EP1703964B1 - Verfahren und vorrichtung zur herstellung einer waschmittelvorratslösung für industrielle waschmaschinen - Google Patents

Verfahren und vorrichtung zur herstellung einer waschmittelvorratslösung für industrielle waschmaschinen Download PDF

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Publication number
EP1703964B1
EP1703964B1 EP04700043A EP04700043A EP1703964B1 EP 1703964 B1 EP1703964 B1 EP 1703964B1 EP 04700043 A EP04700043 A EP 04700043A EP 04700043 A EP04700043 A EP 04700043A EP 1703964 B1 EP1703964 B1 EP 1703964B1
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EP
European Patent Office
Prior art keywords
detergent
preparation tank
mixing chamber
water
stock solution
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.)
Expired - Lifetime
Application number
EP04700043A
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English (en)
French (fr)
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EP1703964A1 (de
Inventor
Alexander GÜTHER
Thomas Fassbender
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Ecolab Inc
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Ecolab Inc
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Filing date
Publication date
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Publication of EP1703964A1 publication Critical patent/EP1703964A1/de
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Publication of EP1703964B1 publication Critical patent/EP1703964B1/de
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Classifications

    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/40—Mixing liquids with liquids; Emulsifying
    • B01F23/41—Emulsifying
    • B01F23/4105—Methods of emulsifying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/10—Mixing by creating a vortex flow, e.g. by tangential introduction of flow components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
    • B01F25/23—Mixing by intersecting jets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
    • B01F25/25—Mixing by jets impinging against collision plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/70—Spray-mixers, e.g. for mixing intersecting sheets of material
    • B01F25/72—Spray-mixers, e.g. for mixing intersecting sheets of material with nozzles
    • B01F25/721—Spray-mixers, e.g. for mixing intersecting sheets of material with nozzles for spraying a fluid on falling particles or on a liquid curtain
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise

Definitions

  • the present invention is related to a method for producing a detergent stock solution for use in industrial washing machines as well as an apparatus for producing such detergent stock solution.
  • this invention relates to a method with the features of the introductory part of claim 1 and an apparatus with the features of the introductory part of claim 11.
  • Prior art discloses a method for dissolving a predetermined quantity of finely divided solid detergent product by stirring it with a given quantity of water ( EP-B-0 917 906 ).
  • water within the meaning of this prior art and within the meaning of the present invention means water or any other liquid on a water basis with other components dissolved or dispersed in water.
  • Another prior art method uses a non-aqueous liquid detergent product which is diluted by a sufficient amount of water in a mixing tank. From the mixing tank the liquid detergent is pumped into the industrial washing machine ( WO-A-95/04183 , Fig. 3 ).
  • the usual pump means used in such a system is a rotary pump.
  • a rotary pump normally is a thixotropic product, i. e. a product with a viscosity decreasing when the product is mechanically stirred or the like.
  • the detergent paste product with normally high viscosity is mechanically moved so that its viscosity is reduced, enabling direct introduction of this product into the washing process in the washing machine.
  • This kind of method requires complicated armatures and expensive equipment. It is not possible to produce a detergent stock solution. Because of the paste product's structural disadvantages, normally the method for producing a detergent stock solution based on the use of powdery detergent product is used for industrial applications.
  • the method and apparatus for producing a detergent stock solution from a detergent paste product for use in industrial washing machines that forms the starting point of the invention provides a stepwise system with a mixing chamber and a preparation tank downstream of the mixing chamber ( US-A-4,889,644 ).
  • the preparation tank forms an intermediate container upstream of the point of use so that an adequate supply of an aqueous detergent product is available in the event of intermittent operation of the individual industrial washing machine.
  • the preparation tank may be equipped with a mixer or stirrer.
  • the detergent stock solution in the preparation tank may be constantly pump-circulated through a ring-pipe system.
  • the object of the present invention is to provide an improved method for producing a detergent stock solution for use in industrial washing machines using a detergent paste product.
  • Preferred embodiments of either the method or the apparatus are the subject matter of the dependent method-claims or dependent apparatus-claims.
  • step a) covers not only pumping as such, but also conveying of the detergent paste product e. g. by an extrusion screw or the like.
  • the essential aspect is that the detergent product is moved by a means that is adapted to the particular viscosity of this product in order to transport the detergent product into the mixing chamber.
  • the delivered detergent paste product is mixed in a first mixing step with water from a water supply which is normally a water tap.
  • the mixing chamber forms a first and essential part of a succession of mixing stations.
  • the second station is the mixture pump means. It depends on the specifics of this mixture pump means how intensive the mixing effect is. It will be very intensive if a rotary pump means like the one mentioned in the prior art above is used.
  • water covers also water with certain ingredients or supplements.
  • the detergent paste product When leaving the mixture pump means, the detergent paste product is finely dissolved or dispersed in the water and now reaches the preparation tank where it is collected for further processing either towards the washing machine or towards a storage tank.
  • the preparation tank is the third station for mixing by means of a stirring system in the tank.
  • the preparation tank is the location where the concentration of detergent product in the final washing liquid is calculated. This is done by the features f), g) and h) of claim 1 by calculating the concentration of the detergent stock solution in the preparation tank itself.
  • the inventive method provides a particularly simple and effective way to define the concentration of the detergent stock solution.
  • this apparatus shows the features of claim 11.
  • Main items of this apparatus are the mixing chamber, the mixture pump means and the preparation tank with its weighing means.
  • Subject of the present invention is a method for producing a detergent stock solution for use in industrial washing machines.
  • a first step is pumping a predetermined amount or a predetermined mass flow or volume flow of a detergent paste product from a paste stock container to a mixing chamber. Simultaneously with this step a controlled volume flow or mass flow of water from a water supply, preferably a water tap, is introduced to the mixing chamber. Mixing of the detergent paste product with the water in the mixing chamber is done in a first mixing step. The detergent mixture is then pumped from the mixing chamber to a preparation tank by means of a mixture pump means. The detergent mixture coming from the mixture pump means is collected in the preparation tank.
  • washing means, in general, conveying the detergent paste product to the mixing chamber in a suitable way adapted to the specific characteristics of the paste product.
  • the detergent paste product shall be finely dissolved or dispersed within the water in the preparation tank forming the final detergent stock solution that can be used then in the industrial washing machine.
  • the stream of detergent paste product is introduced into the mixing chamber as thin strands or a succession of small droplets of paste product. This result can be achieved preferably in that the stream of detergent paste product is introduced into the mixing chamber through a sieve.
  • the detergent paste product is introduced into the mixing chamber passing through a valve means, wherein, preferably, the sieve is combined with the valve means.
  • This valve means allows for a complete shutoff.
  • the stream of detergent paste product is directed downwardly when introduced into the mixing chamber. Neither suction nor mixing is done against the gravitational forces. This is particularly helpful with detergent products like a paste product.
  • the high speed of water introduced into the mixing chamber and the resulting impact should be used to further dissolve or disperse the detergent paste product. So, it is preferred that the water is introduced into the mixing chamber as a stream directed towards the stream of detergent paste product. In a particularly preferred embodiment, it is proposed that the water be introduced into the mixing chamber in a way that the stream of detergent paste product is directed towards a sidewall of the mixing chamber. The reason is that a stream of detergent paste product, in the preferred embodiment the number of thin strands of detergent paste product, is/are directed towards the side wall of the mixing chamber by means of the impact of the stream of water. It is better to prevent the detergent paste product from reaching the bottom of the mixing chamber, because then the detergent paste product tends to accumulate at the bottom and to form a kind of residual paste cake that impairs the effectiveness of the mixing process.
  • This particular method can be further improved in that the water is introduced into the mixing chamber so that it initiates a swirling movement of water and detergent paste product within the mixing chamber.
  • Mixing of the detergent paste product with water in the mixing chamber is particularly improved if the mixing chamber gets a funnel-shaped contour.
  • a funnel-shaped contour improves the swirling movement of the water stream along the sidewall as well as the mixing effect.
  • the intensity of the resulting mixing effect depends on the specifics of the mixture pump means that are used in this method. If a rotary pump means like the one mentioned in the prior art above is used, this mixing effect will be very intensive indeed.
  • a preferred embodiment of the invention provides that in the mixing chamber the detergent paste product is mixed with the water at an elevated detergent concentration and further water is added in the following method steps to reach the final detergent concentration.
  • the final concentration is between about 5 % and about 15 %, in particular about 10 %, and the elevated concentration is about 3 % to about 8 % higher than the final detergent concentration.
  • the further water is introduced directly into the preparation tank.
  • the further water is provided from the same water tap but passes an additional and separate water meter. It is a kind of by-pass of the mixing chamber to speed up the mixing process.
  • An example of an embodiment comprises a pump means for the detergent paste product with an average pumping rate of 4000 g/min. From the water tap a volume flow of water of 20 l/min is provided by means of a flow-volume controller. This means a maximum theoretical concentration (mass concentration) of 16,66 %. However, this is the theoretical upper limit of possible concentrations. In fact, during continuous use the pumping rate of the pumping means decreases and in the end a realistic approach will be about 15 %. If a final concentration of the paste stock solution of 10 % is intended, then this final concentration is reached only with additional water fed into the preparation tank in above mentioned by-pass system.
  • the detergent stock solution in the preparation tank be continuously or discontinuously stirred, preferably with a stirring means at or near to the bottom of the preparation tank.
  • the detergent mixture is pumped into the preparation tank at or near to the bottom of the preparation tank.
  • the fresh detergent mixture from the mixing pump means enters the preparation tank exactly where the stirring means acts so that the optimum mixing effect is achieved.
  • the volume of the detergent stock solution in the preparation tank is measured and/or controlled.
  • the level of the detergent stock solution in the preparation tank be kept between a maximum and a minimum level. Refilling of detergent mixture is started when the minimum level is reached and is stopped when the maximum level is reached. The level of detergent stock solution in the preparation tank stays between those values.
  • the minimum level indication stops pumping from the preparation tank and starts the pumping of detergent paste product from the paste stock container to the mixing chamber as well as the introduction of water from the water tap. As soon as the maximum level is reached, the supply of detergent stock solution to the preparation tank is stopped. This is preferably the level for the elevated concentration which will be reduced thereafter in a final by-pass-water step.
  • the mass of the detergent stock solution in the preparation tank be measured, preferably by means of a weighing means. This can be done by the means used in the prior art for the preparation tank in the method using the finally divided solid product.
  • the concentration is calculated from the mass of detergent paste product in the detergent stock solution in the preparation tank. This is done in the preferred embodiment of the invention in that the mass of detergent paste product in the detergent stock solution in the preparation tank is calculated from the difference between the mass of the detergent stock solution in the preparation tank as measured and the mass of water introduced as measured in all steps of the method, preferably as measured by a water meter in step b) or water meters for different steps.
  • the calculation of the electronic control system is based on the intended concentration, the necessary supply of detergent paste product from the paste stock container, the measured supply of water from the water tap, measured by means of a water meter, and finally the measurement of the weight of the preparation tank with the detergent stock solution in it by means of weight cells or the like.
  • weight cells are susceptible to high temperature, water of less than 60°C should be used.
  • This method can occur in two steps. First of all, there is a calculation of the difference from the mixture received from the mixing pump means in the preparation tank compared to the water supplied from the water tap and measured by the water meter. The final product in the preparation tank then still has the elevated concentration of detergent product. In order to reduce this concentration from the elevated level to the intended level, water is additionally supplied to the preparation tank directly from the by-pass supply over a second water meter. By measuring the weight of the preparation tank with the detergent stock solution, it is possible to precisely reach the intended final concentration of e.g. 10 % of detergent stock solution. This specific version with a water by-pass directly into the preparation tank reduces the time necessary to complete a supply of detergent stock solution. This last step may be performed without an additional weighing step, i.e. just calculating the final amount and concentration from the by-pass-water as measured by a water meter.
  • washing aids are always prepared in liquid form and are directly measured into the washing machine. This requires extended supply lines, valve systems and control equipment.
  • a washing aid that is stable together with the detergent directly into the preparation tank and to feed then the supplemented detergent stock solution either to a storage tank or directly to the washing machine.
  • the washing aid such as a softening aid or perfume carrier, may have the form of a liquid or may be present in finely divided solid form.
  • more than one washing aid may be introduced into the preparation tank provided that is stable together with the detergent.
  • FIG. 1 show a preferred embodiment which discloses the best mode to practice the invention.
  • the principle of the apparatus and method can be obtained from Fig. 1 .
  • Fig. 1 shows an apparatus for producing a detergent stock solution for use in industrial washing machines, comprising a paste stock container 1 containing a supply of detergent paste product 2, a mixing chamber 3 and a paste pumping means 4 for pumping the detergent paste product 2 from the paste stock container 1 to the mixing chamber 3.
  • a paste stock container 1 containing a supply of detergent paste product 2, a mixing chamber 3 and a paste pumping means 4 for pumping the detergent paste product 2 from the paste stock container 1 to the mixing chamber 3.
  • the paste stock container 1 may further contain a stirring means. Due to the thixotropic characteristics of such detergent paste product 2 in the paste stock container 1 the viscosity decreases when a slow stirring movement is introduced into the stock of paste product.
  • conduit 5 for the detergent paste product 2 leads to the mixing chamber 3.
  • a water supply 6 is provided, preferably in the form of a water tap, the water supply 6 being connected to a water supply outlet 7 at the mixing chamber 3, a preparation tank 9 for collecting a supply of detergent stock solution 10, a mixture pump means 11 for pumping the detergent mixture from the mixing chamber 3 to the preparation tank 9, a control means 12 controlling operation of all pump means 4; 11 and auxiliary items like valve means 13, 14, 15 for preparation and storage of the detergent stock solution 10.
  • the control means 12 may be a programmable digital control means.
  • the connections from the control means 12 to the different sensors and control drives etc. are not shown in order to improve legibility of Fig. 1 .
  • the water supply 6 is a warm water supply for water with a temperature higher than 25°C, preferably warm water at a temperature between 30°C and 40°C.
  • a fairly important feature of the method is to introduce the stream of detergent paste product 2 into the mixing chamber 3 as thin strands or a succession of small droplets of the paste product.
  • the apparatus provides a dividing means 16, preferably a sieve or a screen of metal or plastics at an outlet of the conduit 5 for the detergent paste product at the mixing chamber 3.
  • those dividing means 16 can have any appropriate form, size and material suitable to achieve the division of the stream 17 of detergent paste product into those thin strands or succession of small droplets. The result is an improved mixing of the paste product with the water in the mixing chamber 3.
  • valve means 13 This is a valve means at the outlet of the conduit 5 for paste product.
  • the dividing means 16 is positioned downstream of the valve means 13.
  • Valve means 13 will normally be a shut off valve controlled by control means 12.
  • Fig. 1 to 3 shows that the dividing means 16 is intentionally positioned at the top of the mixing chamber 3. This means that the stream 17 of detergent paste product 2 is directed downwardly when introduced into the mixing chamber 3. This has the advantages explained already in connection with the method-steps.
  • mixing efficiency in the mixing chamber 3 is further improved in that the water supply outlet 7 is positioned at the mixing chamber 3 at a place and with an orientation that the water is introduced into the mixing chamber 3 as a stream directed towards the stream 17 of detergent paste product.
  • Fig. 3 shows that here the water is introduced into the mixing chamber 3 in a way that the stream 17 of detergent paste product is directed towards a side wall 18 of the mixing chamber 3.
  • the stream 17 of detergent paste product 2 is deflected towards the side wall 18 of the mixing chamber 3 with the result explained above in connection with the method.
  • the water supply outlet 7 is positioned at the mixing chamber 3 at a place and with an orientation that the water is introduced into the mixing chamber 3 so that it initiates a swirling movement of water and detergent paste product 2 within the mixing chamber 3.
  • Fig. 2 explains a specific design of the mixing chamber 3.
  • the mixing chamber 3 has a funnel-shaped contour.
  • the preferred embodiment shows a mixing chamber 3 that is open to the ambient atmosphere.
  • Fig. 3 shows that here the valve means 15 is provided downstream of the mixture pump means 11.
  • a by-pass water supply directly into the preparation tank 9 increases the effectiveness and speed of the mixing process.
  • a second water supply 19 preferably in the form of a water tap, is provided at the preparation tank 9.
  • a valve means 19' is provided as well.
  • the water meter 21 is provided at the water supply 6 as well as a water meter 22 at the second water supply 19 for the by-pass water fed directly into the preparation tank 9.
  • Fig. 1 shows a further improved embodiment in that a stirring means 23 is provided at or near to the bottom of the preparation tank 9. This is particularly effective, because the exit of a conduit 24 from the mixture pump means 11 is positioned in the preparation tank 9 at or near to the bottom of the preparation tank 9. So the introduction of the mixture from the mixture pump means 11 is exactly where the stirring means 23 is operating. This improves the efficiency of the further mixing step in the preparation tank 9.
  • control means 12 shall be able to control and calculate the concentration of the detergent stock solution 10 that ends in the preparation tank 9.
  • the volume of the detergent stock solution 10 in the preparation tank 9 is measured and/or controlled by means of a level gauge 25.
  • a level gauge 25 can be a mechanical system.
  • electronic measuring systems for a liquid level in a tank are widely used.
  • a preferred embodiment can employ a radar-related measurement from top to bottom, other systems employ capacitive level sensors, ultrasonic sensing, or laser measurements.
  • the level gauge 25 it is possible to use the level gauge 25 as a backup means for control failure only. Then the level in the preparation tank 9 is normally only calculated from the output signals of the weighing cells 27.
  • the level gauge 25 must measure the filling level, at least a maximum level and a minimum level. When the maximum level is reached, the control means 12 stops further supply of detergent paste product 2 and water. However, the level gauge 25 should be able to measure a level lower than the maximum level, because it may be necessary that the control means 12 stops the paste pumping means 4 somewhat earlier than the by-pass water supply 19.
  • a minimum level must be measured by the level gauge 25, in order to stop further pumping from the preparation tank 9 so that always a minimum level of stock solution 10 remains in the preparation tank 9.
  • the level can be kept between a maximum of 500 1 and a minimum of 100 l.
  • the preparation tank 9 is equipped with a weighing means 26 so that the mass of the detergent stock solution 10 in the preparation tank 9 is measured.
  • the weighing means 26 comprises three weight cells 27 equally distributed below the bottom of the preparation tank 9. Weight cells of this kind are employed in the weighing means of the prior art EP 0 917 906 B1 as well.
  • control means 12 calculates the concentration of detergent paste product 2 in the detergent stock solution 10 in the preparation tank 9 in an indirect way.
  • the control means 12 is provided to calculate the mass of detergent paste product 2 in the detergent stock solution 10 in the preparation tank 9 from the difference between the mass of the detergent stock solution 10 in the preparation tank 9 as measured and the mass of water introduced as measured from the water supply 6 or the water supplies 6, 19.
  • an additional feed conduit 28 or the like is provided at the preparation tank 9 for the introduction at least one washing aid that is stable together with the detergent.
  • the additional feed conduit 28 is for one liquid washing aid that is stable when stored with the detergent stock solution 10.
  • Fig. 1 shows further conduit means 29, pump means 30a, 30b and valve means 31 a, 31 b providing the connection from the preparation tank 9 to the storage tank.
  • the dual line system with two pump means 30a, 30b allows pumping from the preparation tank 9 to the storage tank from two different levels of the preparation tank 9.

Claims (21)

  1. Verfahren zur Herstellung einer Waschmittelvorratslösung (10) zur Verwendung in industriellen Waschmaschinen mit den folgenden Schritten:
    a) Pumpen einer vorbestimmten Menge oder eines vorbestimmten Massenstroms oder Volumenstroms eines Waschmittelpastenprodukts (2) von einem Pastenvorratsbehälter (1) zu einer Mischkammer (3),
    b) gleichzeitig mit Schritt a) Einleiten eines gesteuerten Wasser-Volumenstroms oder -Massenstroms aus einer Wasserversorgung (6) zu der Mischkammer (3),
    c) Mischen des Waschmittelpastenprodukts (2) mit dem Wasser in der Mischkammer (3) in einem ersten Mischschritt, gekennzeichnet durch die folgenden Schritte:
    d) Pumpen des Waschmittelgemisches aus der Mischkammer (3) zu einem Aufbereitungsbehälter (9) mittels eines Gemischpumpmittels (11),
    e) Auffangen des von dem Gemischpumpmittel (11) kommenden Waschmittelgemisches als eine Waschmittelvorratslösung (10) in dem Aufbereitungsbehälter (9),
    wobei
    f) die Masse an Waschmittelvorratslösung (10) in dem Aufbereitungsbehälter (9) durch ein Wägemittel (26) gemessen wird,
    g) die Masse an Waschmittelpastenprodukt (2) in der Waschmittelvorratslösung (10) im Aufbereitungsbehälter (9) aus der Differenz zwischen der Masse an Waschmittelvorratslösung (10) im Aufbereitungsbehälter (9), wie gemessen, und der Masse an eingeleitetem Wasser, wie gemessen, berechnet wird,
    h) die Konzentration der Waschmittelvorratslösung (10) aus der Masse an Waschmittelpastenprodukt (2) in der Waschmittelvorratslösung (10) im Aufbereitungsbehälter (9) berechnet wird.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet,
    dass
    warmes Wasser mit einer Temperatur von über 25°, vorzugsweise warmes Wasser mit einer Temperatur zwischen 30°C und 40°C, zumindest in Schritt b), vorzugsweise in allen mit Wasser in Zusammenhang stehenden Schritten des Verfahrens, verwendet wird.
  3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass
    der Strom (17) von Waschmittelpastenprodukt (2) in als dünne Stränge oder eine Folge kleiner Topfen des Pastenprodukts in die Mischkammer (3) eingeleitet wird,
    wobei der Strom (17) von Waschmittelpastenprodukt (2) vorzugsweise durch ein Sieb in die Mischkammer (3) eingeleitet wird.
  4. Verfahren nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass
    das Waschmittelpastenprodukt (2) durch ein Ventilmittel (13) in die Mischkammer (3) eingeleitet wird, wobei das Sieb vorzugsweise mit dem Ventilmittel (13) kombiniert wird, und/oder
    der Strom (17) von Waschmittelpastenprodukt (2) nach unten geleitet wird, wenn er in die Mischkammer (3) eingeleitet wird.
  5. Verfahren nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass
    das Wasser als ein zu dem Strom (17) von Waschmittelpastenprodukt (2) gerichteter Strom in die Mischkammer (3) eingeleitet wird,
    wobei das Wasser vorzugsweise so in die Mischkammer (3) eingeleitet wird, dass der Strom (17) von Waschmittelpastenprodukt (2) zu einer Seitenwand (18) der Mischkammer (3) gerichtet wird, und/oder
    wobei das Wasser so in die Mischkammer (3) eingeleitet wird, dass es eine Wirbelbewegung des Wassers und Waschmittelpastenprodukts (2) in der Mischkammer (3) einleitet.
  6. Verfahren nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass
    die Mischkammer (3) dem Strom (17) von Wasser und Waschmittelpastenprodukt (2) eine trichterförmige Kontur präsentiert und/oder
    das Waschmittelpastenprodukt (2) mit dem Wasser in der zur umliegenden Atmosphäre offenen Mischkammer (3) gemischt wird, und/oder
    das Waschmittelpastenprodukt (2) in einem zweiten Mischschritt, der von dem Gemischpumpmittel (11) durchgeführt wird, weiter intensiv mit dem Wasser vermischt wird.
  7. Verfahren nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass
    das Wascklmittelpastenprodukt (2) in der Mischkammer (3) mit dem Wasser mit einer erhöhten Waschmittelkonzentration vermischt wird und weiteres Wasser in den folgenden Verfahrensschritten gemessen und zugesetzt wird, um die Waschmittelendkonzentration zu erreichen,
    wobei die Endkonzentration vorzugsweise zwischen 5% und 15%, insbesondere bei 10%, liegt, und die erhöhte Konzentration um 3% bis 8% über der Waschmittelendkonzentration liegt, und/oder
    das weitere Wasser in den Aufbereitungsbehälter (9) eingeleitet wird.
  8. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Waschmittelvorratslösung (10) im Aufbereitungsbehälter (9) kontinuierlich oder unterbrochen, vorzugsweise mit einem Rührmittel (23) am oder nahe dem Boden des Aufbereitungsbehälters (9), gerührt wird.
  9. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Waschmittelgemisch an oder nahe dem Boden des Aufbereitungsbehälters (9) in den Aufbereitungsbehälter (9) gepumpt wird, und/oder
    das Volumen der Waschmittelvorratslösung (10) im Aufbereitungsbehälter (9) gemessen und/oder gesteuert wird,
    wobei der Pegel der Waschmittelvorratslösung (10) im Aufbereitungsbehälter (9) vorzugsweise zwischen einem Höchst- und einem Mindestpegel gehalten wird,
    wobei ein Nachfüllen von Waschmittelgemisch vorzugsweise dann begonnnen wird, wenn der Mindestpegel erreicht ist, und dann angehalten wird, wenn der Höchstpegel erreicht ist.
  10. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass mindestens eine Waschhilfe, die zusammen mit dem Waschmittel stabil ist, in den Aufbereitungsbehälter (9) eingegeben wird,
    wobei die Waschhilfe oder die Waschhilfen vorzugsweise in flüssiger oder feingeteilter fester Form in den Aufbereitungsbehälter (9) eingegeben wird bzw. werden, und/oder
    wobei die Waschmittelvorratslösung (10) nach Erreichen des Höchstpegels im Aufbereitungsbehälter (9) und ausreichendem Rühren und/oder Mischen in einen Speicherbehälter gepumpt wird.
  11. Vorrichtung zur Herstellung einer Waschmittelvorratslösung (10) zur Verwendung in industriellen Waschmaschinen, die Folgendes umfasst:
    einen Pastenvorratsbehälter (1), der einen Vorrat an Waschmittelpastenprodukt (2) enthält,
    eine Mischkammer (3),
    ein Pastenpumpmittel (4) zum Pumpen des Waschmittelpastenprodukts (2) aus dem Pastenvorratsbehälter (1) in die Mischkammer (3),
    eine Wasserversorgung (6), die an der Mischkammer (3) mit dem Wasserversorgungsauslass (7) verbunden ist,
    einen Aufbereitungsbehälter (9) zum Auffangen einer Versorgung von Waschmittelvorratslösung (10),
    Ventilmittel (13, 14, 15) und
    ein Steuermittel (12),
    gekennzeichnet durch
    ein Gemischpumpmittel (11) zum Pumpen des Waschmittelgemisches aus der Mischkammer (3) zum Aufbereitungsbehälter (9),
    wobei
    der Aufbereitungsbehälter (9) mit einem Wägemittel (26) ausgestattet ist, so dass die Masse an Waschmittalvorratslösung (10) im Aufbereitungsbehälter (9) gemessen wird,
    das Steuermittel (12) den Betrieb aller Pumpmittel (4; 11) und Ventilmittel (13, 14, 15) zum Aufbereiten und Lagern der Waschmittelvorratslösung (10) steuert,
    das Steuermittel (12) zum Berechnen der Masse an Waschmittelpastenprodukt (2) in der Waschmittelvorratslösung (10) im Aufbereitungsbehälter (9) aus der Differenz zwischen der Masse an Waschmittelvorratslösung (10) im Aufbereitungsbehälter (9), wie gemessen, und der Masse an eingeleitetem Wasser, wie anhand der Wasserversorgung (6) oder der Wasserversorgungen (6, 19) gemessen, vorgesehen ist, und
    das Steuermittel (12) zum Berechnen der Konzentration aus der Masse an Waschmittelpastenprodukt (2) in der Waschmittelvorratslösung (10) im Aufbereitungsbehälter (9) vorgesehen ist.
  12. Vorrichtung nach Anspruch 11, dadurch gekennzeichnet, dass
    die Wasserversorgung (6) eine Warmwasserversorgung für Wasser mit einer Temperatur von über 25°C, vorzugsweise warmes Wasser mit einer Temperatur zwischen 30°C und 40°C, ist.
  13. Vorrichtung nach einem der vorhergehenden Vorrichtungsanspxüche, dadurch gekennzeichnet, dass
    ein Trennmittel (16), vorzugsweise ein Sieb aus Metall oder Kunststoff, an einem Auslass einer Leitung (24) für das Waschmittelpastenprodukt (2) an der Mischkammer (3) vorgesehen ist, und/oder
    ein Ventilmittel (13) an einem Auslass einer Leitung (24) für das Waschmittelpastenprodukt (2) an der Mischkammer (3) vorgesehen ist,
    wobei das Trennmittel (16) vorzugsweise stromabwärts des Ventilmittels (13) vorgesehen ist.
  14. Vorrichtung nach Anspruch 13, dadurch gekennzeichnet, dass
    das Trennmittel (16) am oberen Ende der Mischkammer (3) vorgesehen ist, so dass der Strom (17) von Waschmittelpastenprodukt (2) nach unten geleitet wird, wenn er in die Mischkammer (3) eingeleitet wird,
    wobei der Wasserversorgungsauslass (7) vorzugsweise an der Mischkammer (3) an einer solchen Stelle und mit solch einer Ausrichtung positioniert ist, dass das Wasser als ein zu dem Strom (17) von Waschmittelpastenprodukt (2) gerichteter Strom in die Mischkammer (3) eingeleitet wird,
    wobei das Wasser weiterhin vorzugsweise so in die Mischkammer (3) eingeleitet wird, dass der Strom (17) von Waschmittelpastenprodukt (2) zu einer Seitenwand (18) der Mischkammer (3) gerichtet wird.
  15. Vorrichtung nach einem der vorhergehenden Vorrichtungsansprüche, dadurch gekennzeichnet, dass
    der Wasserversorgungsauslass (7) an einer solchen Stelle und mit solch einer Ausrichtung an der Mischkammer (3) positioniert ist, dass das Wasser so in die Mischkammer (3) eingeleitet wird, dass es eine Wirbelbewegung von Wasser und Waschmittelpastenprodukt (2) in der Mischkammer (3) einleitet, und/oder
    die Mischkammer (3) eine trichterförmige Kontur aufweist, und/oder
    die Mischkammer (3) zur umgebenden Atmosphäre offen ist.
  16. Vorrichtung nach einem der vorhergehenden Vorrichtungsansprüche, dadurch gekennzeichnet, dass
    das Gemischpumpmittel (11) eine Rotationspumpe mit großer Mischleistung für das Waschmittelpastenprodukt (2) in Wasser ist, und/oder
    ein Ventilmittel (13) stromabwärts des Gemischpumpmittels (11) vorgesehen ist, und/oder
    eine zweite Wasserversorgung (19) am Aufbereitungsbehälter (9) vorgesehen ist.
  17. Vorrichtung nach einem der vorhergehenden Vorrichtungsansprüche, dadurch gekennzeichnet, dass
    ein Wasserzähler (21; 22) an der Wasserversorgung (6) und, falls vorhanden, an der zweiten Wasserversorgung (19) vorgesehen ist, und/oder
    ein Rührmittel (23) an oder nahe dem Boden des Aufbereitungsbehälters (9) vorgesehen ist, und/oder
    ein Auslass aus einer Leitung (24) vom Gemischpumpmittel (11) im Aufbereitungsbehälter (9) an oder nahe dem Boden des Aufbereitungsbehälters (9) vorgesehen ist.
  18. Vorrichtung nach einem der vorhergehenden Vorrichtungsansprüche, dadurch gekennzeichnet, dass
    das Volumen der Waschmittelvorratslösung (10) im Aufbereitungsbehälter (9) durch einen Pegelmesser (25) gemessen und/oder gesteuert wird,
    wobei der Pegelmesser (25) vorzugsweise den Füllstand der Waschmittelvorratslösung (10) im Aufbereitungsbehälter (9) oder zumindest einen Höchstpegel und einen Mindestpegel der Waschmittelvorratslösung (10) im Aufbereitungsbehälter (9) misst.
  19. Vorrichtung nach einem der vorhergehenden Vorrichtungsansprüche, dadurch gekennzeichnet, dass
    das Wägemittel (26) eine Anzahl von, vorzugsweise drei, Wägezellen (27) umfasst.
  20. Vorrichtung nach einem der vorhergehenden Vorrichtungsansprüche, dadurch gekennzeichnet, dass
    eine zusätzliche Zufuhrleitung (28) am Aufbereitungsbehälter (9) zum Einleiten mindestens einer Waschhilfe, die zusammen mit dem Waschmittel stabil ist, vorgesehen ist,
    wobei die Waschhilfe oder die Waschhilfen vorzugsweise in flüssiger oder feingeteilter fester Form in den Aufbereitungsbehälter (9) eingegeben wird bzw. werden.
  21. Vorrichtung nach einem der vorhergehenden Vorrichtungsansprüche, dadurch gekennzeichnet, dass
    ein weiteres Leitungsmittel (29), Pumpmittel (30) und/oder Ventilmittel (31) mit dem Aufbereitungsbehälter (9) verbunden ist/sind, die eine Verbindung vom Aufbereitungsbehälter (9) zu einem Speicherbehälter für Waschmittelvorratslösung (10) bereitstellen.
EP04700043A 2004-01-02 2004-01-02 Verfahren und vorrichtung zur herstellung einer waschmittelvorratslösung für industrielle waschmaschinen Expired - Lifetime EP1703964B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2004/000005 WO2005068060A1 (en) 2004-01-02 2004-01-02 Method and apparatus for producing a detergent stock solution for use in industrial washing machines

Publications (2)

Publication Number Publication Date
EP1703964A1 EP1703964A1 (de) 2006-09-27
EP1703964B1 true EP1703964B1 (de) 2008-06-18

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AT (1) ATE398486T1 (de)
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DK (1) DK1703964T3 (de)
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007146458A2 (en) * 2006-03-30 2007-12-21 Johnsondiversey, Inc. Powdered and liquid chemical dispensing and distribution system
CN110042627A (zh) * 2018-01-15 2019-07-23 无锡小天鹅股份有限公司 洗衣机
CN111304881B (zh) * 2020-03-02 2023-10-13 珠海格力电器股份有限公司 洗涤液盒、洗衣机、洗涤液液位检测及降低粘稠度的方法
CN113457561A (zh) * 2021-05-20 2021-10-01 赵焕焕 一种临床营养科用营养液调配装置

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US3570717A (en) * 1969-01-08 1971-03-16 Stauffer Chemical Co System for fluent material dispensing with electrical controls
US4489574A (en) * 1981-11-10 1984-12-25 The Procter & Gamble Company Apparatus for highly efficient laundering of textiles
DE3719906A1 (de) * 1987-06-15 1988-12-29 Henkel Kgaa Maschinelles waschverfahren
DE69409240T2 (de) * 1993-07-30 1998-07-23 Unilever Nv Verfahren zum dosieren von waschmittelprodukten
DE4332849A1 (de) * 1993-09-27 1995-03-30 Henkel Kgaa Pastenförmiges Waschmittel
DE59707082D1 (de) * 1997-10-17 2002-05-23 Henkel Ecolab Gmbh & Co Ohg Injektor mit vakuumgebinde
CH692274A5 (de) * 1998-02-04 2002-04-30 Gericke Ag Kontinuierlicher Mischer, Mischanlage mit einem kontinuierlichen Mischer sowie Verfahren zum Betrieb einer solchen Mischanlage.
US6691536B2 (en) * 2000-06-05 2004-02-17 The Procter & Gamble Company Washing apparatus
JP4451581B2 (ja) * 2001-09-28 2010-04-14 株式会社日本触媒 重合防止剤の作成供給装置および作成供給方法
DE10159162B4 (de) * 2001-12-01 2009-12-31 Ecolab Inc., St. Paul Einrichtung zum Dosieren eines pastösen Waschmittels
DE10159163B4 (de) * 2001-12-01 2005-10-13 Ecolab Inc., St. Paul Einrichtung und Verfahren zum Dosieren pastöser Produkte

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WO2005068060A1 (en) 2005-07-28
DK1703964T3 (da) 2008-09-15
ES2308134T3 (es) 2008-12-01
DE602004014534D1 (de) 2008-07-31
ATE398486T1 (de) 2008-07-15

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