content of the laundry is determined by measuring a current conducted through the laundry; and in order to determine the moisture content from the measured current value, an envelope curve signal of successive sampled values is generated.
  • the tumble dryer device comprises, for example, an alternating voltage generator that generates an alternating voltage, at least one electrode which is connected to outputs of the alternating voltage generator, wherein the at least one electrode can be covered by the laundry, and a control circuit which is used to determine a characteristic Size for a moisture content of the laundry from a measured alternating current between the electrodes is functionally connected to the at least one electrode.
  • WO 2016/085252 A1 discloses a clothes dryer, the control device of which includes an information receiving unit for receiving information on objects to be dried indicating a state of the objects to be dried within a drum.
  • the control device compares a heating output over time of a heater with an output during normal operation, and reduces the heating output of the heater based on the state of the objects to be dried based on the information, or controls a drying period based on the state of the objects to be dried and the heating power.
  • JP 2010051431 A discloses a method for determining entanglement of laundry.
  • a washing machine comprises a vibration detection unit for detecting a vibration of a receiving pan and a tangled state determination unit which detects a change in the vibration detected by the vibration detection unit.
  • a change in the measured quantity exceeds a predetermined value, which indicates that the laundry is tangled
  • drum rotation is controlled.
  • the entanglement determination unit calculates a change in an amplitude value and a frequency component value of a signal obtained from the vibration detection unit, and determines whether or not the laundry is entangled.
  • the object is achieved by a method for recognizing laundry winders in a laundry drying device with a horizontally rotatable laundry drum, in which a time The course of an electrical resistance of laundry in the laundry drum is recorded during a drying process with the laundry drum rotating, the temporal course is transformed into a frequency pattern, a temporal sequence of a frequency position of at least one frequency peak in the frequency pattern is monitored and if a frequency change of the at least a monitored frequency position reaches at least a predetermined value, a laundry winder is inferred from laundry located in the laundry drum.
  • the knowledge that there are laundry winders in turn makes it possible to take measures to save energy and / or to achieve a desired degree of dryness more precisely.
  • This method uses the principle of mechanical slip to differentiate the laundry wrapper from a normal laundry case. This is because the rotating drum takes the laundry with it in its rotational movement through frictional adhesion and, if necessary, entrainers present in the laundry drum. This generates at least one frequency peak (also referred to as "frequency peak") in the frequency spectrum of the resistance signal at a certain frequency. When the laundry rolls up, its speed changes and the frequency peak or its frequency position shifts in the frequency spectrum. If the position of the frequency peak changes sufficiently over the course of the drying process, it is concluded that a laundry winder is present. This recognition of laundry winders via the frequency spectrum is particularly reliable, robust and precise. This is also due to the fact that the frequency position of the frequency peak (s) is independent of the initial humidity of the laundry, the process air temperature and the water composition (e.g. conductivity, hardness, ).
  • the process can be implemented particularly cost-effectively.
  • the method is suitable for various types of laundry drying devices, including laundry drying devices with a heat pump.
  • the clothes drying device can be a clothes dryer or a combined washing and drying device (“washer-dryer”).
  • the laundry drying device can be a Be circulating air or an exhaust air device.
  • the laundry drying device can have a heat pump.
  • the laundry drying device can be a domestic appliance.
  • the laundry drum can be loaded from the front.
  • the laundry drum can have drivers attached to its inside.
  • the time profile of the electrical resistance or the determined resistance values corresponds in particular to a link between the resistance values and associated, respectively different measurement times.
  • the resistance values can be determined values directly or processed (e.g. smoothed, adjusted for outliers, etc.) values.
  • the time profile of the electrical resistance can also be referred to as a measurement curve or resistance curve.
  • a frequency pattern can also be referred to as a frequency curve or frequency profile.
  • One or more frequency peaks can occur in the frequency spectrum. If several frequency peaks occur in the frequency spectrum, precisely one or more frequency peaks or their frequency positions can be monitored or evaluated.
  • the method further includes that the frequency change is a frequency shift of at least one monitored frequency peak or frequency position, which is at least one predefined variable at least one predefined first threshold value, and a laundry wrapper is then deduced if the frequency shift reaches or exceeds the first threshold value.
  • the first threshold values assigned to the frequency shifts ⁇ fa and ⁇ fb can be the same or different.
  • the at least one frequency peak can also only be monitored for compliance with one of these conditions. When monitoring several frequency peaks, different first threshold values for the frequency shifts ⁇ fa and / or ⁇ fb can be assigned to respective frequency peaks.
  • a laundry winder is inferred if the frequency shift .DELTA.fa and / or .DELTA.fb reaches or exceeds a predefined first threshold value within a predefined period of time.
  • the predefined period of time can be a permanently predefined period of time, which can be referred to, for example, as a (concurrent) monitoring time window.
  • the predetermined period of time can also be a period of time that changes in the course of the drying process, which can be dependent on a drying parameter such as a degree of humidity etc. and / or on a program parameter such as a current remaining drying time etc., for example.
  • the duration can correspond to the total duration of the drying process that has passed so far.
  • the method additionally or alternatively includes that the frequency change is a temporal frequency change of a monitored frequency peak, the predetermined variable is at least one predetermined second threshold value and a laundry wrapper is then deduced if the temporal frequency change reaches or exceeds the predetermined second threshold value.
  • the frequency change is a temporal frequency change of a monitored frequency peak
  • the predetermined variable is at least one predetermined second threshold value
  • a laundry wrapper is then deduced if the temporal frequency change reaches or exceeds the predetermined second threshold value.
  • a laundry winder can be inferred if the frequency change over time ( ⁇ f / ⁇ t) or ⁇ f / ⁇ t reaches or exceeds the predefined second threshold value.
  • second threshold values which are dependent on a direction of the frequency change over time can also be assumed here.
  • the at least one frequency peak can only be monitored for compliance with one of these conditions.
  • the at least one monitored frequency peak comprises a highest frequency peak or frequency position of the highest frequency peak.
  • a frequency peak is particularly easy to find and evaluate.
  • the frequency position can be determined particularly precisely here.
  • the at least one frequency peak can only comprise or be the highest frequency peak, which keeps numerical expenditure low.
  • the highest frequency peak can e.g. be determined by the highest value (amplitude) in the entire frequency pattern or by the highest value in a given frequency section (e.g. a section in which the first frequency peak is to be expected).
  • the at least one monitored frequency peak additionally comprises at least one further frequency peak, e.g. a second highest frequency peak, etc.
  • the selected frequency peaks can alternatively or additionally be determined by their frequency position, e.g. a second highest frequency peak in a range with higher frequencies than the frequency position of the highest frequency peak, etc.
  • the transformation is carried out by means of a real-valued, discrete, linear, orthogonal transformation.
  • the transformation can be, for example, a discrete cosine transformation (DCT) or a discrete Fourier transformation (DFT).
  • DCT discrete cosine transformation
  • DFT discrete Fourier transformation
  • the transformation is carried out by means of a fast Fourier transformation or FFT transformation, which is particularly easy to implement and numerically efficient.
  • the measured values of the electrical resistance can be determined in a basically known manner, for example according to the two methods described at the beginning.
  • the moisture measurement is carried out by applying a rectangular alternating voltage signal to associated measuring electrodes.
  • the measured values are recorded with a constant repetition time or the resistance values are measured with a constant repetition time, e.g. a predetermined number of measured values are recorded per second.
  • the laundry drum is operated at a constant target speed to record the time profile of the electrical resistance. This advantageously enables a particularly sharp position of the frequency peaks and thus a particularly precise detection of the laundry curlers.
  • the laundry drum is driven by means of a brushless direct current motor.
  • a brushless direct current motor This has the advantage that with its help an actual speed of the laundry drum can be kept at or close to the target speed, which enables a particularly sharp position of the frequency peaks and thus a particularly precise determination of a laundry winder with simple means.
  • other motors can also be used to drive the laundry drum, for example a three-phase asynchronous machine or ASM motor.
  • the at least one action comprises a time-controlled change of direction of rotation or a reversing of the laundry drum. In this way, the laundry curlers dissolve again and the laundry items are dried more evenly.
  • the at least one action comprises adapting, in particular lengthening, a remaining running time of a drying process. This makes it possible to compensate for a poorer drying efficiency caused by - possibly occasionally occurring - laundry winders.
  • a remaining running time can in particular be understood to mean a time displayed in a display device of the laundry drying device.
  • the at least one action comprises an adjustment of at least one switching parameter of the drying process.
  • a switching parameter can mean a value of an operating parameter (e.g. a humidity, a temperature, etc.) and / or or at least a predetermined time that influences the program sequence. For example, when a laundry winder is detected - possibly with the same remaining running time - the times or durations of certain program sections and / or temperature settings for certain program sections can be adjusted. In this way, the duration of a heat input program section can be lengthened compared to an anti-crease program section, etc.
  • an operating parameter e.g. a humidity, a temperature, etc.
  • the object is also achieved by a laundry drying device which is set up to carry out the method.
  • the laundry drying device can be designed analogously to the method and has the same advantages.
  • the tumble dryer can be used like an in EP 2 593 601 B1 described laundry drying device, which has also been adapted to carry out the method, for example by a corresponding programming of a data processing device.
  • EP 2 593 601 B1 Features described can also be used for the present laundry drying device.
  • the laundry drying device has for this purpose: a horizontally rotatable laundry drum for receiving laundry to be dried, a resistance measuring device for measuring an electrical resistance of the laundry, which resistance measuring device has at least two measuring electrodes arranged for contact with the laundry, a data processing device coupled to the resistance measuring device for transforming a time Course of the measured electrical resistance values in a frequency pattern, for monitoring or evaluating a temporal sequence or a temporal course of at least one frequency peak in the frequency pattern and for determining or recognizing a laundry winder when a frequency change in a frequency position of the at least one monitored frequency peak is at least one predetermined Size reached.
  • the resistance measuring device can have associated measuring electrodes. These can be arranged, for example, in a bearing plate or in the laundry drum.
  • the measuring electrodes can be two metal strips that are attached parallel to one another on a lower door opening edge in the bearing plate.
  • the laundry drying device in particular its resistance measuring device or its data processing device, can have a voltage generating device for applying a low direct voltage to the measuring electrodes.
  • the voltage generating device can be coupled to the resistance measuring device and / or the data processing device.
  • the laundry drying device in particular its resistance measuring device or its data processing device, can alternatively or additionally have a voltage generating device for applying an - in particular rectangular - alternating voltage signal with, for example, high frequency to the measuring electrodes.
  • the voltage generating device can be coupled to the resistance measuring device and / or the data processing device.
  • the laundry drying device can also have a bridge circuit, eg an H-bridge, over which the resulting measurement signals are passed.
  • the data processing device can be set up to smooth measurement signals or resistance measurement values, e.g. values passed via a bridge circuit, e.g. by means of an outlier test in which a largest and / or a smallest value are not taken into account.
  • the data processing device can also be set up or designed to smooth measurement signals or resistance measurement values by filtering, e.g. Bessel filtering.
  • the laundry drying device can be set up to detect a laundry load in the laundry drum.
  • the data processing device can be set up to recognize a laundry winder as a function of the laundry load.
  • the threshold values can be adapted as a function of the laundry load.
  • the data processing device can be set up to recognize the laundry load from the time profile of the electrical resistance in addition to recognizing a laundry winder. This enables a particularly inexpensive implementation.
  • the data processing device can be an evaluation device or have an evaluation function. It can have a microcontroller, microprocessor, ASIC, FPGA, etc. It can have one or more volatile and / or non-volatile memories, e.g. for storing characteristics, control programs, etc.
  • the data processing device can be a unit or a distributed system.
  • the data processing device can be a control device for operating the laundry drying device, in particular its central control device or control unit.
  • Fig. 1 shows, as a sectional illustration in side view, a laundry drying device 1 with a horizontally rotatable laundry drum 2 for receiving laundry W to be dried (see FIG Figures 2A-2D and Figures 3A-3D ).
  • the laundry drying device 1 also has a resistance measuring device 3 for measuring an electrical resistance of the laundry W, which has two measuring electrodes 4 arranged for contact with the laundry W. Of the resistance measuring device 3, only one measuring electrode 4 is shown here, which is attached to a lower door opening edge in a front end plate 5.
  • the laundry drying device 1 is set up to apply a direct voltage or an alternating voltage to the measuring electrodes 4.
  • the resistance measuring device 3 is connected to a data processing device in the form of a control device 6.
  • the control device 6 can control the operation of the laundry drying device 1 and is used to identify laundry curlers, possibly also to determine the moisture content of the laundry W and / or possibly to determine the laundry load, namely here a determination of the weight of the dry laundry W.
  • the laundry drum 2 there are drivers 7 arranged on the inside parallel to an axis of rotation D of the laundry drum 2.
  • the laundry drum 2 is driven by means of a motor 8, for example by means of a BLDC motor or an ASM motor.
  • the control device 6 is connected to the motor 8 for its operation and can set a target speed nshould be specified.
  • the laundry drying device 1 can be analogous to EP 2 593 601 B1 be constructed, but is now set up as an alternative or in addition to the detection of laundry rollers, for example by a corresponding programming of the control device 6.
  • Fig.2A to Fig.2D show, as a sectional representation in a front view, a laundry drum 2 loaded with laundry W without a laundry winder in several rotational positions rotated in a clockwise direction.
  • the rotating laundry drum 2 takes the laundry W with it in its rotational movement by frictional adhesion and the drivers 7.
  • a “laundry” speed nw of the laundry W corresponds approximately to an actual speed nist of the laundry drum 2, that is to say that nw ⁇ nist applies.
  • Laundry slippage nw - nist is therefore negligibly small. If the drum is not fully loaded, nw> nist applies, so that noticeable laundry slip then occurs.
  • Fig.3A to Fig.3D show analogous to Fig.2A to Fig.2D as a sectional view in front view of a laundry drum 2 loaded with entangled laundry W in several rotational positions rotated clockwise. If the washing drum contains 2 washing machines, it is more compact than without a washing machine. Thus, the contact area between the laundry and the drum decreases. A center of mass of the laundry no longer coincides with the axis of rotation of the drum. Carriers have to move a larger mass and the laundry detaches from the drum earlier and returns to the lower area of the drum. As a result, the path that an item of laundry covers is shorter and the laundry rotates faster. This causes the laundry W to rotate in the laundry drum 2 at a higher laundry speed. The laundry slippage is therefore usually noticeably greater than in the absence of laundry winders.
  • a time profile of an electrical resistance can be recorded via the measuring electrodes 4 by determining several measured values m of the electrical resistance per second for a predetermined period of time, for example using one of the two methods described at the beginning.
  • This time course is transformed into a frequency pattern by the control device 6 by means of a fast Fourier transformation.
  • a sequence of 2 r (with r, for example 6, 7, 8 etc.) measured values [m] is evaluated.
  • the control device 6 By means of the control device 6, at least one frequency peak is identified in the frequency pattern and its frequency position f is stored with an associated time stamp.
  • the time stamp can, for example, be the point in time of the last resistance measurement value m of the associated measurement curve or the sequence of measurement values [m].
  • This results in a time profile [f] of the frequency position f.
  • the control device 6 then monitors this frequency position f or its temporal course [f] for a frequency change and evaluates it for the presence of a laundry winder.
  • Fig. 4 shows, as a plot of an amplitude A in any units against a frequency f in Hz, a frequency pattern transformed from a sequence of measured values [m].
  • the frequency pattern several frequency peaks P1, P2, P3 and P4 occur at frequency positions f1, f2, f3 and f4, respectively, the frequency peak P1 being the highest frequency peak.
  • the frequency peaks P1 to P4 are shown here as discrete lines, they can in principle also have a finite curve width.
  • the control device 6 can use the frequency position f1, f2, f3 and / or f4 of precisely one frequency peak P1 to P4 (in particular the highest frequency peak P1) or several of the frequency peaks P1 to P4 for recognizing laundry winders.
  • Fig. 5 shows, as a plot of a frequency against time, a course [f1] of the frequency position f1 of the highest frequency peak P1 during a drying process.
  • a frequency change in the form of a frequency shift ⁇ f1 of the frequency position (n) f1 in the associated curve [f1] is evaluated, here purely by way of example starting from the first point in time (time stamp) of the entire curve [f1].
  • the frequency shift ⁇ f1 can be evaluated, e.g. starting from a first point in time of a concurrent monitoring time window (not shown), etc.
  • the control device 6 If the value of the frequency shift ⁇ f1 exceeds a predetermined threshold value S, which happens here at a point in time tw, this is recognized by the control device 6 as the presence of a laundry winder. The control device 6 can then reverse a direction of rotation, as a result of which the laundry winder, as can be seen from the again decreasing frequency shift ⁇ f1, is released again. Alternatively or additionally, a remaining drying time of the drying process can be increased in order to achieve a user-set degree of drying particularly reliably.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Claims (10)

  1. Procédé permettant la reconnaissance d'enroulements de linge dans un appareil de traitement du linge (1) avec un tambour à linge (2) apte à tourner horizontalement, dans lequel
    - un déroulement temporel d'une résistance électrique est reçu par le linge (W) qui se trouve dans le tambour à linge (2) lorsque le tambour à linge (2) est en rotation,
    - le déroulement temporel est transformé en un modèle de fréquence (P1-P4),
    - une séquence temporelle d'une position de fréquence (f1) d'au moins un pic de fréquence (P1) du modèle de fréquence (P1-P4) est surveillée et
    - ensuite lorsqu'une modification de fréquence (Δf) de l'au moins une position de fréquence (f1) surveillée atteint au moins une grandeur (S) prédéfinie, il en est déduit un enroulement de linge du linge (W) qui se trouve dans le tambour à linge (2),
    dans lequel
    - la modification de fréquence (Δf) est un déplacement de fréquence, l'au moins une grandeur (S) prédéfinie est au moins une première valeur de seuil prédéfinie et ensuite il en est déduit un enroulement de linge lorsque le déplacement de fréquence (Δf) atteint ou devient supérieur à la première valeur seuil (S) prédéfinie,
    et/ou dans lequel
    - la modification de fréquence est une modification de fréquence temporelle, l'au moins une grandeur prédéfinie est au moins une seconde valeur de seuil prédéfinie et ensuite il en est déduit un enroulement de linge lorsque la modification de fréquence temporelle atteint ou devient supérieure à la seconde valeur de seuil prédéfinie.
  2. Procédé selon la revendication 1, dans lequel l'au moins un pic de fréquence (P1) surveillé comprend ou est un pic de fréquence le plus élevé.
  3. Procédé selon la revendication 2, dans lequel l'au moins un pic de fréquence surveillé comprend en outre au moins un autre pic de fréquence.
  4. Procédé selon l'une quelconque des revendications précédentes, dans lequel la transformation est mise à exécution dans le modèle de fréquence (P1-P4) au moyen d'une transformation FFT.
  5. Procédé selon l'une quelconque des revendications précédentes, dans lequel le déroulement temporel de la résistance électrique est déterminé au moyen d'une création d'un signal à tension alternative rectangulaire au niveau d'électrodes de mesure (4) concernées.
  6. Procédé selon l'une quelconque des revendications précédentes, dans lequel le tambour à linge (2) est mis en service pour la réception du déroulement temporel de la résistance électrique avec un régime théorique constant.
  7. Procédé selon l'une quelconque des revendications précédentes, dans lequel par la suite lorsqu'il en a été déduit un enroulement de linge, au moins une action est déclenchée.
  8. Procédé selon la revendication 7, dans lequel l'au moins une action comprend une inversion du tambour à linge (2).
  9. Procédé selon l'une quelconque des revendications 7 ou 8, dans lequel l'au moins une action comprend une adaptation, en particulier un allongement, d'une durée résiduelle d'un processus de séchage.
  10. Appareil de traitement du linge (1), dans lequel l'appareil de séchage du linge (1) est conçu pour la réalisation du procédé selon l'une quelconque des revendications précédentes et présente à cet effet au moins :
    - un tambour à linge (2) apte à tourner horizontalement pour la réception de linge à sécher (W),
    - un dispositif de mesure de résistance (3) permettant de mesurer une résistance électrique du linge (W), lequel dispositif de mesure de résistance (3) présente au moins deux électrodes de mesure (4) disposées en contact avec le linge et
    - un dispositif de traitement de données (6) couplé au dispositif de mesure de résistance (3) et qui est conçu pour la réalisation du procédé.
EP19155900.4A 2018-02-20 2019-02-07 Détection des enroulements de linge dans les sèche-linge Active EP3527713B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018202527.4A DE102018202527A1 (de) 2018-02-20 2018-02-20 Erkennen von Wäschewicklern in Wäschetrocknungsgeräten

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EP3527713A1 EP3527713A1 (fr) 2019-08-21
EP3527713B1 true EP3527713B1 (fr) 2021-07-07

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CN (1) CN110172809B (fr)
DE (1) DE102018202527A1 (fr)

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JP3340887B2 (ja) * 1995-07-28 2002-11-05 株式会社東芝 衣類乾燥機
JP2006204428A (ja) * 2005-01-26 2006-08-10 Toshiba Corp ドラム式洗濯乾燥機
JP2010051431A (ja) * 2008-08-27 2010-03-11 Panasonic Corp 洗濯機、洗濯物状態判定方法およびプログラム
EP2407590A1 (fr) 2010-07-13 2012-01-18 BSH Bosch und Siemens Hausgeräte GmbH Procédé pour le fonctionnement d'un appareil de séchage de vêtements et appareil de séchage de vêtements
JP2012183142A (ja) * 2011-03-04 2012-09-27 Panasonic Corp 衣類乾燥機
JP2013183899A (ja) * 2012-03-08 2013-09-19 Panasonic Corp 衣類乾燥機
DE102013215675A1 (de) 2013-08-08 2015-02-12 BSH Bosch und Siemens Hausgeräte GmbH Betreiben eines Wäschetrocknungsgeräts mit horizontal drehbarer Wäschetrommel
WO2016085252A1 (fr) * 2014-11-28 2016-06-02 삼성전자주식회사 Séchoir et son procédé de commande

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DE102018202527A1 (de) 2019-08-22
CN110172809A (zh) 2019-08-27
EP3527713A1 (fr) 2019-08-21

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