EP1983087A2 - Procédé et dispositif destinés au traitement humide de pièces de linge - Google Patents

Procédé et dispositif destinés au traitement humide de pièces de linge Download PDF

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Publication number
EP1983087A2
EP1983087A2 EP08007286A EP08007286A EP1983087A2 EP 1983087 A2 EP1983087 A2 EP 1983087A2 EP 08007286 A EP08007286 A EP 08007286A EP 08007286 A EP08007286 A EP 08007286A EP 1983087 A2 EP1983087 A2 EP 1983087A2
Authority
EP
European Patent Office
Prior art keywords
washing
treatment liquid
laundry
active substances
active substance
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.)
Granted
Application number
EP08007286A
Other languages
German (de)
English (en)
Other versions
EP1983087A3 (fr
EP1983087B1 (fr
Inventor
Wilhelm Bringewatt
Engelbert Heinz
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.)
Herbert Kannegiesser GmbH and Co
Original Assignee
Herbert Kannegiesser GmbH and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Herbert Kannegiesser GmbH and Co filed Critical Herbert Kannegiesser GmbH and Co
Priority to EP10007887A priority Critical patent/EP2246468A1/fr
Priority to PL08007286T priority patent/PL1983087T3/pl
Publication of EP1983087A2 publication Critical patent/EP1983087A2/fr
Publication of EP1983087A3 publication Critical patent/EP1983087A3/fr
Application granted granted Critical
Publication of EP1983087B1 publication Critical patent/EP1983087B1/fr
Active legal-status Critical Current
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
    • D06F31/00—Washing installations comprising an assembly of several washing machines or washing units, e.g. continuous flow assemblies
    • D06F31/005—Washing installations comprising an assembly of several washing machines or washing units, e.g. continuous flow assemblies consisting of one or more rotating drums through which the laundry passes in a continuous flow
    • 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
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/46—Control of the energy or water consumption
    • 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
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • D06F34/22—Condition of the washing liquid, e.g. turbidity
    • 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
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/20—Washing liquid condition, e.g. turbidity
    • D06F2103/22—Content of detergent or additives
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/02—Water supply
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/06—Recirculation of washing liquids, e.g. by pumps or diverting valves
    • 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
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/52—Changing sequence of operational steps; Carrying out additional operational steps; Modifying operational steps, e.g. by extending duration of steps

Definitions

  • the invention relates to methods for wet treatment of laundry according to the preamble of claims 1 and 9. Furthermore, the invention relates to devices for wet treatment of laundry according to the preamble of claims 12 and 13th
  • treating liquid containing washing-active substances.
  • the treatment liquid which is not bound in the laundry, the so-called free liquor, separated from the laundry.
  • the treatment liquid then contains spent washing-active substances which have absorbed the dirt from the laundry items, but also unused washing-active substances.
  • the present invention seeks to provide methods and apparatus for wet treatment of laundry, which have over conventional methods and devices greater economy.
  • a method for achieving this object comprises the measures of claim 1. Accordingly, spent washing-active substances are removed from the treatment liquid separated from the laundry. The spent washing-active substances bind the dirt that the treatment liquid has taken from the previous washing process. By removing the used washing-active substances, the dirt is thus at least for the most part removed from the treatment liquid. The treatment liquid with the remaining unused washing-active substances can then be reused for a subsequent washing process. As a result, unused washing-active substances are not lost and they also need not be neutralized for draining the treatment liquid into the sewage network. Above all, due to the method according to the invention, the fresh water consumption can be reduced, because the treatment liquid with the unused washing-active substances can be used again for washing the laundry items.
  • it is provided to remove spent wash-active substances from the treatment liquid separated from the laundry after washing and also from the treatment liquid separated from the dehydrator before rinsing.
  • This two-stage removal of the spent wash-active substances from the treatment liquid optimally provides spent washing-active substances with essentially only existing unused washing-active substances therein for a subsequent washing operation, in particular for a washing operation with a separate pre-wash and clear wash , Of the Fresh water requirement is thereby only a fraction of the treatment liquid required for the subsequent washing process, wherein, if necessary, only the actually used washing-active substances are to be replaced.
  • the spent wash-active substances are separated from the treatment liquid by filtration, preferably precision filtration. Since spent washing-active substances have a particle size that exceeds the particle size of unused washing-active substances due to the dirt pick-up, a separation between the unused and used washing-active substances can be carried out by filtration. Because the particle sizes differ only slightly, above all only in the micrometer range, precision filtration is particularly suitable for effectively removing at least a majority of the spent washing-active substances from the treatment liquid.
  • An advantageous development of the method provides for a prefiltration to be carried out before filtering out used washing-active substances from the treatment liquid.
  • This prefiltration eliminates large particles of dirt which, when subsequently filtering out used washing-active substances, in particular by means of precision filtration, can no longer have a disturbing effect by loading or even adding to the sensitive filters for precision filtration.
  • a particularly effective and reliable filtration of at least a majority of the smaller spent washing-active substances is possible.
  • the removal of spent washing-active substances from the treatment liquid is expediently carried out by micro- and / or ultrafiltration.
  • specifically used wash-active substances can be removed from the treatment liquid.
  • These are preferably particles with a size between 10 .mu.m and 0.005 .mu.m, preferably 1 .mu.m to 0.5 .mu.m. This is the typical particle size of spent washing-active substances, so that in this way at least a large part of the used washing-active substances is removed, but not the smaller unused washing-active substances.
  • Another method for the solution of the above-mentioned object comprises the measures of claim 9. Accordingly, it is provided, after the removal of spent washing-active substances from the treatment liquid to the content of the still contained in the same used washing-active substances determine. This can be done, for example, by a so-called bubble tensiometer, for example an H 2 O 2 sensor or a Cl_ sensor. Other measuring methods or sensors suitable for the particle size of unused washing-active substances are also possible.
  • a further embodiment of the method provides for comparing the measured content of the unused washing-active substances still present in the treatment liquid with a desired content of washing-active substances in the treatment liquid. If it is determined that the measured content of the unused washing-active substances still contained in the treatment liquid is below the desired content, fresh washing-active substances are added to the treatment liquid in a targeted manner. This replenishment takes place to such an extent that the treatment liquid again has a content of unused washing-active substances which corresponds to the nominal content of unused washing-active substances in the treatment liquid or is slightly higher, preferably in a specifically selected excess spectrum.
  • a rotating drum drivable having a washing machine, in particular continuous washing machine, and a drainage device, such as a dewatering press or a spin dryer, having apparatus for solving the above-mentioned problem has the features of claim 12. Accordingly, provision is made for each of a drain line for the treatment liquid fed back to the drum from the drum and to the drum for the discharge of the treatment liquid from the drainage device to be assigned a filter for removing spent washing-active substances from the treatment liquid. It is thus wherever there is not found in the laundry items used treatment liquid with both fresh and spent washing-active substances to filter out the used washing-active substances. As a result, both the treatment liquid discharged in the washing machine and the treatment liquid obtained in the region of the dewatering press are prepared for reuse.
  • the invention is thus particularly suitable for devices for washing, rinsing and dewatering of laundry items, wherein the rinsing takes place in the dewatering device.
  • At least one return line leading back to the beginning of the drum of treatment liquid from the drum is associated with a filter for removing spent washing-active substances from the treatment liquid. It can thus be the entire treatment liquid, which is obtained during the washing of the laundry items, freed of washed laundry substances before rinsing the laundry items.
  • treatment liquid is applied after prewashing and clear washing.
  • the spent washing-active substances are then removed from these separately obtained treatment liquids before the treatment liquid is used again for washing.
  • the treatment liquids which are at least largely freed of spent washing-active substances can be supplied to the laundry items before the pre-wash and / or before the final wash as required.
  • the higher-temperature treatment liquid from the previous clear-wash may be recycled after separating spent wash-active substances, while the treatment liquid from the pre-wash is returned to the pre-wash.
  • the respective treatment liquids no significant energy needs to be supplied in order to use them again.
  • the colder treatment liquid from the pre-wash need not be heated to be supplied to the clear wash.
  • filters are used for separating spent washing-active substances from the treatment liquid, which are designed as micro and / or ultrafilters.
  • filters are mainly membrane filter into consideration.
  • These membrane filters are preferably provided with support bodies, which may be ceramic support body.
  • the filters can be designed as so-called cross-flow filters or as dead-end filters.
  • the devices shown here form a washing line for the wet treatment of laundry items.
  • the wet treatment is washing, rinsing and dewatering.
  • garments are all commonly used to washing textile articles into consideration, in particular clothing, including workwear, table linen, bed linen, floor mats, entrance mats and the like.
  • the devices shown in the figures comprise a continuous washing machine and a drainage device.
  • the dewatering device may be a centrifuge or a dewatering press shown in the figures.
  • the continuous washing machine 10 of the Fig. 1 has a about a preferably horizontal axis of rotation 12 rotatably drivable, cylindrical drum 13.
  • the drum 13 are formed by transverse partitions 14 more in the direction of passage 15 of the laundry items not shown by the drum 13 consecutive chambers 16.
  • the continuous washing machine 10 of the embodiment of Fig. 1 are essentially three treatment zones, namely a prewash zone 17, a subsequent final wash zone 18 and finally a rinse zone 19 arranged at the end of the drum 13.
  • Both the pre-wash zone 17 and the final wash zone 18 have two successive chambers 16.
  • the rinse zone 19 only a single chamber 16.
  • the continuous washing machine 10 has five chambers 16.
  • the invention is, however, not limited thereto. Rather, the number of chambers 16 may differ from the embodiment shown. Above all, the prewash zone 17, the final wash zone 18 and the rinse zone 19 can have a larger or smaller number of chambers than in the Fig. 1 have shown.
  • the continuous washing machine 10 is the dewatering press 16, seen in the direction of passage 15, downstream.
  • the washed and rinsed laundry items reach the dewatering press 11 from the continuous washing machine 10 via an unloading chute 20 arranged at the end thereof.
  • the dewatering press 11 is designed in a manner known in principle.
  • the dewatering press 11 has a top and bottom open press housing, preferably a cylindrical press cage 21 with a liquid-impermeable, cylindrical lateral surface and a press ram 22 which can be moved up and down in the press basket 21 and which is in the Fig. 1 only hinted (dashed) is shown.
  • the press ram 22 can be raised so far by a hydraulic cylinder that it is located above the press basket 21, in particular for loading the dewatering press 11, thereby completely releasing an upper opening of the press basket 21.
  • the press ram 22 can be pressed into the press basket 21, wherein the press ram 22 is sealed in a substantially liquid-tight manner inside the jacket surface of the press basket 21.
  • a collection tank 23 or other means for collecting the pressed out of the laundry treatment liquid is a collection tank 23 or other means for collecting the pressed out of the laundry treatment liquid.
  • a drain line 24 branches off.
  • the drain line 24 leads to a prefilter 25 and from there to a filter 26 for separating spent washing-active substances from the discharged through the drain line 24 from the prewashing zone 17 treatment liquid.
  • the drain line 24 opens into a branch point 27. From the branch point 27 performs a return line 28 to the beginning of the continuous washing machine 10, namely in the embodiment shown to an inlet funnel 29, with which the laundry items to be washed drum 13 can be fed.
  • a further drain line 30 is arranged, which in turn leads to a prefilter 31 and then to a filter 32 for separating spent wash-active substances from the treatment liquid.
  • the drain line 30 continues to a branch 33.
  • the branch point 27 can be fed from a branch line 34, from where the from the final wash zone 18th incoming, filtered treatment liquid via the return line 28 to the inlet funnel 29 in front of the drum 13 of the continuous washing machine 10 can be fed.
  • a second line namely a return line 35
  • This return line 35 leads via a further branch point 36 to the return line 37, from which the filtered treatment liquid without spent washing-active substances, but still with a residue of unused washing-active substances to the beginning of the final wash zone 18 is traceable.
  • the rinse zone 19 has an overflow 38 which leads to a collection tank 39. From the collection tank 39 branches off an intermediate line 40, which leads to the branch point 36 in the return line 37.
  • the return line 41 leads to the branching point 33, from where the treatment liquid from the collecting tank 23 can be fed to the inlet funnel 29 in front of the drum 13.
  • the return line 42 from the collection tank 23 is returned to the rinsing zone 19, so the last chamber 16 of the continuous washing machine 10th
  • the filters 26 and 32 are formed. These may be the same filters which allow a precision filtration of the treatment liquid originating from the prewash zone 17 or the final wash zone 18.
  • This treatment liquid is washing water enriched with washing-active substances, some of which have been consumed by dirt absorption, while a part of excess washing-active substances is still unused even after pre-washing or clear-washing.
  • the filters 26 and 32 separate only used washing-active substances from the treatment liquid, but no smaller particle size unused washing-active substances.
  • the filters 26 and 32 are designed as micro and / or ultrafilters which are suitable for filtering out particles of the size of the spent washing-active substances from the liquid.
  • Such filters 26 and 32 make it possible to filter out of the treatment liquid particles having a size of 0.005 .mu.m to 10 .mu.m, preferably 0.5 .mu.m to 1 .mu.m.
  • the filters 26 and 32 are preferably membrane filters. But there are also other filters into consideration, which are suitable to perform a precision filtration, especially a micro- and / or ultrafiltration, in particular to filter out particles of the aforementioned size ranges from the treatment liquid.
  • the membrane filters are preferably designed as a wound filter and / or provided with support bodies.
  • the support bodies are primarily ceramic support bodies.
  • the filters 26 and 32 can work on the cross-flow principle, but also on the dead-end principle.
  • the items to be washed pass through the inlet funnel 29 into the inlet end of the drum 13 of the continuous washing machine 10.
  • the items of laundry are flooded with filtered treatment liquid from both the pre-wash zone 17, the final wash zone 18 and the dewatering press 11.
  • the treatment liquid is usually water, which has a certain content of washing-active substances, as a rule detergents, surfactants and the like.
  • the particular incurred during washing the laundry debris is bound by the washing-active substances, whereby they increase in size.
  • Such detergent substances are consumed by the dirt binding.
  • the water contains excess washing-active substances to form the treatment liquid, so that after washing the laundry in the treatment liquid, not only spent washing-active substances which have bound dirt are contained, but also unused washing-active substances.
  • the treatment liquid is prefiltered via the drain line 24 initially at the pre-filter 25 at the end of the pre-wash zone 17.
  • particles are removed from the treatment liquid, which are larger than the particles of spent and unused washing-active substances.
  • the treatment liquid in the filter 26 is at least largely freed from spent wash-active substances enriched with dirt from the prewash zone 17. Only used washing-active substances in the filter 26 are separated from the treatment liquid, but no unused washing-active substances. Because the unused washing-active substances have not absorbed any dirt and are therefore smaller than the used washing-active substances, the filter 26 leaves the still unused washing-active substances in the treatment liquid.
  • the larger particles filtered off from the pre-filter 25 and the spent washing-active substances separated from the filter 26 by the treatment liquid are removed at the pre-filter 25 and at the filter 26.
  • the filter 26 leaves only or substantially only unused washing-active substances containing treatment liquid. This is supplied via the branching point 27 and the return line 28 to the inlet funnel 29 in front of the continuous washing machine 10 for the purpose of washing laundry items which are to be washed by the continuous washing machine 10 in the next washing cycle.
  • the treatment liquid is separated from the washed laundry.
  • This treatment liquid passes via the drain line 30 to the pre-filter 31 and then to the filter 32.
  • the filter 32 At the pre-filter 31 as the pre-filter 25 larger particles are filtered out as spent washing-active substances, while the filter 32, in turn, like the filter 26 separates spent washing-active substances from the treatment liquid.
  • This treatment 32 leaving treatment liquid with essentially only fresh laundry substances passes as needed either via the branch point 33, the connecting line 34 and the return line 28 to the inlet funnel 29 in front of the drum 13 or via the return line 35, the branch point 36 and the return line 37th to the beginning of the final wash zone 18.
  • a corresponding valve not shown, and a control associated therewith, essentially only unused washing-active substances-containing treatment liquid is directed to the inlet funnel 29 or to the beginning of the final wash zone 18.
  • the rinse water can be passed through the return line 37 to the beginning of the final wash zone 18 if necessary via the intermediate line 40 and the branching point 36.
  • rinsing liquid pressed out by the dewatering press 11 passes either via the return line 41 to the branching point 33 and from there via the connecting line 34, the branching point 27 and the return line 28 to the inlet funnel 29 in front of the drum 13 or via the return line 42 Rinsing zone 19.
  • the rinsing water from the collecting tank 23 under the dewatering press 11 can be directed either to the inlet hopper 29 or to the rinsing zone 19 as needed by corresponding valves, not shown.
  • the process described makes it possible to recirculate freed treatment liquid from the prewash zone 17 and the final wash zone 18 from spent wash-active substances, in particular spent surfactants, to the inlet funnel 29 in front of the continuous washing machine 10, so that this treatment liquid freed of spent washing-active substances can be used again for washing a washing liquid subsequent item of laundry.
  • unused wash-active substances in the filtered treatment liquid are preferably continuously measured during operation of the device, for example by a bubble tensiometer, a H 2 O 2 sensor, a Cl_- Sensor or the like.
  • the measured concentration of unused washing-active substances is then compared with a Target concentration of washing-active substances in the treatment liquid. If it is found in this comparison that the concentration of the remaining washing-active substances still present in the treatment liquid is below the desired concentration, fresh detergent-active substances are admixed to the treatment liquid, preferably in the area of the return line 28. This admixing of new washing-active substances takes place to such an extent in that the desired concentration of washing-active substances in the recycled treatment liquid is restored or is preferably exceeded within a defined range.
  • unused washing-active substances are not lost in the treatment liquid; they can be consumed almost completely.
  • no treatment liquid with unused washing-active substances is conducted into the drain.
  • residual wash-active substances in the treatment liquid need not be neutralized before being discharged into the drain.
  • the reuse of the still remaining unused washing-active substances containing treatment liquid of the fresh water requirement can be significantly reduced. As a result of the reduction of the fresh water requirement thus made possible by the methods according to the invention and the complete utilization of all fresh washing-active substances, the economy of the washing process is significantly increased.
  • the Fig. 2 shows a device according to a second embodiment of the invention.
  • This apparatus also has a continuous washing machine 45 and a dewatering press 46 or other dewatering device, such as a spin dryer.
  • the continuous washing machine 45 is designed in principle like the continuous washing machine 10. Therefore, the same reference numerals are used for the same parts.
  • the continuous washing machine 45 has in the illustrated embodiment, five in the direction of passage 15 consecutive chambers 16. However, the five chambers 16 in the continuous washing machine 45 only one prewash zone 47 of two chambers 16 and a clear wash zone 48 of three chambers 16. The number of chambers of prewash 47 and the clear-wash zone 48 may, however, deviate from the embodiment shown, namely be both larger and smaller. As a rule, however, the clear-wash zone 48 has a larger number of chambers than the pre-wash zone 47.
  • the continuous washing machine 45 has no rinsing zone.
  • the rinsing therefore does not take place in the continuous washing machine 45.
  • the rinsing in the dewatering device ie in the embodiment shown in the dewatering press 46.
  • This thus has two functions, namely serves to separate a major part of the treatment liquid (clear wash) from the final wash 48 of the continuous washing machine 45 and the subsequent Rinsing the laundry, including the dewatering press 46 via an only hinted in the Fig. 2 shown supply line 49 fresh water can be supplied.
  • the continuous washing machine 45 has, at the end of the prewashing zone 47, a discharge line 50 which leads to a prefilter 51 and from this to a filter 52, which in particular serves for precision filtration.
  • the pre-filter 51 and the filter 52 are formed like the pre-filters 25 and 31 and filters 26 and 32 of the first embodiment and have the same purpose. From the filter 52, the treatment liquid coming from the prewashing zone 17 and freed of spent washing-active substances passes via a branching point 53 to the return line 54, which leads to the inlet funnel 29 in front of the continuous washing machine 45.
  • a discharge line 55 extends to a pre-filter 56 and a subsequent filter 57.
  • the pre-filter 56 and the filter 57 are formed like the pre-filter 51 and the filter 52, namely serve to first coarser particles from the treatment liquid and then remove used washing-active substances.
  • the spent washing active substances at least largely freed from spent washing liquid via a connecting line 58 and a branch point 59 to the branch point 53 and from there via the return line 54 to the inlet hopper 29 of the continuous washing machine 45 reach.
  • From the filter 57 further goes out a drain line 60, which is returned to the beginning of the prewashing zone 17.
  • the prefilters 51 and 56 and the precision filtering filters 52 and 57 have the same function as the prefilters 25 and 31 and filters 26 and 32 in the above with reference to Figs Fig. 1 described method. Accordingly, the pre-filters 51 and 56 serve to separate larger particles from the treatment liquid, before at least for the most part the smaller spent washing-active substances, but not the still smaller unused washing-active substances, are separated from the filters 52 and 57.
  • the prepared from the pre-filter 51 and the filter 52 liquid from the end of the prewashing zone 17 passes through the return line 54 to the inlet hopper 29 before the continuous washing machine 45. This substantially only unused washing-active substances containing treatment liquid is used to leach laundry, in a next Wash cycle to be treated.
  • the washed laundry items reach the dewatering press 46 behind the continuous washing machine 45 or another dewatering device.
  • the treatment liquid from the final wash zone 48 is first separated from the laundry items to the residual moisture.
  • the treatment liquid from the final wash zone 48 which contains used and unconsumed wash-active substances, is collected in the collection tank 23 under the dewatering press 46 and passed from the latter through the discharge line 55 first to the pre-filter 56, prefiltered by this by separating larger particles and then fed to the filter 57 which at least for the most part removes used washing-active substances from the treatment liquid.
  • the treated treatment liquid originating from the prewash zone 47 is filled up by such a proportion, which has been removed from the prewash zone 47 during the prefiltration in the prefilter 51 and in the filter 52 from the treatment liquid.
  • the remaining part of the treatment liquid separated from the laundry items by the dewatering press 46 from the final wash zone 48 in the collection tank 23 is passed behind the filter 57 through the drain line 60 to the beginning of the final wash zone 48.
  • the laundry is rinsed in the dewatering press 46.
  • fresh water is supplied to the dewatering press 46 via the supply line 49, which is pressed by the dewatering press through the laundry items, wherein a rinsing of the laundry takes place.
  • the rinsing liquid pressed out of the laundry items during rinsing is now collected in the collecting tank 23 and conducted via the connecting line 61 without filtration via the branching points 53 and 59 through the return line 54 to the inlet funnel 29 in front of the continuous washing machine 45.
  • At least one further collection tank may be arranged in the discharge line 55, in which treatment liquid from the final wash zone 48 is temporarily stored until it is filtered by the prefilter 56 and the filter 57 and sent for further use.
  • the collection tank 23 can be emptied of the laundry items immediately after the separation of the treatment liquid from the final wash zone 48, so that the collection tank 23 is available for receiving rinsing liquid at short notice.
  • the inventive method is particularly suitable for the device of Fig. 2 in that the continuous washing machine 45 has only one pre-wash zone 47 and one final wash zone 48, but the washing of the laundry items takes place in the dewatering press 46.
  • treatment liquid from the final wash zone 48 and rinse liquid from the dewatering press 46 falls in rapid succession, so that treated treatment liquid containing only unused washing-active substances via the rinse liquid is available at the appropriate time for a washing operation of a following item of laundry items.
  • the fresh water requirement in the device of Fig. 2 reduced to a minimum.
  • no fresh water can be supplied at all, because the liquid discharged from the residual moisture with the completely rinsed and dehydrated items of laundry and at the pre-filters 51 and 56 as well as the filters 52 and 57 with residual material particles and spent washing-active substances separated liquid by the flushing of the laundry items of the dewatering press 46 via the supply line 49 supplied fresh water is used to replenish the discharged or filtered treatment liquid for the treatment of the subsequent item of laundry in the device.
  • the method of the invention which represents an independent invention of measuring the concentration of unused washing-active substances in the treatment liquid during the washing process.
  • this method is used in the same way as in connection with the device of Fig. 1 has been described, after separating the spent washing-active substances from the treatment liquid continuously (in situ) determine the concentration of the spent washing-active substances in the treatment liquid behind the filters 52 and / or 57 and regulated in dependence on a desired concentration of the washing-active substances a corresponding amount Add new washing-active substances to the treatment liquid.
  • the measurement of the concentration of unused laundry-active substances in the washing liquid is carried out by measuring sensors or measuring probes, which are described above in connection with the exemplary embodiment of FIG Fig. 1 have been called.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
  • Detergent Compositions (AREA)
EP08007286.1A 2007-04-20 2008-04-14 Procédé destinés au traitement humide de pièces de linge Active EP1983087B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP10007887A EP2246468A1 (fr) 2007-04-20 2008-04-14 Procédé destiné au traitement humide de pièces de linge
PL08007286T PL1983087T3 (pl) 2007-04-20 2008-04-14 Sposób mokrej obróbki tekstyliów

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007019193A DE102007019193A1 (de) 2007-04-20 2007-04-20 Verfahren und Vorrichtung zur Nassbehandlung von Wäschestücken

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP10007887A Division-Into EP2246468A1 (fr) 2007-04-20 2008-04-14 Procédé destiné au traitement humide de pièces de linge

Publications (3)

Publication Number Publication Date
EP1983087A2 true EP1983087A2 (fr) 2008-10-22
EP1983087A3 EP1983087A3 (fr) 2009-01-14
EP1983087B1 EP1983087B1 (fr) 2016-09-28

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EP10007887A Withdrawn EP2246468A1 (fr) 2007-04-20 2008-04-14 Procédé destiné au traitement humide de pièces de linge
EP08007286.1A Active EP1983087B1 (fr) 2007-04-20 2008-04-14 Procédé destinés au traitement humide de pièces de linge

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EP (2) EP2246468A1 (fr)
DE (1) DE102007019193A1 (fr)
DK (1) DK1983087T3 (fr)
ES (1) ES2606314T3 (fr)
PL (1) PL1983087T3 (fr)

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EP2261414A1 (fr) * 2009-06-12 2010-12-15 Herbert Kannegiesser GmbH Procédé de détermination de substances actives lors du nettoyage dans un liquide de traitement
CN105793482A (zh) * 2013-12-17 2016-07-20 佩莱若林·米尔诺公司 地毯和载有微粒的材料的洗涤装置及方法
EP2552611B1 (fr) * 2010-03-29 2018-05-16 Herbert Kannegiesser GmbH Procédé de traitement d'objets par voie humide, en particulier pour leur nettoyage
EP1995364B1 (fr) * 2007-05-21 2019-03-13 Herbert Kannegiesser GmbH Procédé de traitement humide de pièces de linge
DE102022104426A1 (de) 2022-02-24 2023-08-24 Mewa Textil-Service Ag & Co. Management Ohg Vorrichtung und Verfahren zur Nassbehandlung von Wäsche

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JP6015908B2 (ja) * 2012-07-25 2016-10-26 アークロマ・インテレクチュアル・プロパティ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング 洗濯方法
US10094066B2 (en) * 2014-01-17 2018-10-09 Colorzen Llc Method and apparatus for pre-treatment of non continuous textiles

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EP1632598A2 (fr) * 2004-08-03 2006-03-08 Brandt Industries Procédé de réutilisation d'un liquide de lavage ou de rinçage dans une machine à laver, machine à laver et système de filtration associés
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DE3513940A1 (de) * 1984-05-29 1985-12-05 Inst Kommunalwirtschaft Einrichtung zur behandlung von waeschereiwasser
DE19609994C1 (de) * 1996-03-14 1997-09-18 Henkel Ecolab Gmbh & Co Ohg Verfahren zum Betreiben von im Gegenstrom arbeitenden Waschstraßen und Gegenstromwaschanlagen
DE19709085A1 (de) * 1996-05-15 1997-11-20 Miele & Cie Verfahren zum Waschen und Wäsche unter Verwendung eines Filtrationsverfahrens
DE19630089C1 (de) * 1996-07-26 1997-10-16 Brochier Wasser Und Abwasserte Verfahren zur Aufbereitung von Abwasser mittels Membranfiltration
DE19645664A1 (de) * 1996-11-06 1998-05-07 Henkel Ecolab Gmbh & Co Ohg Pressenwasserrückführung
DE19654619A1 (de) * 1996-12-20 1998-06-25 Hochtemperatur Materialien Und Verfahren und Vorrichtung zum Aufbereiten von Wasch- und Spülwasser zwecks Wiederverwendung
US20030213069A1 (en) * 2002-05-20 2003-11-20 Tortorici Paul Lee System and method of surfactant dosing
EP1632598A2 (fr) * 2004-08-03 2006-03-08 Brandt Industries Procédé de réutilisation d'un liquide de lavage ou de rinçage dans une machine à laver, machine à laver et système de filtration associés
WO2006084548A1 (fr) * 2005-02-11 2006-08-17 Herbert Kannegiesser Gmbh Procede et dispositif pour le traitement par voie humide de pieces de linge

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1995364B1 (fr) * 2007-05-21 2019-03-13 Herbert Kannegiesser GmbH Procédé de traitement humide de pièces de linge
EP2261414A1 (fr) * 2009-06-12 2010-12-15 Herbert Kannegiesser GmbH Procédé de détermination de substances actives lors du nettoyage dans un liquide de traitement
EP2552611B1 (fr) * 2010-03-29 2018-05-16 Herbert Kannegiesser GmbH Procédé de traitement d'objets par voie humide, en particulier pour leur nettoyage
CN105793482A (zh) * 2013-12-17 2016-07-20 佩莱若林·米尔诺公司 地毯和载有微粒的材料的洗涤装置及方法
EP3084064A4 (fr) * 2013-12-17 2016-12-14 Pellerin Corp Milnor Tapis de sol ainsi que procédé et appareil de lavage d'un matériau chargé de particules
DE102022104426A1 (de) 2022-02-24 2023-08-24 Mewa Textil-Service Ag & Co. Management Ohg Vorrichtung und Verfahren zur Nassbehandlung von Wäsche

Also Published As

Publication number Publication date
PL1983087T3 (pl) 2017-04-28
EP1983087A3 (fr) 2009-01-14
EP2246468A1 (fr) 2010-11-03
EP1983087B1 (fr) 2016-09-28
DK1983087T3 (en) 2017-01-23
ES2606314T3 (es) 2017-03-23
US20090100607A1 (en) 2009-04-23
DE102007019193A1 (de) 2008-10-23

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