Household steam appliance having a scale-preventing device
AssigneeSeb S.A.
InventorsJean Pierre Debourg, Denis Daulasim, Jean Claude Ledion
Life of this patent
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Abstract
A method and device for preventing the formation of scale in an electric appliance for producing steam, which appliance includes a reservoir for holding a quantity of water and a steam generation member for effecting a substantially instantaneous generation of steam; and a scale preventing device. Scale formation is prevented by heating water upstream of the reservoir to a temperature and for a time sufficient to precipitate minerals present in the water into a form which allows the precipitated minerals to be expelled from the appliance with steam generated by said steam generation member.
Claims22
An electric appliance for producing steam, said appliance comprising:
- a reservoir for holding a quantity of water;
- steam generation means for effecting a substantially instantaneous generation of steam;
- and a scale preventing device, wherein said scale preventing device is connected and operative for heating water upstream of said reservoir by an amount sufficient to precipitate minerals present in the water into a form which allows the precipitated minerals to be expelled from the appliance with steam generated by said steam generation means.
A method for precipitating minerals dissolved in water in an electric appliance in which steam is generated substantially instantaneously and is then expelled from the appliance, said method comprising preheating a selected quantity of water, prior to steam generation, to a temperature and for a time sufficient to precipitate minerals present in the water into a form which allows the precipitated minerals to be expelled from the appliance with the generated steam.
Dependencies are inferred from the claim text.