EP3155949A1 - Water using household appliance - Google Patents

Water using household appliance Download PDF

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Publication number
EP3155949A1
EP3155949A1 EP16193461.7A EP16193461A EP3155949A1 EP 3155949 A1 EP3155949 A1 EP 3155949A1 EP 16193461 A EP16193461 A EP 16193461A EP 3155949 A1 EP3155949 A1 EP 3155949A1
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EP
European Patent Office
Prior art keywords
water
nozzle
household appliance
supply line
water supply
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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.)
Granted
Application number
EP16193461.7A
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German (de)
French (fr)
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EP3155949B1 (en
Inventor
Markus Behr
Holger Hoppe
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Miele und Cie KG
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Miele und Cie KG
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Priority to PL16193461T priority Critical patent/PL3155949T3/en
Publication of EP3155949A1 publication Critical patent/EP3155949A1/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
    • D06F39/088—Liquid supply arrangements
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L15/00—Washing or rinsing machines for crockery or tableware
    • A47L15/42—Details
    • A47L15/4278—Nozzles
    • A47L15/4282—Arrangements to change or modify spray pattern or direction

Definitions

  • the invention relates to a water-conducting household appliance.
  • the household appliance has at least one nozzle and a water supply line.
  • the water supply line is designed to direct water to the at least one nozzle, so that the water can escape from the at least one nozzle. If the at least one nozzle is an immovable nozzle, it can only radiate in the direction predetermined by its geometry.
  • the water supply line is configured to direct water to a plurality of nozzles, the pressure at each individual nozzle is reduced. At low line pressure, the pressure may be too low, for example, to achieve a good rinse with the guided through the nozzle water. Therefore, when flushing with water from the nozzle (s), problems may occur because the pressure is insufficient and / or the direction of the water jet issuing from the nozzle is not changeable.
  • the invention thus presents the problem of providing a water-conducting household appliance, in which the pressure on a nozzle can be increased in a simple manner and / or a direction of a water jet issuing from a nozzle can be changed.
  • a fluidic oscillator is arranged between the at least one nozzle and the water supply line.
  • the fluidic oscillator is a component that emits a self-oscillating jet when there is a flow of water, but does not require any moving parts.
  • the fluidic oscillator is a component that generates a self-excited oscillation in its interior, without relying on movable components, so that a periodically oscillating beam is generated at an output of the fluidic oscillator.
  • the term "oscillator” indicates that it is a component that is oscillating, that is, that outputs an oscillating beam at its output upon water penetration, and the term "fluidic" indicates that the oscillator has no moving parts.
  • the fluidic oscillator is able by its design ie in particular its geometry and dimensioning able to eject the self-oscillating beam at water flow. It is an effective, efficient and practical component that is designed statically.
  • the fluidic oscillator is reliable, durable, robust, quasi maintenance and non-destructive, has no moving parts, is arbitrarily scalable, and an output speed and frequency of the water are out of it adjustable depending on its geometry. It is therefore easy to integrate into a water-conducting household appliance of any size.
  • the fluidic oscillator has, for example, a symmetrical structure of an input, a flow chamber, two return channels and an output and is characterized by a self-excited oscillation in its interior, so that either an oscillating free jet exits at its exit at water passage or a periodic switching of two discrete output units is possible when the output is divided, for example by a wall in two discrete output units.
  • the fluidic oscillator is designed so that when exposed to water, the resulting water jet, after flowing through the inlet, automatically rests on one of several sides in the flow chamber, bounces against a wall downstream of the flow chamber, and splits into two streams. The first current leaves the fluidic oscillator through the output or one of the two output units.
  • the second stream is passed through one of two return passages and then passed back into the flow chamber and pushes the flow of water through the flow chamber to another wall of the flow chamber.
  • the process is mirror-inverted and the water jet leaves the fluidic oscillator through the exit in a different direction than before or through the other output unit.
  • the process is re-initialized so that the fluid steel leaving the fluidic oscillator is oscillating.
  • the achievable with the present invention consist in addition to the possibility of directing the water jet in more than one direction in that, if more than one nozzle is present, the nozzles can be controlled with a time delay.
  • the water supply may for example be a water supply that connects an external water network with the water-bearing household appliance.
  • the water supply may further be a water supply, which is designed to promote water from one area of the household appliance in another area of the household appliance.
  • the water supply is designed in particular to conduct water as liquid and / or steam.
  • the water supply line is preferably designed to conduct water in liquid and / or gaseous form, wherein the water may optionally be added to one or more further components such as detergents, dishwashing or the like.
  • the at least one nozzle is preferably an immovable nozzle.
  • the at least one nozzle may be a single nozzle associated with the water supply line.
  • the fluidic oscillator can be placed directly between the water supply line and the nozzle, ie without any additional components in between. Alternatively, the water supply several Be assigned nozzles that are arranged or formed in multiple channels. The fluidic oscillator is then preferably arranged between the water supply line and the channels having the nozzles.
  • the fluidic oscillator is connected to the water supply line and the nozzle such that water is passed via the water supply line through the fluidic oscillator in a nozzle. If the water supply line is associated with a nozzle, the jet area of the nozzle is increased by means of the fluidic oscillator.
  • one nozzle is arranged in a channel and another nozzle is arranged in a further channel.
  • the channel and the further channel are arranged adjacent to an output of the fluidic oscillator.
  • the fluidic oscillator is arranged between the water supply line and the channel and the further channel, which it passes during operation, the water flowing from the water supply through it periodically switching water into the channel and the other channel, so that a nozzle and the other nozzle alternately with Be supplied with water. This can increase the pressure on the nozzles.
  • the water-conducting household appliance preferably has a Ein Vietnamese suprakasten having the channel and the other channel.
  • the household appliance may be a washing machine having a Ein Hugheskasten with compartments in which a plurality of channels are arranged, each having a plurality of nozzles.
  • a compartment has a channel and a further channel, which are separated from each other and each having a plurality of nozzles.
  • the fluidic oscillator is arranged in the household appliance and designed such that it alternately supplies water to the channel and the further channel of the Ein Hugheskastens when water is supplied.
  • the at least one nozzle is designed to direct water into a drum of the household appliance and / or to the door for closing the household appliance.
  • the household appliance is, for example, a front-loading washing machine which has a tub for holding washing liquid, a drum rotatably mounted in the tub for receiving laundry, a loading opening for loading the drum with the laundry and a door for closing the loading opening, the door having a sight glass.
  • the water supply line and the at least one nozzle are then part of a Door sight glass purging designed to direct water to both the sight glass and the drum. A faster and better moisture penetration of the laundry can be achieved if the nozzle of the fluidic oscillator is connected upstream. The nozzle can thereby radiate over a larger area.
  • the washing machine may further comprise a circulating device, which is designed to convey water from one region of the tub into a further region of the tub.
  • the at least one nozzle is in a preferred embodiment, a nozzle of the Umflut founded which is designed to inject the water in the wider region of the tub.
  • the circulating device has the water supply line, in which a circulating pump is arranged.
  • the water supply line is connected at one end to the preferably lower portion of the tub and connected at the other end via the hydraulic oscillator with the nozzle, so that they water from the preferably lower portion of the tub by the circulating pump, the hydraulic oscillator and the nozzle in the other can preferably conduct upper portion of the tub, based on the operating position of the washing machine.
  • the at least one nozzle is arranged on a door sealing ring, which is arranged between a door for closing the household appliance and a loading opening for loading the household appliance.
  • This arranged on the door sealing ring nozzle may be formed integrally with him.
  • the nozzle is in this embodiment, a so-called Umflutungsdüse.
  • a heating element is arranged on and / or in the water supply line. More preferably, the heating element is adapted to generate steam from water, which is passed through the water supply via the fluidic oscillator through the nozzle into the drum.
  • the water supply line and the at least one nozzle are part of the Matschauaugeinein rinse, because thus a heating of laundry in a wet washing program of the washing machine is made possible.
  • the steam can be better distributed within the drum with the nozzle upstream of the fluidic oscillator.
  • the water-conducting household appliance is a dishwasher.
  • Dishwashers have at least one spray arm with nozzles, which is connected to a water supply line.
  • the household appliance is a washing machine.
  • a washing machine has nozzles in a Ein Hugheskasten with connected to a water supply line, a Mitchauglaseinflülungsdüse, which is connected to a water supply line and possibly a Umwutungsdüse, which is connected to a water supply line. Between all the above water supply lines and nozzles, an arrangement of the fluidic oscillator is possible and leads to an improvement in the washing machine efficiency.
  • Fig. 1 shows schematically a partial cross-sectional view of a water-conducting household appliance.
  • the water-conducting household appliance has a water supply line 2, a fluidic oscillator 3, a plurality of nozzles 1 and a plurality of further nozzles 1 '.
  • the plurality of nozzles 1 are arranged in a channel 4, while the plurality of further nozzles 1 'in a further channel 4' are arranged.
  • the fluidic oscillator 3 has an inlet 31, a flow chamber 32, a return channel 33, a further return channel 34 and an outlet 35.
  • the input 31 of the fluidic oscillator 3 is arranged adjacent to the water inlet 2, while the outlet 35 of the fluidic oscillator 3 is arranged adjacent to the channel 4 and the further channel 4 '.
  • the water (not shown) flows in the direction of the arrow through the water supply line 2, the inlet 31 into the flow chamber 32.
  • the water jet flowing into the flow chamber 32 automatically lays on one of the sides in the flow chamber, bounces against a wall 36 downstream of the flow chamber 32 and splits into two streams.
  • the first stream which is the main stream, leaves the fluidic oscillator 3 through the outlet 35 and flows into the channel 4, as shown in FIG Fig. 1 represented by the arrows.
  • the second stream (not shown) is passed through the further return passage 34 and again passed into the flow chamber 32 and pushes the flowing through the flow chamber 32 from the water supply line 2 water flow to another wall 37 in the flow chamber 32, wherein the water flow in split two streams.
  • the process is mirror-inverted: the first stream, which is the main stream, leaves the fluidic oscillator 3 through the output 35 into the further channel 4 ', the second stream is passed through the return channel 33 and again passed into the flow chamber 32 and pushes the flow of water flowing through the flow chamber 32 from the water supply line 2 to the wall 36 in the flow chamber 32, wherein the water flow in two streams splits and the further flow of the water continues as described above.
  • Fig. 2 shows the fluidic oscillator 3 from Fig. 1 in an enlarged cross-sectional view. Shown are exemplary dimensions that lead to the following explained operation.
  • the outlet nozzle 23 should be at a distance of max. 7.0 mm and an angle 24 of max. 20 ° to ensure the required return flow.
  • the width of the outlet nozzle 23 is here max. 6.5 mm.
  • the cross-section of a nozzle (see Fig. 1 ) is max. 2.4 mm with a max. Total number of 38 nozzles.
  • the amplitude is influenced by a tapered inlet nozzle with a distance 25 of max. 11 mm and an angle 26 of max. 14 °.
  • the distance 27 of the blocks must be at least 23.0 mm.
  • the frequency is influenced by the distance 28 of the wedge-shaped tapered blocks 21, which should be at least 15% smaller than the opening 25 of the inlet nozzle.
  • the distance 27 of the blocks should be at least 9.5 mm.
  • the width 29 of the feedback channel 30 should be at least 8.0 mm.
  • the total width B of the fluidic oscillator 3 should be at least 37 mm and the total length L should be at least 44 mm.

Abstract

Die Erfindung betrifft ein wasserführendes Haushaltsgerät, das mindestens eine Düse (1), eine Wasserzuleitung (2) und einen fluidischer Oszillator (3) aufweist, der zwischen der Düse (1) und der Wasserzuleitung (2) angeordnet ist.The invention relates to a water-conducting domestic appliance having at least one nozzle (1), a water supply line (2) and a fluidic oscillator (3) which is arranged between the nozzle (1) and the water supply line (2).

Description

Die Erfindung betrifft ein wasserführendes Haushaltsgerät. Das Haushaltsgerät weist mindestens eine Düse und eine Wasserzuleitung auf. Die Wasserzuleitung ist ausgebildet, Wasser zu der mindestens einen Düse zu leiten, so dass das Wasser aus der mindestens einen Düse austreten kann. Wenn die mindestens eine Düse eine unbewegliche Düse ist, kann sie nur in die durch ihre Geometrie vorgegebene Richtung strahlen. Wenn die Wasserzuleitung ausgebildet ist, Wasser zu einer Mehrzahl von Düsen zu leiten, wird der Druck an jeder einzelnen Düse verringert. Bei niedrigem Leitungsdruck kann der Druck zu niedrig sein, um beispielsweise eine gute Ausspülung mit dem durch die Düse geleiteten Wasser zu erzielen. Daher kann es beim Spülen mit Wasser aus der oder den Düsen zu Problemen kommen, weil der Druck nicht ausreichend ist und/oder die Richtung des aus der Düse austretenden Wasserstrahls nicht änderbar ist.The invention relates to a water-conducting household appliance. The household appliance has at least one nozzle and a water supply line. The water supply line is designed to direct water to the at least one nozzle, so that the water can escape from the at least one nozzle. If the at least one nozzle is an immovable nozzle, it can only radiate in the direction predetermined by its geometry. When the water supply line is configured to direct water to a plurality of nozzles, the pressure at each individual nozzle is reduced. At low line pressure, the pressure may be too low, for example, to achieve a good rinse with the guided through the nozzle water. Therefore, when flushing with water from the nozzle (s), problems may occur because the pressure is insufficient and / or the direction of the water jet issuing from the nozzle is not changeable.

Der Erfindung stellt sich somit das Problem, ein wasserführendes Haushaltsgerät bereitzustellen, bei dem auf einfache Weise der Druck auf eine Düse erhöhbar ist und/oder eine Richtung eines aus einer Düse austretenden Wasserstrahls änderbar ist.The invention thus presents the problem of providing a water-conducting household appliance, in which the pressure on a nozzle can be increased in a simple manner and / or a direction of a water jet issuing from a nozzle can be changed.

Erfindungsgemäß wird dieses Problem durch ein wasserführendes Haushaltsgerät mit den Merkmalen des Patentanspruchs 1 gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung ergeben sich aus den nachfolgenden Unteransprüchen.According to the invention this problem is solved by a water-conducting household appliance with the features of claim 1. Advantageous embodiments and further developments of the invention will become apparent from the following subclaims.

Erfindungsgemäß ist zwischen der mindestens einen Düse und der Wasserzuleitung ein fluidischer Oszillator angeordnet. Bei dem fluidischen Oszillator handelt es sich um ein Bauteil, das bei Wasserdurchfluss einen selbstoszillierenden Strahl ausstößt aber keine beweglichen Teile benötigt. Der fluidische Oszillator ist ein Bauteil, das eine selbsterregte Schwingung in seinem Inneren erzeugt, ohne dabei auf bewegliche Bauteile angewiesen zu sein, so dass ein periodisch oszillierender Strahl an einem Ausgang des fluidischen Oszillators erzeugt wird. Der Ausdruck "Oszillator" gibt an, dass es sich um ein Bauteil handelt, das oszillierend ausgebildet ist, d.h. einen oszillierenden Strahl an seinem Ausgang bei Wasserdurchtritt ausgibt, und der Ausdruck "fluidisch" gibt an, dass der Oszillator keine beweglichen Teile aufweist. Der fluidische Oszillator ist durch seine Auslegung d.h. insbesondere seine Geometrie und Dimensionierung in der Lage, den selbstoszillierenden Strahl bei Wasserdurchfluss auszustoßen. Er ist ein effektives, effizientes und praktisches Bauelement, das statisch ausgelegt ist. Der fluidische Oszillator ist zuverlässig, ausdauernd, robust, quasi wartungs- und zerstörungsfrei, weist keine beweglichen Teile auf, ist beliebig skalierbar, und eine Ausgangsgeschwindigkeit und -frequenz des Wassers aus ihm sind abhängig von seiner Geometrie einstellbar. Er ist daher in ein wasserführendes Haushaltsgerät jedweder Größe einfach integrierbar.According to the invention, a fluidic oscillator is arranged between the at least one nozzle and the water supply line. The fluidic oscillator is a component that emits a self-oscillating jet when there is a flow of water, but does not require any moving parts. The fluidic oscillator is a component that generates a self-excited oscillation in its interior, without relying on movable components, so that a periodically oscillating beam is generated at an output of the fluidic oscillator. The term "oscillator" indicates that it is a component that is oscillating, that is, that outputs an oscillating beam at its output upon water penetration, and the term "fluidic" indicates that the oscillator has no moving parts. The fluidic oscillator is able by its design ie in particular its geometry and dimensioning able to eject the self-oscillating beam at water flow. It is an effective, efficient and practical component that is designed statically. The fluidic oscillator is reliable, durable, robust, quasi maintenance and non-destructive, has no moving parts, is arbitrarily scalable, and an output speed and frequency of the water are out of it adjustable depending on its geometry. It is therefore easy to integrate into a water-conducting household appliance of any size.

Der fluidische Oszillator weist beispielsweise einen symmetrischen Aufbau aus einem Eingang, einer Strömungskammer, zwei Rücklaufkanälen und einem Ausgang auf und zeichnet sich durch eine selbsterregte Schwingung in seinem Inneren aus, sodass entweder ein oszillierender Freistrahl an seinem Ausgang bei Wasserdurchgang austritt oder ein periodisches Umschalten von zwei diskreten Ausgangseinheiten möglich ist, wenn der Ausgang beispielsweise durch eine Wand in zwei diskrete Ausgangseinheiten geteilt ist. Der fluidische Oszillator ist derart ausgelegt, dass sich bei Beaufschlagung mit Wasser der resultierende Wasserstrahl nach Durchströmen des Eingangs automatisch auf einer von mehreren Seiten in der Strömungskammer anlegt, stromab der Strömungskammer gegen eine Wand prallt und sich in zwei Ströme aufspaltet. Der erste Strom verlässt den fluidischen Oszillator durch den Ausgang bzw. eine der beiden Ausgangseinheiten. Der zweite Strom wird durch einen von zwei Rücklaufkanälen geleitet und darüber zurück in die Strömungskammer geleitet und drückt den durch die Strömungskammer strömenden Wasserstrom an eine weitere Wand der Strömungskammer. Nun verläuft der Prozess spiegelverkehrt ab und der Wasserstrahl verlässt den fluidischen Oszillator durch den Ausgang in eine andere Richtung als vorher bzw. durch die andere Ausgangseinheit. Der Prozess wird re-initialisiert, sodass der den fluidischen Oszillator verlassende Wasserstahl oszillierend ist.The fluidic oscillator has, for example, a symmetrical structure of an input, a flow chamber, two return channels and an output and is characterized by a self-excited oscillation in its interior, so that either an oscillating free jet exits at its exit at water passage or a periodic switching of two discrete output units is possible when the output is divided, for example by a wall in two discrete output units. The fluidic oscillator is designed so that when exposed to water, the resulting water jet, after flowing through the inlet, automatically rests on one of several sides in the flow chamber, bounces against a wall downstream of the flow chamber, and splits into two streams. The first current leaves the fluidic oscillator through the output or one of the two output units. The second stream is passed through one of two return passages and then passed back into the flow chamber and pushes the flow of water through the flow chamber to another wall of the flow chamber. Now, the process is mirror-inverted and the water jet leaves the fluidic oscillator through the exit in a different direction than before or through the other output unit. The process is re-initialized so that the fluid steel leaving the fluidic oscillator is oscillating.

Die mit der Erfindung erreichbaren Vorteile bestehen neben der Möglichkeit des Richtens des Wasserstrahls in mehr als eine Richtung darin, dass, wenn mehr als eine Düse vorhanden ist, die Düsen zeitversetzt angesteuert werden können.The achievable with the present invention consist in addition to the possibility of directing the water jet in more than one direction in that, if more than one nozzle is present, the nozzles can be controlled with a time delay.

Die Wasserzuleitung kann beispielsweise eine Wasserzuführung sein, die ein externes Wassernetz mit dem wasserführenden Haushaltsgerät verbindet. Bei der Wasserzuleitung kann es sich weiterhin um eine Wasserzuleitung handeln, die ausgelegt ist, Wasser von einem Bereich des Haushaltsgeräts in einen weiteren Bereich des Haushaltsgeräts zu fördern. Die Wasserzuleitung ist insbesondere ausgelegt, Wasser als Flüssigkeit und/oder Dampf zu leiten. Die Wasserzuleitung ist vorzugsweise ausgelegt, Wasser in flüssiger und/oder gasförmiger Form zu leiten, wobei dem Wasser ggf. eine oder mehrere weitere Komponenten wie beispielsweise Waschmittel, Spülmittel oder dergleichen zugesetzt sein können.The water supply may for example be a water supply that connects an external water network with the water-bearing household appliance. The water supply may further be a water supply, which is designed to promote water from one area of the household appliance in another area of the household appliance. The water supply is designed in particular to conduct water as liquid and / or steam. The water supply line is preferably designed to conduct water in liquid and / or gaseous form, wherein the water may optionally be added to one or more further components such as detergents, dishwashing or the like.

Bei der mindestens einen Düse handelt es sich vorzugsweise um eine unbewegliche Düse. Die mindestens eine Düse kann eine einzelne der Wasserzuleitung zugeordnete Düse sein. Der fluidische Oszillator kann zwischen der Wasserzuleitung und der Düse direkt d.h. ohne weitere Bauteile dazwischen platziert sein. Alternativ können der Wasserzuleitung mehrere Düsen zugeordnet sein, die in mehreren Kanälen angeordnet oder ausgebildet sind. Der fluidische Oszillator ist dann vorzugsweise zwischen der Wasserzuleitung und den die Düsen aufweisenden Kanälen angeordnet.The at least one nozzle is preferably an immovable nozzle. The at least one nozzle may be a single nozzle associated with the water supply line. The fluidic oscillator can be placed directly between the water supply line and the nozzle, ie without any additional components in between. Alternatively, the water supply several Be assigned nozzles that are arranged or formed in multiple channels. The fluidic oscillator is then preferably arranged between the water supply line and the channels having the nozzles.

Vorzugsweise ist der fluidische Oszillator mit der Wasserzuleitung und der Düse derart verbunden, dass Wasser über die Wasserzuleitung durch den fluidischen Oszillator in eine Düse geleitet wird. Wenn der Wasserzuleitung eine Düse zugeordnet ist, wird mittels des fluidischen Oszillators der Strahlbereich der Düse vergrößert.Preferably, the fluidic oscillator is connected to the water supply line and the nozzle such that water is passed via the water supply line through the fluidic oscillator in a nozzle. If the water supply line is associated with a nozzle, the jet area of the nozzle is increased by means of the fluidic oscillator.

In einer bevorzugten Ausführungsform ist eine Düse in einem Kanal angeordnet und eine weitere Düse in einem weiteren Kanal angeordnet. Vorzugsweise sind der Kanal und der weitere Kanal zu einem Ausgang des fluidischen Oszillators angrenzend angeordnet. Der fluidische Oszillator ist derart zwischen der Wasserzuleitung und dem Kanal und dem weiteren Kanal angeordnet, der er bei Betrieb das aus der Wasserzuleitung durch ihn strömende Wasser periodisch umschaltend in den Kanal und den weiteren Kanal leitet, sodass die eine Düse und die weitere Düse abwechselnd mit Wasser versorgt werden. Dadurch kann der Druck auf die Düsen vergrößert werden.In a preferred embodiment, one nozzle is arranged in a channel and another nozzle is arranged in a further channel. Preferably, the channel and the further channel are arranged adjacent to an output of the fluidic oscillator. The fluidic oscillator is arranged between the water supply line and the channel and the further channel, which it passes during operation, the water flowing from the water supply through it periodically switching water into the channel and the other channel, so that a nozzle and the other nozzle alternately with Be supplied with water. This can increase the pressure on the nozzles.

Durch die periodische Umschaltung wird idealerweise immer nur ein Kanal mit Wasser beaufschlagt. Dadurch erhöht sich der Druck und demzufolge die Austrittsgeschwindigkeit an der jeweiligen Düse, wodurch es zu einer besseren Ausspülung eines Waschmittels in einer Waschmittelschublade kommt.Due to the periodic switching, ideally only one channel is always supplied with water. This increases the pressure and, consequently, the exit velocity at the respective nozzle, resulting in a better rinsing of a detergent in a detergent drawer.

Das wasserführende Haushaltsgerät weist vorzugsweise einen Einspülkasten auf, der den Kanal und den weiteren Kanal aufweist. Das Haushaltsgerät kann eine Waschmaschine sein, die einen Einspülkasten mit Fächern aufweist, in denen mehrere Kanäle angeordnet sind, die jeweils eine Vielzahl von Düsen aufweisen. Beispielsweise weist ein Fach einen Kanal und einen weiteren Kanal auf, die voneinander getrennt sind und jeweils eine Vielzahl von Düsen aufweisen. Der fluidische Oszillator ist derart in dem Haushaltsgerät angeordnet und ausgelegt, dass er bei Wasserzufuhr dem Kanal und dem weiteren Kanal des Einspülkastens abwechselnd Wasser zuführt.The water-conducting household appliance preferably has a Einspülkasten having the channel and the other channel. The household appliance may be a washing machine having a Einspülkasten with compartments in which a plurality of channels are arranged, each having a plurality of nozzles. For example, a compartment has a channel and a further channel, which are separated from each other and each having a plurality of nozzles. The fluidic oscillator is arranged in the household appliance and designed such that it alternately supplies water to the channel and the further channel of the Einspülkastens when water is supplied.

In einer alternativ bevorzugten Ausführungsform ist die mindestens eine Düse ausgelegt, Wasser in eine Trommel des Haushaltsgeräts und/oder an die Tür zum Verschließen des Haushaltsgeräts zu leiten. Bei dem Haushaltsgerät handelt es sich beispielsweise um eine frontbeladbare Waschmaschine, die einen Laugenbehälter zur Aufnahme von Waschflüssigkeit, eine drehbar in dem Laugenbehälter gelagerte Trommel zur Aufnahme von Wäsche, eine Beladungsöffnung zum Beladen der Trommel mit der Wäsche und eine Tür zum Verschließen der Beladungsöffnung aufweist, wobei die Tür ein Schauglas aufweist. Die Wasserzuleitung und die mindestens einen Düse sind dann beispielsweise Teil einer Türschauglaseinspülung, die ausgelegt ist, Wasser sowohl auf das Schauglas als auch in die Trommel zu leiten. Eine schnellere und bessere Durchfeuchtung der Wäsche kann erzielt werden, wenn der Düse der fluidische Oszillator vorgeschaltet ist. Die Düse kann dadurch in über einen größeren Bereich hinweg strahlen.In an alternative preferred embodiment, the at least one nozzle is designed to direct water into a drum of the household appliance and / or to the door for closing the household appliance. The household appliance is, for example, a front-loading washing machine which has a tub for holding washing liquid, a drum rotatably mounted in the tub for receiving laundry, a loading opening for loading the drum with the laundry and a door for closing the loading opening, the door having a sight glass. The water supply line and the at least one nozzle are then part of a Door sight glass purging designed to direct water to both the sight glass and the drum. A faster and better moisture penetration of the laundry can be achieved if the nozzle of the fluidic oscillator is connected upstream. The nozzle can thereby radiate over a larger area.

Die Waschmaschine kann weiterhin eine Umfluteinrichtung aufweisen, die ausgelegt ist, Wasser aus einem Bereich des Laugenbehälters in einen weiteren Bereich des Laugenbehälters zu fördern. Die mindestens eine Düse ist in einer bevorzugten Ausführungsform eine Düse der Umfluteinrichtung, die ausgelegt ist, das Wasser in den weiteren Bereich des Laugenbehälters zu spritzen. Die Umfluteinrichtung weist die Wasserzuleitung auf, in der eine Umflutpumpe angeordnet ist. Die Wasserzuleitung ist an einem Ende mit dem vorzugsweise unteren Bereich des Laugenbehälters verbunden und am anderen Ende über den hydraulichen Oszillator mit der Düse verbunden, sodass sie Wasser aus dem vorzugsweise unteren Bereich des Laugenbehälters durch die Umflutpumpe, den hydraulischen Oszillator und die Düse in den weiteren vorzugsweise oberen Bereich des Laugenbehälters leiten kann, bezogen auf die betriebsgemäße Aufstellposition der Waschmaschine. Vorzugsweise ist die mindestens eine Düse an einem Türdichtring angeordnet, der zwischen einer Tür zum Verschließen des Haushaltsgeräts und einer Beladungsöffnung zum Beladen des Haushaltsgeräts angeordnet ist. Diese am Türdichtring angeordnete Düse kann mit ihm integral ausgeformt sein. Die Düse stellt in dieser Ausführungsform eine so-genannte Umflutungsdüse dar.The washing machine may further comprise a circulating device, which is designed to convey water from one region of the tub into a further region of the tub. The at least one nozzle is in a preferred embodiment, a nozzle of the Umfluteinrichtung which is designed to inject the water in the wider region of the tub. The circulating device has the water supply line, in which a circulating pump is arranged. The water supply line is connected at one end to the preferably lower portion of the tub and connected at the other end via the hydraulic oscillator with the nozzle, so that they water from the preferably lower portion of the tub by the circulating pump, the hydraulic oscillator and the nozzle in the other can preferably conduct upper portion of the tub, based on the operating position of the washing machine. Preferably, the at least one nozzle is arranged on a door sealing ring, which is arranged between a door for closing the household appliance and a loading opening for loading the household appliance. This arranged on the door sealing ring nozzle may be formed integrally with him. The nozzle is in this embodiment, a so-called Umflutungsdüse.

Vorzugsweise ist ein Heizelement an und/oder in der Wasserzuleitung angeordnet. Bevorzugter ist das Heizelement ausgelegt, aus Wasser Dampf zu erzeugen, der über die Wasserzuleitung über den fluidischen Oszillator durch die Düse in die Trommel geleitet wird. Diese Ausgestaltung ist besonders vorteilhaft, wenn die Wasserzuleitung und die mindestens einen Düse Teil der Türschauglaseinspülung sind, weil damit ein Aufheizen von Wäsche bei einem Feuchtwaschprogramm der Waschmaschine ermöglicht wird. Der Dampf kann mit der Düse, der der fluidische Oszillator vorgeschaltet ist, besser innerhalb der Trommel verteilt werden.Preferably, a heating element is arranged on and / or in the water supply line. More preferably, the heating element is adapted to generate steam from water, which is passed through the water supply via the fluidic oscillator through the nozzle into the drum. This embodiment is particularly advantageous if the water supply line and the at least one nozzle are part of the Türschauaugeinein rinse, because thus a heating of laundry in a wet washing program of the washing machine is made possible. The steam can be better distributed within the drum with the nozzle upstream of the fluidic oscillator.

In einer bevorzugten Ausführungsform handelt es sich bei dem wasserführenden Haushaltsgerät um eine Geschirrspülmaschine. Geschirrspülmaschinen weisen mindestens einen Sprüharm mit Düsen auf, der mit einer Wasserzuleitung verbunden ist. Mittels Integration des fluidischen Oszillators zwischen der Wasserzuleitung und dem Sprüharm bzw. den Düsen kann eine bessere Wasserverteilung in einem Reinigungsraum der Geschirrspülmaschine erreicht werden.In a preferred embodiment, the water-conducting household appliance is a dishwasher. Dishwashers have at least one spray arm with nozzles, which is connected to a water supply line. By means of integration of the fluidic oscillator between the water supply line and the spray arm or the nozzles, a better water distribution in a cleaning space of the dishwasher can be achieved.

Bevorzugter ist das Haushaltsgerät eine Waschmaschine. Wie vorstehend zumindest teilweise schon erwähnt, weist eine Waschmaschine Düsen in einem Einspülkasten, die mit einer Wasserzuleitung verbunden sind, eine Türschauglaseinspülungsdüse, die mit einer Wasserzuleitung verbunden ist und ggf. eine Umflutungsdüse auf, die mit einer Wasserzuleitung verbunden ist. Zwischen allen vorstehenden Wasserzuleitungen und Düsen ist eine Anordnung des fluidischen Oszillators möglich und führt zu einer Verbesserung der Waschmaschineneffizienz.More preferably, the household appliance is a washing machine. As mentioned above at least partially, a washing machine has nozzles in a Einspülkasten with connected to a water supply line, a Türchauglaseinflülungsdüse, which is connected to a water supply line and possibly a Umwutungsdüse, which is connected to a water supply line. Between all the above water supply lines and nozzles, an arrangement of the fluidic oscillator is possible and leads to an improvement in the washing machine efficiency.

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

Fig. 1
schematisch eine Teil-Querschnittsansicht eines wasserführenden Haushaltsgeräts.
Fig. 2
den fluidischen Oszillator aus Fig. 1 in einer vergrößerten Querschnittsansicht
An embodiment of the invention is shown purely schematically in the drawings and will be described in more detail below. It shows
Fig. 1
schematically a partial cross-sectional view of a water-conducting household appliance.
Fig. 2
the fluidic oscillator Fig. 1 in an enlarged cross-sectional view

Fig. 1 zeigt schematisch eine Teil-Querschnittsansicht eines wasserführenden Haushaltsgeräts. Das wasserführende Haushaltsgerät weist eine Wasserzuleitung 2, einen fluidischen Oszillator 3, eine Mehrzahl an Düsen 1 und eine Mehrzahl an weiteren Düsen 1' auf. Die Mehrzahl an Düsen 1 sind in einem Kanal 4 angeordnet, während die Mehrzahl an weiteren Düsen 1' in einem weiteren Kanal 4' angeordnet sind. Der fluidische Oszillator 3 weist einen Eingang 31, eine Strömungskammer 32, einen Rücklaufkanal 33, einen weiteren Rücklaufkanal 34 und einen Ausgang 35 auf. Der Eingang 31 des fluidischen Oszillators 3 ist angrenzend zu dem Wasserzulauf 2 angeordnet, während der Ausgang 35 des fluidischen Oszillators 3 angrenzend zu dem Kanal 4 und dem weiteren Kanal 4' angeordnet ist. Fig. 1 shows schematically a partial cross-sectional view of a water-conducting household appliance. The water-conducting household appliance has a water supply line 2, a fluidic oscillator 3, a plurality of nozzles 1 and a plurality of further nozzles 1 '. The plurality of nozzles 1 are arranged in a channel 4, while the plurality of further nozzles 1 'in a further channel 4' are arranged. The fluidic oscillator 3 has an inlet 31, a flow chamber 32, a return channel 33, a further return channel 34 and an outlet 35. The input 31 of the fluidic oscillator 3 is arranged adjacent to the water inlet 2, while the outlet 35 of the fluidic oscillator 3 is arranged adjacent to the channel 4 and the further channel 4 '.

Bei Betrieb, wenn der Wasserzuleitung Wasser zugeführt wird, strömt das Wasser (nicht gezeigt) in Pfeilrichtung durch die Wasserzuleitung 2, den Eingang 31 in die Strömungskammer 32. Der in die Strömungskammer 32 strömende Wasserstrahl legt automatisch auf einer der Seiten in der Strömungskammer an, prallt stromab der Strömungskammer 32 gegen eine Wand 36 und spaltet sich in zwei Ströme auf. Der erste Strom, der den Hauptstrom darstellt, verlässt den fluidischen Oszillator 3 durch den Ausgang 35 und strömt in den Kanal 4, wie es in der Fig. 1 durch die Pfeile dargestellt ist. Der zweite Strom (nicht gezeigt) wird durch den weiteren Rücklaufkanal 34 geleitet und darüber erneut in die Strömungskammer 32 geleitet und drückt den durch die Strömungskammer 32 aus der Wasserzuleitung 2 strömenden Wasserstrom an eine weitere Wand 37 in der Strömungskammer 32, wobei sich der Wasserstrom in zwei Ströme spaltet. Nun verläuft der Prozess spiegelverkehrt ab: Der erste Strom, der den Hauptstrom darstellt, verlässt den fluidischen Oszillator 3 durch den Ausgang 35 in den weiteren Kanal 4', der zweite Strom wird durch den Rücklaufkanal 33 geleitet und darüber erneut in die Strömungskammer 32 geleitet und drückt den durch die Strömungskammer 32 aus der Wasserzuleitung 2 strömenden Wasserstrom an die Wand 36 in der Strömungskammer 32, wobei sich der Wasserstrom in zwei Ströme spaltet und das weitere Strömen des Wassers wie vorstehend beschrieben weiterläuft.In operation, when water is supplied to the water supply line, the water (not shown) flows in the direction of the arrow through the water supply line 2, the inlet 31 into the flow chamber 32. The water jet flowing into the flow chamber 32 automatically lays on one of the sides in the flow chamber, bounces against a wall 36 downstream of the flow chamber 32 and splits into two streams. The first stream, which is the main stream, leaves the fluidic oscillator 3 through the outlet 35 and flows into the channel 4, as shown in FIG Fig. 1 represented by the arrows. The second stream (not shown) is passed through the further return passage 34 and again passed into the flow chamber 32 and pushes the flowing through the flow chamber 32 from the water supply line 2 water flow to another wall 37 in the flow chamber 32, wherein the water flow in split two streams. Now, the process is mirror-inverted: the first stream, which is the main stream, leaves the fluidic oscillator 3 through the output 35 into the further channel 4 ', the second stream is passed through the return channel 33 and again passed into the flow chamber 32 and pushes the flow of water flowing through the flow chamber 32 from the water supply line 2 to the wall 36 in the flow chamber 32, wherein the water flow in two streams splits and the further flow of the water continues as described above.

Fig. 2 zeigt den fluidischen Oszillator 3 aus Fig. 1 in einer vergrößerten Querschnittsansicht. Gezeigt werden beispielhafte Maße, die zu der folgend erklärten Funktionsweise führen. Fig. 2 shows the fluidic oscillator 3 from Fig. 1 in an enlarged cross-sectional view. Shown are exemplary dimensions that lead to the following explained operation.

Die Auslegung der Geometrie im Folgenden basiert auf einem Volumenstrom V von mindestens 4 Liter / Minute (l/min) vor dem fluidischen Oszillator 3. Nach dem fluidischen Oszillator ergibt sich durch diese Geometrie eine Pendelbewegung (Oszillation) mit einer Frequenz von mindestens 2 Hz, sodass die nachfolgenden separaten Kanäle 35 abwechselnd mit einer Amplitude von jeweils mindestens 3.9 l/min durchströmt werden. Diese periodische Pendelbewegung mit einer Frequenz von 2 Hz und maximaler Amplitude setzt nach einem Zeitintervall von max. 2 Sekunden ein.The interpretation of the geometry below is based on a volume flow V of at least 4 liters / minute (l / min) in front of the fluidic oscillator 3. According to the fluidic oscillator results from this geometry a pendulum motion (oscillation) with a frequency of at least 2 Hz, so that the subsequent separate channels 35 are alternately flowed through with an amplitude of at least 3.9 l / min. This periodic oscillation with a frequency of 2 Hz and maximum amplitude sets after a time interval of max. 2 seconds on.

Um derartige Frequenz, Amplitude und Zeitintervall zu erreichen, kann die Geometrie beispielsweise wie folgt ausgebildet werden:

  • Der fluidische Oszillator 3 wird idealerweise von einer voll ausgebildeten Strömung V beströmt. Erweist keilförmige Blockspitzen 21 mit einem Winkel 22 von max. 25° auf, um durch eine scharfe Abrisskante im Nachlauf ein Totwassergebiet T (Rezirkulationsblase) zu erzeugen.
To achieve such frequency, amplitude and time interval, the geometry may be formed, for example, as follows:
  • The fluidic oscillator 3 is ideally flowed through by a fully formed flow V. Proves wedge-shaped block tips 21 with an angle 22 of max. 25 °, in order to produce a dead-end zone T (recirculation bubble) by means of a sharp trailing edge in the wake.

Die Auslassdüse 23 sollte einen Abstand von max. 7.0 mm und einen Winkel 24 von max. 20° haben, um die benötigte Rückströmmenge zu gewährleisten. Die Breite der Auslassdüse 23 beträgt hier max. 6.5 mm. Der Querschnitt einer Düse (siehe Fig. 1) beträgt hier max. 2.4 mm bei einer max. Gesamtanzahl von 38 Düsen.The outlet nozzle 23 should be at a distance of max. 7.0 mm and an angle 24 of max. 20 ° to ensure the required return flow. The width of the outlet nozzle 23 is here max. 6.5 mm. The cross-section of a nozzle (see Fig. 1 ) is max. 2.4 mm with a max. Total number of 38 nozzles.

Die Amplitude wird beeinflusst von einer konisch zulaufenden Einlassdüse mit einem Abstand 25 von max. 11 mm und einem Winkel 26 von max. 14°. Der Abstand 27 der Blöcke muss mindestens 23.0 mm betragen.The amplitude is influenced by a tapered inlet nozzle with a distance 25 of max. 11 mm and an angle 26 of max. 14 °. The distance 27 of the blocks must be at least 23.0 mm.

Die Frequenz wird beeinflusst vom Abstand 28 der keilförmig zulaufenden Blöcke 21, welcher mindestens 15% kleiner sein sollte als die Öffnung 25 der Einlaufdüse. Der Abstand 27 der Blöcke sollte mindestens 9.5 mm betragen. Die Breite 29 des Rückkopplungs-Kanals 30 sollte mindestens 8.0 mm betragen.The frequency is influenced by the distance 28 of the wedge-shaped tapered blocks 21, which should be at least 15% smaller than the opening 25 of the inlet nozzle. The distance 27 of the blocks should be at least 9.5 mm. The width 29 of the feedback channel 30 should be at least 8.0 mm.

Die Gesamtbreite B des Fluidischen Oszillators 3 sollte mindestens 37 mm und die Gesamtlänge L sollte mindestens 44 mm betragen.The total width B of the fluidic oscillator 3 should be at least 37 mm and the total length L should be at least 44 mm.

Claims (10)

Wasserführendes Haushaltsgerät, aufweisend mindestens eine Düse (1) und eine Wasserzuleitung (2), dadurch gekennzeichnet, dass zwischen der mindestens einen Düse (1) und der Wasserzuleitung (2) ein fluidischer Oszillator (3) angeordnet ist.Water-conducting domestic appliance, comprising at least one nozzle (1) and a water supply line (2), characterized in that between the at least one nozzle (1) and the water supply line (2) a fluidic oscillator (3) is arranged. Wasserführendes Haushaltsgerät nach Anspruch 1, dadurch gekennzeichnet, dass der fluidische Oszillator (3) mit der Wasserzuleitung (2) und der mindestens einen Düse (1) derart verbunden ist, dass Wasser über die Wasserzuleitung (2) durch den fluidischen Oszillator (3) in eine Düse (1) geleitet wird.Water-conducting domestic appliance according to claim 1, characterized in that the fluidic oscillator (3) with the water supply line (2) and the at least one nozzle (1) is connected such that water through the water supply line (2) through the fluidic oscillator (3) in a nozzle (1) is passed. Wasserführendes Haushaltsgerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass eine Düse (1) in einem Kanal (4) angeordnet ist und eine weitere Düse (1') in einem weiteren Kanal (4') angeordnet ist.Water-conducting household appliance according to claim 1 or 2, characterized in that a nozzle (1) in a channel (4) is arranged and a further nozzle (1 ') in a further channel (4') is arranged. Wasserführendes Haushaltsgerät nach Anspruch 3, dadurch gekennzeichnet, dass der Kanal (4) und der weitere Kanal (4') angrenzend zu einem Ausgang des fluidischen Oszillator (3) angeordnet sind.Water-conducting household appliance according to claim 3, characterized in that the channel (4) and the further channel (4 ') are arranged adjacent to an output of the fluidic oscillator (3). Wasserführendes Haushaltsgerät nach einem der vorangehenden Ansprüche, gekennzeichnet durch einen Einspülkasten, der den Kanal (4) und den weiteren Kanal (4') aufweist.Water-conducting domestic appliance according to one of the preceding claims, characterized by a dispenser box which has the channel (4) and the further channel (4 '). Wasserführendes Haushaltsgerät nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die mindestens eine Düse (1) ausgelegt ist, Wasser in eine Trommel des Haushaltsgeräts und/oder an die Tür zum Verschließen des Haushalsgeräts zu leiten.Water-conducting household appliance according to claim 1 or 2, characterized in that the at least one nozzle (1) is adapted to direct water into a drum of the household appliance and / or to the door for closing the Haushalsgeräts. Wasserführendes Haushaltsgerät nach einem der Ansprüche 1, 2 oder 6, dadurch gekennzeichnet, dass die mindestens eine Düse (1) an einem Türdichtring angeordnet ist, der zwischen einer Tür zum Verschließen des Haushaltsgeräts und einer Beladungsöffnung zum Beladen des Haushaltsgeräts angeordnet ist.Water-conducting household appliance according to one of claims 1, 2 or 6, characterized in that the at least one nozzle (1) is arranged on a door sealing ring which is arranged between a door for closing the household appliance and a loading opening for loading the household appliance. Wasserführendes Haushaltsgerät nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass ein Heizelement an und/oder in der Wasserzuleitung angeordnet ist.Water-conducting household appliance according to one of the preceding claims, characterized in that a heating element is arranged on and / or in the water supply line. Wasserführendes Haushaltsgerät nach Anspruch 8, dadurch gekennzeichnet, dass das Heizelement ausgelegt ist, aus Wasser Dampf zu erzeugen, der über die Wasserzuleitung (2) mittels des fluidischen Oszillators (3) durch die Düse (1) in die Trommel geleitet wird.Water-conducting household appliance according to claim 8, characterized in that the heating element is designed to generate steam from water, which is passed through the water supply line (2) by means of the fluidic oscillator (3) through the nozzle (1) in the drum. Wasserführendes Haushaltsgerät nach einem der vorangehenden Ansprüchen, dadurch gekennzeichnet, dass es eine Waschmaschine oder Geschirrspülmaschine ist.Water-conducting household appliance according to one of the preceding claims, characterized in that it is a washing machine or dishwasher.
EP16193461.7A 2015-10-13 2016-10-12 Water-bearing household appliance Active EP3155949B1 (en)

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CN112376205A (en) * 2020-11-30 2021-02-19 无锡小天鹅电器有限公司 Water supply control method, workbench assembly and washing machine

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IT236034Y1 (en) * 1997-04-09 2000-07-26 Elbi Int Spa WATER SUPPLY DEVICE TO THE WASHING CHAMBER OF A WASHING MACHINE.

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EP1357235A1 (en) * 2001-01-05 2003-10-29 Toto Ltd. Water discharging device
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Publication number Priority date Publication date Assignee Title
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CN112376205B (en) * 2020-11-30 2023-12-15 无锡小天鹅电器有限公司 Water supply control method, workbench part and washing machine

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DE102015117392A1 (en) 2017-04-13
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PL3155949T3 (en) 2021-02-08

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