EP2740827B1 - Lave-linge doté d'un générateur vapeur et son procédé d'utilisation - Google Patents

Lave-linge doté d'un générateur vapeur et son procédé d'utilisation Download PDF

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Publication number
EP2740827B1
EP2740827B1 EP12401243.6A EP12401243A EP2740827B1 EP 2740827 B1 EP2740827 B1 EP 2740827B1 EP 12401243 A EP12401243 A EP 12401243A EP 2740827 B1 EP2740827 B1 EP 2740827B1
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EP
European Patent Office
Prior art keywords
water
steam
washing
program
descaling
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.)
Active
Application number
EP12401243.6A
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German (de)
English (en)
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EP2740827A1 (fr
Inventor
Michael Finke
Hartmut Linnemann
Dirk Sieding
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.)
Miele und Cie KG
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Miele und Cie KG
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Priority to EP12401243.6A priority Critical patent/EP2740827B1/fr
Publication of EP2740827A1 publication Critical patent/EP2740827A1/fr
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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 
    • D06F39/40—Steam generating 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
    • 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 
    • 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
    • D06F2103/18—Washing liquid level
    • 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
    • D06F2105/02—Water supply

Definitions

  • the invention relates to a method for operating a washing machine, in particular a drum washing machine according to the preamble of claim 1 and a washing machine for carrying out the method according to the preamble of claim 5.
  • EP 2 402 498 A1 It is known to use a steam generating device, which is fed directly from the fresh water supply and in which the fresh water supplied in a storage tank is heated by a heater for the purpose of generating steam. The generated steam is then blown into the laundry drum to be able to act on the laundry contained therein.
  • the available fresh water contains more or less shares of various hardnesses.
  • the lime dissolved in the water can precipitate after heating the water and precipitate on heating devices or on parts that come into contact with the water. Therefore, there is a big problem with washing machines with a steam generating device in the aforementioned manner is that form in the course of time considerable limescale in the steam generator. A removal of these residues is extremely difficult and is only associated with a very high cost. In extreme cases, the steam generator can even become unusable.
  • EP 2 381 029 A1 It is also known to use in a washing machine, the existing for the heating of the wash water heater for the production of steam.
  • the radiator of the machine is just flooded and the water around the radiator heated so much that steam can occur. Due to the natural buoyancy of this steam can then get into the laundry drum and in contact with the laundry. In this way, although a certain smoothing effect for the laundry can be effected, but this is not as pronounced as in the direct injection of steam into the washing drum.
  • the EP 2 604 739 A1 (Prior art according to Art 54 (3) EPC) discloses a washing machine having a heating device for heating the washing water and a steam generating device for supplying steam into the washing drum, and a method for operating such a washing machine.
  • the invention thus raises the problem of providing for a washing machine a method by which the calcification in the steam generating unit is prevented or at least is reduced to a degree, which can extend the life of the steam generating unit significantly.
  • washing machine 1 Via the fresh water connection 2, water can be supplied via the detergent dispenser 3 and the connection line 2. 1 into the suds container of the washing machine 1.
  • the drum washing machine shown here has a washing drum 5 for receiving the laundry.
  • control panel the switching and display elements of the washing machine are symbolically indicated, as well as the program control unit 14, which controls the washing programs and the entire program sequence in the washing machine 1.
  • the heater 6 is arranged, via which the introduced fresh water can be heated.
  • the heating process is controlled in a known manner by a temperature sensor, not shown here.
  • the water levels in the washing machine are controlled by the pressure switch 13 in conjunction with the program control unit 14 and can vary depending on the program Levels are set.
  • the pressure switch 13 is connected in the region of the water outlet 17 via a so-called air trap to the tub.
  • a level 17 is symbolized, in which the heater 6 is barely covered with water.
  • This level is set when a so-called smoothing program is to be performed.
  • the water is heated to such an extent that steam or moisture-enriched air can form.
  • This air-vapor mixture can then ascend into the washing drum 5 and come into contact with the laundry.
  • This measure certain smoothing effects or energy savings can be achieved.
  • This type of steam generation can be used in different program sequences. After completion of this done in the lower part of the machine steam generation then the heated, remaining in the tub water can then be supplied to the steam generator 7 to serve here for the generation of steam.
  • a ball valve 16 is shown, which closes the tub in the usual way as a check valve against the subsequent sewer system.
  • the wastewater can be pumped through the drain hose 15 to the outside.
  • the pump unit 10 is designed here as a two-way pump, which can be switched once as a drain pump and the other as a circulation pump. Of course, two separate pumps can also be used.
  • the indicated in the lower sewage path filter device 11 may be provided in addition to the usual lint filter to filter out any suspended and foreign matter from the water can.
  • the pressure switch 13 regulates the water level to the level 17 shown in the drawing. This water level is measured so that the radiator of the heater 6 is at least covered with water. Subsequently, the heater 6 is turned on and the water is heated to a temperature in order to cause both steam and on the other hand to cause the precipitation of lime.
  • the temperature range in question is 60 ° to 90 ° C.
  • the heated water from the pump unit 10 can be pumped into the steam generating device 7, where it is then available for steam generation. From there, the steam is then blown into the washing drum 5 for intensive steam treatment.
  • the heating process and the formation of steam by the heating device 6 can - depending on need - be controlled in time. It can be done via the pressure switch 13 and an additional adjustable minimum level refueling of fresh water when the level drops below the surface of the radiator.
  • a descaling program can now also advantageously be carried out.
  • a descaling agent is introduced into the Waschstoffein Textilkasten 3, which is flushed via the fresh water supply 2 into the tub.
  • the liquid added with the descaling agent is then heated by the heating device 6 to a temperature value set according to the program and can then be pumped into the steam generating unit 7 via the pump unit 10. From here, then enriched with the descaling rinse water passes back into the tub 4. In the circulation process, this process can be maintained as needed until the rinse water with the descaling has its effect on both the heater 6 and the steam generator 7 has met.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detail Structures Of Washing Machines And Dryers (AREA)
  • Control Of Washing Machine And Dryer (AREA)

Claims (7)

  1. Procédé de fonctionnement d'une machine à laver, en particulier d'une machine à laver à tambour, avec un tambour de lavage destiné à recevoir le linge à laver, un dispositif d'acheminement pour l'eau fraîche, une cuve de lessivage destinée à recevoir l'eau de lavage et de rinçage, un dispositif de chauffage pour le chauffage de l'eau de lavage et de rinçage dans la cuve de lessivage, un dispositif de production de vapeur pour l'acheminement de vapeur dans le tambour de lavage, un dispositif de pompage pour évacuer par pompage l'eau usée une fois achevé le processus de lavage, un capteur de niveau d'eau pour la régulation et la commande des niveaux d'eau prévus par programmes dans la machine,
    et avec un dispositif de commande de programmes pour la commande des programmes de lavage et des déroulements de programmes,
    caractérisé
    en ce que le dispositif de production de vapeur (7) est alimenté en eau pour la génération de vapeur qui a été chauffée par le dispositif de chauffage (6) disposé dans la cuve de lessivage (4) au moins à une température qui suffit pour provoquer la précipitation d'agents de dureté dissous dans l'eau, en particulier du calcaire.
  2. Procédé de fonctionnement d'une machine à laver selon la revendication 1, caractérisé
    en ce qu'une quantité d'eau prédéfinie est acheminée à la cuve de lessivage (4) jusqu'à un niveau (17) auquel l'élément chauffant (6) est entouré d'eau,
    en ce que cette quantité d'eau est chauffée à une température à laquelle de la vapeur est produite et cette vapeur peut par force ascensionnelle parvenir dans le linge situé dans le tambour de lavage (5),
    en ce que l'eau résiduelle chauffée après ce traitement à la vapeur et demeurant dans la cuve de lessivage (4) est, au moyen d'un dispositif de pompage (10), acheminée au dispositif de production de vapeur (7) en vue de la génération de vapeur,
    et en ce que la vapeur produite avec cette eau dans le dispositif de production de vapeur (7) est conduite dans le tambour de lavage (5).
  3. Procédé de fonctionnement d'une machine à laver selon la revendication 2, caractérisé
    en ce que la quantité d'eau prédéfinie et le niveau d'eau s'installant de ce fait dans la cuve de lessivage (4) sont surveillés et commandés par un pressostat (13),
    et en ce que le pressostat (13) provoque le réapprovisionnement en eau fraîche quand le niveau de l'eau descend au-dessous de la surface du dispositif de chauffage (6).
  4. Procédé de fonctionnement d'une machine à laver selon l'une des revendications précédentes 1 à 3,
    caractérisé
    en ce que, après une période pouvant être prédéfinie de traitement à la vapeur dans la machine à laver ou une fois atteint un nombre défini de traitements à la vapeur, il est réalisé un programme de détartrage, lequel comprend
    - l'acheminement d'un agent détartrant dans le bac d'introduction des produits de lavage et l'introduction dans la cuve de lessivage (4),
    - le chauffage de la solution détartrante par le dispositif de chauffage (6) dans la cuve de lessivage,
    - le transfert par pompage de la solution détartrante chauffée via le dispositif de production de vapeur,
    - l'enlèvement par pompage de la solution détartrante,
    - l'amenée d'une quantité prédéfinie d'eau fraîche et le transfert par pompage de cette quantité d'eau fraîche via le dispositif de production de vapeur pour l'évacuation de résidus de détartrage,
    - l'enlèvement par pompage de l'eau de rinçage après l'évacuation des résidus de détartrage dans le réseau des eaux usées.
  5. Machine à laver pour la réalisation du procédé selon la revendication 1,
    avec un tambour de lavage destiné à recevoir le linge à laver, un dispositif d'acheminement pour l'eau fraîche, une cuve de lessivage destinée à recevoir l'eau de lavage et de rinçage, un dispositif de chauffage pour le chauffage de l'eau de lavage et de rinçage dans la cuve de lessivage, un dispositif de production de vapeur pour l'acheminement de vapeur dans le tambour de lavage, un dispositif de pompage pour évacuer par pompage l'eau usée une fois achevé le processus de lavage, un capteur de niveau d'eau pour la régulation et la commande des niveaux d'eau prévus par programmes dans la machine,
    et avec un dispositif de commande de programmes pour la commande des programmes de lavage et des déroulements de programmes,
    caractérisée en ce que
    l'amenée d'eau dans la cuve de lessivage (4) peut être commandée par le dispositif de commande de programmes (14) en liaison avec un pressostat (13) de telle sorte que le dispositif de chauffage (6) est recouvert d'eau et la quantité d'eau amenée peut être chauffée à une température à laquelle des agents de dureté dissous dans l'eau, en particulier le calcaire dissous dans l'eau, sont précipités et en ce que, après le chauffage, l'eau demeurant dans la cuve de lessivage (4) est pompée, au moyen d'une pompe de circulation (10), dans l'unité de génération de vapeur (7) dans laquelle cette eau est utilisée pour la génération de vapeur en vue du processus de traitement à la vapeur.
  6. Machine à laver selon la revendication 5,
    caractérisée en ce que
    le pressostat (13) provoque le réapprovisionnement en eau fraîche quand le niveau de l'eau descend au-dessous de la surface du dispositif de chauffage (6).
  7. Machine à laver pour la réalisation du procédé selon la revendication 4, caractérisée en ce que,
    par le dispositif de commande de programmes (14), un programme de détartrage peut être commandé dans lequel un agent de détartrage peut être introduit avec une quantité d'eau prédéfinie dans la cuve de lessivage (4),
    en ce que l'eau mélangée avec l'agent de détartrage peut être chauffée par le dispositif de chauffage (6) à une température nécessaire pour l'action de la solution détartrante,
    et en ce que cette solution détartrante chauffée peut être reconduite dans la cuve de lessivage (4) par une pompe de circulation (10) dans le circuit via le dispositif de production de vapeur (7).
EP12401243.6A 2012-12-04 2012-12-04 Lave-linge doté d'un générateur vapeur et son procédé d'utilisation Active EP2740827B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP12401243.6A EP2740827B1 (fr) 2012-12-04 2012-12-04 Lave-linge doté d'un générateur vapeur et son procédé d'utilisation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12401243.6A EP2740827B1 (fr) 2012-12-04 2012-12-04 Lave-linge doté d'un générateur vapeur et son procédé d'utilisation

Publications (2)

Publication Number Publication Date
EP2740827A1 EP2740827A1 (fr) 2014-06-11
EP2740827B1 true EP2740827B1 (fr) 2016-04-20

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014100072A1 (de) * 2014-01-07 2015-07-09 Miele & Cie. Kg Waschmaschine oder Waschtrockner, sowie Verfahren zum Betreiben dazu
DE102018216396A1 (de) * 2018-09-26 2020-03-26 BSH Hausgeräte GmbH Wäschepflegegerät mit einem Filterelement

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2604739A1 (fr) * 2011-12-13 2013-06-19 Electrolux Home Products Corporation N.V. Machine à laver avec pompe de recirculation

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006129912A1 (fr) * 2005-05-31 2006-12-07 Lg Electronics Inc. Machine a laver generant et utilisant de la vapeur
EP2295855A1 (fr) * 2009-08-18 2011-03-16 BSH Bosch und Siemens Hausgeräte GmbH Séparateur de vapeur et procédé de séparation de vapeur et eau dans un appareil de lavage du linge
PL2381029T5 (pl) 2010-04-26 2021-07-05 Miele & Cie. Kg Sposób eksploatacji pralki
EP2402498A1 (fr) 2010-07-02 2012-01-04 Miele & Cie. KG Procédé de fonctionnement d'une machine de traitement du linge à l'aide d'un dispositif de production de vapeur et machine de traitement du linge

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2604739A1 (fr) * 2011-12-13 2013-06-19 Electrolux Home Products Corporation N.V. Machine à laver avec pompe de recirculation

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