Textiles: ironing or smoothing – Smoothing implements – Flatirons
Patent
1998-05-18
1999-11-16
Izaguirre, Ismael
Textiles: ironing or smoothing
Smoothing implements
Flatirons
38 7783, D06F 7520, D06F 7538
Patent
active
059835362
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to electric steam irons which comprise a sole having a base heated by means of an electric resistance and an ironing plate mounted below the base, a so-called principal vaporization chamber provided in the base, closed by a cover and supplied by water by means of an injection device through an opening provided in the cover, and a chamber for distributing steam in communication with steam outlet holes pierced in the plate.
DESCRIPTION OF THE RELATED ART
In known steam irons of this type, the steam distribution chamber is provided in the upper surface of the heating base, at the periphery of the base and outside the principal vaporization chamber, being separated from the latter by a partition, and communicating with the vaporization chamber through at least one opening provided in the partition; the distribution chamber comprises steam distribution openings corresponding to steam outlet holes pierced in the ironing plate. This type of iron has the great drawback of not being able to provide perfect sealing between the principal vaporization chamber and the distribution chamber. Thus, as a result of improper fabrication or mounting, a certain play can be present between the cover and the partition separating the two chambers, such that unvaporized water can pass directly from the vaporization chamber to the distribution chamber, giving rise to the risk of projection of droplets of water through the outlet holes. Projection of water moistens the laundry, which detracts from the quality of pressing, and after several thermal cycles, small platelets of calculus pass into the distribution chamber, finally plugging the distribution openings, and hence the outlet holes.
SUMMARY OF THE INVENTION
The invention has particularly for its object to overcome these drawbacks and to provide a steam iron, of the type described above, whose sole involves an improved design permitting high quality ironing, suitable for mass production and at reduced cost.
According to the invention, the principal vaporization chamber comprises at least one steam passage which opens on the lower surface of the base and which is arranged such that the vapor moves into said principal vaporization chamber along a path suitable to promote the vaporization of the water before reaching said passage, and the steam distribution chamber is arranged in the lower surface of the base and is in communication with the outlet of said steam passage.
Thus, the provision of the steam distribution chamber in the lower surface of the heating base, and no longer in the upper surface of the latter as in the prior art, whilst communicating in a simple manner with the principal vaporization chamber thanks to the opening of the passage, now permits overcoming the problem of sealing between the two chambers particularly if there has been improper production or mounting of the closing cover. Moreover, the heating base being obtained by molding, the provision of the distribution chamber directly in the lower surface of the base permits greatly simplifying the existing mold.
According to another important characteristic of the invention, the principal vaporization chamber being delimited by a peripheral partition on which bears the cover and comprising a plurality of steam passages, these passages are constituted by vertical chimneys arranged about the periphery of said peripheral partition, opening into the steam distribution chamber and proceeding upward toward the cover by leaving on at least one portion a small space with said cover so as to permit the passage of the steam through said space in the upper portion of each of the chimneys.
Thus, thanks to this steam passage in the upper portion of the chimneys, the unvaporized droplets of water can almost not at all leave these chimneys, and hence pass into the subjacent distribution chamber, thereby avoiding any risk of projection of water through the outlet holes, and thus any blocking of the distribution chamber. Moreover, this escape of steam through th
REFERENCES:
patent: 3919793 (1975-11-01), Toft et al.
patent: 4233763 (1980-11-01), McMullen
patent: 4837952 (1989-06-01), Hennuy et al.
patent: 5146700 (1992-09-01), Prosser
De Maneville Guy
Fourny Jacky Rene Paul
Izaguirre Ismael
Moulinex (S.A.)
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