EP1111117B2 - Method for positioning a washing machine drum in a target position - Google Patents
Method for positioning a washing machine drum in a target position Download PDFInfo
- Publication number
- EP1111117B2 EP1111117B2 EP99125728A EP99125728A EP1111117B2 EP 1111117 B2 EP1111117 B2 EP 1111117B2 EP 99125728 A EP99125728 A EP 99125728A EP 99125728 A EP99125728 A EP 99125728A EP 1111117 B2 EP1111117 B2 EP 1111117B2
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- EP
- European Patent Office
- Prior art keywords
- washing drum
- motor
- washing
- switch
- target position
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- 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.)
- Expired - Lifetime
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- 238000005406 washing Methods 0.000 title claims description 121
- 238000000034 method Methods 0.000 title claims description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000013461 design Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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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
- D06F37/30—Driving arrangements
- D06F37/302—Automatic drum positioning
-
- 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
- D06F34/20—Parameters relating to constructional components, e.g. door sensors
Definitions
- the invention relates to a method for positioning a drivable by a motor washing drum of a washing machine in a target position according to the preamble of claim 1.
- the washing drum In coat drum drum washing machines, the washing drum has a loading and unloading, which must stand for loading and unloading in a target position relative to a closable with a lid opening of the washing machine housing. It does not matter that in the target position, the loading and unloading of the washing drum is exactly below the opening of the washing machine housing. It is sufficient if the loading and unloading opening of the washing drum is partially visible and accessible at a standstill through the opening of the washing machine housing.
- a position sensor provides output signals on the respective position of the loading and unloading, from which then corresponding switching pulses are derived for the motor of the washing drum.
- the motor is operated reversing until the laundry of the loading and unloading has positioned opposite the lowest point of the washing drum. In this condition, the washing drum is stopped.
- a similar procedure is in the EP 0 433 157 A1 described. There, the elimination of the generally existing imbalance is described. The motor of the washing drum is stopped when the loading opening is opposite the opening of the washing machine.
- the object of the invention is therefore to propose a method of the type mentioned, with which the washing drum can bring in a technically simple manner and reliably in the target position.
- the drive phase certain rotational ratios of the washing drum are created before switching off the engine.
- the drive phase may connect to a spin phase or wash phase of the washing machine program.
- the drive phase comprises a few full revolutions of the washing drum and is terminated when the washing drum passes through a predetermined stop position detected by the position sensor. Thereafter, the washing drum rotates then despite the engine off and inevitably due to the resulting moment from the inertia of the system washing drum and laundry and / or from the torque of the system washing drum and laundry and / or from the forces of moving in the washing drum laundry items to the target position further.
- the suitable switch-off position is determined empirically once for the respective washing machine type and optimized if necessary. It has been found that it can be maintained thereafter regardless of the type of laundry and the laundry load.
- the described method can be performed in a technically simple manner, because a simple washing machine with a washing drum and with a motor that is electrically or electronically controlled, only additionally requires a position sensor, the match or disagreement of a current wash drum position with a compares predetermined position.
- the position sensor can switch off via an electronic engine control or directly the engine.
- the method does not require that the motor is regulated. It can also be used in an unregulated washing machine motor, for example asynchronous motor.
- the method also does not require that the motor controller include a microprocessor since it is simple in design and does not need to capture and process a variety of parameters.
- a predetermined synchronizing position of the washing drum is detected by the position sensor during the drive phase and reported to the controller, wherein in further driven by the motor washing drum shutdown position is reached after a predetermined time after passing through the synchronization position.
- the shut-off is offset by a certain angle on the circumference of the washing drum with respect to the synchronizing position.
- the position sensor does not have to be arranged at the shutdown position. It can be arranged at a structurally favorable location.
- the motor for example for speed control, has a tachogenerator, that the switch-off after a certain number of tachometer pulses of the tachogenerator after passing through the synchronization position of the washing drum is achieved.
- the position sensor or another position sensor if the washing drum is in the target position, and if this is not the case, again a drive phase to the same or a changed shutdown position is initiated.
- the shutdown position is changed in the direction of rotation of the washing drum when the target position has not been reached, and changed against the direction of rotation of the washing drum when the target position was reached, but was abandoned again. In the latter case, the washing drum has been rotated beyond the target position.
- the amount of change of the angle for the shut-off position in the engine rotation direction is smaller than the amount of the allowable angle to the target position.
- the amount of change in the angle for the shutdown position against the direction of engine rotation is about as large as the amount of the allowable angle to the target position.
- a rinse-stop function In program controls of washing machines, a rinse-stop function is often provided. In the rinse-stop function, the laundry is in the water in contrast to the normal shut-off position of the program. In order to bring the washing drum in the target position in the Spülstop function, so that in this position laundry can be removed, a further shutdown position is predetermined, after which the washing drum continues to rotate to the target position. So there are two different shut-off positions are predetermined, one is active when the water is pumped out, and the other is active when the water is in the washing drum. With the same shutdown would not be achieved that the washing drum comes with both water filling and without water filling in the target position.
- a washing drum 2 is rotatably mounted about a horizontal axis 3.
- the washing drum 2 has on its circumference or its coat on a loading and unloading 4, which can be closed in the usual way with flaps 5.
- the washing machine housing 1 is provided at the top with an opening 6 which can be covered by means of a cover, not shown.
- a motor 7 For driving the washing drum 2, a motor 7 is provided, which is switchable by a control device 8, for example, an electronic control system.
- a control device 8 for example, an electronic control system.
- On the control electronics 8 acts a conventional, not shown program control and a position sensor 9, which comprises a circulating with the washing drum 2 functional part 10 and a washing drum 2 against non-rotatable functional part 11.
- a drive phase is initiated, in which the motor 7 drives the washing drum 2 at least for a few full revolutions with a fixed, constant angular velocity or speed. This speed is less than a spin speed and preferably as large or smaller than a conventional washing speed.
- the laundry is held within the drum each on the ascending side of the drum inner wall by frictional forces or positive engagement and lifted to some point against gravity, after which it falls down again in the washing drum 2.
- the inertia component resulting from the rotational movement continues to act during the fall time of the wash.
- the position sensor 9 detects the in FIG. 1 shown position of the washing drum 2 as a synchronizing position. Thereafter, the washing drum 2 from the motor 7 evenly - as before - further rotated during a residual rotation time TR, which corresponds to an angle aR and is stored in the control device 8. After the remaining rotation time TR, the washing drum 2 is in a shut-off position, which in FIG. 2 is shown and seen in the direction of rotation D of the washing drum 2 before the target position (see. FIG. 3 ) lies.
- the switch-off position or the remaining rotation time TR or the residual rotation angle aR is predetermined so that the loaded washing drum 2 after reaching the switch-off, ie the switching off of the motor 7 normally enough rotational energy remains just to the target position (see. FIG. 3 ) to reach.
- the correct location of the shutdown position determined empirically for a type of washing machine depends on the resulting torque from the inertia of the drum-laundry system and / or the torque exerted on the drum by unevenly distributed laundry and / or forces inherent in the drum the drum moving laundry be applied to the drum.
- the switch-off can also be achieved in that after a certain number nR of tachometer pulses of a tachogenerator of the motor 7 is reached.
- the number of tacho pulses nR will be predetermined so that after passing through the synchronizing after a number of tachometer pulses, the motor 7 is turned off when the shutdown position (see. FIG. 2 ) is reached.
- the achievement of the target position can be checked with the position sensor 9. Detects the position sensor 9 that after switching off the motor 7, the target position after further rotation of the washing drum 2 without drive by the motor 7 was not reached by the angle aW, then he can initiate a repeated drive phase via the control device 8 to the target position to achieve one or more further attempts.
- the position sensor 9 it is also possible to arrange the position sensor 9 directly at the shut-off position.
- the remaining rotation time TR or the angle aR are zero.
- the position sensor 9 thus triggers the switching off of the motor 7 without delay.
- Two or more shut-off positions may also be stored in the control device 8 by corresponding determinations of remaining rotational times TR or residual rotational angles aR, whereby different shut-off positions may be defined if the washing drum 2 is water-laden (rinse-stop function) or not water-laden (normal program-end function). to come to the target position.
- the shutdown position in its angular position relative to the target position, if the target position in the first attempt to reach them, was not reached.
- the shut-off position can be changed in the direction of rotation D of the washing drum 2, if the target position was not reached on the first attempt to reach it.
- the shut-off position can be adjusted counter to the direction of rotation D of the washing drum 2, when the target position in the first attempt to reach them, although has been achieved, but the washing drum 2 leaves this again without motor drive, i. overruns.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Control Of Washing Machine And Dryer (AREA)
Description
Die Erfindung betrifft ein Verfahren zum Positionieren einer von einem Motor antreibbaren Waschtrommel einer Waschmaschine in einer Zielposition nach dem Oberbegriff von Patentanspruch 1.The invention relates to a method for positioning a drivable by a motor washing drum of a washing machine in a target position according to the preamble of claim 1.
Bei mantelbeschickbaren Trommelwaschmaschinen hat die Waschtrommel eine Be- und Entladeöffnung, die zum Be- und Entladen in einer Zielposition gegenüber einer mit einem Deckel verschließbaren Öffnung des Waschmaschinengehäuses stehen muß. Es kommt dabei nicht darauf an, daß in der Zielposition die Be- und Entladeöffnung der Waschtrommel exakt unter der Öffnung des Waschmaschinengehäuses steht. Es genügt, wenn die Be- und Entladungsöffnung der Waschtrommel im Stillstand teilweise durch die Öffnung des Waschmaschinengehäuses sichtbar und erreichbar ist.In coat drum drum washing machines, the washing drum has a loading and unloading, which must stand for loading and unloading in a target position relative to a closable with a lid opening of the washing machine housing. It does not matter that in the target position, the loading and unloading of the washing drum is exactly below the opening of the washing machine housing. It is sufficient if the loading and unloading opening of the washing drum is partially visible and accessible at a standstill through the opening of the washing machine housing.
In der
In der
Bei der
Nach der
Bei den vorgenannten Verfahren der Positionierung der Waschtrommel nach dem Stand der Technik wird jeweils versucht, die Zielposition aktiv unter Verwendung des Motors zu erreichen. Erst bei Erreichen der Zielposition wird der Motor abgeschaltet.In the aforementioned methods of positioning the washing drum according to the prior art, it is always attempted to actively reach the target position using the motor. Only when reaching the target position, the engine is switched off.
Führt ein erster Versuch, die Zielposition zu erreichen, nicht zum Erfolg, dann wird der Versuch wiederholt. Untersuchungen haben gezeigt, daß mit einer vertretbaren Anzahl von Versuchen, beispielsweise sechs bis zehn Versuchen, nur eine Erfolgsquote von durchschnittlich etwa 90 % erreichbar ist. Dies bedeutet, daß in etwa 10 % der Fälle die Positionierversuche erfolglos abgebrochen und das Programm beendet werden muß, ohne daß die Waschtrommel in der Zielposition positioniert ist.If a first attempt to reach the target position does not succeed, the attempt is repeated. Investigations have shown that with a reasonable number of tests, for example six to ten experiments, only a success rate of about 90% on average is achievable. This means that in about 10% of cases, the positioning attempts must be terminated unsuccessfully and the program must be terminated, without the washing drum is positioned in the target position.
Aufgabe der Erfindung ist es deshalb, ein Verfahren der eingangs genannten Art vorzuschlagen, mit dem sich die Waschtrommel auf technisch einfache Weise und zuverlässig in die Zielposition bringen läßt.The object of the invention is therefore to propose a method of the type mentioned, with which the washing drum can bring in a technically simple manner and reliably in the target position.
Erfindungsgemäß ist obige Aufgabe durch die Merkmale des Patentanspruches 1 gelöst. Vorteilhafte Weiterbildungen und Ausgestaltungen sind in den Unteransprüchen beschrieben.According to the above object is achieved by the features of claim 1. Advantageous developments and refinements are described in the subclaims.
Durch die Antriebsphase werden bestimmte Drehverhältnisse der Waschtrommel vor dem Abschalten des Motors geschaffen. Die Antriebsphase kann an eine Schleuderphase oder Waschphase des Waschmaschinenprogramms anschließen. Die Antriebsphase umfaßt einige Vollumdrehungen der Waschtrommel und wird beendet, wenn die Waschtrommel eine vorbestimmte, vom Positionssensor erfaßte Abschaltposition durchläuft. Danach dreht dann die Waschtrommel trotz abgeschaltetem Motor zwangsläufig und aufgrund des resultierenden Momentes aus der Massenträgheit des Systems Waschtrommel und Wäsche und/oder aus dem Drehmoment des Systems Waschtrommel und Wäsche und/oder aus den Kräften der sich in der Waschtrommel bewegenden Wäschestücke bis in die Zielposition weiter.The drive phase certain rotational ratios of the washing drum are created before switching off the engine. The drive phase may connect to a spin phase or wash phase of the washing machine program. The drive phase comprises a few full revolutions of the washing drum and is terminated when the washing drum passes through a predetermined stop position detected by the position sensor. Thereafter, the washing drum rotates then despite the engine off and inevitably due to the resulting moment from the inertia of the system washing drum and laundry and / or from the torque of the system washing drum and laundry and / or from the forces of moving in the washing drum laundry items to the target position further.
Die richtige Lage der Abschaltposition bezogen auf die Zielposition hängt von folgenden, detailliert beschriebenen Faktoren ab:
- a) Die in der Antriebsphase verwendete Motordrehzahl bestimmt das Trägheitsmoment des Systems Waschtrommel - Waschgut im Moment des Abschaltens des Motors;
- b) die geometrische Gestaltung der Waschtrommel, wie Trommeldurchmesser, Lage und Größe der die Wäsche mitnehmenden Wenderippen, bestimmt die von der Wäsche auf die Waschtrommel ausgeübten Kräfte, wobei diese Kräfte dadurch entstehen, daß die Wäsche in der Waschtrommel angehoben wird und dann in ihr herabfällt;
- c) die innere Reibung des Antriebssystems und das auf die freilaufende Trommel wirkende Bremsmoment bestimmt den Bremsweg der Waschtrommel bis zum Stillstand in der Zielposition.
- (a) the engine speed used in the propulsion phase determines the moment of inertia of the washer-washing system at the time the engine is switched off;
- b) the geometric design of the washing drum, such as drum diameter, position and size of the laundry entraining Wenderippen determines the forces exerted by the laundry on the washing drum forces, these forces arise in that the laundry is raised in the washing drum and then falls into it ;
- c) the internal friction of the drive system and the braking torque acting on the free-running drum determines the braking distance of the washing drum to a standstill in the target position.
Die geeignete Abschaltposition wird für den jeweiligen Waschmaschinentyp einmal empirisch ermittelt und nötigenfalls optimiert. Es hat sich gezeigt, daß sie danach unabhängig von der Wäscheart und der Wäsche-Füllmenge beibehalten werden kann.The suitable switch-off position is determined empirically once for the respective washing machine type and optimized if necessary. It has been found that it can be maintained thereafter regardless of the type of laundry and the laundry load.
Das beschriebene Verfahren läßt sich auf technisch einfache Weise durchführen, weil eine einfache Waschmaschine mit einer Waschtrommel und mit einem Motor, der elektrisch oder elektronisch angesteuert ist, lediglich zusätzlich einen Positionssensor benötigt, der die Übereinstimmung oder Nichtübereinstimmung einer aktuellen Waschtrommelposition mit einer vorbestimmten Position vergleicht. Der Positionssensor kann über eine elektronische Motorsteuerung oder direkt den Motor abschalten.The described method can be performed in a technically simple manner, because a simple washing machine with a washing drum and with a motor that is electrically or electronically controlled, only additionally requires a position sensor, the match or disagreement of a current wash drum position with a compares predetermined position. The position sensor can switch off via an electronic engine control or directly the engine.
Das Verfahren setzt nicht voraus, daß der Motor geregelt ist. Es läßt sich auch bei einem ungeregelten Waschmaschinenmotor, beispielsweise Asynchronmotor, einsetzen. Das Verfahren setzt auch nicht voraus, daß die Motorsteuerung einen Mikroprozessor beinhaltet, da es einfach gestaltet ist und nicht eine Vielzahl von Parametern erfaßt und verarbeitet werden müssen.The method does not require that the motor is regulated. It can also be used in an unregulated washing machine motor, for example asynchronous motor. The method also does not require that the motor controller include a microprocessor since it is simple in design and does not need to capture and process a variety of parameters.
Versuche haben gezeigt, daß bei richtiger Wahl der Abschaltposition die Zielposition schon beim ersten Versuch, sie zu erreichen, in etwa 95 % der Fälle erreicht wird. Die Zielposition wird also zuverlässig angefahren, wobei es, wie eingangs ausgeführt, nicht notwendig ist, daß in der Zielposition die Be- und Entladeöffnung direkt senkrecht unter der Öffnung des Waschmaschinengehäuses steht. Es genügt, wenn in der Zielposition die Be- und Entladeöffnung der Waschtrommel ganz oder teilweise durch die Öffnung des Waschmaschinengehäuses sichtbar und manuell erreichbar ist.Experiments have shown that if the switch-off position is selected correctly, the target position is reached in the first attempt to reach it in about 95% of the cases. The target position is therefore approached reliably, and it is, as stated above, not necessary that in the target position, the loading and unloading is directly vertically below the opening of the washing machine housing. It is sufficient if, in the target position, the loading and unloading opening of the washing drum is visible and manually reachable completely or partially through the opening of the washing machine housing.
In Ausgestaltung der Erfindung wird vom Positionssensor während der Antriebsphase eine vorbestimmte Synchronisierposition der Waschtrommel erfaßt und an die Steuerung gemeldet, wobei bei weiter vom Motor angetriebener Waschtrommel die Abschaltposition nach einer vorbestimmten Zeit nach Durchlauf der Synchronisierposition erreicht wird. In diesem Fall liegt die Abschaltposition um einen bestimmten Winkel am Umfang der Waschtrommel gegenüber der Synchronisierposition versetzt. Der Positionssensor muß dabei nicht bei der Abschaltposition angeordnet sein. Er kann an einer bautechnisch günstigen Stelle angeordnet sein.In an embodiment of the invention, a predetermined synchronizing position of the washing drum is detected by the position sensor during the drive phase and reported to the controller, wherein in further driven by the motor washing drum shutdown position is reached after a predetermined time after passing through the synchronization position. In this case, the shut-off is offset by a certain angle on the circumference of the washing drum with respect to the synchronizing position. The position sensor does not have to be arranged at the shutdown position. It can be arranged at a structurally favorable location.
Alternativ hierzu kann vorgesehen sein, wenn der Motor, beispielsweise zur Drehzahlregelung, einen Tachogenerator aufweist, daß die Abschaltposition nach einer bestimmten Anzahl von Tachoimpulsen des Tachogenerators nach dem Durchlauf der Synchronisierposition der Waschtrommel erreicht wird.Alternatively, it can be provided if the motor, for example for speed control, has a tachogenerator, that the switch-off after a certain number of tachometer pulses of the tachogenerator after passing through the synchronization position of the washing drum is achieved.
Falls die gegebene Wahrscheinlichkeit des Erreichens der Zielposition beim ersten Positionierversuch nicht genügt, kann von dem Positionssensor oder einem weiteren Positionssensor erfaßt werden, ob die Waschtrommel in der Zielposition steht, und daß dann, wenn dies nicht der Fall, erneut eine Antriebsphase auf die gleiche oder eine geänderte Abschaltposition eingeleitet wird. Vorzugsweise wird dabei die Abschaltposition in Drehrichtung der Waschtrommel verändert, wenn die Zielposition nicht erreicht wurde, und entgegen der Drehrichtung der Waschtrommel verändert, wenn die Zielposition zwar erreicht war, aber wieder verlassen wurde. Im letzteren Fall ist die Waschtrommel über die Zielposition hinaus gedreht worden. Dabei ist festzuhalten, daß der Betrag der Änderung des Winkels für die Abschaltposition in Motordrehrichtung kleiner als der Betrag des zulässigen Winkels bis in die Zielposition ist. Dagegen ist der Betrag der Änderung des Winkels für die Abschaltposition entgegen der Motordrehrichtung etwa so groß wie der Betrag des zulässigen Winkels bis in die Zielposition.If the given probability of reaching the target position in the first positioning attempt is not sufficient, it can be detected by the position sensor or another position sensor, if the washing drum is in the target position, and if this is not the case, again a drive phase to the same or a changed shutdown position is initiated. Preferably, while the shutdown position is changed in the direction of rotation of the washing drum when the target position has not been reached, and changed against the direction of rotation of the washing drum when the target position was reached, but was abandoned again. In the latter case, the washing drum has been rotated beyond the target position. It should be noted that the amount of change of the angle for the shut-off position in the engine rotation direction is smaller than the amount of the allowable angle to the target position. In contrast, the amount of change in the angle for the shutdown position against the direction of engine rotation is about as large as the amount of the allowable angle to the target position.
Bei Programmsteuerungen von Waschmaschinen ist oft eine Spülstop-Funktion vorgesehen. In der Spülstop-Funktion liegt das Waschgut im Gegensatz zur normalen Abschaltposition des Programms im Wasser. Um auch in der Spülstop-Funktion die Waschtrommel in die Zielposition zu bringen, damit in dieser Position Waschgut entnommen werden kann, wird eine weitere Abschaltposition vorbestimmt, nach der die Waschtrommel in die Zielposition weiterdreht. Es sind also zwei verschiedene Abschaltpositionen vorbestimmt, wobei die eine aktiv ist, wenn das Wasser abgepumpt ist, und die andere aktiv ist, wenn das Wasser in der Waschtrommel steht. Mit der gleichen Abschaltposition wäre nicht zu erreichen, daß die Waschtrommel sowohl mit Wasserfüllung als auch ohne Wasserfüllung in die Zielposition kommt.In program controls of washing machines, a rinse-stop function is often provided. In the rinse-stop function, the laundry is in the water in contrast to the normal shut-off position of the program. In order to bring the washing drum in the target position in the Spülstop function, so that in this position laundry can be removed, a further shutdown position is predetermined, after which the washing drum continues to rotate to the target position. So there are two different shut-off positions are predetermined, one is active when the water is pumped out, and the other is active when the water is in the washing drum. With the same shutdown would not be achieved that the washing drum comes with both water filling and without water filling in the target position.
Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus der folgenden Beschreibung eines Ausführungsbeispiels. In der Zeichnung zeigen:
- Figur 1
- schematisch eine Waschmaschine mit einer mantelbeschickbaren Waschtrommel,
- Figur 2
- die Waschtrommel in Abschaltposition und
- Figur 3
- die Waschtrommel in einer Zielposition.
- FIG. 1
- schematically a washing machine with a coat-loadable washing drum,
- FIG. 2
- the washing drum in shutdown position and
- FIG. 3
- the washing drum in a target position.
In einem Waschmaschinengehäuse 1 ist eine Waschtrommel 2 um eine horizontale Achse 3 drehbar gelagert. Die Waschtrommel 2 weist an ihrem Umfang bzw. ihrem Mantel eine Be- und Entladeöffnung 4 auf, die in üblicher Weise mit Klappen 5 verschließbar ist. Das Waschmaschinengehäuse 1 ist oben mit einer Öffnung 6 versehen, die mittels eines nicht näher dargestellten Deckels abdeckbar ist.In a washing machine housing 1, a washing drum 2 is rotatably mounted about a horizontal axis 3. The washing drum 2 has on its circumference or its coat on a loading and unloading 4, which can be closed in the usual way with flaps 5. The washing machine housing 1 is provided at the top with an
Zum Antrieb der Waschtrommel 2 ist ein Motor 7 vorgesehen, der von einer Steuereinrichtung 8, beispielsweise einer Steuerelektronik, schaltbar ist. Auf die Steuerelektronik 8 wirkt eine übliche, nicht näher dargestellte Programmsteuerung und ein Positionssensor 9, der ein mit der Waschtrommel 2 umlaufendes Funktionsteil 10 und ein der Waschtrommel 2 gegenüber drehfestes Funktionsteil 11 umfaßt.For driving the washing drum 2, a motor 7 is provided, which is switchable by a
Bei der in den
Um die Waschtrommel 2 in die Zielposition (vgl.
Nach dem üblichen Waschverfahren mit Waschgängen, Spülgängen und Schleudergängen, wird eine Antriebsphase eingeleitet, in der der Motor 7 die Waschtrommel 2 wenigstens für einige Vollumdrehungen mit festgelegter, konstanter Winkelgeschwindigkeit bzw. Drehzahl antreibt. Diese Drehzahl ist kleiner als eine Schleuderdrehzahl und vorzugsweise ebenso groß oder kleiner als eine übliche Waschdrehzahl. In der Antriebsphase wird das Waschgut innerhalb der Trommel jeweils an der aufsteigenden Seite der Trommelinnenwand durch Reibungskräfte oder Formschluß festgehalten und bis zu einem gewissen Punkt entgegen der Schwerkraft hochgehoben, wonach es in der Waschtrommel 2 wieder nach unten fällt. Die aus der Drehbewegung resultierende Trägheitskomponente wirkt während der Fallzeit der Wäsche weiter.After the usual washing procedure with Washes, rinses and spin cycles, a drive phase is initiated, in which the motor 7 drives the washing drum 2 at least for a few full revolutions with a fixed, constant angular velocity or speed. This speed is less than a spin speed and preferably as large or smaller than a conventional washing speed. In the drive phase, the laundry is held within the drum each on the ascending side of the drum inner wall by frictional forces or positive engagement and lifted to some point against gravity, after which it falls down again in the washing drum 2. The inertia component resulting from the rotational movement continues to act during the fall time of the wash.
Nach einigen Vollumdrehungen der Waschtrommel 2 erfaßt der Positionssensor 9 die in
Die Abschaltposition bzw. die Restdrehzeit TR bzw. der Restdrehwinkel aR ist so vorbestimmt, daß der beladenen Waschtrommel 2 nach Erreichen der Abschaltposition, d.h. dem Abschalten des Motors 7 im Normalfall genügend Drehenergie bleibt, um gerade die Zielposition (vgl.
Nach Erreichen der Abschaltposition (vgl.
Nach Durchlauf der Waschtrommel 2 durch die Synchronisierposition (vgl.
Bei der beschriebenen Anordnung des Positionssensors 9 ist mit dem Positionssensor 9 auch das Erreichen der Zielposition überprüfbar. Erkennt der Positionssensor 9, daß nach dem Abschalten des Motors 7 die Zielposition nach dem Weiterdrehen der Waschtrommel 2 ohne Antrieb durch den Motor 7 um den Winkel aW nicht erreicht wurde, dann kann er über die Steuereinrichtung 8 eine wiederholte Antriebsphase einleiten, um die Zielposition bei einem oder mehreren weiteren Versuchen zu erreichen.In the described arrangement of the
Es ist auch möglich, den Positionssensor 9 direkt bei der Abschaltposition anzuordnen. Die Restdrehzeit TR bzw. der Winkel aR sind dabei Null. Der Positionssensor 9 löst also das Abschalten des Motors 7 ohne Verzögerung aus.It is also possible to arrange the
Es können in der Steuereinrichtung 8 auch zwei oder mehrere Abschaltpositionen durch entsprechende Bestimmungen von Restdrehzeiten TR bzw. Restdrehwinkeln aR gespeichert sein, wobei unterschiedliche Abschaltpositionen definiert werden können, wenn die Waschtrommel 2 wasserbeladen (Spülstop-Funktion) oder nicht wasserbeladen (normale Programmende-Funktion) in die Zielposition kommen soll.Two or more shut-off positions may also be stored in the
Es ist auch möglich, über die Steuereinrichtung 8 die Abschaltposition in ihrer Winkellage bezogen auf die Zielposition zu ändern, falls die Zielposition beim ersten Versuch sie zu erreichen, nicht erreicht wurde. Die Abschaltposition läßt sich in Richtung der Drehrichtung D der Waschtrommel 2 verändern, falls die Zielposition beim ersten Versuch sie zu erreichen, nicht erreicht wurde. Die Abschaltposition läßt sich entgegen der Drehrichtung D der Waschtrommel 2 verstellen, wenn die Zielposition beim ersten Versuch sie zu erreichen, zwar erreicht wurde, die Waschtrommel 2 jedoch diese ohne motorischen Antrieb wieder verläßt, d.h. überfährt.It is also possible to change via the
Claims (10)
- Method of positioning a motor-driven washing drum (2) of a washing machine in a target position, in which case in said target position a loading and unloading opening (4) formed in the outer surface of the washing drum (2) lies opposite the loading and unloading opening (6) in the washing machine housing (1) and the motor (7) is controlled by a control device (8) activated by a position sensor (9) for detecting the position of the washing drum,
characterized in that,
in a drive phase comprising several complete revolutions of the washing drum (2), the washing drum (2) is set rotating at a predetermined, constant angular velocity by the motor (7),
in that the motor (7) is then switched off in a predetermined switch-off position of the washing drum (2) and the washing drum (2) carries on rotating,
in that the switch-off position is predetermined in such a way that, on account of the ensuing moment of inertia of the system comprising laundry and washing drum (2) and/or the torque of the system comprising laundry and washing drum (2) and/or the forces of the articles of laundry moving within said washing drum (2) and without motor drive, the washing drum (2) carries on rotating until it reaches or almost reaches the target position and stops there,
and in that it is determined by the position sensor or by an additional position sensor (9) whether the washing drum (2) is in the target position and that then, if this is not the case, an additional drive phase is initiated, comprising several complete revolutions of the washing drum (2), in which the motor (7) sets the washing drum (2) rotating at a predetermined, constant angular velocity until it reaches the same or a different switch-off position. - Method according to Claim 1,
characterized in that
a predetermined synchronizing position of the washing drum (2) is detected by the position sensor (9) during the drive phase and is signalled to the control device, and with the washing drum (2) still being driven by the motor (7), the switch-off position is reached a predetermined time (TR) after passing through the synchronizing position. - Method according to Claim 1,
characterized in that
a predetermined synchronizing position of the washing drum is detected by the position sensor (9) during the drive phase and is signalled to the control device (8) and, with the washing drum (2) still being driven by the motor (7), the switch-off position is reached a specific number (nR) of tacho pulses of a tacho generator of the motor (7) after the washing drum (2) has passed through the synchronizing position. - Method according to one of the preceding claims,
characterized in that
the location of the switch-off position is selected according to the geometry of the washing drum (2) and the speed of the washing drum (2) in the drive phase. - Method according to one of the preceding claims,
characterized in that
the location of the switch-off position is selected according to the braking forces acting on the washing drum (2) after the drive phase. - Method according to one of the preceding claims,
characterized in that
the switch-off position is adjusted in direction of rotation of the washing drum (2) if the target position is not reached, and in that the switch-off position is adjusted counter to the direction of rotation of the washing drum (2) if it is rotated beyond the target position in direction of rotation. - Method according to one of Claims 1 or 4 to 6,
characterized in that
the magnitude of the adjustment of the angle for the switch-off position in direction of rotation of the motor is less than the magnitude of the admissible angle to the target position, and in that the magnitude of the adjustment of the angle for the switch-off position counter to the direction of rotation of the motor is approximately as great as the magnitude of the admissible angle to the target position. - Method according to one of the preceding claims in the case of a washing machine, in which the target position is also to be reached when water is in the washing drum (2),
characterized in that
a further switch-off position is predetermined, which is active when water is in the washing drum (2) and after which the washing drum (2) carries on rotating into the target position. - Method according to one of the preceding claims,
characterized in that
the speed of the washing drum (2) in the drive phase is less than a spin speed of the washing machine. - Method according to one of the preceding claims,
characterized in that
the speed of the washing drum (2) in the drive phase is less than a wash speed of the washing machine.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE59906202T DE59906202D1 (en) | 1999-12-23 | 1999-12-23 | Method for positioning a washing drum of a washing machine in a target position |
| EP99125728A EP1111117B2 (en) | 1999-12-23 | 1999-12-23 | Method for positioning a washing machine drum in a target position |
| ES99125728T ES2202999T5 (en) | 1999-12-23 | 1999-12-23 | PROCEDURE FOR POSITIONING A WASHING DRUM OF A WASHER IN AN OBJECTIVE POSITION. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP99125728A EP1111117B2 (en) | 1999-12-23 | 1999-12-23 | Method for positioning a washing machine drum in a target position |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1111117A1 EP1111117A1 (en) | 2001-06-27 |
| EP1111117B1 EP1111117B1 (en) | 2003-07-02 |
| EP1111117B2 true EP1111117B2 (en) | 2008-07-02 |
Family
ID=8239698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99125728A Expired - Lifetime EP1111117B2 (en) | 1999-12-23 | 1999-12-23 | Method for positioning a washing machine drum in a target position |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1111117B2 (en) |
| DE (1) | DE59906202D1 (en) |
| ES (1) | ES2202999T5 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109518418A (en) * | 2017-09-18 | 2019-03-26 | 青岛海尔洗衣机有限公司 | The method for trimming of inner cylinder position for top-opening type clothes treatment device |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10242854B3 (en) * | 2002-09-14 | 2004-07-01 | Diehl Ako Stiftung & Co. Kg | Control system for washing drum of top loading washing machine stops drum at desired angle with loading aperture at top and uses sensors and electronic circuits regulating short drive phases |
| ATE464420T1 (en) * | 2007-01-08 | 2010-04-15 | Electrolux Home Prod Corp | SENSOR DEVICE FOR DETERMINING THE ANGLE POSITION OF A WASHING DRUM OF A WASHING MACHINE |
| US9416478B2 (en) | 2009-03-31 | 2016-08-16 | Lg Electronics Inc. | Washing machine and washing method |
| CN102317533B (en) | 2009-02-11 | 2014-07-16 | Lg电子株式会社 | Washing method and washing machine |
| US9822473B2 (en) | 2009-07-27 | 2017-11-21 | Lg Electronics Inc. | Control method of a laundry machine |
| US9234307B2 (en) | 2009-07-27 | 2016-01-12 | Lg Electronics Inc. | Control method of a laundry machine |
| US9695537B2 (en) | 2009-07-27 | 2017-07-04 | Lg Electronics Inc. | Control method of a laundry machine |
| US10533275B2 (en) | 2009-07-27 | 2020-01-14 | Lg Electronics Inc. | Control method of a laundry machine |
| WO2011019196A2 (en) * | 2009-08-11 | 2011-02-17 | Lg Electronics Inc. | Control method of a laundry machine |
| US8776297B2 (en) | 2009-10-13 | 2014-07-15 | Lg Electronics Inc. | Laundry treating apparatus and method |
| WO2020083078A1 (en) * | 2018-10-23 | 2020-04-30 | 青岛海尔滚筒洗衣机有限公司 | Drum washing machine |
| CN112779719A (en) * | 2019-11-01 | 2021-05-11 | 佛山市云米电器科技有限公司 | Washing machine deceleration method and system, storage medium and washing machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3623059A1 (en) * | 1986-07-09 | 1988-01-21 | Bosch Siemens Hausgeraete | DEVICE FOR MOVING THE DRUM OF A LAUNDRY TREATMENT MACHINE IN THE LOADING POSITION |
| DE3707218A1 (en) * | 1987-03-06 | 1988-09-15 | Licentia Gmbh | Method for the positioning of the laundry drum of a casing-loadable drum-type washing machine |
| ES2026381A6 (en) * | 1989-11-28 | 1992-04-16 | Bosch Siemens Hausgeraete | DRUM WASHER WITH COVER LOAD. |
| FR2656010B1 (en) * | 1989-12-15 | 1992-02-28 | Ciapem | PROCESS FOR STOPPING A DRUM OF A WASHING MACHINE PUTTING THE DRUM GATE IN FRONT OF THE WASHING MACHINE AND WASHING MACHINE IMPLEMENTING SUCH A PROCESS. |
| FR2726407B1 (en) * | 1994-10-26 | 1996-11-29 | Ciapem | DEVICE FOR STOPPING THE DRUM OF A WASHING MACHINE OR DRYER |
| FR2736943B1 (en) * | 1995-07-21 | 1997-08-22 | Esswein Sa | STOPPING POSITIONING PROCESS OF A ROTATING PART MOVED BY A UNIVERSAL MOTOR, IN PARTICULAR OF THE DRUM OF A WASHING MACHINE LOADING FROM ABOVE, AND IMPLEMENTATION DEVICE |
-
1999
- 1999-12-23 EP EP99125728A patent/EP1111117B2/en not_active Expired - Lifetime
- 1999-12-23 DE DE59906202T patent/DE59906202D1/en not_active Expired - Lifetime
- 1999-12-23 ES ES99125728T patent/ES2202999T5/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109518418A (en) * | 2017-09-18 | 2019-03-26 | 青岛海尔洗衣机有限公司 | The method for trimming of inner cylinder position for top-opening type clothes treatment device |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1111117B1 (en) | 2003-07-02 |
| DE59906202D1 (en) | 2003-08-07 |
| EP1111117A1 (en) | 2001-06-27 |
| ES2202999T5 (en) | 2008-12-16 |
| ES2202999T3 (en) | 2004-04-01 |
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