EP3715712A1 - Elektrohaushaltsgerät zur erzeugung von dampf - Google Patents

Elektrohaushaltsgerät zur erzeugung von dampf Download PDF

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Publication number
EP3715712A1
EP3715712A1 EP20163351.8A EP20163351A EP3715712A1 EP 3715712 A1 EP3715712 A1 EP 3715712A1 EP 20163351 A EP20163351 A EP 20163351A EP 3715712 A1 EP3715712 A1 EP 3715712A1
Authority
EP
European Patent Office
Prior art keywords
boiler
water
steam
scale
household appliance
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
EP20163351.8A
Other languages
English (en)
French (fr)
Other versions
EP3715712B1 (de
EP3715712C0 (de
Inventor
Frédéric COLLET
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.)
SEB SA
Original Assignee
SEB SA
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 SEB SA filed Critical SEB SA
Publication of EP3715712A1 publication Critical patent/EP3715712A1/de
Application granted granted Critical
Publication of EP3715712B1 publication Critical patent/EP3715712B1/de
Publication of EP3715712C0 publication Critical patent/EP3715712C0/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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 smoothing comprising a tank in which water is brought to the boil and relates more particularly to a household appliance provided with means for removing scale formed in the tank.
  • the scale accumulated in the tank must therefore be removed 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.
  • an object of the present invention is to respond to the drawbacks of the documents of the prior art mentioned above and in particular, to provide a household appliance which allows further scale collection. more efficient, without compromising the ease of use of the device.
  • a predetermined (or reference) level of water is defined and maintained in the boiler or heating vessel.
  • 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 steam bubbles and / or convection currents) over the upper edge, to then end up in the scale collection device.
  • the predetermined water level 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 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 separation means arranged in the boiler between at least part of the heating means and the predetermined level, so as to screen a passage of vapor bubbles and / or convection current. , and thus define a zone of still water in the boiler at the level of the scale collection device.
  • the separation means are a sheet forming a deflector.
  • Such a deflector defines in the boiler a zone of calm water (in contrast to the rest of the water agitated by the bubbles / convection currents), favorable 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 calm water zone / agitated water zone 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 Vee.
  • the separation means comprise said at least one upper edge.
  • the household appliance for generating steam comprises a steam draw-off valve and a protective wall arranged between the steam draw-off valve and the predetermined level.
  • a protective wall located above the surface of the water protects the draw-off valve by forming a screen against the drops of water projected by the bubbling, and also against any scale particles present in the water from the boiler.
  • the protective wall is integrated into the separation means. This limits the parts to be fixed in the boiler.
  • a plate with a first portion with a horizontal edge completely submerged or at the level of the surface (at the predetermined level), and a second portion which is partially submerged, and which extends above the predetermined level, of so as to go between the water surface and the steam draw-off valve.
  • said at least one upper edge is arranged at the predetermined level or below the predetermined level.
  • the means for measuring the water level comprise a capacitive sensor.
  • a capacitive sensor has an electrode at its lower end, and the lower end of the sensor is disposed substantially at the same height as said upper edge.
  • this capacitive sensor makes it possible to conduct an electric current of low intensity 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 the 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 prevents any interference between these elements during the assembly / disassembly phases of the scale collector.
  • the household appliance for generating steam comprises a water tank connected to the supply means.
  • the supply means comprise a pump.
  • FIG. 1 shows a perspective view of a steam production apparatus according to the invention, with in dotted lines a steam production boiler 10, which will be detailed in the following figures, a pump 31 for supplying water to the boiler 10, and a water tank 32 which is connected to the pump 31.
  • the appliance of the figure 1 is a steam generator that feeds a steam iron through a cord connecting the steam generator to the iron.
  • the figure 2 represents the boiler 10, that is to say a heating vessel comprising a lower vessel 11 and an upper vessel 12.
  • the boiler 10 is made of sheet metal, preferably of a material which is resistant to heat and corrosion , that is to say in lacquered steel, in stainless steel, or in aluminum.
  • the boiler 10 is equipped with heating means 20, an electrical resistance which is affixed to the lower surface of the boiler 10. It is possible to provide a circular or U-shaped path of the electrical resistance, and there is can also provide an intermediate floor between the boiler 10 and the heating means 20, to distribute the heat well.
  • a steam draw-off 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 FIG. figure 3 for example.
  • 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 the 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 is also provided with in particular a scale collector 43 visible on the figures 3-6 , removable from 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 wheel 44 (it is possible to provide a screwing, a bayonet coupling, a quarter turn, etc.).
  • the capacitive sensor essentially forming the water level measuring means 50 is offset relative to the scale collector 43, which avoids any interference between these components, even if the user does not align not perfectly the 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 still water zone ZEC, in the part of the liquid above the separation means.
  • the baffle 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 still water zone ZEC, in contrast of the peripheral zone where air bubbles as well as convection currents cause surface eddies, in a zone of agitated water ZEA.
  • the separation means formed by the deflector 40 are essentially a V-shaped sheet which converges towards the scale collector 43.
  • the deflector 40 comprises two edges 41 and 42 essentially horizontal on either side of the scale collector 43 , which makes it possible to guide a large quantity 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 draw-off valve 60.
  • This portion of the deflector forms a protective wall or a screen for droplets of vapor. water or scale particles which would be projected from the bubbling surface of the water 70 towards the strainer 61 of the steam draw-off valve 60. Consequently, this screen portion avoids seeing water or impurities carried away with it. steam, which increases the overall quality of the device.
  • the cold water supply is installed so as to open into the liquid water zone directly above the scale collector 43: in this way the finest scale particles created immediately during thermal shock linked to the heating of the water entering the boiler are located in the collection area and are more easily captured.

Landscapes

  • 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)
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)

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

Family

ID=67185447

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20163351.8A Active EP3715712B1 (de) 2019-03-25 2020-03-16 Elektrohaushaltsgerät zur erzeugung von dampf

Country Status (3)

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

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117387052A (zh) * 2023-12-12 2024-01-12 杭州华源前线能源设备有限公司 一种新型大功率电极加热装置

Families Citing this family (1)

* 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

Citations (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
DE2642911A1 (de) * 1976-07-20 1978-01-26 Buero Fuer Elektrotechnik Hans Luftbefeuchtungseinrichtung
WO2000017575A1 (de) 1998-09-22 2000-03-30 Axair Ag Dampferzeuger mit abnehmbarem kalkaufnahmebehälter
US6427637B1 (en) 1998-09-22 2002-08-06 Axair Ag Steam generator with at least partially double-walled evaporation tank
FR2904683A1 (fr) * 2006-08-03 2008-02-08 Seb Sa Appreil electromenager comportant une cuve dans laquelle de l'eau est portee a ebullition et des moyens pour evacuer le tartre

Patent Citations (6)

* 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
DE2642911A1 (de) * 1976-07-20 1978-01-26 Buero Fuer Elektrotechnik Hans Luftbefeuchtungseinrichtung
WO2000017575A1 (de) 1998-09-22 2000-03-30 Axair Ag Dampferzeuger mit abnehmbarem kalkaufnahmebehälter
US6427637B1 (en) 1998-09-22 2002-08-06 Axair Ag Steam generator with at least partially double-walled evaporation tank
FR2904683A1 (fr) * 2006-08-03 2008-02-08 Seb Sa Appreil electromenager comportant une cuve dans laquelle de l'eau est portee a ebullition et des moyens pour evacuer le tartre
EP2047174A2 (de) 2006-08-03 2009-04-15 Seb S.A. Haushaltsanwendung mit einem kessel zum kochen von wasser und einem mittel gegen kesselstein

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117387052A (zh) * 2023-12-12 2024-01-12 杭州华源前线能源设备有限公司 一种新型大功率电极加热装置
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

Also Published As

Publication number Publication date
EP3715712B1 (de) 2023-06-07
FR3094464A1 (fr) 2020-10-02
EP3715712C0 (de) 2023-06-07
CN111733580A (zh) 2020-10-02
FR3094464B1 (fr) 2022-04-29

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