EP2022884A1 - Dispensing unit for a washing machine and washing machine - Google Patents

Dispensing unit for a washing machine and washing machine Download PDF

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Publication number
EP2022884A1
EP2022884A1 EP08012188A EP08012188A EP2022884A1 EP 2022884 A1 EP2022884 A1 EP 2022884A1 EP 08012188 A EP08012188 A EP 08012188A EP 08012188 A EP08012188 A EP 08012188A EP 2022884 A1 EP2022884 A1 EP 2022884A1
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EP
European Patent Office
Prior art keywords
side walls
washing machine
chamber
roughness
detergent
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Granted
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EP08012188A
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German (de)
French (fr)
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EP2022884B1 (en
Inventor
Michael Finke
Robert Müther
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Miele und Cie KG
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Miele und Cie KG
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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 
    • D06F39/02—Devices for adding soap or other washing agents

Definitions

  • the invention relates to a Ein Hughesvorrauma for flushing detergent or treatment agents in a washing machine and a washing machine with such a dispenser.
  • Known Ein Schweizervoriquesen have a container which defines at least one chamber with a bottom and side walls.
  • the chamber is suitable and equipped to absorb detergent. It is further provided that the detergent can be flushed out of the chamber with a liquid.
  • a means for distributing the liquid is provided, with which distributed over several locations, the liquid can be flushed into the chamber to flush detergent from the chamber.
  • Such a distribution means has for the flushing of the liquid in the chamber usually one or more nozzles.
  • the invention has for its object to improve a dispenser to the effect that the detergent is rinsed as completely as possible from the chamber.
  • the surfaces of the soil are hydrophobic and the surfaces of the side walls of a chamber are hydrophilic. Further, it is possible that the floor and the surfaces have different roughnesses, the floor having a lower roughness than the side walls. This can be an instrument to produce the different hydrophobic or hydrophilic properties of the floor and the side walls. Hydrophobic refers in this context to a poor wettability of the surface with water, while hydrophilic means a good wettability of the surface with water.
  • the side walls of a chamber of a dispenser according to the invention can have a groove as a transition region to the bottom. In this groove, it also often leads to residues of detergent residues. To reduce this, the area of the groove with the low roughness is designed.
  • the chamber of the flushing device consists of a plastic material, wherein the roughness is impressed into the surface of the material itself. This is easily provided by the injection molding tool itself having the predetermined roughness for the respective surfaces.
  • the different roughness of the surfaces can also be produced by additional coatings or the like.
  • the roughness of the soil is less than or equal to 1 micron.
  • the roughness of the soil is less than or equal to 0.1 microns. Detergent residues can adhere only slightly to this extremely smooth floor, so that rinsing is even further improved.
  • the roughness of the side walls is advantageously carried out greater than 3 microns. This ensures that the water on the side walls does not drain off too quickly and provides a surface wetting. This prevents detergent residues from adhering to the sidewalls. With detergent residues already attached, the water can creep along the surface, releasing the detergent residue. To improve the effect, a roughness of greater than or equal to 4 ⁇ m is used.
  • the object is also achieved with a washing machine with a dispenser, as described above.
  • washing machine W is externally constructed as a known from the prior art washing machine.
  • a known for a washing machine of the front loader type door T via a washing drum of the washing machine W for filling or removal of the laundry is accessible.
  • a control and display panel B is provided in an area above the door T in an area above the door T in an area above the door T in an area above the door T in an area above the door T in an area above the door T is on the front of the washing machine W a control and display panel B is provided on which various control buttons and display elements are provided. By pressing the buttons, the washing machine W can be controlled. In particular, a program selection is possible.
  • the dispenser E is provided at the usual place in washing machines in the upper left corner on the front side of the washing machine W.
  • the directions refer to the operating position of the washing machine W.
  • the dispenser E includes a container 3, which can be pulled out in the manner of a drawer to fill the detergent in chambers of the container 3.
  • the essence of the dispenser E which is located within the washing machine W, is in Fig. 2 shown.
  • the essential parts are formed by an extendable container 3, a distribution means 2 and a housing (not shown).
  • the container 3 is arranged as a displaceable part below the distribution means 2.
  • the container 3 (see in particular Fig. 3 ) has three chambers 3A, 3B, 3C, wherein all three chambers 3A, 3B, 3C are suitable and adapted for filling of detergents.
  • the chamber 3A or the chamber 3B are provided for receiving detergents or powdery detergents for a main wash or pre-wash.
  • the detergent container 3C is provided for receiving liquid fabric softener.
  • the chamber 3C is provided in a front area of the container 3, while the chambers 3A, 3B are arranged side by side in the middle and rear area.
  • the bottom 31 of the chamber 3A and the chamber 3B is inclined backwards.
  • the chambers 3A and 3B are bounded by a bottom 31 and side walls 32.
  • a back wall is not provided. Due to the lack of back wall, it is possible that liquid that has been flushed into the chambers 3A, 3B, on the rear side of the container 3 from the chambers 3A, 3B runs out to get into the tub or in the washing drum.
  • the distribution means 2 is intended to flush water at different locations into the chambers 3A, 3B, 3C.
  • the distribution means 2 is designed so that water can be flushed into each chamber separately.
  • the distribution of the liquid in the respective sections 2A1, 2A2, 2A3 via a so-called water switch (not shown), which in turn is controlled by the controller of the washing machine W as a function of the wash program.
  • the first section of the distribution means 2A is associated with the first chamber 3A and is divided into three sections.
  • a number of nozzles 24, 25, 26 are provided, via which the liquid can be flushed into the chamber 3A.
  • the nozzles 24, 25, 26 are aligned so that the water can be sprayed against sidewalls 32 and the floor 31.
  • the surface of the bottom 31 of at least the first chamber 3A is designed to be hydrophobic, so that liquids roll off the bottom 31 and hardly have the opportunity to wet the bottom 31.
  • the surface of the groove-shaped transition region 33 is at least partially also made hydrophobic.
  • the side walls 32 of at least the first chamber 3A are made hydrophilic, so that liquids wet the side walls 32 well and spread well on the side walls 32. Only in a directly adjacent to the bottom 31 transition region of the side walls 32, which is formed as a groove 33, and the side walls 32 may be made hydrophobic in this area.
  • the hydrophobization of the floor 31 or the hydrophilization of the side walls 32 is achieved by different roughnesses of the bottom 31 and the side walls 32.
  • the bottom 31 has, for example, an average roughness with a depth of less than or equal to 0.1 ⁇ m, while the average roughness of the side walls 32 is approximately 4 ⁇ m.
  • the different degrees of roughness can be achieved by a corresponding surface of the tools used to make the container 3. It is also possible to achieve the different roughness values or the different wettability for water by coatings of the surfaces or the like.
  • the aftertreatment of the surfaces after the production of the container 3 is conceivable, for example by chemicals or mechanical processing, such as grinding or polishing.
  • the groove-shaped transition region 33 is likewise provided with a low roughness, here of less than or equal to 0.1 ⁇ m depth, so that the surface is also in this region is adjusted hydrophobic.
  • the low roughness of the bottom 31 or the transition region 33 is achieved by a very smooth mold for the injection molding.
  • the higher roughness for the sidewalls 32 is achieved by bringing the tool to the desired roughness, as described above, in this area by means of a polish or so-called polish.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Detergent Compositions (AREA)

Abstract

The device has a container (3) defining chambers (3A) with a base (31) und a side wall (32). The chamber is adapted and arranged to receive a washing agent, such that washing agent is rinsed with fluid on the chamber. Upper surfaces of the base and the side wall are formed to be hydrophobic and hydrophilic, respectively. The side wall includes a channel (33) as a transition region for the base, where the channel and the base are formed to be hydrophobic. The upper surfaces of the base and the side wall include roughness, which are different from each other.

Description

Die Erfindung betrifft eine Einspülvorrichtung zum Einspülen von Waschmittel oder Behandlungsmitteln in eine Waschmaschine und eine Waschmaschine mit einer solchen Einspülvorrichtung.The invention relates to a Einspülvorrichtung for flushing detergent or treatment agents in a washing machine and a washing machine with such a dispenser.

Bekannte Einspülvorrichtungen weisen einen Behälter auf, der mit einem Boden und Seitenwänden zumindest eine Kammer begrenzt. Dabei ist die Kammer geeignet und eingerichtet Waschmittel aufzunehmen. Ferner ist vorgesehen, dass das Waschmittel mit einer Flüssigkeit aus der Kammer ausgespült werden kann. Bei bekannten Einspülvorrichtungen ist ein Mittel zum Verteilen der Flüssigkeit vorgesehen, mit welchem über mehrere Stellen verteilt die Flüssigkeit in die Kammer eingespült werden kann, um Waschmittel aus der Kammer auszuspülen. Ein derartiges Verteilmittel weist zum Einspülen der Flüssigkeit in die Kammer in der Regel eine oder mehrere Düsen auf.Known Einspülvorrichtungen have a container which defines at least one chamber with a bottom and side walls. The chamber is suitable and equipped to absorb detergent. It is further provided that the detergent can be flushed out of the chamber with a liquid. In known Einspülvorrichtungen a means for distributing the liquid is provided, with which distributed over several locations, the liquid can be flushed into the chamber to flush detergent from the chamber. Such a distribution means has for the flushing of the liquid in the chamber usually one or more nozzles.

Ein Nachteil der bekannten Einspülvorrichtungen beziehungsweise Waschmaschinen mit solchen Einspülvorrichtungen ist, dass regelmäßig Reste von Waschmittelpulver in den Kammern der Einspülvorrichtung zurückbleiben und dort mitunter Verkrustungen bilden, die zumindest unansehnlich sind. Bei verschiedenen Einspülvorrichtungen sind die Düsen speziell zum Abspülen von Waschmittelresten auf den Boden der Kammern gerichtet. Dieses verhindert jedoch nicht das Anhaften von Waschmittelresten an den Seitenwänden. Ferner ist bekannt, die Seitenwände und den Boden mit hydrophoben Oberflächen zu versehen, so dass das Wasser, welches in die Kammern eingespült wird, von den Oberflächen abperlt. Dieses führt jedoch zu einer geringen Benetzung insbesondere der Seitenwände, wodurch es möglich ist, dass das Wasser das Waschpulver, welches an den Seitenwänden anhaftet, nicht abspült. Werden dagegen Seitenwände und Böden mit hoher Benetzbarkeit, d. h. mit hydrophilen Oberflächen verwendet, führt dies dazu, dass Wasser nach dem letzten Spülen am Boden der Kammern bleibt und Waschmittel, welches dann für den folgenden Waschgang eingefüllt wird, mit diesem Wasser eine klebrige schleimartige Masse bildet, die am Kammerboden anhaftet.A disadvantage of the known Einspülvorrichtungen or washing machines with such Einspülvorrichtungen is that regularly residues of detergent powder remain in the chambers of Einspülvorrichtung and sometimes form encrustations that are at least unsightly. In various Einspülvorrichtungen the nozzles are specifically designed for rinsing detergent residues on the bottom of the chambers. However, this does not prevent the adhesion of detergent residues on the side walls. It is also known to provide the sidewalls and the floor with hydrophobic surfaces so that the water that is flushed into the chambers will bead off the surfaces. However, this results in little wetting, in particular of the side walls, whereby it is possible that the water does not wash off the washing powder which adheres to the side walls. On the other hand, if sidewalls and floors with high wettability, d. H. used with hydrophilic surfaces, this means that after the last rinse water remains at the bottom of the chambers and detergent, which is then filled for the following wash, with this water forms a sticky mucous mass, which adheres to the bottom of the chamber.

Aus der DE 101 22 514 A1 ist es allgemein bekannt, Wandungen einer Einspüleinrichtung für Waschmittel zumindest teilweise mit einer selbstreinigenden Oberfläche auszubilden wobei die Oberfläche der Wandungen mit einer Mikrostruktur-Oberfläche versehen ist, die das Anhaften von Waschmitteln verhindern soll. Mit dieser Maßnahme ist jedoch nicht sichergestellt, dass Waschmittelreste sowohl von den Seitenwänden als auch vom Boden der Kammern zuverlässig ausgespült werden.From the DE 101 22 514 A1 It is generally known to form walls of a detergent dispenser at least partially with a self-cleaning surface, wherein the surface of the walls is provided with a microstructure surface intended to prevent the adhesion of detergents. However, this measure does not ensure that detergent residues are reliably rinsed off both from the side walls and from the bottom of the chambers.

Der Erfindung liegt die Aufgabe zugrunde, eine Einspülvorrichtung dahingehend zu verbessern, dass das Waschmittel möglichst restlos aus der Kammer ausgespült wird.The invention has for its object to improve a dispenser to the effect that the detergent is rinsed as completely as possible from the chamber.

Diese Aufgabe wird durch eine Einspülvorrichtung mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Ausführungen und Weiterbildungen ergeben sich aus den nachfolgenden abhängigen Ansprüchen.This object is achieved by a dispenser with the features of claim 1. Advantageous embodiments and developments emerge from the following dependent claims.

Hierzu sind die Oberflächen des Bodens hydrophob und die Oberflächen der Seitenwände einer Kammer hydrophil ausgebildet. Ferner ist es möglich, dass der Boden und die Oberflächen unterschiedliche Rauhigkeiten haben, wobei der Boden eine geringere Rauhigkeit aufweist, als die Seitenwände. Dieses kann ein Instrument sein, um die unterschiedlichen hydrophoben beziehungsweise hydrophilen Eigenschaften des Bodens und der Seitenwände herzustellen. Hydrophob bezeichnet in diesem Zusammenhang eine schlechte Benetzbarkeit der Oberfläche mit Wasser, während hydrophil eine gute Benetzbarkeit der Oberfläche mit Wasser meint.For this purpose, the surfaces of the soil are hydrophobic and the surfaces of the side walls of a chamber are hydrophilic. Further, it is possible that the floor and the surfaces have different roughnesses, the floor having a lower roughness than the side walls. This can be an instrument to produce the different hydrophobic or hydrophilic properties of the floor and the side walls. Hydrophobic refers in this context to a poor wettability of the surface with water, while hydrophilic means a good wettability of the surface with water.

Die Seitenwände einer Kammer einer erfindungsgemäßen Einspülvorrichtung können als Übergangsbereich zum Boden eine Hohlkehle aufweisen. In dieser Hohlkehle kommt es ebenfalls häufig zu Anhaftungen von Waschmittelresten. Um dies zu vermindern, ist der Bereich der Hohlkehle mit der geringen Rauhigkeit ausgeführt.The side walls of a chamber of a dispenser according to the invention can have a groove as a transition region to the bottom. In this groove, it also often leads to residues of detergent residues. To reduce this, the area of the groove with the low roughness is designed.

In einer vorteilhaften Ausführung besteht die Kammer der Einspüleinrichtung aus einem Kunststoff-Material, wobei die Rauhigkeit in die Oberfläche des Materials selbst eingeprägt wird. Dies wird auf einfache Weise durch das Spritzgusswerkzeug selbst bereitgestellt, dass die vorgegebene Rauhigkeit für die jeweiligen Oberflächen aufweist.In an advantageous embodiment, the chamber of the flushing device consists of a plastic material, wherein the roughness is impressed into the surface of the material itself. This is easily provided by the injection molding tool itself having the predetermined roughness for the respective surfaces.

In einer anderen Ausführung kann die unterschiedliche Rauhigkeit der Oberflächen auch durch zusätzliche Beschichtungen oder Ähnliches hergestellt werden.In another embodiment, the different roughness of the surfaces can also be produced by additional coatings or the like.

In einer zweckmäßigen Ausführung ist die Rauhigkeit des Bodens etwa kleiner oder gleich 1 µm.In an expedient embodiment, the roughness of the soil is less than or equal to 1 micron.

In einer vorteilhaften Weiterbildung ist die Rauhigkeit des Bodens kleiner oder gleich 0,1 µm. An diesem extrem glatten Boden können Waschmittelreste nur geringfügig anhaften, so dass das Ausspülen nochmals verbessert wird.In an advantageous embodiment, the roughness of the soil is less than or equal to 0.1 microns. Detergent residues can adhere only slightly to this extremely smooth floor, so that rinsing is even further improved.

Die Rauhigkeit der Seitenwände ist dagegen vorteilhaft größer als 3 µm ausgeführt. Hierdurch wird sichergestellt, dass das Wasser an den Seitenwänden nicht zu schnell abfließt und eine flächige Benetzung bereitstellt. Dadurch wird verhindert, dass Waschmittelreste an den Seitenwänden anhaften können. Bei bereits angehafteten Waschmittelresten kann das Wasser an der Oberfläche entlang kriechen, wodurch die Waschmittelreste gelöst werden. Um den Effekt zu verbessern, wird eine Rauhigkeit von größer oder gleich 4 µm verwendet.The roughness of the side walls, however, is advantageously carried out greater than 3 microns. This ensures that the water on the side walls does not drain off too quickly and provides a surface wetting. This prevents detergent residues from adhering to the sidewalls. With detergent residues already attached, the water can creep along the surface, releasing the detergent residue. To improve the effect, a roughness of greater than or equal to 4 μm is used.

Die Aufgabe wird auch mit einer Waschmaschine mit einer Einspülvorrichtung, wie oben beschrieben, gelöst.The object is also achieved with a washing machine with a dispenser, as described above.

Ausführungsbeispiele für eine erfindungsgemäße Einspülvorrichtung sind anhand der Zeichnungen näher beschrieben. Es zeigen:

Fig. 1
eine Frontansicht einer Waschmaschine mit erfindungsgemäßer Einspülvorrichtung;
Fig. 2
wesentliche Teile einer erfindungsgemäßen Einspülvorrichtung und
Fig. 3
einen Behälter der Einspülvorrichtung.
Embodiments of a dispenser according to the invention are described in more detail with reference to the drawings. Show it:
Fig. 1
a front view of a washing machine with inventive Einspülvorrichtung;
Fig. 2
essential parts of a dispenser according to the invention and
Fig. 3
a container of the dispenser.

Die in Fig. 1 dargestellte Waschmaschine W ist äußerlich wie eine aus dem Stand der Technik bekannte Waschmaschine aufgebaut. Auf der Frontseite der Wachmaschine W erkennt man eine für eine Waschmaschine vom Typ eines Frontladers bekannte Tür T, über die eine Waschtrommel der Waschmaschine W zum Einfüllen oder Entnehmen der Wäsche zugänglich ist. In einem Bereich oberhalb der Tür T ist auf der Frontseite der Waschmaschine W ein Bedien- und Anzeigenfeld B vorgesehen, auf welchem verschiedene Bedienknöpfe und Anzeigeelemente vorgesehen sind. Über die Betätigung der Knöpfe kann die Waschmaschine W gesteuert werden. Insbesondere ist eine Programmwahl möglich.In the Fig. 1 illustrated washing machine W is externally constructed as a known from the prior art washing machine. On the front of the waxing machine W can be seen a known for a washing machine of the front loader type door T, via a washing drum of the washing machine W for filling or removal of the laundry is accessible. In an area above the door T is on the front of the washing machine W a control and display panel B is provided on which various control buttons and display elements are provided. By pressing the buttons, the washing machine W can be controlled. In particular, a program selection is possible.

Ebenfalls oberhalb der Tür T ist auf der Frontseite die Einspülvorrichtung E beziehungsweise eine Abdeckung der Einspülvorrichtung E erkennbar. Die Einspülvorrichtung E ist an dem bei Waschmaschinen üblichen Platz in der linken oberen Ecke auf der Frontseite der Waschmaschine W vorgesehen. Die Richtungsangaben beziehen sich auf die betriebsgemäße Position der Waschmaschine W. Im vorliegenden Fall umfasst die Einspülvorrichtung E einen Behälter 3, der nach Art einer Schublade herausgezogen werden kann, um das Waschmittel in Kammern des Behälters 3 einzufüllen.Also above the door T is on the front of the dispenser E or a cover of the dispenser E recognizable. The dispenser E is provided at the usual place in washing machines in the upper left corner on the front side of the washing machine W. The directions refer to the operating position of the washing machine W. In the present case, the dispenser E includes a container 3, which can be pulled out in the manner of a drawer to fill the detergent in chambers of the container 3.

Das Wesentliche der Einspülvorrichtung E, welches innerhalb der Waschmaschine W angeordnet ist, ist in Fig. 2 dargestellt. Die wesentlichen Teile werden durch einen ausziehbaren Behälter 3, ein Verteilmittel 2 und ein Gehäuse (nicht dargestellt) gebildet.The essence of the dispenser E, which is located within the washing machine W, is in Fig. 2 shown. The essential parts are formed by an extendable container 3, a distribution means 2 and a housing (not shown).

Der Behälter 3 ist als verschiebbares Teil unterhalb des Verteilmittels 2 angeordnet. Der Behälter 3 (siehe insbesondere Fig. 3) weist drei Kammern 3A, 3B, 3C auf, wobei alle drei Kammern 3A, 3B, 3C zum Einfüllen von Waschmitteln geeignet und eingerichtet sind. Die Kammer 3A oder die Kammer 3B sind für die Aufnahme von Waschmitteln bzw. pulverförmigen Waschmitteln für einen Hauptwaschgang oder Vorwaschgang vorgesehen. Der Waschmittelbehälter 3C ist dagegen für die Aufnahme von flüssigem Weichspüler vorgesehen.The container 3 is arranged as a displaceable part below the distribution means 2. The container 3 (see in particular Fig. 3 ) has three chambers 3A, 3B, 3C, wherein all three chambers 3A, 3B, 3C are suitable and adapted for filling of detergents. The chamber 3A or the chamber 3B are provided for receiving detergents or powdery detergents for a main wash or pre-wash. On the other hand, the detergent container 3C is provided for receiving liquid fabric softener.

Die Kammer 3C ist in einem vorderen Bereich des Behälters 3 vorgesehen, während die Kammern 3A, 3B im mittleren und hinteren Bereich nebeneinander angeordnet sind.The chamber 3C is provided in a front area of the container 3, while the chambers 3A, 3B are arranged side by side in the middle and rear area.

Der Boden 31 der Kammer 3A und der Kammer 3B ist nach hinten geneigt. Die Kammern 3A und 3B werden durch einen Boden 31 und Seitenwände 32 begrenzt. Eine Rückwand ist nicht vorgesehen. Aufgrund der fehlenden Rückwand ist es möglich, dass Flüssigkeit, die in die Kammern 3A, 3B eingespült wurde, auf der hinteren Seite des Behälters 3 aus den Kammern 3A, 3B herausläuft, um in den Laugenbehälter bzw. in die Waschtrommel zu gelangen.The bottom 31 of the chamber 3A and the chamber 3B is inclined backwards. The chambers 3A and 3B are bounded by a bottom 31 and side walls 32. A back wall is not provided. Due to the lack of back wall, it is possible that liquid that has been flushed into the chambers 3A, 3B, on the rear side of the container 3 from the chambers 3A, 3B runs out to get into the tub or in the washing drum.

Das Verteilmittel 2 ist dazu vorgesehen, Wasser an verschiedenen Stellen verteilt in die Kammern 3A, 3B, 3C einzuspülen. Das Verteilmittel 2 ist so ausgeführt, dass in jede Kammer separat Wasser einspülbar ist. Die Verteilung der Flüssigkeit in die jeweiligen Abschnitte 2A1, 2A2, 2A3 erfolgt über eine sogenannte Wasserweiche (nicht dargestellt), die wiederum von der Steuerungseinrichtung der Waschmaschine W in Abhängigkeit des Waschprogramms angesteuert wird.The distribution means 2 is intended to flush water at different locations into the chambers 3A, 3B, 3C. The distribution means 2 is designed so that water can be flushed into each chamber separately. The distribution of the liquid in the respective sections 2A1, 2A2, 2A3 via a so-called water switch (not shown), which in turn is controlled by the controller of the washing machine W as a function of the wash program.

Der erste Abschnitt des Verteilmittels 2A ist der ersten Kammer 3A zugeordnet und ist in drei Teilabschnitte unterteilt. In jedem dieser drei Teilabschnitte 2A1, 2A2, 2A3 ist eine Anzahl von Düsen 24, 25, 26 vorgesehen, über welche die Flüssigkeit in die Kammer 3A eingespült werden kann. Die Düsen 24, 25, 26 sind so ausgerichtet, dass das Wasser gegen Seitenwände 32 und den Boden 31 gesprüht werden kann.The first section of the distribution means 2A is associated with the first chamber 3A and is divided into three sections. In each of these three sections 2A1, 2A2, 2A3, a number of nozzles 24, 25, 26 are provided, via which the liquid can be flushed into the chamber 3A. The nozzles 24, 25, 26 are aligned so that the water can be sprayed against sidewalls 32 and the floor 31.

Die Oberfläche des Bodens 31 zumindest der ersten Kammer 3A ist hydrophob ausgeführt, so dass Flüssigkeiten von dem Boden 31 abperlen und kaum die Möglichkeit haben den Boden 31 zu benetzen. Die Oberfläche des hohlkehlenförmigen Übergangsbereichs 33 ist hierbei zumindest teilweise ebenfalls hydrophob ausgeführt. Dagegen sind die Seitenwände 32 zumindest der ersten Kammer 3A hydrophil ausgeführt, so dass Flüssigkeiten die Seitenwände 32 gut benetzen und sich gut auf den Seitenwänden 32 verteilen. Lediglich in einem dem Boden 31 direkt benachbarten Übergangsbereich der Seitenwände 32, der als Hohlkehle 33 ausgebildet ist, können auch die Seitenwände 32 in diesem Bereich hydrophob ausgeführt sein. Die Hydrophobisierung des Bodens 31 beziehungsweise die Hydrophilisierung der Seitenwände 32 wird durch unterschiedliche Rauhigkeiten des Bodens 31 und der Seitenwände 32 erreicht. Der Boden 31 hat beispielsweise eine gemittelte Rauhigkeit mit einer Tiefe von kleiner oder gleich 0,1 µm, während die gemittelte Rauhigkeit der Seitenwände 32 ungefähr 4 µm beträgt. Die unterschiedlichen Rauhigkeitsgrade können durch eine entsprechende Oberfläche der Werkzeuge erreicht werden, die zum Herstellen des Behälters 3 verwendet werden. Ebenso ist es möglich, die unterschiedlichen Rauhigkeitswerte oder die unterschiedliche Benetzbarkeit für Wasser durch Beschichtungen der Oberflächen oder dergleichen zu erreichen. Auch die Nachbehandlung der Oberflächen nach der Herstellung des Behälters 3 ist denkbar, beispielsweise durch Chemikalien oder mechanische Bearbeitung, wie Schleifen oder Polieren. Der hohlkehlenförmige Übergangsbereich 33 wird ebenfalls mit einer geringen Rauhigkeit, hier von kleiner oder gleich 0,1 µm Tiefe, versehen, so dass auch in diesem Bereich die Oberfläche hydrophob eingestellt ist. Bei der Ausführung des Behälters 3 aus spritzgegossenem Kunststoff wird die geringe Rauhigkeit des Bodens 31 oder des Übergangsbereichs 33 durch ein sehr glattes Werkzeug für das Spritzgießverfahren erreicht. Die höhere Rauhigkeit für die Seitenwände 32 wird dadurch erreicht, dass das Werkzeug in diesem Bereich durch einen Schliff oder eine sogenannten Strichpolitur auf die gewünschte Rauhigkeit, wie oben beschrieben, gebracht wird.The surface of the bottom 31 of at least the first chamber 3A is designed to be hydrophobic, so that liquids roll off the bottom 31 and hardly have the opportunity to wet the bottom 31. The surface of the groove-shaped transition region 33 is at least partially also made hydrophobic. In contrast, the side walls 32 of at least the first chamber 3A are made hydrophilic, so that liquids wet the side walls 32 well and spread well on the side walls 32. Only in a directly adjacent to the bottom 31 transition region of the side walls 32, which is formed as a groove 33, and the side walls 32 may be made hydrophobic in this area. The hydrophobization of the floor 31 or the hydrophilization of the side walls 32 is achieved by different roughnesses of the bottom 31 and the side walls 32. The bottom 31 has, for example, an average roughness with a depth of less than or equal to 0.1 μm, while the average roughness of the side walls 32 is approximately 4 μm. The different degrees of roughness can be achieved by a corresponding surface of the tools used to make the container 3. It is also possible to achieve the different roughness values or the different wettability for water by coatings of the surfaces or the like. The aftertreatment of the surfaces after the production of the container 3 is conceivable, for example by chemicals or mechanical processing, such as grinding or polishing. The groove-shaped transition region 33 is likewise provided with a low roughness, here of less than or equal to 0.1 μm depth, so that the surface is also in this region is adjusted hydrophobic. In the embodiment of the container 3 made of injection-molded plastic, the low roughness of the bottom 31 or the transition region 33 is achieved by a very smooth mold for the injection molding. The higher roughness for the sidewalls 32 is achieved by bringing the tool to the desired roughness, as described above, in this area by means of a polish or so-called polish.

Claims (9)

Einspülvorrichtung (E) für eine Waschmaschine (W),
mit einem Behälter (3), der mit einem Boden (31) und Seitenwänden (32) zumindest eine Kammer (3A, 3B, 3C) begrenzt,
wobei die Kammer (3A, 3B, 3C) geeignet und eingerichtet ist Waschmittel aufzunehmen und die Kammer (3A, 3B, 3C) geeignet und eingerichtet ist, dass Waschmittel mit der Flüssigkeit aus ihr ausgespült werden kann,
dadurch gekennzeichnet,
dass Oberflächen des Bodens (31) hydrophob und Oberflächen der Seitenwände (32) hydrophil ausgeführt sind.Einspülvorrichtung (E) for a washing machine (W),
with a container (3) which delimits at least one chamber (3A, 3B, 3C) with a bottom (31) and side walls (32),
wherein the chamber (3A, 3B, 3C) is suitable and adapted to receive detergent and the chamber (3A, 3B, 3C) is suitable and arranged so that detergent with the liquid can be flushed out of it,
characterized,
that surfaces of the bottom (31) are made hydrophobic and surfaces of the side walls (32) are hydrophilic. Einspülvorrichtung (E) nach Anspruch 1,
dadurch gekennzeichnet,
dass die Seitenwände (32) als Übergangsbereich zum Boden (31) eine Hohlkehle (33) aufweisen, wobei die Hohlkehlen (33) und der Boden (31) hydrophob sind.Einspülvorrichtung (E) according to claim 1,
characterized,
in that the side walls (32) have a groove (33) as a transition region to the bottom (31), the grooves (33) and the bottom (31) being hydrophobic. Einspülvorrichtung (E) nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
dass der Behälter (3) zum Aufnehmen des Waschmittels mehrere Kammern (3A, 3B, 3C) aufweist, die von je einem Boden (31) und Seitenwänden (32) begrenzt sind.Injection device (E) according to claim 1 or 2,
characterized,
in that the container (3) for receiving the detergent has a plurality of chambers (3A, 3B, 3C) delimited by a respective bottom (31) and side walls (32). Einspülvorrichtung (E) nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
dass Oberflächen des Bodens (31) oder des Übergangsbereichs (33) und der Seitenwände (32) eine unterschiedliche Rauhigkeit aufweisen.Injection device (E) according to claim 1 or 2,
characterized,
that surfaces of the bottom (31) or the transition region (33) and the side walls (32) have a different roughness. Einspülvorrichtung (E) nach Anspruch 4,
dadurch gekennzeichnet,
dass die Rauhigkeit des Bodens (31) oder des Übergangsbereichs (33) kleiner ist als die Rauhigkeit der Seitenwände (32).Einspülvorrichtung (E) according to claim 4,
characterized,
that the roughness of the bottom (31) or the transition region (33) is smaller than the roughness of the side walls (32). Einspülvorrichtung (E) nach Anspruch 5,
dadurch gekennzeichnet,
dass die Rauhigkeit des Bodens (31) oder des Übergangsbereichs (33) kleiner oder gleich 1 µm ist.Einspülvorrichtung (E) according to claim 5,
characterized,
that the roughness of the bottom (31) or of the transition region (33) is less than or equal to 1 .mu.m. Einspülvorrichtung (E) nach Anspruch 6,
dadurch gekennzeichnet,
dass die Rauhigkeit des Bodens (31) oder des Übergangsbereichs (33) kleiner oder gleich 0,1 µm ist.Einspülvorrichtung (E) according to claim 6,
characterized,
that the roughness of the bottom (31) or of the transition region (33) is less than or equal to 0.1 microns. Einspülvorrichtung (E) nach einem der Ansprüche 1 bis 5,
dadurch gekennzeichnet,
dass die Rauhigkeit der Seitenwände (32) größer als 3 µm ist.Injection device (E) according to one of claims 1 to 5,
characterized,
that the roughness of the side walls (32) is greater than 3 microns. Waschmaschine (W) mit einer Einspülvorrichtung (E) nach einem der Ansprüche 1 bis 8.Washing machine (W) with a dispenser (E) according to one of claims 1 to 8.
EP08012188A 2007-07-30 2008-07-05 Dispensing unit for a washing machine and washing machine Active EP2022884B1 (en)

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DE102007036007A DE102007036007A1 (en) 2007-07-30 2007-07-30 Einspülvorrichtung for a washing machine and washing machine

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WO2015177672A1 (en) * 2014-05-22 2015-11-26 BSH Hausgeräte GmbH Household appliance for caring pieces of laundry with a specifically coated flush-in tray
EP3152354B1 (en) * 2014-06-04 2019-07-24 BSH Hausgeräte GmbH Household appliance comprising an outer tub
EP3763867A1 (en) * 2019-07-09 2021-01-13 Whirlpool Corporation Laundry dispenser with hydrophobic coating
CN113338004A (en) * 2020-03-03 2021-09-03 青岛海尔洗衣机有限公司 Self-cleaning throwing device and washing machine

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KR20210093688A (en) 2020-01-20 2021-07-28 엘지전자 주식회사 Laundry treating apparatus

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EP3152354B1 (en) * 2014-06-04 2019-07-24 BSH Hausgeräte GmbH Household appliance comprising an outer tub
EP3763867A1 (en) * 2019-07-09 2021-01-13 Whirlpool Corporation Laundry dispenser with hydrophobic coating
CN113338004A (en) * 2020-03-03 2021-09-03 青岛海尔洗衣机有限公司 Self-cleaning throwing device and washing machine

Also Published As

Publication number Publication date
DE502008000151D1 (en) 2009-12-03
ES2332748T3 (en) 2010-02-11
EP2022884B1 (en) 2009-10-21
ATE446408T1 (en) 2009-11-15
DE102007036007A1 (en) 2009-02-19

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