EP2529656B1 - Agent de rinçage, utilisation de l'agent de rinçage dans une lave-vaisselle, lave-vaisselle et procédé de fonctionnement associé - Google Patents

Agent de rinçage, utilisation de l'agent de rinçage dans une lave-vaisselle, lave-vaisselle et procédé de fonctionnement associé Download PDF

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Publication number
EP2529656B1
EP2529656B1 EP12164223.5A EP12164223A EP2529656B1 EP 2529656 B1 EP2529656 B1 EP 2529656B1 EP 12164223 A EP12164223 A EP 12164223A EP 2529656 B1 EP2529656 B1 EP 2529656B1
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EP
European Patent Office
Prior art keywords
dishwasher
metering
solution
alkaline solution
hydrogen peroxide
Prior art date
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.)
Active
Application number
EP12164223.5A
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German (de)
English (en)
Other versions
EP2529656A2 (fr
EP2529656A3 (fr
Inventor
Nicolai Simons
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stockmeier Chemie & Co KG GmbH
Original Assignee
Stockmeier Chemie & Co KG GmbH
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.)
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Publication date
Application filed by Stockmeier Chemie & Co KG GmbH filed Critical Stockmeier Chemie & Co KG GmbH
Publication of EP2529656A2 publication Critical patent/EP2529656A2/fr
Publication of EP2529656A3 publication Critical patent/EP2529656A3/fr
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Classifications

    • 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
    • A47L15/0018—Controlling processes, i.e. processes to control the operation of the machine characterised by the purpose or target of the control
    • A47L15/0055—Metering or indication of used products, e.g. type or quantity of detergent, rinse aid or salt; for measuring or controlling the product concentration
    • 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
    • A47L15/44—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants
    • A47L15/4418—Devices for adding cleaning agents; Devices for dispensing cleaning agents, rinsing aids or deodorants in the form of liquids
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/39—Organic or inorganic per-compounds
    • C11D3/3947—Liquid compositions
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/02—Inorganic compounds
    • C11D7/04—Water-soluble compounds
    • C11D7/06—Hydroxides
    • 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
    • A47L15/24—Washing or rinsing machines for crockery or tableware with movement of the crockery baskets by conveyors
    • A47L15/241—Washing or rinsing machines for crockery or tableware with movement of the crockery baskets by conveyors the dishes moving in a horizontal plane
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/40—Specific cleaning or washing processes
    • C11D2111/44—Multi-step processes

Definitions

  • the invention relates to a method for operating a dishwasher in the embodiment as a household dishwasher and / or industrial dishwasher, but not as a conveyor dishwasher.
  • liquid detergents In the field of detergents so-called Spültabs and liquid detergents are known.
  • the liquid rinsing agents are also used for cleaning items in the range of commercial kitchens or catering business.
  • one-component detergent used in the high alkaline range In the field of detergents, i.a. Also one-component detergent used in the high alkaline range.
  • the EP 1 275 708 A1 discloses a two-component bleach composition.
  • One of the components is a hydrogen peroxide solution which is present in a sulfuric acid solution.
  • the second component is an alkaline solution.
  • the WO 96/161152 A1 discloses in the comparative examples a detergent with potassium hydroxide and in a variant a hydrogen peroxide agent. However, both of these seem to be already contained in one and the same component. The document distinguishes between different pH ranges.
  • the EP 1 454 637 A1 discloses a means for cleaning and disinfecting medical instruments.
  • the WO 2009/034067 A1 discloses a method of cleaning dishes by means of an oxidizer and an alkaline detergent.
  • the WO92 / 18047 A1 discloses a method for cleaning dishes in which an alkaline detergent is presented.
  • an alkaline detergent is presented in which an alkaline detergent is presented.
  • the bath of liquor to be sprayed on consists of a substantially aqueous solution containing an acidic agent. This is done by automatically dosing an acidulant to the tank of the dishwasher, the solution of which is last applied to the dishes to be cleaned, and preferably has a pH of from 2 to 6.5, in particular from 2 to 3.
  • the WO 91/00044 A1 discloses an alkaline detergent and an active oxygen-containing agent, which was added by means of a metering pump and a metering squeeze pump to a rinsing liquor. This is initially a parallel dosing. Subsequently, an emergency emergency dosage of active oxygen is made again and again.
  • the EP 1 354 549 A2 discloses a dishwasher. This includes a pH measuring station.
  • the WO 03/059143 A1 discloses the construction of a dishwasher.
  • An increased oxidizing capacity of the oxidizing agent, and thus an additional increase in the cleaning ability, is advantageously achieved by the metered addition of the oxidizing agent-containing solution, according to step B, only after an amount of strong alkaline solution from step A) has already been added to the rinsing liquor .
  • oxidizing agents in particular hydrogen peroxide, which lose their oxidation action in basic solution after several minutes, since due to the increased reactivity of a basic or alkaline hydrogen peroxide solution is a faster conversion of the hydrogen peroxide into water and oxygen. This basically speaks for the use of hydrogen peroxide in dishwashers, since the degradation products of hydrogen peroxide completely harmless for use are in the food sector.
  • the increased oxidation effect allows a short-term high cleaning effect immediately after metering in to the alkaline rinsing liquor. This is the higher, provided that the metered addition of the oxidizing agent takes place only after the metered addition of the strongly alkaline solution, so that the alkaline washing liquor can already dissolve a part of the soiling before the short-term oxidation effect of the oxidant-containing solution comes to fruition.
  • the metered addition of the strongly alkaline solution, according to step A, and the metered addition of the oxidant-containing solution, according to step B, by means of a metering In order to achieve an economical use of the individual components with optimum cleanliness of the items to be washed, for example dishes, the metered addition of the strongly alkaline solution, according to step A, and the metered addition of the oxidant-containing solution, according to step B, by means of a metering.
  • the metered addition of an oxidant-containing solution to the rinsing liquor starts in a time interval of 40 seconds to two minutes later than the metered addition of the strongly alkaline solution to the rinsing liquor. This time difference is sufficient to solve most soiling.
  • the concentration of dosed alkaline solution in the rinsing liquor is 1 to 2 g / l.
  • This concentration range is suitable for achieving a good cleaning result and at the same time avoids excessive contamination of the waste water by a too high pH value or by an excessive concentration of hydroxide ions in the wastewater.
  • the water hardness influences the cleaning effect of the alkaline solution. Therefore, with hard water, a higher concentration of alkaline solution must be added than with soft water. It has proved to be favorable if the concentration of dosed alkaline solution in the rinsing liquor is 1 to 2 g / l with a water hardness of less than or equal to 14 ° dH.
  • a concentration of dosed oxidant-containing solution in the rinse liquor 0.5 to 1 g / l has proven to be the optimum amount to achieve a good cleaning result with economical consumption.
  • a ratio of oxidant-containing solution to alkaline solution when metered 1: 1 to 1: 8 has been found to be particularly advantageous.
  • the components are preferably stored spatially separated from each other and can be purchased separately packaged.
  • the hydrogen peroxide-containing solution has a hydrogen peroxide content of more than 10% by weight, preferably more than 25% by weight.
  • a hydrogen peroxide content of more than 10% by weight, preferably more than 25% by weight.
  • the metered-in strongly alkaline solution and the oxidant-containing solution combine to produce a high quality of cleaning within a very short period of time after metering.
  • any domestic dishwasher can be used as a dishwasher.
  • the use of the detergent in an industrial dishwasher has proven to be particularly advantageous.
  • the dosing has a control for the time-delayed metered addition of the strong-alkaline solution and the oxidant-containing solution. This makes it possible to optimize the longer exposure time of the alkaline solution with the oxidation effect of the oxidant-containing solution.
  • a dishwasher 1 is shown with a housing, which corresponds to the structure of a conventional household appliance dishwasher known per se.
  • the dishwasher 1 has a metering system 2, which is arranged outside the housing of the dishwasher 1.
  • the metering system has two pumps 3 and 4, and two storage tanks 5 and 6. Each of the pumps 3 and 4 has a control with the control modules 7 and 8.
  • a second reservoir 6 has as a second component a solution with 30 wt.% Hydrogen peroxide, as an oxidizing agent.
  • the cleaning performance of a dishwasher usually depends on four factors, which interact. This concerns the rinsing time, the mechanical energy which acts on a washware to be cleaned by the action of a rinsing agent jet, the temperature of the rinsing agent and the chemical composition of the rinsing agent.
  • rinse water is first passed into the interior or washing compartment of the dishwasher 1. Depending on the washing program, this water may have different temperatures. Thus, a normal rinse is usually carried out at temperatures between 55-70 ° C and a rinse cycle at temperatures of 65-85 ° C.
  • the strongly alkaline solution is sucked in by the dosing system 2 by means of the pump 3 and the controller 7 and added to the rinsing solution, also called rinsing liquor.
  • the hydrogen peroxide on the surface of the dishes can work optimally. This will be a rinse result achieved, which has a better cleaning effect compared to conventional one-component detergents.
  • the water hardness in both cases was 8-10 ° d (degree of German hardness).
  • 3 ml of the rinse aid IEC 436 Type III was used.
  • From the one-component reference detergent 20 g were added to the wash liquor.
  • 40 g of the first components, ie the strongly alkaline solution and 10 g of the second components, ie the hydrogen peroxide solution, were added to the rinsing liquor.
  • the dosing system described above in connection with the two-component rinsing agent can, as already described, be used in conventional household dishwashers.
  • the two-component detergent u.a. also due to the low exposure time of the oxidant better cleaning results over other one-component cleaning agents.
  • the described two-component detergent and dosing can also be used in industrial dishwashers, as they u.a. used in large kitchens, old people's homes or hospitals.
  • the use concentration of the first components, ie the alkaline solution, in wash liquors with soft to medium water hardnesses, ie up to about 14 ° dH or less, is 1 to 2 g / L.
  • the preferred use concentration of the second components, ie the oxidative solution, in rinsing liquors of any water hardness, is 0.5-1 g / L.
  • the two-component detergent is compatible with the material, suitable for rinsing liquors of any water hardness and is free of nitrilotriacetic acid and ethylenediaminetetraacetic acid derivatives, phosphates and chlorine compounds.

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  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Detergent Compositions (AREA)
  • Washing And Drying Of Tableware (AREA)

Claims (4)

  1. Procédé pour faire fonctionner un lave-vaisselle (1) ménager et/ou industriel, mais pas un lave-vaisselle à convoyeur, pour le nettoyage à la machine d'articles à laver, comprenant les étapes suivantes :
    A) ajout dosé d'une solution fortement alcaline ayant un pH supérieur à 12 à une eau de lavage, la concentration de solution alcaline ajoutée à l'eau de lavage étant de 1 à 2 g/l pour une dureté de l'eau inférieure ou égale à 14 °dH, afin de dissoudre la saleté sur les articles à nettoyer, et
    B) ajout dosé d'une solution contenant du peroxyde d'hydrogène à l'eau de lavage,
    l'ajout dosé d'une solution contenant du peroxyde d'hydrogène à l'eau de lavage commençant entre 40 secondes et 2 minutes plus tard que l'ajout dosé de la solution fortement alcaline à l'eau de lavage, et
    l'ajout dosé étant effectué par la commande d'une première pompe (3) pour l'ajout dosé de la solution fortement alcaline et d'une deuxième pompe (4) pour l'ajout dosé de la solution contenant un oxydant.
  2. Procédé selon la revendication 1, caractérisé en ce que l'ajout dosé de la solution fortement alcaline selon l'étape A et l'ajout dosé de la solution contenant du peroxyde d'hydrogène selon l'étape B s'effectuent au moyen d'une installation de dosage (2).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la concentration de solution contenant du peroxyde d'hydrogène ajoutée dans l'eau de lavage est de 0,5 à 1 g/l.
  4. Procédé selon l'une des revendications précédentes, caractérisé en ce que le rapport entre la solution contenant du peroxyde d'hydrogène et la solution alcaline ajoutées est de 1 pour 1 à 1 pour 8.
EP12164223.5A 2011-05-24 2012-04-16 Agent de rinçage, utilisation de l'agent de rinçage dans une lave-vaisselle, lave-vaisselle et procédé de fonctionnement associé Active EP2529656B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011050624A DE102011050624A1 (de) 2011-05-24 2011-05-24 Verfahren zum Betrieb einer Geschirrspülmaschine, Spülmittel, Verwendung eines Spülmittels und Geschirrspülmaschine

Publications (3)

Publication Number Publication Date
EP2529656A2 EP2529656A2 (fr) 2012-12-05
EP2529656A3 EP2529656A3 (fr) 2013-07-24
EP2529656B1 true EP2529656B1 (fr) 2019-06-12

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EP12164223.5A Active EP2529656B1 (fr) 2011-05-24 2012-04-16 Agent de rinçage, utilisation de l'agent de rinçage dans une lave-vaisselle, lave-vaisselle et procédé de fonctionnement associé

Country Status (2)

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EP (1) EP2529656B1 (fr)
DE (1) DE102011050624A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202022105026U1 (de) 2022-09-07 2024-01-12 Stockmeier Chemie Gmbh & Co. Kg Bandspülmaschine

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3920728C2 (de) * 1989-06-24 1993-11-04 Henkel Kgaa Verfahren zum betrieb einer geschirrspuelmaschine und vorrichtung zum durchfuehren des verfahrens
DE4113024A1 (de) * 1991-04-20 1992-10-22 Henkel Kgaa Verfahren zum maschinellen reinigen von gebrauchsgeschirr
GB9423952D0 (en) * 1994-11-24 1995-01-11 Unilever Plc Cleaning compositions and their use
TWI264465B (en) * 2001-07-10 2006-10-21 Kao Corp Two-agent type liquid bleaching compositions
US6792637B2 (en) * 2002-01-08 2004-09-21 U.S. Chemical Corporation Automatic detergent dispensing system for a warewasher
AT6023U1 (de) * 2002-04-19 2003-03-25 Hagleitner Betr Shygiene Ges M Dosiereinrichtung
DE102004009721A1 (de) * 2003-03-03 2004-09-16 Miele & Cie. Kg Verfahren zum Reinigen und Desinfizieren medizinischer Instrumente
DE102007042857A1 (de) * 2007-09-10 2009-03-12 Henkel Ag & Co. Kgaa Verfahren zum maschinellen Reinigen von Geschirr

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202022105026U1 (de) 2022-09-07 2024-01-12 Stockmeier Chemie Gmbh & Co. Kg Bandspülmaschine

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Publication number Publication date
EP2529656A2 (fr) 2012-12-05
EP2529656A3 (fr) 2013-07-24
DE102011050624A1 (de) 2012-11-29

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