EP3715712B1 - Elektrohaushaltsgerät zur erzeugung von dampf - Google Patents

Elektrohaushaltsgerät zur erzeugung von dampf Download PDF

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Publication number
EP3715712B1
EP3715712B1 EP20163351.8A EP20163351A EP3715712B1 EP 3715712 B1 EP3715712 B1 EP 3715712B1 EP 20163351 A EP20163351 A EP 20163351A EP 3715712 B1 EP3715712 B1 EP 3715712B1
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EP
European Patent Office
Prior art keywords
boiler
water
electric household
scale
producing steam
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Application number
EP20163351.8A
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English (en)
French (fr)
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EP3715712A1 (de
EP3715712C0 (de
Inventor
Frédéric COLLET
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SEB SA
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SEB SA
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Publication of EP3715712B1 publication Critical patent/EP3715712B1/de
Publication of EP3715712C0 publication Critical patent/EP3715712C0/de
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
    • F22B1/284—Methods of steam generation characterised by form of heating method in boilers heated electrically with water in reservoirs
    • 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
    • D06F79/00—Accessories for hand irons
    • D06F79/04—Stoves or other heating means specially adapted for heating irons externally
    • 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
    • D06F75/00—Hand irons
    • D06F75/08—Hand irons internally heated by electricity
    • D06F75/10—Hand irons internally heated by electricity with means for supplying steam to the article being ironed
    • D06F75/12—Hand irons internally heated by electricity with means for supplying steam to the article being ironed the steam being produced from water supplied to the iron from an external source

Definitions

  • the present invention relates to a household appliance for steam straightening comprising a tank in which water is brought to a boil and relates more particularly to a household appliance provided with means for removing scale formed in the tank.
  • the scale In these devices where the water boils en masse, the scale, or calcium carbonate, is deposited in the tank in the form of sludge and fine plates. When the quantity of sludge and fine platelets becomes significant, foam forms under the action of the steam bubbles and it can then be driven outside the tank. In the case of an ironing appliance, for example, the entrained scale can block a control solenoid valve or be deposited on the linen, leaving unpleasant traces.
  • the scale accumulated in the tank must therefore be evacuated periodically to avoid these drawbacks. For example, it is recommended to intervene every ten uses to carry out this cleaning on an ironing device used normally.
  • a predetermined (or reference) level of water is defined and maintained in the boiler or heating tank.
  • This predetermined or reference level is chosen taking into account the altitude in the boiler of the upper edge of the scale collection device.
  • the predetermined level is chosen so that the scale which bubbles in the boiling water is pushed by the eddies (generated by the steam bubbles and/or the convection currents) over the upper edge, to then end up in the scale collection device.
  • the predetermined level of water and the upper edge are approximately at the same altitude in the boiler.
  • the upper edge will be slightly submerged (one or two millimeters below the surface for example) or flush with the surface of the water.
  • the scale collection device comprises a scale collector provided to be removable from the boiler. This allows a user to remove scale without having to drain the boiler, without having to add an anti-scale product.
  • the scale collection device comprises means of separation arranged in the boiler between at least part of the heating means and the predetermined level, so as to shield the passage of bubbles of steam and/or convection current , and thus define a calm water zone in the boiler at the level of the scale collection device.
  • the separation means are a sheet forming a deflector.
  • Such a baffle defines in the boiler a zone of calm water (in contrast to the rest of the water agitated by the bubbles / currents of convection), conducive to the recovery of scale (by gravity, sedimentation, progressive movement towards the collector tartar).
  • the separation means form an inclined wall extending in its upper part from the zone of calm water/zone of agitated water border to its lower part adjacent to the scale collector.
  • the separation means can be likened to a funnel which guides the scale towards the scale collector.
  • two inclined plates can be provided on either side of the scale collector, forming a V.
  • the separating means comprise said at least one upper edge.
  • the steam-generating household appliance comprises a steam withdrawal valve and a protective wall arranged between the steam withdrawal valve and the predetermined level.
  • a protective wall located above the surface of the water protects the withdrawal valve by forming a screen against the drops of water projected by the bubbling, and also against any particles of scale present in the water in the boiler.
  • the protective wall is integrated into the separation means. This limits the parts to be fixed in the boiler.
  • a plate can be provided with a first portion with a horizontal edge completely submerged or at surface level (at the predetermined level), and a second portion which is partially submerged, and which extends above the predetermined level, so as to go between the surface of the water and the steam draw-off valve.
  • said at least one upper edge is arranged at the predetermined level or below the predetermined level.
  • the water level measurement means comprise a capacitive sensor.
  • a capacitive sensor has an electrode at its lower end, and the lower end of the sensor is arranged substantially at the same height as said upper edge.
  • this capacitive sensor makes it possible to conduct a low-intensity electric current between an electrode at the end of the sensor and the walls of the boiler when the water level comes into contact with it.
  • the end of the sensor is preferably located directly above the deflector zone and as close as possible to the center of the boiler.
  • the level measuring means are arranged in a central portion of the boiler, the central portion preferably having a radius of less than 5 cm. Such an arrangement makes it possible to limit variations in filling level, even if the user does not place the device on a horizontal support.
  • the level measuring means are offset from the scale collector.
  • the level sensor is offset from the scale collector, which avoids any interference between these elements during the assembly/dismantling phases of the scale collector.
  • the steam-generating household appliance comprises a water tank connected to the supply means.
  • the supply means comprise a pump.
  • FIG. 1 this represents a perspective view of a steam generating apparatus according to the invention, with in dotted lines a steam generating boiler 10, which will be detailed in the following figures, a pump 31 for supplying water to the the boiler 10, and a water tank 32 which is connected to the pump 31.
  • the apparatus of the figure 1 is a steam generator that supplies a steam iron through a cord connecting the steam generator to the iron.
  • FIG 2 represents the boiler 10, that is to say a heating tank comprising a lower tank 11 and an upper tank 12.
  • the boiler 10 is made of sheet metal, preferably of a material which resists heat and corrosion , that is to say in lacquered steel, stainless steel, or aluminum.
  • Boiler 10 is equipped with heating means 20, an electric resistor which is affixed to the lower surface of boiler 10.
  • a circular or U-shaped path of the electric resistor can be provided, and one can also provide an intermediate floor between the boiler 10 and the heating means 20, to evenly distribute the heat.
  • a steam withdrawal valve 60 is also provided in the upper part of the boiler 10, with a strainer 61 arranged in the boiler 10, as shown in picture 3
  • Supply means 30 are coupled to the boiler 10 to fill it with water, typically comprising an injection nozzle, coupled to the pump 31 of the figure 1 .
  • water level measuring means 50 are provided near the center of the boiler 10.
  • the boiler 10 As shown in figure 6 , it is then possible to fill the boiler 10 with water 70 to be vaporized, to a predetermined level NP, measured by the water level measuring means 50, here a capacitive sensor having its measuring end located at the level predetermined NP.
  • the water level measuring means 50 here a capacitive sensor having its measuring end located at the level predetermined NP.
  • the location of the water level measuring means 50 in the center of the boiler 10 makes it possible to guarantee a substantially constant filling level, even if the device is not perfectly horizontal.
  • a scale collection device with in particular a scale collector 43 visible on the figures 3-6 , removable relative to the boiler 10, via a wheel 44 screwed onto the sleeve of the water supply means.
  • the scale collector 43 is in the form of a gutter, and extends all along the boiler 10, that is to say over the major part of its diameter. The user can remove the scale collector 43 by acting on the knob 44 (one can provide a screw, a bayonet coupling, a quarter turn). It should be noted that the capacitive sensor essentially forming the water level measuring means 50 is offset with respect to the scale collector 43, which avoids any interference between these components, even if the user does not align not perfectly scale collector 43 with its intended location.
  • the boiler 10 also contains a deflector 40 which forms separation means in the boiler 10, to define a zone of calm water ZEC, in the part of the liquid above the separation means.
  • the deflector 40 is an inclined plate, which has an upper edge 42 placed substantially at the same height as the predetermined level NP. Consequently, the separation means are located between the heating means and the water 70 which is located in the upper part in the center of the boiler 10.
  • This zone above the deflector 40 is the zone of calm water ZEC, in contrast of the peripheral zone where air bubbles as well as convection currents cause eddies on the surface, in a zone of agitated water ZEA.
  • scale particles 80 (schematized in the form of stars) are carried towards the surface by the vapor bubbles and the convection currents. These scale particles 80 "bubble" on the surface, and end up being pushed by the eddies from the agitated water zone ZEA towards the calm water zone ZEC, over the upper edge 42. Then, these scale particles 80 can fall under the action of gravity, and they will be guided, driven along the slope of the inclined plate of the deflector 40 directly towards the scale collector 43.
  • the separation means with their upper edge flush or substantially below the surface, allow effective collection of scale particles 80.
  • the separation means formed by the deflector 40 are essentially a V-shaped plate which converges towards the scale collector 43.
  • the deflector 40 comprises two essentially horizontal edges 41 and 42 on either side of the scale collector 43 , which helps to guide a large amount of scale particles 80.
  • the deflector 40 comprises a portion of sheet metal which rises above the predetermined level NP, under the strainer 61 of the steam withdrawal valve 60.
  • This part of the deflector forms a protective wall or a screen for droplets of water or particles of scale which would be projected from the bubbling surface of the water 70 towards the strainer 61 of the steam withdrawal valve 60. Consequently, this screen portion avoids seeing water or impurities carried away with vapor, which increases the overall quality of the device.
  • the cold water supply is located so as to open into the liquid water zone directly above the scale collector 43: in this way the finest particles of scale created immediately during of the thermal shock linked to the heating of the water entering the boiler are located in the collection zone and are more easily captured.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sustainable Energy (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Commercial Cooking Devices (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Air Humidification (AREA)

Claims (15)

  1. Elektrohaushaltsgerät zur Erzeugung von Dampf, und insbesondere Dampfglättungsgerät mit einer Dampfzentrale, die ein Glättungswerkzeug wie ein Bügeleisen oder eine Glättungsbürste versorgt, umfassend:
    - einen Kessel (10), der angeordnet ist, um das zu verdampfende Wasser zu enthalten,
    - Heizmittel (20) des Kessels (10), die angeordnet sind, um das im Kessel (10) enthaltene Wasser zu erhitzen und zu verdampfen,
    - Zuführungsmittel (30) zur Versorgung des Kessels (10) mit Wasser, die angeordnet sind, um Wasser in den Kessel (10) einzuspritzen,
    - eine Kesselsteinsammelvorrichtung, die in dem Kessel (10) angeordnet ist und mindestens einen oberen Rand (41, 42) umfasst, der in Bezug auf einen Boden des Kessels (10) hoch angeordnet ist, um es in dem Wasser enthaltenen Kesselsteinpartikeln (80) zu ermöglichen, über den mindestens einen oberen Rand (41, 42) zu strömen, sodass sie in die Kesselsteinsammelvorrichtung gelangen,
    dadurch gekennzeichnet, dass das Gerät Wasserstandsmessmittel (50) umfasst, die mit den Zuführungsmitteln (30) verbunden sind, um einen Wasserstand in dem Kessel (10) auf einem vorbestimmten Füllstand (NP) zu halten, der ungefähr auf der gleichen Höhe wie der obere Rand (41, 42) der Kesselsteinsammelvorrichtung in dem Kessel (10) liegt, wobei der obere Rand (41, 42) vorzugsweise leicht eingetaucht ist oder bündig mit der Wasseroberfläche ist.
  2. Elektrohaushaltsgerät zur Erzeugung von Dampf nach dem vorstehenden Anspruch, wobei die Kesselsteinsammelvorrichtung einen Kesselsteinsammler (43) umfasst, der abnehmbar von dem Kessel (10) vorgesehen ist.
  3. Elektrohaushaltsgerät zur Erzeugung von Dampf nach dem vorstehenden Anspruch, wobei:
    - der Kesselsteinsammler (43) eine längliche Rinnenform aufweist,
    - der Kessel (10) eine Öffnung, die zum Einsetzen des Kesselsteinsammlers (43) in den Kessel (10) vorgesehen ist, und Mittel zur lösbaren Befestigung, wie ein Gewinde oder eine Vierteldrehung, umfasst, um eine Montage/Demontage des Kesselsteinsammlers (43) zu ermöglichen.
  4. Elektrohaushaltsgerät zur Erzeugung von Dampf nach einem der vorstehenden Ansprüche, wobei die Kesselsteinsammelvorrichtung Trennmittel umfasst, die in dem Kessel (10) zwischen mindestens einem Teil der Heizmittel (20) und dem vorbestimmten Füllstand (NP) angeordnet sind, um einen Durchgang von Dampfblasen und/oder Konvektionsstrom abzuschirmen und dadurch eine Zone ruhigen Wassers in dem Kessel (10) auf der Höhe der Kesselsteinsammelvorrichtung zu definieren.
  5. Elektrohaushaltsgerät zur Erzeugung von Dampf nach dem vorstehenden Anspruch, wobei die Trennmittel den mindestens einen oberen Rand (41, 42) umfassen.
  6. Elektrohaushaltsgerät zur Erzeugung von Dampf nach einem der vorstehenden Ansprüche, umfassend ein Dampfentnahmeventil (60) und einer Schutzwand, die zwischen dem Dampfentnahmeventil (60) und dem vorbestimmten Füllstand (NP) angeordnet ist.
  7. Elektrohaushaltsgerät zur Erzeugung von Dampf nach dem vorstehenden Anspruch in seiner Abhängigkeit von einem der Ansprüche 4 oder 5, wobei die Schutzwand in die Trennmittel integriert ist.
  8. Elektrohaushaltsgerät zur Erzeugung von Dampf nach einem der vorstehenden Ansprüche, wobei der mindestens eine obere Rand (41, 42) auf Höhe des vorbestimmten Füllstands (NP) oder unterhalb des vorbestimmten Füllstands (NP) angeordnet ist.
  9. Elektrohaushaltsgerät zur Erzeugung von Dampf nach einem der vorstehenden Ansprüche, wobei die Wasserstandsmessmittel (50) einen kapazitiven Sensor umfassen.
  10. Elektrohaushaltsgerät zur Erzeugung von Dampf nach einem der vorstehenden Ansprüche, wobei die Wasserstandsmessmittel (50) in einem zentralen Abschnitt des Kessels (10) angeordnet sind, wobei der zentrale Abschnitt vorzugsweise einen Radius von weniger als 5 cm hat.
  11. Elektrohaushaltsgerät zur Erzeugung von Dampf nach Anspruch 2 oder nach einem der Ansprüche 3 bis 10 in ihrer Abhängigkeit von Anspruch 2, wobei die Wasserstandsmessmittel (50) vom Kesselsteinsammler (43) versetzt sind.
  12. Elektrohaushaltsgerät zur Erzeugung von Dampf nach einem der vorstehenden Ansprüche, umfassend einen Wassertank (32), der mit den Zuführungsmitteln (30) verbunden ist.
  13. Elektrohaushaltsgerät zur Erzeugung von Dampf nach einem der vorstehenden Ansprüche, wobei die Zuführungsmittel (30) eine Pumpe umfassen.
  14. Elektrohaushaltsgerät zur Erzeugung von Dampf nach einem der vorstehenden Ansprüche, umfassend eine Steuereinheit, die mit den Wasserstandsmessmitteln (50) und den Zuführungsmitteln (30) verbunden ist.
  15. Elektrohaushaltsgerät zur Erzeugung von Dampf nach dem vorstehenden Anspruch, das eine Dampfzentrale bildet und insbesondere ein Dampfbügeleisen und/oder einen Dampfreinigungsbesen umfasst.
EP20163351.8A 2019-03-25 2020-03-16 Elektrohaushaltsgerät zur erzeugung von dampf Active EP3715712B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1903096A FR3094464B1 (fr) 2019-03-25 2019-03-25 Appareil de production de vapeur

Publications (3)

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EP3715712A1 EP3715712A1 (de) 2020-09-30
EP3715712B1 true EP3715712B1 (de) 2023-06-07
EP3715712C0 EP3715712C0 (de) 2023-06-07

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EP (1) EP3715712B1 (de)
CN (1) CN111733580A (de)
FR (1) FR3094464B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114645441B (zh) * 2020-12-17 2023-09-19 广州视源电子科技股份有限公司 衣物护理机
CN117387052B (zh) * 2023-12-12 2024-03-22 杭州华源前线能源设备有限公司 一种大功率电极加热装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3873806A (en) * 1969-06-11 1975-03-25 George W Schossow Vaporizer-humidifier
CH598546A5 (de) * 1976-07-20 1978-04-28 Mueller Hans Ing Buero Fuer El
WO2000017575A1 (de) 1998-09-22 2000-03-30 Axair Ag Dampferzeuger mit abnehmbarem kalkaufnahmebehälter
DE59902221D1 (de) 1998-09-22 2002-09-05 Axair Ag Pfaeffikon Dampferzeuger mit mindestens teilweise doppelwandigem verdampfungsgefäss
FR2904683B1 (fr) 2006-08-03 2008-10-24 Seb Sa Appreil electromenager comportant une cuve dans laquelle de l'eau est portee a ebullition et des moyens pour evacuer le tartre

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Publication number Publication date
EP3715712A1 (de) 2020-09-30
FR3094464A1 (fr) 2020-10-02
EP3715712C0 (de) 2023-06-07
CN111733580A (zh) 2020-10-02
FR3094464B1 (fr) 2022-04-29

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