EP2374924A2 - Procédé destiné au fonctionnement d'un appareil de traitement du linge - Google Patents

Procédé destiné au fonctionnement d'un appareil de traitement du linge Download PDF

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Publication number
EP2374924A2
EP2374924A2 EP11002719A EP11002719A EP2374924A2 EP 2374924 A2 EP2374924 A2 EP 2374924A2 EP 11002719 A EP11002719 A EP 11002719A EP 11002719 A EP11002719 A EP 11002719A EP 2374924 A2 EP2374924 A2 EP 2374924A2
Authority
EP
European Patent Office
Prior art keywords
drum
imbalance
signal
loading opening
unbalance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP11002719A
Other languages
German (de)
English (en)
Other versions
EP2374924A3 (fr
EP2374924B1 (fr
Inventor
Martin Rieser
Martin Weinmann
Hartmut Wauer
Nicola-Valeriu Olarescu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Diehl AKO Stiftung and Co KG
Original Assignee
Diehl AKO Stiftung and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Diehl AKO Stiftung and Co KG filed Critical Diehl AKO Stiftung and Co KG
Publication of EP2374924A2 publication Critical patent/EP2374924A2/fr
Publication of EP2374924A3 publication Critical patent/EP2374924A3/fr
Application granted granted Critical
Publication of EP2374924B1 publication Critical patent/EP2374924B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/12—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a vertical axis
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/16—Imbalance
    • 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
    • D06F2103/26—Imbalance; Noise level
    • 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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/48—Preventing or reducing imbalance or noise

Definitions

  • the present invention relates to a method of operating a laundry treating appliance and to a laundry treating appliance capable of performing such a process.
  • the rotational position of the laundry drum and thus its loading opening must be detectable, so that it can be ensured that the loading opening of the laundry drum for loading or unloading of the device is in the region of a feed opening of the housing.
  • a position detection of the loading opening of the laundry drum can be used to stop the laundry drum targeted.
  • the EP 0 071 308 B1 and the DE 42 21 772 A1 A method of detecting an imbalance in a laundry treating appliance by detecting changes in speed or speed during a phase having a constantly controlled engine speed or within reversing directions of rotation.
  • the WO 95/08663 A1 describes a system and method for detecting imbalance in a laundry treating appliance via pressure generation in specific fluid components coupled to the tub and detection of fluid pressure by actuators coupled to a switch.
  • this object is achieved by a method with the features of claim 1.
  • Advantageous embodiments and further developments of the invention are the subject of the dependent claims 2 to 5.
  • the method for operating a laundry treatment device having a drum for rotating laundry and a loading opening arranged in the peripheral wall of the drum comprises the steps of detecting at least one position signal from which a rotational position of the loading opening of the drum can be derived; detecting an imbalance signal indicative of an imbalance of the drum; determining a phase difference between the position signal and the unbalance signal; and detecting an unbalance of the drum critical to the loading opening of the drum when the phase difference between the position signal and the unbalance signal is within a predetermined range.
  • the position signal indicative of the rotational position of the loading opening of the drum is also used to determine the absolute imbalance position.
  • the unbalance signal caused by an imbalance of the drum has the same frequency as the position signal. From the phase difference between the position signal and the unbalance signal, therefore, the position of the imbalance of the drum can be determined. If this phase difference is in a predetermined range, it can be concluded that the imbalance mass is positioned in the drum in the region of the loading opening of the drum and thus presses against the closure of the loading opening due to the centrifugal forces, ie there is an imbalance critical for the loading opening of the drum.
  • the use of more than one rotary position detection device there are more evaluable position signals that allow a better resolution in determining the imbalance position.
  • phase difference between the position signal and the unbalance signal When evaluating the phase difference between the position signal and the unbalance signal, it should be noted that the zero points of the two signal profiles do not necessarily coincide depending on the design and positioning of the two detection systems. In addition, in the evaluation of this phase difference, of course, the size of the loading opening of the drum to pay attention.
  • a phase difference to be assessed as critical can be, for example, in a value range from about -30 degrees to about +30 degrees or in a value range from about +45 degrees to about +135 degrees.
  • the laundry treatment device can be operated with the aid of the operating method according to the invention with larger imbalances and / or higher rotational speeds, since it can be ensured that the imbalance mass does not press against the closure of the loading opening of the drum.
  • the loading opening or its closure can be made simpler and more cost-effective, since with the operating method according to the invention, large unbalanced loads can be excluded therefrom.
  • the method is advantageously applicable to "laundry treating appliances” such as washing machines, clothes dryers and combined laundry dryers having a laundry drum in which the loading opening is arranged in its peripheral wall. These are usually so-called Toplader laundry treatment equipment, in which the axis of rotation of the drum in Is oriented substantially horizontally.
  • the method according to the invention can also be used in the same way for differently oriented drums as far as vertically extending axes of rotation.
  • the imbalance signal represents a time profile of a torque and / or a rotational speed of the drum.
  • the imbalance signal can be generated, for example, by the control of the electric motor driving the drum itself.
  • all imbalance detection systems can be used for carrying out the method according to the invention, which generate a periodic unbalance signal whose frequency corresponds to that of the position signal for the charging opening.
  • a size or a measure of the unbalance of the drum is detected in addition to the presence and the position of the unbalanced mass in the drum. Then, an unbalance of the drum critical to the loading opening of the drum is detected when the phase difference between the position signal and the unbalance signal is in a predetermined range and at the same time the magnitude of the imbalance of the drum exceeds a predetermined value. That in the case of small imbalance masses, it may not be dangerous if they are positioned in the region of the loading opening of the drum, so that in this case, for example, the spinning process can continue.
  • a rotational speed of the drum is also detected. Then, a critical for the loading opening of the drum imbalance of the drum is detected when the phase difference between the position signal and the unbalance signal in a predetermined range and at the same time the rotational speed of the drum exceeds a predetermined value (and possibly also the size of the imbalance of the drum exceeds predetermined value). At low speeds, it can be harmless if the imbalance mass in the range of Loading opening of the drum is positioned so that in this case, the operation of the laundry treatment device can still be continued.
  • An imbalance of the drum is particularly critical at high speeds, such as occur when spinning.
  • a spin-up run can be aborted and restarted.
  • the laundry treating appliance such as a washing machine, a tumble dryer or a washer dryer, comprises a tumble drum rotatable about an axis of rotation, a loading opening disposed in the peripheral wall of the drum, at least one rotational position detecting means for detecting a rotational position of the loading opening of the drum, an imbalance detecting means for Detecting an imbalance of the drum and a controller for controlling the operation of the laundry treating appliance.
  • the controller is designed such that it can determine a phase difference between at least one position signal of the at least one rotary position detection device and an imbalance signal of the imbalance detection device and can detect a critical for the loading opening of the drum imbalance of the drum when the phase difference between the position signal and the imbalance signal in a predetermined range.
  • This laundry treating appliance is designed in particular for carrying out the operating method described above. This means that the same comments and benefits apply, without them having to be repeated here.
  • the imbalance detection device is designed such that it can detect a time profile of a torque and / or a rotational speed of the drum.
  • controller may be coupled to or include such imbalance quantity detecting means for detecting a magnitude of the imbalance of the drum and / or a rotational speed detecting means for detecting a rotational speed of the drum.
  • FIG. 1 and 2 are the essential components for explaining the invention of a washing machine as an example of a laundry treatment device shown, wherein FIG. 1 shows a situation of an uncritical position of the imbalance mass in the drum and FIG. 2 shows a situation of a critical position of the imbalance mass in the drum.
  • a drum 2 is arranged, which is rotatably mounted about a substantially horizontally extending axis of rotation 3.
  • a generally existing tub is omitted for clarity in the drawings.
  • a loading opening 4 is provided, which is closable and lockable by means of a closure 5 in the form of doors or flaps.
  • a charging opening 6 is provided, which is the loading opening 4 of the drum 2 arranged correspondingly.
  • the loading opening 4 of the drum 2 is substantially in the upper position, as in the Figures 1 and 2 illustrated, the shutter 5 of the loading port 4 can be opened through the charging port 6 through to give laundry in the drum 2 or remove from the drum 2.
  • the drum 2 is driven by an electric motor 7, which is controlled by a controller 8.
  • the controller 8 controls in particular the speed and the direction of rotation of the electric motor 7 depending on the program selection and program progress of the washing machine.
  • the controller 8 is also connected to a position sensor 9 (as a rotational position detecting device of the invention) which outputs a position signal indicative of the rotational position of the loading port 4 of the drum 2.
  • a position sensor 9 for example, a mounted on the drum 2 signal generator and a stationary in the washing machine housing 1 arranged signal receiver, as in the Figures 1 and 2 indicated.
  • the position sensor 9 of the loading port 4 is positioned exactly opposite to the drum 2. Of course, other positioning of the position sensor 9 relative to the loading opening 4 are possible.
  • Reference numeral 10 denotes an imbalance mass in the drum 2 which is generated, for example, by a random uneven laundry distribution in the drum 2 and by the centrifugal forces when the drum 2 is rotated against the drum wall 5 of the loading opening 4 pushes outwards. These imbalance loads increase with increasing imbalance mass and higher speeds. In particular, in the area of the loading opening 4 of the drum 2, this can lead to critical loads.
  • the washing machine is therefore operated by the controller 8 as follows.
  • the position sensor 9 With the position sensor 9, the position of the loading opening 4 of the drum 2 is constantly detected. As a result, the position sensor 9 outputs to the controller 8 a position signal having a constant frequency at constant speed control of the electric motor 7 by the controller 8. In addition, the loading port 4 of the drum 2 can be rotated from this information at the end of the washing program to the desired position corresponding to the charging port 6 in the housing wall 1 of the washing machine.
  • the controller 8 is configured to detect a torque or a rotational speed of the drum 2 (imbalance detection device of the invention).
  • the corresponding unbalance signal shows even with a constant speed control of the electric motor 7 torque or rotational speed fluctuations.
  • the frequency of these fluctuations in the unbalance signal corresponds to the frequency of the position signal.
  • the controller 8 can then calculate the position of the imbalance mass 10 in the drum 2 relative to the loading port 4.
  • the zero point positions of the two signals are taken into account, which need not necessarily coincide in time.
  • the imbalance mass 10 is located in the region of the loading opening 4 of the drum (see. FIG. 2 ), ie, the phase difference between the position signal and the unbalance signal in a predetermined range of values, which is determined by the size of the loading port 4 and on the other hand by the phase difference between the zero points of the two signals, so for example, a spin startup can be stopped and restarted ,
  • the controller 8 determines that the phase difference is outside the predetermined range, that is, the imbalance mass 10 does not press against the shutter 5 of the loading opening 4 of the drum 2 (see FIG. FIG. 1 ), so is the imbalance mass 10 for the loading port 4 to be regarded as uncritical and the spinning process can be continued.
  • more than one position sensor 9 for deriving the rotational position of the loading opening 4 of a drum 2 can be used.
  • the above description of the embodiment applies analogously to the case that more than one position sensor 9 is used.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
EP11002719.0A 2010-04-06 2011-04-01 Procédé destiné au fonctionnement d'un appareil de traitement du linge Not-in-force EP2374924B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010013933A DE102010013933B4 (de) 2010-04-06 2010-04-06 Verfahren zum Betrieb eines Wäschebehandlungsgerätes

Publications (3)

Publication Number Publication Date
EP2374924A2 true EP2374924A2 (fr) 2011-10-12
EP2374924A3 EP2374924A3 (fr) 2012-08-08
EP2374924B1 EP2374924B1 (fr) 2015-11-11

Family

ID=44315205

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11002719.0A Not-in-force EP2374924B1 (fr) 2010-04-06 2011-04-01 Procédé destiné au fonctionnement d'un appareil de traitement du linge

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EP (1) EP2374924B1 (fr)
DE (1) DE102010013933B4 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0071308B1 (fr) 1981-07-31 1986-05-14 Philips Electronics Uk Limited Système de régulation de la vitesse de rotation du tambour pour machine à laver
DE4221772A1 (de) 1992-07-02 1994-01-05 Licentia Gmbh Verfahren zur Unwuchterkennung in Haushalt-Waschmaschinen
WO1995008663A1 (fr) 1993-09-20 1995-03-30 General Electric Company Systeme et procede de detection et d'interruption lors d'un etat de desequilibre dans un lave-linge
DE10242854B3 (de) 2002-09-14 2004-07-01 Diehl Ako Stiftung & Co. Kg Verfahren zum gezielten Anhalten der Beschickungsöffnung in der Waschtrommel einer Toplader-Waschmaschine
DE102006036133B3 (de) 2006-08-01 2007-09-06 Miele & Cie. Kg Mantelbeschickbare Waschmaschine bzw. Toplader-Waschmaschine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8718047U1 (de) * 1987-12-22 1993-01-21 Bosch-Siemens Hausgeräte GmbH, 8000 München Wäschetrommel für eine Wasch- und Schleudermaschine
FR2656010B1 (fr) * 1989-12-15 1992-02-28 Ciapem Procede d'arret d'un tambour d'un lave-linge mettant le portillon du tambour en vis-a-vis de la porte du lave-linge et lave-linge mettant en óoeuvre un tel procede.
IT1282416B1 (it) * 1995-04-06 1998-03-23 Zanussi Elettrodomestici Lavabiancheria a carica dall'alto con mezzi perfezionati anti-sbilanciamento

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0071308B1 (fr) 1981-07-31 1986-05-14 Philips Electronics Uk Limited Système de régulation de la vitesse de rotation du tambour pour machine à laver
DE4221772A1 (de) 1992-07-02 1994-01-05 Licentia Gmbh Verfahren zur Unwuchterkennung in Haushalt-Waschmaschinen
WO1995008663A1 (fr) 1993-09-20 1995-03-30 General Electric Company Systeme et procede de detection et d'interruption lors d'un etat de desequilibre dans un lave-linge
DE10242854B3 (de) 2002-09-14 2004-07-01 Diehl Ako Stiftung & Co. Kg Verfahren zum gezielten Anhalten der Beschickungsöffnung in der Waschtrommel einer Toplader-Waschmaschine
DE102006036133B3 (de) 2006-08-01 2007-09-06 Miele & Cie. Kg Mantelbeschickbare Waschmaschine bzw. Toplader-Waschmaschine

Also Published As

Publication number Publication date
EP2374924A3 (fr) 2012-08-08
EP2374924B1 (fr) 2015-11-11
DE102010013933B4 (de) 2011-11-24
DE102010013933A1 (de) 2011-10-06

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