EP1703964B1 - Methode et appareil de production d'une solution detergente de reserve a utiliser dans des machines a laver industrielles - Google Patents

Methode et appareil de production d'une solution detergente de reserve a utiliser dans des machines a laver industrielles 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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German (de)
English (en)
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EP1703964A1 (fr
Inventor
Alexander GÜTHER
Thomas Fassbender
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.)
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/fr
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Publication of EP1703964B1 publication Critical patent/EP1703964B1/fr
Anticipated expiration legal-status Critical
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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.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Accessories For Mixers (AREA)
  • Detergent Compositions (AREA)

Claims (21)

  1. Procédé de production d'une solution (10) de charge détergente destinée à être utilisée dans des machines à laver industrielles, comportant les étapes consistant à :
    a) pomper une quantité prédéterminée ou un débit massique ou volumique prédéterminé d'un produit détergent pâteux (2) d'un récipient (1) pour charge pâteuse à une chambre (3) de mélange,
    b) simultanément à l'étape a), introduire dans la chambre (3) de mélange un débit volumique ou massique contrôlé d'eau provenant d'une alimentation (6) en eau,
    c) mélanger le produit détergent pâteux (2) à l'eau dans la chambre (3) de mélange lors d'une première étape de mélange,
    caractérisé par les étapes suivantes :
    d) pomper le mélange détergent de la chambre (3) de mélange à une cuve (9) de préparation à l'aide d'un moyen (11) de pompage de mélange,
    e) collecter le mélange détergent provenant du moyen (11) de pompage de mélange sous la forme d'une solution (10) de charge détergente dans la cuve (9) de préparation,
    f) la masse de solution (10) de charge détergente présente dans la cuve (9) de préparation étant mesurée à l'aide d'un moyen (26) de pesage,
    g) la masse de produit détergent pâteux (2) contenue dans la solution (10) de charge détergente présente dans la cuve (9) de préparation étant calculée à partir de la différence entre la masse de la solution (10) de charge détergente présente dans la cuve (9) de préparation, telle que mesurée, et la masse d'eau introduite, telle que mesurée,
    h) la concentration de la solution (10) de charge détergente étant calculée à partir de la masse de produit détergent pâteux (2) contenue dans la solution (10) de charge détergente présente dans la cuve (9) de préparation.
  2. Procédé selon la revendication 1, caractérisé en ce que de l'eau tiède à une température supérieure à 25°C, de préférence de l'eau tiède à une température comprise entre 30°C et 40°C, est utilisée au moins lors de l'étape b), de préférence lors de toutes les étapes du procédé faisant intervenir de l'eau.
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que le flux (17) de produit détergent pâteux (2) est introduit dans la chambre (3) de mélange sous forme de filaments minces ou d'une succession de petites gouttelettes de produit pâteux,
    le flux (17) de produit détergent pâteux (2) étant de préférence introduit dans la chambre (3) de mélange à travers un tamis.
  4. Procédé selon l'une quelconque des revendications précédentes, caractérisé
    en ce que le produit détergent pâteux (2) est introduit dans la chambre (3) de mélange en traversant un moyen (13) de vanne, le tamis étant de préférence combiné au moyen (13) de vanne et / ou
    le flux (17) de produit détergent pâteux (2) étant dirigé vers le bas lorsqu'il est introduit dans la chambre (3) de mélange.
  5. Procédé selon l'une quelconque des revendications précédentes, caractérisé
    en ce que l'eau est introduite dans la chambre (3) de mélange sous la forme d'un flux dirigé vers le flux (17) de produit détergent pâteux (2),
    l'eau étant de préférence introduite dans la chambre (3) de mélange de telle sorte que le flux (17) de produit détergent pâteux (2) soit dirigé vers une paroi latérale (18) de la chambre (3) de mélange, et / ou
    l'eau étant introduite dans la chambre (3) de mélange de telle sorte qu'elle amorce un mouvement tourbillonnant d'eau et de produit détergent pâteux (2) à l'intérieur de la chambre (3) de mélange.
  6. Procédé selon l'une quelconque des revendications précédentes, caractérisé
    en ce que la chambre (3) de mélange présente un contour en forme d'entonnoir au flux (17) d'eau et de produit détergent pâteux (2), et / ou
    en ce que le produit détergent pâteux (2) est mélangé à l'eau à l'intérieur de la chambre (3) de mélange ouverte à l'atmosphère ambiante, et / ou
    en ce que le produit détergent pâteux (2) est en outre mélangé intensivement à l'eau lors d'une deuxième étape de mélange effectuée par le moyen (11) de pompage de mélange.
  7. Procédé selon l'une quelconque des revendications précédentes, caractérisé
    en ce que, dans la chambre (3) de mélange, le produit détergent pâteux (2) est mélangé à l'eau à une concentration élevée de détergent et en ce que de l'eau supplémentaire est dosée et ajoutée lors des étapes suivantes du procédé afin d'atteindre la concentration finale de détergent,
    la concentration finale étant de préférence comprise entre 5 % et 15 %, en particulier 10 %, et la concentration élevée étant de 3 % à 8 % supérieure à la concentration finale de détergent, et / ou
    l'eau supplémentaire étant introduite dans la cuve (9) de préparation.
  8. Procédé selon l'une quelconque des revendications précédentes, caractérisé
    en ce que la solution (10) de charge détergente présente dans la cuve (9) de préparation est brassée de façon continue ou discontinue, de préférence à l'aide d'un moyen (23) de brassage situé au niveau ou à proximité du fond de la cuve (9) de préparation.
  9. Procédé selon l'une quelconque des revendications précédentes, caractérisé
    en ce que le mélange détergent est pompé dans la cuve (9) de préparation au niveau ou à proximité du fond de la cuve (9) de préparation, et / ou
    en ce que le volume de la solution (10) de charge détergente présente dans la cuve (9) de préparation est mesuré et / ou régulé,
    le niveau de la solution (10) de charge détergente présente dans la cuve (9) de préparation étant de préférence maintenu entre un niveau maximal et un niveau minimal, le réapprovisionnement en mélange détergent étant de préférence entamé lorsque le niveau minimal est atteint et étant arrêté lorsque le niveau maximal est atteint.
  10. Procédé selon l'une quelconque des revendications précédentes, caractérisé
    en ce qu'au moins un adjuvant de lavage stable en présence du détergent est introduit dans la cuve (9) de préparation,
    l'adjuvant ou les adjuvants de lavage étant de préférence introduits dans la cuve (9) de préparation sous forme de liquide ou de solide finement divisé, et / ou
    la solution (10) de charge détergente, après avoir atteint le niveau maximal dans la cuve (9) de préparation et après un brassage et / ou un mélange suffisants, est pompée jusqu'à une cuve de stockage.
  11. Appareil de production d'une solution (10) de charge détergente destinée à être utilisée dans des machines à laver industrielles, comportant :
    un récipient (1) pour charge pâteuse contenant une réserve de produit détergent pâteux (2),
    une chambre (3) de mélange,
    un moyen (4) de pompage de pâte destiné à pomper le produit détergent pâteux (2) du récipient (1) pour charge pâteuse à la chambre (3) de mélange,
    une alimentation (6) en eau reliée à une sortie (7) d'alimentation en eau au niveau de la chambre (3) de mélange,
    une cuve (9) de préparation destinée à collecter une réserve de solution (10) de charge détergente,
    des moyens (13, 14, 15) de vannes et
    un moyen (12) de commande,
    caractérisé par
    un moyen (11) de pompage de mélange destiné à pomper le mélange détergent de la chambre (3) de mélange à la cuve (9) de préparation,
    la cuve (9) de préparation étant équipée d'un moyen (26) de pesage, de sorte que la masse de la solution (10) de charge détergente présente dans la cuve (9) de préparation est mesurée,
    le moyen (12) de commande commandant le fonctionnement de tous les moyens (4 ; 11) de pompage et de tous les moyens (13, 14, 15) de vannes en vue de la préparation et du stockage de la solution (10) de charge détergente,
    le moyen (12) de commande étant prévu pour calculer la masse de produit détergent pâteux (2) contenue dans la solution (10) de charge détergente présente dans la cuve (9) de préparation à partir de la différence entre la masse de la solution (10) de charge détergente présente dans la cuve (9) de préparation, telle que mesurée, et la masse d'eau introduite, telle que mesurée, à partir de l'alimentation (6) ou des alimentations (6, 19) en eau et
    le moyen (12) de commande étant prévu pour calculer la concentration à partir de la masse de produit détergent pâteux (2) contenue dans la solution (10) de charge détergente présente dans la cuve (9) de préparation.
  12. Appareil selon la revendication 11, caractérisé
    en ce que l'alimentation (6) en eau est une alimentation en eau tiède prévue pour de l'eau à une température supérieure à 25°C, de préférence de l'eau tiède à une température comprise entre 30°C et 40°C.
  13. Appareil selon l'une quelconque des revendications précédentes relatives à l'appareil, caractérisé
    en ce qu'un moyen (16) de division, de préférence un tamis ou un crible en métal ou en plastique, est installé à une sortie d'un conduit (24) destiné au produit détergent pâteux (2) au niveau de la chambre (3) de mélange, et / ou
    en ce qu'un moyen (13) de vanne est installé à une sortie d'un conduit (24) destiné au produit détergent pâteux (2) au niveau de la chambre (3) de mélange,
    le moyen (16) de division étant de préférence positionné en aval du moyen (13) de vanne.
  14. Appareil selon la revendication 13, caractérisé
    en ce que le moyen (16) de division est positionné au sommet de la chambre (3) de mélange, de sorte que le flux (17) de produit détergent pâteux (2) est dirigé vers le bas lorsqu'il est introduit dans la chambre (3) de mélange,
    la sortie (7) d'alimentation en eau étant de préférence positionnée au niveau de la chambre (3) de mélange à un endroit et dans une orientation faisant que l'eau est introduite dans la chambre (3) de mélange sous la forme d'un flux dirigé vers le flux (17) de produit détergent pâteux (2),
    l'eau étant, de façon préférable également, introduite dans la chambre (3) de mélange de telle sorte que le flux (17) de produit détergent pâteux (2) soit dirigé vers une paroi latérale (18) de la chambre (3) de mélange.
  15. Appareil selon l'une quelconque des revendications précédentes relatives à l'appareil, caractérisé
    en ce que la sortie (7) d'alimentation en eau est positionnée au niveau de la chambre (3) de mélange à un endroit et dans une orientation faisant que l'eau est introduite dans la chambre (3) de mélange de telle sorte qu'elle amorce un mouvement tourbillonnant d'eau et de produit détergent pâteux (2) à l'intérieur de la chambre (3) de mélange, et / ou
    en ce que la chambre (3) de mélange présente un contour en forme d'entonnoir, et / ou
    en ce que la chambre (3) de mélange est ouverte à l'atmosphère ambiante.
  16. Appareil selon l'une quelconque des revendications précédentes relatives à l'appareil, caractérisé
    en ce que le moyen (11) de pompage de mélange est une pompe rotative à haut rendement de mélange du produit détergent pâteux (2) dans l'eau, et / ou
    en ce qu'un moyen (13) de vanne est installé en aval du moyen (11) de pompage de mélange, et / ou
    en ce qu'une deuxième alimentation (19) en eau est installée au niveau de la cuve (9) de préparation.
  17. Appareil selon l'une quelconque des revendications précédentes relatives à l'appareil, caractérisé
    en ce qu'un compteur (21 ; 22) d'eau est installé au niveau de l'alimentation (6) en eau et, si elle existe, de la deuxième alimentation (19) en eau, et / ou
    en ce qu'un moyen (23) de brassage est installé au niveau ou à proximité du fond de la cuve (9) de préparation, et / ou
    en ce que la sortie d'un conduit (24) provenant du moyen (11) de pompage de mélange est positionnée dans la cuve (9) de préparation au niveau ou à proximité du fond de la cuve (9) de préparation.
  18. Appareil selon l'une quelconque des revendications précédentes relatives à l'appareil, caractérisé
    en ce que le volume de la solution (10) de charge détergente présente dans la cuve (9) de préparation est mesuré et / ou régulé au moyen d'une jauge (25) de niveau,
    la jauge (25) de niveau mesurant de préférence le niveau de remplissage de la solution (10) de charge détergente présente dans la cuve (9) de préparation ou mesurant au moins un niveau maximal et un niveau minimal de la solution (10) de charge détergente présente dans la cuve (9) de préparation.
  19. Appareil selon l'une quelconque des revendications précédentes relatives à l'appareil, caractérisé
    en ce que le moyen (26) de pesage comporte un certain nombre de cellules (27) de pesée, de préférence trois.
  20. Appareil selon l'une quelconque des revendications précédentes relatives à l'appareil, caractérisé
    en ce qu'un conduit supplémentaire (28) d'alimentation est installé au niveau de la cuve (9) de préparation en vue de l'introduction d'au moins un adjuvant de lavage stable en présence du détergent,
    l'adjuvant ou les adjuvants de lavage étant de préférence introduits dans la cuve (9) de préparation sous forme de liquide ou de solide finement divisé.
  21. Appareil selon l'une quelconque des revendications précédentes relatives à l'appareil, caractérisé
    en ce qu'un moyen de conduit (29), un moyen (30) de pompage et /ou un moyen (31) de vanne supplémentaires sont reliés à la cuve (9) de préparation, assurant une liaison de la cuve (9) de préparation à une cuve de stockage de solution (10) de charge détergente.
EP04700043A 2004-01-02 2004-01-02 Methode et appareil de production d'une solution detergente de reserve a utiliser dans des machines a laver industrielles Expired - Lifetime EP1703964B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2004/000005 WO2005068060A1 (fr) 2004-01-02 2004-01-02 Methode et appareil de production d'une solution detergente de reserve a utiliser dans des machines a laver industrielles

Publications (2)

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

Family

ID=34778241

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Application Number Title Priority Date Filing Date
EP04700043A Expired - Lifetime EP1703964B1 (fr) 2004-01-02 2004-01-02 Methode et appareil de production d'une solution detergente de reserve a utiliser dans des machines a laver industrielles

Country Status (6)

Country Link
EP (1) EP1703964B1 (fr)
AT (1) ATE398486T1 (fr)
DE (1) DE602004014534D1 (fr)
DK (1) DK1703964T3 (fr)
ES (1) ES2308134T3 (fr)
WO (1) WO2005068060A1 (fr)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BRPI0710040B1 (pt) * 2006-03-30 2017-12-26 Diversey, Inc. Chemical product distribution system including chamber linked to chemical product source in powder and method of distribution of liquid and powder chemical product
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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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
WO1999020826A1 (fr) * 1997-10-17 1999-04-29 Henkel-Ecolab Gmbh & Co. Ohg Injecteur avec contenant sous vide
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
DE10159163B4 (de) * 2001-12-01 2005-10-13 Ecolab Inc., St. Paul Einrichtung und Verfahren zum Dosieren pastöser Produkte
DE10159162B4 (de) * 2001-12-01 2009-12-31 Ecolab Inc., St. Paul Einrichtung zum Dosieren eines pastösen Waschmittels

Also Published As

Publication number Publication date
DK1703964T3 (da) 2008-09-15
EP1703964A1 (fr) 2006-09-27
WO2005068060A1 (fr) 2005-07-28
ES2308134T3 (es) 2008-12-01
DE602004014534D1 (de) 2008-07-31
ATE398486T1 (de) 2008-07-15

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