DE102009027934A1 - Process for finishing textiles in a household washing machine and control device and household washing machine - Google Patents

Abstract

The invention relates to a method for refining textiles by means of a chemical in a household washing machine 1 with a laundry drum 2, in which the textiles are accommodated, comprising the steps: (i) picking the textiles into the laundry drum 2; (ii) providing an aqueous solution 5 of the chemical; (iii) generating a foam 6 from the aqueous solution 5 of the chemical and introducing the foam 6 into the laundry drum 2; (iv) moving the textiles in the foam (6) by rotating the laundry drum (2) and wetting the textiles with the foam 6. The invention also relates to a control device 4 for a corresponding household washing machine 1 and a corresponding household washing machine 1 itself.

Description

The The invention relates to a method for refining textiles in one Household washing machine, a correspondingly established control device for a household washing machine and a corresponding Household washing machine itself.

So far It is common practice in a kind of batch process in the household washing machine to refine or equip, in particular to impregnate, to bleach or dye. Here are the to be refined Textiles in an aqueous solution for finishing chemical to be used in the manner of a conventional washing process treated, then drained by spin and then dried. This method is similar to a pull-out method, which is used for industrial finishing or finishing of textiles is used. In the exhaust process, an aqueous Solution generated from the chemical to be applied, and in one discontinuous batch process, the textiles are in this Solution dipped, then dewatered by pressing or spinning and then dried. In such a process 50% extraction rate is achievable, meaning that 50% of the in the solution provided chemical in the textiles and thus was removed from the solution. For a complete wetting of the textiles is a high Fleet ratio, d. H. a large mass of liquid ever treated textile, required. The mass of liquid is significantly higher than twice the textile quantity (For example, more than 15 kg of fluid corresponding to 15 l at 6 kg of textiles). The remaining solution, with a residual content on the chemical of about 50% of the amount used, can subsequently refreshed by replacing the used water and the chemical and continue to be used. It is necessary, however, by a corresponding analysis to measure the consumption of chemical and to determine the necessary supplementary quantity. Furthermore storage of the solution should be provided for.

at However, a household washing machine is the excess Solution (about 10 to 12 l for 6 kg of textiles) with the therein still contained chemical disposed of as wastewater. To use a expensive or environmentally sensitive chemical this method is therefore unacceptable.

The Fullert process is a further development of the exhaust process to a continuous process mainly for fabric panels. The fabric is thereby to their refinement by a basin with the solution is drawn from appropriate chemicals. Subsequently The fabric is guided between rollers to the excess Squeeze solution and return to the pelvis. Thereafter, the fabric is dried in a tunnel oven. By a continuous replacement of the spent solution (connected with a continuous measurement of their chemical composition) the dipping bath constantly supplements. In this process are due to the favorable liquor ratio exhaustion of up to 90% achievable. There are for this procedure but no possible replica in a household washing machine.

The Spraying is also a continuous process for the finishing of fabric panels. The panels are by a Spray device out in which the applicable Chemical in high concentration evenly sprayed onto the fabric surface. Subsequently the fabric is also dried in a tunnel kiln. The necessary even wetting with the chemical will made possible by a flat guidance of the fabric. Again, Ausziehgrade be achieved by 90%. A replica This procedure in a household washing machine is currently not known. One problem is the technical equipment Equipment for spraying the chemical and uniform wetting at non-flatter Presentation of the textiles to be refined.

From the DE 24 02 342 A1 is a method for dyeing and / or equipping a Guts textile fabrics of synthetic or natural fiber materials or mixtures of such fibers among themselves known, in which a liquor containing a dye and / or a finishing agent, needed for its fixation other chemicals and surface-active substances is foamed with the aid of a gaseous propellant and is applied in the form of a layer of foam and at room temperature to the material. Optionally, after disintegration or destruction of the foam in the layer, the thus-treated material for fixing the dye and / or finishing agent is subjected to a wet development treatment. In the process, the foamed liquor is pressed or sucked after its application to the estate and before disintegration or destruction of the foam by means of pressure or negative pressure in the good. This obviates the difficulties of continuous dyeing of fabric resulting from uneven squeezing and dye migration. However, this method is intended and suitable only for the industrial finishing of textiles.

The object of the invention is therefore to provide a method for refining textiles in a household washing machine, which achieves a high degree of exhaustion. Also to be provided is a corresponding control device for a household washing machine and a entspre home washing machine itself.

According to the invention This object is achieved by a method, a control device and a household washing machine according to respective ones independent claim. Preferred developments of the method are in dependent claims defined, with these preferred developments also preferred Developments of the control device and the household washing machine correspond, and even then, if not explicitly indicated herein is.

• (i) Aufnehmen der Textilien in die Wäschetrommel;
• (ii) Bereitstellen einer wässrigen Lösung der Chemikalie;
• (iii) Erzeugen eines Schaums aus der wässrigen Lösung der Chemikalie, und Einbringen des Schaums in die Wäschetrommel;
• (iv) Bewegen der Textilien in dem Schaum durch Drehen der Wäschetrommel, und Benetzen der Textilien mit dem Schaum.

The inventive method for refining textiles by means of a chemical in a household washing machine with a laundry drum, in which the textiles are receivable, therefore comprises the steps:

• (i) picking the textiles into the laundry drum;
• (ii) providing an aqueous solution of the chemical;
• (iii) generating a foam from the aqueous solution of the chemical, and introducing the foam into the laundry drum;
• (iv) moving the fabrics in the foam by rotating the laundry drum and wetting the fabrics with the foam.

• (i) Aufnehmen der Textilien in die Wäschetrommel;
• (ii) Bereitstellen einer wässrigen Lösung der Chemikalie;
• (iii) Erzeugen eines Schaums aus der wässrigen Lösung der Chemikalie, und Einbringen des Schaums in die Wäschetrommel; und
• (iv) Bewegen der Textilien in dem Schaum durch Drehen der Wäschetrommel, und Benetzen der Textilien mit dem Schaum.

The control device for a domestic washing machine according to the invention is thus adapted to carry out a method of finishing textiles by means of a chemical in the household washing machine with a laundry drum in which the textiles can be received, the method comprising the steps:

• (i) picking the textiles into the laundry drum;
• (ii) providing an aqueous solution of the chemical;
• (iii) generating a foam from the aqueous solution of the chemical, and introducing the foam into the laundry drum; and
• (iv) moving the fabrics in the foam by rotating the laundry drum and wetting the fabrics with the foam.

• (i) Aufnehmen der Textilien in die Wäschetrommel;
• (ii) Bereitstellen einer wässrigen Lösung der Chemikalie;
• (iii) Erzeugen eines Schaums aus der wässrigen Lösung der Chemikalie, und Einbringen des Schaums in die Wäschetrommel; und
• (iv) Bewegen der Textilien in dem Schaum durch Drehen der Wäschetrommel, und Benetzen der Textilien mit dem Schaum.

The household washing machine according to the invention accordingly comprises a control device which is adapted to carry out a method for refining textiles by means of a chemical in the domestic washing machine, and a laundry drum in which the textiles can be received, the method comprising the steps:

• (i) picking the textiles into the laundry drum;
• (ii) providing an aqueous solution of the chemical;
• (iii) generating a foam from the aqueous solution of the chemical, and introducing the foam into the laundry drum; and
• (iv) moving the fabrics in the foam by rotating the laundry drum and wetting the fabrics with the foam.

In the household washing machine becomes the chemical to be used for refining first brought into aqueous solution and this aqueous Solution then foamed. Thereby the volume of this solution is greatly increased. Then we put this foam in the laundry drum and the textiles are moved in this foam and so a uniform wetting of the textiles allows. This is the used for refining chemical so foamed that the resulting foam is in the laundry drum the household washing machine arrives and there by turning the Laundry drum wetted textiles wetted.

The Invention thus provides a method for refining textiles in a household washing machine, which is a particularly high utilization allows the particular chemical used. With the help of The method according to the invention can be particularly the degree of exhaustion of the liquor used for refining in a household washing machine increase. By the invention Method can be the amount needed to refine a given amount of textile to be applied chemical at the same Effect can be significantly reduced. This can also be more expensive Find chemicals in the household application. At the same time reduced the resulting wastewater quantity. Thus, they are suitable for use of the invention Household washing machines not only for cleaning Textiles, but now also without restrictions to Applying chemicals for finishing on textiles.

To the Among other things, finishing chemicals can be used Impregnating agents, dyes, optical brighteners, finishing agents, Fixing aids or textile auxiliaries, antimicrobial substances and Finishing agents, in the form of inorganic or organic compounds or mixtures.

It is within the scope of the invention, the invention for Refinish foam to be used anywhere and with any To produce means and only in the finished state in the laundry drum bring in; In particular, any such as appropriate Frothing, as he for example to prepare beaten Cream or milk by means of compressed air, nitrous oxide or the like is to be used. Preferably, the generation of the foam happens directly in the washing machine, with particular preference to be used according to the invention Foam is produced by means of the laundry drum.

The Laundry drum for holding the textiles is particular stored in a tub, wherein the foamed Solution also provided in the tub becomes. In particular, each principle known Means for providing a washing or rinsing liquor in the washing machine are used. Will the laundry drum operated at a high speed, it forms due to the mechanical interactions between the fast-spinning Laundry drum and a small amount of liquid in the tub foam. The small amount of liquid is defined as at least the amount of water that needs is going to be the gap between a bottom of the tub and washing drum to refill. The high speed for producing the foam may be a spin speed at which the textiles are firmly attached to the wall of the laundry drum, as with a normal washing process for dewatering through Slingshot is practiced. The liquid level preferably extends in the tub while about or exactly until to the laundry drum. Is the gap between laundry drum and tub largely by the resulting foam filled (by the thereby occurring volume increase), he penetrates the gap between the door cuff and laundry drum and the usually in it located flood holes in the laundry drum and wets the textiles in motion.

Of the Foam from the aqueous solution of the chemical is preferably by the operation of the laundry drum with a high speed, more preferably in the range between 150 and 1800 rpm. However, the condition is that the respective chemical is foamable. Is not this the Case, the solution must contain a small amount of surfactant, preferably Neosurfactant, in addition to the chemical to be used for refining be added.

In a preferred embodiment of the invention Procedure is the foam by the - possibly additional - blowing generated by gas in the solution. More preferred is the thereby taking place volume increase of the preparation with the chemical is so great that the foam gets into the interior of the Drum passes and wets the laundry located therein. Appropriately, this is a gas used in Reference to the particular chemical to be used and the treatment to be treated Textiles is inert. That is, the gas with the liquid or the textiles are not reacted in an undesirable manner or different influences on the liquid or the textiles exercises. Preferably, air is used as the gas, though even such a gas can be used, in a more strict sense inert, such as pure nitrogen, and always, if there is a special reason for it.

in the Frame of another preferred embodiment of the invention Procedure, the wetting of the textiles with the foam, by the laundry drum is rotated at a washing speed. At this washing speed, a piece of textile is turning from the Wash drum each one piece taken to at a certain height above the rest To release textiles from the laundry drum and again to fall down on the remaining textiles. This takes place So an intensive mechanical treatment of the textiles, which according to the invention for uniform Incorporation of the foam is used in the textiles. The laundry drum is driven in a conventional manner by a motor.

in the Frame of a further preferred embodiment of the invention Process takes place an alternating operation of the laundry drum Washing speed, wherein essentially only the laundry in the existing foam is circulated, and with spin speed, where increased foam is generated. It is possible the textiles with a very small amount of liquid completely wet. The required amount of water determined from the water holding capacity of the respective Textiles at the realized spin speed and the above In addition, required amount of water to fill the Gap between the tub bottom and laundry drum. Because of the more favorable fleet ratio a significantly higher utilization of the chemical used possible in accordance with a particularly high degree of extraction. As the treated textiles are not as usual a high Require liquor ratio, reduce the spin the amount of wastewater generated and the loss of chemical. By the Reduction of the required solution of the respective Chemical can be used to achieve the same effect Chemical for finishing a given amount of textile significantly be reduced.

Based the figures of the accompanying drawing will be an embodiment the method according to the invention in more detail below explained. Show it:

1 schematically a household washing machine,

2 schematically in a diagram the alternating operation of the washing drum of the washing machine with washing speed and spin speed.

1 shows a household washing machine 1 which one in a tub 3 stored washing drum or washing drum 2 having. The further is a control device 4 ge shows, which drives the motor of the laundry drum. In the tub 3 is a liquid or liquor consisting of a solution for refining into the washing drum 2 filled chemicals used in addition to any necessary additives such as a neosurfactant filled in water. The mirror 5 this liquid in the tub 3 is approximately or exactly to the laundry drum 2 , Now the laundry drum 2 operated at a high speed, it forms due to the strong mechanical interactions between it and the liquid level 5 at the bottom of the tub 3 foam 6 from the liquid. 1 shows this foam 6 passing over the gap between a door cuff and the laundry drum 2 in the laundry drum 2 has penetrated.

2 shows schematically in a diagram the alternating operation of the laundry drum 2 at washing speed (here 50 rpm), with essentially only the laundry being moved, and spin speed (here 900 rpm), with increased foam 6 is produced.

The advantage of the method according to the invention is that a wide variety of textiles can be finished, in contrast to the normal process in the household washing machine 1 the required amounts of water and chemicals are significantly reduced. Furthermore, the degree of exhaustion of the fleet in the household washing machine 1 significantly increased compared to normal washing and rinsing processes. Thus, the inventive method is not only cheaper, but also environmentally friendly.

In an exemplary method, the laundry drum becomes 2 a conventional household washing machine 1 filled with 6 kg of textiles. There are provided 7.5 liters of impregnating solution (compare, however, according to conventional manner, 15 liters). The spin speed is set to 800 rpm. By spinning between the fast spinning laundry drum 2 and a small amount of liquid at the bottom of the tub 3 , here about 3 l, will foam 6 generated. Due to the volume increase taking place, the foam penetrates 6 in particular via the gap between the door cuff and the laundry drum 2 as well as by the usual practice provided flood holes in the laundry drum 2 in the laundry drum 2 and wets the textiles contained therein. By alternating operation of the laundry drum 2 with washing speed and spin speed, (a) foam is produced and (b) the fabrics are circulated. As a result, the textiles are evenly wetted. In the final spin, the resulting waste water quantity is reduced to 2 to 3 l (see 10 to 12 l in the conventional manner). The amount of waste water is thus significantly reduced.

QUOTES INCLUDE IN THE DESCRIPTION

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Cited patent literature

• - DE 2402342 A1 [0006]

Claims (11)

Process for refining textiles by means of a chemical in a household washing machine ( 1 ) with a laundry drum ( 2 ), in which the textiles are receivable, comprising the steps of: (i) picking the textiles into the laundry drum ( 2 ); (ii) providing an aqueous solution ( 5 ) of the chemical; (iii) producing a foam ( 6 ) from the aqueous solution ( 5 ) of the chemical, and introduction of the foam ( 6 ) in the laundry drum ( 2 ); (iv) moving the textiles in the foam ( 6 ) by turning the laundry drum ( 2 ), and wetting the textiles with the foam ( 6 ), Process according to claim 1, wherein the foam ( 6 ) by means of the laundry drum ( 2 ) is produced. Method according to claim 2, wherein the laundry drum ( 2 ) for receiving the textiles in a tub ( 3 ), the solution ( 5 ) in the tub ( 3 ) and wherein the foam ( 6 ) by turning the laundry drum ( 2 ) is produced. Method according to claim 3, wherein the production of the foam ( 6 ) by turning the laundry drum ( 2 ) at a high speed and provide a small amount of solution ( 5 ) in the tub ( 3 ) he follows. Method according to one of the preceding claims, wherein the production of the foam ( 3 ) by blowing gas into the solution ( 5 ) he follows. Method according to one of the preceding claims, wherein the required amount of solution ( 5 ) for wetting the textiles with foam ( 6 ) from the water retention capacity of the respective textiles and the required amount for filling a gap between a bottom of the tub ( 3 ) and the laundry drum ( 2 ). Method according to one of the preceding claims, wherein the wetting of the textiles by rotating the laundry drum ( 2 ) with washing speed. Method according to one of claims 1 to 6, wherein the wetting of the textiles by rotating the laundry drum ( 2 ) takes place alternately with washing speed and spin speed. Method according to one of the preceding claims, wherein the chemical is for dyeing or impregnating the textiles is determined. Control device ( 4 ) for a household washing machine ( 1 ), which control device ( 4 ) is adapted to carry out a process for refining textiles by means of a chemical in the household washing machine ( 1 ) with a laundry drum ( 2 ) into which the textiles are receivable, the method comprising the steps of: (i) picking the textiles into the laundry drum ( 2 ); (ii) providing an aqueous solution ( 5 ) of the chemical; (iii) producing a foam ( 6 ) from the aqueous solution ( 5 ) of the chemical, and introduction of the foam ( 6 ) in the laundry drum ( 2 ); and (iv) moving the fabrics in the foam ( 6 ) by turning the laundry drum ( 2 ), and wetting the textiles with the foam ( 6 ), Household washing machine ( 1 ) with a control device ( 4 ), which is adapted to carry out a method for refining textiles by means of a chemical, and with a laundry drum ( 2 ) into which the textiles are receivable, the method comprising the steps of: (i) picking the textiles into the laundry drum ( 2 ); (ii) providing an aqueous solution ( 5 ) of the chemical; (iii) producing a foam ( 6 ) from the aqueous solution ( 5 ) of the chemical, and introduction of the foam ( 6 ) in the laundry drum ( 2 ); and (iv) moving the fabrics in the foam ( 6 ) by turning the laundry drum ( 2 ), and wetting the textiles with the foam ( 6 ),

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