Textiles: ironing or smoothing – Smoothing implements – Flatirons
Patent
1995-04-27
1997-01-14
Izaguirre, Ismael
Textiles: ironing or smoothing
Smoothing implements
Flatirons
D06F 7518
Patent
active
055927645
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to the technical field of apparatus for evaporating fluids and in particular to the field of steam pressing irons.
The present invention concerns on the one hand an anti-calefaction layer arranged in an evaporation chamber and on the other hand a process for fabricating such a layer intended equally to evaporate a pressing liquid, in this case generally water.
PRIOR ART
It is already known in the prior art to form anti-calefaction layers notably by supplying special coatings which are sprayed or applied with a brush such as sodium silicate, solutions of ceramic materials, of silicate or of silica. These coatings are in general applied to evaporation chambers.
These products or other equivalent products are known for their hydrophilic and wettability properties assuring a spreading and a diffusion of the water on the base of the evaporation chamber. One thus obtains a better evaporation of the water, translating into a reduction in the emission of water in liquid form by the intermediary of steam outlets situated under the sole plate of a pressing iron, for example.
It is equally known to utilize mineral fiber or synthetic fabrics, disposed in the evaporation chamber. The fabrics are generally maintained in place by mechanical means. These latters are constituted by springs, rivets or a retention grid.
The different solutions provided by the prior art do not permit however sufficient limiting of the calefaction in the evaporation chambers. Calefaction is produced in general by bringing a liquid into contact with a very hot surface. The projection of a small quantity of liquid on such a surface provokes the appearance of drops which move randomly on said surface and which are only evaporated after a relatively long time interval. The contact between a liquid drop and the hot surface generates steam which lodges between said surface and the base of said drop which is directed toward this surface. The cushion of steam thus formed aids movement of the drop on the hot surface and considerably reduces evaporation.
Calefaction phenomena increase the duration of evaporation and consequently reduce the effectiveness of known coatings. These latters, in particular, sprayed coatings are poorly resistant to the acidity often presented by the fluid to be evaporated. This is notably the case for water.
Known coatings of the sodium silicate type or other equivalent products also present a resistance which one can qualify as insufficient to thermal shocks and a limited adherence to the base of the evaporation chamber. One can also note a marked tendency for dissolution of these products in water, thus strongly reducing the useful life of pressing irons.
In addition, the fabric fibers utilized in the prior art are maintained in place by the intermediary of various mechanical means. These latters considerably increase the complexity of fabrication or of formation of said evaporation layers. Moreover, this more complicated production is linked to the utilization of a large number of parts. These different factors are responsible for a significant fabrication cost. This is particularly the case during fabrication of pressing iron sole plates comprising an evaporation chamber furnished with such a coating.
The object assigned to the invention aims in consequence to remedy the different inconveniences enumerated previously and to furnish a device for generating steam of which the evaporation quality is improved.
The object of the present invention aims to furnish a device for generating steam comprising an evaporation chamber furnished with an evaporation base permitting rapid evaporation of a liquid while limiting the calefaction phenomenon.
The object of the present invention also aims to furnish a device for generating this steam which presents, besides a reduction in the calefaction phenomenon, a base which is almost insensitive to a possible acidity of the liquid to be evaporated.
Another object of the present invention aims to furnish a mechanically strong base of an evapor
REFERENCES:
patent: 2683320 (1954-07-01), Morton
patent: 2792652 (1957-05-01), Dawson
patent: 3218741 (1965-11-01), Martin
patent: 3499237 (1970-03-01), Piper
patent: 3694942 (1972-10-01), Vondracek et al.
patent: 5390432 (1995-02-01), Boulud et al.
Boulud Henry
Brandolini Jean-Louis
Izaguirre Ismael
Seb S.A.
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