EP3167107A1 - Lave-linge équipé d'un dispositif de décoloration et d'un réservoir pour particules solides non hydrosolubles - Google Patents

Lave-linge équipé d'un dispositif de décoloration et d'un réservoir pour particules solides non hydrosolubles

Info

Publication number
EP3167107A1
EP3167107A1 EP15735695.7A EP15735695A EP3167107A1 EP 3167107 A1 EP3167107 A1 EP 3167107A1 EP 15735695 A EP15735695 A EP 15735695A EP 3167107 A1 EP3167107 A1 EP 3167107A1
Authority
EP
European Patent Office
Prior art keywords
washing
washing machine
water
wash liquor
insoluble solid
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
EP15735695.7A
Other languages
German (de)
English (en)
Other versions
EP3167107B1 (fr
Inventor
Iwona Spill
Peter Schmiedel
Nicole BODE
Christian Nitsch
Arnd Kessler
Thorsten Bastigkeit
Thomas Müller-Kirschbaum
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.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
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 Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Publication of EP3167107A1 publication Critical patent/EP3167107A1/fr
Application granted granted Critical
Publication of EP3167107B1 publication Critical patent/EP3167107B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • D06F37/00—Details specific to washing machines covered by groups D06F21/00 - D06F25/00
    • D06F37/02—Rotary receptacles, e.g. drums
    • D06F37/04—Rotary receptacles, e.g. drums adapted for rotation or oscillation about a horizontal or inclined axis
    • 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 
    • D06F39/08—Liquid supply or discharge arrangements
    • D06F39/083—Liquid discharge or recirculation arrangements

Definitions

  • the present invention relates to a washing machine with a decolorizing device and a method for washing textile substrates in such a washing machine.
  • Photoactivator and oxygen are subjected and irradiated during this treatment process with visible light.
  • a method is not useful for the treatment of dyed textile substrates, in particular for suppressing the dyeing process, since not only in the wash liquor dissolved dyes are attacked by the treatment, but also the bonded to the textile substrates dyes and the textile substrates characterized in bleach undesirable and lose color.
  • Washing machine provided a water tank.
  • the water contained in the tank is electrolyzed by an electrolysis unit, whereby it accumulates with oxidative radicals, which are highly reactive and thus have, inter alia, a cleaning and disinfecting effect.
  • the thus treated water is then fed to the actual washing process.
  • the disadvantage here is that the textile substrates to be washed come into contact with the electrolyzed water during the washing process. As a result, not only impurities in the textile substrates, but also the dyes bonded to the textile substrates are attacked, which can lead to an undesirable fading of the colors.
  • WO-A-01/71083 discloses a washing machine having a drum for receiving articles to be washed, the drum having at least two rotatable drum sections and a drive, the drum comprising a plurality of different drum modes including a mode in which the rotatable drum parts are driven to effect relative rotation between them.
  • a controller controls the apparatus to execute a plurality of different wash programs, each wash program having an associated drum mode.
  • WO 2010/094959 A1 relates to the cleaning of substrates using a
  • Solvent-free cleaning system that requires the use of only small amounts of water.
  • the book deals with the cleaning of textile fibers with the help of such a system, and provides an apparatus for use in this context.
  • WO-A-2007/128962 enables the efficient separation of the substrate from polymer particles upon completion of the cleaning process and describes a design for using two internal drums.
  • Object of the present invention is therefore the provision of simple and
  • Washing process is minimized in a washing machine while sparing the textile substrates to be washed in the presence of water-insoluble solid particles.
  • a washing machine (1) having a washing chamber (2) for receiving a wash liquor and to be cleaned textile substrates, a reservoir for a plurality of water-insoluble solid particles and a decolorizing device (3) via an inlet (4) for introducing washing liquor from the washing chamber (2) into the decolorizing device (3) and via an outlet (5) for discharging washing liquor from the decolorizing device (3) into the washing chamber (2), and the above
  • at least one activating agent which is suitable for initiating a process for forming free radicals in the washing liquor within the decolorizing device (3).
  • washing machine for example, a rectangular washing machine with a capacity of about 1 to 20 kg, in particular 4 to 9 kg, laundry, but also to act as an industrially applicable washing machine with any capacity. So fall also washing machine types with different construction and significantly greater capacity under the invention.
  • the washing chamber In the washing chamber is that space which is traversed by wash liquor during a wash cycle. In a household washing machine, this is generally a washing drum and the immediately surrounding space.
  • the dyes which have been transferred to the wash liquor during a washing process can be decomposed by free radicals.
  • Free radicals have at least one unpaired electron and are therefore extremely reactive and therefore mostly short-lived (usually ⁇ 1s). They are able to react with the dyes dissolved in the wash liquor and thus to decompose them.
  • the decomposition of the dye Acid Orange 7 is called, which by the interaction with free radicals in colorless aromatic By-products are decomposed, which in turn are converted by oxidation in aliphatic acids.
  • Decolorization in which the enriched with dissolved dyes wash liquor from the wash chamber can be introduced.
  • the activating agent is arranged, which is suitable for initiating a process for the formation of free radicals in the washing liquor within the decolorizing device.
  • the formed free radicals attack the dyes in the wash liquor and decompose them.
  • the wash liquor treated in this way is then removed again from the decolorizing device and introduced into the washing chamber and fed to the further washing process in the washing machine.
  • the proportion of dissolved dyes in the total washing liquor located in the wash chamber is thus significantly reduced and thereby minimizes the risk of textile discoloration.
  • Destaining can be done exclusively the treatment of the wash liquor and / or the water-soluble solid particles; an undesirable influence of the reactive free radicals on the textile substrates in the washing chamber, generally in a washing drum, and the dyes bound in these are not possible or largely excluded.
  • washing chamber are for this purpose such that textile substrates can not get into the decolorization.
  • the inlet and / or the outlet of the decolorizing device can be equipped, for example, with suitable filters or grids, which are passable not for textile substrates, but for the washing liquor and optionally for the water-insoluble solid particles.
  • the dimensions, in particular the cross-sectional area of the inlet and / or the outlet can be dimensioned so that an entry of textile substrates into the decolorizing device is not possible.
  • a control of the inlet and outlet devices may also be provided to control these in time and thus to transport only the desired components in or out.
  • the length of the inlet and in particular of the outlet of the decolorization unit is dimensioned such that, taking into account the average flow rate of the wash liquor through the decolorizing device and the average life of the free radicals, it can be assumed that virtually no in the treated wash liquor upon exiting the decolorizing device free radicals are more present.
  • the wash liquor is generally a wash liquor in which a
  • Detergent is dissolved in water. Depending on the requirements, other components can be added to this wash liquor. In certain applications, pure water or other suitable liquids may be used. Ingredients commercially available
  • the activating agent comprises a UV radiation source, i. the process of forming free radicals in the decolorizer is initiated by UV irradiation.
  • the wash liquor used in this embodiment is a wash liquor which contains additional chemical components such as hydrogen peroxide (H2O2) or titanium dioxide (T1O2).
  • H2O2 hydrogen peroxide
  • T1O2 titanium dioxide
  • the UV radiation emitted by the radiation source in the decolorizing device activates the hydrogen peroxide or titanium dioxide contained in the wash liquor, and as the short-lived products of this reaction, highly reactive hydroxyl radicals (OH radicals) which are capable of forming the dyes in to decompose the wash liquor.
  • the concentration of hydrogen peroxide in the liquid fraction of the wash liquor is preferably 0.1 to 50 mmol / L, more preferably 1 to 20 mmol / L.
  • the liquid content of the wash liquor is understood as the proportion of the entire wash liquor including the
  • water-insoluble solid particles obtained by centrifuging 8 kg of the washing water containing the solid water-insoluble particles for 5 minutes in a centrifuge having a horizontally mounted cylindrical rotating body of 515 mm inner diameter and 370 mm inner depth at 1400 revolutions per minute, the water-insoluble solid particles Minute separates from the liquid portion.
  • UV radiation source a quartz lamp or a UV light emitting diode can be used.
  • other UV radiation sources such as sunlight, gas discharge lamps,
  • UV radiation sources (6) are a quartz lamp, sunlight, LEDs or a UV light emitting diode.
  • a UV radiation source is present as the activating agent
  • that source is placed in the decolorizing device and / or that the decolorizing device is designed such that the washing chamber is not exposed to direct UV radiation, more preferably no UV radiation is used. Radiation is exposed so that dyes in the textile substrates, which may be present in the wash chamber, not damaged. This can e.g. take place by an aperture or curve is present at the entrance and exit in the direction of wash chamber, and the wash liquor must flow around the aperture or around the curve.
  • the inlets and outlets of the decolorizing device may also be arranged in one direction so that they do not face the direction of the washing chamber.
  • the preferred wavelength range of the emitted UV radiation is between 100 and 400 nm, more preferably between 250 and 400 nm.
  • At least one additional pump is provided in addition to the pump usually present in a washing machine which pumps the washing liquor out of the washing chamber into the decolorizing device and / or out of it. This makes the decolorization process even more efficient.
  • the onset, intensity and duration of the process of forming free radicals in the decolorizer are preferably controllable.
  • the onset of the process can be coupled to the achievement of certain operating parameters, for example to a certain temperature of the wash liquor or to a certain phase of the wash cycle.
  • a temperature-dependent control for example, a temperature sensor can be provided, by which the temperature of the wash liquor can be detected.
  • a purely temporal control can be provided, in which the process starts at a pre-settable time.
  • the duration of the process can be adjusted so that it stops as soon as a certain level of dyes within the wash liquor is exceeded. For particularly low temperature washes where there is no fear of washing out dyes in the wash liquor, the onset of the process can be completely eliminated.
  • the intensity and duration of the process can be correspondingly increased.
  • the temperature of the wash liquor at which the washing machine according to the invention can be operated may be between 10 and 100.degree. C., preferably between 20 and 60.degree.
  • the decolorizing device can be permanently installed in a housing of the washing machine according to one embodiment of the invention.
  • the decolorizing device may, for example, be mounted below the drum or on the inside of the door of the washing machine. To feed the wash liquor into the decolorization and again out of this can in the
  • washing machine corresponding lines may be provided, which are connectable to the inlet or the outlet of the decolorizing device.
  • the washing chamber can have a washing liquor outlet, which can be connected to the inlet of the decolorizing device. Accordingly, the outlet of the decolorizing device with a
  • wash liquor inlet of the wash chamber be connectable, so that the treated wash liquor from the decolorizer can be guided back into the wash chamber.
  • the decolorizing device can also be integrated into the usually present circulating circuit.
  • the decolorizing device can also be designed as a separate, preferably battery-operated module. This can be attached for example by means of a corresponding holder on the inside of the door of the washing machine.
  • a separately insertable module is that it can be used only when needed and thus subject to less wear.
  • a separate module can also be installed later in an existing washing machine or from a defective
  • Washing machine to be installed and in a new washing machine.
  • UV radiation also has a germicidal effect in a wavelength range of 200 and 300 nm.
  • microorganisms such as bacteria, viruses and protozoa can be deactivated.
  • This capability makes UV radiation an environmentally friendly, chemical-free and highly effective method Disinfection of water widely used. It is also used to protect the water from harmful microorganisms.
  • UV irradiation relies on a physical process that quickly and effectively deactivates microorganisms. When bacteria, viruses and protozoa are exposed to the germicidal wavelengths of UV radiation, they lose their ability to reproduce and infect.
  • UV radiation has been shown to be highly effective against pathogenic organisms, including the causative agents of cholera, polio, typhoid fever, hepatitis and other bacterial, viral and parasitic diseases. Therefore, according to the invention, the UV radiation (alone or in combination with hydrogen peroxide) is used for the UV oxidation, a process in which the number of
  • Microorganisms on the textile substrates and / or the water-insoluble solid particles and / or in the liquid phase of the wash liquor is significantly reduced.
  • the photocatalytic water splitting is also possible according to the invention by using short-wave UV radiation in the range from 250 to 300 nm when using suitable photocatalysts. These are either added to the detergent or the water-insoluble solid particles, or may be partially or wholly made thereof. It is also possible to introduce these stationary in the decolorization. Thus, in principle can be dispensed with the use of amounts of hydrogen peroxide by the detergent or hydrogen peroxide generating components.
  • the invention thus also discloses a module which can be used in a washing machine and which has a decolorizing device with an inlet for introducing washing liquor into the washing machine
  • Discolouring device and an outlet for the discharge of wash liquor from the
  • Decolorizing device and having at least one activating agent, which is suitable, within the decolorizing device, a process for the formation of free radicals in the
  • An essential feature of the washing machine according to the invention is the presence of the decolorizing device, which is integrated in the above device, the above
  • the washing machine according to the invention typically has a trap door in a housing to allow access to the interior of the washing drum to a substantially
  • the door includes a window of the stationary cylindrical drum, which is rotatably supported in another drum, while the rotatably mounted cylindrical drum is mounted vertically within the housing. Consequently, a front loading device is preferred.
  • the stationary cylindrical drum may be mounted vertically within the housing and the access device located in the top of the device.
  • the washing machine is suitable for providing contact of the particles with the soiled substrate. Ideally, these particles should be efficiently circulated to promote effective purification.
  • the washing machine comprises at least one reservoir, in particular with a corresponding control, for the water-insoluble solid particles, for example located inside the washing machine and suitable for controlling the flow of particles within the washing machine and containing the particles for regeneration.
  • the invention also relates to a method for washing textile substrates in a washing machine using a washing machine as defined above comprising the steps:
  • washing the laundry by contacting the textile substrates with water, a detergent and a plurality of water-insoluble solid particles; Introducing wash liquor from the wash chamber into the decolorizer; Treatment of the wash liquor in the decolorizer using the activator;
  • Figure 1 an embodiment of the decolorizing device according to the invention in
  • FIG. 2 shows a schematic view of a washing machine with the decolorizing device
  • Figure 1 shows an embodiment of a decolorizing device according to the invention generally designated 3, which is suitable to receive wash liquor.
  • the decolorizing device 3 which is suitable to receive wash liquor.
  • Decolorizing device 3 an inlet 4 and an outlet 5 on. Through the inlet 4, not shown wash liquor from the environment of the decolorizing reach into the interior. About the outlet 5, the wash liquor can emerge from the decolorizer 3 again.
  • the flow direction of the wash liquor is indicated schematically by arrows.
  • a UV radiation source 6 is arranged within the decolorizing device 3.
  • the arrangement of the UV radiation source 6 within the decolorization device 3 is shown only schematically in FIG. 1; in particular, the representation of the electrical connections of the UV radiation source 6 has been dispensed with.
  • the UV radiation source 6 may preferably be a UV quartz lamp which emits UV radiation having a wavelength of 254 nm.
  • H2O2 hydrogen peroxide
  • hbCfe molecules are activated by the UV radiation emitted by the quartz lamp and there are short-lived, highly reactive Hydroxyl radicals (OH).
  • wash liquor dissolved dyes and decompose it.
  • the wash liquor decolorized in this way is finally passed out of the decolorizing device 3 through the outlet 5.
  • the term “decolourised wash liquor” means that the dye content of the wash liquor is significantly lower when leaving the decolorizing device 3 than when entering the decolorizing device 3.
  • the absolute degree of decolorization depends on different parameters such as original dye content in the wash liquor, residence time of the wash liquor in the decolorizing device 3, radiation intensity of the UV lamp and others.
  • the washing machine 1 shown in simplified form in FIG. 2 has a drum 13, which is part of a washing chamber 2 and below which a decolorizing device 3 according to FIG. 1 containing a UV quartz lamp is arranged.
  • the washing chamber 2 consists of the washing drum 13 and the immediately surrounding space, which during the
  • Wash passage is flowed through by the wash liquor.
  • Decolorization device 3 is indicated by arrows. It is just as possible that Discolouring device 3 to arrange in the alternative embodiment with electrode assembly 7 in a region below the drum 13.
  • the decolorizing device 3 is an integral part of the washing machine 1 in the example shown.
  • the washing machine 1 having a decolorizing device 3 and the process for washing textile substrates operated therewith, thus constitute measures with the aid of which the risk of discoloration during the washing process in one
  • washing machine can be minimized.
  • the invention is characterized in that a variety of dyes can be decomposed at the same time in a simple manner, without the textile substrates themselves would be affected by the color neutralization process. As a consequence of this reduced risk of discoloration it is possible to dispense with pre-sorting of textile substrates by color before washing, which means a considerable saving of time.
  • Another aspect of the present invention includes a method for cleaning a soiled textile substrate, the method including treating the wet textile substrate with a formulation comprising a plurality of water-insoluble solid particles, wherein the particles optionally after regeneration with or without Use of a detergent in further purification processes according to the method
  • the substrate comprises textile substrates, each optionally of a variety of materials, which may be either a natural fiber such as cotton or synthetic textile fibers such as nylon 6,6 or a polyester.
  • the water-insoluble solid particles may be inorganic and / or organic in nature.
  • solid particles for example, zeolites, clays or ceramics are particularly preferred.
  • the particles may have some hydrophilicity to allow wetting with the wash liquor.
  • the organic water-insoluble solid particles may be any of a variety
  • polystyrene resin such as polyethylene and polypropylene, polyesters and polyurethanes.
  • polymer particles of polyamide more particularly particles of nylon, most preferably in the form of nylon. Crisps.
  • the polyamides are particularly effective for aqueous stain / soil removal, while polyalkenes are particularly useful for removing oily stains.
  • copolymers of the above polymeric materials may be used for the purposes of the invention.
  • nylon 6 Various nylon homo- or co-polymers can be used, including nylon 6 and nylon 6,6.
  • the polyamide comprises nylon 6,6 homopolymer having an average molecular weight in the range of 5,000 to 30,000 daltons, preferably 10,000 to 20,000 daltons, most preferably 15,000 to 16,000 daltons.
  • the average molar masses indicated here and later, if appropriate, for other polymeric constituents are weight-average molar masses M w , which in principle by means of
  • the water-insoluble solid particles or granules, particles or moldings are of such a shape and size that enables good flowability and close contact with the textile substrate.
  • Preferred forms of the particles include spheres and cubes, but the preferred particle shape is cylindrical.
  • the particles are preferably sized to each have an average weight in the range of 20-50 mg, preferably 30-40 mg.
  • the preferred average particle diameter is 1.5 to 6.0 mm, more preferably 2.0 to 5.0 mm, most preferably 2.5 to 4.5 mm, while the length of the cylindrical particles is preferably in the range of 2.0 to 6.0 mm, more preferably 3.0 to 5.0 mm, and most preferably in the range of 4.0 mm.
  • the textile substrate Before cleaning, the textile substrate is preferably moistened by wetting with water to provide an additional improvement for the wash liquor and thereby a
  • the substrate can be wetted by contact with tap water.
  • the wetting treatment is carried out to achieve a substrate to water weight ratio of 1: 0.1 to 1: 5; more preferably the ratio is between 1: 0.2 and 1: 2, with particularly favorable results being achieved in ratios such as 1: 0.2, 1: 1 and 1: 2.
  • successful results with the substrate can be achieved to water ratios of up to 1:50, although such ratios are not preferred in view of the significant amounts of wastewater that are generated.
  • a weight ratio of textile substrate to water-insoluble solid particles in the range from 1: 1 to 1: 30, in particular from 1: 1, 5 to 1: 2.5, especially set by 1: 2.
  • the proportion of water-insoluble solid particles as the weight of the particles in the dry state, ie after 24 hours of storage at 21 ° C and a relative humidity of 65% determined.
  • the regeneration of the water-insoluble solid particles can be carried out in a manner known per se, as described, for example, in WO 2012/035342 A1.
  • the regeneration is carried out by introducing the particles optionally with industrial chemicals and / or the detergent into the decolorizing device, for example in a separate rinse, optionally by adding further
  • Regeneration step is independent of the washing temperature when the textile substrate has been removed from the washing machine before regeneration. Furthermore, the usual detergent raw materials can be used.
  • Another object relates to the use of a detergent containing a precursor of free radicals, in particular H 2 O 2, in a process according to any one of claims 1 1 to 22 for washing textile substrates using a plurality of water-insoluble solid particles.

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

Abstract

La présente invention concerne un lave-linge (1) comportant une chambre de lavage (2) pour recevoir un bain de lavage et des substrats textiles à laver, un dispositif de décoloration (3), dans lequel sont ménagés un orifice d'entrée (4) pour guider le bain de lavage de la chambre de lavage (2) jusque dans le dispositif de décoloration (3), et un orifice d'évacuation (5) pour évacuer le bain de lavage hors du dispositif de décoloration (3), et guider ledit bain dans la chambre de lavage (2), et qui comporte en outre au moins un agent d'activation conçu pour activer un processus de formation de radicaux libres dans le bain de lavage présent dans le dispositif de décoloration (3). Selon l'invention, le lave-linge comporte un réservoir contenant des particules solides non hydrosolubles. La présente invention concerne également un procédé pour laver des substrats textiles dans un tel lave-linge.
EP15735695.7A 2014-07-09 2015-07-08 Lave-linge équipé d'un dispositif de décoloration et d'un réservoir pour particules solides non hydrosolubles Active EP3167107B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102014213313.0A DE102014213313A1 (de) 2014-07-09 2014-07-09 Waschmaschine mit Entfärbungseinrichtung und Reservoir für wasserunlösliche feste Teilchen
PCT/EP2015/065622 WO2016005459A1 (fr) 2014-07-09 2015-07-08 Lave-linge équipé d'un dispositif de décoloration et d'un réservoir pour particules solides non hydrosolubles

Publications (2)

Publication Number Publication Date
EP3167107A1 true EP3167107A1 (fr) 2017-05-17
EP3167107B1 EP3167107B1 (fr) 2023-04-26

Family

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EP15735695.7A Active EP3167107B1 (fr) 2014-07-09 2015-07-08 Lave-linge équipé d'un dispositif de décoloration et d'un réservoir pour particules solides non hydrosolubles

Country Status (4)

Country Link
US (1) US20170114489A1 (fr)
EP (1) EP3167107B1 (fr)
DE (1) DE102014213313A1 (fr)
WO (1) WO2016005459A1 (fr)

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ES2890731T3 (es) * 2016-05-24 2022-01-21 Mimbly Ab Sistema de lavado que comprende un cuerpo de desinfección de agua

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WO2016005459A1 (fr) 2016-01-14
EP3167107B1 (fr) 2023-04-26
US20170114489A1 (en) 2017-04-27
DE102014213313A1 (de) 2016-01-14

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