EP2158350A2 - Method for the treatment of laundry, and washing machine suitable for this purpose - Google Patents

Method for the treatment of laundry, and washing machine suitable for this purpose

Info

Publication number
EP2158350A2
EP2158350A2 EP08760070A EP08760070A EP2158350A2 EP 2158350 A2 EP2158350 A2 EP 2158350A2 EP 08760070 A EP08760070 A EP 08760070A EP 08760070 A EP08760070 A EP 08760070A EP 2158350 A2 EP2158350 A2 EP 2158350A2
Authority
EP
European Patent Office
Prior art keywords
amount
laundry
washing machine
drum
laundry items
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
EP08760070A
Other languages
German (de)
French (fr)
Other versions
EP2158350B1 (en
Inventor
Harald MOSCHÜTZ
Ingo Schulze
Andreas Hanau
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Priority to PL08760070T priority Critical patent/PL2158350T3/en
Publication of EP2158350A2 publication Critical patent/EP2158350A2/en
Application granted granted Critical
Publication of EP2158350B1 publication Critical patent/EP2158350B1/en
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
    • D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00 
    • D06F39/04—Heating arrangements
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2103/00—Parameters monitored or detected for the control of domestic laundry washing machines, washer-dryers or laundry dryers
    • D06F2103/02—Characteristics of laundry or load
    • D06F2103/04—Quantity, e.g. weight or variation of weight
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F2105/00—Systems or parameters controlled or affected by the control systems of washing machines, washer-dryers or laundry dryers
    • D06F2105/56—Remaining operation time; Remaining operational cycles
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F33/00—Control of operations performed in washing machines or washer-dryers 
    • D06F33/30—Control of washing machines characterised by the purpose or target of the control 
    • D06F33/32—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry
    • D06F33/36—Control of operational steps, e.g. optimisation or improvement of operational steps depending on the condition of the laundry of washing
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F34/00—Details of control systems for washing machines, washer-dryers or laundry dryers
    • D06F34/14—Arrangements for detecting or measuring specific parameters
    • 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 
    • D06F39/40—Steam generating arrangements

Definitions

  • the invention relates to a method for the treatment of laundry items in a washing machine and a particularly suitable for carrying out this method washing machine.
  • the laundry items to be washed are treated with an amount of water sufficient to saturate the laundry items with water and an additional minimum free liquor, generally 2 to 3 liters, which allows mass transfer between bound and free liquors. This can be done in particular a transfer of heat between the heating, which heats the free fleet, and the laundry items.
  • the adjustment of the amount of water is ensured in each case by suitable methods for controlling the water level in the drum and the adjustment of the amount of the absorbency of the laundry items.
  • the free liquor results after deduction of the amount of water bound in the laundry from the amount of water filled into the washing machine.
  • Cotton fabric binds about 200% of its own weight, so that a load of 6 kg of cotton fabric binds about 12 l of water.
  • both the washing-active substances for washing and the dissolved dirt are removed from the laundry during heating by the constant change from bound to free liquor and vice versa. Since many soiling on or in items of laundry are only solvable at a higher temperature, both free and bound liquor must be heated during the heating.
  • the energy consumption of a washing machine is essentially determined by the energy required for the heating of the water. A reduction in the amount of water in a washing machine would therefore be desirable, in particular a reduction in the amount of free liquor.
  • a reduction in the amount of water in a washing machine would therefore be desirable, in particular a reduction in the amount of free liquor.
  • a conventional washing machine must be ensured by the free fleet of heat transfer from the heater into the laundry. Any reduction in the free fleet and thus a reduction in energy consumption are thus difficult to achieve.
  • An object of the invention is therefore to provide a method for treating laundry in a washing machine, in which energy and / or water can be saved over known methods.
  • the invention thus relates to a method for treating items of laundry with an aqueous wash liquor in a washing machine with a lye drainage system arranged at the bottom of a tub, a rotatably mounted drum and a heater for direct heating of a load containing the wash liquor, the method comprising steps a ) Adding the wash liquor to the load (a1) of an amount (a2) less than or equal to an amount (a3) required to saturate the wash with water
  • Wash liquor from the laundry includes.
  • step c) is performed only after completion of step b).
  • the temperature T w of the water in step c) is preferably at most 30 ° C.
  • the direct heating of the laundry containing the wash liquor is preferably carried out with hot foam, hot air, water vapor and / or electromagnetic radiation obtained using the heating device (s).
  • the heating device for direct heating of a load containing the wash liquor may be attached in different places in the washing machine according to the invention.
  • the heating device is arranged in the tub and in particular in the drum.
  • the hot foam is preferably produced by rotating the drum at a speed Ui less than an application speed U A of the laundry, turning on the heater, and heating the foam.
  • the application speed U A of the laundry is the rotational speed of the drum at which the items of laundry can be applied to an inner wall of the drum, for example a speed in the range of 300 to 500 revolutions per minute.
  • the temperature gradient is adjustable via the heater output and the foam density. Since primarily the surface of the laundry is heated, it is advantageous if the laundry is turned intensively. This can advantageously be done by reversing the operation of the drum at a speed of 30 to 100 revolutions per minute.
  • the heating in step b) by means of electromagnetic radiation is preferably effected by using a microwave heating and / or an infrared radiator ("IR radiator").
  • Microwave heating must be ensured that there are no short circuits due to metal parts that may be present in the laundry items.
  • certain synthetic fibers may not be stable when heated with microwaves.
  • seams made of polyester could cause damage to items of laundry.
  • direct heating of the laundry is also possible.
  • the temperature gradient is adjustable via the power of the IR emitter. Since in particular the surface of the textile pieces is heated, in this case an intensive redistribution of the laundry items by reversing operation of the drum is advantageous.
  • the heating of the wetted laundry with hot air has the advantage that a temperature gradient is adjustable, whereby heat losses can be reduced.
  • a heater known from a tumble dryer can be used to generate hot air.
  • the use of hot air is therefore particularly advantageous in a combination device that combines the function of a washing machine with that of a tumble dryer.
  • the drum in step b) is preferably for a period of 10 to 30 minutes at a speed of 30 to 100 revolutions per
  • Heating the wetted laundry, which generally takes place on the surface, due to the improved accessibility of the surface can be carried out as uniformly as possible.
  • step c) in step b) substantially only loosened dirt still remaining in the laundry items can be rinsed out.
  • step c With the end of step c), the actual washing process is generally completed.
  • the laundry items can then be rinsed and spun as in a conventional washing program.
  • the laundry items contain at most the amount of water required for the saturation of the laundry items with wash liquor.
  • the ratio of the amount (a2) to the amount (a3) is in the range of 0.5 to 0.9.
  • the ratio of the amount (a2) to the amount (a3) is preferably in the range of 0.5 to 0.7.
  • an amount of water (a2) of 10 liters for example, 8 liters using steam could be used.
  • the saturation amount (a3) of water is about twice a loading amount (a1).
  • the saturation amount (a3) may be significantly lower.
  • the values for the saturation amount (a3) are known per se, so that the amount of water (a2) can be specified in a wash program.
  • the loading quantity (a1) can be determined by a measure known per se.
  • a first sensor is used to determine the amount of liquid or foam in the tub, the sensor signal of which can be tracked during the process.
  • a hydrostatic pressure p measured with the aid of the first sensor can be compared with the amount of water or wash liquor charged.
  • the laundry located in the drum absorbs water or washing liquor, which can therefore not contribute to an increase in the hydrostatic pressure.
  • the amount of laundry (loading quantity (a1)) and its degree of moisture penetration (degree of wetting) can be determined.
  • the duration of wetting in step a) can be matched very precisely to the predetermined amount of laundry.
  • a program for the inventive method sufficient wetting of the laundry cost is signaled to a program, so that step a) is completed and step b) can be started.
  • the monitoring of a temperature in the drum is advantageous.
  • a second sensor for determining the temperature in the drum is preferably arranged in the washing machine.
  • the amount of water or wash liquor to be used in the process according to the invention can additionally be reduced by rotating the drum at high speed during steps a) and / or b). In this case, if necessary, the water / wash liquor contained in the laundry items is thrown off and a reduction in the amount of water or wash liquor required for saturation is achieved.
  • the invention also relates to a washing machine with a program control for controlling a program sequence, a rotatably mounted in a tub drum, a bottom of the tub arranged Laugenablaufsystem, and a drive motor for the drum, the washing machine additionally a heater for direct heating of a wash liquor containing loading amount (a1) with laundry.
  • the heating device is in a first preferred embodiment, a device for generating steam or hot air.
  • the heating device is a microwave heater and / or an IR radiator.
  • a first sensor for determining a quantity of a liquid present in the tub and possibly foam, wherein the sensor signal can be preferably tracked during the process.
  • a second sensor for determining a temperature in the drum is arranged.
  • the invention has the advantage that compared to conventional methods, a significantly lower amount of water or wash liquor is heated. This amount corresponds essentially to the amount necessary for saturating the laundry items, which can still be reduced by appropriate rapid rotation of the drum during heating. As a result, a significant saving of water and energy is possible.
  • An embodiment of the invention will be described in more detail below with reference to FIG 1.
  • Figure 1 is a schematic representation of the parts relevant to the following description of an embodiment of a washing machine in which a method as described above can be carried out. Other embodiments are conceivable.
  • the washing machine of the embodiment shown in Figure 1 comprises a tub 1, in which a drum 2 rotatably mounted and can be operated by a drive motor 14.
  • the axis of rotation 3 of the drum 2 is directed from the horizontal by a small angle (e.g., 13 °) forwardly upwards, so as to provide easier access and insight into the interior of the drum 2.
  • Wäschemit choir 4 allow redistribution of the laundry items 7 during rotation of the drum 2.
  • scooping devices 5 allow intensive rinsing of the cleaned laundry items 7 with water. 6
  • a heating device 16 is located outside of the tub 1 and the drum 2.
  • the heating device 16 shown in FIG. 1 can in particular provide hot air or water vapor.
  • a foam optionally used in step b) of the process described above and produced by rotating the drum 2 with the laundry items 7 can be heated via a heating device 13 arranged at the bottom of the liquor container 1.
  • the wash liquor is partially thrown off the laundry 7 and so intensively mixed with air, whereby foam is formed.
  • the rotating drum 2 in the wash liquor which is below the drum 2 in the tub 1, enter air and thus cause foam.
  • the formation of foam can be assisted by adding a corresponding detergent to the wash liquor.
  • the washing machine of Fig. 1 also has a liquor inlet system 8, 9, 10, which comprises a water connection fitting for the domestic water network 8, an electrically controllable valve 9 and a supply line 10 to the tub 1, which may also have a liquor inlet system 8, 9, 10, which comprises a water connection fitting for the domestic water network 8, an electrically controllable valve 9 and a supply line 10 to the tub 1, which may also have a liquor inlet system 8, 9, 10, which comprises a water connection fitting for the domestic water network 8, an electrically controllable valve 9 and a supply line 10 to the tub 1, which may also have a
  • Inlet water can transport there presented detergent in the tub 1.
  • valve 9 as well as the heater 13 may be controlled by a controller ("program control") 12 in response to a program flowchart that corresponds to a timer program and / or to the achievement of certain measurements of Parameters such as speed of the drum 2 may be bound within the washing machine.
  • controller program control
  • a lye drain system 18 with any necessary lines and drain valve and drain pump is, as is known, the sake of clarity only shown schematically as an arrow.
  • a first sensor 15 for the measurement of the hydrostatic pressure p is provided in the tub 1.
  • a second sensor 17 for determining a temperature in the drum 2 is arranged.
  • the second sensor 17 may also be located in a space between the tub 1 and the drum 2.
  • step a) of the above-described method for treating the laundry water is introduced in an amount sufficient to fill a space between the tub 1 and the drum 2 at a lower end of the drum with water and can wet the laundry 7.
  • This wash liquor is gradually absorbed by the laundry items 7 until they are wetted to saturation. More wash or water does not have to be added.
  • the heating of the laundry items 7 with the washing liquor bound therein is carried out directly and without mediation by an unbound residue of washing liquor.
  • This contamination in the laundry items 7 are initially solved, but not completely washed out. This is done only in a subsequent step by additionally added, not or at least not very highly heated water, which no longer has to contribute to solving the contaminants, but only to their rinsing from the laundry 7.
  • a comparatively low temperature of at most 40 is sufficient 0 C, possibly even only at most 30 0 C.
  • the required heating energy is therefore very low, since heating energy must be spent in the first place only for the bound in the laundry items 7 liquor to be treated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Control Of Washing Machine And Dryer (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Accessory Of Washing/Drying Machine, Commercial Washing/Drying Machine, Other Washing/Drying Machine (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

The invention relates to a method for the treatment of laundry (7), having a washing lye in a washing machine comprising a lye discharge system (18) disposed on the base of a lye container (1), a pivotally supported drum (2), and a heating device (13, 16) for the direct heating of a load (a1) of laundry (7) containing the washing lye, the method comprising the steps of: a) adding the washing lye to the load (a1) in an amount (a2) smaller or equal to an amount (a3) required for saturation of the laundry (7) with water ("saturation amount"), and wetting the laundry (7); b) heating the wetted laundry (7) by means of the heating device (13, 16); and c) adding water at a temperature Tw of no more than 40°C for rinsing the washing lye from the laundry (7). The invention further relates to a washing machine suitable for carrying out the method.

Description

Verfahren zur Behandlung von Wäschestücken sowie hierzu geeignete Waschmaschine Process for the treatment of laundry items and washing machine suitable for this purpose
Die Erfindung betrifft ein Verfahren zur Behandlung von Wäschestücken in einer Waschmaschine sowie eine zur Durchführung dieses Verfahrens besonders geeignete Waschmaschine.The invention relates to a method for the treatment of laundry items in a washing machine and a particularly suitable for carrying out this method washing machine.
Bei bekannten Waschverfahren werden die zu waschenden Wäschestücke mit einer Menge an Wasser behandelt, die zur Sättigung der Wäschestücke mit Wasser ausreicht, sowie einer zusätzlichen minimalen freien Flotte, im Allgemeinen 2 bis 3 Liter, die einen Stoffaustausch zwischen gebundener und freier Flotte ermöglicht. Dadurch kann insbesondere ein Transfer von Wärme zwischen der Heizung, die die freie Flotte erwärmt, und den Wäschestücken erfolgen. Die Einstellung der Menge an Wasser wird im Einzelfall durch geeignete Verfahren zur Regelung des Wasserstands in der Trommel und der Anpassung der Menge an das Saugvermögen der Wäschestücke sichergestellt. Die freie Flotte ergibt sich nach Abzug der in den Wäschestücken gebundenen Wassermenge von der in die Waschmaschine eingefüllten Wassermenge. Baumwollgewebe bindet etwa 200 % seines Eigengewichts, so dass eine Beladungsmenge von 6 kg Baumwollgewebe ungefähr 12 I Wasser bindet.In known washing processes, the laundry items to be washed are treated with an amount of water sufficient to saturate the laundry items with water and an additional minimum free liquor, generally 2 to 3 liters, which allows mass transfer between bound and free liquors. This can be done in particular a transfer of heat between the heating, which heats the free fleet, and the laundry items. The adjustment of the amount of water is ensured in each case by suitable methods for controlling the water level in the drum and the adjustment of the amount of the absorbency of the laundry items. The free liquor results after deduction of the amount of water bound in the laundry from the amount of water filled into the washing machine. Cotton fabric binds about 200% of its own weight, so that a load of 6 kg of cotton fabric binds about 12 l of water.
Bei diesen Verfahren werden während des Aufheizens durch den ständigen Wechsel von gebundener zu freier Flotte und umgekehrt sowohl die waschaktiven Substanzen zum Wäschestück als auch der gelöste Schmutz vom Wäschestück abtransportiert. Da viele Verschmutzungen an oder in Wäschestücken nur bei höherer Temperatur lösbar sind, müssen während des Aufheizens sowohl freie als auch gebundene Flotte erwärmt werden.In these processes, both the washing-active substances for washing and the dissolved dirt are removed from the laundry during heating by the constant change from bound to free liquor and vice versa. Since many soiling on or in items of laundry are only solvable at a higher temperature, both free and bound liquor must be heated during the heating.
Der Energieverbrauch einer Waschmaschine wird wesentlich durch die für die Erwärmung des Wassers benötigte Energie bestimmt. Eine Verringerung der Menge an Wasser in einer Waschmaschine wäre daher wünschenswert, insbesondere eine Verringerung der Menge an freier Flotte. Jedoch muss bei einer herkömmlichen Waschmaschine durch die freie Flotte der Wärmetransport von der Heizung in die Wäschestücke gewährleistet werden. Eine beliebige Reduzierung der freien Flotte und damit eine Verringerung des Energieverbrauches sind somit nur schwer zu erreichen.The energy consumption of a washing machine is essentially determined by the energy required for the heating of the water. A reduction in the amount of water in a washing machine would therefore be desirable, in particular a reduction in the amount of free liquor. However, in a conventional washing machine must be ensured by the free fleet of heat transfer from the heater into the laundry. Any reduction in the free fleet and thus a reduction in energy consumption are thus difficult to achieve.
Bekannte Maßnahmen zur Verringerung der freien Flotte in einer Trommelwaschmaschine sind die Reduzierung eines Spalts zwischen der Trommel und dem Laugenbehälter oder eine externe Erwärmung der Flotte in einem Durchlauferhitzer. Allen bekannten Maßnahmen gemeinsam ist jedoch die Notwendigkeit, zur Erwärmung einen zusätzlichen, wenn auch reduzierten Anteil an freier Flotte zu benötigen.Known measures for reducing the free liquor in a drum washing machine are the reduction of a gap between the drum and the tub or an external heating of the liquor in a water heater. Common to all known measures, however, is the need to require an additional, albeit reduced, proportion of free liquor for heating.
Eine Aufgabe der Erfindung ist daher die Bereitstellung eines Verfahrens zur Behandlung von Wäsche in einer Waschmaschine, bei dem gegenüber bekannten Verfahren Energie und/oder Wasser eingespart werden kann.An object of the invention is therefore to provide a method for treating laundry in a washing machine, in which energy and / or water can be saved over known methods.
Eine Aufgabe ist es außerdem, eine für die Durchführung dieses Verfahrens geeignete Waschmaschine aufzuzeigen.It is also an object to provide a washing machine suitable for carrying out this method.
Erfindungsgemäß werden diese Aufgaben durch ein Verfahren mit den Merkmalen des Patentanspruchs 1 und durch eine Waschmaschine mit den Merkmalen des Patentanspruchs 11 gelöst. Bevorzugte Ausgestaltungen der Erfindung sind in den jeweils abhängigen Patentansprüchen aufgeführt. Außerdem entsprechen bevorzugten Ausgestaltungen des Verfahrens bevorzugte Ausgestaltungen der Waschmaschine und umgekehrt, auch wenn darauf hierin nicht im Einzelnen hingewiesen wird.According to the invention, these objects are achieved by a method having the features of patent claim 1 and by a washing machine having the features of patent claim 11. Preferred embodiments of the invention are listed in the respective dependent claims. In addition, preferred embodiments of the method correspond to preferred embodiments of the washing machine and vice versa, even if it is not referred to herein in detail.
Die Erfindung betrifft somit ein Verfahren zur Behandlung von Wäschestücken mit einer wässrigen Waschlauge in einer Waschmaschine mit einem am Boden eines Laugenbehälters angeordneten Laugenablaufsystem, einer drehbar gelagerten Trommel und einer Heizvorrichtung zur direkten Erwärmung einer die Waschlauge enthaltenden Beladungsmenge der Wäschestücke, wobei das Verfahren die Schritte a) Zugabe der Waschlauge zu der Beladungsmenge (a1 ) einer Menge (a2) kleiner oder gleich einer Menge (a3), die zur Sättigung der Wäsche mit Wasser erforderlich istThe invention thus relates to a method for treating items of laundry with an aqueous wash liquor in a washing machine with a lye drainage system arranged at the bottom of a tub, a rotatably mounted drum and a heater for direct heating of a load containing the wash liquor, the method comprising steps a ) Adding the wash liquor to the load (a1) of an amount (a2) less than or equal to an amount (a3) required to saturate the wash with water
(„Sättigungsmenge"), und Benetzen der Wäschestücke; b) direkte Erwärmung der benetzten Wäschestücke durch die Heizvorrichtung; und c) Zugabe von Wasser mit einer Temperatur Tw von höchstens 40 0C zum Ausspülen der("Saturation amount"), and wetting the laundry items b) direct heating of the wetted laundry items by the heating device, and c) adding water with a temperature T w of at most 40 ° C. for rinsing the laundry items
Waschlauge aus den Wäschestücken umfasst.Wash liquor from the laundry includes.
In einer bevorzugten Ausführungsform dieses Verfahrens wird Schritt c) erst nach Beendigung von Schritt b) durchgeführt.In a preferred embodiment of this method, step c) is performed only after completion of step b).
Die Temperatur Twdes Wassers in Schritt c) beträgt vorzugsweise höchstens 30 0C. Bevorzugt erfolgt die direkte Erwärmung der die Waschlauge enthaltenden Wäschestücke mit heißem Schaum, Heißluft, Wasserdampf und/oder elektromagnetischer Strahlung, der/die unter Verwendung der Heizvorrichtung erhalten wurde(n).The temperature T w of the water in step c) is preferably at most 30 ° C. The direct heating of the laundry containing the wash liquor is preferably carried out with hot foam, hot air, water vapor and / or electromagnetic radiation obtained using the heating device (s).
Die Heizvorrichtung zur direkten Erhitzung einer die Waschlauge enthaltenden Beladungsmenge kann in der erfindungsgemäßen Waschmaschine an verschiedenen Stellen angebracht sein. Vorzugsweise ist die Heizvorrichtung in dem Laugenbehälter und insbesondere in der Trommel angeordnet.The heating device for direct heating of a load containing the wash liquor may be attached in different places in the washing machine according to the invention. Preferably, the heating device is arranged in the tub and in particular in the drum.
Im Falle der Erwärmung der benetzten Wäschestücke mit heißem Schaum anschließend an Schritt a) wird der heiße Schaum vorzugsweise durch Rotieren der Trommel mit einer Drehzahl Ui, die kleiner als eine Anlegedrehzahl UA der Wäschestücke ist, erzeugt, die Heizeinrichtung eingeschaltet und der Schaum erhitzt. Die Anlegedrehzahl UA der Wäsche ist die Drehzahl der Trommel, bei der sich die Wäschestücke an eine Innenwand der Trommel anlegen können, beispielsweise eine Drehzahl im Bereich von 300 bis 500 Umdrehungen pro Minute.In the case of heating the wet pieces of hot-foam laundry subsequent to step a), the hot foam is preferably produced by rotating the drum at a speed Ui less than an application speed U A of the laundry, turning on the heater, and heating the foam. The application speed U A of the laundry is the rotational speed of the drum at which the items of laundry can be applied to an inner wall of the drum, for example a speed in the range of 300 to 500 revolutions per minute.
Bei der Erwärmung mit heißem Schaum kann eine direkte Erwärmung der Wäschestücke bewirkt werden. Der Temperaturgradient ist über die Leistung der Heizvorrichtung sowie die Schaumdichte einstellbar. Da in erster Linie die Oberfläche der Wäschestücke erwärmt wird, ist es von Vorteil, wenn die Wäsche intensiv gewendet wird. Dies kann vorteilhaft durch reversierendes Betreiben der Trommel bei einer Drehzahl von 30 bis 100 Umdrehungen pro Minute geschehen.When heating with hot foam direct heating of the laundry items can be effected. The temperature gradient is adjustable via the heater output and the foam density. Since primarily the surface of the laundry is heated, it is advantageous if the laundry is turned intensively. This can advantageously be done by reversing the operation of the drum at a speed of 30 to 100 revolutions per minute.
Die Erwärmung im Schritt b) mittels elektromagnetischer Strahlung wird vorzugsweise durch Verwendung einer Mikrowellenheizung und/oder eines Infrarot-Strahlers („IR-Strahlers") bewirkt.The heating in step b) by means of electromagnetic radiation is preferably effected by using a microwave heating and / or an infrared radiator ("IR radiator").
Bei der Erwärmung mit Mikrowellen ist eine direkte Erwärmung der in den Wäschestücken gebundenen Waschlauge (Tensidlösung) ebenfalls möglich. Der Temperaturgradient ist hierbei über die Mikrowellenleistung einstellbar. Bei der Verwendung einerWhen heating with microwaves, direct heating of the wash liquor bound in the laundry items (surfactant solution) is likewise possible. The temperature gradient is adjustable via the microwave power. When using a
Mikrowellenheizung ist darauf zu achten, dass es zu keinen Kurzschlüssen aufgrund von ggf. in den Wäschestücken vorhandenen metallischen Teilen kommt. Außerdem sind bestimmte Kunstfasern ggf. bei einer Erwärmung mit Mikrowellen nicht stabil. So könnte es beispielsweise bei Nähten aus Polyester zu einer Schädigung von Wäschestücken kommen. Bei der Erwärmung mit einem IR-Strahler ist eine direkte Erwärmung der Wäschestücke ebenfalls möglich. Der Temperaturgradient ist über die Leistung des IR-Strahlers einstellbar. Da insbesondere die Oberfläche der Textilstücke erwärmt wird, ist hierbei eine intensive Umverteilung der Wäschestücke durch reversierendes Betreiben der Trommel von Vorteil.Microwave heating must be ensured that there are no short circuits due to metal parts that may be present in the laundry items. In addition, certain synthetic fibers may not be stable when heated with microwaves. For example, seams made of polyester could cause damage to items of laundry. When heating with an IR emitter direct heating of the laundry is also possible. The temperature gradient is adjustable via the power of the IR emitter. Since in particular the surface of the textile pieces is heated, in this case an intensive redistribution of the laundry items by reversing operation of the drum is advantageous.
Die Erwärmung der benetzten Wäschestücke mit Heißluft hat den Vorteil, dass ein Temperaturgefälle einstellbar ist, wodurch Wärmeverluste verringert werden können.The heating of the wetted laundry with hot air has the advantage that a temperature gradient is adjustable, whereby heat losses can be reduced.
Zur Erzeugung von Heißluft kann prinzipiell eine aus einem Wäschetrockner bekannte Heizung verwendet werden. Die Verwendung von Heißluft ist daher besonders vorteilhaft bei einem Kombinationsgerät, das die Funktion einer Waschmaschine mit der eines Wäschetrockners vereint.In principle, a heater known from a tumble dryer can be used to generate hot air. The use of hot air is therefore particularly advantageous in a combination device that combines the function of a washing machine with that of a tumble dryer.
Bei der Erwärmung mit Heißdampf kann die Luft bei der angewandten Temperatur mit Wasserdampf gesättigt (Sattdampf) oder ungesättigt sein. Der Vorteil der Verwendung von Heißdampf besteht in einem verbesserten Wärmeübergang zwischen einer Heizung und Wasser.When heated with superheated steam, the air at the temperature used saturated with saturated steam (saturated steam) or unsaturated. The advantage of using superheated steam is improved heat transfer between a heater and water.
Im erfindungsgemäßen Verfahren wird die Trommel im Schritt b) vorzugsweise während eines Zeitraums von 10 bis 30 Minuten bei einer Drehzahl von 30 bis 100 Umdrehungen proIn the process of the invention, the drum in step b) is preferably for a period of 10 to 30 minutes at a speed of 30 to 100 revolutions per
Minute, besonders bevorzugt 40 bis 70 Umdrehungen pro Minute reversierend betrieben.Minute, particularly preferably 40 to 70 revolutions per minute reversing operated.
Hierdurch wird insbesondere eine gute Umverteilung der Wäschestücke erzielt, so dass dieAs a result, in particular a good redistribution of the laundry items is achieved, so that the
Erwärmung der benetzten Wäschestücke, die im Allgemeinen an deren Oberfläche stattfindet, aufgrund der verbesserten Zugänglichkeit der Oberfläche möglichst gleichmäßig erfolgen kann.Heating the wetted laundry, which generally takes place on the surface, due to the improved accessibility of the surface can be carried out as uniformly as possible.
Im Schritt c) kann der im Schritt b) im Wesentlichen nur angelöste, noch in den Wäschestücken verbliebene Schmutz ausgespült werden.In step c), in step b) substantially only loosened dirt still remaining in the laundry items can be rinsed out.
Mit Ablauf von Schritt c) ist im Allgemeinen der eigentliche Waschvorgang beendet. Im weiteren Programmablauf können die Wäschestücke dann wie in einem herkömmlichen Waschprogramm gespült und geschleudert werden.With the end of step c), the actual washing process is generally completed. In the further program sequence, the laundry items can then be rinsed and spun as in a conventional washing program.
Beim erfindungsgemäßen Verfahren enthalten die Wäschestücke der Beladungsmenge höchstens die für die Sättigung der Wäschestücke mit Waschlauge erforderliche Menge an Wasser. Vorzugsweise liegt das Verhältnis der Menge (a2) zur Menge (a3) im Bereich von 0,5 bis 0,9. Bei Verwendung von heißem Dampf im Schritt b) liegt das Verhältnis der Menge (a2) zur Menge (a3) vorzugsweise im Bereich von 0,5 bis 0,7.In the method according to the invention, the laundry items contain at most the amount of water required for the saturation of the laundry items with wash liquor. Preferably, the ratio of the amount (a2) to the amount (a3) is in the range of 0.5 to 0.9. When using hot steam in step b), the ratio of the amount (a2) to the amount (a3) is preferably in the range of 0.5 to 0.7.
Beispielsweise könnte bei einer Beladungsmenge (a1 ) von 6 kg mit Wäsche aus Baumwollgewebe eine Wassermenge (a2) von 10 Liter (beispielsweise 8 Liter bei Verwendung von Wasserdampf) eingesetzt werden.For example, with a loading amount (a1) of 6 kg with cotton fabric laundry, an amount of water (a2) of 10 liters (for example, 8 liters using steam) could be used.
Bei Baumwollgewebe beträgt die Sättigungsmenge (a3) an Wasser ungefähr das Doppelte einer Beladungsmenge (a1 ). Bei Kunstfasern, welche Wasser in geringerem Umfang absorbieren, kann die Sättigungsmenge (a3) deutlich geringer sein. Die Werte für die Sättigungsmenge (a3) sind an sich bekannt, so dass die Wassermenge (a2) in einem Waschprogramm vorgegeben werden kann.For cotton fabric, the saturation amount (a3) of water is about twice a loading amount (a1). For synthetic fibers, which absorb water to a lesser extent, the saturation amount (a3) may be significantly lower. The values for the saturation amount (a3) are known per se, so that the amount of water (a2) can be specified in a wash program.
Hierbei kann die Beladungsmenge (a1 ) ggf. durch eine an sich bekannte Maßnahme ermittelt werden. Vorteilhaft wird daher im erfindungsgemäßen Verfahren ein erster Sensor zur Bestimmung der Menge einer im Laugenbehälter befindlichen Flüssigkeit oder eines Schaums verwendet, dessen Sensorsignal während des Verfahrens verfolgt werden kann.If necessary, the loading quantity (a1) can be determined by a measure known per se. Advantageously, therefore, in the method according to the invention, a first sensor is used to determine the amount of liquid or foam in the tub, the sensor signal of which can be tracked during the process.
Zur Bestimmung der Beladungsmenge (a1 ) kann beispielsweise im Verfahrensschritt a) ein mit Hilfe des ersten Sensors gemessener hydrostatischer Druck p mit der eingefüllten Menge an Wasser oder Waschlauge verglichen werden. Die in der Trommel befindliche Wäsche saugt Wasser oder Waschlauge auf, das bzw. die daher nicht zu einer Erhöhung des hydrostatischen Drucks beitragen kann. Durch den Vergleich des gemessenen hydrostatischen Drucks p und/oder des zeitlichen Gradienten des hydrostatischen Druckes p mit entsprechenden in einer Programmsteuerung einer Waschmaschine gespeicherten Werten für die Durchfeuchtung von Wäsche lässt sich der Wäscheposten (Beladungsmenge (a1 )) und sein Durchfeuchtungsgrad (Benetzungsgrad) ermitteln. Im Ergebnis kann die Dauer einer Benetzung in Schritt a) sehr genau auf den vorgegebenen Wäscheposten abgestimmt werden. Damit wird im Allgemeinen einem Programm eine für das erfindungsgemäße Verfahren ausreichende Benetzung des Wäschepostens signalisiert, so dass Schritt a) beendet ist und Schritt b) begonnen werden kann. Beim erfindungsgemäßen Verfahren ist die Überwachung einer Temperatur in der Trommel vorteilhaft. Hierzu ist vorzugsweise in der Waschmaschine ein zweiter Sensor zur Bestimmung der Temperatur in der Trommel angeordnet.To determine the loading amount (a1), for example, in method step a), a hydrostatic pressure p measured with the aid of the first sensor can be compared with the amount of water or wash liquor charged. The laundry located in the drum absorbs water or washing liquor, which can therefore not contribute to an increase in the hydrostatic pressure. By comparing the measured hydrostatic pressure p and / or the temporal gradient of the hydrostatic pressure p with corresponding values stored in a program control of a washing machine for the moistening of laundry, the amount of laundry (loading quantity (a1)) and its degree of moisture penetration (degree of wetting) can be determined. As a result, the duration of wetting in step a) can be matched very precisely to the predetermined amount of laundry. Thus, in general, a program for the inventive method sufficient wetting of the laundry cost is signaled to a program, so that step a) is completed and step b) can be started. In the method according to the invention, the monitoring of a temperature in the drum is advantageous. For this purpose, a second sensor for determining the temperature in the drum is preferably arranged in the washing machine.
Die Menge an im erfindungsgemäßen Verfahren einzusetzendem Wasser bzw. Waschlauge kann zusätzlich dadurch verringert werden, dass während der Schritte a) und/oder b) die Trommel mit einer hohen Drehzahl gedreht wird. Hierbei wird ggf. in den Wäschestücken enthaltendes Wasser/Waschlauge abgeschleudert und eine Verringerung der zur Sättigung erforderlichen Menge an Wasser bzw. Waschlauge erreicht.The amount of water or wash liquor to be used in the process according to the invention can additionally be reduced by rotating the drum at high speed during steps a) and / or b). In this case, if necessary, the water / wash liquor contained in the laundry items is thrown off and a reduction in the amount of water or wash liquor required for saturation is achieved.
Gegenstand der Erfindung ist außerdem eine Waschmaschine mit einer Programmsteuerung zur Steuerung eines Programmablaufs, einer in einem Laugenbehälter drehbar gelagerten Trommel, einem am Boden des Laugenbehälters angeordneten Laugenablaufsystem, und einem Antriebsmotor für die Trommel, wobei die Waschmaschine zusätzlich eine Heizvorrichtung zur direkten Erhitzung einer die Waschlauge enthaltenden Beladungsmenge (a1 ) mit Wäschestücken aufweist.The invention also relates to a washing machine with a program control for controlling a program sequence, a rotatably mounted in a tub drum, a bottom of the tub arranged Laugenablaufsystem, and a drive motor for the drum, the washing machine additionally a heater for direct heating of a wash liquor containing loading amount (a1) with laundry.
Bei der Heizvorrichtung handelt es sich in einer ersten bevorzugten Ausführungsform um eine Vorrichtung zur Erzeugung von Wasserdampf oder Heißluft. In einer zweiten bevorzugten Ausführungsform handelt es sich bei der Heizvorrichtung um ein Mikrowellenheizgerät und/oder einen IR-Strahler.The heating device is in a first preferred embodiment, a device for generating steam or hot air. In a second preferred embodiment, the heating device is a microwave heater and / or an IR radiator.
Vorzugsweise befindet sich in der erfindungsgemäßen Waschmaschine ein erster Sensor zur Bestimmung einer Menge einer im Laugenbehälter befindlichen Flüssigkeit und ggf. Schaum, wobei das Sensorsignal während des Verfahrens vorzugsweise verfolgt werden kann.Preferably, in the washing machine according to the invention a first sensor for determining a quantity of a liquid present in the tub and possibly foam, wherein the sensor signal can be preferably tracked during the process.
Es ist überdies bevorzugt, wenn in der erfindungsgemäßen Waschmaschine ein zweiter Sensor zur Bestimmung einer Temperatur in der Trommel angeordnet.It is furthermore preferred if, in the washing machine according to the invention, a second sensor for determining a temperature in the drum is arranged.
Die Erfindung hat den Vorteil, dass gegenüber herkömmlichen Verfahren eine deutlich geringere Menge an Wasser bzw. Waschlauge erwärmt wird. Diese Menge entspricht im Wesentlichen der zur Sättigung der Wäschestücke notwendigen Menge, welche durch geeignete schnelle Drehung der Trommel während des Erwärmens noch reduziert werden kann. Hierdurch ist eine deutliche Einsparung von Wasser und Energie möglich. Ein Ausführungsbeispiel der Erfindung wird im Folgenden anhand der Figur 1 näher beschrieben.The invention has the advantage that compared to conventional methods, a significantly lower amount of water or wash liquor is heated. This amount corresponds essentially to the amount necessary for saturating the laundry items, which can still be reduced by appropriate rapid rotation of the drum during heating. As a result, a significant saving of water and energy is possible. An embodiment of the invention will be described in more detail below with reference to FIG 1.
Figur 1 ist eine schematische Darstellung der für die nachfolgende Beschreibung relevanten Teile einer Ausführungsform einer Waschmaschine, in der ein Verfahren wie oben beschrieben durchgeführt werden kann. Andere Ausführungsformen sind denkbar.Figure 1 is a schematic representation of the parts relevant to the following description of an embodiment of a washing machine in which a method as described above can be carried out. Other embodiments are conceivable.
Die Waschmaschine der in Figur 1 gezeigten Ausführungsform weist einen Laugenbehälter 1 auf, in dem eine Trommel 2 drehbar gelagert und durch einen Antriebsmotor 14 betrieben werden kann. Die Drehachse 3 der Trommel 2 ist aus der Horizontalen um einen kleinen Winkel (z.B. 13°) nach vorne oben gerichtet, so dass man einen leichteren Zugang und Einblick in das Innere der Trommel 2 hat. Wäschemitnehmer 4 ermöglichen eine Umverteilung der Wäschestücke 7 bei der Drehung der Trommel 2. Schöpfeinrichtungen 5 ermöglichen eine intensive Spülung der gereinigten Wäschestücke 7 mit Wasser 6.The washing machine of the embodiment shown in Figure 1 comprises a tub 1, in which a drum 2 rotatably mounted and can be operated by a drive motor 14. The axis of rotation 3 of the drum 2 is directed from the horizontal by a small angle (e.g., 13 °) forwardly upwards, so as to provide easier access and insight into the interior of the drum 2. Wäschemitnehmer 4 allow redistribution of the laundry items 7 during rotation of the drum 2. scooping devices 5 allow intensive rinsing of the cleaned laundry items 7 with water. 6
Bei der in Figur 1 gezeigten Ausführungsform befindet sich eine Heizvorrichtung 16 außerhalb von Laugenbehälter 1 und Trommel 2. Die in Figur 1 gezeigte Heizvorrichtung 16 kann insbesondere Heißluft oder Wasserdampf zur Verfügung stellen.In the embodiment shown in FIG. 1, a heating device 16 is located outside of the tub 1 and the drum 2. The heating device 16 shown in FIG. 1 can in particular provide hot air or water vapor.
Alternativ kann ein in Schritt b) des oben beschriebenen Verfahrens ggf. eingesetzter und durch Drehen der Trommel 2 mit den Wäschestücken 7 erzeugter Schaum über eine am Boden des Laugenbehälters 1 angeordnete Heizvorrichtung 13 erhitzt werden. Beim Drehen der Trommel wird die Waschlauge teilweise aus den Wäschestücken 7 abgeschleudert und derart intensiv mit Luft durchmischt, wobei Schaum entsteht. Auch kann die sich drehende Trommel 2 in Waschlauge, die unterhalb der Trommel 2 im Laugenbehälter 1 steht, Luft eintragen und somit Schaum hervorrufen. Die Bildung von Schaum kann durch Beigabe eines entsprechenden Waschmittels zur Waschlauge unterstützt werden.Alternatively, a foam optionally used in step b) of the process described above and produced by rotating the drum 2 with the laundry items 7 can be heated via a heating device 13 arranged at the bottom of the liquor container 1. When turning the drum, the wash liquor is partially thrown off the laundry 7 and so intensively mixed with air, whereby foam is formed. Also, the rotating drum 2 in the wash liquor, which is below the drum 2 in the tub 1, enter air and thus cause foam. The formation of foam can be assisted by adding a corresponding detergent to the wash liquor.
Die Waschmaschine der Fig. 1 weist zudem ein Laugenzulaufsystem 8, 9, 10 auf, das eine Wasseranschlussarmatur für das Hauswassernetz 8, ein elektrisch steuerbares Ventil 9 und eine Zuleitung 10 zum Laugenbehälter 1 umfasst, die gegebenenfalls auch über eineThe washing machine of Fig. 1 also has a liquor inlet system 8, 9, 10, which comprises a water connection fitting for the domestic water network 8, an electrically controllable valve 9 and a supply line 10 to the tub 1, which may also have a
Waschmitteleinspüleinrichtung („Einspülschale") 11 geführt sein kann, aus der dasWaschmitteleinspüleinrichtung ("Einspülschale") 11 may be guided, from which the
Zulaufwasser ein dort vorgelegtes Waschmittel in den Laugenbehälter 1 transportieren kann.Inlet water can transport there presented detergent in the tub 1.
Das Ventil 9 wie auch die Heizeinrichtung 13 können durch eine Steuereinrichtung („Programmsteuerung") 12 in Abhängigkeit von einem Programmablaufplan gesteuert werden, der an ein Zeitprogramm und/oder an das Erreichen von gewissen Messwerten von Parametern wie Drehzahl der Trommel 2 innerhalb der Waschmaschine gebunden sein kann.The valve 9 as well as the heater 13 may be controlled by a controller ("program control") 12 in response to a program flowchart that corresponds to a timer program and / or to the achievement of certain measurements of Parameters such as speed of the drum 2 may be bound within the washing machine.
Ein Laugenablaufsystem 18 mit allfällig nötigen Leitungen sowie Ablaufventil und Laugenpumpe ist, da an sich bekannt, der Übersicht halber nur schematisch als Pfeil dargestellt.A lye drain system 18 with any necessary lines and drain valve and drain pump is, as is known, the sake of clarity only shown schematically as an arrow.
Ein erster Sensor 15 für die Messung des hydrostatischen Druckes p ist im Laugenbehälter 1 vorgesehen. Es ist zudem ein zweiter Sensor 17 zur Bestimmung einer Temperatur in der Trommel 2 angeordnet. Der zweite Sensor 17 kann sich allerdings auch in einem Zwischenraum zwischen dem Laugenbehälter 1 und der Trommel 2 befinden.A first sensor 15 for the measurement of the hydrostatic pressure p is provided in the tub 1. In addition, a second sensor 17 for determining a temperature in the drum 2 is arranged. However, the second sensor 17 may also be located in a space between the tub 1 and the drum 2.
In der hier gezeigten Ausführungsform wird im Schritt a) des oben beschriebenen Verfahrens zum Behandeln der Wäschestücke 7 Wasser in einer Menge eingeführt, die ausreicht, dass ein Raum zwischen dem Laugenbehälter 1 und der Trommel 2 an einem unteren Ende der Trommel mit Wasser gefüllt ist und die Wäschestücke 7 benetzen kann. Diese Waschlauge wird nach und nach von den Wäschestücken 7 aufgenommen, bis diese bis zu ihrer Sättigung benetzt sind. Mehr Waschlauge oder Wasser muss nicht zugegeben werden. Das Beheizen der Wäschestücke 7 mit der darin gebundenen Waschlauge erfolgt direkt und ohne Vermittlung durch einen nicht gebundenen Rest von Waschlauge. Dabei werden Verschmutzungen in den Wäschestücken 7 zunächst gelöst, aber noch nicht vollständig ausgeschwemmt. Dies erfolgt erst in einem nachfolgenden Schritt durch zusätzlich zugegebenes, nicht oder jedenfalls nicht sehr hoch erwärmtes Wasser, welches nicht mehr zum Lösen der Verschmutzungen beitragen muss, sondern nur noch zu ihrem Ausspülen aus den Wäschestücken 7. Dazu genügt eine vergleichsweise geringe Temperatur von höchstens 400C, womöglich sogar nur höchstens 300C. Die erforderliche Heizenergie ist also sehr gering, da Heizenergie in erster Linie nur für die in den zu behandelnden Wäschestücken 7 gebundene Flotte aufgewendet werden muss. In the embodiment shown here, in step a) of the above-described method for treating the laundry 7, water is introduced in an amount sufficient to fill a space between the tub 1 and the drum 2 at a lower end of the drum with water and can wet the laundry 7. This wash liquor is gradually absorbed by the laundry items 7 until they are wetted to saturation. More wash or water does not have to be added. The heating of the laundry items 7 with the washing liquor bound therein is carried out directly and without mediation by an unbound residue of washing liquor. This contamination in the laundry items 7 are initially solved, but not completely washed out. This is done only in a subsequent step by additionally added, not or at least not very highly heated water, which no longer has to contribute to solving the contaminants, but only to their rinsing from the laundry 7. For this purpose, a comparatively low temperature of at most 40 is sufficient 0 C, possibly even only at most 30 0 C. The required heating energy is therefore very low, since heating energy must be spent in the first place only for the bound in the laundry items 7 liquor to be treated.

Claims

Patentansprüche claims
1. Verfahren zur Behandlung von Wäschestücken (7) mit einer wässrigen Waschlauge in einer Waschmaschine mit einem am Boden eines Laugenbehälters (1 ) angeordneten Laugenablaufsystem (18), einer drehbar gelagerten Trommel (2) und einer1. A method for treating laundry items (7) with an aqueous wash liquor in a washing machine with a at the bottom of a tub (1) arranged Laugenablaufsystem (18), a rotatably mounted drum (2) and a
Heizvorrichtung (13, 16) zur direkten Erhitzung einer die Waschlauge enthaltenden Beladungsmenge (a1 ) der Wäschestücke (7), dadurch charakterisiert, dass es die Schritte a) Zugabe der Waschlauge zu der Beladungsmenge (a1 ) in einer Menge (a2) kleiner oder gleich einer Menge (a3), die zur Sättigung der Wäschestücke (7) mit Wasser erforderlich ist („Sättigungsmenge"), und Benetzen der Wäschestücke (7); b) Erwärmung der benetzten Wäschestücke (7) durch die Heizvorrichtung (13, 16); und c) Zugabe von Wasser mit einer Temperatur Tw von höchstens 40 0C zum Ausspülen der Waschlauge aus den Wäschestücken (7) umfasst.A heating device (13, 16) for directly heating a loading amount (a1) of the laundry items (7) containing the wash liquor, characterized in that it comprises the steps of a) adding the wash liquor to the loading amount (a1) in an amount (a2) less than or equal to an amount (a3) required to saturate the laundry items (7) with water ("saturation amount"), and wetting the laundry items (7); b) heating the wetted laundry items (7) by the heating device (13, 16); and c) adding water having a temperature T w of at most 40 0 C for rinsing the wash liquor from the laundry items (7).
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass Schritt c) erst nach Beendigung von Schritt b) durchgeführt wird.2. The method according to claim 1, characterized in that step c) is performed only after completion of step b).
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Temperatur Tw des Wassers in Schritt c) höchstens 30 0C beträgt.3. The method according to claim 1 or 2, characterized in that the temperature T w of the water in step c) is at most 30 0 C.
4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die direkte Erwärmung der die Waschlauge enthaltenden Wäschestücke (7) mit heißem Schaum, Heißluft, Wasserdampf und/oder elektromagnetischer Strahlung erfolgt, der/die unter Verwendung der Heizvorrichtung (13, 16) erhalten wurde(n).4. The method according to any one of claims 1 to 3, characterized in that the direct heating of the washing liquor containing laundry items (7) with hot foam, hot air, water vapor and / or electromagnetic radiation takes place, the / using the heating device (13, 16) was obtained.
5. Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass die benetzten Wäschestücke (7) mit heißem Schaum erwärmt werden, anschließend an Schritt a) der heiße Schaum durch Rotieren der Trommel mit einer Drehzahl Ui, die kleiner als eine Anlegedrehzahl UA der Wäsche ist, erzeugt wird, die Heizeinrichtung (13, 16) eingeschaltet und der Schaum erwärmt wird.5. The method according to any one of claims 1 to 4, characterized in that the wetted laundry items (7) are heated with hot foam, followed by step a) the hot foam by rotating the drum at a speed Ui, which is smaller than a contact speed U A is the laundry is generated, the heater (13, 16) is turned on and the foam is heated.
6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Erwärmung im Schritt b) mittels elektromagnetischer Strahlung durch Verwendung einer Mikrowellenheizung (16) oder eines IR-Strahlers (16) bewirkt wird. 6. The method according to any one of claims 1 to 5, characterized in that the heating in step b) by means of electromagnetic radiation by using a microwave heater (16) or an IR radiator (16) is effected.
7. Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Trommel (2) im Schritt b) während eines Zeitraums von 10 bis 30 Minuten bei einer Drehzahl von 30 bis 100 Umdrehungen pro Minute reversierend betrieben wird.7. The method according to any one of claims 1 to 6, characterized in that the drum (2) is reversely operated in step b) for a period of 10 to 30 minutes at a rotational speed of 30 to 100 revolutions per minute.
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8. Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass ein Verhältnis der Menge (a2) zur Menge (a3) zwischen 0,5 und 0,9 liegt.8. The method according to any one of claims 1 to 7, characterized in that a ratio of the amount (a2) to the amount (a3) is between 0.5 and 0.9.
9. Verfahren nach Anspruch 8, dadurch gekennzeichnet, dass die Wäschestücke (7) 10 durch heißen Dampf erwärmt werden und im Schritt b) das Verhältnis der Menge (a2) zur Menge (a3) zwischen 0,5 und 0,7 liegt.9. The method according to claim 8, characterized in that the laundry items (7) 10 are heated by hot steam and in step b) the ratio of the amount (a2) to the amount (a3) is between 0.5 and 0.7.
10. Waschmaschine mit einer Programmsteuerung (12) zur Steuerung des Programmablaufs, einer in einem Laugenbehälter (1 ) drehbar gelagerten Trommel (2),10. Washing machine with a program control (12) for controlling the program sequence, a drum (2) rotatably mounted in a tub (1),
15 einem am Boden des Laugenbehälters (1 ) angeordneten Laugenablaufsystem (18) und einem Antriebsmotor (14) für die Trommel (2), dadurch gekennzeichnet, dass die Waschmaschine eine Heizvorrichtung (13, 16) zur direkten Erhitzung einer die Waschlauge enthaltenden Beladungsmenge (a1 ) von Wäschestücken (7) aufweist.15 a at the bottom of the tub (1) arranged Laugenablaufsystem (18) and a drive motor (14) for the drum (2), characterized in that the washing machine is a heater (13, 16) for directly heating a load containing the wash liquor (a1 ) of laundry items (7).
20 11. Waschmaschine nach Anspruch 10, dadurch gekennzeichnet, dass es sich bei der Heizvorrichtung (13, 16) um eine Vorrichtung (16) zur Erzeugung von Wasserdampf oder Heißluft handelt.11. Washing machine according to claim 10, characterized in that the heating device (13, 16) is a device (16) for generating steam or hot air.
12. Waschmaschine nach Anspruch 10, dadurch gekennzeichnet, dass es sich bei der 25 Heizvorrichtung (13, 16) um ein Mikrowellenheizgerät (16) und/oder einen IR-Strahler12. Washing machine according to claim 10, characterized in that it is in the 25 heating device (13, 16) to a microwave heater (16) and / or an IR radiator
(16) handelt.(16).
13. Waschmaschine nach einem der Ansprüche 10 bis 12, dadurch gekennzeichnet, dass die Heizvorrichtung (13, 16) in dem Laugenbehälter (1 ) angeordnet ist, insbesondere13. Washing machine according to one of claims 10 to 12, characterized in that the heating device (13, 16) in the tub (1) is arranged, in particular
30 in der Trommel (2).30 in the drum (2).
14. Waschmaschine nach einem der Ansprüche 10 bis 13, dadurch gekennzeichnet, dass ein zweiter Sensor (17) zur Bestimmung einer Temperatur in der Trommel (2) angeordnet ist.14. Washing machine according to one of claims 10 to 13, characterized in that a second sensor (17) for determining a temperature in the drum (2) is arranged.
35 35
EP08760070.6A 2007-06-20 2008-05-27 Method for the treatment of laundry, and washing machine suitable for this purpose Active EP2158350B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL08760070T PL2158350T3 (en) 2007-06-20 2008-05-27 Method for the treatment of laundry, and washing machine suitable for this purpose

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007028212.7A DE102007028212B4 (en) 2007-06-20 2007-06-20 Process for treating items of laundry and washing machine suitable for this purpose
PCT/EP2008/056472 WO2008155196A2 (en) 2007-06-20 2008-05-27 Method for the treatment of laundry, and washing machine suitable for this purpose

Publications (2)

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EP2158350A2 true EP2158350A2 (en) 2010-03-03
EP2158350B1 EP2158350B1 (en) 2018-07-11

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US (1) US20100235999A1 (en)
EP (1) EP2158350B1 (en)
CN (1) CN101711295B (en)
DE (1) DE102007028212B4 (en)
EA (1) EA017035B1 (en)
ES (1) ES2686139T3 (en)
PL (1) PL2158350T3 (en)
WO (1) WO2008155196A2 (en)

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Also Published As

Publication number Publication date
DE102007028212A1 (en) 2008-12-24
WO2008155196A3 (en) 2009-02-19
EA201070016A1 (en) 2010-06-30
US20100235999A1 (en) 2010-09-23
EA017035B1 (en) 2012-09-28
PL2158350T3 (en) 2019-02-28
WO2008155196A2 (en) 2008-12-24
CN101711295A (en) 2010-05-19
DE102007028212B4 (en) 2022-03-24
CN101711295B (en) 2014-11-05
ES2686139T3 (en) 2018-10-16
EP2158350B1 (en) 2018-07-11

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