WO2006040556A1 - Appareils generateurs de vapeur comprenant un moyen de traitement d’eau - Google Patents

Appareils generateurs de vapeur comprenant un moyen de traitement d’eau Download PDF

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Publication number
WO2006040556A1
WO2006040556A1 PCT/GB2005/003931 GB2005003931W WO2006040556A1 WO 2006040556 A1 WO2006040556 A1 WO 2006040556A1 GB 2005003931 W GB2005003931 W GB 2005003931W WO 2006040556 A1 WO2006040556 A1 WO 2006040556A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
appliance according
appliance
steam
reservoir
Prior art date
Application number
PCT/GB2005/003931
Other languages
English (en)
Inventor
Christina Goodrick-Meech
Suzie Patel
Original Assignee
Kenwood Limited
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
Priority claimed from GB0422690A external-priority patent/GB2419081A/en
Priority claimed from GB0423717A external-priority patent/GB2419607A/en
Application filed by Kenwood Limited filed Critical Kenwood Limited
Publication of WO2006040556A1 publication Critical patent/WO2006040556A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00—Cooking-vessels
    • A47J27/04—Cooking-vessels for cooking food in steam; Devices for extracting fruit juice by means of steam ; Vacuum cooking vessels
    • A47J27/05—Tier steam-cookers, i.e. with steam-tight joints between cooking-vessels stacked while in use
    • 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
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J27/00—Cooking-vessels
    • A47J27/21—Water-boiling vessels, e.g. kettles
    • A47J27/21166—Constructional details or accessories
    • A47J27/21183—Water filters
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance

Definitions

  • This invention relates to steaming appliances usable, for example, for cooking, ironing and cleaning, and it relates especially though not exclusively to such apparatus intended for use in the home.
  • a recent innovation described in UK patent application No. GB0413900.2 and assigned to the present applicant, provides for the steam generated in the steam station to be readily usable for purposes other than ironing and, in one particular embodiment described in that application, there is provided an outlet additional to that which feeds steam to the iron, into which a tubular connection can be plugged in order to apply the steam to a choice of head devices adapted for cleaning or other purposes.
  • This invention also relates to food steamers; especially, though not exclusively, tiered steamer systems, wherein a plurality of food support trays is stacked within an enclosure supported on a base containing a water heater, and arranged such that food on each tray can be subjected to steam issuing from the heater.
  • steaming is a healthy, and tasty way of preparing certain foods, and current interest in healthy eating has promoted significant interest in domestic appliances of this kind.
  • appliances available on the market, and most operate efficiently and are user-friendly. However, certain difficulties can arise in operation of such appliances, including tendencies for the heater efficiency to reduce over time, due at least in part to scale formation, and for water-borne chemicals, such as chlorine, to taint the flavour of food steamed therein.
  • a steaming appliance comprising a water reservoir in communication with an electrically operated heater arranged to generate steam; the appliance further comprising water-treatment means disposed to treat water to be heated in the heater, such as to reduce the content of unwanted materials therein, wherein the water-treatment means comprises a water-treatment device housed in fluid communication with water added to said reservoir; and wherein indicator means are provided for indicating a need for attention to the water-treatment device, as a result of usage of the appliance and/or effluxion of time.
  • the indicator means may take any convenient form, such as a colour change associated with a filtration medium, or an additive thereto, incorporated into the water-treatment device, for example in the form of a cartridge; such an arrangement requiring part at least of a readily visible portion of the cartridge to be sufficiently transparent or translucent to permit a user to observe the colour change.
  • An alternative, or additional, indicator means may respond to motion of a part of the appliance that is opened, or otherwise moved, when water is to be added to the reservoir, or the appliance otherwise readied for operation.
  • Some preferred embodiments of the invention may comprise a ratchet mechanism linking the motion of said appliance part to a progressively mobile mechanical indicator; for example, one of the same general kind as that disclosed in EP-0756583-B1 and EP-0861809-B1.
  • electrical signals indicative of motion of the said part are generated, and supplied to an electronic indicating device, such as a liquid crystal display (LCD) device, and/or one or more light-emitting diodes (LEDs).
  • an electronic indicating device such as a liquid crystal display (LCD) device, and/or one or more light-emitting diodes (LEDs).
  • LCD liquid crystal display
  • LEDs light-emitting diodes
  • Microprocessor devices may be employed in known manner to drive such electronic indicating devices.
  • a particularly preferred embodiment of the invention detects the switching on of power to the appliance as a primary indication of usage, whereby electrical signals indicative of such switching operations are generated and an electronic display indicative of usage of the appliance is derived therefrom.
  • an electrical indication of usage is derived by means of a reed switch or other sensor located so as to respond to a component, such as a magnet, contained in or associated with a tubular connector that is connectable to an outlet of the steam generator to convey the steam therefrom to a remote location, such as an iron or a cleaning head.
  • such electrical power as may be required to drive components such as sensors, displays and microprocessors may be derived from the mains electricity supply (suitably processed as necessary), or any or all such components may be battery powered.
  • the power is primarily derived from the mains supply, but is backed up by battery in case of mains failure, or to allow for prolonged periods of non-use.
  • the water reservoir may be supplied with water either directly through a filler orifice or indirectly by way of a removable tank, which may be carried to a faucet for filling.
  • a removable tank is used, it is preferably provided with means whereby the water level therein is rendered readily visible to a user.
  • Such means may comprise the use of a transparent or translucent medium for part of the tank itself, or the incorporation of one or more windows through which the water level can be discerned.
  • the tank and/or the window may advantageously bear capacity markings to enable a user to readily decide when the tank should be filled or topped up with water.
  • Figure 1 shows, in side elevation and in part cross-sectional view, a steam station in accordance with one example of the invention.
  • Figure 2 shows, in similar view to Figure 1, the base part of a steam station in accordance with another example of the invention.
  • Figure 3 shows, in side elevation and in part cross-sectional view, a food steamer in accordance with one example of the invention.
  • Figure 4 shows, in similar view to Figure 3, the base part of a food steamer in accordance with another example of the invention.
  • FIG. 1 there is shown a steam station in accordance with one example of the invention. It will be appreciated that, since many components of the steam station illustrated are conventional, such components will either not be referenced at all or, if mentioned, will not be described in detail.
  • the steam station's base unit is shown generally at 1, and comprises a casing 2 which houses the principal components of the steam station, as will be described.
  • a casing 2 which houses the principal components of the steam station, as will be described.
  • Mounted within the casing 2 are primary and secondary water reservoirs 3 and 4 respectively, and an electrically operated heater 5 comprising a tubular, through-flow water heater of known kind.
  • the heater 5 is plumbed into fluid communication with the reservoir 4 and arranged to heat water supplied to it from the reservoir 3 in order to generate steam, which issues from a steam outlet 6.
  • the steam outlet 6 may be coupled by way of a tubular, steam-handling connection (not shown) to an iron or to a cleaning head, or a steam-control head used for an alternative purpose.
  • the casing 2 may usefully, as indicated previously, be provided with more than one steam outlet, so that a first tubular conduit, used for ironing, can be attached to a first outlet, and a second tubular conduit, used for cleaning and/or other purposes, can be attached to a second steam outlet.
  • the steam station of Figure 1 further comprises a water treatment means disposed to treat water to be heated in the heater.
  • the water treatment means in this example comprises a cartridge 7 containing a water treatment medium intended to reduce the content of scale-producing materials therein.
  • the filter cartridge 7 is positioned such that its lid 8 which, in known manner, is configured to comprise a water inlet to the cartridge, is disposed at a low point of the primary water reservoir 3. Water filtered through the water treatment medium within the cartridge 7 fills the secondary reservoir 4, which is connected by a water outlet tube 9 to the inlet of the heater 5.
  • the water outlet tube 9 is plumbed to an upper region of the reservoir 4. This configuration is used particularly for cartridges whose water-filtration media are intended to be kept constantly wet. For alternative media, the plumbing of the tube 9 may differ.
  • a user of the steam station 1 can add water to the primary reservoir 3 by way of a fill aperture 10 provided in the. casing 2 and closed by way of a filler lid 11.
  • the cartridge 7 is mounted so as to be readily removable from the steam station for replacement or for recharging of the water-treatment medium therein and accordingly, in this embodiment of the invention, the dimensions of the fill aperture 10 are designed to accommodate access to, and removal of, the cartridge. If preferred, access to the cartridge may be gained by other means. For example, a part of the top cover of the casing 2 may be hinged, and thus liftable to expose the cartridge.
  • a user it is of importance for a user to know when to replace or recharge a filter cartridge, in order to ensure that an effective filter medium is at all times exposed to the water, and thus an indication of actual or forthcoming expiry of the useful life of the filter medium, as a result of usage and/or effluxion of time, is provided.
  • Such an indication may take any convenient form, such as a colour change associated with the medium itself, or an additive thereto; such an arrangement requiring part at least of the cartridge to be sufficiently transparent or translucent, and for the casing 2 to be provided with a window, or some other means whereby the aforementioned part of the cartridge is made readily visible, to permit a user to observe the colour change.
  • the indication may be provided by a specific indicator means located on the casing 2 of the steam station.
  • a specific indicator means located on the casing 2 of the steam station.
  • Such an indicator means may respond, for example, to motion of a part of the steam station (such as the lid 11 covering the water-fill aperture 10) that is opened, or otherwise moved, when water is to be added to the reservoir, or when the steam station is otherwise readied for operation.
  • the indicator means may comprise a ratchet mechanism linking the motion of said steam station part to a progressively mobile mechanical indicator; for example, one of the same general kind as that disclosed in EP-0756583-B1 and EP-0861809-B1.
  • electrical signals indicative of motion of the said part, or the fitment of a tubular connection to an outlet of the casing are generated by any convenient means, such as one or more magnetic reed switches which are not shown, but are well known in the art, and supplied to en electronic indicating device, such as a liquid crystal display (LCD) device 12, and/or one or more light-emitting diodes (LEDs).
  • electronic indicating device such as a liquid crystal display (LCD) device 12, and/or one or more light-emitting diodes (LEDs).
  • LCD liquid crystal display
  • LEDs light-emitting diodes
  • Microprocessor devices may be employed in known manner to process the electrical signals and to drive such electronic indicating devices.
  • Radio-frequency identifying devices RFIDs
  • RFIDs Radio-frequency identifying devices
  • a preferred configuration is for the display 12 to show an accumulating count representing the actual number of uses of the steam station, or a decrementing count, indicating how many uses can be tolerated before replacement of the cartridge is advisable.
  • a day-by-day background count purely indicative of elapsed time since the previous installation of a cartridge, is preferably performed by the microprocessor, and used to display, either by means of the LCD itself, or by illumination of an adjacent LED, when the cartridge fill has time-expired.
  • any audible warning preferably (once having been actuated) being operative to sound each time the steam station is switched on until the cartridge is replaced.
  • the audible alarm may operate for a fixed time period and/or be capable of being switched off by means of a user-operated cancellation button, effective until the next switching-on of the steam station.
  • the secondary water reservoir 4 is supplied with water indirectly by way of a removable tank 13, which may be carried to a faucet for filling.
  • a removable tank such as 13
  • Such means may comprise the use of a transparent or translucent medium for part of the tank itself, or the incorporation of one or more windows through which the water level can be discerned.
  • the tank and/or the window may advantageously bear capacity markings to enable a user to readily decide when the tank should be filled or topped up with water.
  • the water outlet tube 9 is, in this instance, plumbed in near the base of the secondary reservoir 4. If it is necessary to maintain the filter medium in cartridge 7 in a permanently wet condition, a weir arrangement is provided by a wall 14.
  • FIG. 3 there is shown a food steamer in accordance with another example of the invention. It will be appreciated that, since many components of the steamer illustrated are conventional, such components will either not be referenced at all or, if mentioned, will not be described in detail.
  • the steamer is shown generally at 21, and comprises at least one tray member, or basket, such as 22 for food to be steamed, supported within a casing 23 with a lid 24; the casing 23 being mounted on a base 25.
  • Mounted within the base 25 are primary and secondary water reservoirs 26, 27 respectively, and an electrically operated heater 28 comprising a tubular, through-flow water heater of known kind.
  • the heater 28 is plumbed into fluid communication with the reservoir 27 and arranged to heat water supplied to it from the reservoir in order to generate steam, which issues into the enclosure formed by the lidded casing 23 by way of a steam outlet 29.
  • the steam outlet 29 may be coupled to a centrally located tube, or chimney, (not shown) extending upwardly within the casing 23 and configured to promote the supply of steam to the locations occupied by the baskets 22; the baskets being centrally apertured to accommodate the chimney.
  • the steamer of Figure 3 further comprises a water treatment means disposed to treat water to be heated in the heater.
  • the water treatment means in this example comprises a cartridge 30 containing a water treatment medium intended to reduce the content of scale-producing and/or flavour-tainting materials therein.
  • the filter cartridge 30 is positioned such that its lid 30a which, in known manner, is configured to comprise a water inlet to the cartridge, is disposed at a low point of the primary water reservoir 26. Water filtered through the water treatment medium within the cartridge 30 fills the secondary reservoir 27, which is connected by a water outlet tube 31 to the inlet of the heater 28.
  • the water outlet tube 31 is plumbed to an upper region of the reservoir 27.
  • This configuration is used particularly for cartridges whose water-filtration media are intended to be kept constantly wet.
  • the plumbing of the tube 31 may differ.
  • a user of the steamer 21 can add water to the primary reservoir 26 by way of a fill aperture 32 provided in the base 25, and it is also preferable for the steamer to be configured such that condensate from the steaming operation is caught in a perforated tray member 33 and channelled therefrom into the primary reservoir 26 for re-cycling.
  • the cartridge 30 is mounted so as to be readily removable from the steamer for replacement or for recharging of the water-treatment medium therein.
  • Such an indication may take any convenient form, such as a colour change associated with the medium itself, or an additive thereto; such an arrangement requiring part at least of a readily visible portion of the cartridge to be sufficiently transparent or translucent to permit a user to observe the colour change.
  • the indication may be provided by a specific indicator means located on the base 25 of the steamer.
  • a specific indicator means located on the base 25 of the steamer.
  • Such an indicator means may respond, for example, to motion of a part of the steamer (such as a flap or lid (not shown) covering the water inlet 32) that is opened, or otherwise moved, when water is to be added to the reservoir, or when the steamer is otherwise readied for operation.
  • the indicator means may comprise a ratchet mechanism linking the motion of said steamer part to a progressively mobile mechanical indicator; for example, one of the same general kind as that disclosed in EP-0756583-B1 and EP-0861809-B1.
  • electrical signals indicative of motion of the said part are generated by any convenient means, such as RFIDs and/or one or more magnetic reed switches which are not shown, but are well known in the art, and supplied to en electronic indicating device, such as a liquid crystal display (LCD) device 34, and/or one or more light-emitting diodes (LEDs).
  • RFIDs and/or one or more magnetic reed switches which are not shown, but are well known in the art
  • en electronic indicating device such as a liquid crystal display (LCD) device 34, and/or one or more light-emitting diodes (LEDs).
  • LCD liquid crystal display
  • LEDs light-emitting diodes
  • a preferred configuration is for the display 34 to show an accumulating count representing the actual number of uses of the steamer, or a decrementing count, indicating how many uses can be tolerated before replacement of the cartridge is advisable.
  • a day-by-day background count purely indicative of elapsed time since the previous installation of a cartridge, is preferably performed by the microprocessor, and used to display, either by means of the LCD itself, or by illumination of an adjacent LED, when the cartridge fill has time-expired.
  • any audible warning preferably (once having been actuated) being operative to sound each time the steamer is switched on until the cartridge is replaced.
  • the audible alarm may operate for a fixed time period and/or be capable of being switched off by means of a user-operated cancellation button, effective until the next switching-on of the steamer.
  • the secondary water reservoir 27 is supplied with water indirectly by way of a removable tank 35, which may be carried to a water tap for filling.
  • a removable tank such as 35
  • it is preferably provided with means whereby the water level therein is rendered readily visible to a user.
  • Such means may comprise the use of a transparent or translucent medium for part of the tank itself, or the incorporation of one or more windows through which the water level can be discerned.
  • the tank and/or the window may advantageously bear capacity markings to enable a user to readily decide when the tank should be filled or topped up with water.
  • the water outlet tube 31 is, in this instance, plumbed in near the base of the secondary reservoir 27. If it is necessary to maintain the filter medium in cartridge 30 in a permanently wet condition, a weir arrangement is provided by a wall 36.
  • electrical or electronic indicator means such electrical power as may be required to drive components such as sensors, displays and microprocessors may be derived from the mains electricity supply (suitably processed as necessary to effect functions such as voltage reduction and stabilisation), or any or all such components may be battery powered.
  • the power is primarily derived from the mains supply, but is backed up by battery in case of mains failure, or to allow for prolonged periods of non- use.
  • any convenient electrically- powered heating device or arrangement may be used to heat the water in any embodiment of the invention.
  • the invention is not limited to the utilisation of water treatment devices based on filter cartridges containing filter media. It is also applicable, for example, to water treatment devices utilising scale inhibitors comprising meshes or other structures and/or magnetic or electromagnetic components, all of which operate in a fundamentally different manner to conventional cartridge- based filters, but which still require attention at intervals to ensure that they are clean and functional.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cookers (AREA)

Abstract

L’invention concerne des appareils générateurs de vapeur susceptibles d’être utilisés, par exemple, pour la cuisson, le repassage et le nettoyage, notamment dans un contexte domestique. Un appareil générateur de vapeur de ce type (1, 21) comprend un élément chauffant électrique (5, 28) conçu pour chauffer de l’eau en générant ainsi de la vapeur destinée à être utilisée par ou dans l’appareil, et comporte un dispositif de traitement d’eau (7, 30) pour traiter l’eau dans le but d’en réduire la teneur en matières indésirables. Le dispositif de traitement d’eau est exposé à l’eau et un indicateur (12, 34) sert à attirer l’attention d’un utilisateur sur le dispositif, en ce qui concerne un niveau d’utilisation prédéterminé de l’appareil et/ou un temps écoulé depuis l’installation du dispositif ou depuis sa dernière inspection. Un utilisateur de l’appareil peut ainsi être alerté de la nécessité de remplir ou de remplacer des cartouches de traitement usagées (17, 30), ou de nettoyer le dispositif de traitement d’eau, ou d’en assurer l’entretien par d’autres moyens, afin de garantir en permanence un traitement efficace de l’eau.
PCT/GB2005/003931 2004-10-13 2005-10-12 Appareils generateurs de vapeur comprenant un moyen de traitement d’eau WO2006040556A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB0422690.8 2004-10-13
GB0422690A GB2419081A (en) 2004-10-13 2004-10-13 Food steamer with water treatment device
GB0423717.8 2004-10-26
GB0423717A GB2419607A (en) 2004-10-26 2004-10-26 Steam station with water filter

Publications (1)

Publication Number Publication Date
WO2006040556A1 true WO2006040556A1 (fr) 2006-04-20

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Application Number Title Priority Date Filing Date
PCT/GB2005/003931 WO2006040556A1 (fr) 2004-10-13 2005-10-12 Appareils generateurs de vapeur comprenant un moyen de traitement d’eau

Country Status (1)

Country Link
WO (1) WO2006040556A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2496709A (en) * 2011-11-21 2013-05-22 Huiyang Allan Plastic & Electric Ind Co Ltd Food Steamer with detachable water tank

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4893422A (en) * 1987-09-05 1990-01-16 Robert Krups Stiftung & Co. Kg. Steam iron with water softening facility
US4969393A (en) * 1987-09-05 1990-11-13 Robert Krups Stifting & Co. KG Appliance with water softening facility
EP0645488A1 (fr) * 1993-09-24 1995-03-29 Seb S.A. Procédé de repassage d'un article textile à gestion automatique du cycle de vapeur, et appareil de repassage pour la mise en oeuvre dudit procédé
WO1996022045A1 (fr) * 1995-01-19 1996-07-25 Kenwood Marks Limited Bouilloire
GB2308135A (en) * 1995-12-15 1997-06-18 Singer Co Nv Steam treating garments:water supply
US5680810A (en) * 1996-08-09 1997-10-28 Sham; John C. K. Steam toaster oven
WO2000006945A1 (fr) * 1998-07-29 2000-02-10 Marcello Ferrante Procede permettant de faire varier automatiquement la pression d'utilisation dans les generateurs de vapeur
US6178671B1 (en) * 1998-09-22 2001-01-30 U.S. Philips Corporation Steam iron with calcification indication
EP1138235A1 (fr) * 2000-03-29 2001-10-04 Moulinex S.A. Appareil électroménager comportant une cartouche amovible de traitement de l'eau
WO2002027246A1 (fr) * 2000-09-27 2002-04-04 Koninklijke Philips Electronics N.V. Element chauffant d'un ecoulement

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4893422A (en) * 1987-09-05 1990-01-16 Robert Krups Stiftung & Co. Kg. Steam iron with water softening facility
US4969393A (en) * 1987-09-05 1990-11-13 Robert Krups Stifting & Co. KG Appliance with water softening facility
US4893422B1 (fr) * 1987-09-05 1992-03-03 Krups Stiftung
EP0645488A1 (fr) * 1993-09-24 1995-03-29 Seb S.A. Procédé de repassage d'un article textile à gestion automatique du cycle de vapeur, et appareil de repassage pour la mise en oeuvre dudit procédé
WO1996022045A1 (fr) * 1995-01-19 1996-07-25 Kenwood Marks Limited Bouilloire
GB2308135A (en) * 1995-12-15 1997-06-18 Singer Co Nv Steam treating garments:water supply
US5680810A (en) * 1996-08-09 1997-10-28 Sham; John C. K. Steam toaster oven
WO2000006945A1 (fr) * 1998-07-29 2000-02-10 Marcello Ferrante Procede permettant de faire varier automatiquement la pression d'utilisation dans les generateurs de vapeur
US6178671B1 (en) * 1998-09-22 2001-01-30 U.S. Philips Corporation Steam iron with calcification indication
EP1138235A1 (fr) * 2000-03-29 2001-10-04 Moulinex S.A. Appareil électroménager comportant une cartouche amovible de traitement de l'eau
WO2002027246A1 (fr) * 2000-09-27 2002-04-04 Koninklijke Philips Electronics N.V. Element chauffant d'un ecoulement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2496709A (en) * 2011-11-21 2013-05-22 Huiyang Allan Plastic & Electric Ind Co Ltd Food Steamer with detachable water tank

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