EP2348152B1 - Washing machine with flow device - Google Patents

Washing machine with flow device Download PDF

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Publication number
EP2348152B1
EP2348152B1 EP10000500.8A EP10000500A EP2348152B1 EP 2348152 B1 EP2348152 B1 EP 2348152B1 EP 10000500 A EP10000500 A EP 10000500A EP 2348152 B1 EP2348152 B1 EP 2348152B1
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EP
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Prior art keywords
nozzle
washing machine
drum
washing
jet
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EP10000500.8A
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German (de)
French (fr)
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EP2348152A1 (en
Inventor
Patrick Dummeier
Dirk Sieding
Andrej Vonberg
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Miele und Cie KG
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Miele und Cie KG
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Priority to ES10000500.8T priority Critical patent/ES2549388T3/en
Priority to EP10000500.8A priority patent/EP2348152B1/en
Publication of EP2348152A1 publication Critical patent/EP2348152A1/en
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    • 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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation arrangements

Definitions

  • the invention relates to a washing machine with a tub for holding washing liquid for treating laundry, with a horizontally rotatably mounted in the tub drum for receiving the laundry, a motor for rotating the drum and a Umflut adopted for conveying the washing liquid from the lower region of the tub in the upper portion, based on the operational set-up position of the washing machine, wherein the Umflut shark comprises a pump, a conduit and a nozzle which is adapted to inject the washing liquid into the drum.
  • the DE 199 34 579 A1 discloses a washing machine with a Umflut driven, in which the Umlutrohr opens from above into the tub.
  • a washing machine with a flooding device which has a nozzle for a wide-spread jet. This allows a wide area within the drum to be sprayed. Since the nozzle has a large opening, the pump must provide a fairly large fluid delivery. Furthermore, it is not ensured that the rear drum space is reached by the jet, since due to the large opening only a so-called surge is expected. Similar washing machines are from the EP 1 505 191 A1 and the JP 2009 006081 A known.
  • the WO 2009/021626 A1 discloses a nozzle for a dishwasher. In this case, different shapes of the outlet jet are achieved by different flow body.
  • the DE 10 2005 013 127 A1 discloses a nozzle for a dishwasher having a variable opening area.
  • the invention is therefore based on the object to provide a washing machine to improve the washing effect with an optimized flooding device.
  • the main advantage of the method according to the invention is that in a simple way, an improvement in the washing effect at about the same duration and amount of water, compared to a conventional washing machine with Umflut Road is achieved. Elaborate design measures are not necessary here, since only the control of the pump must be adapted to the special nozzle geometry.
  • the pump is adapted to supply the washing liquid with different delivery speeds of the nozzle, and the nozzle is adapted to form the shape of the exit jet differently depending on the conveying speed of the washing liquid. This ensures that the discharge jet is fed into several areas of the drum. Although this happens at different times, but a nearly complete admission to the laundry with flooded washing liquid is possible.
  • the pump is designed to provide at least a first and a second conveying speed.
  • the second conveying speed is higher than the first conveying speed. This can be influenced in a simple manner by means of a control device, the conveying speed and thus the discharge jet of the nozzle.
  • the nozzle has an outlet opening which is widened in relation to an inlet opening, so that, as it were, an inverted funnel is formed.
  • the nozzle on the back, ie opposite the outlet opening, walls which are in the horizontal longitudinal section of the nozzle V-shaped at an obtuse angle to each other.
  • the nozzle has an approximately horizontal wall, so that a horizontally fan beam is provided. It is expedient that the angle is in the range of 100 ° to 170 °.
  • a flow body is arranged in the region of the outlet opening. This flow body causes in conjunction with the obtuse angle attached to each other rear walls, if necessary, deflection or fanning of the outlet jet from the nozzle.
  • the flow body has the shape of a vertical cylinder. This is particularly simple and stable to install between the lower, horizontal wall and the upper, horizontal or obliquely upward wall. Furthermore, the curvature of the cladding region is particularly well suited for beam deflection.
  • the nozzle is arranged so that the liquid jet flows around the flow body at the first flow velocity and due to the flow characteristics behind the flow body combines into a single jet, which is directed approximately axially to the interior of the drum. This will direct a narrow jet into the rear drum area.
  • the nozzle is designed so that the liquid jet is deflected at the second, higher flow rate of the flow body against the back walls so that at least two separate beams can form. This causes a distribution of at least two laterally fanned rays in the front to middle region of the drum.
  • the separate beams are each directed obliquely in the direction of the drum shell.
  • a loading of the laundry in the lateral region of the drum is achieved.
  • Fig. 1 is a purely schematic representation of a washing machine 1, shown with a tub 2.
  • the position and direction information refer to the operational installation position of the washing machine 1.
  • a rotatably mounted and driven by an electric motor 13 drum 3 is arranged, which moves the laundry items located in the tub 2 8.
  • the drum 3 is made in the present embodiment of stainless steel and provided with a plurality of openings for the flooding.
  • the housing 4 has a loading opening 9, via which the interior of the drum 3 can be reached through the sealing sleeve 6.
  • the loading opening 9 can be closed by means of a door 5.
  • a radiator 7 is arranged, which can heat the washing liquid in the tub 2.
  • an inlet valve 15 is sketched, which provides the running in of the water from the supply network.
  • the water is passed through the connecting pipe 14 into the tub 2, wherein in the dispenser 11 entered detergent is flushed into the tub 2.
  • a drain device 12 which leads the spent washing liquid or the rinse water from the tub 2 to the drain line 12c, which usually opens into a sewer.
  • the control device 18 controls the inlet valve 15, the activity of the drain device 12, the drive motor 13, which is energized via the power unit or a frequency converter 16, and the radiator 7.
  • Pump 17a a circulating 17 mounted.
  • the pump 17a is connected to the drain pipe 12b at the inlet side and suction side, respectively, and can convey the washing liquid 19 therein to the nozzle 20 through the pipe 17b in the upper area.
  • the washing liquid 19 is injected or flows through the nozzle 20 onto the laundry items 8.
  • Fig. 2 shows the nozzle 20 in a single view from the exit side.
  • the connecting piece 21 can be seen, to which the circulating line 17b can be shot.
  • the nozzle 21 opens into the nozzle chamber 22, which is bounded by the upper wall 23, the lower wall 24 and the rear inclined walls 25, 26.
  • a flow body 28 is arranged approximately in the center, which is formed in connection with the rear walls 25, 26 for influencing the outlet jet 29a, 29b, 29c.
  • Fig. 3 shows the nozzle 20 in a side view.
  • the cylindrical flow body 28 is mounted in the opening region 27 at least approximately perpendicularly between the upper wall 23 and the lower wall 24.
  • the inlet opening 30, through which the washing liquid passes into the nozzle chamber, is located in the upper wall 23 in the rear region of the nozzle chamber 22.
  • Fig. 4 shows the nozzle 20 in a horizontal sectional view AA.
  • the washing liquid 19 introduced into the nozzle chamber 22 adjoins the rear, V-shaped walls and emerges there from the nozzle opening 27.
  • the second conveying speed is higher than a so-called first conveying speed at which this effect does not occur.
  • the flow body 28 is in this case an obstacle, which divides the washing liquid 19 into two separate outlet jets 29a, 29b. These rays 29a, 29b widen after exiting the nozzle 20 on, so that a wide distribution of the washing liquid 19 within the drum 3 takes place.
  • Fig. 5 shows the situation at the first, so-called low flow velocity.
  • the liquid 19 flows along the surface of the curved flow body 28 and unites behind the flow body into a single, substantially bundled outlet jet 29c.
  • This single beam 29c passes further into the rear region of the drum 3.
  • the direction or the beam shape can thus be varied without changing the nozzle only with different flow rates.
  • only the control device 17 must control the pump 17a, which is easily possible by programming.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)

Description

Die Erfindung betrifft eine Waschmaschine mit einem Laugenbehälter zur Aufnahme von Waschflüssigkeit zum Behandeln von Wäsche, mit einer im Laugenbehälter horizontal drehbar gelagerten Trommel zur Aufnahme der Wäsche, einem Motor zum Drehen der Trommel und einer Umfluteinrichtung zum Fördern der Waschflüssigkeit aus dem unteren Bereich des Laugenbehälters in den oberen Bereich, bezogen auf die betriebsgemäße Aufstellposition der Waschmaschine, wobei die Umfluteinrichtung eine Pumpe, eine Leitung und eine Düse umfasst, die dazu ausgebildet ist, die Waschflüssigkeit in die Trommel zu spritzen.The invention relates to a washing machine with a tub for holding washing liquid for treating laundry, with a horizontally rotatably mounted in the tub drum for receiving the laundry, a motor for rotating the drum and a Umfluteinrichtung for conveying the washing liquid from the lower region of the tub in the upper portion, based on the operational set-up position of the washing machine, wherein the Umfluteinrichtung comprises a pump, a conduit and a nozzle which is adapted to inject the washing liquid into the drum.

Zum Waschen von Wäsche in einer Trommelwaschmaschine wird die Wäsche in der drehenden Trommel bewegt, wodurch die Benetzung bzw. Durchfeuchtung der Wäsche mit der Waschflüssigkeit und die Waschmechanik bewirkt werden. Hierbei befindet sich Wasser im Laugenbehälter bzw. in der Trommel, wobei durch die Bewegung der Wäsche der Schmutz ausgespült wird. Um die Waschlauge möglichst vollständig mit der Wäsche in Verbindung zu bringen, ist es bekannt, mittels einer Umfluteinrichtung die Waschflüssigkeit vom unteren Bereich des Laugenbehälters bzw. aus dem Ablaufkanal in den oberen Bereich zu fördern, so dass die in der Trommel befindlichen Wäschestücke von oben mit Waschflüssigkeit berieselt werden. Bei gleichzeitiger Trommeldrehung wird eine gute Durchmischung der Wäschestücke mit der Waschflüssigkeit erreicht. Ferner wird durch die Vermeidung von Totvolumen eine gute Ausnutzung des Wassers bzw. des Waschmittels erreicht. Eine derartige Waschmaschine ist aus der DE 34 01 899 A1 bekannt. Hierbei ist es nachteilig, dass keine gezielte Verteilung der Waschflüssigkeit vorgenommen wird, so kommt es vor, dass der Flüssigkeitsstrahl im Mittenbereich auftrifft, die Randbereiche der Trommel jedoch nur unzureichend benetzt werden. Die DE 199 34 579 A1 offenbart eine Waschmaschine mit einer Umfluteinrichtung, bei der das Umflutrohr von oben in den Laugenbehälter mündet.For washing laundry in a drum washing machine, the laundry is moved in the rotating drum, whereby the wetting of the laundry with the washing liquid and the washing mechanism are effected. In this case, there is water in the tub or in the drum, wherein the dirt is flushed out by the movement of the laundry. In order to bring the wash as completely as possible in connection with the laundry, it is known to promote by means of a Umfluteinrichtung the washing liquid from the lower region of the tub or from the drainage channel in the upper region, so that the laundry located in the drum from above Be sprinkled washing liquid. With simultaneous drum rotation a good mixing of the laundry with the washing liquid is achieved. Furthermore, by avoiding dead volume, good utilization of the water or of the detergent is achieved. Such a washing machine is from the DE 34 01 899 A1 known. In this case, it is disadvantageous that no targeted distribution of the washing liquid is carried out, so it happens that the liquid jet impinges in the middle region, but the edge regions of the drum are only insufficiently wetted. The DE 199 34 579 A1 discloses a washing machine with a Umfluteinrichtung, in which the Umlutrohr opens from above into the tub.

Aus der EP 1 386 996 B1 ist eine Waschmaschine mit einer Umfluteinrichtung bekannt, die eine Düse für einen breit gefächerten Strahl besitzt. Dadurch kann ein breiter Bereich innerhalb der Trommel besprüht werden. Da die Düse eine große Öffnung hat, muss die Pumpe eine recht große Flüssigkeitsförderung bereitstellen. Ferner ist nicht sichergestellt, dass der hintere Trommelraum vom Düsenstrahl erreicht wird, da aufgrund der großen Öffnung nur ein sogenannter Schwall zu erwarten ist. Ähnliche Waschmaschinen sind aus der EP 1 505 191 A1 und der JP 2009 006081 A bekannt.From the EP 1 386 996 B1 For example, a washing machine with a flooding device is known which has a nozzle for a wide-spread jet. This allows a wide area within the drum to be sprayed. Since the nozzle has a large opening, the pump must provide a fairly large fluid delivery. Furthermore, it is not ensured that the rear drum space is reached by the jet, since due to the large opening only a so-called surge is expected. Similar washing machines are from the EP 1 505 191 A1 and the JP 2009 006081 A known.

Die WO 2009/021626 A1 offenbart eine Düse für einen Geschirrspüler. Hierbei werden verschiedene Formen des Austrittstrahls durch unterschiedliche Strömungskörper erreicht. Die DE 10 2005 013 127 A1 offenbart eine Düse für einen Geschirrspüler, die einen variablen Öffnungsquerschnitt aufweist.The WO 2009/021626 A1 discloses a nozzle for a dishwasher. In this case, different shapes of the outlet jet are achieved by different flow body. The DE 10 2005 013 127 A1 discloses a nozzle for a dishwasher having a variable opening area.

Der Erfindung liegt deshalb die Aufgabe zu Grunde, eine Waschmaschine zur Verbesserung der Waschwirkung mit einer optimierten Umfluteinrichtung bereitzustellen.The invention is therefore based on the object to provide a washing machine to improve the washing effect with an optimized flooding device.

Die Aufgabe wird durch eine Waschmaschine mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Ausführungen ergeben sich aus den abhängigen Ansprüchen.The object is achieved by a washing machine with the features of claim 1. Advantageous embodiments will be apparent from the dependent claims.

Der wesentliche Vorteil des erfindungsgemäßen Verfahrens ist, dass auf einfache Weise eine Verbesserung der Waschwirkung bei etwa gleicher Dauer und Wassermenge, gegenüber einer herkömmlichen Waschmaschine mit Umfluteinrichtung erreicht wird. Aufwändige konstruktive Maßnahmen sind hierbei nicht notwendig, da nur die Ansteuerung der Pumpe auf die spezielle Düsengeometrie angepasst werden muss.The main advantage of the method according to the invention is that in a simple way, an improvement in the washing effect at about the same duration and amount of water, compared to a conventional washing machine with Umfluteinrichtung is achieved. Elaborate design measures are not necessary here, since only the control of the pump must be adapted to the special nozzle geometry.

Bei der erfindungsgemäßen Waschmaschine ist es vorgesehen, dass die Pumpe dazu eingerichtet ist, die Waschflüssigkeit mit unterschiedlichen Fördergeschwindigkeiten der Düse zuzuführen, und die Düse ist dazu ausgebildet, die Form des Austrittstrahls in Abhängigkeit der Fördergeschwindigkeit der Waschflüssigkeit unterschiedlich auszubilden. Dadurch wird erreicht, dass der Austrittsstrahl in mehrere Bereiche der Trommel zugeführt wird. Dies geschieht zwar zu unterschiedlichen Zeitpunkten, jedoch ist eine nahezu vollständige Beaufschlagung der Wäsche mit umgefluteter Waschflüssigkeit möglich.In the washing machine according to the invention, it is provided that the pump is adapted to supply the washing liquid with different delivery speeds of the nozzle, and the nozzle is adapted to form the shape of the exit jet differently depending on the conveying speed of the washing liquid. This ensures that the discharge jet is fed into several areas of the drum. Although this happens at different times, but a nearly complete admission to the laundry with flooded washing liquid is possible.

Erfindungsgemäß ist die Pumpe zur Bereitstellung von zumindest einer ersten und einer zweiten Fördergeschwindigkeit ausgebildet. Die zweite Fördergeschwindigkeit ist höher als die erste Fördergeschwindigkeit. Damit kann auf einfache Weise mittels einer Steuereinrichtung die Fördergeschwindigkeit und damit der Austrittsstrahl der Düse beeinflusst werden.According to the invention, the pump is designed to provide at least a first and a second conveying speed. The second conveying speed is higher than the first conveying speed. This can be influenced in a simple manner by means of a control device, the conveying speed and thus the discharge jet of the nozzle.

In einer zweckmäßigen Weiterbildung ist die Pumpe zur Bereitstellung von Fördergeschwindigkeiten im Bereich zwischen 1 l/sek und 10 l/Sek. ausgebildet. Mit diesen Fördergeschwindigkeiten bzw. Förderleistungen kann eine optimale Strahlform erreicht werden, um zumindest nahezu die gesamte Innenbreite und Innenlänge der Trommel zu erreichen.In an expedient development, the pump for providing delivery speeds in the range between 1 l / sec and 10 l / sec. educated. With these conveying speeds or delivery rates, an optimal beam shape can be achieved in order to achieve at least almost the entire inner width and inner length of the drum.

Erfindungsgemäß besitzt die Düse eine gegenüber einer Eintrittsöffnung aufgeweitete Austrittsöffnung, so dass sozusagen ein umgedrehter Trichter entsteht.According to the invention, the nozzle has an outlet opening which is widened in relation to an inlet opening, so that, as it were, an inverted funnel is formed.

In einer vorteilhaften Weiterbildung weist die Düse rückseitige, also gegenüberliegend der Austrittsöffnung, Wandungen auf, die im horizontalen Längsschnitt der Düse V-förmig in einem stumpfen Winkel zueinander liegen. Unten hat die Düse eine in etwa horizontale Wandung, so dass ein horizontal gefächerter Strahl bereitgestellt wird. Hierbei ist es zweckmäßig, dass der Winkel im Bereich von 100° bis 170° liegt.In an advantageous development, the nozzle on the back, ie opposite the outlet opening, walls, which are in the horizontal longitudinal section of the nozzle V-shaped at an obtuse angle to each other. At the bottom, the nozzle has an approximately horizontal wall, so that a horizontally fan beam is provided. It is expedient that the angle is in the range of 100 ° to 170 °.

Erfindungsgemäß ist im Bereich der Austrittöffnung ein Strömungskörper angeordnet. Dieser Strömungskörper bewirkt im Zusammenspiel mit den stumpfwinklig zueinander angebrachten rückseitigen Wandungen eine bedarfsweise Umlenkung oder Auffächerung des Austrittstrahls aus der Düse.According to the invention, a flow body is arranged in the region of the outlet opening. This flow body causes in conjunction with the obtuse angle attached to each other rear walls, if necessary, deflection or fanning of the outlet jet from the nozzle.

Hierbei ist es zweckmäßig, dass der Strömungskörper die Form eines senkrecht stehenden Zylinders aufweist. Dieser ist besonders einfach und stabil zwischen der unteren, horizontalen Wandung und der oberen, horizontalen oder schräg nach oben gerichteten Wandung anzubringen. Ferner ist die Krümmung des Mantelbereichs für die Strahlumlenkung besonders gut geeignet.It is expedient that the flow body has the shape of a vertical cylinder. This is particularly simple and stable to install between the lower, horizontal wall and the upper, horizontal or obliquely upward wall. Furthermore, the curvature of the cladding region is particularly well suited for beam deflection.

Insgesamt ist die Düse dazu eingerichtet, dass der Flüssigkeitsstrahl bei der ersten Strömungsgeschwindigkeit um den Strömungskörper strömt und sich aufgrund der Strömungseigenschaften hinter dem Strömungskörper zu einem einzigen Strahl vereint, der etwa axial zum Inneren der Trommel gerichtet ist. Dadurch wird ein schmaler Strahl in den hinteren Trommelbereich geleitet.Overall, the nozzle is arranged so that the liquid jet flows around the flow body at the first flow velocity and due to the flow characteristics behind the flow body combines into a single jet, which is directed approximately axially to the interior of the drum. This will direct a narrow jet into the rear drum area.

Ferner ist die Düse dazu eingerichtet, dass der Flüssigkeitsstrahl bei der zweiten, höheren Strömungsgeschwindigkeit vom Strömungskörper derart gegen die rückseitigen Wandungen abgelenkt wird, dass sich zumindest zwei separate Strahlen ausbilden können. Dies Bewirkt eine Verteilung von zumindest zwei seitlich aufgefächerten Strahlen im vorderen bis mittleren Bereich der Trommel.Furthermore, the nozzle is designed so that the liquid jet is deflected at the second, higher flow rate of the flow body against the back walls so that at least two separate beams can form. This causes a distribution of at least two laterally fanned rays in the front to middle region of the drum.

Hierbei ist es zweckmäßig, dass die separaten Strahlen jeweils schräg in Richtung des Trommelmantels gerichtet sind. So wird eine Beaufschlagung der Wäsche im seitlichen Bereich der Trommel erreicht.It is expedient that the separate beams are each directed obliquely in the direction of the drum shell. Thus, a loading of the laundry in the lateral region of the drum is achieved.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen rein schematisch dargestellt und wird nachfolgend näher beschrieben. Es zeigen:

Fig. 1:
eine Waschmaschine in einer skizzierten Schnittdarstellung und
Fig. 2 bis 5
die Düse in unterschiedlichen Ansichten
An embodiment of the invention is shown purely schematically in the drawings and will be described in more detail below. Show it:
Fig. 1:
a washing machine in a sketched sectional view and
Fig. 2 to 5
the nozzle in different views

In Fig. 1 ist in rein schematischer Darstellung eine Waschmaschine 1, mit einem Laugenbehälter 2 dargestellt. Die Positions- und Richtungsangaben beziehen sich auf die betriebsgemäße Aufstellposition der Waschmaschine 1. Innerhalb des Laugenbehälters 2 ist eine drehbar gelagerte und über einen elektrischen Motor 13 angetriebene Trommel 3 angeordnet, die die im Laugenbehälter 2 befindlichen Wäschestücke 8 bewegt. Die Trommel 3 ist im vorliegenden Ausführungsbeispiel aus Edelstahl hergestellt und mit einer Vielzahl an Öffnungen für die Durchflutung versehen. Das Gehäuse 4 hat eine Beladungsöffnung 9, über die das Innere der Trommel 3 durch die Dichtungsmanschette 6 hindurch erreichbar ist. Die Beladungsöffnung 9 ist mittels einer Tür 5 verschließbar. Im unteren Bereich des Laugenbehälters 2 ist ein Heizkörper 7 angeordnet, der die Waschflüssigkeit im Laugenbehälter 2 erhitzen kann. Im oberen Bereich der Maschine 1 ist ein Einlassventil 15 skizziert, welches das Einlaufen des Wassers aus dem Versorgungsnetz bereitstellt. Über den Einspülkasten 11 wird das Wasser über das Verbindungsrohr 14 in den Laugenbehälter 2 geleitet, wobei im Einspülkasten 11 eingegebenes Waschmittel mit in den Laugenbehälter 2 gespült wird.In Fig. 1 is a purely schematic representation of a washing machine 1, shown with a tub 2. The position and direction information refer to the operational installation position of the washing machine 1. Within the tub 2 a rotatably mounted and driven by an electric motor 13 drum 3 is arranged, which moves the laundry items located in the tub 2 8. The drum 3 is made in the present embodiment of stainless steel and provided with a plurality of openings for the flooding. The housing 4 has a loading opening 9, via which the interior of the drum 3 can be reached through the sealing sleeve 6. The loading opening 9 can be closed by means of a door 5. In the lower part of the tub 2, a radiator 7 is arranged, which can heat the washing liquid in the tub 2. In the upper part of the machine 1, an inlet valve 15 is sketched, which provides the running in of the water from the supply network. About the Einspülkasten 11, the water is passed through the connecting pipe 14 into the tub 2, wherein in the dispenser 11 entered detergent is flushed into the tub 2.

Unterhalb des Laugenbehälters 2 ist eine Ablaufeinrichtung 12 angeordnet, die die verbrauchte Waschflüssigkeit oder das Spülwasser aus dem Laugenbehälter 2 zur Ablaufleitung 12c herausführt, die in der Regel in einen Abwasserkanal mündet. Die Steuereinrichtung 18 steuert das Einlassventil 15, die Aktivität der Ablaufeinrichtung 12 den Antriebsmotor 13, der über das Leistungsteil oder einen Frequenzumrichter 16 bestromt wird, und den Heizkörper 7. Im unteren Bereich des Laugenbehälters 2, bezogen auf die bertriebsgemäße Aufstellposition der Waschmaschine, ist die Pumpe 17a einer Umfluteinrichtung 17 angebracht. Die Pumpe 17a ist auf der Eingangsseite bzw. Saugseite mit dem Ablaufrohr 12b verbunden und kann die darin befindliche Waschflüssigkeit 19 durch die Leitung 17b in den oberen Bereich zur Düse 20 fördern. Durch die Düse 20 spritzt bzw. fließt die Waschflüssigkeit 19 auf die Wäschestücke 8.Below the tub 2, a drain device 12 is arranged, which leads the spent washing liquid or the rinse water from the tub 2 to the drain line 12c, which usually opens into a sewer. The control device 18 controls the inlet valve 15, the activity of the drain device 12, the drive motor 13, which is energized via the power unit or a frequency converter 16, and the radiator 7. In the lower part of the tub 2, based on the Bertriebsgemäße installation position of the washing machine, which is Pump 17a a circulating 17 mounted. The pump 17a is connected to the drain pipe 12b at the inlet side and suction side, respectively, and can convey the washing liquid 19 therein to the nozzle 20 through the pipe 17b in the upper area. The washing liquid 19 is injected or flows through the nozzle 20 onto the laundry items 8.

Fig. 2 zeigt die Düse 20 in einer Einzelansicht von der Austrittsseite her gesehen. Hier ist der Anschlussstutzen 21 zu erkennen, an den die Umflutleitung 17b angeschossen werden kann. Der Stutzen 21 mündet in den Düsenraum 22, der durch die obere Wandung 23, die untere Wandung 24 und die rückseitigen schräggestellten Wandungen 25, 26 begrenzt ist. Im Öffnungsbereich 27 ist etwa im Zentrum ein Strömungskörper 28 angeordnet, der in Verbindung mit den rückseitigen Wandungen 25, 26 zur Beeinflussung des Austrittsstrahls 29a, 29b, 29c ausgebildet ist. Fig. 2 shows the nozzle 20 in a single view from the exit side. Here, the connecting piece 21 can be seen, to which the circulating line 17b can be shot. The nozzle 21 opens into the nozzle chamber 22, which is bounded by the upper wall 23, the lower wall 24 and the rear inclined walls 25, 26. In the opening region 27, a flow body 28 is arranged approximately in the center, which is formed in connection with the rear walls 25, 26 for influencing the outlet jet 29a, 29b, 29c.

Fig. 3 zeigt die Düse 20 in einer seitlichen Ansicht. Hier ist zu erkennen, dass der zylindrische Strömungskörper 28 im Öffnungsbereich 27 zumindest etwa senkrecht zwischen der oberen Wandung 23 und der unteren Wandung 24 angebracht ist. Die Eintrittsöffnung 30, durch die die Waschflüssigkeit in den Düsenraum gelangt, befindet sich in der oberen Wandung 23 im hinteren Bereich des Düsenraumes 22. Fig. 3 shows the nozzle 20 in a side view. Here it can be seen that the cylindrical flow body 28 is mounted in the opening region 27 at least approximately perpendicularly between the upper wall 23 and the lower wall 24. The inlet opening 30, through which the washing liquid passes into the nozzle chamber, is located in the upper wall 23 in the rear region of the nozzle chamber 22.

Fig. 4 zeigt die Düse 20 in einer horizontalen Schnittdarstellung A-A. Hier ist zu erkennen, dass bei einer zweiten Fördergeschwindigkeit der Pumpe 17a die in den Düsenraum 22 eingeleitete Waschflüssigkeit 19 sich an den hinteren, V-förmig angeordneten Wandungen anlegt und dort entlang aus der Düsenöffnung 27austritt. Die zweite Fördergeschwindigkeit ist höher als eine sogenannte erste Fördergeschwindigkeit, bei der dieser Effekt nicht auftritt. Der Strömungskörper 28 ist hierbei ein Hindernis, der die Waschflüssigkeit 19 in zwei voneinander getrennte Austrittsstrahlen 29a, 29b aufteilt. Diese Strahlen 29a, 29b weiten sich nach dem Austritt aus der Düse 20 weiter auf, so dass eine breite Verteilung der Waschflüssigkeit 19 innerhalb der Trommel 3 erfolgt. Fig. 4 shows the nozzle 20 in a horizontal sectional view AA. Here it can be seen that at a second conveying speed of the pump 17a, the washing liquid 19 introduced into the nozzle chamber 22 adjoins the rear, V-shaped walls and emerges there from the nozzle opening 27. The second conveying speed is higher than a so-called first conveying speed at which this effect does not occur. The flow body 28 is in this case an obstacle, which divides the washing liquid 19 into two separate outlet jets 29a, 29b. These rays 29a, 29b widen after exiting the nozzle 20 on, so that a wide distribution of the washing liquid 19 within the drum 3 takes place.

Fig. 5 zeigt die Situation bei der ersten, sogenannten geringen Strömungsgeschwindigkeit. Hier strömt die Flüssigkeit 19 an der Oberfläche des gekrümmten Strömungskörpers 28 entlang und vereint sich hinter dem Strömungskörper zu einem einzigen, im Wesentlichen gebündelten Austrittsstrahl 29c. Dieser einzelne Strahl 29c gelangt weiter in den hinteren Bereich der Trommel 3. Fig. 5 shows the situation at the first, so-called low flow velocity. Here, the liquid 19 flows along the surface of the curved flow body 28 and unites behind the flow body into a single, substantially bundled outlet jet 29c. This single beam 29c passes further into the rear region of the drum 3.

Die Richtung bzw. die Strahlform kann somit ohne die Düse zu verändern nur mit unterschiedlichen Strömungsgeschwindigkeiten variiert werden. Hierbei muss nur die Steuereinrichtung 17 die Pumpe 17a ansteuern, was durch Programmierung einfach möglich ist.The direction or the beam shape can thus be varied without changing the nozzle only with different flow rates. In this case, only the control device 17 must control the pump 17a, which is easily possible by programming.

Claims (8)

  1. Washing machine (1) comprising a suds container (2) for receiving washing liquid (19) for treating laundry (8), which machine comprises a drum (3) for receiving the laundry (8), which drum is horizontally rotatably mounted in the suds container (2), a motor (13) for rotating the drum (3) and a recirculation device (17) for conveying the washing liquid (19) out of the lower region of the suds container (2) into the upper region, based on the operational installation position of the washing machine (1), the recirculation device (17) comprising a pump (17a), a line (17b) and a nozzle (20) which is designed to spray the washing liquid (19) into the drum (3),
    characterised in that
    the pump (17a) is intended to supply the washing liquid (19) at at least one first and one second conveying speed of the nozzle (20), the second conveying speed being higher than the first conveying speed, and in that the nozzle (20) has an outlet opening (27) which is widened compared with an inlet opening (30) and in the region of which outlet opening a flow body (28) is arranged which, due to the rear walls being fitted together at an obtuse angle, causes, if necessary, a diversion or fanning of the outlet jet (29a, 29b, 29c) depending on the conveying speed of the washing liquid and therefore the nozzle (20) is designed to form the shape of the outlet jet (29a, 29b, 29c) in a different way depending on the conveying speed of the washing liquid (19).
  2. Washing machine (1) according to claim 2,
    characterised in that
    the pump (17a) is designed to provide conveying speeds in the range of between 1 l/sec and 10 l/sec.
  3. Washing machine (1) according to either claim 1 or claim 2,
    characterised in that
    the nozzle (20) has rear walls (25, 26) which, in the horizontal longitudinal section of the nozzle (20), are in a V shape at an obtuse angle to one another.
  4. Washing machine (1) according to claim 3,
    characterised in that
    the angle is in the range of from 100° to 170°.
  5. Washing machine (1) according to claim 1,
    characterised in that
    the flow body (28) is in the shape of a vertical cylinder.
  6. Washing machine (1) according to any of claims 1 to 5,
    characterised in that
    the nozzle (20) is configured such that the liquid jet (29c) flows around the flow body (28) at the first flow speed and merges into one single jet (29c) behind the flow body (28) due to the flow properties, which single jet is directed approximately axially towards the interior of the drum (3).
  7. Washing machine (1) according to any of claims 1 to 5,
    characterised in that
    the nozzle (20) is configured such that the liquid jet is diverted away from the flow body (28) at the second flow speed against the rear walls (25, 26) such that at least two separate jets (29a, 29b) can form.
  8. Washing machine (1) according to claim 7,
    characterised in that
    each of the separate jets (29a, 29b) is formed in a fanned manner and directed obliquely towards the drum casing.
EP10000500.8A 2010-01-20 2010-01-20 Washing machine with flow device Active EP2348152B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES10000500.8T ES2549388T3 (en) 2010-01-20 2010-01-20 Washing machine and circulation equipment
EP10000500.8A EP2348152B1 (en) 2010-01-20 2010-01-20 Washing machine with flow device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP10000500.8A EP2348152B1 (en) 2010-01-20 2010-01-20 Washing machine with flow device

Publications (2)

Publication Number Publication Date
EP2348152A1 EP2348152A1 (en) 2011-07-27
EP2348152B1 true EP2348152B1 (en) 2015-08-19

Family

ID=42244308

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10000500.8A Active EP2348152B1 (en) 2010-01-20 2010-01-20 Washing machine with flow device

Country Status (2)

Country Link
EP (1) EP2348152B1 (en)
ES (1) ES2549388T3 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014220020A1 (en) * 2014-10-02 2016-04-07 BSH Hausgeräte GmbH Laundry care device with a deflection element
DE102015214803A1 (en) * 2015-08-04 2017-02-09 BSH Hausgeräte GmbH Laundry care device with a circulation system
KR102570619B1 (en) * 2018-03-23 2023-08-23 엘지전자 주식회사 Washing machine and Method for controlling thereof
DE102018109753A1 (en) * 2018-04-24 2019-10-24 Miele & Cie. Kg Washing machine with circulating device
DE102018214137A1 (en) * 2018-08-22 2020-02-27 BSH Hausgeräte GmbH Laundry care device with an inlet nozzle

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3401899A1 (en) 1984-01-20 1985-07-25 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Drum-type washing machine for domestic use
DE19934579A1 (en) 1999-07-23 2001-01-25 Aeg Hausgeraete Gmbh Process is for wetting and washing laundry items in program-controlled washing machine
JP2004057821A (en) 2002-07-30 2004-02-26 Lg Electron Inc Washing machine
KR100688160B1 (en) 2003-08-07 2007-03-02 엘지전자 주식회사 Front loading type drum washing machine
DE102005013127B4 (en) 2004-11-12 2007-08-23 Aweco Appliance Systems Gmbh & Co. Kg Spraying device for spraying a working fluid
EP1700943B1 (en) * 2006-06-14 2009-04-01 V-Zug AG Washing machine with injection nozzle
JP2009006081A (en) 2007-06-29 2009-01-15 Toshiba Corp Washing machine
ATE524099T1 (en) 2007-08-14 2011-09-15 Miele & Cie DISHWASHER
KR20090107164A (en) * 2008-04-08 2009-10-13 엘지전자 주식회사 Washing machine

Also Published As

Publication number Publication date
ES2549388T3 (en) 2015-10-27
EP2348152A1 (en) 2011-07-27

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