EP3897278B1 - Steam hair styling apparatus - Google Patents

Steam hair styling apparatus Download PDF

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Publication number
EP3897278B1
EP3897278B1 EP19827734.5A EP19827734A EP3897278B1 EP 3897278 B1 EP3897278 B1 EP 3897278B1 EP 19827734 A EP19827734 A EP 19827734A EP 3897278 B1 EP3897278 B1 EP 3897278B1
Authority
EP
European Patent Office
Prior art keywords
steam
chamber
vaporisation
hairstyling apparatus
hydrophobic layer
Prior art date
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Application number
EP19827734.5A
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German (de)
French (fr)
Other versions
EP3897278A1 (en
Inventor
Stéphane Poncet
Régis FEREYRE
Mathias GANEM
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
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Publication of EP3897278A1 publication Critical patent/EP3897278A1/en
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Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D1/00—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor
    • A45D1/02—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with means for internal heating, e.g. by liquid fuel
    • A45D1/04—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with means for internal heating, e.g. by liquid fuel by electricity
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D1/00—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D1/00—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor
    • A45D1/02—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with means for internal heating, e.g. by liquid fuel
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D19/00—Devices for washing the hair or the scalp; Similar devices for colouring the hair
    • A45D19/16—Surface treatment of hair by steam, oil, or the like
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D2/00—Hair-curling or hair-waving appliances ; Appliances for hair dressing treatment not otherwise provided for
    • A45D2/001—Hair straightening appliances
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D1/00—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor
    • A45D2001/008—Curling-tongs, i.e. tongs for use when hot; Curling-irons, i.e. irons for use when hot; Accessories therefor with vapor generation, e.g. steam
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45F—TRAVELLING OR CAMP EQUIPMENT: SACKS OR PACKS CARRIED ON THE BODY
    • A45F2200/00—Details not otherwise provided for in A45F
    • A45F2200/05—Holder or carrier for specific articles
    • A45F2200/0516—Portable handheld communication devices, e.g. mobile phone, pager, beeper, PDA, smart phone

Definitions

  • the present invention relates to the field of styling appliances, and more particularly steam-generating styling appliances.
  • Styling devices generally consist of two jaws articulated together and facing each other, each having a treatment surface, at least one of which is heated, the other allowing a strand of hair to be brought in. hair in contact with the heated surface.
  • the articulated jaws generally comprise a gripping area of the device at the level of the end comprising the articulation, in order to be able to handle the device and in particular to be able to pivot the jaws towards a closed position, so as to pinch a lock of hair.
  • hair shaping for example straightening, is carried out by pinching a strand of hair at the root, then sliding the styling device along the strand, from the root hair towards the tip.
  • treatment surfaces can be placed on the jaws, depending on the desired hair shaping.
  • treatment surfaces with complementary shapes that are substantially planar for smoothing, curved for curling, or embossed for embossing will be used.
  • the documents EP2449909 Or WO2014064660 describe, for example, styling appliances comprising a liquid reservoir, and in which a jaw comprises a vaporization system, and a steam distribution system towards a strand of hair.
  • a liquid typically water or a cosmetic hair product, is stored in the tank, and injected into the vaporization system comprising a chamber, via a pipe.
  • the liquid passes into the vapor state and can reach the distribution system, comprising a plurality of slot-shaped orifices oriented so as to project the steam on a section of hair pinched between the two treatment surfaces.
  • the styling device in order to improve the ergonomic and aesthetic properties of the styling devices, it is appropriate to make the styling device more compact by reducing in particular the volume of the vaporization system.
  • reducing the volume of the vaporization chamber has the consequence of reducing the lifespan of the styling device, because scaling will occur more quickly, typically at a point of injection of the liquid at the end of the pipe in the vaporization chamber.
  • An objective of the invention is to propose a solution to the problems identified, and in particular to improve the lifespan of a styling device, particularly with regard to scaling, without reducing its compactness, and in particular by maintaining a low height of the vaporization chamber.
  • the internal surface of the vaporization chamber is covered at least in part by a hydrophobic layer, that is to say a layer which does not allow itself, or only slightly, to get wet. by the liquid, said layer being at least positioned under the injection point, the latter being formed by the free end of the injection pipe.
  • a hydrophobic layer that is to say a layer which does not allow itself, or only slightly, to get wet. by the liquid, said layer being at least positioned under the injection point, the latter being formed by the free end of the injection pipe.
  • the steam hairdressing appliance 1 generally comprises a first jaw 2 and a second jaw 3 arranged facing each other and articulated together, by means of a hinge type articulation 20.
  • the maximum opening angle ⁇ (not illustrated) between the first and the second jaw is between 5° and 60°, preferably between 10° and 20°, and still preferably approximately equal to 15°.
  • a first treatment surface is carried by the first jaw 2 and a second treatment surface 4 is carried by the second jaw 3, the first and the second surfaces being intended to pinch a lock of hair.
  • the first treatment surface and the second treatment surface 4 are generally complementary surfaces. They may have different shapes depending on the desired use of the styling device 1, and are preferably interchangeable. Typically, the treatment surfaces are flat for use of the styling device 1 as a straightening device, or curved (not shown) for use as a curling device or wavy (not shown) for use as an embossing device. A curling device is for example described in the document EP0619087 .
  • the treatment surfaces can also be uneven, that is to say include a plurality of protrusions such as teeth or pins (not shown).
  • the steam styling appliance also includes a liquid reservoir, typically a water reservoir (not shown on the figure). figure 1 ), or a reservoir containing a cosmetic agent, which can be embedded in one of the jaws, or alternatively be arranged at a distance from the device in a so-called remote base, as envisaged in the document EP3025610 .
  • a liquid reservoir typically a water reservoir (not shown on the figure). figure 1 ), or a reservoir containing a cosmetic agent, which can be embedded in one of the jaws, or alternatively be arranged at a distance from the device in a so-called remote base, as envisaged in the document EP3025610 .
  • the liquid reservoir is in fluid communication with a liquid vaporization system 7 via an injection pipe 74.
  • the liquid reservoir is included in the jaw comprising the vaporization system of the liquid liquid 7.
  • the vaporization system 7 comprises at least one vaporization chamber 71, called the first vaporization chamber or main vaporization chamber, occupying a first single volume, that is to say a defined volume without discontinuity or without obstacle or barrier.
  • the single volume can be substantially parallelepiped having for example a rectangular, square, or trapezoidal section. This provides a good compromise between the compactness and efficiency of the vaporization system.
  • the internal surface of the vaporization chamber 71 is called the surface of the lower wall of the vaporization chamber 71, that is to say the wall forming the bottom of the vaporization chamber 71. Thus, it is primarily on this internal surface that the fluid will be deposited by the injection pipe 74 to be transformed into steam.
  • a so-called free end of the injection pipe 74 forms an injection point in the main vaporization chamber 71.
  • the injection pipe 74 projects inside the vaporization chamber 71, and the liquid contained in the tank can be injected into the main vaporization chamber 71 at this injection point.
  • the liquid contained in the tank is water, or a cosmetic product.
  • the hairdressing appliance further comprises a steam distribution system 7' which is in communication with the vaporization system 7 and comprises one or more steam distribution orifices 75 towards a strand of hair.
  • the distribution system 7' can for example comprise a distribution chamber 76 in steam communication with the vaporization chamber 71, and in which the at least one steam distribution orifice 75 is arranged.
  • the distribution chamber 76 can extend laterally to the vaporization system 7, preferably over substantially the entire length of the vaporization system 7. This makes it possible to provide a compromise between the compactness and efficiency of the vaporization systems 7 and distribution systems 7. '.
  • the vaporization chamber 71 is preferably a compartment heated by a heating means 8, for example a heating means 8 placed in contact with the vaporization chamber 71, so that vaporization of the liquid injected into the vaporization chamber 71 can take place, independently of the heating of other components of the hairdressing appliance 1.
  • the heating means 8 can for example be positioned under the vaporization system 7 as is apparent from the exploded view of the figure 1 .
  • the heating means 8 can be arranged against the largest exterior surface of the vaporization system 7, preferably placed opposite the distribution orifices 75, and extend so as to be pressed at least partially against the side surfaces of the system vaporization 7.
  • vaporization is effective in the vaporization system 7 and in the vapor distribution system 7'.
  • the vaporization system 7 has a maximum external volume of 110x35x12.5 mm, and has an internal volume sufficient for storage of scale contained in at least 35 liters of hard water with a hardness of 28°f.
  • the heating means 8 is for example designed to vaporize water in a sequence of 10 seconds continuously and 10 seconds of rest with a flow rate around 1 g/min ⁇ 0.5 g/min.
  • the vaporization system 7 can be made of a metal, an alloy or any heat-conducting material. Typically, the vaporization system 7 is made of aluminum and can be made by molding or extrusion.
  • the vaporization system 7 may comprise several parts, in particular at least one cover.
  • the vaporization system 7 comprises a first part comprising the vaporization chamber 71 and pressed against the heating means 8, on which a second part is placed, in this case a cover, comprising orifices, connected to the distribution orifices steam 75.
  • the different parts are sealed, for example by a silicone seal.
  • a spring blade allows the heating means 8 to be crushed by the vaporization system 7, in order to guarantee permanent contact and optimal operation.
  • the heating means 8 can typically be an electrical resistance known as a Positive Temperature Coefficient (PTC) or a ceramic, but more generally any system making it possible to heat the vaporization chamber 71 in accordance with the desired goal.
  • PTC Positive Temperature Coefficient
  • the heating means 8 may comprise two heating elements, arranged laterally against each side of the vaporization system 7.
  • one of the two heating elements is placed between an exterior side surface of the vaporization chamber 71 and an exterior surface of the system steam distribution system 7', in order to heat the vaporization system 7 and the distribution system 7' simultaneously in a reduced space requirement.
  • the heating means 8 can be regulated by a thermistor, for example with a negative temperature coefficient or NTC, operating as a temperature probe, preferably arranged above the injection point.
  • the thermistor can allow better safety of the hairdressing appliance 1 by blocking the injection of liquid under particular conditions, for example depending on the temperature of the heating means 8.
  • a low temperature limit is around 95°C and a high temperature limit of 130°C, or according to a reduced temperature range, a low temperature limit of 105°C and a high temperature limit of 120°C, or even 110°C.
  • the injection pipe 74 is arranged substantially in the center of the vaporization chamber 71.
  • the end of the injection pipe 74 forming the injection point is arranged substantially at the first quarter of the length of the vaporization chamber. vaporization 71.
  • the injection pipe 74 has an outer wall spaced at least 1 mm from the inner wall of the vaporization chamber 71, and the height of the vaporization chamber is greater than 8 mm, in order to limit a deposit of scale from the free end of the injection pipe 74 and therefore premature blockage.
  • the injection pipe 74 may be made of a material comprising or coated with a material to which scale adheres poorly, so as to limit scale deposition.
  • the material chosen may be polytetrafluoroethylene (PTFE, also known under the registered trademark Teflon ® ) which has the advantage of having excellent non-stick properties while being very resistant to heat.
  • PTFE polytetrafluoroethylene
  • Teflon ® polytetrafluoroethylene
  • at least one internal wall of the injection pipe 74 is coated with PTFE, so that the injection pipe 74 is resistant to high temperatures, in particular above 300° C. and has an internal wall with a coefficient of friction very low, which limits the deposit of scale on the internal wall of the injection pipe 74.
  • the injection pipe 74 preferably has a large internal section to avoid premature blockage of the free end of the injection pipe 74 for example.
  • the internal section can typically have a diameter greater than 3 mm. Preferably greater than 4 mm.
  • the wall of the injection pipe 74 can advantageously have a thickness greater than 1 mm.
  • a ring with an internal section of 6 mm and an external section of 7 mm in PPS (polyphenylene sulphide) can be added to the injection pipe 74, in order to limit the heat transfer to the internal wall of the injection pipe 74.
  • a ratio between the height of the vaporization chamber 71 and the diameter of the internal section of the injection pipe 74 is between 0.55 and 0.75, typically, the ratio is approximately 0.6 for a height of 4.9 mm and a diameter internal of 3 mm.
  • these dimensions have been optimized in order to guarantee the best possible resistance to scaling while containing the dimensions of the different components.
  • the portion forming the free end of the injection pipe 74 can have a specific shape making it possible to concentrate any accumulation of scale in a specific area while providing an area where the liquid can continue to enter the vaporization chamber 71 without being hampered by the accumulation of scale.
  • the injection pipe 74 is beveled at the free end forming the injection point as is illustrated in Figure 4A .
  • the injection pipe 74 may comprise an opening extending substantially along the injection pipe from the free end forming the injection point.
  • the opening has a shape allowing the liquid coming from the reservoir to flow into the vaporization chamber 71 even in the event of accumulation and deposit of scale at the free end of the injection pipe 74.
  • the opening of the injection pipe 74 is a cutout on a half-section of the injection pipe 74, extending along an axis substantially parallel to the injection pipe 74.
  • the injection pipe 74 is arranged in the vaporization chamber 71 so that the cutout is on the side opposite the wall forming the bottom of the vaporization chamber 71.
  • the vaporization chamber 71 is closed by a plate forming a cover, this means that the cutout of the pipe 74 is then oriented towards the plate forming the cover.
  • the injection pipe 74 is distinct from the vaporization chamber 71, that is to say it is not the same part.
  • the injection pipe 74 projects inside the vaporization chamber 71.
  • the opening of the injection pipe 74 comprises at least one slot extending along an axis substantially parallel to the injection pipe 74.
  • the opening may comprise two slots extending on either side of the injection pipe 74.
  • the internal surface of the vaporization chamber 71 is covered at least partly by a hydrophobic layer 9 positioned under the injection point.
  • the hydrophobic layer 9 is then distinct from the injection pipe 74.
  • the hydrophobic layer 9 makes it possible not to generate evaporation below the injection point but to push the evaporation further into the evaporation chamber 71, in order to do not store tartar deposits below the injection site.
  • the hydrophobic layer 9 is characterized by a high surface tension.
  • the hydrophobic layer 9 comprises polytetrafluoroethylene (PTFE).
  • PTFE polytetrafluoroethylene
  • PTFE is a material resistant to high temperatures (in particular above 300°C) and has a very low coefficient of friction, which limits the deposit of scale at the injection point since water cannot remain there.
  • the hydrophobic layer 9 is positioned only under the injection point.
  • the hydrophobic layer 9 can cover a surface between 10mm 2 and 2000mm 2 , preferably between 100mm 2 and 1000mm 2 , and more preferably between 500mm 2 and 600mm 2 .
  • the hydrophobic layer 9 can cover the internal surface forming a bottom of the vaporization chamber 71, over an area of approximately 552mm 2 .
  • the hydrophobic layer 9 may have a planar shape, preferably substantially rectangular or triangular. It can also take a three-dimensional shape defined for example by inclined planes, making it possible to improve the sliding of the liquid to move the point of evaporation away from the free end of the injection pipe 74. Such a three-dimensional shape can also contribute to distribute the liquid well when it arrives in the vaporization chamber, breaking up the large drops and distributing them into smaller drops over the entire internal surface of the vaporization chamber 71. Thus, the efficiency of vaporization is improved while reducing the risk of scaling (blocking) of the device. In the embodiment where the hydrophobic layer 9 has a three-dimensional shape, the shape of the hydrophobic layer 9 can also be produced during the manufacture of the vaporization chamber 71, typically by integrating the shape into the molding.
  • the hydrophobic layer 9 has for example a pyramid shape.
  • the hydrophobic layer 9 may have the shape of a truncated pyramid.
  • the possible hydrophobic layer 9 is formed by applying a hydrophobic material to an internal surface of the vaporization chamber 71.
  • the hydrophobic material can be applied in the manner of a paint or a coating or vaporized on the internal surface of the vaporization chamber 71.
  • the hydrophobic layer 9 is an element attached to the vaporization chamber 71.
  • the attached element is held in position in the vaporization chamber 71 by an immobilization device comprising a centering element 710 of the attached element relative to the injection point.
  • the centering element 710 comprises a half-centering pin 710a formed in the vaporization chamber 71 and intended to cooperate with a notch 9a of complementary shape formed in the added element 9.
  • the internal surface of the vaporization chamber 71 comprises a hydrophilic layer 10, that is to say a layer characterized by a low surface tension.
  • the hydrophilic layer 10 extends over all or part of the internal surface of the vaporization chamber 71.
  • the hydrophilic layer 10 can be positioned only under the injection point, in the sense that only a surface under the injection point is covered with the hydrophilic layer 10.
  • the hydrophilic layer 10 extends over the entire internal surface. of the vaporization chamber 71, so as to maximize diffusion of the liquid.
  • the hydrophilic layer 10 comprises a woven material, for example a glass fabric, which makes it possible to remarkably limit the heating phenomenon.
  • the vaporization chamber 71 comprises a hydrophilic layer 10 covered at least partly by a hydrophobic layer 9.
  • the liquid injected at the injection point falls in the form of a drop on the hydrophobic layer 9, and remains in the form of a sphere due to the high surface tension of the hydrophobic material constituting the hydrophobic layer 9, this sphere then sliding towards the hydrophilic layer 10, at a distance from the injection point.
  • the hydrophilic layer 10 having a low surface tension, the drop of water can evaporate instantly. This reduces the appearance of tartar which will in any case be deposited, if necessary, at a distance from the injection point.
  • the liquid vaporization system 7 may also include a second vaporization chamber or secondary vaporization chamber 72, in fluid communication with the first vaporization chamber 71 and occupies a second distinct volume.
  • the first vaporization chamber 71 is then arranged upstream of the second vaporization chamber 72 in the direction of passage of the vapor.
  • the transformation of the liquid injected into the vaporization chamber 71 into vapor is carried out in at least two distinct vaporization chambers (71,72). This makes it possible to effectively retain unwanted tartar and to improve the resistance to limescale of the styling device 1 and therefore its duration of use.
  • the second vaporization chamber or secondary vaporization chamber 72 includes discontinuities or obstacles through the presence of baffles 73 to create a labyrinth-type path for the vapor.
  • baffle 73 is meant any obstacle or barrier placed in the chamber creating uneven movements of the steam, zigzag for example, reducing the speed of passage in the secondary vaporization chamber 72, and increasing contact with the surfaces of the different walls of the chamber 72. This makes it possible to vaporize any drops of liquid, and thus to ensure total vaporization of the liquid, the heat exchange surface being increased by the presence of the baffles 73.
  • the baffles 73 can for example be distributed parallel to each other. This allows the passage of steam according to a regular geometry, therefore trapping scale evenly in the second vaporization chamber 72.
  • the first volume occupied by the first vaporization chamber 71 is greater than the second volume occupied by the second vaporization chamber 72, or even at least twice greater, so as to allow rapid vaporization in the first volume, and not to not reduce the compactness of the vaporization system 7.
  • the possible distribution chamber 76 can be arranged laterally to the vaporization chamber 71 and to the secondary vaporization chamber 72, preferably over substantially the entire length of the vaporization system 7.
  • the injection pipe 74 comprises an opening with a cutout on a half-section, and the internal surface of the vaporization chamber 71 is covered with a hydrophobic layer 9 covering all or part of the internal surface of the vaporization chamber 71.
  • a first instant T1 typically during a first use of the styling device 1
  • the liquid coming from the reservoir is injected into the vaporization chamber 71 by the injection pipe 74, at the level of the end free forming an initial injection point 11.
  • the injected water evaporates on contact with the hydrophobic layer 9, at a vaporization point distant from the initial injection point 11, by a rapid increase in temperature.
  • the injected liquid water may contain minerals, a progressive accumulation of limescale or scale takes place at the level of the end forming the initial injection point 11. A progressive deposition of scale may take place inside the pipe. injection, until obstruction of the extremity.
  • a plug of scale 12 obstructs the end of the pipe injection 74.
  • the water then flows into the vaporization chamber 71 at another injection point 11', located upstream of the injection pipe 74 relative to the initial injection point 11.
  • the water can possibly flow on either side of the injection pipe 74, or over the scale plug 12.
  • the injection point 11' gradually shifts along the cutout of the injection pipe 74 throughout the use of the styling device 1, depending on the accumulation of tartar .
  • the moment when the injection point finds itself obstructed by scale is remarkably prolonged in time, since it is necessary to wait until the entire length of the cutout of the injection pipe 74 is obstructed by scale so that water injection can no longer occur.
  • the resistance of the device to scaling is considerably improved.
  • the injection pipe 74 comprises an opening with a slot at the free end, and the internal surface of the vaporization chamber 71 is covered with a hydrophobic layer 9 covering all or part of the internal surface of the vaporization chamber. vaporization 71.
  • the liquid in coming from the reservoir is injected into the vaporization chamber 71 by the injection pipe 74, at the level of the free end forming an initial injection point 11.
  • the injected water evaporates on contact with the hydrophobic layer 9, at a vaporization point distant from the initial injection point 11, by a rapid increase in temperature.
  • the injected liquid water may contain minerals, a progressive accumulation of limescale takes place at the end forming the initial injection point 10.
  • a progressive deposition of scale may take place inside the injection pipe 74 , until an obstruction of the extremity.
  • a plug of scale 12 obstructs the end of the injection pipe 74.
  • the water then flows into the vaporization chamber 71 at another injection point 11', located upstream of the injection pipe relative to the initial injection point 11
  • the opening includes two slots on either side of the injection pipe 74
  • the water can flow at two injection points on either side of the injection pipe. injection 74.
  • the injection point 11' gradually shifts along the slot throughout the use of the styling device 1, depending on the accumulation of tartar.
  • the moment when the injection point finds itself obstructed by scale is remarkably prolonged in time, since it is necessary to wait until the entire length of the cutout of the injection pipe 74 is obstructed by scale so that water injection can no longer occur.
  • the resistance of the device to scaling is considerably improved.
  • the addition of an opening on the injection pipe 74 and/or the presence of a hydrophobic layer 9 at the injection point allows an increase in the lifespan of the device 1 by better resistance to scaling.

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Dermatology (AREA)
  • General Health & Medical Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Cosmetics (AREA)
  • Cleaning And Drying Hair (AREA)
  • Irons (AREA)

Description

DOMAINE DE L'INVENTIONFIELD OF THE INVENTION

La présente invention concerne le domaine des appareils à coiffer, et plus spécialement des appareils à coiffer générant de la vapeur.The present invention relates to the field of styling appliances, and more particularly steam-generating styling appliances.

ETAT DE LA TECHNIQUESTATE OF THE ART

Les appareils à coiffer sont généralement constitués de deux mâchoires articulées entre elles et en regard l'une de l'autre, présentant chacune une surface de traitement, dont l'une au moins est chauffée, l'autre permettant d'amener une mèche de cheveux en contact avec la surface chauffée. Les mâchoires articulées comprennent généralement une zone de préhension de l'appareil au niveau de l'extrémité comprenant l'articulation, afin de pouvoir manier l'appareil et notamment de pouvoir faire pivoter les mâchoires vers une position de fermeture, de sorte à pincer une mèche de cheveux.Styling devices generally consist of two jaws articulated together and facing each other, each having a treatment surface, at least one of which is heated, the other allowing a strand of hair to be brought in. hair in contact with the heated surface. The articulated jaws generally comprise a gripping area of the device at the level of the end comprising the articulation, in order to be able to handle the device and in particular to be able to pivot the jaws towards a closed position, so as to pinch a lock of hair.

Dans un fonctionnement général, une mise en forme des cheveux, par exemple un lissage, s'effectue en pinçant une mèche de cheveux au niveau de la racine, puis en faisant glisser l'appareil à coiffer le long de la mèche, de la racine des cheveux vers la pointe.In general operation, hair shaping, for example straightening, is carried out by pinching a strand of hair at the root, then sliding the styling device along the strand, from the root hair towards the tip.

Différentes formes de surfaces de traitement peuvent être disposées sur les mâchoires, selon la mise en forme des cheveux voulue. Typiquement, on utilisera des surfaces de traitement aux formes complémentaires sensiblement planes pour un lissage, courbes pour un bouclage, ou gaufrées pour un gaufrage.Different shapes of treatment surfaces can be placed on the jaws, depending on the desired hair shaping. Typically, treatment surfaces with complementary shapes that are substantially planar for smoothing, curved for curling, or embossed for embossing will be used.

Il est également possible de projeter de la vapeur sur les cheveux pour améliorer la mise en forme des cheveux. Les documents EP2449909 ou WO2014064660 décrivent par exemple des appareils à coiffer comprenant un réservoir de liquide, et dans lesquels une mâchoire comprend un système de vaporisation, et un système de distribution de vapeur vers une mèche de cheveux. Un liquide, typiquement de l'eau ou un produit cosmétique pour cheveux, est stocké dans le réservoir, et injecté dans le système de vaporisation comprenant une chambre, par une canalisation. Sous l'action de moyens de chauffage, au contact de la chambre de vaporisation, le liquide passe à l'état de vapeur et peut atteindre le système de distribution, comprenant une pluralité d'orifices en forme de fente orientés de sorte à projeter la vapeur sur une mèche de cheveux pincée entre les deux surfaces de traitement. Cependant, une augmentation rapide de la température du liquide, qui peux contenir des minéraux, dans la chambre de vaporisation, peut entrainer un dépôt progressif de tartre ou de calcaire à l'intérieur ou à une extrémité de la canalisation, jusqu'à une obstruction. Ce phénomène a pour conséquence d'entrainer un disfonctionnement de l'appareil à coiffer et de réduire la durée de vie de l'appareil à coiffer.It is also possible to project steam on the hair to improve the shaping of the hair. The documents EP2449909 Or WO2014064660 describe, for example, styling appliances comprising a liquid reservoir, and in which a jaw comprises a vaporization system, and a steam distribution system towards a strand of hair. A liquid, typically water or a cosmetic hair product, is stored in the tank, and injected into the vaporization system comprising a chamber, via a pipe. Under the action of heating means, in contact with the vaporization chamber, the liquid passes into the vapor state and can reach the distribution system, comprising a plurality of slot-shaped orifices oriented so as to project the steam on a section of hair pinched between the two treatment surfaces. However, a rapid increase in the temperature of the liquid, which may contain minerals, in the vaporization chamber, can lead to a progressive deposition of scale or limestone inside or at one end of the pipe, leading to an obstruction. . This phenomenon results in a malfunction of the styling appliance and reduce the life of the styling appliance.

De plus, dans le but d'améliorer les propriétés ergonomiques et esthétiques des appareils à coiffer, il convient de rendre l'appareil à coiffer plus compact en réduisant notamment le volume du système de vaporisation. Cependant, la réduction du volume de la chambre de vaporisation a pour conséquence de réduire la durée de vie de l'appareil à coiffer, car un entartrage aura lieu plus rapidement, typiquement au niveau d'un point d'injection du liquide à l'extrémité de la canalisation dans la chambre de vaporisation.Furthermore, in order to improve the ergonomic and aesthetic properties of the styling devices, it is appropriate to make the styling device more compact by reducing in particular the volume of the vaporization system. However, reducing the volume of the vaporization chamber has the consequence of reducing the lifespan of the styling device, because scaling will occur more quickly, typically at a point of injection of the liquid at the end of the pipe in the vaporization chamber.

Pour réduire les risques d'entartrage des appareils, il est préconisé d'utiliser de l'eau déminéralisée. Malheureusement, une telle solution est contraignante pour les utilisateurs et en pratique peu appliquée, ce qui implique que les appareils restent soumis aux risques d'entartrage et qu'il convient de trouver une solution technique plus qu'une solution d'utilisation.To reduce the risk of devices scaling, it is recommended to use demineralized water. Unfortunately, such a solution is restrictive for users and in practice rarely applied, which means that the devices remain subject to the risk of scaling and that it is necessary to find a technical solution rather than a usage solution.

Il a ainsi été proposé d'ajouter à l'appareil à coiffer un moyen de récupération et d'évacuation du tartre accumulé au sein de la chambre de vaporisation. Un tel dispositif est décrit par exemple dans le document FR2987242 , qui propose un récipient collecteur comprenant de la laine de roche pour absorber le tartre et une lame racleuse à l'extrémité du récipient permettant de racler la surface de la chambre de vaporisation. Cependant, un tel dispositif est complexe et diminue la compacité de l'appareil à coiffer.It has thus been proposed to add to the styling device a means of recovering and evacuating the tartar accumulated within the vaporization chamber. Such a device is described for example in the document FR2987242 , which offers a collecting container comprising rock wool to absorb scale and a scraper blade at the end of the container for scraping the surface of the vaporization chamber. However, such a device is complex and reduces the compactness of the styling device.

Il existe donc toujours un besoin d'une solution permettant d'augmenter la durée de vie d'un appareil à coiffer vis-à-vis de l'entartrage, sans en complexifier la structure.There is therefore still a need for a solution to increase the lifespan of a styling device with regard to scaling, without making its structure more complex.

RESUME DE L'INVENTIONSUMMARY OF THE INVENTION

Un objectif de l'invention est de proposer une solution aux problèmes identifiés, et notamment d'améliorer la durée de vie d'un appareil à coiffer, vis-à-vis notamment de l'entartrage, sans diminuer sa compacité, et notamment en conservant une faible hauteur de la chambre de vaporisation.An objective of the invention is to propose a solution to the problems identified, and in particular to improve the lifespan of a styling device, particularly with regard to scaling, without reducing its compactness, and in particular by maintaining a low height of the vaporization chamber.

Selon l'invention, il est proposé un appareil de coiffure à vapeur pour mettre en forme des cheveux comprenant :

  • une première mâchoire et une deuxième mâchoire, disposées en regard l'une de l'autre et articulées entre elles, une première surface de traitement étant portée par la première mâchoire et une deuxième surface de traitement étant portée par la deuxième mâchoire, les première et deuxième surfaces de traitement étant configurées pour pincer au moins une mèche de cheveux,
  • un réservoir de liquide, la première et/ou la deuxième mâchoire comprenant en outre
  • un système de vaporisation du liquide en vapeur, comprenant au moins une chambre de vaporisation communiquant par l'intermédiaire d'un tuyau d'injection avec le réservoir de liquide, le tuyau d'injection ayant une extrémité libre formant un point d'injection du liquide dans la chambre de vaporisation,
  • un système de distribution de la vapeur provenant du système de vaporisation, comprenant au moins un orifice de distribution de la vapeur en direction de l'au moins une mèche de cheveux,
  • caractérisé en ce que la chambre de vaporisation comprend une surface interne recouverte au moins en partie par une couche hydrophobe positionnée sous le point d'injection.
According to the invention, a steam hairdressing device is proposed for shaping hair comprising:
  • a first jaw and a second jaw, arranged facing each other and articulated together, a first treatment surface being carried by the first jaw and a second treatment surface being carried by the second jaw, the first and second treatment surfaces being configured to pinch at least one strand of hair,
  • a liquid reservoir, the first and/or the second jaw further comprising
  • a system for vaporizing the liquid into vapor, comprising at least one vaporization chamber communicating via an injection pipe with the liquid reservoir, the injection pipe having a free end forming an injection point of the liquid in the vaporization chamber,
  • a steam distribution system coming from the vaporization system, comprising at least one steam distribution orifice towards the at least one strand of hair,
  • characterized in that the vaporization chamber comprises an internal surface covered at least partly by a hydrophobic layer positioned under the injection point.

En d'autres termes, selon l'invention, la surface interne de la chambre de vaporisation est recouverte au moins en partie par une couche hydrophobe, c'est-à-dire une couche qui ne se laisse pas, ou que peu, mouiller par le liquide, ladite couche étant au moins positionnée sous le point d'injection, ce dernier étant formé par l'extrémité libre du tuyau d'injection. La présence de la couche hydrophobe sous le point d'injection va éviter au liquide de se vaporiser en cet endroit précis, en étant repoussé plus loin. Ainsi, la vaporisation ne se produit pas au niveau du point d'injection, ce qui évite la formation de tartre ou de dépôt solide au niveau du point d'injection. Cela évite donc toute obstruction du point d'injection (du tuyau d'injection) et donc tout dysfonctionnement prématuré de l'appareil, augmentant ainsi sa durée de vie et sa fiabilité.In other words, according to the invention, the internal surface of the vaporization chamber is covered at least in part by a hydrophobic layer, that is to say a layer which does not allow itself, or only slightly, to get wet. by the liquid, said layer being at least positioned under the injection point, the latter being formed by the free end of the injection pipe. The presence of the hydrophobic layer under the injection point will prevent the liquid from vaporizing in this precise location, by being pushed further away. Thus, vaporization does not occur at the injection point, which avoids the formation of scale or solid deposits at the injection point. This therefore avoids any obstruction of the injection point (of the injection pipe) and therefore any premature malfunction of the device, thus increasing its lifespan and reliability.

L'appareil de coiffure proposé peut comprendre les caractéristiques suivantes, prises seules ou en combinaison :

  • la couche hydrophobe comprend du polytétrafluoroéthylène (PTFE) ;
  • la couche hydrophobe est positionnée uniquement sous le point d'injection et sur une surface comprise entre 10 mm2 et 2000 mm2, de préférence comprise entre 100 mm2 et 1000 mm2, et de préférence encore comprise entre 500 mm2 et 600 mm2, par exemple 552 mm2 ;
  • la couche hydrophobe présente une forme plane, de préférence sensiblement rectangulaire ou triangulaire ;
  • ou de manière alternative, la couche hydrophobe présente une forme tridimensionnelle comprenant des plans inclinés, par exemple présente une forme de pyramide ou tronc de pyramide ;
  • la couche hydrophobe est un élément rapporté dans la chambre de vaporisation et maintenu en position par un dispositif d'immobilisation comprenant un élément de centrage dudit élément rapporté par rapport au point d'injection, de préférence l'élément de centrage comprend un demi-pion de centrage formé dans la chambre de vaporisation et destiné à coopérer avec une encoche de forme complémentaire ménagée dans l'élément rapporté ;
  • ou de manière alternative la chambre de vaporisation est obtenue par un moulage d'un matériau métallique, et dans lequel la couche hydrophobe est formée par application d'un matériau hydrophobe sur la surface interne de la chambre de vaporisation, par exemple à la manière d'une peinture ou d'un revêtement ;
  • la surface interne de la chambre de vaporisation comprend en outre une couche hydrophile ;
  • la couche hydrophile est recouverte au moins en partie par la couche hydrophobe ;
  • la couche hydrophile comprend un matériau tissé, et préférentiellement un tissu de verre ;
  • le tuyau d'injection est biseauté au niveau de l'extrémité libre formant le point d'injection ;
  • le tuyau d'injection présente une portion coupée de moitié ;
  • le système de vaporisation comprend en outre une chambre de vaporisation secondaire en communication de fluide avec la chambre de vaporisation, ladite chambre secondaire comprenant une pluralité de chicanes ;
  • le système de distribution de la vapeur comprend une chambre de distribution dans laquelle est disposé l'au moins un orifice de distribution de la vapeur, ladite chambre de distribution étant en communication de vapeur avec la chambre de vaporisation, de préférence la chambre de distribution est disposée latéralement aux chambres de vaporisation et chambre de vaporisation secondaire ;
  • le système de vaporisation comprend un moyen de chauffage, situé au moins partiellement en dessous de la chambre de vaporisation et comprenant une résistance électrique dite à Coefficient de Température Positif (CTP) ou une céramique ;
  • la première et la deuxième surface de traitement sont sensiblement complémentaires et de forme plane, ou courbée, ou gaufrée.
The proposed hair styling device may include the following features, taken alone or in combination:
  • the hydrophobic layer comprises polytetrafluoroethylene (PTFE);
  • the hydrophobic layer is positioned only under the injection point and on a surface between 10 mm 2 and 2000 mm 2 , preferably between 100 mm 2 and 1000 mm 2 , and more preferably between 500 mm 2 and 600 mm 2 , for example 552 mm 2 ;
  • the hydrophobic layer has a planar shape, preferably substantially rectangular or triangular;
  • or alternatively, the hydrophobic layer has a three-dimensional shape comprising inclined planes, for example has the shape of a pyramid or truncated pyramid;
  • the hydrophobic layer is an element inserted into the vaporization chamber and held in position by an immobilization device comprising an element centering said insert relative to the injection point, preferably the centering element comprises a half-centering pin formed in the vaporization chamber and intended to cooperate with a notch of complementary shape formed in the insert;
  • or alternatively the vaporization chamber is obtained by molding a metallic material, and in which the hydrophobic layer is formed by applying a hydrophobic material to the internal surface of the vaporization chamber, for example in the manner of 'a paint or coating;
  • the internal surface of the vaporization chamber further comprises a hydrophilic layer;
  • the hydrophilic layer is covered at least partly by the hydrophobic layer;
  • the hydrophilic layer comprises a woven material, and preferably a glass fabric;
  • the injection pipe is beveled at the free end forming the injection point;
  • the injection pipe has a portion cut in half;
  • the vaporization system further comprises a secondary vaporization chamber in fluid communication with the vaporization chamber, said secondary chamber comprising a plurality of baffles;
  • the steam distribution system comprises a distribution chamber in which the at least one steam distribution orifice is arranged, said distribution chamber being in steam communication with the vaporization chamber, preferably the distribution chamber is arranged laterally to the vaporization chambers and secondary vaporization chamber;
  • the vaporization system comprises a heating means, located at least partially below the vaporization chamber and comprising an electrical resistance called a Positive Temperature Coefficient (PTC) or a ceramic;
  • the first and the second treatment surface are substantially complementary and of planar, or curved, or embossed shape.

DESCRIPTIF DES FIGURESDESCRIPTION OF FIGURES

D'autres caractéristiques, buts et avantages de l'invention, apparaîtront à la lecture de la description détaillée qui va suivre, et en regard des dessins annexés, donnés à titre d'exemples non limitatifs et sur lesquels :

  • La figure 1 illustre une vue d'ensemble d'un appareil à coiffer tel que décrit dans la présente invention.
  • La figure 2 représente une vue en perspective d'un système de vaporisation selon un mode de réalisation de la présente invention.
  • La figure 3 représente une vue de dessus du système de vaporisation selon le mode de réalisation de la figure 2.
  • La figure 4A est une vue en coupe du système de vaporisation représenté à la figure 3 selon l'axe A-A, selon un premier mode de réalisation de la chambre de vaporisation.
  • La figure 4B est une vue en coupe du système de vaporisation représenté à la figure 3 selon l'axe B-B, selon le mode de réalisation de la chambre de vaporisation de la figure 4A.
  • La figure 5 est une vue en coupe du système de vaporisation représenté à la figure 3 selon l'axe A-A, selon un deuxième mode de réalisation de la chambre de vaporisation.
  • La figure 6A est une vue en coupe du système de vaporisation selon le mode de réalisation de la figure 5, à un premier instant.
  • La figure 6B est une vue en coupe du système de vaporisation selon le mode de réalisation de la figure 5, à un second instant, postérieur au premier instant illustré à la figure 6A.
  • La figure 7 est une vue en coupe du système de vaporisation représenté à la figure 3 selon l'axe A-A, selon un quatrième mode de réalisation de la chambre de vaporisation.
  • La figure 8A est une vue en coupe du système de vaporisation selon le mode de réalisation de la figure 7, à un premier instant.
  • La figure 8B est une vue en coupe du système de vaporisation selon le mode de réalisation de la figure 7, à un second instant, postérieur au premier instant illustré à la figure 8A.
Other characteristics, aims and advantages of the invention will appear on reading the detailed description which follows, and with reference to the appended drawings, given by way of non-limiting examples and in which:
  • There figure 1 illustrates an overview of a styling apparatus as described in the present invention.
  • There figure 2 represents a perspective view of a vaporization system according to one embodiment of the present invention.
  • There Figure 3 represents a top view of the vaporization system according to the embodiment of the figure 2 .
  • There Figure 4A is a sectional view of the vaporization system shown in Figure 3 along the axis AA, according to a first embodiment of the vaporization chamber.
  • There Figure 4B is a sectional view of the vaporization system shown in Figure 3 along the axis BB, according to the embodiment of the vaporization chamber of the Figure 4A .
  • There Figure 5 is a sectional view of the vaporization system shown in Figure 3 along the axis AA, according to a second embodiment of the vaporization chamber.
  • There Figure 6A is a sectional view of the vaporization system according to the embodiment of the Figure 5 , at a first moment.
  • There Figure 6B is a sectional view of the vaporization system according to the embodiment of the Figure 5 , at a second instant, subsequent to the first instant illustrated in Figure 6A .
  • There figure 7 is a sectional view of the vaporization system shown in Figure 3 along the axis AA, according to a fourth embodiment of the vaporization chamber.
  • There Figure 8A is a sectional view of the vaporization system according to the embodiment of the figure 7 , at a first moment.
  • There Figure 8B is a sectional view of the vaporization system according to the embodiment of the figure 7 , at a second instant, subsequent to the first instant illustrated in Figure 8A .

DESCRIPTIF DETAILLE DE L'INVENTIONDETAILED DESCRIPTION OF THE INVENTION

La figure 1 illustre une vue en perspective éclatée d'un appareil de coiffure à vapeur pour mettre en forme des cheveux. Comme expliqué précédemment, l'appareil de coiffure à vapeur 1 comprend généralement une première mâchoire 2 et une deuxième mâchoire 3 disposées en regard l'une de l'autre et articulées entre elles, au moyen d'une articulation de type charnière 20. L'angle maximal α (non illustré) d'ouverture entre la première et la deuxième mâchoire est compris entre 5° et 60°, préférentiellement compris entre 10° et 20°, et préférentiellement encore environ égal à 15°.There figure 1 illustrates an exploded perspective view of a steam styling device for shaping hair. As explained previously, the steam hairdressing appliance 1 generally comprises a first jaw 2 and a second jaw 3 arranged facing each other and articulated together, by means of a hinge type articulation 20. The maximum opening angle α (not illustrated) between the first and the second jaw is between 5° and 60°, preferably between 10° and 20°, and still preferably approximately equal to 15°.

Une première surface de traitement est portée par la première mâchoire 2 et une deuxième surface de traitement 4 est portée par la deuxième mâchoire 3, la première et la deuxième surface étant destinées à pincer une mèche de cheveux.A first treatment surface is carried by the first jaw 2 and a second treatment surface 4 is carried by the second jaw 3, the first and the second surfaces being intended to pinch a lock of hair.

La première surface de traitement et la deuxième surface de traitement 4 sont généralement des surfaces complémentaires. Elles peuvent posséder des formes différentes selon l'utilisation de l'appareil à coiffer 1 souhaitée, et sont de préférence interchangeables. Typiquement, les surfaces de traitement sont plates pour une utilisation de l'appareil à coiffer 1 comme appareil à lisser, ou courbes (non illustrées) pour une utilisation comme appareil à boucler ou ondulées (non illustrées) pour une utilisation comme appareil à gaufrer. Un appareil à boucler est par exemple décrit dans le document EP0619087 . Les surfaces de traitement peuvent également être accidentées, c'est-à-dire comporter une pluralité d'excroissances comme par exemple des dents ou des picots (non illustrés).The first treatment surface and the second treatment surface 4 are generally complementary surfaces. They may have different shapes depending on the desired use of the styling device 1, and are preferably interchangeable. Typically, the treatment surfaces are flat for use of the styling device 1 as a straightening device, or curved (not shown) for use as a curling device or wavy (not shown) for use as an embossing device. A curling device is for example described in the document EP0619087 . The treatment surfaces can also be uneven, that is to say include a plurality of protrusions such as teeth or pins (not shown).

L'appareil de coiffure à vapeur comprend également un réservoir de liquide, typiquement un réservoir d'eau (non représenté sur la figure 1), ou un réservoir contenant un agent cosmétique, qui peut être embarqué dans une des mâchoires, ou de manière alternative être agencé à distance de l'appareil dans une base dite déportée, comme cela est envisagé dans le document EP3025610 .The steam styling appliance also includes a liquid reservoir, typically a water reservoir (not shown on the figure). figure 1 ), or a reservoir containing a cosmetic agent, which can be embedded in one of the jaws, or alternatively be arranged at a distance from the device in a so-called remote base, as envisaged in the document EP3025610 .

Comme illustré sur les figures 2 et 3, le réservoir de liquide est en communication de fluide avec un système de vaporisation du liquide 7 par l'intermédiaire d'un tuyau d'injection 74. De manière avantageuse, le réservoir de liquide est compris dans la mâchoire comprenant le système de vaporisation du liquide 7.As illustrated on the figures 2 And 3 , the liquid reservoir is in fluid communication with a liquid vaporization system 7 via an injection pipe 74. Advantageously, the liquid reservoir is included in the jaw comprising the vaporization system of the liquid liquid 7.

Le système de vaporisation 7 comprend au moins une chambre de vaporisation 71, dite première chambre de vaporisation ou chambre de vaporisation principale, occupant un premier volume unique, c'est-à-dire un volume défini sans discontinuité ou sans obstacle ou barrière. Le volume unique peut être substantiellement parallélépipédique ayant par exemple une section rectangulaire, carrée, ou trapézoïdale. Ceci permet de fournir un bon compromis entre la compacité et l'efficacité du système vaporisation. On appelle surface interne de la chambre de vaporisation 71 la surface de la paroi inférieure de la chambre de vaporisation 71, c'est-à-dire la paroi formant le fond de la chambre de vaporisation 71. Ainsi, c'est prioritairement sur cette surface interne que le fluide sera déposé par le tuyau d'injection 74 pour être transformé en vapeur.The vaporization system 7 comprises at least one vaporization chamber 71, called the first vaporization chamber or main vaporization chamber, occupying a first single volume, that is to say a defined volume without discontinuity or without obstacle or barrier. The single volume can be substantially parallelepiped having for example a rectangular, square, or trapezoidal section. This provides a good compromise between the compactness and efficiency of the vaporization system. The internal surface of the vaporization chamber 71 is called the surface of the lower wall of the vaporization chamber 71, that is to say the wall forming the bottom of the vaporization chamber 71. Thus, it is primarily on this internal surface that the fluid will be deposited by the injection pipe 74 to be transformed into steam.

Une extrémité dite libre du tuyau d'injection 74 forme un point d'injection dans la chambre de vaporisation principale 71. De préférence, le tuyau d'injection 74 fait saillie à l'intérieur de la chambre de vaporisation 71, et le liquide contenu dans le réservoir peut être injecté dans la chambre de vaporisation principale 71 au niveau de ce point d'injection. Typiquement, le liquide contenu dans le réservoir est de l'eau, ou un produit cosmétique.A so-called free end of the injection pipe 74 forms an injection point in the main vaporization chamber 71. Preferably, the injection pipe 74 projects inside the vaporization chamber 71, and the liquid contained in the tank can be injected into the main vaporization chamber 71 at this injection point. Typically, the liquid contained in the tank is water, or a cosmetic product.

L'appareil de coiffure comprend en outre un système de distribution de la vapeur 7' qui est en communication avec le système de vaporisation 7 et comporte un ou plusieurs orifices de distribution 75 de la vapeur en direction d'une mèche de cheveux.The hairdressing appliance further comprises a steam distribution system 7' which is in communication with the vaporization system 7 and comprises one or more steam distribution orifices 75 towards a strand of hair.

Le système de distribution 7' peut par exemple comprendre une chambre de distribution 76 en communication de vapeur avec la chambre de vaporisation 71, et dans laquelle est disposé l'au moins un orifice de distribution 75 de la vapeur. La chambre de distribution 76 peut s'étendre latéralement au système de vaporisation 7, préférentiellement sur sensiblement toute la longueur du système de vaporisation 7. Ceci permet de fournir un compromis entre la compacité et l'efficacité des systèmes de vaporisation 7 et de distribution 7'.The distribution system 7' can for example comprise a distribution chamber 76 in steam communication with the vaporization chamber 71, and in which the at least one steam distribution orifice 75 is arranged. The distribution chamber 76 can extend laterally to the vaporization system 7, preferably over substantially the entire length of the vaporization system 7. This makes it possible to provide a compromise between the compactness and efficiency of the vaporization systems 7 and distribution systems 7. '.

La chambre de vaporisation 71 est de préférence un compartiment chauffé par un moyen de chauffage 8, par exemple un moyen de chauffage 8 disposé au contact de la chambre de vaporisation 71, de sorte qu'une vaporisation du liquide injecté dans la chambre de vaporisation 71 peut avoir lieu, de manière indépendante du chauffage d'autres composants de l'appareil de coiffure 1.The vaporization chamber 71 is preferably a compartment heated by a heating means 8, for example a heating means 8 placed in contact with the vaporization chamber 71, so that vaporization of the liquid injected into the vaporization chamber 71 can take place, independently of the heating of other components of the hairdressing appliance 1.

Le moyen de chauffage 8 peut par exemple être positionné sous le système de vaporisation 7 comme cela ressort de l'éclaté de la figure 1.The heating means 8 can for example be positioned under the vaporization system 7 as is apparent from the exploded view of the figure 1 .

Le moyen de chauffage 8 peut être agencé contre la plus grande surface extérieure du système de vaporisation 7, préférentiellement placé à l'opposé des orifices de distribution 75, et s'étendre de sorte à être plaqué au moins partiellement contre des surfaces latérales du système de vaporisation 7.The heating means 8 can be arranged against the largest exterior surface of the vaporization system 7, preferably placed opposite the distribution orifices 75, and extend so as to be pressed at least partially against the side surfaces of the system vaporization 7.

De manière générale, la vaporisation est effective dans le système de vaporisation 7 et dans le système de distribution de la vapeur 7'.Generally speaking, vaporization is effective in the vaporization system 7 and in the vapor distribution system 7'.

De préférence, le système de vaporisation 7 a un volume externe maximal de 110x35x12,5 mm, et possède un volume interne suffisant pour un stockage du tartre contenu dans au moins 35 litres d'eau dure et de dureté 28°f. Le moyen de chauffage 8 est par exemple prévu pour vaporiser de l'eau par séquence de 10 secondes continue et 10 secondes de repos avec un débit autour de 1 g/min ± 0.5 g/min.Preferably, the vaporization system 7 has a maximum external volume of 110x35x12.5 mm, and has an internal volume sufficient for storage of scale contained in at least 35 liters of hard water with a hardness of 28°f. The heating means 8 is for example designed to vaporize water in a sequence of 10 seconds continuously and 10 seconds of rest with a flow rate around 1 g/min ± 0.5 g/min.

Le système de vaporisation 7 peut être constitué d'un métal, d'un alliage ou de tout matériau conduisant la chaleur. Typiquement, le système de vaporisation 7 est en aluminium et peut être réalisé par moulage ou extrusion.The vaporization system 7 can be made of a metal, an alloy or any heat-conducting material. Typically, the vaporization system 7 is made of aluminum and can be made by molding or extrusion.

Le système de vaporisation 7 peut comprendre plusieurs parties, notamment au moins un couvercle. Selon la vue éclatée représentée figure 1, le système de vaporisation 7 comprend une première partie comprenant la chambre de vaporisation 71 et plaquée contre le moyen de chauffage 8, sur laquelle vient se poser une deuxième partie, en l'occurrence un couvercle, comprenant des orifices, reliés aux orifices de distribution de la vapeur 75. De préférence, les différentes parties sont scellées, par exemple par un joint de silicone.The vaporization system 7 may comprise several parts, in particular at least one cover. According to the exploded view shown figure 1 , the vaporization system 7 comprises a first part comprising the vaporization chamber 71 and pressed against the heating means 8, on which a second part is placed, in this case a cover, comprising orifices, connected to the distribution orifices steam 75. Preferably, the different parts are sealed, for example by a silicone seal.

De manière avantageuse, une lame ressort permet un écrasement du moyen de chauffage 8 par le système de vaporisation 7, afin de garantir un contact permanent et un fonctionnement optimal.Advantageously, a spring blade allows the heating means 8 to be crushed by the vaporization system 7, in order to guarantee permanent contact and optimal operation.

Le moyen de chauffage 8 peut être typiquement une résistance électrique dite à Coefficient de Température Positif (CTP) ou une céramique, mais plus généralement tout système permettant de chauffer la chambre de vaporisation 71 conformément au but recherché.The heating means 8 can typically be an electrical resistance known as a Positive Temperature Coefficient (PTC) or a ceramic, but more generally any system making it possible to heat the vaporization chamber 71 in accordance with the desired goal.

Alternativement, le moyen de chauffage 8 peut comporter deux éléments chauffants, agencés latéralement contre chaque côté du système de vaporisation 7. Avantageusement, un des deux éléments chauffants est plaqué entre une surface latérale extérieure de la chambre de vaporisation 71 et une surface extérieure du système de distribution de vapeur 7', afin de chauffer le système de vaporisation 7 et le système de distribution 7' simultanément dans un encombrement réduit.Alternatively, the heating means 8 may comprise two heating elements, arranged laterally against each side of the vaporization system 7. Advantageously, one of the two heating elements is placed between an exterior side surface of the vaporization chamber 71 and an exterior surface of the system steam distribution system 7', in order to heat the vaporization system 7 and the distribution system 7' simultaneously in a reduced space requirement.

Le moyen de chauffage 8 peut être régulé par une thermistance, par exemple à coefficient de température négatif ou CTN, fonctionnant comme une sonde de température, préférentiellement agencé au-dessus du point d'injection. La thermistance peut permettre une meilleure sécurité de l'appareil de coiffure 1 en bloquant l'injection de liquide dans des conditions particulières, par exemple selon la température du moyen de chauffage 8. Typiquement, une limite basse de température est environ 95°C et une limite haute de température 130°C, ou bien selon une plage de température réduite, une limite basse de température de 105°C et une limite haute de température de 120°C, voire de 110°C.The heating means 8 can be regulated by a thermistor, for example with a negative temperature coefficient or NTC, operating as a temperature probe, preferably arranged above the injection point. The thermistor can allow better safety of the hairdressing appliance 1 by blocking the injection of liquid under particular conditions, for example depending on the temperature of the heating means 8. Typically, a low temperature limit is around 95°C and a high temperature limit of 130°C, or according to a reduced temperature range, a low temperature limit of 105°C and a high temperature limit of 120°C, or even 110°C.

De manière avantageuse, le tuyau d'injection 74 est agencé sensiblement au centre de la chambre de vaporisation 71. L'extrémité du tuyau d'injection 74 formant le point d'injection est agencé sensiblement au premier quart de la longueur de la chambre de vaporisation 71. En effet, il convient de placer le point d'injection dans une zone de la chambre de vaporisation 71 où règne une température maximale et éloignée de parois internes de la chambre de vaporisation 71, afin d'améliorer la vaporisation du liquide injecté. Il convient également d'éloigner le point d'injection des moyens de distribution de vapeur 7' afin de limiter le risque d'éjecter de l'eau chaude qui n'aurait pas eu le temps de se vaporiser.Advantageously, the injection pipe 74 is arranged substantially in the center of the vaporization chamber 71. The end of the injection pipe 74 forming the injection point is arranged substantially at the first quarter of the length of the vaporization chamber. vaporization 71. In fact, it is appropriate to place the injection point in an area of the vaporization chamber 71 where a maximum temperature prevails and away from the internal walls of the vaporization chamber 71, in order to improve the vaporization of the liquid injected. It is also advisable to move the injection point away from the steam distribution means 7' in order to limit the risk of ejecting hot water which would not have had time to vaporize.

De préférence, le tuyau d'injection 74 a une paroi extérieure distante d'au moins 1 mm de la paroi interne de la chambre de vaporisation 71, et la hauteur de la chambre de vaporisation est supérieure à 8 mm, afin de limiter un dépôt de tartre dès l'extrémité libre du tuyau d'injection 74 et donc un bouchage prématuré.Preferably, the injection pipe 74 has an outer wall spaced at least 1 mm from the inner wall of the vaporization chamber 71, and the height of the vaporization chamber is greater than 8 mm, in order to limit a deposit of scale from the free end of the injection pipe 74 and therefore premature blockage.

Le tuyau d'injection 74 peut être composé d'un matériau comprenant un ou revêtu d'un matériau sur lequel le tartre adhère mal, de sorte à limiter un dépôt de tartre. Typiquement, le matériau choisi peut être du polytétrafluoroéthylène (PTFE, également connu sous la marque commerciale déposée Téflon®) qui présente l'avantage d'avoir d'excellentes propriétés anti adhérentes tout en étant très résistant à la chaleur. De préférence, au moins une paroi interne du tuyau d'injection 74 est revêtue de PTFE, de sorte que le tuyau d'injection 74 est résistant aux températures élevées, notamment supérieures à 300°C et possède une paroi interne avec un coefficient de friction très faible, ce qui limite un dépôt du tartre sur la paroi interne du tuyau d'injection 74.The injection pipe 74 may be made of a material comprising or coated with a material to which scale adheres poorly, so as to limit scale deposition. Typically, the material chosen may be polytetrafluoroethylene (PTFE, also known under the registered trademark Teflon ® ) which has the advantage of having excellent non-stick properties while being very resistant to heat. Preferably, at least one internal wall of the injection pipe 74 is coated with PTFE, so that the injection pipe 74 is resistant to high temperatures, in particular above 300° C. and has an internal wall with a coefficient of friction very low, which limits the deposit of scale on the internal wall of the injection pipe 74.

Le tuyau d'injection 74 présente de préférence une section interne importante pour éviter un bouchage prématuré de l'extrémité libre du tuyau d'injection 74 par exemple. La section interne peut typiquement présenter un diamètre supérieur à 3 mm. De préférence supérieur à 4 mm. Afin de limiter le transfert de chaleur des parois de la chambre de vaporisation 71 vers le liquide, la paroi du tuyau d'injection 74 peut avoir avantageusement une épaisseur supérieure à 1 mm. Une bague de section interne de 6 mm et externe de 7 mm en PPS (polysulfure de phénylène) peut être adjointe au tuyau d'injection 74, afin de limiter le transfert thermique à la paroi interne du tuyau d'injection 74.The injection pipe 74 preferably has a large internal section to avoid premature blockage of the free end of the injection pipe 74 for example. The internal section can typically have a diameter greater than 3 mm. Preferably greater than 4 mm. In order to limit the heat transfer from the walls of the vaporization chamber 71 to the liquid, the wall of the injection pipe 74 can advantageously have a thickness greater than 1 mm. A ring with an internal section of 6 mm and an external section of 7 mm in PPS (polyphenylene sulphide) can be added to the injection pipe 74, in order to limit the heat transfer to the internal wall of the injection pipe 74.

De préférence, un ratio entre la hauteur de la chambre de vaporisation 71 et le diamètre de la section interne du tuyau d'injection 74 est compris entre 0.55 et 0.75, typiquement, le ratio vaut environ 0.6 pour une hauteur de 4.9 mm et un diamètre interne de 3 mm. En effet, ces dimensions ont été optimisées afin de garantir la meilleure résistance à l'entartrage possible tout en contenant les dimensions des différents composants.Preferably, a ratio between the height of the vaporization chamber 71 and the diameter of the internal section of the injection pipe 74 is between 0.55 and 0.75, typically, the ratio is approximately 0.6 for a height of 4.9 mm and a diameter internal of 3 mm. In fact, these dimensions have been optimized in order to guarantee the best possible resistance to scaling while containing the dimensions of the different components.

Avantageusement, la portion formant l'extrémité libre du tuyau d'injection 74 peut avoir une forme spécifique permettant de concentrer l'accumulation éventuelle de tartre dans une zone spécifique tout en ménageant une zone où le liquide pourra continuer à entrer dans la chambre de vaporisation 71 sans être gêné par l'accumulation de tartre.Advantageously, the portion forming the free end of the injection pipe 74 can have a specific shape making it possible to concentrate any accumulation of scale in a specific area while providing an area where the liquid can continue to enter the vaporization chamber 71 without being hampered by the accumulation of scale.

Par exemple, le tuyau d'injection 74 est biseauté au niveau de l'extrémité libre formant le point d'injection comme cela est illustré à la figure 4A.For example, the injection pipe 74 is beveled at the free end forming the injection point as is illustrated in Figure 4A .

Alternativement ou de façon additionnelle, le tuyau d'injection 74 peut comprendre une ouverture s'étendant sensiblement le long du tuyau d'injection depuis l'extrémité libre formant le point d'injection. L'ouverture présente une forme permettant au liquide provenant du réservoir de s'écouler dans la chambre de vaporisation 71 même en cas d'accumulation et dépôt de tartre à l'extrémité libre du tuyau d'injection 74.Alternatively or additionally, the injection pipe 74 may comprise an opening extending substantially along the injection pipe from the free end forming the injection point. The opening has a shape allowing the liquid coming from the reservoir to flow into the vaporization chamber 71 even in the event of accumulation and deposit of scale at the free end of the injection pipe 74.

Dans un exemple de réalisation, l'ouverture du tuyau d'injection 74 est une découpe sur une demi-section du tuyau d'injection 74, s'étendant selon un axe sensiblement parallèle au tuyau d'injection 74. Dans l'exemple de réalisation illustré sur les figures 2 à 5, le tuyau d'injection 74 est agencé dans la chambre de vaporisation 71 de sorte que la découpe est du côté opposé à la paroi formant le fond de la chambre de vaporisation 71. Typiquement, dans un exemple de réalisation où la chambre de vaporisation 71 est fermée par une plaque formant un couvercle, cela signifie que la découpe du tuyau 74 est alors orientée vers la plaque formant le couvercle.In an exemplary embodiment, the opening of the injection pipe 74 is a cutout on a half-section of the injection pipe 74, extending along an axis substantially parallel to the injection pipe 74. In the example of realization illustrated on the figures 2 to 5 , the injection pipe 74 is arranged in the vaporization chamber 71 so that the cutout is on the side opposite the wall forming the bottom of the vaporization chamber 71. Typically, in an exemplary embodiment where the vaporization chamber 71 is closed by a plate forming a cover, this means that the cutout of the pipe 74 is then oriented towards the plate forming the cover.

Préférentiellement, comme on peut le voir sur les différentes figures, le tuyau d'injection 74 est distinct de la chambre de vaporisation 71, c'est-à-dire que ce n'est pas la même pièce. Le tuyau d'injection 74 fait saillie à l'intérieur de la chambre de vaporisation 71.Preferably, as can be seen in the different figures, the injection pipe 74 is distinct from the vaporization chamber 71, that is to say it is not the same part. The injection pipe 74 projects inside the vaporization chamber 71.

Dans un exemple de réalisation illustré sur la figure 7, l'ouverture du tuyau d'injection 74 comprend au moins une fente s'étendant selon un axe sensiblement parallèle au tuyau d'injection 74. De préférence, l'ouverture peut comprendre deux fentes s'étendant de part et d'autre du tuyau d'injection 74.In an exemplary embodiment illustrated on the figure 7 , the opening of the injection pipe 74 comprises at least one slot extending along an axis substantially parallel to the injection pipe 74. Preferably, the opening may comprise two slots extending on either side of the injection pipe 74.

La surface interne de la chambre de vaporisation 71 est recouverte au moins en partie par une couche hydrophobe 9 positionnée sous le point d'injection. La couche hydrophobe 9 est alors distincte du tuyau d'injection 74. La couche hydrophobe 9 permet de ne pas générer d'évaporation sous le point d'injection mais de repousser l'évaporation plus loin dans la chambre d'évaporation 71, afin de ne pas stocker de dépôt de tartre sous le point d'injection. En effet, la couche hydrophobe 9 est caractérisée par une tension de surface élevée.The internal surface of the vaporization chamber 71 is covered at least partly by a hydrophobic layer 9 positioned under the injection point. The hydrophobic layer 9 is then distinct from the injection pipe 74. The hydrophobic layer 9 makes it possible not to generate evaporation below the injection point but to push the evaporation further into the evaporation chamber 71, in order to do not store tartar deposits below the injection site. In fact, the hydrophobic layer 9 is characterized by a high surface tension.

De manière avantageuse, la couche hydrophobe 9 comprend du polytétrafluoro-éthylène (PTFE). En effet, le PTFE est un matériau résistant aux températures élevées (notamment supérieures à 300°C) et possède un coefficient de friction très faible, ce qui limite un dépôt du tartre au niveau du point d'injection puisque l'eau ne peut y rester.Advantageously, the hydrophobic layer 9 comprises polytetrafluoroethylene (PTFE). Indeed, PTFE is a material resistant to high temperatures (in particular above 300°C) and has a very low coefficient of friction, which limits the deposit of scale at the injection point since water cannot remain there.

Selon un exemple de réalisation, la couche hydrophobe 9 est positionnée uniquement sous le point d'injection. On entend par cela que seule une surface sous le point d'injection est recouverte par la couche hydrophobe 9, qui ne recouvre donc pas en totalité la surface interne de la chambre de vaporisation 71. En particulier, la couche hydrophobe 9 peut recouvrir une surface comprise entre 10mm2 et 2000mm2, de préférence comprise entre 100mm2 et 1000mm2, et de préférence encore comprise entre 500mm2 et 600mm2. Typiquement, la couche hydrophobe 9 peut recouvrir la surface interne formant un fond de la chambre de vaporisation 71, sur une surface d'environ 552mm2.According to an exemplary embodiment, the hydrophobic layer 9 is positioned only under the injection point. By this we mean that only a surface under the injection point is covered by the hydrophobic layer 9, which therefore does not completely cover the internal surface of the vaporization chamber 71. In particular, the hydrophobic layer 9 can cover a surface between 10mm 2 and 2000mm 2 , preferably between 100mm 2 and 1000mm 2 , and more preferably between 500mm 2 and 600mm 2 . Typically, the hydrophobic layer 9 can cover the internal surface forming a bottom of the vaporization chamber 71, over an area of approximately 552mm 2 .

La couche hydrophobe 9 peut présenter une forme plane, de préférence sensiblement rectangulaire ou triangulaire. Elle peut également prendre une forme tridimensionnelle définie par exemple par des plans inclinés, permettant d'améliorer le glissement du liquide pour éloigner le point d'évaporation de l'extrémité libre du tuyau d'injection 74. Une telle forme tridimensionnelle peut également contribuer à bien répartir le liquide lors de son arrivée dans la chambre de vaporisation, en cassant les grosses gouttes et en les répartissant en de plus petites gouttes sur toute la surface interne de la chambre de vaporisation 71. Ainsi, l'efficacité de la vaporisation est améliorée tout en diminuant le risque d'entartrage (de bouchage) de l'appareil. Dans le mode de réalisation où la couche hydrophobe 9 présente une forme tridimensionnelle, la forme de la couche hydrophobe 9 peut également être réalisée pendant la fabrication de la chambre de vaporisation 71, typiquement en intégrant la forme dans le moulage.The hydrophobic layer 9 may have a planar shape, preferably substantially rectangular or triangular. It can also take a three-dimensional shape defined for example by inclined planes, making it possible to improve the sliding of the liquid to move the point of evaporation away from the free end of the injection pipe 74. Such a three-dimensional shape can also contribute to distribute the liquid well when it arrives in the vaporization chamber, breaking up the large drops and distributing them into smaller drops over the entire internal surface of the vaporization chamber 71. Thus, the efficiency of vaporization is improved while reducing the risk of scaling (blocking) of the device. In the embodiment where the hydrophobic layer 9 has a three-dimensional shape, the shape of the hydrophobic layer 9 can also be produced during the manufacture of the vaporization chamber 71, typically by integrating the shape into the molding.

Dans un exemple de réalisation représenté sur les figures 4A et 4B, la couche hydrophobe 9 a par exemple une forme de pyramide. De manière alternative, la couche hydrophobe 9 peut présenter une forme de tronc de pyramide.In an exemplary embodiment shown on the Figures 4A and 4B , the hydrophobic layer 9 has for example a pyramid shape. Alternatively, the hydrophobic layer 9 may have the shape of a truncated pyramid.

Dans un exemple de réalisation, la couche hydrophobe 9 éventuelle est formée par application d'un matériau hydrophobe sur une surface interne de la chambre de vaporisation 71. Typiquement, le matériau hydrophobe peut être appliqué à la manière d'une peinture ou d'un revêtement ou vaporisé sur la surface interne de la chambre de vaporisation 71.In an exemplary embodiment, the possible hydrophobic layer 9 is formed by applying a hydrophobic material to an internal surface of the vaporization chamber 71. Typically, the hydrophobic material can be applied in the manner of a paint or a coating or vaporized on the internal surface of the vaporization chamber 71.

De manière avantageuse, la couche hydrophobe 9 est un élément rapporté dans la chambre de vaporisation 71. L'élément rapporté est maintenu en position dans la chambre de vaporisation 71 par un dispositif d'immobilisation comprenant un élément de centrage 710 de l'élément rapporté par rapport au point d'injection.Advantageously, the hydrophobic layer 9 is an element attached to the vaporization chamber 71. The attached element is held in position in the vaporization chamber 71 by an immobilization device comprising a centering element 710 of the attached element relative to the injection point.

Dans l'exemple de chambre de vaporisation 71 illustrée sur les figures 2 et 3, l'élément de centrage 710 comprend un demi-pion de centrage 710a formé dans la chambre de vaporisation 71 et destiné à coopérer avec une encoche 9a de forme complémentaire ménagée dans l'élément rapporté 9.In the example of vaporization chamber 71 illustrated on the figures 2 And 3 , the centering element 710 comprises a half-centering pin 710a formed in the vaporization chamber 71 and intended to cooperate with a notch 9a of complementary shape formed in the added element 9.

De manière alternative ou complémentaire, la surface interne de la chambre de vaporisation 71 comprend une couche hydrophile 10, c'est-à-dire une couche caractérisée par une tension de surface faible. La couche hydrophile 10 s'étend sur tout ou partie de la surface interne de la chambre de vaporisation 71.Alternatively or additionally, the internal surface of the vaporization chamber 71 comprises a hydrophilic layer 10, that is to say a layer characterized by a low surface tension. The hydrophilic layer 10 extends over all or part of the internal surface of the vaporization chamber 71.

La couche hydrophile 10 peut être positionnée uniquement sous le point d'injection, au sens où seule une surface sous le point d'injection est recouverte de la couche hydrophile 10. De préférence, la couche hydrophile 10 s'étend sur toute la surface interne de la chambre de vaporisation 71, de sorte à maximiser une diffusion du liquide.The hydrophilic layer 10 can be positioned only under the injection point, in the sense that only a surface under the injection point is covered with the hydrophilic layer 10. Preferably, the hydrophilic layer 10 extends over the entire internal surface. of the vaporization chamber 71, so as to maximize diffusion of the liquid.

Préférentiellement, la couche hydrophile 10 comprend un matériau tissé, par exemple un tissu de verre, ce qui permet de remarquablement limiter le phénomène de caléfaction.Preferably, the hydrophilic layer 10 comprises a woven material, for example a glass fabric, which makes it possible to remarkably limit the heating phenomenon.

Selon un exemple particulier de réalisation, illustré notamment sur les figures 4A et 4B, la chambre de vaporisation 71 comprend une couche hydrophile 10 recouverte au moins en partie par une couche hydrophobe 9. Dans ce mode de réalisation, le liquide injecté au niveau du point d'injection tombe sous forme de goutte sur la couche hydrophobe 9, et reste sous une forme de sphère de par la tension de surface élevée du matériau hydrophobe constituant la couche hydrophobe 9, cette sphère glissant alors vers la couche hydrophile 10, à distance du point d'injection. La couche hydrophile 10 présentant une faible tension de surface, la goutte d'eau peut s'évaporer instantanément. Cela réduit l'apparition de tartre qui sera en tout état de cause déposé le cas échéant à distance du point d'injection.According to a particular example of production, illustrated in particular on the Figures 4A and 4B , the vaporization chamber 71 comprises a hydrophilic layer 10 covered at least partly by a hydrophobic layer 9. In this embodiment, the liquid injected at the injection point falls in the form of a drop on the hydrophobic layer 9, and remains in the form of a sphere due to the high surface tension of the hydrophobic material constituting the hydrophobic layer 9, this sphere then sliding towards the hydrophilic layer 10, at a distance from the injection point. The hydrophilic layer 10 having a low surface tension, the drop of water can evaporate instantly. This reduces the appearance of tartar which will in any case be deposited, if necessary, at a distance from the injection point.

De manière avantageuse mais non obligatoire, et comme cela est notamment représenté sur les figures 2 et 3, le système de vaporisation de liquide 7 peut comprendre également une deuxième chambre de vaporisation ou chambre de vaporisation secondaire 72, en communication de fluide avec la première chambre de vaporisation 71 et occupe un deuxième volume distinct. La première chambre de vaporisation 71 est alors agencée en amont de la deuxième chambre de vaporisation 72 dans le sens du passage de la vapeur.In an advantageous but not obligatory manner, and as is particularly represented on the figures 2 And 3 , the liquid vaporization system 7 may also include a second vaporization chamber or secondary vaporization chamber 72, in fluid communication with the first vaporization chamber 71 and occupies a second distinct volume. The first vaporization chamber 71 is then arranged upstream of the second vaporization chamber 72 in the direction of passage of the vapor.

Dans ce mode de réalisation, la transformation du liquide injecté dans la chambre de vaporisation 71 en vapeur s'effectue dans au moins deux chambres de vaporisation (71,72) distinctes. Cela permet de retenir efficacement du tartre indésirable et d'améliorer la résistance au calcaire de l'appareil à coiffer 1 et par conséquent sa durée d'utilisation.In this embodiment, the transformation of the liquid injected into the vaporization chamber 71 into vapor is carried out in at least two distinct vaporization chambers (71,72). This makes it possible to effectively retain unwanted tartar and to improve the resistance to limescale of the styling device 1 and therefore its duration of use.

De préférence, la deuxième chambre de vaporisation ou chambre de vaporisation secondaire 72 comprend des discontinuités ou des obstacles par la présence de chicanes 73 pour créer un cheminement de type labyrinthe pour la vapeur.Preferably, the second vaporization chamber or secondary vaporization chamber 72 includes discontinuities or obstacles through the presence of baffles 73 to create a labyrinth-type path for the vapor.

On entend par chicane 73 tout obstacle ou barrière placée dans la chambre créant des déplacements accidentés de la vapeur, en zigzag par exemple, réduisant la vitesse de passage dans la chambre de vaporisation secondaire 72, et augmentant le contact avec les surfaces des différentes parois de la chambre 72. Ceci permet de vaporiser d'éventuelles gouttes de liquide, et ainsi d'assurer une vaporisation totale du liquide, la surface d'échange thermique étant augmentée par la présence des chicanes 73. Les chicanes 73 peuvent par exemple être réparties parallèles les unes aux autres. Ceci permet le passage de la vapeur selon une géométrie régulière, donc de piéger du tartre de façon homogène dans la deuxième chambre de vaporisation 72.By baffle 73 is meant any obstacle or barrier placed in the chamber creating uneven movements of the steam, zigzag for example, reducing the speed of passage in the secondary vaporization chamber 72, and increasing contact with the surfaces of the different walls of the chamber 72. This makes it possible to vaporize any drops of liquid, and thus to ensure total vaporization of the liquid, the heat exchange surface being increased by the presence of the baffles 73. The baffles 73 can for example be distributed parallel to each other. This allows the passage of steam according to a regular geometry, therefore trapping scale evenly in the second vaporization chamber 72.

De préférence, le premier volume occupé par la première chambre de vaporisation 71 est supérieur au deuxième volume occupé par la deuxième chambre de vaporisation 72, voire au moins deux fois supérieur, de sorte à permettre une vaporisation rapide dans le premier volume, et de ne pas réduire la compacité du système de vaporisation 7.Preferably, the first volume occupied by the first vaporization chamber 71 is greater than the second volume occupied by the second vaporization chamber 72, or even at least twice greater, so as to allow rapid vaporization in the first volume, and not to not reduce the compactness of the vaporization system 7.

Dans ce mode de réalisation, la chambre de distribution 76 éventuelle peut être disposée latéralement à la chambre de vaporisation 71 et à la chambre de vaporisation secondaire 72, préférentiellement sur sensiblement toute la longueur du système de vaporisation 7.In this embodiment, the possible distribution chamber 76 can be arranged laterally to the vaporization chamber 71 and to the secondary vaporization chamber 72, preferably over substantially the entire length of the vaporization system 7.

Un tel agencement et le fonctionnement correspondant sont décrits en détail dans le document EP2591698 .Such an arrangement and the corresponding operation are described in detail in the document EP2591698 .

Des exemples de réalisation particuliers représentant schématiquement le système de vaporisation 7 au cours d'un fonctionnement sont donnés aux figures 6A, 6B et 8A, 8B, afin d'illustrer les avantages procurés par les caractéristiques décrites précédemment.Particular examples of embodiment schematically representing the vaporization system 7 during operation are given in Figures 6A, 6B And 8A, 8B , in order to illustrate the advantages provided by the characteristics described above.

Dans un premier exemple de réalisation représenté sur les figures 6A et 6B, le tuyau d'injection 74 comprend une ouverture avec une découpe sur une demi-section, et la surface interne de la chambre de vaporisation 71 est recouverte d'une couche hydrophobe 9 recouvrant tout ou partie de la surface interne de la chambre de vaporisation 71. En fonctionnement, selon la figure 6A, à un premier instant T1, typiquement lors d'une première utilisation de l'appareil à coiffer 1, le liquide en provenance du réservoir est injecté dans la chambre de vaporisation 71 par le tuyau d'injection 74, au niveau de l'extrémité libre formant un point d'injection initial 11.In a first embodiment shown on the Figures 6A and 6B , the injection pipe 74 comprises an opening with a cutout on a half-section, and the internal surface of the vaporization chamber 71 is covered with a hydrophobic layer 9 covering all or part of the internal surface of the vaporization chamber 71. In operation, according to Figure 6A , at a first instant T1, typically during a first use of the styling device 1, the liquid coming from the reservoir is injected into the vaporization chamber 71 by the injection pipe 74, at the level of the end free forming an initial injection point 11.

L'eau injectée s'évapore au contact de la couche hydrophobe 9, en un point de vaporisation éloigné du point d'injection initial 11, par une augmentation rapide de la température. L'eau liquide injectée pouvant contenir des minéraux, une accumulation progressive de calcaire ou tartre a lieu au niveau de l'extrémité formant le point d'injection initial 11. Un dépôt progressif de tartre peut avoir lieu à l'intérieur du tuyau d'injection, jusqu'à une obstruction de l'extrémité.The injected water evaporates on contact with the hydrophobic layer 9, at a vaporization point distant from the initial injection point 11, by a rapid increase in temperature. The injected liquid water may contain minerals, a progressive accumulation of limescale or scale takes place at the level of the end forming the initial injection point 11. A progressive deposition of scale may take place inside the pipe. injection, until obstruction of the extremity.

Selon la figure 6B, à un instant T2 ultérieur à T1, par exemple après que plus de 10L d'eau dure, typiquement de dureté 28°f, a été injecté dans la chambre de vaporisation 71, un bouchon de tartre 12 obstrue l'extrémité du tuyau d'injection 74. L'eau s'écoule alors dans la chambre de vaporisation 71 au niveau d'un autre point d'injection 11', situé en amont du tuyau d'injection 74 par rapport au point d'injection initial 11. L'eau peut éventuellement s'écouler de part et d'autre du tuyau d'injection 74, ou par-dessus le bouchon de tartre 12.According to Figure 6B , at a time T2 subsequent to T1, for example after more than 10L of hard water, typically of hardness 28°f, has been injected into the vaporization chamber 71, a plug of scale 12 obstructs the end of the pipe injection 74. The water then flows into the vaporization chamber 71 at another injection point 11', located upstream of the injection pipe 74 relative to the initial injection point 11. The water can possibly flow on either side of the injection pipe 74, or over the scale plug 12.

Dans cet exemple de réalisation, le point d'injection 11' se décale progressivement le long de la découpe du tuyau d'injection 74 tout au long de l'utilisation de l'appareil à coiffer 1, en fonction de l'accumulation de tartre. En d'autres termes, le moment où le point d'injection se retrouve obstrué par du tartre est remarquablement prolongé dans le temps, puisqu'il faut attendre que toute la longueur de la découpe du tuyau d'injection 74 soit obstruée par du tartre pour que l'injection d'eau ne puisse plus se produire. Ainsi la résistance de l'appareil à l'entartrage est considérablement améliorée.In this exemplary embodiment, the injection point 11' gradually shifts along the cutout of the injection pipe 74 throughout the use of the styling device 1, depending on the accumulation of tartar . In other words, the moment when the injection point finds itself obstructed by scale is remarkably prolonged in time, since it is necessary to wait until the entire length of the cutout of the injection pipe 74 is obstructed by scale so that water injection can no longer occur. Thus the resistance of the device to scaling is considerably improved.

Dans un second exemple de réalisation représenté sur les figures 8A et 8B, le tuyau d'injection 74 comprend une ouverture avec fente au niveau de l'extrémité libre, et la surface interne de la chambre de vaporisation 71 est recouvert d'une couche hydrophobe 9 recouvrant tout ou partie de la surface interne de la chambre de vaporisation 71. En fonctionnement, selon la figure 8A, à un premier instant T1', typiquement lors d'une première utilisation de l'appareil à coiffer 1, le liquide en provenance du réservoir est injecté dans la chambre de vaporisation 71 par le tuyau d'injection 74, au niveau de l'extrémité libre formant un point d'injection initial 11.In a second embodiment shown on the Figures 8A and 8B , the injection pipe 74 comprises an opening with a slot at the free end, and the internal surface of the vaporization chamber 71 is covered with a hydrophobic layer 9 covering all or part of the internal surface of the vaporization chamber. vaporization 71. In operation, according to the Figure 8A , at a first moment T1', typically during a first use of the styling device 1, the liquid in coming from the reservoir is injected into the vaporization chamber 71 by the injection pipe 74, at the level of the free end forming an initial injection point 11.

De même que dans l'exemple précédent, l'eau injectée s'évapore au contact de la couche hydrophobe 9, en un point de vaporisation éloigné du point d'injection initial 11, par une augmentation rapide de la température. L'eau liquide injectée pouvant contenir des minéraux, une accumulation progressive de calcaire a lieu au niveau de l'extrémité formant le point d'injection initial 10. Un dépôt progressif de tartre peut avoir lieu à l'intérieur du tuyau d'injection 74, jusqu'à une obstruction de l'extrémité.As in the previous example, the injected water evaporates on contact with the hydrophobic layer 9, at a vaporization point distant from the initial injection point 11, by a rapid increase in temperature. The injected liquid water may contain minerals, a progressive accumulation of limescale takes place at the end forming the initial injection point 10. A progressive deposition of scale may take place inside the injection pipe 74 , until an obstruction of the extremity.

Selon la figure 8B, à un instant T2' ultérieur à T1', par exemple après que plus de 10 L d'eau dure, typiquement de dureté 28°f, a été injecté dans la chambre de vaporisation 71, un bouchon de tartre 12 obstrue l'extrémité du tuyau d'injection 74. L'eau s'écoule alors dans la chambre de vaporisation 71 au niveau d'un autre point d'injection 11', situé en amont du tuyau d'injection par rapport au point d'injection initial 11. Dans le cas particulier où l'ouverture comprend deux fentes de part et d'autre du tuyau d'injection 74, l'eau pourra s'écouler au niveau de deux points d'injection de part et d'autre du tuyau d'injection 74.According to Figure 8B , at a time T2' subsequent to T1', for example after more than 10 L of hard water, typically of hardness 28°f, has been injected into the vaporization chamber 71, a plug of scale 12 obstructs the end of the injection pipe 74. The water then flows into the vaporization chamber 71 at another injection point 11', located upstream of the injection pipe relative to the initial injection point 11 In the particular case where the opening includes two slots on either side of the injection pipe 74, the water can flow at two injection points on either side of the injection pipe. injection 74.

De même que dans l'exemple précédent, le point d'injection 11' se décale progressivement le long de la fente tout au long de l'utilisation de l'appareil à coiffer 1, en fonction de l'accumulation de tartre. En d'autres termes, le moment où le point d'injection se retrouve obstrué par du tartre est remarquablement prolongé dans le temps, puisqu'il faut attendre que toute la longueur de la découpe du tuyau d'injection 74 soit obstruée par du tartre pour que l'injection d'eau ne puisse plus se produire. Ainsi la résistance de l'appareil à l'entartrage est considérablement améliorée.As in the previous example, the injection point 11' gradually shifts along the slot throughout the use of the styling device 1, depending on the accumulation of tartar. In other words, the moment when the injection point finds itself obstructed by scale is remarkably prolonged in time, since it is necessary to wait until the entire length of the cutout of the injection pipe 74 is obstructed by scale so that water injection can no longer occur. Thus the resistance of the device to scaling is considerably improved.

Ainsi, l'ajout d'une ouverture sur le tuyau d'injection 74 et/ou la présence d'une couche hydrophobe 9 au niveau du point d'injection permettent une augmentation de la durée de vie de l'appareil 1 par une meilleure résistance à l'entartrage.Thus, the addition of an opening on the injection pipe 74 and/or the presence of a hydrophobic layer 9 at the injection point allows an increase in the lifespan of the device 1 by better resistance to scaling.

REFERENCES BIBLIOGRAPHIQUESBIBLIOGRAPHICAL REFERENCES

EP2449909 , WO2014064660 , FR2987242 , EP0619087 , EP3025610 , EP2591698 EP2449909 , WO2014064660 , FR2987242 , EP0619087 , EP3025610 , EP2591698

Claims (17)

  1. Steam hairstyling apparatus for shaping hair, comprising:
    - a first jaw (2) and a second jaw (3), arranged opposite one another and hinged together, a first treatment surface (4) being supported by the first jaw (2) and a second treatment surface being supported by the second jaw (3), the first and second treatment surfaces being configured to grip at least one lock of hair, and
    - a liquid reservoir, the first and/or second jaw (2, 3) additionally comprising:
    - a system (7) for vaporising the liquid to form steam, comprising at least one vaporisation chamber (71) which has an inner surface and is in communication via an injection tube (74) with the liquid reservoir, the injection tube (74) having a free end which forms a point for injecting the liquid into the vaporisation chamber (71),
    - a system (7') for dispensing the steam from the vaporisation system (7), comprising at least one steam dispensing port (75) directed towards the at least one lock of hair,
    characterised in that the inner surface of the vaporisation chamber (71) is at least partly covered by a hydrophobic layer (9) positioned beneath the injection point formed by the free end of the injection tube (74).
  2. Steam hairstyling apparatus (1) according to claim 1, wherein the hydrophobic layer (9) comprises polytetrafluoroethylene (PTFE).
  3. Hairstyling apparatus (1) according to any one of claims 1 or 2, wherein the hydrophobic layer (9) is positioned solely beneath the injection point and over an area of between 10 mm2 and 2000 mm2, preferably between 100 mm2 and 1000 mm2, and even more preferably between 500 mm2 and 600 mm2.
  4. Steam hairstyling apparatus (1) according to any one of claims 1 to 3, wherein the hydrophobic layer (9) has a flat shape, preferably a substantially rectangular or triangular shape.
  5. Steam hairstyling apparatus (1) according to any one of claims 1 to 3, wherein the hydrophobic layer (9) has a three-dimensional shape comprising inclined planes.
  6. Steam hairstyling apparatus (1) according to claim 5, wherein the hydrophobic layer (9) has a pyramid or truncated pyramid shape.
  7. Steam hairstyling apparatus (1) according to any one of claims 1 to 6, wherein the hydrophobic layer (9) is an element inserted into the vaporisation chamber (71) and held in position by an immobilisation device comprising an element (710) for centring said inserted element relative to the injection point.
  8. Steam hairstyling apparatus (1) according to claim 7, wherein the centering element (710) comprises a centering half-pin (710a) formed in the steaming chamber (71) and designed to cooperate with a complementarily shaped notch (9a) formed in the inserted element.
  9. Steam hairstyling apparatus (1) according to any one of claims 1 to 6, wherein the vaporisation chamber (71) is obtained by moulding a metallic material, and wherein the hydrophobic layer (9) is formed by applying a hydrophobic material to the inner surface of the vaporisation chamber (71), for example in the manner of a paint or a coating.
  10. Steam hairstyling apparatus (1) according to any one of claims 1 to 9, wherein the inner surface of the vaporisation chamber (71) further comprises a hydrophilic layer (10).
  11. Steam hairstyling apparatus (1) according to claim 10, wherein the hydrophilic layer (10) is covered at least in part by the hydrophobic layer (9).
  12. Steam hairstyling apparatus (1) according to claim 10 or 11, wherein the hydrophilic layer (10) comprises a woven material, and preferably a glass fabric.
  13. Steam hairstyling apparatus (1) according to any one of claims 1 to 12, wherein the injection tube (74) is bevelled at the free end forming the injection point.
  14. Steam hairstyling apparatus (1) according to any one of claims 1 to 13, wherein the injection tube (74) has a portion cut in half.
  15. Steam hairstyling apparatus (1) according to any one of claims 1 to 14, wherein the vaporisation system (7) further comprises a secondary vaporisation chamber (72) in fluid communication with the vaporisation chamber (71), said secondary chamber (72) comprising a plurality of baffles (73).
  16. Steam hairstyling apparatus (1) according to any one of claims 1 to 15, wherein the steam dispensing system (7') comprises a dispensing chamber (76) in which the at least one steam dispensing port (75) is arranged, said dispensing chamber (76) being in steam communication with the vaporisation chamber (71).
  17. Steam hairstyling apparatus (1) according to claims 15 and 16, wherein the dispensing chamber (76) is arranged laterally with respect to the vaporisation chamber (71) and the secondary vaporisation chamber (72).
EP19827734.5A 2018-12-20 2019-12-19 Steam hair styling apparatus Active EP3897278B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1873684A FR3090286B1 (en) 2018-12-20 2018-12-20 Steam styling device
PCT/EP2019/086491 WO2020127851A1 (en) 2018-12-20 2019-12-19 Steam hair-styling appliance

Publications (2)

Publication Number Publication Date
EP3897278A1 EP3897278A1 (en) 2021-10-27
EP3897278B1 true EP3897278B1 (en) 2024-04-17

Family

ID=66867267

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19827734.5A Active EP3897278B1 (en) 2018-12-20 2019-12-19 Steam hair styling apparatus

Country Status (5)

Country Link
EP (1) EP3897278B1 (en)
CN (2) CN212995079U (en)
ES (1) ES2981231T3 (en)
FR (1) FR3090286B1 (en)
WO (1) WO2020127851A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3135601A1 (en) 2022-05-19 2023-11-24 L'oreal Vaporization chamber for steam diffusion hairdressing device.
FR3140245A1 (en) 2022-09-30 2024-04-05 L'oreal Vaporization chamber for steam diffusion hairdressing device.
FR3142069A1 (en) 2022-11-17 2024-05-24 L'oreal Device for treating hair by applying steam.

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2703570B1 (en) 1993-04-06 1995-05-19 Seb Sa Hair treatment and / or shaping apparatus provided with a device for extracting the curly lock.
FR2967017B1 (en) 2010-11-05 2014-04-04 Seb Sa VAPOR HAIRSTYLE APPARATUS
FR2967019B1 (en) 2010-11-05 2014-05-23 Seb Sa AUTOMATIC CONTROL HAIRSTUFFING APPARATUS
FR2987242B1 (en) 2012-02-29 2014-05-23 Seb Sa VAPOR HAIRSTYLE APPARATUS
FR2997271B1 (en) 2012-10-26 2016-01-01 Oreal DEVICE FOR TREATING THE HAIR
CN108291712B (en) * 2015-11-26 2020-01-03 皇家飞利浦有限公司 Apparatus for generating steam and method for generating steam

Also Published As

Publication number Publication date
FR3090286B1 (en) 2021-09-17
FR3090286A1 (en) 2020-06-26
ES2981231T3 (en) 2024-10-07
CN212995079U (en) 2021-04-20
EP3897278A1 (en) 2021-10-27
WO2020127851A1 (en) 2020-06-25
CN111345562A (en) 2020-06-30

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