WO2002046106A1 - Device for the precipitation of lime from water - Google Patents

Device for the precipitation of lime from water Download PDF

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Publication number
WO2002046106A1
WO2002046106A1 PCT/EP2001/013949 EP0113949W WO0246106A1 WO 2002046106 A1 WO2002046106 A1 WO 2002046106A1 EP 0113949 W EP0113949 W EP 0113949W WO 0246106 A1 WO0246106 A1 WO 0246106A1
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WO
WIPO (PCT)
Prior art keywords
dishwasher
water
container
lime
precipitation
Prior art date
Application number
PCT/EP2001/013949
Other languages
German (de)
French (fr)
Inventor
Georg C. Schwarting
Original Assignee
Schwarting Georg C
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schwarting Georg C filed Critical Schwarting Georg C
Priority to AU2002227960A priority Critical patent/AU2002227960A1/en
Publication of WO2002046106A1 publication Critical patent/WO2002046106A1/en

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
    • 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
    • A47L15/4229—Water softening arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J39/00—Cation exchange; Use of material as cation exchangers; Treatment of material for improving the cation exchange properties
    • B01J39/04—Processes using organic exchangers
    • B01J39/07—Processes using organic exchangers in the weakly acidic form

Definitions

  • the invention relates to a device for the precipitation of lime from water for use within a dishwasher according to the preamble of claim 1.
  • the object is therefore to provide a device for precipitating the lime from the water in a dishwasher, which has a good effect and does not pollute the waste water in any way.
  • Figure 1 is a schematic side view of a device according to the invention.
  • Figure 2 is a bottom view of the bottom of the device shown in Figure 1; and Figure 3 is a top view of the top of the container shown in Figure 1.
  • the container shown in Figure 1 has a substantially cylindrical housing 2, which preferably consists of a stainless steel mesh that is supported by a plastic frame. Care must be taken to use a heat-resistant plastic that can withstand the temperatures that occur in a dishwasher.
  • the cylindrical housing 2 has an opening which is closed with the container lid 3.
  • the container bottom has a reinforcing ring and reinforcing webs, which are also made of heat-resistant plastic, and spacer cones 6, which are provided so that the container bottom does not lie directly on the dishes to be cleaned.
  • the height of the housing 2 is approximately 50 to 100 mm, the diameter is 30 to 50 mm.
  • the top 4 of the housing is flared, as shown in Figures 1 and 3.
  • a reinforcing ring and web which is also made of heat-resistant plastic, and a retaining bracket 7, via which the device can be hung on a suitable suspension device within the dishwasher.
  • the housing 2 and the container bottom are closed on all sides by a stainless steel screen mesh 2, which has a mesh size between 0.2 and 0.8 mm, as a result of which the water in the dishwasher can enter and exit.
  • the device is completely or partially filled with a material described in technical terms as catalyst granules.
  • This catalyst granulate is an ion exchange material which is weakly acidic and has functional carboxylate groups (COO " ) on its surface, which in turn carry counterions, namely Ca 2+ ions.
  • This material is described in detail in the document mentioned in the introduction to the description described why special configurations of the material should not be discussed further here.
  • the effect of the material is that it binds the lime physically dissolved in the water, creating lime agglomerations that are washed off the surface in larger particles. This means that the physically dissolved lime crystals cannot settle homogeneously on the surface of the dishwasher and on the dishes and thus form the unwanted lime film, but are flushed out with the waste water.
  • the described device is introduced into the interior of a dishwasher before the washing process and, for example, placed or placed in the baskets available for glasses or cups. Here you can use the retaining web 5 or the bracket 7.
  • the water that has entered the dishwasher through a tap is sprayed under pressure using nozzles in the rotating arms of the machine.
  • the device according to the invention is repeatedly flowed through by the water.
  • the water is mixed with detergent and heated.
  • the so-called seed crystals form on the surface of the catalyst granules and are rinsed out after reaching a certain size.
  • the regeneration of the catalyst granules takes place in a manner known per se. No salt is necessary for this and the catalyst granules can be used as often as desired.
  • a soft material for example a net or a type of stocking, is selected instead of the housing 2, as a result of which the access of the water into the interior of the container is ensured. Damage to the dishes is further avoided with this procedure.
  • the soft container can have a hanging hook for hanging in the interior of the dishwasher.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Washing And Drying Of Tableware (AREA)
  • Treatment Of Water By Ion Exchange (AREA)

Abstract

The invention relates to a device for the precipitation of lime from water in dishwashers. Known such devices use chemical substances which often load the waste water with pollutants. The aim of the invention is to provide an effective device for the precipitation of lime from the water in a dishwasher, which does not pollute the waste water. To this end, the device comprises a container which can be placed inside the dishwasher and through which the dishwasher rinse water can flow. An ion exchanger material comprising functional carboxylate groups (COO-) on its surface is situated inside the container.

Description

Vorrichtung zur Fällung von Kalk aus Wasser Device for the precipitation of lime from water
Die Erfindung betrifft eine Vorrichtung zur Fällung von Kalk aus Wasser zum Gebrauch innerhalb einer Geschirrspülmaschine nach dem Oberbegriff des Anspruchs 1.The invention relates to a device for the precipitation of lime from water for use within a dishwasher according to the preamble of claim 1.
Zur Fällung von Kalk aus Wasser in Geschirrspülmaschinen ist es bekannt, chemische Substanzen zu verwenden, die in die Geschirrspülmaschine, beispielsweise in deren Besteckkorb, in Form einer Tablette eingelegt werden. Die Verwendung chemischer Kalldöser ist vielfach umstritten, da damit häufig eine Belastung des Abwassers verbunden ist.For the precipitation of lime from water in dishwashers, it is known to use chemical substances which are placed in the dishwasher, for example in the cutlery basket, in the form of a tablet. The use of chemical Kalldöser is often controversial, since it is often associated with a pollution of the wastewater.
Ferner ist es aus der PCT/EP 99/01801 bekannt, Kalk aus dem Wasser im Bereich der Wasserversorgung eines Hauses oder einer Anlage zu fällen, indem das Wasser mit mindestens einem Ionenaustauschermaterial in Kontakt gebracht wird, welches schwach sauer ist und funk- tionelle Carboxylatgrappen an seiner Oberfläche aufweist. Dieses Verfahren erfordert jedoch eine Installation im Bereich der Wasserzuführung und kann nicht einfach innerhalb einer Geschirrspülmaschine verwendet werden, die an ein normales Leitungswassernetz angeschlossen ist.Furthermore, it is known from PCT / EP 99/01801 to precipitate lime from the water in the area of the water supply of a house or a system by contacting the water with at least one ion exchange material which is weakly acidic and functional carboxylate groups has on its surface. However, this method requires installation in the water supply area and cannot simply be used inside a dishwasher connected to a normal tap water network.
Es besteht daher die Aufgabe, eine Vorrichtung zur Fällung des Kalks aus dem Wassers innerhalb einer Geschirrspülmaschine bereitzustellen, welche eine gute Wirkung zeigt und das Abwasser in keiner Weise belastet.The object is therefore to provide a device for precipitating the lime from the water in a dishwasher, which has a good effect and does not pollute the waste water in any way.
Gelöst wird diese Aufgabe mit den kennzeichnenden Merkmalen des Anspruches 1. Vorteilhafte Ausgestaltungen sind den Unteransprüchen entnehmbar.This object is achieved with the characterizing features of claim 1. Advantageous refinements can be found in the subclaims.
Ein Ausführungsbeispiel der Erfindung wird im folgenden unter Bezugnahme auf die begleitenden Zeichnungen näher erläutert, wobei zeigen:An embodiment of the invention is explained in more detail below with reference to the accompanying drawings, in which:
Figur 1 eine schematische seitliche Ansicht einer erfindungsgemäßen Vorrichtung;Figure 1 is a schematic side view of a device according to the invention;
Figur 2 eine Ansicht des Bodens der in Figur 1 dargestellten Vorrichtung von unten; und Figur 3 eine Ansicht der Oberseite des in Figur 1 dargestellten Behälters von oben. Der in Figur 1 dargestellte Behälter weist ein im wesentlichen zylindrisches Gehäuse 2 auf, welches vorzugsweise aus einem Edelstahlsiebgeflecht besteht, daß mittels eines Kunststoffgerüstes gestützt wird. Es ist darauf zu achten, daß ein hitzebeständiger Kunststoff verwendet wird, der den in einer Geschirrspülmaschine auftretenden Temperaturen standhält. An seiner Oberseite weist das zylindrische Gehäuse 2 eine Öffnung auf, die mit dem Behälterdeckel 3 verschlossen ist. Der Behälterboden weist einen Verstärkungsring und Verstärkungsstege auf, welche ebenfalls aus hitzebeständigem Kunststoff gefertigt sind, sowie Distanzkegel 6, welche vorgesehen sind, damit der Behälterboden nicht unmittelbar an dem zu reinigenden Geschirr anliegt.Figure 2 is a bottom view of the bottom of the device shown in Figure 1; and Figure 3 is a top view of the top of the container shown in Figure 1. The container shown in Figure 1 has a substantially cylindrical housing 2, which preferably consists of a stainless steel mesh that is supported by a plastic frame. Care must be taken to use a heat-resistant plastic that can withstand the temperatures that occur in a dishwasher. At its top, the cylindrical housing 2 has an opening which is closed with the container lid 3. The container bottom has a reinforcing ring and reinforcing webs, which are also made of heat-resistant plastic, and spacer cones 6, which are provided so that the container bottom does not lie directly on the dishes to be cleaned.
Die Höhe des Gehäuses 2 liegt bei etwa 50 bis 100 mm, der Durchmesser bei 30 bis 50 mm.The height of the housing 2 is approximately 50 to 100 mm, the diameter is 30 to 50 mm.
Die Oberseite 4 des Gehäuses ist konisch erweitert, wie es in den Figuren 1 und 3 dargestellt ist. An der Oberseite befindet sich ein Verstärkungsring und -steg, der ebenfalls aus hitzebeständigem Kunststoff gearbeitet ist, sowie ein Haltebügel 7, über welchen die Vorrichtung an einer geeigneten Aufhängevorrichtung innerhalb der Geschirrspülmaschine einhängbar ist.The top 4 of the housing is flared, as shown in Figures 1 and 3. At the top there is a reinforcing ring and web, which is also made of heat-resistant plastic, and a retaining bracket 7, via which the device can be hung on a suitable suspension device within the dishwasher.
Das Gehäuse 2 und der Behälterboden sind allseitig durch ein Edelstahlsiebgeflecht 2 geschlossen, welches eine Maschenweite zwischen 0,2 und 0,8 mm aufweist, wodurch das in der Geschirrspülmaschine befindliche Wasser ein- und austreten kann.The housing 2 and the container bottom are closed on all sides by a stainless steel screen mesh 2, which has a mesh size between 0.2 and 0.8 mm, as a result of which the water in the dishwasher can enter and exit.
Die Vorrichtung ist mit einem in der Fachsprache als Katalysatorgranulat beschriebenen Material ganz oder teilweise gefüllt. Bei diesem Katalysatorgranulat handelt es sich um ein Ionenaustauschermaterial, welches schwach sauer ist und an seiner Oberfläche funktioneile Carboxylatgrappen (COO") trägt, welche ihrerseits Gegenionen, nämlich Ca2+-Ionen tragen. Dieses Material ist im Detail in der in der Beschreibungseinleitung genannten Schrift beschrieben, weshalb hier nicht weiter auf besondere Ausgestaltungen des Materials eingegangen werden soll.The device is completely or partially filled with a material described in technical terms as catalyst granules. This catalyst granulate is an ion exchange material which is weakly acidic and has functional carboxylate groups (COO " ) on its surface, which in turn carry counterions, namely Ca 2+ ions. This material is described in detail in the document mentioned in the introduction to the description described why special configurations of the material should not be discussed further here.
Das Material hat die Wirkung, daß es den im Wasser physikalisch gelösten Kalk an sich bindet, wodurch Kalkagglomerationen entstehen, die in größeren Teilchen von der Oberfläche abgespült werden. Damit können sich die physikalisch gelösten Kalkkristalle nicht homogen an der Oberfläche der Geschirrspülmaschine und auf dem Geschirr absetzen und damit den unerwünschten Kalkfilm bilden, sondern sie werden mit dem Abwasser ausgespült. Die beschriebene Vorrichtung wird vor dem Spülvorgang in den Innenraum einer Geschirrspülmaschine eingebracht und beispielsweise in die für Gläser oder Tassen vorhandenen Körbe gestellt oder gelegt. Hierbei kann man sich des Haltestegs 5 oder des Haltebügels 7 bedienen.The effect of the material is that it binds the lime physically dissolved in the water, creating lime agglomerations that are washed off the surface in larger particles. This means that the physically dissolved lime crystals cannot settle homogeneously on the surface of the dishwasher and on the dishes and thus form the unwanted lime film, but are flushed out with the waste water. The described device is introduced into the interior of a dishwasher before the washing process and, for example, placed or placed in the baskets available for glasses or cups. Here you can use the retaining web 5 or the bracket 7.
Das über eine Zapfstelle eingelaufene Wasser in der Gescl irrspülmaschine wird im Umwälzverfahren mittels Düsen in den rotierenden Armen im Gerät unter Druck versprüht. Hierbei wird auch die erfindungsgemäße Vorrichtung von dem Wasser immer wieder durchströmt. Dabei wird das Wasser im Rahmen der Steuerung der Maschine mit Waschmittel versetzt und erwärmt. Auf der Oberfläche des Katalysatorgranulats bilden sich währenddessen die sogenannten Impfkristalle, die nach Erreichen einer bestimmten Größe ausgespült werden.The water that has entered the dishwasher through a tap is sprayed under pressure using nozzles in the rotating arms of the machine. Here, the device according to the invention is repeatedly flowed through by the water. As part of the control of the machine, the water is mixed with detergent and heated. In the meantime, the so-called seed crystals form on the surface of the catalyst granules and are rinsed out after reaching a certain size.
Die Regeneration des Katalysatorgranulats erfolgt in an sich bekannter Weise von selbst. Es ist kein Salz hierfür notwending und das Katalysatorgranulat kann beliebig oft verwendet werden.The regeneration of the catalyst granules takes place in a manner known per se. No salt is necessary for this and the catalyst granules can be used as often as desired.
In einer alternativen, nicht dargestellten Ausfülirungsform der Erfindung wird anstelle des Gehäuses 2 ein weiches Material, beispielsweise ein Netz oder eine Art Strumpf gewählt, wodurch der Zutritt des Wassers in den Innenraum des Behältnisses sichergestellt wird. Mit dieser Vorgehensweise wird eine Beschädigung des Geschirrs weiter veπnieden. In einer vorteilhaften Ausgestaltung kann das weiche Behältnis einen Aufhängehaken zum Einhängen im Innenraum der Geschirrspülmaschine aufweisen. In an alternative embodiment of the invention, not shown, a soft material, for example a net or a type of stocking, is selected instead of the housing 2, as a result of which the access of the water into the interior of the container is ensured. Damage to the dishes is further avoided with this procedure. In an advantageous embodiment, the soft container can have a hanging hook for hanging in the interior of the dishwasher.

Claims

Ansprüche Expectations
1. Vorrichtung zur Fällung von Kalk aus Wasser in Geschirrspülmaschinen, dadurch gekennzeichnet, daß sie ein in den Innenraum der Spülmaschine einbringbares Behältnis aufweist, welches von dem Spülwasser der Geschirrspühnaschine durchflutet werden kann und sich im Inneren des Behältnisses (1) ein Ionenaustauschermaterial befindet, welches an seiner Oberfläche funktionelle Caboxylatgruppen (COO") aufweist.1. A device for precipitating lime from water in dishwashers, characterized in that it has a receptacle that can be introduced into the interior of the dishwasher, which can be flooded by the washing water of the dishwasher and in the interior of the receptacle (1) there is an ion exchange material which has functional caboxylate groups (COO " ) on its surface.
2. Vorrichtung nach Ansprach 1, dadurch gekennzeichnet, daß das Behältnis (1) ein geschlossenes, im wesentlichen zylindrisches Gehäuse (2) aus Kunststoff aufweist, dessen Seiten und Boden (3) als Edelstahlsieb ausgebildet ist und das an seiner Oberseite (4) einen Haltesteg (5) zum Einhängen an einem entsprechenden Vorsprung innerhalb der Geschirrspülmaschine aufweist.2. Device according spoke 1, characterized in that the container (1) has a closed, substantially cylindrical housing (2) made of plastic, the sides and bottom (3) is designed as a stainless steel sieve and the one on its top (4) Has retaining web (5) for hanging on a corresponding projection within the dishwasher.
3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß das Behältnis als Netz ausgebildet ist.3. Apparatus according to claim 1, characterized in that the container is designed as a network.
4. Vorrichtung nach Ansprach 3, dadurch gekennzeichnet, daß das Netz eine Halterung zum Einhängen an einen Vorsprung in der Geschirrspülmaschine aufweist.4. The device according spoke 3, characterized in that the network has a holder for hanging on a projection in the dishwasher.
5. Vorrichtung nach Ansprach 2, dadurch gekennzeichnet, daß das Gehäuse (2) eine verschließbare Öffnung aufweist.5. The device according spoke 2, characterized in that the housing (2) has a closable opening.
6. Vorrichtung nach einem der voranstehenden Ansprüche, dadurch gekennzeichnet, daß die Maschenweite des Behältnisses (Edelstahlsieb, Netz) zwischen 0,2 und 0,8 mm liegt. 6. Device according to one of the preceding claims, characterized in that the mesh size of the container (stainless steel screen, mesh) is between 0.2 and 0.8 mm.
PCT/EP2001/013949 2000-12-09 2001-11-29 Device for the precipitation of lime from water WO2002046106A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002227960A AU2002227960A1 (en) 2000-12-09 2001-11-29 Device for the precipitation of lime from water

Applications Claiming Priority (2)

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DE20020920U DE20020920U1 (en) 2000-12-09 2000-12-09 Device for the precipitation of lime from water
DE20020920.5 2000-12-09

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DE (1) DE20020920U1 (en)
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9193610B2 (en) 2011-08-10 2015-11-24 Ecolab USA, Inc. Synergistic interaction of weak cation exchange resin and magnesium oxide

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2525497A (en) * 1946-07-12 1950-10-10 American Cyanamid Co Multibed cartridge for ion exchange
EP0605288A1 (en) * 1992-12-30 1994-07-06 Esswein S.A. Washing machines using softened water
EP0611595A1 (en) * 1993-02-16 1994-08-24 Brita Wasser-Filter-Systeme GmbH Process for water desalinization
US5978994A (en) * 1997-03-12 1999-11-09 Vision International Production, Inc. Device and method for use in cleaning laundry

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1628805U (en) 1951-06-29 1951-10-04 Anneliese Hehne DRILLING MACHINE AS DEVICE FOR HOUSEHOLD WORKS.
ATE293581T1 (en) 1998-03-24 2005-05-15 Watercryst Chemiefreie Wasserb METHOD FOR PRECIPITATE OR Flocculating INGREDIENTS FROM SOLUTIONS

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2525497A (en) * 1946-07-12 1950-10-10 American Cyanamid Co Multibed cartridge for ion exchange
EP0605288A1 (en) * 1992-12-30 1994-07-06 Esswein S.A. Washing machines using softened water
EP0611595A1 (en) * 1993-02-16 1994-08-24 Brita Wasser-Filter-Systeme GmbH Process for water desalinization
US5978994A (en) * 1997-03-12 1999-11-09 Vision International Production, Inc. Device and method for use in cleaning laundry

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9193610B2 (en) 2011-08-10 2015-11-24 Ecolab USA, Inc. Synergistic interaction of weak cation exchange resin and magnesium oxide
US9896364B2 (en) 2011-08-10 2018-02-20 Ecolab Usa Inc. Synergistic interaction of weak cation exchange resin and magnesium oxide

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Publication number Publication date
AU2002227960A1 (en) 2002-06-18
DE20020920U1 (en) 2001-02-22

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