EP0505777B1 - Method for washing and bleaching laundry - Google Patents
Method for washing and bleaching laundry Download PDFInfo
- Publication number
- EP0505777B1 EP0505777B1 EP92103721A EP92103721A EP0505777B1 EP 0505777 B1 EP0505777 B1 EP 0505777B1 EP 92103721 A EP92103721 A EP 92103721A EP 92103721 A EP92103721 A EP 92103721A EP 0505777 B1 EP0505777 B1 EP 0505777B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- washing
- bleaching agent
- phase
- flushed
- bleaching
- 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.)
- Revoked
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Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/02—Devices for adding soap or other washing agents
Definitions
- the invention relates to a method for washing and bleaching laundry according to the preamble of patent claim 1.
- Bleaches are important for stain treatment when washing laundry.
- Bleach activators e.g. B. the tetraacetylethylenediamine (TEAD) activate the perborate below 60 ° C and enable bleaching in the 40 ° C washing area. Peracid is formed, which removes the stains.
- TEAD tetraacetylethylenediamine
- a method for washing and bleaching laundry in a program-controlled washing machine with a washing drum rotating in a tub is known.
- This washing machine has a detergent dispenser connected to a water inflow system and having a plurality of chambers for storing detergents and a bleach, these detergents being able to be dispensed into the laundry drum via the water inflow system equipped with program-controlled valves.
- the bleaching-in process for the bleaching agent is only triggered with a certain time delay after the start of the main washing phase via the control device of the washing machine.
- the object of the invention is to make the time-delayed flushing of the bleaching agent into the wash-active wash liquor much more effective.
- the solution to this problem according to the invention is that the rinsing process for the bleaching agent is controlled as a function of the wash liquor temperature and the rinsing of the bleaching agent is carried out at a wash liquor temperature between 30 and 60 ° C, preferably at 40 ° C.
- the fact that the bleaching agent is flushed into the active wash liquor as a function of the wash liquor temperature means that the enzymes in the detergent can initially work unhindered at the removal of protein-containing contaminants even at low wash temperatures.
- the dirt removal z. B. of blood is significantly improved in this way without a deterioration of the subsequent bleaching effect must be accepted.
- general use of full detergents can therefore be dispensed with and the environment can thus be significantly relieved.
- the proposed method for supplying a bleaching agent is particularly suitable for program-controlled washing machines which are combined with one in one Suds container revolving drum and a detergent dispenser designed as a drawer are equipped with several chambers for detergents and washing aids and in which the washing process is divided into a prewash or soak phase I, a main wash phase II and a rinse and spin phase III.
- the bleaching agent is expediently flushed in at a time during the heating-up period A of the main washing phase II or shortly after the end of this period.
- the possible time range for flushing in the bleaching agent is indicated by B in the attached working diagram. It is expedient to rinse the bleaching agent about 5 to 20 minutes, preferably 10 minutes, after the start of the main washing phase II.
- the bleaching agent is flushed in depending on the temperature, this process takes place at a wash liquor temperature between 30 and 60 ° C., but preferably at 40 ° C.
- the bleaching agent is flushed in with about one liter of fresh water. When washing in a bleach, u.
- the main wash phase II may also be extended somewhat.
- the separate bleaching agent can be rinsed in depending on the actuation of a wash program additional key or depending on a corresponding program selection.
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Detergent Compositions (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Description
Die Erfindung betrifft ein Verfahren zum Waschen und Bleichen von Wäsche nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a method for washing and bleaching laundry according to the preamble of
Bleichmittel sind beim Waschen von Wäsche für die Fleckbehandlung wichtig. Man verwendet dazu z. B. Natriumperborat, das während des Waschvorganges bei Temperaturen ab 60° C bleichaktiven Sauerstoff abgibt und z. B. Rotwein-, Obst- und Gemüseflecken durch Oxydation zerstört. Bleichaktivatoren, z. B. das Tetraacetylethylendiamin (TEAD) aktivieren das Perborat schon unterhalb 60° C und ermöglichen im 40°C-Waschbereich eine Bleiche. Es wird dabei Persäure gebildet, die die Flecken beseitigt.Bleaches are important for stain treatment when washing laundry. One uses z. B. sodium perborate, which releases bleach-active oxygen during the washing process at temperatures from 60 ° C and z. B. Red wine, fruit and vegetable stains destroyed by oxidation. Bleach activators, e.g. B. the tetraacetylethylenediamine (TEAD) activate the perborate below 60 ° C and enable bleaching in the 40 ° C washing area. Peracid is formed, which removes the stains.
Aus der US-A-3,027,741 ist ein Verfahren zum Waschen und Bleichen von Wäsche in einer programmgesteuerten Waschmaschine mit einer in einem Laugenbehälter umlaufenden Wäschetrommel bekannt. Diese Waschmaschine hat eine an ein Wasserzuflußsystem angeschlossene Waschmittel-Einspüleinrichtung mit mehreren Kammern zur Bevorratung von Waschmitteln und eines Bleichmittels, wobei diese Mittel über das mit programmgesteuerten Ventilen ausgerüstete Wasserzuflußsystem in die Wäschetrommel einspülbar sind. Der Einspülvorgang für das Bleichmittel wird erst mit einer gewissen Zeitverzögerung nach Beginn der Hauptwaschphase über die Steuereinrichtung der Waschmaschine ausgelöst.From US-A-3,027,741 a method for washing and bleaching laundry in a program-controlled washing machine with a washing drum rotating in a tub is known. This washing machine has a detergent dispenser connected to a water inflow system and having a plurality of chambers for storing detergents and a bleach, these detergents being able to be dispensed into the laundry drum via the water inflow system equipped with program-controlled valves. The bleaching-in process for the bleaching agent is only triggered with a certain time delay after the start of the main washing phase via the control device of the washing machine.
Ausgehend von diesem Stand der Technik liegt der Erfindung die Aufgabe zugrunde, das zeitverzögernde Einspülen des Bleichmittels in die waschaktive Waschflotte wesentlich wirkungsvoller zu gestalten.Proceeding from this prior art, the object of the invention is to make the time-delayed flushing of the bleaching agent into the wash-active wash liquor much more effective.
Die Lösung dieser Aufgabe gemaß der Erfindung besteht darin, daß der Einspülvorgang für das Bleichmittel in Abhängigkeit von der Waschflottentemperatur gesteuert wird und das Einspülen des Bleichmittels bei einer Waschflottentemperatur zwischen 30 und 60° C, vorzugsweise bei 40° C, durchgeführt wird.The solution to this problem according to the invention is that the rinsing process for the bleaching agent is controlled as a function of the wash liquor temperature and the rinsing of the bleaching agent is carried out at a wash liquor temperature between 30 and 60 ° C, preferably at 40 ° C.
Dadurch, daß das Einspülen des Bleichmittels in die aktive Waschflotte in Abhängigkeit von der Waschflottentemperatur erfolgt, wird erreicht, daß die Enzyme im Waschmittel zunächst noch bei niederen Waschtemperaturen ungehindert an der Entfernung eiweißhaltiger Verschmutzungen arbeiten können. Die Schmutzentfernung z. B. von Blut wird auf diese Weise deutlich verbessert, ohne daß eine Verschlechterung der nachfolgenden Bleichwirkung in Kauf genommen werden muß. Bei dem separaten und verspäteten Einsatz des Bleichmittels kann deshalb auch auf eine generelle Verwendung von Vollwaschmitteln verzichtet und damit die Umwelt wesentlich entlastet werden.The fact that the bleaching agent is flushed into the active wash liquor as a function of the wash liquor temperature means that the enzymes in the detergent can initially work unhindered at the removal of protein-containing contaminants even at low wash temperatures. The dirt removal z. B. of blood is significantly improved in this way without a deterioration of the subsequent bleaching effect must be accepted. With the separate and late use of the bleach, general use of full detergents can therefore be dispensed with and the environment can thus be significantly relieved.
Das vorgeschlagene Verfahren zum Zuführen eines Bleichmittels ist vor allem für programmgesteuerte Waschmaschinen geeignet, die mit einer in einem Laugenbehälter umlaufenden Wäschetrommel und einer als Schublade ausgebildeten Waschmittel-Einspülvorrichtung mit mehreren Kammern für Wasch- und Waschhilfsmittel ausgerüstet sind und bei denen der Waschprozeß in eine Vorwasch- bzw. Einweichphase I, eine Hauptwaschphase II und eine Spül- und Schleuderphase III unterteilt ist. Zweckmäßig erfolgt die Einspülung des Bleichmittel zu einem Zeitpunkt während des Aufheiz-Zeitabschnittes A der Hauptwaschphase II oder kurz nach Beendigung dieses Zeitabschnittes. Der mögliche Zeitbereich zum Einspülen des Bleichmittels ist im beigefügtem Arbeitsdiagramm mit B bezeichnet.
Zweckmäßig ist es, das Bleichmittel etwa 5 bis 20 Minuten, vorzugsweise 10 Minuten, nach Beginn der Hauptwaschphase II einzuspülen. Bei temperaturabhängiger Einspülung des Bleichmittels erfolgt dieser Vorgang bei einer Waschflottentemperatur zwischen 30 und 60° C, vorzugsweise jedoch bei 40° C. Das Einspülen des Bleichmittels wird dabei mit etwa einem Liter Frischwasser vorgenommen. Beim Einspülen eines Bleichmittels könnte u. U. auch die Hauptwaschphase II zeitlich etwas verlängert werden. Das separate Einspülen des Bleichmittels kann in Abhängigkeit vom Betätigen einer Waschprogramm-Zusatztaste oder in Abhängigkeit einer entsprechenden Programmwahl vorgenommen werden.The proposed method for supplying a bleaching agent is particularly suitable for program-controlled washing machines which are combined with one in one Suds container revolving drum and a detergent dispenser designed as a drawer are equipped with several chambers for detergents and washing aids and in which the washing process is divided into a prewash or soak phase I, a main wash phase II and a rinse and spin phase III. The bleaching agent is expediently flushed in at a time during the heating-up period A of the main washing phase II or shortly after the end of this period. The possible time range for flushing in the bleaching agent is indicated by B in the attached working diagram.
It is expedient to rinse the bleaching agent about 5 to 20 minutes, preferably 10 minutes, after the start of the main washing phase II. If the bleaching agent is flushed in depending on the temperature, this process takes place at a wash liquor temperature between 30 and 60 ° C., but preferably at 40 ° C. The bleaching agent is flushed in with about one liter of fresh water. When washing in a bleach, u. The main wash phase II may also be extended somewhat. The separate bleaching agent can be rinsed in depending on the actuation of a wash program additional key or depending on a corresponding program selection.
Claims (3)
- Method of washing and bleaching laundry in a programme-controlled washing machine with a laundry drum rotating in a lye tub and a washing agent dispenser comprising a plurality of chambers for supplying washing agents and a bleaching agent, in which the washing process is divided into a prewash or softening phase (I), a main washing phase (II), and a rinsing and spinning phase (III), and the bleaching agent is flushed into the laundry drum with a specified time delay after the start of the main washing phase (II), characterised in that the operation of flushing in the bleaching agent is controlled as a function of the washing liquid temperature and the bleaching agent is flushed in at a washing liquid temperature of between 30 and 60°C, preferably of 40°C.
- Method according to claim 1, characterised in that the bleaching agent is flushed in with approximately one litre of fresh water.
- Method according to claim 1, characterised in that when a bleaching agent is flushed in, the main washing phase (II) is lengthened somewhat in time.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4109728A DE4109728A1 (en) | 1991-03-25 | 1991-03-25 | METHOD FOR WASHING AND BLEACHING LAUNDRY |
| DE4109728 | 1991-03-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0505777A1 EP0505777A1 (en) | 1992-09-30 |
| EP0505777B1 true EP0505777B1 (en) | 1995-10-11 |
Family
ID=6428136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92103721A Revoked EP0505777B1 (en) | 1991-03-25 | 1992-03-05 | Method for washing and bleaching laundry |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0505777B1 (en) |
| DE (2) | DE4109728A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1266838B1 (en) * | 1994-05-26 | 1997-01-21 | Merloni Elettrodomestici Spa | IMPROVED WASHING MACHINE WITH DISTRIBUTION OF WASHING AGENTS |
| JP2019180549A (en) * | 2018-04-03 | 2019-10-24 | パナソニックＩｐマネジメント株式会社 | Control method and washing machine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3027741A (en) * | 1960-08-22 | 1962-04-03 | Gen Motors Corp | Dispenser for a clothes washer |
| US3320777A (en) * | 1965-08-09 | 1967-05-23 | Gen Electric | Automatic washing machine including dispensing means |
-
1991
- 1991-03-25 DE DE4109728A patent/DE4109728A1/en not_active Withdrawn
-
1992
- 1992-03-05 DE DE59203937T patent/DE59203937D1/en not_active Revoked
- 1992-03-05 EP EP92103721A patent/EP0505777B1/en not_active Revoked
Also Published As
| Publication number | Publication date |
|---|---|
| DE59203937D1 (en) | 1995-11-16 |
| EP0505777A1 (en) | 1992-09-30 |
| DE4109728A1 (en) | 1992-10-01 |
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