EP1995364A2 - Procédé de traitement humide de pièces de linge - Google Patents

Procédé de traitement humide de pièces de linge Download PDF

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Publication number
EP1995364A2
EP1995364A2 EP08007556A EP08007556A EP1995364A2 EP 1995364 A2 EP1995364 A2 EP 1995364A2 EP 08007556 A EP08007556 A EP 08007556A EP 08007556 A EP08007556 A EP 08007556A EP 1995364 A2 EP1995364 A2 EP 1995364A2
Authority
EP
European Patent Office
Prior art keywords
laundry
liquid
liquor
rinsing
wash
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
EP08007556A
Other languages
German (de)
English (en)
Other versions
EP1995364A3 (fr
EP1995364B1 (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
Publication of EP1995364A2 publication Critical patent/EP1995364A2/fr
Publication of EP1995364A3 publication Critical patent/EP1995364A3/fr
Application granted granted Critical
Publication of EP1995364B1 publication Critical patent/EP1995364B1/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
    • D06F35/00—Washing machines, apparatus, or methods not otherwise provided for
    • D06F35/005—Methods for washing, rinsing or spin-drying
    • D06F35/006—Methods for washing, rinsing or spin-drying for washing or rinsing only
    • 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

Definitions

  • the invention relates to a method for the wet treatment of laundry items according to the preamble of claim 1 or the preamble of claim 7.
  • the wet treatment of laundry takes place in several stages, namely by washing, rinsing and dewatering.
  • the washing is done by a prewash and a subsequent wash.
  • the treatment liquid is exchanged between at least some treatment stages. For rinsing at least mostly fresh water is used.
  • treatment liquid to be used again is not available in sufficient quantity at the right time. Then more fresh water than necessary must be supplied. This causes unnecessary costs.
  • the present invention seeks to provide a method for wet treatment of laundry, which works more economically than conventional methods.
  • a method for achieving this object comprises the measures of claim 1. Characterized in that prior to rinsing the laundry items in the at least one dewatering device at least a majority of the bound in the laundry items Treatment liquid, namely so-called bound liquor, is removed, there is only a small amount of bound liquor in the laundry.
  • the bound liquor is preferably clear wash liquor. This minimizes the amount of final wash liquor bound in the laundry items. So much of the separated bound liquor is available for reuse in the washing process. This reduces the required amount of fresh water. Since the items of laundry have only a minimum of bound treatment liquid before rinsing, only very little treatment liquid needs to be rinsed out of the laundry items (clear wash liquid). Also, the amount of fresh water is reduced for rinsing.
  • the at least one dewatering device or in the same separated from the laundry pieces free fleet and a majority of the bonded fleet is provided by the at least one dewatering device or in the same separated from the laundry pieces free fleet and a majority of the bonded fleet.
  • This temporary storage means that there is always a sufficiently large supply of the treatment liquid to be used again and that the treatment liquid does not have to be returned to the washing device immediately after it has been separated from the washed laundry.
  • the rinsing liquid accumulating in the region of the dewatering device is also temporarily stored.
  • the rinsing liquid is stored separately from the liquid separated from the laundry items prior to rinsing from the washing process, in particular clear-washing liquid. Because usually the clear wash liquid has a higher temperature than the dishwashing liquid, which is relatively cold, warmer clear wash liquid and colder dishwashing liquid are available in the different storage containers.
  • the rinsing liquid is less contaminated as the clear wash liquid, because with the rinsing liquid, a relatively small residual portion of the final wash liquid is rinsed out of the laundry and serves as a rinse liquid fresh water, so that the residual rinse liquid present in the rinse liquid is relatively highly diluted.
  • the separate buffering of the rinsing liquid on the one hand and the clear-wash liquid on the other hand makes it possible to use the clear-wash liquid in any case partly at a different location than the rinsing liquid.
  • the cached clear wash liquid is particularly suitable for reuse in the final wash zone.
  • the washing liquid having a relatively high temperature therefore does not need to be re-heated in the final wash zone or, if necessary, heated up only to a slight extent again for reuse.
  • the amount of the clearwash liquid fed back to the final wash zone corresponds approximately to the amount of prewash liquid separated from the laundry items before the final wash. In this way, the clear wash liquid separated before the clear wash is replaced again by reuse clear wash liquid from the previous washing process.
  • Another method for solving the above-mentioned problem comprises the measures of claim 7.
  • This may also be a preferred development of the method described above.
  • it is provided to at least partially mix the clear washing liquid and rinsing liquid obtained in the dewatering device. It is preferably provided in the different storage tanks cached clear wash liquid on the one hand and rinsing liquid on the other hand, to mix as needed, in particular with regard to the required amount and / or temperature.
  • the entire before the rinsing in the dewatering device of the laundry separated clear wash in particular the largest part of the bound final wash, to supply part of the prewash zone and the other part of the final wash zone of the washing device again.
  • the clear-wash zone is supplied only with warmer clear wash liquid, including most of the bound final wash liquid separated from the laundry items in the drainage means, ie, no rinse liquid. This separation of rinsing liquid and clear washing liquid is possible due to the separate storage of the final washing liquid and the rinsing liquid.
  • the prewashing zone is fed back with a mixture of separately stored rinsing liquid and a part of the final washing liquid not required at the final wash zone, including the bound final wash liquid from the previous washing process.
  • the liquid mixture is given a temperature which is lower than the temperature of the final wash liquid, so that the temperature of the pre-wash zone supplied mixture of final wash and rinse liquid of the previous laundry cost is relatively low, namely does not exceed the maximum allowable temperature.
  • the various treatment liquids from the final wash zone and the rinsing process it is possible to set a temperature which does not lead to any protein spots in the laundry items.
  • the device shown here represents an example of a washing line for the wet treatment of laundry according to the inventive method.
  • the laundry may be any type of laundry, such as bed linen, table linen, clothing, workwear, floor mats or the like.
  • the laundry items are washed, rinsed and dewatered in the apparatus.
  • the apparatus comprises a continuous washing machine 10 and at least one downstream dewatering device.
  • the drainage device is a spin dryer 11 or a laundry centrifuge, it being possible for the drainage device also to be formed from a plurality of spin driers 11 or laundry centrifuges.
  • the drainage device may alternatively be formed by at least one dewatering press.
  • the continuous washing machine 10 has a drum 12 that can be driven in rotation about a preferably horizontal axis of rotation.
  • a plurality of chambers 15 which follow each other in the direction of passage 14 of the items of laundry, not shown, are formed by transverse dividing walls 13.
  • the chambers 15 may be the same size, but also different sizes.
  • the continuous washing machine 10 shown here has four successive chambers 15, wherein a first chamber 15 forms the prewash zone, while the three subsequent chambers 15 form a final wash zone 17.
  • the continuous washing machine 10 has no rinsing chamber.
  • the washing of the items of laundry takes place in the apparatus shown here in the at least one behind the continuous washing machine 10 arranged spin dryer 11 (laundry centrifuge) or alternatively at least one dewatering press.
  • the continuous washing machine 10 allows a bath change in the first chamber 15 of the final wash zone 17, to which the second chamber 15 seen in the passage direction 14 is associated with an outer drum 18, which serves to drain prewash liquid. If appropriate, the prewash liquid can also be discharged at the end of the prewash zone 16, that is, in the chamber 15 to form the prewashing zone 16. Then, this (first) chamber 15 is associated with an outer drum 18. It is also conceivable to associate one or each other chamber 15 of the clear-wash zone 17 with an outer drum, in particular if the continuous-flow washing machine 10 operates on the countercurrent principle.
  • the washer-extractor 11 has a collection tank 19, which may be formed, for example, by the base of the spin dryer 11. Furthermore, two separate storage tanks 20, 21 are provided. Each storage tank 20, 21 is connected via a supply line 22 to the collection tank 19 of the spin dryer 11. The supply line 22 is shut off before each storage tank 20, 21 by a separate valve 23.
  • a drain line 24 leads to the first chamber 15 of the continuous washing machine 10, ie to the single chamber 15 of the prewashing zone 16.
  • the drain line 24 leads to a feed hopper 26 of the continuous washing machine 10. From the feed hopper 26 to get the laundry items in the A second drain line 27 leads from the storage tank 20 to the first chamber 15 of the final wash zone 17, that is to the second chamber 15 of the continuous washing machine 10 shown here.
  • the at least one spin dryer 11 or another dewatering device for example a dewatering press
  • not only the free final wash liquor but also at least a major part of the bound wash liquor is separated from the laundry.
  • a large part of the bound clear wash liquor which is removed from the laundry items before rinsing, it is meant that the laundry items are separated from such a large part of the free liquor that, even after rinsing, from the at least one spin dryer 11 or a laundry press Laundry items are removed before they are dried in a dryer.
  • the items of laundry are therefore dry to dry if, according to the method according to the invention, before rinsing, a large part of the bound liquor, that is to say a large part of the bound final wash liquid, has been removed from the items of laundry by the at least one spin dryer 11 or another dewatering device.
  • the treatment liquid separated from the laundry items by the at least one spin dryer 11 or another dewatering device namely Both clear wash liquor as well as incurred during rinsing rinse liquor, including a majority of the bonded clear wash liquor or rinse liquor, is cached separately in the storage tanks 20, 21.
  • the storage tank 20 is provided for the clear wash liquid separated from the laundry items prior to rinsing by the respective dewatering device, including a majority of the bonded liquor.
  • the rinsing liquid, including the bound liquor is stored separately in the second storage tank 21.
  • the clear wash liquid namely the free liquor and a large part of the bound liquor, is supplied from the storage tank 20 to a part of the clear wash, in the first chamber 15 of the final wash 17 and the other part to the prewash zone 16, preferably in the feed hopper
  • the rinsing liquor ie the entire free rinsing liquid and a large part of the rinsing liquid bound, from the at least one spin dryer 11 or another dewatering device, for example a dewatering press, is used only for swabbing washed laundry items, ie the prewash zone 16, and that according to the invention with the remaining part of the also separated from the laundry items at least one drainage device clear wash liquid.
  • the Fig. 2 shows the consumption of treatment liquid, including fresh water, using the example of cotton laundry.
  • treatment liquid including fresh water
  • prewash liquid namely prewash liquid
  • the prewash liquid is formed from a mixture of the at least one spin dryer 11 originating rinsing liquid and clear wash liquid from the storage tanks 20 and 21. Specifically, the entire rinse liquid, namely 3.1 l per kg of laundry and a portion of the final wash, namely 1.8 l per kilogram of laundry, mixed to form the prewash liquid.
  • the laundry items leave the continuous washing machine 10 via a rear unloading chute 30 viewed in the direction of passage 14. From this, the laundry with the entire clear washing liquor reaches the at least one spin dryer 11 or another drainage device.
  • the free clear wash liquor runs off immediately in the centrifuge and is collected in the collection tank 19 of the spin dryer 11. The laundry items are now thrown into the spin dryer 11 and thereby freed from a large part of the liquor bound in the laundry, namely the bound clear wash liquor.
  • the laundry items only have a residual moisture that is close to that which remains in the laundry items after they have left the spin dryer 11 to be dried in a subsequent dryer, preferably greater by about 0.1 l per kg of laundry .
  • a residual moisture that is close to that which remains in the laundry items after they have left the spin dryer 11 to be dried in a subsequent dryer, preferably greater by about 0.1 l per kg of laundry .
  • the laundry items after removal of most of the bound clear wash liquor in the laundry, only about 0.7 kg of wash liquor per kilogram of laundry is contained.
  • 3.8 l per wash of washing liquor namely free liquor and a large proportion of the liquor liquor bound, have collected in the collecting tank 19, which is then led into the storage tank 20 in its entirety.
  • the spin dryer 11 For subsequent rinsing of the laundry items in the at least one spin dryer 11 or another laundry treatment device, the spin dryer 11 is now supplied with 3 liters of fresh water per kilogram of laundry. Thus, the rinsing of the laundry items takes place in the spin dryer 11. After rinsing, the free rinsing liquid and a large part of the rinsing liquid bound in the laundry items are removed from the laundry items by the at least one spin dryer 11 or another dewatering device. It is removed so much rinse liquid from the laundry items in the spin dryer 11 that only about 0.6 I of rinse liquid per each kilogram of laundry are included.
  • the entire rinsing liquor namely the free rinsing liquid and a large part of the bound rinsing liquid is first combined in the collection tank 19 and from there to the storage tank 21, where the rinse liquor is stored separately from the clear wash liquor, which is located in the storage tank 20.
  • the storage tank so 3.1 kg flushing fluid per kilogram of laundry.
  • the process according to the invention requires only 3 l of fresh water per kilogram of washed laundry for washing a particular laundry item. These 3 l per kilogram of laundry are discharged by discharging 2.4 l prewash water per kilogram of laundry at the beginning of the final wash 17 and the remaining bound rinse liquor in the laundry, which is 0.6 l of water per kilogram of laundry.
  • the rinsing tank 21 contains rinsing liquor, which is colder compared to the clear-wash liquor.
  • the rinse liquor has a temperature of around 29 ° C, while the clear wash liquor has a higher temperature of about 68 ° C. So that the temperature of the prewash liquid in the prewashing zone 16 does not become too high, according to the invention a mixture of wash liquor and rinse liquor from the dewatering takes place to form the prewash liquid, which is conducted from the two collection tanks 20, 21 in front of the prewashing zone 16.
  • the entire rinsing liquor of 3.1 l of rinsing liquid per kilogram for the purpose of flooding a new item of laundry is conducted in front of the pre-washing zone 16, together with part of the clearing liquor contained in the collecting tank 20.
  • the entire rinsing liquor of 3.1 l of rinsing liquid per kilogram for the purpose of flooding a new item of laundry is conducted in front of the pre-washing zone 16, together with part of the clearing liquor contained in the collecting tank 20.
  • about 1.8 l wash liquor per kilogram laundry about 1.8 l wash liquor per kilogram laundry.
  • the Fig. 3 shows the treatment, namely the washing, rinsing and draining terry.
  • the procedure is the same as previously described in connection with cotton washing. Only the quantities of liquid change because of the larger amount of bound liquor in terrycloth linen.
  • prewash liquid per kilogram of laundry is drained from the second drum 12 seen in the direction of passage 14, with the aid of the outer drum 18 of the second chamber 15. From the collection tank 20 of the final wash liquor At the beginning of the clear-wash zone 17 21 clear-wash liquor is added per kilogram of laundry so that 5.5 kg of clear-wash liquid per kilogram of terry toweling is available for clear-washing.
  • the spin dryer 11 4.7 l of wash stock per kg of laundry are separated and rinsed to the storage tank 20 before rinsing the items of laundry.
  • the clear wash liquor in the storage tank 20 is composed of the clear wash liquor and a large part of the bound wash liquor.
  • the bound Klarwaschflotte is of the Dryer 11 removed from the terry toweling to such an extent that only a relatively small amount of bonded final wash liquor of 0.8 l per kg of laundry remains for rinsing in the terry toweling.
  • the rinsing liquid namely the free rinsing liquid and a large part of the bound rinsing liquid is fed to the separate storage tank 21 for the rinsing liquor.
  • This rinsing liquor is 4.1 l per kilogram of terrycloth washing, namely the 4 l per kilogram of fresh water and 0.1 l per kilogram of tethered liquor which has been pressed out more from the terrycloth washing after the rinsing process than before the rinsing process.
  • the rinsing liquor in the storage tank 21 has in the illustrated embodiment about 27 ° C, while the clear wash liquor in the storage tank 20 has a temperature of about 68 ° C.
  • a mixture of 2.7 l of final wash liquor per kilogram of laundry and 4.1 l of rinse liquor is transported from the storage tank 21 in front of the first chamber 15 of the continuous washing machine 10 from the storage tank 20. It is the total rinsing liquor from the storage tank 21. So there are a total of 6.8 I washcloth and rinse liquor per kilogram of laundry from the storage tanks 20 and 21 of the pre-wash zone 16, respectively.
  • the Fig. 4 shows the inventive method using the example of workwear.
  • the prewash liquid has a temperature of about 38 ° C.
  • the entire prewash liquid is removed from the storage tanks 20 and 21 for a clearwashing liquor on the one hand and rinsing liquor on the other hand. These are the entire rinsing liquor in the storage tank 21, namely 3.1 l per kg of laundry and a temperature of about 26 ° C and a portion of the clear wash liquor from the storage tank 20, namely 1.5 l per Kilogram of professional laundry.
  • the clear wash liquor in the storage tank 20 has a temperature of about 70 ° C.
  • the prewash zone 16 is supplied with about 4.6 I per kilogram of workwear, namely a mixture of clear wash liquor and wash liquor, whereby the warmer clear wash liquor is lowered to a temperature of about 38.degree.
  • the prewash liquid at the beginning of the final wash zone 17 is discharged through the outer drum 18. These are in the illustrated embodiment, 2.6 l prewash liquid per kilogram of professional laundry.
  • the first chamber 15 of the final wash zone 17 is supplied with about 2 l of a final wash liquor per kilogram of workwear. There are so for clear washing in the final wash zone 17 about 4 kg of liquid per kilogram of workwear available.
  • the continuous washing machine 10 After rinsing leave the laundry with the bound and unbound clear wash through the discharge chute 30, the continuous washing machine 10.
  • the laundry with the free and bound clear wash arrives so in the field of spin dryer 11.
  • the entire clear wash liquid directed into the collection tank 19.
  • the spin dryer 11 the laundry is also so much thrown that a large part of the bound clear wash liquid is removed. It then takes a total of 3.5 1 clear wash liquid per kilogram of professional laundry in the collection tank 19 of the spin dryer 11. From here, the entire separated in the spin dryer 11 clear wash liquor of 3.5 I per kilogram of professional laundry is directed into the designated storage tank 20 and cached here ,
  • the workwear then has only a small proportion of bound clearwashing liquor before spinning, about 0.5 l per kilogram of professional laundry.
  • the spin dryer 10 is supplied about 3I fresh water per kilogram of workwear.
  • the rinsing liquor obtained during rinsing namely the total amount of fresh water supplied and also 0.1 l of rinsing water per kilogram of workwear from the bonded liquor, ie a total of 3.1 l per kilogram of workwear to wash liquor, are stored separately in a separate storage tank 21 from the final wash liquid. There are then in the storage tank 20 about 3.5 1 per kilogram of workwear clear wash liquor at a temperature of about 70 ° C and in the second storage tank 21 3.1 1 per kilogram of workwear rinse liquor with a temperature of about 27 ° C available. The entire rinsing liquor from the storage tank 21 is for the Prewash of the subsequent laundry costs used.
  • the warmer clear wash liquor is cooled from 67 ° C to about 38 ° C, a temperature that can be used for prewashing without the risk of the formation of protein stains.
  • the remaining clear wash liquor from the storage tank 20, namely 2 liters per kilogram of laundry, is used at the beginning of the final wash zone 17.
  • the inventive method makes it possible to get by per wash cycle with a fresh water requirement of 3 I per kilogram of workwear. These replace the 2, -6 1 pre-wash liquid per kilogram of workwear removed per wash and the tied liquor discharged from the rinsed work clothing of 0.4 l rinse water per kilogram of workwear.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
EP08007556.7A 2007-05-21 2008-04-18 Procédé de traitement humide de pièces de linge Active EP1995364B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007023801A DE102007023801A1 (de) 2007-05-21 2007-05-21 Verfahren zur Nassbehandlung von Wäschestücken

Publications (3)

Publication Number Publication Date
EP1995364A2 true EP1995364A2 (fr) 2008-11-26
EP1995364A3 EP1995364A3 (fr) 2012-01-25
EP1995364B1 EP1995364B1 (fr) 2019-03-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP08007556.7A Active EP1995364B1 (fr) 2007-05-21 2008-04-18 Procédé de traitement humide de pièces de linge

Country Status (3)

Country Link
US (2) US8225445B2 (fr)
EP (1) EP1995364B1 (fr)
DE (1) DE102007023801A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104131441A (zh) * 2014-06-24 2014-11-05 上海百强洗涤设备制造有限公司 一种隧道式洗涤龙的布草洗涤工艺
EP3216907A1 (fr) * 2016-03-09 2017-09-13 Herbert Kannegiesser GmbH Procédé de traitement par voie humide de linge

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US9127389B2 (en) * 2009-04-22 2015-09-08 Pellerin Milnor Corporation Continuous batch tunnel washer and method
DE102011017345A1 (de) * 2011-03-22 2012-09-27 Herbert Kannegiesser Gmbh Verfahren zum Behandeln von Wäsche und Waschstraße
US10094066B2 (en) * 2014-01-17 2018-10-09 Colorzen Llc Method and apparatus for pre-treatment of non continuous textiles

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DE102005063330A1 (de) * 2005-02-11 2006-11-16 Herbert Kannegiesser Gmbh Verfahren und Vorrichtung zur Nassbehandlung von Wäschestücken

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Publication number Priority date Publication date Assignee Title
US3841116A (en) * 1972-12-08 1974-10-15 Century Niagara Corp Multiple automatic washer system
EP0284554A1 (fr) * 1987-03-27 1988-09-28 Maschinenfabrik Ad. Schulthess & Co.AG. Procédé de lavage et machine à laver de type "tunnel"
DE102005063330A1 (de) * 2005-02-11 2006-11-16 Herbert Kannegiesser Gmbh Verfahren und Vorrichtung zur Nassbehandlung von Wäschestücken

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104131441A (zh) * 2014-06-24 2014-11-05 上海百强洗涤设备制造有限公司 一种隧道式洗涤龙的布草洗涤工艺
CN104131441B (zh) * 2014-06-24 2017-02-15 上海百强洗涤设备制造有限公司 一种隧道式洗涤龙的布草洗涤工艺
EP3216907A1 (fr) * 2016-03-09 2017-09-13 Herbert Kannegiesser GmbH Procédé de traitement par voie humide de linge

Also Published As

Publication number Publication date
US8225445B2 (en) 2012-07-24
EP1995364A3 (fr) 2012-01-25
DE102007023801A1 (de) 2008-11-27
US20080289119A1 (en) 2008-11-27
US20120260434A1 (en) 2012-10-18
EP1995364B1 (fr) 2019-03-13

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